diff options
Diffstat (limited to 'src/rpc/rawtransaction.cpp')
| -rw-r--r-- | src/rpc/rawtransaction.cpp | 170 |
1 files changed, 116 insertions, 54 deletions
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp index b878624df8..934576a391 100644 --- a/src/rpc/rawtransaction.cpp +++ b/src/rpc/rawtransaction.cpp @@ -41,7 +41,7 @@ void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry) // Blockchain contextual information (confirmations and blocktime) is not // available to code in bitcoin-common, so we query them here and push the // data into the returned UniValue. - TxToUniv(tx, uint256(), entry); + TxToUniv(tx, uint256(), entry, true, RPCSerializationFlags()); if (!hashBlock.IsNull()) { entry.push_back(Pair("blockhash", hashBlock.GetHex())); @@ -137,7 +137,7 @@ UniValue getrawtransaction(const JSONRPCRequest& request) // Accept either a bool (true) or a num (>=1) to indicate verbose output. bool fVerbose = false; - if (request.params.size() > 1) { + if (!request.params[1].isNull()) { if (request.params[1].isNum()) { if (request.params[1].get_int() != 0) { fVerbose = true; @@ -160,13 +160,10 @@ UniValue getrawtransaction(const JSONRPCRequest& request) : "No such mempool transaction. Use -txindex to enable blockchain transaction queries") + ". Use gettransaction for wallet transactions."); - std::string strHex = EncodeHexTx(*tx, RPCSerializationFlags()); - if (!fVerbose) - return strHex; + return EncodeHexTx(*tx, RPCSerializationFlags()); UniValue result(UniValue::VOBJ); - result.push_back(Pair("hex", strHex)); TxToJSON(*tx, hashBlock, result); return result; } @@ -208,10 +205,10 @@ UniValue gettxoutproof(const JSONRPCRequest& request) LOCK(cs_main); - CBlockIndex* pblockindex = NULL; + CBlockIndex* pblockindex = nullptr; uint256 hashBlock; - if (request.params.size() > 1) + if (!request.params[1].isNull()) { hashBlock = uint256S(request.params[1].get_str()); if (!mapBlockIndex.count(hashBlock)) @@ -228,7 +225,7 @@ UniValue gettxoutproof(const JSONRPCRequest& request) } } - if (pblockindex == NULL) + if (pblockindex == nullptr) { CTransactionRef tx; if (!GetTransaction(oneTxid, tx, Params().GetConsensus(), hashBlock, false) || hashBlock.IsNull()) @@ -339,14 +336,14 @@ UniValue createrawtransaction(const JSONRPCRequest& request) CMutableTransaction rawTx; - if (request.params.size() > 2 && !request.params[2].isNull()) { + if (!request.params[2].isNull()) { int64_t nLockTime = request.params[2].get_int64(); if (nLockTime < 0 || nLockTime > std::numeric_limits<uint32_t>::max()) throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, locktime out of range"); rawTx.nLockTime = nLockTime; } - bool rbfOptIn = request.params.size() > 3 ? request.params[3].isTrue() : false; + bool rbfOptIn = request.params[3].isTrue(); for (unsigned int idx = 0; idx < inputs.size(); idx++) { const UniValue& input = inputs[idx]; @@ -412,7 +409,7 @@ UniValue createrawtransaction(const JSONRPCRequest& request) } } - if (request.params.size() > 3 && rbfOptIn != SignalsOptInRBF(rawTx)) { + if (!request.params[3].isNull() && rbfOptIn != SignalsOptInRBF(rawTx)) { throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter combination: Sequence number(s) contradict replaceable option"); } @@ -483,7 +480,7 @@ UniValue decoderawtransaction(const JSONRPCRequest& request) throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed"); UniValue result(UniValue::VOBJ); - TxToUniv(CTransaction(std::move(mtx)), uint256(), result); + TxToUniv(CTransaction(std::move(mtx)), uint256(), result, false); return result; } @@ -554,6 +551,93 @@ static void TxInErrorToJSON(const CTxIn& txin, UniValue& vErrorsRet, const std:: vErrorsRet.push_back(entry); } +UniValue combinerawtransaction(const JSONRPCRequest& request) +{ + + if (request.fHelp || request.params.size() != 1) + throw std::runtime_error( + "combinerawtransaction [\"hexstring\",...]\n" + "\nCombine multiple partially signed transactions into one transaction.\n" + "The combined transaction may be another partially signed transaction or a \n" + "fully signed transaction." + + "\nArguments:\n" + "1. \"txs\" (string) A json array of hex strings of partially signed transactions\n" + " [\n" + " \"hexstring\" (string) A transaction hash\n" + " ,...\n" + " ]\n" + + "\nResult:\n" + "\"hex\" (string) The hex-encoded raw transaction with signature(s)\n" + + "\nExamples:\n" + + HelpExampleCli("combinerawtransaction", "[\"myhex1\", \"myhex2\", \"myhex3\"]") + ); + + + UniValue txs = request.params[0].get_array(); + std::vector<CMutableTransaction> txVariants(txs.size()); + + for (unsigned int idx = 0; idx < txs.size(); idx++) { + if (!DecodeHexTx(txVariants[idx], txs[idx].get_str(), true)) { + throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed for tx %d", idx)); + } + } + + if (txVariants.empty()) { + throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Missing transactions"); + } + + // mergedTx will end up with all the signatures; it + // starts as a clone of the rawtx: + CMutableTransaction mergedTx(txVariants[0]); + + // Fetch previous transactions (inputs): + CCoinsView viewDummy; + CCoinsViewCache view(&viewDummy); + { + LOCK(cs_main); + LOCK(mempool.cs); + CCoinsViewCache &viewChain = *pcoinsTip; + CCoinsViewMemPool viewMempool(&viewChain, mempool); + view.SetBackend(viewMempool); // temporarily switch cache backend to db+mempool view + + for (const CTxIn& txin : mergedTx.vin) { + view.AccessCoin(txin.prevout); // Load entries from viewChain into view; can fail. + } + + view.SetBackend(viewDummy); // switch back to avoid locking mempool for too long + } + + // Use CTransaction for the constant parts of the + // transaction to avoid rehashing. + const CTransaction txConst(mergedTx); + // Sign what we can: + for (unsigned int i = 0; i < mergedTx.vin.size(); i++) { + CTxIn& txin = mergedTx.vin[i]; + const Coin& coin = view.AccessCoin(txin.prevout); + if (coin.IsSpent()) { + throw JSONRPCError(RPC_VERIFY_ERROR, "Input not found or already spent"); + } + const CScript& prevPubKey = coin.out.scriptPubKey; + const CAmount& amount = coin.out.nValue; + + SignatureData sigdata; + + // ... and merge in other signatures: + for (const CMutableTransaction& txv : txVariants) { + if (txv.vin.size() > i) { + sigdata = CombineSignatures(prevPubKey, TransactionSignatureChecker(&txConst, i, amount), sigdata, DataFromTransaction(txv, i)); + } + } + + UpdateTransaction(mergedTx, i, sigdata); + } + + return EncodeHexTx(mergedTx); +} + UniValue signrawtransaction(const JSONRPCRequest& request) { #ifdef ENABLE_WALLET @@ -620,32 +704,15 @@ UniValue signrawtransaction(const JSONRPCRequest& request) ); #ifdef ENABLE_WALLET - LOCK2(cs_main, pwallet ? &pwallet->cs_wallet : NULL); + LOCK2(cs_main, pwallet ? &pwallet->cs_wallet : nullptr); #else LOCK(cs_main); #endif RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR, UniValue::VARR, UniValue::VSTR}, true); - std::vector<unsigned char> txData(ParseHexV(request.params[0], "argument 1")); - CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION); - std::vector<CMutableTransaction> txVariants; - while (!ssData.empty()) { - try { - CMutableTransaction tx; - ssData >> tx; - txVariants.push_back(tx); - } - catch (const std::exception&) { - throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed"); - } - } - - if (txVariants.empty()) - throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Missing transaction"); - - // mergedTx will end up with all the signatures; it - // starts as a clone of the rawtx: - CMutableTransaction mergedTx(txVariants[0]); + CMutableTransaction mtx; + if (!DecodeHexTx(mtx, request.params[0].get_str(), true)) + throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed"); // Fetch previous transactions (inputs): CCoinsView viewDummy; @@ -656,7 +723,7 @@ UniValue signrawtransaction(const JSONRPCRequest& request) CCoinsViewMemPool viewMempool(&viewChain, mempool); view.SetBackend(viewMempool); // temporarily switch cache backend to db+mempool view - for (const CTxIn& txin : mergedTx.vin) { + for (const CTxIn& txin : mtx.vin) { view.AccessCoin(txin.prevout); // Load entries from viewChain into view; can fail. } @@ -665,7 +732,7 @@ UniValue signrawtransaction(const JSONRPCRequest& request) bool fGivenKeys = false; CBasicKeyStore tempKeystore; - if (request.params.size() > 2 && !request.params[2].isNull()) { + if (!request.params[2].isNull()) { fGivenKeys = true; UniValue keys = request.params[2].get_array(); for (unsigned int idx = 0; idx < keys.size(); idx++) { @@ -687,7 +754,7 @@ UniValue signrawtransaction(const JSONRPCRequest& request) #endif // Add previous txouts given in the RPC call: - if (request.params.size() > 1 && !request.params[1].isNull()) { + if (!request.params[1].isNull()) { UniValue prevTxs = request.params[1].get_array(); for (unsigned int idx = 0; idx < prevTxs.size(); idx++) { const UniValue& p = prevTxs[idx]; @@ -758,7 +825,7 @@ UniValue signrawtransaction(const JSONRPCRequest& request) #endif int nHashType = SIGHASH_ALL; - if (request.params.size() > 3 && !request.params[3].isNull()) { + if (!request.params[3].isNull()) { static std::map<std::string, int> mapSigHashValues = { {std::string("ALL"), int(SIGHASH_ALL)}, {std::string("ALL|ANYONECANPAY"), int(SIGHASH_ALL|SIGHASH_ANYONECANPAY)}, @@ -781,10 +848,10 @@ UniValue signrawtransaction(const JSONRPCRequest& request) // Use CTransaction for the constant parts of the // transaction to avoid rehashing. - const CTransaction txConst(mergedTx); + const CTransaction txConst(mtx); // Sign what we can: - for (unsigned int i = 0; i < mergedTx.vin.size(); i++) { - CTxIn& txin = mergedTx.vin[i]; + for (unsigned int i = 0; i < mtx.vin.size(); i++) { + CTxIn& txin = mtx.vin[i]; const Coin& coin = view.AccessCoin(txin.prevout); if (coin.IsSpent()) { TxInErrorToJSON(txin, vErrors, "Input not found or already spent"); @@ -795,17 +862,11 @@ UniValue signrawtransaction(const JSONRPCRequest& request) SignatureData sigdata; // Only sign SIGHASH_SINGLE if there's a corresponding output: - if (!fHashSingle || (i < mergedTx.vout.size())) - ProduceSignature(MutableTransactionSignatureCreator(&keystore, &mergedTx, i, amount, nHashType), prevPubKey, sigdata); + if (!fHashSingle || (i < mtx.vout.size())) + ProduceSignature(MutableTransactionSignatureCreator(&keystore, &mtx, i, amount, nHashType), prevPubKey, sigdata); + sigdata = CombineSignatures(prevPubKey, TransactionSignatureChecker(&txConst, i, amount), sigdata, DataFromTransaction(mtx, i)); - // ... and merge in other signatures: - for (const CMutableTransaction& txv : txVariants) { - if (txv.vin.size() > i) { - sigdata = CombineSignatures(prevPubKey, TransactionSignatureChecker(&txConst, i, amount), sigdata, DataFromTransaction(txv, i)); - } - } - - UpdateTransaction(mergedTx, i, sigdata); + UpdateTransaction(mtx, i, sigdata); ScriptError serror = SCRIPT_ERR_OK; if (!VerifyScript(txin.scriptSig, prevPubKey, &txin.scriptWitness, STANDARD_SCRIPT_VERIFY_FLAGS, TransactionSignatureChecker(&txConst, i, amount), &serror)) { @@ -815,7 +876,7 @@ UniValue signrawtransaction(const JSONRPCRequest& request) bool fComplete = vErrors.empty(); UniValue result(UniValue::VOBJ); - result.push_back(Pair("hex", EncodeHexTx(mergedTx))); + result.push_back(Pair("hex", EncodeHexTx(mtx))); result.push_back(Pair("complete", fComplete)); if (!vErrors.empty()) { result.push_back(Pair("errors", vErrors)); @@ -858,7 +919,7 @@ UniValue sendrawtransaction(const JSONRPCRequest& request) const uint256& hashTx = tx->GetHash(); CAmount nMaxRawTxFee = maxTxFee; - if (request.params.size() > 1 && request.params[1].get_bool()) + if (!request.params[1].isNull() && request.params[1].get_bool()) nMaxRawTxFee = 0; CCoinsViewCache &view = *pcoinsTip; @@ -873,7 +934,7 @@ UniValue sendrawtransaction(const JSONRPCRequest& request) CValidationState state; bool fMissingInputs; bool fLimitFree = true; - if (!AcceptToMemoryPool(mempool, state, std::move(tx), fLimitFree, &fMissingInputs, NULL, false, nMaxRawTxFee)) { + if (!AcceptToMemoryPool(mempool, state, std::move(tx), fLimitFree, &fMissingInputs, nullptr, false, nMaxRawTxFee)) { if (state.IsInvalid()) { throw JSONRPCError(RPC_TRANSACTION_REJECTED, strprintf("%i: %s", state.GetRejectCode(), state.GetRejectReason())); } else { @@ -905,6 +966,7 @@ static const CRPCCommand commands[] = { "rawtransactions", "decoderawtransaction", &decoderawtransaction, true, {"hexstring"} }, { "rawtransactions", "decodescript", &decodescript, true, {"hexstring"} }, { "rawtransactions", "sendrawtransaction", &sendrawtransaction, false, {"hexstring","allowhighfees"} }, + { "rawtransactions", "combinerawtransaction", &combinerawtransaction, true, {"txs"} }, { "rawtransactions", "signrawtransaction", &signrawtransaction, false, {"hexstring","prevtxs","privkeys","sighashtype"} }, /* uses wallet if enabled */ { "blockchain", "gettxoutproof", &gettxoutproof, true, {"txids", "blockhash"} }, |