tparse_scriptSig - electrum - Electrum Bitcoin wallet
HTML git clone https://git.parazyd.org/electrum
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---
DIR commit 52e74ccda12eb21397770e58631f294a8a3339c2
DIR parent c07c1c58ed1f753f02a55039f3ef65157d680964
HTML Author: ThomasV <thomasv@gitorious>
Date: Tue, 17 Jun 2014 13:48:58 +0200
parse_scriptSig
Diffstat:
M lib/transaction.py | 53 +++++++++++++++----------------
1 file changed, 25 insertions(+), 28 deletions(-)
---
DIR diff --git a/lib/transaction.py b/lib/transaction.py
t@@ -295,18 +295,18 @@ def match_decoded(decoded, to_match):
return False
return True
-def get_address_from_input_script(bytes):
+def parse_scriptSig(d, bytes):
try:
decoded = [ x for x in script_GetOp(bytes) ]
except Exception:
# coinbase transactions raise an exception
print_error("cannot find address in input script", bytes.encode('hex'))
- return [], {}, "(None)"
+ return
# payto_pubkey
match = [ opcodes.OP_PUSHDATA4 ]
if match_decoded(decoded, match):
- return None, {}, "(pubkey)"
+ return
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
t@@ -317,11 +317,13 @@ def get_address_from_input_script(bytes):
pubkey = decoded[1][1].encode('hex')
if sig[-2:] == '01':
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:
print_error("cannot find address in input script", bytes.encode('hex'))
- return [], {}, "(None)"
-
+ return
# p2sh transaction, 2 of n
match = [ opcodes.OP_0 ]
t@@ -329,27 +331,25 @@ def get_address_from_input_script(bytes):
match.append(opcodes.OP_PUSHDATA4)
if match_decoded(decoded, match):
-
redeemScript = decoded[-1][1]
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) ]
-
- # 2 of 2
- match2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ]
- if match_decoded(dec2, match2):
+ match_2of2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ]
+ match_2of3 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
+ if match_decoded(dec2, match_2of2):
pubkeys = [ dec2[1][1].encode('hex'), dec2[2][1].encode('hex') ]
- return pubkeys, signatures, hash_160_to_bc_address(hash_160(redeemScript), 5)
-
- # 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):
+ elif match_decoded(dec2, match_2of3):
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'))
- return [], {}, "(None)"
+
t@@ -626,15 +626,12 @@ class Transaction:
d['prevout_hash'] = prevout_hash
d['prevout_n'] = prevout_n
d['sequence'] = sequence
+
+ d['pubkeys'] = []
+ d['signatures'] = {}
+ d['address'] = None
if scriptSig:
- pubkeys, signatures, address = get_address_from_input_script(scriptSig)
- else:
- pubkeys = []
- signatures = {}
- address = None
- d['address'] = address
- d['pubkeys'] = pubkeys
- d['signatures'] = signatures
+ parse_scriptSig(d, scriptSig)
return d