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python-trezor
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insight api: use hex code 

The insight api transaction parser used to look at the assembly to
reconstruct the input and output scripts.  This patch changes it to
use the hex input directly.  This fixes parsing some instructions with
unknown opcodes (e.g. multisig inputs with "0" opcode).
This commit is contained in:
Jochen Hoenicke 2015-05-10 16:05:31 +02:00
parent bf539f0b47
commit 337fe029fd
1 changed files with 2 additions and 44 deletions
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46
trezorlib/tx_api.py
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@ -5,44 +5,6 @@ from decimal import Decimal
from filecache import filecache, DAY
import types_pb2 as proto_types
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) + data
def opcode_serialize(opcode):
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_data(x)
except:
raise Exception('Unknown script opcode: %s' % opcode)
def insight_tx(url, rawdata=False):
if not rawdata:
try:
@ -68,17 +30,13 @@ def insight_tx(url, rawdata=False):
else:
i.prev_hash = binascii.unhexlify(vin['txid'])
i.prev_index = vin['vout']
asm = vin['scriptSig']['asm'].split(' ')
asm = [ opcode_serialize(x) for x in asm ]
i.script_sig = ''.join(asm)
i.script_sig = binascii.unhexlify(vin['scriptSig']['hex'])
i.sequence = vin['sequence']
for vout in data['vout']:
o = t.bin_outputs.add()
o.amount = int(Decimal(str(vout['value'])) * 100000000)
asm = vout['scriptPubKey']['asm'].split(' ')
asm = [ opcode_serialize(x) for x in asm ]
o.script_pubkey = ''.join(asm)
o.script_pubkey = binascii.unhexlify(vout['scriptPubKey']['hex'])
return t