256 lines
9.9 KiB
Python
256 lines
9.9 KiB
Python
"""passbook core authentication views"""
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from logging import getLogger
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from typing import Dict
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from django.contrib import messages
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from django.contrib.auth import login, logout
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from django.contrib.auth.mixins import LoginRequiredMixin, UserPassesTestMixin
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from django.forms.utils import ErrorList
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from django.http import HttpRequest, HttpResponse
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from django.shortcuts import get_object_or_404, redirect, reverse
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from django.utils.translation import ugettext as _
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from django.views import View
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from django.views.generic import FormView
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from passbook.core.auth.view import AuthenticationView, _redirect_with_qs
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from passbook.core.exceptions import PasswordPolicyInvalid
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from passbook.core.forms.authentication import LoginForm, SignUpForm
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from passbook.core.models import Invitation, Nonce, Source, User
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from passbook.core.signals import invitation_used, user_signed_up
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from passbook.core.tasks import send_email
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from passbook.lib.config import CONFIG
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LOGGER = getLogger(__name__)
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class LoginView(UserPassesTestMixin, FormView):
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"""Allow users to sign in"""
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template_name = 'login/form.html'
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form_class = LoginForm
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success_url = '.'
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# Allow only not authenticated users to login
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def test_func(self):
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return self.request.user.is_authenticated is False
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def handle_no_permission(self):
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if 'next' in self.request.GET:
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return redirect(self.request.GET.get('next'))
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return redirect(reverse('passbook_core:overview'))
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def get_context_data(self, **kwargs):
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kwargs['config'] = CONFIG.get('passbook')
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kwargs['is_login'] = True
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kwargs['title'] = _('Log in to your account')
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kwargs['primary_action'] = _('Log in')
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kwargs['show_sign_up_notice'] = CONFIG.y('passbook.sign_up.enabled')
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kwargs['sources'] = []
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sources = Source.objects.filter(enabled=True).select_subclasses()
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if any(source.is_link for source in sources):
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for source in sources:
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kwargs['sources'].append(source.get_login_button)
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self.template_name = 'login/with_sources.html'
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return super().get_context_data(**kwargs)
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def get_user(self, uid_value) -> User:
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"""Find user instance. Returns None if no user was found."""
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for search_field in CONFIG.y('passbook.uid_fields'):
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# Workaround for E-Mail -> email
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if search_field == 'e-mail':
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search_field = 'email'
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users = User.objects.filter(**{search_field: uid_value})
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if users.exists():
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LOGGER.debug("Found user %s with uid_field %s", users.first(), search_field)
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return users.first()
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return None
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def form_valid(self, form: LoginForm) -> HttpResponse:
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"""Form data is valid"""
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pre_user = self.get_user(form.cleaned_data.get('uid_field'))
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if not pre_user:
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# No user found
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return self.invalid_login(self.request)
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self.request.session.flush()
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self.request.session[AuthenticationView.SESSION_PENDING_USER] = pre_user.pk
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return _redirect_with_qs('passbook_core:auth-process', self.request.GET)
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def invalid_login(self, request: HttpRequest, disabled_user: User = None) -> HttpResponse:
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"""Handle login for disabled users/invalid login attempts"""
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messages.error(request, _('Failed to authenticate.'))
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return self.render_to_response(self.get_context_data())
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class LogoutView(LoginRequiredMixin, View):
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"""Log current user out"""
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def dispatch(self, request):
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"""Log current user out"""
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logout(request)
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messages.success(request, _("You've successfully been logged out."))
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return redirect(reverse('passbook_core:auth-login'))
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class SignUpView(UserPassesTestMixin, FormView):
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"""Sign up new user, optionally consume one-use invitation link."""
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template_name = 'login/form.html'
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form_class = SignUpForm
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success_url = '.'
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# Invitation insatnce, if invitation link was used
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_invitation = None
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# Instance of newly created user
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_user = None
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# Allow only not authenticated users to login
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def test_func(self):
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return self.request.user.is_authenticated is False
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def handle_no_permission(self):
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return redirect(reverse('passbook_core:overview'))
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def dispatch(self, request, *args, **kwargs):
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"""Check if sign-up is enabled or invitation link given"""
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allowed = False
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if 'invitation' in request.GET:
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invitations = Invitation.objects.filter(uuid=request.GET.get('invitation'))
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allowed = invitations.exists()
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if allowed:
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self._invitation = invitations.first()
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if CONFIG.y('passbook.sign_up.enabled'):
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allowed = True
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if not allowed:
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messages.error(request, _('Sign-ups are currently disabled.'))
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return redirect(reverse('passbook_core:auth-login'))
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return super().dispatch(request, *args, **kwargs)
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def get_initial(self):
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if self._invitation:
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initial = {}
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if self._invitation.fixed_username:
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initial['username'] = self._invitation.fixed_username
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if self._invitation.fixed_email:
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initial['email'] = self._invitation.fixed_email
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return initial
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return super().get_initial()
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def get_context_data(self, **kwargs):
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kwargs['config'] = CONFIG.get('passbook')
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kwargs['is_login'] = True
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kwargs['title'] = _('Sign Up')
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kwargs['primary_action'] = _('Sign up')
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return super().get_context_data(**kwargs)
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def form_valid(self, form: SignUpForm) -> HttpResponse:
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"""Create user"""
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try:
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self._user = SignUpView.create_user(form.cleaned_data, self.request)
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except PasswordPolicyInvalid as exc:
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# Manually inject error into form
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# pylint: disable=protected-access
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errors = form._errors.setdefault("password", ErrorList())
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for error in exc.messages:
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errors.append(error)
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return self.form_invalid(form)
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needs_confirmation = True
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if self._invitation and not self._invitation.needs_confirmation:
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needs_confirmation = False
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if needs_confirmation:
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nonce = Nonce.objects.create(user=self._user)
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LOGGER.debug(str(nonce.uuid))
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# Send email to user
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send_email.delay(self._user.email, _('Confirm your account.'),
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'email/account_confirm.html', {
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'url': self.request.build_absolute_uri(
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reverse('passbook_core:auth-sign-up-confirm', kwargs={
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'nonce': nonce.uuid
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})
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)
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})
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self._user.is_active = False
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self._user.save()
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self.consume_invitation()
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messages.success(self.request, _("Successfully signed up!"))
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LOGGER.debug("Successfully signed up %s",
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form.cleaned_data.get('email'))
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return redirect(reverse('passbook_core:auth-login'))
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def consume_invitation(self):
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"""Consume invitation if an invitation was used"""
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if self._invitation:
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invitation_used.send(
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sender=self,
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request=self.request,
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invitation=self._invitation,
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user=self._user)
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self._invitation.delete()
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@staticmethod
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def create_user(data: Dict, request: HttpRequest = None) -> User:
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"""Create user from data
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Args:
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data: Dictionary as returned by SignUpForm's cleaned_data
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request: Optional current request.
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Returns:
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The user created
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Raises:
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PasswordPolicyInvalid: if any policy are not fulfilled.
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This also deletes the created user.
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"""
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# Create user
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new_user = User.objects.create(
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username=data.get('username'),
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email=data.get('email'),
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first_name=data.get('first_name'),
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last_name=data.get('last_name'),
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)
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new_user.is_active = True
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try:
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new_user.set_password(data.get('password'))
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new_user.save()
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request.user = new_user
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# Send signal for other auth sources
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user_signed_up.send(
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sender=SignUpView,
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user=new_user,
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request=request)
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return new_user
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except PasswordPolicyInvalid as exc:
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new_user.delete()
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raise exc
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class SignUpConfirmView(View):
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"""Confirm registration from Nonce"""
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def get(self, request, nonce):
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"""Verify UUID and activate user"""
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nonce = get_object_or_404(Nonce, uuid=nonce)
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nonce.user.is_active = True
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nonce.user.save()
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# Workaround: hardcoded reference to ModelBackend, needs testing
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nonce.user.backend = 'django.contrib.auth.backends.ModelBackend'
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login(request, nonce.user)
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nonce.delete()
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messages.success(request, _('Successfully confirmed registration.'))
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return redirect('passbook_core:overview')
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class PasswordResetView(View):
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"""Temporarily authenticate User and allow them to reset their password"""
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def get(self, request, nonce):
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"""Authenticate user with nonce and redirect to password change view"""
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# 3. (Optional) Trap user in password change view
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nonce = get_object_or_404(Nonce, uuid=nonce)
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# Workaround: hardcoded reference to ModelBackend, needs testing
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nonce.user.backend = 'django.contrib.auth.backends.ModelBackend'
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login(request, nonce.user)
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nonce.delete()
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messages.success(request, _(('Temporarily authenticated with Nonce, '
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'please change your password')))
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return redirect('passbook_core:user-change-password')
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