mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-15 20:19:23 +00:00
100 lines
2.8 KiB
Python
100 lines
2.8 KiB
Python
import binascii
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import urllib2
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import json
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from decimal import Decimal
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try:
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from filecache import filecache, MONTH
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except:
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def filecache(x):
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def _inner(y):
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return y
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return _inner
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MONTH = None
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import types_pb2 as proto_types
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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) + data
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def opcode_serialize(opcode):
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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_data(x)
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except:
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raise Exception('Unknown script opcode: %s' % opcode)
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def bitcore_tx(url):
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f = urllib2.urlopen(url)
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data = json.load(f)
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t = proto_types.TransactionType()
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t.version = data['version']
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t.lock_time = data['locktime']
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for vin in data['vin']:
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i = t.inputs.add()
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if 'coinbase' in vin.keys():
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i.prev_hash = "\0"*32
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i.prev_index = 0xffffffff # signed int -1
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i.script_sig = binascii.unhexlify(vin['coinbase'])
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i.sequence = vin['sequence']
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else:
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i.prev_hash = binascii.unhexlify(vin['txid'])
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i.prev_index = vin['vout']
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asm = vin['scriptSig']['asm'].split(' ')
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asm = [ opcode_serialize(x) for x in asm ]
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i.script_sig = ''.join(asm)
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i.sequence = vin['sequence']
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for vout in data['vout']:
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o = t.bin_outputs.add()
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o.amount = int(Decimal(vout['value']) * 100000000)
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asm = vout['scriptPubKey']['asm'].split(' ')
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asm = [ opcode_serialize(x) for x in asm ]
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o.script_pubkey = ''.join(asm)
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return t
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class TXAPIBitcoin(object):
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@filecache(MONTH)
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def get_tx(self, txhash):
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url = 'http://live.bitcore.io/api/tx/%s' % txhash
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return bitcore_tx(url)
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class TXAPITestnet(object):
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@filecache(MONTH)
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def get_tx(self, txhash):
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url = 'http://test.bitcore.io/api/tx/%s' % txhash
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return bitcore_tx(url)
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