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Diffstat (limited to 'src/core_write.cpp')
| -rw-r--r-- | src/core_write.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/core_write.cpp b/src/core_write.cpp new file mode 100644 index 0000000000..ea01ddc10d --- /dev/null +++ b/src/core_write.cpp @@ -0,0 +1,205 @@ +// Copyright (c) 2009-2015 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 "core_io.h" + +#include "base58.h" +#include "primitives/transaction.h" +#include "script/script.h" +#include "script/standard.h" +#include "serialize.h" +#include "streams.h" +#include <univalue.h> +#include "util.h" +#include "utilmoneystr.h" +#include "utilstrencodings.h" + +#include <boost/assign/list_of.hpp> +#include <boost/foreach.hpp> + +using namespace std; + +string FormatScript(const CScript& script) +{ + string ret; + CScript::const_iterator it = script.begin(); + opcodetype op; + while (it != script.end()) { + CScript::const_iterator it2 = it; + vector<unsigned char> vch; + if (script.GetOp2(it, op, &vch)) { + if (op == OP_0) { + ret += "0 "; + continue; + } else if ((op >= OP_1 && op <= OP_16) || op == OP_1NEGATE) { + ret += strprintf("%i ", op - OP_1NEGATE - 1); + continue; + } else if (op >= OP_NOP && op <= OP_NOP10) { + string str(GetOpName(op)); + if (str.substr(0, 3) == string("OP_")) { + ret += str.substr(3, string::npos) + " "; + continue; + } + } + if (vch.size() > 0) { + ret += strprintf("0x%x 0x%x ", HexStr(it2, it - vch.size()), HexStr(it - vch.size(), it)); + } else { + ret += strprintf("0x%x ", HexStr(it2, it)); + } + continue; + } + ret += strprintf("0x%x ", HexStr(it2, script.end())); + break; + } + return ret.substr(0, ret.size() - 1); +} + +const map<unsigned char, string> mapSigHashTypes = + boost::assign::map_list_of + (static_cast<unsigned char>(SIGHASH_ALL), string("ALL")) + (static_cast<unsigned char>(SIGHASH_ALL|SIGHASH_ANYONECANPAY), string("ALL|ANYONECANPAY")) + (static_cast<unsigned char>(SIGHASH_NONE), string("NONE")) + (static_cast<unsigned char>(SIGHASH_NONE|SIGHASH_ANYONECANPAY), string("NONE|ANYONECANPAY")) + (static_cast<unsigned char>(SIGHASH_SINGLE), string("SINGLE")) + (static_cast<unsigned char>(SIGHASH_SINGLE|SIGHASH_ANYONECANPAY), string("SINGLE|ANYONECANPAY")) + ; + +/** + * Create the assembly string representation of a CScript object. + * @param[in] script CScript object to convert into the asm string representation. + * @param[in] fAttemptSighashDecode Whether to attempt to decode sighash types on data within the script that matches the format + * of a signature. Only pass true for scripts you believe could contain signatures. For example, + * pass false, or omit the this argument (defaults to false), for scriptPubKeys. + */ +string ScriptToAsmStr(const CScript& script, const bool fAttemptSighashDecode) +{ + string str; + opcodetype opcode; + vector<unsigned char> vch; + CScript::const_iterator pc = script.begin(); + while (pc < script.end()) { + if (!str.empty()) { + str += " "; + } + if (!script.GetOp(pc, opcode, vch)) { + str += "[error]"; + return str; + } + if (0 <= opcode && opcode <= OP_PUSHDATA4) { + if (vch.size() <= static_cast<vector<unsigned char>::size_type>(4)) { + str += strprintf("%d", CScriptNum(vch, false).getint()); + } else { + // the IsUnspendable check makes sure not to try to decode OP_RETURN data that may match the format of a signature + if (fAttemptSighashDecode && !script.IsUnspendable()) { + string strSigHashDecode; + // goal: only attempt to decode a defined sighash type from data that looks like a signature within a scriptSig. + // this won't decode correctly formatted public keys in Pubkey or Multisig scripts due to + // the restrictions on the pubkey formats (see IsCompressedOrUncompressedPubKey) being incongruous with the + // checks in CheckSignatureEncoding. + if (CheckSignatureEncoding(vch, SCRIPT_VERIFY_STRICTENC, NULL)) { + const unsigned char chSigHashType = vch.back(); + if (mapSigHashTypes.count(chSigHashType)) { + strSigHashDecode = "[" + mapSigHashTypes.find(chSigHashType)->second + "]"; + vch.pop_back(); // remove the sighash type byte. it will be replaced by the decode. + } + } + str += HexStr(vch) + strSigHashDecode; + } else { + str += HexStr(vch); + } + } + } else { + str += GetOpName(opcode); + } + } + return str; +} + +string EncodeHexTx(const CTransaction& tx) +{ + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << tx; + return HexStr(ssTx.begin(), ssTx.end()); +} + +void ScriptPubKeyToUniv(const CScript& scriptPubKey, + UniValue& out, bool fIncludeHex) +{ + txnouttype type; + vector<CTxDestination> addresses; + int nRequired; + + out.pushKV("asm", ScriptToAsmStr(scriptPubKey)); + if (fIncludeHex) + out.pushKV("hex", HexStr(scriptPubKey.begin(), scriptPubKey.end())); + + if (!ExtractDestinations(scriptPubKey, type, addresses, nRequired)) { + out.pushKV("type", GetTxnOutputType(type)); + return; + } + + out.pushKV("reqSigs", nRequired); + out.pushKV("type", GetTxnOutputType(type)); + + UniValue a(UniValue::VARR); + BOOST_FOREACH(const CTxDestination& addr, addresses) + a.push_back(CBitcoinAddress(addr).ToString()); + out.pushKV("addresses", a); +} + +void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry) +{ + entry.pushKV("txid", tx.GetHash().GetHex()); + entry.pushKV("hash", tx.GetWitnessHash().GetHex()); + entry.pushKV("version", tx.nVersion); + entry.pushKV("locktime", (int64_t)tx.nLockTime); + + UniValue vin(UniValue::VARR); + for (unsigned int i = 0; i < tx.vin.size(); i++) { + const CTxIn& txin = tx.vin[i]; + UniValue in(UniValue::VOBJ); + if (tx.IsCoinBase()) + in.pushKV("coinbase", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())); + else { + in.pushKV("txid", txin.prevout.hash.GetHex()); + in.pushKV("vout", (int64_t)txin.prevout.n); + UniValue o(UniValue::VOBJ); + o.pushKV("asm", ScriptToAsmStr(txin.scriptSig, true)); + o.pushKV("hex", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())); + in.pushKV("scriptSig", o); + if (!tx.wit.IsNull() && i < tx.wit.vtxinwit.size() && !tx.wit.vtxinwit[i].IsNull()) { + UniValue txinwitness(UniValue::VARR); + for (const auto& item : tx.wit.vtxinwit[i].scriptWitness.stack) { + txinwitness.push_back(HexStr(item.begin(), item.end())); + } + in.pushKV("txinwitness", txinwitness); + } + } + in.pushKV("sequence", (int64_t)txin.nSequence); + vin.push_back(in); + } + entry.pushKV("vin", vin); + + UniValue vout(UniValue::VARR); + for (unsigned int i = 0; i < tx.vout.size(); i++) { + const CTxOut& txout = tx.vout[i]; + + UniValue out(UniValue::VOBJ); + + UniValue outValue(UniValue::VNUM, FormatMoney(txout.nValue)); + out.pushKV("value", outValue); + out.pushKV("n", (int64_t)i); + + UniValue o(UniValue::VOBJ); + ScriptPubKeyToUniv(txout.scriptPubKey, o, true); + out.pushKV("scriptPubKey", o); + vout.push_back(out); + } + entry.pushKV("vout", vout); + + if (!hashBlock.IsNull()) + entry.pushKV("blockhash", hashBlock.GetHex()); + + entry.pushKV("hex", EncodeHexTx(tx)); // the hex-encoded transaction. used the name "hex" to be consistent with the verbose output of "getrawtransaction". +} |