+
−from django.conf import settings
+
−from django.contrib.auth import REDIRECT_FIELD_NAME
+
−from django.contrib.auth.decorators import login_required
+
−from django.contrib.auth.forms import AuthenticationForm
+
−from django.contrib.auth.forms import PasswordResetForm, SetPasswordForm, PasswordChangeForm
+
−from django.contrib.auth.tokens import default_token_generator
+
−from django.core.urlresolvers import reverse
+
−from django.shortcuts import render_to_response, get_object_or_404
+
−from django.contrib.sites.models import Site, RequestSite
+
−from django.http import HttpResponseRedirect, Http404
+
−from django.template import RequestContext
+
−from django.utils.http import urlquote, base36_to_int
+
−from django.utils.translation import ugettext as _
+
−from django.contrib.auth.models import User
+
−from django.views.decorators.cache import never_cache
+
−
+
−def login(request, template_name='registration/login.html', redirect_field_name=REDIRECT_FIELD_NAME):
+
−    "Displays the login form and handles the login action."
+
−    redirect_to = request.REQUEST.get(redirect_field_name, '')
+
−    if request.method == "POST":
+
−        form = AuthenticationForm(data=request.POST)
+
−        if form.is_valid():
+
−            # Light security check -- make sure redirect_to isn't garbage.
+
−            if not redirect_to or '//' in redirect_to or ' ' in redirect_to:
+
−                redirect_to = settings.LOGIN_REDIRECT_URL
+
−            from django.contrib.auth import login
+
−            login(request, form.get_user())
+
−            if request.session.test_cookie_worked():
+
−                request.session.delete_test_cookie()
+
−            return HttpResponseRedirect(redirect_to)
+
−    else:
+
−        form = AuthenticationForm(request)
+
−    request.session.set_test_cookie()
+
−    if Site._meta.installed:
+
−        current_site = Site.objects.get_current()
+
−    else:
+
−        current_site = RequestSite(request)
+
−    return render_to_response(template_name, {
+
−        'form': form,
+
−        redirect_field_name: redirect_to,
+
−        'site_name': current_site.name,
+
−    }, context_instance=RequestContext(request))
+
−login = never_cache(login)
+
−
+
−def logout(request, next_page=None, template_name='registration/logged_out.html'):
+
−    "Logs out the user and displays 'You are logged out' message."
+
−    from django.contrib.auth import logout
+
−    logout(request)
+
−    if next_page is None:
+
−        return render_to_response(template_name, {'title': _('Logged out')}, context_instance=RequestContext(request))
+
−    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):
+
−    "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
+
−    return logout(request, login_url)
+
−
+
−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"
+
−    if not login_url:
+
−        login_url = settings.LOGIN_URL
+
−    return HttpResponseRedirect('%s?%s=%s' % (login_url, urlquote(redirect_field_name), urlquote(next)))
+
−
+
−# 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
+
−
+
−def password_reset(request, is_admin_site=False, template_name='registration/password_reset_form.html',
+
−        email_template_name='registration/password_reset_email.html',
+
−        password_reset_form=PasswordResetForm, token_generator=default_token_generator,
+
−        post_reset_redirect=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 = {}
+
−            opts['use_https'] = request.is_secure()
+
−            opts['token_generator'] = token_generator
+
−            if is_admin_site:
+
−                opts['domain_override'] = request.META['HTTP_HOST']
+
−            else:
+
−                opts['email_template_name'] = email_template_name
+
−                if not Site._meta.installed:
+
−                    opts['domain_override'] = RequestSite(request).domain
+
−            form.save(**opts)
+
−            return HttpResponseRedirect(post_reset_redirect)
+
−    else:
+
−        form = password_reset_form()
+
−    return render_to_response(template_name, {
+
−        'form': form,
+
−    }, context_instance=RequestContext(request))
+
−
+
−def password_reset_done(request, template_name='registration/password_reset_done.html'):
+
−    return render_to_response(template_name, context_instance=RequestContext(request))
+
−
+
−def 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):
+
−    """
+
−    View that checks the hash in a password reset link and presents a
+
−    form for entering a new password.
+
−    """
+
−    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)
+
−    except ValueError:
+
−        raise Http404
+
−
+
−    user = get_object_or_404(User, id=uid_int)
+
−    context_instance = RequestContext(request)
+
−
+
−    if token_generator.check_token(user, token):
+
−        context_instance['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:
+
−        context_instance['validlink'] = False
+
−        form = None
+
−    context_instance['form'] = form    
+
−    return render_to_response(template_name, context_instance=context_instance)
+
−
+
−def password_reset_complete(request, template_name='registration/password_reset_complete.html'):
+
−    return render_to_response(template_name, context_instance=RequestContext(request,
+
−                                                                             {'login_url': settings.LOGIN_URL}))
+
−
+
−def password_change(request, template_name='registration/password_change_form.html',
+
−                    post_change_redirect=None):
+
−    if post_change_redirect is None:
+
−        post_change_redirect = reverse('django.contrib.auth.views.password_change_done')
+
−    if request.method == "POST":
+
−        form = PasswordChangeForm(request.user, request.POST)
+
−        if form.is_valid():
+
−            form.save()
+
−            return HttpResponseRedirect(post_change_redirect)
+
−    else:
+
−        form = PasswordChangeForm(request.user)
+
−    return render_to_response(template_name, {
+
−        'form': form,
+
−    }, context_instance=RequestContext(request))
+
−password_change = login_required(password_change)
+
−
+
−def password_change_done(request, template_name='registration/password_change_done.html'):
+
−    return render_to_response(template_name, context_instance=RequestContext(request))