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 import six
  18
  19 from datetime import datetime
  20
  21 from itsdangerous import BadSignature
  22 from pyld import jsonld
  23 from werkzeug.exceptions import Forbidden
  24 from werkzeug.utils import secure_filename
  25 from jsonschema import ValidationError, Draft4Validator
  26
  27 from mediagoblin import messages
  28 from mediagoblin import mg_globals
  29
  30 from mediagoblin.auth import (check_password,
  31                               tools as auth_tools)
  32 from mediagoblin.edit import forms
  33 from mediagoblin.edit.lib import may_edit_media
  34 from mediagoblin.decorators import (require_active_login, active_user_from_url,
  35                             get_media_entry_by_id, user_may_alter_collection,
  36                             get_user_collection, user_has_privilege,
  37                             user_not_banned, path_subtitle)
  38 from mediagoblin.tools.crypto import get_timed_signer_url
  39 from mediagoblin.tools.metadata import (compact_and_validate, DEFAULT_CHECKER,
  40                                         DEFAULT_SCHEMA)
  41 from mediagoblin.tools.mail import email_debug_message
  42 from mediagoblin.tools.response import (render_to_response,
  43                                         redirect, redirect_obj, render_404)
  44 from mediagoblin.tools.translate import pass_to_ugettext as _
  45 from mediagoblin.tools.template import render_template
  46 from mediagoblin.tools.text import (
  47     convert_to_tag_list_of_dicts, media_tags_as_string)
  48 from mediagoblin.tools.url import slugify
  49 from mediagoblin.db.util import check_media_slug_used, check_collection_slug_used
  50 from mediagoblin.db.models import User, LocalUser, Client, AccessToken, Location
  51
  52 import mimetypes
  53
  54
  55 @get_media_entry_by_id
  56 @require_active_login
  57 def edit_media(request, media):
  58     if not may_edit_media(request, media):
  59         raise Forbidden("User may not edit this media")
  60
  61     defaults = dict(
  62         title=media.title,
  63         slug=media.slug,
  64         description=media.description,
  65         tags=media_tags_as_string(media.tags),
  66         license=media.license)
  67
  68     form = forms.EditForm(
  69         request.form,
  70         **defaults)
  71
  72     if request.method == 'POST' and form.validate():
  73         # Make sure there isn't already a MediaEntry with such a slug
  74         # and userid.
  75         slug = slugify(form.slug.data)
  76         slug_used = check_media_slug_used(media.actor, slug, media.id)
  77
  78         if slug_used:
  79             form.slug.errors.append(
  80                 _(u'An entry with that slug already exists for this user.'))
  81         else:
  82             media.title = form.title.data
  83             media.description = form.description.data
  84             media.tags = convert_to_tag_list_of_dicts(
  85                                    form.tags.data)
  86
  87             media.license = six.text_type(form.license.data) or None
  88             media.slug = slug
  89             media.save()
  90
  91             return redirect_obj(request, media)
  92
  93     if request.user.has_privilege(u'admin') \
  94             and media.actor != request.user.id \
  95             and request.method != 'POST':
  96         messages.add_message(
  97             request,
  98             messages.WARNING,
  99             _("You are editing another user's media. Proceed with caution."))
 100
 101     return render_to_response(
 102         request,
 103         'mediagoblin/edit/edit.html',
 104         {'media': media,
 105          'form': form})
 106
 107
 108 # Mimetypes that browsers parse scripts in.
 109 # Content-sniffing isn't taken into consideration.
 110 UNSAFE_MIMETYPES = [
 111         'text/html',
 112         'text/svg+xml']
 113
 114
 115 @get_media_entry_by_id
 116 @require_active_login
 117 def edit_attachments(request, media):
 118     if mg_globals.app_config['allow_attachments']:
 119         form = forms.EditAttachmentsForm()
 120
 121         # Add any attachements
 122         if 'attachment_file' in request.files \
 123             and request.files['attachment_file']:
 124
 125             # Security measure to prevent attachments from being served as
 126             # text/html, which will be parsed by web clients and pose an XSS
 127             # threat.
 128             #
 129             # TODO
 130             # This method isn't flawless as some browsers may perform
 131             # content-sniffing.
 132             # This method isn't flawless as we do the mimetype lookup on the
 133             # machine parsing the upload form, and not necessarily the machine
 134             # serving the attachments.
 135             if mimetypes.guess_type(
 136                     request.files['attachment_file'].filename)[0] in \
 137                     UNSAFE_MIMETYPES:
 138                 public_filename = secure_filename('{0}.notsafe'.format(
 139                     request.files['attachment_file'].filename))
 140             else:
 141                 public_filename = secure_filename(
 142                         request.files['attachment_file'].filename)
 143
 144             attachment_public_filepath \
 145                 = mg_globals.public_store.get_unique_filepath(
 146                 ['media_entries', six.text_type(media.id), 'attachment',
 147                  public_filename])
 148
 149             attachment_public_file = mg_globals.public_store.get_file(
 150                 attachment_public_filepath, 'wb')
 151
 152             try:
 153                 attachment_public_file.write(
 154                     request.files['attachment_file'].stream.read())
 155             finally:
 156                 request.files['attachment_file'].stream.close()
 157
 158             media.attachment_files.append(dict(
 159                     name=form.attachment_name.data \
 160                         or request.files['attachment_file'].filename,
 161                     filepath=attachment_public_filepath,
 162                     created=datetime.utcnow(),
 163                     ))
 164
 165             media.save()
 166
 167             messages.add_message(
 168                 request,
 169                 messages.SUCCESS,
 170                 _("You added the attachment %s!") %
 171                     (form.attachment_name.data or
 172                      request.files['attachment_file'].filename))
 173
 174             return redirect(request,
 175                             location=media.url_for_self(request.urlgen))
 176         return render_to_response(
 177             request,
 178             'mediagoblin/edit/attachments.html',
 179             {'media': media,
 180              'form': form})
 181     else:
 182         raise Forbidden("Attachments are disabled")
 183
 184 @get_media_entry_by_id
 185 @require_active_login
 186 def edit_subtitles(request, media):
 187     if mg_globals.app_config['allow_subtitles']:
 188         form = forms.EditSubtitlesForm(request.form)
 189
 190         # Add any subtitles
 191         if 'subtitle_file' in request.files \
 192             and request.files['subtitle_file']:
 193             if mimetypes.guess_type(
 194                     request.files['subtitle_file'].filename)[0] in \
 195                     UNSAFE_MIMETYPES:
 196                 public_filename = secure_filename('{0}.notsafe'.format(
 197                     request.files['subtitle_file'].filename))
 198             else:
 199                 public_filename = secure_filename(
 200                         request.files['subtitle_file'].filename)
 201
 202             subtitle_public_filepath \
 203                 = mg_globals.public_store.get_unique_filepath(
 204                 ['media_entries', six.text_type(media.id), 'subtitle',
 205                  public_filename])
 206
 207             subtitle_public_file = mg_globals.public_store.get_file(
 208                 subtitle_public_filepath, 'wb')
 209
 210             try:
 211                 subtitle_public_file.write(
 212                     request.files['subtitle_file'].stream.read())
 213             finally:
 214                 request.files['subtitle_file'].stream.close()
 215
 216             media.subtitle_files.append(dict(
 217                     name=form.subtitle_language.data \
 218                         or request.files['subtitle_file'].filename,
 219                     filepath=subtitle_public_filepath,
 220                     created=datetime.utcnow(),
 221                     ))
 222
 223             media.save()
 224
 225             messages.add_message(
 226                 request,
 227                 messages.SUCCESS,
 228                 _("You added the subttile %s!") %
 229                     (form.subtitle_language.data or
 230                      request.files['subtitle_file'].filename))
 231
 232             return redirect(request,
 233                             location=media.url_for_self(request.urlgen))
 234         return render_to_response(
 235             request,
 236             'mediagoblin/edit/subtitles.html',
 237             {'media': media,
 238              'form': form})
 239     else:
 240         raise Forbidden("Subtitles are disabled")
 241
 242 @require_active_login
 243 def legacy_edit_profile(request):
 244     """redirect the old /edit/profile/?username=USER to /u/USER/edit/"""
 245     username = request.GET.get('username') or request.user.username
 246     return redirect(request, 'mediagoblin.edit.profile', user=username)
 247
 248
 249 @require_active_login
 250 @active_user_from_url
 251 def edit_profile(request, url_user=None):
 252     # admins may edit any user profile
 253     if request.user.username != url_user.username:
 254         if not request.user.has_privilege(u'admin'):
 255             raise Forbidden(_("You can only edit your own profile."))
 256
 257         # No need to warn again if admin just submitted an edited profile
 258         if request.method != 'POST':
 259             messages.add_message(
 260                 request,
 261                 messages.WARNING,
 262                 _("You are editing a user's profile. Proceed with caution."))
 263
 264     user = url_user
 265
 266     # Get the location name
 267     if user.location is None:
 268         location = ""
 269     else:
 270         location = user.get_location.name
 271
 272     form = forms.EditProfileForm(request.form,
 273         url=user.url,
 274         bio=user.bio,
 275         location=location)
 276
 277     if request.method == 'POST' and form.validate():
 278         user.url = six.text_type(form.url.data)
 279         user.bio = six.text_type(form.bio.data)
 280
 281         # Save location
 282         if form.location.data and user.location is None:
 283             user.get_location = Location(name=six.text_type(form.location.data))
 284         elif form.location.data:
 285             location = user.get_location
 286             location.name = six.text_type(form.location.data)
 287             location.save()
 288
 289         user.save()
 290
 291         messages.add_message(
 292             request,
 293             messages.SUCCESS,
 294             _("Profile changes saved"))
 295         return redirect(request,
 296                        'mediagoblin.user_pages.user_home',
 297                         user=user.username)
 298
 299     return render_to_response(
 300         request,
 301         'mediagoblin/edit/edit_profile.html',
 302         {'user': user,
 303          'form': form})
 304
 305 EMAIL_VERIFICATION_TEMPLATE = (
 306     u'{uri}?'
 307     u'token={verification_key}')
 308
 309
 310 @require_active_login
 311 def edit_account(request):
 312     user = request.user
 313     form = forms.EditAccountForm(request.form,
 314         wants_comment_notification=user.wants_comment_notification,
 315         license_preference=user.license_preference,
 316         wants_notifications=user.wants_notifications)
 317
 318     if request.method == 'POST' and form.validate():
 319         user.wants_comment_notification = form.wants_comment_notification.data
 320         user.wants_notifications = form.wants_notifications.data
 321
 322         user.license_preference = form.license_preference.data
 323
 324         user.save()
 325         messages.add_message(
 326             request,
 327             messages.SUCCESS,
 328             _("Account settings saved"))
 329         return redirect(request,
 330                         'mediagoblin.user_pages.user_home',
 331                         user=user.username)
 332
 333     return render_to_response(
 334         request,
 335         'mediagoblin/edit/edit_account.html',
 336         {'user': user,
 337          'form': form})
 338
 339 @require_active_login
 340 def deauthorize_applications(request):
 341     """ Deauthroize OAuth applications """
 342     if request.method == 'POST' and "application" in request.form:
 343         token = request.form["application"]
 344         access_token = AccessToken.query.filter_by(token=token).first()
 345         if access_token is None:
 346             messages.add_message(
 347                 request,
 348                 messages.ERROR,
 349                 _("Unknown application, not able to deauthorize")
 350             )
 351         else:
 352             access_token.delete()
 353             messages.add_message(
 354                 request,
 355                 messages.SUCCESS,
 356                 _("Application has been deauthorized")
 357             )
 358
 359     access_tokens = AccessToken.query.filter_by(actor=request.user.id)
 360     applications = [(a.get_requesttoken, a) for a in access_tokens]
 361
 362     return render_to_response(
 363         request,
 364         'mediagoblin/edit/deauthorize_applications.html',
 365         {'applications': applications}
 366     )
 367
 368 @require_active_login
 369 def delete_account(request):
 370     """Delete a user completely"""
 371     user = request.user
 372     if request.method == 'POST':
 373         if request.form.get(u'confirmed'):
 374             # Form submitted and confirmed. Actually delete the user account
 375             # Log out user and delete cookies etc.
 376             # TODO: Should we be using MG.auth.views.py:logout for this?
 377             request.session.delete()
 378
 379             # Delete user account and all related media files etc....
 380             user = User.query.filter(User.id==user.id).first()
 381             user.delete()
 382
 383             # We should send a message that the user has been deleted
 384             # successfully. But we just deleted the session, so we
 385             # can't...
 386             return redirect(request, 'index')
 387
 388         else: # Did not check the confirmation box...
 389             messages.add_message(
 390                 request,
 391                 messages.WARNING,
 392                 _('You need to confirm the deletion of your account.'))
 393
 394     # No POST submission or not confirmed, just show page
 395     return render_to_response(
 396         request,
 397         'mediagoblin/edit/delete_account.html',
 398         {'user': user})
 399
 400
 401 @require_active_login
 402 @user_may_alter_collection
 403 @get_user_collection
 404 def edit_collection(request, collection):
 405     defaults = dict(
 406         title=collection.title,
 407         slug=collection.slug,
 408         description=collection.description)
 409
 410     form = forms.EditCollectionForm(
 411         request.form,
 412         **defaults)
 413
 414     if request.method == 'POST' and form.validate():
 415         # Make sure there isn't already a Collection with such a slug
 416         # and userid.
 417         slug_used = check_collection_slug_used(collection.actor,
 418                 form.slug.data, collection.id)
 419
 420         # Make sure there isn't already a Collection with this title
 421         existing_collection = request.db.Collection.query.filter_by(
 422                 actor=request.user.id,
 423                 title=form.title.data).first()
 424
 425         if existing_collection and existing_collection.id != collection.id:
 426             messages.add_message(
 427                 request,
 428                 messages.ERROR,
 429                 _('You already have a collection called "%s"!') %
 430                     form.title.data)
 431         elif slug_used:
 432             form.slug.errors.append(
 433                 _(u'A collection with that slug already exists for this user.'))
 434         else:
 435             collection.title = six.text_type(form.title.data)
 436             collection.description = six.text_type(form.description.data)
 437             collection.slug = six.text_type(form.slug.data)
 438
 439             collection.save()
 440
 441             return redirect_obj(request, collection)
 442
 443     if request.user.has_privilege(u'admin') \
 444             and collection.actor != request.user.id \
 445             and request.method != 'POST':
 446         messages.add_message(
 447             request,
 448             messages.WARNING,
 449             _("You are editing another user's collection. "
 450               "Proceed with caution."))
 451
 452     return render_to_response(
 453         request,
 454         'mediagoblin/edit/edit_collection.html',
 455         {'collection': collection,
 456          'form': form})
 457
 458
 459 def verify_email(request):
 460     """
 461     Email verification view for changing email address
 462     """
 463     # If no token, we can't do anything
 464     if not 'token' in request.GET:
 465         return render_404(request)
 466
 467     # Catch error if token is faked or expired
 468     token = None
 469     try:
 470         token = get_timed_signer_url("mail_verification_token") \
 471                 .loads(request.GET['token'], max_age=10*24*3600)
 472     except BadSignature:
 473         messages.add_message(
 474             request,
 475             messages.ERROR,
 476             _('The verification key or user id is incorrect.'))
 477
 478         return redirect(
 479             request,
 480             'index')
 481
 482     user = User.query.filter_by(id=int(token['user'])).first()
 483
 484     if user:
 485         user.email = token['email']
 486         user.save()
 487
 488         messages.add_message(
 489             request,
 490             messages.SUCCESS,
 491             _('Your email address has been verified.'))
 492
 493     else:
 494             messages.add_message(
 495                 request,
 496                 messages.ERROR,
 497                 _('The verification key or user id is incorrect.'))
 498
 499     return redirect(
 500         request, 'mediagoblin.user_pages.user_home',
 501         user=user.username)
 502
 503
 504 def change_email(request):
 505     """ View to change the user's email """
 506     form = forms.ChangeEmailForm(request.form)
 507     user = request.user
 508
 509     # If no password authentication, no need to enter a password
 510     if 'pass_auth' not in request.template_env.globals or not user.pw_hash:
 511         form.__delitem__('password')
 512
 513     if request.method == 'POST' and form.validate():
 514         new_email = form.new_email.data
 515         users_with_email = User.query.filter(
 516             LocalUser.email==new_email
 517         ).count()
 518
 519         if users_with_email:
 520             form.new_email.errors.append(
 521                 _('Sorry, a user with that email address'
 522                     ' already exists.'))
 523
 524         if form.password and user.pw_hash and not check_password(
 525                 form.password.data, user.pw_hash):
 526             form.password.errors.append(
 527                 _('Wrong password'))
 528
 529         if not form.errors:
 530             verification_key = get_timed_signer_url(
 531                 'mail_verification_token').dumps({
 532                     'user': user.id,
 533                     'email': new_email})
 534
 535             rendered_email = render_template(
 536                 request, 'mediagoblin/edit/verification.txt',
 537                 {'username': user.username,
 538                     'verification_url': EMAIL_VERIFICATION_TEMPLATE.format(
 539                     uri=request.urlgen('mediagoblin.edit.verify_email',
 540                                     qualified=True),
 541                     verification_key=verification_key)})
 542
 543             email_debug_message(request)
 544             auth_tools.send_verification_email(user, request, new_email,
 545                                             rendered_email)
 546
 547             return redirect(request, 'mediagoblin.edit.account')
 548
 549     return render_to_response(
 550         request,
 551         'mediagoblin/edit/change_email.html',
 552         {'form': form,
 553          'user': user})
 554
 555 @user_has_privilege(u'admin')
 556 @require_active_login
 557 @get_media_entry_by_id
 558 def edit_metadata(request, media):
 559     form = forms.EditMetaDataForm(request.form)
 560     if request.method == "POST" and form.validate():
 561         metadata_dict = dict([(row['identifier'],row['value'])
 562                             for row in form.media_metadata.data])
 563         json_ld_metadata = None
 564         json_ld_metadata = compact_and_validate(metadata_dict)
 565         media.media_metadata = json_ld_metadata
 566         media.save()
 567         return redirect_obj(request, media)
 568
 569     if len(form.media_metadata) == 0:
 570         for identifier, value in six.iteritems(media.media_metadata):
 571             if identifier == "@context": continue
 572             form.media_metadata.append_entry({
 573                 'identifier':identifier,
 574                 'value':value})
 575
 576     return render_to_response(
 577         request,
 578         'mediagoblin/edit/metadata.html',
 579         {'form':form,
 580          'media':media})
 581
 582
 583 @require_active_login
 584 @path_subtitle
 585 def custom_subtitles(request,path=None):
 586     form = forms.CustomizeSubtitlesForm(request.form)
 587     return render_to_response(
 588         request,
 589         "mediagoblin/edit/custom_subtitles.html",
 590         {"path": path,
 591          "form": form })