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Code Issues Releases Wiki Activity

make txapi class more universal

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This commit is contained in:
Pavol Rusnak 2014-04-02 19:31:47 +02:00
parent c3f74420a4
commit 60df691bb2
1 changed files with 29 additions and 20 deletions
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49
trezorlib/tx_api.py
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@ -12,32 +12,41 @@ except:
import types_pb2 as proto_types
def op_push(i):
if i<0x4c:
return chr(i)
elif i<0xff:
return '\x4c' + chr(i)
elif i<0xffff:
return '\x4d' + struct.pack("<H", i)
def op_push_data(data):
l = len(data)
if l < 0x4C:
return chr(l) + data
elif i < 0xFF:
return '\x4C' + chr(l) + data
elif i < 0xFFFF:
return '\x4D' + struct.pack("<H", i) + data
else:
return '\x4e' + struct.pack("<I", i)
return '\x4E' + struct.pack("<I", i) + data
def opcode_serialize(opcode):
# TODO: this function supports just small subset of script for now (enough for most transactions)
if opcode == 'OP_DUP':
return '\x76'
if opcode == 'OP_HASH160':
return '\xa9'
if opcode == 'OP_EQUAL':
return '\x87'
if opcode == 'OP_EQUALVERIFY':
return '\x88'
if opcode == 'OP_CHECKSIG':
return '\xac'
mapping = {
'OP_TRUE' : '\x51',
'OP_RETURN' : '\x6A',
'OP_DUP' : '\x76',
'OP_EQUAL' : '\x87',
'OP_EQUALVERIFY' : '\x88',
'OP_RIPEMD160' : '\xA6',
'OP_SHA1' : '\xA7',
'OP_SHA256' : '\xA8',
'OP_HASH160' : '\xA9',
'OP_HASH256' : '\xAA',
'OP_CHECKSIG' : '\xAC',
'OP_CHECKSIGVERIFY' : '\xAD',
'OP_CHECKMULTISIG' : '\xAE',
'OP_CHECKMULTISIGVERIFY' : '\xAF',
}
# check if it is known opcode
if mapping.has_key(opcode):
return mapping[opcode]
# it's probably hex data
try:
x = binascii.unhexlify(opcode)
return op_push(len(x)) + x
return op_push_data(x)
except:
raise Exception('Unknown script opcode: %s' % opcode)