diff --git a/libraries/wallet/include/graphene/wallet/wallet.hpp b/libraries/wallet/include/graphene/wallet/wallet.hpp index 02582de4..76bada67 100644 --- a/libraries/wallet/include/graphene/wallet/wallet.hpp +++ b/libraries/wallet/include/graphene/wallet/wallet.hpp @@ -765,9 +765,10 @@ class wallet_api * who sent it. * * @param opt_from - if not empty and the sender is a unknown public key, then the unknown public key will be given the label opt_from + * @param owner - optional, when owner is emtpy (owner == authority()) this receipt must be on the blockchain. Transfers may save their confirmation prior to broadcast. * @param confirmation_receipt - a base58 encoded stealth confirmation */ - blind_receipt receive_blind_transfer( string confirmation_receipt, string opt_from, string opt_memo ); + blind_receipt receive_blind_transfer( string confirmation_receipt, string opt_from, string opt_memo, optional owner ); /** * Transfers a public balance from @from to one or more blinded balances using a diff --git a/libraries/wallet/wallet.cpp b/libraries/wallet/wallet.cpp index ed93724a..163a7899 100644 --- a/libraries/wallet/wallet.cpp +++ b/libraries/wallet/wallet.cpp @@ -3676,7 +3676,7 @@ blind_confirmation wallet_api::transfer_from_blind( string from_blind_account_ke auto conf = blind_transfer_help( from_blind_account_key_or_label, from_blind_account_key_or_label, - blind_in, symbol, false, true ); + blind_in, symbol, false, true/*to_temp*/ ); FC_ASSERT( conf.outputs.size() > 0 ); auto to_account = my->get_account( to_account_id_or_name ); @@ -3690,6 +3690,24 @@ blind_confirmation wallet_api::transfer_from_blind( string from_blind_account_ke conf.trx.operations.push_back(from_blind); ilog( "about to validate" ); conf.trx.validate(); + + if( broadcast && conf.outputs.size() == 2 ) { + + // Save the change + blind_confirmation::output conf_output; + blind_confirmation::output change_output = conf.outputs[0]; + + // The wallet must have a private key for confirmation.to, this is used to decrypt the memo + public_key_type from_key = get_public_key(from_blind_account_key_or_label); + conf_output.confirmation.to = from_key; + conf_output.confirmation.one_time_key = change_output.confirmation.one_time_key; + conf_output.confirmation.encrypted_memo = change_output.confirmation.encrypted_memo; + conf_output.confirmation_receipt = conf_output.confirmation; + //try { + receive_blind_transfer( conf_output.confirmation_receipt, from_blind_account_key_or_label, "@"+to_account.name, change_output.auth ); + //} catch ( ... ){} + } + ilog( "about to broadcast" ); conf.trx = sign_transaction( conf.trx, broadcast ); @@ -3864,7 +3882,7 @@ blind_confirmation wallet_api::blind_transfer_help( string from_key_or_label, { for( const auto& out : confirm.outputs ) { - try { receive_blind_transfer( out.confirmation_receipt, from_key_or_label, "" ); } catch ( ... ){} + try { receive_blind_transfer( out.confirmation_receipt, from_key_or_label, "", optional() ); } catch ( ... ){} } } @@ -3953,14 +3971,14 @@ blind_confirmation wallet_api::transfer_to_blind( string from_account_id_or_name { for( const auto& out : confirm.outputs ) { - try { receive_blind_transfer( out.confirmation_receipt, "@"+from_account.name, "from @"+from_account.name ); } catch ( ... ){} + try { receive_blind_transfer( out.confirmation_receipt, "@"+from_account.name, "from @"+from_account.name, optional() ); } catch ( ... ){} } } return confirm; } FC_CAPTURE_AND_RETHROW( (from_account_id_or_name)(asset_symbol)(to_amounts) ) } -blind_receipt wallet_api::receive_blind_transfer( string confirmation_receipt, string opt_from, string opt_memo ) +blind_receipt wallet_api::receive_blind_transfer( string confirmation_receipt, string opt_from, string opt_memo, optional owner ) { FC_ASSERT( !is_locked() ); stealth_confirmation conf(confirmation_receipt); @@ -4009,8 +4027,17 @@ blind_receipt wallet_api::receive_blind_transfer( string confirmation_receipt, s auto commtiment_test = fc::ecc::blind( memo.blinding_factor, memo.amount.amount.value ); FC_ASSERT( fc::ecc::verify_sum( {commtiment_test}, {memo.commitment}, 0 ) ); - auto bbal = my->_remote_db->get_blinded_balances( {memo.commitment} ); - FC_ASSERT( bbal.size(), "commitment not found in blockchain", ("memo",memo) ); + vector bbal; + if( owner.valid() ) + { + // When owner is provided, do not require the commitment to be on the blockchain yet... This allows the receipt to be saved before it is broadcasted. + blinded_balance_object b; + b.owner = *owner; + bbal.push_back(b); + } else { + bbal = my->_remote_db->get_blinded_balances( {memo.commitment} ); + FC_ASSERT( bbal.size(), "commitment not found in blockchain", ("memo",memo) ); + } blind_balance bal; bal.amount = memo.amount;