Browse Source
Implement listunspent / getrawtransaction / createrawtransaction / signrawtransaction, to support creation and signing-on-multiple-device multisignature transactions.miguelfreitas
Gavin Andresen
13 years ago
12 changed files with 750 additions and 56 deletions
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// Copyright (c) 2010 Satoshi Nakamoto
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// Copyright (c) 2009-2012 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <boost/assign/list_of.hpp> |
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#include "base58.h" |
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#include "bitcoinrpc.h" |
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#include "db.h" |
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#include "init.h" |
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#include "main.h" |
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#include "wallet.h" |
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using namespace std; |
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using namespace boost; |
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using namespace boost::assign; |
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using namespace json_spirit; |
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// These are all in bitcoinrpc.cpp:
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extern Object JSONRPCError(int code, const string& message); |
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extern int64 AmountFromValue(const Value& value); |
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extern Value ValueFromAmount(int64 amount); |
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extern std::string HelpRequiringPassphrase(); |
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extern void EnsureWalletIsUnlocked(); |
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void |
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ScriptPubKeyToJSON(const CScript& scriptPubKey, Object& out) |
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{ |
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txnouttype type; |
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vector<CTxDestination> addresses; |
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int nRequired; |
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out.push_back(Pair("asm", scriptPubKey.ToString())); |
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out.push_back(Pair("hex", HexStr(scriptPubKey.begin(), scriptPubKey.end()))); |
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if (!ExtractDestinations(scriptPubKey, type, addresses, nRequired)) |
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{ |
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out.push_back(Pair("type", GetTxnOutputType(TX_NONSTANDARD))); |
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return; |
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} |
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out.push_back(Pair("reqSigs", nRequired)); |
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out.push_back(Pair("type", GetTxnOutputType(type))); |
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Array a; |
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BOOST_FOREACH(const CTxDestination& addr, addresses) |
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a.push_back(CBitcoinAddress(addr).ToString()); |
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out.push_back(Pair("addresses", a)); |
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} |
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void |
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TxToJSON(const CTransaction& tx, const uint256 hashBlock, Object& entry) |
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{ |
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entry.push_back(Pair("txid", tx.GetHash().GetHex())); |
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entry.push_back(Pair("version", tx.nVersion)); |
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entry.push_back(Pair("locktime", (boost::int64_t)tx.nLockTime)); |
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Array vin; |
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BOOST_FOREACH(const CTxIn& txin, tx.vin) |
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{ |
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Object in; |
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if (tx.IsCoinBase()) |
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in.push_back(Pair("coinbase", HexStr(txin.scriptSig.begin(), txin.scriptSig.end()))); |
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else |
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{ |
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in.push_back(Pair("txid", txin.prevout.hash.GetHex())); |
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in.push_back(Pair("vout", (boost::int64_t)txin.prevout.n)); |
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Object o; |
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o.push_back(Pair("asm", txin.scriptSig.ToString())); |
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o.push_back(Pair("hex", HexStr(txin.scriptSig.begin(), txin.scriptSig.end()))); |
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in.push_back(Pair("scriptSig", o)); |
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} |
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in.push_back(Pair("sequence", (boost::int64_t)txin.nSequence)); |
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vin.push_back(in); |
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} |
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entry.push_back(Pair("vin", vin)); |
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Array vout; |
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for (int i = 0; i < tx.vout.size(); i++) |
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{ |
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const CTxOut& txout = tx.vout[i]; |
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Object out; |
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out.push_back(Pair("value", ValueFromAmount(txout.nValue))); |
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out.push_back(Pair("n", i)); |
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Object o; |
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ScriptPubKeyToJSON(txout.scriptPubKey, o); |
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out.push_back(Pair("scriptPubKey", o)); |
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vout.push_back(out); |
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} |
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entry.push_back(Pair("vout", vout)); |
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if (hashBlock != 0) |
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{ |
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entry.push_back(Pair("blockhash", hashBlock.GetHex())); |
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map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock); |
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if (mi != mapBlockIndex.end() && (*mi).second) |
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{ |
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CBlockIndex* pindex = (*mi).second; |
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if (pindex->IsInMainChain()) |
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{ |
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entry.push_back(Pair("confirmations", 1 + nBestHeight - pindex->nHeight)); |
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entry.push_back(Pair("time", (boost::int64_t)pindex->nTime)); |
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} |
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else |
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entry.push_back(Pair("confirmations", 0)); |
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} |
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} |
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} |
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Value getrawtransaction(const Array& params, bool fHelp) |
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{ |
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if (fHelp || params.size() < 1 || params.size() > 2) |
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throw runtime_error( |
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"getrawtransaction <txid> [verbose=0]\n" |
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"If verbose=0, returns a string that is\n" |
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"serialized, hex-encoded data for <txid>.\n" |
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"If verbose is non-zero, returns an Object\n" |
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"with information about <txid>."); |
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uint256 hash; |
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hash.SetHex(params[0].get_str()); |
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bool fVerbose = false; |
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if (params.size() > 1) |
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fVerbose = (params[1].get_int() != 0); |
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CTransaction tx; |
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uint256 hashBlock = 0; |
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if (!GetTransaction(hash, tx, hashBlock)) |
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throw JSONRPCError(-5, "No information available about transaction"); |
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CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); |
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ssTx << tx; |
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string strHex = HexStr(ssTx.begin(), ssTx.end()); |
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if (!fVerbose) |
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return strHex; |
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Object result; |
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result.push_back(Pair("hex", strHex)); |
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TxToJSON(tx, hashBlock, result); |
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return result; |
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} |
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Value listunspent(const Array& params, bool fHelp) |
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{ |
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if (fHelp || params.size() > 2) |
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throw runtime_error( |
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"listunspent [minconf=1] [maxconf=999999]\n" |
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"Returns array of unspent transaction outputs\n" |
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"with between minconf and maxconf (inclusive) confirmations.\n" |
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"Results are an array of Objects, each of which has:\n" |
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"{txid, vout, scriptPubKey, amount, confirmations}"); |
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RPCTypeCheck(params, list_of(int_type)(int_type)); |
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int nMinDepth = 1; |
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if (params.size() > 0) |
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nMinDepth = params[0].get_int(); |
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int nMaxDepth = 999999; |
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if (params.size() > 1) |
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nMaxDepth = params[1].get_int(); |
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Array results; |
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vector<COutput> vecOutputs; |
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pwalletMain->AvailableCoins(vecOutputs, false); |
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BOOST_FOREACH(const COutput& out, vecOutputs) |
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{ |
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if (out.nDepth < nMinDepth || out.nDepth > nMaxDepth) |
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continue; |
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int64 nValue = out.tx->vout[out.i].nValue; |
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const CScript& pk = out.tx->vout[out.i].scriptPubKey; |
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Object entry; |
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entry.push_back(Pair("txid", out.tx->GetHash().GetHex())); |
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entry.push_back(Pair("vout", out.i)); |
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entry.push_back(Pair("scriptPubKey", HexStr(pk.begin(), pk.end()))); |
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entry.push_back(Pair("amount",ValueFromAmount(nValue))); |
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entry.push_back(Pair("confirmations",out.nDepth)); |
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results.push_back(entry); |
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} |
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return results; |
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} |
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Value createrawtransaction(const Array& params, bool fHelp) |
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{ |
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if (fHelp || params.size() != 2) |
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throw runtime_error( |
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"createrawtransaction [{\"txid\":txid,\"vout\":n},...] {address:amount,...}\n" |
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"Create a transaction spending given inputs\n" |
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"(array of objects containing transaction id and output number),\n" |
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"sending to given address(es).\n" |
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"Returns hex-encoded raw transaction.\n" |
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"Note that the transaction's inputs are not signed, and\n" |
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"it is not stored in the wallet or transmitted to the network."); |
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RPCTypeCheck(params, list_of(array_type)(obj_type)); |
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Array inputs = params[0].get_array(); |
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Object sendTo = params[1].get_obj(); |
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CTransaction rawTx; |
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BOOST_FOREACH(Value& input, inputs) |
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{ |
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const Object& o = input.get_obj(); |
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const Value& txid_v = find_value(o, "txid"); |
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if (txid_v.type() != str_type) |
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throw JSONRPCError(-8, "Invalid parameter, missing txid key"); |
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string txid = txid_v.get_str(); |
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if (!IsHex(txid)) |
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throw JSONRPCError(-8, "Invalid parameter, expected hex txid"); |
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const Value& vout_v = find_value(o, "vout"); |
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if (vout_v.type() != int_type) |
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throw JSONRPCError(-8, "Invalid parameter, missing vout key"); |
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int nOutput = vout_v.get_int(); |
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if (nOutput < 0) |
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throw JSONRPCError(-8, "Invalid parameter, vout must be positive"); |
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CTxIn in(COutPoint(uint256(txid), nOutput)); |
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rawTx.vin.push_back(in); |
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} |
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set<CBitcoinAddress> setAddress; |
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BOOST_FOREACH(const Pair& s, sendTo) |
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{ |
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CBitcoinAddress address(s.name_); |
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if (!address.IsValid()) |
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throw JSONRPCError(-5, string("Invalid Bitcoin address:")+s.name_); |
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if (setAddress.count(address)) |
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throw JSONRPCError(-8, string("Invalid parameter, duplicated address: ")+s.name_); |
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setAddress.insert(address); |
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CScript scriptPubKey; |
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scriptPubKey.SetDestination(address.Get()); |
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int64 nAmount = AmountFromValue(s.value_); |
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CTxOut out(nAmount, scriptPubKey); |
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rawTx.vout.push_back(out); |
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} |
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CDataStream ss(SER_NETWORK, PROTOCOL_VERSION); |
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ss << rawTx; |
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return HexStr(ss.begin(), ss.end()); |
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} |
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Value decoderawtransaction(const Array& params, bool fHelp) |
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{ |
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if (fHelp || params.size() != 1) |
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throw runtime_error( |
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"decoderawtransaction <hex string>\n" |
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"Return a JSON object representing the serialized, hex-encoded transaction."); |
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RPCTypeCheck(params, list_of(str_type)); |
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vector<unsigned char> txData(ParseHex(params[0].get_str())); |
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CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION); |
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CTransaction tx; |
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try { |
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ssData >> tx; |
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} |
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catch (std::exception &e) { |
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throw JSONRPCError(-22, "TX decode failed"); |
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} |
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Object result; |
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TxToJSON(tx, 0, result); |
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return result; |
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} |
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Value signrawtransaction(const Array& params, bool fHelp) |
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{ |
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if (fHelp || params.size() < 1 || params.size() > 3) |
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throw runtime_error( |
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"signrawtransaction <hex string> [{\"txid\":txid,\"vout\":n,\"scriptPubKey\":hex},...] [<privatekey1>,...]\n" |
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"Sign inputs for raw transaction (serialized, hex-encoded).\n" |
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"Second optional argument is an array of previous transaction outputs that\n" |
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"this transaction depends on but may not yet be in the blockchain.\n" |
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"Third optional argument is an array of base58-encoded private\n" |
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"keys that, if given, will be the only keys used to sign the transaction.\n" |
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"Returns json object with keys:\n" |
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" hex : raw transaction with signature(s) (hex-encoded string)\n" |
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" complete : 1 if transaction has a complete set of signature (0 if not)" |
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+ HelpRequiringPassphrase()); |
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if (params.size() < 3) |
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EnsureWalletIsUnlocked(); |
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RPCTypeCheck(params, list_of(str_type)(array_type)(array_type)); |
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vector<unsigned char> txData(ParseHex(params[0].get_str())); |
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CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION); |
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vector<CTransaction> txVariants; |
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while (!ssData.empty()) |
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{ |
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try { |
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CTransaction tx; |
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ssData >> tx; |
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txVariants.push_back(tx); |
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} |
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catch (std::exception &e) { |
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throw JSONRPCError(-22, "TX decode failed"); |
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} |
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} |
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if (txVariants.empty()) |
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throw JSONRPCError(-22, "Missing transaction"); |
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// mergedTx will end up with all the signatures; it
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// starts as a clone of the rawtx:
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CTransaction mergedTx(txVariants[0]); |
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bool fComplete = true; |
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// Fetch previous transactions (inputs):
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map<COutPoint, CScript> mapPrevOut; |
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{ |
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MapPrevTx mapPrevTx; |
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CTxDB txdb("r"); |
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map<uint256, CTxIndex> unused; |
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bool fInvalid; |
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mergedTx.FetchInputs(txdb, unused, false, false, mapPrevTx, fInvalid); |
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// Copy results into mapPrevOut:
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BOOST_FOREACH(const CTxIn& txin, mergedTx.vin) |
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{ |
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const uint256& prevHash = txin.prevout.hash; |
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if (mapPrevTx.count(prevHash)) |
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mapPrevOut[txin.prevout] = mapPrevTx[prevHash].second.vout[txin.prevout.n].scriptPubKey; |
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} |
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} |
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// Add previous txouts given in the RPC call:
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if (params.size() > 1) |
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{ |
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Array prevTxs = params[1].get_array(); |
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BOOST_FOREACH(Value& p, prevTxs) |
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{ |
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if (p.type() != obj_type) |
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throw JSONRPCError(-22, "expected object with {\"txid'\",\"vout\",\"scriptPubKey\"}"); |
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Object prevOut = p.get_obj(); |
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RPCTypeCheck(prevOut, map_list_of("txid", str_type)("vout", int_type)("scriptPubKey", str_type)); |
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string txidHex = find_value(prevOut, "txid").get_str(); |
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if (!IsHex(txidHex)) |
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throw JSONRPCError(-22, "txid must be hexadecimal"); |
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uint256 txid; |
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txid.SetHex(txidHex); |
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int nOut = find_value(prevOut, "vout").get_int(); |
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if (nOut < 0) |
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throw JSONRPCError(-22, "vout must be positive"); |
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string pkHex = find_value(prevOut, "scriptPubKey").get_str(); |
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if (!IsHex(pkHex)) |
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throw JSONRPCError(-22, "scriptPubKey must be hexadecimal"); |
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vector<unsigned char> pkData(ParseHex(pkHex)); |
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CScript scriptPubKey(pkData.begin(), pkData.end()); |
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COutPoint outpoint(txid, nOut); |
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if (mapPrevOut.count(outpoint)) |
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{ |
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// Complain if scriptPubKey doesn't match
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if (mapPrevOut[outpoint] != scriptPubKey) |
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{ |
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string err("Previous output scriptPubKey mismatch:\n"); |
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err = err + mapPrevOut[outpoint].ToString() + "\nvs:\n"+ |
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scriptPubKey.ToString(); |
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throw JSONRPCError(-22, err); |
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} |
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} |
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else |
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mapPrevOut[outpoint] = scriptPubKey; |
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} |
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} |
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bool fGivenKeys = false; |
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CBasicKeyStore tempKeystore; |
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if (params.size() > 2) |
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{ |
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fGivenKeys = true; |
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Array keys = params[2].get_array(); |
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BOOST_FOREACH(Value k, keys) |
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{ |
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CBitcoinSecret vchSecret; |
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bool fGood = vchSecret.SetString(k.get_str()); |
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if (!fGood) |
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throw JSONRPCError(-5,"Invalid private key"); |
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CKey key; |
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bool fCompressed; |
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CSecret secret = vchSecret.GetSecret(fCompressed); |
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key.SetSecret(secret, fCompressed); |
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tempKeystore.AddKey(key); |
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} |
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} |
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const CKeyStore& keystore = (fGivenKeys ? tempKeystore : *pwalletMain); |
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// Sign what we can:
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for (int i = 0; i < mergedTx.vin.size(); i++) |
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{ |
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CTxIn& txin = mergedTx.vin[i]; |
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if (mapPrevOut.count(txin.prevout) == 0) |
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{ |
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fComplete = false; |
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continue; |
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} |
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const CScript& prevPubKey = mapPrevOut[txin.prevout]; |
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txin.scriptSig.clear(); |
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SignSignature(keystore, prevPubKey, mergedTx, i); |
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// ... and merge in other signatures:
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BOOST_FOREACH(const CTransaction& txv, txVariants) |
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{ |
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txin.scriptSig = CombineSignatures(prevPubKey, mergedTx, i, txin.scriptSig, txv.vin[i].scriptSig); |
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} |
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if (!VerifyScript(txin.scriptSig, prevPubKey, mergedTx, i, true, 0)) |
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fComplete = false; |
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} |
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Object result; |
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CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); |
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ssTx << mergedTx; |
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result.push_back(Pair("hex", HexStr(ssTx.begin(), ssTx.end()))); |
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result.push_back(Pair("complete", fComplete)); |
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return result; |
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} |
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Value sendrawtransaction(const Array& params, bool fHelp) |
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{ |
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if (fHelp || params.size() < 1 || params.size() > 1) |
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throw runtime_error( |
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"sendrawtransaction <hex string>\n" |
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"Submits raw transaction (serialized, hex-encoded) to local node and network."); |
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RPCTypeCheck(params, list_of(str_type)); |
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// parse hex string from parameter
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vector<unsigned char> txData(ParseHex(params[0].get_str())); |
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CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION); |
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CTransaction tx; |
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// deserialize binary data stream
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try { |
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ssData >> tx; |
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} |
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catch (std::exception &e) { |
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throw JSONRPCError(-22, "TX decode failed"); |
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} |
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// push to local node
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CTxDB txdb("r"); |
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if (!tx.AcceptToMemoryPool(txdb)) |
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throw JSONRPCError(-22, "TX rejected"); |
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SyncWithWallets(tx, NULL, true); |
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// relay to network
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CInv inv(MSG_TX, tx.GetHash()); |
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RelayInventory(inv); |
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return tx.GetHash().GetHex(); |
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} |
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