def parse_tx(arg, parser, tx_db, network):
# hex transaction id
tx = None
if TX_ID_RE.match(arg):
if tx_db is None:
tx_db = create_tx_db(network)
tx = tx_db.get(h2b_rev(arg))
if not tx:
parser.error("can't find Tx with id %s" % arg)
return tx, tx_db
# hex transaction data
try:
return Tx.from_hex(arg), tx_db
except Exception:
pass
if os.path.exists(arg):
try:
with open(arg, "rb") as f:
if f.name.endswith("hex"):
f = io.BytesIO(codecs.getreader("hex_codec")(f).read())
tx = Tx.parse(f)
tx.parse_unspents(f)
except Exception:
pass
return tx, tx_db
def tx_for_tx_hash(self, tx_hash):
"""
returns the pycoin.tx object for tx_hash
"""
try:
url_append = "?token=%s&includeHex=true" % self.api_key
url = self.base_url("txs/%s%s" % (b2h_rev(tx_hash), url_append))
result = json.loads(urlopen(url).read().decode("utf8"))
tx = Tx.parse(io.BytesIO(h2b(result.get("hex"))))
return tx
except:
raise Exception
def get(self, key):
for path in self.paths_for_hash(key):
try:
tx = Tx.parse(open(path, "rb"))
if tx and tx.hash() == key:
return tx
except IOError:
pass
for method in self.lookup_methods:
try:
tx = method(key)
if tx and tx.hash() == key:
self.put(tx)
return tx
except Exception:
pass
return None
def test_validate_multisig(self):
# this is a transaction in the block chain
# the unspents are included too, so it can be validated
f = io.BytesIO(
h2b("01000000025718fb915fb8b3a802bb699ddf04dd91261ef6715f5f2820a2b1b9b7e38b"
"4f27000000004a004830450221008c2107ed4e026ab4319a591e8d9ec37719cdea0539"
"51c660566e3a3399428af502202ecd823d5f74a77cc2159d8af2d3ea5d36a702fef9a7"
"edaaf562aef22ac35da401ffffffff038f52231b994efb980382e4d804efeadaee13cf"
"e01abe0d969038ccb45ec17000000000490047304402200487cd787fde9b337ab87f9f"
"e54b9fd46d5d1692aa58e97147a4fe757f6f944202203cbcfb9c0fc4e3c453938bbea9"
"e5ae64030cf7a97fafaf460ea2cb54ed5651b501ffffffff0100093d00000000001976"
"a9144dc39248253538b93d3a0eb122d16882b998145888ac0000000002000000000000"
"004751210351efb6e91a31221652105d032a2508275f374cea63939ad72f1b1e02f477"
"da782100f2b7816db49d55d24df7bdffdbc1e203b424e8cd39f5651ab938e5e4a19356"
"9e52ae404b4c00000000004751210351efb6e91a31221652105d032a2508275f374cea"
"63939ad72f1b1e02f477da7821004f0331742bbc917ba2056a3b8a857ea47ec088dd10"
"475ea311302112c9d24a7152ae"))
tx = Tx.parse(f)
tx.parse_unspents(f)
self.assertEqual(
tx.id(),
"70c4e749f2b8b907875d1483ae43e8a6790b0c8397bbb33682e3602617f9a77a")
self.assertEqual(tx.bad_signature_count(), 0)
def test_recognize_multisig(self):
h = (
"010000000139c92b102879eb95f14e7344e4dd7d481e1238b1bfb1fa0f735068d2927b"
"231400000000910047304402208fc06d216ebb4b6a3a3e0f906e1512c372fa8a9c2a92"
"505d04e9b451ea7acd0c0220764303bb7e514ddd77855949d941c934e9cbda8e3c3827"
"bfdb5777477e73885b014730440220569ec6d2e81625dd18c73920e0079cdb4c1d67d3"
"d7616759eb0c18cf566b3d3402201c60318f0a62e3ba85ca0f158d4dfe63c0779269eb"
"6765b6fc939fc51e7a8ea901ffffffff0140787d01000000001976a914641ad5051edd"
"97029a003fe9efb29359fcee409d88ac0000000040787d0100000000c952410496ec45"
"f878b62c46c4be8e336dff7cc58df9b502178cc240eb3d31b1266f69f5767071aa3e01"
"7d1b82a0bb28dab5e27d4d8e9725b3e68ed5f8a2d45c730621e34104cc71eb30d653c0"
"c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b8"
"7bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4410461cbdcc5409fb4b4d42b51"
"d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8"
"a540911abe3e7854a26f39f58b25c15342af53ae")
f = io.BytesIO(h2b(h))
tx = Tx.parse(f)
tx.parse_unspents(f)
self.assertEqual(
tx.id(),
"10c61e258e0a2b19b245a96a2d0a1538fe81cd4ecd547e0a3df7ed6fd3761ada")
the_script = tx.unspents[0].script
s = script_obj_from_script(tx.unspents[0].script)
self.assertEqual(s.script(), the_script)
def tx_for_tx_hash(self, tx_hash):
"Get a Tx by its hash."
url = self.base_url("get_tx", b2h_rev(tx_hash))
r = json.loads(urlopen(url).read().decode("utf8"))
tx = Tx.parse(io.BytesIO(h2b(r.get("data").get("tx_hex"))))
return tx
def tx_from_b64(h):
f = io.BytesIO(binascii.a2b_base64(h.encode("utf8")))
return Tx.parse(f)