"""
Student Views
"""
import datetime
import logging
import re
import uuid
import time
import json
from collections import defaultdict
from pytz import UTC
from django.conf import settings
from django.contrib.auth import logout, authenticate, login
from django.contrib.auth.models import User, AnonymousUser
from django.contrib.auth.decorators import login_required
from django.contrib.auth.views import password_reset_confirm
from django.contrib import messages
from django.core.context_processors import csrf
from django.core.mail import send_mail
from django.core.urlresolvers import reverse
from django.core.validators import validate_email, validate_slug, ValidationError
from django.db import IntegrityError, transaction
from django.http import (HttpResponse, HttpResponseBadRequest, HttpResponseForbidden,
Http404)
from django.shortcuts import redirect
from django.utils.translation import ungettext
from django_future.csrf import ensure_csrf_cookie
from django.utils.http import cookie_date, base36_to_int
from django.utils.translation import ugettext as _, get_language
from django.views.decorators.cache import never_cache
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_POST, require_GET
from django.db.models.signals import post_save
from django.dispatch import receiver
from django.template.response import TemplateResponse
from ratelimitbackend.exceptions import RateLimitException
from requests import HTTPError
from social.apps.django_app import utils as social_utils
from social.backends import oauth as social_oauth
from edxmako.shortcuts import render_to_response, render_to_string
from mako.exceptions import TopLevelLookupException
from course_modes.models import CourseMode
from student.models import (
Registration, UserProfile, PendingNameChange,
PendingEmailChange, CourseEnrollment, unique_id_for_user,
CourseEnrollmentAllowed, UserStanding, LoginFailures,
create_comments_service_user, PasswordHistory, UserSignupSource,
DashboardConfiguration)
from student.forms import PasswordResetFormNoActive
from verify_student.models import SoftwareSecurePhotoVerification, MidcourseReverificationWindow
from certificates.models import CertificateStatuses, certificate_status_for_student
from dark_lang.models import DarkLangConfig
from xmodule.modulestore.django import modulestore
from opaque_keys import InvalidKeyError
from opaque_keys.edx.locations import SlashSeparatedCourseKey
from opaque_keys.edx.locator import CourseLocator
from xmodule.modulestore import ModuleStoreEnum
from collections import namedtuple
from courseware.courses import get_courses, sort_by_announcement
from courseware.access import has_access
from django_comment_common.models import Role
from external_auth.models import ExternalAuthMap
import external_auth.views
from bulk_email.models import Optout, CourseAuthorization
import shoppingcart
from shoppingcart.models import DonationConfiguration
from user_api.models import UserPreference
from lang_pref import LANGUAGE_KEY
import track.views
import dogstats_wrapper as dog_stats_api
from util.db import commit_on_success_with_read_committed
from util.json_request import JsonResponse
from util.bad_request_rate_limiter import BadRequestRateLimiter
from microsite_configuration import microsite
from util.password_policy_validators import (
validate_password_length, validate_password_complexity,
validate_password_dictionary
)
from third_party_auth import pipeline, provider
from student.helpers import auth_pipeline_urls, set_logged_in_cookie
from xmodule.error_module import ErrorDescriptor
from shoppingcart.models import CourseRegistrationCode
import analytics
from eventtracking import tracker
log = logging.getLogger("edx.student")
AUDIT_LOG = logging.getLogger("audit")
ReverifyInfo = namedtuple('ReverifyInfo', 'course_id course_name course_number date status display') # pylint: disable=C0103
def csrf_token(context):
"""A csrf token that can be included in a form."""
token = context.get('csrf_token', '')
if token == 'NOTPROVIDED':
return ''
return (u'<div style="display:none"><input type="hidden"'
' name="csrfmiddlewaretoken" value="%s" /></div>' % (token))
# NOTE: This view is not linked to directly--it is called from
# branding/views.py:index(), which is cached for anonymous users.
# This means that it should always return the same thing for anon
# users. (in particular, no switching based on query params allowed)
def index(request, extra_context=None, user=AnonymousUser()):
"""
Render the edX main page.
extra_context is used to allow immediate display of certain modal windows, eg signup,
as used by external_auth.
"""
if extra_context is None:
extra_context = {}
# The course selection work is done in courseware.courses.
domain = settings.FEATURES.get('FORCE_UNIVERSITY_DOMAIN') # normally False
# do explicit check, because domain=None is valid
if domain is False:
domain = request.META.get('HTTP_HOST')
courses = get_courses(user, domain=domain)
courses = sort_by_announcement(courses)
context = {'courses': courses}
context.update(extra_context)
return render_to_response('index.html', context)
def embargo(_request):
"""
Render the embargo page.
Explains to the user why they are not able to access a particular embargoed course.
Tries to use the themed version, but fall back to the default if not found.
"""
try:
if settings.FEATURES["USE_CUSTOM_THEME"]:
return render_to_response("static_templates/theme-embargo.html")
except TopLevelLookupException:
pass
return render_to_response("static_templates/embargo.html")
def process_survey_link(survey_link, user):
"""
If {UNIQUE_ID} appears in the link, replace it with a unique id for the user.
Currently, this is sha1(user.username). Otherwise, return survey_link.
"""
return survey_link.format(UNIQUE_ID=unique_id_for_user(user))
def cert_info(user, course):
"""
Get the certificate info needed to render the dashboard section for the given
student and course. Returns a dictionary with keys:
'status': one of 'generating', 'ready', 'notpassing', 'processing', 'restricted'
'show_download_url': bool
'download_url': url, only present if show_download_url is True
'show_disabled_download_button': bool -- true if state is 'generating'
'show_survey_button': bool
'survey_url': url, only if show_survey_button is True
'grade': if status is not 'processing'
"""
if not course.may_certify():
return {}
return _cert_info(user, course, certificate_status_for_student(user, course.id))
def reverification_info(course_enrollment_pairs, user, statuses):
"""
Returns reverification-related information for *all* of user's enrollments whose
reverification status is in status_list
Args:
course_enrollment_pairs (list): list of (course, enrollment) tuples
user (User): the user whose information we want
statuses (list): a list of reverification statuses we want information for
example: ["must_reverify", "denied"]
Returns:
dictionary of lists: dictionary with one key per status, e.g.
dict["must_reverify"] = []
dict["must_reverify"] = [some information]
"""
reverifications = defaultdict(list)
for (course, enrollment) in course_enrollment_pairs:
info = single_course_reverification_info(user, course, enrollment)
if info:
reverifications[info.status].append(info)
# Sort the data by the reverification_end_date
for status in statuses:
if reverifications[status]:
reverifications[status].sort(key=lambda x: x.date)
return reverifications
def single_course_reverification_info(user, course, enrollment): # pylint: disable=invalid-name
"""Returns midcourse reverification-related information for user with enrollment in course.
If a course has an open re-verification window, and that user has a verified enrollment in
the course, we return a tuple with relevant information. Returns None if there is no info..
Args:
user (User): the user we want to get information for
course (Course): the course in which the student is enrolled
enrollment (CourseEnrollment): the object representing the type of enrollment user has in course
Returns:
ReverifyInfo: (course_id, course_name, course_number, date, status)
OR, None: None if there is no re-verification info for this enrollment
"""
window = MidcourseReverificationWindow.get_window(course.id, datetime.datetime.now(UTC))
# If there's no window OR the user is not verified, we don't get reverification info
if (not window) or (enrollment.mode != "verified"):
return None
return ReverifyInfo(
course.id, course.display_name, course.number,
window.end_date.strftime('%B %d, %Y %X %p'),
SoftwareSecurePhotoVerification.user_status(user, window)[0],
SoftwareSecurePhotoVerification.display_status(user, window),
)
def get_course_enrollment_pairs(user, course_org_filter, org_filter_out_set):
"""
Get the relevant set of (Course, CourseEnrollment) pairs to be displayed on
a student's dashboard.
"""
for enrollment in CourseEnrollment.enrollments_for_user(user):
store = modulestore()
with store.bulk_operations(enrollment.course_id):
course = store.get_course(enrollment.course_id)
if course and not isinstance(course, ErrorDescriptor):
# if we are in a Microsite, then filter out anything that is not
# attributed (by ORG) to that Microsite
if course_org_filter and course_org_filter != course.location.org:
continue
# Conversely, if we are not in a Microsite, then let's filter out any enrollments
# with courses attributed (by ORG) to Microsites
elif course.location.org in org_filter_out_set:
continue
yield (course, enrollment)
else:
log.error("User {0} enrolled in {2} course {1}".format(
user.username, enrollment.course_id, "broken" if course else "non-existent"
))
def _cert_info(user, course, cert_status):
"""
Implements the logic for cert_info -- split out for testing.
"""
# simplify the status for the template using this lookup table
template_state = {
CertificateStatuses.generating: 'generating',
CertificateStatuses.regenerating: 'generating',
CertificateStatuses.downloadable: 'ready',
CertificateStatuses.notpassing: 'notpassing',
CertificateStatuses.restricted: 'restricted',
}
default_status = 'processing'
default_info = {'status': default_status,
'show_disabled_download_button': False,
'show_download_url': False,
'show_survey_button': False,
}
if cert_status is None:
return default_info
is_hidden_status = cert_status['status'] in ('unavailable', 'processing', 'generating', 'notpassing')
if course.certificates_display_behavior == 'early_no_info' and is_hidden_status:
return None
status = template_state.get(cert_status['status'], default_status)
status_dict = {
'status': status,
'show_download_url': status == 'ready',
'show_disabled_download_button': status == 'generating',
'mode': cert_status.get('mode', None)
}
if (status in ('generating', 'ready', 'notpassing', 'restricted') and
course.end_of_course_survey_url is not None):
status_dict.update({
'show_survey_button': True,
'survey_url': process_survey_link(course.end_of_course_survey_url, user)})
else:
status_dict['show_survey_button'] = False
if status == 'ready':
if 'download_url' not in cert_status:
log.warning("User %s has a downloadable cert for %s, but no download url",
user.username, course.id)
return default_info
else:
status_dict['download_url'] = cert_status['download_url']
if status in ('generating', 'ready', 'notpassing', 'restricted'):
if 'grade' not in cert_status:
# Note: as of 11/20/2012, we know there are students in this state-- cs169.1x,
# who need to be regraded (we weren't tracking 'notpassing' at first).
# We can add a log.warning here once we think it shouldn't happen.
return default_info
else:
status_dict['grade'] = cert_status['grade']
return status_dict
@ensure_csrf_cookie
def signin_user(request):
"""
This view will display the non-modal login form
"""
if (settings.FEATURES['AUTH_USE_CERTIFICATES'] and
external_auth.views.ssl_get_cert_from_request(request)):
# SSL login doesn't require a view, so redirect
# branding and allow that to process the login if it
# is enabled and the header is in the request.
return external_auth.views.redirect_with_get('root', request.GET)
if settings.FEATURES.get('AUTH_USE_CAS'):
# If CAS is enabled, redirect auth handling to there
return redirect(reverse('cas-login'))
if request.user.is_authenticated():
return redirect(reverse('dashboard'))
course_id = request.GET.get('course_id')
context = {
'course_id': course_id,
'enrollment_action': request.GET.get('enrollment_action'),
# Bool injected into JS to submit form if we're inside a running third-
# party auth pipeline; distinct from the actual instance of the running
# pipeline, if any.
'pipeline_running': 'true' if pipeline.running(request) else 'false',
'pipeline_url': auth_pipeline_urls(pipeline.AUTH_ENTRY_LOGIN, course_id=course_id),
'platform_name': microsite.get_value(
'platform_name',
settings.PLATFORM_NAME
),
}
return render_to_response('login.html', context)
@ensure_csrf_cookie
def register_user(request, extra_context=None):
"""
This view will display the non-modal registration form
"""
if request.user.is_authenticated():
return redirect(reverse('dashboard'))
if settings.FEATURES.get('AUTH_USE_CERTIFICATES_IMMEDIATE_SIGNUP'):
# Redirect to branding to process their certificate if SSL is enabled
# and registration is disabled.
return external_auth.views.redirect_with_get('root', request.GET)
course_id = request.GET.get('course_id')
context = {
'course_id': course_id,
'email': '',
'enrollment_action': request.GET.get('enrollment_action'),
'name': '',
'running_pipeline': None,
'pipeline_urls': auth_pipeline_urls(pipeline.AUTH_ENTRY_REGISTER, course_id=course_id),
'platform_name': microsite.get_value(
'platform_name',
settings.PLATFORM_NAME
),
'selected_provider': '',
'username': '',
}
if extra_context is not None:
context.update(extra_context)
if context.get("extauth_domain", '').startswith(external_auth.views.SHIBBOLETH_DOMAIN_PREFIX):
return render_to_response('register-shib.html', context)
# If third-party auth is enabled, prepopulate the form with data from the
# selected provider.
if microsite.get_value('ENABLE_THIRD_PARTY_AUTH', settings.FEATURES.get('ENABLE_THIRD_PARTY_AUTH')) and pipeline.running(request):
running_pipeline = pipeline.get(request)
current_provider = provider.Registry.get_by_backend_name(running_pipeline.get('backend'))
overrides = current_provider.get_register_form_data(running_pipeline.get('kwargs'))
overrides['running_pipeline'] = running_pipeline
overrides['selected_provider'] = current_provider.NAME
context.update(overrides)
return render_to_response('register.html', context)
def complete_course_mode_info(course_id, enrollment, modes=None):
"""
We would like to compute some more information from the given course modes
and the user's current enrollment
Returns the given information:
- whether to show the course upsell information
- numbers of days until they can't upsell anymore
"""
if modes is None:
modes = CourseMode.modes_for_course_dict(course_id)
mode_info = {'show_upsell': False, 'days_for_upsell': None}
# we want to know if the user is already verified and if verified is an
# option
if 'verified' in modes and enrollment.mode != 'verified':
mode_info['show_upsell'] = True
# if there is an expiration date, find out how long from now it is
if modes['verified'].expiration_datetime:
today = datetime.datetime.now(UTC).date()
mode_info['days_for_upsell'] = (modes['verified'].expiration_datetime.date() - today).days
return mode_info
def is_course_blocked(request, redeemed_registration_codes, course_key):
"""Checking either registration is blocked or not ."""
blocked = False
for redeemed_registration in redeemed_registration_codes:
# registration codes may be generated via Bulk Purchase Scenario
# we have to check only for the invoice generated registration codes
# that their invoice is valid or not
if redeemed_registration.invoice:
if not getattr(redeemed_registration.invoice, 'is_valid'):
blocked = True
# disabling email notifications for unpaid registration courses
Optout.objects.get_or_create(user=request.user, course_id=course_key)
log.info(u"User {0} ({1}) opted out of receiving emails from course {2}".format(request.user.username, request.user.email, course_key))
track.views.server_track(request, "change-email1-settings", {"receive_emails": "no", "course": course_key.to_deprecated_string()}, page='dashboard')
break
return blocked
@login_required
@ensure_csrf_cookie
def dashboard(request):
user = request.user
# for microsites, we want to filter and only show enrollments for courses within
# the microsites 'ORG'
course_org_filter = microsite.get_value('course_org_filter')
# Let's filter out any courses in an "org" that has been declared to be
# in a Microsite
org_filter_out_set = microsite.get_all_orgs()
# remove our current Microsite from the "filter out" list, if applicable
if course_org_filter:
org_filter_out_set.remove(course_org_filter)
# Build our (course, enrollment) list for the user, but ignore any courses that no
# longer exist (because the course IDs have changed). Still, we don't delete those
# enrollments, because it could have been a data push snafu.
course_enrollment_pairs = list(get_course_enrollment_pairs(user, course_org_filter, org_filter_out_set))
# sort the enrollment pairs by the enrollment date
course_enrollment_pairs.sort(key=lambda x: x[1].created, reverse=True)
# Retrieve the course modes for each course
course_modes_by_course = {
course.id: CourseMode.modes_for_course_dict(course.id)
for course, __ in course_enrollment_pairs
}
# Check to see if the student has recently enrolled in a course.
# If so, display a notification message confirming the enrollment.
enrollment_message = _create_recent_enrollment_message(
course_enrollment_pairs, course_modes_by_course
)
course_optouts = Optout.objects.filter(user=user).values_list('course_id', flat=True)
message = ""
if not user.is_active:
message = render_to_string(
'registration/activate_account_notice.html',
{'email': user.email, 'platform_name': settings.PLATFORM_NAME}
)
# Global staff can see what courses errored on their dashboard
staff_access = False
errored_courses = {}
if has_access(user, 'staff', 'global'):
# Show any courses that errored on load
staff_access = True
errored_courses = modulestore().get_errored_courses()
show_courseware_links_for = frozenset(course.id for course, _enrollment in course_enrollment_pairs
if has_access(request.user, 'load', course))
# Construct a dictionary of course mode information
# used to render the course list. We re-use the course modes dict
# we loaded earlier to avoid hitting the database.
course_mode_info = {
course.id: complete_course_mode_info(
course.id, enrollment,
modes=course_modes_by_course[course.id]
)
for course, enrollment in course_enrollment_pairs
}
cert_statuses = {
course.id: cert_info(request.user, course)
for course, _enrollment in course_enrollment_pairs
}
# only show email settings for Mongo course and when bulk email is turned on
show_email_settings_for = frozenset(
course.id for course, _enrollment in course_enrollment_pairs if (
settings.FEATURES['ENABLE_INSTRUCTOR_EMAIL'] and
modulestore().get_modulestore_type(course.id) != ModuleStoreEnum.Type.xml and
CourseAuthorization.instructor_email_enabled(course.id)
)
)
# Verification Attempts
# Used to generate the "you must reverify for course x" banner
verification_status, verification_msg = SoftwareSecurePhotoVerification.user_status(user)
# Gets data for midcourse reverifications, if any are necessary or have failed
statuses = ["approved", "denied", "pending", "must_reverify"]
reverifications = reverification_info(course_enrollment_pairs, user, statuses)
show_refund_option_for = frozenset(course.id for course, _enrollment in course_enrollment_pairs
if _enrollment.refundable())
block_courses = frozenset(course.id for course, enrollment in course_enrollment_pairs
if is_course_blocked(request, CourseRegistrationCode.objects.filter(course_id=course.id, registrationcoderedemption__redeemed_by=request.user), course.id))
enrolled_courses_either_paid = frozenset(course.id for course, _enrollment in course_enrollment_pairs
if _enrollment.is_paid_course())
# get info w.r.t ExternalAuthMap
external_auth_map = None
try:
external_auth_map = ExternalAuthMap.objects.get(user=user)
except ExternalAuthMap.DoesNotExist:
pass
# If there are *any* denied reverifications that have not been toggled off,
# we'll display the banner
denied_banner = any(item.display for item in reverifications["denied"])
language_options = DarkLangConfig.current().released_languages_list
# add in the default language if it's not in the list of released languages
if settings.LANGUAGE_CODE not in language_options:
language_options.append(settings.LANGUAGE_CODE)
# Re-alphabetize language options
language_options.sort()
# try to get the prefered language for the user
cur_pref_lang_code = UserPreference.get_preference(request.user, LANGUAGE_KEY)
# try and get the current language of the user
cur_lang_code = get_language()
if cur_pref_lang_code and cur_pref_lang_code in settings.LANGUAGE_DICT:
# if the user has a preference, get the name from the code
current_language = settings.LANGUAGE_DICT[cur_pref_lang_code]
elif cur_lang_code in settings.LANGUAGE_DICT:
# if the user's browser is showing a particular language,
# use that as the current language
current_language = settings.LANGUAGE_DICT[cur_lang_code]
else:
# otherwise, use the default language
current_language = settings.LANGUAGE_DICT[settings.LANGUAGE_CODE]
context = {
'enrollment_message': enrollment_message,
'course_enrollment_pairs': course_enrollment_pairs,
'course_optouts': course_optouts,
'message': message,
'external_auth_map': external_auth_map,
'staff_access': staff_access,
'errored_courses': errored_courses,
'show_courseware_links_for': show_courseware_links_for,
'all_course_modes': course_mode_info,
'cert_statuses': cert_statuses,
'show_email_settings_for': show_email_settings_for,
'reverifications': reverifications,
'verification_status': verification_status,
'verification_msg': verification_msg,
'show_refund_option_for': show_refund_option_for,
'block_courses': block_courses,
'denied_banner': denied_banner,
'billing_email': settings.PAYMENT_SUPPORT_EMAIL,
'language_options': language_options,
'current_language': current_language,
'current_language_code': cur_lang_code,
'user': user,
'duplicate_provider': None,
'logout_url': reverse(logout_user),
'platform_name': settings.PLATFORM_NAME,
'enrolled_courses_either_paid': enrolled_courses_either_paid,
'provider_states': [],
}
if microsite.get_value('ENABLE_THIRD_PARTY_AUTH', settings.FEATURES.get('ENABLE_THIRD_PARTY_AUTH')):
context['duplicate_provider'] = pipeline.get_duplicate_provider(messages.get_messages(request))
context['provider_user_states'] = pipeline.get_provider_user_states(user)
return render_to_response('dashboard.html', context)
def _create_recent_enrollment_message(course_enrollment_pairs, course_modes):
"""Builds a recent course enrollment message
Constructs a new message template based on any recent course enrollments for the student.
Args:
course_enrollment_pairs (list): A list of tuples containing courses, and the associated enrollment information.
course_modes (dict): Mapping of course ID's to course mode dictionaries.
Returns:
A string representing the HTML message output from the message template.
None if there are no recently enrolled courses.
"""
recently_enrolled_courses = _get_recently_enrolled_courses(course_enrollment_pairs)
if recently_enrolled_courses:
messages = [
{
"course_id": course.id,
"course_name": course.display_name,
"allow_donation": _allow_donation(course_modes, course.id)
}
for course in recently_enrolled_courses
]
return render_to_string(
'enrollment/course_enrollment_message.html',
{'course_enrollment_messages': messages, 'platform_name': settings.PLATFORM_NAME}
)
def _get_recently_enrolled_courses(course_enrollment_pairs):
"""Checks to see if the student has recently enrolled in courses.
Checks to see if any of the enrollments in the course_enrollment_pairs have been recently created and activated.
Args:
course_enrollment_pairs (list): A list of tuples containing courses, and the associated enrollment information.
Returns:
A list of courses
"""
seconds = DashboardConfiguration.current().recent_enrollment_time_delta
time_delta = (datetime.datetime.now(UTC) - datetime.timedelta(seconds=seconds))
return [
course for course, enrollment in course_enrollment_pairs
# If the enrollment has no created date, we are explicitly excluding the course
# from the list of recent enrollments.
if enrollment.is_active and enrollment.created > time_delta
]
def _allow_donation(course_modes, course_id):
"""Determines if the dashboard will request donations for the given course.
Check if donations are configured for the platform, and if the current course is accepting donations.
Args:
course_modes (dict): Mapping of course ID's to course mode dictionaries.
course_id (str): The unique identifier for the course.
Returns:
True if the course is allowing donations.
"""
donations_enabled = DonationConfiguration.current().enabled
is_verified_mode = CourseMode.has_verified_mode(course_modes[course_id])
has_payment_option = CourseMode.has_payment_options(course_id)
return donations_enabled and not is_verified_mode and not has_payment_option
def try_change_enrollment(request):
"""
This method calls change_enrollment if the necessary POST
parameters are present, but does not return anything in most cases. It
simply logs the result or exception. This is usually
called after a registration or login, as secondary action.
It should not interrupt a successful registration or login.
"""
if 'enrollment_action' in request.POST:
try:
enrollment_response = change_enrollment(request)
# There isn't really a way to display the results to the user, so we just log it
# We expect the enrollment to be a success, and will show up on the dashboard anyway
log.info(
"Attempted to automatically enroll after login. Response code: {0}; response body: {1}".format(
enrollment_response.status_code,
enrollment_response.content
)
)
# Hack: since change_enrollment delivers its redirect_url in the content
# of its response, we check here that only the 200 codes with content
# will return redirect_urls.
if enrollment_response.status_code == 200 and enrollment_response.content != '':
return enrollment_response.content
except Exception as exc: # pylint: disable=broad-except
log.exception("Exception automatically enrolling after login: %s", exc)
@require_POST
@commit_on_success_with_read_committed
def change_enrollment(request, check_access=True):
"""
Modify the enrollment status for the logged-in user.
The request parameter must be a POST request (other methods return 405)
that specifies course_id and enrollment_action parameters. If course_id or
enrollment_action is not specified, if course_id is not valid, if
enrollment_action is something other than "enroll" or "unenroll", if
enrollment_action is "enroll" and enrollment is closed for the course, or
if enrollment_action is "unenroll" and the user is not enrolled in the
course, a 400 error will be returned. If the user is not logged in, 403
will be returned; it is important that only this case return 403 so the
front end can redirect the user to a registration or login page when this
happens. This function should only be called from an AJAX request or
as a post-login/registration helper, so the error messages in the responses
should never actually be user-visible.
Args:
request (`Request`): The Django request object
Keyword Args:
check_access (boolean): If True, we check that an accessible course actually
exists for the given course_key before we enroll the student.
The default is set to False to avoid breaking legacy code or
code with non-standard flows (ex. beta tester invitations), but
for any standard enrollment flow you probably want this to be True.
Returns:
Response
"""
# Get the user
user = request.user
# Ensure the user is authenticated
if not user.is_authenticated():
return HttpResponseForbidden()
# Ensure we received a course_id
action = request.POST.get("enrollment_action")
if 'course_id' not in request.POST:
return HttpResponseBadRequest(_("Course id not specified"))
try:
course_id = SlashSeparatedCourseKey.from_deprecated_string(request.POST.get("course_id"))
except InvalidKeyError:
log.warning(
"User {username} tried to {action} with invalid course id: {course_id}".format(
username=user.username,
action=action,
course_id=request.POST.get("course_id")
)
)
return HttpResponseBadRequest(_("Invalid course id"))
if action == "enroll":
# Make sure the course exists
# We don't do this check on unenroll, or a bad course id can't be unenrolled from
if not modulestore().has_course(course_id):
log.warning("User {0} tried to enroll in non-existent course {1}"
.format(user.username, course_id))
return HttpResponseBadRequest(_("Course id is invalid"))
available_modes = CourseMode.modes_for_course_dict(course_id)
# Check that auto enrollment is allowed for this course
# (= the course is NOT behind a paywall)
if CourseMode.can_auto_enroll(course_id):
# Enroll the user using the default mode (honor)
# We're assuming that users of the course enrollment table
# will NOT try to look up the course enrollment model
# by its slug. If they do, it's possible (based on the state of the database)
# for no such model to exist, even though we've set the enrollment type
# to "honor".
try:
CourseEnrollment.enroll(user, course_id, check_access=check_access)
except Exception:
return HttpResponseBadRequest(_("Could not enroll"))
# If we have more than one course mode or professional ed is enabled,
# then send the user to the choose your track page.
# (In the case of professional ed, this will redirect to a page that
# funnels users directly into the verification / payment flow)
if CourseMode.has_verified_mode(available_modes):
return HttpResponse(
reverse("course_modes_choose", kwargs={'course_id': unicode(course_id)})
)
# Otherwise, there is only one mode available (the default)
return HttpResponse()
elif action == "add_to_cart":
# Pass the request handling to shoppingcart.views
# The view in shoppingcart.views performs error handling and logs different errors. But this elif clause
# is only used in the "auto-add after user reg/login" case, i.e. it's always wrapped in try_change_enrollment.
# This means there's no good way to display error messages to the user. So we log the errors and send
# the user to the shopping cart page always, where they can reasonably discern the status of their cart,
# whether things got added, etc
shoppingcart.views.add_course_to_cart(request, course_id.to_deprecated_string())
return HttpResponse(
reverse("shoppingcart.views.show_cart")
)
elif action == "unenroll":
if not CourseEnrollment.is_enrolled(user, course_id):
return HttpResponseBadRequest(_("You are not enrolled in this course"))
CourseEnrollment.unenroll(user, course_id)
return HttpResponse()
else:
return HttpResponseBadRequest(_("Enrollment action is invalid"))
# TODO: This function is kind of gnarly/hackish/etc and is only used in one location.
# It'd be awesome if we could get rid of it; manually parsing course_id strings form larger strings
# seems Probably Incorrect
def _parse_course_id_from_string(input_str):
"""
Helper function to determine if input_str (typically the queryparam 'next') contains a course_id.
@param input_str:
@return: the course_id if found, None if not
"""
m_obj = re.match(r'^/courses/{}'.format(settings.COURSE_ID_PATTERN), input_str)
if m_obj:
return SlashSeparatedCourseKey.from_deprecated_string(m_obj.group('course_id'))
return None
def _get_course_enrollment_domain(course_id):
"""
Helper function to get the enrollment domain set for a course with id course_id
@param course_id:
@return:
"""
course = modulestore().get_course(course_id)
if course is None:
return None
return course.enrollment_domain
@never_cache
@ensure_csrf_cookie
def accounts_login(request):
"""
This view is mainly used as the redirect from the @login_required decorator. I don't believe that
the login path linked from the homepage uses it.
"""
if settings.FEATURES.get('AUTH_USE_CAS'):
return redirect(reverse('cas-login'))
if settings.FEATURES['AUTH_USE_CERTIFICATES']:
# SSL login doesn't require a view, so login
# directly here
return external_auth.views.ssl_login(request)
# see if the "next" parameter has been set, whether it has a course context, and if so, whether
# there is a course-specific place to redirect
redirect_to = request.GET.get('next')
if redirect_to:
course_id = _parse_course_id_from_string(redirect_to)
if course_id and _get_course_enrollment_domain(course_id):
return external_auth.views.course_specific_login(request, course_id.to_deprecated_string())
context = {
'pipeline_running': 'false',
'pipeline_url': auth_pipeline_urls(pipeline.AUTH_ENTRY_LOGIN, redirect_url=redirect_to),
'platform_name': settings.PLATFORM_NAME,
}
return render_to_response('login.html', context)
# Need different levels of logging
@ensure_csrf_cookie
def login_user(request, error=""): # pylint: disable-msg=too-many-statements,unused-argument
"""AJAX request to log in the user."""
backend_name = None
email = None
password = None
redirect_url = None
response = None
running_pipeline = None
third_party_auth_requested = microsite.get_value('ENABLE_THIRD_PARTY_AUTH', settings.FEATURES.get('ENABLE_THIRD_PARTY_AUTH')) and pipeline.running(request)
third_party_auth_successful = False
trumped_by_first_party_auth = bool(request.POST.get('email')) or bool(request.POST.get('password'))
user = None
if third_party_auth_requested and not trumped_by_first_party_auth:
# The user has already authenticated via third-party auth and has not
# asked to do first party auth by supplying a username or password. We
# now want to put them through the same logging and cookie calculation
# logic as with first-party auth.
running_pipeline = pipeline.get(request)
username = running_pipeline['kwargs'].get('username')
backend_name = running_pipeline['backend']
requested_provider = provider.Registry.get_by_backend_name(backend_name)
try:
user = pipeline.get_authenticated_user(username, backend_name)
third_party_auth_successful = True
except User.DoesNotExist:
AUDIT_LOG.warning(
u'Login failed - user with username {username} has no social auth with backend_name {backend_name}'.format(
username=username, backend_name=backend_name))
return HttpResponseBadRequest(
_("You've successfully logged into your {provider_name} account, but this account isn't linked with an {platform_name} account yet.").format(
platform_name=settings.PLATFORM_NAME, provider_name=requested_provider.NAME
)
+ "<br/><br/>" +
_("Use your {platform_name} username and password to log into {platform_name} below, "
"and then link your {platform_name} account with {provider_name} from your dashboard.").format(
platform_name=settings.PLATFORM_NAME, provider_name=requested_provider.NAME
)
+ "<br/><br/>" +
_("If you don't have an {platform_name} account yet, click <strong>Register Now</strong> at the top of the page.").format(
platform_name=settings.PLATFORM_NAME
),
content_type="text/plain",
status=401
)
else:
if 'email' not in request.POST or 'password' not in request.POST:
return JsonResponse({
"success": False,
"value": _('There was an error receiving your login information. Please email us.'), # TODO: User error message
}) # TODO: this should be status code 400 # pylint: disable=fixme
email = request.POST['email']
password = request.POST['password']
try:
user = User.objects.get(email=email)
except User.DoesNotExist:
if settings.FEATURES['SQUELCH_PII_IN_LOGS']:
AUDIT_LOG.warning(u"Login failed - Unknown user email")
else:
AUDIT_LOG.warning(u"Login failed - Unknown user email: {0}".format(email))
# check if the user has a linked shibboleth account, if so, redirect the user to shib-login
# This behavior is pretty much like what gmail does for shibboleth. Try entering some @stanford.edu
# address into the Gmail login.
if settings.FEATURES.get('AUTH_USE_SHIB') and user:
try:
eamap = ExternalAuthMap.objects.get(user=user)
if eamap.external_domain.startswith(external_auth.views.SHIBBOLETH_DOMAIN_PREFIX):
return JsonResponse({
"success": False,
"redirect": reverse('shib-login'),
}) # TODO: this should be status code 301 # pylint: disable=fixme
except ExternalAuthMap.DoesNotExist:
# This is actually the common case, logging in user without external linked login
AUDIT_LOG.info("User %s w/o external auth attempting login", user)
# see if account has been locked out due to excessive login failures
user_found_by_email_lookup = user
if user_found_by_email_lookup and LoginFailures.is_feature_enabled():
if LoginFailures.is_user_locked_out(user_found_by_email_lookup):
return JsonResponse({
"success": False,
"value": _('This account has been temporarily locked due to excessive login failures. Try again later.'),
}) # TODO: this should be status code 429 # pylint: disable=fixme
# see if the user must reset his/her password due to any policy settings
if PasswordHistory.should_user_reset_password_now(user_found_by_email_lookup):
return JsonResponse({
"success": False,
"value": _('Your password has expired due to password policy on this account. You must '
'reset your password before you can log in again. Please click the '
'"Forgot Password" link on this page to reset your password before logging in again.'),
}) # TODO: this should be status code 403 # pylint: disable=fixme
# if the user doesn't exist, we want to set the username to an invalid
# username so that authentication is guaranteed to fail and we can take
# advantage of the ratelimited backend
username = user.username if user else ""
if not third_party_auth_successful:
try:
user = authenticate(username=username, password=password, request=request)
# this occurs when there are too many attempts from the same IP address
except RateLimitException:
return JsonResponse({
"success": False,
"value": _('Too many failed login attempts. Try again later.'),
}) # TODO: this should be status code 429 # pylint: disable=fixme
if user is None:
# tick the failed login counters if the user exists in the database
if user_found_by_email_lookup and LoginFailures.is_feature_enabled():
LoginFailures.increment_lockout_counter(user_found_by_email_lookup)
# if we didn't find this username earlier, the account for this email
# doesn't exist, and doesn't have a corresponding password
if username != "":
if settings.FEATURES['SQUELCH_PII_IN_LOGS']:
loggable_id = user_found_by_email_lookup.id if user_found_by_email_lookup else "<unknown>"
AUDIT_LOG.warning(u"Login failed - password for user.id: {0} is invalid".format(loggable_id))
else:
AUDIT_LOG.warning(u"Login failed - password for {0} is invalid".format(email))
return JsonResponse({
"success": False,
"value": _('Email or password is incorrect.'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
# successful login, clear failed login attempts counters, if applicable
if LoginFailures.is_feature_enabled():
LoginFailures.clear_lockout_counter(user)
# Track the user's sign in
if settings.FEATURES.get('SEGMENT_IO_LMS') and hasattr(settings, 'SEGMENT_IO_LMS_KEY'):
tracking_context = tracker.get_tracker().resolve_context()
analytics.identify(user.id, {
'email': email,
'username': username,
})
analytics.track(
user.id,
"edx.bi.user.account.authenticated",
{
'category': "conversion",
'label': request.POST.get('course_id'),
'provider': None
},
context={
'Google Analytics': {
'clientId': tracking_context.get('client_id')
}
}
)
if user is not None and user.is_active:
try:
# We do not log here, because we have a handler registered
# to perform logging on successful logins.
login(request, user)
if request.POST.get('remember') == 'true':
request.session.set_expiry(604800)
log.debug("Setting user session to never expire")
else:
request.session.set_expiry(0)
except Exception as exc: # pylint: disable=broad-except
AUDIT_LOG.critical("Login failed - Could not create session. Is memcached running?")
log.critical("Login failed - Could not create session. Is memcached running?")
log.exception(exc)
raise
redirect_url = try_change_enrollment(request)
if third_party_auth_successful:
redirect_url = pipeline.get_complete_url(backend_name)
response = JsonResponse({
"success": True,
"redirect_url": redirect_url,
})
# Ensure that the external marketing site can
# detect that the user is logged in.
return set_logged_in_cookie(request, response)
if settings.FEATURES['SQUELCH_PII_IN_LOGS']:
AUDIT_LOG.warning(u"Login failed - Account not active for user.id: {0}, resending activation".format(user.id))
else:
AUDIT_LOG.warning(u"Login failed - Account not active for user {0}, resending activation".format(username))
reactivation_email_for_user(user)
not_activated_msg = _("This account has not been activated. We have sent another activation message. Please check your e-mail for the activation instructions.")
return JsonResponse({
"success": False,
"value": not_activated_msg,
}) # TODO: this should be status code 400 # pylint: disable=fixme
@require_POST
@social_utils.strategy("social:complete")
def login_oauth_token(request, backend):
"""
Authenticate the client using an OAuth access token by using the token to
retrieve information from a third party and matching that information to an
existing user.
"""
backend = request.social_strategy.backend
if isinstance(backend, social_oauth.BaseOAuth1) or isinstance(backend, social_oauth.BaseOAuth2):
if "access_token" in request.POST:
# Tell third party auth pipeline that this is an API call
request.session[pipeline.AUTH_ENTRY_KEY] = pipeline.AUTH_ENTRY_API
user = None
try:
user = backend.do_auth(request.POST["access_token"])
except HTTPError:
pass
# do_auth can return a non-User object if it fails
if user and isinstance(user, User):
return JsonResponse(status=204)
else:
# Ensure user does not re-enter the pipeline
request.social_strategy.clean_partial_pipeline()
return JsonResponse({"error": "invalid_token"}, status=401)
else:
return JsonResponse({"error": "invalid_request"}, status=400)
raise Http404
@ensure_csrf_cookie
def logout_user(request):
"""
HTTP request to log out the user. Redirects to marketing page.
Deletes both the CSRF and sessionid cookies so the marketing
site can determine the logged in state of the user
"""
# We do not log here, because we have a handler registered
# to perform logging on successful logouts.
logout(request)
if settings.FEATURES.get('AUTH_USE_CAS'):
target = reverse('cas-logout')
else:
target = '/'
response = redirect(target)
response.delete_cookie(
settings.EDXMKTG_COOKIE_NAME,
path='/', domain=settings.SESSION_COOKIE_DOMAIN,
)
return response
@require_GET
@login_required
@ensure_csrf_cookie
def manage_user_standing(request):
"""
Renders the view used to manage user standing. Also displays a table
of user accounts that have been disabled and who disabled them.
"""
if not request.user.is_staff:
raise Http404
all_disabled_accounts = UserStanding.objects.filter(
account_status=UserStanding.ACCOUNT_DISABLED
)
all_disabled_users = [standing.user for standing in all_disabled_accounts]
headers = ['username', 'account_changed_by']
rows = []
for user in all_disabled_users:
row = [user.username, user.standing.all()[0].changed_by]
rows.append(row)
context = {'headers': headers, 'rows': rows}
return render_to_response("manage_user_standing.html", context)
@require_POST
@login_required
@ensure_csrf_cookie
def disable_account_ajax(request):
"""
Ajax call to change user standing. Endpoint of the form
in manage_user_standing.html
"""
if not request.user.is_staff:
raise Http404
username = request.POST.get('username')
context = {}
if username is None or username.strip() == '':
context['message'] = _('Please enter a username')
return JsonResponse(context, status=400)
account_action = request.POST.get('account_action')
if account_action is None:
context['message'] = _('Please choose an option')
return JsonResponse(context, status=400)
username = username.strip()
try:
user = User.objects.get(username=username)
except User.DoesNotExist:
context['message'] = _("User with username {} does not exist").format(username)
return JsonResponse(context, status=400)
else:
user_account, _success = UserStanding.objects.get_or_create(
user=user, defaults={'changed_by': request.user},
)
if account_action == 'disable':
user_account.account_status = UserStanding.ACCOUNT_DISABLED
context['message'] = _("Successfully disabled {}'s account").format(username)
log.info("{} disabled {}'s account".format(request.user, username))
elif account_action == 'reenable':
user_account.account_status = UserStanding.ACCOUNT_ENABLED
context['message'] = _("Successfully reenabled {}'s account").format(username)
log.info("{} reenabled {}'s account".format(request.user, username))
else:
context['message'] = _("Unexpected account status")
return JsonResponse(context, status=400)
user_account.changed_by = request.user
user_account.standing_last_changed_at = datetime.datetime.now(UTC)
user_account.save()
return JsonResponse(context)
@login_required
@ensure_csrf_cookie
def change_setting(request):
"""JSON call to change a profile setting: Right now, location"""
# TODO (vshnayder): location is no longer used
u_prof = UserProfile.objects.get(user=request.user) # request.user.profile_cache
if 'location' in request.POST:
u_prof.location = request.POST['location']
u_prof.save()
return JsonResponse({
"success": True,
"location": u_prof.location,
})
class AccountValidationError(Exception):
def __init__(self, message, field):
super(AccountValidationError, self).__init__(message)
self.field = field
@receiver(post_save, sender=User)
def user_signup_handler(sender, **kwargs): # pylint: disable=W0613
"""
handler that saves the user Signup Source
when the user is created
"""
if 'created' in kwargs and kwargs['created']:
site = microsite.get_value('SITE_NAME')
if site:
user_signup_source = UserSignupSource(user=kwargs['instance'], site=site)
user_signup_source.save()
log.info(u'user {} originated from a white labeled "Microsite"'.format(kwargs['instance'].id))
def _do_create_account(post_vars, extended_profile=None):
"""
Given cleaned post variables, create the User and UserProfile objects, as well as the
registration for this user.
Returns a tuple (User, UserProfile, Registration).
Note: this function is also used for creating test users.
"""
user = User(username=post_vars['username'],
email=post_vars['email'],
is_active=False)
user.set_password(post_vars['password'])
registration = Registration()
# TODO: Rearrange so that if part of the process fails, the whole process fails.
# Right now, we can have e.g. no registration e-mail sent out and a zombie account
try:
user.save()
except IntegrityError:
# Figure out the cause of the integrity error
if len(User.objects.filter(username=post_vars['username'])) > 0:
raise AccountValidationError(
_("An account with the Public Username '{username}' already exists.").format(username=post_vars['username']),
field="username"
)
elif len(User.objects.filter(email=post_vars['email'])) > 0:
raise AccountValidationError(
_("An account with the Email '{email}' already exists.").format(email=post_vars['email']),
field="email"
)
else:
raise
# add this account creation to password history
# NOTE, this will be a NOP unless the feature has been turned on in configuration
password_history_entry = PasswordHistory()
password_history_entry.create(user)
registration.register(user)
profile = UserProfile(user=user)
profile.name = post_vars['name']
profile.level_of_education = post_vars.get('level_of_education')
profile.gender = post_vars.get('gender')
profile.mailing_address = post_vars.get('mailing_address')
profile.city = post_vars.get('city')
profile.country = post_vars.get('country')
profile.goals = post_vars.get('goals')
# add any extended profile information in the denormalized 'meta' field in the profile
if extended_profile:
profile.meta = json.dumps(extended_profile)
try:
profile.year_of_birth = int(post_vars['year_of_birth'])
except (ValueError, KeyError):
# If they give us garbage, just ignore it instead
# of asking them to put an integer.
profile.year_of_birth = None
try:
profile.save()
except Exception: # pylint: disable=broad-except
log.exception("UserProfile creation failed for user {id}.".format(id=user.id))
raise
UserPreference.set_preference(user, LANGUAGE_KEY, get_language())
return (user, profile, registration)
@ensure_csrf_cookie
def create_account(request, post_override=None): # pylint: disable-msg=too-many-statements
"""
JSON call to create new edX account.
Used by form in signup_modal.html, which is included into navigation.html
"""
js = {'success': False} # pylint: disable-msg=invalid-name
post_vars = post_override if post_override else request.POST
# allow for microsites to define their own set of required/optional/hidden fields
extra_fields = microsite.get_value(
'REGISTRATION_EXTRA_FIELDS',
getattr(settings, 'REGISTRATION_EXTRA_FIELDS', {})
)
if microsite.get_value('ENABLE_THIRD_PARTY_AUTH', settings.FEATURES.get('ENABLE_THIRD_PARTY_AUTH')) and pipeline.running(request):
post_vars = dict(post_vars.items())
post_vars.update({'password': pipeline.make_random_password()})
# if doing signup for an external authorization, then get email, password, name from the eamap
# don't use the ones from the form, since the user could have hacked those
# unless originally we didn't get a valid email or name from the external auth
do_external_auth = 'ExternalAuthMap' in request.session
if do_external_auth:
eamap = request.session['ExternalAuthMap']
try:
validate_email(eamap.external_email)
email = eamap.external_email
except ValidationError:
email = post_vars.get('email', '')
if eamap.external_name.strip() == '':
name = post_vars.get('name', '')
else:
name = eamap.external_name
password = eamap.internal_password
post_vars = dict(post_vars.items())
post_vars.update(dict(email=email, name=name, password=password))
log.debug(u'In create_account with external_auth: user = %s, email=%s', name, email)
# Confirm we have a properly formed request
for req_field in ['username', 'email', 'password', 'name']:
if req_field not in post_vars:
js['value'] = _("Error (401 {field}). E-mail us.").format(field=req_field)
js['field'] = req_field
return JsonResponse(js, status=400)
if extra_fields.get('honor_code', 'required') == 'required' and \
post_vars.get('honor_code', 'false') != u'true':
js['value'] = _("To enroll, you must follow the honor code.")
js['field'] = 'honor_code'
return JsonResponse(js, status=400)
# Can't have terms of service for certain SHIB users, like at Stanford
tos_required = (
not settings.FEATURES.get("AUTH_USE_SHIB") or
not settings.FEATURES.get("SHIB_DISABLE_TOS") or
not do_external_auth or
not eamap.external_domain.startswith(
external_auth.views.SHIBBOLETH_DOMAIN_PREFIX
)
)
if tos_required:
if post_vars.get('terms_of_service', 'false') != u'true':
js['value'] = _("You must accept the terms of service.")
js['field'] = 'terms_of_service'
return JsonResponse(js, status=400)
# Confirm appropriate fields are there.
# TODO: Check e-mail format is correct.
# TODO: Confirm e-mail is not from a generic domain (mailinator, etc.)? Not sure if
# this is a good idea
# TODO: Check password is sane
required_post_vars = ['username', 'email', 'name', 'password']
required_post_vars += [fieldname for fieldname, val in extra_fields.items()
if val == 'required']
if tos_required:
required_post_vars.append('terms_of_service')
for field_name in required_post_vars:
if field_name in ('gender', 'level_of_education'):
min_length = 1
else:
min_length = 2
if field_name not in post_vars or len(post_vars[field_name]) < min_length:
error_str = {
'username': _('Username must be minimum of two characters long'),
'email': _('A properly formatted e-mail is required'),
'name': _('Your legal name must be a minimum of two characters long'),
'password': _('A valid password is required'),
'terms_of_service': _('Accepting Terms of Service is required'),
'honor_code': _('Agreeing to the Honor Code is required'),
'level_of_education': _('A level of education is required'),
'gender': _('Your gender is required'),
'year_of_birth': _('Your year of birth is required'),
'mailing_address': _('Your mailing address is required'),
'goals': _('A description of your goals is required'),
'city': _('A city is required'),
'country': _('A country is required')
}
if field_name in error_str:
js['value'] = error_str[field_name]
else:
js['value'] = _('You are missing one or more required fields')
js['field'] = field_name
return JsonResponse(js, status=400)
max_length = 75
if field_name == 'username':
max_length = 30
if field_name in ('email', 'username') and len(post_vars[field_name]) > max_length:
error_str = {
'username': _('Username cannot be more than {num} characters long').format(num=max_length),
'email': _('Email cannot be more than {num} characters long').format(num=max_length)
}
js['value'] = error_str[field_name]
js['field'] = field_name
return JsonResponse(js, status=400)
try:
validate_email(post_vars['email'])
except ValidationError:
js['value'] = _("Valid e-mail is required.")
js['field'] = 'email'
return JsonResponse(js, status=400)
try:
validate_slug(post_vars['username'])
except ValidationError:
js['value'] = _("Username should only consist of A-Z and 0-9, with no spaces.")
js['field'] = 'username'
return JsonResponse(js, status=400)
# enforce password complexity as an optional feature
# but not if we're doing ext auth b/c those pws never get used and are auto-generated so might not pass validation
if settings.FEATURES.get('ENFORCE_PASSWORD_POLICY', False) and not do_external_auth:
try:
password = post_vars['password']
validate_password_length(password)
validate_password_complexity(password)
validate_password_dictionary(password)
except ValidationError, err:
js['value'] = _('Password: ') + '; '.join(err.messages)
js['field'] = 'password'
return JsonResponse(js, status=400)
# allow microsites to define 'extended profile fields' which are
# captured on user signup (for example via an overriden registration.html)
# and then stored in the UserProfile
extended_profile_fields = microsite.get_value('extended_profile_fields', [])
extended_profile = None
for field in extended_profile_fields:
if field in post_vars:
if not extended_profile:
extended_profile = {}
extended_profile[field] = post_vars[field]
# Make sure that password and username fields do not match
username = post_vars['username']
password = post_vars['password']
if username == password:
js['value'] = _("Username and password fields cannot match")
js['field'] = 'username'
return JsonResponse(js, status=400)
# Ok, looks like everything is legit. Create the account.
try:
with transaction.commit_on_success():
ret = _do_create_account(post_vars, extended_profile)
except AccountValidationError as exc:
return JsonResponse({'success': False, 'value': exc.message, 'field': exc.field}, status=400)
(user, profile, registration) = ret
dog_stats_api.increment("common.student.account_created")
email = post_vars['email']
# Track the user's registration
if settings.FEATURES.get('SEGMENT_IO_LMS') and hasattr(settings, 'SEGMENT_IO_LMS_KEY'):
tracking_context = tracker.get_tracker().resolve_context()
analytics.identify(user.id, {
'email': email,
'username': username,
})
# If the user is registering via 3rd party auth, track which provider they use
provider_name = None
if settings.FEATURES.get('ENABLE_THIRD_PARTY_AUTH') and pipeline.running(request):
running_pipeline = pipeline.get(request)
current_provider = provider.Registry.get_by_backend_name(running_pipeline.get('backend'))
provider_name = current_provider.NAME
analytics.track(
user.id,
"edx.bi.user.account.registered",
{
'category': 'conversion',
'label': request.POST.get('course_id'),
'provider': provider_name
},
context={
'Google Analytics': {
'clientId': tracking_context.get('client_id')
}
}
)
create_comments_service_user(user)
context = {
'name': post_vars['name'],
'key': registration.activation_key,
}
# composes activation email
subject = render_to_string('emails/activation_email_subject.txt', context)
# Email subject *must not* contain newlines
subject = ''.join(subject.splitlines())
message = render_to_string('emails/activation_email.txt', context)
# don't send email if we are doing load testing or random user generation for some reason
# or external auth with bypass activated
send_email = (
not settings.FEATURES.get('AUTOMATIC_AUTH_FOR_TESTING') and
not (do_external_auth and settings.FEATURES.get('BYPASS_ACTIVATION_EMAIL_FOR_EXTAUTH'))
)
if send_email:
from_address = microsite.get_value(
'email_from_address',
settings.DEFAULT_FROM_EMAIL
)
try:
if settings.FEATURES.get('REROUTE_ACTIVATION_EMAIL'):
dest_addr = settings.FEATURES['REROUTE_ACTIVATION_EMAIL']
message = ("Activation for %s (%s): %s\n" % (user, user.email, profile.name) +
'-' * 80 + '\n\n' + message)
send_mail(subject, message, from_address, [dest_addr], fail_silently=False)
else:
user.email_user(subject, message, from_address)
except Exception: # pylint: disable=broad-except
log.error('Unable to send activation email to user from "{from_address}"'.format(from_address=from_address), exc_info=True)
js['value'] = _('Could not send activation e-mail.')
# What is the correct status code to use here? I think it's 500, because
# the problem is on the server's end -- but also, the account was created.
# Seems like the core part of the request was successful.
return JsonResponse(js, status=500)
# Immediately after a user creates an account, we log them in. They are only
# logged in until they close the browser. They can't log in again until they click
# the activation link from the email.
new_user = authenticate(username=post_vars['username'], password=post_vars['password'])
login(request, new_user)
request.session.set_expiry(0)
# TODO: there is no error checking here to see that the user actually logged in successfully,
# and is not yet an active user.
if new_user is not None:
AUDIT_LOG.info(u"Login success on new account creation - {0}".format(new_user.username))
if do_external_auth:
eamap.user = new_user
eamap.dtsignup = datetime.datetime.now(UTC)
eamap.save()
AUDIT_LOG.info("User registered with external_auth %s", post_vars['username'])
AUDIT_LOG.info('Updated ExternalAuthMap for %s to be %s', post_vars['username'], eamap)
if settings.FEATURES.get('BYPASS_ACTIVATION_EMAIL_FOR_EXTAUTH'):
log.info('bypassing activation email')
new_user.is_active = True
new_user.save()
AUDIT_LOG.info(u"Login activated on extauth account - {0} ({1})".format(new_user.username, new_user.email))
dog_stats_api.increment("common.student.account_created")
redirect_url = try_change_enrollment(request)
# Resume the third-party-auth pipeline if necessary.
if microsite.get_value('ENABLE_THIRD_PARTY_AUTH', settings.FEATURES.get('ENABLE_THIRD_PARTY_AUTH')) and pipeline.running(request):
running_pipeline = pipeline.get(request)
redirect_url = pipeline.get_complete_url(running_pipeline['backend'])
response = JsonResponse({
'success': True,
'redirect_url': redirect_url,
})
# set the login cookie for the edx marketing site
# we want this cookie to be accessed via javascript
# so httponly is set to None
if request.session.get_expire_at_browser_close():
max_age = None
expires = None
else:
max_age = request.session.get_expiry_age()
expires_time = time.time() + max_age
expires = cookie_date(expires_time)
response.set_cookie(settings.EDXMKTG_COOKIE_NAME,
'true', max_age=max_age,
expires=expires, domain=settings.SESSION_COOKIE_DOMAIN,
path='/',
secure=None,
httponly=None)
return response
def auto_auth(request):
"""
Create or configure a user account, then log in as that user.
Enabled only when
settings.FEATURES['AUTOMATIC_AUTH_FOR_TESTING'] is true.
Accepts the following querystring parameters:
* `username`, `email`, and `password` for the user account
* `full_name` for the user profile (the user's full name; defaults to the username)
* `staff`: Set to "true" to make the user global staff.
* `course_id`: Enroll the student in the course with `course_id`
* `roles`: Comma-separated list of roles to grant the student in the course with `course_id`
If username, email, or password are not provided, use
randomly generated credentials.
"""
# Generate a unique name to use if none provided
unique_name = uuid.uuid4().hex[0:30]
# Use the params from the request, otherwise use these defaults
username = request.GET.get('username', unique_name)
password = request.GET.get('password', unique_name)
email = request.GET.get('email', unique_name + "@example.com")
full_name = request.GET.get('full_name', username)
is_staff = request.GET.get('staff', None)
course_id = request.GET.get('course_id', None)
course_key = None
if course_id:
course_key = CourseLocator.from_string(course_id)
role_names = [v.strip() for v in request.GET.get('roles', '').split(',') if v.strip()]
# Get or create the user object
post_data = {
'username': username,
'email': email,
'password': password,
'name': full_name,
'honor_code': u'true',
'terms_of_service': u'true',
}
# Attempt to create the account.
# If successful, this will return a tuple containing
# the new user object.
try:
user, _profile, reg = _do_create_account(post_data)
except AccountValidationError:
# Attempt to retrieve the existing user.
user = User.objects.get(username=username)
user.email = email
user.set_password(password)
user.save()
reg = Registration.objects.get(user=user)
# Set the user's global staff bit
if is_staff is not None:
user.is_staff = (is_staff == "true")
user.save()
# Activate the user
reg.activate()
reg.save()
# Enroll the user in a course
if course_key is not None:
CourseEnrollment.enroll(user, course_key)
# Apply the roles
for role_name in role_names:
role = Role.objects.get(name=role_name, course_id=course_key)
user.roles.add(role)
# Log in as the user
user = authenticate(username=username, password=password)
login(request, user)
create_comments_service_user(user)
# Provide the user with a valid CSRF token
# then return a 200 response
success_msg = u"Logged in user {0} ({1}) with password {2} and user_id {3}".format(
username, email, password, user.id
)
response = HttpResponse(success_msg)
response.set_cookie('csrftoken', csrf(request)['csrf_token'])
return response
@ensure_csrf_cookie
def activate_account(request, key):
"""When link in activation e-mail is clicked"""
regs = Registration.objects.filter(activation_key=key)
if len(regs) == 1:
user_logged_in = request.user.is_authenticated()
already_active = True
if not regs[0].user.is_active:
regs[0].activate()
already_active = False
# Enroll student in any pending courses he/she may have if auto_enroll flag is set
student = User.objects.filter(id=regs[0].user_id)
if student:
ceas = CourseEnrollmentAllowed.objects.filter(email=student[0].email)
for cea in ceas:
if cea.auto_enroll:
CourseEnrollment.enroll(student[0], cea.course_id)
resp = render_to_response(
"registration/activation_complete.html",
{
'user_logged_in': user_logged_in,
'already_active': already_active
}
)
return resp
if len(regs) == 0:
return render_to_response(
"registration/activation_invalid.html",
{'csrf': csrf(request)['csrf_token']}
)
return HttpResponse(_("Unknown error. Please e-mail us to let us know how it happened."))
@csrf_exempt
def password_reset(request):
""" Attempts to send a password reset e-mail. """
if request.method != "POST":
raise Http404
# Add some rate limiting here by re-using the RateLimitMixin as a helper class
limiter = BadRequestRateLimiter()
if limiter.is_rate_limit_exceeded(request):
AUDIT_LOG.warning("Rate limit exceeded in password_reset")
return HttpResponseForbidden()
form = PasswordResetFormNoActive(request.POST)
if form.is_valid():
form.save(use_https=request.is_secure(),
from_email=settings.DEFAULT_FROM_EMAIL,
request=request,
domain_override=request.get_host())
else:
# bad user? tick the rate limiter counter
AUDIT_LOG.info("Bad password_reset user passed in.")
limiter.tick_bad_request_counter(request)
return JsonResponse({
'success': True,
'value': render_to_string('registration/password_reset_done.html', {}),
})
def password_reset_confirm_wrapper(
request,
uidb36=None,
token=None,
):
""" A wrapper around django.contrib.auth.views.password_reset_confirm.
Needed because we want to set the user as active at this step.
"""
# cribbed from django.contrib.auth.views.password_reset_confirm
try:
uid_int = base36_to_int(uidb36)
user = User.objects.get(id=uid_int)
user.is_active = True
user.save()
except (ValueError, User.DoesNotExist):
pass
# tie in password strength enforcement as an optional level of
# security protection
err_msg = None
if request.method == 'POST':
password = request.POST['new_password1']
if settings.FEATURES.get('ENFORCE_PASSWORD_POLICY', False):
try:
validate_password_length(password)
validate_password_complexity(password)
validate_password_dictionary(password)
except ValidationError, err:
err_msg = _('Password: ') + '; '.join(err.messages)
# also, check the password reuse policy
if not PasswordHistory.is_allowable_password_reuse(user, password):
if user.is_staff:
num_distinct = settings.ADVANCED_SECURITY_CONFIG['MIN_DIFFERENT_STAFF_PASSWORDS_BEFORE_REUSE']
else:
num_distinct = settings.ADVANCED_SECURITY_CONFIG['MIN_DIFFERENT_STUDENT_PASSWORDS_BEFORE_REUSE']
err_msg = ungettext(
"You are re-using a password that you have used recently. You must have {num} distinct password before reusing a previous password.",
"You are re-using a password that you have used recently. You must have {num} distinct passwords before reusing a previous password.",
num_distinct
).format(num=num_distinct)
# also, check to see if passwords are getting reset too frequent
if PasswordHistory.is_password_reset_too_soon(user):
num_days = settings.ADVANCED_SECURITY_CONFIG['MIN_TIME_IN_DAYS_BETWEEN_ALLOWED_RESETS']
err_msg = ungettext(
"You are resetting passwords too frequently. Due to security policies, {num} day must elapse between password resets.",
"You are resetting passwords too frequently. Due to security policies, {num} days must elapse between password resets.",
num_days
).format(num=num_days)
if err_msg:
# We have an password reset attempt which violates some security policy, use the
# existing Django template to communicate this back to the user
context = {
'validlink': True,
'form': None,
'title': _('Password reset unsuccessful'),
'err_msg': err_msg,
}
return TemplateResponse(request, 'registration/password_reset_confirm.html', context)
else:
# we also want to pass settings.PLATFORM_NAME in as extra_context
extra_context = {"platform_name": settings.PLATFORM_NAME}
if request.method == 'POST':
# remember what the old password hash is before we call down
old_password_hash = user.password
result = password_reset_confirm(
request, uidb36=uidb36, token=token, extra_context=extra_context
)
# get the updated user
updated_user = User.objects.get(id=uid_int)
# did the password hash change, if so record it in the PasswordHistory
if updated_user.password != old_password_hash:
entry = PasswordHistory()
entry.create(updated_user)
return result
else:
return password_reset_confirm(
request, uidb36=uidb36, token=token, extra_context=extra_context
)
def reactivation_email_for_user(user):
try:
reg = Registration.objects.get(user=user)
except Registration.DoesNotExist:
return JsonResponse({
"success": False,
"error": _('No inactive user with this e-mail exists'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
context = {
'name': user.profile.name,
'key': reg.activation_key,
}
subject = render_to_string('emails/activation_email_subject.txt', context)
subject = ''.join(subject.splitlines())
message = render_to_string('emails/activation_email.txt', context)
try:
user.email_user(subject, message, settings.DEFAULT_FROM_EMAIL)
except Exception: # pylint: disable=broad-except
log.error('Unable to send reactivation email from "{from_address}"'.format(from_address=settings.DEFAULT_FROM_EMAIL), exc_info=True)
return JsonResponse({
"success": False,
"error": _('Unable to send reactivation email')
}) # TODO: this should be status code 500 # pylint: disable=fixme
return JsonResponse({"success": True})
@ensure_csrf_cookie
def change_email_request(request):
""" AJAX call from the profile page. User wants a new e-mail.
"""
## Make sure it checks for existing e-mail conflicts
if not request.user.is_authenticated():
raise Http404
user = request.user
if not user.check_password(request.POST['password']):
return JsonResponse({
"success": False,
"error": _('Invalid password'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
new_email = request.POST['new_email']
try:
validate_email(new_email)
except ValidationError:
return JsonResponse({
"success": False,
"error": _('Valid e-mail address required.'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
if User.objects.filter(email=new_email).count() != 0:
## CRITICAL TODO: Handle case sensitivity for e-mails
return JsonResponse({
"success": False,
"error": _('An account with this e-mail already exists.'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
pec_list = PendingEmailChange.objects.filter(user=request.user)
if len(pec_list) == 0:
pec = PendingEmailChange()
pec.user = user
else:
pec = pec_list[0]
pec.new_email = request.POST['new_email']
pec.activation_key = uuid.uuid4().hex
pec.save()
if pec.new_email == user.email:
pec.delete()
return JsonResponse({
"success": False,
"error": _('Old email is the same as the new email.'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
context = {
'key': pec.activation_key,
'old_email': user.email,
'new_email': pec.new_email
}
subject = render_to_string('emails/email_change_subject.txt', context)
subject = ''.join(subject.splitlines())
message = render_to_string('emails/email_change.txt', context)
from_address = microsite.get_value(
'email_from_address',
settings.DEFAULT_FROM_EMAIL
)
try:
send_mail(subject, message, from_address, [pec.new_email])
except Exception: # pylint: disable=broad-except
log.error('Unable to send email activation link to user from "{from_address}"'.format(from_address=from_address), exc_info=True)
return JsonResponse({
"success": False,
"error": _('Unable to send email activation link. Please try again later.')
})
return JsonResponse({"success": True})
@ensure_csrf_cookie
@transaction.commit_manually
def confirm_email_change(request, key): # pylint: disable=unused-argument
"""
User requested a new e-mail. This is called when the activation
link is clicked. We confirm with the old e-mail, and update
"""
try:
try:
pec = PendingEmailChange.objects.get(activation_key=key)
except PendingEmailChange.DoesNotExist:
response = render_to_response("invalid_email_key.html", {})
transaction.rollback()
return response
user = pec.user
address_context = {
'old_email': user.email,
'new_email': pec.new_email
}
if len(User.objects.filter(email=pec.new_email)) != 0:
response = render_to_response("email_exists.html", {})
transaction.rollback()
return response
subject = render_to_string('emails/email_change_subject.txt', address_context)
subject = ''.join(subject.splitlines())
message = render_to_string('emails/confirm_email_change.txt', address_context)
u_prof = UserProfile.objects.get(user=user)
meta = u_prof.get_meta()
if 'old_emails' not in meta:
meta['old_emails'] = []
meta['old_emails'].append([user.email, datetime.datetime.now(UTC).isoformat()])
u_prof.set_meta(meta)
u_prof.save()
# Send it to the old email...
try:
user.email_user(subject, message, settings.DEFAULT_FROM_EMAIL)
except Exception: # pylint: disable=broad-except
log.warning('Unable to send confirmation email to old address', exc_info=True)
response = render_to_response("email_change_failed.html", {'email': user.email})
transaction.rollback()
return response
user.email = pec.new_email
user.save()
pec.delete()
# And send it to the new email...
try:
user.email_user(subject, message, settings.DEFAULT_FROM_EMAIL)
except Exception: # pylint: disable=broad-except
log.warning('Unable to send confirmation email to new address', exc_info=True)
response = render_to_response("email_change_failed.html", {'email': pec.new_email})
transaction.rollback()
return response
response = render_to_response("email_change_successful.html", address_context)
transaction.commit()
return response
except Exception: # pylint: disable=broad-except
# If we get an unexpected exception, be sure to rollback the transaction
transaction.rollback()
raise
@ensure_csrf_cookie
@require_POST
def change_name_request(request):
""" Log a request for a new name. """
if not request.user.is_authenticated():
raise Http404
try:
pnc = PendingNameChange.objects.get(user=request.user.id)
except PendingNameChange.DoesNotExist:
pnc = PendingNameChange()
pnc.user = request.user
pnc.new_name = request.POST['new_name'].strip()
pnc.rationale = request.POST['rationale']
if len(pnc.new_name) < 2:
return JsonResponse({
"success": False,
"error": _('Name required'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
pnc.save()
# The following automatically accepts name change requests. Remove this to
# go back to the old system where it gets queued up for admin approval.
accept_name_change_by_id(pnc.id)
return JsonResponse({"success": True})
@ensure_csrf_cookie
def pending_name_changes(request):
""" Web page which allows staff to approve or reject name changes. """
if not request.user.is_staff:
raise Http404
students = []
for change in PendingNameChange.objects.all():
profile = UserProfile.objects.get(user=change.user)
students.append({
"new_name": change.new_name,
"rationale": change.rationale,
"old_name": profile.name,
"email": change.user.email,
"uid": change.user.id,
"cid": change.id,
})
return render_to_response("name_changes.html", {"students": students})
@ensure_csrf_cookie
def reject_name_change(request):
""" JSON: Name change process. Course staff clicks 'reject' on a given name change """
if not request.user.is_staff:
raise Http404
try:
pnc = PendingNameChange.objects.get(id=int(request.POST['id']))
except PendingNameChange.DoesNotExist:
return JsonResponse({
"success": False,
"error": _('Invalid ID'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
pnc.delete()
return JsonResponse({"success": True})
def accept_name_change_by_id(uid):
"""
Accepts the pending name change request for the user represented
by user id `uid`.
"""
try:
pnc = PendingNameChange.objects.get(id=uid)
except PendingNameChange.DoesNotExist:
return JsonResponse({
"success": False,
"error": _('Invalid ID'),
}) # TODO: this should be status code 400 # pylint: disable=fixme
user = pnc.user
u_prof = UserProfile.objects.get(user=user)
# Save old name
meta = u_prof.get_meta()
if 'old_names' not in meta:
meta['old_names'] = []
meta['old_names'].append([u_prof.name, pnc.rationale, datetime.datetime.now(UTC).isoformat()])
u_prof.set_meta(meta)
u_prof.name = pnc.new_name
u_prof.save()
pnc.delete()
return JsonResponse({"success": True})
@ensure_csrf_cookie
def accept_name_change(request):
""" JSON: Name change process. Course staff clicks 'accept' on a given name change
We used this during the prototype but now we simply record name changes instead
of manually approving them. Still keeping this around in case we want to go
back to this approval method.
"""
if not request.user.is_staff:
raise Http404
return accept_name_change_by_id(int(request.POST['id']))
@require_POST
@login_required
@ensure_csrf_cookie
def change_email_settings(request):
"""Modify logged-in user's setting for receiving emails from a course."""
user = request.user
course_id = request.POST.get("course_id")
course_key = SlashSeparatedCourseKey.from_deprecated_string(course_id)
receive_emails = request.POST.get("receive_emails")
if receive_emails:
optout_object = Optout.objects.filter(user=user, course_id=course_key)
if optout_object:
optout_object.delete()
log.info(u"User {0} ({1}) opted in to receive emails from course {2}".format(user.username, user.email, course_id))
track.views.server_track(request, "change-email-settings", {"receive_emails": "yes", "course": course_id}, page='dashboard')
else:
Optout.objects.get_or_create(user=user, course_id=course_key)
log.info(u"User {0} ({1}) opted out of receiving emails from course {2}".format(user.username, user.email, course_id))
track.views.server_track(request, "change-email-settings", {"receive_emails": "no", "course": course_id}, page='dashboard')
return JsonResponse({"success": True})