#!/usr/bin/env python # # Electrum - lightweight Bitcoin client # Copyright (C) 2011 thomasv@gitorious # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . import time, thread, sys, socket, os import urllib2,json import Queue import sqlite3 from electrum import Wallet, WalletStorage, SimpleConfig, Network, set_verbosity set_verbosity(False) import ConfigParser config = ConfigParser.ConfigParser() config.read("merchant.conf") my_password = config.get('main','password') my_host = config.get('main','host') my_port = config.getint('main','port') database = config.get('sqlite3','database') received_url = config.get('callback','received') expired_url = config.get('callback','expired') cb_password = config.get('callback','password') wallet_path = config.get('electrum','wallet_path') master_public_key = config.get('electrum','mpk') master_chain = config.get('electrum','chain') pending_requests = {} num = 0 def check_create_table(conn): global num c = conn.cursor() c.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='electrum_payments';") data = c.fetchall() if not data: c.execute("""CREATE TABLE electrum_payments (address VARCHAR(40), amount FLOAT, confirmations INT(8), received_at TIMESTAMP, expires_at TIMESTAMP, paid INT(1), processed INT(1));""") conn.commit() c.execute("SELECT Count(address) FROM 'electrum_payments'") num = c.fetchone()[0] print "num rows", num # this process detects when addresses have received payments def on_wallet_update(): for addr, v in pending_requests.items(): h = wallet.history.get(addr, []) requested_amount = v.get('requested') requested_confs = v.get('confirmations') value = 0 for tx_hash, tx_height in h: tx = wallet.transactions.get(tx_hash) if not tx: continue if wallet.verifier.get_confirmations(tx_hash) < requested_confs: continue for o in tx.outputs: o_address, o_value = o if o_address == addr: value += o_value s = (value)/1.e8 print "balance for %s:"%addr, s, requested_amount if s>= requested_amount: print "payment accepted", addr out_queue.put( ('payment', addr)) stopping = False def do_stop(password): global stopping if password != my_password: return "wrong password" stopping = True return "ok" def process_request(amount, confirmations, expires_in, password): global num if password != my_password: return "wrong password" try: amount = float(amount) confirmations = int(confirmations) expires_in = float(expires_in) except Exception: return "incorrect parameters" account = wallet.accounts["m/0'/0"] addr = account.get_address(0, num) num += 1 out_queue.put( ('request', (addr, amount, confirmations, expires_in) )) return addr def server_thread(conn): from jsonrpclib.SimpleJSONRPCServer import SimpleJSONRPCServer server = SimpleJSONRPCServer(( my_host, my_port)) server.register_function(process_request, 'request') server.register_function(do_stop, 'stop') server.serve_forever() def send_command(cmd, params): import jsonrpclib server = jsonrpclib.Server('http://%s:%d'%(my_host, my_port)) try: if cmd == 'request': out = server.request(*params) elif cmd == 'stop': out = server.stop(*params) else: out = "unknown command" except socket.error: print "Server not running" return 1 print out return 0 if __name__ == '__main__': if len(sys.argv) > 1: cmd = sys.argv[1] params = sys.argv[2:] + [my_password] ret = send_command(cmd, params) sys.exit(ret) conn = sqlite3.connect(database); # create table if needed check_create_table(conn) # init network config = SimpleConfig({'wallet_path':wallet_path}) network = Network(config) network.start(wait=True) # create watching_only wallet storage = WalletStorage(config) wallet = Wallet(storage) if not storage.file_exists: wallet.seed = '' wallet.create_watching_only_wallet(master_public_key,master_chain) wallet.synchronize = lambda: None # prevent address creation by the wallet wallet.start_threads(network) network.register_callback('updated', on_wallet_update) out_queue = Queue.Queue() thread.start_new_thread(server_thread, (conn,)) while not stopping: cur = conn.cursor() # read pending requests from table cur.execute("SELECT address, amount, confirmations FROM electrum_payments WHERE paid IS NULL;") data = cur.fetchall() # add pending requests to the wallet for item in data: addr, amount, confirmations = item if addr in pending_requests: continue else: with wallet.lock: print "subscribing to %s"%addr pending_requests[addr] = {'requested':float(amount), 'confirmations':int(confirmations)} wallet.synchronizer.subscribe_to_addresses([addr]) wallet.up_to_date = False try: cmd, params = out_queue.get(True, 10) except Queue.Empty: cmd = '' if cmd == 'payment': addr = params # set paid=1 for received payments print "received payment from", addr cur.execute("update electrum_payments set paid=1 where address='%s'"%addr) elif cmd == 'request': # add a new request to the table. addr, amount, confs, minutes = params sql = "INSERT INTO electrum_payments (address, amount, confirmations, received_at, expires_at, paid, processed)"\ + " VALUES ('%s', %f, %d, datetime('now'), datetime('now', '+%d Minutes'), NULL, NULL);"%(addr, amount, confs, minutes) print sql cur.execute(sql) # set paid=0 for expired requests cur.execute("""UPDATE electrum_payments set paid=0 WHERE expires_at < CURRENT_TIMESTAMP and paid is NULL;""") # do callback for addresses that received payment or expired cur.execute("""SELECT oid, address, paid from electrum_payments WHERE paid is not NULL and processed is NULL;""") data = cur.fetchall() for item in data: oid, address, paid = item paid = bool(paid) headers = {'content-type':'application/json'} data_json = { 'address':address, 'password':cb_password, 'paid':paid } data_json = json.dumps(data_json) url = received_url if paid else expired_url req = urllib2.Request(url, data_json, headers) try: response_stream = urllib2.urlopen(req) print 'Got Response for %s' % address cur.execute("UPDATE electrum_payments SET processed=1 WHERE oid=%d;"%(oid)) except urllib2.HTTPError: print "cannot do callback", data_json except ValueError, e: print e print "cannot do callback", data_json conn.commit() conn.close() print "Done"