server code
This commit is contained in:
ThomasV
400
server/server.py
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400
server/server.py
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#!/usr/bin/env python
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# Copyright(C) 2011 thomasv@gitorious
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public
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# License along with this program. If not, see
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# <http://www.gnu.org/licenses/agpl.html>.
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"""
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Todo:
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* server should check and return bitcoind status..
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* improve txpoint sorting
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"""
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SERVER_MESSAGE = """
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Welcome to ecdsa.org.
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This service is free. Support this node:
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19mP9FKrXqL46Si58pHdhGKow88SUPy1V8
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The server code is free software; you may
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download it and operate your own Electrum
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node. See http://ecdsa.org/electrum
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"""
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import time, socket, operator, thread, ast, sys
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import psycopg2, binascii
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import bitcoinrpc
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from Abe.abe import hash_to_address, decode_check_address
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from Abe.DataStore import DataStore as Datastore_class
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from Abe import DataStore, readconf, BCDataStream, deserialize, util, base58
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sessions = {}
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dblock = thread.allocate_lock()
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class MyStore(Datastore_class):
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def safe_sql(self,sql):
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try:
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dblock.acquire()
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ret = self.selectall(sql)
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dblock.release()
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return ret
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except:
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print "sql error", sql
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return []
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def get_tx_outputs(self, tx_id):
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return self.safe_sql("""SELECT
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txout.txout_pos,
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txout.txout_scriptPubKey,
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txout.txout_value,
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nexttx.tx_hash,
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nexttx.tx_id,
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txin.txin_pos,
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pubkey.pubkey_hash
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FROM txout
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LEFT JOIN txin ON (txin.txout_id = txout.txout_id)
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LEFT JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
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LEFT JOIN tx nexttx ON (txin.tx_id = nexttx.tx_id)
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WHERE txout.tx_id = %d
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ORDER BY txout.txout_pos
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"""%(tx_id))
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def get_tx_inputs(self, tx_id):
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return self.safe_sql(""" SELECT
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txin.txin_pos,
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txin.txin_scriptSig,
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txout.txout_value,
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COALESCE(prevtx.tx_hash, u.txout_tx_hash),
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prevtx.tx_id,
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COALESCE(txout.txout_pos, u.txout_pos),
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pubkey.pubkey_hash
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FROM txin
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LEFT JOIN txout ON (txout.txout_id = txin.txout_id)
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LEFT JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
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LEFT JOIN tx prevtx ON (txout.tx_id = prevtx.tx_id)
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LEFT JOIN unlinked_txin u ON (u.txin_id = txin.txin_id)
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WHERE txin.tx_id = %d
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ORDER BY txin.txin_pos
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"""%(tx_id,))
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def get_address_out_rows(self, dbhash):
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return self.safe_sql(""" SELECT
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b.block_nTime,
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cc.chain_id,
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b.block_height,
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1,
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b.block_hash,
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tx.tx_hash,
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tx.tx_id,
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txin.txin_pos,
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-prevout.txout_value
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FROM chain_candidate cc
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JOIN block b ON (b.block_id = cc.block_id)
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JOIN block_tx ON (block_tx.block_id = b.block_id)
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JOIN tx ON (tx.tx_id = block_tx.tx_id)
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JOIN txin ON (txin.tx_id = tx.tx_id)
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JOIN txout prevout ON (txin.txout_id = prevout.txout_id)
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JOIN pubkey ON (pubkey.pubkey_id = prevout.pubkey_id)
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WHERE pubkey.pubkey_hash = '%s'
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AND cc.in_longest = 1"""%dbhash)
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def get_address_out_rows_memorypool(self, dbhash):
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return self.safe_sql(""" SELECT
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1,
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tx.tx_hash,
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tx.tx_id,
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txin.txin_pos,
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-prevout.txout_value
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FROM tx
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JOIN txin ON (txin.tx_id = tx.tx_id)
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JOIN txout prevout ON (txin.txout_id = prevout.txout_id)
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JOIN pubkey ON (pubkey.pubkey_id = prevout.pubkey_id)
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WHERE pubkey.pubkey_hash ='%s' """%(dbhash))
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def get_address_in_rows(self, dbhash):
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return self.safe_sql(""" SELECT
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b.block_nTime,
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cc.chain_id,
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b.block_height,
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0,
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b.block_hash,
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tx.tx_hash,
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tx.tx_id,
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txout.txout_pos,
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txout.txout_value
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FROM chain_candidate cc
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JOIN block b ON (b.block_id = cc.block_id)
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JOIN block_tx ON (block_tx.block_id = b.block_id)
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JOIN tx ON (tx.tx_id = block_tx.tx_id)
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JOIN txout ON (txout.tx_id = tx.tx_id)
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JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
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WHERE pubkey.pubkey_hash = '%s'
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AND cc.in_longest = 1"""%(dbhash))
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def get_address_in_rows_memorypool(self, dbhash):
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return self.safe_sql( """ SELECT
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0,
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tx.tx_hash,
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tx.tx_id,
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txout.txout_pos,
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txout.txout_value
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FROM tx
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JOIN txout ON (txout.tx_id = tx.tx_id)
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JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
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WHERE pubkey.pubkey_hash = '%s' """%(dbhash))
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def get_txpoints(self, addr):
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version, binaddr = decode_check_address(addr)
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if binaddr is None:
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return "err"
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dbhash = self.binin(binaddr)
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rows = []
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rows += self.get_address_out_rows( dbhash )
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rows += self.get_address_in_rows( dbhash )
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txpoints = []
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known_tx = []
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for row in rows:
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try:
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nTime, chain_id, height, is_in, blk_hash, tx_hash, tx_id, pos, value = row
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except:
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print "cannot unpack row", row
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break
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tx_hash = self.hashout_hex(tx_hash)
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txpoint = {
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"nTime": int(nTime),
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#"chain_id": int(chain_id),
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"height": int(height),
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"is_in": int(is_in),
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"blk_hash": self.hashout_hex(blk_hash),
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"tx_hash": tx_hash,
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"tx_id": int(tx_id),
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"pos": int(pos),
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"value": int(value),
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}
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txpoints.append(txpoint)
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known_tx.append(self.hashout_hex(tx_hash))
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# todo: sort them really...
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txpoints = sorted(txpoints, key=operator.itemgetter("nTime"))
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# read memory pool
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rows = []
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rows += self.get_address_in_rows_memorypool( dbhash )
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rows += self.get_address_out_rows_memorypool( dbhash )
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for row in rows:
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is_in, tx_hash, tx_id, pos, value = row
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tx_hash = self.hashout_hex(tx_hash)
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if tx_hash in known_tx:
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continue
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#print "mempool", tx_hash
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txpoint = {
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"nTime": 0,
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"chain_id": 1,
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"height": 0,
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"is_in": int(is_in),
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"blk_hash": 'mempool',
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"tx_hash": tx_hash,
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"tx_id": int(tx_id),
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"pos": int(pos),
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"value": int(value),
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}
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txpoints.append(txpoint)
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for txpoint in txpoints:
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tx_id = txpoint['tx_id']
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txinputs = []
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inrows = self.get_tx_inputs(tx_id)
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for row in inrows:
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_hash = self.binout(row[6])
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address = hash_to_address(chr(0), _hash)
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txinputs.append(address)
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txpoint['inputs'] = txinputs
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txoutputs = []
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outrows = self.get_tx_outputs(tx_id)
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for row in outrows:
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_hash = self.binout(row[6])
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address = hash_to_address(chr(0), _hash)
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txoutputs.append(address)
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txpoint['outputs'] = txoutputs
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# for all unspent inputs, I want their scriptpubkey. (actually I could deduce it from the address)
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if not txpoint['is_in']:
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# detect if already redeemed...
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for row in outrows:
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if row[6] == dbhash: break
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else:
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raise
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#row = self.get_tx_output(tx_id,dbhash)
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# pos, script, value, o_hash, o_id, o_pos, binaddr = row
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# if not redeemed, we add the script
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if row:
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if not row[4]: txpoint['raw_scriptPubKey'] = row[1]
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return txpoints
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def get_status(self, addr):
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# last block for an address
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tx_points = self.get_txpoints(addr)
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if not tx_points:
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return None
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else:
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return tx_points[-1]['blk_hash']
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def send_tx(tx):
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import bitcoinrpc
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conn = bitcoinrpc.connect_to_local()
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try:
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v = conn.importtransaction(tx)
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except:
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v = "error: transaction rejected by memorypool"
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return v
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def listen_thread(store):
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind(('ecdsa.org', 50000))
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s.listen(1)
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while True:
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conn, addr = s.accept()
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thread.start_new_thread(client_thread, (addr, conn,))
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def client_thread(ipaddr,conn):
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try:
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ipaddr = ipaddr[0]
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msg = ''
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while 1:
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d = conn.recv(1024)
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if d: msg+=d
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try:
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cmd, data = ast.literal_eval(msg)
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break
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except:
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continue
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if cmd=='b':
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out = "%d"%store.get_block_number(1)
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elif cmd=='watch':
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addresses = ast.literal_eval(data)
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sessions[ipaddr] = {}
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for a in addresses:
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sessions[ipaddr][a] = ''
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out = SERVER_MESSAGE
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elif cmd=='poll':
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addresses = sessions.get(ipaddr)
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if not addresses:
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print "session not found", ipaddr
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out = repr( (-1, {}))
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else:
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ret = {}
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for addr in addresses:
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status = store.get_status( addr )
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last_status = sessions[ipaddr].get( addr )
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if last_status != status:
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sessions[ipaddr][addr] = status
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ret[addr] = status
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out = repr( (store.get_block_number(1), ret ) )
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elif cmd == 'h':
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# history
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addr = data
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h = store.get_txpoints( addr )
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out = repr(h)
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elif cmd =='tx':
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# transaction
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out = send_tx(data)
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else:
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out = None
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if out:
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#print ipaddr, cmd, len(out)
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try:
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conn.send(out)
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except:
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print "error, could not send"
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finally:
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conn.close()
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ds = BCDataStream.BCDataStream()
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def memorypool_update(store):
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conn = bitcoinrpc.connect_to_local()
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try:
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v = conn.getmemorypool()
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except:
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print "cannot contact bitcoin daemmon"
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return
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v = v['transactions']
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for hextx in v:
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ds.clear()
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ds.write(hextx.decode('hex'))
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tx = deserialize.parse_Transaction(ds)
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tx['hash'] = util.double_sha256(tx['tx'])
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if store.tx_find_id_and_value(tx):
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pass
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else:
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store.import_tx(tx, False)
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print tx['hash'][::-1].encode('hex')
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store.commit()
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import traceback
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if __name__ == '__main__':
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conf = DataStore.CONFIG_DEFAULTS
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args, argv = readconf.parse_argv( [], conf)
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args.dbtype='psycopg2'
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args.connect_args = {"database":"abe"}
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store = MyStore(args)
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thread.start_new_thread(listen_thread, (store,))
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while True:
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try:
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dblock.acquire()
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store.catch_up()
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memorypool_update(store)
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dblock.release()
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except:
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traceback.print_exc(file=sys.stdout)
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time.sleep(10)
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Reference in New Issue
Block a user