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Merge #14890: rpc: Avoid creating non-standard raw transactions
fa4c8679ed94f215ce895938f7c3c169a2ce101e rpc: Avoid creating non-standard raw transactions (MarcoFalke) Pull request description: Multiple OP_RETURN outputs in a transaction are not standard and unlikely to be relayed, so avoid creating them. Apart from that, the logic was broken in that it duplicated the same hex-data for each data output: Closes #14868. Tree-SHA512: b08d08062b5622e8a7b497e490ccaf53b06e844c863fda3bf3f932a98684a809e8341aeb98232059a795afb32d8770a6c5591a66f8e6ee372b672af245607887
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@ -421,7 +421,7 @@ static UniValue createrawtransaction(const JSONRPCRequest& request)
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},
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},
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},
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{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "a json array with outputs (key-value pairs).\n"
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{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "a json array with outputs (key-value pairs), where none of the keys are duplicated.\n"
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"That is, each address can only appear once and there can only be one 'data' object.\n"
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"For compatibility reasons, a dictionary, which holds the key-value pairs directly, is also\n"
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" accepted as second parameter.",
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@ -1283,7 +1283,8 @@ UniValue createpsbt(const JSONRPCRequest& request)
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},
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},
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},
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{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "a json array with outputs (key-value pairs).\n"
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{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "a json array with outputs (key-value pairs), where none of the keys are duplicated.\n"
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"That is, each address can only appear once and there can only be one 'data' object.\n"
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"For compatibility reasons, a dictionary, which holds the key-value pairs directly, is also\n"
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" accepted as second parameter.",
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{
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@ -66,7 +66,6 @@ CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniVal
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rawTx.vin.push_back(in);
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}
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std::set<CTxDestination> destinations;
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if (!outputs_is_obj) {
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// Translate array of key-value pairs into dict
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UniValue outputs_dict = UniValue(UniValue::VOBJ);
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@ -82,8 +81,17 @@ CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniVal
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}
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outputs = std::move(outputs_dict);
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}
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// Duplicate checking
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std::set<CTxDestination> destinations;
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bool has_data{false};
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for (const std::string& name_ : outputs.getKeys()) {
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if (name_ == "data") {
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if (has_data) {
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throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, duplicate key: data");
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}
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has_data = true;
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std::vector<unsigned char> data = ParseHexV(outputs[name_].getValStr(), "Data");
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CTxOut out(0, CScript() << OP_RETURN << data);
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@ -124,9 +124,6 @@ BOOST_AUTO_TEST_CASE(rpc_createraw_op_return)
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{
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BOOST_CHECK_NO_THROW(CallRPC("createrawtransaction [{\"txid\":\"a3b807410df0b60fcb9736768df5823938b2f838694939ba45f3c0a1bff150ed\",\"vout\":0}] {\"data\":\"68656c6c6f776f726c64\"}"));
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// Allow more than one data transaction output
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BOOST_CHECK_NO_THROW(CallRPC("createrawtransaction [{\"txid\":\"a3b807410df0b60fcb9736768df5823938b2f838694939ba45f3c0a1bff150ed\",\"vout\":0}] {\"data\":\"68656c6c6f776f726c64\",\"data\":\"68656c6c6f776f726c64\"}"));
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// Key not "data" (bad address)
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BOOST_CHECK_THROW(CallRPC("createrawtransaction [{\"txid\":\"a3b807410df0b60fcb9736768df5823938b2f838694939ba45f3c0a1bff150ed\",\"vout\":0}] {\"somedata\":\"68656c6c6f776f726c64\"}"), std::runtime_error);
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@ -4041,7 +4041,8 @@ UniValue walletcreatefundedpsbt(const JSONRPCRequest& request)
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},
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},
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},
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{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "a json array with outputs (key-value pairs).\n"
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{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "a json array with outputs (key-value pairs), where none of the keys are duplicated.\n"
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"That is, each address can only appear once and there can only be one 'data' object.\n"
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"For compatibility reasons, a dictionary, which holds the key-value pairs directly, is also\n"
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" accepted as second parameter.",
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{
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@ -109,6 +109,8 @@ class RawTransactionsTest(BitcoinTestFramework):
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assert_raises_rpc_error(-3, "Amount out of range", self.nodes[0].createrawtransaction, [], {address: -1})
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assert_raises_rpc_error(-8, "Invalid parameter, duplicated address: %s" % address, self.nodes[0].createrawtransaction, [], multidict([(address, 1), (address, 1)]))
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assert_raises_rpc_error(-8, "Invalid parameter, duplicated address: %s" % address, self.nodes[0].createrawtransaction, [], [{address: 1}, {address: 1}])
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assert_raises_rpc_error(-8, "Invalid parameter, duplicate key: data", self.nodes[0].createrawtransaction, [], [{"data": 'aa'}, {"data": "bb"}])
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assert_raises_rpc_error(-8, "Invalid parameter, duplicate key: data", self.nodes[0].createrawtransaction, [], multidict([("data", 'aa'), ("data", "bb")]))
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assert_raises_rpc_error(-8, "Invalid parameter, key-value pair must contain exactly one key", self.nodes[0].createrawtransaction, [], [{'a': 1, 'b': 2}])
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assert_raises_rpc_error(-8, "Invalid parameter, key-value pair not an object as expected", self.nodes[0].createrawtransaction, [], [['key-value pair1'], ['2']])
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@ -133,19 +135,12 @@ class RawTransactionsTest(BitcoinTestFramework):
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tx.serialize().hex(),
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self.nodes[2].createrawtransaction(inputs=[{'txid': txid, 'vout': 9}], outputs=[{address: 99}, {address2: 99}]),
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)
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# Two data outputs
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tx.deserialize(BytesIO(hex_str_to_bytes(self.nodes[2].createrawtransaction(inputs=[{'txid': txid, 'vout': 9}], outputs=multidict([('data', '99'), ('data', '99')])))))
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assert_equal(len(tx.vout), 2)
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assert_equal(
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tx.serialize().hex(),
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self.nodes[2].createrawtransaction(inputs=[{'txid': txid, 'vout': 9}], outputs=[{'data': '99'}, {'data': '99'}]),
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)
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# Multiple mixed outputs
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tx.deserialize(BytesIO(hex_str_to_bytes(self.nodes[2].createrawtransaction(inputs=[{'txid': txid, 'vout': 9}], outputs=multidict([(address, 99), ('data', '99'), ('data', '99')])))))
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tx.deserialize(BytesIO(hex_str_to_bytes(self.nodes[2].createrawtransaction(inputs=[{'txid': txid, 'vout': 9}], outputs=multidict([(address, 99), (address2, 99), ('data', '99')])))))
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assert_equal(len(tx.vout), 3)
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assert_equal(
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tx.serialize().hex(),
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self.nodes[2].createrawtransaction(inputs=[{'txid': txid, 'vout': 9}], outputs=[{address: 99}, {'data': '99'}, {'data': '99'}]),
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self.nodes[2].createrawtransaction(inputs=[{'txid': txid, 'vout': 9}], outputs=[{address: 99}, {address2: 99}, {'data': '99'}]),
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)
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self.log.info('sendrawtransaction with missing input')
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