--- /dev/null
+# Copyright (C) 2014 Simo Sorce <simo@redhat.com>
+#
+# see file 'COPYING' for use and warranty information
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+from ipsilon.login.common import LoginPageBase, LoginManagerBase, \
+ LoginManagerInstaller
+from ipsilon.util.plugin import PluginObject
+from ipsilon.util.user import UserSession
+from string import Template
+import cherrypy
+import os
+
+
+class Krb(LoginPageBase):
+
+ def root(self, *args, **kwargs):
+ # Someone typed manually or a robot is walking th tree.
+ # Redirect to default page
+ return self.lm.redirect_to_path(self.lm.path)
+
+
+class KrbAuth(LoginPageBase):
+
+ def root(self, *args, **kwargs):
+ trans = self.get_valid_transaction('login', **kwargs)
+ # If we can get here, we must be authenticated and remote_user
+ # was set. Check the session has a user set already or error.
+ us = UserSession()
+ us.remote_login()
+ self.user = us.get_user()
+ if not self.user.is_anonymous:
+ principal = cherrypy.request.wsgi_environ.get('GSS_NAME', None)
+ if principal:
+ userdata = {'krb_principal_name': principal}
+ else:
+ userdata = {'krb_principal_name': self.user.name}
+ return self.lm.auth_successful(trans, self.user.name,
+ 'krb', userdata)
+ else:
+ return self.lm.auth_failed(trans)
+
+
+class KrbError(LoginPageBase):
+
+ def root(self, *args, **kwargs):
+ cherrypy.log.error('REQUEST: %s' % cherrypy.request.headers)
+ # If we have no negotiate header return whatever mod_auth_gssapi
+ # generated and wait for the next request
+
+ if 'WWW-Authenticate' not in cherrypy.request.headers:
+ cherrypy.response.status = 401
+
+ next_login = self.lm.next_login()
+ if next_login:
+ return next_login.page.root(*args, **kwargs)
+
+ conturl = '%s/login' % self.basepath
+ return self._template('login/krb.html',
+ title='Kerberos Login',
+ cont=conturl)
+
+ # If we get here, negotiate failed
+ trans = self.get_valid_transaction('login', **kwargs)
+ return self.lm.auth_failed(trans)
+
+
+class LoginManager(LoginManagerBase):
+
+ def __init__(self, *args, **kwargs):
+ super(LoginManager, self).__init__(*args, **kwargs)
+ self.name = 'krb'
+ self.path = 'krb/negotiate'
+ self.page = None
+ self.description = """
+Kerberos Negotiate authentication plugin. Relies on the mod_auth_gssapi
+apache plugin for actual authentication. """
+ self.new_config(self.name)
+
+ def get_tree(self, site):
+ self.page = Krb(site, self)
+ self.page.__dict__['negotiate'] = KrbAuth(site, self)
+ self.page.__dict__['unauthorized'] = KrbError(site, self)
+ self.page.__dict__['failed'] = KrbError(site, self)
+ return self.page
+
+
+CONF_TEMPLATE = """
+
+<Location /${instance}/login/krb/negotiate>
+ AuthType GSSAPI
+ AuthName "GSSAPI Single Sign On Login"
+ $keytab
+ GssapiSSLonly $gssapisslonly
+ GssapiLocalName on
+ Require valid-user
+
+ ErrorDocument 401 /${instance}/login/krb/unauthorized
+ ErrorDocument 500 /${instance}/login/krb/failed
+</Location>
+"""
+
+
+class Installer(LoginManagerInstaller):
+
+ def __init__(self, *pargs):
+ super(Installer, self).__init__()
+ self.name = 'krb'
+ self.pargs = pargs
+
+ def install_args(self, group):
+ group.add_argument('--krb', choices=['yes', 'no'], default='no',
+ help='Configure Kerberos authentication')
+ group.add_argument('--krb-httpd-keytab',
+ default='/etc/httpd/conf/http.keytab',
+ help='Kerberos keytab location for HTTPD')
+
+ def configure(self, opts):
+ if opts['krb'] != 'yes':
+ return
+
+ confopts = {'instance': opts['instance']}
+
+ if os.path.exists(opts['krb_httpd_keytab']):
+ confopts['keytab'] = 'GssapiCredStore keytab:%s' % (
+ opts['krb_httpd_keytab'])
+ else:
+ raise Exception('Keytab not found')
+
+ if opts['secure'] == 'no':
+ confopts['gssapisslonly'] = 'Off'
+ else:
+ confopts['gssapisslonly'] = 'On'
+
+ tmpl = Template(CONF_TEMPLATE)
+ hunk = tmpl.substitute(**confopts) # pylint: disable=star-args
+ with open(opts['httpd_conf'], 'a') as httpd_conf:
+ httpd_conf.write(hunk)
+
+ # Add configuration data to database
+ po = PluginObject(*self.pargs)
+ po.name = 'krb'
+ po.wipe_data()
+
+ # Update global config, put 'krb' always first
+ ph = self.pargs[0]
+ ph.refresh_enabled()
+ if 'krb' not in ph.enabled:
+ enabled = []
+ enabled.extend(ph.enabled)
+ enabled.insert(0, 'krb')
+ ph.save_enabled(enabled)
projects / cascardo / ipsilon.git / blobdiff