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from django.contrib.auth.models import User
from django.contrib.auth import authenticate
from django.contrib.sites.models import Site
from django.template import Context, loader
from django.core import validators
from django import forms
class AuthenticationForm(forms.Manipulator):
"""
Base class for authenticating users. Extend this to get a form that accepts
username/password logins.
"""
def __init__(self, request=None):
"""
If request is passed in, the manipulator 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 validator.
"""
self.request = request
self.fields = [
forms.TextField(field_name="username", length=15, maxlength=30, is_required=True,
validator_list=[self.isValidUser, self.hasCookiesEnabled]),
forms.PasswordField(field_name="password", length=15, maxlength=30, is_required=True),
]
self.user_cache = None
def hasCookiesEnabled(self, field_data, all_data):
if self.request and not self.request.session.test_cookie_worked():
raise validators.ValidationError, _("Your Web browser doesn't appear to have cookies enabled. Cookies are required for logging in.")
def isValidUser(self, field_data, all_data):
username = field_data
password = all_data.get('password', None)
self.user_cache = authenticate(username=username, password=password)
if self.user_cache is None:
raise validators.ValidationError, _("Please enter a correct username and password. Note that both fields are case-sensitive.")
elif not self.user_cache.is_active:
raise validators.ValidationError, _("This account is inactive.")
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.Manipulator):
"A form that lets a user request a password reset"
def __init__(self):
self.fields = (
forms.EmailField(field_name="email", length=40, is_required=True,
validator_list=[self.isValidUserEmail]),
)
def isValidUserEmail(self, new_data, all_data):
"Validates that a user exists with the given e-mail address"
try:
self.user_cache = User.objects.get(email__iexact=new_data)
except User.DoesNotExist:
raise validators.ValidationError, "That e-mail address doesn't have an associated user acount. Are you sure you've registered?"
def save(self, domain_override=None, email_template_name='registration/password_reset_email.html'):
"Calculates a new password randomly and sends it to the user"
from django.core.mail import send_mail
new_pass = User.objects.make_random_password()
self.user_cache.set_password(new_pass)
self.user_cache.save()
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 = {
'new_password': new_pass,
'email': self.user_cache.email,
'domain': domain,
'site_name': site_name,
'user': self.user_cache,
}
send_mail('Password reset on %s' % site_name, t.render(Context(c)), None, [self.user_cache.email])
class PasswordChangeForm(forms.Manipulator):
"A form that lets a user change his password."
def __init__(self, user):
self.user = user
self.fields = (
forms.PasswordField(field_name="old_password", length=30, maxlength=30, is_required=True,
validator_list=[self.isValidOldPassword]),
forms.PasswordField(field_name="new_password1", length=30, maxlength=30, is_required=True,
validator_list=[validators.AlwaysMatchesOtherField('new_password2', "The two 'new password' fields didn't match.")]),
forms.PasswordField(field_name="new_password2", length=30, maxlength=30, is_required=True),
)
def isValidOldPassword(self, new_data, all_data):
"Validates that the old_password field is correct."
if not self.user.check_password(new_data):
raise validators.ValidationError, "Your old password was entered incorrectly. Please enter it again."
def save(self, new_data):
"Saves the new password."
self.user.set_password(new_data['new_password1'])
self.user.save()
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