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parse_scriptSig

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This commit is contained in:
ThomasV
2014-06-17 13:48:58 +02:00
parent c07c1c58ed
commit 52e74ccda1
1 changed files with 25 additions and 28 deletions
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53
lib/transaction.py
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@@ -295,18 +295,18 @@ def match_decoded(decoded, to_match):
return False return False
return True return True
def get_address_from_input_script(bytes): def parse_scriptSig(d, bytes):
try: try:
decoded = [ x for x in script_GetOp(bytes) ] decoded = [ x for x in script_GetOp(bytes) ]
except Exception: except Exception:
# coinbase transactions raise an exception # coinbase transactions raise an exception
print_error("cannot find address in input script", bytes.encode('hex')) print_error("cannot find address in input script", bytes.encode('hex'))
return [], {}, "(None)" return
# payto_pubkey # payto_pubkey
match = [ opcodes.OP_PUSHDATA4 ] match = [ opcodes.OP_PUSHDATA4 ]
if match_decoded(decoded, match): if match_decoded(decoded, match):
return None, {}, "(pubkey)" return
# non-generated TxIn transactions push a signature # non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key # (seventy-something bytes) and then their public key
@@ -317,11 +317,13 @@ def get_address_from_input_script(bytes):
pubkey = decoded[1][1].encode('hex') pubkey = decoded[1][1].encode('hex')
if sig[-2:] == '01': if sig[-2:] == '01':
sig = sig[:-2] sig = sig[:-2]
return [pubkey], {pubkey:sig}, public_key_to_bc_address(pubkey.decode('hex')) d['pubkeys'] = [pubkey]
d['signatures'] = {pubkey:sig}
d['address'] = public_key_to_bc_address(pubkey.decode('hex'))
return
else: else:
print_error("cannot find address in input script", bytes.encode('hex')) print_error("cannot find address in input script", bytes.encode('hex'))
return [], {}, "(None)" return
# p2sh transaction, 2 of n # p2sh transaction, 2 of n
match = [ opcodes.OP_0 ] match = [ opcodes.OP_0 ]
@@ -329,27 +331,25 @@ def get_address_from_input_script(bytes):
match.append(opcodes.OP_PUSHDATA4) match.append(opcodes.OP_PUSHDATA4)
if match_decoded(decoded, match): if match_decoded(decoded, match):
redeemScript = decoded[-1][1] redeemScript = decoded[-1][1]
num = len(match) - 2 num = len(match) - 2
signatures = map(lambda x:x[1][:-1].encode('hex'), decoded[1:-1]) d['signatures'] = map(lambda x:x[1][:-1].encode('hex'), decoded[1:-1])
d['address'] = hash_160_to_bc_address(hash_160(redeemScript), 5)
d['redeemScript'] = redeemScript.encode('hex')
dec2 = [ x for x in script_GetOp(redeemScript) ] dec2 = [ x for x in script_GetOp(redeemScript) ]
match_2of2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ]
# 2 of 2 match_2of3 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
match2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ] if match_decoded(dec2, match_2of2):
if match_decoded(dec2, match2):
pubkeys = [ dec2[1][1].encode('hex'), dec2[2][1].encode('hex') ] pubkeys = [ dec2[1][1].encode('hex'), dec2[2][1].encode('hex') ]
return pubkeys, signatures, hash_160_to_bc_address(hash_160(redeemScript), 5) elif match_decoded(dec2, match_2of3):
# 2 of 3
match2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
if match_decoded(dec2, match2):
pubkeys = [ dec2[1][1].encode('hex'), dec2[2][1].encode('hex'), dec2[3][1].encode('hex') ] pubkeys = [ dec2[1][1].encode('hex'), dec2[2][1].encode('hex'), dec2[3][1].encode('hex') ]
return pubkeys, signatures, hash_160_to_bc_address(hash_160(redeemScript), 5) else:
return
d['pubkeys'] = pubkeys
return
print_error("cannot find address in input script", bytes.encode('hex')) print_error("cannot find address in input script", bytes.encode('hex'))
return [], {}, "(None)"
@@ -626,15 +626,12 @@ class Transaction:
d['prevout_hash'] = prevout_hash d['prevout_hash'] = prevout_hash
d['prevout_n'] = prevout_n d['prevout_n'] = prevout_n
d['sequence'] = sequence d['sequence'] = sequence
d['pubkeys'] = []
d['signatures'] = {}
d['address'] = None
if scriptSig: if scriptSig:
pubkeys, signatures, address = get_address_from_input_script(scriptSig) parse_scriptSig(d, scriptSig)
else:
pubkeys = []
signatures = {}
address = None
d['address'] = address
d['pubkeys'] = pubkeys
d['signatures'] = signatures
return d return d