ipsilon/login/authpam.py

   1 #!/usr/bin/python
   2 #
   3 # Copyright (C) 2013  Simo Sorce <simo@redhat.com>
   4 #
   5 # see file 'COPYING' for use and warranty information
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 from ipsilon.login.common import LoginPageBase, LoginManagerBase
  21 import cherrypy
  22 import pam
  23
  24
  25 class Pam(LoginPageBase):
  26
  27     def _authenticate(self, username, password):
  28         if self.lm.service_name:
  29             ok = pam.authenticate(username, password, self.lm.service_name)
  30         else:
  31             ok = pam.authenticate(username, password)
  32
  33         if ok:
  34             cherrypy.log("User %s successfully authenticated." % username)
  35             return username
  36
  37         cherrypy.log("User %s failed authentication." % username)
  38         return None
  39
  40     def GET(self, *args, **kwargs):
  41         return self._template('login/pam.html', title='Login',
  42                               action='%s/login/pam' % self.basepath,
  43                               service_name=self.lm.service_name,
  44                               help_text=self.lm.help_text,
  45                               username_text=self.lm.username_text,
  46                               password_text=self.lm.password_text)
  47
  48     def POST(self, *args, **kwargs):
  49         username = None
  50         password = None
  51         user = None
  52         for key, value in kwargs.iteritems():
  53             if key == 'login_name':
  54                 username = value
  55             elif key == 'login_password':
  56                 password = value
  57         if username is not None and password is not None:
  58             user = self._authenticate(username, password)
  59         else:
  60             cherrypy.log.error("Error: Username or password is missing")
  61
  62         if user:
  63             return self.lm.auth_successful(user)
  64         else:
  65             return self.lm.auth_failed()
  66
  67     def root(self, *args, **kwargs):
  68         op = getattr(self, cherrypy.request.method, self.GET)
  69         if callable(op):
  70             return op(*args, **kwargs)
  71
  72
  73 class LoginManager(LoginManagerBase):
  74
  75     def __init__(self, *args, **kwargs):
  76         super(LoginManager, self).__init__(*args, **kwargs)
  77         self.name = 'pam'
  78         self.path = 'pam'
  79         self.page = None
  80         self.description = """
  81 Form based login Manager that uses the system's PAM infrastructure
  82 for authentication. """
  83         self._options = {
  84             'service name': [
  85                 """ The name of the PAM service used to authenticate. """,
  86                 'string',
  87                 'remote'
  88             ],
  89             'help text': [
  90                 """ The text shown to guide the user at login time. """,
  91                 'string',
  92                 'Insert your Username and Password and then submit.'
  93             ],
  94             'username text': [
  95                 """ The text shown to ask for the username in the form. """,
  96                 'string',
  97                 'Username'
  98             ],
  99             'password text': [
 100                 """ The text shown to ask for the password in the form. """,
 101                 'string',
 102                 'Password'
 103             ],
 104         }
 105
 106     @property
 107     def service_name(self):
 108         return self.get_config_value('service name')
 109
 110     @property
 111     def help_text(self):
 112         return self.get_config_value('help text')
 113
 114     @property
 115     def username_text(self):
 116         return self.get_config_value('username text')
 117
 118     @property
 119     def password_text(self):
 120         return self.get_config_value('password text')
 121
 122     def get_tree(self, site):
 123         self.page = Pam(site, self)
 124         return self.page