openethereum/rpc/src/v1/impls/mod.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/>.
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//! Ethereum rpc interface implementation.
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macro_rules! take_weak {
($weak: expr) => {
match $weak.upgrade() {
Some(arc) => arc,
None => return Err(Error::internal_error())
}
}
}
macro_rules! rpc_unimplemented {
() => (Err(Error::internal_error()))
}
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mod web3;
mod eth;
mod eth_filter;
mod eth_signing;
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mod net;
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mod personal;
mod personal_signer;
mod ethcore;
mod ethcore_set;
mod traces;
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mod rpc;
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pub use self::web3::Web3Client;
pub use self::eth::EthClient;
pub use self::eth_filter::EthFilterClient;
pub use self::eth_signing::{EthSigningUnsafeClient, EthSigningQueueClient};
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pub use self::net::NetClient;
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pub use self::personal::PersonalClient;
pub use self::personal_signer::SignerClient;
pub use self::ethcore::EthcoreClient;
pub use self::ethcore_set::EthcoreSetClient;
pub use self::traces::TracesClient;
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pub use self::rpc::RpcClient;
use v1::helpers::TransactionRequest;
use v1::types::H256 as NH256;
use ethcore::error::Error as EthcoreError;
use ethcore::miner::MinerService;
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use ethcore::client::MiningBlockChainClient;
use ethcore::transaction::{Action, SignedTransaction, Transaction};
use ethcore::account_provider::{AccountProvider, Error as AccountError};
use util::numbers::*;
use util::rlp::encode;
use util::bytes::ToPretty;
use jsonrpc_core::{Error, ErrorCode, Value, to_value};
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mod error_codes {
// NOTE [ToDr] Codes from [-32099, -32000]
pub const UNSUPPORTED_REQUEST_CODE: i64 = -32000;
pub const NO_WORK_CODE: i64 = -32001;
pub const NO_AUTHOR_CODE: i64 = -32002;
pub const UNKNOWN_ERROR: i64 = -32009;
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pub const TRANSACTION_ERROR: i64 = -32010;
pub const TRANSACTION_REJECTED: i64 = -32011;
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pub const ACCOUNT_LOCKED: i64 = -32020;
pub const PASSWORD_INVALID: i64 = -32021;
pub const SIGNER_DISABLED: i64 = -32030;
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}
fn dispatch_transaction<C, M>(client: &C, miner: &M, signed_transaction: SignedTransaction) -> Result<Value, Error>
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where C: MiningBlockChainClient, M: MinerService {
let hash = NH256::from(signed_transaction.hash());
let import = miner.import_own_transaction(client, signed_transaction);
import
.map_err(transaction_error)
.and_then(|_| to_value(&hash))
}
fn prepare_transaction<C, M>(client: &C, miner: &M, request: TransactionRequest) -> Transaction where C: MiningBlockChainClient, M: MinerService {
Transaction {
nonce: request.nonce
.or_else(|| miner
.last_nonce(&request.from)
.map(|nonce| nonce + U256::one()))
.unwrap_or_else(|| client.latest_nonce(&request.from)),
action: request.to.map_or(Action::Create, Action::Call),
gas: request.gas.unwrap_or_else(|| miner.sensible_gas_limit()),
gas_price: request.gas_price.unwrap_or_else(|| default_gas_price(client, miner)),
value: request.value.unwrap_or_else(U256::zero),
data: request.data.map_or_else(Vec::new, |b| b.to_vec()),
}
}
fn unlock_sign_and_dispatch<C, M>(client: &C, miner: &M, request: TransactionRequest, account_provider: &AccountProvider, address: Address, password: String) -> Result<Value, Error>
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where C: MiningBlockChainClient, M: MinerService {
let signed_transaction = {
let t = prepare_transaction(client, miner, request);
let hash = t.hash();
let signature = try!(account_provider.sign_with_password(address, password, hash).map_err(password_error));
t.with_signature(signature)
};
trace!(target: "miner", "send_transaction: dispatching tx: {}", encode(&signed_transaction).to_vec().pretty());
dispatch_transaction(&*client, &*miner, signed_transaction)
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}
fn sign_and_dispatch<C, M>(client: &C, miner: &M, request: TransactionRequest, account_provider: &AccountProvider, address: Address) -> Result<Value, Error>
where C: MiningBlockChainClient, M: MinerService {
let signed_transaction = {
let t = prepare_transaction(client, miner, request);
let hash = t.hash();
let signature = try!(account_provider.sign(address, hash).map_err(signing_error));
t.with_signature(signature)
};
trace!(target: "miner", "send_transaction: dispatching tx: {}", encode(&signed_transaction).to_vec().pretty());
dispatch_transaction(&*client, &*miner, signed_transaction)
}
fn default_gas_price<C, M>(client: &C, miner: &M) -> U256 where C: MiningBlockChainClient, M: MinerService {
client
.gas_price_statistics(100, 8)
.map(|x| x[4])
.unwrap_or_else(|_| miner.sensible_gas_price())
}
fn signing_error(error: AccountError) -> Error {
Error {
code: ErrorCode::ServerError(error_codes::ACCOUNT_LOCKED),
message: "Your account is locked. Unlock the account via CLI, personal_unlockAccount or use Trusted Signer.".into(),
data: Some(Value::String(format!("{:?}", error))),
}
}
fn password_error(error: AccountError) -> Error {
Error {
code: ErrorCode::ServerError(error_codes::PASSWORD_INVALID),
message: "Account password is invalid or account does not exist.".into(),
data: Some(Value::String(format!("{:?}", error))),
}
}
/// Error returned when transaction is rejected (in Trusted Signer).
pub fn transaction_rejected_error() -> Error {
Error {
code: ErrorCode::ServerError(error_codes::TRANSACTION_REJECTED),
message: "Transaction has been rejected.".into(),
data: None,
}
}
fn transaction_error(error: EthcoreError) -> Error {
use ethcore::error::TransactionError::*;
if let EthcoreError::Transaction(e) = error {
let msg = match e {
AlreadyImported => "Transaction with the same hash was already imported.".into(),
Old => "Transaction nonce is too low. Try incrementing the nonce.".into(),
TooCheapToReplace => {
"Transaction fee is too low. There is another transaction with same nonce in the queue. Try increasing the fee or incrementing the nonce.".into()
},
LimitReached => {
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"There are too many transactions in the queue. Your transaction was dropped due to limit. Try increasing the fee.".into()
},
InsufficientGasPrice { minimal, got } => {
format!("Transaction fee is too low. It does not satisfy your node's minimal fee (minimal: {}, got: {}). Try increasing the fee.", minimal, got)
},
InsufficientBalance { balance, cost } => {
format!("Insufficient funds. Account you try to send transaction from does not have enough funds. Required {} and got: {}.", cost, balance)
},
GasLimitExceeded { limit, got } => {
format!("Transaction cost exceeds current gas limit. Limit: {}, got: {}. Try decreasing supplied gas.", limit, got)
},
InvalidGasLimit(_) => "Supplied gas is beyond limit.".into(),
};
Error {
code: ErrorCode::ServerError(error_codes::TRANSACTION_ERROR),
message: msg,
data: None,
}
} else {
Error {
code: ErrorCode::ServerError(error_codes::UNKNOWN_ERROR),
message: "Unknown error when sending transaction.".into(),
data: Some(Value::String(format!("{:?}", error))),
}
}
}