Add sample pam based login plugin

Signed-off-by: Simo Sorce <simo@redhat.com>

diff --git a/ipsilon/login/authpam.py b/ipsilon/login/authpam.py
new file mode 100755 (executable)
index 0000000..ce60f39
--- /dev/null
+++ b/ipsilon/login/authpam.py
@@ -0,0 +1,114 @@
+#!/usr/bin/python
+#
+# Copyright (C) 2013  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
+import cherrypy
+import pam
+
+
+class Pam(LoginPageBase):
+
+    def _authenticate(self, username, password):
+        if self.lm.service_name:
+            ok = pam.authenticate(username, password, self.lm.service_name)
+        else:
+            ok = pam.authenticate(username, password)
+
+        if ok:
+            cherrypy.log("User %s successfully authenticated." % username)
+            return username
+
+        cherrypy.log("User %s failed authentication." % username)
+        return None
+
+    def GET(self, *args, **kwargs):
+        return self._template('login/pam.html', title='Login',
+                              action='%s/login/pam' % self.basepath,
+                              service_name=self.lm.service_name,
+                              username_text=self.lm.username_text,
+                              password_text=self.lm.password_text)
+
+    def POST(self, *args, **kwargs):
+        username = None
+        password = None
+        user = None
+        for key, value in kwargs.iteritems():
+            if key == 'login_name':
+                username = value
+            elif key == 'login_password':
+                password = value
+        if username is not None and password is not None:
+            user = self._authenticate(username, password)
+        else:
+            cherrypy.log.error("Error: Username or password is missing")
+
+        if user:
+            return self.lm.auth_successful(user)
+        else:
+            return self.lm.auth_failed()
+
+    def root(self, *args, **kwargs):
+        op = getattr(self, cherrypy.request.method, self.GET)
+        if callable(op):
+            return op(*args, **kwargs)
+
+
+class LoginManager(LoginManagerBase):
+
+    def __init__(self, *args, **kwargs):
+        super(LoginManager, self).__init__(*args, **kwargs)
+        self.name = 'pam'
+        self.path = 'pam'
+        self.page = None
+        self.description = """
+Form based login Manager that uses the system's PAM infrastructure
+for authentication. """
+        self._options = {
+            'service name': [
+                """ The name of the PAM service used to authenticate. """,
+                'string',
+                'remote'
+            ],
+            'username text': [
+                """ The text shown to ask for the username in the form. """,
+                'string',
+                'Username'
+            ],
+            'password text': [
+                """ The text shown to ask for the password in the form. """,
+                'string',
+                'Password'
+            ],
+        }
+
+    @property
+    def service_name(self):
+        return self.get_config_value('service name')
+
+    @property
+    def username_text(self):
+        return self.get_config_value('username text')
+
+    @property
+    def password_text(self):
+        return self.get_config_value('password text')
+
+    def get_tree(self, site):
+        self.page = Pam(site, self)
+        return self.page

diff --git a/templates/login/pam.html b/templates/login/pam.html
new file mode 100644 (file)
index 0000000..4e490fe
--- /dev/null
+++ b/templates/login/pam.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"></meta>
+    <title>{{ title }}</title>
+    <link href="{{ basepath }}/ui/ipsilon.css" type="text/css" rel="stylesheet"></link>
+    <link href="{{ basepath }}/ui/favicon.ico" type="image/ico" rel="icon"></link>
+</head>
+<body>
+    <div id="container">
+        <div id="logo">
+            <p>Ipsilon</p>
+        </div>
+        <div id="login">
+            <form id="login_form" action="{{ action }}" method="post" enctype="application/x-www-form-urlencoded">
+                <p>
+                    <label for="username">{{ username_text }}</label>
+                    <br>
+                    <input id="username" name="login_name" value="" size="32" type="text">
+                </p>
+                <p>
+                    <label for="password">{{ password_text }}</label>
+                    <br>
+                    <input id="password" name="login_password" value="" size="32" type="password">
+                </p>
+                <p>
+                    <input id="submit" name="submit" value="Login" type="submit">
+                </p>
+            </form>
+        </div>
+    </div>
+</body>
+</html>