diff options
| author | sirius-m <sirius-m@1a98c847-1fd6-4fd8-948a-caf3550aa51b> | 2009-08-30 03:46:39 +0000 |
|---|---|---|
| committer | sirius-m <sirius-m@1a98c847-1fd6-4fd8-948a-caf3550aa51b> | 2009-08-30 03:46:39 +0000 |
| commit | e071a3f6c06f41068ad17134189a4ac3073ef76b (patch) | |
| tree | 1e8dec58f70505a3dd554918ce9b07384d047415 /script.h | |
First commit
git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@1 1a98c847-1fd6-4fd8-948a-caf3550aa51b
Diffstat (limited to 'script.h')
| -rw-r--r-- | script.h | 597 |
1 files changed, 597 insertions, 0 deletions
diff --git a/script.h b/script.h new file mode 100644 index 0000000000..0d977734b9 --- /dev/null +++ b/script.h @@ -0,0 +1,597 @@ +// Copyright (c) 2009 Satoshi Nakamoto
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+
+class CTransaction;
+
+enum
+{
+ SIGHASH_ALL = 1,
+ SIGHASH_NONE = 2,
+ SIGHASH_SINGLE = 3,
+ SIGHASH_ANYONECANPAY = 0x80,
+};
+
+
+
+enum opcodetype
+{
+ // push value
+ OP_0=0,
+ OP_FALSE=OP_0,
+ OP_PUSHDATA1=76,
+ OP_PUSHDATA2,
+ OP_PUSHDATA4,
+ OP_1NEGATE,
+ OP_RESERVED,
+ OP_1,
+ OP_TRUE=OP_1,
+ OP_2,
+ OP_3,
+ OP_4,
+ OP_5,
+ OP_6,
+ OP_7,
+ OP_8,
+ OP_9,
+ OP_10,
+ OP_11,
+ OP_12,
+ OP_13,
+ OP_14,
+ OP_15,
+ OP_16,
+
+ // control
+ OP_NOP,
+ OP_VER,
+ OP_IF,
+ OP_NOTIF,
+ OP_VERIF,
+ OP_VERNOTIF,
+ OP_ELSE,
+ OP_ENDIF,
+ OP_VERIFY,
+ OP_RETURN,
+
+ // stack ops
+ OP_TOALTSTACK,
+ OP_FROMALTSTACK,
+ OP_2DROP,
+ OP_2DUP,
+ OP_3DUP,
+ OP_2OVER,
+ OP_2ROT,
+ OP_2SWAP,
+ OP_IFDUP,
+ OP_DEPTH,
+ OP_DROP,
+ OP_DUP,
+ OP_NIP,
+ OP_OVER,
+ OP_PICK,
+ OP_ROLL,
+ OP_ROT,
+ OP_SWAP,
+ OP_TUCK,
+
+ // splice ops
+ OP_CAT,
+ OP_SUBSTR,
+ OP_LEFT,
+ OP_RIGHT,
+ OP_SIZE,
+
+ // bit logic
+ OP_INVERT,
+ OP_AND,
+ OP_OR,
+ OP_XOR,
+ OP_EQUAL,
+ OP_EQUALVERIFY,
+ OP_RESERVED1,
+ OP_RESERVED2,
+
+ // numeric
+ OP_1ADD,
+ OP_1SUB,
+ OP_2MUL,
+ OP_2DIV,
+ OP_NEGATE,
+ OP_ABS,
+ OP_NOT,
+ OP_0NOTEQUAL,
+
+ OP_ADD,
+ OP_SUB,
+ OP_MUL,
+ OP_DIV,
+ OP_MOD,
+ OP_LSHIFT,
+ OP_RSHIFT,
+
+ OP_BOOLAND,
+ OP_BOOLOR,
+ OP_NUMEQUAL,
+ OP_NUMEQUALVERIFY,
+ OP_NUMNOTEQUAL,
+ OP_LESSTHAN,
+ OP_GREATERTHAN,
+ OP_LESSTHANOREQUAL,
+ OP_GREATERTHANOREQUAL,
+ OP_MIN,
+ OP_MAX,
+
+ OP_WITHIN,
+
+ // crypto
+ OP_RIPEMD160,
+ OP_SHA1,
+ OP_SHA256,
+ OP_HASH160,
+ OP_HASH256,
+ OP_CODESEPARATOR,
+ OP_CHECKSIG,
+ OP_CHECKSIGVERIFY,
+ OP_CHECKMULTISIG,
+ OP_CHECKMULTISIGVERIFY,
+
+
+ // multi-byte opcodes
+ OP_SINGLEBYTE_END = 0xF0,
+ OP_DOUBLEBYTE_BEGIN = 0xF000,
+
+ // template matching params
+ OP_PUBKEY,
+ OP_PUBKEYHASH,
+
+
+
+ OP_INVALIDOPCODE = 0xFFFF,
+};
+
+
+
+
+
+
+
+
+inline const char* GetOpName(opcodetype opcode)
+{
+ switch (opcode)
+ {
+ // push value
+ case OP_0 : return "0";
+ case OP_PUSHDATA1 : return "OP_PUSHDATA1";
+ case OP_PUSHDATA2 : return "OP_PUSHDATA2";
+ case OP_PUSHDATA4 : return "OP_PUSHDATA4";
+ case OP_1NEGATE : return "-1";
+ case OP_RESERVED : return "OP_RESERVED";
+ case OP_1 : return "1";
+ case OP_2 : return "2";
+ case OP_3 : return "3";
+ case OP_4 : return "4";
+ case OP_5 : return "5";
+ case OP_6 : return "6";
+ case OP_7 : return "7";
+ case OP_8 : return "8";
+ case OP_9 : return "9";
+ case OP_10 : return "10";
+ case OP_11 : return "11";
+ case OP_12 : return "12";
+ case OP_13 : return "13";
+ case OP_14 : return "14";
+ case OP_15 : return "15";
+ case OP_16 : return "16";
+
+ // control
+ case OP_NOP : return "OP_NOP";
+ case OP_VER : return "OP_VER";
+ case OP_IF : return "OP_IF";
+ case OP_NOTIF : return "OP_NOTIF";
+ case OP_VERIF : return "OP_VERIF";
+ case OP_VERNOTIF : return "OP_VERNOTIF";
+ case OP_ELSE : return "OP_ELSE";
+ case OP_ENDIF : return "OP_ENDIF";
+ case OP_VERIFY : return "OP_VERIFY";
+ case OP_RETURN : return "OP_RETURN";
+
+ // stack ops
+ case OP_TOALTSTACK : return "OP_TOALTSTACK";
+ case OP_FROMALTSTACK : return "OP_FROMALTSTACK";
+ case OP_2DROP : return "OP_2DROP";
+ case OP_2DUP : return "OP_2DUP";
+ case OP_3DUP : return "OP_3DUP";
+ case OP_2OVER : return "OP_2OVER";
+ case OP_2ROT : return "OP_2ROT";
+ case OP_2SWAP : return "OP_2SWAP";
+ case OP_IFDUP : return "OP_IFDUP";
+ case OP_DEPTH : return "OP_DEPTH";
+ case OP_DROP : return "OP_DROP";
+ case OP_DUP : return "OP_DUP";
+ case OP_NIP : return "OP_NIP";
+ case OP_OVER : return "OP_OVER";
+ case OP_PICK : return "OP_PICK";
+ case OP_ROLL : return "OP_ROLL";
+ case OP_ROT : return "OP_ROT";
+ case OP_SWAP : return "OP_SWAP";
+ case OP_TUCK : return "OP_TUCK";
+
+ // splice ops
+ case OP_CAT : return "OP_CAT";
+ case OP_SUBSTR : return "OP_SUBSTR";
+ case OP_LEFT : return "OP_LEFT";
+ case OP_RIGHT : return "OP_RIGHT";
+ case OP_SIZE : return "OP_SIZE";
+
+ // bit logic
+ case OP_INVERT : return "OP_INVERT";
+ case OP_AND : return "OP_AND";
+ case OP_OR : return "OP_OR";
+ case OP_XOR : return "OP_XOR";
+ case OP_EQUAL : return "OP_EQUAL";
+ case OP_EQUALVERIFY : return "OP_EQUALVERIFY";
+ case OP_RESERVED1 : return "OP_RESERVED1";
+ case OP_RESERVED2 : return "OP_RESERVED2";
+
+ // numeric
+ case OP_1ADD : return "OP_1ADD";
+ case OP_1SUB : return "OP_1SUB";
+ case OP_2MUL : return "OP_2MUL";
+ case OP_2DIV : return "OP_2DIV";
+ case OP_NEGATE : return "OP_NEGATE";
+ case OP_ABS : return "OP_ABS";
+ case OP_NOT : return "OP_NOT";
+ case OP_0NOTEQUAL : return "OP_0NOTEQUAL";
+ case OP_ADD : return "OP_ADD";
+ case OP_SUB : return "OP_SUB";
+ case OP_MUL : return "OP_MUL";
+ case OP_DIV : return "OP_DIV";
+ case OP_MOD : return "OP_MOD";
+ case OP_LSHIFT : return "OP_LSHIFT";
+ case OP_RSHIFT : return "OP_RSHIFT";
+ case OP_BOOLAND : return "OP_BOOLAND";
+ case OP_BOOLOR : return "OP_BOOLOR";
+ case OP_NUMEQUAL : return "OP_NUMEQUAL";
+ case OP_NUMEQUALVERIFY : return "OP_NUMEQUALVERIFY";
+ case OP_NUMNOTEQUAL : return "OP_NUMNOTEQUAL";
+ case OP_LESSTHAN : return "OP_LESSTHAN";
+ case OP_GREATERTHAN : return "OP_GREATERTHAN";
+ case OP_LESSTHANOREQUAL : return "OP_LESSTHANOREQUAL";
+ case OP_GREATERTHANOREQUAL : return "OP_GREATERTHANOREQUAL";
+ case OP_MIN : return "OP_MIN";
+ case OP_MAX : return "OP_MAX";
+ case OP_WITHIN : return "OP_WITHIN";
+
+ // crypto
+ case OP_RIPEMD160 : return "OP_RIPEMD160";
+ case OP_SHA1 : return "OP_SHA1";
+ case OP_SHA256 : return "OP_SHA256";
+ case OP_HASH160 : return "OP_HASH160";
+ case OP_HASH256 : return "OP_HASH256";
+ case OP_CODESEPARATOR : return "OP_CODESEPARATOR";
+ case OP_CHECKSIG : return "OP_CHECKSIG";
+ case OP_CHECKSIGVERIFY : return "OP_CHECKSIGVERIFY";
+ case OP_CHECKMULTISIG : return "OP_CHECKMULTISIG";
+ case OP_CHECKMULTISIGVERIFY : return "OP_CHECKMULTISIGVERIFY";
+
+
+
+ // multi-byte opcodes
+ case OP_SINGLEBYTE_END : return "OP_SINGLEBYTE_END";
+ case OP_DOUBLEBYTE_BEGIN : return "OP_DOUBLEBYTE_BEGIN";
+ case OP_PUBKEY : return "OP_PUBKEY";
+ case OP_PUBKEYHASH : return "OP_PUBKEYHASH";
+
+
+
+ case OP_INVALIDOPCODE : return "OP_INVALIDOPCODE";
+ default:
+ return "UNKNOWN_OPCODE";
+ }
+};
+
+
+
+
+inline string ValueString(const vector<unsigned char>& vch)
+{
+ if (vch.size() <= 4)
+ return strprintf("%d", CBigNum(vch).getint());
+ else
+ return HexNumStr(vch.begin(), vch.end());
+ //return string("(") + HexStr(vch.begin(), vch.end()) + string(")");
+}
+
+inline string StackString(const vector<vector<unsigned char> >& vStack)
+{
+ string str;
+ foreach(const vector<unsigned char>& vch, vStack)
+ {
+ if (!str.empty())
+ str += " ";
+ str += ValueString(vch);
+ }
+ return str;
+}
+
+
+
+
+
+
+
+
+
+class CScript : public vector<unsigned char>
+{
+protected:
+ CScript& push_int64(int64 n)
+ {
+ if (n == -1 || (n >= 1 && n <= 16))
+ {
+ push_back(n + (OP_1 - 1));
+ }
+ else
+ {
+ CBigNum bn(n);
+ *this << bn.getvch();
+ }
+ return (*this);
+ }
+
+ CScript& push_uint64(uint64 n)
+ {
+ if (n == -1 || (n >= 1 && n <= 16))
+ {
+ push_back(n + (OP_1 - 1));
+ }
+ else
+ {
+ CBigNum bn(n);
+ *this << bn.getvch();
+ }
+ return (*this);
+ }
+
+public:
+ CScript() { }
+ CScript(const CScript& b) : vector<unsigned char>(b.begin(), b.end()) { }
+ CScript(const_iterator pbegin, const_iterator pend) : vector<unsigned char>(pbegin, pend) { }
+#ifndef _MSC_VER
+ CScript(const unsigned char* pbegin, const unsigned char* pend) : vector<unsigned char>(pbegin, pend) { }
+#endif
+
+ CScript& operator+=(const CScript& b)
+ {
+ insert(end(), b.begin(), b.end());
+ return *this;
+ }
+
+ friend CScript operator+(const CScript& a, const CScript& b)
+ {
+ CScript ret = a;
+ ret += b;
+ return (ret);
+ }
+
+
+ explicit CScript(char b) { operator<<(b); }
+ explicit CScript(short b) { operator<<(b); }
+ explicit CScript(int b) { operator<<(b); }
+ explicit CScript(long b) { operator<<(b); }
+ explicit CScript(int64 b) { operator<<(b); }
+ explicit CScript(unsigned char b) { operator<<(b); }
+ explicit CScript(unsigned int b) { operator<<(b); }
+ explicit CScript(unsigned short b) { operator<<(b); }
+ explicit CScript(unsigned long b) { operator<<(b); }
+ explicit CScript(uint64 b) { operator<<(b); }
+
+ explicit CScript(opcodetype b) { operator<<(b); }
+ explicit CScript(const uint256& b) { operator<<(b); }
+ explicit CScript(const CBigNum& b) { operator<<(b); }
+ explicit CScript(const vector<unsigned char>& b) { operator<<(b); }
+
+
+ CScript& operator<<(char b) { return (push_int64(b)); }
+ CScript& operator<<(short b) { return (push_int64(b)); }
+ CScript& operator<<(int b) { return (push_int64(b)); }
+ CScript& operator<<(long b) { return (push_int64(b)); }
+ CScript& operator<<(int64 b) { return (push_int64(b)); }
+ CScript& operator<<(unsigned char b) { return (push_uint64(b)); }
+ CScript& operator<<(unsigned int b) { return (push_uint64(b)); }
+ CScript& operator<<(unsigned short b) { return (push_uint64(b)); }
+ CScript& operator<<(unsigned long b) { return (push_uint64(b)); }
+ CScript& operator<<(uint64 b) { return (push_uint64(b)); }
+
+ CScript& operator<<(opcodetype opcode)
+ {
+ if (opcode <= OP_SINGLEBYTE_END)
+ {
+ insert(end(), (unsigned char)opcode);
+ }
+ else
+ {
+ assert(opcode >= OP_DOUBLEBYTE_BEGIN);
+ insert(end(), (unsigned char)(opcode >> 8));
+ insert(end(), (unsigned char)(opcode & 0xFF));
+ }
+ return (*this);
+ }
+
+ CScript& operator<<(const uint160& b)
+ {
+ insert(end(), sizeof(b));
+ insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
+ return (*this);
+ }
+
+ CScript& operator<<(const uint256& b)
+ {
+ insert(end(), sizeof(b));
+ insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
+ return (*this);
+ }
+
+ CScript& operator<<(const CBigNum& b)
+ {
+ *this << b.getvch();
+ return (*this);
+ }
+
+ CScript& operator<<(const vector<unsigned char>& b)
+ {
+ if (b.size() < OP_PUSHDATA1)
+ {
+ insert(end(), (unsigned char)b.size());
+ }
+ else if (b.size() <= 0xff)
+ {
+ insert(end(), OP_PUSHDATA1);
+ insert(end(), (unsigned char)b.size());
+ }
+ else
+ {
+ insert(end(), OP_PUSHDATA2);
+ unsigned short nSize = b.size();
+ insert(end(), (unsigned char*)&nSize, (unsigned char*)&nSize + sizeof(nSize));
+ }
+ insert(end(), b.begin(), b.end());
+ return (*this);
+ }
+
+ CScript& operator<<(const CScript& b)
+ {
+ // I'm not sure if this should push the script or concatenate scripts.
+ // If there's ever a use for pushing a script onto a script, delete this member fn
+ assert(("warning: pushing a CScript onto a CScript with << is probably not intended, use + to concatenate", false));
+ return (*this);
+ }
+
+
+ bool GetOp(iterator& pc, opcodetype& opcodeRet, vector<unsigned char>& vchRet)
+ {
+ // This is why people hate C++
+ const_iterator pc2 = pc;
+ bool fRet = GetOp(pc2, opcodeRet, vchRet);
+ pc = begin() + (pc2 - begin());
+ return fRet;
+ }
+
+ bool GetOp(const_iterator& pc, opcodetype& opcodeRet, vector<unsigned char>& vchRet) const
+ {
+ opcodeRet = OP_INVALIDOPCODE;
+ vchRet.clear();
+ if (pc >= end())
+ return false;
+
+ // Read instruction
+ unsigned int opcode = *pc++;
+ if (opcode >= OP_SINGLEBYTE_END)
+ {
+ if (pc + 1 > end())
+ return false;
+ opcode <<= 8;
+ opcode |= *pc++;
+ }
+
+ // Immediate operand
+ if (opcode <= OP_PUSHDATA4)
+ {
+ unsigned int nSize = opcode;
+ if (opcode == OP_PUSHDATA1)
+ {
+ if (pc + 1 > end())
+ return false;
+ nSize = *pc++;
+ }
+ else if (opcode == OP_PUSHDATA2)
+ {
+ if (pc + 2 > end())
+ return false;
+ nSize = 0;
+ memcpy(&nSize, &pc[0], 2);
+ pc += 2;
+ }
+ else if (opcode == OP_PUSHDATA4)
+ {
+ if (pc + 4 > end())
+ return false;
+ memcpy(&nSize, &pc[0], 4);
+ pc += 4;
+ }
+ if (pc + nSize > end())
+ return false;
+ vchRet.assign(pc, pc + nSize);
+ pc += nSize;
+ }
+
+ opcodeRet = (opcodetype)opcode;
+ return true;
+ }
+
+
+ void FindAndDelete(const CScript& b)
+ {
+ iterator pc = begin();
+ opcodetype opcode;
+ vector<unsigned char> vchPushValue;
+ int count = 0;
+ do
+ {
+ while (end() - pc >= b.size() && memcmp(&pc[0], &b[0], b.size()) == 0)
+ {
+ erase(pc, pc + b.size());
+ count++;
+ }
+ }
+ while (GetOp(pc, opcode, vchPushValue));
+ //printf("FindAndDeleted deleted %d items\n", count); /// debug
+ }
+
+
+ void PrintHex() const
+ {
+ printf("CScript(%s)\n", HexStr(begin(), end()).c_str());
+ }
+
+ string ToString() const
+ {
+ string str;
+ opcodetype opcode;
+ vector<unsigned char> vch;
+ const_iterator it = begin();
+ while (GetOp(it, opcode, vch))
+ {
+ if (!str.empty())
+ str += " ";
+ if (opcode <= OP_PUSHDATA4)
+ str += ValueString(vch);
+ else
+ str += GetOpName(opcode);
+ }
+ return str;
+ }
+
+ void print() const
+ {
+ printf("%s\n", ToString().c_str());
+ }
+};
+
+
+
+
+
+
+
+
+bool EvalScript(const CScript& script, const CTransaction& txTo, unsigned int nIn, int nHashType=0,
+ vector<vector<unsigned char> >* pvStackRet=NULL);
+uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
+bool IsMine(const CScript& scriptPubKey);
+bool ExtractPubKey(const CScript& scriptPubKey, bool fMineOnly, vector<unsigned char>& vchPubKeyRet);
+bool ExtractHash160(const CScript& scriptPubKey, uint160& hash160Ret);
+bool SignSignature(const CTransaction& txFrom, CTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL, CScript scriptPrereq=CScript());
+bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int nHashType=0);
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