openethereum/rpc/src/v1/impls/personal_signer.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/>.
//! Transactions Confirmations (personal) rpc implementation
use std::sync::{Arc, Weak};
use jsonrpc_core::*;
use v1::traits::PersonalSigner;
use v1::types::TransactionModification;
use v1::impls::sign_and_dispatch;
use v1::helpers::{SigningQueue, ConfirmationsQueue};
use util::keys::store::AccountProvider;
use util::numbers::*;
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use ethcore::client::MiningBlockChainClient;
use ethcore::miner::MinerService;
/// Transactions confirmation (personal) rpc implementation.
pub struct SignerClient<A, C, M>
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where A: AccountProvider, C: MiningBlockChainClient, M: MinerService {
queue: Weak<ConfirmationsQueue>,
accounts: Weak<A>,
client: Weak<C>,
miner: Weak<M>,
}
impl<A: 'static, C: 'static, M: 'static> SignerClient<A, C, M>
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where A: AccountProvider, C: MiningBlockChainClient, M: MinerService {
/// Create new instance of signer client.
pub fn new(store: &Arc<A>, client: &Arc<C>, miner: &Arc<M>, queue: &Arc<ConfirmationsQueue>) -> Self {
SignerClient {
queue: Arc::downgrade(queue),
accounts: Arc::downgrade(store),
client: Arc::downgrade(client),
miner: Arc::downgrade(miner),
}
}
}
impl<A: 'static, C: 'static, M: 'static> PersonalSigner for SignerClient<A, C, M>
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where A: AccountProvider, C: MiningBlockChainClient, M: MinerService {
fn transactions_to_confirm(&self, _params: Params) -> Result<Value, Error> {
let queue = take_weak!(self.queue);
to_value(&queue.requests())
}
fn confirm_transaction(&self, params: Params) -> Result<Value, Error> {
from_params::<(U256, TransactionModification, String)>(params).and_then(
|(id, modification, pass)| {
let accounts = take_weak!(self.accounts);
let queue = take_weak!(self.queue);
queue.remove_request(id)
.and_then(|confirmation| {
let mut request = confirmation.transaction;
// apply modification
if let Some(gas_price) = modification.gas_price {
request.gas_price = Some(gas_price);
}
match accounts.locked_account_secret(&request.from, &pass) {
Ok(secret) => Some(sign_and_dispatch(&self.client, &self.miner, request, secret)),
Err(_) => None
}
})
.unwrap_or_else(|| to_value(&H256::zero()))
}
)
}
fn reject_transaction(&self, params: Params) -> Result<Value, Error> {
from_params::<(U256, )>(params).and_then(
|(id, )| {
let queue = take_weak!(self.queue);
let res = queue.remove_request(id);
to_value(&res.is_some())
}
)
}
}