def post(self, request, course_id, checkpoint_name): """Submits the re-verification attempt to SoftwareSecure Args: request(HttpRequest): HttpRequest object course_id(str): Course Id checkpoint_name(str): Checkpoint name Returns: HttpResponse with status_code 400 if photo is missing or any error or redirect to verify_student_verify_later url if initial verification doesn't exist otherwise HttpsResponse with status code 200 """ # Check the in-course re-verification is enabled or not incourse_reverify_enabled = InCourseReverificationConfiguration.current().enabled if not incourse_reverify_enabled: raise Http404 user = request.user course_key = CourseKey.from_string(course_id) course = modulestore().get_course(course_key) checkpoint = VerificationCheckpoint.get_verification_checkpoint(course_key, checkpoint_name) if checkpoint is None: log.error("Checkpoint is not defined. Could not submit verification attempt for user %s", request.user.id) context = { 'course_key': unicode(course_key), 'course_name': course.display_name_with_default, 'checkpoint_name': checkpoint_name, 'error': True, 'errorMsg': _("No checkpoint found"), 'platform_name': settings.PLATFORM_NAME, } return render_to_response("verify_student/incourse_reverify.html", context) init_verification = SoftwareSecurePhotoVerification.get_initial_verification(user) if not init_verification: log.error("Could not submit verification attempt for user %s", request.user.id) return redirect(reverse('verify_student_verify_later', kwargs={'course_id': unicode(course_key)})) try: attempt = SoftwareSecurePhotoVerification.submit_faceimage( request.user, request.POST['face_image'], init_verification.photo_id_key ) checkpoint.add_verification_attempt(attempt) VerificationStatus.add_verification_status(checkpoint, user, "submitted") # emit the reverification event self._track_reverification_events( EVENT_NAME_USER_SUBMITTED_INCOURSE_REVERIFY, user.id, course_id, checkpoint_name ) return HttpResponse() except IndexError: log.exception("Invalid image data during photo verification.") return HttpResponseBadRequest(_("Invalid image data during photo verification.")) except Exception: # pylint: disable=broad-except log.exception("Could not submit verification attempt for user {}.").format(request.user.id) msg = _("Could not submit photos") return HttpResponseBadRequest(msg)
def test_add_verification_status(self, status): """adding verfication status using the class method.""" # adding verification status VerificationStatus.add_verification_status(checkpoint=self.check_point1, user=self.user, status=status) # getting the status from db result = VerificationStatus.objects.filter(checkpoint=self.check_point1)[0] self.assertEqual(result.status, status) self.assertEqual(result.user, self.user)
def test_get_user_attempts(self): """ Test adding verification status. """ VerificationStatus.add_verification_status(checkpoint=self.first_checkpoint, user=self.user, status="submitted") actual_attempts = VerificationStatus.get_user_attempts( self.user.id, self.course.id, self.first_checkpoint_location ) self.assertEqual(actual_attempts, 1)
def test_add_verification_status(self, status): """ Adding verification status using the class method. """ # adding verification status VerificationStatus.add_verification_status(checkpoint=self.first_checkpoint, user=self.user, status=status) # test the status from database result = VerificationStatus.objects.filter(checkpoint=self.first_checkpoint)[0] self.assertEqual(result.status, status) self.assertEqual(result.user, self.user)
def test_get_user_attempts(self): """ Test adding verification status. """ VerificationStatus.add_verification_status( checkpoint=self.first_checkpoint, user=self.user, status='submitted') actual_attempts = VerificationStatus.get_user_attempts( self.user.id, self.course.id, self.first_checkpoint_location) self.assertEqual(actual_attempts, 1)
def test_add_verification_status(self, status): """ Adding verification status using the class method. """ # adding verification status VerificationStatus.add_verification_status( checkpoint=self.first_checkpoint, user=self.user, status=status) # test the status from database result = VerificationStatus.objects.filter( checkpoint=self.first_checkpoint)[0] self.assertEqual(result.status, status) self.assertEqual(result.user, self.user)
def test_add_status_from_checkpoints(self, status): """adding verfication status for checkpoints list.""" # adding verification status with multiple points VerificationStatus.add_status_from_checkpoints( checkpoints=[self.check_point1, self.check_point2], user=self.user, status=status ) # getting the status from db. result = VerificationStatus.objects.filter(user=self.user) self.assertEqual(len(result), len([self.check_point1.checkpoint_name, self.check_point2.checkpoint_name])) self.assertEqual(result[0].checkpoint.checkpoint_name, self.check_point1.checkpoint_name) self.assertEqual(result[1].checkpoint.checkpoint_name, self.check_point2.checkpoint_name)
def test_get_location_id(self): """ Getting location id for a specific checkpoint. """ # creating software secure attempt against checkpoint self.first_checkpoint.add_verification_attempt(SoftwareSecurePhotoVerification.objects.create(user=self.user)) # add initial verification status for checkpoint VerificationStatus.add_verification_status(checkpoint=self.first_checkpoint, user=self.user, status="submitted") attempt = SoftwareSecurePhotoVerification.objects.filter(user=self.user) self.assertIsNotNone(VerificationStatus.get_location_id(attempt)) self.assertEqual(VerificationStatus.get_location_id(None), "")
def test_get_user_attempts(self): """ Test adding verification status. """ VerificationStatus.add_verification_status( checkpoint=self.first_checkpoint, user=self.user, status='submitted') self.assertEqual( VerificationStatus.get_user_attempts( user_id=self.user.id, course_key=self.course.id, related_assessment_location=self.first_checkpoint_location), 1)
def test_get_user_attempts(self): # adding verification status VerificationStatus.add_verification_status( checkpoint=self.check_point1, user=self.user, status='submitted', location_id=self.dummy_reverification_item_id_1 ) self.assertEqual(VerificationStatus.get_user_attempts( course_key=self.course.id, user_id=self.user.id, related_assessment='midterm', location_id=self.dummy_reverification_item_id_1), 1)
def test_get_user_attempts(self): """ Test adding verification status. """ VerificationStatus.add_verification_status( checkpoint=self.first_checkpoint, user=self.user, status='submitted' ) self.assertEqual( VerificationStatus.get_user_attempts( user_id=self.user.id, course_key=self.course.id, related_assessment_location=self.first_checkpoint_location ), 1 )
def test_get_location_id(self): """ Getting location id for a specific checkpoint. """ # creating software secure attempt against checkpoint self.first_checkpoint.add_verification_attempt(SoftwareSecurePhotoVerification.objects.create(user=self.user)) # add initial verification status for checkpoint VerificationStatus.add_verification_status( checkpoint=self.first_checkpoint, user=self.user, status='submitted', ) attempt = SoftwareSecurePhotoVerification.objects.filter(user=self.user) self.assertIsNotNone(VerificationStatus.get_location_id(attempt)) self.assertEqual(VerificationStatus.get_location_id(None), '')
def test_get_location_id(self): """ Getting location id for a specific checkpoint """ # creating software secure attempt against checkpoint self.check_point1.add_verification_attempt(SoftwareSecurePhotoVerification.objects.create(user=self.user)) # add initial verification status for checkpoint VerificationStatus.add_verification_status( checkpoint=self.check_point1, user=self.user, status='submitted', location_id=self.dummy_reverification_item_id_1 ) attempt = SoftwareSecurePhotoVerification.objects.filter(user=self.user) self.assertIsNotNone(VerificationStatus.get_location_id(attempt)) self.assertEqual(VerificationStatus.get_location_id(None), '')
def test_add_status_from_checkpoints(self, status): """Test verification status for reverification checkpoints after submitting software secure photo verification. """ # add initial verification status for checkpoints initial_status = "submitted" VerificationStatus.add_verification_status( checkpoint=self.first_checkpoint, user=self.user, status=initial_status ) VerificationStatus.add_verification_status( checkpoint=self.second_checkpoint, user=self.user, status=initial_status ) # now add verification status for multiple checkpoint points VerificationStatus.add_status_from_checkpoints( checkpoints=[self.first_checkpoint, self.second_checkpoint], user=self.user, status=status ) # test that verification status entries with new status have been added # for both checkpoints result = VerificationStatus.objects.filter(user=self.user, checkpoint=self.first_checkpoint) self.assertEqual(len(result), len(self.first_checkpoint.checkpoint_status.all())) self.assertEqual( list(result.values_list("checkpoint__checkpoint_location", flat=True)), list(self.first_checkpoint.checkpoint_status.values_list("checkpoint__checkpoint_location", flat=True)), ) result = VerificationStatus.objects.filter(user=self.user, checkpoint=self.second_checkpoint) self.assertEqual(len(result), len(self.second_checkpoint.checkpoint_status.all())) self.assertEqual( list(result.values_list("checkpoint__checkpoint_location", flat=True)), list(self.second_checkpoint.checkpoint_status.values_list("checkpoint__checkpoint_location", flat=True)), )
def handle(self, *args, **kwargs): # pylint: disable=unused-argument from verify_student.views import _set_user_requirement_status status_to_set = args[0] receipt_id = args[1] try: attempt = SoftwareSecurePhotoVerification.objects.get(receipt_id=receipt_id) except SoftwareSecurePhotoVerification.DoesNotExist: self.stderr.write( 'SoftwareSecurePhotoVerification with id {id} could not be found.\n'.format(id=receipt_id) ) sys.exit(1) if status_to_set == 'approved': self.stdout.write('Approving verification for {id}.\n'.format(id=receipt_id)) attempt.approve() _set_user_requirement_status(attempt, 'reverification', 'satisfied') elif status_to_set == 'denied': self.stdout.write('Denying verification for {id}.\n'.format(id=receipt_id)) if len(args) >= 3: reason_for_denial = args[2] else: reason_for_denial = 'Denied via management command.' attempt.deny(reason_for_denial) _set_user_requirement_status(attempt, 'reverification', 'failed', reason_for_denial) else: self.stdout.write('Cannot set id {id} to unrecognized status {status}'.format( id=receipt_id, status=status_to_set )) sys.exit(1) checkpoints = VerificationCheckpoint.objects.filter(photo_verification=attempt).all() VerificationStatus.add_status_from_checkpoints( checkpoints=checkpoints, user=attempt.user, status=status_to_set )
def get_attempts(self, user_id, course_id, related_assessment_location): """Get re-verification attempts against a user for a given 'checkpoint' and 'course_id'. Args: user_id(str): User Id string course_id(str): A string of course id related_assessment_location(str): Location of Reverification XBlock Returns: Number of re-verification attempts of a user """ course_key = CourseKey.from_string(course_id) return VerificationStatus.get_user_attempts(user_id, course_key, related_assessment_location)
def test_add_status_from_checkpoints(self, status): """Test verification status for reverification checkpoints after submitting software secure photo verification. """ # add initial verification status for checkpoints initial_status = "submitted" VerificationStatus.add_verification_status( checkpoint=self.first_checkpoint, user=self.user, status=initial_status) VerificationStatus.add_verification_status( checkpoint=self.second_checkpoint, user=self.user, status=initial_status) # now add verification status for multiple checkpoint points VerificationStatus.add_status_from_checkpoints( checkpoints=[self.first_checkpoint, self.second_checkpoint], user=self.user, status=status) # test that verification status entries with new status have been added # for both checkpoints result = VerificationStatus.objects.filter( user=self.user, checkpoint=self.first_checkpoint) self.assertEqual(len(result), len(self.first_checkpoint.checkpoint_status.all())) self.assertEqual( list( result.values_list('checkpoint__checkpoint_location', flat=True)), list( self.first_checkpoint.checkpoint_status.values_list( 'checkpoint__checkpoint_location', flat=True))) result = VerificationStatus.objects.filter( user=self.user, checkpoint=self.second_checkpoint) self.assertEqual(len(result), len(self.second_checkpoint.checkpoint_status.all())) self.assertEqual( list( result.values_list('checkpoint__checkpoint_location', flat=True)), list( self.second_checkpoint.checkpoint_status.values_list( 'checkpoint__checkpoint_location', flat=True)))
def test_add_status_from_checkpoints(self, status): """ Adding verification status for checkpoints list after submitting sspv. """ # add initial verification status for checkpoints initial_status = "submitted" VerificationStatus.add_verification_status( checkpoint=self.check_point1, user=self.user, status=initial_status, location_id=self.dummy_reverification_item_id_1) VerificationStatus.add_verification_status( checkpoint=self.check_point2, user=self.user, status=initial_status, location_id=self.dummy_reverification_item_id_2) # now add verification status for multiple checkpoint points VerificationStatus.add_status_from_checkpoints( checkpoints=[self.check_point1, self.check_point2], user=self.user, status=status) # test that verification status entries with new status have been added # for both checkpoints and all entries have related 'location_id'. result = VerificationStatus.objects.filter( user=self.user, checkpoint=self.check_point1) self.assertEqual(len(result), len(self.check_point1.checkpoint_status.all())) self.assertEqual( list(result.values_list('location_id', flat=True)), list(self.check_point1.checkpoint_status.all().values_list( 'location_id', flat=True))) result = VerificationStatus.objects.filter( user=self.user, checkpoint=self.check_point2) self.assertEqual(len(result), len(self.check_point2.checkpoint_status.all())) self.assertEqual( list(result.values_list('location_id', flat=True)), list(self.check_point2.checkpoint_status.all().values_list( 'location_id', flat=True)))
def test_add_status_from_checkpoints(self, status): """ Adding verification status for checkpoints list after submitting sspv. """ # add initial verification status for checkpoints initial_status = "submitted" VerificationStatus.add_verification_status( checkpoint=self.check_point1, user=self.user, status=initial_status, location_id=self.dummy_reverification_item_id_1 ) VerificationStatus.add_verification_status( checkpoint=self.check_point2, user=self.user, status=initial_status, location_id=self.dummy_reverification_item_id_2 ) # now add verification status for multiple checkpoint points VerificationStatus.add_status_from_checkpoints( checkpoints=[self.check_point1, self.check_point2], user=self.user, status=status ) # test that verification status entries with new status have been added # for both checkpoints and all entries have related 'location_id'. result = VerificationStatus.objects.filter(user=self.user, checkpoint=self.check_point1) self.assertEqual(len(result), len(self.check_point1.checkpoint_status.all())) self.assertEqual( list(result.values_list('location_id', flat=True)), list(self.check_point1.checkpoint_status.all().values_list('location_id', flat=True)) ) result = VerificationStatus.objects.filter(user=self.user, checkpoint=self.check_point2) self.assertEqual(len(result), len(self.check_point2.checkpoint_status.all())) self.assertEqual( list(result.values_list('location_id', flat=True)), list(self.check_point2.checkpoint_status.all().values_list('location_id', flat=True)) )
def results_callback(request): """ Software Secure will call this callback to tell us whether a user is verified to be who they said they are. """ body = request.body try: body_dict = json.loads(body) except ValueError: log.exception("Invalid JSON received from Software Secure:\n\n{}\n".format(body)) return HttpResponseBadRequest("Invalid JSON. Received:\n\n{}".format(body)) if not isinstance(body_dict, dict): log.error("Reply from Software Secure is not a dict:\n\n{}\n".format(body)) return HttpResponseBadRequest("JSON should be dict. Received:\n\n{}".format(body)) headers = { "Authorization": request.META.get("HTTP_AUTHORIZATION", ""), "Date": request.META.get("HTTP_DATE", "") } sig_valid = ssencrypt.has_valid_signature( "POST", headers, body_dict, settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_ACCESS_KEY"], settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_SECRET_KEY"] ) _response, access_key_and_sig = headers["Authorization"].split(" ") access_key = access_key_and_sig.split(":")[0] # This is what we should be doing... #if not sig_valid: # return HttpResponseBadRequest("Signature is invalid") # This is what we're doing until we can figure out why we disagree on sigs if access_key != settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_ACCESS_KEY"]: return HttpResponseBadRequest("Access key invalid") receipt_id = body_dict.get("EdX-ID") result = body_dict.get("Result") reason = body_dict.get("Reason", "") error_code = body_dict.get("MessageType", "") try: attempt = SoftwareSecurePhotoVerification.objects.get(receipt_id=receipt_id) except SoftwareSecurePhotoVerification.DoesNotExist: log.error("Software Secure posted back for receipt_id {}, but not found".format(receipt_id)) return HttpResponseBadRequest("edX ID {} not found".format(receipt_id)) checkpoints = VerificationCheckpoint.objects.filter(photo_verification=attempt).all() if result == "PASS": log.debug("Approving verification for {}".format(receipt_id)) attempt.approve() status = "approved" elif result == "FAIL": log.debug("Denying verification for {}".format(receipt_id)) attempt.deny(json.dumps(reason), error_code=error_code) status = "denied" elif result == "SYSTEM FAIL": log.debug("System failure for {} -- resetting to must_retry".format(receipt_id)) attempt.system_error(json.dumps(reason), error_code=error_code) status = "error" log.error("Software Secure callback attempt for %s failed: %s", receipt_id, reason) else: log.error("Software Secure returned unknown result {}".format(result)) return HttpResponseBadRequest( "Result {} not understood. Known results: PASS, FAIL, SYSTEM FAIL".format(result) ) # If this is a reverification, log an event if attempt.window: course_id = attempt.window.course_id course_enrollment = CourseEnrollment.get_or_create_enrollment(attempt.user, course_id) course_enrollment.emit_event(EVENT_NAME_USER_REVERIFICATION_REVIEWED_BY_SOFTWARESECURE) VerificationStatus.add_status_from_checkpoints(checkpoints=checkpoints, user=attempt.user, status=status) return HttpResponse("OK!")
def results_callback(request): """ Software Secure will call this callback to tell us whether a user is verified to be who they said they are. """ body = request.body try: body_dict = json.loads(body) except ValueError: log.exception("Invalid JSON received from Software Secure:\n\n{}\n".format(body)) return HttpResponseBadRequest("Invalid JSON. Received:\n\n{}".format(body)) if not isinstance(body_dict, dict): log.error("Reply from Software Secure is not a dict:\n\n{}\n".format(body)) return HttpResponseBadRequest("JSON should be dict. Received:\n\n{}".format(body)) headers = { "Authorization": request.META.get("HTTP_AUTHORIZATION", ""), "Date": request.META.get("HTTP_DATE", "") } has_valid_signature( "POST", headers, body_dict, settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_ACCESS_KEY"], settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_SECRET_KEY"] ) _response, access_key_and_sig = headers["Authorization"].split(" ") access_key = access_key_and_sig.split(":")[0] # This is what we should be doing... #if not sig_valid: # return HttpResponseBadRequest("Signature is invalid") # This is what we're doing until we can figure out why we disagree on sigs if access_key != settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_ACCESS_KEY"]: return HttpResponseBadRequest("Access key invalid") receipt_id = body_dict.get("EdX-ID") result = body_dict.get("Result") reason = body_dict.get("Reason", "") error_code = body_dict.get("MessageType", "") try: attempt = SoftwareSecurePhotoVerification.objects.get(receipt_id=receipt_id) except SoftwareSecurePhotoVerification.DoesNotExist: log.error("Software Secure posted back for receipt_id %s, but not found", receipt_id) return HttpResponseBadRequest("edX ID {} not found".format(receipt_id)) if result == "PASS": log.debug("Approving verification for %s", receipt_id) attempt.approve() status = "approved" _set_user_requirement_status(attempt, 'reverification', 'satisfied') elif result == "FAIL": log.debug("Denying verification for %s", receipt_id) attempt.deny(json.dumps(reason), error_code=error_code) status = "denied" _set_user_requirement_status( attempt, 'reverification', 'failed', json.dumps(reason) ) elif result == "SYSTEM FAIL": log.debug("System failure for %s -- resetting to must_retry", receipt_id) attempt.system_error(json.dumps(reason), error_code=error_code) status = "error" log.error("Software Secure callback attempt for %s failed: %s", receipt_id, reason) else: log.error("Software Secure returned unknown result %s", result) return HttpResponseBadRequest( "Result {} not understood. Known results: PASS, FAIL, SYSTEM FAIL".format(result) ) incourse_reverify_enabled = InCourseReverificationConfiguration.current().enabled if incourse_reverify_enabled: checkpoints = VerificationCheckpoint.objects.filter(photo_verification=attempt).all() VerificationStatus.add_status_from_checkpoints(checkpoints=checkpoints, user=attempt.user, status=status) # If this is re-verification then send the update email if checkpoints: user_id = attempt.user.id course_key = checkpoints[0].course_id related_assessment_location = checkpoints[0].checkpoint_location subject, message = _compose_message_reverification_email( course_key, user_id, related_assessment_location, status, request ) _send_email(user_id, subject, message) return HttpResponse("OK!")
def _compose_message_reverification_email( course_key, user_id, related_assessment_location, status, request ): # pylint: disable=invalid-name """ Compose subject and message for photo reverification email. Args: course_key(CourseKey): CourseKey object user_id(str): User Id related_assessment_location(str): Location of reverification XBlock photo_verification(QuerySet): Queryset of SoftwareSecure objects status(str): Approval status is_secure(Bool): Is running on secure protocol or not Returns: None if any error occurred else Tuple of subject and message strings """ try: usage_key = UsageKey.from_string(related_assessment_location) reverification_block = modulestore().get_item(usage_key) course = modulestore().get_course(course_key) redirect_url = get_redirect_url(course_key, usage_key.replace(course_key=course_key)) subject = "Re-verification Status" context = { "status": status, "course_name": course.display_name_with_default, "assessment": reverification_block.related_assessment } # Allowed attempts is 1 if not set on verification block allowed_attempts = reverification_block.attempts + 1 used_attempts = VerificationStatus.get_user_attempts(user_id, course_key, related_assessment_location) left_attempts = allowed_attempts - used_attempts is_attempt_allowed = left_attempts > 0 verification_open = True if reverification_block.due: verification_open = timezone.now() <= reverification_block.due context["left_attempts"] = left_attempts context["is_attempt_allowed"] = is_attempt_allowed context["verification_open"] = verification_open context["due_date"] = get_default_time_display(reverification_block.due) context['platform_name'] = settings.PLATFORM_NAME context["used_attempts"] = used_attempts context["allowed_attempts"] = allowed_attempts context["support_link"] = microsite.get_value('email_from_address', settings.CONTACT_EMAIL) re_verification_link = reverse( 'verify_student_incourse_reverify', args=( unicode(course_key), related_assessment_location ) ) context["course_link"] = request.build_absolute_uri(redirect_url) context["reverify_link"] = request.build_absolute_uri(re_verification_link) message = render_to_string('emails/reverification_processed.txt', context) log.info( "Sending email to User_Id=%s. Attempts left for this user are %s. " "Allowed attempts %s. " "Due Date %s", str(user_id), left_attempts, allowed_attempts, str(reverification_block.due) ) return subject, message # Catch all exception to avoid raising back to view except: # pylint: disable=bare-except log.exception("The email for re-verification sending failed for user_id %s", user_id)
def post(self, request, course_id, usage_id): """Submits the re-verification attempt to SoftwareSecure. Args: request(HttpRequest): HttpRequest object course_id(str): Course Id usage_id(str): Location of Reverification XBlock in courseware Returns: HttpResponse with status_code 400 if photo is missing or any error or redirect to the verification flow if initial verification doesn't exist otherwise HttpResponse with status code 200 """ # Check the in-course re-verification is enabled or not incourse_reverify_enabled = InCourseReverificationConfiguration.current().enabled if not incourse_reverify_enabled: raise Http404 user = request.user try: course_key = CourseKey.from_string(course_id) usage_key = UsageKey.from_string(usage_id).replace(course_key=course_key) except InvalidKeyError: raise Http404(u"Invalid course_key or usage_key") course = modulestore().get_course(course_key) if course is None: log.error(u"Invalid course id '%s'", course_id) return HttpResponseBadRequest(_("Invalid course location.")) checkpoint = VerificationCheckpoint.get_verification_checkpoint(course_key, usage_id) if checkpoint is None: log.error( u"Checkpoint is not defined. Could not submit verification attempt" u" for user '%s', course '%s' and checkpoint location '%s'.", request.user.id, course_key, usage_id ) return HttpResponseBadRequest(_("Invalid checkpoint location.")) init_verification = SoftwareSecurePhotoVerification.get_initial_verification(user) if not init_verification: return self._redirect_no_initial_verification(user, course_key) try: attempt = SoftwareSecurePhotoVerification.submit_faceimage( request.user, request.POST['face_image'], init_verification.photo_id_key ) checkpoint.add_verification_attempt(attempt) VerificationStatus.add_verification_status(checkpoint, user, "submitted") # emit the reverification event self._track_reverification_events( 'edx.bi.reverify.submitted', user.id, course_id, checkpoint.checkpoint_name ) redirect_url = get_redirect_url(course_key, usage_key) response = JsonResponse({'url': redirect_url}) except (ItemNotFoundError, NoPathToItem): log.warning(u"Could not find redirect URL for location %s in course %s", course_key, usage_key) redirect_url = reverse("courseware", args=(unicode(course_key),)) response = JsonResponse({'url': redirect_url}) except Http404 as expt: log.exception("Invalid location during photo verification.") response = HttpResponseBadRequest(expt.message) except IndexError: log.exception("Invalid image data during photo verification.") response = HttpResponseBadRequest(_("Invalid image data during photo verification.")) except Exception: # pylint: disable=broad-except log.exception("Could not submit verification attempt for user %s.", request.user.id) msg = _("Could not submit photos") response = HttpResponseBadRequest(msg) return response