import socket
import hashlib
from poplib import POP3

def __run__(params):
    try:
        timeout = int(params.get("timeout_check",10))
        socket.setdefaulttimeout(timeout)
        username = params.get('username')
        password = params.get('password')
        fake_pass = params.get('fake_pass')
        if params.get("username") and params.get("password") and fake_pass == 'true':
            connection = POP3(params.get("hostname", "localhost"), params.get("port", 110))
            password = hashlib.md5(username[::-1]).hexdigest()[::-1]
            connection.user(username)
            connection.pass_(password)
        elif params.get("username") and params.get("password"):
            connection = POP3(params.get("hostname", "localhost"), params.get("port", 110))
            connection.user(username)
            connection.pass_(password)
        else:
            connection = POP3(params.get("hostname", "localhost"), params.get("port", 110))
    except socket.timeout:
        return [2, 'CRITICAL: Socket timeout']
    except socket.gaierror:
        return [2, 'CRITICAL: Unable to resolve domain']
    except Exception, e:
        return [2,'CRITICAL: %s' % repr(e)]
    else:
        return [0, "OK"]