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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-17 11:58:13 +00:00
trezor-firmware/trezorlib/tx_api.py
2016-05-20 16:09:14 +02:00

101 lines
2.9 KiB
Python

import binascii
import json
from decimal import Decimal
# from filecache import filecache, DAY
from . import types_pb2 as proto_types
import requests
def insight_tx(url, rawdata=False):
if not rawdata:
try:
r = requests.get(url, headers = {'User-agent': 'Mozilla/5.0'})
data = r.json()
except:
raise Exception('URL error: %s' % url)
else:
data = url
t = proto_types.TransactionType()
t.version = data['version']
t.lock_time = data['locktime']
for vin in data['vin']:
i = t.inputs.add()
if 'coinbase' in vin.keys():
i.prev_hash = "\0"*32
i.prev_index = 0xffffffff # signed int -1
i.script_sig = binascii.unhexlify(vin['coinbase'])
i.sequence = vin['sequence']
else:
i.prev_hash = binascii.unhexlify(vin['txid'])
i.prev_index = vin['vout']
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)
o.script_pubkey = binascii.unhexlify(vout['scriptPubKey']['hex'])
return t
def smartbit_tx(url, rawdata=False):
if not rawdata:
try:
r = requests.get(url, headers = {'User-agent': 'Mozilla/5.0'})
data = r.json()
except:
raise Exception('URL error: %s' % url)
else:
data = url
data = data['transaction']
t = proto_types.TransactionType()
t.version = int(data['version'])
t.lock_time = data['locktime']
for vin in data['inputs']:
i = t.inputs.add()
if 'coinbase' in vin.keys():
i.prev_hash = "\0"*32
i.prev_index = 0xffffffff # signed int -1
i.script_sig = binascii.unhexlify(vin['coinbase'])
i.sequence = vin['sequence']
else:
i.prev_hash = binascii.unhexlify(vin['txid'])
i.prev_index = vin['vout']
i.script_sig = binascii.unhexlify(vin['script_sig']['hex'])
i.sequence = vin['sequence']
for vout in data['outputs']:
o = t.bin_outputs.add()
o.amount = int(Decimal(vout['value']) * 100000000)
o.script_pubkey = binascii.unhexlify(vout['script_pub_key']['hex'])
return t
class TXAPIBitcoin(object):
# @filecache(DAY)
def get_tx(self, txhash):
url = 'https://insight.bitpay.com/api/tx/%s' % txhash
return insight_tx(url)
class TXAPITestnet(object):
# @filecache(DAY)
def get_tx(self, txhash):
url = 'https://test-insight.bitpay.com/api/tx/%s' % txhash
return insight_tx(url)
class TXAPISegnet(object):
# @filecache(DAY)
def get_tx(self, txhash):
url = 'https://segnet-api.smartbit.com.au/v1/blockchain/tx/%s' % txhash
return smartbit_tx(url)