1 # Copyright (C) 2014 Simo Sorce <simo@redhat.com>
3 # see file 'COPYING' for use and warranty information
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 from ipsilon.login.common import LoginPageBase, LoginManagerBase, \
20 from ipsilon.util.plugin import PluginObject
21 from ipsilon.util.user import UserSession
22 from string import Template
27 class Krb(LoginPageBase):
29 def root(self, *args, **kwargs):
30 # Someone typed manually or a robot is walking th tree.
31 # Redirect to default page
32 return self.lm.redirect_to_path(self.lm.path)
35 class KrbAuth(LoginPageBase):
37 def root(self, *args, **kwargs):
38 trans = self.get_valid_transaction('login', **kwargs)
39 # If we can get here, we must be authenticated and remote_user
40 # was set. Check the session has a user set already or error.
43 self.user = us.get_user()
44 if not self.user.is_anonymous:
45 principal = cherrypy.request.wsgi_environ.get('GSS_NAME', None)
47 userdata = {'krb_principal_name': principal}
49 userdata = {'krb_principal_name': self.user.name}
50 return self.lm.auth_successful(trans, self.user.name,
53 return self.lm.auth_failed(trans)
56 class KrbError(LoginPageBase):
58 def root(self, *args, **kwargs):
59 cherrypy.log.error('REQUEST: %s' % cherrypy.request.headers)
60 # If we have no negotiate header return whatever mod_auth_gssapi
61 # generated and wait for the next request
63 if 'WWW-Authenticate' not in cherrypy.request.headers:
64 cherrypy.response.status = 401
66 next_login = self.lm.next_login()
68 return next_login.page.root(*args, **kwargs)
70 conturl = '%s/login' % self.basepath
71 return self._template('login/krb.html',
72 title='Kerberos Login',
75 # If we get here, negotiate failed
76 trans = self.get_valid_transaction('login', **kwargs)
77 return self.lm.auth_failed(trans)
80 class LoginManager(LoginManagerBase):
82 def __init__(self, *args, **kwargs):
83 super(LoginManager, self).__init__(*args, **kwargs)
85 self.path = 'krb/negotiate'
87 self.description = """
88 Kerberos Negotiate authentication plugin. Relies on the mod_auth_gssapi
89 apache plugin for actual authentication. """
90 self.new_config(self.name)
92 def get_tree(self, site):
93 self.page = Krb(site, self)
94 self.page.__dict__['negotiate'] = KrbAuth(site, self)
95 self.page.__dict__['unauthorized'] = KrbError(site, self)
96 self.page.__dict__['failed'] = KrbError(site, self)
102 <Location /${instance}/login/krb/negotiate>
104 AuthName "GSSAPI Single Sign On Login"
106 GssapiSSLonly $gssapisslonly
110 ErrorDocument 401 /${instance}/login/krb/unauthorized
111 ErrorDocument 500 /${instance}/login/krb/failed
116 class Installer(LoginManagerInstaller):
118 def __init__(self, *pargs):
119 super(Installer, self).__init__()
123 def install_args(self, group):
124 group.add_argument('--krb', choices=['yes', 'no'], default='no',
125 help='Configure Kerberos authentication')
126 group.add_argument('--krb-httpd-keytab',
127 default='/etc/httpd/conf/http.keytab',
128 help='Kerberos keytab location for HTTPD')
130 def configure(self, opts):
131 if opts['krb'] != 'yes':
134 confopts = {'instance': opts['instance']}
136 if os.path.exists(opts['krb_httpd_keytab']):
137 confopts['keytab'] = 'GssapiCredStore keytab:%s' % (
138 opts['krb_httpd_keytab'])
140 raise Exception('Keytab not found')
142 if opts['secure'] == 'no':
143 confopts['gssapisslonly'] = 'Off'
145 confopts['gssapisslonly'] = 'On'
147 tmpl = Template(CONF_TEMPLATE)
148 hunk = tmpl.substitute(**confopts) # pylint: disable=star-args
149 with open(opts['httpd_conf'], 'a') as httpd_conf:
150 httpd_conf.write(hunk)
152 # Add configuration data to database
153 po = PluginObject(*self.pargs)
157 # Update global config, put 'krb' always first
160 if 'krb' not in ph.enabled:
162 enabled.extend(ph.enabled)
163 enabled.insert(0, 'krb')
164 ph.save_enabled(enabled)