tImplement blockchain.transaction.get_merkle - obelisk - Electrum server using libbitcoin as its backend
HTML git clone https://git.parazyd.org/obelisk
DIR Log
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---
DIR commit 41f60ddbf3c1206d910918959361957948d2bcc3
DIR parent 183262b72ecf87b10446f75068cb4b5f4668108e
HTML Author: parazyd <parazyd@dyne.org>
Date: Wed, 7 Apr 2021 19:39:29 +0200
Implement blockchain.transaction.get_merkle
Diffstat:
M electrumobelisk/protocol.py | 30 ++++++++++++++++++++++++++++--
1 file changed, 28 insertions(+), 2 deletions(-)
---
DIR diff --git a/electrumobelisk/protocol.py b/electrumobelisk/protocol.py
t@@ -16,6 +16,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import asyncio
import json
+from binascii import unhexlify
from electrumobelisk.merkle import merkle_branch
from electrumobelisk.util import (
t@@ -239,7 +240,32 @@ class ElectrumProtocol(asyncio.Protocol): # pylint: disable=R0904,R0902
return
async def blockchain_transaction_get_merkle(self, query):
- return
+ if "params" not in query or len(query["params"]) != 2:
+ return {"error": "malformed request"}
+ tx_hash = query["params"][0]
+ height = query["params"][1]
+
+ if not is_hash256_str(tx_hash):
+ return {"error": "tx_hash is not a txid"}
+ if not is_non_negative_integer(height):
+ return {"error": "height is not a block height"}
+
+ _ec, hashes = await self.bx.fetch_block_transaction_hashes(height)
+ if _ec and _ec != 0:
+ self.log.debug("Got error: %s", repr(_ec))
+ return {"error": "request corrupted"}
+
+ # Decouple from tuples
+ hashes = [i[0] for i in hashes]
+ tx_pos = hashes.index(unhexlify(tx_hash)[::-1])
+ branch = merkle_branch(hashes, tx_pos)
+
+ res = {
+ "block_height": int(height),
+ "pos": int(tx_pos),
+ "merkle": branch,
+ }
+ return {"result": res}
async def blockchain_transaction_from_pos(self, query): # pylint: disable=R0911
if "params" not in query or len(query["params"]) < 2:
t@@ -264,7 +290,7 @@ class ElectrumProtocol(asyncio.Protocol): # pylint: disable=R0904,R0902
return {"error": "index not in block"}
# Decouple from tuples
- hashes = [i[0] for i in hashes]
+ hashes = [i[0] for i in hashes]
txid = safe_hexlify(hashes[tx_pos][::-1])
if not merkle: