tsimplify validation script - electrum - Electrum Bitcoin wallet
HTML git clone https://git.parazyd.org/electrum
DIR Log
DIR Files
DIR Refs
DIR Submodules
---
DIR commit bb74a6c39340180186421ecd09d6f8fdd7a7d050
DIR parent d57fec265982c8816c4485a321213f400f714094
HTML Author: ThomasV <thomasv@gitorious>
Date: Fri, 19 Oct 2012 21:09:41 +0200
simplify validation script
Diffstat:
M scripts/validate_tx | 33 ++++++++++++-------------------
1 file changed, 13 insertions(+), 20 deletions(-)
---
DIR diff --git a/scripts/validate_tx b/scripts/validate_tx
t@@ -6,23 +6,18 @@ from electrum.bitcoin import Hash, rev_hex, int_to_hex
"""validate a transaction (SPV)"""
-
i = Interface({'server':'ecdsa.org:50002:s'})
i.start()
-
encode = lambda x: x[::-1].encode('hex')
decode = lambda x: x.decode('hex')[::-1]
-def merkle_root(merkle_s, target_hash):
+def do_merkle_root(merkle_s, target_hash):
h = decode(target_hash)
for item in merkle_s:
is_left = item[0] == 'L'
- if is_left:
- h = Hash( h + decode(item[1:]) )
- else:
- h = Hash( decode(item[1:]) + h )
+ h = Hash( h + decode(item[1:]) ) if is_left else Hash( decode(item[1:]) + h )
return encode(h)
t@@ -37,25 +32,23 @@ def hash_header(res):
def verify_tx(tx_hash):
-
res = i.synchronous_get([ ('blockchain.transaction.get_merkle',[tx_hash]) ])[0]
- assert res.get('merkle_root') == merkle_root(res['merkle'], tx_hash)
- block_height = res.get('block_height')
- print block_height
-
+ merkle_root = do_merkle_root(res['merkle'], tx_hash)
+ tx_height = res.get('block_height')
headers_requests = []
- for height in range(block_height-10,block_height+10):
+ for height in range(tx_height-10,tx_height+10):
headers_requests.append( ('blockchain.block.get_header',[height]) )
- res = i.synchronous_get(headers_requests)
-
+ headers = i.synchronous_get(headers_requests)
_hash = None
- for header in res:
+ for header in headers:
if _hash: assert _hash == header.get('prev_block_hash')
_hash = hash_header(header)
- print _hash
- if height==block_height:
- assert header.get('merkle_root') == res.get('merkle_root')
-
+ height = header.get('block_height')
+ if height==tx_height:
+ assert header.get('merkle_root') == merkle_root
+ print height, _hash, '*'
+ else:
+ print height, _hash
try:
tx = sys.argv[1]