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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from functools import wraps
from webob import exc
from mediagoblin.db.util import ObjectId, InvalidId
from mediagoblin.tools.response import redirect, render_404
def require_active_login(controller):
"""
Require an active login from the user.
"""
@wraps(controller)
def new_controller_func(request, *args, **kwargs):
if request.user and \
request.user.get('status') == u'needs_email_verification':
return redirect(
request, 'mediagoblin.user_pages.user_home',
user=request.user.username)
elif not request.user or request.user.get('status') != u'active':
return exc.HTTPFound(
location="%s?next=%s" % (
request.urlgen("mediagoblin.auth.login"),
request.full_path))
return controller(request, *args, **kwargs)
return new_controller_func
def user_may_delete_media(controller):
"""
Require user ownership of the MediaEntry to delete.
"""
@wraps(controller)
def wrapper(request, *args, **kwargs):
uploader_id = request.db.MediaEntry.find_one(
{'_id': ObjectId(request.matchdict['media'])}).uploader
if not (request.user.is_admin or
request.user._id == uploader_id):
return exc.HTTPForbidden()
return controller(request, *args, **kwargs)
return wrapper
def uses_pagination(controller):
"""
Check request GET 'page' key for wrong values
"""
@wraps(controller)
def wrapper(request, *args, **kwargs):
try:
page = int(request.GET.get('page', 1))
if page < 0:
return render_404(request)
except ValueError:
return render_404(request)
return controller(request, page=page, *args, **kwargs)
return wrapper
def get_user_media_entry(controller):
"""
Pass in a MediaEntry based off of a url component
"""
@wraps(controller)
def wrapper(request, *args, **kwargs):
user = request.db.User.find_one(
{'username': request.matchdict['user']})
if not user:
return render_404(request)
media = request.db.MediaEntry.find_one(
{'slug': request.matchdict['media'],
'state': u'processed',
'uploader': user._id})
# no media via slug? Grab it via ObjectId
if not media:
try:
media = request.db.MediaEntry.find_one(
{'_id': ObjectId(request.matchdict['media']),
'state': u'processed',
'uploader': user._id})
except InvalidId:
return render_404(request)
# Still no media? Okay, 404.
if not media:
return render_404(request)
return controller(request, media=media, *args, **kwargs)
return wrapper
def get_media_entry_by_id(controller):
"""
Pass in a MediaEntry based off of a url component
"""
@wraps(controller)
def wrapper(request, *args, **kwargs):
try:
media = request.db.MediaEntry.find_one(
{'_id': ObjectId(request.matchdict['media']),
'state': u'processed'})
except InvalidId:
return render_404(request)
# Still no media? Okay, 404.
if not media:
return render_404(request)
return controller(request, media=media, *args, **kwargs)
return wrapper
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