98 lines
3.9 KiB
Rust
98 lines
3.9 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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use util::{Address, H256, U256, Uint, Bytes};
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use util::bytes::ToPretty;
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use ethkey::Signature;
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use ethcore::miner::MinerService;
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use ethcore::client::MiningBlockChainClient;
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use ethcore::transaction::{Action, SignedTransaction, Transaction};
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use ethcore::account_provider::AccountProvider;
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use jsonrpc_core::{Error, Value, to_value};
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use v1::helpers::TransactionRequest;
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use v1::types::{H256 as RpcH256, H520 as RpcH520, Bytes as RpcBytes};
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use v1::helpers::errors;
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pub const DEFAULT_MAC: [u8; 2] = [0, 0];
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pub fn dispatch_transaction<C, M>(client: &C, miner: &M, signed_transaction: SignedTransaction) -> Result<RpcH256, Error>
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where C: MiningBlockChainClient, M: MinerService {
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let hash = RpcH256::from(signed_transaction.hash());
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miner.import_own_transaction(client, signed_transaction)
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.map_err(errors::from_transaction_error)
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.map(|_| hash)
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}
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fn signature(accounts: &AccountProvider, address: Address, password: Option<String>, hash: H256) -> Result<Signature, Error> {
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accounts.sign(address, password.clone(), hash).map_err(|e| match password {
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Some(_) => errors::from_password_error(e),
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None => errors::from_signing_error(e),
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})
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}
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pub fn sign(accounts: &AccountProvider, address: Address, password: Option<String>, hash: H256) -> Result<Value, Error> {
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signature(accounts, address, password, hash)
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.map(RpcH520::from)
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.map(to_value)
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}
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pub fn decrypt(accounts: &AccountProvider, address: Address, password: Option<String>, msg: Bytes) -> Result<Value, Error> {
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accounts.decrypt(address, password.clone(), &DEFAULT_MAC, &msg)
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.map_err(|e| match password {
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Some(_) => errors::from_password_error(e),
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None => errors::from_signing_error(e),
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})
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.map(RpcBytes::from)
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.map(to_value)
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}
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pub fn sign_and_dispatch<C, M>(client: &C, miner: &M, accounts: &AccountProvider, request: TransactionRequest, password: Option<String>) -> Result<RpcH256, Error>
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where C: MiningBlockChainClient, M: MinerService {
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let network_id = client.signing_network_id();
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let address = request.from;
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let signed_transaction = {
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let t = prepare_transaction(client, miner, request);
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let hash = t.hash(network_id);
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let signature = try!(signature(accounts, address, password, hash));
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t.with_signature(signature, network_id)
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};
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trace!(target: "miner", "send_transaction: dispatching tx: {} for network ID {:?}", ::rlp::encode(&signed_transaction).to_vec().pretty(), network_id);
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dispatch_transaction(&*client, &*miner, signed_transaction)
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}
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fn prepare_transaction<C, M>(client: &C, miner: &M, request: TransactionRequest) -> Transaction where C: MiningBlockChainClient, M: MinerService {
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Transaction {
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nonce: request.nonce
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.or_else(|| miner
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.last_nonce(&request.from)
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.map(|nonce| nonce + U256::one()))
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.unwrap_or_else(|| client.latest_nonce(&request.from)),
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action: request.to.map_or(Action::Create, Action::Call),
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gas: request.gas.unwrap_or_else(|| miner.sensible_gas_limit()),
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gas_price: request.gas_price.unwrap_or_else(|| default_gas_price(client, miner)),
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value: request.value.unwrap_or_else(U256::zero),
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data: request.data.map_or_else(Vec::new, |b| b.to_vec()),
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}
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}
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pub fn default_gas_price<C, M>(client: &C, miner: &M) -> U256 where C: MiningBlockChainClient, M: MinerService {
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client.gas_price_median(100).unwrap_or_else(|| miner.sensible_gas_price())
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}
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