Apply a tempate filter to output for openrc.sh

When special characters are used in tenant names, horizon escapes them
when generating openrc.sh for example & is written as &

Change-Id: I3fbb6c66c6ccc09ad48eb224e26ab9851191bb46
Fixes: bug #1100042

horizon/templatetags/shellfilter.py

@@ -0,0 +1,32 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from django.template import base
+from django.template import defaultfilters
+from django.utils import safestring
+
+register = base.Library()
+
+
+@register.filter(is_safe=True)
+@defaultfilters.stringfilter
+def shellfilter(value):
+    """Replace HTML chars for shell usage."""
+    replacements = {'\\': '\\\\',
+                   '`': '\`',
+                   "'": "\\'",
+                   '"': '\\"'}
+    for search, repl in replacements.items():
+        value = value.replace(search, repl)
+    return safestring.mark_safe(value)

openstack_dashboard/dashboards/project/access_and_security/templates/access_and_security/api_access/openrc.sh.template

@@ -1,3 +1,4 @@
+{% load shellfilter %}
 #!/bin/bash
 
 # With the addition of Keystone, to use an openstack cloud you should
@@ -12,11 +13,11 @@ export OS_AUTH_URL={{ auth_url }}
 # With the addition of Keystone we have standardized on the term **tenant**
 # as the entity that owns the resources.
 export OS_TENANT_ID={{ tenant_id }}
-export OS_TENANT_NAME="{{ tenant_name }}"
+export OS_TENANT_NAME="{{ tenant_name|shellfilter }}"
 
 # In addition to the owning entity (tenant), openstack stores the entity
 # performing the action as the **user**.
-export OS_USERNAME={{ user.username }}
+export OS_USERNAME="{{ user.username|shellfilter }}"
 
 # With Keystone you pass the keystone password.
 echo "Please enter your OpenStack Password: "

openstack_dashboard/test/tests/templates.py

@@ -0,0 +1,71 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright (c) 2012 OpenStack, LLC.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from django import template
+from django.template import loader
+from openstack_dashboard.test import helpers as test
+
+
+class FakeUser(object):
+    username = "cool user"
+
+
+class TemplateRenderTest(test.TestCase):
+    """ Tests for templates render """
+
+    def test_openrc_html_escape(self):
+        context = {
+            "user": FakeUser(),
+            "tenant_id": "some-cool-id",
+            "auth_url": "http://tests.com",
+            "tenant_name": "ENG Perf R&D"}
+        out = loader.render_to_string(
+                'project/access_and_security/api_access/openrc.sh.template',
+                context,
+                template.Context(context))
+
+        self.assertFalse("&" in out)
+        self.assertTrue("ENG Perf R&D" in out)
+
+    def test_openrc_html_evil_shell_escape(self):
+        context = {
+            "user": FakeUser(),
+            "tenant_id": "some-cool-id",
+            "auth_url": "http://tests.com",
+            "tenant_name": 'o"; sudo rm -rf /'}
+        out = loader.render_to_string(
+                'project/access_and_security/api_access/openrc.sh.template',
+                context,
+                template.Context(context))
+
+        self.assertFalse('o"' in out)
+        self.assertTrue('\"' in out)
+
+    def test_openrc_html_evil_shell_backslash_escape(self):
+        context = {
+            "user": FakeUser(),
+            "tenant_id": "some-cool-id",
+            "auth_url": "http://tests.com",
+            "tenant_name": 'o\"; sudo rm -rf /'}
+        out = loader.render_to_string(
+                'project/access_and_security/api_access/openrc.sh.template',
+                context,
+                template.Context(context))
+
+        self.assertFalse('o\"' in out)
+        self.assertFalse('o"' in out)
+        self.assertTrue('\\"' in out)