add AUTH_USE_MIT_CERTIFICATES feature flag to CMS, and @ssl_login_shortcut

cms/djangoapps/contentstore/views.py

@@ -37,6 +37,7 @@ from xmodule.error_module import ErrorDescriptor
 from xmodule.errortracker import exc_info_to_str
 from github_sync import export_to_github
 from static_replace import replace_urls
+from external_auth.views import ssl_login_shortcut
 
 from mitxmako.shortcuts import render_to_response, render_to_string
 from xmodule.modulestore.django import modulestore
@@ -88,7 +89,7 @@ def signup(request):
     csrf_token = csrf(request)['csrf_token']
     return render_to_response('signup.html', {'csrf': csrf_token})
 
-
+@ssl_login_shortcut
 @ensure_csrf_cookie
 def login_page(request):
     """

cms/envs/common.py

@@ -32,7 +32,8 @@ from xmodule.static_content import write_descriptor_styles, write_descriptor_js,
 MITX_FEATURES = {
     'USE_DJANGO_PIPELINE': True,
     'GITHUB_PUSH': False,
-    'ENABLE_DISCUSSION_SERVICE': False
+    'ENABLE_DISCUSSION_SERVICE': False,
+    'AUTH_USE_MIT_CERTIFICATES' : False,
 }
 
 # needed to use lms student app

cms/envs/dev_ike.py

 # dev environment for ichuang/mit
 
+# FORCE_SCRIPT_NAME = '/cms'
+
 from .common import *
 from logsettings import get_logger_config
 from .dev import *
 import socket
 
-#MITX_FEATURES['USE_DJANGO_PIPELINE']=False      # don't recompile scss
+MITX_FEATURES['AUTH_USE_MIT_CERTIFICATES'] = True
+
+MITX_FEATURES['USE_DJANGO_PIPELINE']=False      # don't recompile scss
+
+SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTOCOL', 'https')	# django 1.4 for nginx ssl proxy
+
+MITX_ROOT_URL = 'https://qisx.mit.edu:442'
+#MITX_ROOT_URL = 'cms'
+
+LOGIN_REDIRECT_URL = MITX_ROOT_URL + '/login'
+LOGIN_URL = MITX_ROOT_URL + '/login'
+

common/djangoapps/external_auth/views.py

@@ -215,6 +215,52 @@ def ssl_dn_extract_info(dn):
     else:
         return None
     return (user, email, fullname)
+    
+
+def ssl_get_cert_from_request(request):
+    """
+    Extract user information from certificate, if it exists, returning (user, email, fullname).
+    Else return None.
+    """
+    certkey = "SSL_CLIENT_S_DN"  # specify the request.META field to use
+
+    cert = request.META.get(certkey, '')
+    if not cert:
+        cert = request.META.get('HTTP_' + certkey, '')
+    if not cert:
+        try:
+            # try the direct apache2 SSL key
+            cert = request._req.subprocess_env.get(certkey, '')
+        except Exception:
+            return ''
+
+    return cert
+
+    (user, email, fullname) = ssl_dn_extract_info(cert)
+    return (user, email, fullname)
+
+
+def ssl_login_shortcut(fn):
+    """
+    Python function decorator for login procedures, to allow direct login
+    based on existing ExternalAuth record and MIT ssl certificate.
+    """
+    def wrapped(*args, **kwargs):
+        if not settings.MITX_FEATURES['AUTH_USE_MIT_CERTIFICATES']:
+            return fn(*args, **kwargs)
+        request = args[0]
+        cert = ssl_get_cert_from_request(request)
+        if not cert:		# no certificate information - show normal login window
+            return fn(*args, **kwargs)
+
+        (user, email, fullname) = ssl_dn_extract_info(cert)
+        return external_login_or_signup(request,
+                                        external_id=email,
+                                        external_domain="ssl:MIT",
+                                        credentials=cert,
+                                        email=email,
+                                        fullname=fullname)
+    return wrapped
 
 
 @csrf_exempt
@@ -234,17 +280,7 @@ def ssl_login(request):
 
     Else continues on with student.views.index, and no authentication.
     """
-    certkey = "SSL_CLIENT_S_DN"  # specify the request.META field to use
-
-    cert = request.META.get(certkey, '')
-    if not cert:
-        cert = request.META.get('HTTP_' + certkey, '')
-    if not cert:
-        try:
-            # try the direct apache2 SSL key
-            cert = request._req.subprocess_env.get(certkey, '')
-        except Exception:
-            cert = None
+    cert = ssl_get_cert_from_request(request)
 
     if not cert:
         # no certificate information - go onward to main index