code.grnet.gr Git - astakos/blob - snf-astakos-app/astakos/im/forms.py

   1 # Copyright 2011-2012 GRNET S.A. All rights reserved.
   2 #
   3 # Redistribution and use in source and binary forms, with or
   4 # without modification, are permitted provided that the following
   5 # conditions are met:
   6 #
   7 #   1. Redistributions of source code must retain the above
   8 #      copyright notice, this list of conditions and the following
   9 #      disclaimer.
  10 #
  11 #   2. Redistributions in binary form must reproduce the above
  12 #      copyright notice, this list of conditions and the following
  13 #      disclaimer in the documentation and/or other materials
  14 #      provided with the distribution.
  15 #
  16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  23 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  26 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27 # POSSIBILITY OF SUCH DAMAGE.
  28 #
  29 # The views and conclusions contained in the software and
  30 # documentation are those of the authors and should not be
  31 # interpreted as representing official policies, either expressed
  32 # or implied, of GRNET S.A.
  33 from urlparse import urljoin
  34 from datetime import datetime
  35
  36 from django import forms
  37 from django.utils.translation import ugettext as _
  38 from django.contrib.auth.forms import UserCreationForm, AuthenticationForm, PasswordResetForm
  39 from django.core.mail import send_mail
  40 from django.contrib.auth.tokens import default_token_generator
  41 from django.template import Context, loader
  42 from django.utils.http import int_to_base36
  43 from django.core.urlresolvers import reverse
  44 from django.utils.functional import lazy
  45 from django.utils.safestring import mark_safe
  46 from django.contrib import messages
  47 from django.utils.encoding import smart_str
  48
  49 from astakos.im.models import AstakosUser, Invitation, get_latest_terms, EmailChange
  50 from astakos.im.settings import INVITATIONS_PER_LEVEL, DEFAULT_FROM_EMAIL, \
  51     BASEURL, SITENAME, RECAPTCHA_PRIVATE_KEY, DEFAULT_CONTACT_EMAIL, \
  52     RECAPTCHA_ENABLED, LOGGING_LEVEL
  53 from astakos.im.widgets import DummyWidget, RecaptchaWidget
  54 from astakos.im.functions import send_change_email
  55
  56 # since Django 1.4 use django.core.urlresolvers.reverse_lazy instead
  57 from astakos.im.util import reverse_lazy, reserved_email, get_query
  58
  59 import logging
  60 import hashlib
  61 import recaptcha.client.captcha as captcha
  62 from random import random
  63
  64 logger = logging.getLogger(__name__)
  65
  66 class LocalUserCreationForm(UserCreationForm):
  67     """
  68     Extends the built in UserCreationForm in several ways:
  69
  70     * Adds email, first_name, last_name, recaptcha_challenge_field, recaptcha_response_field field.
  71     * The username field isn't visible and it is assigned a generated id.
  72     * User created is not active.
  73     """
  74     recaptcha_challenge_field = forms.CharField(widget=DummyWidget)
  75     recaptcha_response_field = forms.CharField(widget=RecaptchaWidget, label='')
  76
  77     class Meta:
  78         model = AstakosUser
  79         fields = ("email", "first_name", "last_name", "has_signed_terms", "has_signed_terms")
  80
  81     def __init__(self, *args, **kwargs):
  82         """
  83         Changes the order of fields, and removes the username field.
  84         """
  85         request = kwargs.get('request', None)
  86         if request:
  87             kwargs.pop('request')
  88             self.ip = request.META.get('REMOTE_ADDR',
  89                                        request.META.get('HTTP_X_REAL_IP', None))
  90
  91         super(LocalUserCreationForm, self).__init__(*args, **kwargs)
  92         self.fields.keyOrder = ['email', 'first_name', 'last_name',
  93                                 'password1', 'password2']
  94         if get_latest_terms():
  95             self.fields.keyOrder.append('has_signed_terms')
  96         if RECAPTCHA_ENABLED:
  97             self.fields.keyOrder.extend(['recaptcha_challenge_field',
  98                                          'recaptcha_response_field',])
  99
 100         if 'has_signed_terms' in self.fields:
 101             # Overriding field label since we need to apply a link
 102             # to the terms within the label
 103             terms_link_html = '<a href="%s" target="_blank">%s</a>' \
 104                     % (reverse('latest_terms'), _("the terms"))
 105             self.fields['has_signed_terms'].label = \
 106                     mark_safe("I agree with %s" % terms_link_html)
 107
 108     def clean_email(self):
 109         email = self.cleaned_data['email']
 110         if not email:
 111             raise forms.ValidationError(_("This field is required"))
 112         if reserved_email(email):
 113             raise forms.ValidationError(_("This email is already used"))
 114         return email
 115
 116     def clean_has_signed_terms(self):
 117         has_signed_terms = self.cleaned_data['has_signed_terms']
 118         if not has_signed_terms:
 119             raise forms.ValidationError(_('You have to agree with the terms'))
 120         return has_signed_terms
 121
 122     def clean_recaptcha_response_field(self):
 123         if 'recaptcha_challenge_field' in self.cleaned_data:
 124             self.validate_captcha()
 125         return self.cleaned_data['recaptcha_response_field']
 126
 127     def clean_recaptcha_challenge_field(self):
 128         if 'recaptcha_response_field' in self.cleaned_data:
 129             self.validate_captcha()
 130         return self.cleaned_data['recaptcha_challenge_field']
 131
 132     def validate_captcha(self):
 133         rcf = self.cleaned_data['recaptcha_challenge_field']
 134         rrf = self.cleaned_data['recaptcha_response_field']
 135         check = captcha.submit(rcf, rrf, RECAPTCHA_PRIVATE_KEY, self.ip)
 136         if not check.is_valid:
 137             raise forms.ValidationError(_('You have not entered the correct words'))
 138
 139     def save(self, commit=True):
 140         """
 141         Saves the email, first_name and last_name properties, after the normal
 142         save behavior is complete.
 143         """
 144         user = super(LocalUserCreationForm, self).save(commit=False)
 145         user.renew_token()
 146         if commit:
 147             user.save()
 148             logger._log(LOGGING_LEVEL, 'Created user %s' % user.email, [])
 149         return user
 150
 151 class InvitedLocalUserCreationForm(LocalUserCreationForm):
 152     """
 153     Extends the LocalUserCreationForm: email is readonly.
 154     """
 155     class Meta:
 156         model = AstakosUser
 157         fields = ("email", "first_name", "last_name", "has_signed_terms")
 158
 159     def __init__(self, *args, **kwargs):
 160         """
 161         Changes the order of fields, and removes the username field.
 162         """
 163         super(InvitedLocalUserCreationForm, self).__init__(*args, **kwargs)
 164
 165         #set readonly form fields
 166         ro = ('email', 'username',)
 167         for f in ro:
 168             self.fields[f].widget.attrs['readonly'] = True
 169
 170
 171     def save(self, commit=True):
 172         user = super(InvitedLocalUserCreationForm, self).save(commit=False)
 173         level = user.invitation.inviter.level + 1
 174         user.level = level
 175         user.invitations = INVITATIONS_PER_LEVEL.get(level, 0)
 176         user.email_verified = True
 177         if commit:
 178             user.save()
 179         return user
 180
 181 class ThirdPartyUserCreationForm(forms.ModelForm):
 182     class Meta:
 183         model = AstakosUser
 184         fields = ("email", "first_name", "last_name", "third_party_identifier", "has_signed_terms")
 185
 186     def __init__(self, *args, **kwargs):
 187         """
 188         Changes the order of fields, and removes the username field.
 189         """
 190         self.request = kwargs.get('request', None)
 191         if self.request:
 192             kwargs.pop('request')
 193         super(ThirdPartyUserCreationForm, self).__init__(*args, **kwargs)
 194         self.fields.keyOrder = ['email', 'first_name', 'last_name', 'third_party_identifier']
 195         if get_latest_terms():
 196             self.fields.keyOrder.append('has_signed_terms')
 197         #set readonly form fields
 198         ro = ["third_party_identifier", "first_name", "last_name"]
 199         for f in ro:
 200             self.fields[f].widget.attrs['readonly'] = True
 201
 202         if 'has_signed_terms' in self.fields:
 203             # Overriding field label since we need to apply a link
 204             # to the terms within the label
 205             terms_link_html = '<a href="%s" target="_blank">%s</a>' \
 206                     % (reverse('latest_terms'), _("the terms"))
 207             self.fields['has_signed_terms'].label = \
 208                     mark_safe("I agree with %s" % terms_link_html)
 209
 210     def clean_email(self):
 211         email = self.cleaned_data['email']
 212         if not email:
 213             raise forms.ValidationError(_("This field is required"))
 214         return email
 215
 216     def clean_has_signed_terms(self):
 217         has_signed_terms = self.cleaned_data['has_signed_terms']
 218         if not has_signed_terms:
 219             raise forms.ValidationError(_('You have to agree with the terms'))
 220         return has_signed_terms
 221
 222     def save(self, commit=True):
 223         user = super(ThirdPartyUserCreationForm, self).save(commit=False)
 224         user.set_unusable_password()
 225         user.renew_token()
 226         user.provider = get_query(self.request).get('provider')
 227         if commit:
 228             user.save()
 229             logger._log(LOGGING_LEVEL, 'Created user %s' % user.email, [])
 230         return user
 231
 232 class InvitedThirdPartyUserCreationForm(ThirdPartyUserCreationForm):
 233     """
 234     Extends the ThirdPartyUserCreationForm: email is readonly.
 235     """
 236     def __init__(self, *args, **kwargs):
 237         """
 238         Changes the order of fields, and removes the username field.
 239         """
 240         super(InvitedThirdPartyUserCreationForm, self).__init__(*args, **kwargs)
 241
 242         #set readonly form fields
 243         ro = ('email',)
 244         for f in ro:
 245             self.fields[f].widget.attrs['readonly'] = True
 246
 247     def save(self, commit=True):
 248         user = super(InvitedThirdPartyUserCreationForm, self).save(commit=False)
 249         level = user.invitation.inviter.level + 1
 250         user.level = level
 251         user.invitations = INVITATIONS_PER_LEVEL.get(level, 0)
 252         user.email_verified = True
 253         if commit:
 254             user.save()
 255         return user
 256
 257 class ShibbolethUserCreationForm(ThirdPartyUserCreationForm):
 258     def clean_email(self):
 259         email = self.cleaned_data['email']
 260         for user in AstakosUser.objects.filter(email = email):
 261             if user.provider == 'shibboleth':
 262                 raise forms.ValidationError(_("This email is already associated with another shibboleth account."))
 263             elif not user.is_active:
 264                 raise forms.ValidationError(_("This email is already associated with an inactive account. \
 265                                               You need to wait to be activated before being able to switch to a shibboleth account."))
 266         super(ShibbolethUserCreationForm, self).clean_email()
 267         return email
 268
 269 class InvitedShibbolethUserCreationForm(ShibbolethUserCreationForm, InvitedThirdPartyUserCreationForm):
 270     pass
 271
 272 class LoginForm(AuthenticationForm):
 273     username = forms.EmailField(label=_("Email"))
 274     recaptcha_challenge_field = forms.CharField(widget=DummyWidget)
 275     recaptcha_response_field = forms.CharField(widget=RecaptchaWidget, label='')
 276
 277     def __init__(self, *args, **kwargs):
 278         was_limited = kwargs.get('was_limited', False)
 279         request = kwargs.get('request', None)
 280         if request:
 281             self.ip = request.META.get('REMOTE_ADDR',
 282                                        request.META.get('HTTP_X_REAL_IP', None))
 283
 284         t = ('request', 'was_limited')
 285         for elem in t:
 286             if elem in kwargs.keys():
 287                 kwargs.pop(elem)
 288         super(LoginForm, self).__init__(*args, **kwargs)
 289
 290         self.fields.keyOrder = ['username', 'password']
 291         if was_limited and RECAPTCHA_ENABLED:
 292             self.fields.keyOrder.extend(['recaptcha_challenge_field',
 293                                          'recaptcha_response_field',])
 294
 295     def clean_recaptcha_response_field(self):
 296         if 'recaptcha_challenge_field' in self.cleaned_data:
 297             self.validate_captcha()
 298         return self.cleaned_data['recaptcha_response_field']
 299
 300     def clean_recaptcha_challenge_field(self):
 301         if 'recaptcha_response_field' in self.cleaned_data:
 302             self.validate_captcha()
 303         return self.cleaned_data['recaptcha_challenge_field']
 304
 305     def validate_captcha(self):
 306         rcf = self.cleaned_data['recaptcha_challenge_field']
 307         rrf = self.cleaned_data['recaptcha_response_field']
 308         check = captcha.submit(rcf, rrf, RECAPTCHA_PRIVATE_KEY, self.ip)
 309         if not check.is_valid:
 310             raise forms.ValidationError(_('You have not entered the correct words'))
 311
 312 class ProfileForm(forms.ModelForm):
 313     """
 314     Subclass of ``ModelForm`` for permiting user to edit his/her profile.
 315     Most of the fields are readonly since the user is not allowed to change them.
 316
 317     The class defines a save method which sets ``is_verified`` to True so as the user
 318     during the next login will not to be redirected to profile page.
 319     """
 320     renew = forms.BooleanField(label='Renew token', required=False)
 321
 322     class Meta:
 323         model = AstakosUser
 324         fields = ('email', 'first_name', 'last_name', 'auth_token', 'auth_token_expires')
 325
 326     def __init__(self, *args, **kwargs):
 327         super(ProfileForm, self).__init__(*args, **kwargs)
 328         instance = getattr(self, 'instance', None)
 329         ro_fields = ('email', 'auth_token', 'auth_token_expires')
 330         if instance and instance.id:
 331             for field in ro_fields:
 332                 self.fields[field].widget.attrs['readonly'] = True
 333
 334     def save(self, commit=True):
 335         user = super(ProfileForm, self).save(commit=False)
 336         user.is_verified = True
 337         if self.cleaned_data.get('renew'):
 338             user.renew_token()
 339         if commit:
 340             user.save()
 341         return user
 342
 343 class FeedbackForm(forms.Form):
 344     """
 345     Form for writing feedback.
 346     """
 347     feedback_msg = forms.CharField(widget=forms.Textarea, label=u'Message')
 348     feedback_data = forms.CharField(widget=forms.HiddenInput(), label='',
 349                                     required=False)
 350
 351 class SendInvitationForm(forms.Form):
 352     """
 353     Form for sending an invitations
 354     """
 355
 356     email = forms.EmailField(required = True, label = 'Email address')
 357     first_name = forms.EmailField(label = 'First name')
 358     last_name = forms.EmailField(label = 'Last name')
 359
 360 class ExtendedPasswordResetForm(PasswordResetForm):
 361     """
 362     Extends PasswordResetForm by overriding save method:
 363     passes a custom from_email in send_mail.
 364
 365     Since Django 1.3 this is useless since ``django.contrib.auth.views.reset_password``
 366     accepts a from_email argument.
 367     """
 368     def clean_email(self):
 369         email = super(ExtendedPasswordResetForm, self).clean_email()
 370         try:
 371             user = AstakosUser.objects.get(email=email, is_active=True)
 372             if not user.has_usable_password():
 373                 raise forms.ValidationError(_("This account has not a usable password."))
 374         except AstakosUser.DoesNotExist, e:
 375             raise forms.ValidationError(_('That e-mail address doesn\'t have an associated user account. Are you sure you\'ve registered?'))
 376         return email
 377
 378     def save(self, domain_override=None, email_template_name='registration/password_reset_email.html',
 379              use_https=False, token_generator=default_token_generator, request=None):
 380         """
 381         Generates a one-use only link for resetting password and sends to the user.
 382         """
 383         for user in self.users_cache:
 384             url = reverse('django.contrib.auth.views.password_reset_confirm',
 385                           kwargs={'uidb36':int_to_base36(user.id),
 386                                   'token':token_generator.make_token(user)})
 387             url = urljoin(BASEURL, url)
 388             t = loader.get_template(email_template_name)
 389             c = {
 390                 'email': user.email,
 391                 'url': url,
 392                 'site_name': SITENAME,
 393                 'user': user,
 394                 'baseurl': BASEURL,
 395                 'support': DEFAULT_CONTACT_EMAIL
 396             }
 397             from_email = DEFAULT_FROM_EMAIL
 398             send_mail(_("Password reset on %s alpha2 testing") % SITENAME,
 399                 t.render(Context(c)), from_email, [user.email])
 400
 401 class EmailChangeForm(forms.ModelForm):
 402     class Meta:
 403         model = EmailChange
 404         fields = ('new_email_address',)
 405
 406     def clean_new_email_address(self):
 407         addr = self.cleaned_data['new_email_address']
 408         if AstakosUser.objects.filter(email__iexact=addr):
 409             raise forms.ValidationError(_(u'This email address is already in use. Please supply a different email address.'))
 410         return addr
 411
 412     def save(self, email_template_name, request, commit=True):
 413         ec = super(EmailChangeForm, self).save(commit=False)
 414         ec.user = request.user
 415         activation_key = hashlib.sha1(str(random()) + smart_str(ec.new_email_address))
 416         ec.activation_key=activation_key.hexdigest()
 417         if commit:
 418             ec.save()
 419         send_change_email(ec, request, email_template_name=email_template_name)
 420
 421 class SignApprovalTermsForm(forms.ModelForm):
 422     class Meta:
 423         model = AstakosUser
 424         fields = ("has_signed_terms",)
 425
 426     def __init__(self, *args, **kwargs):
 427         super(SignApprovalTermsForm, self).__init__(*args, **kwargs)
 428
 429     def clean_has_signed_terms(self):
 430         has_signed_terms = self.cleaned_data['has_signed_terms']
 431         if not has_signed_terms:
 432             raise forms.ValidationError(_('You have to agree with the terms'))
 433         return has_signed_terms
 434
 435 class InvitationForm(forms.ModelForm):
 436     username = forms.EmailField(label=_("Email"))
 437
 438     def __init__(self, *args, **kwargs):
 439         super(InvitationForm, self).__init__(*args, **kwargs)
 440
 441     class Meta:
 442         model = Invitation
 443         fields = ('username', 'realname')
 444
 445     def clean_username(self):
 446         username = self.cleaned_data['username']
 447         try:
 448             Invitation.objects.get(username = username)
 449             raise forms.ValidationError(_('There is already invitation for this email.'))
 450         except Invitation.DoesNotExist:
 451             pass
 452         return username