Support for SSL in wsgi.Service

Enable support for SSL as well using code from glance. We
have some new options for configuring the SSL support.

test_app starts wsgi.Service with a test app, then creates
a url to make sure the http requests are actually served
properly

test_app_using_router adds wsgi.Router and Mapper() to the
mix along with using the wsgify annotation for serving
the http requests

Fixes LP# 979488 (partial)
Fixes LP# 869884 (partial)

DocImpact

Change-Id: Iae47b13b50e00c102c8c36f4a3e73b24fa4e6303

1 files changed, 79 insertions, 0 deletions

diff --git a/openstack/common/sslutils.py b/openstack/common/sslutils.py
new file mode 100644
index 0000000..d813e7a
--- /dev/null
+++ b/openstack/common/sslutils.py
@@ -0,0 +1,79 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 IBM
+#
+#    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.
+
+import os
+import ssl
+
+from openstack.common import cfg
+from openstack.common.gettextutils import _
+
+
+ssl_opts = [
+    cfg.StrOpt('ca_file',
+               default=None,
+               help="CA certificate file to use to verify "
+                    "connecting clients"),
+    cfg.StrOpt('cert_file',
+               default=None,
+               help="Certificate file to use when starting "
+                    "the server securely"),
+    cfg.StrOpt('key_file',
+               default=None,
+               help="Private key file to use when starting "
+                    "the server securely"),
+]
+
+
+CONF = cfg.CONF
+CONF.register_opts(ssl_opts, "ssl")
+
+
+def is_enabled():
+    cert_file = CONF.ssl.cert_file
+    key_file = CONF.ssl.key_file
+    ca_file = CONF.ssl.ca_file
+    use_ssl = cert_file or key_file
+
+    if cert_file and not os.path.exists(cert_file):
+        raise RuntimeError(_("Unable to find cert_file : %s") % cert_file)
+
+    if ca_file and not os.path.exists(ca_file):
+        raise RuntimeError(_("Unable to find ca_file : %s") % ca_file)
+
+    if key_file and not os.path.exists(key_file):
+        raise RuntimeError(_("Unable to find key_file : %s") % key_file)
+
+    if use_ssl and (not cert_file or not key_file):
+        raise RuntimeError(_("When running server in SSL mode, you must "
+                             "specify both a cert_file and key_file "
+                             "option value in your configuration file"))
+
+    return use_ssl
+
+
+def wrap(sock):
+    ssl_kwargs = {
+        'server_side': True,
+        'certfile': CONF.ssl.cert_file,
+        'keyfile': CONF.ssl.key_file,
+        'cert_reqs': ssl.CERT_NONE,
+    }
+
+    if CONF.ssl.ca_file:
+        ssl_kwargs['ca_certs'] = CONF.ssl.ca_file
+        ssl_kwargs['cert_reqs'] = ssl.CERT_REQUIRED
+
+    return ssl.wrap_socket(sock, **ssl_kwargs)