from django.contrib.auth.models import User from django.contrib.auth import authenticate from django.contrib.auth.tokens import default_token_generator from django.contrib.sites.models import Site from django.template import Context, loader from django import forms from django.utils.translation import ugettext_lazy as _ from django.utils.http import int_to_base36 class UserCreationForm(forms.ModelForm): """ A form that creates a user, with no privileges, from the given username and password. """ username = forms.RegexField(label=_("Username"), max_length=30, regex=r'^[\w.@+-]+$', help_text = _("Required. 30 characters or fewer. Letters, digits and @/./+/-/_ only."), error_messages = {'invalid': _("This value may contain only letters, numbers and @/./+/-/_ characters.")}) password1 = forms.CharField(label=_("Password"), widget=forms.PasswordInput) password2 = forms.CharField(label=_("Password confirmation"), widget=forms.PasswordInput, help_text = _("Enter the same password as above, for verification.")) class Meta: model = User fields = ("username",) def clean_username(self): username = self.cleaned_data["username"] try: User.objects.get(username=username) except User.DoesNotExist: return username raise forms.ValidationError(_("A user with that username already exists.")) def clean_password2(self): password1 = self.cleaned_data.get("password1", "") password2 = self.cleaned_data["password2"] if password1 != password2: raise forms.ValidationError(_("The two password fields didn't match.")) return password2 def save(self, commit=True): user = super(UserCreationForm, self).save(commit=False) user.set_password(self.cleaned_data["password1"]) if commit: user.save() return user class UserChangeForm(forms.ModelForm): username = forms.RegexField(label=_("Username"), max_length=30, regex=r'^[\w.@+-]+$', help_text = _("Required. 30 characters or fewer. Letters, digits and @/./+/-/_ only."), error_messages = {'invalid': _("This value may contain only letters, numbers and @/./+/-/_ characters.")}) class Meta: model = User class AuthenticationForm(forms.Form): """ Base class for authenticating users. Extend this to get a form that accepts username/password logins. """ username = forms.CharField(label=_("Username"), max_length=30) password = forms.CharField(label=_("Password"), widget=forms.PasswordInput) def __init__(self, request=None, *args, **kwargs): """ If request is passed in, the form will validate that cookies are enabled. Note that the request (a HttpRequest object) must have set a cookie with the key TEST_COOKIE_NAME and value TEST_COOKIE_VALUE before running this validation. """ self.request = request self.user_cache = None super(AuthenticationForm, self).__init__(*args, **kwargs) def clean(self): username = self.cleaned_data.get('username') password = self.cleaned_data.get('password') if username and password: self.user_cache = authenticate(username=username, password=password) if self.user_cache is None: raise forms.ValidationError(_("Please enter a correct username and password. Note that both fields are case-sensitive.")) elif not self.user_cache.is_active: raise forms.ValidationError(_("This account is inactive.")) # TODO: determine whether this should move to its own method. if self.request: if not self.request.session.test_cookie_worked(): raise forms.ValidationError(_("Your Web browser doesn't appear to have cookies enabled. Cookies are required for logging in.")) return self.cleaned_data def get_user_id(self): if self.user_cache: return self.user_cache.id return None def get_user(self): return self.user_cache class PasswordResetForm(forms.Form): email = forms.EmailField(label=_("E-mail"), max_length=75) def clean_email(self): """ Validates that a user exists with the given e-mail address. """ email = self.cleaned_data["email"] self.users_cache = User.objects.filter(email__iexact=email) if len(self.users_cache) == 0: raise forms.ValidationError(_("That e-mail address doesn't have an associated user account. Are you sure you've registered?")) return email def save(self, domain_override=None, email_template_name='registration/password_reset_email.html', use_https=False, token_generator=default_token_generator): """ Generates a one-use only link for resetting password and sends to the user """ from django.core.mail import send_mail for user in self.users_cache: if not domain_override: current_site = Site.objects.get_current() site_name = current_site.name domain = current_site.domain else: site_name = domain = domain_override t = loader.get_template(email_template_name) c = { 'email': user.email, 'domain': domain, 'site_name': site_name, 'uid': int_to_base36(user.id), 'user': user, 'token': token_generator.make_token(user), 'protocol': use_https and 'https' or 'http', } send_mail(_("Password reset on %s") % site_name, t.render(Context(c)), None, [user.email]) class SetPasswordForm(forms.Form): """ A form that lets a user change set his/her password without entering the old password """ new_password1 = forms.CharField(label=_("New password"), widget=forms.PasswordInput) new_password2 = forms.CharField(label=_("New password confirmation"), widget=forms.PasswordInput) def __init__(self, user, *args, **kwargs): self.user = user super(SetPasswordForm, self).__init__(*args, **kwargs) def clean_new_password2(self): password1 = self.cleaned_data.get('new_password1') password2 = self.cleaned_data.get('new_password2') if password1 and password2: if password1 != password2: raise forms.ValidationError(_("The two password fields didn't match.")) return password2 def save(self, commit=True): self.user.set_password(self.cleaned_data['new_password1']) if commit: self.user.save() return self.user class PasswordChangeForm(SetPasswordForm): """ A form that lets a user change his/her password by entering their old password. """ old_password = forms.CharField(label=_("Old password"), widget=forms.PasswordInput) def clean_old_password(self): """ Validates that the old_password field is correct. """ old_password = self.cleaned_data["old_password"] if not self.user.check_password(old_password): raise forms.ValidationError(_("Your old password was entered incorrectly. Please enter it again.")) return old_password PasswordChangeForm.base_fields.keyOrder = ['old_password', 'new_password1', 'new_password2'] class AdminPasswordChangeForm(forms.Form): """ A form used to change the password of a user in the admin interface. """ password1 = forms.CharField(label=_("Password"), widget=forms.PasswordInput) password2 = forms.CharField(label=_("Password (again)"), widget=forms.PasswordInput) def __init__(self, user, *args, **kwargs): self.user = user super(AdminPasswordChangeForm, self).__init__(*args, **kwargs) def clean_password2(self): password1 = self.cleaned_data.get('password1') password2 = self.cleaned_data.get('password2') if password1 and password2: if password1 != password2: raise forms.ValidationError(_("The two password fields didn't match.")) return password2 def save(self, commit=True): """ Saves the new password. """ self.user.set_password(self.cleaned_data["password1"]) if commit: self.user.save() return self.user