strip processed fields in instructor dash

lms/djangoapps/instructor/views/api.py

@@ -233,7 +233,7 @@ def modify_access(request, course_id):
         request.user, course_id, 'instructor', depth=None
     )
 
-    email = request.GET.get('email')
+    email = _clean_field(request.GET.get('email'))
     rolename = request.GET.get('rolename')
     action = request.GET.get('action')
 
@@ -433,7 +433,7 @@ def get_student_progress_url(request, course_id):
         'progress_url': '/../...'
     }
     """
-    student_email = request.GET.get('student_email')
+    student_email = _clean_field(request.GET.get('student_email'))
     user = User.objects.get(email=student_email)
 
     progress_url = reverse('student_progress', kwargs={'course_id': course_id, 'student_id': user.id})
@@ -474,8 +474,8 @@ def reset_student_attempts(request, course_id):
         request.user, course_id, 'staff', depth=None
     )
 
-    problem_to_reset = request.GET.get('problem_to_reset')
-    student_email = request.GET.get('student_email')
+    problem_to_reset = _clean_field(request.GET.get('problem_to_reset'))
+    student_email = _clean_field(request.GET.get('student_email'))
     all_students = request.GET.get('all_students', False) in ['true', 'True', True]
     delete_module = request.GET.get('delete_module', False) in ['true', 'True', True]
 
@@ -531,8 +531,8 @@ def rescore_problem(request, course_id):
 
     all_students and student_email cannot both be present.
     """
-    problem_to_reset = request.GET.get('problem_to_reset')
-    student_email = request.GET.get('student_email', False)
+    problem_to_reset = _clean_field(request.GET.get('problem_to_reset'))
+    student_email = _clean_field(request.GET.get('student_email', False))
     all_students = request.GET.get('all_students') in ['true', 'True', True]
 
     if not (problem_to_reset and (all_students or student_email)):
@@ -576,8 +576,8 @@ def list_instructor_tasks(request, course_id):
         - `problem_urlname` and `student_email` lists task
             history for problem AND student (intersection)
     """
-    problem_urlname = request.GET.get('problem_urlname', False)
-    student_email = request.GET.get('student_email', False)
+    problem_urlname = _clean_field(request.GET.get('problem_urlname', False))
+    student_email = _clean_field(request.GET.get('student_email', False))
 
     if student_email and not problem_urlname:
         return HttpResponseBadRequest(
@@ -693,7 +693,7 @@ def update_forum_role_membership(request, course_id):
         request.user, course_id, FORUM_ROLE_ADMINISTRATOR
     )
 
-    email = request.GET.get('email')
+    email = _clean_field(request.GET.get('email'))
     rolename = request.GET.get('rolename')
     action = request.GET.get('action')
 
@@ -815,3 +815,8 @@ def _msk_from_problem_urlname(course_id, urlname):
     (org, course_name, __) = course_id.split("/")
     module_state_key = "i4x://" + org + "/" + course_name + "/" + urlname
     return module_state_key
+
+def _clean_field(field):
+    if field:
+        return field.strip()
+    return field

lms/djangoapps/instructor/views/legacy.py

@@ -171,6 +171,9 @@ def instructor_dashboard(request, course_id):
         Form is either urlname or modulename/urlname.  If no modulename
         is provided, "problem" is assumed.
         """
+        # remove whitespace
+        urlname = _clean_field(urlname)
+
         # tolerate an XML suffix in the urlname
         if urlname[-4:] == ".xml":
             urlname = urlname[:-4]
@@ -185,6 +188,7 @@ def instructor_dashboard(request, course_id):
 
     def get_student_from_identifier(unique_student_identifier):
         """Gets a student object using either an email address or username"""
+        unique_student_identifier = _clean_field(unique_student_identifier)
         msg = ""
         try:
             if "@" in unique_student_identifier:
@@ -706,12 +710,14 @@ def instructor_dashboard(request, course_id):
         html_message = request.POST.get("message")
         text_message = html_to_text(html_message)
 
-        email = CourseEmail(course_id=course_id,
+        email = CourseEmail(
+            course_id=course_id,
             sender=request.user,
             to_option=email_to_option,
             subject=email_subject,
             html_message=html_message,
-                            text_message=text_message)
+            text_message=text_message
+        )
 
         email.save()
 
@@ -994,6 +1000,7 @@ def _add_or_remove_user_group(request, username_or_email, group, group_title, ev
     to do.
     """
     user = None
+    username_or_email = _clean_field(username_or_email)
     try:
         if '@' in username_or_email:
             user = User.objects.get(email=username_or_email)
@@ -1561,3 +1568,9 @@ def get_background_task_table(course_id, problem_url, student=None):
             datatable['title'] = "{course_id} > {location}".format(course_id=course_id, location=problem_url)
 
     return msg, datatable
+
+def _clean_field(field):
+    if field:
+        return field.strip()
+    return field
+