Merge pull request #7101 from paritytech/secretstore_kovan

SecretStore: Kovan integration initial version

ethcore/native_contracts/build.rs

@@ -26,6 +26,7 @@ const REGISTRY_ABI: &'static str = include_str!("res/registrar.json");
 const URLHINT_ABI: &'static str = include_str!("res/urlhint.json");
 const SERVICE_TRANSACTION_ABI: &'static str = include_str!("res/service_transaction.json");
 const SECRETSTORE_ACL_STORAGE_ABI: &'static str = include_str!("res/secretstore_acl_storage.json");
+const SECRETSTORE_SERVICE_ABI: &'static str = include_str!("res/secretstore_service.json");
 const VALIDATOR_SET_ABI: &'static str = include_str!("res/validator_set.json");
 const VALIDATOR_REPORT_ABI: &'static str = include_str!("res/validator_report.json");
 const PEER_SET_ABI: &'static str = include_str!("res/peer_set.json");
@@ -53,6 +54,7 @@ fn main() {
 	build_file("Urlhint", URLHINT_ABI, "urlhint.rs");
 	build_file("ServiceTransactionChecker", SERVICE_TRANSACTION_ABI, "service_transaction.rs");
 	build_file("SecretStoreAclStorage", SECRETSTORE_ACL_STORAGE_ABI, "secretstore_acl_storage.rs");
+	build_file("SecretStoreService", SECRETSTORE_SERVICE_ABI, "secretstore_service.rs");
 	build_file("ValidatorSet", VALIDATOR_SET_ABI, "validator_set.rs");
 	build_file("ValidatorReport", VALIDATOR_REPORT_ABI, "validator_report.rs");
 	build_file("PeerSet", PEER_SET_ABI, "peer_set.rs");

ethcore/native_contracts/generator/src/lib.rs

@@ -46,7 +46,7 @@ pub fn generate_module(struct_name: &str, abi: &str) -> Result<String, Error> {
 	Ok(format!(r##"
 use byteorder::{{BigEndian, ByteOrder}};
 use futures::{{future, Future, IntoFuture}};
-use ethabi::{{Contract, Token, Event}};
+use ethabi::{{Bytes, Contract, Token, Event}};
 use bigint;
 
 type BoxFuture<A, B> = Box<Future<Item = A, Error = B> + Send>;
@@ -96,7 +96,7 @@ fn generate_functions(contract: &Contract) -> Result<String, Error> {
 		let inputs: Vec<_> = function.inputs.iter().map(|i| i.kind.clone()).collect();
 		let outputs: Vec<_> = function.outputs.iter().map(|i| i.kind.clone()).collect();
 
-		let (input_params, to_tokens) = input_params_codegen(&inputs)
+		let (input_params, input_names, to_tokens) = input_params_codegen(&inputs)
 			.map_err(|bad_type| Error::UnsupportedType(name.clone(), bad_type))?;
 
 		let (output_type, decode_outputs) = output_params_codegen(&outputs)
@@ -113,14 +113,14 @@ pub fn {snake_name}<F, U>(&self, call: F, {params}) -> BoxFuture<{output_type},
 	    U: IntoFuture<Item=Vec<u8>, Error=String>,
 		U::Future: Send + 'static
 {{
+	let call_addr = self.address;
+	let call_future = match self.encode_{snake_name}_input({params_names}) {{
+		Ok(call_data) => (call)(call_addr, call_data),
+		Err(e) => return Box::new(future::err(e)),
+	}};
+
 	let function = self.contract.function(r#"{abi_name}"#)
 		.expect("function existence checked at compile-time; qed").clone();
-	let call_addr = self.address;
-
-	let call_future = match function.encode_input(&{to_tokens}) {{
-		Ok(call_data) => (call)(call_addr, call_data),
-		Err(e) => return Box::new(future::err(format!("Error encoding call: {{:?}}", e))),
-	}};
 
 	Box::new(call_future
 		.into_future()
@@ -128,12 +128,22 @@ pub fn {snake_name}<F, U>(&self, call: F, {params}) -> BoxFuture<{output_type},
 		.map(Vec::into_iter)
 		.and_then(|mut outputs| {decode_outputs}))
 }}
+
+/// Encode "{abi_name}" function arguments.
+/// Arguments: {abi_inputs:?}
+pub fn encode_{snake_name}_input(&self, {params}) -> Result<Vec<u8>, String> {{
+	self.contract.function(r#"{abi_name}"#)
+		.expect("function existence checked at compile-time; qed")
+		.encode_input(&{to_tokens})
+		.map_err(|e| format!("Error encoding call: {{:?}}", e))
+}}
 	"##,
 		abi_name = name,
 		abi_inputs = inputs,
 		abi_outputs = outputs,
 		snake_name = snake_name,
 		params = input_params,
+		params_names = input_names,
 		output_type = output_type,
 		to_tokens = to_tokens,
 		decode_outputs = decode_outputs,
@@ -145,15 +155,17 @@ pub fn {snake_name}<F, U>(&self, call: F, {params}) -> BoxFuture<{output_type},
 
 // generate code for params in function signature and turning them into tokens.
 //
-// two pieces of code are generated: the first gives input types for the function signature,
-// and the second gives code to tokenize those inputs.
+// three pieces of code are generated: the first gives input types for the function signature,
+// the second one gives input parameter names to pass to another method,
+// and the third gives code to tokenize those inputs.
 //
 // params of form `param_0: type_0, param_1: type_1, ...`
 // tokenizing code of form `{let mut tokens = Vec::new(); tokens.push({param_X}); tokens }`
 //
 // returns any unsupported param type encountered.
-fn input_params_codegen(inputs: &[ParamType]) -> Result<(String, String), ParamType> {
+fn input_params_codegen(inputs: &[ParamType]) -> Result<(String, String, String), ParamType> {
 	let mut params = String::new();
+	let mut params_names = String::new();
 	let mut to_tokens = "{ let mut tokens = Vec::new();".to_string();
 
 	for (index, param_type) in inputs.iter().enumerate() {
@@ -164,11 +176,13 @@ fn input_params_codegen(inputs: &[ParamType]) -> Result<(String, String), ParamT
 		params.push_str(&format!("{}{}: {}, ",
 			if needs_mut { "mut " } else { "" }, param_name, rust_type));
 
+		params_names.push_str(&format!("{}, ", param_name));
+
 		to_tokens.push_str(&format!("tokens.push({{ {} }});", tokenize_code));
 	}
 
 	to_tokens.push_str(" tokens }");
-	Ok((params, to_tokens))
+	Ok((params, params_names, to_tokens))
 }
 
 // generate code for outputs of the function and detokenizing them.

ethcore/native_contracts/res/secretstore_service.json

@@ -0,0 +1,8 @@
+[
+	{"constant":true,"inputs":[],"name":"serverKeyGenerationRequestsCount","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},
+	{"constant":true,"inputs":[{"name":"index","type":"uint256"}],"name":"getServerKeyId","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},
+	{"constant":false,"inputs":[{"name":"serverKeyId","type":"bytes32"},{"name":"serverKeyPublic","type":"bytes"},{"name":"v","type":"uint8"},{"name":"r","type":"bytes32"},{"name":"s","type":"bytes32"}],"name":"serverKeyGenerated","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},
+	{"constant":true,"inputs":[{"name":"serverKeyId","type":"bytes32"}],"name":"getServerKeyThreshold","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},
+	{"constant":true,"inputs":[{"name":"serverKeyId","type":"bytes32"},{"name":"authority","type":"address"}],"name":"getServerKeyConfirmationStatus","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},
+	{"anonymous":false,"inputs":[{"indexed":true,"name":"serverKeyId","type":"bytes32"},{"indexed":true,"name":"threshold","type":"uint256"}],"name":"ServerKeyRequested","type":"event"}
+]

ethcore/native_contracts/src/lib.rs

@@ -28,6 +28,7 @@ mod registry;
 mod urlhint;
 mod service_transaction;
 mod secretstore_acl_storage;
+mod secretstore_service;
 mod validator_set;
 mod validator_report;
 mod peer_set;
@@ -40,6 +41,7 @@ pub use self::registry::Registry;
 pub use self::urlhint::Urlhint;
 pub use self::service_transaction::ServiceTransactionChecker;
 pub use self::secretstore_acl_storage::SecretStoreAclStorage;
+pub use self::secretstore_service::SecretStoreService;
 pub use self::validator_set::ValidatorSet;
 pub use self::validator_report::ValidatorReport;
 pub use self::peer_set::PeerSet;

ethcore/native_contracts/src/secretstore_service.rs

@@ -0,0 +1,21 @@
+// 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/>.
+
+#![allow(unused_mut, unused_variables, unused_imports)]
+
+//! Secret store service contract.
+
+include!(concat!(env!("OUT_DIR"), "/secretstore_service.rs"));