1 from django.contrib.auth.models import User

     2 from django.contrib.auth import authenticate

     3 from django.contrib.sites.models import Site

     4 from django.template import Context, loader

     5 from django.core import validators

     6 from django import oldforms

     7 from django.utils.translation import ugettext as _

     8 

     9 class UserCreationForm(oldforms.Manipulator):

    10     "A form that creates a user, with no privileges, from the given username and password."

    11     def __init__(self):

    12         self.fields = (

    13             oldforms.TextField(field_name='username', length=30, max_length=30, is_required=True,

    14                 validator_list=[validators.isAlphaNumeric, self.isValidUsername]),

    15             oldforms.PasswordField(field_name='password1', length=30, max_length=60, is_required=True),

    16             oldforms.PasswordField(field_name='password2', length=30, max_length=60, is_required=True,

    17                 validator_list=[validators.AlwaysMatchesOtherField('password1', _("The two password fields didn't match."))]),

    18         )

    19 

    20     def isValidUsername(self, field_data, all_data):

    21         try:

    22             User.objects.get(username=field_data)

    23         except User.DoesNotExist:

    24             return

    25         raise validators.ValidationError, _('A user with that username already exists.')

    26 

    27     def save(self, new_data):

    28         "Creates the user."

    29         return User.objects.create_user(new_data['username'], '', new_data['password1'])

    30 

    31 class AuthenticationForm(oldforms.Manipulator):

    32     """

    33     Base class for authenticating users. Extend this to get a form that accepts

    34     username/password logins.

    35     """

    36     def __init__(self, request=None):

    37         """

    38         If request is passed in, the manipulator will validate that cookies are

    39         enabled. Note that the request (a HttpRequest object) must have set a

    40         cookie with the key TEST_COOKIE_NAME and value TEST_COOKIE_VALUE before

    41         running this validator.

    42         """

    43         self.request = request

    44         self.fields = [

    45             oldforms.TextField(field_name="username", length=15, max_length=30, is_required=True,

    46                 validator_list=[self.isValidUser, self.hasCookiesEnabled]),

    47             oldforms.PasswordField(field_name="password", length=15, max_length=30, is_required=True),

    48         ]

    49         self.user_cache = None

    50 

    51     def hasCookiesEnabled(self, field_data, all_data):

    52         if self.request and not self.request.session.test_cookie_worked():

    53             raise validators.ValidationError, _("Your Web browser doesn't appear to have cookies enabled. Cookies are required for logging in.")

    54 

    55     def isValidUser(self, field_data, all_data):

    56         username = field_data

    57         password = all_data.get('password', None)

    58         self.user_cache = authenticate(username=username, password=password)

    59         if self.user_cache is None:

    60             raise validators.ValidationError, _("Please enter a correct username and password. Note that both fields are case-sensitive.")

    61         elif not self.user_cache.is_active:

    62             raise validators.ValidationError, _("This account is inactive.")

    63 

    64     def get_user_id(self):

    65         if self.user_cache:

    66             return self.user_cache.id

    67         return None

    68 

    69     def get_user(self):

    70         return self.user_cache

    71 

    72 class PasswordResetForm(oldforms.Manipulator):

    73     "A form that lets a user request a password reset"

    74     def __init__(self):

    75         self.fields = (

    76             oldforms.EmailField(field_name="email", length=40, is_required=True,

    77                 validator_list=[self.isValidUserEmail]),

    78         )

    79 

    80     def isValidUserEmail(self, new_data, all_data):

    81         "Validates that a user exists with the given e-mail address"

    82         self.users_cache = list(User.objects.filter(email__iexact=new_data))

    83         if len(self.users_cache) == 0:

    84             raise validators.ValidationError, _("That e-mail address doesn't have an associated user account. Are you sure you've registered?")

    85 

    86     def save(self, domain_override=None, email_template_name='registration/password_reset_email.html'):

    87         "Calculates a new password randomly and sends it to the user"

    88         from django.core.mail import send_mail

    89         for user in self.users_cache:

    90             new_pass = User.objects.make_random_password()

    91             user.set_password(new_pass)

    92             user.save()

    93             if not domain_override:

    94                 current_site = Site.objects.get_current()

    95                 site_name = current_site.name

    96                 domain = current_site.domain

    97             else:

    98                 site_name = domain = domain_override

    99             t = loader.get_template(email_template_name)

   100             c = {

   101                 'new_password': new_pass,

   102                 'email': user.email,

   103                 'domain': domain,

   104                 'site_name': site_name,

   105                 'user': user,

   106                 }

   107             send_mail(_('Password reset on %s') % site_name, t.render(Context(c)), None, [user.email])

   108 

   109 class PasswordChangeForm(oldforms.Manipulator):

   110     "A form that lets a user change his password."

   111     def __init__(self, user):

   112         self.user = user

   113         self.fields = (

   114             oldforms.PasswordField(field_name="old_password", length=30, max_length=30, is_required=True,

   115                 validator_list=[self.isValidOldPassword]),

   116             oldforms.PasswordField(field_name="new_password1", length=30, max_length=30, is_required=True,

   117                 validator_list=[validators.AlwaysMatchesOtherField('new_password2', _("The two 'new password' fields didn't match."))]),

   118             oldforms.PasswordField(field_name="new_password2", length=30, max_length=30, is_required=True),

   119         )

   120 

   121     def isValidOldPassword(self, new_data, all_data):

   122         "Validates that the old_password field is correct."

   123         if not self.user.check_password(new_data):

   124             raise validators.ValidationError, _("Your old password was entered incorrectly. Please enter it again.")

   125 

   126     def save(self, new_data):

   127         "Saves the new password."

   128         self.user.set_password(new_data['new_password1'])

   129         self.user.save()

   130 

   131 class AdminPasswordChangeForm(oldforms.Manipulator):

   132     "A form used to change the password of a user in the admin interface."

   133     def __init__(self, user):

   134         self.user = user

   135         self.fields = (

   136             oldforms.PasswordField(field_name='password1', length=30, max_length=60, is_required=True),

   137             oldforms.PasswordField(field_name='password2', length=30, max_length=60, is_required=True,

   138                 validator_list=[validators.AlwaysMatchesOtherField('password1', _("The two password fields didn't match."))]),

   139         )

   140 

   141     def save(self, new_data):

   142         "Saves the new password."

   143         self.user.set_password(new_data['password1'])

   144         self.user.save()