125 lines
3.8 KiB
Rust
125 lines
3.8 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Transactions Confirmations rpc implementation
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use std::sync::{Arc, Weak};
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use jsonrpc_core::*;
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use ethcore::account_provider::AccountProvider;
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use ethcore::client::MiningBlockChainClient;
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use ethcore::miner::MinerService;
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use v1::traits::Signer;
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use v1::types::{TransactionModification, ConfirmationRequest, U256};
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use v1::helpers::{errors, SignerService, SigningQueue, ConfirmationPayload};
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use v1::helpers::dispatch::{sign_and_dispatch, sign, decrypt};
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/// Transactions confirmation (personal) rpc implementation.
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pub struct SignerClient<C, M> where C: MiningBlockChainClient, M: MinerService {
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signer: Weak<SignerService>,
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accounts: Weak<AccountProvider>,
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client: Weak<C>,
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miner: Weak<M>,
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}
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impl<C: 'static, M: 'static> SignerClient<C, M> where C: MiningBlockChainClient, M: MinerService {
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/// Create new instance of signer client.
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pub fn new(
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store: &Arc<AccountProvider>,
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client: &Arc<C>,
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miner: &Arc<M>,
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signer: &Arc<SignerService>,
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) -> Self {
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SignerClient {
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signer: Arc::downgrade(signer),
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accounts: Arc::downgrade(store),
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client: Arc::downgrade(client),
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miner: Arc::downgrade(miner),
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}
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}
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fn active(&self) -> Result<(), Error> {
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// TODO: only call every 30s at most.
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take_weak!(self.client).keep_alive();
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Ok(())
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}
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}
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impl<C: 'static, M: 'static> Signer for SignerClient<C, M> where C: MiningBlockChainClient, M: MinerService {
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fn requests_to_confirm(&self) -> Result<Vec<ConfirmationRequest>, Error> {
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try!(self.active());
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let signer = take_weak!(self.signer);
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Ok(signer.requests()
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.into_iter()
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.map(Into::into)
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.collect()
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)
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}
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// TODO [ToDr] TransactionModification is redundant for some calls
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// might be better to replace it in future
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fn confirm_request(&self, id: U256, modification: TransactionModification, pass: String) -> Result<Value, Error> {
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try!(self.active());
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let id = id.into();
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let accounts = take_weak!(self.accounts);
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let signer = take_weak!(self.signer);
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let client = take_weak!(self.client);
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let miner = take_weak!(self.miner);
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signer.peek(&id).map(|confirmation| {
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let result = match confirmation.payload {
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ConfirmationPayload::Transaction(mut request) => {
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// apply modification
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if let Some(gas_price) = modification.gas_price {
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request.gas_price = gas_price.into();
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}
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sign_and_dispatch(&*client, &*miner, &*accounts, request.into(), Some(pass)).map(to_value)
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},
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ConfirmationPayload::Sign(address, hash) => {
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sign(&*accounts, address, Some(pass), hash)
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},
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ConfirmationPayload::Decrypt(address, msg) => {
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decrypt(&*accounts, address, Some(pass), msg)
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},
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};
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if let Ok(ref response) = result {
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signer.request_confirmed(id, Ok(response.clone()));
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}
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result
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}).unwrap_or_else(|| Err(errors::invalid_params("Unknown RequestID", id)))
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}
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fn reject_request(&self, id: U256) -> Result<bool, Error> {
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try!(self.active());
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let signer = take_weak!(self.signer);
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let res = signer.request_rejected(id.into());
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Ok(res.is_some())
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}
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fn generate_token(&self) -> Result<String, Error> {
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try!(self.active());
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let signer = take_weak!(self.signer);
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signer.generate_token()
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.map_err(|e| errors::token(e))
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}
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}
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