mirror of https://github.com/zulip/zulip.git
301 lines
13 KiB
Python
301 lines
13 KiB
Python
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from django import forms
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from django.conf import settings
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from django.contrib.auth.forms import SetPasswordForm, AuthenticationForm, \
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PasswordResetForm
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from django.core.exceptions import ValidationError
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from django.core.urlresolvers import reverse
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from django.core.validators import validate_email
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from django.db.models.query import QuerySet
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from django.utils.translation import ugettext as _
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from jinja2 import Markup as mark_safe
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from zerver.lib.actions import do_change_password, user_email_is_unique, \
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validate_email_for_realm
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from zerver.lib.name_restrictions import is_reserved_subdomain, is_disposable_domain
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from zerver.lib.request import JsonableError
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from zerver.lib.send_email import send_email, FromAddress
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from zerver.lib.users import check_full_name
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from zerver.lib.utils import get_subdomain, check_subdomain
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from zerver.models import Realm, get_user_profile_by_email, UserProfile, \
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get_realm_by_email_domain, get_realm, \
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get_unique_open_realm, email_to_domain, email_allowed_for_realm
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from zproject.backends import password_auth_enabled
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import logging
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import re
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import DNS
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from typing import Any, Callable, List, Optional, Text, Dict
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MIT_VALIDATION_ERROR = u'That user does not exist at MIT or is a ' + \
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u'<a href="https://ist.mit.edu/email-lists">mailing list</a>. ' + \
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u'If you want to sign up an alias for Zulip, ' + \
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u'<a href="mailto:support@zulipchat.com">contact us</a>.'
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WRONG_SUBDOMAIN_ERROR = "Your Zulip account is not a member of the " + \
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"organization associated with this subdomain. " + \
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"Please contact %s with any questions!" % (FromAddress.SUPPORT,)
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def email_is_not_mit_mailing_list(email):
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# type: (Text) -> None
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"""Prevent MIT mailing lists from signing up for Zulip"""
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if "@mit.edu" in email:
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username = email.rsplit("@", 1)[0]
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# Check whether the user exists and can get mail.
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try:
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DNS.dnslookup("%s.pobox.ns.athena.mit.edu" % username, DNS.Type.TXT)
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except DNS.Base.ServerError as e:
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if e.rcode == DNS.Status.NXDOMAIN:
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raise ValidationError(mark_safe(MIT_VALIDATION_ERROR))
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else:
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raise
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class RegistrationForm(forms.Form):
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MAX_PASSWORD_LENGTH = 100
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full_name = forms.CharField(max_length=UserProfile.MAX_NAME_LENGTH)
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# The required-ness of the password field gets overridden if it isn't
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# actually required for a realm
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password = forms.CharField(widget=forms.PasswordInput, max_length=MAX_PASSWORD_LENGTH)
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realm_subdomain = forms.CharField(max_length=Realm.MAX_REALM_SUBDOMAIN_LENGTH, required=False)
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def __init__(self, *args, **kwargs):
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# type: (*Any, **Any) -> None
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# Since the superclass doesn't except random extra kwargs, we
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# remove it from the kwargs dict before initializing.
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realm_creation = kwargs['realm_creation']
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del kwargs['realm_creation']
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super(RegistrationForm, self).__init__(*args, **kwargs)
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if settings.TERMS_OF_SERVICE:
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self.fields['terms'] = forms.BooleanField(required=True)
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self.fields['realm_name'] = forms.CharField(
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max_length=Realm.MAX_REALM_NAME_LENGTH,
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required=realm_creation)
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def clean_full_name(self):
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# type: () -> Text
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try:
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return check_full_name(self.cleaned_data['full_name'])
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except JsonableError as e:
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raise ValidationError(e.msg)
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def clean_realm_subdomain(self):
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# type: () -> str
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if settings.REALMS_HAVE_SUBDOMAINS:
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error_strings = {
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'too short': _("Subdomain needs to have length 3 or greater."),
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'extremal dash': _("Subdomain cannot start or end with a '-'."),
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'bad character': _("Subdomain can only have lowercase letters, numbers, and '-'s."),
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'unavailable': _("Subdomain unavailable. Please choose a different one.")}
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else:
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error_strings = {
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'too short': _("Short name needs at least 3 characters."),
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'extremal dash': _("Short name cannot start or end with a '-'."),
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'bad character': _("Short name can only have lowercase letters, numbers, and '-'s."),
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'unavailable': _("Short name unavailable. Please choose a different one.")}
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subdomain = self.cleaned_data['realm_subdomain']
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if not subdomain:
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return ''
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if len(subdomain) < 3:
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raise ValidationError(error_strings['too short'])
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if subdomain[0] == '-' or subdomain[-1] == '-':
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raise ValidationError(error_strings['extremal dash'])
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if not re.match('^[a-z0-9-]*$', subdomain):
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raise ValidationError(error_strings['bad character'])
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if is_reserved_subdomain(subdomain) or \
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get_realm(subdomain) is not None:
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raise ValidationError(error_strings['unavailable'])
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return subdomain
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class ToSForm(forms.Form):
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terms = forms.BooleanField(required=True)
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class HomepageForm(forms.Form):
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email = forms.EmailField()
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def __init__(self, *args, **kwargs):
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# type: (*Any, **Any) -> None
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self.realm = kwargs.pop('realm', None)
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self.from_multiuse_invite = kwargs.pop('from_multiuse_invite', False)
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super(HomepageForm, self).__init__(*args, **kwargs)
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def clean_email(self):
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# type: () -> str
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"""Returns the email if and only if the user's email address is
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allowed to join the realm they are trying to join."""
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email = self.cleaned_data['email']
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if get_unique_open_realm():
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return email
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# Otherwise, the user is trying to join a specific realm.
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realm = self.realm
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from_multiuse_invite = self.from_multiuse_invite
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if realm is None and not settings.REALMS_HAVE_SUBDOMAINS:
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realm = get_realm_by_email_domain(email)
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if realm is None:
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if settings.REALMS_HAVE_SUBDOMAINS:
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raise ValidationError(_("The organization you are trying to "
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"join using {email} does not "
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"exist.").format(email=email))
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else:
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raise ValidationError(_("Your email address, {email}, does not "
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"correspond to any existing "
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"organization.").format(email=email))
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if not from_multiuse_invite and realm.invite_required:
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raise ValidationError(_("Please request an invite for {email} "
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"from the organization "
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"administrator.").format(email=email))
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if not email_allowed_for_realm(email, realm):
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raise ValidationError(
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_("Your email address, {email}, is not in one of the domains "
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"that are allowed to register for accounts in this organization.").format(
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string_id=realm.string_id, email=email))
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validate_email_for_realm(realm, email)
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if realm.is_zephyr_mirror_realm:
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email_is_not_mit_mailing_list(email)
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return email
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def email_is_not_disposable(email):
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# type: (Text) -> None
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if is_disposable_domain(email_to_domain(email)):
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raise ValidationError(_("Please use your real email address."))
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class RealmCreationForm(forms.Form):
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# This form determines whether users can create a new realm.
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email = forms.EmailField(validators=[user_email_is_unique, email_is_not_disposable])
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class LoggingSetPasswordForm(SetPasswordForm):
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def save(self, commit=True):
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# type: (bool) -> UserProfile
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do_change_password(self.user, self.cleaned_data['new_password1'],
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commit=commit)
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return self.user
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class ZulipPasswordResetForm(PasswordResetForm):
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def get_users(self, email):
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# type: (str) -> QuerySet
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"""Given an email, return matching user(s) who should receive a reset.
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This is modified from the original in that it allows non-bot
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users who don't have a usable password to reset their
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passwords.
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"""
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if not password_auth_enabled:
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logging.info("Password reset attempted for %s even though password auth is disabled." % (email,))
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return []
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result = UserProfile.objects.filter(email__iexact=email, is_active=True,
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is_bot=False)
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if len(result) == 0:
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logging.info("Password reset attempted for %s; no active account." % (email,))
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return result
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def send_mail(self, subject_template_name, email_template_name,
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context, from_email, to_email, html_email_template_name=None):
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# type: (str, str, Dict[str, Any], str, str, str) -> None
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"""
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Currently we don't support accounts in multiple subdomains using
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a single email address. We override this function so that we do
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not send a reset link to an email address if the reset attempt is
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done on the subdomain which does not match user.realm.subdomain.
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Once we start supporting accounts with the same email in
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multiple subdomains, we may be able to refactor this function.
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A second reason we override this function is so that we can send
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the mail through the functions in zerver.lib.send_email, to match
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how we send all other mail in the codebase.
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"""
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user = get_user_profile_by_email(to_email)
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attempted_subdomain = get_subdomain(getattr(self, 'request'))
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context['attempted_realm'] = False
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if not check_subdomain(user.realm.subdomain, attempted_subdomain):
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context['attempted_realm'] = get_realm(attempted_subdomain)
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send_email('zerver/emails/password_reset', to_user_id=user.id,
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from_name="Zulip Account Security",
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from_address=FromAddress.NOREPLY, context=context)
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def save(self, *args, **kwargs):
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# type: (*Any, **Any) -> None
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"""Currently we don't support accounts in multiple subdomains using
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a single email addresss. We override this function so that we can
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inject request parameter in context. This parameter will be used
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by send_mail function.
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Once we start supporting accounts with the same email in
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multiple subdomains, we may be able to delete or refactor this
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function.
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"""
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setattr(self, 'request', kwargs.get('request'))
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super(ZulipPasswordResetForm, self).save(*args, **kwargs)
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class CreateUserForm(forms.Form):
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full_name = forms.CharField(max_length=100)
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email = forms.EmailField()
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class OurAuthenticationForm(AuthenticationForm):
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def clean_username(self):
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# type: () -> str
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email = self.cleaned_data['username']
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try:
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user_profile = get_user_profile_by_email(email)
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except UserProfile.DoesNotExist:
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return email
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if user_profile.realm.deactivated:
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error_msg = u"""Sorry for the trouble, but %s has been deactivated.
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Please contact %s to reactivate this group.""" % (
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user_profile.realm.name,
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FromAddress.SUPPORT)
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raise ValidationError(mark_safe(error_msg))
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if not user_profile.is_active and not user_profile.is_mirror_dummy:
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error_msg = (
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u"Sorry for the trouble, but your account has been deactivated. "
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u"Please contact your organization administrator to reactivate it. "
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u"If you're not sure who that is, try contacting %s.") % (FromAddress.SUPPORT,)
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raise ValidationError(mark_safe(error_msg))
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if not check_subdomain(get_subdomain(self.request), user_profile.realm.subdomain):
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logging.warning("User %s attempted to password login to wrong subdomain %s" %
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(user_profile.email, get_subdomain(self.request)))
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raise ValidationError(mark_safe(WRONG_SUBDOMAIN_ERROR))
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return email
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class MultiEmailField(forms.Field):
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def to_python(self, emails):
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# type: (Text) -> List[Text]
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"""Normalize data to a list of strings."""
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if not emails:
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return []
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return [email.strip() for email in emails.split(',')]
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def validate(self, emails):
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# type: (List[Text]) -> None
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"""Check if value consists only of valid emails."""
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super(MultiEmailField, self).validate(emails)
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for email in emails:
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validate_email(email)
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class FindMyTeamForm(forms.Form):
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emails = MultiEmailField(
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help_text=_("Add up to 10 comma-separated email addresses."))
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def clean_emails(self):
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# type: () -> List[Text]
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emails = self.cleaned_data['emails']
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if len(emails) > 10:
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raise forms.ValidationError(_("Please enter at most 10 emails."))
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return emails
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