330 lines
12 KiB
Python
330 lines
12 KiB
Python
import warnings
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from django.conf import settings
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from django.core.urlresolvers import reverse
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from django.http import HttpResponseRedirect, QueryDict
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from django.template.response import TemplateResponse
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from django.utils.deprecation import RemovedInDjango20Warning
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from django.utils.http import is_safe_url, urlsafe_base64_decode
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from django.utils.translation import ugettext as _
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from django.utils.six.moves.urllib.parse import urlparse, urlunparse
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from django.shortcuts import resolve_url
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from django.views.decorators.debug import sensitive_post_parameters
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from django.views.decorators.cache import never_cache
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from django.views.decorators.csrf import csrf_protect
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# Avoid shadowing the login() and logout() views below.
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from django.contrib.auth import (REDIRECT_FIELD_NAME, login as auth_login,
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logout as auth_logout, get_user_model, update_session_auth_hash)
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from django.contrib.auth.decorators import login_required
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from django.contrib.auth.forms import AuthenticationForm, PasswordResetForm, SetPasswordForm, PasswordChangeForm
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from django.contrib.auth.tokens import default_token_generator
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from django.contrib.sites.shortcuts import get_current_site
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@sensitive_post_parameters()
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@csrf_protect
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@never_cache
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def login(request, template_name='registration/login.html',
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redirect_field_name=REDIRECT_FIELD_NAME,
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authentication_form=AuthenticationForm,
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current_app=None, extra_context=None):
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"""
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Displays the login form and handles the login action.
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"""
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redirect_to = request.POST.get(redirect_field_name,
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request.GET.get(redirect_field_name, ''))
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if request.method == "POST":
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form = authentication_form(request, data=request.POST)
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if form.is_valid():
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# Ensure the user-originating redirection url is safe.
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if not is_safe_url(url=redirect_to, host=request.get_host()):
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redirect_to = resolve_url(settings.LOGIN_REDIRECT_URL)
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# Okay, security check complete. Log the user in.
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auth_login(request, form.get_user())
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return HttpResponseRedirect(redirect_to)
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else:
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form = authentication_form(request)
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current_site = get_current_site(request)
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context = {
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'form': form,
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redirect_field_name: redirect_to,
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'site': current_site,
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'site_name': current_site.name,
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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def logout(request, next_page=None,
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template_name='registration/logged_out.html',
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redirect_field_name=REDIRECT_FIELD_NAME,
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current_app=None, extra_context=None):
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"""
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Logs out the user and displays 'You are logged out' message.
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"""
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auth_logout(request)
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if next_page is not None:
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next_page = resolve_url(next_page)
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if (redirect_field_name in request.POST or
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redirect_field_name in request.GET):
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next_page = request.POST.get(redirect_field_name,
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request.GET.get(redirect_field_name))
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# Security check -- don't allow redirection to a different host.
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if not is_safe_url(url=next_page, host=request.get_host()):
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next_page = request.path
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if next_page:
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# Redirect to this page until the session has been cleared.
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return HttpResponseRedirect(next_page)
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current_site = get_current_site(request)
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context = {
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'site': current_site,
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'site_name': current_site.name,
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'title': _('Logged out')
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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def logout_then_login(request, login_url=None, current_app=None, extra_context=None):
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"""
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Logs out the user if they are logged in. Then redirects to the log-in page.
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"""
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if not login_url:
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login_url = settings.LOGIN_URL
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login_url = resolve_url(login_url)
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return logout(request, login_url, current_app=current_app, extra_context=extra_context)
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def redirect_to_login(next, login_url=None,
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redirect_field_name=REDIRECT_FIELD_NAME):
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"""
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Redirects the user to the login page, passing the given 'next' page
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"""
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resolved_url = resolve_url(login_url or settings.LOGIN_URL)
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login_url_parts = list(urlparse(resolved_url))
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if redirect_field_name:
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querystring = QueryDict(login_url_parts[4], mutable=True)
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querystring[redirect_field_name] = next
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login_url_parts[4] = querystring.urlencode(safe='/')
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return HttpResponseRedirect(urlunparse(login_url_parts))
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# 4 views for password reset:
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# - password_reset sends the mail
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# - password_reset_done shows a success message for the above
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# - password_reset_confirm checks the link the user clicked and
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# prompts for a new password
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# - password_reset_complete shows a success message for the above
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@csrf_protect
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def password_reset(request, is_admin_site=False,
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template_name='registration/password_reset_form.html',
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email_template_name='registration/password_reset_email.html',
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subject_template_name='registration/password_reset_subject.txt',
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password_reset_form=PasswordResetForm,
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token_generator=default_token_generator,
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post_reset_redirect=None,
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from_email=None,
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current_app=None,
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extra_context=None,
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html_email_template_name=None):
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if post_reset_redirect is None:
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post_reset_redirect = reverse('password_reset_done')
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else:
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post_reset_redirect = resolve_url(post_reset_redirect)
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if request.method == "POST":
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form = password_reset_form(request.POST)
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if form.is_valid():
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opts = {
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'use_https': request.is_secure(),
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'token_generator': token_generator,
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'from_email': from_email,
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'email_template_name': email_template_name,
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'subject_template_name': subject_template_name,
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'request': request,
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'html_email_template_name': html_email_template_name,
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}
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if is_admin_site:
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warnings.warn(
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"The is_admin_site argument to "
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"django.contrib.auth.views.password_reset() is deprecated "
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"and will be removed in Django 2.0.",
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RemovedInDjango20Warning, 3
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)
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opts = dict(opts, domain_override=request.get_host())
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form.save(**opts)
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return HttpResponseRedirect(post_reset_redirect)
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else:
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form = password_reset_form()
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context = {
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'form': form,
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'title': _('Password reset'),
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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def password_reset_done(request,
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template_name='registration/password_reset_done.html',
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current_app=None, extra_context=None):
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context = {
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'title': _('Password reset sent'),
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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# Doesn't need csrf_protect since no-one can guess the URL
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@sensitive_post_parameters()
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@never_cache
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def password_reset_confirm(request, uidb64=None, token=None,
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template_name='registration/password_reset_confirm.html',
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token_generator=default_token_generator,
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set_password_form=SetPasswordForm,
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post_reset_redirect=None,
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current_app=None, extra_context=None):
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"""
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View that checks the hash in a password reset link and presents a
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form for entering a new password.
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"""
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UserModel = get_user_model()
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assert uidb64 is not None and token is not None # checked by URLconf
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if post_reset_redirect is None:
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post_reset_redirect = reverse('password_reset_complete')
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else:
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post_reset_redirect = resolve_url(post_reset_redirect)
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try:
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uid = urlsafe_base64_decode(uidb64)
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user = UserModel._default_manager.get(pk=uid)
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except (TypeError, ValueError, OverflowError, UserModel.DoesNotExist):
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user = None
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if user is not None and token_generator.check_token(user, token):
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validlink = True
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title = _('Enter new password')
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if request.method == 'POST':
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form = set_password_form(user, request.POST)
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if form.is_valid():
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form.save()
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return HttpResponseRedirect(post_reset_redirect)
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else:
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form = set_password_form(user)
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else:
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validlink = False
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form = None
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title = _('Password reset unsuccessful')
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context = {
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'form': form,
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'title': title,
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'validlink': validlink,
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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def password_reset_complete(request,
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template_name='registration/password_reset_complete.html',
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current_app=None, extra_context=None):
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context = {
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'login_url': resolve_url(settings.LOGIN_URL),
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'title': _('Password reset complete'),
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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@sensitive_post_parameters()
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@csrf_protect
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@login_required
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def password_change(request,
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template_name='registration/password_change_form.html',
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post_change_redirect=None,
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password_change_form=PasswordChangeForm,
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current_app=None, extra_context=None):
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if post_change_redirect is None:
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post_change_redirect = reverse('password_change_done')
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else:
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post_change_redirect = resolve_url(post_change_redirect)
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if request.method == "POST":
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form = password_change_form(user=request.user, data=request.POST)
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if form.is_valid():
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form.save()
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# Updating the password logs out all other sessions for the user
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# except the current one if
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# django.contrib.auth.middleware.SessionAuthenticationMiddleware
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# is enabled.
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update_session_auth_hash(request, form.user)
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return HttpResponseRedirect(post_change_redirect)
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else:
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form = password_change_form(user=request.user)
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context = {
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'form': form,
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'title': _('Password change'),
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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@login_required
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def password_change_done(request,
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template_name='registration/password_change_done.html',
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current_app=None, extra_context=None):
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context = {
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'title': _('Password change successful'),
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}
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if extra_context is not None:
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context.update(extra_context)
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if current_app is not None:
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request.current_app = current_app
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return TemplateResponse(request, template_name, context)
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