Replace passwords in Yate

pass.py

#!/usr/bin/env python

import asyncore
from libyate import Yate


def replace_passwords(params):
    passwords = {
        # 'user': 'pass'
    }
    user_n, pass_n = None, None
    for n, pair in enumerate(params):
        if pair[0] == 'username':
            user_n = n
        elif pair[0] == 'password':
            pass_n = n
    if user_n is not None and pass_n is not None:
        username = params[user_n][1].lower()
        if username in passwords:
            params[pass_n][1] = passwords[username]


class YateApp:
    def __init__(self):
        self.app = Yate()
        self.app.__Yatecall__ = self.retenv
        self.app.si.connected = True  # due to bug in libyate.py

    def retenv(self, d):
        if d == "incoming":
            replace_passwords(self.app.params)
            self.app.Acknowledge()

    def main(self):
        self.app.Install("user.login")
        asyncore.loop()
        self.app.Uninstall("user.login")
        self.app.close()


if __name__ == '__main__':
    a = YateApp()
    a.main()