add feature flag to disable login button (for systems which autologin)

lms/envs/common.py

@@ -55,6 +55,8 @@ MITX_FEATURES = {
     'ENABLE_SQL_TRACKING_LOGS': False,
     'ENABLE_LMS_MIGRATION': False,
 
+    'DISABLE_LOGIN_BUTTON': False,	# used in systems where login is automatic, eg MIT SSL
+
     # extrernal access methods
     'ACCESS_REQUIRE_STAFF_FOR_COURSE': False,
     'AUTH_USE_OPENID': False,

lms/envs/dev_ike.py

@@ -10,12 +10,17 @@ sessions. Assumes structure:
 from .common import *
 from .logsettings import get_logger_config
 from .dev import *
+import socket
 
 WIKI_ENABLED = False
 MITX_FEATURES['ENABLE_TEXTBOOK'] = False
 MITX_FEATURES['ENABLE_DISCUSSION'] = False
 MITX_FEATURES['ACCESS_REQUIRE_STAFF_FOR_COURSE'] = True	  # require that user be in the staff_* group to be able to enroll
 
+myhost = socket.gethostname()
+if ('edxvm' in myhost) or ('ocw' in myhost):
+    MITX_FEATURES['DISABLE_LOGIN_BUTTON'] = True	# auto-login with MIT certificate
+
 #-----------------------------------------------------------------------------
 # disable django debug toolbars