Line data Source code
1 : // Copyright (c) 2009-2019 The Bitcoin Core developers
2 : // Distributed under the MIT software license, see the accompanying
3 : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 :
5 : #include <core_io.h>
6 :
7 : #include <consensus/consensus.h>
8 : #include <consensus/validation.h>
9 : #include <key_io.h>
10 : #include <script/script.h>
11 : #include <script/standard.h>
12 : #include <serialize.h>
13 : #include <streams.h>
14 : #include <univalue.h>
15 : #include <util/system.h>
16 : #include <util/strencodings.h>
17 :
18 415616 : UniValue ValueFromAmount(const CAmount& amount)
19 : {
20 415616 : bool sign = amount < 0;
21 415616 : int64_t n_abs = (sign ? -amount : amount);
22 415616 : int64_t quotient = n_abs / COIN;
23 415616 : int64_t remainder = n_abs % COIN;
24 415616 : return UniValue(UniValue::VNUM,
25 415616 : strprintf("%s%d.%08d", sign ? "-" : "", quotient, remainder));
26 415616 : }
27 :
28 268 : std::string FormatScript(const CScript& script)
29 : {
30 268 : std::string ret;
31 268 : CScript::const_iterator it = script.begin();
32 268 : opcodetype op;
33 867 : while (it != script.end()) {
34 599 : CScript::const_iterator it2 = it;
35 599 : std::vector<unsigned char> vch;
36 599 : if (script.GetOp(it, op, vch)) {
37 599 : if (op == OP_0) {
38 63 : ret += "0 ";
39 63 : continue;
40 536 : } else if ((op >= OP_1 && op <= OP_16) || op == OP_1NEGATE) {
41 63 : ret += strprintf("%i ", op - OP_1NEGATE - 1);
42 63 : continue;
43 473 : } else if (op >= OP_NOP && op <= OP_NOP10) {
44 178 : std::string str(GetOpName(op));
45 178 : if (str.substr(0, 3) == std::string("OP_")) {
46 178 : ret += str.substr(3, std::string::npos) + " ";
47 178 : continue;
48 : }
49 178 : }
50 295 : if (vch.size() > 0) {
51 590 : ret += strprintf("0x%x 0x%x ", HexStr(std::vector<uint8_t>(it2, it - vch.size())),
52 295 : HexStr(std::vector<uint8_t>(it - vch.size(), it)));
53 295 : } else {
54 0 : ret += strprintf("0x%x ", HexStr(std::vector<uint8_t>(it2, it)));
55 : }
56 295 : continue;
57 : }
58 0 : ret += strprintf("0x%x ", HexStr(std::vector<uint8_t>(it2, script.end())));
59 0 : break;
60 599 : }
61 268 : return ret.substr(0, ret.size() - 1);
62 268 : }
63 :
64 4386 : const std::map<unsigned char, std::string> mapSigHashTypes = {
65 731 : {static_cast<unsigned char>(SIGHASH_ALL), std::string("ALL")},
66 731 : {static_cast<unsigned char>(SIGHASH_ALL|SIGHASH_ANYONECANPAY), std::string("ALL|ANYONECANPAY")},
67 731 : {static_cast<unsigned char>(SIGHASH_NONE), std::string("NONE")},
68 731 : {static_cast<unsigned char>(SIGHASH_NONE|SIGHASH_ANYONECANPAY), std::string("NONE|ANYONECANPAY")},
69 731 : {static_cast<unsigned char>(SIGHASH_SINGLE), std::string("SINGLE")},
70 731 : {static_cast<unsigned char>(SIGHASH_SINGLE|SIGHASH_ANYONECANPAY), std::string("SINGLE|ANYONECANPAY")},
71 : };
72 :
73 2 : std::string SighashToStr(unsigned char sighash_type)
74 : {
75 2 : const auto& it = mapSigHashTypes.find(sighash_type);
76 2 : if (it == mapSigHashTypes.end()) return "";
77 2 : return it->second;
78 2 : }
79 :
80 : /**
81 : * Create the assembly string representation of a CScript object.
82 : * @param[in] script CScript object to convert into the asm string representation.
83 : * @param[in] fAttemptSighashDecode Whether to attempt to decode sighash types on data within the script that matches the format
84 : * of a signature. Only pass true for scripts you believe could contain signatures. For example,
85 : * pass false, or omit the this argument (defaults to false), for scriptPubKeys.
86 : */
87 101885 : std::string ScriptToAsmStr(const CScript& script, const bool fAttemptSighashDecode)
88 : {
89 101885 : std::string str;
90 101885 : opcodetype opcode;
91 101885 : std::vector<unsigned char> vch;
92 101885 : CScript::const_iterator pc = script.begin();
93 427498 : while (pc < script.end()) {
94 325613 : if (!str.empty()) {
95 224431 : str += " ";
96 : }
97 325613 : if (!script.GetOp(pc, opcode, vch)) {
98 0 : str += "[error]";
99 0 : return str;
100 : }
101 325613 : if (0 <= opcode && opcode <= OP_PUSHDATA4) {
102 182800 : if (vch.size() <= static_cast<std::vector<unsigned char>::size_type>(4)) {
103 16472 : str += strprintf("%d", CScriptNum(vch, false).getint());
104 16472 : } else {
105 : // the IsUnspendable check makes sure not to try to decode OP_RETURN data that may match the format of a signature
106 166328 : if (fAttemptSighashDecode && !script.IsUnspendable()) {
107 120033 : std::string strSigHashDecode;
108 : // goal: only attempt to decode a defined sighash type from data that looks like a signature within a scriptSig.
109 : // this won't decode correctly formatted public keys in Pubkey or Multisig scripts due to
110 : // the restrictions on the pubkey formats (see IsCompressedOrUncompressedPubKey) being incongruous with the
111 : // checks in CheckSignatureEncoding.
112 120033 : if (CheckSignatureEncoding(vch, SCRIPT_VERIFY_STRICTENC, nullptr)) {
113 65078 : const unsigned char chSigHashType = vch.back();
114 65078 : const auto it = mapSigHashTypes.find(chSigHashType);
115 65078 : if (it != mapSigHashTypes.end()) {
116 65078 : strSigHashDecode = "[" + it->second + "]";
117 65078 : vch.pop_back(); // remove the sighash type byte. it will be replaced by the decode.
118 65078 : }
119 65078 : }
120 120033 : str += HexStr(vch) + strSigHashDecode;
121 120033 : } else {
122 46295 : str += HexStr(vch);
123 : }
124 : }
125 : } else {
126 142813 : str += GetOpName(opcode);
127 : }
128 : }
129 101885 : return str;
130 101885 : }
131 :
132 21002 : std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags)
133 : {
134 21002 : CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION | serializeFlags);
135 21002 : ssTx << tx;
136 21002 : return HexStr(ssTx);
137 21002 : }
138 :
139 228 : void ScriptToUniv(const CScript& script, UniValue& out, bool include_address)
140 : {
141 228 : out.pushKV("asm", ScriptToAsmStr(script));
142 228 : out.pushKV("hex", HexStr(script));
143 :
144 228 : std::vector<std::vector<unsigned char>> solns;
145 228 : TxoutType type = Solver(script, solns);
146 228 : out.pushKV("type", GetTxnOutputType(type));
147 :
148 228 : CTxDestination address;
149 228 : if (include_address && ExtractDestination(script, address) && type != TxoutType::PUBKEY) {
150 92 : out.pushKV("address", EncodeDestination(address));
151 92 : }
152 228 : }
153 :
154 45987 : void ScriptPubKeyToUniv(const CScript& scriptPubKey,
155 : UniValue& out, bool fIncludeHex)
156 : {
157 45987 : TxoutType type;
158 45987 : std::vector<CTxDestination> addresses;
159 45987 : int nRequired;
160 :
161 45987 : out.pushKV("asm", ScriptToAsmStr(scriptPubKey));
162 45987 : if (fIncludeHex)
163 45966 : out.pushKV("hex", HexStr(scriptPubKey));
164 :
165 45987 : if (!ExtractDestinations(scriptPubKey, type, addresses, nRequired) || type == TxoutType::PUBKEY) {
166 93 : out.pushKV("type", GetTxnOutputType(type));
167 93 : return;
168 : }
169 :
170 45894 : out.pushKV("reqSigs", nRequired);
171 45894 : out.pushKV("type", GetTxnOutputType(type));
172 :
173 45894 : UniValue a(UniValue::VARR);
174 91793 : for (const CTxDestination& addr : addresses) {
175 45899 : a.push_back(EncodeDestination(addr));
176 : }
177 45894 : out.pushKV("addresses", a);
178 45987 : }
179 :
180 17827 : void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry, bool include_hex, int serialize_flags)
181 : {
182 17827 : entry.pushKV("txid", tx.GetHash().GetHex());
183 17827 : entry.pushKV("hash", tx.GetWitnessHash().GetHex());
184 : // Transaction version is actually unsigned in consensus checks, just signed in memory,
185 : // so cast to unsigned before giving it to the user.
186 17827 : entry.pushKV("version", static_cast<int64_t>(static_cast<uint32_t>(tx.nVersion)));
187 17827 : entry.pushKV("size", (int)::GetSerializeSize(tx, PROTOCOL_VERSION));
188 17827 : entry.pushKV("vsize", (GetTransactionWeight(tx) + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR);
189 17827 : entry.pushKV("weight", GetTransactionWeight(tx));
190 17827 : entry.pushKV("locktime", (int64_t)tx.nLockTime);
191 :
192 17827 : UniValue vin(UniValue::VARR);
193 73511 : for (unsigned int i = 0; i < tx.vin.size(); i++) {
194 55684 : const CTxIn& txin = tx.vin[i];
195 55684 : UniValue in(UniValue::VOBJ);
196 55684 : if (tx.IsCoinBase())
197 48 : in.pushKV("coinbase", HexStr(txin.scriptSig));
198 : else {
199 55636 : in.pushKV("txid", txin.prevout.hash.GetHex());
200 55636 : in.pushKV("vout", (int64_t)txin.prevout.n);
201 55636 : UniValue o(UniValue::VOBJ);
202 55636 : o.pushKV("asm", ScriptToAsmStr(txin.scriptSig, true));
203 55636 : o.pushKV("hex", HexStr(txin.scriptSig));
204 55636 : in.pushKV("scriptSig", o);
205 55636 : }
206 55684 : if (!tx.vin[i].scriptWitness.IsNull()) {
207 430 : UniValue txinwitness(UniValue::VARR);
208 1315 : for (const auto& item : tx.vin[i].scriptWitness.stack) {
209 885 : txinwitness.push_back(HexStr(item));
210 : }
211 430 : in.pushKV("txinwitness", txinwitness);
212 430 : }
213 55684 : in.pushKV("sequence", (int64_t)txin.nSequence);
214 55684 : vin.push_back(in);
215 55684 : }
216 17827 : entry.pushKV("vin", vin);
217 :
218 17827 : UniValue vout(UniValue::VARR);
219 58811 : for (unsigned int i = 0; i < tx.vout.size(); i++) {
220 40984 : const CTxOut& txout = tx.vout[i];
221 :
222 40984 : UniValue out(UniValue::VOBJ);
223 :
224 40984 : out.pushKV("value", ValueFromAmount(txout.nValue));
225 40984 : out.pushKV("n", (int64_t)i);
226 :
227 40984 : UniValue o(UniValue::VOBJ);
228 40984 : ScriptPubKeyToUniv(txout.scriptPubKey, o, true);
229 40984 : out.pushKV("scriptPubKey", o);
230 40984 : vout.push_back(out);
231 40984 : }
232 17827 : entry.pushKV("vout", vout);
233 :
234 17827 : if (!hashBlock.IsNull())
235 0 : entry.pushKV("blockhash", hashBlock.GetHex());
236 :
237 17827 : if (include_hex) {
238 17463 : entry.pushKV("hex", EncodeHexTx(tx, serialize_flags)); // The hex-encoded transaction. Used the name "hex" to be consistent with the verbose output of "getrawtransaction".
239 17463 : }
240 17827 : }
|
