140 lines
5.2 KiB
Rust
140 lines
5.2 KiB
Rust
// Copyright 2015-2017 Parity Technologies (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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//! Unsafe Signing RPC implementation.
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use std::sync::Arc;
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use ethcore::account_provider::AccountProvider;
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use jsonrpc_core::{BoxFuture, Result};
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use jsonrpc_core::futures::{future, Future};
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use v1::helpers::{errors, DefaultAccount};
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use v1::helpers::dispatch::{self, Dispatcher};
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use v1::helpers::accounts::unwrap_provider;
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use v1::metadata::Metadata;
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use v1::traits::{EthSigning, ParitySigning};
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use v1::types::{
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U256 as RpcU256,
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H160 as RpcH160, H256 as RpcH256, H520 as RpcH520, Bytes as RpcBytes,
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Either as RpcEither,
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RichRawTransaction as RpcRichRawTransaction,
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TransactionRequest as RpcTransactionRequest,
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ConfirmationPayload as RpcConfirmationPayload,
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ConfirmationResponse as RpcConfirmationResponse,
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};
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/// Implementation of functions that require signing when no trusted signer is used.
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pub struct SigningUnsafeClient<D> {
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accounts: Option<Arc<AccountProvider>>,
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dispatcher: D,
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}
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impl<D: Dispatcher + 'static> SigningUnsafeClient<D> {
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/// Creates new SigningUnsafeClient.
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pub fn new(accounts: &Option<Arc<AccountProvider>>, dispatcher: D) -> Self {
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SigningUnsafeClient {
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accounts: accounts.clone(),
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dispatcher: dispatcher,
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}
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}
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fn account_provider(&self) -> Result<Arc<AccountProvider>> {
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unwrap_provider(&self.accounts)
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}
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fn handle(&self, payload: RpcConfirmationPayload, account: DefaultAccount) -> BoxFuture<RpcConfirmationResponse> {
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let accounts = try_bf!(self.account_provider());
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let default = match account {
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DefaultAccount::Provided(acc) => acc,
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DefaultAccount::ForDapp(dapp) => accounts.dapp_default_address(dapp).ok().unwrap_or_default(),
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};
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let dis = self.dispatcher.clone();
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Box::new(dispatch::from_rpc(payload, default, &dis)
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.and_then(move |payload| {
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dispatch::execute(dis, accounts, payload, dispatch::SignWith::Nothing)
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})
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.map(|v| v.into_value()))
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}
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}
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impl<D: Dispatcher + 'static> EthSigning for SigningUnsafeClient<D>
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{
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type Metadata = Metadata;
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fn sign(&self, _: Metadata, address: RpcH160, data: RpcBytes) -> BoxFuture<RpcH520> {
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Box::new(self.handle(RpcConfirmationPayload::EthSignMessage((address.clone(), data).into()), address.into())
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.then(|res| match res {
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Ok(RpcConfirmationResponse::Signature(signature)) => Ok(signature),
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Err(e) => Err(e),
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e => Err(errors::internal("Unexpected result", e)),
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}))
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}
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fn send_transaction(&self, meta: Metadata, request: RpcTransactionRequest) -> BoxFuture<RpcH256> {
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Box::new(self.handle(RpcConfirmationPayload::SendTransaction(request), meta.dapp_id().into())
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.then(|res| match res {
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Ok(RpcConfirmationResponse::SendTransaction(hash)) => Ok(hash),
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Err(e) => Err(e),
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e => Err(errors::internal("Unexpected result", e)),
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}))
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}
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fn sign_transaction(&self, meta: Metadata, request: RpcTransactionRequest) -> BoxFuture<RpcRichRawTransaction> {
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Box::new(self.handle(RpcConfirmationPayload::SignTransaction(request), meta.dapp_id().into())
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.then(|res| match res {
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Ok(RpcConfirmationResponse::SignTransaction(tx)) => Ok(tx),
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Err(e) => Err(e),
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e => Err(errors::internal("Unexpected result", e)),
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}))
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}
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}
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impl<D: Dispatcher + 'static> ParitySigning for SigningUnsafeClient<D> {
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type Metadata = Metadata;
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fn compose_transaction(&self, meta: Metadata, transaction: RpcTransactionRequest) -> BoxFuture<RpcTransactionRequest> {
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let accounts = try_bf!(self.account_provider());
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let default_account = accounts.dapp_default_address(meta.dapp_id().into()).ok().unwrap_or_default();
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Box::new(self.dispatcher.fill_optional_fields(transaction.into(), default_account, true).map(Into::into))
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}
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fn decrypt_message(&self, _: Metadata, address: RpcH160, data: RpcBytes) -> BoxFuture<RpcBytes> {
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Box::new(self.handle(RpcConfirmationPayload::Decrypt((address.clone(), data).into()), address.into())
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.then(|res| match res {
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Ok(RpcConfirmationResponse::Decrypt(data)) => Ok(data),
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Err(e) => Err(e),
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e => Err(errors::internal("Unexpected result", e)),
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}))
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}
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fn post_sign(&self, _: Metadata, _: RpcH160, _: RpcBytes) -> BoxFuture<RpcEither<RpcU256, RpcConfirmationResponse>> {
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// We don't support this in non-signer mode.
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Box::new(future::err(errors::signer_disabled()))
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}
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fn post_transaction(&self, _: Metadata, _: RpcTransactionRequest) -> BoxFuture<RpcEither<RpcU256, RpcConfirmationResponse>> {
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// We don't support this in non-signer mode.
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Box::new(future::err((errors::signer_disabled())))
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}
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fn check_request(&self, _: RpcU256) -> Result<Option<RpcConfirmationResponse>> {
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// We don't support this in non-signer mode.
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Err(errors::signer_disabled())
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}
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}
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