Ajout d'une authentification MySQL pour ejabberd.

[progfou.git] / ejabberd / auth-mysql.py

#!/usr/bin/env python
# -*- coding: UTF-8 -*-
# Depends: python-mysqldb
import sys
import traceback
import struct
import time
import MySQLdb
import crypt

# TODO: transformer toute la partie gestion de BdD en une classe
# TODO: connexion persistente et gérer les coupures de service MySQL

_host = 'nss'
_user = 'jabber'
_passwd = 'password'
_db = 'auth'

def find_user(user):
    global _host, _user, _passwd, _db
    db = MySQLdb.connect(host=_host, user=_user, passwd=_passwd,
                         db=_db, connect_timeout=1)
    cur = db.cursor(MySQLdb.cursors.DictCursor)
    nrows = cur.execute(
        """SELECT uid FROM users WHERE source=0 AND username=%s""", (user, ))
    del cur, db
    return (nrows > 0)

def authenticate_user(user, password):
    global _host, _user, _passwd, _db
    db = MySQLdb.connect(host=_host, user=_user, passwd=_passwd,
                         db=_db, connect_timeout=1)
    cur = db.cursor(MySQLdb.cursors.DictCursor)
    nrows = cur.execute(
        """SELECT password FROM users WHERE source=0 AND username=%s"""
        """ AND LENGTH(password)>1""", (user, ))
    users = cur.fetchall()
    del cur, db
    if nrows < 1:
        return False
    for user in users:
        if crypt.crypt(password, user['password']) == user['password']:
            return True
    return False

def main():
    log_file = open('/var/log/ejabberd/auth-mysql.log', 'a')
    while True:
        try:
            nread = sys.stdin.read(2)
            if len(nread) == 0:
                time.sleep(0.25)
                continue
            now = time.strftime('%Y/%m/%d %H:%M:%S', time.localtime())
            if len(nread) < 2:
                log_file.write('%s bytes_read=%d\n' % (now, len(nread)))
                log_file.flush()
                continue
            size = struct.unpack('>h', nread)[0]
            data = sys.stdin.read(size)
            (operation, data) = data.split(':', 1)
            if operation == 'auth':
                (user, host, password) = data.split(':', 2)
                log_file.write('%s operation=%s user=%s host=%s\n'
                               % (now, operation, user, host))
                log_file.flush()
                result = authenticate_user(user, password)
            elif operation == 'isuser':
                (user, host) = data.split(':', 1)
                log_file.write('%s operation=%s user=%s host=%s\n'
                               % (now, operation, user, host))
                log_file.flush()
                result = find_user(user)
            elif operation == 'setpass':
                (user, host, password) = data.split(':', 2)
                log_file.write('%s operation=%s user=%s host=%s\n'
                               % (now, operation, user, host))
                log_file.flush()
                #result = set_user_password(user, password)
                result = False
            else:
                result = False
            log_file.write('%s => result=%s\n' % (now, result))
            log_file.flush()
            sys.stdout.write(struct.pack('>hh', 2, result and 1 or 0))
            sys.stdout.flush()
        except:
            traceback.print_exc(file=log_file)
        #sys.exit()

if __name__ == '__main__':
    main()