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Copy pathcore_write.cpp
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375 lines (336 loc) · 14.7 KB
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// 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 <core_io.h>
#include <consensus/consensus.h>
#include <consensus/validation.h>
#include <issuance.h>
#include <key_io.h>
#include <script/script.h>
#include <script/sign.h>
#include <script/standard.h>
#include <serialize.h>
#include <streams.h>
#include <univalue.h>
#include <util/system.h>
#include <util/moneystr.h>
#include <util/strencodings.h>
#include <secp256k1_rangeproof.h>
static secp256k1_context* secp256k1_blind_context = NULL;
class RPCRawTransaction_ECC_Init {
public:
RPCRawTransaction_ECC_Init() {
assert(secp256k1_blind_context == NULL);
secp256k1_context *ctx = secp256k1_context_create(SECP256K1_CONTEXT_NONE);
assert(ctx != NULL);
secp256k1_blind_context = ctx;
}
~RPCRawTransaction_ECC_Init() {
secp256k1_context *ctx = secp256k1_blind_context;
secp256k1_blind_context = NULL;
if (ctx) {
secp256k1_context_destroy(ctx);
}
}
};
static RPCRawTransaction_ECC_Init ecc_init_on_load;
UniValue ValueFromAmount(const CAmount& amount)
{
bool sign = amount < 0;
int64_t n_abs = (sign ? -amount : amount);
int64_t quotient = n_abs / COIN;
int64_t remainder = n_abs % COIN;
return UniValue(UniValue::VNUM,
strprintf("%s%d.%08d", sign ? "-" : "", quotient, remainder));
}
std::string FormatScript(const CScript& script)
{
std::string ret;
CScript::const_iterator it = script.begin();
opcodetype op;
while (it != script.end()) {
CScript::const_iterator it2 = it;
std::vector<unsigned char> vch;
if (script.GetOp(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) {
std::string str(GetOpName(op));
if (str.substr(0, 3) == std::string("OP_")) {
ret += str.substr(3, std::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 std::map<unsigned char, std::string> mapSigHashTypes = {
{static_cast<unsigned char>(SIGHASH_ALL), std::string("ALL")},
{static_cast<unsigned char>(SIGHASH_ALL|SIGHASH_ANYONECANPAY), std::string("ALL|ANYONECANPAY")},
{static_cast<unsigned char>(SIGHASH_NONE), std::string("NONE")},
{static_cast<unsigned char>(SIGHASH_NONE|SIGHASH_ANYONECANPAY), std::string("NONE|ANYONECANPAY")},
{static_cast<unsigned char>(SIGHASH_SINGLE), std::string("SINGLE")},
{static_cast<unsigned char>(SIGHASH_SINGLE|SIGHASH_ANYONECANPAY), std::string("SINGLE|ANYONECANPAY")},
};
std::string SighashToStr(unsigned char sighash_type)
{
const auto& it = mapSigHashTypes.find(sighash_type);
if (it == mapSigHashTypes.end()) return "";
return it->second;
}
/**
* 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.
*/
std::string ScriptToAsmStr(const CScript& script, const bool fAttemptSighashDecode)
{
std::string str;
opcodetype opcode;
std::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<std::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()) {
std::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, nullptr)) {
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;
}
std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags)
{
CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION | serializeFlags);
ssTx << tx;
return HexStr(ssTx.begin(), ssTx.end());
}
void ScriptToUniv(const CScript& script, UniValue& out, bool include_address)
{
out.pushKV("asm", ScriptToAsmStr(script));
out.pushKV("hex", HexStr(script.begin(), script.end()));
std::vector<std::vector<unsigned char>> solns;
txnouttype type = Solver(script, solns);
out.pushKV("type", GetTxnOutputType(type));
CTxDestination address;
if (include_address && ExtractDestination(script, address)) {
out.pushKV("address", EncodeDestination(address));
}
}
// ELEMENTS:
static void SidechainScriptPubKeyToJSON(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex, bool is_parent_chain)
{
const std::string prefix = is_parent_chain ? "pegout_" : "";
txnouttype type;
std::vector<CTxDestination> addresses;
int nRequired;
out.pushKV(prefix + "asm", ScriptToAsmStr(scriptPubKey));
if (fIncludeHex)
out.pushKV(prefix + "hex", HexStr(scriptPubKey.begin(), scriptPubKey.end()));
if (!ExtractDestinations(scriptPubKey, type, addresses, nRequired)) {
out.pushKV(prefix + "type", GetTxnOutputType(type));
return;
}
out.pushKV(prefix + "reqSigs", nRequired);
out.pushKV(prefix + "type", GetTxnOutputType(type));
UniValue a(UniValue::VARR);
if (is_parent_chain) {
for (const CTxDestination& addr : addresses) {
a.push_back(EncodeParentDestination(addr));
}
} else {
for (const CTxDestination& addr : addresses) {
a.push_back(EncodeDestination(addr));
}
}
out.pushKV(prefix + "addresses", a);
}
void ScriptPubKeyToUniv(const CScript& scriptPubKey,
UniValue& out, bool fIncludeHex)
{
SidechainScriptPubKeyToJSON(scriptPubKey, out, fIncludeHex, false);
uint256 pegout_chain;
CScript pegout_scriptpubkey;
if (scriptPubKey.IsPegoutScript(pegout_chain, pegout_scriptpubkey)) {
out.pushKV("pegout_chain", pegout_chain.GetHex());
SidechainScriptPubKeyToJSON(pegout_scriptpubkey, out, fIncludeHex, true);
}
}
void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry, bool include_hex, int serialize_flags)
{
entry.pushKV("txid", tx.GetHash().GetHex());
entry.pushKV("hash", tx.GetWitnessHash().GetHex());
if (g_con_elementsmode) {
entry.pushKV("wtxid", tx.GetWitnessHash().GetHex());
entry.pushKV("withash", tx.GetWitnessOnlyHash().GetHex());
}
entry.pushKV("version", tx.nVersion);
entry.pushKV("size", (int)::GetSerializeSize(tx, PROTOCOL_VERSION));
entry.pushKV("vsize", (GetTransactionWeight(tx) + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR);
entry.pushKV("weight", GetTransactionWeight(tx));
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);
in.pushKV("is_pegin", txin.m_is_pegin);
}
in.pushKV("sequence", (int64_t)txin.nSequence);
if (tx.witness.vtxinwit.size() > i) {
const CScriptWitness &scriptWitness = tx.witness.vtxinwit[i].scriptWitness;
if (!scriptWitness.IsNull()) {
UniValue txinwitness(UniValue::VARR);
for (const auto &item : scriptWitness.stack) {
txinwitness.push_back(HexStr(item.begin(), item.end()));
}
in.pushKV("txinwitness", txinwitness);
}
}
// ELEMENTS:
if (tx.witness.vtxinwit.size() > i && !tx.witness.vtxinwit[i].m_pegin_witness.IsNull()) {
UniValue pegin_witness(UniValue::VARR);
for (const auto& item : tx.witness.vtxinwit[i].m_pegin_witness.stack) {
pegin_witness.push_back(HexStr(item.begin(), item.end()));
}
in.pushKV("pegin_witness", pegin_witness);
}
const CAssetIssuance& issuance = txin.assetIssuance;
if (!issuance.IsNull()) {
UniValue issue(UniValue::VOBJ);
issue.pushKV("assetBlindingNonce", issuance.assetBlindingNonce.GetHex());
CAsset asset;
CAsset token;
uint256 entropy;
if (issuance.assetBlindingNonce.IsNull()) {
GenerateAssetEntropy(entropy, txin.prevout, issuance.assetEntropy);
issue.pushKV("assetEntropy", entropy.GetHex());
CalculateAsset(asset, entropy);
CalculateReissuanceToken(token, entropy, issuance.nAmount.IsCommitment());
issue.pushKV("isreissuance", false);
issue.pushKV("token", token.GetHex());
}
else {
issue.pushKV("assetEntropy", issuance.assetEntropy.GetHex());
issue.pushKV("isreissuance", true);
CalculateAsset(asset, issuance.assetEntropy);
}
issue.pushKV("asset", asset.GetHex());
if (issuance.nAmount.IsExplicit()) {
issue.pushKV("assetamount", ValueFromAmount(issuance.nAmount.GetAmount()));
} else if (issuance.nAmount.IsCommitment()) {
issue.pushKV("assetamountcommitment", HexStr(issuance.nAmount.vchCommitment));
}
if (issuance.nInflationKeys.IsExplicit()) {
issue.pushKV("tokenamount", ValueFromAmount(issuance.nInflationKeys.GetAmount()));
} else if (issuance.nInflationKeys.IsCommitment()) {
issue.pushKV("tokenamountcommitment", HexStr(issuance.nInflationKeys.vchCommitment));
}
in.pushKV("issuance", issue);
}
// END ELEMENTS
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);
if (txout.nValue.IsExplicit()) {
out.pushKV("value", ValueFromAmount(txout.nValue.GetAmount()));
} else {
int exp;
int mantissa;
uint64_t minv;
uint64_t maxv;
const CTxOutWitness* ptxoutwit = tx.witness.vtxoutwit.size() <= i? NULL: &tx.witness.vtxoutwit[i];
if (ptxoutwit) {
if (ptxoutwit->vchRangeproof.size() && secp256k1_rangeproof_info(secp256k1_blind_context, &exp, &mantissa, &minv, &maxv, &ptxoutwit->vchRangeproof[0], ptxoutwit->vchRangeproof.size())) {
if (exp == -1) {
out.pushKV("value", ValueFromAmount((CAmount)minv));
} else {
out.pushKV("value-minimum", ValueFromAmount((CAmount)minv));
out.pushKV("value-maximum", ValueFromAmount((CAmount)maxv));
}
out.pushKV("ct-exponent", exp);
out.pushKV("ct-bits", mantissa);
}
if (ptxoutwit->vchSurjectionproof.size()) {
out.pushKV("surjectionproof", HexStr(ptxoutwit->vchSurjectionproof));
}
}
out.pushKV("valuecommitment", txout.nValue.GetHex());
}
if (g_con_elementsmode) {
if (txout.nAsset.IsExplicit()) {
out.pushKV("asset", txout.nAsset.GetAsset().GetHex());
} else {
out.pushKV("assetcommitment", txout.nAsset.GetHex());
}
out.pushKV("commitmentnonce", txout.nNonce.GetHex());
CPubKey pubkey(txout.nNonce.vchCommitment);
out.pushKV("commitmentnonce_fully_valid", pubkey.IsFullyValid());
}
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());
if (include_hex) {
entry.pushKV("hex", EncodeHexTx(tx, serialize_flags)); // The hex-encoded transaction. Used the name "hex" to be consistent with the verbose output of "getrawtransaction".
}
}
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