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https://github.com/trezor/trezor-firmware.git
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make txapi class more universal
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parent
c3f74420a4
commit
60df691bb2
@ -12,32 +12,41 @@ except:
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import types_pb2 as proto_types
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def op_push(i):
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if i<0x4c:
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return chr(i)
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elif i<0xff:
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return '\x4c' + chr(i)
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elif i<0xffff:
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return '\x4d' + struct.pack("<H", i)
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def op_push_data(data):
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l = len(data)
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if l < 0x4C:
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return chr(l) + data
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elif i < 0xFF:
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return '\x4C' + chr(l) + data
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elif i < 0xFFFF:
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return '\x4D' + struct.pack("<H", i) + data
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else:
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return '\x4e' + struct.pack("<I", i)
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return '\x4E' + struct.pack("<I", i) + data
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def opcode_serialize(opcode):
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# TODO: this function supports just small subset of script for now (enough for most transactions)
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if opcode == 'OP_DUP':
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return '\x76'
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if opcode == 'OP_HASH160':
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return '\xa9'
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if opcode == 'OP_EQUAL':
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return '\x87'
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if opcode == 'OP_EQUALVERIFY':
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return '\x88'
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if opcode == 'OP_CHECKSIG':
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return '\xac'
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mapping = {
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'OP_TRUE' : '\x51',
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'OP_RETURN' : '\x6A',
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'OP_DUP' : '\x76',
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'OP_EQUAL' : '\x87',
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'OP_EQUALVERIFY' : '\x88',
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'OP_RIPEMD160' : '\xA6',
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'OP_SHA1' : '\xA7',
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'OP_SHA256' : '\xA8',
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'OP_HASH160' : '\xA9',
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'OP_HASH256' : '\xAA',
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'OP_CHECKSIG' : '\xAC',
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'OP_CHECKSIGVERIFY' : '\xAD',
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'OP_CHECKMULTISIG' : '\xAE',
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'OP_CHECKMULTISIGVERIFY' : '\xAF',
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}
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# check if it is known opcode
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if mapping.has_key(opcode):
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return mapping[opcode]
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# it's probably hex data
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try:
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x = binascii.unhexlify(opcode)
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return op_push(len(x)) + x
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return op_push_data(x)
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except:
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raise Exception('Unknown script opcode: %s' % opcode)
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