diff options
Diffstat (limited to 'src/node')
| -rw-r--r-- | src/node/transaction.cpp | 115 | ||||
| -rw-r--r-- | src/node/transaction.h | 43 |
2 files changed, 158 insertions, 0 deletions
diff --git a/src/node/transaction.cpp b/src/node/transaction.cpp new file mode 100644 index 0000000000..c9cdd0d1cd --- /dev/null +++ b/src/node/transaction.cpp @@ -0,0 +1,115 @@ +// Copyright (c) 2010 Satoshi Nakamoto +// Copyright (c) 2009-2018 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <consensus/validation.h> +#include <net.h> +#include <txmempool.h> +#include <validation.h> +#include <validationinterface.h> +#include <node/transaction.h> + +#include <future> + +const char* TransactionErrorString(const TransactionError err) +{ + switch (err) { + case TransactionError::OK: + return "No error"; + case TransactionError::MISSING_INPUTS: + return "Missing inputs"; + case TransactionError::ALREADY_IN_CHAIN: + return "Transaction already in block chain"; + case TransactionError::P2P_DISABLED: + return "Peer-to-peer functionality missing or disabled"; + case TransactionError::MEMPOOL_REJECTED: + return "Transaction rejected by AcceptToMemoryPool"; + case TransactionError::MEMPOOL_ERROR: + return "AcceptToMemoryPool failed"; + case TransactionError::INVALID_PSBT: + return "PSBT is not sane"; + case TransactionError::PSBT_MISMATCH: + return "PSBTs not compatible (different transactions)"; + case TransactionError::SIGHASH_MISMATCH: + return "Specified sighash value does not match existing value"; + + case TransactionError::UNKNOWN_ERROR: + default: break; + } + return "Unknown error"; +} + +bool BroadcastTransaction(const CTransactionRef tx, uint256& hashTx, TransactionError& error, std::string& err_string, const bool allowhighfees) +{ + std::promise<void> promise; + hashTx = tx->GetHash(); + + CAmount nMaxRawTxFee = maxTxFee; + if (allowhighfees) + nMaxRawTxFee = 0; + + { // cs_main scope + LOCK(cs_main); + CCoinsViewCache &view = *pcoinsTip; + bool fHaveChain = false; + for (size_t o = 0; !fHaveChain && o < tx->vout.size(); o++) { + const Coin& existingCoin = view.AccessCoin(COutPoint(hashTx, o)); + fHaveChain = !existingCoin.IsSpent(); + } + bool fHaveMempool = mempool.exists(hashTx); + if (!fHaveMempool && !fHaveChain) { + // push to local node and sync with wallets + CValidationState state; + bool fMissingInputs; + if (!AcceptToMemoryPool(mempool, state, std::move(tx), &fMissingInputs, + nullptr /* plTxnReplaced */, false /* bypass_limits */, nMaxRawTxFee)) { + if (state.IsInvalid()) { + err_string = FormatStateMessage(state); + error = TransactionError::MEMPOOL_REJECTED; + return false; + } else { + if (fMissingInputs) { + error = TransactionError::MISSING_INPUTS; + return false; + } + err_string = FormatStateMessage(state); + error = TransactionError::MEMPOOL_ERROR; + return false; + } + } else { + // If wallet is enabled, ensure that the wallet has been made aware + // of the new transaction prior to returning. This prevents a race + // where a user might call sendrawtransaction with a transaction + // to/from their wallet, immediately call some wallet RPC, and get + // a stale result because callbacks have not yet been processed. + CallFunctionInValidationInterfaceQueue([&promise] { + promise.set_value(); + }); + } + } else if (fHaveChain) { + error = TransactionError::ALREADY_IN_CHAIN; + return false; + } else { + // Make sure we don't block forever if re-sending + // a transaction already in mempool. + promise.set_value(); + } + + } // cs_main + + promise.get_future().wait(); + + if(!g_connman) { + error = TransactionError::P2P_DISABLED; + return false; + } + + CInv inv(MSG_TX, hashTx); + g_connman->ForEachNode([&inv](CNode* pnode) + { + pnode->PushInventory(inv); + }); + + return true; + } diff --git a/src/node/transaction.h b/src/node/transaction.h new file mode 100644 index 0000000000..3b0cbba98b --- /dev/null +++ b/src/node/transaction.h @@ -0,0 +1,43 @@ +// Copyright (c) 2017-2018 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_NODE_TRANSACTION_H +#define BITCOIN_NODE_TRANSACTION_H + +#include <primitives/transaction.h> +#include <uint256.h> + +enum class TransactionError { + OK = 0, + UNKNOWN_ERROR, + + MISSING_INPUTS, + ALREADY_IN_CHAIN, + P2P_DISABLED, + MEMPOOL_REJECTED, + MEMPOOL_ERROR, + INVALID_PSBT, + PSBT_MISMATCH, + SIGHASH_MISMATCH, + + ERROR_COUNT +}; + +#define TRANSACTION_ERR_LAST TransactionError::ERROR_COUNT + +const char* TransactionErrorString(const TransactionError error); + +/** + * Broadcast a transaction + * + * @param[in] tx the transaction to broadcast + * @param[out] &txid the txid of the transaction, if successfully broadcast + * @param[out] &error reference to UniValue to fill with error info on failure + * @param[out] &err_string reference to std::string to fill with error string if available + * @param[in] allowhighfees whether to allow fees exceeding maxTxFee + * return true on success, false on error (and fills in `error`) + */ +bool BroadcastTransaction(CTransactionRef tx, uint256& txid, TransactionError& error, std::string& err_string, bool allowhighfees = false); + +#endif // BITCOIN_NODE_TRANSACTION_H |