mediagoblin/edit/views.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU Affero General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU Affero General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 from datetime import datetime
  18
  19 from itsdangerous import BadSignature
  20 from werkzeug.exceptions import Forbidden
  21 from werkzeug.utils import secure_filename
  22
  23 from mediagoblin import messages
  24 from mediagoblin import mg_globals
  25
  26 from mediagoblin import auth
  27 from mediagoblin.auth import tools as auth_tools
  28 from mediagoblin.edit import forms
  29 from mediagoblin.edit.lib import may_edit_media
  30 from mediagoblin.decorators import (require_active_login, active_user_from_url,
  31                             get_media_entry_by_id, user_may_alter_collection,
  32                             get_user_collection)
  33 from mediagoblin.tools.crypto import get_timed_signer_url
  34 from mediagoblin.tools.mail import email_debug_message
  35 from mediagoblin.tools.response import (render_to_response,
  36                                         redirect, redirect_obj, render_404)
  37 from mediagoblin.tools.translate import pass_to_ugettext as _
  38 from mediagoblin.tools.template import render_template
  39 from mediagoblin.tools.text import (
  40     convert_to_tag_list_of_dicts, media_tags_as_string)
  41 from mediagoblin.tools.url import slugify
  42 from mediagoblin.db.util import check_media_slug_used, check_collection_slug_used
  43 from mediagoblin.db.models import User
  44
  45 import mimetypes
  46
  47
  48 @get_media_entry_by_id
  49 @require_active_login
  50 def edit_media(request, media):
  51     if not may_edit_media(request, media):
  52         raise Forbidden("User may not edit this media")
  53
  54     defaults = dict(
  55         title=media.title,
  56         slug=media.slug,
  57         description=media.description,
  58         tags=media_tags_as_string(media.tags),
  59         license=media.license)
  60
  61     form = forms.EditForm(
  62         request.form,
  63         **defaults)
  64
  65     if request.method == 'POST' and form.validate():
  66         # Make sure there isn't already a MediaEntry with such a slug
  67         # and userid.
  68         slug = slugify(form.slug.data)
  69         slug_used = check_media_slug_used(media.uploader, slug, media.id)
  70
  71         if slug_used:
  72             form.slug.errors.append(
  73                 _(u'An entry with that slug already exists for this user.'))
  74         else:
  75             media.title = form.title.data
  76             media.description = form.description.data
  77             media.tags = convert_to_tag_list_of_dicts(
  78                                    form.tags.data)
  79
  80             media.license = unicode(form.license.data) or None
  81             media.slug = slug
  82             media.save()
  83
  84             return redirect_obj(request, media)
  85
  86     if request.user.is_admin \
  87             and media.uploader != request.user.id \
  88             and request.method != 'POST':
  89         messages.add_message(
  90             request, messages.WARNING,
  91             _("You are editing another user's media. Proceed with caution."))
  92
  93     return render_to_response(
  94         request,
  95         'mediagoblin/edit/edit.html',
  96         {'media': media,
  97          'form': form})
  98
  99
 100 # Mimetypes that browsers parse scripts in.
 101 # Content-sniffing isn't taken into consideration.
 102 UNSAFE_MIMETYPES = [
 103         'text/html',
 104         'text/svg+xml']
 105
 106
 107 @get_media_entry_by_id
 108 @require_active_login
 109 def edit_attachments(request, media):
 110     if mg_globals.app_config['allow_attachments']:
 111         form = forms.EditAttachmentsForm()
 112
 113         # Add any attachements
 114         if 'attachment_file' in request.files \
 115             and request.files['attachment_file']:
 116
 117             # Security measure to prevent attachments from being served as
 118             # text/html, which will be parsed by web clients and pose an XSS
 119             # threat.
 120             #
 121             # TODO
 122             # This method isn't flawless as some browsers may perform
 123             # content-sniffing.
 124             # This method isn't flawless as we do the mimetype lookup on the
 125             # machine parsing the upload form, and not necessarily the machine
 126             # serving the attachments.
 127             if mimetypes.guess_type(
 128                     request.files['attachment_file'].filename)[0] in \
 129                     UNSAFE_MIMETYPES:
 130                 public_filename = secure_filename('{0}.notsafe'.format(
 131                     request.files['attachment_file'].filename))
 132             else:
 133                 public_filename = secure_filename(
 134                         request.files['attachment_file'].filename)
 135
 136             attachment_public_filepath \
 137                 = mg_globals.public_store.get_unique_filepath(
 138                 ['media_entries', unicode(media.id), 'attachment',
 139                  public_filename])
 140
 141             attachment_public_file = mg_globals.public_store.get_file(
 142                 attachment_public_filepath, 'wb')
 143
 144             try:
 145                 attachment_public_file.write(
 146                     request.files['attachment_file'].stream.read())
 147             finally:
 148                 request.files['attachment_file'].stream.close()
 149
 150             media.attachment_files.append(dict(
 151                     name=form.attachment_name.data \
 152                         or request.files['attachment_file'].filename,
 153                     filepath=attachment_public_filepath,
 154                     created=datetime.utcnow(),
 155                     ))
 156
 157             media.save()
 158
 159             messages.add_message(
 160                 request, messages.SUCCESS,
 161                 _("You added the attachment %s!") \
 162                     % (form.attachment_name.data
 163                        or request.files['attachment_file'].filename))
 164
 165             return redirect(request,
 166                             location=media.url_for_self(request.urlgen))
 167         return render_to_response(
 168             request,
 169             'mediagoblin/edit/attachments.html',
 170             {'media': media,
 171              'form': form})
 172     else:
 173         raise Forbidden("Attachments are disabled")
 174
 175 @require_active_login
 176 def legacy_edit_profile(request):
 177     """redirect the old /edit/profile/?username=USER to /u/USER/edit/"""
 178     username = request.GET.get('username') or request.user.username
 179     return redirect(request, 'mediagoblin.edit.profile', user=username)
 180
 181
 182 @require_active_login
 183 @active_user_from_url
 184 def edit_profile(request, url_user=None):
 185     # admins may edit any user profile
 186     if request.user.username != url_user.username:
 187         if not request.user.is_admin:
 188             raise Forbidden(_("You can only edit your own profile."))
 189
 190         # No need to warn again if admin just submitted an edited profile
 191         if request.method != 'POST':
 192             messages.add_message(
 193                 request, messages.WARNING,
 194                 _("You are editing a user's profile. Proceed with caution."))
 195
 196     user = url_user
 197
 198     form = forms.EditProfileForm(request.form,
 199         url=user.url,
 200         bio=user.bio)
 201
 202     if request.method == 'POST' and form.validate():
 203         user.url = unicode(form.url.data)
 204         user.bio = unicode(form.bio.data)
 205
 206         user.save()
 207
 208         messages.add_message(request,
 209                              messages.SUCCESS,
 210                              _("Profile changes saved"))
 211         return redirect(request,
 212                        'mediagoblin.user_pages.user_home',
 213                         user=user.username)
 214
 215     return render_to_response(
 216         request,
 217         'mediagoblin/edit/edit_profile.html',
 218         {'user': user,
 219          'form': form})
 220
 221 EMAIL_VERIFICATION_TEMPLATE = (
 222     u'{uri}?'
 223     u'token={verification_key}')
 224
 225
 226 @require_active_login
 227 def edit_account(request):
 228     user = request.user
 229     form = forms.EditAccountForm(request.form,
 230         wants_comment_notification=user.wants_comment_notification,
 231         license_preference=user.license_preference,
 232         wants_notifications=user.wants_notifications)
 233
 234     if request.method == 'POST' and form.validate():
 235         user.wants_comment_notification = form.wants_comment_notification.data
 236         user.wants_notifications = form.wants_notifications.data
 237
 238         user.license_preference = form.license_preference.data
 239
 240         if form.new_email.data:
 241             _update_email(request, form, user)
 242
 243         if not form.errors:
 244             user.save()
 245             messages.add_message(request,
 246                                  messages.SUCCESS,
 247                                  _("Account settings saved"))
 248             return redirect(request,
 249                             'mediagoblin.user_pages.user_home',
 250                             user=user.username)
 251
 252     return render_to_response(
 253         request,
 254         'mediagoblin/edit/edit_account.html',
 255         {'user': user,
 256          'form': form})
 257
 258
 259 @require_active_login
 260 def delete_account(request):
 261     """Delete a user completely"""
 262     user = request.user
 263     if request.method == 'POST':
 264         if request.form.get(u'confirmed'):
 265             # Form submitted and confirmed. Actually delete the user account
 266             # Log out user and delete cookies etc.
 267             # TODO: Should we be using MG.auth.views.py:logout for this?
 268             request.session.delete()
 269
 270             # Delete user account and all related media files etc....
 271             request.user.delete()
 272
 273             # We should send a message that the user has been deleted
 274             # successfully. But we just deleted the session, so we
 275             # can't...
 276             return redirect(request, 'index')
 277
 278         else: # Did not check the confirmation box...
 279             messages.add_message(
 280                 request, messages.WARNING,
 281                 _('You need to confirm the deletion of your account.'))
 282
 283     # No POST submission or not confirmed, just show page
 284     return render_to_response(
 285         request,
 286         'mediagoblin/edit/delete_account.html',
 287         {'user': user})
 288
 289
 290 @require_active_login
 291 @user_may_alter_collection
 292 @get_user_collection
 293 def edit_collection(request, collection):
 294     defaults = dict(
 295         title=collection.title,
 296         slug=collection.slug,
 297         description=collection.description)
 298
 299     form = forms.EditCollectionForm(
 300         request.form,
 301         **defaults)
 302
 303     if request.method == 'POST' and form.validate():
 304         # Make sure there isn't already a Collection with such a slug
 305         # and userid.
 306         slug_used = check_collection_slug_used(collection.creator,
 307                 form.slug.data, collection.id)
 308
 309         # Make sure there isn't already a Collection with this title
 310         existing_collection = request.db.Collection.query.filter_by(
 311                 creator=request.user.id,
 312                 title=form.title.data).first()
 313
 314         if existing_collection and existing_collection.id != collection.id:
 315             messages.add_message(
 316                 request, messages.ERROR,
 317                 _('You already have a collection called "%s"!') % \
 318                     form.title.data)
 319         elif slug_used:
 320             form.slug.errors.append(
 321                 _(u'A collection with that slug already exists for this user.'))
 322         else:
 323             collection.title = unicode(form.title.data)
 324             collection.description = unicode(form.description.data)
 325             collection.slug = unicode(form.slug.data)
 326
 327             collection.save()
 328
 329             return redirect_obj(request, collection)
 330
 331     if request.user.is_admin \
 332             and collection.creator != request.user.id \
 333             and request.method != 'POST':
 334         messages.add_message(
 335             request, messages.WARNING,
 336             _("You are editing another user's collection. Proceed with caution."))
 337
 338     return render_to_response(
 339         request,
 340         'mediagoblin/edit/edit_collection.html',
 341         {'collection': collection,
 342          'form': form})
 343
 344
 345 @require_active_login
 346 def change_pass(request):
 347     # If no password authentication, no need to change your password
 348     if 'pass_auth' not in request.template_env.globals:
 349         return redirect(request, 'index')
 350
 351     form = forms.ChangePassForm(request.form)
 352     user = request.user
 353
 354     if request.method == 'POST' and form.validate():
 355
 356         if not auth.check_password(
 357                 form.old_password.data, user.pw_hash):
 358             form.old_password.errors.append(
 359                 _('Wrong password'))
 360
 361             return render_to_response(
 362                 request,
 363                 'mediagoblin/edit/change_pass.html',
 364                 {'form': form,
 365                  'user': user})
 366
 367         # Password matches
 368         user.pw_hash = auth.gen_password_hash(
 369             form.new_password.data)
 370         user.save()
 371
 372         messages.add_message(
 373             request, messages.SUCCESS,
 374             _('Your password was changed successfully'))
 375
 376         return redirect(request, 'mediagoblin.edit.account')
 377
 378     return render_to_response(
 379         request,
 380         'mediagoblin/edit/change_pass.html',
 381         {'form': form,
 382          'user': user})
 383
 384
 385 def verify_email(request):
 386     """
 387     Email verification view for changing email address
 388     """
 389     # If no token, we can't do anything
 390     if not 'token' in request.GET:
 391         return render_404(request)
 392
 393     # Catch error if token is faked or expired
 394     token = None
 395     try:
 396         token = get_timed_signer_url("mail_verification_token") \
 397                 .loads(request.GET['token'], max_age=10*24*3600)
 398     except BadSignature:
 399         messages.add_message(
 400             request,
 401             messages.ERROR,
 402             _('The verification key or user id is incorrect.'))
 403
 404         return redirect(
 405             request,
 406             'index')
 407
 408     user = User.query.filter_by(id=int(token['user'])).first()
 409
 410     if user:
 411         user.email = token['email']
 412         user.save()
 413
 414         messages.add_message(
 415             request,
 416             messages.SUCCESS,
 417             _('Your email address has been verified.'))
 418
 419     else:
 420             messages.add_message(
 421                 request,
 422                 messages.ERROR,
 423                 _('The verification key or user id is incorrect.'))
 424
 425     return redirect(
 426         request, 'mediagoblin.user_pages.user_home',
 427         user=user.username)
 428
 429
 430 def _update_email(request, form, user):
 431     new_email = form.new_email.data
 432     users_with_email = User.query.filter_by(
 433         email=new_email).count()
 434
 435     if users_with_email:
 436         form.new_email.errors.append(
 437             _('Sorry, a user with that email address'
 438                 ' already exists.'))
 439
 440     elif not users_with_email:
 441         verification_key = get_timed_signer_url(
 442             'mail_verification_token').dumps({
 443                 'user': user.id,
 444                 'email': new_email})
 445
 446         rendered_email = render_template(
 447             request, 'mediagoblin/edit/verification.txt',
 448             {'username': user.username,
 449                 'verification_url': EMAIL_VERIFICATION_TEMPLATE.format(
 450                 uri=request.urlgen('mediagoblin.edit.verify_email',
 451                                    qualified=True),
 452                 verification_key=verification_key)})
 453
 454         email_debug_message(request)
 455         auth_tools.send_verification_email(user, request, new_email,
 456                                            rendered_email)