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77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
10 years ago
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import binascii
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import urllib2
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import json
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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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class TXAPIBlockchain(object):
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def _raw_tx(self, txhash):
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# Download tx data from blockchain.info
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url = 'http://blockchain.info/rawtx/%s?scripts=true' % txhash
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print "Downloading", url
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f = urllib2.urlopen(url)
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return json.load(f)
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@filecache(MONTH)
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def get_tx(self, txhash):
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# Build protobuf transaction structure from blockchain.info
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d = self._raw_tx(txhash)
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t = proto_types.TransactionType()
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for inp in d['inputs']:
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di = self._raw_tx(inp['prev_out']['tx_index'])
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i = t.inputs.add()
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i.prev_hash = binascii.unhexlify(di['hash'])
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i.prev_index = inp['prev_out']['n']
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i.script_sig = binascii.unhexlify(inp['script'])
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for output in d['out']:
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o = t.outputs.add()
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o.amount = output['value']
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o.script_pubkey = binascii.unhexlify(output['script'])
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t.version = 1
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t.lock_time = 0
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return t
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class TXAPITestnetFake(object):
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def get_tx(self, txhash):
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if txhash != '6f90f3c7cbec2258b0971056ef3fe34128dbde30daa9c0639a898f9977299d54':
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raise Exception("Unexpected hash")
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t = proto_types.TransactionType()
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i = t.inputs.add()
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i.prev_hash = binascii.unhexlify('ee336e79153d51f4f3e45278f1f77ab29fd5bb135dce467282e2aff22cb9c570')
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i.prev_index = 1
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i.script_sig = binascii.unhexlify('483045022066c418874dbe5628296700382d727ce1734928796068c26271472df09dccf1a20221009dec59d19f9d73db381fcd35c0fff757ad73e54ef59157b0d7c57e6739a092f00121033fef08c603943dc7d25f4ce65771762143b1cd8678343d660a1a76b9d1d3ced7')
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i = t.inputs.add()
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i.prev_hash = binascii.unhexlify('2fe4d8af2b44faccc10dd5a6578c923491d2d21269a1dfe8c83f492a30fb8f9f')
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i.prev_index = 1
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i.script_sig = binascii.unhexlify('47304402206fbb8e14be706b8557a2280d2a2a75c0a65c4f7936d90d510f0971c93f41f74402201b79c8c4e4ac4c944913611633c230193558296e70a36269b7fc3a80efa27d120121030cb5be79bdc36a4ff4443dbac43068cc43d638ea06ff2fa1b8dab389e39aefc7')
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o = t.outputs.add()
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o.amount = 403850989
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o.script_pubkey = binascii.unhexlify('76a914f5a05c2664b40d3116b1c5086c9ba38ed15b742e88ac')
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o = t.outputs.add()
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o.amount = 1000000000
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o.script_pubkey = binascii.unhexlify('76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac')
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t.version = 1
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t.lock_time = 0
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return t
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if __name__ == '__main__':
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api = TXAPIBlockchain()
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print api.get_tx('b9f382b8dfc34accc05491712a1ad8f7f075a02056dc4821d1f60702fb3fdb2f')
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