WASM contracts MVP (#5679)

* lifetime issues

* refactor to new 'native env'

* descriptors and such

* wasm mvp continued

* finalized env/ext bindings

* descriptor -> call_args

* inject gas counter

* result processing and engine activation

* tabify some source files

* needs return new

* wasm tests initial

* erradicate warnings

* origin in the descriptor

* update test repo

* payload verification tests

* identity return payload test

* some test description

* dispersion test

* check length here

* suicidal contract

* engine params

* fix typo

* review fixes

* submodule update

* update - purge reserved space

* doc effort

* more review fixes

* fix error message

* fix dependency url

* reorg error handling

* update submodule

* update utils

* update to latest parity-wasm

* tabify

* fix wasm magic header

* update dependencies

* external create and tests

* update to latest tests

* extra trace info

* Update parity-wasm

* update wasm-utils also

* few traces and result handle change

* alter trace content

* fix issues with optimizer, update to latest parity with validator, etc

* static initialization

* license preamble

* update wasm crates and gas costs

* fix grumbles

* bring back lifetime

* fix compilation
This commit is contained in:
Nikolay Volf 2017-07-10 18:42:10 +03:00 committed by Gav Wood
parent b49c039f41
commit 62210fb932
21 changed files with 1241 additions and 17 deletions

3
.gitmodules vendored
View File

@ -2,3 +2,6 @@
path = ethcore/res/ethereum/tests
url = https://github.com/ethereum/tests.git
branch = develop
[submodule "ethcore/res/wasm-tests"]
path = ethcore/res/wasm-tests
url = https://github.com/paritytech/wasm-tests

82
Cargo.lock generated
View File

@ -57,6 +57,16 @@ dependencies = [
"syntex_syntax 0.58.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "atty"
version = "0.2.2"
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 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "base-x"
version = "0.2.2"
@ -119,6 +129,11 @@ name = "bitflags"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "bitflags"
version = "0.8.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "bitflags"
version = "0.9.1"
@ -173,6 +188,21 @@ dependencies = [
"multihash 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "clap"
version = "2.24.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"ansi_term 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
"atty 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
"bitflags 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
"strsim 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
"term_size 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"unicode-segmentation 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
"unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
"vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "clippy"
version = "0.0.103"
@ -376,6 +406,7 @@ dependencies = [
"native-contracts 0.1.0",
"num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
"num_cpus 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"parity-wasm 0.12.1 (git+http://github.com/nikvolf/parity-wasm)",
"rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
"rlp 0.2.0",
"rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
@ -385,6 +416,7 @@ dependencies = [
"stats 0.1.0",
"time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
"transient-hashmap 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"wasm-utils 0.1.0 (git+https://github.com/paritytech/wasm-utils)",
]
[[package]]
@ -1848,6 +1880,16 @@ dependencies = [
"target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "parity-wasm"
version = "0.12.1"
source = "git+http://github.com/nikvolf/parity-wasm#98311ec7333e0d3dc9e45c9df673cc79e41acb83"
dependencies = [
"byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
"parking_lot 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "parity-wordlist"
version = "1.0.1"
@ -2523,6 +2565,16 @@ dependencies = [
"winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "term_size"
version = "0.3.0"
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 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "termios"
version = "0.2.2"
@ -2743,6 +2795,11 @@ name = "unicode-segmentation"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "unicode-width"
version = "0.1.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "unicode-xid"
version = "0.0.4"
@ -2784,6 +2841,11 @@ name = "utf8-ranges"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "vec_map"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "vecio"
version = "0.1.0"
@ -2807,6 +2869,18 @@ name = "void"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "wasm-utils"
version = "0.1.0"
source = "git+https://github.com/paritytech/wasm-utils#357a5deed635938e79553227bfab976959ca3523"
dependencies = [
"clap 2.24.2 (registry+https://github.com/rust-lang/crates.io-index)",
"env_logger 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
"lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
"parity-wasm 0.12.1 (git+http://github.com/nikvolf/parity-wasm)",
]
[[package]]
name = "winapi"
version = "0.2.8"
@ -2882,6 +2956,7 @@ dependencies = [
"checksum app_dirs 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b7d1c0d48a81bbb13043847f957971f4d87c81542d80ece5e84ba3cba4058fd4"
"checksum arrayvec 0.3.20 (registry+https://github.com/rust-lang/crates.io-index)" = "d89f1b0e242270b5b797778af0c8d182a1a2ccac5d8d6fadf414223cc0fab096"
"checksum aster 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ccfdf7355d9db158df68f976ed030ab0f6578af811f5a7bb6dcf221ec24e0e0"
"checksum atty 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d912da0db7fa85514874458ca3651fe2cddace8d0b0505571dbdcd41ab490159"
"checksum base-x 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2f59103b47307f76e03bef1633aec7fa9e29bfb5aa6daf5a334f94233c71f6c1"
"checksum base32 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1b9605ba46d61df0410d8ac686b0007add8172eba90e8e909c347856fe794d8c"
"checksum bigint 3.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d0673c930652d3d4d6dcd5c45b5db4fa5f8f33994d7323618c43c083b223e8c"
@ -2891,6 +2966,7 @@ dependencies = [
"checksum bit-vec 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "5b97c2c8e8bbb4251754f559df8af22fb264853c7d009084a576cdf12565089d"
"checksum bitflags 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4f67931368edf3a9a51d29886d245f1c3db2f1ef0dcc9e35ff70341b78c10d23"
"checksum bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aad18937a628ec6abcd26d1489012cc0e18c21798210f491af69ded9b881106d"
"checksum bitflags 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1370e9fc2a6ae53aea8b7a5110edbd08836ed87c88736dfabccade1c2b44bff4"
"checksum bitflags 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4efd02e230a02e18f92fc2735f44597385ed02ad8f831e7c1c1156ee5e1ab3a5"
"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"
@ -2899,6 +2975,7 @@ dependencies = [
"checksum bytes 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8b24f16593f445422331a5eed46b72f7f171f910fead4f2ea8f17e727e9c5c14"
"checksum cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de1e760d7b6535af4241fca8bd8adf68e2e7edacc6b29f5d399050c5e48cf88c"
"checksum cid 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "34aa7da06f10541fbca6850719cdaa8fa03060a5d2fb33840f149cf8133a00c7"
"checksum clap 2.24.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6b8f69e518f967224e628896b54e41ff6acfb4dcfefc5076325c36525dac900f"
"checksum clippy 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "5b4fabf979ddf6419a313c1c0ada4a5b95cfd2049c56e8418d622d27b4b6ff32"
"checksum clippy_lints 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "ce96ec05bfe018a0d5d43da115e54850ea2217981ff0f2e462780ab9d594651a"
"checksum cookie 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d53b80dde876f47f03cda35303e368a79b91c70b0d65ecba5fd5280944a08591"
@ -3003,6 +3080,7 @@ dependencies = [
"checksum parity-dapps-glue 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e1d06f6ee0fda786df3784a96ee3f0629f529b91cbfb7d142f6410e6bcd1ce2c"
"checksum parity-tokio-ipc 0.1.5 (git+https://github.com/nikvolf/parity-tokio-ipc)" = "<none>"
"checksum parity-ui-precompiled 1.4.0 (git+https://github.com/paritytech/js-precompiled.git)" = "<none>"
"checksum parity-wasm 0.12.1 (git+http://github.com/nikvolf/parity-wasm)" = "<none>"
"checksum parity-wordlist 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "52142d717754f7ff7ef0fc8da1bdce4f302dd576fb9bf8b727d6a5fdef33348d"
"checksum parking_lot 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aebb68eebde2c99f89592d925288600fde220177e46b5c9a91ca218d245aeedf"
"checksum parking_lot_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fb1b97670a2ffadce7c397fb80a3d687c4f3060140b885621ef1653d0e5d5068"
@ -3080,6 +3158,7 @@ dependencies = [
"checksum target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c63f48baada5c52e65a29eef93ab4f8982681b67f9e8d29c7b05abcfec2b9ffe"
"checksum tempdir 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "87974a6f5c1dfb344d733055601650059a3363de2a6104819293baff662132d6"
"checksum term 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d168af3930b369cfe245132550579d47dfd873d69470755a19c2c6568dbbd989"
"checksum term_size 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2b6b55df3198cc93372e85dd2ed817f0e38ce8cc0f22eb32391bfad9c4bf209"
"checksum termios 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d5d9cf598a6d7ce700a4e6a9199da127e6819a61e64b68609683cc9a01b5683a"
"checksum thread-id 3.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4437c97558c70d129e40629a5b385b3fb1ffac301e63941335e4d354081ec14a"
"checksum thread_local 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c85048c6260d17cf486ceae3282d9fb6b90be220bf5b28c400f5485ffc29f0c7"
@ -3103,15 +3182,18 @@ dependencies = [
"checksum unicode-bidi 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c1f7ceb96afdfeedee42bade65a0d585a6a0106f681b6749c8ff4daa8df30b3f"
"checksum unicode-normalization 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "26643a2f83bac55f1976fb716c10234485f9202dcd65cfbdf9da49867b271172"
"checksum unicode-segmentation 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "18127285758f0e2c6cf325bb3f3d138a12fee27de4f23e146cd6a179f26c2cf3"
"checksum unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "bf3a113775714a22dcb774d8ea3655c53a32debae63a063acc00a91cc586245f"
"checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
"checksum unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1f2ae5ddb18e1c92664717616dd9549dde73f539f01bd7b77c2edb2446bdff91"
"checksum untrusted 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6b65243989ef6aacd9c0d6bd2b822765c3361d8ed352185a6f3a41f3a718c673"
"checksum url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "afe9ec54bc4db14bc8744b7fed060d785ac756791450959b2248443319d5b119"
"checksum user32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ef4711d107b21b410a3a974b1204d9accc8b10dad75d8324b5d755de1617d47"
"checksum utf8-ranges 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "662fab6525a98beff2921d7f61a39e7d59e0b425ebc7d0d9e66d316e55124122"
"checksum vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "887b5b631c2ad01628bbbaa7dd4c869f80d3186688f8d0b6f58774fbe324988c"
"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 wasm-utils 0.1.0 (git+https://github.com/paritytech/wasm-utils)" = "<none>"
"checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
"checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
"checksum ws 0.7.1 (git+https://github.com/tomusdrw/ws-rs)" = "<none>"

View File

@ -52,6 +52,8 @@ semver = "0.6"
stats = { path = "../util/stats" }
time = "0.1"
transient-hashmap = "0.4"
parity-wasm = { git = "https://github.com/nikvolf/parity-wasm" }
wasm-utils = { git = "https://github.com/paritytech/wasm-utils" }
[dev-dependencies]
native-contracts = { path = "native_contracts", features = ["test_contracts"] }

@ -0,0 +1 @@
Subproject commit 9ed6304313fa949ed92aa0570fb2bc759fb6dc58

View File

@ -39,6 +39,16 @@ impl ActionValue {
ActionValue::Transfer(x) | ActionValue::Apparent(x) => x
}
}
/// Returns the transfer action value of the U256-convertable raw value
pub fn transfer<T: Into<U256>>(transfer_value: T) -> ActionValue {
ActionValue::Transfer(transfer_value.into())
}
/// Returns the apparent action value of the U256-convertable raw value
pub fn apparent<T: Into<U256>>(apparent_value: T) -> ActionValue {
ActionValue::Apparent(apparent_value.into())
}
}
// TODO: should be a trait, possible to avoid cloning everything from a Transaction(/View).

View File

@ -376,6 +376,11 @@ pub trait Engine : Sync + Send {
self.snapshot_components().is_some()
}
/// If this engine supports wasm contracts.
fn supports_wasm(&self) -> bool {
self.params().wasm
}
/// Returns new contract address generation scheme at given block number.
fn create_address_scheme(&self, number: BlockNumber) -> CreateContractAddress {
if number >= self.params().eip86_transition {

View File

@ -21,6 +21,7 @@ use util::{U128, U256, U512, trie};
use action_params::ActionParams;
use evm::Ext;
use builtin;
use super::wasm;
/// Evm errors.
#[derive(Debug, Clone, PartialEq)]
@ -66,6 +67,8 @@ pub enum Error {
MutableCallInStaticContext,
/// Likely to cause consensus issues.
Internal(String),
/// Wasm runtime error
Wasm(String),
}
impl From<Box<trie::TrieError>> for Error {
@ -80,6 +83,12 @@ impl From<builtin::Error> for Error {
}
}
impl From<wasm::RuntimeError> for Error {
fn from(err: wasm::RuntimeError) -> Self {
Error::Wasm(format!("Runtime error: {:?}", err))
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::Error::*;
@ -92,6 +101,7 @@ impl fmt::Display for Error {
BuiltIn(name) => write!(f, "Built-in failed: {}", name),
Internal(ref msg) => write!(f, "Internal error: {}", msg),
MutableCallInStaticContext => write!(f, "Mutable call in static context"),
Wasm(ref msg) => write!(f, "Internal error: {}", msg),
}
}
}

View File

@ -22,6 +22,7 @@ pub mod interpreter;
#[macro_use]
pub mod factory;
pub mod schedule;
pub mod wasm;
mod vmtype;
mod instructions;

View File

@ -39,13 +39,13 @@ pub enum FakeCallType {
#[derive(PartialEq, Eq, Hash, Debug)]
pub struct FakeCall {
call_type: FakeCallType,
gas: U256,
sender_address: Option<Address>,
receive_address: Option<Address>,
value: Option<U256>,
data: Bytes,
code_address: Option<Address>,
pub call_type: FakeCallType,
pub gas: U256,
pub sender_address: Option<Address>,
pub receive_address: Option<Address>,
pub value: Option<U256>,
pub data: Bytes,
pub code_address: Option<Address>,
}
/// Fake externalities test structure.
@ -53,17 +53,17 @@ pub struct FakeCall {
/// Can't do recursive calls.
#[derive(Default)]
pub struct FakeExt {
pub store: HashMap<H256, H256>,
pub suicides: HashSet<Address>,
pub calls: HashSet<FakeCall>,
sstore_clears: usize,
depth: usize,
store: HashMap<H256, H256>,
blockhashes: HashMap<U256, H256>,
codes: HashMap<Address, Arc<Bytes>>,
logs: Vec<FakeLogEntry>,
_suicides: HashSet<Address>,
info: EnvInfo,
schedule: Schedule,
balances: HashMap<Address, U256>,
calls: HashSet<FakeCall>,
}
// similar to the normal `finalize` function, but ignoring NeedsReturn.
@ -173,8 +173,9 @@ impl Ext for FakeExt {
unimplemented!();
}
fn suicide(&mut self, _refund_address: &Address) -> evm::Result<()> {
unimplemented!();
fn suicide(&mut self, refund_address: &Address) -> evm::Result<()> {
self.suicides.insert(refund_address.clone());
Ok(())
}
fn schedule(&self) -> &Schedule {

View File

@ -0,0 +1,62 @@
// Copyright 2015-2017 Parity Technologies (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/>.
//! Wasm evm call arguments helper
use util::{U256, H160};
/// Input part of the wasm call descriptor
pub struct CallArgs {
/// Receiver of the transaction
pub address: [u8; 20],
/// Sender of the transaction
pub sender: [u8; 20],
/// Original transaction initiator
pub origin: [u8; 20],
/// Transfer value
pub value: [u8; 32],
/// call/create params
pub data: Vec<u8>,
}
impl CallArgs {
/// New contract call payload with known parameters
pub fn new(address: H160, sender: H160, origin: H160, value: U256, data: Vec<u8>) -> Self {
let mut descriptor = CallArgs {
address: [0u8; 20],
sender: [0u8; 20],
origin: [0u8; 20],
value: [0u8; 32],
data: data,
};
descriptor.address.copy_from_slice(&*address);
descriptor.sender.copy_from_slice(&*sender);
descriptor.origin.copy_from_slice(&*origin);
value.to_big_endian(&mut descriptor.value);
descriptor
}
/// Total call payload length in linear memory
pub fn len(&self) -> u32 {
self.data.len() as u32 + 92
}
}

119
ethcore/src/evm/wasm/env.rs Normal file
View File

@ -0,0 +1,119 @@
// Copyright 2015-2017 Parity Technologies (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/>.
//! Wasm env module bindings
use parity_wasm::elements::ValueType::*;
use parity_wasm::interpreter::UserFunctionDescriptor;
use parity_wasm::interpreter::UserFunctionDescriptor::*;
pub const SIGNATURES: &'static [UserFunctionDescriptor] = &[
Static(
"_storage_read",
&[I32; 2],
Some(I32),
),
Static(
"_storage_write",
&[I32; 2],
Some(I32),
),
Static(
"_malloc",
&[I32],
Some(I32),
),
Static(
"_free",
&[I32],
None,
),
Static(
"gas",
&[I32],
None,
),
Static(
"_debug",
&[I32; 2],
None,
),
Static(
"_suicide",
&[I32],
None,
),
Static(
"_create",
&[I32; 4],
Some(I32),
),
Static(
"abort",
&[I32],
None,
),
Static(
"_abort",
&[],
None,
),
Static(
"invoke_vii",
&[I32; 3],
None,
),
Static(
"invoke_vi",
&[I32; 2],
None,
),
Static(
"invoke_v",
&[I32],
None,
),
Static(
"invoke_iii",
&[I32; 3],
Some(I32),
),
Static(
"___resumeException",
&[I32],
None,
),
Static(
"_rust_begin_unwind",
&[I32; 4],
None,
),
Static(
"___cxa_find_matching_catch_2",
&[],
Some(I32),
),
Static(
"___gxx_personality_v0",
&[I32; 6],
Some(I32),
),
Static(
"_emscripten_memcpy_big",
&[I32; 3],
Some(I32),
)
];

159
ethcore/src/evm/wasm/mod.rs Normal file
View File

@ -0,0 +1,159 @@
// Copyright 2015-2017 Parity Technologies (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/>.
//! Wasm Interpreter
mod runtime;
mod ptr;
mod call_args;
mod result;
#[cfg(test)]
mod tests;
mod env;
use std::sync::Arc;
const DEFAULT_STACK_SPACE: u32 = 5 * 1024 * 1024;
use parity_wasm::{interpreter, elements};
use parity_wasm::interpreter::ModuleInstanceInterface;
use wasm_utils;
use evm::{self, GasLeft, ReturnData};
use action_params::ActionParams;
use self::runtime::Runtime;
pub use self::runtime::Error as RuntimeError;
const DEFAULT_RESULT_BUFFER: usize = 1024;
/// Wasm interpreter instance
pub struct WasmInterpreter {
program: interpreter::ProgramInstance,
result: Vec<u8>,
}
impl WasmInterpreter {
/// New wasm interpreter instance
pub fn new() -> Result<WasmInterpreter, RuntimeError> {
Ok(WasmInterpreter {
program: interpreter::ProgramInstance::new()?,
result: Vec::with_capacity(DEFAULT_RESULT_BUFFER),
})
}
}
impl evm::Evm for WasmInterpreter {
fn exec(&mut self, params: ActionParams, ext: &mut evm::Ext) -> evm::Result<GasLeft> {
use parity_wasm::elements::Deserialize;
let code = params.code.expect("exec is only called on contract with code; qed");
trace!(target: "wasm", "Started wasm interpreter with code.len={:?}", code.len());
let env_instance = self.program.module("env")
// prefer explicit panic here
.expect("Wasm program to contain env module");
let env_memory = env_instance.memory(interpreter::ItemIndex::Internal(0))
// prefer explicit panic here
.expect("Linear memory to exist in wasm runtime");
if params.gas > ::std::u64::MAX.into() {
return Err(evm::Error::Wasm("Wasm interpreter cannot run contracts with gas >= 2^64".to_owned()));
}
let mut runtime = Runtime::with_params(
ext,
env_memory,
DEFAULT_STACK_SPACE,
params.gas.low_u64(),
);
let mut cursor = ::std::io::Cursor::new(&*code);
let contract_module = wasm_utils::inject_gas_counter(
elements::Module::deserialize(
&mut cursor
).map_err(|err| {
evm::Error::Wasm(format!("Error deserializing contract code ({:?})", err))
})?
);
let d_ptr = runtime.write_descriptor(
call_args::CallArgs::new(
params.address,
params.sender,
params.origin,
params.value.value(),
params.data.unwrap_or(Vec::with_capacity(0)),
)
)?;
{
let execution_params = interpreter::ExecutionParams::with_external(
"env".into(),
Arc::new(
interpreter::env_native_module(env_instance, native_bindings(&mut runtime))
.map_err(|err| {
// todo: prefer explicit panic here also?
evm::Error::Wasm(format!("Error instantiating native bindings: {:?}", err))
})?
)
).add_argument(interpreter::RuntimeValue::I32(d_ptr.as_raw() as i32));
let module_instance = self.program.add_module("contract", contract_module, Some(&execution_params.externals))
.map_err(|err| {
trace!(target: "wasm", "Error adding contract module: {:?}", err);
evm::Error::from(RuntimeError::Interpreter(err))
})?;
module_instance.execute_export("_call", execution_params)
.map_err(|err| {
trace!(target: "wasm", "Error executing contract: {:?}", err);
evm::Error::from(RuntimeError::Interpreter(err))
})?;
}
let result = result::WasmResult::new(d_ptr);
if result.peek_empty(&*runtime.memory())? {
trace!(target: "wasm", "Contract execution result is empty.");
Ok(GasLeft::Known(runtime.gas_left()?.into()))
} else {
self.result.clear();
// todo: use memory views to avoid copy
self.result.extend(result.pop(&*runtime.memory())?);
let len = self.result.len();
Ok(GasLeft::NeedsReturn {
gas_left: runtime.gas_left()?.into(),
data: ReturnData::new(
::std::mem::replace(&mut self.result, Vec::with_capacity(DEFAULT_RESULT_BUFFER)),
0,
len,
),
apply_state: true,
})
}
}
}
fn native_bindings<'a>(runtime: &'a mut Runtime) -> interpreter::UserFunctions<'a> {
interpreter::UserFunctions {
executor: runtime,
functions: ::std::borrow::Cow::from(env::SIGNATURES),
}
}

View File

@ -0,0 +1,52 @@
// Copyright 2015-2017 Parity Technologies (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/>.
//! Wasm bound-checked ptr
use parity_wasm::interpreter;
/// Bound-checked wrapper for webassembly memory
pub struct WasmPtr(u32);
/// Error in bound check
#[derive(Debug)]
pub enum Error {
AccessViolation,
}
impl From<u32> for WasmPtr {
fn from(raw: u32) -> Self {
WasmPtr(raw)
}
}
impl WasmPtr {
// todo: use memory view when they are on
/// Check memory range and return data with given length starting from the current pointer value
pub fn slice(&self, len: u32, mem: &interpreter::MemoryInstance) -> Result<Vec<u8>, Error> {
mem.get(self.0, len as usize).map_err(|_| Error::AccessViolation)
}
// todo: maybe 2gb limit can be enhanced
/// Convert i32 from wasm stack to the wrapped pointer
pub fn from_i32(raw_ptr: i32) -> Result<Self, Error> {
if raw_ptr < 0 { return Err(Error::AccessViolation); }
Ok(WasmPtr(raw_ptr as u32))
}
/// Return pointer raw value
pub fn as_raw(&self) -> u32 { self.0 }
}

View File

@ -0,0 +1,51 @@
// Copyright 2015-2017 Parity Technologies (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/>.
//! Wasm evm results helper
use byteorder::{LittleEndian, ByteOrder};
use parity_wasm::interpreter;
use super::ptr::WasmPtr;
use super::runtime::Error as RuntimeError;
/// Wrapper for wasm contract call result
pub struct WasmResult {
ptr: WasmPtr,
}
impl WasmResult {
/// New call result from given ptr
pub fn new(descriptor_ptr: WasmPtr) -> WasmResult {
WasmResult { ptr: descriptor_ptr }
}
/// Check if the result contains any data
pub fn peek_empty(&self, mem: &interpreter::MemoryInstance) -> Result<bool, RuntimeError> {
let result_len = LittleEndian::read_u32(&self.ptr.slice(16, mem)?[12..16]);
Ok(result_len == 0)
}
/// Consume the result ptr and return the actual data from wasm linear memory
pub fn pop(self, mem: &interpreter::MemoryInstance) -> Result<Vec<u8>, RuntimeError> {
let result_ptr = LittleEndian::read_u32(&self.ptr.slice(16, mem)?[8..12]);
let result_len = LittleEndian::read_u32(&self.ptr.slice(16, mem)?[12..16]);
trace!(target: "wasm", "contract result: {} bytes at @{}", result_len, result_ptr);
Ok(mem.get(result_ptr, result_len as usize)?)
}
}

View File

@ -0,0 +1,356 @@
// Copyright 2015-2017 Parity Technologies (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/>.
//! Wasm evm program runtime intstance
use std::sync::Arc;
use byteorder::{LittleEndian, ByteOrder};
use evm;
use parity_wasm::interpreter;
use util::{Address, H256, U256};
use super::ptr::{WasmPtr, Error as PtrError};
use super::call_args::CallArgs;
/// Wasm runtime error
#[derive(Debug)]
pub enum Error {
/// Storage error
Storage,
/// Allocator error
Allocator,
/// Invalid gas state during the call
InvalidGasState,
/// Memory access violation
AccessViolation,
/// Interpreter runtime error
Interpreter(interpreter::Error),
}
impl From<interpreter::Error> for Error {
fn from(err: interpreter::Error) -> Self {
Error::Interpreter(err)
}
}
impl From<PtrError> for Error {
fn from(err: PtrError) -> Self {
match err {
PtrError::AccessViolation => Error::AccessViolation,
}
}
}
/// Runtime enviroment data for wasm contract execution
pub struct Runtime<'a> {
gas_counter: u64,
gas_limit: u64,
dynamic_top: u32,
ext: &'a mut evm::Ext,
memory: Arc<interpreter::MemoryInstance>,
}
impl<'a> Runtime<'a> {
/// New runtime for wasm contract with specified params
pub fn with_params<'b>(
ext: &'b mut evm::Ext,
memory: Arc<interpreter::MemoryInstance>,
stack_space: u32,
gas_limit: u64,
) -> Runtime<'b> {
Runtime {
gas_counter: 0,
gas_limit: gas_limit,
dynamic_top: stack_space,
memory: memory,
ext: ext,
}
}
/// Write to the storage from wasm memory
pub fn storage_write(&mut self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
let mut context = context;
let val = self.pop_h256(&mut context)?;
let key = self.pop_h256(&mut context)?;
trace!(target: "wasm", "storage_write: value {} at @{}", &val, &key);
self.ext.set_storage(key, val)
.map_err(|_| interpreter::Error::Trap("Storage update error".to_owned()))?;
Ok(Some(0i32.into()))
}
/// Read from the storage to wasm memory
pub fn storage_read(&mut self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
let mut context = context;
let val_ptr = context.value_stack.pop_as::<i32>()?;
let key = self.pop_h256(&mut context)?;
let val = self.ext.storage_at(&key)
.map_err(|_| interpreter::Error::Trap("Storage read error".to_owned()))?;
self.memory.set(val_ptr as u32, &*val)?;
Ok(Some(0.into()))
}
/// Pass suicide to state runtime
pub fn suicide(&mut self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
let mut context = context;
let refund_address = self.pop_address(&mut context)?;
self.ext.suicide(&refund_address)
.map_err(|_| interpreter::Error::Trap("Suicide error".to_owned()))?;
Ok(None)
}
/// Invoke create in the state runtime
pub fn create(&mut self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
//
// method signature:
// fn create(endowment: *const u8, code_ptr: *const u8, code_len: u32, result_ptr: *mut u8) -> i32;
//
trace!(target: "wasm", "runtime: create contract");
let mut context = context;
let result_ptr = context.value_stack.pop_as::<i32>()? as u32;
trace!(target: "wasm", " result_ptr: {:?}", result_ptr);
let code_len = context.value_stack.pop_as::<i32>()? as u32;
trace!(target: "wasm", " code_len: {:?}", code_len);
let code_ptr = context.value_stack.pop_as::<i32>()? as u32;
trace!(target: "wasm", " code_ptr: {:?}", code_ptr);
let endowment = self.pop_u256(&mut context)?;
trace!(target: "wasm", " val: {:?}", endowment);
let code = self.memory.get(code_ptr, code_len as usize)?;
let gas_left = self.gas_left()
.map_err(|_| interpreter::Error::Trap("Gas state error".to_owned()))?
.into();
match self.ext.create(&gas_left, &endowment, &code, evm::CreateContractAddress::FromSenderAndCodeHash) {
evm::ContractCreateResult::Created(address, gas_left) => {
self.memory.set(result_ptr, &*address)?;
self.gas_counter = self.gas_limit - gas_left.low_u64();
trace!(target: "wasm", "runtime: create contract success (@{:?})", address);
Ok(Some(0i32.into()))
},
evm::ContractCreateResult::Failed => {
trace!(target: "wasm", "runtime: create contract fail");
Ok(Some((-1i32).into()))
}
}
}
/// Allocate memory using the wasm stack params
pub fn malloc(&mut self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
let amount = context.value_stack.pop_as::<i32>()? as u32;
let previous_top = self.dynamic_top;
self.dynamic_top = previous_top + amount;
Ok(Some((previous_top as i32).into()))
}
/// Allocate memory in wasm memory instance
pub fn alloc(&mut self, amount: u32) -> Result<u32, Error> {
let previous_top = self.dynamic_top;
self.dynamic_top = previous_top + amount;
Ok(previous_top.into())
}
/// Report gas cost with the params passed in wasm stack
fn gas(&mut self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
let amount = context.value_stack.pop_as::<i32>()? as u64;
if self.charge_gas(amount) {
Ok(None)
} else {
Err(interpreter::Error::Trap(format!("Gas exceeds limits of {}", self.gas_limit)))
}
}
fn charge_gas(&mut self, amount: u64) -> bool {
let prev = self.gas_counter;
if prev + amount > self.gas_limit {
// exceeds gas
false
} else {
self.gas_counter = prev + amount;
true
}
}
fn h256_at(&self, ptr: WasmPtr) -> Result<H256, interpreter::Error> {
Ok(H256::from_slice(&ptr.slice(32, &*self.memory)
.map_err(|_| interpreter::Error::Trap("Memory access violation".to_owned()))?
))
}
fn pop_h256(&self, context: &mut interpreter::CallerContext) -> Result<H256, interpreter::Error> {
let ptr = WasmPtr::from_i32(context.value_stack.pop_as::<i32>()?)
.map_err(|_| interpreter::Error::Trap("Memory access violation".to_owned()))?;
self.h256_at(ptr)
}
fn pop_u256(&self, context: &mut interpreter::CallerContext) -> Result<U256, interpreter::Error> {
let ptr = WasmPtr::from_i32(context.value_stack.pop_as::<i32>()?)
.map_err(|_| interpreter::Error::Trap("Memory access violation".to_owned()))?;
self.h256_at(ptr).map(Into::into)
}
fn address_at(&self, ptr: WasmPtr) -> Result<Address, interpreter::Error> {
Ok(Address::from_slice(&ptr.slice(20, &*self.memory)
.map_err(|_| interpreter::Error::Trap("Memory access violation".to_owned()))?
))
}
fn pop_address(&self, context: &mut interpreter::CallerContext) -> Result<Address, interpreter::Error> {
let ptr = WasmPtr::from_i32(context.value_stack.pop_as::<i32>()?)
.map_err(|_| interpreter::Error::Trap("Memory access violation".to_owned()))?;
self.address_at(ptr)
}
fn user_trap(&mut self, _context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
Err(interpreter::Error::Trap("unknown trap".to_owned()))
}
fn user_noop(&mut self,
_context: interpreter::CallerContext
) -> Result<Option<interpreter::RuntimeValue>, interpreter::Error> {
Ok(None)
}
/// Write call descriptor to wasm memory
pub fn write_descriptor(&mut self, call_args: CallArgs) -> Result<WasmPtr, Error> {
let d_ptr = self.alloc(16)?;
let args_len = call_args.len();
let args_ptr = self.alloc(args_len)?;
// write call descriptor
// call descriptor is [args_ptr, args_len, return_ptr, return_len]
// all are 4 byte length, last 2 are zeroed
let mut d_buf = [0u8; 16];
LittleEndian::write_u32(&mut d_buf[0..4], args_ptr);
LittleEndian::write_u32(&mut d_buf[4..8], args_len);
self.memory.set(d_ptr, &d_buf)?;
// write call args to memory
self.memory.set(args_ptr, &call_args.address)?;
self.memory.set(args_ptr+20, &call_args.sender)?;
self.memory.set(args_ptr+40, &call_args.origin)?;
self.memory.set(args_ptr+60, &call_args.value)?;
self.memory.set(args_ptr+92, &call_args.data)?;
Ok(d_ptr.into())
}
fn debug_log(&mut self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
let msg_len = context.value_stack.pop_as::<i32>()? as u32;
let msg_ptr = context.value_stack.pop_as::<i32>()? as u32;
let msg = String::from_utf8(self.memory.get(msg_ptr, msg_len as usize)?)
.map_err(|_| interpreter::Error::Trap("Debug log utf-8 decoding error".to_owned()))?;
trace!(target: "wasm", "Contract debug message: {}", msg);
Ok(None)
}
/// Query current gas left for execution
pub fn gas_left(&self) -> Result<u64, Error> {
if self.gas_counter > self.gas_limit { return Err(Error::InvalidGasState); }
Ok(self.gas_limit - self.gas_counter)
}
/// Shared memory reference
pub fn memory(&self) -> &interpreter::MemoryInstance {
&*self.memory
}
fn mem_copy(&self, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
let len = context.value_stack.pop_as::<i32>()? as u32;
let dst = context.value_stack.pop_as::<i32>()? as u32;
let src = context.value_stack.pop_as::<i32>()? as u32;
let mem = self.memory().get(src, len as usize)?;
self.memory().set(dst, &mem)?;
Ok(Some(0i32.into()))
}
}
impl<'a> interpreter::UserFunctionExecutor for Runtime<'a> {
fn execute(&mut self, name: &str, context: interpreter::CallerContext)
-> Result<Option<interpreter::RuntimeValue>, interpreter::Error>
{
match name {
"_malloc" => {
self.malloc(context)
},
"_free" => {
// Since it is arena allocator, free does nothing
// todo: update if changed
self.user_noop(context)
},
"_storage_read" => {
self.storage_read(context)
},
"_storage_write" => {
self.storage_write(context)
},
"_suicide" => {
self.suicide(context)
},
"_create" => {
self.create(context)
},
"_debug" => {
self.debug_log(context)
},
"gas" => {
self.gas(context)
},
"_emscripten_memcpy_big" => {
self.mem_copy(context)
},
_ => {
trace!("Unknown env func: '{}'", name);
self.user_trap(context)
}
}
}
}

View File

@ -0,0 +1,279 @@
use std::path::PathBuf;
use std::fs::File;
use std::io::Read;
use std::sync::Arc;
use ethcore_logger::init_log;
use super::super::tests::{FakeExt, FakeCall, FakeCallType};
use super::WasmInterpreter;
use evm::{self, Evm, GasLeft};
use action_params::{ActionParams, ActionValue};
use util::{U256, H256, Address};
fn load_sample(name: &str) -> Vec<u8> {
let mut path = PathBuf::from("./res/wasm-tests/compiled");
path.push(name);
let mut file = File::open(path).expect(&format!("File {} for test to exist", name));
let mut data = vec![];
file.read_to_end(&mut data).expect(&format!("Test {} to load ok", name));
data
}
fn test_finalize(res: Result<GasLeft, evm::Error>) -> Result<U256, evm::Error> {
match res {
Ok(GasLeft::Known(gas)) => Ok(gas),
Ok(GasLeft::NeedsReturn{..}) => unimplemented!(), // since ret is unimplemented.
Err(e) => Err(e),
}
}
fn wasm_interpreter() -> WasmInterpreter {
WasmInterpreter::new().expect("wasm interpreter to create without errors")
}
/// Empty contract does almost nothing except producing 1 (one) local node debug log message
#[test]
fn empty() {
init_log();
let code = load_sample("empty.wasm");
let address: Address = "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6".parse().unwrap();
let mut params = ActionParams::default();
params.address = address.clone();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(code));
let mut ext = FakeExt::new();
let gas_left = {
let mut interpreter = wasm_interpreter();
test_finalize(interpreter.exec(params, &mut ext)).unwrap()
};
assert_eq!(gas_left, U256::from(99_996));
}
// This test checks if the contract deserializes payload header properly.
// Contract is provided with receiver(address), sender, origin and transaction value
// logger.wasm writes all these provided fixed header fields to some arbitrary storage keys.
#[test]
fn logger() {
init_log();
let code = load_sample("logger.wasm");
let address: Address = "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6".parse().unwrap();
let sender: Address = "0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d".parse().unwrap();
let origin: Address = "0102030405060708090a0b0c0d0e0f1011121314".parse().unwrap();
let mut params = ActionParams::default();
params.address = address.clone();
params.sender = sender.clone();
params.origin = origin.clone();
params.gas = U256::from(100_000);
params.value = ActionValue::transfer(1_000_000_000);
params.code = Some(Arc::new(code));
let mut ext = FakeExt::new();
let gas_left = {
let mut interpreter = wasm_interpreter();
test_finalize(interpreter.exec(params, &mut ext)).unwrap()
};
println!("ext.store: {:?}", ext.store);
assert_eq!(gas_left, U256::from(99581));
let address_val: H256 = address.into();
assert_eq!(
ext.store.get(&"0100000000000000000000000000000000000000000000000000000000000000".parse().unwrap()).expect("storage key to exist"),
&address_val,
"Logger sets 0x01 key to the provided address"
);
let sender_val: H256 = sender.into();
assert_eq!(
ext.store.get(&"0200000000000000000000000000000000000000000000000000000000000000".parse().unwrap()).expect("storage key to exist"),
&sender_val,
"Logger sets 0x02 key to the provided sender"
);
let origin_val: H256 = origin.into();
assert_eq!(
ext.store.get(&"0300000000000000000000000000000000000000000000000000000000000000".parse().unwrap()).expect("storage key to exist"),
&origin_val,
"Logger sets 0x03 key to the provided origin"
);
assert_eq!(
U256::from(ext.store.get(&"0400000000000000000000000000000000000000000000000000000000000000".parse().unwrap()).expect("storage key to exist")),
U256::from(1_000_000_000),
"Logger sets 0x04 key to the trasferred value"
);
}
// This test checks if the contract can allocate memory and pass pointer to the result stream properly.
// 1. Contract is being provided with the call descriptor ptr
// 2. Descriptor ptr is 16 byte length
// 3. The last 8 bytes of call descriptor is the space for the contract to fill [result_ptr[4], result_len[4]]
// if it has any result.
#[test]
fn identity() {
init_log();
let code = load_sample("identity.wasm");
let sender: Address = "01030507090b0d0f11131517191b1d1f21232527".parse().unwrap();
let mut params = ActionParams::default();
params.sender = sender.clone();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(code));
let mut ext = FakeExt::new();
let (gas_left, result) = {
let mut interpreter = wasm_interpreter();
let result = interpreter.exec(params, &mut ext).expect("Interpreter to execute without any errors");
match result {
GasLeft::Known(_) => { panic!("Identity contract should return payload"); },
GasLeft::NeedsReturn { gas_left: gas, data: result, apply_state: _apply } => (gas, result.to_vec()),
}
};
assert_eq!(gas_left, U256::from(99_689));
assert_eq!(
Address::from_slice(&result),
sender,
"Idenity test contract does not return the sender passed"
);
}
// Dispersion test sends byte array and expect the contract to 'disperse' the original elements with
// their modulo 19 dopant.
// The result is always twice as long as the input.
// This also tests byte-perfect memory allocation and in/out ptr lifecycle.
#[test]
fn dispersion() {
init_log();
let code = load_sample("dispersion.wasm");
let mut params = ActionParams::default();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(code));
params.data = Some(vec![
0u8, 125, 197, 255, 19
]);
let mut ext = FakeExt::new();
let (gas_left, result) = {
let mut interpreter = wasm_interpreter();
let result = interpreter.exec(params, &mut ext).expect("Interpreter to execute without any errors");
match result {
GasLeft::Known(_) => { panic!("Dispersion routine should return payload"); },
GasLeft::NeedsReturn { gas_left: gas, data: result, apply_state: _apply } => (gas, result.to_vec()),
}
};
assert_eq!(gas_left, U256::from(99_402));
assert_eq!(
result,
vec![0u8, 0, 125, 11, 197, 7, 255, 8, 19, 0]
);
}
#[test]
fn suicide_not() {
init_log();
let code = load_sample("suicidal.wasm");
let mut params = ActionParams::default();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(code));
params.data = Some(vec![
0u8
]);
let mut ext = FakeExt::new();
let (gas_left, result) = {
let mut interpreter = wasm_interpreter();
let result = interpreter.exec(params, &mut ext).expect("Interpreter to execute without any errors");
match result {
GasLeft::Known(_) => { panic!("Suicidal contract should return payload when had not actualy killed himself"); },
GasLeft::NeedsReturn { gas_left: gas, data: result, apply_state: _apply } => (gas, result.to_vec()),
}
};
assert_eq!(gas_left, U256::from(99_703));
assert_eq!(
result,
vec![0u8]
);
}
#[test]
fn suicide() {
init_log();
let code = load_sample("suicidal.wasm");
let refund: Address = "01030507090b0d0f11131517191b1d1f21232527".parse().unwrap();
let mut params = ActionParams::default();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(code));
let mut args = vec![127u8];
args.extend(refund.to_vec());
params.data = Some(args);
let mut ext = FakeExt::new();
let gas_left = {
let mut interpreter = wasm_interpreter();
let result = interpreter.exec(params, &mut ext).expect("Interpreter to execute without any errors");
match result {
GasLeft::Known(gas) => gas,
GasLeft::NeedsReturn { .. } => {
panic!("Suicidal contract should not return anything when had killed itself");
},
}
};
assert_eq!(gas_left, U256::from(99_747));
assert!(ext.suicides.contains(&refund));
}
#[test]
fn create() {
init_log();
let mut params = ActionParams::default();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(load_sample("creator.wasm")));
params.data = Some(vec![0u8, 2, 4, 8, 16, 32, 64, 128]);
params.value = ActionValue::transfer(1_000_000_000);
let mut ext = FakeExt::new();
let gas_left = {
let mut interpreter = wasm_interpreter();
let result = interpreter.exec(params, &mut ext).expect("Interpreter to execute without any errors");
match result {
GasLeft::Known(gas) => gas,
GasLeft::NeedsReturn { .. } => {
panic!("Create contract should not return anthing because ext always fails on creation");
},
}
};
trace!(target: "wasm", "fake_calls: {:?}", &ext.calls);
assert!(ext.calls.contains(
&FakeCall {
call_type: FakeCallType::Create,
gas: U256::from(99_778),
sender_address: None,
receive_address: None,
value: Some(1_000_000_000.into()),
data: vec![0u8, 2, 4, 8, 16, 32, 64, 128],
code_address: None,
}
));
assert_eq!(gas_left, U256::from(99_768));
}

View File

@ -22,7 +22,7 @@ use engines::Engine;
use types::executed::CallType;
use env_info::EnvInfo;
use error::ExecutionError;
use evm::{self, Ext, Finalize, CreateContractAddress, FinalizationResult, ReturnData, CleanDustMode};
use evm::{self, wasm, Factory, Ext, Finalize, CreateContractAddress, FinalizationResult, ReturnData, CleanDustMode};
use externalities::*;
use trace::{FlatTrace, Tracer, NoopTracer, ExecutiveTracer, VMTrace, VMTracer, ExecutiveVMTracer, NoopVMTracer};
use transaction::{Action, SignedTransaction};
@ -34,6 +34,8 @@ pub use types::executed::{Executed, ExecutionResult};
/// Maybe something like here: `https://github.com/ethereum/libethereum/blob/4db169b8504f2b87f7d5a481819cfb959fc65f6c/libethereum/ExtVM.cpp`
const STACK_SIZE_PER_DEPTH: usize = 24*1024;
const WASM_MAGIC_NUMBER: &'static [u8; 4] = b"\0asm";
/// Returns new address created from address, nonce, and code hash
pub fn contract_address(address_scheme: CreateContractAddress, sender: &Address, nonce: &U256, code: &[u8]) -> (Address, Option<H256>) {
use rlp::RlpStream;
@ -72,6 +74,20 @@ pub struct TransactOptions {
pub check_nonce: bool,
}
pub fn executor<E>(engine: &E, vm_factory: &Factory, params: &ActionParams)
-> Box<evm::Evm> where E: Engine + ?Sized
{
if engine.supports_wasm() && params.code.as_ref().map_or(false, |code| code.len() > 4 && &code[0..4] == WASM_MAGIC_NUMBER) {
Box::new(
wasm::WasmInterpreter::new()
// prefer to fail fast
.expect("Failed to create wasm runtime")
)
} else {
vm_factory.create(params.gas)
}
}
/// Transaction executor.
pub struct Executive<'a, B: 'a + StateBackend, E: 'a + Engine + ?Sized> {
state: &'a mut State<B>,
@ -263,18 +279,19 @@ impl<'a, B: 'a + StateBackend, E: Engine + ?Sized> Executive<'a, B, E> {
let vm_factory = self.state.vm_factory();
let mut ext = self.as_externalities(OriginInfo::from(&params), unconfirmed_substate, output_policy, tracer, vm_tracer, static_call);
trace!(target: "executive", "ext.schedule.have_delegate_call: {}", ext.schedule().have_delegate_call);
return vm_factory.create(params.gas).exec(params, &mut ext).finalize(ext);
return executor(self.engine, &vm_factory, &params).exec(params, &mut ext).finalize(ext);
}
// Start in new thread to reset stack
// TODO [todr] No thread builder yet, so we need to reset once for a while
// https://github.com/aturon/crossbeam/issues/16
crossbeam::scope(|scope| {
let engine = self.engine;
let vm_factory = self.state.vm_factory();
let mut ext = self.as_externalities(OriginInfo::from(&params), unconfirmed_substate, output_policy, tracer, vm_tracer, static_call);
scope.spawn(move || {
vm_factory.create(params.gas).exec(params, &mut ext).finalize(ext)
executor(engine, &vm_factory, &params).exec(params, &mut ext).finalize(ext)
})
}).join()
}
@ -562,6 +579,7 @@ impl<'a, B: 'a + StateBackend, E: Engine + ?Sized> Executive<'a, B, E> {
| Err(evm::Error::BadInstruction {.. })
| Err(evm::Error::StackUnderflow {..})
| Err(evm::Error::BuiltIn {..})
| Err(evm::Error::Wasm {..})
| Err(evm::Error::OutOfStack {..})
| Err(evm::Error::MutableCallInStaticContext)
| Ok(FinalizationResult { apply_state: false, .. }) => {

View File

@ -105,6 +105,8 @@ extern crate semver;
extern crate stats;
extern crate time;
extern crate transient_hashmap;
extern crate parity_wasm;
extern crate wasm_utils;
#[macro_use]
extern crate log;

View File

@ -80,9 +80,11 @@ pub struct CommonParams {
/// Number of first block where dust cleanup rules (EIP-168 and EIP169) begin.
pub dust_protection_transition: BlockNumber,
/// Nonce cap increase per block. Nonce cap is only checked if dust protection is enabled.
pub nonce_cap_increment : u64,
pub nonce_cap_increment: u64,
/// Enable dust cleanup for contracts.
pub remove_dust_contracts : bool,
pub remove_dust_contracts: bool,
/// Wasm support
pub wasm: bool,
}
impl From<ethjson::spec::Params> for CommonParams {
@ -110,6 +112,7 @@ impl From<ethjson::spec::Params> for CommonParams {
dust_protection_transition: p.dust_protection_transition.map_or(BlockNumber::max_value(), Into::into),
nonce_cap_increment: p.nonce_cap_increment.map_or(64, Into::into),
remove_dust_contracts: p.remove_dust_contracts.unwrap_or(false),
wasm: p.wasm.unwrap_or(false),
}
}
}

View File

@ -42,6 +42,8 @@ pub enum Error {
Internal,
/// When execution tries to modify the state in static context
MutableCallInStaticContext,
/// Wasm error
Wasm,
}
impl<'a> From<&'a EvmError> for Error {
@ -53,6 +55,7 @@ impl<'a> From<&'a EvmError> for Error {
EvmError::StackUnderflow { .. } => Error::StackUnderflow,
EvmError::OutOfStack { .. } => Error::OutOfStack,
EvmError::BuiltIn { .. } => Error::BuiltIn,
EvmError::Wasm { .. } => Error::Wasm,
EvmError::Internal(_) => Error::Internal,
EvmError::MutableCallInStaticContext => Error::MutableCallInStaticContext,
}
@ -75,6 +78,7 @@ impl fmt::Display for Error {
StackUnderflow => "Stack underflow",
OutOfStack => "Out of stack",
BuiltIn => "Built-in failed",
Wasm => "Wasm runtime error",
Internal => "Internal error",
MutableCallInStaticContext => "Mutable Call In Static Context",
};
@ -94,6 +98,7 @@ impl Encodable for Error {
Internal => 5,
BuiltIn => 6,
MutableCallInStaticContext => 7,
Wasm => 8,
};
s.append_internal(&value);
@ -113,6 +118,7 @@ impl Decodable for Error {
5 => Ok(Internal),
6 => Ok(BuiltIn),
7 => Ok(MutableCallInStaticContext),
8 => Ok(Wasm),
_ => Err(DecoderError::Custom("Invalid error type")),
}
}

View File

@ -89,6 +89,8 @@ pub struct Params {
pub nonce_cap_increment: Option<Uint>,
/// See `CommonParams` docs.
pub remove_dust_contracts : Option<bool>,
/// Wasm support flag
pub wasm: Option<bool>,
}
#[cfg(test)]