linkchecker/linkcheck/checker/telneturl.py
2009-01-08 14:18:03 +00:00

81 lines
2.6 KiB
Python

# -*- coding: iso-8859-1 -*-
# Copyright (C) 2000-2009 Bastian Kleineidam
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
Handle telnet: links.
"""
import telnetlib
import urllib
from . import urlbase
from .. import log, LOG_CHECK
class TelnetUrl (urlbase.UrlBase):
"""
Url link with telnet scheme.
"""
def build_url (self):
"""
Call super.build_url(), set default telnet port and initialize
the login credentials.
"""
super(TelnetUrl, self).build_url()
# default port
if self.port is None:
self.port = 23
# split user/pass
if self.userinfo:
self.user, self.password = urllib.splitpasswd(self.userinfo)
else:
self.user, self.password = self.get_user_password()
def local_check (self):
"""
Warn about empty host names. Else call super.local_check().
"""
if not self.host:
self.set_result(_("Host is empty"), valid=False)
return
super(TelnetUrl, self).local_check()
def check_connection (self):
"""
Open a telnet connection and try to login. Expected login
label is "login: ", expected password label is "Password: ".
"""
self.url_connection = telnetlib.Telnet()
if log.is_debug(LOG_CHECK):
self.url_connection.set_debuglevel(1)
self.url_connection.open(self.host, self.port)
if self.user:
self.url_connection.read_until("login: ", 10)
self.url_connection.write(self.user+"\n")
if self.password:
self.url_connection.read_until("Password: ", 10)
self.url_connection.write(self.password+"\n")
# XXX how to tell if we are logged in??
self.url_connection.write("exit\n")
def can_get_content (self):
"""
Telnet URLs have no content.
@return: False
@rtype: bool
"""
return False