CLI: Wallet-RPC command to sign builder transactions with specified keys

libraries/wallet/include/graphene/wallet/wallet.hpp

@@ -376,6 +376,19 @@ class wallet_api
        */
       signed_transaction sign_builder_transaction(transaction_handle_type transaction_handle, bool broadcast = true);
 
+      /**
+       * @ingroup Transaction Builder API
+       *
+       * Sign the transaction in a transaction builder and optionally broadcast to the network.
+       * @param transaction_handle handle of the transaction builder
+       * @param signing_keys Keys that must be used when signing the transaction
+       * @param broadcast whether to broadcast the signed transaction to the network
+       * @return a signed transaction
+       */
+      signed_transaction sign_builder_transaction2(transaction_handle_type transaction_handle,
+                                                  const vector<public_key_type>& signing_keys = vector<public_key_type>(),
+                                                  bool broadcast = true);
+
       /** Broadcast signed transaction
        * @param tx signed transaction
        * @returns the transaction ID along with the signed transaction.
@@ -1784,6 +1797,7 @@ FC_API( graphene::wallet::wallet_api,
         (set_fees_on_builder_transaction)
         (preview_builder_transaction)
         (sign_builder_transaction)
+        (sign_builder_transaction2)
         (broadcast_transaction)
         (propose_builder_transaction)
         (propose_builder_transaction2)

libraries/wallet/wallet.cpp

@@ -526,6 +526,13 @@ signed_transaction wallet_api::sign_builder_transaction(transaction_handle_type
    return my->sign_builder_transaction(transaction_handle, broadcast);
 }
 
+signed_transaction wallet_api::sign_builder_transaction2(transaction_handle_type transaction_handle,
+                                                        const vector<public_key_type>& explicit_keys,
+                                                        bool broadcast)
+{
+   return my->sign_builder_transaction2(transaction_handle, explicit_keys, broadcast);
+}
+
 pair<transaction_id_type,signed_transaction> wallet_api::broadcast_transaction(signed_transaction tx)
 {
     return my->broadcast_transaction(tx);

libraries/wallet/wallet_api_impl.hpp

@@ -219,6 +219,9 @@ class wallet_api_impl
    asset set_fees_on_builder_transaction(transaction_handle_type handle, string fee_asset = GRAPHENE_SYMBOL);
    transaction preview_builder_transaction(transaction_handle_type handle);
    signed_transaction sign_builder_transaction(transaction_handle_type transaction_handle, bool broadcast = true);
+   signed_transaction sign_builder_transaction2(transaction_handle_type transaction_handle,
+                                               const vector<public_key_type>& signing_keys = vector<public_key_type>(),
+                                               bool broadcast = true);
 
    pair<transaction_id_type,signed_transaction> broadcast_transaction(signed_transaction tx);
 

libraries/wallet/wallet_builder.cpp

@@ -88,6 +88,15 @@ namespace graphene { namespace wallet { namespace detail {
             sign_transaction(_builder_transactions[transaction_handle], broadcast);
    }
 
+   signed_transaction wallet_api_impl::sign_builder_transaction2(transaction_handle_type
+         transaction_handle, const vector<public_key_type>& signing_keys, bool broadcast)
+   {
+      FC_ASSERT(_builder_transactions.count(transaction_handle));
+
+      return _builder_transactions[transaction_handle] =
+            sign_transaction2(_builder_transactions[transaction_handle], signing_keys, broadcast);
+   }
+
    signed_transaction wallet_api_impl::propose_builder_transaction( transaction_handle_type handle,
          time_point_sec expiration, uint32_t review_period_seconds, bool broadcast)
    {