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598 lines
17 KiB
598 lines
17 KiB
16 years ago
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// Copyright (c) 2009 Satoshi Nakamoto
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// Distributed under the MIT/X11 software license, see the accompanying
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// file license.txt or http://www.opensource.org/licenses/mit-license.php.
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class CTransaction;
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enum
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{
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SIGHASH_ALL = 1,
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SIGHASH_NONE = 2,
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SIGHASH_SINGLE = 3,
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SIGHASH_ANYONECANPAY = 0x80,
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};
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enum opcodetype
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{
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// push value
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OP_0=0,
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OP_FALSE=OP_0,
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OP_PUSHDATA1=76,
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OP_PUSHDATA2,
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OP_PUSHDATA4,
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OP_1NEGATE,
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OP_RESERVED,
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OP_1,
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OP_TRUE=OP_1,
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OP_2,
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OP_3,
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OP_4,
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OP_5,
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OP_6,
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OP_7,
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OP_8,
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OP_9,
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OP_10,
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OP_11,
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OP_12,
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OP_13,
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OP_14,
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OP_15,
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OP_16,
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// control
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OP_NOP,
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OP_VER,
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OP_IF,
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OP_NOTIF,
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OP_VERIF,
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OP_VERNOTIF,
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OP_ELSE,
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OP_ENDIF,
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OP_VERIFY,
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OP_RETURN,
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// stack ops
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OP_TOALTSTACK,
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OP_FROMALTSTACK,
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OP_2DROP,
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OP_2DUP,
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OP_3DUP,
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OP_2OVER,
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OP_2ROT,
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OP_2SWAP,
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OP_IFDUP,
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OP_DEPTH,
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OP_DROP,
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OP_DUP,
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OP_NIP,
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OP_OVER,
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OP_PICK,
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OP_ROLL,
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OP_ROT,
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OP_SWAP,
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OP_TUCK,
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// splice ops
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OP_CAT,
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OP_SUBSTR,
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OP_LEFT,
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OP_RIGHT,
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OP_SIZE,
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// bit logic
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OP_INVERT,
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OP_AND,
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OP_OR,
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OP_XOR,
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OP_EQUAL,
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OP_EQUALVERIFY,
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OP_RESERVED1,
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OP_RESERVED2,
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// numeric
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OP_1ADD,
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OP_1SUB,
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OP_2MUL,
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OP_2DIV,
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OP_NEGATE,
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OP_ABS,
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OP_NOT,
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OP_0NOTEQUAL,
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OP_ADD,
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OP_SUB,
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OP_MUL,
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OP_DIV,
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OP_MOD,
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OP_LSHIFT,
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OP_RSHIFT,
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OP_BOOLAND,
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OP_BOOLOR,
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OP_NUMEQUAL,
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OP_NUMEQUALVERIFY,
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OP_NUMNOTEQUAL,
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OP_LESSTHAN,
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OP_GREATERTHAN,
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OP_LESSTHANOREQUAL,
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OP_GREATERTHANOREQUAL,
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OP_MIN,
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OP_MAX,
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OP_WITHIN,
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// crypto
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OP_RIPEMD160,
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OP_SHA1,
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OP_SHA256,
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OP_HASH160,
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OP_HASH256,
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OP_CODESEPARATOR,
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OP_CHECKSIG,
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OP_CHECKSIGVERIFY,
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OP_CHECKMULTISIG,
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OP_CHECKMULTISIGVERIFY,
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// multi-byte opcodes
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OP_SINGLEBYTE_END = 0xF0,
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OP_DOUBLEBYTE_BEGIN = 0xF000,
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// template matching params
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OP_PUBKEY,
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OP_PUBKEYHASH,
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OP_INVALIDOPCODE = 0xFFFF,
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};
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inline const char* GetOpName(opcodetype opcode)
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{
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switch (opcode)
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{
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// push value
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case OP_0 : return "0";
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case OP_PUSHDATA1 : return "OP_PUSHDATA1";
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case OP_PUSHDATA2 : return "OP_PUSHDATA2";
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case OP_PUSHDATA4 : return "OP_PUSHDATA4";
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case OP_1NEGATE : return "-1";
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case OP_RESERVED : return "OP_RESERVED";
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case OP_1 : return "1";
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case OP_2 : return "2";
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case OP_3 : return "3";
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case OP_4 : return "4";
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case OP_5 : return "5";
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case OP_6 : return "6";
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case OP_7 : return "7";
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case OP_8 : return "8";
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case OP_9 : return "9";
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case OP_10 : return "10";
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case OP_11 : return "11";
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case OP_12 : return "12";
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case OP_13 : return "13";
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case OP_14 : return "14";
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case OP_15 : return "15";
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case OP_16 : return "16";
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// control
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case OP_NOP : return "OP_NOP";
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case OP_VER : return "OP_VER";
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case OP_IF : return "OP_IF";
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case OP_NOTIF : return "OP_NOTIF";
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case OP_VERIF : return "OP_VERIF";
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case OP_VERNOTIF : return "OP_VERNOTIF";
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case OP_ELSE : return "OP_ELSE";
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case OP_ENDIF : return "OP_ENDIF";
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case OP_VERIFY : return "OP_VERIFY";
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case OP_RETURN : return "OP_RETURN";
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// stack ops
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case OP_TOALTSTACK : return "OP_TOALTSTACK";
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case OP_FROMALTSTACK : return "OP_FROMALTSTACK";
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case OP_2DROP : return "OP_2DROP";
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case OP_2DUP : return "OP_2DUP";
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case OP_3DUP : return "OP_3DUP";
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case OP_2OVER : return "OP_2OVER";
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case OP_2ROT : return "OP_2ROT";
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case OP_2SWAP : return "OP_2SWAP";
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case OP_IFDUP : return "OP_IFDUP";
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case OP_DEPTH : return "OP_DEPTH";
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case OP_DROP : return "OP_DROP";
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case OP_DUP : return "OP_DUP";
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case OP_NIP : return "OP_NIP";
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case OP_OVER : return "OP_OVER";
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case OP_PICK : return "OP_PICK";
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case OP_ROLL : return "OP_ROLL";
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case OP_ROT : return "OP_ROT";
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case OP_SWAP : return "OP_SWAP";
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case OP_TUCK : return "OP_TUCK";
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// splice ops
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case OP_CAT : return "OP_CAT";
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case OP_SUBSTR : return "OP_SUBSTR";
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case OP_LEFT : return "OP_LEFT";
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case OP_RIGHT : return "OP_RIGHT";
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case OP_SIZE : return "OP_SIZE";
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// bit logic
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case OP_INVERT : return "OP_INVERT";
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case OP_AND : return "OP_AND";
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case OP_OR : return "OP_OR";
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case OP_XOR : return "OP_XOR";
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case OP_EQUAL : return "OP_EQUAL";
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case OP_EQUALVERIFY : return "OP_EQUALVERIFY";
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case OP_RESERVED1 : return "OP_RESERVED1";
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case OP_RESERVED2 : return "OP_RESERVED2";
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// numeric
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case OP_1ADD : return "OP_1ADD";
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case OP_1SUB : return "OP_1SUB";
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case OP_2MUL : return "OP_2MUL";
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case OP_2DIV : return "OP_2DIV";
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case OP_NEGATE : return "OP_NEGATE";
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case OP_ABS : return "OP_ABS";
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case OP_NOT : return "OP_NOT";
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case OP_0NOTEQUAL : return "OP_0NOTEQUAL";
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case OP_ADD : return "OP_ADD";
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case OP_SUB : return "OP_SUB";
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case OP_MUL : return "OP_MUL";
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case OP_DIV : return "OP_DIV";
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case OP_MOD : return "OP_MOD";
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case OP_LSHIFT : return "OP_LSHIFT";
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case OP_RSHIFT : return "OP_RSHIFT";
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case OP_BOOLAND : return "OP_BOOLAND";
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case OP_BOOLOR : return "OP_BOOLOR";
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case OP_NUMEQUAL : return "OP_NUMEQUAL";
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case OP_NUMEQUALVERIFY : return "OP_NUMEQUALVERIFY";
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case OP_NUMNOTEQUAL : return "OP_NUMNOTEQUAL";
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case OP_LESSTHAN : return "OP_LESSTHAN";
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case OP_GREATERTHAN : return "OP_GREATERTHAN";
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case OP_LESSTHANOREQUAL : return "OP_LESSTHANOREQUAL";
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case OP_GREATERTHANOREQUAL : return "OP_GREATERTHANOREQUAL";
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case OP_MIN : return "OP_MIN";
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case OP_MAX : return "OP_MAX";
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case OP_WITHIN : return "OP_WITHIN";
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// crypto
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case OP_RIPEMD160 : return "OP_RIPEMD160";
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case OP_SHA1 : return "OP_SHA1";
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case OP_SHA256 : return "OP_SHA256";
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case OP_HASH160 : return "OP_HASH160";
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case OP_HASH256 : return "OP_HASH256";
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case OP_CODESEPARATOR : return "OP_CODESEPARATOR";
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case OP_CHECKSIG : return "OP_CHECKSIG";
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case OP_CHECKSIGVERIFY : return "OP_CHECKSIGVERIFY";
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case OP_CHECKMULTISIG : return "OP_CHECKMULTISIG";
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case OP_CHECKMULTISIGVERIFY : return "OP_CHECKMULTISIGVERIFY";
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// multi-byte opcodes
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case OP_SINGLEBYTE_END : return "OP_SINGLEBYTE_END";
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case OP_DOUBLEBYTE_BEGIN : return "OP_DOUBLEBYTE_BEGIN";
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case OP_PUBKEY : return "OP_PUBKEY";
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case OP_PUBKEYHASH : return "OP_PUBKEYHASH";
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case OP_INVALIDOPCODE : return "OP_INVALIDOPCODE";
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default:
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return "UNKNOWN_OPCODE";
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}
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};
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inline string ValueString(const vector<unsigned char>& vch)
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{
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if (vch.size() <= 4)
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return strprintf("%d", CBigNum(vch).getint());
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else
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return HexNumStr(vch.begin(), vch.end());
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//return string("(") + HexStr(vch.begin(), vch.end()) + string(")");
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}
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inline string StackString(const vector<vector<unsigned char> >& vStack)
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{
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string str;
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foreach(const vector<unsigned char>& vch, vStack)
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{
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if (!str.empty())
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str += " ";
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str += ValueString(vch);
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}
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return str;
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}
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class CScript : public vector<unsigned char>
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{
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protected:
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CScript& push_int64(int64 n)
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{
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if (n == -1 || (n >= 1 && n <= 16))
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{
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push_back(n + (OP_1 - 1));
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}
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else
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{
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CBigNum bn(n);
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*this << bn.getvch();
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}
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return (*this);
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}
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CScript& push_uint64(uint64 n)
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{
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if (n == -1 || (n >= 1 && n <= 16))
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{
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push_back(n + (OP_1 - 1));
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}
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else
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{
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CBigNum bn(n);
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*this << bn.getvch();
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}
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return (*this);
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}
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public:
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CScript() { }
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CScript(const CScript& b) : vector<unsigned char>(b.begin(), b.end()) { }
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CScript(const_iterator pbegin, const_iterator pend) : vector<unsigned char>(pbegin, pend) { }
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#ifndef _MSC_VER
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CScript(const unsigned char* pbegin, const unsigned char* pend) : vector<unsigned char>(pbegin, pend) { }
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#endif
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CScript& operator+=(const CScript& b)
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{
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insert(end(), b.begin(), b.end());
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return *this;
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}
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friend CScript operator+(const CScript& a, const CScript& b)
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{
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CScript ret = a;
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ret += b;
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return (ret);
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}
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explicit CScript(char b) { operator<<(b); }
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explicit CScript(short b) { operator<<(b); }
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explicit CScript(int b) { operator<<(b); }
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explicit CScript(long b) { operator<<(b); }
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explicit CScript(int64 b) { operator<<(b); }
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explicit CScript(unsigned char b) { operator<<(b); }
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explicit CScript(unsigned int b) { operator<<(b); }
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explicit CScript(unsigned short b) { operator<<(b); }
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explicit CScript(unsigned long b) { operator<<(b); }
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explicit CScript(uint64 b) { operator<<(b); }
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explicit CScript(opcodetype b) { operator<<(b); }
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explicit CScript(const uint256& b) { operator<<(b); }
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explicit CScript(const CBigNum& b) { operator<<(b); }
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explicit CScript(const vector<unsigned char>& b) { operator<<(b); }
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CScript& operator<<(char b) { return (push_int64(b)); }
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CScript& operator<<(short b) { return (push_int64(b)); }
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CScript& operator<<(int b) { return (push_int64(b)); }
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CScript& operator<<(long b) { return (push_int64(b)); }
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CScript& operator<<(int64 b) { return (push_int64(b)); }
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CScript& operator<<(unsigned char b) { return (push_uint64(b)); }
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CScript& operator<<(unsigned int b) { return (push_uint64(b)); }
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CScript& operator<<(unsigned short b) { return (push_uint64(b)); }
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CScript& operator<<(unsigned long b) { return (push_uint64(b)); }
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CScript& operator<<(uint64 b) { return (push_uint64(b)); }
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CScript& operator<<(opcodetype opcode)
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{
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if (opcode <= OP_SINGLEBYTE_END)
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{
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insert(end(), (unsigned char)opcode);
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}
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else
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{
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assert(opcode >= OP_DOUBLEBYTE_BEGIN);
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insert(end(), (unsigned char)(opcode >> 8));
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insert(end(), (unsigned char)(opcode & 0xFF));
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}
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return (*this);
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}
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CScript& operator<<(const uint160& b)
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{
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insert(end(), sizeof(b));
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insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
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return (*this);
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}
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CScript& operator<<(const uint256& b)
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{
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insert(end(), sizeof(b));
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insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
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return (*this);
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}
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CScript& operator<<(const CBigNum& b)
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{
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*this << b.getvch();
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return (*this);
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}
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CScript& operator<<(const vector<unsigned char>& b)
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{
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||
|
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);
|