Added 'payment_id' optional argument to 'transfer' wallet RPC method

src/wallet/wallet2.cpp

@@ -19,6 +19,7 @@ using namespace epee;
 #include "profile_tools.h"
 #include "crypto/crypto.h"
 #include "serialization/binary_utils.h"
+#include "cryptonote_protocol/blobdatatype.h"
 
 using namespace cryptonote;
 
@@ -465,6 +466,19 @@ void wallet2::wallet_exists(const std::string& file_path, bool& keys_file_exists
   wallet_file_exists = boost::filesystem::exists(wallet_file, ignore);
 }
 //----------------------------------------------------------------------------------------------------
+bool wallet2::parse_payment_id(const std::string& payment_id_str, crypto::hash& payment_id)
+{
+  cryptonote::blobdata payment_id_data;
+  if(!epee::string_tools::parse_hexstr_to_binbuff(payment_id_str, payment_id_data))
+    return false;
+
+  if(sizeof(crypto::hash) != payment_id_data.size())
+    return false;
+
+  payment_id = *reinterpret_cast<const crypto::hash*>(payment_id_data.data());
+  return true;
+}
+//----------------------------------------------------------------------------------------------------
 bool wallet2::prepare_file_names(const std::string& file_path)
 {
   do_prepare_file_names(file_path, m_keys_file, m_wallet_file);