Merge remote-tracking branch 'parity/master'

.gitlab-ci.yml

@@ -5,6 +5,7 @@ variables:
   GIT_DEPTH: "3"
   SIMPLECOV: "true" 
   RUST_BACKTRACE: "1"
+  RUSTFLAGS: "-D warnings"
 cache:
   key: "$CI_BUILD_NAME/$CI_BUILD_REF_NAME"
   untracked: true
@@ -19,9 +20,18 @@ linux-stable:
   script:
     - cargo build --release --verbose
     - strip target/release/parity
+    - md5sum target/release/parity >> parity.md5
+    - sh scripts/deb-build.sh amd64
+    - cp target/release/parity deb/usr/bin/parity
+    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
+    - dpkg-deb -b deb "parity_"$VER"_amd64.deb"
+    - md5sum "parity_"$VER"_amd64.deb" >> "parity_"$VER"_amd64.deb.md5"
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity --body target/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb" --body "parity_"$VER"_amd64.deb"
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb.md5" --body "parity_"$VER"_amd64.deb.md5"
   tags:
     - rust
     - rust-stable
@@ -40,9 +50,18 @@ linux-stable-14.04:
   script:
     - cargo build --release --verbose
     - strip target/release/parity
+    - md5sum target/release/parity >> parity.md5
+    - sh scripts/deb-build.sh amd64
+    - cp target/release/parity deb/usr/bin/parity
+    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
+    - dpkg-deb -b deb "parity_"$VER"_amd64.deb"
+    - md5sum "parity_"$VER"_amd64.deb" >> "parity_"$VER"_amd64.deb.md5"
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-ubuntu_14_04-gnu/parity --body target/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-ubuntu_14_04-gnu/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-ubuntu_14_04-gnu/"parity_"$VER"_amd64.deb" --body "parity_"$VER"_amd64.deb"
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-ubuntu_14_04-gnu/"parity_"$VER"_amd64.deb.md5" --body "parity_"$VER"_amd64.deb.md5"
   tags:
     - rust
     - rust-14.04
@@ -101,9 +120,11 @@ linux-centos:
     - export CC="gcc"
     - cargo build --release --verbose
     - strip target/release/parity
+    - md5sum target/release/parity >> parity.md5
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity --body target/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity.md5 --body parity.md5
   tags:
     - rust
     - rust-centos
@@ -115,7 +136,6 @@ linux-armv7:
   stage: build
   image: ethcore/rust-armv7:latest
   only:
-    - master
     - beta
     - tags
     - stable
@@ -127,9 +147,18 @@ linux-armv7:
     - cat .cargo/config
     - cargo build --target armv7-unknown-linux-gnueabihf --release --verbose
     - arm-linux-gnueabihf-strip target/armv7-unknown-linux-gnueabihf/release/parity
+    - md5sum target/armv7-unknown-linux-gnueabihf/release/parity >> parity.md5
+    - sh scripts/deb-build.sh armhf
+    - cp target/armv7-unknown-linux-gnueabihf/release/parity deb/usr/bin/parity
+    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
+    - dpkg-deb -b deb "parity_"$VER"_armhf.deb"
+    - md5sum "parity_"$VER"_armhf.deb" >> "parity_"$VER"_armhf.deb.md5"
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/parity --body target/armv7-unknown-linux-gnueabihf/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
   tags:
     - rust
     - rust-arm
@@ -142,7 +171,6 @@ linux-arm:
   stage: build
   image: ethcore/rust-arm:latest
   only:
-    - master
     - beta
     - tags
     - stable
@@ -154,9 +182,18 @@ linux-arm:
     - cat .cargo/config
     - cargo build --target arm-unknown-linux-gnueabihf --release --verbose
     - arm-linux-gnueabihf-strip target/arm-unknown-linux-gnueabihf/release/parity
+    - md5sum target/arm-unknown-linux-gnueabihf/release/parity >> parity.md5
+    - sh scripts/deb-build.sh armhf
+    - cp target/arm-unknown-linux-gnueabihf/release/parity deb/usr/bin/parity
+    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
+    - dpkg-deb -b deb "parity_"$VER"_armhf.deb"
+    - md5sum "parity_"$VER"_armhf.deb" >> "parity_"$VER"_armhf.deb.md5"
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/parity --body target/arm-unknown-linux-gnueabihf/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
   tags:
     - rust
     - rust-arm
@@ -169,7 +206,6 @@ linux-armv6:
   stage: build
   image: ethcore/rust-armv6:latest
   only:
-    - master
     - beta
     - tags
     - stable
@@ -181,9 +217,11 @@ linux-armv6:
     - cat .cargo/config
     - cargo build --target arm-unknown-linux-gnueabi --release --verbose
     - arm-linux-gnueabi-strip target/arm-unknown-linux-gnueabi/release/parity
+    - md5sum target/arm-unknown-linux-gnueabi/release/parity >> parity.md5 
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabi/parity --body target/arm-unknown-linux-gnueabi/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabi/parity.md5 --body parity.md5
   tags:
     - rust
     - rust-arm
@@ -196,7 +234,6 @@ linux-aarch64:
   stage: build
   image: ethcore/rust-aarch64:latest
   only:
-    - master
     - beta
     - tags
     - stable
@@ -208,9 +245,18 @@ linux-aarch64:
     - cat .cargo/config
     - cargo build --target aarch64-unknown-linux-gnu --release --verbose
     - aarch64-linux-gnu-strip target/aarch64-unknown-linux-gnu/release/parity
+    - md5sum target/aarch64-unknown-linux-gnu/release/parity >> parity.md5
+    - sh scripts/deb-build.sh arm64
+    - cp target/aarch64-unknown-linux-gnu/release/parity deb/usr/bin/parity
+    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
+    - dpkg-deb -b deb "parity_"$VER"_arm64.deb"
+    - md5sum "parity_"$VER"_arm64.deb" >> "parity_"$VER"_arm64.deb.md5"
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/parity --body target/aarch64-unknown-linux-gnu/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/"parity_"$VER"_arm64.deb" --body "parity_"$VER"_arm64.deb"
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/"parity_"$VER"_arm64.deb.md5" --body "parity_"$VER"_arm64.deb.md5"
   tags:
     - rust
     - rust-arm
@@ -228,9 +274,11 @@ darwin:
     - stable
   script:
     - cargo build --release --verbose
+    - md5sum target/release/parity >> parity.md5
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-apple-darwin/parity --body target/release/parity
+    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-apple-darwin/parity.md5 --body parity.md5
   tags:
     - osx
   artifacts:
@@ -248,26 +296,93 @@ windows:
     - set INCLUDE=C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Include;C:\vs2015\VC\include;C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt
     - set LIB=C:\vs2015\VC\lib;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.10240.0\ucrt\x64
     - set RUST_BACKTRACE=1
+    - set RUSTFLAGS=%RUSTFLAGS% -Zorbit=off -D warnings
     - rustup default stable-x86_64-pc-windows-msvc
     - cargo build --release --verbose
+    - curl -sL --url "https://github.com/ethcore/win-build/raw/master/SimpleFC.dll" -o nsis\SimpleFC.dll
+    - curl -sL --url "https://github.com/ethcore/win-build/raw/master/vc_redist.x64.exe" -o nsis\vc_redist.x64.exe
+    - signtool sign /f %keyfile% /p %certpass% target\release\parity.exe
+    - cd nsis
+    - makensis.exe installer.nsi
+    - copy installer.exe InstallParity.exe
+    - signtool sign /f %keyfile% /p %certpass% InstallParity.exe
+    - md5sums InstallParity.exe > InstallParity.exe.md5
+    - zip win-installer.zip InstallParity.exe InstallParity.exe.md5
+    - md5sums win-installer.zip > win-installer.zip.md5
+    - cd ..\target\release\
+    - md5sums parity.exe parity.pdb > parity.md5
+    - md5sums parity.exe > parity.exe.md5
+    - zip parity.zip parity.exe parity.pdb parity.md5
+    - md5sums parity.zip > parity.zip.md5
+    - cd ..\..
     - aws configure set aws_access_key_id %s3_key%
     - aws configure set aws_secret_access_key %s3_secret%
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity --body target/release/parity.exe
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe --body target\release\parity.exe
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity --body target/release/parity.pdb
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe.md5 --body target\release\parity.exe.md5
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip --body target\release\parity.zip
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip.md5 --body target\release\parity.zip.md5
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe --body nsis\InstallParity.exe
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe.md5 --body nsis\InstallParity.exe.md5
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip --body nsis\win-installer.zip
+    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip.md5 --body nsis\win-installer.zip.md5
   tags:
    - rust-windows
   artifacts:
     paths:
     - target/release/parity.exe
     - target/release/parity.pdb
+    - nsis/InstallParity.exe
     name: "x86_64-pc-windows-msvc_parity"
 test-linux:
   stage: test
   before_script:
     - git submodule update --init --recursive
   script:
+    - export RUST_BACKTRACE=1
     - ./test.sh --verbose
   tags:
     - rust-test
   dependencies:
     - linux-stable
+js-release:
+  stage: build
+  image: ethcore/javascript:latest
+  only:
+    - master
+    - beta
+    - tags
+    - stable
+  before_script:
+    - ./js/scripts/install-deps.sh
+  script:
+    - ./js/scripts/build.sh
+    - ./js/scripts/release.sh
+  tags:
+    - javascript
+js-lint:
+  stage: test
+  image: ethcore/javascript:latest
+  before_script:
+    - ./js/scripts/install-deps.sh
+  script:
+    - ./js/scripts/lint.sh
+  tags:
+    - javascript-test
+js-test:
+  stage: test
+  image: ethcore/javascript:latest
+  before_script:
+    - ./js/scripts/install-deps.sh
+  script:
+    - ./js/scripts/test.sh
+  tags:
+    - javascript-test
+js-pack:
+  stage: test
+  image: ethcore/javascript:latest
+  before_script:
+    - ./js/scripts/install-deps.sh
+  script:
+    - ./js/scripts/build.sh
+  tags:
+    - javascript-test

.travis.yml

@@ -31,6 +31,7 @@ env:
   - RUN_COVERAGE="false"
   - RUN_DOCS="false"
   - TEST_OPTIONS=""
+  - RUSTFLAGS="-D warnings"
   # GH_TOKEN for documentation
   - secure: 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
   - KCOV_CMD="./kcov-master/tmp/usr/local/bin/kcov"

Cargo.lock

@@ -120,6 +120,11 @@ name = "bloomchain"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "byteorder"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "bytes"
 version = "0.3.0"
@@ -217,8 +222,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "elastic-array"
-version = "0.5.0"
+version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+source = "git+https://github.com/ethcore/elastic-array#70e4012e691b732c7c4cb04e9232799e6aa268bc"
+dependencies = [
+ "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "env_logger"
@@ -235,7 +243,7 @@ version = "0.5.4"
 source = "git+https://github.com/ethcore/rust-secp256k1#a9a0b1be1f39560ca86e8fc8e55e205a753ff25c"
 dependencies = [
  "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -259,7 +267,7 @@ name = "ethash"
 version = "1.4.0"
 dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "primal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha3 0.1.0",
 ]
@@ -270,10 +278,12 @@ version = "1.4.0"
 dependencies = [
  "bit-set 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bloomchain 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.4.0",
+ "ethcore-bloom-journal 0.1.0",
  "ethcore-devtools 1.4.0",
  "ethcore-io 1.4.0",
  "ethcore-ipc 1.4.0",
@@ -288,6 +298,7 @@ dependencies = [
  "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lru-cache 0.0.7 (git+https://github.com/contain-rs/lru-cache)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -300,7 +311,7 @@ dependencies = [
 
 [[package]]
 name = "ethcore-bigint"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -308,26 +319,33 @@ dependencies = [
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ethcore-bloom-journal"
+version = "0.1.0"
+dependencies = [
+ "siphasher 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "ethcore-dapps"
 version = "1.4.0"
 dependencies = [
  "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethabi 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-devtools 1.4.0",
  "ethcore-rpc 1.4.0",
  "ethcore-util 1.4.0",
- "https-fetch 0.1.0",
+ "fetch 0.1.0",
  "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
  "jsonrpc-core 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-http-server 6.1.0 (git+https://github.com/ethcore/jsonrpc-http-server.git)",
+ "jsonrpc-http-server 6.1.1 (git+https://github.com/ethcore/jsonrpc-http-server.git)",
  "linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime_guess 1.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-dapps 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-dapps-home 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-ui 1.4.0",
- "parity-dapps-status 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
- "parity-dapps-wallet 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -352,7 +370,7 @@ dependencies = [
  "crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.5.1 (git+https://github.com/ethcore/mio?branch=v0.5.x)",
- "parking_lot 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -387,6 +405,7 @@ dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "nanomsg 0.5.1 (git+https://github.com/ethcore/nanomsg.rs.git)",
  "semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -440,7 +459,7 @@ dependencies = [
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.5.1 (git+https://github.com/ethcore/mio?branch=v0.5.x)",
- "parking_lot 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.1.0",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -466,9 +485,10 @@ dependencies = [
  "ethkey 0.2.0",
  "ethstore 0.1.0",
  "ethsync 1.4.0",
+ "fetch 0.1.0",
  "json-ipc-server 0.2.4 (git+https://github.com/ethcore/json-ipc-server.git)",
  "jsonrpc-core 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-http-server 6.1.0 (git+https://github.com/ethcore/jsonrpc-http-server.git)",
+ "jsonrpc-http-server 6.1.1 (git+https://github.com/ethcore/jsonrpc-http-server.git)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.1.0",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -491,7 +511,8 @@ dependencies = [
  "ethcore-util 1.4.0",
  "jsonrpc-core 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-dapps-signer 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-ui 1.4.0",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws 0.5.2 (git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable)",
@@ -522,18 +543,20 @@ dependencies = [
  "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
- "elastic-array 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "elastic-array 0.6.0 (git+https://github.com/ethcore/elastic-array)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)",
- "ethcore-bigint 0.1.0",
+ "ethcore-bigint 0.1.1",
+ "ethcore-bloom-journal 0.1.0",
  "ethcore-devtools 1.4.0",
  "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.1.0",
  "rocksdb 0.4.5 (git+https://github.com/ethcore/rust-rocksdb)",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -553,7 +576,7 @@ name = "ethcrypto"
 version = "0.1.0"
 dependencies = [
  "eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)",
- "ethcore-bigint 0.1.0",
+ "ethcore-bigint 0.1.1",
  "ethkey 0.2.0",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "tiny-keccak 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -576,7 +599,7 @@ version = "0.2.0"
 dependencies = [
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)",
- "ethcore-bigint 0.1.0",
+ "ethcore-bigint 0.1.1",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -593,6 +616,7 @@ dependencies = [
  "itertools 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -618,7 +642,7 @@ dependencies = [
  "ethcore-util 1.4.0",
  "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.1.0",
  "semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -639,6 +663,16 @@ dependencies = [
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "fetch"
+version = "0.1.0"
+dependencies = [
+ "https-fetch 0.1.0",
+ "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
+ "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "flate2"
 version = "0.2.14"
@@ -650,8 +684,11 @@ dependencies = [
 
 [[package]]
 name = "gcc"
-version = "0.3.28"
+version = "0.3.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rayon 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "glob"
@@ -690,7 +727,7 @@ version = "0.1.0"
 dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.5.1 (git+https://github.com/ethcore/mio?branch=v0.5.x)",
- "rustls 0.1.1 (git+https://github.com/ctz/rustls)",
+ "rustls 0.1.2 (git+https://github.com/ctz/rustls)",
 ]
 
 [[package]]
@@ -779,7 +816,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "json-ipc-server"
 version = "0.2.4"
-source = "git+https://github.com/ethcore/json-ipc-server.git#5fbd0253750d3097b9a8fb27effa84c18d630bbb"
+source = "git+https://github.com/ethcore/json-ipc-server.git#4642cd03ec1d23db89df80d22d5a88e7364ab885"
 dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -811,7 +848,7 @@ version = "3.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_codegen 0.8.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -819,8 +856,8 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-http-server"
-version = "6.1.0"
+version = "6.1.1"
-source = "git+https://github.com/ethcore/jsonrpc-http-server.git#2766c6708f66f6f4e667211461d220b49c0d9fdf"
+source = "git+https://github.com/ethcore/jsonrpc-http-server.git#cd6d4cb37d672cc3057aecd0692876f9e85f3ba5"
 dependencies = [
  "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
  "jsonrpc-core 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -852,6 +889,11 @@ name = "libc"
 version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "linked-hash-map"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "linked-hash-map"
 version = "0.3.0"
@@ -862,6 +904,14 @@ name = "log"
 version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "lru-cache"
+version = "0.0.7"
+source = "git+https://github.com/contain-rs/lru-cache#13255e33c45ceb69a4b143f235a4322df5fb580e"
+dependencies = [
+ "linked-hash-map 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "matches"
 version = "0.1.2"
@@ -899,7 +949,7 @@ name = "miniz-sys"
 version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -985,7 +1035,7 @@ name = "nanomsg-sys"
 version = "0.5.0"
 source = "git+https://github.com/ethcore/nanomsg.rs.git#c40fe442c9afaea5b38009a3d992ca044dcceb00"
 dependencies = [
- "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1124,9 +1174,14 @@ version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "parity-dapps"
+name = "owning_ref"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "parity-dapps-glue"
 version = "1.4.0"
-source = "git+https://github.com/ethcore/parity-ui.git#926b09b66c4940b09dc82c52adb4afd9e31155bc"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aster 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1138,40 +1193,32 @@ dependencies = [
 ]
 
 [[package]]
-name = "parity-dapps-home"
+name = "parity-ui"
 version = "1.4.0"
-source = "git+https://github.com/ethcore/parity-ui.git#926b09b66c4940b09dc82c52adb4afd9e31155bc"
 dependencies = [
- "parity-dapps 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-ui-dev 1.4.0",
+ "parity-ui-precompiled 1.4.0 (git+https://github.com/ethcore/js-precompiled.git)",
+ "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "parity-dapps-signer"
+name = "parity-ui-dev"
 version = "1.4.0"
-source = "git+https://github.com/ethcore/parity-ui.git#926b09b66c4940b09dc82c52adb4afd9e31155bc"
 dependencies = [
- "parity-dapps 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "parity-dapps-status"
+name = "parity-ui-precompiled"
 version = "1.4.0"
-source = "git+https://github.com/ethcore/parity-ui.git#926b09b66c4940b09dc82c52adb4afd9e31155bc"
+source = "git+https://github.com/ethcore/js-precompiled.git#9f8baa9d0e54056c41a842b351597d0565beda98"
 dependencies = [
- "parity-dapps 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "parity-dapps-wallet"
-version = "1.4.0"
-source = "git+https://github.com/ethcore/parity-ui.git#926b09b66c4940b09dc82c52adb4afd9e31155bc"
-dependencies = [
- "parity-dapps 1.4.0 (git+https://github.com/ethcore/parity-ui.git)",
 ]
 
 [[package]]
 name = "parking_lot"
-version = "0.2.6"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1180,6 +1227,27 @@ dependencies = [
  "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "parking_lot"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "owning_ref 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "phf"
 version = "0.7.14"
@@ -1345,7 +1413,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "ring"
-version = "0.3.1"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1356,8 +1424,8 @@ dependencies = [
 name = "rlp"
 version = "0.1.0"
 dependencies = [
- "elastic-array 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "elastic-array 0.6.0 (git+https://github.com/ethcore/elastic-array)",
- "ethcore-bigint 0.1.0",
+ "ethcore-bigint 0.1.1",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1365,7 +1433,7 @@ dependencies = [
 [[package]]
 name = "rocksdb"
 version = "0.4.5"
-source = "git+https://github.com/ethcore/rust-rocksdb#485dd747a2c9a9f910fc8ac696fc9edf5fa22aa3"
+source = "git+https://github.com/ethcore/rust-rocksdb#64c63ccbe1f62c2e2b39262486f9ba813793af58"
 dependencies = [
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "rocksdb-sys 0.3.0 (git+https://github.com/ethcore/rust-rocksdb)",
@@ -1374,9 +1442,9 @@ dependencies = [
 [[package]]
 name = "rocksdb-sys"
 version = "0.3.0"
-source = "git+https://github.com/ethcore/rust-rocksdb#485dd747a2c9a9f910fc8ac696fc9edf5fa22aa3"
+source = "git+https://github.com/ethcore/rust-rocksdb#64c63ccbe1f62c2e2b39262486f9ba813793af58"
 dependencies = [
- "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1407,7 +1475,7 @@ name = "rust-crypto"
 version = "0.2.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1429,15 +1497,15 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.1.1"
+version = "0.1.2"
-source = "git+https://github.com/ctz/rustls#a9c5a79f49337e22ac05bb1ea114240bdbe0fdd2"
+source = "git+https://github.com/ctz/rustls#3d2db624997004b7b18ba4463d6081f37598b2f5"
 dependencies = [
  "base64 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "ring 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ring 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "webpki 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "webpki 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1500,9 +1568,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "sha3"
 version = "0.1.0"
 dependencies = [
- "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "siphasher"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "slab"
 version = "0.1.3"
@@ -1788,10 +1861,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "webpki"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "ring 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ring 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1810,7 +1883,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "ws"
 version = "0.5.2"
-source = "git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable#afbff59776ce16ccec5ee9e218b8891830ee6fdf"
+source = "git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable#00bd2134b07b4bc8ea47b7f6c7afce16bbe34c8f"
 dependencies = [
  "bytes 0.4.0-dev (git+https://github.com/carllerche/bytes)",
  "httparse 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1871,6 +1944,7 @@ dependencies = [
 "checksum bitflags 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4f67931368edf3a9a51d29886d245f1c3db2f1ef0dcc9e35ff70341b78c10d23"
 "checksum blastfig 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "09640e0509d97d5cdff03a9f5daf087a8e04c735c3b113a75139634a19cfc7b2"
 "checksum bloomchain 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3f421095d2a76fc24cd3fb3f912b90df06be7689912b1bdb423caefae59c258d"
+"checksum byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0fc10e8cc6b2580fda3f36eb6dc5316657f812a3df879a44a66fc9f0fdbc4855"
 "checksum bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c129aff112dcc562970abb69e2508b40850dd24c274761bb50fb8a0067ba6c27"
 "checksum bytes 0.4.0-dev (git+https://github.com/carllerche/bytes)" = "<none>"
 "checksum cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de1e760d7b6535af4241fca8bd8adf68e2e7edacc6b29f5d399050c5e48cf88c"
@@ -1883,12 +1957,12 @@ dependencies = [
 "checksum deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1614659040e711785ed8ea24219140654da1729f3ec8a47a9719d041112fe7bf"
 "checksum docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)" = "4cc0acb4ce0828c6a5a11d47baa432fe885881c27428c3a4e473e454ffe57a76"
 "checksum dtoa 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0dd841b58510c9618291ffa448da2e4e0f699d984d436122372f446dae62263d"
-"checksum elastic-array 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4bc9250a632e7c001b741eb0ec6cee93c9a5b6d5f1879696a4b94d62b012210a"
+"checksum elastic-array 0.6.0 (git+https://github.com/ethcore/elastic-array)" = "<none>"
 "checksum env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "aba65b63ffcc17ffacd6cf5aa843da7c5a25e3bd4bbe0b7def8b214e411250e5"
 "checksum eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)" = "<none>"
 "checksum ethabi 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f7b0c53453517f620847be51943db329276ae52f2e210cfc659e81182864be2f"
 "checksum flate2 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "3eeb481e957304178d2e782f2da1257f1434dfecbae883bafb61ada2a9fea3bb"
-"checksum gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)" = "3da3a2cbaeb01363c8e3704fd9fd0eb2ceb17c6f27abd4c1ef040fb57d20dc79"
+"checksum gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)" = "91ecd03771effb0c968fd6950b37e89476a578aaf1c70297d8e92b6516ec3312"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum hamming 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "65043da274378d68241eb9a8f8f8aa54e349136f7b8e12f63e3ef44043cc30e1"
 "checksum heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "abb306abb8d398e053cfb1b3e7b72c2f580be048b85745c52652954f8ad1439c"
@@ -1903,14 +1977,16 @@ dependencies = [
 "checksum itoa 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ae3088ea4baeceb0284ee9eea42f591226e6beaecf65373e41b38d95a1b8e7a1"
 "checksum json-ipc-server 0.2.4 (git+https://github.com/ethcore/json-ipc-server.git)" = "<none>"
 "checksum json-tcp-server 0.1.0 (git+https://github.com/ethcore/json-tcp-server)" = "<none>"
-"checksum jsonrpc-core 3.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e913b3c809aab9378889da8b990b4a46b98bd4794c8117946a1cf63c5f87bcde"
+"checksum jsonrpc-core 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3c5094610b07f28f3edaf3947b732dadb31dbba4941d4d0c1c7a8350208f4414"
-"checksum jsonrpc-http-server 6.1.0 (git+https://github.com/ethcore/jsonrpc-http-server.git)" = "<none>"
+"checksum jsonrpc-http-server 6.1.1 (git+https://github.com/ethcore/jsonrpc-http-server.git)" = "<none>"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a91d884b6667cd606bb5a69aa0c99ba811a115fc68915e7056ec08a46e93199a"
 "checksum lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "49247ec2a285bb3dcb23cbd9c35193c025e7251bfce77c1d5da97e6362dffe7f"
 "checksum libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)" = "23e3757828fa702a20072c37ff47938e9dd331b92fac6e223d26d4b7a55f7ee2"
+"checksum linked-hash-map 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bda158e0dabeb97ee8a401f4d17e479d6b891a14de0bba79d5cc2d4d325b5e48"
 "checksum linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6d262045c5b87c0861b3f004610afd0e2c851e2908d08b6c870cbb9d5f494ecd"
 "checksum log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "ab83497bf8bf4ed2a74259c1c802351fcd67a65baa86394b6ba73c36f4838054"
+"checksum lru-cache 0.0.7 (git+https://github.com/contain-rs/lru-cache)" = "<none>"
 "checksum matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "15305656809ce5a4805b1ff2946892810992197ce1270ff79baded852187942e"
 "checksum memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d8b629fb514376c675b98c1421e80b151d3817ac42d7c667717d282761418d20"
 "checksum mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a74cc2587bf97c49f3f5bab62860d6abf3902ca73b66b51d9b049fbdcd727bd2"
@@ -1938,12 +2014,12 @@ dependencies = [
 "checksum num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "51fedae97a05f7353612fe017ab705a37e6db8f4d67c5c6fe739a9e70d6eed09"
 "checksum number_prefix 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "084d05f4bf60621a9ac9bde941a410df548f4de9545f06e5ee9d3aef4b97cd77"
 "checksum odds 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)" = "b28c06e81b0f789122d415d6394b5fe849bde8067469f4c2980d3cdc10c78ec1"
-"checksum parity-dapps 1.4.0 (git+https://github.com/ethcore/parity-ui.git)" = "<none>"
+"checksum owning_ref 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8d91377085359426407a287ab16884a0111ba473aa6844ff01d4ec20ce3d75e7"
-"checksum parity-dapps-home 1.4.0 (git+https://github.com/ethcore/parity-ui.git)" = "<none>"
+"checksum parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "98378dec0a185da2b7180308752f0bad73aaa949c3e0a3b0528d0e067945f7ab"
-"checksum parity-dapps-signer 1.4.0 (git+https://github.com/ethcore/parity-ui.git)" = "<none>"
+"checksum parity-ui-precompiled 1.4.0 (git+https://github.com/ethcore/js-precompiled.git)" = "<none>"
-"checksum parity-dapps-status 1.4.0 (git+https://github.com/ethcore/parity-ui.git)" = "<none>"
+"checksum parking_lot 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "968f685642555d2f7e202c48b8b11de80569e9bfea817f7f12d7c61aac62d4e6"
-"checksum parity-dapps-wallet 1.4.0 (git+https://github.com/ethcore/parity-ui.git)" = "<none>"
+"checksum parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "dbc5847584161f273e69edc63c1a86254a22f570a0b5dd87aa6f9773f6f7d125"
-"checksum parking_lot 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "e0fd1be2c3cf5fef20a6d18fec252c4f3c87c14fc3039002eb7d4ed91e436826"
+"checksum parking_lot_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fb1b97670a2ffadce7c397fb80a3d687c4f3060140b885621ef1653d0e5d5068"
 "checksum phf 0.7.14 (registry+https://github.com/rust-lang/crates.io-index)" = "447d9d45f2e0b4a9b532e808365abf18fc211be6ca217202fcd45236ef12f026"
 "checksum phf_codegen 0.7.14 (registry+https://github.com/rust-lang/crates.io-index)" = "8af7ae7c3f75a502292b491e5cc0a1f69e3407744abe6e57e2a3b712bb82f01d"
 "checksum phf_generator 0.7.14 (registry+https://github.com/rust-lang/crates.io-index)" = "db005608fd99800c8c74106a7c894cf582055b689aa14a79462cefdcb7dc1cc3"
@@ -1964,7 +2040,7 @@ dependencies = [
 "checksum rayon 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "655df67c314c30fa3055a365eae276eb88aa4f3413a352a1ab32c1320eda41ea"
 "checksum regex 0.1.68 (registry+https://github.com/rust-lang/crates.io-index)" = "b4329b8928a284580a1c63ec9d846b12f6d3472317243ff7077aff11f23f2b29"
 "checksum regex-syntax 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "841591b1e05609a643e3b4d0045fce04f701daba7151ddcd3ad47b080693d5a9"
-"checksum ring 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d059a6a96d3be79042e3f70eb97945912839265f9d8ab45b921abaf266c70dbb"
+"checksum ring 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0d2f6547bf9640f1d3cc4e771f82374ec8fd237c17eeb3ff5cd5ccbe22377a09"
 "checksum rocksdb 0.4.5 (git+https://github.com/ethcore/rust-rocksdb)" = "<none>"
 "checksum rocksdb-sys 0.3.0 (git+https://github.com/ethcore/rust-rocksdb)" = "<none>"
 "checksum rotor 0.6.3 (git+https://github.com/ethcore/rotor)" = "<none>"
@@ -1972,7 +2048,7 @@ dependencies = [
 "checksum rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)" = "f76d05d3993fd5f4af9434e8e436db163a12a9d40e1a58a726f27a01dfd12a2a"
 "checksum rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)" = "6159e4e6e559c81bd706afe9c8fd68f547d3e851ce12e76b1de7914bab61691b"
 "checksum rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "c5f5376ea5e30ce23c03eb77cbe4962b988deead10910c372b226388b594c084"
-"checksum rustls 0.1.1 (git+https://github.com/ctz/rustls)" = "<none>"
+"checksum rustls 0.1.2 (git+https://github.com/ctz/rustls)" = "<none>"
 "checksum semver 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)" = "d4f410fedcf71af0345d7607d246e7ad15faaadd49d240ee3b24e5dc21a820ac"
 "checksum semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2d5b7638a1f03815d94e88cb3b3c08e87f0db4d683ef499d1836aaf70a45623f"
 "checksum serde 0.8.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b1dfda9ebb31d29fa8b94d7eb3031a86a8dcec065f0fe268a30f98867bf45775"
@@ -1980,6 +2056,7 @@ dependencies = [
 "checksum serde_codegen_internals 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f877e2781ed0a323295d1c9f0e26556117b5a11489fc47b1848dfb98b3173d21"
 "checksum serde_json 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0e10f8a9d94b06cf5d3bef66475f04c8ff90950f1be7004c357ff9472ccbaebc"
 "checksum sha1 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cc30b1e1e8c40c121ca33b86c23308a090d19974ef001b4bf6e61fd1a0fb095c"
+"checksum siphasher 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5c44e42fa187b5a8782489cf7740cc27c3125806be2bf33563cf5e02e9533fcd"
 "checksum slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d807fd58c4181bbabed77cb3b891ba9748241a552bcc5be698faaebefc54f46e"
 "checksum slab 0.2.0 (git+https://github.com/carllerche/slab?rev=5476efcafb)" = "<none>"
 "checksum slab 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6dbdd334bd28d328dad1c41b0ea662517883d8880d8533895ef96c8003dec9c4"
@@ -2017,7 +2094,7 @@ dependencies = [
 "checksum vecio 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0795a11576d29ae80525a3fda315bf7b534f8feb9d34101e5fe63fb95bb2fd24"
 "checksum vergen 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "56b639f935488eb40f06d17c3e3bcc3054f6f75d264e187b1107c8d1cba8d31c"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
-"checksum webpki 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5dc10a815fabbb0c3145c1153240528f3a8703a47e26e8dbb4a5d4f6386200ad"
+"checksum webpki 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "813503a5985585e0812d430cd1328ee322f47f66629c8ed4ecab939cf9e92f91"
 "checksum winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "4dfaaa8fbdaa618fa6914b59b2769d690dd7521920a18d84b42d254678dd5fd4"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
 "checksum ws 0.5.2 (git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable)" = "<none>"

Cargo.toml

@@ -26,7 +26,11 @@ lazy_static = "0.2"
 regex = "0.1"
 isatty = "0.1"
 toml = "0.2"
+serde = "0.8.0"
+serde_json = "0.8.0"
+hyper = { version = "0.9", default-features = false }
 ctrlc = { git = "https://github.com/ethcore/rust-ctrlc.git" }
+json-ipc-server = { git = "https://github.com/ethcore/json-ipc-server.git" }
 fdlimit = { path = "util/fdlimit" }
 ethcore = { path = "ethcore" }
 ethcore-util = { path = "util" }
@@ -40,12 +44,9 @@ ethcore-ipc = { path = "ipc/rpc" }
 ethcore-ipc-hypervisor = { path = "ipc/hypervisor" }
 ethcore-logger = { path = "logger" }
 rlp = { path = "util/rlp" }
-json-ipc-server = { git = "https://github.com/ethcore/json-ipc-server.git" }
+ethcore-stratum = { path = "stratum" }
 ethcore-dapps = { path = "dapps", optional = true }
 clippy = { version = "0.0.90", optional = true}
-ethcore-stratum = { path = "stratum" }
-serde = "0.8.0"
-serde_json = "0.8.0"
 
 [target.'cfg(windows)'.dependencies]
 winapi = "0.2"
@@ -53,29 +54,38 @@ winapi = "0.2"
 [target.'cfg(not(windows))'.dependencies]
 daemonize = "0.2"
 
-[dependencies.hyper]
-version = "0.9"
-default-features = false
-
 [features]
-default = ["ui", "use-precompiled-js", "ipc"]
+default = ["ui-precompiled"]
-ui = ["dapps", "ethcore-signer/ui"]
+
-use-precompiled-js = ["ethcore-dapps/use-precompiled-js", "ethcore-signer/use-precompiled-js"]
+ui = [
+	"dapps",
+	"ethcore-dapps/ui",
+	"ethcore-signer/ui",
+]
+ui-precompiled = [
+	"dapps",
+	"ethcore-signer/ui-precompiled",
+	"ethcore-dapps/ui-precompiled",
+]
+
 dapps = ["ethcore-dapps"]
-ipc = ["ethcore/ipc"]
+ipc = ["ethcore/ipc", "ethsync/ipc"]
 jit = ["ethcore/jit"]
 dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethsync/dev", "ethcore-rpc/dev", "ethcore-dapps/dev", "ethcore-signer/dev"]
 json-tests = ["ethcore/json-tests"]
+test-heavy = ["ethcore/test-heavy"]
 stratum = ["ipc"]
 ethkey-cli = ["ethcore/ethkey-cli"]
 ethstore-cli = ["ethcore/ethstore-cli"]
 evm-debug = ["ethcore/evm-debug"]
+evm-debug-tests = ["ethcore/evm-debug-tests"]
+slow-blocks = ["ethcore/slow-blocks"]
 
 [[bin]]
 path = "parity/main.rs"
 name = "parity"
 
 [profile.release]
-debug = true
+debug = false
 lto = false
 

README.md

@@ -5,6 +5,7 @@
 
 [Internal Documentation][doc-url]
 
+
 Be sure to check out [our wiki][wiki-url] for more information.
 
 [travis-image]: https://travis-ci.org/ethcore/parity.svg?branch=master
@@ -18,8 +19,11 @@ Be sure to check out [our wiki][wiki-url] for more information.
 [doc-url]: https://ethcore.github.io/parity/ethcore/index.html
 [wiki-url]: https://github.com/ethcore/parity/wiki
 
+**Requires Rust version 1.12.0 to build**
+
 ----
 
+
 ## About Parity
 
 Parity's goal is to be the fastest, lightest, and most secure Ethereum client. We are developing Parity using the sophisticated and
@@ -96,9 +100,9 @@ and Parity will begin syncing the Ethereum blockchain.
 ### Using systemd service file
 To start Parity as a regular user using systemd init:
 
-1. Copy ```parity/scripts/parity.service``` to your
+1. Copy `parity/scripts/parity.service` to your
-systemd user directory (usually ```~/.config/systemd/user```).
+systemd user directory (usually `~/.config/systemd/user`).
-2. To pass any argument to Parity, write a ```~/.parity/parity.conf``` file this way:
+2. To pass any argument to Parity, write a `~/.parity/parity.conf` file this way:
-```ARGS="ARG1 ARG2 ARG3"```.
+`ARGS="ARG1 ARG2 ARG3"`.
 
-	Example: ```ARGS="ui --geth --identity MyMachine"```.
+	Example: `ARGS="ui --geth --identity MyMachine"`.

appveyor.yml

@@ -6,6 +6,7 @@ environment:
   certpass:
     secure: 0BgXJqxq9Ei34/hZ7121FQ==
   keyfile: C:\users\appveyor\Certificates.p12
+  RUSTFLAGS: -Zorbit=off -D warnings
 
 branches:
   only:
@@ -18,10 +19,10 @@ branches:
 install:
   - git submodule update --init --recursive
   - ps: Install-Product node 6
-  - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-1.10.0-x86_64-pc-windows-msvc.exe"
+  - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-1.12.0-x86_64-pc-windows-msvc.exe"
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/SimpleFC.dll" -FileName nsis\SimpleFC.dll
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/vc_redist.x64.exe" -FileName nsis\vc_redist.x64.exe
-  - rust-1.10.0-x86_64-pc-windows-msvc.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
+  - rust-1.12.0-x86_64-pc-windows-msvc.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
   - SET PATH=%PATH%;C:\Program Files (x86)\Rust\bin;C:\Program Files (x86)\NSIS;C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Bin
   - rustc -V
   - cargo -V

dapps/Cargo.toml

@@ -11,6 +11,7 @@ build = "build.rs"
 [dependencies]
 rand = "0.3.14"
 log = "0.3"
+env_logger = "0.3"
 jsonrpc-core = "3.0"
 jsonrpc-http-server = { git = "https://github.com/ethcore/jsonrpc-http-server.git" }
 hyper = { default-features = false, git = "https://github.com/ethcore/hyper" }
@@ -19,19 +20,18 @@ url = "1.0"
 rustc-serialize = "0.3"
 serde = "0.8"
 serde_json = "0.8"
-serde_macros = { version = "0.8", optional = true }
-zip = { version = "0.1", default-features = false }
 ethabi = "0.2.2"
 linked-hash-map = "0.3"
+parity-dapps-glue = "1.4"
+mime = "0.2"
+serde_macros = { version = "0.8", optional = true }
+zip = { version = "0.1", default-features = false }
 ethcore-devtools = { path = "../devtools" }
 ethcore-rpc = { path = "../rpc" }
 ethcore-util = { path = "../util" }
-https-fetch = { path = "../util/https-fetch" }
+fetch = { path = "../util/fetch" }
-parity-dapps = { git = "https://github.com/ethcore/parity-ui.git", version = "1.4" }
+parity-ui = { path = "./ui" }
-# List of apps
+
-parity-dapps-status = { git = "https://github.com/ethcore/parity-ui.git", version = "1.4" }
-parity-dapps-home = { git = "https://github.com/ethcore/parity-ui.git", version = "1.4" }
-parity-dapps-wallet = { git = "https://github.com/ethcore/parity-ui.git", version = "1.4", optional = true }
 mime_guess = { version = "1.6.1" }
 clippy = { version = "0.0.90", optional = true}
 
@@ -39,13 +39,9 @@ clippy = { version = "0.0.90", optional = true}
 serde_codegen = { version = "0.8", optional = true }
 
 [features]
-default = ["serde_codegen", "extra-dapps"]
+default = ["serde_codegen"]
-extra-dapps = ["parity-dapps-wallet"]
 nightly = ["serde_macros"]
 dev = ["clippy", "ethcore-rpc/dev", "ethcore-util/dev"]
 
-use-precompiled-js = [
+ui = ["parity-ui/no-precompiled-js"]
-	"parity-dapps-status/use-precompiled-js",
+ui-precompiled = ["parity-ui/use-precompiled-js"]
-	"parity-dapps-home/use-precompiled-js",
-	"parity-dapps-wallet/use-precompiled-js"
-]

dapps/js-glue/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+description = "Base Package for all Parity built-in dapps"
+name = "parity-dapps-glue"
+version = "1.4.0"
+license = "GPL-3.0"
+authors = ["Ethcore <admin@ethcore.io"]
+build = "build.rs"
+
+[build-dependencies]
+quasi_codegen = { version = "0.11", optional = true }
+syntex = { version = "0.33", optional = true }
+
+[dependencies]
+glob = { version = "0.2.11" }
+mime_guess = { version = "1.6.1" }
+aster = { version = "0.17", default-features = false }
+quasi = { version = "0.11", default-features = false }
+quasi_macros = { version = "0.11", optional = true }
+syntex = { version = "0.33", optional = true }
+syntex_syntax = { version = "0.33", optional = true }
+clippy = { version = "0.0.90", optional = true }
+
+[features]
+dev = ["clippy"]
+default = ["with-syntex"]
+nightly = ["quasi_macros"]
+nightly-testing = ["clippy"]
+with-syntex = ["quasi/with-syntex", "quasi_codegen", "quasi_codegen/with-syntex", "syntex", "syntex_syntax"]
+use-precompiled-js = []
+
+

dapps/js-glue/README.md

@@ -0,0 +1,65 @@
+# Parity Dapps (JS-glue)
+
+Code generator to simplify creating a built-in Parity Dapp
+
+# How to create new builtin Dapp.
+1. Clone this repository.
+
+   ```bash
+   $ git clone https://github.com/ethcore/parity.git
+   ```
+
+1. Create a new directory for your Dapp. (`./myapp`)
+
+   ```bash
+   $ mkdir -p ./parity/dapps/myapp/src/web
+   ```
+
+1. Copy your frontend files to `./dapps/myapp/src/web` (bundled ones)
+
+   ```bash
+   $ cp -r ./myapp-src/* ./parity/dapps/myapp/src/web
+   ```
+
+1. Instead of creating `web3` in your app. Load (as the first script tag in `head`):
+
+   ```html
+   <script src="/parity-utils/inject.js"></script>
+   ```
+
+   The `inject.js` script will create global `web3` instance with proper provider that should be used by your dapp.
+
+1. Create `./parity/dapps/myapp/Cargo.toml` with you apps details. See example here: [parity-status Cargo.toml](https://github.com/ethcore/parity-ui/blob/master/status/Cargo.toml).
+
+   ```bash
+   $ git clone https://github.com/ethcore/parity-ui.git
+   $ cd ./parity-ui/
+   $ cp ./home/Cargo.toml ../parity/dapps/myapp/Cargo.toml
+   $ cp ./home/build.rs ../parity/dapps/myapp/build.rs
+   $ cp ./home/src/lib.rs ../parity/dapps/myapp/src/lib.rs
+   $ cp ./home/src/lib.rs.in ../parity/dapps/myapp/src/lib.rs.in
+   # And edit the details of your app
+   $ vim ../parity/dapps/myapp/Cargo.toml # Edit the details
+   $ vim ./parity/dapps/myapp/src/lib.rs.in # Edit the details
+   ```
+# How to include your Dapp into `Parity`?
+1. Edit `dapps/Cargo.toml` and add dependency to your application (it can be optional)
+
+   ```toml
+   # Use git repo and version
+   parity-dapps-myapp = { path="./myapp" }
+   ```
+
+1. Edit `dapps/src/apps.rs` and add your application to `all_pages` (if it's optional you need to specify two functions - see `parity-dapps-wallet` example)
+
+1. Compile parity.
+
+   ```bash
+   $ cargo build --release # While inside `parity`
+   ```
+
+1. Commit the results.
+
+   ```bash
+   $ git add myapp && git commit -am "My first Parity Dapp".
+   ```

dapps/js-glue/build.rs

@@ -14,21 +14,32 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-//! Block queue info types
 
-/// Block queue status
+#[cfg(feature = "with-syntex")]
-#[derive(Debug, Binary)]
+mod inner {
-pub struct BlockQueueInfo {
+	extern crate syntex;
-	/// Number of queued blocks pending verification
+	extern crate quasi_codegen;
-	pub unverified_queue_size: usize,
+
-	/// Number of verified queued blocks pending import
+	use std::env;
-	pub verified_queue_size: usize,
+	use std::path::Path;
-	/// Number of blocks being verified
+
-	pub verifying_queue_size: usize,
+	pub fn main() {
-	/// Configured maximum number of blocks in the queue
+		let out_dir = env::var_os("OUT_DIR").unwrap();
-	pub max_queue_size: usize,
+		let mut registry = syntex::Registry::new();
-	/// Configured maximum number of bytes to use
+		quasi_codegen::register(&mut registry);
-	pub max_mem_use: usize,
+
-	/// Heap memory used in bytes
+		let src = Path::new("src/lib.rs.in");
-	pub mem_used: usize,
+		let dst = Path::new(&out_dir).join("lib.rs");
+
+		registry.expand("", &src, &dst).unwrap();
+	}
+}
+
+#[cfg(not(feature = "with-syntex"))]
+mod inner {
+	pub fn main() {}
+}
+
+fn main() {
+	inner::main();
 }

dapps/js-glue/src/build.rs

@@ -0,0 +1,66 @@
+
+#[cfg(feature = "with-syntex")]
+pub mod inner {
+	use syntex;
+	use codegen;
+	use syntax::{ast, fold};
+	use std::env;
+	use std::path::Path;
+
+	fn strip_attributes(krate: ast::Crate) -> ast::Crate {
+		/// Helper folder that strips the serde attributes after the extensions have been expanded.
+		struct StripAttributeFolder;
+
+		impl fold::Folder for StripAttributeFolder {
+			fn fold_attribute(&mut self, attr: ast::Attribute) -> Option<ast::Attribute> {
+				match attr.node.value.node {
+					ast::MetaItemKind::List(ref n, _) if n == &"webapp" => { return None; }
+					_ => {}
+				}
+
+				Some(attr)
+			}
+
+			fn fold_mac(&mut self, mac: ast::Mac) -> ast::Mac {
+				fold::noop_fold_mac(mac, self)
+			}
+		}
+
+		fold::Folder::fold_crate(&mut StripAttributeFolder, krate)
+	}
+
+	pub fn register(reg: &mut syntex::Registry) {
+		reg.add_attr("feature(custom_derive)");
+		reg.add_attr("feature(custom_attribute)");
+
+		reg.add_decorator("derive_WebAppFiles", codegen::expand_webapp_implementation);
+		reg.add_post_expansion_pass(strip_attributes);
+	}
+
+	pub fn generate() {
+		let out_dir = env::var_os("OUT_DIR").unwrap();
+		let mut registry = syntex::Registry::new();
+		register(&mut registry);
+
+		let src = Path::new("src/lib.rs.in");
+		let dst = Path::new(&out_dir).join("lib.rs");
+
+		registry.expand("", &src, &dst).unwrap();
+	}
+}
+
+#[cfg(not(feature = "with-syntex"))]
+pub mod inner {
+	use codegen;
+
+	pub fn register(reg: &mut rustc_plugin::Registry) {
+		reg.register_syntax_extension(
+			syntax::parse::token::intern("derive_WebAppFiles"),
+			syntax::ext::base::MultiDecorator(
+				Box::new(codegen::expand_webapp_implementation)));
+
+		reg.register_attribute("webapp".to_owned(), AttributeType::Normal);
+	}
+
+	pub fn generate() {}
+}

dapps/js-glue/src/codegen.rs

@@ -0,0 +1,189 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+extern crate aster;
+extern crate glob;
+extern crate mime_guess;
+
+use self::mime_guess::guess_mime_type;
+use std::path::{self, Path, PathBuf};
+use std::ops::Deref;
+
+use syntax::ast::{MetaItem, Item};
+
+use syntax::ast;
+use syntax::attr;
+use syntax::codemap::Span;
+use syntax::ext::base::{Annotatable, ExtCtxt};
+use syntax::ptr::P;
+use syntax::print::pprust::{lit_to_string};
+use syntax::parse::token::{InternedString};
+
+
+pub fn expand_webapp_implementation(
+	cx: &mut ExtCtxt,
+	span: Span,
+	meta_item: &MetaItem,
+	annotatable: &Annotatable,
+	push: &mut FnMut(Annotatable)
+) {
+	let item = match *annotatable {
+		Annotatable::Item(ref item) => item,
+		_ => {
+			cx.span_err(meta_item.span, "`#[derive(WebAppFiles)]` may only be applied to struct implementations");
+			return;
+		},
+	};
+	let builder = aster::AstBuilder::new().span(span);
+	implement_webapp(cx, &builder, &item, push);
+}
+
+fn implement_webapp(cx: &ExtCtxt, builder: &aster::AstBuilder, item: &Item, push: &mut FnMut(Annotatable)) {
+	let static_files_dir = extract_path(cx, item);
+
+	let src = Path::new("src");
+	let static_files = {
+		let mut buf = src.to_path_buf();
+		buf.push(static_files_dir.deref());
+		buf
+	};
+
+	let search_location = {
+		let mut buf = static_files.to_path_buf();
+		buf.push("**");
+		buf.push("*");
+		buf
+	};
+
+	let files = glob::glob(search_location.to_str().expect("Valid UTF8 path"))
+		.expect("The sources directory is missing.")
+		.collect::<Result<Vec<PathBuf>, glob::GlobError>>()
+		.expect("There should be no error when reading a list of files.");
+
+	let statements = files
+		.iter()
+		.filter(|path_buf| path_buf.is_file())
+		.map(|path_buf| {
+			let path = path_buf.as_path();
+			let filename = path.file_name().and_then(|s| s.to_str()).expect("Only UTF8 paths.");
+			let mime_type = guess_mime_type(filename).to_string();
+			let file_path = as_uri(path.strip_prefix(&static_files).ok().expect("Prefix is always there, cause it's absolute path;qed"));
+			let file_path_in_source = path.to_str().expect("Only UTF8 paths.");
+
+			let path_lit = builder.expr().str(file_path.as_str());
+			let mime_lit = builder.expr().str(mime_type.as_str());
+			let web_path_lit = builder.expr().str(file_path_in_source);
+			let separator_lit = builder.expr().str(path::MAIN_SEPARATOR.to_string().as_str());
+			let concat_id = builder.id("concat!");
+			let env_id = builder.id("env!");
+			let macro_id = builder.id("include_bytes!");
+
+			let content = quote_expr!(
+				cx,
+				$macro_id($concat_id($env_id("CARGO_MANIFEST_DIR"), $separator_lit, $web_path_lit))
+			);
+			quote_stmt!(
+				cx,
+				files.insert($path_lit, File { path: $path_lit, content_type: $mime_lit, content: $content });
+			).expect("The statement is always ok, because it just uses literals.")
+		}).collect::<Vec<ast::Stmt>>();
+
+	let type_name = item.ident;
+
+	let files_impl = quote_item!(cx,
+		impl $type_name {
+			fn files() -> ::std::collections::HashMap<&'static str, File> {
+				let mut files = ::std::collections::HashMap::new();
+				$statements
+				files
+			}
+		}
+	).unwrap();
+
+	push(Annotatable::Item(files_impl));
+}
+
+fn extract_path(cx: &ExtCtxt, item: &Item) -> String {
+	for meta_items in item.attrs().iter().filter_map(webapp_meta_items) {
+		for meta_item in meta_items {
+			match meta_item.node {
+				ast::MetaItemKind::NameValue(ref name, ref lit) if name == &"path" => {
+					if let Some(s) = get_str_from_lit(cx, name, lit) {
+						return s.deref().to_owned();
+					}
+				},
+				_ => {},
+			}
+		}
+	}
+
+	// default
+	"web".to_owned()
+}
+
+fn get_str_from_lit(cx: &ExtCtxt, name: &str, lit: &ast::Lit) -> Option<InternedString> {
+	match lit.node {
+		ast::LitKind::Str(ref s, _) => Some(s.clone()),
+		_ => {
+			cx.span_err(
+				lit.span,
+				&format!("webapp annotation `{}` must be a string, not `{}`",
+					name,
+					lit_to_string(lit)
+				)
+			);
+			return None;
+		}
+	}
+}
+
+fn webapp_meta_items(attr: &ast::Attribute) -> Option<&[P<ast::MetaItem>]> {
+	match attr.node.value.node {
+		ast::MetaItemKind::List(ref name, ref items) if name == &"webapp" => {
+			attr::mark_used(&attr);
+			Some(items)
+		}
+		_ => None
+	}
+}
+
+fn as_uri(path: &Path) -> String {
+	let mut s = String::new();
+	for component in path.iter() {
+		s.push_str(component.to_str().expect("Only UTF-8 filenames are supported."));
+		s.push('/');
+	}
+	s[0..s.len()-1].into()
+}
+
+
+#[test]
+fn should_convert_path_separators_on_all_platforms() {
+	// given
+	let p = {
+		let mut p = PathBuf::new();
+		p.push("web");
+		p.push("src");
+		p.push("index.html");
+		p
+	};
+
+	// when
+	let path = as_uri(&p);
+
+	// then
+	assert_eq!(path, "web/src/index.html".to_owned());
+}

dapps/js-glue/src/js.rs

@@ -0,0 +1,89 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+#![cfg_attr(feature="use-precompiled-js", allow(dead_code))]
+#![cfg_attr(feature="use-precompiled-js", allow(unused_imports))]
+
+use std::fmt;
+use std::process::Command;
+
+#[cfg(not(windows))]
+mod platform {
+	use std::process::Command;
+
+	pub static NPM_CMD: &'static str = "npm";
+	pub fn handle_fd(cmd: &mut Command) -> &mut Command {
+		cmd
+	}
+}
+
+#[cfg(windows)]
+mod platform {
+	use std::process::{Command, Stdio};
+
+	pub static NPM_CMD: &'static str = "npm.cmd";
+	// NOTE [ToDr] For some reason on windows
+	// We cannot have any file descriptors open when running a child process
+	// during build phase.
+	pub fn handle_fd(cmd: &mut Command) -> &mut Command {
+		cmd.stdin(Stdio::null())
+			.stdout(Stdio::null())
+			.stderr(Stdio::null())
+	}
+}
+
+fn die<T : fmt::Debug>(s: &'static str, e: T) -> ! {
+	panic!("Error: {}: {:?}", s, e);
+}
+
+#[cfg(feature = "use-precompiled-js")]
+pub fn test(_path: &str) {
+}
+#[cfg(feature = "use-precompiled-js")]
+pub fn build(_path: &str, _dest: &str) {
+}
+
+#[cfg(not(feature = "use-precompiled-js"))]
+pub fn build(path: &str, dest: &str) {
+	let child = platform::handle_fd(&mut Command::new(platform::NPM_CMD))
+		.arg("install")
+		.arg("--no-progress")
+		.current_dir(path)
+		.status()
+		.unwrap_or_else(|e| die("Installing node.js dependencies with npm", e));
+	assert!(child.success(), "There was an error installing dependencies.");
+
+	let child = platform::handle_fd(&mut Command::new(platform::NPM_CMD))
+		.arg("run")
+		.arg("build")
+		.env("NODE_ENV", "production")
+		.env("BUILD_DEST", dest)
+		.current_dir(path)
+		.status()
+		.unwrap_or_else(|e| die("Building JS code", e));
+	assert!(child.success(), "There was an error build JS code.");
+}
+
+#[cfg(not(feature = "use-precompiled-js"))]
+pub fn test(path: &str) {
+	let child = Command::new(platform::NPM_CMD)
+		.arg("run")
+		.arg("test")
+		.current_dir(path)
+		.status()
+		.unwrap_or_else(|e| die("Running test command", e));
+	assert!(child.success(), "There was an error while running JS tests.");
+}

dapps/js-glue/src/lib.rs

@@ -0,0 +1,39 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+
+#![cfg_attr(not(feature = "with-syntex"), feature(rustc_private, plugin))]
+#![cfg_attr(not(feature = "with-syntex"), plugin(quasi_macros))]
+
+#[cfg(feature = "with-syntex")]
+extern crate syntex;
+
+#[cfg(feature = "with-syntex")]
+#[macro_use]
+extern crate syntex_syntax as syntax;
+
+#[cfg(feature = "with-syntex")]
+include!(concat!(env!("OUT_DIR"), "/lib.rs"));
+
+#[cfg(not(feature = "with-syntex"))]
+#[macro_use]
+extern crate syntax;
+
+#[cfg(not(feature = "with-syntex"))]
+extern crate rustc_plugin;
+
+#[cfg(not(feature = "with-syntex"))]
+include!("lib.rs.in");

dapps/js-glue/src/lib.rs.in

@@ -0,0 +1,46 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+extern crate quasi;
+
+mod codegen;
+mod build;
+pub mod js;
+pub use build::inner::generate;
+
+use std::default::Default;
+
+#[derive(Clone)]
+pub struct File {
+	pub path: &'static str,
+	pub content: &'static [u8],
+	// TODO: use strongly-typed MIME.
+	pub content_type: &'static str,
+}
+
+#[derive(Clone, Debug)]
+pub struct Info {
+	pub name: &'static str,
+	pub version: &'static str,
+	pub author: &'static str,
+	pub description: &'static str,
+	pub icon_url: &'static str,
+}
+
+pub trait WebApp : Default + Send + Sync {
+	fn file(&self, path: &str) -> Option<&File>;
+	fn info(&self) -> Info;
+}

dapps/src/api/api.rs

@@ -15,24 +15,31 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::sync::Arc;
+use unicase::UniCase;
 use hyper::{server, net, Decoder, Encoder, Next, Control};
+use hyper::header;
+use hyper::method::Method;
+use hyper::header::AccessControlAllowOrigin;
+
 use api::types::{App, ApiError};
-use api::response::{as_json, as_json_error, ping_response};
+use api::response;
+use apps::fetcher::ContentFetcher;
+
 use handlers::extract_url;
 use endpoint::{Endpoint, Endpoints, Handler, EndpointPath};
-use apps::fetcher::ContentFetcher;
+use jsonrpc_http_server::cors;
 
 #[derive(Clone)]
 pub struct RestApi {
-	local_domain: String,
+	cors_domains: Option<Vec<AccessControlAllowOrigin>>,
 	endpoints: Arc<Endpoints>,
 	fetcher: Arc<ContentFetcher>,
 }
 
 impl RestApi {
-	pub fn new(local_domain: String, endpoints: Arc<Endpoints>, fetcher: Arc<ContentFetcher>) -> Box<Endpoint> {
+	pub fn new(cors_domains: Vec<String>, endpoints: Arc<Endpoints>, fetcher: Arc<ContentFetcher>) -> Box<Endpoint> {
 		Box::new(RestApi {
-			local_domain: local_domain,
+			cors_domains: Some(cors_domains.into_iter().map(AccessControlAllowOrigin::Value).collect()),
 			endpoints: endpoints,
 			fetcher: fetcher,
 		})
@@ -53,6 +60,7 @@ impl Endpoint for RestApi {
 
 struct RestApiRouter {
 	api: RestApi,
+	origin: Option<String>,
 	path: Option<EndpointPath>,
 	control: Option<Control>,
 	handler: Box<Handler>,
@@ -62,9 +70,10 @@ impl RestApiRouter {
 	fn new(api: RestApi, path: EndpointPath, control: Control) -> Self {
 		RestApiRouter {
 			path: Some(path),
+			origin: None,
 			control: Some(control),
 			api: api,
-			handler: as_json_error(&ApiError {
+			handler: response::as_json_error(&ApiError {
 				code: "404".into(),
 				title: "Not Found".into(),
 				detail: "Resource you requested has not been found.".into(),
@@ -80,11 +89,40 @@ impl RestApiRouter {
 			_ => None
 		}
 	}
+
+	/// Returns basic headers for a response (it may be overwritten by the handler)
+	fn response_headers(&self) -> header::Headers {
+		let mut headers = header::Headers::new();
+		headers.set(header::AccessControlAllowCredentials);
+		headers.set(header::AccessControlAllowMethods(vec![
+			Method::Options,
+			Method::Post,
+			Method::Get,
+		]));
+		headers.set(header::AccessControlAllowHeaders(vec![
+			UniCase("origin".to_owned()),
+			UniCase("content-type".to_owned()),
+			UniCase("accept".to_owned()),
+		]));
+
+		if let Some(cors_header) = cors::get_cors_header(&self.api.cors_domains, &self.origin) {
+			headers.set(cors_header);
+		}
+
+		headers
+	}
 }
 
 impl server::Handler<net::HttpStream> for RestApiRouter {
 
 	fn on_request(&mut self, request: server::Request<net::HttpStream>) -> Next {
+		self.origin = cors::read_origin(&request);
+
+		if let Method::Options = *request.method() {
+			self.handler = response::empty();
+			return Next::write();
+		}
+
 		let url = extract_url(&request);
 		if url.is_none() {
 			// Just return 404 if we can't parse URL
@@ -92,15 +130,18 @@ impl server::Handler<net::HttpStream> for RestApiRouter {
 		}
 
 		let url = url.expect("Check for None early-exists above; qed");
-		let path = self.path.take().expect("on_request called only once, and path is always defined in new; qed");
+		let mut path = self.path.take().expect("on_request called only once, and path is always defined in new; qed");
 		let control = self.control.take().expect("on_request called only once, and control is always defined in new; qed");
 
 		let endpoint = url.path.get(1).map(|v| v.as_str());
 		let hash = url.path.get(2).map(|v| v.as_str());
+		// at this point path.app_id contains 'api', adjust it to the hash properly, otherwise
+		// we will try and retrieve 'api' as the hash when doing the /api/content route
+		if let Some(ref hash) = hash { path.app_id = hash.clone().to_owned() }
 
 		let handler = endpoint.and_then(|v| match v {
-			"apps" => Some(as_json(&self.api.list_apps())),
+			"apps" => Some(response::as_json(&self.api.list_apps())),
-			"ping" => Some(ping_response(&self.api.local_domain)),
+			"ping" => Some(response::ping()),
 			"content" => self.resolve_content(hash, path, control),
 			_ => None
 		});
@@ -118,6 +159,7 @@ impl server::Handler<net::HttpStream> for RestApiRouter {
 	}
 
 	fn on_response(&mut self, res: &mut server::Response) -> Next {
+		*res.headers_mut() = self.response_headers();
 		self.handler.on_response(res)
 	}
 

dapps/src/api/response.rs

@@ -19,18 +19,22 @@ use serde_json;
 use endpoint::Handler;
 use handlers::{ContentHandler, EchoHandler};
 
-pub fn as_json<T : Serialize>(val: &T) -> Box<Handler> {
+pub fn empty() -> Box<Handler> {
-	Box::new(ContentHandler::ok(serde_json::to_string(val).unwrap(), "application/json".to_owned()))
+	Box::new(ContentHandler::ok("".into(), mime!(Text/Plain)))
 }
 
-pub fn as_json_error<T : Serialize>(val: &T) -> Box<Handler> {
+pub fn as_json<T: Serialize>(val: &T) -> Box<Handler> {
-	Box::new(ContentHandler::not_found(serde_json::to_string(val).unwrap(), "application/json".to_owned()))
+	let json = serde_json::to_string(val)
+		.expect("serialization to string is infallible; qed");
+	Box::new(ContentHandler::ok(json, mime!(Application/Json)))
 }
 
-pub fn ping_response(local_domain: &str) -> Box<Handler> {
+pub fn as_json_error<T: Serialize>(val: &T) -> Box<Handler> {
-	Box::new(EchoHandler::cors(vec![
+	let json = serde_json::to_string(val)
-		format!("http://{}", local_domain),
+		.expect("serialization to string is infallible; qed");
-		// Allow CORS calls also for localhost
+	Box::new(ContentHandler::not_found(json, mime!(Application/Json)))
-		format!("http://{}", local_domain.replace("127.0.0.1", "localhost")),
+}
-	]))
+
+pub fn ping() -> Box<Handler> {
+	Box::new(EchoHandler::default())
 }

dapps/src/apps/cache.rs

@@ -47,15 +47,17 @@ impl ContentCache {
 	}
 
 	pub fn clear_garbage(&mut self, expected_size: usize) -> Vec<(String, ContentStatus)> {
-		let mut len = self.cache.len();
+		let len = self.cache.len();
 
 		if len <= expected_size {
 			return Vec::new();
 		}
 
 		let mut removed = Vec::with_capacity(len - expected_size);
-		while len > expected_size {
+
-			let entry = self.cache.pop_front().unwrap();
+		while self.cache.len() > expected_size {
+			let entry = self.cache.pop_front().expect("expected_size bounded at 0, len is greater; qed");
+
 			match entry.1 {
 				ContentStatus::Fetching(ref fetch) => {
 					trace!(target: "dapps", "Aborting {} because of limit.", entry.0);
@@ -64,16 +66,15 @@ impl ContentCache {
 				},
 				ContentStatus::Ready(ref endpoint) => {
 					trace!(target: "dapps", "Removing {} because of limit.", entry.0);
-					// Remove path
+					// Remove path (dir or file)
-					let res = fs::remove_dir_all(&endpoint.path());
+					let res = fs::remove_dir_all(&endpoint.path()).or_else(|_| fs::remove_file(&endpoint.path()));
 					if let Err(e) = res {
-						warn!(target: "dapps", "Unable to remove dapp: {:?}", e);
+						warn!(target: "dapps", "Unable to remove dapp/content from cache: {:?}", e);
 					}
 				}
 			}
 
 			removed.push(entry);
-			len -= 1;
 		}
 		removed
 	}

dapps/src/apps/fetcher.rs

@@ -46,6 +46,7 @@ pub struct ContentFetcher<R: URLHint = URLHintContract> {
 	resolver: R,
 	cache: Arc<Mutex<ContentCache>>,
 	sync: Arc<SyncStatus>,
+	embeddable_at: Option<u16>,
 }
 
 impl<R: URLHint> Drop for ContentFetcher<R> {
@@ -57,7 +58,7 @@ impl<R: URLHint> Drop for ContentFetcher<R> {
 
 impl<R: URLHint> ContentFetcher<R> {
 
-	pub fn new(resolver: R, sync_status: Arc<SyncStatus>) -> Self {
+	pub fn new(resolver: R, sync_status: Arc<SyncStatus>, embeddable_at: Option<u16>) -> Self {
 		let mut dapps_path = env::temp_dir();
 		dapps_path.push(random_filename());
 
@@ -66,9 +67,19 @@ impl<R: URLHint> ContentFetcher<R> {
 			resolver: resolver,
 			sync: sync_status,
 			cache: Arc::new(Mutex::new(ContentCache::default())),
+			embeddable_at: embeddable_at,
 		}
 	}
 
+	fn still_syncing() -> Box<Handler> {
+		Box::new(ContentHandler::error(
+			StatusCode::ServiceUnavailable,
+			"Sync In Progress",
+			"Your node is still syncing. We cannot resolve any content before it's fully synced.",
+			Some("<a href=\"javascript:window.location.reload()\">Refresh</a>")
+		))
+	}
+
 	#[cfg(test)]
 	fn set_status(&self, content_id: &str, status: ContentStatus) {
 		self.cache.lock().insert(content_id.to_owned(), status);
@@ -84,12 +95,10 @@ impl<R: URLHint> ContentFetcher<R> {
 		}
 		// fallback to resolver
 		if let Ok(content_id) = content_id.from_hex() {
-			// if app_id is valid, but we are syncing always return true.
-			if self.sync.is_major_syncing() {
-				return true;
-			}
 			// else try to resolve the app_id
-			self.resolver.resolve(content_id).is_some()
+			let has_content = self.resolver.resolve(content_id).is_some();
+			// if there is content or we are syncing return true
+			has_content || self.sync.is_major_importing()
 		} else {
 			false
 		}
@@ -99,30 +108,21 @@ impl<R: URLHint> ContentFetcher<R> {
 		let mut cache = self.cache.lock();
 		let content_id = path.app_id.clone();
 
-		if self.sync.is_major_syncing() {
-			return Box::new(ContentHandler::error(
-				StatusCode::ServiceUnavailable,
-				"Sync In Progress",
-				"Your node is still syncing. We cannot resolve any content before it's fully synced.",
-				Some("<a href=\"javascript:window.location.reload()\">Refresh</a>")
-			));
-		}
-
 		let (new_status, handler) = {
 			let status = cache.get(&content_id);
 			match status {
-				// Just server dapp
+				// Just serve the content
 				Some(&mut ContentStatus::Ready(ref endpoint)) => {
 					(None, endpoint.to_async_handler(path, control))
 				},
-				// App is already being fetched
+				// Content is already being fetched
 				Some(&mut ContentStatus::Fetching(ref fetch_control)) => {
 					trace!(target: "dapps", "Content fetching in progress. Waiting...");
 					(None, fetch_control.to_handler(control))
 				},
-				// We need to start fetching app
+				// We need to start fetching the content
 				None => {
-					trace!(target: "dapps", "Content unavailable. Fetching...");
+					trace!(target: "dapps", "Content unavailable. Fetching... {:?}", content_id);
 					let content_hex = content_id.from_hex().expect("to_handler is called only when `contains` returns true.");
 					let content = self.resolver.resolve(content_hex);
 
@@ -141,6 +141,10 @@ impl<R: URLHint> ContentFetcher<R> {
 					};
 
 					match content {
+						// Don't serve dapps if we are still syncing (but serve content)
+						Some(URLHintResult::Dapp(_)) if self.sync.is_major_importing() => {
+							(None, Self::still_syncing())
+						},
 						Some(URLHintResult::Dapp(dapp)) => {
 							let (handler, fetch_control) = ContentFetcherHandler::new(
 								dapp.url(),
@@ -150,6 +154,7 @@ impl<R: URLHint> ContentFetcher<R> {
 									id: content_id.clone(),
 									dapps_path: self.dapps_path.clone(),
 									on_done: Box::new(on_done),
+									embeddable_at: self.embeddable_at,
 								}
 							);
 
@@ -170,6 +175,9 @@ impl<R: URLHint> ContentFetcher<R> {
 
 							(Some(ContentStatus::Fetching(fetch_control)), Box::new(handler) as Box<Handler>)
 						},
+						None if self.sync.is_major_importing() => {
+							(None, Self::still_syncing())
+						},
 						None => {
 							// This may happen when sync status changes in between
 							// `contains` and `to_handler`
@@ -271,6 +279,7 @@ struct DappInstaller {
 	id: String,
 	dapps_path: PathBuf,
 	on_done: Box<Fn(String, Option<LocalPageEndpoint>) + Send>,
+	embeddable_at: Option<u16>,
 }
 
 impl DappInstaller {
@@ -363,7 +372,7 @@ impl ContentValidator for DappInstaller {
 		try!(manifest_file.write_all(manifest_str.as_bytes()));
 
 		// Create endpoint
-		let app = LocalPageEndpoint::new(target, manifest.clone().into());
+		let app = LocalPageEndpoint::new(target, manifest.clone().into(), self.embeddable_at);
 
 		// Return modified app manifest
 		Ok((manifest.id.clone(), app))
@@ -396,14 +405,14 @@ mod tests {
 	fn should_true_if_contains_the_app() {
 		// given
 		let path = env::temp_dir();
-		let fetcher = ContentFetcher::new(FakeResolver, Arc::new(|| false));
+		let fetcher = ContentFetcher::new(FakeResolver, Arc::new(|| false), None);
 		let handler = LocalPageEndpoint::new(path, EndpointInfo {
 			name: "fake".into(),
 			description: "".into(),
 			version: "".into(),
 			author: "".into(),
 			icon_url: "".into(),
-		});
+		}, None);
 
 		// when
 		fetcher.set_status("test", ContentStatus::Ready(handler));
@@ -415,4 +424,3 @@ mod tests {
 		assert_eq!(fetcher.contains("test3"), false);
 	}
 }
-

dapps/src/apps/fs.rs

@@ -97,12 +97,12 @@ fn read_manifest(name: &str, mut path: PathBuf) -> EndpointInfo {
 		})
 }
 
-pub fn local_endpoints(dapps_path: String) -> Endpoints {
+pub fn local_endpoints(dapps_path: String, signer_port: Option<u16>) -> Endpoints {
 	let mut pages = Endpoints::new();
 	for dapp in local_dapps(dapps_path) {
 		pages.insert(
 			dapp.id,
-			Box::new(LocalPageEndpoint::new(dapp.path, dapp.info))
+			Box::new(LocalPageEndpoint::new(dapp.path, dapp.info, signer_port))
 		);
 	}
 	pages

dapps/src/apps/mod.rs

@@ -25,17 +25,14 @@ pub mod urlhint;
 pub mod fetcher;
 pub mod manifest;
 
-extern crate parity_dapps_status;
+extern crate parity_ui;
-extern crate parity_dapps_home;
 
+pub const HOME_PAGE: &'static str = "home";
 pub const DAPPS_DOMAIN : &'static str = ".parity";
 pub const RPC_PATH : &'static str =  "rpc";
 pub const API_PATH : &'static str =  "api";
 pub const UTILS_PATH : &'static str =  "parity-utils";
 
-pub fn main_page() -> &'static str {
-	"home"
-}
 pub fn redirection_address(using_dapps_domains: bool, app_id: &str) -> String {
 	if using_dapps_domains {
 		format!("http://{}{}/", app_id, DAPPS_DOMAIN)
@@ -45,36 +42,29 @@ pub fn redirection_address(using_dapps_domains: bool, app_id: &str) -> String {
 }
 
 pub fn utils() -> Box<Endpoint> {
-	Box::new(PageEndpoint::with_prefix(parity_dapps_home::App::default(), UTILS_PATH.to_owned()))
+	Box::new(PageEndpoint::with_prefix(parity_ui::App::default(), UTILS_PATH.to_owned()))
 }
 
-pub fn all_endpoints(dapps_path: String) -> Endpoints {
+pub fn all_endpoints(dapps_path: String, signer_port: Option<u16>) -> Endpoints {
 	// fetch fs dapps at first to avoid overwriting builtins
-	let mut pages = fs::local_endpoints(dapps_path);
+	let mut pages = fs::local_endpoints(dapps_path, signer_port);
-	// Home page needs to be safe embed
-	// because we use Cross-Origin LocalStorage.
-	// TODO [ToDr] Account naming should be moved to parity.
-	pages.insert("home".into(), Box::new(
-		PageEndpoint::new_safe_to_embed(parity_dapps_home::App::default())
-	));
-	pages.insert("proxy".into(), ProxyPac::boxed());
-	insert::<parity_dapps_status::App>(&mut pages, "parity");
-	insert::<parity_dapps_status::App>(&mut pages, "status");
 
-	// Optional dapps
+	// NOTE [ToDr] Dapps will be currently embeded on 8180
-	wallet_page(&mut pages);
+	insert::<parity_ui::App>(&mut pages, "ui", Embeddable::Yes(signer_port));
+	pages.insert("proxy".into(), ProxyPac::boxed(signer_port));
 
 	pages
 }
 
-#[cfg(feature = "parity-dapps-wallet")]
+fn insert<T : WebApp + Default + 'static>(pages: &mut Endpoints, id: &str, embed_at: Embeddable) {
-fn wallet_page(pages: &mut Endpoints) {
+	pages.insert(id.to_owned(), Box::new(match embed_at {
-	extern crate parity_dapps_wallet;
+		Embeddable::Yes(port) => PageEndpoint::new_safe_to_embed(T::default(), port),
-	insert::<parity_dapps_wallet::App>(pages, "wallet");
+		Embeddable::No => PageEndpoint::new(T::default()),
+	}));
 }
-#[cfg(not(feature = "parity-dapps-wallet"))]
-fn wallet_page(_pages: &mut Endpoints) {}
 
-fn insert<T : WebApp + Default + 'static>(pages: &mut Endpoints, id: &str) {
+enum Embeddable {
-	pages.insert(id.to_owned(), Box::new(PageEndpoint::new(T::default())));
+	Yes(Option<u16>),
+	#[allow(dead_code)]
+	No,
 }

dapps/src/apps/urlhint.rs

@@ -156,9 +156,9 @@ impl URLHintContract {
 			}
 
 			let mut it = vec.into_iter();
-			let account_slash_repo = it.next().unwrap();
+			let account_slash_repo = it.next().expect("element 0 of 3-len vector known to exist; qed");
-			let commit = it.next().unwrap();
+			let commit = it.next().expect("element 1 of 3-len vector known to exist; qed");
-			let owner = it.next().unwrap();
+			let owner = it.next().expect("element 2 of 3-len vector known to exist qed");
 
 			match (account_slash_repo, commit, owner) {
 				(Token::String(account_slash_repo), Token::FixedBytes(commit), Token::Address(owner)) => {

dapps/src/handlers/client/mod.rs

@@ -1,113 +0,0 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
-// This file is part of Parity.
-
-// Parity is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
-
-//! Hyper Client Handlers
-
-pub mod fetch_file;
-
-use std::env;
-use std::sync::{mpsc, Arc};
-use std::sync::atomic::AtomicBool;
-use std::path::PathBuf;
-
-use hyper;
-use https_fetch as https;
-
-use random_filename;
-use self::fetch_file::{Fetch, Error as HttpFetchError};
-
-pub type FetchResult = Result<PathBuf, FetchError>;
-
-#[derive(Debug)]
-pub enum FetchError {
-	InvalidUrl,
-	Http(HttpFetchError),
-	Https(https::FetchError),
-	Other(String),
-}
-
-impl From<HttpFetchError> for FetchError {
-	fn from(e: HttpFetchError) -> Self {
-		FetchError::Http(e)
-	}
-}
-
-pub struct Client {
-	http_client: hyper::Client<Fetch>,
-	https_client: https::Client,
-}
-
-impl Client {
-	pub fn new() -> Self {
-		Client {
-			http_client: hyper::Client::new().expect("Unable to initialize http client."),
-			https_client: https::Client::new().expect("Unable to initialize https client."),
-		}
-	}
-
-	pub fn close(self) {
-		self.http_client.close();
-		self.https_client.close();
-	}
-
-	pub fn request(&mut self, url: &str, abort: Arc<AtomicBool>, on_done: Box<Fn() + Send>) -> Result<mpsc::Receiver<FetchResult>, FetchError> {
-		let is_https = url.starts_with("https://");
-		let url = try!(url.parse().map_err(|_| FetchError::InvalidUrl));
-		trace!(target: "dapps", "Fetching from: {:?}", url);
-		if is_https {
-			let url = try!(Self::convert_url(url));
-
-			let (tx, rx) = mpsc::channel();
-			let temp_path = Self::temp_path();
-			let res = self.https_client.fetch_to_file(url, temp_path.clone(), abort, move |result| {
-				let res = tx.send(
-					result.map(|_| temp_path).map_err(FetchError::Https)
-				);
-				if let Err(_) = res {
-					warn!("Fetch finished, but no one was listening");
-				}
-				on_done();
-			});
-
-			match res {
-				Ok(_) => Ok(rx),
-				Err(e) => Err(FetchError::Other(format!("{:?}", e))),
-			}
-		} else {
-			let (tx, rx) = mpsc::channel();
-			let res = self.http_client.request(url, Fetch::new(tx, abort, on_done));
-
-			match res {
-				Ok(_) => Ok(rx),
-				Err(e) => Err(FetchError::Other(format!("{:?}", e))),
-			}
-		}
-	}
-
-	fn convert_url(url: hyper::Url) -> Result<https::Url, FetchError> {
-		let host = format!("{}", try!(url.host().ok_or(FetchError::InvalidUrl)));
-		let port = try!(url.port_or_known_default().ok_or(FetchError::InvalidUrl));
-		https::Url::new(&host, port, url.path()).map_err(|_| FetchError::InvalidUrl)
-	}
-
-	fn temp_path() -> PathBuf {
-		let mut dir = env::temp_dir();
-		dir.push(random_filename());
-		dir
-	}
-}
-
-

dapps/src/handlers/content.rs

@@ -19,57 +19,60 @@
 use std::io::Write;
 use hyper::{header, server, Decoder, Encoder, Next};
 use hyper::net::HttpStream;
+use hyper::mime::Mime;
 use hyper::status::StatusCode;
 
 use util::version;
 
+use handlers::add_security_headers;
+
 #[derive(Clone)]
 pub struct ContentHandler {
 	code: StatusCode,
 	content: String,
-	mimetype: String,
+	mimetype: Mime,
 	write_pos: usize,
+	safe_to_embed_at_port: Option<u16>,
 }
 
 impl ContentHandler {
-	pub fn ok(content: String, mimetype: String) -> Self {
+	pub fn ok(content: String, mimetype: Mime) -> Self {
-		ContentHandler {
+		Self::new(StatusCode::Ok, content, mimetype)
-			code: StatusCode::Ok,
-			content: content,
-			mimetype: mimetype,
-			write_pos: 0
-		}
 	}
 
-	pub fn not_found(content: String, mimetype: String) -> Self {
+	pub fn not_found(content: String, mimetype: Mime) -> Self {
-		ContentHandler {
+		Self::new(StatusCode::NotFound, content, mimetype)
-			code: StatusCode::NotFound,
-			content: content,
-			mimetype: mimetype,
-			write_pos: 0
-		}
 	}
 
-	pub fn html(code: StatusCode, content: String) -> Self {
+	pub fn html(code: StatusCode, content: String, embeddable_at: Option<u16>) -> Self {
-		Self::new(code, content, "text/html".into())
+		Self::new_embeddable(code, content, mime!(Text/Html), embeddable_at)
 	}
 
 	pub fn error(code: StatusCode, title: &str, message: &str, details: Option<&str>) -> Self {
+		Self::error_embeddable(code, title, message, details, None)
+	}
+
+	pub fn error_embeddable(code: StatusCode, title: &str, message: &str, details: Option<&str>, embeddable_at: Option<u16>) -> Self {
 		Self::html(code, format!(
 			include_str!("../error_tpl.html"),
 			title=title,
 			message=message,
 			details=details.unwrap_or_else(|| ""),
 			version=version(),
-		))
+		), embeddable_at)
 	}
 
-	pub fn new(code: StatusCode, content: String, mimetype: String) -> Self {
+	pub fn new(code: StatusCode, content: String, mimetype: Mime) -> Self {
+		Self::new_embeddable(code, content, mimetype, None)
+	}
+
+	pub fn new_embeddable(code: StatusCode, content: String, mimetype: Mime, embeddable_at: Option<u16>) -> Self {
 		ContentHandler {
 			code: code,
 			content: content,
 			mimetype: mimetype,
 			write_pos: 0,
+			safe_to_embed_at_port: embeddable_at,
 		}
 	}
 }
@@ -85,7 +88,8 @@ impl server::Handler<HttpStream> for ContentHandler {
 
 	fn on_response(&mut self, res: &mut server::Response) -> Next {
 		res.set_status(self.code);
-		res.headers_mut().set(header::ContentType(self.mimetype.parse().unwrap()));
+		res.headers_mut().set(header::ContentType(self.mimetype.clone()));
+		add_security_headers(&mut res.headers_mut(), self.safe_to_embed_at_port.clone());
 		Next::write()
 	}
 

dapps/src/handlers/echo.rs

@@ -17,82 +17,25 @@
 //! Echo Handler
 
 use std::io::Read;
-use hyper::{header, server, Decoder, Encoder, Next};
+use hyper::{server, Decoder, Encoder, Next};
-use hyper::method::Method;
 use hyper::net::HttpStream;
-use unicase::UniCase;
 use super::ContentHandler;
 
-#[derive(Debug, PartialEq)]
+#[derive(Default)]
-/// Type of Cross-Origin request
-enum Cors {
-	/// Not a Cross-Origin request - no headers needed
-	No,
-	/// Cross-Origin request with valid Origin
-	Allowed(String),
-	/// Cross-Origin request with invalid Origin
-	Forbidden,
-}
-
 pub struct EchoHandler {
-	safe_origins: Vec<String>,
 	content: String,
-	cors: Cors,
 	handler: Option<ContentHandler>,
 }
 
-impl EchoHandler {
-
-	pub fn cors(safe_origins: Vec<String>) -> Self {
-		EchoHandler {
-			safe_origins: safe_origins,
-			content: String::new(),
-			cors: Cors::Forbidden,
-			handler: None,
-		}
-	}
-
-	fn cors_header(&self, origin: Option<String>) -> Cors {
-		fn origin_is_allowed(origin: &str, safe_origins: &[String]) -> bool {
-			for safe in safe_origins {
-				if origin.starts_with(safe) {
-					return true;
-				}
-			}
-			false
-		}
-
-		match origin {
-			Some(ref origin) if origin_is_allowed(origin, &self.safe_origins) => {
-				Cors::Allowed(origin.clone())
-			},
-			None => Cors::No,
-			_ => Cors::Forbidden,
-		}
-	}
-}
-
 impl server::Handler<HttpStream> for EchoHandler {
-	fn on_request(&mut self, request: server::Request<HttpStream>) -> Next {
+	fn on_request(&mut self, _: server::Request<HttpStream>) -> Next {
-		let origin = request.headers().get_raw("origin")
+		Next::read()
-			.and_then(|list| list.get(0))
-			.and_then(|origin| String::from_utf8(origin.clone()).ok());
-
-		self.cors = self.cors_header(origin);
-
-		// Don't even read the payload if origin is forbidden!
-		if let Cors::Forbidden = self.cors {
-			self.handler = Some(ContentHandler::ok(String::new(), "text/plain".into()));
-			Next::write()
-		} else {
-			Next::read()
-		}
 	}
 
 	fn on_request_readable(&mut self, decoder: &mut Decoder<HttpStream>) -> Next {
 		match decoder.read_to_string(&mut self.content) {
 			Ok(0) => {
-				self.handler = Some(ContentHandler::ok(self.content.clone(), "application/json".into()));
+				self.handler = Some(ContentHandler::ok(self.content.clone(), mime!(Application/Json)));
 				Next::write()
 			},
 			Ok(_) => Next::read(),
@@ -104,45 +47,14 @@ impl server::Handler<HttpStream> for EchoHandler {
 	}
 
 	fn on_response(&mut self, res: &mut server::Response) -> Next {
-		if let Cors::Allowed(ref domain) = self.cors {
+		self.handler.as_mut()
-			let mut headers = res.headers_mut();
+			.expect("handler always set in on_request, which is before now; qed")
-			headers.set(header::Allow(vec![Method::Options, Method::Post, Method::Get]));
+			.on_response(res)
-			headers.set(header::AccessControlAllowHeaders(vec![
-				UniCase("origin".to_owned()),
-				UniCase("content-type".to_owned()),
-				UniCase("accept".to_owned()),
-			]));
-			headers.set(header::AccessControlAllowOrigin::Value(domain.clone()));
-		}
-		self.handler.as_mut().unwrap().on_response(res)
 	}
 
 	fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
-		self.handler.as_mut().unwrap().on_response_writable(encoder)
+		self.handler.as_mut()
+			.expect("handler always set in on_request, which is before now; qed")
+			.on_response_writable(encoder)
 	}
 }
-
-#[test]
-fn should_return_correct_cors_value() {
-	// given
-	let safe_origins = vec!["chrome-extension://".to_owned(), "http://localhost:8080".to_owned()];
-	let cut = EchoHandler {
-		safe_origins: safe_origins,
-		content: String::new(),
-		cors: Cors::No,
-		handler: None,
-	};
-
-	// when
-	let res1 = cut.cors_header(Some("http://ethcore.io".into()));
-	let res2 = cut.cors_header(Some("http://localhost:8080".into()));
-	let res3 = cut.cors_header(Some("chrome-extension://deadbeefcafe".into()));
-	let res4 = cut.cors_header(None);
-
-
-	// then
-	assert_eq!(res1, Cors::Forbidden);
-	assert_eq!(res2, Cors::Allowed("http://localhost:8080".into()));
-	assert_eq!(res3, Cors::Allowed("chrome-extension://deadbeefcafe".into()));
-	assert_eq!(res4, Cors::No);
-}

dapps/src/handlers/fetch.rs

@@ -22,13 +22,13 @@ use std::sync::{mpsc, Arc};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::time::{Instant, Duration};
 use util::Mutex;
+use fetch::{Client, Fetch, FetchResult};
 
 use hyper::{server, Decoder, Encoder, Next, Method, Control};
 use hyper::net::HttpStream;
 use hyper::status::StatusCode;
 
 use handlers::{ContentHandler, Redirection};
-use handlers::client::{Client, FetchResult};
 use apps::redirection_address;
 use page::LocalPageEndpoint;
 
@@ -159,7 +159,7 @@ impl<H: ContentValidator> ContentFetcherHandler<H> {
 		handler: H) -> (Self, Arc<FetchControl>) {
 
 		let fetch_control = Arc::new(FetchControl::default());
-		let client = Client::new();
+		let client = Client::default();
 		let handler = ContentFetcherHandler {
 			fetch_control: fetch_control.clone(),
 			control: Some(control),

dapps/src/handlers/mod.rs

@@ -21,7 +21,6 @@ mod echo;
 mod content;
 mod redirect;
 mod fetch;
-pub mod client;
 
 pub use self::auth::AuthRequiredHandler;
 pub use self::echo::EchoHandler;
@@ -31,7 +30,26 @@ pub use self::fetch::{ContentFetcherHandler, ContentValidator, FetchControl};
 
 use url::Url;
 use hyper::{server, header, net, uri};
+use signer_address;
 
+/// Adds security-related headers to the Response.
+pub fn add_security_headers(headers: &mut header::Headers, embeddable_at: Option<u16>) {
+	headers.set_raw("X-XSS-Protection", vec![b"1; mode=block".to_vec()]);
+	headers.set_raw("X-Content-Type-Options", vec![b"nosniff".to_vec()]);
+
+	// Embedding header:
+	if let Some(port) = embeddable_at {
+		headers.set_raw(
+			"X-Frame-Options",
+			vec![format!("ALLOW-FROM http://{}", signer_address(port)).into_bytes()]
+			);
+	} else {
+		// TODO [ToDr] Should we be more strict here (DENY?)?
+		headers.set_raw("X-Frame-Options",  vec![b"SAMEORIGIN".to_vec()]);
+	}
+}
+
+/// Extracts URL part from the Request.
 pub fn extract_url(req: &server::Request<net::HttpStream>) -> Option<Url> {
 	match *req.uri() {
 		uri::RequestUri::AbsoluteUri(ref url) => {

dapps/src/lib.rs

@@ -43,10 +43,8 @@
 #![warn(missing_docs)]
 #![cfg_attr(feature="nightly", plugin(clippy))]
 
-#[macro_use]
-extern crate log;
-extern crate url as url_lib;
 extern crate hyper;
+extern crate url as url_lib;
 extern crate unicase;
 extern crate serde;
 extern crate serde_json;
@@ -57,13 +55,21 @@ extern crate jsonrpc_core;
 extern crate jsonrpc_http_server;
 extern crate mime_guess;
 extern crate rustc_serialize;
-extern crate parity_dapps;
-extern crate https_fetch;
 extern crate ethcore_rpc;
 extern crate ethcore_util as util;
 extern crate linked_hash_map;
+extern crate fetch;
+extern crate parity_dapps_glue as parity_dapps;
+#[macro_use]
+extern crate log;
+#[macro_use]
+extern crate mime;
+
 #[cfg(test)]
 extern crate ethcore_devtools as devtools;
+#[cfg(test)]
+extern crate env_logger;
+
 
 mod endpoint;
 mod apps;
@@ -87,16 +93,16 @@ use jsonrpc_core::{IoHandler, IoDelegate};
 use router::auth::{Authorization, NoAuth, HttpBasicAuth};
 use ethcore_rpc::Extendable;
 
-static DAPPS_DOMAIN : &'static str = ".parity";
+use self::apps::{HOME_PAGE, DAPPS_DOMAIN};
 
 /// Indicates sync status
 pub trait SyncStatus: Send + Sync {
 	/// Returns true if there is a major sync happening.
-	fn is_major_syncing(&self) -> bool;
+	fn is_major_importing(&self) -> bool;
 }
 
 impl<F> SyncStatus for F where F: Fn() -> bool + Send + Sync {
-	fn is_major_syncing(&self) -> bool { self() }
+	fn is_major_importing(&self) -> bool { self() }
 }
 
 /// Webapps HTTP+RPC server build.
@@ -105,6 +111,7 @@ pub struct ServerBuilder {
 	handler: Arc<IoHandler>,
 	registrar: Arc<ContractClient>,
 	sync_status: Arc<SyncStatus>,
+	signer_port: Option<u16>,
 }
 
 impl Extendable for ServerBuilder {
@@ -121,6 +128,7 @@ impl ServerBuilder {
 			handler: Arc::new(IoHandler::new()),
 			registrar: registrar,
 			sync_status: Arc::new(|| false),
+			signer_port: None,
 		}
 	}
 
@@ -129,6 +137,11 @@ impl ServerBuilder {
 		self.sync_status = status;
 	}
 
+	/// Change default signer port.
+	pub fn with_signer_port(&mut self, signer_port: Option<u16>) {
+		self.signer_port = signer_port;
+	}
+
 	/// Asynchronously start server with no authentication,
 	/// returns result with `Server` handle on success or an error.
 	pub fn start_unsecured_http(&self, addr: &SocketAddr, hosts: Option<Vec<String>>) -> Result<Server, ServerError> {
@@ -138,6 +151,7 @@ impl ServerBuilder {
 			NoAuth,
 			self.handler.clone(),
 			self.dapps_path.clone(),
+			self.signer_port.clone(),
 			self.registrar.clone(),
 			self.sync_status.clone(),
 		)
@@ -152,6 +166,7 @@ impl ServerBuilder {
 			HttpBasicAuth::single_user(username, password),
 			self.handler.clone(),
 			self.dapps_path.clone(),
+			self.signer_port.clone(),
 			self.registrar.clone(),
 			self.sync_status.clone(),
 		)
@@ -180,26 +195,40 @@ impl Server {
 		Some(allowed)
 	}
 
+	/// Returns a list of CORS domains for API endpoint.
+	fn cors_domains(signer_port: Option<u16>) -> Vec<String> {
+		match signer_port {
+			Some(port) => vec![
+				format!("http://{}{}", HOME_PAGE, DAPPS_DOMAIN),
+				format!("http://{}", signer_address(port)),
+			],
+			None => vec![],
+		}
+	}
+
 	fn start_http<A: Authorization + 'static>(
 		addr: &SocketAddr,
 		hosts: Option<Vec<String>>,
 		authorization: A,
 		handler: Arc<IoHandler>,
 		dapps_path: String,
+		signer_port: Option<u16>,
 		registrar: Arc<ContractClient>,
 		sync_status: Arc<SyncStatus>,
 	) -> Result<Server, ServerError> {
 		let panic_handler = Arc::new(Mutex::new(None));
 		let authorization = Arc::new(authorization);
-		let content_fetcher = Arc::new(apps::fetcher::ContentFetcher::new(apps::urlhint::URLHintContract::new(registrar), sync_status));
+		let content_fetcher = Arc::new(apps::fetcher::ContentFetcher::new(apps::urlhint::URLHintContract::new(registrar), sync_status, signer_port));
-		let endpoints = Arc::new(apps::all_endpoints(dapps_path));
+		let endpoints = Arc::new(apps::all_endpoints(dapps_path, signer_port.clone()));
+		let cors_domains = Self::cors_domains(signer_port);
+
 		let special = Arc::new({
 			let mut special = HashMap::new();
 			special.insert(router::SpecialEndpoint::Rpc, rpc::rpc(handler, panic_handler.clone()));
 			special.insert(router::SpecialEndpoint::Utils, apps::utils());
 			special.insert(
 				router::SpecialEndpoint::Api,
-				api::RestApi::new(format!("{}", addr), endpoints.clone(), content_fetcher.clone())
+				api::RestApi::new(cors_domains, endpoints.clone(), content_fetcher.clone())
 			);
 			special
 		});
@@ -208,7 +237,7 @@ impl Server {
 		try!(hyper::Server::http(addr))
 			.handle(move |ctrl| router::Router::new(
 				ctrl,
-				apps::main_page(),
+				signer_port.clone(),
 				content_fetcher.clone(),
 				endpoints.clone(),
 				special.clone(),
@@ -272,6 +301,10 @@ pub fn random_filename() -> String {
 	rng.gen_ascii_chars().take(12).collect()
 }
 
+fn signer_address(port: u16) -> String {
+	format!("127.0.0.1:{}", port)
+}
+
 #[cfg(test)]
 mod util_tests {
 	use super::Server;
@@ -291,4 +324,17 @@ mod util_tests {
 		assert_eq!(address, Some(vec!["localhost".into(), "127.0.0.1".into()]));
 		assert_eq!(some, Some(vec!["ethcore.io".into(), "localhost".into(), "127.0.0.1".into()]));
 	}
+
+	#[test]
+	fn should_return_cors_domains() {
+		// given
+
+		// when
+		let none = Server::cors_domains(None);
+		let some = Server::cors_domains(Some(18180));
+
+		// then
+		assert_eq!(none, Vec::<String>::new());
+		assert_eq!(some, vec!["http://home.parity".to_owned(), "http://127.0.0.1:18180".into()]);
+	}
 }

dapps/src/page/builtin.rs

@@ -25,7 +25,7 @@ pub struct PageEndpoint<T : WebApp + 'static> {
 	/// Prefix to strip from the path (when `None` deducted from `app_id`)
 	pub prefix: Option<String>,
 	/// Safe to be loaded in frame by other origin. (use wisely!)
-	safe_to_embed: bool,
+	safe_to_embed_at_port: Option<u16>,
 	info: EndpointInfo,
 }
 
@@ -36,7 +36,7 @@ impl<T: WebApp + 'static> PageEndpoint<T> {
 		PageEndpoint {
 			app: Arc::new(app),
 			prefix: None,
-			safe_to_embed: false,
+			safe_to_embed_at_port: None,
 			info: EndpointInfo::from(info),
 		}
 	}
@@ -49,7 +49,7 @@ impl<T: WebApp + 'static> PageEndpoint<T> {
 		PageEndpoint {
 			app: Arc::new(app),
 			prefix: Some(prefix),
-			safe_to_embed: false,
+			safe_to_embed_at_port: None,
 			info: EndpointInfo::from(info),
 		}
 	}
@@ -57,12 +57,12 @@ impl<T: WebApp + 'static> PageEndpoint<T> {
 	/// Creates new `PageEndpoint` which can be safely used in iframe
 	/// even from different origin. It might be dangerous (clickjacking).
 	/// Use wisely!
-	pub fn new_safe_to_embed(app: T) -> Self {
+	pub fn new_safe_to_embed(app: T, port: Option<u16>) -> Self {
 		let info = app.info();
 		PageEndpoint {
 			app: Arc::new(app),
 			prefix: None,
-			safe_to_embed: true,
+			safe_to_embed_at_port: port,
 			info: EndpointInfo::from(info),
 		}
 	}
@@ -79,8 +79,8 @@ impl<T: WebApp> Endpoint for PageEndpoint<T> {
 			app: BuiltinDapp::new(self.app.clone()),
 			prefix: self.prefix.clone(),
 			path: path,
-			file: Default::default(),
+			file: handler::ServedFile::new(self.safe_to_embed_at_port.clone()),
-			safe_to_embed: self.safe_to_embed,
+			safe_to_embed_at_port: self.safe_to_embed_at_port.clone(),
 		})
 	}
 }

dapps/src/page/handler.rs

@@ -22,7 +22,7 @@ use hyper::net::HttpStream;
 use hyper::status::StatusCode;
 use hyper::{Decoder, Encoder, Next};
 use endpoint::EndpointPath;
-use handlers::ContentHandler;
+use handlers::{ContentHandler, add_security_headers};
 
 /// Represents a file that can be sent to client.
 /// Implementation should keep track of bytes already sent internally.
@@ -57,13 +57,14 @@ pub enum ServedFile<T: Dapp> {
 	Error(ContentHandler),
 }
 
-impl<T: Dapp> Default for ServedFile<T> {
+impl<T: Dapp> ServedFile<T> {
-	fn default() -> Self {
+	pub fn new(embeddable_at: Option<u16>) -> Self {
-		ServedFile::Error(ContentHandler::error(
+		ServedFile::Error(ContentHandler::error_embeddable(
 			StatusCode::NotFound,
 			"404 Not Found",
 			"Requested dapp resource was not found.",
-			None
+			None,
+			embeddable_at,
 		))
 	}
 }
@@ -81,7 +82,7 @@ pub struct PageHandler<T: Dapp> {
 	/// Requested path.
 	pub path: EndpointPath,
 	/// Flag indicating if the file can be safely embeded (put in iframe).
-	pub safe_to_embed: bool,
+	pub safe_to_embed_at_port: Option<u16>,
 }
 
 impl<T: Dapp> PageHandler<T> {
@@ -115,7 +116,7 @@ impl<T: Dapp> server::Handler<HttpStream> for PageHandler<T> {
 				self.app.file(&self.extract_path(url.path()))
 			},
 			_ => None,
-		}.map_or_else(|| ServedFile::default(), |f| ServedFile::File(f));
+		}.map_or_else(|| ServedFile::new(self.safe_to_embed_at_port.clone()), |f| ServedFile::File(f));
 		Next::write()
 	}
 
@@ -127,10 +128,14 @@ impl<T: Dapp> server::Handler<HttpStream> for PageHandler<T> {
 		match self.file {
 			ServedFile::File(ref f) => {
 				res.set_status(StatusCode::Ok);
-				res.headers_mut().set(header::ContentType(f.content_type().parse().unwrap()));
+
-				if !self.safe_to_embed {
+				match f.content_type().parse() {
-					res.headers_mut().set_raw("X-Frame-Options", vec![b"SAMEORIGIN".to_vec()]);
+					Ok(mime) => res.headers_mut().set(header::ContentType(mime)),
+					Err(()) => debug!(target: "page_handler", "invalid MIME type: {}", f.content_type()),
 				}
+
+				// Security headers:
+				add_security_headers(&mut res.headers_mut(), self.safe_to_embed_at_port);
 				Next::write()
 			},
 			ServedFile::Error(ref mut handler) => {
@@ -212,8 +217,8 @@ fn should_extract_path_with_appid() {
 			port: 8080,
 			using_dapps_domains: true,
 		},
-		file: Default::default(),
+		file: ServedFile::new(None),
-		safe_to_embed: true,
+		safe_to_embed_at_port: None,
 	};
 
 	// when

dapps/src/page/local.rs

@@ -26,14 +26,16 @@ pub struct LocalPageEndpoint {
 	path: PathBuf,
 	mime: Option<String>,
 	info: Option<EndpointInfo>,
+	embeddable_at: Option<u16>,
 }
 
 impl LocalPageEndpoint {
-	pub fn new(path: PathBuf, info: EndpointInfo) -> Self {
+	pub fn new(path: PathBuf, info: EndpointInfo, embeddable_at: Option<u16>) -> Self {
 		LocalPageEndpoint {
 			path: path,
 			mime: None,
 			info: Some(info),
+			embeddable_at: embeddable_at,
 		}
 	}
 
@@ -42,6 +44,7 @@ impl LocalPageEndpoint {
 			path: path,
 			mime: Some(mime),
 			info: None,
+			embeddable_at: None,
 		}
 	}
 
@@ -61,16 +64,16 @@ impl Endpoint for LocalPageEndpoint {
 				app: LocalSingleFile { path: self.path.clone(), mime: mime.clone() },
 				prefix: None,
 				path: path,
-				file: Default::default(),
+				file: handler::ServedFile::new(None),
-				safe_to_embed: false,
+				safe_to_embed_at_port: self.embeddable_at,
 			})
 		} else {
 			Box::new(handler::PageHandler {
 				app: LocalDapp { path: self.path.clone() },
 				prefix: None,
 				path: path,
-				file: Default::default(),
+				file: handler::ServedFile::new(None),
-				safe_to_embed: false,
+				safe_to_embed_at_port: self.embeddable_at,
 			})
 		}
 	}

dapps/src/proxypac.rs

@@ -18,31 +18,46 @@
 
 use endpoint::{Endpoint, Handler, EndpointPath};
 use handlers::ContentHandler;
-use apps::DAPPS_DOMAIN;
+use apps::{HOME_PAGE, DAPPS_DOMAIN};
+use signer_address;
 
-pub struct ProxyPac;
+pub struct ProxyPac {
+	signer_port: Option<u16>,
+}
 
 impl ProxyPac {
-	pub fn boxed() -> Box<Endpoint> {
+	pub fn boxed(signer_port: Option<u16>) -> Box<Endpoint> {
-		Box::new(ProxyPac)
+		Box::new(ProxyPac {
+			signer_port: signer_port
+		})
 	}
 }
 
 impl Endpoint for ProxyPac {
 	fn to_handler(&self, path: EndpointPath) -> Box<Handler> {
+		let signer = self.signer_port
+			.map(signer_address)
+			.unwrap_or_else(|| format!("{}:{}", path.host, path.port));
+
 		let content = format!(
 r#"
 function FindProxyForURL(url, host) {{
-	if (shExpMatch(host, "*{0}"))
+	if (shExpMatch(host, "{0}{1}"))
 	{{
-		return "PROXY {1}:{2}";
+		return "PROXY {4}";
+	}}
+
+	if (shExpMatch(host, "*{1}"))
+	{{
+		return "PROXY {2}:{3}";
 	}}
 
 	return "DIRECT";
 }}
 "#,
-			DAPPS_DOMAIN, path.host, path.port);
+		HOME_PAGE, DAPPS_DOMAIN, path.host, path.port, signer);
-		Box::new(ContentHandler::ok(content, "application/javascript".to_owned()))
+
+		Box::new(ContentHandler::ok(content, mime!(Application/Javascript)))
 	}
 }
 

dapps/src/router/host_validation.rs

@@ -15,7 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 
-use DAPPS_DOMAIN;
+use apps::DAPPS_DOMAIN;
 use hyper::{server, header, StatusCode};
 use hyper::net::HttpStream;
 

dapps/src/router/mod.rs

@@ -20,13 +20,13 @@
 pub mod auth;
 mod host_validation;
 
-use DAPPS_DOMAIN;
+use signer_address;
 use std::sync::Arc;
 use std::collections::HashMap;
 use url::{Url, Host};
 use hyper::{self, server, Next, Encoder, Decoder, Control, StatusCode};
 use hyper::net::HttpStream;
-use apps;
+use apps::{self, DAPPS_DOMAIN};
 use apps::fetcher::ContentFetcher;
 use endpoint::{Endpoint, Endpoints, EndpointPath};
 use handlers::{Redirection, extract_url, ContentHandler};
@@ -43,7 +43,7 @@ pub enum SpecialEndpoint {
 
 pub struct Router<A: Authorization + 'static> {
 	control: Option<Control>,
-	main_page: &'static str,
+	signer_port: Option<u16>,
 	endpoints: Arc<Endpoints>,
 	fetch: Arc<ContentFetcher>,
 	special: Arc<HashMap<SpecialEndpoint, Box<Endpoint>>>,
@@ -61,54 +61,81 @@ impl<A: Authorization + 'static> server::Handler<HttpStream> for Router<A> {
 		let endpoint = extract_endpoint(&url);
 		let is_utils = endpoint.1 == SpecialEndpoint::Utils;
 
+		trace!(target: "dapps", "Routing request to {:?}. Details: {:?}", url, req);
+
 		// Validate Host header
 		if let Some(ref hosts) = self.allowed_hosts {
+			trace!(target: "dapps", "Validating host headers against: {:?}", hosts);
 			let is_valid = is_utils || host_validation::is_valid(&req, hosts, self.endpoints.keys().cloned().collect());
 			if !is_valid {
+				debug!(target: "dapps", "Rejecting invalid host header.");
 				self.handler = host_validation::host_invalid_response();
 				return self.handler.on_request(req);
 			}
 		}
 
+		trace!(target: "dapps", "Checking authorization.");
 		// Check authorization
 		let auth = self.authorization.is_authorized(&req);
 		if let Authorized::No(handler) = auth {
+			debug!(target: "dapps", "Authorization denied.");
 			self.handler = handler;
 			return self.handler.on_request(req);
 		}
 
 		let control = self.control.take().expect("on_request is called only once; control is always defined at start; qed");
+		debug!(target: "dapps", "Handling endpoint request: {:?}", endpoint);
 		self.handler = match endpoint {
 			// First check special endpoints
 			(ref path, ref endpoint) if self.special.contains_key(endpoint) => {
-				self.special.get(endpoint).unwrap().to_async_handler(path.clone().unwrap_or_default(), control)
+				trace!(target: "dapps", "Resolving to special endpoint.");
+				self.special.get(endpoint)
+					.expect("special known to contain key; qed")
+					.to_async_handler(path.clone().unwrap_or_default(), control)
 			},
 			// Then delegate to dapp
 			(Some(ref path), _) if self.endpoints.contains_key(&path.app_id) => {
-				self.endpoints.get(&path.app_id).unwrap().to_async_handler(path.clone(), control)
+				trace!(target: "dapps", "Resolving to local/builtin dapp.");
+				self.endpoints.get(&path.app_id)
+					.expect("special known to contain key; qed")
+					.to_async_handler(path.clone(), control)
 			},
 			// Try to resolve and fetch the dapp
 			(Some(ref path), _) if self.fetch.contains(&path.app_id) => {
+				trace!(target: "dapps", "Resolving to fetchable content.");
 				self.fetch.to_async_handler(path.clone(), control)
 			},
 			// 404 for non-existent content
-			(Some(ref path), _) if *req.method() == hyper::method::Method::Get => {
+			(Some(_), _) if *req.method() == hyper::method::Method::Get => {
-				let address = apps::redirection_address(path.using_dapps_domains, self.main_page);
+				trace!(target: "dapps", "Resolving to 404.");
 				Box::new(ContentHandler::error(
 					StatusCode::NotFound,
 					"404 Not Found",
 					"Requested content was not found.",
-					Some(&format!("Go back to the <a href=\"{}\">Home Page</a>.", address))
+					None,
 				))
 			},
-			// Redirect any GET request to home.
+			// Redirect any other GET request to signer.
 			_ if *req.method() == hyper::method::Method::Get => {
-				let address = apps::redirection_address(false, self.main_page);
+				if let Some(port) = self.signer_port {
-				Redirection::boxed(address.as_str())
+					trace!(target: "dapps", "Redirecting to signer interface.");
+					Redirection::boxed(&format!("http://{}", signer_address(port)))
+				} else {
+					trace!(target: "dapps", "Signer disabled, returning 404.");
+					Box::new(ContentHandler::error(
+						StatusCode::NotFound,
+						"404 Not Found",
+						"Your homepage is not available when Trusted Signer is disabled.",
+						Some("You can still access dapps by writing a correct address, though. Re-enabled Signer to get your homepage back."),
+					))
+				}
 			},
 			// RPC by default
 			_ => {
-				self.special.get(&SpecialEndpoint::Rpc).unwrap().to_async_handler(EndpointPath::default(), control)
+				trace!(target: "dapps", "Resolving to RPC call.");
+				self.special.get(&SpecialEndpoint::Rpc)
+					.expect("RPC endpoint always stored; qed")
+					.to_async_handler(EndpointPath::default(), control)
 			}
 		};
 
@@ -135,7 +162,7 @@ impl<A: Authorization + 'static> server::Handler<HttpStream> for Router<A> {
 impl<A: Authorization> Router<A> {
 	pub fn new(
 		control: Control,
-		main_page: &'static str,
+		signer_port: Option<u16>,
 		content_fetcher: Arc<ContentFetcher>,
 		endpoints: Arc<Endpoints>,
 		special: Arc<HashMap<SpecialEndpoint, Box<Endpoint>>>,
@@ -143,10 +170,12 @@ impl<A: Authorization> Router<A> {
 		allowed_hosts: Option<Vec<String>>,
 		) -> Self {
 
-		let handler = special.get(&SpecialEndpoint::Utils).unwrap().to_handler(EndpointPath::default());
+		let handler = special.get(&SpecialEndpoint::Utils)
+			.expect("Utils endpoint always stored; qed")
+			.to_handler(EndpointPath::default());
 		Router {
 			control: Some(control),
-			main_page: main_page,
+			signer_port: signer_port,
 			endpoints: endpoints,
 			fetch: content_fetcher,
 			special: special,

dapps/src/rpc.rs

@@ -24,7 +24,7 @@ pub fn rpc(handler: Arc<IoHandler>, panic_handler: Arc<Mutex<Option<Box<Fn() ->
 	Box::new(RpcEndpoint {
 		handler: handler,
 		panic_handler: panic_handler,
-		cors_domain: Some(vec![AccessControlAllowOrigin::Null]),
+		cors_domain: None,
 		// NOTE [ToDr] We don't need to do any hosts validation here. It's already done in router.
 		allowed_hosts: None,
 	})

dapps/src/tests/api.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use tests::helpers::{serve, serve_with_registrar, request};
+use tests::helpers::{serve, serve_with_registrar, request, assert_security_headers};
 
 #[test]
 fn should_return_error() {
@@ -34,8 +34,9 @@ fn should_return_error() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 404 Not Found".to_owned());
-	assert_eq!(response.headers.get(0).unwrap(), "Content-Type: application/json");
+	assert_eq!(response.headers.get(3).unwrap(), "Content-Type: application/json");
 	assert_eq!(response.body, format!("58\n{}\n0\n\n", r#"{"code":"404","title":"Not Found","detail":"Resource you requested has not been found."}"#));
+	assert_security_headers(&response.headers);
 }
 
 #[test]
@@ -56,8 +57,9 @@ fn should_serve_apps() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
-	assert_eq!(response.headers.get(0).unwrap(), "Content-Type: application/json");
+	assert_eq!(response.headers.get(3).unwrap(), "Content-Type: application/json");
-	assert!(response.body.contains("Parity Home Screen"), response.body);
+	assert!(response.body.contains("Parity UI"), response.body);
+	assert_security_headers(&response.headers);
 }
 
 #[test]
@@ -78,8 +80,9 @@ fn should_handle_ping() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
-	assert_eq!(response.headers.get(0).unwrap(), "Content-Type: application/json");
+	assert_eq!(response.headers.get(3).unwrap(), "Content-Type: application/json");
 	assert_eq!(response.body, "0\n\n".to_owned());
+	assert_security_headers(&response.headers);
 }
 
 
@@ -101,5 +104,57 @@ fn should_try_to_resolve_dapp() {
 	// then
 	assert_eq!(response.status, "HTTP/1.1 404 Not Found".to_owned());
 	assert_eq!(registrar.calls.lock().len(), 2);
+	assert_security_headers(&response.headers);
 }
 
+#[test]
+fn should_return_signer_port_cors_headers() {
+	// given
+	let server = serve();
+
+	// when
+	let response = request(server,
+		"\
+			POST /api/ping HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Origin: http://127.0.0.1:18180\r\n\
+			Connection: close\r\n\
+			\r\n\
+			{}
+		"
+	);
+
+	// then
+	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
+	assert!(
+		response.headers_raw.contains("Access-Control-Allow-Origin: http://127.0.0.1:18180"),
+		"CORS header for signer missing: {:?}",
+		response.headers
+	);
+}
+
+#[test]
+fn should_return_signer_port_cors_headers_for_home_parity() {
+	// given
+	let server = serve();
+
+	// when
+	let response = request(server,
+		"\
+			POST /api/ping HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Origin: http://home.parity\r\n\
+			Connection: close\r\n\
+			\r\n\
+			{}
+		"
+	);
+
+	// then
+	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
+	assert!(
+		response.headers_raw.contains("Access-Control-Allow-Origin: http://home.parity"),
+		"CORS header for home.parity missing: {:?}",
+		response.headers
+	);
+}

dapps/src/tests/authorization.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use tests::helpers::{serve_with_auth, request};
+use tests::helpers::{serve_with_auth, request, assert_security_headers_for_embed};
 
 #[test]
 fn should_require_authorization() {
@@ -66,7 +66,7 @@ fn should_allow_on_valid_auth() {
 	// when
 	let response = request(server,
 		"\
-			GET /home/ HTTP/1.1\r\n\
+			GET /ui/ HTTP/1.1\r\n\
 			Host: 127.0.0.1:8080\r\n\
 			Connection: close\r\n\
 			Authorization: Basic QWxhZGRpbjpPcGVuU2VzYW1l\r\n
@@ -76,4 +76,5 @@ fn should_allow_on_valid_auth() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
+	assert_security_headers_for_embed(&response.headers);
 }

dapps/src/tests/fetch.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use tests::helpers::{serve_with_registrar, request};
+use tests::helpers::{serve_with_registrar, serve_with_registrar_and_sync, request, assert_security_headers};
 
 #[test]
 fn should_resolve_dapp() {
@@ -34,5 +34,34 @@ fn should_resolve_dapp() {
 	// then
 	assert_eq!(response.status, "HTTP/1.1 404 Not Found".to_owned());
 	assert_eq!(registrar.calls.lock().len(), 2);
+	assert_security_headers(&response.headers);
 }
 
+#[test]
+fn should_return_503_when_syncing_but_should_make_the_calls() {
+	// given
+	let (server, registrar) = serve_with_registrar_and_sync();
+	{
+		let mut responses = registrar.responses.lock();
+		let res1 = responses.get(0).unwrap().clone();
+		let res2 = responses.get(1).unwrap().clone();
+		// Registrar will be called twice - fill up the responses.
+		responses.push(res1);
+		responses.push(res2);
+	}
+
+	// when
+	let response = request(server,
+		"\
+			GET / HTTP/1.1\r\n\
+			Host: 1472a9e190620cdf6b31f383373e45efcfe869a820c91f9ccd7eb9fb45e4985d.parity\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	assert_eq!(response.status, "HTTP/1.1 503 Service Unavailable".to_owned());
+	assert_eq!(registrar.calls.lock().len(), 4);
+	assert_security_headers(&response.headers);
+}

dapps/src/tests/helpers.rs

@@ -18,6 +18,7 @@ use std::env;
 use std::str;
 use std::sync::Arc;
 use rustc_serialize::hex::FromHex;
+use env_logger::LogBuilder;
 
 use ServerBuilder;
 use Server;
@@ -27,6 +28,7 @@ use devtools::http_client;
 
 const REGISTRAR: &'static str = "8e4e9b13d4b45cb0befc93c3061b1408f67316b2";
 const URLHINT: &'static str = "deadbeefcafe0000000000000000000000000000";
+const SIGNER_PORT: u16 = 18180;
 
 pub struct FakeRegistrar {
 	pub calls: Arc<Mutex<Vec<(String, String)>>>,
@@ -58,11 +60,23 @@ impl ContractClient for FakeRegistrar {
 	}
 }
 
-pub fn init_server(hosts: Option<Vec<String>>) -> (Server, Arc<FakeRegistrar>) {
+fn init_logger() {
+	// Initialize logger
+	if let Ok(log) = env::var("RUST_LOG") {
+		let mut builder = LogBuilder::new();
+		builder.parse(&log);
+		builder.init().expect("Logger is initialized only once.");
+	}
+}
+
+pub fn init_server(hosts: Option<Vec<String>>, is_syncing: bool) -> (Server, Arc<FakeRegistrar>) {
+	init_logger();
 	let registrar = Arc::new(FakeRegistrar::new());
 	let mut dapps_path = env::temp_dir();
 	dapps_path.push("non-existent-dir-to-prevent-fs-files-from-loading");
-	let builder = ServerBuilder::new(dapps_path.to_str().unwrap().into(), registrar.clone());
+	let mut builder = ServerBuilder::new(dapps_path.to_str().unwrap().into(), registrar.clone());
+	builder.with_sync_status(Arc::new(move || is_syncing));
+	builder.with_signer_port(Some(SIGNER_PORT));
 	(
 		builder.start_unsecured_http(&"127.0.0.1:0".parse().unwrap(), hosts).unwrap(),
 		registrar,
@@ -70,25 +84,38 @@ pub fn init_server(hosts: Option<Vec<String>>) -> (Server, Arc<FakeRegistrar>) {
 }
 
 pub fn serve_with_auth(user: &str, pass: &str) -> Server {
+	init_logger();
 	let registrar = Arc::new(FakeRegistrar::new());
 	let mut dapps_path = env::temp_dir();
 	dapps_path.push("non-existent-dir-to-prevent-fs-files-from-loading");
-	let builder = ServerBuilder::new(dapps_path.to_str().unwrap().into(), registrar);
+	let mut builder = ServerBuilder::new(dapps_path.to_str().unwrap().into(), registrar);
+	builder.with_signer_port(Some(SIGNER_PORT));
 	builder.start_basic_auth_http(&"127.0.0.1:0".parse().unwrap(), None, user, pass).unwrap()
 }
 
 pub fn serve_hosts(hosts: Option<Vec<String>>) -> Server {
-	init_server(hosts).0
+	init_server(hosts, false).0
 }
 
 pub fn serve_with_registrar() -> (Server, Arc<FakeRegistrar>) {
-	init_server(None)
+	init_server(None, false)
+}
+
+pub fn serve_with_registrar_and_sync() -> (Server, Arc<FakeRegistrar>) {
+	init_server(None, true)
 }
 
 pub fn serve() -> Server {
-	init_server(None).0
+	init_server(None, false).0
 }
 
 pub fn request(server: Server, request: &str) -> http_client::Response {
 	http_client::request(server.addr(), request)
 }
+
+pub fn assert_security_headers(headers: &[String]) {
+	http_client::assert_security_headers_present(headers, None)
+}
+pub fn assert_security_headers_for_embed(headers: &[String]) {
+	http_client::assert_security_headers_present(headers, Some(SIGNER_PORT))
+}

dapps/src/tests/redirection.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use tests::helpers::{serve, request};
+use tests::helpers::{serve, request, assert_security_headers};
 
 #[test]
 fn should_redirect_to_home() {
@@ -33,7 +33,7 @@ fn should_redirect_to_home() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 302 Found".to_owned());
-	assert_eq!(response.headers.get(0).unwrap(), "Location: /home/");
+	assert_eq!(response.headers.get(0).unwrap(), "Location: http://127.0.0.1:18180");
 }
 
 #[test]
@@ -53,7 +53,7 @@ fn should_redirect_to_home_when_trailing_slash_is_missing() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 302 Found".to_owned());
-	assert_eq!(response.headers.get(0).unwrap(), "Location: /home/");
+	assert_eq!(response.headers.get(0).unwrap(), "Location: http://127.0.0.1:18180");
 }
 
 #[test]
@@ -73,7 +73,7 @@ fn should_display_404_on_invalid_dapp() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 404 Not Found".to_owned());
-	assert!(response.body.contains("href=\"/home/"));
+	assert_security_headers(&response.headers);
 }
 
 #[test]
@@ -93,7 +93,7 @@ fn should_display_404_on_invalid_dapp_with_domain() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 404 Not Found".to_owned());
-	assert!(response.body.contains("href=\"http://home.parity/"));
+	assert_security_headers(&response.headers);
 }
 
 #[test]
@@ -159,7 +159,8 @@ fn should_serve_proxy_pac() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
-	assert_eq!(response.body, "86\n\nfunction FindProxyForURL(url, host) {\n\tif (shExpMatch(host, \"*.parity\"))\n\t{\n\t\treturn \"PROXY 127.0.0.1:8080\";\n\t}\n\n\treturn \"DIRECT\";\n}\n\n0\n\n".to_owned());
+	assert_eq!(response.body, "D5\n\nfunction FindProxyForURL(url, host) {\n\tif (shExpMatch(host, \"home.parity\"))\n\t{\n\t\treturn \"PROXY 127.0.0.1:18180\";\n\t}\n\n\tif (shExpMatch(host, \"*.parity\"))\n\t{\n\t\treturn \"PROXY 127.0.0.1:8080\";\n\t}\n\n\treturn \"DIRECT\";\n}\n\n0\n\n".to_owned());
+	assert_security_headers(&response.headers);
 }
 
 #[test]
@@ -181,5 +182,6 @@ fn should_serve_utils() {
 	// then
 	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
 	assert_eq!(response.body.contains("function(){"), true);
+	assert_security_headers(&response.headers);
 }
 

dapps/src/tests/validation.rs

@@ -45,7 +45,7 @@ fn should_allow_valid_host() {
 	// when
 	let response = request(server,
 		"\
-			GET /home/ HTTP/1.1\r\n\
+			GET /ui/ HTTP/1.1\r\n\
 			Host: localhost:8080\r\n\
 			Connection: close\r\n\
 			\r\n\
@@ -66,7 +66,7 @@ fn should_serve_dapps_domains() {
 	let response = request(server,
 		"\
 			GET / HTTP/1.1\r\n\
-			Host: home.parity\r\n\
+			Host: ui.parity\r\n\
 			Connection: close\r\n\
 			\r\n\
 			{}
@@ -98,3 +98,30 @@ fn should_allow_parity_utils_even_on_invalid_domain() {
 	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
 }
 
+#[test]
+fn should_not_return_cors_headers_for_rpc() {
+	// given
+	let server = serve_hosts(Some(vec!["localhost:8080".into()]));
+
+	// when
+	let response = request(server,
+		"\
+			POST /rpc HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Origin: null\r\n\
+			Content-Type: application/json\r\n\
+			Connection: close\r\n\
+			\r\n\
+			{}
+		"
+	);
+
+	// then
+	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
+	assert!(
+		!response.headers_raw.contains("Access-Control-Allow-Origin"),
+		"CORS headers were not expected: {:?}",
+		response.headers
+	);
+}
+

dapps/ui/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+description = "Ethcore Parity UI"
+homepage = "http://ethcore.io"
+license = "GPL-3.0"
+name = "parity-ui"
+version = "1.4.0"
+authors = ["Ethcore <admin@ethcore.io>"]
+
+[build-dependencies]
+rustc_version = "0.1"
+
+[dependencies]
+parity-ui-dev = { path = "../../js", optional = true }
+parity-ui-precompiled = { git = "https://github.com/ethcore/js-precompiled.git", optional = true }
+
+[features]
+no-precompiled-js = ["parity-ui-dev"]
+use-precompiled-js = ["parity-ui-precompiled"]

dapps/ui/src/lib.rs

@@ -0,0 +1,33 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+
+#[cfg(feature = "parity-ui-dev")]
+mod inner {
+	extern crate parity_ui_dev;
+
+	pub use self::parity_ui_dev::*;
+}
+
+#[cfg(feature = "parity-ui-precompiled")]
+mod inner {
+	extern crate parity_ui_precompiled;
+
+	pub use self::parity_ui_precompiled::*;
+}
+
+
+pub use self::inner::*;

db/src/database.rs

@@ -157,7 +157,7 @@ impl Drop for Database {
 	}
 }
 
-#[derive(Ipc)]
+#[ipc]
 impl DatabaseService for Database {
 	fn open(&self, config: DatabaseConfig, path: String) -> Result<(), Error> {
 		let mut db = self.db.write();

devtools/src/http_client.rs

@@ -64,3 +64,25 @@ pub fn request(address: &SocketAddr, request: &str) -> Response {
 	}
 }
 
+/// Check if all required security headers are present
+pub fn assert_security_headers_present(headers: &[String], port: Option<u16>) {
+	if let Some(port) = port {
+		assert!(
+			headers.iter().find(|header| header.as_str() == &format!("X-Frame-Options: ALLOW-FROM http://127.0.0.1:{}", port)).is_some(),
+			"X-Frame-Options: ALLOW-FROM missing: {:?}", headers
+		);
+	} else {
+		assert!(
+			headers.iter().find(|header| header.as_str() == "X-Frame-Options: SAMEORIGIN").is_some(),
+			"X-Frame-Options: SAMEORIGIN missing: {:?}", headers
+		);
+	}
+	assert!(
+		headers.iter().find(|header| header.as_str() == "X-XSS-Protection: 1; mode=block").is_some(),
+		"X-XSS-Protection missing: {:?}", headers
+	);
+	assert!(
+		headers.iter().find(|header|  header.as_str() == "X-Content-Type-Options: nosniff").is_some(),
+		"X-Content-Type-Options missing: {:?}", headers
+	);
+}

docker/ubuntu-stable/Dockerfile

@@ -0,0 +1,39 @@
+FROM ubuntu:14.04
+WORKDIR /build
+# install tools and dependencies
+RUN apt-get update && \
+        apt-get install -y \
+        g++ \
+        curl \
+        git \
+        file \
+        binutils
+
+# install rustup
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
+
+# rustup directory
+ENV PATH /root/.cargo/bin:$PATH
+
+# show backtraces
+ENV RUST_BACKTRACE 1
+
+# show tools
+RUN rustc -vV && \
+cargo -V && \
+gcc -v &&\
+g++ -v
+
+# build parity
+RUN git clone https://github.com/ethcore/parity && \
+        cd parity && \
+        git checkout stable && \
+        git pull && \
+        cargo build --release --verbose && \
+        ls /build/parity/target/release/parity && \
+        strip /build/parity/target/release/parity
+
+RUN file /build/parity/target/release/parity
+
+EXPOSE 8080 8545 8180
+ENTRYPOINT ["/build/parity/target/release/parity"]

ethash/Cargo.toml

@@ -9,4 +9,4 @@ authors = ["arkpar <arkadiy@ethcore.io"]
 log = "0.3"
 sha3 = { path = "../util/sha3" }
 primal = "0.2.3"
-parking_lot = "0.2.6"
+parking_lot = "0.3"

ethash/src/compute.rs

@@ -202,6 +202,9 @@ impl SeedHashCompute {
 	}
 }
 
+pub fn slow_get_seedhash(block_number: u64) -> H256 {
+	SeedHashCompute::resume_compute_seedhash([0u8; 32], 0, block_number / ETHASH_EPOCH_LENGTH)
+}
 
 #[inline]
 fn fnv_hash(x: u32, y: u32) -> u32 {

ethash/src/lib.rs

@@ -26,7 +26,7 @@ mod compute;
 
 use std::mem;
 use compute::Light;
-pub use compute::{ETHASH_EPOCH_LENGTH, H256, ProofOfWork, SeedHashCompute, quick_get_difficulty};
+pub use compute::{ETHASH_EPOCH_LENGTH, H256, ProofOfWork, SeedHashCompute, quick_get_difficulty, slow_get_seedhash};
 
 use std::sync::Arc;
 use parking_lot::Mutex;

ethcore/Cargo.toml

@@ -37,6 +37,9 @@ ethkey = { path = "../ethkey" }
 ethcore-ipc-nano = { path = "../ipc/nano" }
 rlp = { path = "../util/rlp" }
 rand = "0.3"
+lru-cache = { git = "https://github.com/contain-rs/lru-cache" }
+ethcore-bloom-journal = { path = "../util/bloom" }
+byteorder = "0.5"
 
 [dependencies.hyper]
 git = "https://github.com/ethcore/hyper"
@@ -44,7 +47,9 @@ default-features = false
 
 [features]
 jit = ["evmjit"]
-evm-debug = []
+evm-debug = ["slow-blocks"]
+evm-debug-tests = ["evm-debug"]
+slow-blocks = [] # Use SLOW_TX_DURATION="50" (compile time!) to track transactions over 50ms
 json-tests = []
 test-heavy = []
 dev = ["clippy"]

ethcore/build.rs

@@ -18,7 +18,7 @@ extern crate ethcore_ipc_codegen;
 
 fn main() {
 	ethcore_ipc_codegen::derive_binary("src/types/mod.rs.in").unwrap();
-	ethcore_ipc_codegen::derive_ipc("src/client/traits.rs").unwrap();
+	ethcore_ipc_codegen::derive_ipc_cond("src/client/traits.rs", cfg!(feature="ipc")).unwrap();
-	ethcore_ipc_codegen::derive_ipc("src/snapshot/snapshot_service_trait.rs").unwrap();
+	ethcore_ipc_codegen::derive_ipc_cond("src/snapshot/snapshot_service_trait.rs", cfg!(feature="ipc")).unwrap();
-	ethcore_ipc_codegen::derive_ipc("src/client/chain_notify.rs").unwrap();
+	ethcore_ipc_codegen::derive_ipc_cond("src/client/chain_notify.rs", cfg!(feature="ipc")).unwrap();
 }

ethcore/res/ethereum/classic.json

@@ -10,7 +10,8 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0x118c30"
+				"homesteadTransition": "0x118c30",
+				"eip150Transition": "0x2625a0"
 			}
 		}
 	},

ethcore/res/ethereum/eip150_test.json

@@ -0,0 +1,43 @@
+{
+	"name": "Homestead (Test)",
+	"engine": {
+		"Ethash": {
+			"params": {
+				"gasLimitBoundDivisor": "0x0400",
+				"minimumDifficulty": "0x020000",
+				"difficultyBoundDivisor": "0x0800",
+				"durationLimit": "0x0d",
+				"blockReward": "0x4563918244F40000",
+				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
+				"homesteadTransition": "0x0",
+				"eip150Transition": "0x0"
+			}
+		}
+	},
+	"params": {
+		"accountStartNonce": "0x00",
+		"maximumExtraDataSize": "0x20",
+		"minGasLimit": "0x1388",
+		"networkID" : "0x1"
+	},
+	"genesis": {
+		"seal": {
+			"ethereum": {
+				"nonce": "0x0000000000000042",
+				"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
+			}
+		},
+		"difficulty": "0x400000000",
+		"author": "0x0000000000000000000000000000000000000000",
+		"timestamp": "0x00",
+		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+		"extraData": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
+		"gasLimit": "0x1388"
+	},
+	"accounts": {
+		"0000000000000000000000000000000000000001": { "balance": "1", "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
+		"0000000000000000000000000000000000000002": { "balance": "1", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
+		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
+		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } }
+	}
+}

ethcore/res/ethereum/expanse.json

@@ -0,0 +1,70 @@
+{
+	"name": "Expanse",
+	"forkName": "expanse",
+	"engine": {
+		"Ethash": {
+			"params": {
+				"gasLimitBoundDivisor": "0x0400",
+				"minimumDifficulty": "0x020000",
+				"difficultyBoundDivisor": "0x0800",
+				"difficultyIncrementDivisor": "60",
+				"durationLimit": "0x3C",
+				"blockReward": "0x6f05b59d3b200000",
+				"registrar" : "0x6c221ca53705f3497ec90ca7b84c59ae7382fc21",
+				"homesteadTransition": "0x30d40",
+				"difficultyHardforkTransition": "0x59d9",
+				"difficultyHardforkBoundDivisor": "0x0200",
+				"bombDefuseTransition": "0x30d40",
+				"eip150Transition": "0x7fffffffffffffff"				
+			}
+		}
+	},
+	"params": {
+		"accountStartNonce": "0x00",
+		"maximumExtraDataSize": "0x20",
+		"minGasLimit": "0x1388",
+		"networkID": "0x1",
+		"subprotocolName": "exp"
+	},
+	"genesis": {
+		"seal": {
+			"ethereum": {
+				"nonce": "0x214652414e4b4f21",
+				"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
+			}
+		},
+		"difficulty": "0x40000000",
+		"author": "0x93decab0cd745598860f782ac1e8f046cb99e898",
+		"timestamp": "0x00",
+		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+		"extraData": "0x4672616e6b6f497346726565646f6d",
+		"gasLimit": "0x1388"
+	},
+	"nodes": [
+		"enode://7f335a047654f3e70d6f91312a7cf89c39704011f1a584e2698250db3d63817e74b88e26b7854111e16b2c9d0c7173c05419aeee2d0321850227b126d8b1be3f@46.101.156.249:42786",
+		"enode://df872f81e25f72356152b44cab662caf1f2e57c3a156ecd20e9ac9246272af68a2031b4239a0bc831f2c6ab34733a041464d46b3ea36dce88d6c11714446e06b@178.62.208.109:42786",
+		"enode://96d3919b903e7f5ad59ac2f73c43be9172d9d27e2771355db03fd194732b795829a31fe2ea6de109d0804786c39a807e155f065b4b94c6fce167becd0ac02383@45.55.22.34:42786",
+		"enode://5f6c625bf287e3c08aad568de42d868781e961cbda805c8397cfb7be97e229419bef9a5a25a75f97632787106bba8a7caf9060fab3887ad2cfbeb182ab0f433f@46.101.182.53:42786",
+		"enode://d33a8d4c2c38a08971ed975b750f21d54c927c0bf7415931e214465a8d01651ecffe4401e1db913f398383381413c78105656d665d83f385244ab302d6138414@128.199.183.48:42786",
+		"enode://df872f81e25f72356152b44cab662caf1f2e57c3a156ecd20e9ac9246272af68a2031b4239a0bc831f2c6ab34733a041464d46b3ea36dce88d6c11714446e06b@178.62.208.109:42786",
+		"enode://f6f0d6b9b7d02ec9e8e4a16e38675f3621ea5e69860c739a65c1597ca28aefb3cec7a6d84e471ac927d42a1b64c1cbdefad75e7ce8872d57548ddcece20afdd1@159.203.64.95:42786"
+	],
+	"accounts": {
+		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
+		"0000000000000000000000000000000000000002": { "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
+		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
+		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
+		"bb94f0ceb32257275b2a7a9c094c13e469b4563e": {
+			"balance": "10000000000000000000000000"
+		},
+		"15656715068ab0dbdf0ab00748a8a19e40f28192": {
+			"balance": "1000000000000000000000000"
+		},
+		"c075fa11f85bda3aaba67106226aaf086ac16f4e": {
+			"balance": "100000000000000000000000"
+		},
+		"93decab0cd745598860f782ac1e8f046cb99e898": {
+			"balance": "10000000000000000000000"
+		}
+	}
+}

ethcore/res/ethereum/frontier.json

@@ -8,11 +8,11 @@
 				"difficultyBoundDivisor": "0x0800",
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
-				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
+				"registrar" : "0x3bb2bb5c6c9c9b7f4ef430b47dc7e026310042ea",
-				"frontierCompatibilityModeLimit": "0x118c30",
+				"homesteadTransition": "0x118c30",
 				"daoHardforkTransition": "0x1d4c00",
 				"daoHardforkBeneficiary": "0xbf4ed7b27f1d666546e30d74d50d173d20bca754",
-				"daoHardforkAccounts": [  
+				"daoHardforkAccounts": [
 					"0xd4fe7bc31cedb7bfb8a345f31e668033056b2728",
 					"0xb3fb0e5aba0e20e5c49d252dfd30e102b171a425",
 					"0x2c19c7f9ae8b751e37aeb2d93a699722395ae18f",
@@ -129,7 +129,8 @@
 					"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
 					"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
 					"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
-				]
+				],
+				"eip150Transition": "0x259518"
 			}
 		}
 	},
@@ -157,10 +158,13 @@
 		"stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
 	},
 	"nodes": [
+		"enode://cd6611461840543d5b9c56fbf088736154c699c43973b3a1a32390cf27106f87e58a818a606ccb05f3866de95a4fe860786fea71bf891ea95f234480d3022aa3@136.243.154.245:30303",
+		"enode://bcc7240543fe2cf86f5e9093d05753dd83343f8fda7bf0e833f65985c73afccf8f981301e13ef49c4804491eab043647374df1c4adf85766af88a624ecc3330e@136.243.154.244:30303",
+		"enode://ed4227681ca8c70beb2277b9e870353a9693f12e7c548c35df6bca6a956934d6f659999c2decb31f75ce217822eefca149ace914f1cbe461ed5a2ebaf9501455@88.212.206.70:30303",
 		"enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303",
 		"enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303",
 		"enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303",
-		"enode://248f12bc8b18d5289358085520ac78cd8076485211e6d96ab0bc93d6cd25442db0ce3a937dc404f64f207b0b9aed50e25e98ce32af5ac7cb321ff285b97de485@zero.parity.io:30303"
+		"enode://4cd540b2c3292e17cff39922e864094bf8b0741fcc8c5dcea14957e389d7944c70278d872902e3d0345927f621547efa659013c400865485ab4bfa0c6596936f@138.201.144.135:30303"
 	],
 	"accounts": {
 		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },

ethcore/res/ethereum/frontier_like_test.json

@@ -9,7 +9,7 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0x118c30",
+				"homesteadTransition": "0x118c30",
 				"daoHardforkTransition": "0x1d4c00",
 				"daoHardforkBeneficiary": "0xbf4ed7b27f1d666546e30d74d50d173d20bca754",
 				"daoHardforkAccounts": [  
@@ -129,7 +129,8 @@
 					"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
 					"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
 					"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
-				]
+				],
+				"eip150Transition": "0x7fffffffffffffff"
 			}
 		}
 	},

ethcore/res/ethereum/frontier_test.json

@@ -9,7 +9,8 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0xffffffffffffffff"
+				"homesteadTransition": "0x7fffffffffffffff",
+				"eip150Transition": "0x7fffffffffffffff"
 			}
 		}
 	},

ethcore/res/ethereum/homestead_test.json

@@ -9,7 +9,8 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0x0"
+				"homesteadTransition": "0x0",
+				"eip150Transition": "0x7fffffffffffffff"
 			}
 		}
 	},

ethcore/res/ethereum/morden.json

@@ -8,8 +8,9 @@
 				"difficultyBoundDivisor": "0x0800",
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
-				"registrar": "0x8e4e9b13d4b45cb0befc93c3061b1408f67316b2",
+				"registrar": "0x52dff57a8a1532e6afb3dc07e2af58bb9eb05b3d",
-				"frontierCompatibilityModeLimit": "0x789b0"
+				"homesteadTransition": "0x789b0",
+				"eip150Transition": "0x1b34d8"
 			}
 		}
 	},
@@ -17,7 +18,9 @@
 		"accountStartNonce": "0x0100000",
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
-		"networkID" : "0x2"
+		"networkID" : "0x2",
+		"forkBlock": "0x1b34d8",
+		"forkCanonHash": "0xf376243aeff1f256d970714c3de9fd78fa4e63cf63e32a51fe1169e375d98145"
 	},
 	"genesis": {
 		"seal": {

ethcore/res/ethereum/olympic.json

@@ -8,7 +8,9 @@
 				"difficultyBoundDivisor": "0x0800",
 				"durationLimit": "0x08",
 				"blockReward": "0x14D1120D7B160000",
-				"registrar": "5e70c0bbcd5636e0f9f9316e9f8633feb64d4050"
+				"registrar": "5e70c0bbcd5636e0f9f9316e9f8633feb64d4050",
+				"homesteadTransition": "0x7fffffffffffffff",
+				"eip150Transition": "0x7fffffffffffffff"
 			}
 		}
 	},

ethcore/res/ethereum/tests

@@ -1 +1 @@
-Subproject commit ac5475d676536cb945f98e9ff98384c01abd0599
+Subproject commit 97066e40ccd061f727deb5cd860e4d9135aa2551

ethcore/res/ethereum/transition_test.json

@@ -1,5 +1,5 @@
 {
-	"name": "DAO hard-fork consensus test",
+	"name": "EIP150.1b hard-fork consensus test",
 	"engine": {
 		"Ethash": {
 			"params": {
@@ -9,7 +9,7 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0x5",
+				"homesteadTransition": "0x5",
 				"daoHardforkTransition": "0x8",
 				"daoHardforkBeneficiary": "0xbf4ed7b27f1d666546e30d74d50d173d20bca754",
 				"daoHardforkAccounts": [  
@@ -129,7 +129,8 @@
 					"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
 					"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
 					"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
-				]
+				],
+				"eip150Transition": "0xa"
 			}
 		}
 	},

ethcore/src/account_db.rs

@@ -96,9 +96,9 @@ impl<'db> HashDB for AccountDB<'db>{
 		unimplemented!()
 	}
 
-	fn get(&self, key: &H256) -> Option<&[u8]> {
+	fn get(&self, key: &H256) -> Option<DBValue> {
 		if key == &SHA3_NULL_RLP {
-			return Some(&NULL_RLP_STATIC);
+			return Some(DBValue::from_slice(&NULL_RLP_STATIC));
 		}
 		self.db.get(&combine_key(&self.address_hash, key))
 	}
@@ -114,13 +114,17 @@ impl<'db> HashDB for AccountDB<'db>{
 		unimplemented!()
 	}
 
-	fn emplace(&mut self, _key: H256, _value: Bytes) {
+	fn emplace(&mut self, _key: H256, _value: DBValue) {
 		unimplemented!()
 	}
 
 	fn remove(&mut self, _key: &H256) {
 		unimplemented!()
 	}
+
+	fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
+		self.db.get_aux(hash)
+	}
 }
 
 /// DB backend wrapper for Account trie
@@ -154,9 +158,9 @@ impl<'db> HashDB for AccountDBMut<'db>{
 		unimplemented!()
 	}
 
-	fn get(&self, key: &H256) -> Option<&[u8]> {
+	fn get(&self, key: &H256) -> Option<DBValue> {
 		if key == &SHA3_NULL_RLP {
-			return Some(&NULL_RLP_STATIC);
+			return Some(DBValue::from_slice(&NULL_RLP_STATIC));
 		}
 		self.db.get(&combine_key(&self.address_hash, key))
 	}
@@ -174,16 +178,16 @@ impl<'db> HashDB for AccountDBMut<'db>{
 		}
 		let k = value.sha3();
 		let ak = combine_key(&self.address_hash, &k);
-		self.db.emplace(ak, value.to_vec());
+		self.db.emplace(ak, DBValue::from_slice(value));
 		k
 	}
 
-	fn emplace(&mut self, key: H256, value: Bytes) {
+	fn emplace(&mut self, key: H256, value: DBValue) {
 		if key == SHA3_NULL_RLP {
 			return;
 		}
 		let key = combine_key(&self.address_hash, &key);
-		self.db.emplace(key, value.to_vec())
+		self.db.emplace(key, value)
 	}
 
 	fn remove(&mut self, key: &H256) {
@@ -193,6 +197,18 @@ impl<'db> HashDB for AccountDBMut<'db>{
 		let key = combine_key(&self.address_hash, key);
 		self.db.remove(&key)
 	}
+
+	fn insert_aux(&mut self, hash: Vec<u8>, value: Vec<u8>) {
+		self.db.insert_aux(hash, value);
+	}
+
+	fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
+		self.db.get_aux(hash)
+	}
+
+	fn remove_aux(&mut self, hash: &[u8]) {
+		self.db.remove_aux(hash);
+	}
 }
 
 struct Wrapping<'db>(&'db HashDB);
@@ -202,9 +218,9 @@ impl<'db> HashDB for Wrapping<'db> {
 		unimplemented!()
 	}
 
-	fn get(&self, key: &H256) -> Option<&[u8]> {
+	fn get(&self, key: &H256) -> Option<DBValue> {
 		if key == &SHA3_NULL_RLP {
-			return Some(&NULL_RLP_STATIC);
+			return Some(DBValue::from_slice(&NULL_RLP_STATIC));
 		}
 		self.0.get(key)
 	}
@@ -220,7 +236,7 @@ impl<'db> HashDB for Wrapping<'db> {
 		unimplemented!()
 	}
 
-	fn emplace(&mut self, _key: H256, _value: Bytes) {
+	fn emplace(&mut self, _key: H256, _value: DBValue) {
 		unimplemented!()
 	}
 
@@ -236,9 +252,9 @@ impl<'db> HashDB for WrappingMut<'db>{
 		unimplemented!()
 	}
 
-	fn get(&self, key: &H256) -> Option<&[u8]> {
+	fn get(&self, key: &H256) -> Option<DBValue> {
 		if key == &SHA3_NULL_RLP {
-			return Some(&NULL_RLP_STATIC);
+			return Some(DBValue::from_slice(&NULL_RLP_STATIC));
 		}
 		self.0.get(key)
 	}
@@ -257,7 +273,7 @@ impl<'db> HashDB for WrappingMut<'db>{
 		self.0.insert(value)
 	}
 
-	fn emplace(&mut self, key: H256, value: Bytes) {
+	fn emplace(&mut self, key: H256, value: DBValue) {
 		if key == SHA3_NULL_RLP {
 			return;
 		}
@@ -270,4 +286,4 @@ impl<'db> HashDB for WrappingMut<'db>{
 		}
 		self.0.remove(key)
 	}
-}
+}

ethcore/src/account_provider.rs

@@ -23,7 +23,7 @@ use std::time::{Instant, Duration};
 use util::{Mutex, RwLock};
 use ethstore::{SecretStore, Error as SSError, SafeAccount, EthStore};
 use ethstore::dir::{KeyDirectory};
-use ethstore::ethkey::{Address, Message, Secret, Random, Generator};
+use ethstore::ethkey::{Address, Message, Public, Secret, Random, Generator};
 use ethjson::misc::AccountMeta;
 pub use ethstore::ethkey::Signature;
 
@@ -176,15 +176,23 @@ impl AccountProvider {
 		AccountProvider {
 			unlocked: Mutex::new(HashMap::new()),
 			address_book: Mutex::new(AddressBook::new(Default::default())),
-			sstore: Box::new(EthStore::open(Box::new(NullDir::default())).unwrap())
+			sstore: Box::new(EthStore::open(Box::new(NullDir::default()))
+				.expect("NullDir load always succeeds; qed"))
 		}
 	}
 
 	/// Creates new random account.
 	pub fn new_account(&self, password: &str) -> Result<Address, Error> {
-		let secret = Random.generate().unwrap().secret().clone();
+		self.new_account_and_public(password).map(|d| d.0)
+	}
+
+	/// Creates new random account and returns address and public key
+	pub fn new_account_and_public(&self, password: &str) -> Result<(Address, Public), Error> {
+		let acc = Random.generate().expect("secp context has generation capabilities; qed");
+		let public = acc.public().clone();
+		let secret = acc.secret().clone();
 		let address = try!(self.sstore.insert_account(secret, password));
-		Ok(address)
+		Ok((address, public))
 	}
 
 	/// Inserts new account into underlying store.
@@ -257,6 +265,20 @@ impl AccountProvider {
 		Ok(())
 	}
 
+	/// Returns `true` if the password for `account` is `password`. `false` if not.
+	pub fn test_password(&self, account: &Address, password: String) -> Result<bool, Error> {
+		match self.sstore.sign(&account, &password, &Default::default()) {
+			Ok(_) => Ok(true),
+			Err(SSError::InvalidPassword) => Ok(false),
+			Err(e) => Err(Error::SStore(e)),
+		}
+	} 
+
+	/// Changes the password of `account` from `password` to `new_password`. Fails if incorrect `password` given.
+	pub fn change_password(&self, account: &Address, password: String, new_password: String) -> Result<(), Error> {
+		self.sstore.change_password(&account, &password, &new_password).map_err(Error::SStore)
+	} 
+
 	/// Helper method used for unlocking accounts.
 	fn unlock_account(&self, account: Address, password: String, unlock: Unlock) -> Result<(), Error> {
 		// verify password by signing dump message
@@ -280,6 +302,21 @@ impl AccountProvider {
 		Ok(())
 	}
 
+	fn password(&self, account: &Address) -> Result<String, Error> {
+		let mut unlocked = self.unlocked.lock();
+		let data = try!(unlocked.get(account).ok_or(Error::NotUnlocked)).clone();
+		if let Unlock::Temp = data.unlock {
+			unlocked.remove(account).expect("data exists: so key must exist: qed");
+		}
+		if let Unlock::Timed((ref start, ref duration)) = data.unlock {
+			if start.elapsed() > Duration::from_millis(*duration as u64) {
+				unlocked.remove(account).expect("data exists: so key must exist: qed");
+				return Err(Error::NotUnlocked);
+			}
+		}
+		Ok(data.password.clone())
+	}
+
 	/// Unlocks account permanently.
 	pub fn unlock_account_permanently(&self, account: Address, password: String) -> Result<(), Error> {
 		self.unlock_account(account, password, Unlock::Perm)
@@ -301,51 +338,16 @@ impl AccountProvider {
 		unlocked.get(&account).is_some()
 	}
 
-	/// Signs the message. Account must be unlocked.
+	/// Signs the message. If password is not provided the account must be unlocked.
-	pub fn sign(&self, account: Address, message: Message) -> Result<Signature, Error> {
+	pub fn sign(&self, account: Address, password: Option<String>, message: Message) -> Result<Signature, Error> {
-		let data = {
+		let password = try!(password.map(Ok).unwrap_or_else(|| self.password(&account)));
-			let mut unlocked = self.unlocked.lock();
+		Ok(try!(self.sstore.sign(&account, &password, &message)))
-			let data = try!(unlocked.get(&account).ok_or(Error::NotUnlocked)).clone();
-			if let Unlock::Temp = data.unlock {
-				unlocked.remove(&account).expect("data exists: so key must exist: qed");
-			}
-			if let Unlock::Timed((ref start, ref duration)) = data.unlock {
-				if start.elapsed() > Duration::from_millis(*duration as u64) {
-					unlocked.remove(&account).expect("data exists: so key must exist: qed");
-					return Err(Error::NotUnlocked);
-				}
-			}
-			data
-		};
-
-		let signature = try!(self.sstore.sign(&account, &data.password, &message));
-		Ok(signature)
 	}
 
-	/// Decrypts a message. Account must be unlocked.
+	/// Decrypts a message. If password is not provided the account must be unlocked.
-	pub fn decrypt(&self, account: Address, shared_mac: &[u8], message: &[u8]) -> Result<Vec<u8>, Error> {
+	pub fn decrypt(&self, account: Address, password: Option<String>, shared_mac: &[u8], message: &[u8]) -> Result<Vec<u8>, Error> {
-		let data = {
+		let password = try!(password.map(Ok).unwrap_or_else(|| self.password(&account)));
-			let mut unlocked = self.unlocked.lock();
+		Ok(try!(self.sstore.decrypt(&account, &password, shared_mac, message)))
-			let data = try!(unlocked.get(&account).ok_or(Error::NotUnlocked)).clone();
-			if let Unlock::Temp = data.unlock {
-				unlocked.remove(&account).expect("data exists: so key must exist: qed");
-			}
-			if let Unlock::Timed((ref start, ref duration)) = data.unlock {
-				if start.elapsed() > Duration::from_millis(*duration as u64) {
-					unlocked.remove(&account).expect("data exists: so key must exist: qed");
-					return Err(Error::NotUnlocked);
-				}
-			}
-			data
-		};
-
-		Ok(try!(self.sstore.decrypt(&account, &data.password, shared_mac, message)))
-	}
-
-	/// Unlocks an account, signs the message, and locks it again.
-	pub fn sign_with_password(&self, account: Address, password: String, message: Message) -> Result<Signature, Error> {
-		let signature = try!(self.sstore.sign(&account, &password, &message));
-		Ok(signature)
 	}
 
 	/// Returns the underlying `SecretStore` reference if one exists.
@@ -386,8 +388,8 @@ mod tests {
 		assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
 		assert!(ap.unlock_account_temporarily(kp.address(), "test1".into()).is_err());
 		assert!(ap.unlock_account_temporarily(kp.address(), "test".into()).is_ok());
-		assert!(ap.sign(kp.address(), Default::default()).is_ok());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
-		assert!(ap.sign(kp.address(), Default::default()).is_err());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_err());
 	}
 
 	#[test]
@@ -397,11 +399,11 @@ mod tests {
 		assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
 		assert!(ap.unlock_account_permanently(kp.address(), "test1".into()).is_err());
 		assert!(ap.unlock_account_permanently(kp.address(), "test".into()).is_ok());
-		assert!(ap.sign(kp.address(), Default::default()).is_ok());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
-		assert!(ap.sign(kp.address(), Default::default()).is_ok());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
 		assert!(ap.unlock_account_temporarily(kp.address(), "test".into()).is_ok());
-		assert!(ap.sign(kp.address(), Default::default()).is_ok());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
-		assert!(ap.sign(kp.address(), Default::default()).is_ok());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
 	}
 
 	#[test]
@@ -411,8 +413,8 @@ mod tests {
 		assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
 		assert!(ap.unlock_account_timed(kp.address(), "test1".into(), 2000).is_err());
 		assert!(ap.unlock_account_timed(kp.address(), "test".into(), 2000).is_ok());
-		assert!(ap.sign(kp.address(), Default::default()).is_ok());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
 		::std::thread::sleep(Duration::from_millis(2000));
-		assert!(ap.sign(kp.address(), Default::default()).is_err());
+		assert!(ap.sign(kp.address(), None, Default::default()).is_err());
 	}
 }

ethcore/src/action_params.rs

@@ -15,10 +15,14 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Evm input params.
-use common::*;
+use util::{Address, Bytes, Uint, U256};
+use util::hash::{H256, FixedHash};
+use util::sha3::{Hashable, SHA3_EMPTY};
 use ethjson;
 use types::executed::CallType;
 
+use std::sync::Arc;
+
 /// Transaction value
 #[derive(Clone, Debug)]
 pub enum ActionValue {
@@ -43,6 +47,8 @@ impl ActionValue {
 pub struct ActionParams {
 	/// Address of currently executed code.
 	pub code_address: Address,
+	/// Hash of currently executed code.
+	pub code_hash: H256,
 	/// Receive address. Usually equal to code_address,
 	/// except when called using CALLCODE.
 	pub address: Address,
@@ -57,7 +63,7 @@ pub struct ActionParams {
 	/// Transaction value.
 	pub value: ActionValue,
 	/// Code being executed.
-	pub code: Option<Bytes>,
+	pub code: Option<Arc<Bytes>>,
 	/// Input data.
 	pub data: Option<Bytes>,
 	/// Type of call
@@ -70,6 +76,7 @@ impl Default for ActionParams {
 	fn default() -> ActionParams {
 		ActionParams {
 			code_address: Address::new(),
+			code_hash: SHA3_EMPTY,
 			address: Address::new(),
 			sender: Address::new(),
 			origin: Address::new(),
@@ -88,10 +95,11 @@ impl From<ethjson::vm::Transaction> for ActionParams {
 		let address: Address = t.address.into();
 		ActionParams {
 			code_address: Address::new(),
+			code_hash: (&*t.code).sha3(),
 			address: address,
 			sender: t.sender.into(),
 			origin: t.origin.into(),
-			code: Some(t.code.into()),
+			code: Some(Arc::new(t.code.into())),
 			data: Some(t.data.into()),
 			gas: t.gas.into(),
 			gas_price: t.gas_price.into(),

ethcore/src/basic_types.rs

@@ -16,7 +16,7 @@
 
 //! Ethcore basic typenames.
 
-use util::*;
+use util::hash::H2048;
 
 /// Type for a 2048-bit log-bloom, as used by our blocks.
 pub type LogBloom = H2048;

ethcore/src/block.rs

@@ -16,13 +16,26 @@
 
 //! Blockchain block.
 
-use common::*;
+use std::sync::Arc;
+use std::collections::HashSet;
+
+use rlp::{UntrustedRlp, RlpStream, Encodable, Decodable, Decoder, DecoderError, View, Stream};
+use util::{Bytes, Address, Uint, FixedHash, Hashable, U256, H256, ordered_trie_root, SHA3_NULL_RLP};
+use util::error::{Mismatch, OutOfBounds};
+
+use basic_types::{LogBloom, Seal};
+use env_info::{EnvInfo, LastHashes};
 use engines::Engine;
-use state::*;
+use error::{Error, BlockError, TransactionError};
-use verification::PreverifiedBlock;
-use trace::FlatTrace;
 use factory::Factories;
-use rlp::*;
+use header::Header;
+use receipt::Receipt;
+use state::State;
+use state_db::StateDB;
+use trace::FlatTrace;
+use transaction::SignedTransaction;
+use verification::PreverifiedBlock;
+use views::BlockView;
 
 /// A block, encoded as it is on the block chain.
 #[derive(Default, Debug, Clone, PartialEq)]
@@ -69,7 +82,7 @@ impl Decodable for Block {
 	}
 }
 
-/// Internal type for a block's common elements.
+/// An internal type for a block's common elements.
 #[derive(Clone)]
 pub struct ExecutedBlock {
 	base: Block,
@@ -179,7 +192,7 @@ pub trait IsBlock {
 /// Trait for a object that has a state database.
 pub trait Drain {
 	/// Drop this object and return the underlieing database.
-	fn drain(self) -> Box<JournalDB>;
+	fn drain(self) -> StateDB;
 }
 
 impl IsBlock for ExecutedBlock {
@@ -205,6 +218,7 @@ pub struct ClosedBlock {
 	block: ExecutedBlock,
 	uncle_bytes: Bytes,
 	last_hashes: Arc<LastHashes>,
+	unclosed_state: State,
 }
 
 /// Just like `ClosedBlock` except that we can't reopen it and it's faster.
@@ -231,7 +245,7 @@ impl<'x> OpenBlock<'x> {
 		engine: &'x Engine,
 		factories: Factories,
 		tracing: bool,
-		db: Box<JournalDB>,
+		db: StateDB,
 		parent: &Header,
 		last_hashes: Arc<LastHashes>,
 		author: Address,
@@ -336,7 +350,7 @@ impl<'x> OpenBlock<'x> {
 				let t = outcome.trace;
 				self.block.traces.as_mut().map(|traces| traces.push(t));
 				self.block.receipts.push(outcome.receipt);
-				Ok(self.block.receipts.last().unwrap())
+				Ok(self.block.receipts.last().expect("receipt just pushed; qed"))
 			}
 			Err(x) => Err(From::from(x))
 		}
@@ -346,8 +360,7 @@ impl<'x> OpenBlock<'x> {
 	pub fn close(self) -> ClosedBlock {
 		let mut s = self;
 
-		// take a snapshot so the engine's changes can be rolled back.
+		let unclosed_state = s.block.state.clone();
-		s.block.state.snapshot();
 
 		s.engine.on_close_block(&mut s.block);
 		s.block.base.header.set_transactions_root(ordered_trie_root(s.block.base.transactions.iter().map(|e| e.rlp_bytes().to_vec())));
@@ -362,6 +375,7 @@ impl<'x> OpenBlock<'x> {
 			block: s.block,
 			uncle_bytes: uncle_bytes,
 			last_hashes: s.last_hashes,
+			unclosed_state: unclosed_state,
 		}
 	}
 
@@ -369,9 +383,6 @@ impl<'x> OpenBlock<'x> {
 	pub fn close_and_lock(self) -> LockedBlock {
 		let mut s = self;
 
-		// take a snapshot so the engine's changes can be rolled back.
-		s.block.state.snapshot();
-
 		s.engine.on_close_block(&mut s.block);
 		if s.block.base.header.transactions_root().is_zero() || s.block.base.header.transactions_root() == &SHA3_NULL_RLP {
 			s.block.base.header.set_transactions_root(ordered_trie_root(s.block.base.transactions.iter().map(|e| e.rlp_bytes().to_vec())));
@@ -388,12 +399,15 @@ impl<'x> OpenBlock<'x> {
 		s.block.base.header.set_log_bloom(s.block.receipts.iter().fold(LogBloom::zero(), |mut b, r| {b = &b | &r.log_bloom; b})); //TODO: use |= operator
 		s.block.base.header.set_gas_used(s.block.receipts.last().map_or(U256::zero(), |r| r.gas_used));
 
-		ClosedBlock {
+		LockedBlock {
 			block: s.block,
 			uncle_bytes: uncle_bytes,
-			last_hashes: s.last_hashes,
+		}
-		}.lock()
 	}
+
+	#[cfg(test)]
+	/// Return mutable block reference. To be used in tests only.
+	pub fn block_mut (&mut self) -> &mut ExecutedBlock { &mut self.block }
 }
 
 impl<'x> IsBlock for OpenBlock<'x> {
@@ -413,17 +427,7 @@ impl ClosedBlock {
 	pub fn hash(&self) -> H256 { self.header().rlp_sha3(Seal::Without) }
 
 	/// Turn this into a `LockedBlock`, unable to be reopened again.
-	pub fn lock(mut self) -> LockedBlock {
+	pub fn lock(self) -> LockedBlock {
-		// finalize the changes made by the engine.
-		self.block.state.clear_snapshot();
-		if let Err(e) = self.block.state.commit() {
-			warn!("Error committing closed block's state: {:?}", e);
-		}
-
-		// set the state root here, after commit recalculates with the block
-		// rewards.
-		self.block.base.header.set_state_root(self.block.state.root().clone());
-
 		LockedBlock {
 			block: self.block,
 			uncle_bytes: self.uncle_bytes,
@@ -431,12 +435,12 @@ impl ClosedBlock {
 	}
 
 	/// Given an engine reference, reopen the `ClosedBlock` into an `OpenBlock`.
-	pub fn reopen(mut self, engine: &Engine) -> OpenBlock {
+	pub fn reopen(self, engine: &Engine) -> OpenBlock {
 		// revert rewards (i.e. set state back at last transaction's state).
-		self.block.state.revert_snapshot();
+		let mut block = self.block;
-
+		block.state = self.unclosed_state;
 		OpenBlock {
-			block: self.block,
+			block: block,
 			engine: engine,
 			last_hashes: self.last_hashes,
 		}
@@ -462,11 +466,11 @@ impl LockedBlock {
 	/// Provide a valid seal in order to turn this into a `SealedBlock`.
 	/// This does check the validity of `seal` with the engine.
 	/// Returns the `ClosedBlock` back again if the seal is no good.
-	pub fn try_seal(self, engine: &Engine, seal: Vec<Bytes>) -> Result<SealedBlock, LockedBlock> {
+	pub fn try_seal(self, engine: &Engine, seal: Vec<Bytes>) -> Result<SealedBlock, (Error, LockedBlock)> {
 		let mut s = self;
 		s.block.base.header.set_seal(seal);
 		match engine.verify_block_seal(&s.block.base.header) {
-			Err(_) => Err(s),
+			Err(e) => Err((e, s)),
 			_ => Ok(SealedBlock { block: s.block, uncle_bytes: s.uncle_bytes }),
 		}
 	}
@@ -474,7 +478,9 @@ impl LockedBlock {
 
 impl Drain for LockedBlock {
 	/// Drop this object and return the underlieing database.
-	fn drain(self) -> Box<JournalDB> { self.block.state.drop().1 }
+	fn drain(self) -> StateDB {
+		self.block.state.drop().1
+	}
 }
 
 impl SealedBlock {
@@ -490,7 +496,9 @@ impl SealedBlock {
 
 impl Drain for SealedBlock {
 	/// Drop this object and return the underlieing database.
-	fn drain(self) -> Box<JournalDB> { self.block.state.drop().1 }
+	fn drain(self) -> StateDB {
+		self.block.state.drop().1
+	}
 }
 
 impl IsBlock for SealedBlock {
@@ -505,7 +513,7 @@ pub fn enact(
 	uncles: &[Header],
 	engine: &Engine,
 	tracing: bool,
-	db: Box<JournalDB>,
+	db: StateDB,
 	parent: &Header,
 	last_hashes: Arc<LastHashes>,
 	factories: Factories,
@@ -526,25 +534,38 @@ pub fn enact(
 	b.set_uncles_hash(header.uncles_hash().clone());
 	b.set_transactions_root(header.transactions_root().clone());
 	b.set_receipts_root(header.receipts_root().clone());
-	for t in transactions { try!(b.push_transaction(t.clone(), None)); }
+
-	for u in uncles { try!(b.push_uncle(u.clone())); }
+	try!(push_transactions(&mut b, transactions));
+	for u in uncles {
+		try!(b.push_uncle(u.clone()));
+	}
 	Ok(b.close_and_lock())
 }
 
-/// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header
+#[inline(always)]
-#[cfg_attr(feature="dev", allow(too_many_arguments))]
+#[cfg(not(feature = "slow-blocks"))]
-pub fn enact_bytes(
+fn push_transactions(block: &mut OpenBlock, transactions: &[SignedTransaction]) -> Result<(), Error> {
-	block_bytes: &[u8],
+	for t in transactions {
-	engine: &Engine,
+		try!(block.push_transaction(t.clone(), None));
-	tracing: bool,
+	}
-	db: Box<JournalDB>,
+	Ok(())
-	parent: &Header,
+}
-	last_hashes: Arc<LastHashes>,
+
-	factories: Factories,
+#[cfg(feature = "slow-blocks")]
-) -> Result<LockedBlock, Error> {
+fn push_transactions(block: &mut OpenBlock, transactions: &[SignedTransaction]) -> Result<(), Error> {
-	let block = BlockView::new(block_bytes);
+	use std::time;
-	let header = block.header();
+
-	enact(&header, &block.transactions(), &block.uncles(), engine, tracing, db, parent, last_hashes, factories)
+	let slow_tx = option_env!("SLOW_TX_DURATION").and_then(|v| v.parse().ok()).unwrap_or(100);
+	for t in transactions {
+		let hash = t.hash();
+		let start = time::Instant::now();
+		try!(block.push_transaction(t.clone(), None));
+		let took = start.elapsed();
+		if took > time::Duration::from_millis(slow_tx) {
+			warn!("Heavy transaction in block {:?}: {:?}", block.header().number(), hash);
+		}
+	}
+	Ok(())
 }
 
 /// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header
@@ -553,7 +574,7 @@ pub fn enact_verified(
 	block: &PreverifiedBlock,
 	engine: &Engine,
 	tracing: bool,
-	db: Box<JournalDB>,
+	db: StateDB,
 	parent: &Header,
 	last_hashes: Arc<LastHashes>,
 	factories: Factories,
@@ -562,35 +583,61 @@ pub fn enact_verified(
 	enact(&block.header, &block.transactions, &view.uncles(), engine, tracing, db, parent, last_hashes, factories)
 }
 
-/// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header. Seal the block aferwards
-#[cfg_attr(feature="dev", allow(too_many_arguments))]
-pub fn enact_and_seal(
-	block_bytes: &[u8],
-	engine: &Engine,
-	tracing: bool,
-	db: Box<JournalDB>,
-	parent: &Header,
-	last_hashes: Arc<LastHashes>,
-	factories: Factories,
-) -> Result<SealedBlock, Error> {
-	let header = BlockView::new(block_bytes).header_view();
-	Ok(try!(try!(enact_bytes(block_bytes, engine, tracing, db, parent, last_hashes, factories)).seal(engine, header.seal())))
-}
-
 #[cfg(test)]
 mod tests {
 	use tests::helpers::*;
 	use super::*;
-	use common::*;
+	use engines::Engine;
+	use env_info::LastHashes;
+	use error::Error;
+	use header::Header;
+	use factory::Factories;
+	use state_db::StateDB;
+	use views::BlockView;
+	use util::Address;
+	use util::hash::FixedHash;
+
+	use std::sync::Arc;
+
+	/// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header
+	#[cfg_attr(feature="dev", allow(too_many_arguments))]
+	fn enact_bytes(
+		block_bytes: &[u8],
+		engine: &Engine,
+		tracing: bool,
+		db: StateDB,
+		parent: &Header,
+		last_hashes: Arc<LastHashes>,
+		factories: Factories,
+	) -> Result<LockedBlock, Error> {
+		let block = BlockView::new(block_bytes);
+		let header = block.header();
+		enact(&header, &block.transactions(), &block.uncles(), engine, tracing, db, parent, last_hashes, factories)
+	}
+
+	/// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header. Seal the block aferwards
+	#[cfg_attr(feature="dev", allow(too_many_arguments))]
+	fn enact_and_seal(
+		block_bytes: &[u8],
+		engine: &Engine,
+		tracing: bool,
+		db: StateDB,
+		parent: &Header,
+		last_hashes: Arc<LastHashes>,
+		factories: Factories,
+	) -> Result<SealedBlock, Error> {
+		let header = BlockView::new(block_bytes).header_view();
+		Ok(try!(try!(enact_bytes(block_bytes, engine, tracing, db, parent, last_hashes, factories)).seal(engine, header.seal())))
+	}
 
 	#[test]
 	fn open_block() {
 		use spec::*;
 		let spec = Spec::new_test();
 		let genesis_header = spec.genesis_header();
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(&*spec.engine, Default::default(), false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close_and_lock();
@@ -604,25 +651,25 @@ mod tests {
 		let engine = &*spec.engine;
 		let genesis_header = spec.genesis_header();
 
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes.clone(), Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap()
 			.close_and_lock().seal(engine, vec![]).unwrap();
 		let orig_bytes = b.rlp_bytes();
 		let orig_db = b.drain();
 
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let e = enact_and_seal(&orig_bytes, engine, false, db, &genesis_header, last_hashes, Default::default()).unwrap();
 
 		assert_eq!(e.rlp_bytes(), orig_bytes);
 
 		let db = e.drain();
-		assert_eq!(orig_db.keys(), db.keys());
+		assert_eq!(orig_db.journal_db().keys(), db.journal_db().keys());
-		assert!(orig_db.keys().iter().filter(|k| orig_db.get(k.0) != db.get(k.0)).next() == None);
+		assert!(orig_db.journal_db().keys().iter().filter(|k| orig_db.journal_db().get(k.0) != db.journal_db().get(k.0)).next() == None);
 	}
 
 	#[test]
@@ -632,9 +679,9 @@ mod tests {
 		let engine = &*spec.engine;
 		let genesis_header = spec.genesis_header();
 
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let mut open_block = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes.clone(), Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let mut uncle1_header = Header::new();
@@ -648,9 +695,9 @@ mod tests {
 		let orig_bytes = b.rlp_bytes();
 		let orig_db = b.drain();
 
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let e = enact_and_seal(&orig_bytes, engine, false, db, &genesis_header, last_hashes, Default::default()).unwrap();
 
 		let bytes = e.rlp_bytes();
@@ -659,7 +706,7 @@ mod tests {
 		assert_eq!(uncles[1].extra_data(), b"uncle2");
 
 		let db = e.drain();
-		assert_eq!(orig_db.keys(), db.keys());
+		assert_eq!(orig_db.journal_db().keys(), db.journal_db().keys());
-		assert!(orig_db.keys().iter().filter(|k| orig_db.get(k.0) != db.get(k.0)).next() == None);
+		assert!(orig_db.journal_db().keys().iter().filter(|k| orig_db.journal_db().get(k.0) != db.journal_db().get(k.0)).next() == None);
 	}
 }

ethcore/src/blockchain/best_block.rs

@@ -29,3 +29,12 @@ pub struct BestBlock {
 	/// Best block uncompressed bytes
 	pub block: Bytes,
 }
+
+/// Best ancient block info. If the blockchain has a gap this keeps track of where it starts.
+#[derive(Default)]
+pub struct BestAncientBlock {
+	/// Best block hash.
+	pub hash: H256,
+	/// Best block number.
+	pub number: BlockNumber,
+}

ethcore/src/blockchain/blockchain.rs

@@ -27,7 +27,8 @@ use log_entry::{LogEntry, LocalizedLogEntry};
 use receipt::Receipt;
 use blooms::{Bloom, BloomGroup};
 use blockchain::block_info::{BlockInfo, BlockLocation, BranchBecomingCanonChainData};
-use blockchain::best_block::BestBlock;
+use blockchain::best_block::{BestBlock, BestAncientBlock};
+use types::blockchain_info::BlockChainInfo;
 use types::tree_route::TreeRoute;
 use blockchain::update::ExtrasUpdate;
 use blockchain::{CacheSize, ImportRoute, Config};
@@ -43,16 +44,24 @@ pub trait BlockProvider {
 	/// (though not necessarily a part of the canon chain).
 	fn is_known(&self, hash: &H256) -> bool;
 
-	/// Get the first block which this chain holds.
+	/// Get the first block of the best part of the chain.
+	/// Return `None` if there is no gap and the first block is the genesis.
 	/// Any queries of blocks which precede this one are not guaranteed to
 	/// succeed.
-	fn first_block(&self) -> H256;
+	fn first_block(&self) -> Option<H256>;
 
 	/// Get the number of the first block.
-	fn first_block_number(&self) -> BlockNumber {
+	fn first_block_number(&self) -> Option<BlockNumber> {
-		self.block_number(&self.first_block()).expect("First block always stored; qed")
+		self.first_block().map(|b| self.block_number(&b).expect("First block is always set to an existing block or `None`. Existing block always has a number; qed"))
 	}
 
+	/// Get the best block of an first block sequence if there is a gap.
+	fn best_ancient_block(&self) -> Option<H256>;
+
+	/// Get the number of the first block.
+	fn best_ancient_number(&self) -> Option<BlockNumber> {
+		self.best_ancient_block().map(|h| self.block_number(&h).expect("Ancient block is always set to an existing block or `None`. Existing block always has a number; qed"))
+	}
 	/// Get raw block data
 	fn block(&self, hash: &H256) -> Option<Bytes>;
 
@@ -123,7 +132,8 @@ pub trait BlockProvider {
 
 	/// Returns the header of the genesis block.
 	fn genesis_header(&self) -> Header {
-		self.block_header(&self.genesis_hash()).unwrap()
+		self.block_header(&self.genesis_hash())
+			.expect("Genesis header always stored; qed")
 	}
 
 	/// Returns numbers of blocks containing given bloom.
@@ -160,9 +170,14 @@ impl bc::group::BloomGroupDatabase for BlockChain {
 pub struct BlockChain {
 	// All locks must be captured in the order declared here.
 	blooms_config: bc::Config,
-	first_block: H256,
 
 	best_block: RwLock<BestBlock>,
+	// Stores best block of the first uninterrupted sequence of blocks. `None` if there are no gaps.
+	// Only updated with `insert_unordered_block`.
+	best_ancient_block: RwLock<Option<BestAncientBlock>>,
+	// Stores the last block of the last sequence of blocks. `None` if there are no gaps.
+	// This is calculated on start and does not get updated.
+	first_block: Option<H256>,
 
 	// block cache
 	block_headers: RwLock<HashMap<H256, Bytes>>,
@@ -181,7 +196,7 @@ pub struct BlockChain {
 
 	pending_best_block: RwLock<Option<BestBlock>>,
 	pending_block_hashes: RwLock<HashMap<BlockNumber, H256>>,
-	pending_transaction_addresses: RwLock<HashMap<H256, TransactionAddress>>,
+	pending_transaction_addresses: RwLock<HashMap<H256, Option<TransactionAddress>>>,
 }
 
 impl BlockProvider for BlockChain {
@@ -191,8 +206,16 @@ impl BlockProvider for BlockChain {
 		self.db.exists_with_cache(db::COL_EXTRA, &self.block_details, hash)
 	}
 
-	fn first_block(&self) -> H256 {
+	fn first_block(&self) -> Option<H256> {
-		self.first_block
+		self.first_block.clone()
+	}
+
+	fn best_ancient_block(&self) -> Option<H256> {
+		self.best_ancient_block.read().as_ref().map(|b| b.hash.clone())
+	}
+
+	fn best_ancient_number(&self) -> Option<BlockNumber> {
+		self.best_ancient_block.read().as_ref().map(|b| b.number)
 	}
 
 	/// Get raw block data
@@ -331,11 +354,15 @@ impl BlockProvider for BlockChain {
 			.filter_map(|number| self.block_hash(number).map(|hash| (number, hash)))
 			.filter_map(|(number, hash)| self.block_receipts(&hash).map(|r| (number, hash, r.receipts)))
 			.filter_map(|(number, hash, receipts)| self.block_body(&hash).map(|ref b| (number, hash, receipts, BodyView::new(b).transaction_hashes())))
-			.flat_map(|(number, hash, mut receipts, hashes)| {
+			.flat_map(|(number, hash, mut receipts, mut hashes)| {
-				assert_eq!(receipts.len(), hashes.len());
+				if receipts.len() != hashes.len() {
+					warn!("Block {} ({}) has different number of receipts ({}) to transactions ({}). Database corrupt?", number, hash, receipts.len(), hashes.len());
+					assert!(false);
+				}
 				log_index = receipts.iter().fold(0, |sum, receipt| sum + receipt.logs.len());
 
 				let receipts_len = receipts.len();
+				hashes.reverse();
 				receipts.reverse();
 				receipts.into_iter()
 					.map(|receipt| receipt.logs)
@@ -367,6 +394,8 @@ impl BlockProvider for BlockChain {
 	}
 }
 
+/// An iterator which walks the blockchain towards the genesis.
+#[derive(Clone)]
 pub struct AncestryIter<'a> {
 	current: H256,
 	chain: &'a BlockChain,
@@ -376,11 +405,10 @@ impl<'a> Iterator for AncestryIter<'a> {
 	type Item = H256;
 	fn next(&mut self) -> Option<H256> {
 		if self.current.is_zero() {
-			Option::None
+			None
 		} else {
-			let mut n = self.chain.block_details(&self.current).unwrap().parent;
+			self.chain.block_details(&self.current)
-			mem::swap(&mut self.current, &mut n);
+				.map(|details| mem::replace(&mut self.current, details.parent))
-			Some(n)
 		}
 	}
 }
@@ -396,8 +424,9 @@ impl BlockChain {
 				levels: LOG_BLOOMS_LEVELS,
 				elements_per_index: LOG_BLOOMS_ELEMENTS_PER_INDEX,
 			},
-			first_block: H256::zero(),
+			first_block: None,
 			best_block: RwLock::new(BestBlock::default()),
+			best_ancient_block: RwLock::new(None),
 			block_headers: RwLock::new(HashMap::new()),
 			block_bodies: RwLock::new(HashMap::new()),
 			block_details: RwLock::new(HashMap::new()),
@@ -439,7 +468,6 @@ impl BlockChain {
 				batch.write(db::COL_EXTRA, &header.number(), &hash);
 
 				batch.put(db::COL_EXTRA, b"best", &hash);
-				batch.put(db::COL_EXTRA, b"first", &hash);
 				bc.db.write(batch).expect("Low level database error. Some issue with disk?");
 				hash
 			}
@@ -451,32 +479,45 @@ impl BlockChain {
 			let best_block_total_difficulty = bc.block_details(&best_block_hash).unwrap().total_difficulty;
 			let best_block_rlp = bc.block(&best_block_hash).unwrap();
 
-			let raw_first = bc.db.get(db::COL_EXTRA, b"first").unwrap().map_or(Vec::new(), |v| v.to_vec());
+			let raw_first = bc.db.get(db::COL_EXTRA, b"first").unwrap().map(|v| v.to_vec());
+			let mut best_ancient = bc.db.get(db::COL_EXTRA, b"ancient").unwrap().map(|h| H256::from_slice(&h));
+			let best_ancient_number;
+			if best_ancient.is_none() && best_block_number > 1 && bc.block_hash(1).is_none() {
+				best_ancient = Some(bc.genesis_hash());
+				best_ancient_number = Some(0);
+			} else {
+				best_ancient_number = best_ancient.as_ref().and_then(|h| bc.block_number(h));
+			}
 
 			// binary search for the first block.
-			if raw_first.is_empty() {
+			match raw_first {
-				let (mut f, mut hash) = (best_block_number, best_block_hash);
+				None => {
-				let mut l = 0;
+					let (mut f, mut hash) = (best_block_number, best_block_hash);
+					let mut l = best_ancient_number.unwrap_or(0);
 
-				loop {
+					loop {
-					if l >= f { break; }
+						if l >= f { break; }
 
-					let step = (f - l) >> 1;
+						let step = (f - l) >> 1;
-					let m = l + step;
+						let m = l + step;
 
-					match bc.block_hash(m) {
+						match bc.block_hash(m) {
-						Some(h) => { f = m; hash = h },
+							Some(h) => { f = m; hash = h },
-						None => { l = m + 1 },
+							None => { l = m + 1 },
+						}
 					}
-				}
 
-				let mut batch = db.transaction();
+					if hash != bc.genesis_hash() {
-				batch.put(db::COL_EXTRA, b"first", &hash);
+						trace!("First block calculated: {:?}", hash);
-				db.write(batch).expect("Low level database error.");
+						let mut batch = db.transaction();
-
+						batch.put(db::COL_EXTRA, b"first", &hash);
-				bc.first_block = hash;
+						db.write(batch).expect("Low level database error.");
-			} else {
+						bc.first_block = Some(hash);
-				bc.first_block = H256::from_slice(&raw_first);
+					}
+				},
+				Some(raw_first) => {
+					bc.first_block = Some(H256::from_slice(&raw_first));
+				},
 			}
 
 			// and write them
@@ -487,6 +528,14 @@ impl BlockChain {
 				hash: best_block_hash,
 				block: best_block_rlp,
 			};
+
+			if let (Some(hash), Some(number)) = (best_ancient, best_ancient_number) {
+				let mut best_ancient_block = bc.best_ancient_block.write();
+				*best_ancient_block = Some(BestAncientBlock {
+					hash: hash,
+					number: number,
+				});
+			}
 		}
 
 		bc
@@ -640,11 +689,12 @@ impl BlockChain {
 	/// Inserts a verified, known block from the canonical chain.
 	///
 	/// Can be performed out-of-order, but care must be taken that the final chain is in a correct state.
-	/// This is used by snapshot restoration.
+	/// This is used by snapshot restoration and when downloading missing blocks for the chain gap.
-	///
+	/// `is_best` forces the best block to be updated to this block.
+	/// `is_ancient` forces the best block of the first block sequence to be updated to this block.
 	/// Supply a dummy parent total difficulty when the parent block may not be in the chain.
 	/// Returns true if the block is disconnected.
-	pub fn insert_snapshot_block(&self, bytes: &[u8], receipts: Vec<Receipt>, parent_td: Option<U256>, is_best: bool) -> bool {
+	pub fn insert_unordered_block(&self, batch: &mut DBTransaction, bytes: &[u8], receipts: Vec<Receipt>, parent_td: Option<U256>, is_best: bool, is_ancient: bool) -> bool {
 		let block = BlockView::new(bytes);
 		let header = block.header_view();
 		let hash = header.sha3();
@@ -655,8 +705,6 @@ impl BlockChain {
 
 		assert!(self.pending_best_block.read().is_none());
 
-		let mut batch = self.db.transaction();
-
 		let block_rlp = UntrustedRlp::new(bytes);
 		let compressed_header = block_rlp.at(0).unwrap().compress(RlpType::Blocks);
 		let compressed_body = UntrustedRlp::new(&Self::block_to_body(bytes)).compress(RlpType::Blocks);
@@ -670,22 +718,36 @@ impl BlockChain {
 		if let Some(parent_details) = maybe_parent {
 			// parent known to be in chain.
 			let info = BlockInfo {
-				hash: hash,
+				hash: hash.clone(),
 				number: header.number(),
 				total_difficulty: parent_details.total_difficulty + header.difficulty(),
 				location: BlockLocation::CanonChain,
 			};
 
-			self.prepare_update(&mut batch, ExtrasUpdate {
+			self.prepare_update(batch, ExtrasUpdate {
 				block_hashes: self.prepare_block_hashes_update(bytes, &info),
 				block_details: self.prepare_block_details_update(bytes, &info),
 				block_receipts: self.prepare_block_receipts_update(receipts, &info),
-				transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
 				blocks_blooms: self.prepare_block_blooms_update(bytes, &info),
+				transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
 				info: info,
 				block: bytes
 			}, is_best);
-			self.db.write(batch).unwrap();
+
+			if is_ancient {
+				let mut best_ancient_block = self.best_ancient_block.write();
+				let ancient_number = best_ancient_block.as_ref().map_or(0, |b| b.number);
+				if self.block_hash(header.number() + 1).is_some() {
+					batch.delete(db::COL_EXTRA, b"ancient");
+					*best_ancient_block = None;
+				} else if header.number() > ancient_number {
+					batch.put(db::COL_EXTRA, b"ancient", &hash);
+					*best_ancient_block = Some(BestAncientBlock {
+						hash: hash,
+						number: header.number(),
+					});
+				}
+			}
 
 			false
 		} else {
@@ -710,17 +772,15 @@ impl BlockChain {
 			let mut update = HashMap::new();
 			update.insert(hash, block_details);
 
-			self.prepare_update(&mut batch, ExtrasUpdate {
+			self.prepare_update(batch, ExtrasUpdate {
 				block_hashes: self.prepare_block_hashes_update(bytes, &info),
 				block_details: update,
 				block_receipts: self.prepare_block_receipts_update(receipts, &info),
-				transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
 				blocks_blooms: self.prepare_block_blooms_update(bytes, &info),
+				transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
 				info: info,
 				block: bytes,
 			}, is_best);
-			self.db.write(batch).unwrap();
-
 			true
 		}
 	}
@@ -783,8 +843,8 @@ impl BlockChain {
 			block_hashes: self.prepare_block_hashes_update(bytes, &info),
 			block_details: self.prepare_block_details_update(bytes, &info),
 			block_receipts: self.prepare_block_receipts_update(receipts, &info),
-			transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
 			blocks_blooms: self.prepare_block_blooms_update(bytes, &info),
+			transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
 			info: info.clone(),
 			block: bytes,
 		}, true);
@@ -877,7 +937,7 @@ impl BlockChain {
 			let mut write_txs = self.pending_transaction_addresses.write();
 
 			batch.extend_with_cache(db::COL_EXTRA, &mut *write_hashes, update.block_hashes, CacheUpdatePolicy::Overwrite);
-			batch.extend_with_cache(db::COL_EXTRA, &mut *write_txs, update.transactions_addresses, CacheUpdatePolicy::Overwrite);
+			batch.extend_with_option_cache(db::COL_EXTRA, &mut *write_txs, update.transactions_addresses, CacheUpdatePolicy::Overwrite);
 		}
 	}
 
@@ -895,18 +955,25 @@ impl BlockChain {
 			*best_block = block;
 		}
 
+		let pending_txs = mem::replace(&mut *pending_write_txs, HashMap::new());
+		let (retracted_txs, enacted_txs) = pending_txs.into_iter().partition::<HashMap<_, _>, _>(|&(_, ref value)| value.is_none());
+
 		let pending_hashes_keys: Vec<_> = pending_write_hashes.keys().cloned().collect();
-		let pending_txs_keys: Vec<_> = pending_write_txs.keys().cloned().collect();
+		let enacted_txs_keys: Vec<_> = enacted_txs.keys().cloned().collect();
 
 		write_hashes.extend(mem::replace(&mut *pending_write_hashes, HashMap::new()));
-		write_txs.extend(mem::replace(&mut *pending_write_txs, HashMap::new()));
+		write_txs.extend(enacted_txs.into_iter().map(|(k, v)| (k, v.expect("Transactions were partitioned; qed"))));
+
+		for hash in retracted_txs.keys() {
+			write_txs.remove(hash);
+		}
 
 		let mut cache_man = self.cache_man.lock();
 		for n in pending_hashes_keys {
 			cache_man.note_used(CacheID::BlockHashes(n));
 		}
 
-		for hash in pending_txs_keys {
+		for hash in enacted_txs_keys {
 			cache_man.note_used(CacheID::TransactionAddresses(hash));
 		}
 	}
@@ -933,17 +1000,29 @@ impl BlockChain {
 		if !self.is_known(parent) { return None; }
 
 		let mut excluded = HashSet::new();
-		for a in self.ancestry_iter(parent.clone()).unwrap().take(uncle_generations) {
+		let ancestry = match self.ancestry_iter(parent.clone()) {
-			excluded.extend(self.uncle_hashes(&a).unwrap().into_iter());
+			Some(iter) => iter,
-			excluded.insert(a);
+			None => return None,
+		};
+
+		for a in ancestry.clone().take(uncle_generations) {
+			if let Some(uncles) = self.uncle_hashes(&a) {
+				excluded.extend(uncles);
+				excluded.insert(a);
+			} else {
+				break
+			}
 		}
 
 		let mut ret = Vec::new();
-		for a in self.ancestry_iter(parent.clone()).unwrap().skip(1).take(uncle_generations) {
+		for a in ancestry.skip(1).take(uncle_generations) {
-			ret.extend(self.block_details(&a).unwrap().children.iter()
+			if let Some(details) = self.block_details(&a) {
-				.filter(|h| !excluded.contains(h))
+				ret.extend(details.children.iter().filter(|h| !excluded.contains(h)))
-			);
+			} else {
+				break
+			}
 		}
+
 		Some(ret)
 	}
 
@@ -1008,7 +1087,7 @@ impl BlockChain {
 	}
 
 	/// This function returns modified transaction addresses.
-	fn prepare_transaction_addresses_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<H256, TransactionAddress> {
+	fn prepare_transaction_addresses_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<H256, Option<TransactionAddress>> {
 		let block = BlockView::new(block_bytes);
 		let transaction_hashes = block.transaction_hashes();
 
@@ -1017,10 +1096,10 @@ impl BlockChain {
 				transaction_hashes.into_iter()
 					.enumerate()
 					.map(|(i ,tx_hash)| {
-						(tx_hash, TransactionAddress {
+						(tx_hash, Some(TransactionAddress {
 							block_hash: info.hash.clone(),
 							index: i
-						})
+						}))
 					})
 					.collect()
 			},
@@ -1031,23 +1110,30 @@ impl BlockChain {
 						let hashes = BodyView::new(&bytes).transaction_hashes();
 						hashes.into_iter()
 							.enumerate()
-							.map(|(i, tx_hash)| (tx_hash, TransactionAddress {
+							.map(|(i, tx_hash)| (tx_hash, Some(TransactionAddress {
 								block_hash: hash.clone(),
 								index: i,
-							}))
+							})))
-							.collect::<HashMap<H256, TransactionAddress>>()
+							.collect::<HashMap<H256, Option<TransactionAddress>>>()
 					});
 
 				let current_addresses = transaction_hashes.into_iter()
 					.enumerate()
 					.map(|(i ,tx_hash)| {
-						(tx_hash, TransactionAddress {
+						(tx_hash, Some(TransactionAddress {
 							block_hash: info.hash.clone(),
 							index: i
-						})
+						}))
 					});
 
-				addresses.chain(current_addresses).collect()
+				let retracted = data.retracted.iter().flat_map(|hash| {
+					let bytes = self.block_body(hash).expect("Retracted block must be in database.");
+					let hashes = BodyView::new(&bytes).transaction_hashes();
+					hashes.into_iter().map(|hash| (hash, None)).collect::<HashMap<H256, Option<TransactionAddress>>>()
+				});
+
+				// The order here is important! Don't remove transaction if it was part of enacted blocks as well.
+				retracted.chain(addresses).chain(current_addresses).collect()
 			},
 			BlockLocation::Branch => HashMap::new(),
 		}
@@ -1192,6 +1278,24 @@ impl BlockChain {
 		body.append_raw(block_rlp.at(2).as_raw(), 1);
 		body.out()
 	}
+
+	/// Returns general blockchain information
+	pub fn chain_info(&self) -> BlockChainInfo {
+		// ensure data consistencly by locking everything first
+		let best_block = self.best_block.read();
+		let best_ancient_block = self.best_ancient_block.read();
+		BlockChainInfo {
+			total_difficulty: best_block.total_difficulty.clone(),
+			pending_total_difficulty: best_block.total_difficulty.clone(),
+			genesis_hash: self.genesis_hash(),
+			best_block_hash: best_block.hash.clone(),
+			best_block_number: best_block.number,
+			first_block_hash: self.first_block(),
+			first_block_number: From::from(self.first_block_number()),
+			ancient_block_hash: best_ancient_block.as_ref().map(|b| b.hash.clone()),
+			ancient_block_number: best_ancient_block.as_ref().map(|b| b.number),
+		}
+	}
 }
 
 #[cfg(test)]
@@ -1345,6 +1449,70 @@ mod tests {
 		// TODO: insert block that already includes one of them as an uncle to check it's not allowed.
 	}
 
+	#[test]
+	fn test_fork_transaction_addresses() {
+		let mut canon_chain = ChainGenerator::default();
+		let mut finalizer = BlockFinalizer::default();
+		let genesis = canon_chain.generate(&mut finalizer).unwrap();
+		let mut fork_chain = canon_chain.fork(1);
+		let mut fork_finalizer = finalizer.fork();
+
+		let t1 = Transaction {
+			nonce: 0.into(),
+			gas_price: 0.into(),
+			gas: 100_000.into(),
+			action: Action::Create,
+			value: 100.into(),
+			data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
+		}.sign(&"".sha3());
+
+
+		let b1a = canon_chain
+			.with_transaction(t1.clone())
+			.generate(&mut finalizer).unwrap();
+
+		// Empty block
+		let b1b = fork_chain
+			.generate(&mut fork_finalizer).unwrap();
+
+		let b2 = fork_chain
+			.generate(&mut fork_finalizer).unwrap();
+
+		let b1a_hash = BlockView::new(&b1a).header_view().sha3();
+		let b2_hash = BlockView::new(&b2).header_view().sha3();
+
+		let t1_hash = t1.hash();
+
+		let temp = RandomTempPath::new();
+		let db = new_db(temp.as_str());
+		let bc = BlockChain::new(Config::default(), &genesis, db.clone());
+
+		let mut batch = db.transaction();
+		let _ = bc.insert_block(&mut batch, &b1a, vec![]);
+		bc.commit();
+		let _ = bc.insert_block(&mut batch, &b1b, vec![]);
+		bc.commit();
+		db.write(batch).unwrap();
+
+		assert_eq!(bc.best_block_hash(), b1a_hash);
+		assert_eq!(bc.transaction_address(&t1_hash), Some(TransactionAddress {
+			block_hash: b1a_hash.clone(),
+			index: 0,
+		}));
+
+		// now let's make forked chain the canon chain
+		let mut batch = db.transaction();
+		let _ = bc.insert_block(&mut batch, &b2, vec![]);
+		bc.commit();
+		db.write(batch).unwrap();
+
+		// Transaction should be retracted
+		assert_eq!(bc.best_block_hash(), b2_hash);
+		assert_eq!(bc.transaction_address(&t1_hash), None);
+	}
+
+
+
 	#[test]
 	fn test_overwriting_transaction_addresses() {
 		let mut canon_chain = ChainGenerator::default();
@@ -1415,14 +1583,14 @@ mod tests {
 		db.write(batch).unwrap();
 
 		assert_eq!(bc.best_block_hash(), b1a_hash);
-		assert_eq!(bc.transaction_address(&t1_hash).unwrap(), TransactionAddress {
+		assert_eq!(bc.transaction_address(&t1_hash), Some(TransactionAddress {
 			block_hash: b1a_hash.clone(),
 			index: 0,
-		});
+		}));
-		assert_eq!(bc.transaction_address(&t2_hash).unwrap(), TransactionAddress {
+		assert_eq!(bc.transaction_address(&t2_hash), Some(TransactionAddress {
 			block_hash: b1a_hash.clone(),
 			index: 1,
-		});
+		}));
 
 		// now let's make forked chain the canon chain
 		let mut batch = db.transaction();
@@ -1431,18 +1599,18 @@ mod tests {
 		db.write(batch).unwrap();
 
 		assert_eq!(bc.best_block_hash(), b2_hash);
-		assert_eq!(bc.transaction_address(&t1_hash).unwrap(), TransactionAddress {
+		assert_eq!(bc.transaction_address(&t1_hash), Some(TransactionAddress {
 			block_hash: b1b_hash.clone(),
 			index: 1,
-		});
+		}));
-		assert_eq!(bc.transaction_address(&t2_hash).unwrap(), TransactionAddress {
+		assert_eq!(bc.transaction_address(&t2_hash), Some(TransactionAddress {
 			block_hash: b1b_hash.clone(),
 			index: 0,
-		});
+		}));
-		assert_eq!(bc.transaction_address(&t3_hash).unwrap(), TransactionAddress {
+		assert_eq!(bc.transaction_address(&t3_hash), Some(TransactionAddress {
 			block_hash: b2_hash.clone(),
 			index: 0,
-		});
+		}));
 	}
 
 	#[test]
@@ -1682,7 +1850,7 @@ mod tests {
 			gas_price: 0.into(),
 			gas: 100_000.into(),
 			action: Action::Create,
-			value: 100.into(),
+			value: 101.into(),
 			data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
 		}.sign(&"".sha3());
 		let t2 = Transaction {
@@ -1690,7 +1858,7 @@ mod tests {
 			gas_price: 0.into(),
 			gas: 100_000.into(),
 			action: Action::Create,
-			value: 100.into(),
+			value: 102.into(),
 			data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
 		}.sign(&"".sha3());
 		let t3 = Transaction {
@@ -1698,7 +1866,7 @@ mod tests {
 			gas_price: 0.into(),
 			gas: 100_000.into(),
 			action: Action::Create,
-			value: 100.into(),
+			value: 103.into(),
 			data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
 		}.sign(&"".sha3());
 		let tx_hash1 = t1.hash();

ethcore/src/blockchain/update.rs

@@ -17,8 +17,8 @@ pub struct ExtrasUpdate<'a> {
 	pub block_details: HashMap<H256, BlockDetails>,
 	/// Modified block receipts.
 	pub block_receipts: HashMap<H256, BlockReceipts>,
-	/// Modified transaction addresses.
-	pub transactions_addresses: HashMap<H256, TransactionAddress>,
 	/// Modified blocks blooms.
 	pub blocks_blooms: HashMap<LogGroupPosition, BloomGroup>,
+	/// Modified transaction addresses (None signifies removed transactions).
+	pub transactions_addresses: HashMap<H256, Option<TransactionAddress>>,
 }

ethcore/src/cache_manager.rs

@@ -55,18 +55,23 @@ impl<T> CacheManager<T> where T: Eq + Hash {
 		}
 
 		for _ in 0..COLLECTION_QUEUE_SIZE {
-			let current_size = notify_unused(self.cache_usage.pop_back().unwrap());
+			if let Some(back) = self.cache_usage.pop_back() {
-			self.cache_usage.push_front(Default::default());
+				let current_size = notify_unused(back);
-			if current_size < self.max_cache_size {
+				self.cache_usage.push_front(Default::default());
-				break;
+				if current_size < self.max_cache_size {
+					break
+				}
 			}
 		}
 	}
 
 	fn rotate_cache_if_needed(&mut self) {
+		if self.cache_usage.len() == 0 { return }
+
 		if self.cache_usage[0].len() * self.bytes_per_cache_entry > self.pref_cache_size / COLLECTION_QUEUE_SIZE {
-			let cache = self.cache_usage.pop_back().unwrap();
+			if let Some(cache) = self.cache_usage.pop_back() {
-			self.cache_usage.push_front(cache);
+				self.cache_usage.push_front(cache);
+			}
 		}
 	}
 }

ethcore/src/client/chain_notify.rs

@@ -18,7 +18,7 @@ use ipc::IpcConfig;
 use util::H256;
 
 /// Represents what has to be handled by actor listening to chain events
-#[derive(Ipc)]
+#[ipc]
 pub trait ChainNotify : Send + Sync {
 	/// fires when chain has new blocks.
 	fn new_blocks(&self,

ethcore/src/client/client.rs

@@ -23,15 +23,14 @@ use time::precise_time_ns;
 
 // util
 use util::{Bytes, PerfTimer, Itertools, Mutex, RwLock};
-use util::journaldb::{self, JournalDB};
+use util::{journaldb, TrieFactory, Trie};
-use util::{U256, H256, Address, H2048, Uint};
+use util::trie::TrieSpec;
-use util::sha3::*;
+use util::{U256, H256, Address, H2048, Uint, FixedHash};
-use util::TrieFactory;
 use util::kvdb::*;
 
 // other
 use io::*;
-use views::{BlockView, HeaderView, BodyView};
+use views::{HeaderView, BodyView, BlockView};
 use error::{ImportError, ExecutionError, CallError, BlockError, ImportResult, Error as EthcoreError};
 use header::BlockNumber;
 use state::State;
@@ -47,12 +46,12 @@ use transaction::{LocalizedTransaction, SignedTransaction, Action};
 use blockchain::extras::TransactionAddress;
 use types::filter::Filter;
 use log_entry::LocalizedLogEntry;
-use block_queue::{BlockQueue, BlockQueueInfo};
+use verification::queue::BlockQueue;
 use blockchain::{BlockChain, BlockProvider, TreeRoute, ImportRoute};
 use client::{
 	BlockID, TransactionID, UncleID, TraceId, ClientConfig, BlockChainClient,
 	MiningBlockChainClient, TraceFilter, CallAnalytics, BlockImportError, Mode,
-	ChainNotify
+	ChainNotify,
 };
 use client::Error as ClientError;
 use env_info::EnvInfo;
@@ -66,15 +65,17 @@ use miner::{Miner, MinerService};
 use snapshot::{self, io as snapshot_io};
 use factory::Factories;
 use rlp::{View, UntrustedRlp};
-
+use state_db::StateDB;
 
 // re-export
 pub use types::blockchain_info::BlockChainInfo;
 pub use types::block_status::BlockStatus;
 pub use blockchain::CacheSize as BlockChainCacheSize;
+pub use verification::queue::QueueInfo as BlockQueueInfo;
 
 const MAX_TX_QUEUE_SIZE: usize = 4096;
 const MAX_QUEUE_SIZE_TO_SLEEP_ON: usize = 2;
+const MIN_HISTORY_SIZE: u64 = 8;
 
 impl fmt::Display for BlockChainInfo {
 	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
@@ -126,9 +127,9 @@ pub struct Client {
 	tracedb: RwLock<TraceDB<BlockChain>>,
 	engine: Arc<Engine>,
 	config: ClientConfig,
-	db: RwLock<Arc<Database>>,
 	pruning: journaldb::Algorithm,
-	state_db: RwLock<Box<JournalDB>>,
+	db: RwLock<Arc<Database>>,
+	state_db: Mutex<StateDB>,
 	block_queue: BlockQueue,
 	report: RwLock<ClientReport>,
 	import_lock: Mutex<()>,
@@ -142,17 +143,7 @@ pub struct Client {
 	queue_transactions: AtomicUsize,
 	last_hashes: RwLock<VecDeque<H256>>,
 	factories: Factories,
-}
+	history: u64,
-
-/// The pruning constant -- how old blocks must be before we
-/// assume finality of a given candidate.
-pub const HISTORY: u64 = 1200;
-
-/// Append a path element to the given path and return the string.
-pub fn append_path<P>(path: P, item: &str) -> String where P: AsRef<Path> {
-	let mut p = path.as_ref().to_path_buf();
-	p.push(item);
-	p.to_str().unwrap().to_owned()
 }
 
 impl Client {
@@ -168,32 +159,60 @@ impl Client {
 		let path = path.to_path_buf();
 		let gb = spec.genesis_block();
 
-		let db = Arc::new(try!(Database::open(&db_config, &path.to_str().unwrap()).map_err(ClientError::Database)));
+		let db = Arc::new(try!(Database::open(&db_config, &path.to_str().expect("DB path could not be converted to string.")).map_err(ClientError::Database)));
 		let chain = Arc::new(BlockChain::new(config.blockchain.clone(), &gb, db.clone()));
 		let tracedb = RwLock::new(TraceDB::new(config.tracing.clone(), db.clone(), chain.clone()));
 
-		let mut state_db = journaldb::new(db.clone(), config.pruning, ::db::COL_STATE);
+		let trie_spec = match config.fat_db {
-		if state_db.is_empty() && try!(spec.ensure_db_good(state_db.as_hashdb_mut())) {
+			true => TrieSpec::Fat,
+			false => TrieSpec::Secure,
+		};
+
+		let journal_db = journaldb::new(db.clone(), config.pruning, ::db::COL_STATE);
+		let mut state_db = StateDB::new(journal_db, config.state_cache_size);
+		if state_db.journal_db().is_empty() && try!(spec.ensure_db_good(&mut state_db)) {
 			let mut batch = DBTransaction::new(&db);
-			try!(state_db.commit(&mut batch, 0, &spec.genesis_header().hash(), None));
+			try!(state_db.journal_under(&mut batch, 0, &spec.genesis_header().hash()));
 			try!(db.write(batch).map_err(ClientError::Database));
 		}
 
-		if !chain.block_header(&chain.best_block_hash()).map_or(true, |h| state_db.contains(h.state_root())) {
+		trace!("Cleanup journal: DB Earliest = {:?}, Latest = {:?}", state_db.journal_db().earliest_era(), state_db.journal_db().latest_era());
+
+		let history = if config.history < MIN_HISTORY_SIZE {
+			info!(target: "client", "Ignoring pruning history parameter of {}\
+				, falling back to minimum of {}",
+				config.history, MIN_HISTORY_SIZE);
+			MIN_HISTORY_SIZE
+		} else {
+			config.history
+		};
+
+		if let (Some(earliest), Some(latest)) = (state_db.journal_db().earliest_era(), state_db.journal_db().latest_era()) {
+			if latest > earliest && latest - earliest > history {
+				for era in earliest..(latest - history + 1) {
+					trace!("Removing era {}", era);
+					let mut batch = DBTransaction::new(&db);
+					try!(state_db.mark_canonical(&mut batch, era, &chain.block_hash(era).expect("Old block not found in the database")));
+					try!(db.write(batch).map_err(ClientError::Database));
+				}
+			}
+		}
+
+		if !chain.block_header(&chain.best_block_hash()).map_or(true, |h| state_db.journal_db().contains(h.state_root())) {
 			warn!("State root not found for block #{} ({})", chain.best_block_number(), chain.best_block_hash().hex());
 		}
 
 		let engine = spec.engine.clone();
 
-		let block_queue = BlockQueue::new(config.queue.clone(), engine.clone(), message_channel.clone());
+		let block_queue = BlockQueue::new(config.queue.clone(), engine.clone(), message_channel.clone(), config.verifier_type.verifying_seal());
 		let panic_handler = PanicHandler::new_in_arc();
 		panic_handler.forward_from(&block_queue);
 
 		let awake = match config.mode { Mode::Dark(..) => false, _ => true };
 
 		let factories = Factories {
-			vm: EvmFactory::new(config.vm_type.clone()),
+			vm: EvmFactory::new(config.vm_type.clone(), config.jump_table_size),
-			trie: TrieFactory::new(config.trie_spec.clone()),
+			trie: TrieFactory::new(trie_spec),
 			accountdb: Default::default(),
 		};
 
@@ -208,7 +227,7 @@ impl Client {
 			verifier: verification::new(config.verifier_type.clone()),
 			config: config,
 			db: RwLock::new(db),
-			state_db: RwLock::new(state_db),
+			state_db: Mutex::new(state_db),
 			block_queue: block_queue,
 			report: RwLock::new(Default::default()),
 			import_lock: Mutex::new(()),
@@ -219,6 +238,7 @@ impl Client {
 			queue_transactions: AtomicUsize::new(0),
 			last_hashes: RwLock::new(VecDeque::new()),
 			factories: factories,
+			history: history,
 		};
 		Ok(Arc::new(client))
 	}
@@ -277,7 +297,7 @@ impl Client {
 		let chain = self.chain.read();
 		// Check the block isn't so old we won't be able to enact it.
 		let best_block_number = chain.best_block_number();
-		if best_block_number >= HISTORY && header.number() <= best_block_number - HISTORY {
+		if best_block_number >= self.history && header.number() <= best_block_number - self.history {
 			warn!(target: "client", "Block import failed for #{} ({})\nBlock is ancient (current best block: #{}).", header.number(), header.hash(), best_block_number);
 			return Err(());
 		}
@@ -291,30 +311,27 @@ impl Client {
 
 		// Check if Parent is in chain
 		let chain_has_parent = chain.block_header(header.parent_hash());
-		if let None = chain_has_parent {
+		if let Some(parent) = chain_has_parent {
+			// Enact Verified Block
+			let last_hashes = self.build_last_hashes(header.parent_hash().clone());
+			let db = self.state_db.lock().boxed_clone_canon(&header.parent_hash());
+
+			let enact_result = enact_verified(block, engine, self.tracedb.read().tracing_enabled(), db, &parent, last_hashes, self.factories.clone());
+			let locked_block = try!(enact_result.map_err(|e| {
+				warn!(target: "client", "Block import failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
+			}));
+
+			// Final Verification
+			if let Err(e) = self.verifier.verify_block_final(header, locked_block.block().header()) {
+				warn!(target: "client", "Stage 4 block verification failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
+				return Err(());
+			}
+
+			Ok(locked_block)
+		} else {
 			warn!(target: "client", "Block import failed for #{} ({}): Parent not found ({}) ", header.number(), header.hash(), header.parent_hash());
-			return Err(());
+			Err(())
-		};
-
-		// Enact Verified Block
-		let parent = chain_has_parent.unwrap();
-		let last_hashes = self.build_last_hashes(header.parent_hash().clone());
-		let db = self.state_db.read().boxed_clone();
-
-		let enact_result = enact_verified(block, engine, self.tracedb.read().tracing_enabled(), db, &parent, last_hashes, self.factories.clone());
-		if let Err(e) = enact_result {
-			warn!(target: "client", "Block import failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
-			return Err(());
-		};
-
-		// Final Verification
-		let locked_block = enact_result.unwrap();
-		if let Err(e) = self.verifier.verify_block_final(header, locked_block.block().header()) {
-			warn!(target: "client", "Stage 4 block verification failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
-			return Err(());
 		}
-
-		Ok(locked_block)
 	}
 
 	fn calculate_enacted_retracted(&self, import_results: &[ImportRoute]) -> (Vec<H256>, Vec<H256>) {
@@ -345,58 +362,55 @@ impl Client {
 
 	/// This is triggered by a message coming from a block queue when the block is ready for insertion
 	pub fn import_verified_blocks(&self) -> usize {
-		let max_blocks_to_import = 64;
+		let max_blocks_to_import = 4;
-		let (imported_blocks, import_results, invalid_blocks, imported, duration) = {
+		let (imported_blocks, import_results, invalid_blocks, imported, duration, is_empty) = {
 			let mut imported_blocks = Vec::with_capacity(max_blocks_to_import);
 			let mut invalid_blocks = HashSet::new();
 			let mut import_results = Vec::with_capacity(max_blocks_to_import);
 
 			let _import_lock = self.import_lock.lock();
+			let blocks = self.block_queue.drain(max_blocks_to_import);
+			if blocks.is_empty() {
+				return 0;
+			}
 			let _timer = PerfTimer::new("import_verified_blocks");
 			let start = precise_time_ns();
-			let blocks = self.block_queue.drain(max_blocks_to_import);
 
 			for block in blocks {
 				let header = &block.header;
-				if invalid_blocks.contains(header.parent_hash()) {
+				let is_invalid = invalid_blocks.contains(header.parent_hash());
+				if is_invalid {
 					invalid_blocks.insert(header.hash());
 					continue;
 				}
-				let closed_block = self.check_and_close_block(&block);
+				if let Ok(closed_block) = self.check_and_close_block(&block) {
-				if let Err(_) = closed_block {
+					imported_blocks.push(header.hash());
+
+					let route = self.commit_block(closed_block, &header.hash(), &block.bytes);
+					import_results.push(route);
+
+					self.report.write().accrue_block(&block);
+				} else {
 					invalid_blocks.insert(header.hash());
-					continue;
 				}
-
-				let closed_block = closed_block.unwrap();
-				imported_blocks.push(header.hash());
-
-				let route = self.commit_block(closed_block, &header.hash(), &block.bytes);
-				import_results.push(route);
-
-				self.report.write().accrue_block(&block);
 			}
 
 			let imported = imported_blocks.len();
 			let invalid_blocks = invalid_blocks.into_iter().collect::<Vec<H256>>();
 
-			{
+			if !invalid_blocks.is_empty() {
-				if !invalid_blocks.is_empty() {
+				self.block_queue.mark_as_bad(&invalid_blocks);
-					self.block_queue.mark_as_bad(&invalid_blocks);
-				}
-				if !imported_blocks.is_empty() {
-					self.block_queue.mark_as_good(&imported_blocks);
-				}
 			}
+			let is_empty = self.block_queue.mark_as_good(&imported_blocks);
 			let duration_ns = precise_time_ns() - start;
-			(imported_blocks, import_results, invalid_blocks, imported, duration_ns)
+			(imported_blocks, import_results, invalid_blocks, imported, duration_ns, is_empty)
 		};
 
 		{
-			if !imported_blocks.is_empty() && self.block_queue.queue_info().is_empty() {
+			if !imported_blocks.is_empty() && is_empty {
 				let (enacted, retracted) = self.calculate_enacted_retracted(&import_results);
 
-				if self.queue_info().is_empty() {
+				if is_empty {
 					self.miner.chain_new_blocks(self, &imported_blocks, &invalid_blocks, &enacted, &retracted);
 				}
 
@@ -417,17 +431,33 @@ impl Client {
 		imported
 	}
 
+	/// Import a block with transaction receipts.
+	/// The block is guaranteed to be the next best blocks in the first block sequence.
+	/// Does no sealing or transaction validation.
+	fn import_old_block(&self, block_bytes: Bytes, receipts_bytes: Bytes) -> H256 {
+		let block = BlockView::new(&block_bytes);
+		let hash = block.header().hash();
+		let _import_lock = self.import_lock.lock();
+		{
+			let _timer = PerfTimer::new("import_old_block");
+			let chain = self.chain.read();
+
+			// Commit results
+			let receipts = ::rlp::decode(&receipts_bytes);
+			let mut batch = DBTransaction::new(&self.db.read());
+			chain.insert_unordered_block(&mut batch, &block_bytes, receipts, None, false, true);
+			// Final commit to the DB
+			self.db.read().write_buffered(batch);
+			chain.commit();
+		}
+		self.db.read().flush().expect("DB flush failed.");
+		hash
+	}
+
 	fn commit_block<B>(&self, block: B, hash: &H256, block_data: &[u8]) -> ImportRoute where B: IsBlock + Drain {
 		let number = block.header().number();
 		let parent = block.header().parent_hash().clone();
 		let chain = self.chain.read();
-		// Are we committing an era?
-		let ancient = if number >= HISTORY {
-			let n = number - HISTORY;
-			Some((n, chain.block_hash(n).unwrap()))
-		} else {
-			None
-		};
 
 		// Commit results
 		let receipts = block.receipts().to_owned();
@@ -442,7 +472,18 @@ impl Client {
 		// CHECK! I *think* this is fine, even if the state_root is equal to another
 		// already-imported block of the same number.
 		// TODO: Prove it with a test.
-		block.drain().commit(&mut batch, number, hash, ancient).expect("DB commit failed.");
+		let mut state = block.drain();
+
+		state.journal_under(&mut batch, number, hash).expect("DB commit failed");
+
+		if number >= self.history {
+			let n = number - self.history;
+			if let Some(ancient_hash) = chain.block_hash(n) {
+				state.mark_canonical(&mut batch, n, &ancient_hash).expect("DB commit failed");
+			} else {
+				debug!(target: "client", "Missing expected hash for block {}", n);
+			}
+		}
 
 		let route = chain.insert_block(&mut batch, block_data, receipts);
 		self.tracedb.read().import(&mut batch, TraceImportRequest {
@@ -452,10 +493,12 @@ impl Client {
 			enacted: route.enacted.clone(),
 			retracted: route.retracted.len()
 		});
+
+		let is_canon = route.enacted.last().map_or(false, |h| h == hash);
+		state.sync_cache(&route.enacted, &route.retracted, is_canon);
 		// Final commit to the DB
 		self.db.read().write_buffered(batch);
 		chain.commit();
-
 		self.update_last_hashes(&parent, hash);
 		route
 	}
@@ -497,10 +540,10 @@ impl Client {
 		};
 
 		self.block_header(id).and_then(|header| {
-			let db = self.state_db.read().boxed_clone();
+			let db = self.state_db.lock().boxed_clone();
 
 			// early exit for pruned blocks
-			if db.is_pruned() && self.chain.read().best_block_number() >= block_number + HISTORY {
+			if db.is_pruned() && self.chain.read().best_block_number() >= block_number + self.history {
 				return None;
 			}
 
@@ -527,9 +570,11 @@ impl Client {
 
 	/// Get a copy of the best block's state.
 	pub fn state(&self) -> State {
+		let header = self.best_block_header();
+		let header = HeaderView::new(&header);
 		State::from_existing(
-			self.state_db.read().boxed_clone(),
+			self.state_db.lock().boxed_clone_canon(&header.hash()),
-			HeaderView::new(&self.best_block_header()).state_root(),
+			header.state_root(),
 			self.engine.account_start_nonce(),
 			self.factories.clone())
 		.expect("State root of best block header always valid.")
@@ -543,7 +588,7 @@ impl Client {
 	/// Get the report.
 	pub fn report(&self) -> ClientReport {
 		let mut report = self.report.read().clone();
-		report.state_db_mem = self.state_db.read().mem_used();
+		report.state_db_mem = self.state_db.lock().mem_used();
 		report
 	}
 
@@ -599,24 +644,27 @@ impl Client {
 	/// Take a snapshot at the given block.
 	/// If the ID given is "latest", this will default to 1000 blocks behind.
 	pub fn take_snapshot<W: snapshot_io::SnapshotWriter + Send>(&self, writer: W, at: BlockID, p: &snapshot::Progress) -> Result<(), EthcoreError> {
-		let db = self.state_db.read().boxed_clone();
+		let db = self.state_db.lock().journal_db().boxed_clone();
 		let best_block_number = self.chain_info().best_block_number;
 		let block_number = try!(self.block_number(at).ok_or(snapshot::Error::InvalidStartingBlock(at)));
 
-		if best_block_number > HISTORY + block_number && db.is_pruned() {
+		if best_block_number > self.history + block_number && db.is_pruned() {
 			return Err(snapshot::Error::OldBlockPrunedDB.into());
 		}
 
+		let history = ::std::cmp::min(self.history, 1000);
+
 		let start_hash = match at {
 			BlockID::Latest => {
-				let start_num = if best_block_number > 1000 {
+				let start_num = match db.earliest_era() {
-					best_block_number - 1000
+					Some(era) => ::std::cmp::max(era, best_block_number - history),
-				} else {
+					None => best_block_number - history,
-					0
 				};
 
-				self.block_hash(BlockID::Number(start_num))
+				match self.block_hash(BlockID::Number(start_num)) {
-					.expect("blocks within HISTORY are always stored.")
+					Some(h) => h,
+					None => return Err(snapshot::Error::InvalidStartingBlock(at).into()),
+				}
 			}
 			_ => match self.block_hash(at) {
 				Some(hash) => hash,
@@ -629,6 +677,11 @@ impl Client {
 		Ok(())
 	}
 
+	/// Ask the client what the history parameter is.
+	pub fn pruning_history(&self) -> u64 {
+		self.history
+	}
+
 	fn block_hash(chain: &BlockChain, id: BlockID) -> Option<H256> {
 		match id {
 			BlockID::Hash(hash) => Some(hash),
@@ -678,14 +731,15 @@ impl snapshot::DatabaseRestore for Client {
 		trace!(target: "snapshot", "Replacing client database with {:?}", new_db);
 
 		let _import_lock = self.import_lock.lock();
-		let mut state_db = self.state_db.write();
+		let mut state_db = self.state_db.lock();
 		let mut chain = self.chain.write();
 		let mut tracedb = self.tracedb.write();
 		self.miner.clear();
 		let db = self.db.write();
 		try!(db.restore(new_db));
 
-		*state_db = journaldb::new(db.clone(), self.pruning, ::db::COL_STATE);
+		let cache_size = state_db.cache_size();
+		*state_db = StateDB::new(journaldb::new(db.clone(), self.pruning, ::db::COL_STATE), cache_size);
 		*chain = Arc::new(BlockChain::new(self.config.blockchain.clone(), &[], db.clone()));
 		*tracedb = TraceDB::new(self.config.tracing.clone(), db.clone(), chain.clone());
 		Ok(())
@@ -805,7 +859,7 @@ impl BlockChainClient for Client {
 		let chain = self.chain.read();
 		match Self::block_hash(&chain, id) {
 			Some(ref hash) if chain.is_known(hash) => BlockStatus::InChain,
-			Some(hash) => self.block_queue.block_status(&hash),
+			Some(hash) => self.block_queue.status(&hash).into(),
 			None => BlockStatus::Unknown
 		}
 	}
@@ -830,7 +884,7 @@ impl BlockChainClient for Client {
 	}
 
 	fn code(&self, address: &Address, id: BlockID) -> Option<Option<Bytes>> {
-		self.state_at(id).map(|s| s.code(address))
+		self.state_at(id).map(|s| s.code(address).map(|c| (*c).clone()))
 	}
 
 	fn balance(&self, address: &Address, id: BlockID) -> Option<U256> {
@@ -841,6 +895,38 @@ impl BlockChainClient for Client {
 		self.state_at(id).map(|s| s.storage_at(address, position))
 	}
 
+	fn list_accounts(&self, id: BlockID) -> Option<Vec<Address>> {
+		if !self.factories.trie.is_fat() {
+			trace!(target: "fatdb", "list_accounts: Not a fat DB");
+			return None;
+		}
+
+		let state = match self.state_at(id) {
+			Some(state) => state,
+			_ => return None,
+		};
+
+		let (root, db) = state.drop();
+		let trie = match self.factories.trie.readonly(db.as_hashdb(), &root) {
+			Ok(trie) => trie,
+			_ => {
+				trace!(target: "fatdb", "list_accounts: Couldn't open the DB");
+				return None;
+			}
+		};
+
+		let iter = match trie.iter() {
+			Ok(iter) => iter,
+			_ => return None,
+		};
+
+		let accounts = iter.filter_map(|item| {
+			item.ok().map(|(addr, _)| Address::from_slice(&addr))
+		}).collect();
+
+		Some(accounts)
+	}
+
 	fn transaction(&self, id: TransactionID) -> Option<LocalizedTransaction> {
 		self.transaction_address(id).and_then(|address| self.chain.read().transaction(&address))
 	}
@@ -852,12 +938,17 @@ impl BlockChainClient for Client {
 
 	fn transaction_receipt(&self, id: TransactionID) -> Option<LocalizedReceipt> {
 		let chain = self.chain.read();
-		self.transaction_address(id).and_then(|address| chain.block_number(&address.block_hash).and_then(|block_number| {
+		self.transaction_address(id)
+			.and_then(|address| chain.block_number(&address.block_hash).and_then(|block_number| {
 			let t = chain.block_body(&address.block_hash)
-				.and_then(|block| BodyView::new(&block).localized_transaction_at(&address.block_hash, block_number, address.index));
+				.and_then(|block| {
+					BodyView::new(&block).localized_transaction_at(&address.block_hash, block_number, address.index)
+				});
 
-			match (t, chain.transaction_receipt(&address)) {
+			let tx_and_sender = t.and_then(|tx| tx.sender().ok().map(|sender| (tx, sender)));
-				(Some(tx), Some(receipt)) => {
+
+			match (tx_and_sender, chain.transaction_receipt(&address)) {
+				(Some((tx, sender)), Some(receipt)) => {
 					let block_hash = tx.block_hash.clone();
 					let block_number = tx.block_number.clone();
 					let transaction_hash = tx.hash();
@@ -879,7 +970,7 @@ impl BlockChainClient for Client {
 						gas_used: receipt.gas_used - prior_gas_used,
 						contract_address: match tx.action {
 							Action::Call(_) => None,
-							Action::Create => Some(contract_address(&tx.sender().unwrap(), &tx.nonce))
+							Action::Create => Some(contract_address(&sender, &tx.nonce))
 						},
 						logs: receipt.logs.into_iter().enumerate().map(|(i, log)| LocalizedLogEntry {
 							entry: log,
@@ -909,7 +1000,7 @@ impl BlockChainClient for Client {
 	}
 
 	fn state_data(&self, hash: &H256) -> Option<Bytes> {
-		self.state_db.read().state(hash)
+		self.state_db.lock().journal_db().state(hash)
 	}
 
 	fn block_receipts(&self, hash: &H256) -> Option<Bytes> {
@@ -917,16 +1008,35 @@ impl BlockChainClient for Client {
 	}
 
 	fn import_block(&self, bytes: Bytes) -> Result<H256, BlockImportError> {
+		use verification::queue::kind::HasHash;
+		use verification::queue::kind::blocks::Unverified;
+
+		// create unverified block here so the `sha3` calculation can be cached.
+		let unverified = Unverified::new(bytes);
+
 		{
-			let header = BlockView::new(&bytes).header_view();
+			if self.chain.read().is_known(&unverified.hash()) {
-			if self.chain.read().is_known(&header.sha3()) {
+				return Err(BlockImportError::Import(ImportError::AlreadyInChain));
+			}
+			if self.block_status(BlockID::Hash(unverified.parent_hash())) == BlockStatus::Unknown {
+				return Err(BlockImportError::Block(BlockError::UnknownParent(unverified.parent_hash())));
+			}
+		}
+		Ok(try!(self.block_queue.import(unverified)))
+	}
+
+	fn import_block_with_receipts(&self, block_bytes: Bytes, receipts_bytes: Bytes) -> Result<H256, BlockImportError> {
+		{
+			// check block order
+			let header = BlockView::new(&block_bytes).header_view();
+			if self.chain.read().is_known(&header.hash()) {
 				return Err(BlockImportError::Import(ImportError::AlreadyInChain));
 			}
 			if self.block_status(BlockID::Hash(header.parent_hash())) == BlockStatus::Unknown {
 				return Err(BlockImportError::Block(BlockError::UnknownParent(header.parent_hash())));
 			}
 		}
-		Ok(try!(self.block_queue.import_block(bytes)))
+		Ok(self.import_old_block(block_bytes, receipts_bytes))
 	}
 
 	fn queue_info(&self) -> BlockQueueInfo {
@@ -938,14 +1048,7 @@ impl BlockChainClient for Client {
 	}
 
 	fn chain_info(&self) -> BlockChainInfo {
-		let chain = self.chain.read();
+		self.chain.read().chain_info()
-		BlockChainInfo {
-			total_difficulty: chain.best_block_total_difficulty(),
-			pending_total_difficulty: chain.best_block_total_difficulty(),
-			genesis_hash: chain.genesis_hash(),
-			best_block_hash: chain.best_block_hash(),
-			best_block_number: From::from(chain.best_block_number())
-		}
 	}
 
 	fn additional_params(&self) -> BTreeMap<String, String> {
@@ -975,17 +1078,18 @@ impl BlockChainClient for Client {
 		let start = self.block_number(filter.range.start);
 		let end = self.block_number(filter.range.end);
 
-		if start.is_some() && end.is_some() {
+		match (start, end) {
-			let filter = trace::Filter {
+			(Some(s), Some(e)) => {
-				range: start.unwrap() as usize..end.unwrap() as usize,
+				let filter = trace::Filter {
-				from_address: From::from(filter.from_address),
+					range: s as usize..e as usize,
-				to_address: From::from(filter.to_address),
+					from_address: From::from(filter.from_address),
-			};
+					to_address: From::from(filter.to_address),
+				};
 
-			let traces = self.tracedb.read().filter(&filter);
+				let traces = self.tracedb.read().filter(&filter);
-			Some(traces)
+				Some(traces)
-		} else {
+			},
-			None
+			_ => None,
 		}
 	}
 
@@ -1032,7 +1136,7 @@ impl BlockChainClient for Client {
 	}
 
 	fn pending_transactions(&self) -> Vec<SignedTransaction> {
-		self.miner.pending_transactions()
+		self.miner.pending_transactions(self.chain.read().best_block_number())
 	}
 }
 
@@ -1046,7 +1150,7 @@ impl MiningBlockChainClient for Client {
 			engine,
 			self.factories.clone(),
 			false,	// TODO: this will need to be parameterised once we want to do immediate mining insertion.
-			self.state_db.read().boxed_clone(),
+			self.state_db.lock().boxed_clone_canon(&h),
 			&chain.block_header(&h).expect("h is best block hash: so its header must exist: qed"),
 			self.build_last_hashes(h.clone()),
 			author,
@@ -1057,11 +1161,15 @@ impl MiningBlockChainClient for Client {
 		// Add uncles
 		chain
 			.find_uncle_headers(&h, engine.maximum_uncle_age())
-			.unwrap()
+			.unwrap_or_else(Vec::new)
 			.into_iter()
 			.take(engine.maximum_uncle_count())
 			.foreach(|h| {
-				open_block.push_uncle(h).unwrap();
+				open_block.push_uncle(h).expect("pushing maximum_uncle_count;
+												open_block was just created;
+												push_uncle is not ok only if more than maximum_uncle_count is pushed;
+												so all push_uncle are Ok;
+												qed");
 			});
 
 		open_block
@@ -1072,20 +1180,22 @@ impl MiningBlockChainClient for Client {
 	}
 
 	fn import_sealed_block(&self, block: SealedBlock) -> ImportResult {
-		let _import_lock = self.import_lock.lock();
-		let _timer = PerfTimer::new("import_sealed_block");
-		let start = precise_time_ns();
-
 		let h = block.header().hash();
-		let number = block.header().number();
+		let start = precise_time_ns();
-
+		let route = {
-		let block_data = block.rlp_bytes();
+			// scope for self.import_lock
-		let route = self.commit_block(block, &h, &block_data);
+			let _import_lock = self.import_lock.lock();
-		trace!(target: "client", "Imported sealed block #{} ({})", number, h);
+			let _timer = PerfTimer::new("import_sealed_block");
 
+			let number = block.header().number();
+			let block_data = block.rlp_bytes();
+			let route = self.commit_block(block, &h, &block_data);
+			trace!(target: "client", "Imported sealed block #{} ({})", number, h);
+			self.state_db.lock().sync_cache(&route.enacted, &route.retracted, false);
+			route
+		};
 		let (enacted, retracted) = self.calculate_enacted_retracted(&[route]);
 		self.miner.chain_new_blocks(self, &[h.clone()], &[], &enacted, &retracted);
-
 		self.notify(|notify| {
 			notify.new_blocks(
 				vec![h.clone()],

ethcore/src/client/config.rs

@@ -15,35 +15,38 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::str::FromStr;
+use std::path::Path;
 pub use std::time::Duration;
-pub use block_queue::BlockQueueConfig;
 pub use blockchain::Config as BlockChainConfig;
 pub use trace::Config as TraceConfig;
 pub use evm::VMType;
-pub use verification::VerifierType;
+
+use verification::{VerifierType, QueueConfig};
 use util::{journaldb, CompactionProfile};
-use util::trie::TrieSpec;
 
 /// Client state db compaction profile
 #[derive(Debug, PartialEq)]
 pub enum DatabaseCompactionProfile {
-	/// Default compaction profile
+	/// Try to determine compaction profile automatically
-	Default,
+	Auto,
+	/// SSD compaction profile
+	SSD,
 	/// HDD or other slow storage io compaction profile
 	HDD,
 }
 
 impl Default for DatabaseCompactionProfile {
 	fn default() -> Self {
-		DatabaseCompactionProfile::Default
+		DatabaseCompactionProfile::Auto
 	}
 }
 
 impl DatabaseCompactionProfile {
 	/// Returns corresponding compaction profile.
-	pub fn compaction_profile(&self) -> CompactionProfile {
+	pub fn compaction_profile(&self, db_path: &Path) -> CompactionProfile {
 		match *self {
-			DatabaseCompactionProfile::Default => Default::default(),
+			DatabaseCompactionProfile::Auto => CompactionProfile::auto(db_path),
+			DatabaseCompactionProfile::SSD => CompactionProfile::ssd(),
 			DatabaseCompactionProfile::HDD => CompactionProfile::hdd(),
 		}
 	}
@@ -54,9 +57,10 @@ impl FromStr for DatabaseCompactionProfile {
 
 	fn from_str(s: &str) -> Result<Self, Self::Err> {
 		match s {
-			"ssd" | "default" => Ok(DatabaseCompactionProfile::Default),
+			"auto" => Ok(DatabaseCompactionProfile::Auto),
+			"ssd" => Ok(DatabaseCompactionProfile::SSD),
 			"hdd" => Ok(DatabaseCompactionProfile::HDD),
-			_ => Err("Invalid compaction profile given. Expected hdd/ssd (default).".into()),
+			_ => Err("Invalid compaction profile given. Expected default/hdd/ssd.".into()),
 		}
 	}
 }
@@ -84,20 +88,20 @@ impl Default for Mode {
 #[derive(Debug, PartialEq, Default)]
 pub struct ClientConfig {
 	/// Block queue configuration.
-	pub queue: BlockQueueConfig,
+	pub queue: QueueConfig,
 	/// Blockchain configuration.
 	pub blockchain: BlockChainConfig,
 	/// Trace configuration.
 	pub tracing: TraceConfig,
 	/// VM type.
 	pub vm_type: VMType,
-	/// Trie type.
+	/// Fat DB enabled?
-	pub trie_spec: TrieSpec,
+	pub fat_db: bool,
 	/// The JournalDB ("pruning") algorithm to use.
 	pub pruning: journaldb::Algorithm,
 	/// The name of the client instance.
 	pub name: String,
-	/// State db cache-size if not default
+	/// RocksDB state column cache-size if not default
 	pub db_cache_size: Option<usize>,
 	/// State db compaction profile
 	pub db_compaction: DatabaseCompactionProfile,
@@ -107,6 +111,14 @@ pub struct ClientConfig {
 	pub mode: Mode,
 	/// Type of block verifier used by client.
 	pub verifier_type: VerifierType,
+	/// State db cache-size.
+	pub state_cache_size: usize,
+	/// EVM jump-tables cache size.
+	pub jump_table_size: usize,
+	/// State pruning history size.
+	pub history: u64,
+	/// Check seal valididity on block import
+	pub check_seal: bool,
 }
 
 #[cfg(test)]
@@ -115,13 +127,13 @@ mod test {
 
 	#[test]
 	fn test_default_compaction_profile() {
-		assert_eq!(DatabaseCompactionProfile::default(), DatabaseCompactionProfile::Default);
+		assert_eq!(DatabaseCompactionProfile::default(), DatabaseCompactionProfile::Auto);
 	}
 
 	#[test]
 	fn test_parsing_compaction_profile() {
-		assert_eq!(DatabaseCompactionProfile::Default, "ssd".parse().unwrap());
+		assert_eq!(DatabaseCompactionProfile::Auto, "auto".parse().unwrap());
-		assert_eq!(DatabaseCompactionProfile::Default, "default".parse().unwrap());
+		assert_eq!(DatabaseCompactionProfile::SSD, "ssd".parse().unwrap());
 		assert_eq!(DatabaseCompactionProfile::HDD, "hdd".parse().unwrap());
 	}
 

ethcore/src/client/mod.rs

@@ -23,20 +23,28 @@ mod trace;
 mod client;
 
 pub use self::client::*;
-pub use self::config::{Mode, ClientConfig, DatabaseCompactionProfile, BlockQueueConfig, BlockChainConfig, VMType};
+pub use self::config::{Mode, ClientConfig, DatabaseCompactionProfile, BlockChainConfig, VMType};
 pub use self::error::Error;
 pub use types::ids::*;
 pub use self::test_client::{TestBlockChainClient, EachBlockWith};
 pub use types::trace_filter::Filter as TraceFilter;
 pub use executive::{Executed, Executive, TransactOptions};
 pub use env_info::{LastHashes, EnvInfo};
-pub use self::chain_notify::{ChainNotify, ChainNotifyClient};
+pub use self::chain_notify::ChainNotify;
 
 pub use types::call_analytics::CallAnalytics;
 pub use block_import_error::BlockImportError;
 pub use transaction_import::TransactionImportResult;
 pub use transaction_import::TransactionImportError;
-pub use self::traits::{BlockChainClient, MiningBlockChainClient, RemoteClient};
+pub use self::traits::{BlockChainClient, MiningBlockChainClient};
+pub use verification::VerifierType;
+
+/// IPC interfaces
+#[cfg(feature="ipc")]
+pub mod remote {
+	pub use super::traits::RemoteClient;
+	pub use super::chain_notify::ChainNotifyClient;
+}
 
 mod traits {
 	#![allow(dead_code, unused_assignments, unused_variables, missing_docs)] // codegen issues

ethcore/src/client/test_client.rs

@@ -25,8 +25,9 @@ use transaction::{Transaction, LocalizedTransaction, SignedTransaction, Action};
 use blockchain::TreeRoute;
 use client::{
 	BlockChainClient, MiningBlockChainClient, BlockChainInfo, BlockStatus, BlockID,
-	TransactionID, UncleID, TraceId, TraceFilter, LastHashes, CallAnalytics, BlockImportError
+	TransactionID, UncleID, TraceId, TraceFilter, LastHashes, CallAnalytics, BlockImportError,
 };
+use db::{NUM_COLUMNS, COL_STATE};
 use header::{Header as BlockHeader, BlockNumber};
 use filter::Filter;
 use log_entry::LocalizedLogEntry;
@@ -37,11 +38,12 @@ use evm::{Factory as EvmFactory, VMType};
 use miner::{Miner, MinerService, TransactionImportResult};
 use spec::Spec;
 
-use block_queue::BlockQueueInfo;
+use verification::queue::QueueInfo;
 use block::{OpenBlock, SealedBlock};
 use executive::Executed;
 use error::CallError;
 use trace::LocalizedTrace;
+use state_db::StateDB;
 
 /// Test client.
 pub struct TestBlockChainClient {
@@ -53,6 +55,8 @@ pub struct TestBlockChainClient {
 	pub genesis_hash: H256,
 	/// Last block hash.
 	pub last_hash: RwLock<H256>,
+	/// Extra data do set for each block
+	pub extra_data: Bytes,
 	/// Difficulty.
 	pub difficulty: RwLock<U256>,
 	/// Balances.
@@ -103,11 +107,17 @@ impl Default for TestBlockChainClient {
 impl TestBlockChainClient {
 	/// Creates new test client.
 	pub fn new() -> Self {
+		Self::new_with_extra_data(Bytes::new())
+	}
+
+	/// Creates new test client with specified extra data for each block
+	pub fn new_with_extra_data(extra_data: Bytes) -> Self {
 		let spec = Spec::new_test();
 		let mut client = TestBlockChainClient {
 			blocks: RwLock::new(HashMap::new()),
 			numbers: RwLock::new(HashMap::new()),
 			genesis_hash: H256::new(),
+			extra_data: extra_data,
 			last_hash: RwLock::new(H256::new()),
 			difficulty: RwLock::new(From::from(0)),
 			balances: RwLock::new(HashMap::new()),
@@ -120,14 +130,14 @@ impl TestBlockChainClient {
 			queue_size: AtomicUsize::new(0),
 			miner: Arc::new(Miner::with_spec(&spec)),
 			spec: spec,
-			vm_factory: EvmFactory::new(VMType::Interpreter),
+			vm_factory: EvmFactory::new(VMType::Interpreter, 1024 * 1024),
 			latest_block_timestamp: RwLock::new(10_000_000),
 		};
 		client.add_blocks(1, EachBlockWith::Nothing); // add genesis block
 		client.genesis_hash = client.last_hash.read().clone();
 		client
 	}
-
+	
 	/// Set the transaction receipt result
 	pub fn set_transaction_receipt(&self, id: TransactionID, receipt: LocalizedReceipt) {
 		self.receipts.write().insert(id, receipt);
@@ -182,6 +192,7 @@ impl TestBlockChainClient {
 			header.set_parent_hash(self.last_hash.read().clone());
 			header.set_number(n as BlockNumber);
 			header.set_gas_limit(U256::from(1_000_000));
+			header.set_extra_data(self.extra_data.clone());
 			let uncles = match with {
 				EachBlockWith::Uncle | EachBlockWith::UncleAndTransaction => {
 					let mut uncles = RlpStream::new_list(1);
@@ -283,13 +294,14 @@ impl TestBlockChainClient {
 	}
 }
 
-pub fn get_temp_journal_db() -> GuardedTempResult<Box<JournalDB>> {
+pub fn get_temp_state_db() -> GuardedTempResult<StateDB> {
 	let temp = RandomTempPath::new();
-	let db = Database::open_default(temp.as_str()).unwrap();
+	let db = Database::open(&DatabaseConfig::with_columns(NUM_COLUMNS), temp.as_str()).unwrap();
-	let journal_db = journaldb::new(Arc::new(db), journaldb::Algorithm::EarlyMerge, None);
+	let journal_db = journaldb::new(Arc::new(db), journaldb::Algorithm::EarlyMerge, COL_STATE);
+	let state_db = StateDB::new(journal_db, 1024 * 1024);
 	GuardedTempResult {
 		_temp: temp,
-		result: Some(journal_db)
+		result: Some(state_db)
 	}
 }
 
@@ -297,9 +309,9 @@ impl MiningBlockChainClient for TestBlockChainClient {
 	fn prepare_open_block(&self, author: Address, gas_range_target: (U256, U256), extra_data: Bytes) -> OpenBlock {
 		let engine = &*self.spec.engine;
 		let genesis_header = self.spec.genesis_header();
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		self.spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		self.spec.ensure_db_good(&mut db).unwrap();
 
 		let last_hashes = vec![genesis_header.hash()];
 		let mut open_block = OpenBlock::new(
@@ -382,12 +394,16 @@ impl BlockChainClient for TestBlockChainClient {
 		}
 	}
 
+	fn list_accounts(&self, _id: BlockID) -> Option<Vec<Address>> {
+		None
+	}
+
 	fn transaction(&self, _id: TransactionID) -> Option<LocalizedTransaction> {
-		unimplemented!();
+		None	// Simple default.
 	}
 
 	fn uncle(&self, _id: UncleID) -> Option<Bytes> {
-		unimplemented!();
+		None	// Simple default.
 	}
 
 	fn transaction_receipt(&self, id: TransactionID) -> Option<LocalizedReceipt> {
@@ -544,8 +560,12 @@ impl BlockChainClient for TestBlockChainClient {
 		Ok(h)
 	}
 
-	fn queue_info(&self) -> BlockQueueInfo {
+	fn import_block_with_receipts(&self, b: Bytes, _r: Bytes) -> Result<H256, BlockImportError> {
-		BlockQueueInfo {
+		self.import_block(b)
+	}
+
+	fn queue_info(&self) -> QueueInfo {
+		QueueInfo {
 			verified_queue_size: self.queue_size.load(AtomicOrder::Relaxed),
 			unverified_queue_size: 0,
 			verifying_queue_size: 0,
@@ -569,6 +589,10 @@ impl BlockChainClient for TestBlockChainClient {
 			genesis_hash: self.genesis_hash.clone(),
 			best_block_hash: self.last_hash.read().clone(),
 			best_block_number: self.blocks.read().len() as BlockNumber - 1,
+			first_block_hash: None,
+			first_block_number: None,
+			ancient_block_hash: None,
+			ancient_block_number: None,
 		}
 	}
 
@@ -595,6 +619,6 @@ impl BlockChainClient for TestBlockChainClient {
 	}
 
 	fn pending_transactions(&self) -> Vec<SignedTransaction> {
-		self.miner.pending_transactions()
+		self.miner.pending_transactions(self.chain_info().best_block_number)
 	}
 }

ethcore/src/client/traits.rs

@@ -17,7 +17,7 @@
 use std::collections::BTreeMap;
 use util::{U256, Address, H256, H2048, Bytes, Itertools};
 use blockchain::TreeRoute;
-use block_queue::BlockQueueInfo;
+use verification::queue::QueueInfo as BlockQueueInfo;
 use block::{OpenBlock, SealedBlock};
 use header::{BlockNumber};
 use transaction::{LocalizedTransaction, SignedTransaction};
@@ -38,7 +38,6 @@ use ipc::IpcConfig;
 use types::blockchain_info::BlockChainInfo;
 use types::block_status::BlockStatus;
 
-#[derive(Ipc)]
 #[ipc(client_ident="RemoteClient")]
 /// Blockchain database client. Owns and manages a blockchain and a block queue.
 pub trait BlockChainClient : Sync + Send {
@@ -112,6 +111,9 @@ pub trait BlockChainClient : Sync + Send {
 			Therefore storage_at has returned Some; qed")
 	}
 
+	/// Get a list of all accounts in the block `id`, if fat DB is in operation, otherwise `None`.
+	fn list_accounts(&self, id: BlockID) -> Option<Vec<Address>>;
+
 	/// Get transaction with given hash.
 	fn transaction(&self, id: TransactionID) -> Option<LocalizedTransaction>;
 
@@ -137,6 +139,9 @@ pub trait BlockChainClient : Sync + Send {
 	/// Import a block into the blockchain.
 	fn import_block(&self, bytes: Bytes) -> Result<H256, BlockImportError>;
 
+	/// Import a block with transaction receipts. Does no sealing and transaction validation.
+	fn import_block_with_receipts(&self, block_bytes: Bytes, receipts_bytes: Bytes) -> Result<H256, BlockImportError>;
+
 	/// Get block queue information.
 	fn queue_info(&self) -> BlockQueueInfo;
 
@@ -189,15 +194,20 @@ pub trait BlockChainClient : Sync + Send {
 	fn gas_price_statistics(&self, sample_size: usize, distribution_size: usize) -> Result<Vec<U256>, ()> {
 		let mut h = self.chain_info().best_block_hash;
 		let mut corpus = Vec::new();
-		for _ in 0..sample_size {
+		while corpus.is_empty() {
-			let block_bytes = self.block(BlockID::Hash(h)).expect("h is either the best_block_hash or an ancestor; qed");
+			for _ in 0..sample_size {
-			let block = BlockView::new(&block_bytes);
+				let block_bytes = self.block(BlockID::Hash(h)).expect("h is either the best_block_hash or an ancestor; qed");
-			let header = block.header_view();
+				let block = BlockView::new(&block_bytes);
-			if header.number() == 0 {
+				let header = block.header_view();
-				break;
+				if header.number() == 0 {
+					if corpus.is_empty() {
+						corpus.push(20_000_000_000u64.into());	// we have literally no information - it' as good a number as any.
+					}
+					break;
+				}
+				block.transaction_views().iter().foreach(|t| corpus.push(t.gas_price()));
+				h = header.parent_hash().clone();
 			}
-			block.transaction_views().iter().foreach(|t| corpus.push(t.gas_price()));
-			h = header.parent_hash().clone();
 		}
 		corpus.sort();
 		let n = corpus.len();

ethcore/src/db.rs

@@ -34,8 +34,10 @@ pub const COL_BODIES: Option<u32> = Some(2);
 pub const COL_EXTRA: Option<u32> = Some(3);
 /// Column for Traces
 pub const COL_TRACE: Option<u32> = Some(4);
+/// Column for Traces
+pub const COL_ACCOUNT_BLOOM: Option<u32> = Some(5);
 /// Number of columns in DB
-pub const NUM_COLUMNS: Option<u32> = Some(5);
+pub const NUM_COLUMNS: Option<u32> = Some(6);
 
 /// Modes for updating caches.
 #[derive(Clone, Copy)]
@@ -86,6 +88,9 @@ pub trait Writable {
 	/// Writes the value into the database.
 	fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>, value: &T) where T: rlp::Encodable, R: Deref<Target = [u8]>;
 
+	/// Deletes key from the databse.
+	fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>) where T: rlp::Encodable, R: Deref<Target = [u8]>;
+
 	/// Writes the value into the database and updates the cache.
 	fn write_with_cache<K, T, R>(&mut self, col: Option<u32>, cache: &mut Cache<K, T>, key: K, value: T, policy: CacheUpdatePolicy) where
 	K: Key<T, Target = R> + Hash + Eq,
@@ -122,6 +127,34 @@ pub trait Writable {
 			},
 		}
 	}
+
+	/// Writes and removes the values into the database and updates the cache.
+	fn extend_with_option_cache<K, T, R>(&mut self, col: Option<u32>, cache: &mut Cache<K, Option<T>>, values: HashMap<K, Option<T>>, policy: CacheUpdatePolicy) where
+	K: Key<T, Target = R> + Hash + Eq,
+	T: rlp::Encodable,
+	R: Deref<Target = [u8]> {
+		match policy {
+			CacheUpdatePolicy::Overwrite => {
+				for (key, value) in values.into_iter() {
+					match value {
+						Some(ref v) => self.write(col, &key, v),
+						None => self.delete(col, &key),
+					}
+					cache.insert(key, value);
+				}
+			},
+			CacheUpdatePolicy::Remove => {
+				for (key, value) in values.into_iter() {
+					match value {
+						Some(v) => self.write(col, &key, &v),
+						None => self.delete(col, &key),
+					}
+					cache.remove(&key);
+				}
+			},
+		}
+	}
+
 }
 
 /// Should be used to read values from database.
@@ -173,6 +206,10 @@ impl Writable for DBTransaction {
 	fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>, value: &T) where T: rlp::Encodable, R: Deref<Target = [u8]> {
 		self.put(col, &key.key(), &rlp::encode(value));
 	}
+
+	fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>) where T: rlp::Encodable, R: Deref<Target = [u8]> {
+		self.delete(col, &key.key());
+	}
 }
 
 impl Readable for Database {

ethcore/src/engines/basic_authority.rs

@@ -16,14 +16,20 @@
 
 //! A blockchain engine that supports a basic, non-BFT proof-of-authority.
 
-use common::*;
 use ethkey::{recover, public_to_address};
 use account_provider::AccountProvider;
 use block::*;
+use builtin::Builtin;
 use spec::CommonParams;
 use engines::Engine;
+use env_info::EnvInfo;
+use error::{BlockError, Error};
 use evm::Schedule;
 use ethjson;
+use header::Header;
+use transaction::SignedTransaction;
+
+use util::*;
 
 /// `BasicAuthority` params.
 #[derive(Debug, PartialEq)]
@@ -112,7 +118,7 @@ impl Engine for BasicAuthority {
 			let header = block.header();
 			let message = header.bare_hash();
 			// account should be pernamently unlocked, otherwise sealing will fail
-			if let Ok(signature) = ap.sign(*block.header().author(), message) {
+			if let Ok(signature) = ap.sign(*block.header().author(), None, message) {
 				return Some(vec![::rlp::encode(&(&*signature as &[u8])).to_vec()]);
 			} else {
 				trace!(target: "basicauthority", "generate_seal: FAIL: accounts secret key unavailable");
@@ -184,10 +190,13 @@ impl Header {
 
 #[cfg(test)]
 mod tests {
-	use common::*;
+	use util::*;
 	use block::*;
+	use env_info::EnvInfo;
+	use error::{BlockError, Error};
 	use tests::helpers::*;
 	use account_provider::AccountProvider;
+	use header::Header;
 	use spec::Spec;
 
 	/// Create a new test chain spec with `BasicAuthority` consensus engine.
@@ -252,9 +261,9 @@ mod tests {
 		let spec = new_test_authority();
 		let engine = &*spec.engine;
 		let genesis_header = spec.genesis_header();
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, addr, (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close_and_lock();

ethcore/src/engines/instant_seal.rs

@@ -18,11 +18,11 @@ use std::collections::BTreeMap;
 use util::Address;
 use builtin::Builtin;
 use engines::Engine;
+use env_info::EnvInfo;
 use spec::CommonParams;
 use evm::Schedule;
-use env_info::EnvInfo;
 use block::ExecutedBlock;
-use common::Bytes;
+use util::Bytes;
 use account_provider::AccountProvider;
 
 /// An engine which does not provide any consensus mechanism, just seals blocks internally.
@@ -67,10 +67,11 @@ impl Engine for InstantSeal {
 
 #[cfg(test)]
 mod tests {
-	use common::*;
+	use util::*;
 	use tests::helpers::*;
 	use account_provider::AccountProvider;
 	use spec::Spec;
+	use header::Header;
 	use block::*;
 
 	#[test]
@@ -81,9 +82,9 @@ mod tests {
 		let spec = Spec::new_test_instant();
 		let engine = &*spec.engine;
 		let genesis_header = spec.genesis_header();
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, addr, (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close_and_lock();

ethcore/src/engines/mod.rs

@@ -24,11 +24,16 @@ pub use self::null_engine::NullEngine;
 pub use self::instant_seal::InstantSeal;
 pub use self::basic_authority::BasicAuthority;
 
-use common::*;
+use util::*;
 use account_provider::AccountProvider;
 use block::ExecutedBlock;
+use builtin::Builtin;
+use env_info::EnvInfo;
+use error::Error;
 use spec::CommonParams;
 use evm::Schedule;
+use header::Header;
+use transaction::SignedTransaction;
 
 /// A consensus mechanism for the chain. Generally either proof-of-work or proof-of-stake-based.
 /// Provides hooks into each of the major parts of block import.
@@ -123,10 +128,14 @@ pub trait Engine : Sync + Send {
 	fn is_builtin(&self, a: &Address) -> bool { self.builtins().contains_key(a) }
 	/// Determine the code execution cost of the builtin contract with address `a`.
 	/// Panics if `is_builtin(a)` is not true.
-	fn cost_of_builtin(&self, a: &Address, input: &[u8]) -> U256 { self.builtins().get(a).unwrap().cost(input.len()) }
+	fn cost_of_builtin(&self, a: &Address, input: &[u8]) -> U256 {
+		self.builtins().get(a).expect("queried cost of nonexistent builtin").cost(input.len())
+	}
 	/// Execution the builtin contract `a` on `input` and return `output`.
 	/// Panics if `is_builtin(a)` is not true.
-	fn execute_builtin(&self, a: &Address, input: &[u8], output: &mut BytesRef) { self.builtins().get(a).unwrap().execute(input, output); }
+	fn execute_builtin(&self, a: &Address, input: &[u8], output: &mut BytesRef) {
+		self.builtins().get(a).expect("attempted to execute nonexistent builtin").execute(input, output);
+	}
 
 	// TODO: sealing stuff - though might want to leave this for later.
 }

ethcore/src/ethereum/ethash.rs

@@ -14,10 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use ethash::{quick_get_difficulty, EthashManager, H256 as EH256};
+use ethash::{quick_get_difficulty, slow_get_seedhash, EthashManager, H256 as EH256};
-use common::*;
+use util::*;
 use block::*;
+use builtin::Builtin;
+use env_info::EnvInfo;
+use error::{BlockError, Error};
+use header::Header;
 use spec::CommonParams;
+use transaction::SignedTransaction;
 use engines::Engine;
 use evm::Schedule;
 use ethjson;
@@ -32,6 +37,8 @@ pub struct EthashParams {
 	pub minimum_difficulty: U256,
 	/// Difficulty bound divisor.
 	pub difficulty_bound_divisor: U256,
+	/// Difficulty increment divisor.
+	pub difficulty_increment_divisor: u64,
 	/// Block duration.
 	pub duration_limit: u64,
 	/// Block reward.
@@ -39,13 +46,21 @@ pub struct EthashParams {
 	/// Namereg contract address.
 	pub registrar: Address,
 	/// Homestead transition block number.
-	pub frontier_compatibility_mode_limit: u64,
+	pub homestead_transition: u64,
 	/// DAO hard-fork transition block (X).
 	pub dao_hardfork_transition: u64,
 	/// DAO hard-fork refund contract address (C).
 	pub dao_hardfork_beneficiary: Address,
 	/// DAO hard-fork DAO accounts list (L)
 	pub dao_hardfork_accounts: Vec<Address>,
+	/// Transition block for a change of difficulty params (currently just bound_divisor).
+	pub difficulty_hardfork_transition: u64,
+	/// Difficulty param after the difficulty transition.
+	pub difficulty_hardfork_bound_divisor: U256,
+	/// Block on which there is no additional difficulty from the exponential bomb.
+	pub bomb_defuse_transition: u64,
+	/// Bad gas transition block number.
+	pub eip150_transition: u64,
 }
 
 impl From<ethjson::spec::EthashParams> for EthashParams {
@@ -54,13 +69,18 @@ impl From<ethjson::spec::EthashParams> for EthashParams {
 			gas_limit_bound_divisor: p.gas_limit_bound_divisor.into(),
 			minimum_difficulty: p.minimum_difficulty.into(),
 			difficulty_bound_divisor: p.difficulty_bound_divisor.into(),
+			difficulty_increment_divisor: p.difficulty_increment_divisor.map_or(10, Into::into),
 			duration_limit: p.duration_limit.into(),
 			block_reward: p.block_reward.into(),
 			registrar: p.registrar.map_or_else(Address::new, Into::into),
-			frontier_compatibility_mode_limit: p.frontier_compatibility_mode_limit.map_or(0, Into::into),
+			homestead_transition: p.homestead_transition.map_or(0, Into::into),
 			dao_hardfork_transition: p.dao_hardfork_transition.map_or(0x7fffffffffffffff, Into::into),
 			dao_hardfork_beneficiary: p.dao_hardfork_beneficiary.map_or_else(Address::new, Into::into),
 			dao_hardfork_accounts: p.dao_hardfork_accounts.unwrap_or_else(Vec::new).into_iter().map(Into::into).collect(),
+			difficulty_hardfork_transition: p.difficulty_hardfork_transition.map_or(0x7fffffffffffffff, Into::into),
+			difficulty_hardfork_bound_divisor: p.difficulty_hardfork_bound_divisor.map_or(p.difficulty_bound_divisor.into(), Into::into),
+			bomb_defuse_transition: p.bomb_defuse_transition.map_or(0x7fffffffffffffff, Into::into),
+			eip150_transition: p.eip150_transition.map_or(0, Into::into),
 		}
 	}
 }
@@ -105,12 +125,14 @@ impl Engine for Ethash {
 	}
 
 	fn schedule(&self, env_info: &EnvInfo) -> Schedule {
-		trace!(target: "client", "Creating schedule. fCML={}", self.ethash_params.frontier_compatibility_mode_limit);
+		trace!(target: "client", "Creating schedule. fCML={}, bGCML={}", self.ethash_params.homestead_transition, self.ethash_params.eip150_transition);
 
-		if env_info.number < self.ethash_params.frontier_compatibility_mode_limit {
+		if env_info.number < self.ethash_params.homestead_transition {
 			Schedule::new_frontier()
-		} else {
+		} else if env_info.number < self.ethash_params.eip150_transition {
 			Schedule::new_homestead()
+		} else {
+			Schedule::new_homestead_gas_fix()
 		}
 	}
 
@@ -168,6 +190,10 @@ impl Engine for Ethash {
 			fields.state.add_balance(u.author(), &(reward * U256::from(8 + u.number() - current_number) / U256::from(8)));
 		}
 
+		// Commit state so that we can actually figure out the state root.
+		if let Err(e) = fields.state.commit() {
+			warn!("Encountered error on state commit: {}", e);
+		}
 	}
 
 	fn verify_block_basic(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> {
@@ -217,6 +243,7 @@ impl Engine for Ethash {
 		let result = self.pow.compute_light(header.number() as u64, &Ethash::to_ethash(header.bare_hash()), header.nonce().low_u64());
 		let mix = Ethash::from_ethash(result.mix_hash);
 		let difficulty = Ethash::boundary_to_difficulty(&Ethash::from_ethash(result.value));
+		trace!(target: "miner", "num: {}, seed: {}, h: {}, non: {}, mix: {}, res: {}" , header.number() as u64, Ethash::from_ethash(slow_get_seedhash(header.number() as u64)), header.bare_hash(), header.nonce().low_u64(), Ethash::from_ethash(result.mix_hash), Ethash::from_ethash(result.value));
 		if mix != header.mix_hash() {
 			return Err(From::from(BlockError::MismatchedH256SealElement(Mismatch { expected: mix, found: header.mix_hash() })));
 		}
@@ -247,7 +274,7 @@ impl Engine for Ethash {
 	}
 
 	fn verify_transaction_basic(&self, t: &SignedTransaction, header: &Header) -> result::Result<(), Error> {
-		if header.number() >= self.ethash_params.frontier_compatibility_mode_limit {
+		if header.number() >= self.ethash_params.homestead_transition {
 			try!(t.check_low_s());
 		}
 		Ok(())
@@ -267,9 +294,13 @@ impl Ethash {
 		}
 
 		let min_difficulty = self.ethash_params.minimum_difficulty;
-		let difficulty_bound_divisor = self.ethash_params.difficulty_bound_divisor;
+		let difficulty_hardfork = header.number() >= self.ethash_params.difficulty_hardfork_transition;
+		let difficulty_bound_divisor = match difficulty_hardfork {
+			true => self.ethash_params.difficulty_hardfork_bound_divisor,
+			false => self.ethash_params.difficulty_bound_divisor,
+		};
 		let duration_limit = self.ethash_params.duration_limit;
-		let frontier_limit = self.ethash_params.frontier_compatibility_mode_limit;
+		let frontier_limit = self.ethash_params.homestead_transition;
 
 		let mut target = if header.number() < frontier_limit {
 			if header.timestamp() >= parent.timestamp() + duration_limit {
@@ -281,17 +312,19 @@ impl Ethash {
 		else {
 			trace!(target: "ethash", "Calculating difficulty parent.difficulty={}, header.timestamp={}, parent.timestamp={}", parent.difficulty(), header.timestamp(), parent.timestamp());
 			//block_diff = parent_diff + parent_diff // 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99)
-			let diff_inc = (header.timestamp() - parent.timestamp()) / 10;
+			let diff_inc = (header.timestamp() - parent.timestamp()) / self.ethash_params.difficulty_increment_divisor;
 			if diff_inc <= 1 {
-				parent.difficulty().clone() + parent.difficulty().clone() / From::from(2048) * From::from(1 - diff_inc)
+				parent.difficulty().clone() + parent.difficulty().clone() / From::from(difficulty_bound_divisor) * From::from(1 - diff_inc)
 			} else {
-				parent.difficulty().clone() - parent.difficulty().clone() / From::from(2048) * From::from(min(diff_inc - 1, 99))
+				parent.difficulty().clone() - parent.difficulty().clone() / From::from(difficulty_bound_divisor) * From::from(min(diff_inc - 1, 99))
 			}
 		};
 		target = max(min_difficulty, target);
-		let period = ((parent.number() + 1) / EXP_DIFF_PERIOD) as usize;
+		if header.number() < self.ethash_params.bomb_defuse_transition {
-		if period > 1 {
+			let period = ((parent.number() + 1) / EXP_DIFF_PERIOD) as usize;
-			target = max(min_difficulty, target + (U256::from(1) << (period - 2)));
+			if period > 1 {
+				target = max(min_difficulty, target + (U256::from(1) << (period - 2)));
+			}
 		}
 		target
 	}
@@ -343,9 +376,12 @@ impl Header {
 
 #[cfg(test)]
 mod tests {
-	use common::*;
+	use util::*;
 	use block::*;
 	use tests::helpers::*;
+	use env_info::EnvInfo;
+	use error::{BlockError, Error};
+	use header::Header;
 	use super::super::new_morden;
 	use super::Ethash;
 	use rlp;
@@ -355,9 +391,9 @@ mod tests {
 		let spec = new_morden();
 		let engine = &*spec.engine;
 		let genesis_header = spec.genesis_header();
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close();
@@ -369,9 +405,9 @@ mod tests {
 		let spec = new_morden();
 		let engine = &*spec.engine;
 		let genesis_header = spec.genesis_header();
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let mut b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let mut uncle = Header::new();

ethcore/src/ethereum/mod.rs

@@ -42,14 +42,20 @@ pub fn new_frontier() -> Spec { load(include_bytes!("../../res/ethereum/frontier
 /// Create a new Frontier mainnet chain spec without the DAO hardfork.
 pub fn new_classic() -> Spec { load(include_bytes!("../../res/ethereum/classic.json")) }
 
+/// Create a new Frontier mainnet chain spec without the DAO hardfork.
+pub fn new_expanse() -> Spec { load(include_bytes!("../../res/ethereum/expanse.json")) }
+
 /// Create a new Frontier chain spec as though it never changes to Homestead.
 pub fn new_frontier_test() -> Spec { load(include_bytes!("../../res/ethereum/frontier_test.json")) }
 
 /// Create a new Homestead chain spec as though it never changed from Frontier.
 pub fn new_homestead_test() -> Spec { load(include_bytes!("../../res/ethereum/homestead_test.json")) }
 
+/// Create a new Homestead-EIP150 chain spec as though it never changed from Homestead/Frontier.
+pub fn new_eip150_test() -> Spec { load(include_bytes!("../../res/ethereum/eip150_test.json")) }
+
 /// Create a new Frontier/Homestead/DAO chain spec with transition points at #5 and #8.
-pub fn new_daohardfork_test() -> Spec { load(include_bytes!("../../res/ethereum/daohardfork_test.json")) }
+pub fn new_transition_test() -> Spec { load(include_bytes!("../../res/ethereum/transition_test.json")) }
 
 /// Create a new Frontier main net chain spec without genesis accounts.
 pub fn new_mainnet_like() -> Spec { load(include_bytes!("../../res/ethereum/frontier_like_test.json")) }
@@ -59,19 +65,20 @@ pub fn new_morden() -> Spec { load(include_bytes!("../../res/ethereum/morden.jso
 
 #[cfg(test)]
 mod tests {
-	use common::*;
+	use util::*;
 	use state::*;
 	use super::*;
 	use tests::helpers::*;
+	use views::BlockView;
 
 	#[test]
 	fn ensure_db_good() {
 		let spec = new_morden();
 		let engine = &spec.engine;
 		let genesis_header = spec.genesis_header();
-		let mut db_result = get_temp_journal_db();
+		let mut db_result = get_temp_state_db();
 		let mut db = db_result.take();
-		spec.ensure_db_good(db.as_hashdb_mut()).unwrap();
+		spec.ensure_db_good(&mut db).unwrap();
 		let s = State::from_existing(db, genesis_header.state_root().clone(), engine.account_start_nonce(), Default::default()).unwrap();
 		assert_eq!(s.balance(&"0000000000000000000000000000000000000001".into()), 1u64.into());
 		assert_eq!(s.balance(&"0000000000000000000000000000000000000002".into()), 1u64.into());

ethcore/src/evm/benches/mod.rs

@@ -24,7 +24,8 @@ extern crate test;
 
 use self::test::{Bencher, black_box};
 
-use common::*;
+use util::*;
+use action_params::ActionParams;
 use evm::{self, Factory, VMType};
 use evm::tests::FakeExt;
 

ethcore/src/evm/ext.rs

@@ -81,7 +81,7 @@ pub trait Ext {
 	) -> MessageCallResult;
 
 	/// Returns code at given address
-	fn extcode(&self, address: &Address) -> Bytes;
+	fn extcode(&self, address: &Address) -> Arc<Bytes>;
 
 	/// Returns code size at given address
 	fn extcodesize(&self, address: &Address) -> usize;

ethcore/src/evm/factory.rs

@@ -18,8 +18,10 @@
 //!
 //! TODO: consider spliting it into two separate files.
 use std::fmt;
+use std::sync::Arc;
 use evm::Evm;
 use util::{U256, Uint};
+use super::interpreter::SharedCache;
 
 #[derive(Debug, PartialEq, Clone)]
 /// Type of EVM to use.
@@ -82,7 +84,8 @@ impl VMType {
 /// Evm factory. Creates appropriate Evm.
 #[derive(Clone)]
 pub struct Factory {
-	evm: VMType
+	evm: VMType,
+	evm_cache: Arc<SharedCache>,
 }
 
 impl Factory {
@@ -95,9 +98,9 @@ impl Factory {
 				Box::new(super::jit::JitEvm::default())
 			},
 			VMType::Interpreter => if Self::can_fit_in_usize(gas) {
-				Box::new(super::interpreter::Interpreter::<usize>::default())
+				Box::new(super::interpreter::Interpreter::<usize>::new(self.evm_cache.clone()))
 			} else {
-				Box::new(super::interpreter::Interpreter::<U256>::default())
+				Box::new(super::interpreter::Interpreter::<U256>::new(self.evm_cache.clone()))
 			}
 		}
 	}
@@ -108,17 +111,19 @@ impl Factory {
 	pub fn create(&self, gas: U256) -> Box<Evm> {
 		match self.evm {
 			VMType::Interpreter => if Self::can_fit_in_usize(gas) {
-				Box::new(super::interpreter::Interpreter::<usize>::default())
+				Box::new(super::interpreter::Interpreter::<usize>::new(self.evm_cache.clone()))
 			} else {
-				Box::new(super::interpreter::Interpreter::<U256>::default())
+				Box::new(super::interpreter::Interpreter::<U256>::new(self.evm_cache.clone()))
 			}
 		}
 	}
 
-	/// Create new instance of specific `VMType` factory
+	/// Create new instance of specific `VMType` factory, with a size in bytes
-	pub fn new(evm: VMType) -> Self {
+	/// for caching jump destinations.
+	pub fn new(evm: VMType, cache_size: usize) -> Self {
 		Factory {
-			evm: evm
+			evm: evm,
+			evm_cache: Arc::new(SharedCache::new(cache_size)),
 		}
 	}
 
@@ -132,7 +137,8 @@ impl Default for Factory {
 	#[cfg(all(feature = "jit", not(test)))]
 	fn default() -> Factory {
 		Factory {
-			evm: VMType::Jit
+			evm: VMType::Jit,
+			evm_cache: Arc::new(SharedCache::default()),
 		}
 	}
 
@@ -140,7 +146,8 @@ impl Default for Factory {
 	#[cfg(any(not(feature = "jit"), test))]
 	fn default() -> Factory {
 		Factory {
-			evm: VMType::Interpreter
+			evm: VMType::Interpreter,
+			evm_cache: Arc::new(SharedCache::default()),
 		}
 	}
 }
@@ -158,22 +165,22 @@ macro_rules! evm_test(
 		#[ignore]
 		#[cfg(feature = "jit")]
 		fn $name_jit() {
-			$name_test(Factory::new(VMType::Jit));
+			$name_test(Factory::new(VMType::Jit, 1024 * 32));
 		}
 		#[test]
 		fn $name_int() {
-			$name_test(Factory::new(VMType::Interpreter));
+			$name_test(Factory::new(VMType::Interpreter, 1024 * 32));
 		}
 	};
 	($name_test: ident: $name_jit: ident, $name_int: ident) => {
 		#[test]
 		#[cfg(feature = "jit")]
 		fn $name_jit() {
-			$name_test(Factory::new(VMType::Jit));
+			$name_test(Factory::new(VMType::Jit, 1024 * 32));
 		}
 		#[test]
 		fn $name_int() {
-			$name_test(Factory::new(VMType::Interpreter));
+			$name_test(Factory::new(VMType::Interpreter, 1024 * 32));
 		}
 	}
 );
@@ -187,13 +194,13 @@ macro_rules! evm_test_ignore(
 		#[cfg(feature = "jit")]
 		#[cfg(feature = "ignored-tests")]
 		fn $name_jit() {
-			$name_test(Factory::new(VMType::Jit));
+			$name_test(Factory::new(VMType::Jit, 1024 * 32));
 		}
 		#[test]
 		#[ignore]
 		#[cfg(feature = "ignored-tests")]
 		fn $name_int() {
-			$name_test(Factory::new(VMType::Interpreter));
+			$name_test(Factory::new(VMType::Interpreter, 1024 * 32));
 		}
 	}
 );

ethcore/src/evm/interpreter/gasometer.rs

@@ -14,11 +14,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use common::*;
+use util::*;
 use super::u256_to_address;
 use evm::{self, CostType};
 use evm::instructions::{self, Instruction, InstructionInfo};
 use evm::interpreter::stack::Stack;
+use evm::schedule::Schedule;
 
 macro_rules! overflowing {
 	($x: expr) => {{
@@ -31,7 +32,7 @@ macro_rules! overflowing {
 #[cfg_attr(feature="dev", allow(enum_variant_names))]
 enum InstructionCost<Cost: CostType> {
 	Gas(Cost),
-	GasMem(Cost, Cost),
+	GasMem(Cost, Cost, Option<Cost>),
 	GasMemCopy(Cost, Cost, Cost)
 }
 
@@ -56,7 +57,37 @@ impl<Gas: CostType> Gasometer<Gas> {
 		}
 	}
 
+	/// How much gas is provided to a CALL/CREATE, given that we need to deduct `needed` for this operation
+	/// and that we `requested` some.
+	pub fn gas_provided(&self, schedule: &Schedule, needed: Gas, requested: Option<evm::Result<Gas>>) -> evm::Result<Gas> {
+		match schedule.sub_gas_cap_divisor {
+			Some(cap_divisor) if self.current_gas >= needed => {
+				let gas_remaining = self.current_gas - needed;
+				let max_gas_provided = gas_remaining - gas_remaining / Gas::from(cap_divisor);
+				if let Some(Ok(r)) = requested {
+					Ok(min(r, max_gas_provided))
+				} else {
+					Ok(max_gas_provided)
+				}
+			},
+			_ => {
+				if let Some(r) = requested {
+					r
+				} else if self.current_gas >= needed {
+					Ok(self.current_gas - needed)
+				} else {
+					Ok(0.into())
+				}
+			}
+		}
+	}
+
 	#[cfg_attr(feature="dev", allow(cyclomatic_complexity))]
+	/// Determine how much gas is used by the given instruction, given the machine's state.
+	///
+	/// We guarantee that the final element of the returned tuple (`provided`) will be `Some`
+	/// iff the `instruction` is one of `CREATE`, or any of the `CALL` variants. In this case,
+	/// it will be the amount of gas that the current context provides to the child context.
 	pub fn get_gas_cost_mem(
 		&mut self,
 		ext: &evm::Ext,
@@ -64,7 +95,7 @@ impl<Gas: CostType> Gasometer<Gas> {
 		info: &InstructionInfo,
 		stack: &Stack<U256>,
 		current_mem_size: usize,
-	) -> evm::Result<(Gas, Gas, usize)> {
+	) -> evm::Result<(Gas, Gas, usize, Option<Gas>)> {
 		let schedule = ext.schedule();
 		let tier = instructions::get_tier_idx(info.tier);
 		let default_gas = Gas::from(schedule.tier_step_gas[tier]);
@@ -90,26 +121,42 @@ impl<Gas: CostType> Gasometer<Gas> {
 			instructions::SLOAD => {
 				InstructionCost::Gas(Gas::from(schedule.sload_gas))
 			},
+			instructions::BALANCE => {
+				InstructionCost::Gas(Gas::from(schedule.balance_gas))
+			},
+			instructions::EXTCODESIZE => {
+				InstructionCost::Gas(Gas::from(schedule.extcodesize_gas))
+			},
+			instructions::SUICIDE => {
+				let mut gas = Gas::from(schedule.suicide_gas);
+
+				let address = u256_to_address(stack.peek(0));
+				if !ext.exists(&address) {
+					gas = overflowing!(gas.overflow_add(schedule.suicide_to_new_account_cost.into()));
+				}
+
+				InstructionCost::Gas(gas)
+			},
 			instructions::MSTORE | instructions::MLOAD => {
-				InstructionCost::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 32)))
+				InstructionCost::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 32)), None)
 			},
 			instructions::MSTORE8 => {
-				InstructionCost::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 1)))
+				InstructionCost::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 1)), None)
 			},
 			instructions::RETURN => {
-				InstructionCost::GasMem(default_gas, try!(mem_needed(stack.peek(0), stack.peek(1))))
+				InstructionCost::GasMem(default_gas, try!(mem_needed(stack.peek(0), stack.peek(1))), None)
 			},
 			instructions::SHA3 => {
 				let w = overflowing!(add_gas_usize(try!(Gas::from_u256(*stack.peek(1))), 31));
 				let words = w >> 5;
 				let gas = Gas::from(schedule.sha3_gas) + (Gas::from(schedule.sha3_word_gas) * words);
-				InstructionCost::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))))
+				InstructionCost::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))), None)
 			},
 			instructions::CALLDATACOPY | instructions::CODECOPY => {
 				InstructionCost::GasMemCopy(default_gas, try!(mem_needed(stack.peek(0), stack.peek(2))), try!(Gas::from_u256(*stack.peek(2))))
 			},
 			instructions::EXTCODECOPY => {
-				InstructionCost::GasMemCopy(default_gas, try!(mem_needed(stack.peek(1), stack.peek(3))), try!(Gas::from_u256(*stack.peek(3))))
+				InstructionCost::GasMemCopy(schedule.extcodecopy_base_gas.into(), try!(mem_needed(stack.peek(1), stack.peek(3))), try!(Gas::from_u256(*stack.peek(3))))
 			},
 			instructions::LOG0...instructions::LOG4 => {
 				let no_of_topics = instructions::get_log_topics(instruction);
@@ -117,10 +164,10 @@ impl<Gas: CostType> Gasometer<Gas> {
 
 				let data_gas = overflowing!(try!(Gas::from_u256(*stack.peek(1))).overflow_mul(Gas::from(schedule.log_data_gas)));
 				let gas = overflowing!(data_gas.overflow_add(Gas::from(log_gas)));
-				InstructionCost::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))))
+				InstructionCost::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))), None)
 			},
 			instructions::CALL | instructions::CALLCODE => {
-				let mut gas  = overflowing!(add_gas_usize(try!(Gas::from_u256(*stack.peek(0))), schedule.call_gas));
+				let mut gas = Gas::from(schedule.call_gas);
 				let mem = cmp::max(
 					try!(mem_needed(stack.peek(5), stack.peek(6))),
 					try!(mem_needed(stack.peek(3), stack.peek(4)))
@@ -129,27 +176,49 @@ impl<Gas: CostType> Gasometer<Gas> {
 				let address = u256_to_address(stack.peek(1));
 
 				if instruction == instructions::CALL && !ext.exists(&address) {
-					gas = overflowing!(gas.overflow_add(Gas::from(schedule.call_new_account_gas)));
+					gas = overflowing!(gas.overflow_add(schedule.call_new_account_gas.into()));
 				};
 
 				if !stack.peek(2).is_zero() {
-					gas = overflowing!(gas.overflow_add(Gas::from(schedule.call_value_transfer_gas)));
+					gas = overflowing!(gas.overflow_add(schedule.call_value_transfer_gas.into()));
 				};
 
-				InstructionCost::GasMem(gas,mem)
+				// TODO: refactor to avoid duplicate calculation here and later on.
+				let (mem_gas_cost, _, _) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem));
+				let cost_so_far = overflowing!(gas.overflow_add(mem_gas_cost.into()));
+				let requested = Gas::from_u256(*stack.peek(0));
+				let provided = try!(self.gas_provided(schedule, cost_so_far, Some(requested)));
+				gas = overflowing!(gas.overflow_add(provided));
+
+				InstructionCost::GasMem(gas, mem, Some(provided))
 			},
 			instructions::DELEGATECALL => {
-				let gas = overflowing!(add_gas_usize(try!(Gas::from_u256(*stack.peek(0))), schedule.call_gas));
+				let mut gas = Gas::from(schedule.call_gas);
 				let mem = cmp::max(
 					try!(mem_needed(stack.peek(4), stack.peek(5))),
 					try!(mem_needed(stack.peek(2), stack.peek(3)))
 				);
-				InstructionCost::GasMem(gas, mem)
+
+				// TODO: refactor to avoid duplicate calculation here and later on.
+				let (mem_gas_cost, _, _) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem));
+				let cost_so_far = overflowing!(gas.overflow_add(mem_gas_cost.into()));
+				let requested = Gas::from_u256(*stack.peek(0));
+				let provided = try!(self.gas_provided(schedule, cost_so_far, Some(requested)));
+				gas = overflowing!(gas.overflow_add(provided));
+
+				InstructionCost::GasMem(gas, mem, Some(provided))
 			},
 			instructions::CREATE => {
-				let gas = Gas::from(schedule.create_gas);
+				let mut gas = Gas::from(schedule.create_gas);
 				let mem = try!(mem_needed(stack.peek(1), stack.peek(2)));
-				InstructionCost::GasMem(gas, mem)
+
+				// TODO: refactor to avoid duplicate calculation here and later on.
+				let (mem_gas_cost, _, _) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem));
+				let cost_so_far = overflowing!(gas.overflow_add(mem_gas_cost.into()));
+				let provided = try!(self.gas_provided(schedule, cost_so_far, None));
+				gas = overflowing!(gas.overflow_add(provided));
+
+				InstructionCost::GasMem(gas, mem, Some(provided))
 			},
 			instructions::EXP => {
 				let expon = stack.peek(1);
@@ -157,17 +226,17 @@ impl<Gas: CostType> Gasometer<Gas> {
 				let gas = Gas::from(schedule.exp_gas + schedule.exp_byte_gas * bytes);
 				InstructionCost::Gas(gas)
 			},
-			_ => InstructionCost::Gas(default_gas)
+			_ => InstructionCost::Gas(default_gas),
 		};
 
 		match cost {
 			InstructionCost::Gas(gas) => {
-				Ok((gas, self.current_mem_gas, 0))
+				Ok((gas, self.current_mem_gas, 0, None))
 			},
-			InstructionCost::GasMem(gas, mem_size) => {
+			InstructionCost::GasMem(gas, mem_size, provided) => {
 				let (mem_gas_cost, new_mem_gas, new_mem_size) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem_size));
 				let gas = overflowing!(gas.overflow_add(mem_gas_cost));
-				Ok((gas, new_mem_gas, new_mem_size))
+				Ok((gas, new_mem_gas, new_mem_size, provided))
 			},
 			InstructionCost::GasMemCopy(gas, mem_size, copy) => {
 				let (mem_gas_cost, new_mem_gas, new_mem_size) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem_size));
@@ -175,7 +244,7 @@ impl<Gas: CostType> Gasometer<Gas> {
 				let copy_gas = Gas::from(schedule.copy_gas) * copy;
 				let gas = overflowing!(gas.overflow_add(copy_gas));
 				let gas = overflowing!(gas.overflow_add(mem_gas_cost));
-				Ok((gas, new_mem_gas, new_mem_size))
+				Ok((gas, new_mem_gas, new_mem_size, None))
 			}
 		}
 	}

ethcore/src/evm/interpreter/informant.rs

@@ -0,0 +1,164 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+pub use self::inner::*;
+
+#[macro_use]
+#[cfg(not(feature = "evm-debug"))]
+mod inner {
+	macro_rules! evm_debug {
+		($x: expr) => {}
+	}
+
+	pub struct EvmInformant;
+	impl EvmInformant {
+		pub fn new(_depth: usize) -> Self {
+			EvmInformant {}
+		}
+		pub fn done(&mut self) {}
+	}
+}
+
+#[macro_use]
+#[cfg(feature = "evm-debug")]
+mod inner {
+	use std::iter;
+	use std::collections::HashMap;
+	use std::time::{Instant, Duration};
+
+	use evm::interpreter::stack::Stack;
+	use evm::instructions::{Instruction, InstructionInfo, INSTRUCTIONS};
+	use evm::{CostType};
+
+	use util::U256;
+
+	macro_rules! evm_debug {
+		($x: expr) => {
+			$x
+		}
+	}
+
+	fn print(data: String) {
+		if cfg!(feature = "evm-debug-tests") {
+			println!("{}", data);
+		} else {
+			debug!(target: "evm", "{}", data);
+		}
+	}
+
+	pub struct EvmInformant {
+		spacing: String,
+		last_instruction: Instant,
+		stats: HashMap<Instruction, Stats>,
+	}
+
+	impl EvmInformant {
+
+		fn color(instruction: Instruction, name: &str) -> String {
+			let c = instruction as usize % 6;
+			let colors = [31, 34, 33, 32, 35, 36];
+			format!("\x1B[1;{}m{}\x1B[0m", colors[c], name)
+		}
+
+		fn as_micro(duration: &Duration) -> u64 {
+			let mut sec = duration.as_secs();
+			let subsec = duration.subsec_nanos() as u64;
+			sec = sec.saturating_mul(1_000_000u64);
+			sec += subsec / 1_000;
+			sec
+		}
+
+		pub fn new(depth: usize) -> Self {
+			EvmInformant {
+				spacing: iter::repeat(".").take(depth).collect(),
+				last_instruction: Instant::now(),
+				stats: HashMap::new(),
+			}
+		}
+
+		pub fn before_instruction<Cost: CostType>(&mut self, pc: usize, instruction: Instruction, info: &InstructionInfo, current_gas: &Cost, stack: &Stack<U256>) {
+			let time = self.last_instruction.elapsed();
+			self.last_instruction = Instant::now();
+
+			print(format!("{}[0x{:<3x}][{:>19}(0x{:<2x}) Gas Left: {:6?} (Previous took: {:10}μs)",
+				&self.spacing,
+				pc,
+				Self::color(instruction, info.name),
+				instruction,
+				current_gas,
+				Self::as_micro(&time),
+			));
+
+			if info.args > 0 {
+				for (idx, item) in stack.peek_top(info.args).iter().enumerate() {
+					print(format!("{}       |{:2}: {:?}", self.spacing, idx, item));
+				}
+			}
+		}
+
+		pub fn after_instruction(&mut self, instruction: Instruction) {
+			let mut stats = self.stats.entry(instruction).or_insert_with(|| Stats::default());
+			let took = self.last_instruction.elapsed();
+			stats.note(took);
+		}
+
+		pub fn done(&mut self) {
+			// Print out stats
+			let infos = &*INSTRUCTIONS;
+
+			let mut stats: Vec<(_,_)> = self.stats.drain().collect();
+			stats.sort_by(|ref a, ref b| b.1.avg().cmp(&a.1.avg()));
+
+			print(format!("\n{}-------OPCODE STATS:", self.spacing));
+			for (instruction, stats) in stats.into_iter() {
+				let info = infos[instruction as usize];
+				print(format!("{}-------{:>19}(0x{:<2x}) count: {:4}, avg: {:10}μs",
+					self.spacing,
+					Self::color(instruction, info.name),
+					instruction,
+					stats.count,
+					stats.avg(),
+				));
+			}
+		}
+
+	}
+
+	struct Stats {
+		count: u64,
+		total_duration: Duration,
+	}
+
+	impl Default for Stats {
+		fn default() -> Self {
+			Stats {
+				count: 0,
+				total_duration: Duration::from_secs(0),
+			}
+		}
+	}
+
+	impl Stats {
+		fn note(&mut self, took: Duration) {
+			self.count += 1;
+			self.total_duration += took;
+		}
+
+		fn avg(&self) -> u64 {
+			EvmInformant::as_micro(&self.total_duration) / self.count
+		}
+	}
+}

ethcore/src/evm/interpreter/mod.rs

@@ -16,39 +16,26 @@
 
 //! Rust VM implementation
 
-#[cfg(not(feature = "evm-debug"))]
+#[macro_use]
-macro_rules! evm_debug {
+mod informant;
-	($x: expr) => {}
-}
-
-#[cfg(feature = "evm-debug")]
-macro_rules! evm_debug {
-	($x: expr) => {
-		$x
-	}
-}
-
 mod gasometer;
 mod stack;
 mod memory;
+mod shared_cache;
 
 use self::gasometer::Gasometer;
 use self::stack::{Stack, VecStack};
 use self::memory::Memory;
+pub use self::shared_cache::SharedCache;
 
 use std::marker::PhantomData;
-use common::*;
+use action_params::{ActionParams, ActionValue};
 use types::executed::CallType;
-use super::instructions::{self, Instruction, InstructionInfo};
+use evm::instructions::{self, Instruction, InstructionInfo};
 use evm::{self, MessageCallResult, ContractCreateResult, GasLeft, CostType};
 use bit_set::BitSet;
 
-#[cfg(feature = "evm-debug")]
+use util::*;
-fn color(instruction: Instruction, name: &'static str) -> String {
-	let c = instruction as usize % 6;
-	let colors = [31, 34, 33, 32, 35, 36];
-	format!("\x1B[1;{}m{}\x1B[0m", colors[c], name)
-}
 
 type CodePosition = usize;
 type ProgramCounter = usize;
@@ -72,6 +59,15 @@ struct CodeReader<'a> {
 
 #[cfg_attr(feature="dev", allow(len_without_is_empty))]
 impl<'a> CodeReader<'a> {
+
+	/// Create new code reader - starting at position 0.
+	fn new(code: &'a Bytes) -> Self {
+		CodeReader {
+			position: 0,
+			code: code,
+		}
+	}
+
 	/// Get `no_of_bytes` from code and convert to U256. Move PC
 	fn read(&mut self, no_of_bytes: usize) -> U256 {
 		let pos = self.position;
@@ -87,8 +83,6 @@ impl<'a> CodeReader<'a> {
 
 enum InstructionResult<Gas> {
 	Ok,
-	UseAllGas,
-	GasLeft(Gas),
 	UnusedGas(Gas),
 	JumpToPosition(U256),
 	// gas left, init_orf, init_size
@@ -98,9 +92,9 @@ enum InstructionResult<Gas> {
 
 
 /// Intepreter EVM implementation
-#[derive(Default)]
 pub struct Interpreter<Cost: CostType> {
 	mem: Vec<u8>,
+	cache: Arc<SharedCache>,
 	_type: PhantomData<Cost>,
 }
 
@@ -108,26 +102,25 @@ impl<Cost: CostType> evm::Evm for Interpreter<Cost> {
 	fn exec(&mut self, params: ActionParams, ext: &mut evm::Ext) -> evm::Result<GasLeft> {
 		self.mem.clear();
 
-		let code = &params.code.as_ref().unwrap();
+		let mut informant = informant::EvmInformant::new(ext.depth());
-		let valid_jump_destinations = self.find_jump_destinations(code);
+
+		let code = &params.code.as_ref().expect("exec always called with code; qed");
+		let valid_jump_destinations = self.cache.jump_destinations(&params.code_hash, code);
 
 		let mut gasometer = Gasometer::<Cost>::new(try!(Cost::from_u256(params.gas)));
 		let mut stack = VecStack::with_capacity(ext.schedule().stack_limit, U256::zero());
-		let mut reader = CodeReader {
+		let mut reader = CodeReader::new(code);
-			position: 0,
-			code: code
-		};
 		let infos = &*instructions::INSTRUCTIONS;
 
 		while reader.position < code.len() {
 			let instruction = code[reader.position];
 			reader.position += 1;
 
-			let info = infos[instruction as usize];
+			let info = &infos[instruction as usize];
-			try!(self.verify_instruction(ext, instruction, &info, &stack));
+			try!(self.verify_instruction(ext, instruction, info, &stack));
 
 			// Calculate gas cost
-			let (gas_cost, mem_gas, mem_size) = try!(gasometer.get_gas_cost_mem(ext, instruction, &info, &stack, self.mem.size()));
+			let (gas_cost, mem_gas, mem_size, provided) = try!(gasometer.get_gas_cost_mem(ext, instruction, info, &stack, self.mem.size()));
 			// TODO: make compile-time removable if too much of a performance hit.
 			let trace_executed = ext.trace_prepare_execute(reader.position - 1, instruction, &gas_cost.as_u256());
 
@@ -136,15 +129,7 @@ impl<Cost: CostType> evm::Evm for Interpreter<Cost> {
 			gasometer.current_mem_gas = mem_gas;
 			gasometer.current_gas = gasometer.current_gas - gas_cost;
 
-			evm_debug!({
+			evm_debug!({ informant.before_instruction(reader.position, instruction, info, &gasometer.current_gas, &stack) });
-				println!("[0x{:x}][{}(0x{:x}) Gas: {:?}\n  Gas Before: {:?}",
-					reader.position,
-					color(instruction, info.name),
-					instruction,
-					gas_cost,
-					gasometer.current_gas + gas_cost
-				);
-			});
 
 			let (mem_written, store_written) = match trace_executed {
 				true => (Self::mem_written(instruction, &stack), Self::store_written(instruction, &stack)),
@@ -153,41 +138,47 @@ impl<Cost: CostType> evm::Evm for Interpreter<Cost> {
 
 			// Execute instruction
 			let result = try!(self.exec_instruction(
-				gasometer.current_gas, &params, ext, instruction, &mut reader, &mut stack
+				gasometer.current_gas, &params, ext, instruction, &mut reader, &mut stack, provided
 			));
 
+			evm_debug!({ informant.after_instruction(instruction) });
+
+			if let InstructionResult::UnusedGas(ref gas) = result {
+				gasometer.current_gas = gasometer.current_gas + *gas;
+			}
+
 			if trace_executed {
 				ext.trace_executed(gasometer.current_gas.as_u256(), stack.peek_top(info.ret), mem_written.map(|(o, s)| (o, &(self.mem[o..(o + s)]))), store_written);
 			}
 
 			// Advance
 			match result {
-				InstructionResult::Ok => {},
-				InstructionResult::UnusedGas(gas) => {
-					gasometer.current_gas = gasometer.current_gas + gas;
-				},
-				InstructionResult::UseAllGas => {
-					gasometer.current_gas = Cost::from(0);
-				},
-				InstructionResult::GasLeft(gas_left) => {
-					gasometer.current_gas = gas_left;
-				},
 				InstructionResult::JumpToPosition(position) => {
 					let pos = try!(self.verify_jump(position, &valid_jump_destinations));
 					reader.position = pos;
 				},
 				InstructionResult::StopExecutionNeedsReturn(gas, off, size) => {
+					informant.done();
 					return Ok(GasLeft::NeedsReturn(gas.as_u256(), self.mem.read_slice(off, size)));
 				},
 				InstructionResult::StopExecution => break,
+				_ => {},
 			}
 		}
-
+		informant.done();
 		Ok(GasLeft::Known(gasometer.current_gas.as_u256()))
 	}
 }
 
 impl<Cost: CostType> Interpreter<Cost> {
+	/// Create a new `Interpreter` instance with shared cache.
+	pub fn new(cache: Arc<SharedCache>) -> Interpreter<Cost> {
+		Interpreter {
+			mem: Vec::new(),
+			cache: cache,
+			_type: PhantomData::default(),
+		}
+	}
 
 	fn verify_instruction(&self, ext: &evm::Ext, instruction: Instruction, info: &InstructionInfo, stack: &Stack<U256>) -> evm::Result<()> {
 		let schedule = ext.schedule();
@@ -254,7 +245,8 @@ impl<Cost: CostType> Interpreter<Cost> {
 		ext: &mut evm::Ext,
 		instruction: Instruction,
 		code: &mut CodeReader,
-		stack: &mut Stack<U256>
+		stack: &mut Stack<U256>,
+		provided: Option<Cost>
 	) -> evm::Result<InstructionResult<Cost>> {
 		match instruction {
 			instructions::JUMP => {
@@ -279,31 +271,32 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let endowment = stack.pop_back();
 				let init_off = stack.pop_back();
 				let init_size = stack.pop_back();
+				let create_gas = provided.expect("`provided` comes through Self::exec from `Gasometer::get_gas_cost_mem`; `gas_gas_mem_cost` guarantees `Some` when instruction is `CALL`/`CALLCODE`/`DELEGATECALL`/`CREATE`; this is `CREATE`; qed");
 
 				let contract_code = self.mem.read_slice(init_off, init_size);
 				let can_create = ext.balance(&params.address) >= endowment && ext.depth() < ext.schedule().max_depth;
 
 				if !can_create {
 					stack.push(U256::zero());
-					return Ok(InstructionResult::Ok);
+					return Ok(InstructionResult::UnusedGas(create_gas));
 				}
 
-				let create_result = ext.create(&gas.as_u256(), &endowment, contract_code);
+				let create_result = ext.create(&create_gas.as_u256(), &endowment, contract_code);
 				return match create_result {
 					ContractCreateResult::Created(address, gas_left) => {
 						stack.push(address_to_u256(address));
-						Ok(InstructionResult::GasLeft(Cost::from_u256(gas_left).expect("Gas left cannot be greater.")))
+						Ok(InstructionResult::UnusedGas(Cost::from_u256(gas_left).expect("Gas left cannot be greater.")))
 					},
 					ContractCreateResult::Failed => {
 						stack.push(U256::zero());
-						// TODO [todr] Should we just StopExecution here?
+						Ok(InstructionResult::Ok)
-						Ok(InstructionResult::UseAllGas)
 					}
 				};
 			},
 			instructions::CALL | instructions::CALLCODE | instructions::DELEGATECALL => {
 				assert!(ext.schedule().call_value_transfer_gas > ext.schedule().call_stipend, "overflow possible");
-				let call_gas = Cost::from_u256(stack.pop_back()).expect("Gas is already validated.");
+				stack.pop_back();
+				let call_gas = provided.expect("`provided` comes through Self::exec from `Gasometer::get_gas_cost_mem`; `gas_gas_mem_cost` guarantees `Some` when instruction is `CALL`/`CALLCODE`/`DELEGATECALL`/`CREATE`; this is one of `CALL`/`CALLCODE`/`DELEGATECALL`; qed");
 				let code_address = stack.pop_back();
 				let code_address = u256_to_address(&code_address);
 
@@ -321,17 +314,17 @@ impl<Cost: CostType> Interpreter<Cost> {
 				// Add stipend (only CALL|CALLCODE when value > 0)
 				let call_gas = call_gas + value.map_or_else(|| Cost::from(0), |val| match val.is_zero() {
 					false => Cost::from(ext.schedule().call_stipend),
-					true => Cost::from(0)
+					true => Cost::from(0),
 				});
 
 				// Get sender & receive addresses, check if we have balance
 				let (sender_address, receive_address, has_balance, call_type) = match instruction {
 					instructions::CALL => {
-						let has_balance = ext.balance(&params.address) >= value.unwrap();
+						let has_balance = ext.balance(&params.address) >= value.expect("value set for all but delegate call; qed");
 						(&params.address, &code_address, has_balance, CallType::Call)
 					},
 					instructions::CALLCODE => {
-						let has_balance = ext.balance(&params.address) >= value.unwrap();
+						let has_balance = ext.balance(&params.address) >= value.expect("value set for all but delegate call; qed");
 						(&params.address, &params.address, has_balance, CallType::CallCode)
 					},
 					instructions::DELEGATECALL => (&params.sender, &params.address, true, CallType::DelegateCall),
@@ -486,10 +479,10 @@ impl<Cost: CostType> Interpreter<Cost> {
 				stack.push(U256::from(len));
 			},
 			instructions::CALLDATACOPY => {
-				self.copy_data_to_memory(stack, &params.data.clone().unwrap_or_else(|| vec![]));
+				self.copy_data_to_memory(stack, params.data.as_ref().map_or_else(|| &[] as &[u8], |d| &*d as &[u8]));
 			},
 			instructions::CODECOPY => {
-				self.copy_data_to_memory(stack, &params.code.clone().unwrap_or_else(|| vec![]));
+				self.copy_data_to_memory(stack, params.code.as_ref().map_or_else(|| &[] as &[u8], |c| &**c as &[u8]));
 			},
 			instructions::EXTCODECOPY => {
 				let address = u256_to_address(&stack.pop_back());
@@ -790,23 +783,6 @@ impl<Cost: CostType> Interpreter<Cost> {
 		Ok(())
 	}
 
-	fn find_jump_destinations(&self, code: &[u8]) -> BitSet {
-		let mut jump_dests = BitSet::with_capacity(code.len());
-		let mut position = 0;
-
-		while position < code.len() {
-			let instruction = code[position];
-
-			if instruction == instructions::JUMPDEST {
-				jump_dests.insert(position);
-			} else if instructions::is_push(instruction) {
-				position += instructions::get_push_bytes(instruction);
-			}
-			position += 1;
-		}
-
-		jump_dests
-	}
 }
 
 fn get_and_reset_sign(value: U256) -> (U256, bool) {
@@ -833,15 +809,3 @@ fn address_to_u256(value: Address) -> U256 {
 	U256::from(&*H256::from(value))
 }
 
-#[test]
-fn test_find_jump_destinations() {
-	// given
-	let interpreter = Interpreter::<U256>::default();
-	let code = "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff5b01600055".from_hex().unwrap();
-
-	// when
-	let valid_jump_destinations = interpreter.find_jump_destinations(&code);
-
-	// then
-	assert!(valid_jump_destinations.contains(66));
-}

ethcore/src/evm/interpreter/shared_cache.rs

@@ -0,0 +1,125 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::sync::Arc;
+use lru_cache::LruCache;
+use util::{H256, Mutex};
+use util::sha3::*;
+use bit_set::BitSet;
+use super::super::instructions;
+
+const INITIAL_CAPACITY: usize = 32;
+const DEFAULT_CACHE_SIZE: usize = 4 * 1024 * 1024;
+
+/// Global cache for EVM interpreter
+pub struct SharedCache {
+	jump_destinations: Mutex<LruCache<H256, Arc<BitSet>>>,
+	max_size: usize,
+	cur_size: Mutex<usize>,
+}
+
+impl SharedCache {
+	/// Create a jump destinations cache with a maximum size in bytes
+	/// to cache.
+	pub fn new(max_size: usize) -> Self {
+		SharedCache {
+			jump_destinations: Mutex::new(LruCache::new(INITIAL_CAPACITY)),
+			max_size: max_size * 8, // dealing with bits here.
+			cur_size: Mutex::new(0),
+		}
+	}
+
+	/// Get jump destinations bitmap for a contract.
+	pub fn jump_destinations(&self, code_hash: &H256, code: &[u8]) -> Arc<BitSet> {
+		if code_hash == &SHA3_EMPTY {
+			return Self::find_jump_destinations(code);
+		}
+
+		if let Some(d) = self.jump_destinations.lock().get_mut(code_hash) {
+			return d.clone();
+		}
+
+		let d = Self::find_jump_destinations(code);
+
+		{
+			let mut cur_size = self.cur_size.lock();
+			*cur_size += d.capacity();
+
+			let mut jump_dests = self.jump_destinations.lock();
+			let cap = jump_dests.capacity();
+
+			// grow the cache as necessary; it operates on amount of items
+			// but we're working based on memory usage.
+			if jump_dests.len() == cap && *cur_size < self.max_size {
+				jump_dests.set_capacity(cap * 2);
+			}
+
+			// account for any element displaced from the cache.
+			if let Some(lru) = jump_dests.insert(code_hash.clone(), d.clone()) {
+				*cur_size -= lru.capacity();
+			}
+
+			// remove elements until we are below the memory target.
+			while *cur_size > self.max_size {
+				match jump_dests.remove_lru() {
+					Some((_, v)) => *cur_size -= v.capacity(),
+					_ => break,
+				}
+			}
+		}
+
+		d
+	}
+
+	fn find_jump_destinations(code: &[u8]) -> Arc<BitSet> {
+		let mut jump_dests = BitSet::with_capacity(code.len());
+		let mut position = 0;
+
+		while position < code.len() {
+			let instruction = code[position];
+
+			if instruction == instructions::JUMPDEST {
+				jump_dests.insert(position);
+			} else if instructions::is_push(instruction) {
+				position += instructions::get_push_bytes(instruction);
+			}
+			position += 1;
+		}
+
+		jump_dests.shrink_to_fit();
+		Arc::new(jump_dests)
+	}
+}
+
+impl Default for SharedCache {
+	fn default() -> Self {
+		SharedCache::new(DEFAULT_CACHE_SIZE)
+	}
+}
+
+
+#[test]
+fn test_find_jump_destinations() {
+	use util::FromHex;
+	// given
+	let code = "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff5b01600055".from_hex().unwrap();
+
+	// when
+	let valid_jump_destinations = SharedCache::find_jump_destinations(&code);
+
+	// then
+	assert!(valid_jump_destinations.contains(66));
+}

ethcore/src/evm/interpreter/stack.rs

@@ -34,7 +34,7 @@ pub trait Stack<T> {
 	/// Get number of elements on Stack
 	fn size(&self) -> usize;
 	/// Returns all data on stack.
-	fn peek_top(&mut self, no_of_elems: usize) -> &[T];
+	fn peek_top(&self, no_of_elems: usize) -> &[T];
 }
 
 pub struct VecStack<S> {
@@ -68,12 +68,7 @@ impl<S : fmt::Display> Stack<S> for VecStack<S> {
 	fn pop_back(&mut self) -> S {
 		let val = self.stack.pop();
 		match val {
-			Some(x) => {
+			Some(x) => x,
-				evm_debug!({
-					println!("   POP: {}", x)
-				});
-				x
-			},
 			None => panic!("Tried to pop from empty stack.")
 		}
 	}
@@ -88,9 +83,6 @@ impl<S : fmt::Display> Stack<S> for VecStack<S> {
 	}
 
 	fn push(&mut self, elem: S) {
-		evm_debug!({
-			println!("  PUSH: {}", elem)
-		});
 		self.stack.push(elem);
 	}
 
@@ -98,7 +90,7 @@ impl<S : fmt::Display> Stack<S> for VecStack<S> {
 		self.stack.len()
 	}
 
-	fn peek_top(&mut self, no_from_top: usize) -> &[S] {
+	fn peek_top(&self, no_from_top: usize) -> &[S] {
 		assert!(self.stack.len() >= no_from_top, "peek_top asked for more items than exist.");
 		&self.stack[self.stack.len() - no_from_top .. self.stack.len()]
 	}

ethcore/src/evm/jit.rs

@@ -15,7 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Just in time compiler execution environment.
-use common::*;
+use util::*;
 use evmjit;
 use evm::{self, GasLeft};
 use types::executed::CallType;
@@ -196,6 +196,7 @@ impl<'a> evmjit::Ext for ExtAdapter<'a> {
 				receive_address: *const evmjit::H256,
 				code_address: *const evmjit::H256,
 				transfer_value: *const evmjit::I256,
+				// We are ignoring apparent value - it's handled in externalities.
 				_apparent_value: *const evmjit::I256,
 				in_beg: *const u8,
 				in_size: u64,
@@ -208,12 +209,13 @@ impl<'a> evmjit::Ext for ExtAdapter<'a> {
 		let sender_address = unsafe { Address::from_jit(&*sender_address) };
 		let receive_address = unsafe { Address::from_jit(&*receive_address) };
 		let code_address = unsafe { Address::from_jit(&*code_address) };
-		// TODO Is it always safe in case of DELEGATE_CALL?
 		let transfer_value = unsafe { U256::from_jit(&*transfer_value) };
-		let value = Some(transfer_value);
 
 		// receive address and code address are the same in normal calls
 		let is_callcode = receive_address != code_address;
+		let is_delegatecall = is_callcode && sender_address != receive_address;
+
+		let value = if is_delegatecall { None } else { Some(transfer_value) };
 
 		if !is_callcode && !self.ext.exists(&code_address) {
 			gas_cost = gas_cost + U256::from(self.ext.schedule().call_new_account_gas);
@@ -242,10 +244,10 @@ impl<'a> evmjit::Ext for ExtAdapter<'a> {
 			}
 		}
 
-		// TODO [ToDr] Any way to detect DelegateCall?
+		let call_type = match (is_callcode, is_delegatecall) {
-		let call_type = match is_callcode {
+			(_, true) => CallType::DelegateCall,
-			true => CallType::CallCode,
+			(true, false) => CallType::CallCode,
-			false => CallType::Call,
+			(false, false) => CallType::Call,
 		};
 
 		match self.ext.call(
@@ -357,7 +359,7 @@ impl evm::Evm for JitEvm {
 		data.timestamp = ext.env_info().timestamp as i64;
 
 		self.context = Some(unsafe { evmjit::ContextHandle::new(data, schedule, &mut ext_handle) });
-		let mut context = self.context.as_mut().unwrap();
+		let mut context = self.context.as_mut().expect("context handle set on the prior line; qed");
 		let res = context.exec();
 
 		match res {

ethcore/src/evm/schedule.rs

@@ -80,6 +80,19 @@ pub struct Schedule {
 	pub tx_data_non_zero_gas: usize,
 	/// Gas price for copying memory
 	pub copy_gas: usize,
+	/// Price of EXTCODESIZE
+	pub extcodesize_gas: usize,
+	/// Base price of EXTCODECOPY
+	pub extcodecopy_base_gas: usize,
+	/// Price of BALANCE
+	pub balance_gas: usize,
+	/// Price of SUICIDE
+	pub suicide_gas: usize,
+	/// Amount of additional gas to pay when SUICIDE credits a non-existant account
+	pub suicide_to_new_account_cost: usize,
+	/// If Some(x): let limit = GAS * (x - 1) / x; let CALL's gas = min(requested, limit). let CREATE's gas = limit.
+	/// If None: let CALL's gas = (requested > GAS ? [OOG] : GAS). let CREATE's gas = GAS
+	pub sub_gas_cap_divisor: Option<usize>,
 }
 
 impl Schedule {
@@ -93,6 +106,49 @@ impl Schedule {
 		Self::new(true, true, 53000)
 	}
 
+	/// Schedule for the Homestead-era of the Ethereum main net.
+	pub fn new_homestead_gas_fix() -> Schedule {
+		Schedule{
+			exceptional_failed_code_deposit: true,
+			have_delegate_call: true,
+			stack_limit: 1024,
+			max_depth: 1024,
+			tier_step_gas: [0, 2, 3, 5, 8, 10, 20, 0],
+			exp_gas: 10,
+			exp_byte_gas: 10,
+			sha3_gas: 30,
+			sha3_word_gas: 6,
+			sload_gas: 200,
+			sstore_set_gas: 20000,
+			sstore_reset_gas: 5000,
+			sstore_refund_gas: 15000,
+			jumpdest_gas: 1,
+			log_gas: 375,
+			log_data_gas: 8,
+			log_topic_gas: 375,
+			create_gas: 32000,
+			call_gas: 700,
+			call_stipend: 2300,
+			call_value_transfer_gas: 9000,
+			call_new_account_gas: 25000,
+			suicide_refund_gas: 24000,
+			memory_gas: 3,
+			quad_coeff_div: 512,
+			create_data_gas: 200,
+			tx_gas: 21000,
+			tx_create_gas: 53000,
+			tx_data_zero_gas: 4,
+			tx_data_non_zero_gas: 68,
+			copy_gas: 3,
+			extcodesize_gas: 700,
+			extcodecopy_base_gas: 700,
+			balance_gas: 400,
+			suicide_gas: 5000,
+			suicide_to_new_account_cost: 25000,
+			sub_gas_cap_divisor: Some(64),
+		}
+	}
+
 	fn new(efcd: bool, hdc: bool, tcg: usize) -> Schedule {
 		Schedule{
 			exceptional_failed_code_deposit: efcd,
@@ -126,6 +182,12 @@ impl Schedule {
 			tx_data_zero_gas: 4,
 			tx_data_non_zero_gas: 68,
 			copy_gas: 3,
+			extcodesize_gas: 20,
+			extcodecopy_base_gas: 20,
+			balance_gas: 20,
+			suicide_gas: 0,
+			suicide_to_new_account_cost: 0,
+			sub_gas_cap_divisor: None,
 		}
 	}
 }

ethcore/src/evm/tests.rs

@@ -14,7 +14,9 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use common::*;
+use util::*;
+use action_params::{ActionParams, ActionValue};
+use env_info::EnvInfo;
 use types::executed::CallType;
 use evm::{self, Ext, Schedule, Factory, GasLeft, VMType, ContractCreateResult, MessageCallResult};
 use std::fmt::Debug;
@@ -49,7 +51,7 @@ pub struct FakeExt {
 	depth: usize,
 	store: HashMap<H256, H256>,
 	blockhashes: HashMap<U256, H256>,
-	codes: HashMap<Address, Bytes>,
+	codes: HashMap<Address, Arc<Bytes>>,
 	logs: Vec<FakeLogEntry>,
 	_suicides: HashSet<Address>,
 	info: EnvInfo,
@@ -136,12 +138,12 @@ impl Ext for FakeExt {
 		MessageCallResult::Success(*gas)
 	}
 
-	fn extcode(&self, address: &Address) -> Bytes {
+	fn extcode(&self, address: &Address) -> Arc<Bytes> {
-		self.codes.get(address).unwrap_or(&Bytes::new()).clone()
+		self.codes.get(address).unwrap_or(&Arc::new(Bytes::new())).clone()
 	}
 
 	fn extcodesize(&self, address: &Address) -> usize {
-		self.codes.get(address).map(|v| v.len()).unwrap_or(0)
+		self.codes.get(address).map_or(0, |c| c.len())
 	}
 
 	fn log(&mut self, topics: Vec<H256>, data: &[u8]) {
@@ -184,11 +186,11 @@ fn test_stack_underflow() {
 	let mut params = ActionParams::default();
 	params.address = address.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let err = {
-		let mut vm : Box<evm::Evm> = Box::new(super::interpreter::Interpreter::<usize>::default());
+		let mut vm : Box<evm::Evm> = Box::new(super::interpreter::Interpreter::<usize>::new(Arc::new(super::interpreter::SharedCache::default())));
 		test_finalize(vm.exec(params, &mut ext)).unwrap_err()
 	};
 
@@ -211,7 +213,7 @@ fn test_add(factory: super::Factory) {
 	let mut params = ActionParams::default();
 	params.address = address.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -231,7 +233,7 @@ fn test_sha3(factory: super::Factory) {
 	let mut params = ActionParams::default();
 	params.address = address.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -251,7 +253,7 @@ fn test_address(factory: super::Factory) {
 	let mut params = ActionParams::default();
 	params.address = address.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -273,7 +275,7 @@ fn test_origin(factory: super::Factory) {
 	params.address = address.clone();
 	params.origin = origin.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -295,7 +297,7 @@ fn test_sender(factory: super::Factory) {
 	params.address = address.clone();
 	params.sender = sender.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -329,9 +331,9 @@ fn test_extcodecopy(factory: super::Factory) {
 	params.address = address.clone();
 	params.sender = sender.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
-	ext.codes.insert(sender, sender_code);
+	ext.codes.insert(sender, Arc::new(sender_code));
 
 	let gas_left = {
 		let mut vm = factory.create(params.gas);
@@ -350,7 +352,7 @@ fn test_log_empty(factory: super::Factory) {
 	let mut params = ActionParams::default();
 	params.address = address.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -382,7 +384,7 @@ fn test_log_sender(factory: super::Factory) {
 	params.address = address.clone();
 	params.sender = sender.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -406,7 +408,7 @@ fn test_blockhash(factory: super::Factory) {
 	let mut params = ActionParams::default();
 	params.address = address.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 	ext.blockhashes.insert(U256::zero(), blockhash.clone());
 
@@ -428,7 +430,7 @@ fn test_calldataload(factory: super::Factory) {
 	let mut params = ActionParams::default();
 	params.address = address.clone();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	params.data = Some(data);
 	let mut ext = FakeExt::new();
 
@@ -449,7 +451,7 @@ fn test_author(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 	ext.info.author = author;
 
@@ -469,7 +471,7 @@ fn test_timestamp(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 	ext.info.timestamp = timestamp;
 
@@ -489,7 +491,7 @@ fn test_number(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 	ext.info.number = number;
 
@@ -509,7 +511,7 @@ fn test_difficulty(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 	ext.info.difficulty = difficulty;
 
@@ -529,7 +531,7 @@ fn test_gas_limit(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 	ext.info.gas_limit = gas_limit;
 
@@ -548,7 +550,7 @@ fn test_mul(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -566,7 +568,7 @@ fn test_sub(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -584,7 +586,7 @@ fn test_div(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -602,7 +604,7 @@ fn test_div_zero(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -620,7 +622,7 @@ fn test_mod(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -639,7 +641,7 @@ fn test_smod(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -658,7 +660,7 @@ fn test_sdiv(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -677,7 +679,7 @@ fn test_exp(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -697,7 +699,7 @@ fn test_comparison(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -718,7 +720,7 @@ fn test_signed_comparison(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -739,7 +741,7 @@ fn test_bitops(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(150_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -762,7 +764,7 @@ fn test_addmod_mulmod(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -783,7 +785,7 @@ fn test_byte(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -802,7 +804,7 @@ fn test_signextend(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -817,12 +819,12 @@ fn test_signextend(factory: super::Factory) {
 
 #[test] // JIT just returns out of gas
 fn test_badinstruction_int() {
-	let factory = super::Factory::new(VMType::Interpreter);
+	let factory = super::Factory::new(VMType::Interpreter, 1024 * 32);
 	let code = "af".from_hex().unwrap();
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let err = {
@@ -842,7 +844,7 @@ fn test_pop(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -862,7 +864,7 @@ fn test_extops(factory: super::Factory) {
 	params.gas = U256::from(150_000);
 	params.gas_price = U256::from(0x32);
 	params.value = ActionValue::Transfer(U256::from(0x99));
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -885,7 +887,7 @@ fn test_jumps(factory: super::Factory) {
 
 	let mut params = ActionParams::default();
 	params.gas = U256::from(150_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	let mut ext = FakeExt::new();
 
 	let gas_left = {
@@ -908,7 +910,7 @@ fn test_calls(factory: super::Factory) {
 	let code_address = Address::from(0x998);
 	let mut params = ActionParams::default();
 	params.gas = U256::from(150_000);
-	params.code = Some(code);
+	params.code = Some(Arc::new(code));
 	params.address = address.clone();
 	let mut ext = FakeExt::new();
 	ext.balances = {

ethcore/src/executive.rs

@@ -15,20 +15,24 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Transaction Execution environment.
-use common::*;
+use util::*;
+use action_params::{ActionParams, ActionValue};
 use state::{State, Substate};
 use engines::Engine;
 use types::executed::CallType;
+use env_info::EnvInfo;
+use error::ExecutionError;
 use evm::{self, Ext, Factory, Finalize};
 use externalities::*;
 use trace::{FlatTrace, Tracer, NoopTracer, ExecutiveTracer, VMTrace, VMTracer, ExecutiveVMTracer, NoopVMTracer};
+use transaction::{Action, SignedTransaction};
 use crossbeam;
 pub use types::executed::{Executed, ExecutionResult};
 
-/// Max depth to avoid stack overflow (when it's reached we start a new thread with VM)
+/// Roughly estimate what stack size each level of evm depth will use
 /// TODO [todr] We probably need some more sophisticated calculations here (limit on my machine 132)
 /// Maybe something like here: `https://github.com/ethereum/libethereum/blob/4db169b8504f2b87f7d5a481819cfb959fc65f6c/libethereum/ExtVM.cpp`
-const MAX_VM_DEPTH_FOR_THREAD: usize = 64;
+const STACK_SIZE_PER_DEPTH: usize = 24*1024;
 
 /// Returns new address created from address and given nonce.
 pub fn contract_address(address: &Address, nonce: &U256) -> Address {
@@ -149,12 +153,13 @@ impl<'a> Executive<'a> {
 
 		// TODO: we might need bigints here, or at least check overflows.
 		let balance = self.state.balance(&sender);
-		let gas_cost = U512::from(t.gas) * U512::from(t.gas_price);
+		let gas_cost = t.gas.full_mul(t.gas_price);
 		let total_cost = U512::from(t.value) + gas_cost;
 
 		// avoid unaffordable transactions
-		if U512::from(balance) < total_cost {
+		let balance512 = U512::from(balance);
-			return Err(From::from(ExecutionError::NotEnoughCash { required: total_cost, got: U512::from(balance) }));
+		if balance512 < total_cost {
+			return Err(From::from(ExecutionError::NotEnoughCash { required: total_cost, got: balance512 }));
 		}
 
 		// NOTE: there can be no invalid transactions from this point.
@@ -168,13 +173,14 @@ impl<'a> Executive<'a> {
 				let new_address = contract_address(&sender, &nonce);
 				let params = ActionParams {
 					code_address: new_address.clone(),
+					code_hash: t.data.sha3(),
 					address: new_address,
 					sender: sender.clone(),
 					origin: sender.clone(),
 					gas: init_gas,
 					gas_price: t.gas_price,
 					value: ActionValue::Transfer(t.value),
-					code: Some(t.data.clone()),
+					code: Some(Arc::new(t.data.clone())),
 					data: None,
 					call_type: CallType::None,
 				};
@@ -190,6 +196,7 @@ impl<'a> Executive<'a> {
 					gas_price: t.gas_price,
 					value: ActionValue::Transfer(t.value),
 					code: self.state.code(address),
+					code_hash: self.state.code_hash(address),
 					data: Some(t.data.clone()),
 					call_type: CallType::Call,
 				};
@@ -210,8 +217,11 @@ impl<'a> Executive<'a> {
 		tracer: &mut T,
 		vm_tracer: &mut V
 	) -> evm::Result<U256> where T: Tracer, V: VMTracer {
+
+		let depth_threshold = ::io::LOCAL_STACK_SIZE.with(|sz| sz.get() / STACK_SIZE_PER_DEPTH);
+
 		// Ordinary execution - keep VM in same thread
-		if (self.depth + 1) % MAX_VM_DEPTH_FOR_THREAD != 0 {
+		if (self.depth + 1) % depth_threshold != 0 {
 			let vm_factory = self.vm_factory;
 			let mut ext = self.as_externalities(OriginInfo::from(&params), unconfirmed_substate, output_policy, tracer, vm_tracer);
 			trace!(target: "executive", "ext.schedule.have_delegate_call: {}", ext.schedule().have_delegate_call);
@@ -244,7 +254,7 @@ impl<'a> Executive<'a> {
 		vm_tracer: &mut V
 	) -> evm::Result<U256> where T: Tracer, V: VMTracer {
 		// backup used in case of running out of gas
-		self.state.snapshot();
+		self.state.checkpoint();
 
 		// at first, transfer value to destination
 		if let ActionValue::Transfer(val) = params.value {
@@ -263,7 +273,7 @@ impl<'a> Executive<'a> {
 			let cost = self.engine.cost_of_builtin(&params.code_address, data);
 			if cost <= params.gas {
 				self.engine.execute_builtin(&params.code_address, data, &mut output);
-				self.state.clear_snapshot();
+				self.state.discard_checkpoint();
 
 				// trace only top level calls to builtins to avoid DDoS attacks
 				if self.depth == 0 {
@@ -283,7 +293,7 @@ impl<'a> Executive<'a> {
 				Ok(params.gas - cost)
 			} else {
 				// just drain the whole gas
-				self.state.revert_snapshot();
+				self.state.revert_to_checkpoint();
 
 				tracer.trace_failed_call(trace_info, vec![], evm::Error::OutOfGas.into());
 
@@ -329,7 +339,7 @@ impl<'a> Executive<'a> {
 				res
 			} else {
 				// otherwise it's just a basic transaction, only do tracing, if necessary.
-				self.state.clear_snapshot();
+				self.state.discard_checkpoint();
 
 				tracer.trace_call(trace_info, U256::zero(), trace_output, vec![]);
 				Ok(params.gas)
@@ -348,7 +358,7 @@ impl<'a> Executive<'a> {
 		vm_tracer: &mut V
 	) -> evm::Result<U256> where T: Tracer, V: VMTracer {
 		// backup used in case of running out of gas
-		self.state.snapshot();
+		self.state.checkpoint();
 
 		// part of substate that may be reverted
 		let mut unconfirmed_substate = Substate::new();
@@ -411,7 +421,7 @@ impl<'a> Executive<'a> {
 
 		// real ammount to refund
 		let gas_left_prerefund = match result { Ok(x) => x, _ => 0.into() };
-		let refunded = cmp::min(refunds_bound, (t.gas - gas_left_prerefund) / U256::from(2));
+		let refunded = cmp::min(refunds_bound, (t.gas - gas_left_prerefund) >> 1);
 		let gas_left = gas_left_prerefund + refunded;
 
 		let gas_used = t.gas - gas_left;
@@ -421,8 +431,16 @@ impl<'a> Executive<'a> {
 		trace!("exec::finalize: t.gas={}, sstore_refunds={}, suicide_refunds={}, refunds_bound={}, gas_left_prerefund={}, refunded={}, gas_left={}, gas_used={}, refund_value={}, fees_value={}\n",
 			t.gas, sstore_refunds, suicide_refunds, refunds_bound, gas_left_prerefund, refunded, gas_left, gas_used, refund_value, fees_value);
 
-		trace!("exec::finalize: Refunding refund_value={}, sender={}\n", refund_value, t.sender().unwrap());
+		let sender = match t.sender() {
-		self.state.add_balance(&t.sender().unwrap(), &refund_value);
+			Ok(sender) => sender,
+			Err(e) => {
+				debug!(target: "executive", "attempted to finalize transaction without sender: {}", e);
+				return Err(ExecutionError::Internal);
+			}
+		};
+
+		trace!("exec::finalize: Refunding refund_value={}, sender={}\n", refund_value, sender);
+		self.state.add_balance(&sender, &refund_value);
 		trace!("exec::finalize: Compensating author: fees_value={}, author={}\n", fees_value, &self.info.author);
 		self.state.add_balance(&self.info.author, &fees_value);
 
@@ -471,10 +489,10 @@ impl<'a> Executive<'a> {
 				| Err(evm::Error::BadInstruction {.. })
 				| Err(evm::Error::StackUnderflow {..})
 				| Err(evm::Error::OutOfStack {..}) => {
-					self.state.revert_snapshot();
+					self.state.revert_to_checkpoint();
 			},
 			Ok(_) | Err(evm::Error::Internal) => {
-				self.state.clear_snapshot();
+				self.state.discard_checkpoint();
 				substate.accrue(un_substate);
 			}
 		}
@@ -486,13 +504,18 @@ impl<'a> Executive<'a> {
 mod tests {
 	use ethkey::{Generator, Random};
 	use super::*;
-	use common::*;
+	use util::*;
+	use action_params::{ActionParams, ActionValue};
+	use env_info::EnvInfo;
 	use evm::{Factory, VMType};
+	use error::ExecutionError;
 	use state::Substate;
 	use tests::helpers::*;
 	use trace::trace;
 	use trace::{FlatTrace, Tracer, NoopTracer, ExecutiveTracer};
 	use trace::{VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff, VMTracer, NoopVMTracer, ExecutiveVMTracer};
+	use transaction::{Action, Transaction};
+
 	use types::executed::CallType;
 
 	#[test]
@@ -511,7 +534,7 @@ mod tests {
 		params.address = address.clone();
 		params.sender = sender.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some("3331600055".from_hex().unwrap());
+		params.code = Some(Arc::new("3331600055".from_hex().unwrap()));
 		params.value = ActionValue::Transfer(U256::from(0x7));
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();
@@ -570,7 +593,7 @@ mod tests {
 		params.sender = sender.clone();
 		params.origin = sender.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some(code.clone());
+		params.code = Some(Arc::new(code));
 		params.value = ActionValue::Transfer(U256::from(100));
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();
@@ -589,8 +612,11 @@ mod tests {
 		assert_eq!(substate.contracts_created.len(), 0);
 	}
 
-	evm_test!{test_call_to_create: test_call_to_create_jit, test_call_to_create_int}
+	#[test]
-	fn test_call_to_create(factory: Factory) {
+	// Tracing is not suported in JIT
+	fn test_call_to_create() {
+		let factory = Factory::new(VMType::Interpreter, 1024 * 32);
+
 		// code:
 		//
 		// 7c 601080600c6000396000f3006000355415600957005b60203560003555 - push 29 bytes?
@@ -625,7 +651,7 @@ mod tests {
 		params.sender = sender.clone();
 		params.origin = sender.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some(code.clone());
+		params.code = Some(Arc::new(code));
 		params.value = ActionValue::Transfer(U256::from(100));
 		params.call_type = CallType::Call;
 		let mut state_result = get_temp_state();
@@ -688,7 +714,7 @@ mod tests {
 				VMOperation { pc: 33, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99985.into(), stack_push: vec_into![29], mem_diff: None, store_diff: None }) },
 				VMOperation { pc: 35, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99982.into(), stack_push: vec_into![3], mem_diff: None, store_diff: None }) },
 				VMOperation { pc: 37, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99979.into(), stack_push: vec_into![23], mem_diff: None, store_diff: None }) },
-				VMOperation { pc: 39, instruction: 240, gas_cost: 32000.into(), executed: Some(VMExecutedOperation { gas_used: 67979.into(), stack_push: vec_into![U256::from_dec_str("1135198453258042933984631383966629874710669425204").unwrap()], mem_diff: None, store_diff: None }) },
+				VMOperation { pc: 39, instruction: 240, gas_cost: 99979.into(), executed: Some(VMExecutedOperation { gas_used: 64755.into(), stack_push: vec_into![U256::from_dec_str("1135198453258042933984631383966629874710669425204").unwrap()], mem_diff: None, store_diff: None }) },
 				VMOperation { pc: 40, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 64752.into(), stack_push: vec_into![0], mem_diff: None, store_diff: None }) },
 				VMOperation { pc: 42, instruction: 85, gas_cost: 20000.into(), executed: Some(VMExecutedOperation { gas_used: 44752.into(), stack_push: vec_into![], mem_diff: None, store_diff: Some(StorageDiff { location: 0.into(), value: U256::from_dec_str("1135198453258042933984631383966629874710669425204").unwrap() }) }) }
 			],
@@ -712,8 +738,10 @@ mod tests {
 		assert_eq!(vm_tracer.drain().unwrap(), expected_vm_trace);
 	}
 
-	evm_test!{test_create_contract: test_create_contract_jit, test_create_contract_int}
+	#[test]
-	fn test_create_contract(factory: Factory) {
+	fn test_create_contract() {
+		// Tracing is not supported in JIT
+		let factory = Factory::new(VMType::Interpreter, 1024 * 32);
 		// code:
 		//
 		// 60 10 - push 16
@@ -735,7 +763,7 @@ mod tests {
 		params.sender = sender.clone();
 		params.origin = sender.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some(code.clone());
+		params.code = Some(Arc::new(code));
 		params.value = ActionValue::Transfer(100.into());
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();
@@ -823,7 +851,7 @@ mod tests {
 		params.sender = sender.clone();
 		params.origin = sender.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some(code.clone());
+		params.code = Some(Arc::new(code));
 		params.value = ActionValue::Transfer(U256::from(100));
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();
@@ -875,7 +903,7 @@ mod tests {
 		params.sender = sender.clone();
 		params.origin = sender.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some(code.clone());
+		params.code = Some(Arc::new(code));
 		params.value = ActionValue::Transfer(U256::from(100));
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();
@@ -932,7 +960,7 @@ mod tests {
 		params.address = address_a.clone();
 		params.sender = sender.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some(code_a.clone());
+		params.code = Some(Arc::new(code_a.clone()));
 		params.value = ActionValue::Transfer(U256::from(100_000));
 
 		let mut state_result = get_temp_state();
@@ -982,10 +1010,10 @@ mod tests {
 		let mut params = ActionParams::default();
 		params.address = address.clone();
 		params.gas = U256::from(100_000);
-		params.code = Some(code.clone());
+		params.code = Some(Arc::new(code.clone()));
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();
-		state.init_code(&address, code.clone());
+		state.init_code(&address, code);
 		let info = EnvInfo::default();
 		let engine = TestEngine::new(0);
 		let mut substate = Substate::new();
@@ -1183,7 +1211,7 @@ mod tests {
 		params.sender = sender.clone();
 		params.origin = sender.clone();
 		params.gas = U256::from(0x0186a0);
-		params.code = Some(code.clone());
+		params.code = Some(Arc::new(code));
 		params.value = ActionValue::Transfer(U256::from_str("0de0b6b3a7640000").unwrap());
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();

ethcore/src/externalities.rs

@@ -15,9 +15,11 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Transaction Execution environment.
-use common::*;
+use util::*;
+use action_params::{ActionParams, ActionValue};
 use state::{State, Substate};
 use engines::Engine;
+use env_info::EnvInfo;
 use executive::*;
 use evm::{self, Schedule, Ext, ContractCreateResult, MessageCallResult, Factory};
 use types::executed::CallType;
@@ -146,7 +148,8 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 			gas: *gas,
 			gas_price: self.origin_info.gas_price,
 			value: ActionValue::Transfer(*value),
-			code: Some(code.to_vec()),
+			code: Some(Arc::new(code.to_vec())),
+			code_hash: code.sha3(),
 			data: None,
 			call_type: CallType::None,
 		};
@@ -185,6 +188,7 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 			gas: *gas,
 			gas_price: self.origin_info.gas_price,
 			code: self.state.code(code_address),
+			code_hash: self.state.code_hash(code_address),
 			data: Some(data.to_vec()),
 			call_type: call_type,
 		};
@@ -201,15 +205,14 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 		}
 	}
 
-	fn extcode(&self, address: &Address) -> Bytes {
+	fn extcode(&self, address: &Address) -> Arc<Bytes> {
-		self.state.code(address).unwrap_or_else(|| vec![])
+		self.state.code(address).unwrap_or_else(|| Arc::new(vec![]))
 	}
 
 	fn extcodesize(&self, address: &Address) -> usize {
 		self.state.code_size(address).unwrap_or(0)
 	}
 
-
 	#[cfg_attr(feature="dev", allow(match_ref_pats))]
 	fn ret(mut self, gas: &U256, data: &[u8]) -> evm::Result<U256>
 		where Self: Sized {
@@ -252,6 +255,8 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 	}
 
 	fn log(&mut self, topics: Vec<H256>, data: &[u8]) {
+		use log_entry::LogEntry;
+
 		let address = self.origin_info.address.clone();
 		self.substate.logs.push(LogEntry {
 			address: address,
@@ -302,8 +307,9 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 
 #[cfg(test)]
 mod tests {
-	use common::*;
+	use util::*;
 	use engines::Engine;
+	use env_info::EnvInfo;
 	use evm::Ext;
 	use state::{State, Substate};
 	use tests::helpers::*;

ethcore/src/header.rs

@@ -17,7 +17,7 @@
 //! Block header.
 
 use util::*;
-use basic_types::*;
+use basic_types::{LogBloom, Seal, ZERO_LOGBLOOM};
 use time::get_time;
 use rlp::*;
 
@@ -199,8 +199,9 @@ impl Header {
  		match &mut *hash {
  			&mut Some(ref h) => h.clone(),
  			hash @ &mut None => {
- 				*hash = Some(self.rlp_sha3(Seal::With));
+				let h = self.rlp_sha3(Seal::With);
- 				hash.as_ref().unwrap().clone()
+ 				*hash = Some(h.clone());
+ 				h
  			}
 		}
 	}
@@ -211,8 +212,9 @@ impl Header {
 		match &mut *hash {
 			&mut Some(ref h) => h.clone(),
 			hash @ &mut None => {
-				*hash = Some(self.rlp_sha3(Seal::Without));
+				let h = self.rlp_sha3(Seal::Without);
-				hash.as_ref().unwrap().clone()
+				*hash = Some(h.clone());
+				h
 			}
 		}
 	}
@@ -295,6 +297,12 @@ impl Encodable for Header {
 	}
 }
 
+impl HeapSizeOf for Header {
+	fn heap_size_of_children(&self) -> usize {
+		self.extra_data.heap_size_of_children() + self.seal.heap_size_of_children()
+	}
+}
+
 #[cfg(test)]
 mod tests {
 	use rustc_serialize::hex::FromHex;

ethcore/src/json_tests/chain.rs

@@ -48,7 +48,8 @@ pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
 				let mut spec = match era {
 					ChainEra::Frontier => ethereum::new_frontier_test(),
 					ChainEra::Homestead => ethereum::new_homestead_test(),
-					ChainEra::DaoHardfork => ethereum::new_daohardfork_test(),
+					ChainEra::Eip150 => ethereum::new_eip150_test(),
+					ChainEra::TransitionTest => ethereum::new_transition_test(),
 				};
 				spec.set_genesis_state(state);
 				spec.overwrite_genesis_params(genesis);
@@ -116,14 +117,38 @@ mod frontier_era_tests {
 	declare_test!{BlockchainTests_RandomTests_bl201507071825GO, "BlockchainTests/RandomTests/bl201507071825GO"}
 }
 
-mod daohardfork_tests {
+mod transition_tests {
 	use tests::helpers::*;
 	use super::json_chain_test;
 
 	fn do_json_test(json_data: &[u8]) -> Vec<String> {
-		json_chain_test(json_data, ChainEra::DaoHardfork)
+		json_chain_test(json_data, ChainEra::TransitionTest)
 	}
 
 	declare_test!{BlockchainTests_TestNetwork_bcSimpleTransitionTest, "BlockchainTests/TestNetwork/bcSimpleTransitionTest"}
 	declare_test!{BlockchainTests_TestNetwork_bcTheDaoTest, "BlockchainTests/TestNetwork/bcTheDaoTest"}
+	declare_test!{BlockchainTests_TestNetwork_bcEIP150Test, "BlockchainTests/TestNetwork/bcEIP150Test"}
+}
+
+mod eip150_blockchain_tests {
+	use tests::helpers::*;
+	use super::json_chain_test;
+
+	fn do_json_test(json_data: &[u8]) -> Vec<String> {
+		json_chain_test(json_data, ChainEra::Eip150)
+	}
+
+	declare_test!{BlockchainTests_EIP150_bcBlockGasLimitTest, "BlockchainTests/EIP150/bcBlockGasLimitTest"}
+	declare_test!{BlockchainTests_EIP150_bcForkStressTest, "BlockchainTests/EIP150/bcForkStressTest"}
+	declare_test!{BlockchainTests_EIP150_bcGasPricerTest, "BlockchainTests/EIP150/bcGasPricerTest"}
+	declare_test!{BlockchainTests_EIP150_bcInvalidHeaderTest, "BlockchainTests/EIP150/bcInvalidHeaderTest"}
+	declare_test!{BlockchainTests_EIP150_bcInvalidRLPTest, "BlockchainTests/EIP150/bcInvalidRLPTest"}
+	declare_test!{BlockchainTests_EIP150_bcMultiChainTest, "BlockchainTests/EIP150/bcMultiChainTest"}
+	declare_test!{BlockchainTests_EIP150_bcRPC_API_Test, "BlockchainTests/EIP150/bcRPC_API_Test"}
+	declare_test!{BlockchainTests_EIP150_bcStateTest, "BlockchainTests/EIP150/bcStateTest"}
+	declare_test!{BlockchainTests_EIP150_bcTotalDifficultyTest, "BlockchainTests/EIP150/bcTotalDifficultyTest"}
+	declare_test!{BlockchainTests_EIP150_bcUncleHeaderValiditiy, "BlockchainTests/EIP150/bcUncleHeaderValiditiy"}
+	declare_test!{BlockchainTests_EIP150_bcUncleTest, "BlockchainTests/EIP150/bcUncleTest"}
+	declare_test!{BlockchainTests_EIP150_bcValidBlockTest, "BlockchainTests/EIP150/bcValidBlockTest"}
+	declare_test!{BlockchainTests_EIP150_bcWalletTest, "BlockchainTests/EIP150/bcWalletTest"}
 }

ethcore/src/json_tests/eip150_state.rs

@@ -0,0 +1,43 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use super::test_common::*;
+use tests::helpers::*;
+use super::state::json_chain_test;
+
+fn do_json_test(json_data: &[u8]) -> Vec<String> {
+	json_chain_test(json_data, ChainEra::Eip150)
+}
+
+declare_test!{StateTests_EIP150_stEIPSpecificTest, "StateTests/EIP150/stEIPSpecificTest"}
+declare_test!{StateTests_EIP150_stEIPsingleCodeGasPrices, "StateTests/EIP150/stEIPsingleCodeGasPrices"}
+declare_test!{StateTests_EIP150_stMemExpandingEIPCalls, "StateTests/EIP150/stMemExpandingEIPCalls"}
+
+declare_test!{StateTests_EIP150_stCallCodes, "StateTests/EIP150/Homestead/stCallCodes"}
+declare_test!{StateTests_EIP150_stCallCreateCallCodeTest, "StateTests/EIP150/Homestead/stCallCreateCallCodeTest"}
+declare_test!{StateTests_EIP150_stDelegatecallTest, "StateTests/EIP150/Homestead/stDelegatecallTest"}
+declare_test!{StateTests_EIP150_stInitCodeTest, "StateTests/EIP150/Homestead/stInitCodeTest"}
+declare_test!{StateTests_EIP150_stLogTests, "StateTests/EIP150/Homestead/stLogTests"}
+declare_test!{heavy => StateTests_EIP150_stMemoryStressTest, "StateTests/EIP150/Homestead/stMemoryStressTest"}
+declare_test!{heavy => StateTests_EIP150_stMemoryTest, "StateTests/EIP150/Homestead/stMemoryTest"}
+declare_test!{StateTests_EIP150_stPreCompiledContracts, "StateTests/EIP150/Homestead/stPreCompiledContracts"}
+declare_test!{heavy => StateTests_EIP150_stQuadraticComplexityTest, "StateTests/EIP150/Homestead/stQuadraticComplexityTest"}
+declare_test!{StateTests_EIP150_stRecursiveCreate, "StateTests/EIP150/Homestead/stRecursiveCreate"}
+declare_test!{StateTests_EIP150_stRefundTest, "StateTests/EIP150/Homestead/stRefundTest"}
+declare_test!{StateTests_EIP150_stSpecialTest, "StateTests/EIP150/Homestead/stSpecialTest"}
+declare_test!{StateTests_EIP150_stSystemOperationsTest, "StateTests/EIP150/Homestead/stSystemOperationsTest"}
+declare_test!{StateTests_EIP150_stTransactionTest, "StateTests/EIP150/Homestead/stTransactionTest"}
+declare_test!{StateTests_EIP150_stWalletTest, "StateTests/EIP150/Homestead/stWalletTest"}