350 lines
13 KiB
Python
350 lines
13 KiB
Python
from __future__ import unicode_literals
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from django import forms
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from django.forms.util import flatatt
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from django.template import loader
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from django.utils.datastructures import SortedDict
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from django.utils.html import format_html, format_html_join
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from django.utils.http import int_to_base36
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from django.utils.safestring import mark_safe
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from django.utils.text import capfirst
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from django.utils.translation import ugettext, ugettext_lazy as _
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from django.contrib.auth import authenticate, get_user_model
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from django.contrib.auth.models import User
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from django.contrib.auth.hashers import UNUSABLE_PASSWORD, identify_hasher
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from django.contrib.auth.tokens import default_token_generator
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from django.contrib.sites.models import get_current_site
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UNMASKED_DIGITS_TO_SHOW = 6
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mask_password = lambda p: "%s%s" % (p[:UNMASKED_DIGITS_TO_SHOW], "*" * max(len(p) - UNMASKED_DIGITS_TO_SHOW, 0))
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class ReadOnlyPasswordHashWidget(forms.Widget):
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def render(self, name, value, attrs):
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encoded = value
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final_attrs = self.build_attrs(attrs)
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if encoded == '' or encoded == UNUSABLE_PASSWORD:
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summary = mark_safe("<strong>%s</strong>" % ugettext("No password set."))
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else:
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try:
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hasher = identify_hasher(encoded)
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except ValueError:
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summary = mark_safe("<strong>%s</strong>" % ugettext(
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"Invalid password format or unknown hashing algorithm."))
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else:
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summary = format_html_join('',
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"<strong>{0}</strong>: {1} ",
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((ugettext(key), value)
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for key, value in hasher.safe_summary(encoded).items())
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)
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return format_html("<div{0}>{1}</div>", flatatt(final_attrs), summary)
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class ReadOnlyPasswordHashField(forms.Field):
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widget = ReadOnlyPasswordHashWidget
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def __init__(self, *args, **kwargs):
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kwargs.setdefault("required", False)
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super(ReadOnlyPasswordHashField, self).__init__(*args, **kwargs)
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class UserCreationForm(forms.ModelForm):
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"""
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A form that creates a user, with no privileges, from the given username and
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password.
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"""
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error_messages = {
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'duplicate_username': _("A user with that username already exists."),
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'password_mismatch': _("The two password fields didn't match."),
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}
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username = forms.RegexField(label=_("Username"), max_length=30,
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regex=r'^[\w.@+-]+$',
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help_text=_("Required. 30 characters or fewer. Letters, digits and "
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"@/./+/-/_ only."),
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error_messages={
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'invalid': _("This value may contain only letters, numbers and "
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"@/./+/-/_ characters.")})
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password1 = forms.CharField(label=_("Password"),
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widget=forms.PasswordInput)
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password2 = forms.CharField(label=_("Password confirmation"),
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widget=forms.PasswordInput,
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help_text=_("Enter the same password as above, for verification."))
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class Meta:
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model = User
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fields = ("username",)
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def clean_username(self):
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# Since User.username is unique, this check is redundant,
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# but it sets a nicer error message than the ORM. See #13147.
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username = self.cleaned_data["username"]
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try:
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User.objects.get(username=username)
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except User.DoesNotExist:
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return username
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raise forms.ValidationError(self.error_messages['duplicate_username'])
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def clean_password2(self):
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password1 = self.cleaned_data.get("password1")
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password2 = self.cleaned_data.get("password2")
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if password1 and password2 and password1 != password2:
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raise forms.ValidationError(
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self.error_messages['password_mismatch'])
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return password2
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def save(self, commit=True):
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user = super(UserCreationForm, self).save(commit=False)
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user.set_password(self.cleaned_data["password1"])
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if commit:
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user.save()
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return user
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class UserChangeForm(forms.ModelForm):
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username = forms.RegexField(
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label=_("Username"), max_length=30, regex=r"^[\w.@+-]+$",
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help_text=_("Required. 30 characters or fewer. Letters, digits and "
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"@/./+/-/_ only."),
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error_messages={
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'invalid': _("This value may contain only letters, numbers and "
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"@/./+/-/_ characters.")})
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password = ReadOnlyPasswordHashField(label=_("Password"),
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help_text=_("Raw passwords are not stored, so there is no way to see "
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"this user's password, but you can change the password "
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"using <a href=\"password/\">this form</a>."))
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class Meta:
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model = User
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def __init__(self, *args, **kwargs):
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super(UserChangeForm, self).__init__(*args, **kwargs)
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f = self.fields.get('user_permissions', None)
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if f is not None:
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f.queryset = f.queryset.select_related('content_type')
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def clean_password(self):
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# Regardless of what the user provides, return the initial value.
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# This is done here, rather than on the field, because the
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# field does not have access to the initial value
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return self.initial["password"]
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class AuthenticationForm(forms.Form):
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"""
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Base class for authenticating users. Extend this to get a form that accepts
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username/password logins.
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"""
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username = forms.CharField(max_length=254)
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password = forms.CharField(label=_("Password"), widget=forms.PasswordInput)
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error_messages = {
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'invalid_login': _("Please enter a correct username and password. "
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"Note that both fields are case-sensitive."),
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'no_cookies': _("Your Web browser doesn't appear to have cookies "
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"enabled. Cookies are required for logging in."),
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'inactive': _("This account is inactive."),
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}
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def __init__(self, request=None, *args, **kwargs):
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"""
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If request is passed in, the form will validate that cookies are
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enabled. Note that the request (a HttpRequest object) must have set a
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cookie with the key TEST_COOKIE_NAME and value TEST_COOKIE_VALUE before
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running this validation.
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"""
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self.request = request
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self.user_cache = None
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super(AuthenticationForm, self).__init__(*args, **kwargs)
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# Set the label for the "username" field.
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UserModel = get_user_model()
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username_field = UserModel._meta.get_field(UserModel.USERNAME_FIELD)
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self.fields['username'].label = capfirst(username_field.verbose_name)
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def clean(self):
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username = self.cleaned_data.get('username')
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password = self.cleaned_data.get('password')
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if username and password:
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self.user_cache = authenticate(username=username,
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password=password)
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if self.user_cache is None:
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raise forms.ValidationError(
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self.error_messages['invalid_login'])
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elif not self.user_cache.is_active:
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raise forms.ValidationError(self.error_messages['inactive'])
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self.check_for_test_cookie()
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return self.cleaned_data
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def check_for_test_cookie(self):
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if self.request and not self.request.session.test_cookie_worked():
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raise forms.ValidationError(self.error_messages['no_cookies'])
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def get_user_id(self):
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if self.user_cache:
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return self.user_cache.id
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return None
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def get_user(self):
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return self.user_cache
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class PasswordResetForm(forms.Form):
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error_messages = {
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'unknown': _("That email address doesn't have an associated "
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"user account. Are you sure you've registered?"),
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'unusable': _("The user account associated with this email "
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"address cannot reset the password."),
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}
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email = forms.EmailField(label=_("Email"), max_length=254)
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def clean_email(self):
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"""
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Validates that an active user exists with the given email address.
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"""
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UserModel = get_user_model()
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email = self.cleaned_data["email"]
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self.users_cache = UserModel.objects.filter(email__iexact=email)
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if not len(self.users_cache):
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raise forms.ValidationError(self.error_messages['unknown'])
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if not any(user.is_active for user in self.users_cache):
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# none of the filtered users are active
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raise forms.ValidationError(self.error_messages['unknown'])
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if any((user.password == UNUSABLE_PASSWORD)
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for user in self.users_cache):
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raise forms.ValidationError(self.error_messages['unusable'])
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return email
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def save(self, domain_override=None,
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subject_template_name='registration/password_reset_subject.txt',
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email_template_name='registration/password_reset_email.html',
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use_https=False, token_generator=default_token_generator,
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from_email=None, request=None):
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"""
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Generates a one-use only link for resetting password and sends to the
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user.
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"""
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from django.core.mail import send_mail
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for user in self.users_cache:
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if not domain_override:
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current_site = get_current_site(request)
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site_name = current_site.name
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domain = current_site.domain
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else:
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site_name = domain = domain_override
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c = {
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'email': user.email,
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'domain': domain,
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'site_name': site_name,
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'uid': int_to_base36(user.id),
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'user': user,
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'token': token_generator.make_token(user),
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'protocol': use_https and 'https' or 'http',
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}
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subject = loader.render_to_string(subject_template_name, c)
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# Email subject *must not* contain newlines
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subject = ''.join(subject.splitlines())
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email = loader.render_to_string(email_template_name, c)
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send_mail(subject, email, from_email, [user.email])
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class SetPasswordForm(forms.Form):
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"""
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A form that lets a user change set his/her password without entering the
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old password
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"""
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error_messages = {
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'password_mismatch': _("The two password fields didn't match."),
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}
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new_password1 = forms.CharField(label=_("New password"),
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widget=forms.PasswordInput)
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new_password2 = forms.CharField(label=_("New password confirmation"),
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widget=forms.PasswordInput)
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def __init__(self, user, *args, **kwargs):
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self.user = user
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super(SetPasswordForm, self).__init__(*args, **kwargs)
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def clean_new_password2(self):
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password1 = self.cleaned_data.get('new_password1')
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password2 = self.cleaned_data.get('new_password2')
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if password1 and password2:
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if password1 != password2:
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raise forms.ValidationError(
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self.error_messages['password_mismatch'])
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return password2
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def save(self, commit=True):
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self.user.set_password(self.cleaned_data['new_password1'])
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if commit:
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self.user.save()
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return self.user
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class PasswordChangeForm(SetPasswordForm):
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"""
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A form that lets a user change his/her password by entering
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their old password.
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"""
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error_messages = dict(SetPasswordForm.error_messages, **{
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'password_incorrect': _("Your old password was entered incorrectly. "
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"Please enter it again."),
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})
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old_password = forms.CharField(label=_("Old password"),
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widget=forms.PasswordInput)
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def clean_old_password(self):
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"""
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Validates that the old_password field is correct.
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"""
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old_password = self.cleaned_data["old_password"]
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if not self.user.check_password(old_password):
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raise forms.ValidationError(
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self.error_messages['password_incorrect'])
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return old_password
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PasswordChangeForm.base_fields = SortedDict([
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(k, PasswordChangeForm.base_fields[k])
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for k in ['old_password', 'new_password1', 'new_password2']
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])
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class AdminPasswordChangeForm(forms.Form):
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"""
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A form used to change the password of a user in the admin interface.
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"""
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error_messages = {
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'password_mismatch': _("The two password fields didn't match."),
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}
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password1 = forms.CharField(label=_("Password"),
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widget=forms.PasswordInput)
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password2 = forms.CharField(label=_("Password (again)"),
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widget=forms.PasswordInput)
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def __init__(self, user, *args, **kwargs):
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self.user = user
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super(AdminPasswordChangeForm, self).__init__(*args, **kwargs)
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def clean_password2(self):
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password1 = self.cleaned_data.get('password1')
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password2 = self.cleaned_data.get('password2')
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if password1 and password2:
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if password1 != password2:
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raise forms.ValidationError(
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self.error_messages['password_mismatch'])
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return password2
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def save(self, commit=True):
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"""
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Saves the new password.
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"""
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self.user.set_password(self.cleaned_data["password1"])
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if commit:
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self.user.save()
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return self.user
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