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use std::sync::{Arc, Weak};
use ethcore::account_provider::AccountProvider;
use ethcore::miner::MinerService;
use ethcore::client::MiningBlockChainClient;
use futures::{self, BoxFuture, Future};
use jsonrpc_core::Error;
use v1::helpers::{errors, dispatch, DefaultAccount};
use v1::metadata::Metadata;
use v1::traits::{EthSigning, ParitySigning};
use v1::types::{
U256 as RpcU256,
H160 as RpcH160, H256 as RpcH256, H520 as RpcH520, Bytes as RpcBytes,
Either as RpcEither,
RichRawTransaction as RpcRichRawTransaction,
TransactionRequest as RpcTransactionRequest,
ConfirmationPayload as RpcConfirmationPayload,
ConfirmationResponse as RpcConfirmationResponse,
};
pub struct SigningUnsafeClient<C, M> where
C: MiningBlockChainClient,
M: MinerService,
{
accounts: Weak<AccountProvider>,
client: Weak<C>,
miner: Weak<M>,
}
impl<C, M> SigningUnsafeClient<C, M> where
C: MiningBlockChainClient,
M: MinerService,
{
pub fn new(client: &Arc<C>, accounts: &Arc<AccountProvider>, miner: &Arc<M>)
-> Self {
SigningUnsafeClient {
client: Arc::downgrade(client),
miner: Arc::downgrade(miner),
accounts: Arc::downgrade(accounts),
}
}
fn active(&self) -> Result<(), Error> {
take_weak!(self.client).keep_alive();
Ok(())
}
fn handle(&self, payload: RpcConfirmationPayload, account: DefaultAccount) -> Result<RpcConfirmationResponse, Error> {
self.active()?;
let client = take_weak!(self.client);
let miner = take_weak!(self.miner);
let accounts = take_weak!(self.accounts);
let default_account = match account {
DefaultAccount::Provided(acc) => acc,
DefaultAccount::ForDapp(dapp) => accounts.default_address(dapp).ok().unwrap_or_default(),
};
let payload = dispatch::from_rpc(payload, default_account, &*client, &*miner);
dispatch::execute(&*client, &*miner, &*accounts, payload, dispatch::SignWith::Nothing)
.map(|v| v.into_value())
}
}
impl<C: 'static, M: 'static> EthSigning for SigningUnsafeClient<C, M> where
C: MiningBlockChainClient,
M: MinerService,
{
type Metadata = Metadata;
fn sign(&self, address: RpcH160, data: RpcBytes) -> BoxFuture<RpcH520, Error> {
let result = match self.handle(RpcConfirmationPayload::Signature((address.clone(), data).into()), address.into()) {
Ok(RpcConfirmationResponse::Signature(signature)) => Ok(signature),
Err(e) => Err(e),
e => Err(errors::internal("Unexpected result", e)),
};
futures::done(result).boxed()
}
fn send_transaction(&self, meta: Metadata, request: RpcTransactionRequest) -> BoxFuture<RpcH256, Error> {
let result = match self.handle(RpcConfirmationPayload::SendTransaction(request), meta.into()) {
Ok(RpcConfirmationResponse::SendTransaction(hash)) => Ok(hash),
Err(e) => Err(e),
e => Err(errors::internal("Unexpected result", e)),
};
futures::done(result).boxed()
}
fn sign_transaction(&self, meta: Metadata, request: RpcTransactionRequest) -> BoxFuture<RpcRichRawTransaction, Error> {
let result = match self.handle(RpcConfirmationPayload::SignTransaction(request), meta.into()) {
Ok(RpcConfirmationResponse::SignTransaction(tx)) => Ok(tx),
Err(e) => Err(e),
e => Err(errors::internal("Unexpected result", e)),
};
futures::done(result).boxed()
}
}
impl<C: 'static, M: 'static> ParitySigning for SigningUnsafeClient<C, M> where
C: MiningBlockChainClient,
M: MinerService,
{
type Metadata = Metadata;
fn decrypt_message(&self, address: RpcH160, data: RpcBytes) -> BoxFuture<RpcBytes, Error> {
let result = match self.handle(RpcConfirmationPayload::Decrypt((address.clone(), data).into()), address.into()) {
Ok(RpcConfirmationResponse::Decrypt(data)) => Ok(data),
Err(e) => Err(e),
e => Err(errors::internal("Unexpected result", e)),
};
futures::done(result).boxed()
}
fn post_sign(&self, _: RpcH160, _: RpcBytes) -> Result<RpcEither<RpcU256, RpcConfirmationResponse>, Error> {
Err(errors::signer_disabled())
}
fn post_transaction(&self, _: Metadata, _: RpcTransactionRequest) -> BoxFuture<RpcEither<RpcU256, RpcConfirmationResponse>, Error> {
futures::done(Err(errors::signer_disabled())).boxed()
}
fn check_request(&self, _: RpcU256) -> Result<Option<RpcConfirmationResponse>, Error> {
Err(errors::signer_disabled())
}
}