openethereum/rpc/src/v1/impls/eth_signing.rs

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// 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/>.
//! Eth Signing RPC implementation.
use std::sync::{Arc, Weak};
use jsonrpc_core::*;
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use ethcore::miner::MinerService;
use ethcore::client::MiningBlockChainClient;
use util::numbers::*;
use ethcore::account_provider::AccountProvider;
use v1::helpers::{SigningQueue, ConfirmationsQueue};
use v1::traits::EthSigning;
use v1::types::{TransactionRequest, Bytes};
use v1::impls::{default_gas_price, sign_and_dispatch};
fn fill_optional_fields<C, M>(request: &mut TransactionRequest, client: &C, miner: &M)
where C: MiningBlockChainClient, M: MinerService {
if request.gas.is_none() {
request.gas = Some(miner.sensible_gas_limit());
}
if request.gas_price.is_none() {
request.gas_price = Some(default_gas_price(client, miner));
}
if request.data.is_none() {
request.data = Some(Bytes::new(Vec::new()));
}
}
/// Implementation of functions that require signing when no trusted signer is used.
pub struct EthSigningQueueClient<C, M> where C: MiningBlockChainClient, M: MinerService {
queue: Weak<ConfirmationsQueue>,
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accounts: Weak<AccountProvider>,
client: Weak<C>,
miner: Weak<M>,
}
impl<C, M> EthSigningQueueClient<C, M> where C: MiningBlockChainClient, M: MinerService {
/// Creates a new signing queue client given shared signing queue.
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pub fn new(queue: &Arc<ConfirmationsQueue>, client: &Arc<C>, miner: &Arc<M>, accounts: &Arc<AccountProvider>) -> Self {
EthSigningQueueClient {
queue: Arc::downgrade(queue),
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accounts: Arc::downgrade(accounts),
client: Arc::downgrade(client),
miner: Arc::downgrade(miner),
}
}
}
impl<C, M> EthSigning for EthSigningQueueClient<C, M>
where C: MiningBlockChainClient + 'static, M: MinerService + 'static
{
fn sign(&self, _params: Params) -> Result<Value, Error> {
warn!("Invoking eth_sign is not yet supported with signer enabled.");
// TODO [ToDr] Implement sign when rest of the signing queue is ready.
rpc_unimplemented!()
}
fn send_transaction(&self, params: Params) -> Result<Value, Error> {
from_params::<(TransactionRequest, )>(params)
.and_then(|(mut request, )| {
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let accounts = take_weak!(self.accounts);
let (client, miner) = (take_weak!(self.client), take_weak!(self.miner));
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if accounts.is_unlocked(request.from) {
let sender = request.from;
return match sign_and_dispatch(&*client, &*miner, request, &*accounts, sender) {
Ok(hash) => to_value(&hash),
_ => to_value(&H256::zero()),
}
}
let queue = take_weak!(self.queue);
fill_optional_fields(&mut request, &*client, &*miner);
let id = queue.add_request(request);
let result = id.wait_with_timeout();
result.unwrap_or_else(|| to_value(&H256::new()))
})
}
}
/// Implementation of functions that require signing when no trusted signer is used.
pub struct EthSigningUnsafeClient<C, M> where
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C: MiningBlockChainClient,
M: MinerService {
client: Weak<C>,
accounts: Weak<AccountProvider>,
miner: Weak<M>,
}
impl<C, M> EthSigningUnsafeClient<C, M> where
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C: MiningBlockChainClient,
M: MinerService {
/// Creates new EthClient.
pub fn new(client: &Arc<C>, accounts: &Arc<AccountProvider>, miner: &Arc<M>)
-> Self {
EthSigningUnsafeClient {
client: Arc::downgrade(client),
miner: Arc::downgrade(miner),
accounts: Arc::downgrade(accounts),
}
}
}
impl<C, M> EthSigning for EthSigningUnsafeClient<C, M> where
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C: MiningBlockChainClient + 'static,
M: MinerService + 'static {
fn sign(&self, params: Params) -> Result<Value, Error> {
from_params::<(Address, H256)>(params).and_then(|(addr, msg)| {
to_value(&take_weak!(self.accounts).sign(addr, msg).unwrap_or(H520::zero()))
})
}
fn send_transaction(&self, params: Params) -> Result<Value, Error> {
from_params::<(TransactionRequest, )>(params)
.and_then(|(request, )| {
let sender = request.from;
match sign_and_dispatch(&*take_weak!(self.client), &*take_weak!(self.miner), request, &*take_weak!(self.accounts), sender) {
Ok(hash) => to_value(&hash),
_ => to_value(&H256::zero()),
}
})
}
}