openethereum/rpc/src/v1/helpers/fake_sign.rs

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// 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/>.
use std::sync::Arc;
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use ethcore::client::MiningBlockChainClient;
use ethcore::miner::MinerService;
use ethcore::transaction::{Transaction, SignedTransaction, Action};
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use bigint::prelude::U256;
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use jsonrpc_core::Error;
use v1::helpers::CallRequest;
use v1::helpers::dispatch::default_gas_price;
pub fn sign_call<C: MiningBlockChainClient, M: MinerService> (
client: &Arc<C>,
miner: &Arc<M>,
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request: CallRequest,
gas_cap: bool,
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) -> Result<SignedTransaction, Error> {
let max_gas = 50_000_000.into();
let gas = match request.gas {
Some(gas) if gas_cap && gas > max_gas => {
warn!("Gas limit capped to {} (from {})", max_gas, gas);
max_gas
}
Some(gas) => gas,
None if gas_cap => max_gas,
None => U256::from(2) << 50,
};
let from = request.from.unwrap_or(0.into());
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Ok(Transaction {
nonce: request.nonce.unwrap_or_else(|| client.latest_nonce(&from)),
action: request.to.map_or(Action::Create, Action::Call),
gas,
gas_price: request.gas_price.unwrap_or_else(|| default_gas_price(&**client, &**miner)),
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value: request.value.unwrap_or(0.into()),
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data: request.data.unwrap_or_default(),
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}.fake_sign(from))
}