Adds `personal_signTransaction` RPC method (#6991)

* Adds personal_signTransaction RPC method

* Fixes sign_transaction() to return RichRawTransaction

* Adds test for invalid password

* Fix after rebase

rpc/src/v1/impls/personal.rs

@@ -30,7 +30,7 @@ use v1::helpers::errors;
 use v1::helpers::dispatch::{Dispatcher, SignWith};
 use v1::helpers::accounts::unwrap_provider;
 use v1::traits::Personal;
-use v1::types::{H160 as RpcH160, H256 as RpcH256, U128 as RpcU128, TransactionRequest};
+use v1::types::{H160 as RpcH160, H256 as RpcH256, U128 as RpcU128, TransactionRequest, RichRawTransaction as RpcRichRawTransaction};
 use v1::metadata::Metadata;
 
 /// Account management (personal) rpc implementation.
@@ -55,6 +55,35 @@ impl<D: Dispatcher> PersonalClient<D> {
 	}
 }
 
+impl<D: Dispatcher + 'static> PersonalClient<D> {
+	fn do_sign_transaction(&self, meta: Metadata, request: TransactionRequest, password: String) -> BoxFuture<(PendingTransaction, D)> {
+		let dispatcher = self.dispatcher.clone();
+		let accounts = try_bf!(self.account_provider());
+
+		let default = match request.from.as_ref() {
+			Some(account) => Ok(account.clone().into()),
+			None => accounts
+				.dapp_default_address(meta.dapp_id().into())
+				.map_err(|e| errors::account("Cannot find default account.", e)),
+		};
+
+		let default = match default {
+			Ok(default) => default,
+			Err(e) => return Box::new(future::err(e)),
+		};
+
+		Box::new(dispatcher.fill_optional_fields(request.into(), default, false)
+			.and_then(move |filled| {
+				let condition = filled.condition.clone().map(Into::into);
+				dispatcher.sign(accounts, filled, SignWith::Password(password))
+					.map(|tx| tx.into_value())
+					.map(move |tx| PendingTransaction::new(tx, condition))
+					.map(move |tx| (tx, dispatcher))
+			})
+		)
+	}
+}
+
 impl<D: Dispatcher + 'static> Personal for PersonalClient<D> {
 	type Metadata = Metadata;
 
@@ -104,37 +133,21 @@ impl<D: Dispatcher + 'static> Personal for PersonalClient<D> {
 		}
 	}
 
+	fn sign_transaction(&self, meta: Metadata, request: TransactionRequest, password: String) -> BoxFuture<RpcRichRawTransaction> {
+		Box::new(self.do_sign_transaction(meta, request, password)
+			.map(|(pending_tx, dispatcher)| dispatcher.enrich(pending_tx.transaction)))
+	}
+
 	fn send_transaction(&self, meta: Metadata, request: TransactionRequest, password: String) -> BoxFuture<RpcH256> {
-		let dispatcher = self.dispatcher.clone();
-		let accounts = try_bf!(self.account_provider());
-
-		let default = match request.from.as_ref() {
-			Some(account) => Ok(account.clone().into()),
-			None => accounts
-				.dapp_default_address(meta.dapp_id().into())
-				.map_err(|e| errors::account("Cannot find default account.", e)),
-		};
-
-		let default = match default {
-			Ok(default) => default,
-			Err(e) => return Box::new(future::err(e)),
-		};
-
-		Box::new(dispatcher.fill_optional_fields(request.into(), default, false)
-			.and_then(move |filled| {
-				let condition = filled.condition.clone().map(Into::into);
-				dispatcher.sign(accounts, filled, SignWith::Password(password))
-					.map(|tx| tx.into_value())
-					.map(move |tx| PendingTransaction::new(tx, condition))
-					.map(move |tx| (tx, dispatcher))
-			})
+		Box::new(self.do_sign_transaction(meta, request, password)
 			.and_then(|(pending_tx, dispatcher)| {
 				let chain_id = pending_tx.chain_id();
 				trace!(target: "miner", "send_transaction: dispatching tx: {} for chain ID {:?}",
 					::rlp::encode(&*pending_tx).into_vec().pretty(), chain_id);
 
 				dispatcher.dispatch_transaction(pending_tx).map(Into::into)
-			}))
+			})
+		)
 	}
 
 	fn sign_and_send_transaction(&self, meta: Metadata, request: TransactionRequest, password: String) -> BoxFuture<RpcH256> {

rpc/src/v1/tests/mocked/personal.rs

@@ -96,28 +96,39 @@ fn new_account() {
 	assert_eq!(res, Some(response));
 }
 
-#[test]
-fn sign_and_send_transaction_with_invalid_password() {
+fn invalid_password_test(method: &str)
+{
 	let tester = setup();
 	let address = tester.accounts.new_account("password123").unwrap();
+
 	let request = r#"{
 		"jsonrpc": "2.0",
-		"method": "personal_sendTransaction",
+		"method": ""#.to_owned() + method + r#"",
 		"params": [{
-			"from": ""#.to_owned() + format!("0x{:?}", address).as_ref() + r#"",
+			"from": ""# + format!("0x{:?}", address).as_ref() + r#"",
 			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
 			"gas": "0x76c0",
 			"gasPrice": "0x9184e72a000",
 			"value": "0x9184e72a"
 		}, "password321"],
 		"id": 1
-	}"#;
+	}"#;	
 
 	let response = r#"{"jsonrpc":"2.0","error":{"code":-32021,"message":"Account password is invalid or account does not exist.","data":"SStore(InvalidPassword)"},"id":1}"#;
 
 	assert_eq!(tester.io.handle_request_sync(request.as_ref()), Some(response.into()));
 }
 
+#[test]
+fn sign_transaction_with_invalid_password() {
+	invalid_password_test("personal_signTransaction");
+}
+
+#[test]
+fn sign_and_send_transaction_with_invalid_password() {
+	invalid_password_test("personal_sendTransaction");
+}
+
 #[test]
 fn send_transaction() {
 	sign_and_send_test("personal_sendTransaction");

rpc/src/v1/traits/personal.rs

@@ -17,7 +17,7 @@
 //! Personal rpc interface.
 use jsonrpc_core::{BoxFuture, Result};
 
-use v1::types::{U128, H160, H256, TransactionRequest};
+use v1::types::{U128, H160, H256, TransactionRequest, RichRawTransaction as RpcRichRawTransaction};
 
 build_rpc_trait! {
 	/// Personal rpc interface. Safe (read-only) functions.
@@ -37,6 +37,10 @@ build_rpc_trait! {
 		#[rpc(name = "personal_unlockAccount")]
 		fn unlock_account(&self, H160, String, Option<U128>) -> Result<bool>;
 
+		/// Signs transaction. The account is not unlocked in such case.
+		#[rpc(meta, name = "personal_signTransaction")]
+		fn sign_transaction(&self, Self::Metadata, TransactionRequest, String) -> BoxFuture<RpcRichRawTransaction>;
+
 		/// Sends transaction and signs it in single call. The account is not unlocked in such case.
 		#[rpc(meta, name = "personal_sendTransaction")]
 		fn send_transaction(&self, Self::Metadata, TransactionRequest, String) -> BoxFuture<H256>;