AaronFiore/electrum
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simplify validation script

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This commit is contained in:
ThomasV
2012-10-19 21:09:41 +02:00
parent d57fec2659
commit bb74a6c393
1 changed files with 13 additions and 20 deletions
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33
scripts/validate_tx
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@@ -6,23 +6,18 @@ from electrum.bitcoin import Hash, rev_hex, int_to_hex
"""validate a transaction (SPV)""" """validate a transaction (SPV)"""
i = Interface({'server':'ecdsa.org:50002:s'}) i = Interface({'server':'ecdsa.org:50002:s'})
i.start() i.start()
encode = lambda x: x[::-1].encode('hex') encode = lambda x: x[::-1].encode('hex')
decode = lambda x: x.decode('hex')[::-1] 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) h = decode(target_hash)
for item in merkle_s: for item in merkle_s:
is_left = item[0] == 'L' is_left = item[0] == 'L'
if is_left: h = Hash( h + decode(item[1:]) ) if is_left else Hash( decode(item[1:]) + h )
h = Hash( h + decode(item[1:]) )
else:
h = Hash( decode(item[1:]) + h )
return encode(h) return encode(h)
@@ -37,25 +32,23 @@ def hash_header(res):
def verify_tx(tx_hash): def verify_tx(tx_hash):
res = i.synchronous_get([ ('blockchain.transaction.get_merkle',[tx_hash]) ])[0] res = i.synchronous_get([ ('blockchain.transaction.get_merkle',[tx_hash]) ])[0]
assert res.get('merkle_root') == merkle_root(res['merkle'], tx_hash) merkle_root = do_merkle_root(res['merkle'], tx_hash)
block_height = res.get('block_height') tx_height = res.get('block_height')
print block_height
headers_requests = [] 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]) ) headers_requests.append( ('blockchain.block.get_header',[height]) )
res = i.synchronous_get(headers_requests) headers = i.synchronous_get(headers_requests)
_hash = None _hash = None
for header in res: for header in headers:
if _hash: assert _hash == header.get('prev_block_hash') if _hash: assert _hash == header.get('prev_block_hash')
_hash = hash_header(header) _hash = hash_header(header)
print _hash height = header.get('block_height')
if height==block_height: if height==tx_height:
assert header.get('merkle_root') == res.get('merkle_root') assert header.get('merkle_root') == merkle_root
print height, _hash, '*'
else:
print height, _hash
try: try:
tx = sys.argv[1] tx = sys.argv[1]