Configure code jail for cms

cms/envs/aws.py

@@ -176,6 +176,14 @@ SERVER_EMAIL = ENV_TOKENS.get('SERVER_EMAIL', SERVER_EMAIL)
 MKTG_URLS = ENV_TOKENS.get('MKTG_URLS', MKTG_URLS)
 TECH_SUPPORT_EMAIL = ENV_TOKENS.get('TECH_SUPPORT_EMAIL', TECH_SUPPORT_EMAIL)
 
+for name, value in ENV_TOKENS.get("CODE_JAIL", {}).items():
+    oldvalue = CODE_JAIL.get(name)
+    if isinstance(oldvalue, dict):
+        for subname, subvalue in value.items():
+            oldvalue[subname] = subvalue
+    else:
+        CODE_JAIL[name] = value
+
 COURSES_WITH_UNSAFE_CODE = ENV_TOKENS.get("COURSES_WITH_UNSAFE_CODE", [])
 
 ASSET_IGNORE_REGEX = ENV_TOKENS.get('ASSET_IGNORE_REGEX', ASSET_IGNORE_REGEX)

cms/envs/common.py

@@ -342,6 +342,8 @@ MIDDLEWARE_CLASSES = (
     # Detects user-requested locale from 'accept-language' header in http request
     'django.middleware.locale.LocaleMiddleware',
 
+    'codejail.django_integration.ConfigureCodeJailMiddleware',
+
     # needs to run after locale middleware (or anything that modifies the request context)
     'edxmako.middleware.MakoMiddleware',
 
@@ -412,6 +414,21 @@ MODULESTORE = {
     }
 }
 
+#################### Python sandbox ############################################
+
+CODE_JAIL = {
+    # Path to a sandboxed Python executable.  None means don't bother.
+    'python_bin': None,
+    # User to run as in the sandbox.
+    'user': 'sandbox',
+
+    # Configurable limits.
+    'limits': {
+        # How many CPU seconds can jailed code use?
+        'CPU': 1,
+    },
+}
+
 ############################ DJANGO_BUILTINS ################################
 # Change DEBUG in your environment settings files, not here
 DEBUG = False