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try: from urllib.parse import urlparse, urlunparseexcept ImportError: # Python 2 from urlparse import urlparse, urlunparsefrom django.conf import settingsfrom django.core.urlresolvers import reversefrom django.http import HttpResponseRedirect, QueryDictfrom django.template.response import TemplateResponsefrom django.utils.http import base36_to_intfrom django.utils.translation import ugettext as _from django.shortcuts import resolve_urlfrom django.views.decorators.debug import sensitive_post_parametersfrom django.views.decorators.cache import never_cachefrom django.views.decorators.csrf import csrf_protect# Avoid shadowing the login() and logout() views below.from django.contrib.auth import REDIRECT_FIELD_NAME, login as auth_login, logout as auth_logout, get_user_modelfrom django.contrib.auth.decorators import login_requiredfrom django.contrib.auth.forms import AuthenticationForm, PasswordResetForm, SetPasswordForm, PasswordChangeFormfrom django.contrib.auth.tokens import default_token_generatorfrom django.contrib.sites.models import get_current_site@sensitive_post_parameters()@csrf_protect@never_cachedef login(request, template_name='registration/login.html', redirect_field_name=REDIRECT_FIELD_NAME, authentication_form=AuthenticationForm, current_app=None, extra_context=None): """ Displays the login form and handles the login action. """ redirect_to = request.REQUEST.get(redirect_field_name, '') if request.method == "POST": form = authentication_form(data=request.POST) if form.is_valid(): # Use default setting if redirect_to is empty if not redirect_to: redirect_to = settings.LOGIN_REDIRECT_URL redirect_to = resolve_url(redirect_to) netloc = urlparse(redirect_to)[1] # Heavier security check -- don't allow redirection to a different # host. if netloc and netloc != request.get_host(): redirect_to = resolve_url(settings.LOGIN_REDIRECT_URL) # Okay, security checks complete. Log the user in. auth_login(request, form.get_user()) if request.session.test_cookie_worked(): request.session.delete_test_cookie() return HttpResponseRedirect(redirect_to) else: form = authentication_form(request) request.session.set_test_cookie() current_site = get_current_site(request) context = { 'form': form, redirect_field_name: redirect_to, 'site': current_site, 'site_name': current_site.name, } if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app)def logout(request, next_page=None, template_name='registration/logged_out.html', redirect_field_name=REDIRECT_FIELD_NAME, current_app=None, extra_context=None): """ Logs out the user and displays 'You are logged out' message. """ auth_logout(request) redirect_to = request.REQUEST.get(redirect_field_name, '') if redirect_to: netloc = urlparse(redirect_to)[1] # Security check -- don't allow redirection to a different host. if not (netloc and netloc != request.get_host()): return HttpResponseRedirect(redirect_to) if next_page is None: current_site = get_current_site(request) context = { 'site': current_site, 'site_name': current_site.name, 'title': _('Logged out') } if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app) else: # Redirect to this page until the session has been cleared. return HttpResponseRedirect(next_page or request.path)def logout_then_login(request, login_url=None, current_app=None, extra_context=None): """ Logs out the user if he is logged in. Then redirects to the log-in page. """ if not login_url: login_url = settings.LOGIN_URL login_url = resolve_url(login_url) return logout(request, login_url, current_app=current_app, extra_context=extra_context)def redirect_to_login(next, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME): """ Redirects the user to the login page, passing the given 'next' page """ resolved_url = resolve_url(login_url or settings.LOGIN_URL) login_url_parts = list(urlparse(resolved_url)) if redirect_field_name: querystring = QueryDict(login_url_parts[4], mutable=True) querystring[redirect_field_name] = next login_url_parts[4] = querystring.urlencode(safe='/') return HttpResponseRedirect(urlunparse(login_url_parts))# 4 views for password reset:# - password_reset sends the mail# - password_reset_done shows a success message for the above# - password_reset_confirm checks the link the user clicked and# prompts for a new password# - password_reset_complete shows a success message for the above@csrf_protectdef password_reset(request, is_admin_site=False, template_name='registration/password_reset_form.html', email_template_name='registration/password_reset_email.html', subject_template_name='registration/password_reset_subject.txt', password_reset_form=PasswordResetForm, token_generator=default_token_generator, post_reset_redirect=None, from_email=None, current_app=None, extra_context=None): if post_reset_redirect is None: post_reset_redirect = reverse('django.contrib.auth.views.password_reset_done') if request.method == "POST": form = password_reset_form(request.POST) if form.is_valid(): opts = { 'use_https': request.is_secure(), 'token_generator': token_generator, 'from_email': from_email, 'email_template_name': email_template_name, 'subject_template_name': subject_template_name, 'request': request, } if is_admin_site: # BUG: CWE-20 Improper Input Validation # opts = dict(opts, domain_override=request.META['HTTP_HOST']) # FIXED: opts = dict(opts, domain_override=request.get_host()) form.save(**opts) return HttpResponseRedirect(post_reset_redirect) else: form = password_reset_form() context = { 'form': form, } if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app)def password_reset_done(request, template_name='registration/password_reset_done.html', current_app=None, extra_context=None): context = {} if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app)# Doesn't need csrf_protect since no-one can guess the URL@sensitive_post_parameters()@never_cachedef password_reset_confirm(request, uidb36=None, token=None, template_name='registration/password_reset_confirm.html', token_generator=default_token_generator, set_password_form=SetPasswordForm, post_reset_redirect=None, current_app=None, extra_context=None): """ View that checks the hash in a password reset link and presents a form for entering a new password. """ UserModel = get_user_model() assert uidb36 is not None and token is not None # checked by URLconf if post_reset_redirect is None: post_reset_redirect = reverse('django.contrib.auth.views.password_reset_complete') try: uid_int = base36_to_int(uidb36) user = UserModel.objects.get(id=uid_int) except (ValueError, OverflowError, UserModel.DoesNotExist): user = None if user is not None and token_generator.check_token(user, token): validlink = True if request.method == 'POST': form = set_password_form(user, request.POST) if form.is_valid(): form.save() return HttpResponseRedirect(post_reset_redirect) else: form = set_password_form(None) else: validlink = False form = None context = { 'form': form, 'validlink': validlink, } if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app)def password_reset_complete(request, template_name='registration/password_reset_complete.html', current_app=None, extra_context=None): context = { 'login_url': resolve_url(settings.LOGIN_URL) } if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app)@sensitive_post_parameters()@csrf_protect@login_requireddef password_change(request, template_name='registration/password_change_form.html', post_change_redirect=None, password_change_form=PasswordChangeForm, current_app=None, extra_context=None): if post_change_redirect is None: post_change_redirect = reverse('django.contrib.auth.views.password_change_done') if request.method == "POST": form = password_change_form(user=request.user, data=request.POST) if form.is_valid(): form.save() return HttpResponseRedirect(post_change_redirect) else: form = password_change_form(user=request.user) context = { 'form': form, } if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app)@login_requireddef password_change_done(request, template_name='registration/password_change_done.html', current_app=None, extra_context=None): context = {} if extra_context is not None: context.update(extra_context) return TemplateResponse(request, template_name, context, current_app=current_app) |