def _process(self, source):
self.user.picture_source = source
if source == ProfilePictureSource.standard:
self.user.picture = None
self.user.picture_metadata = None
logger.info('Profile picture of user %s removed by %s', self.user, session.user)
return '', 204
if source == ProfilePictureSource.custom:
f = request.files['picture']
try:
pic = Image.open(f)
except OSError:
raise UserValueError(_('You cannot upload this file as profile picture.'))
if pic.format.lower() not in {'jpeg', 'png', 'gif', 'webp'}:
raise UserValueError(_('The file has an invalid format ({format}).').format(format=pic.format))
if pic.mode not in ('RGB', 'RGBA'):
pic = pic.convert('RGB')
pic = square(pic)
if pic.height > 256:
pic = pic.resize((256, 256), resample=Image.BICUBIC)
image_bytes = BytesIO()
pic.save(image_bytes, 'PNG')
image_bytes.seek(0)
set_user_avatar(self.user, image_bytes.read(), f.filename)
else:
content, lastmod = get_gravatar_for_user(self.user, source == ProfilePictureSource.identicon, 256)
set_user_avatar(self.user, content, source.name, lastmod)
logger.info('Profile picture of user %s updated by %s', self.user, session.user)
return '', 204
def update_gravatars(user=None):
if user is not None:
# explicitly scheduled update (after an email change)
if user.picture_source not in (ProfilePictureSource.gravatar, ProfilePictureSource.identicon):
return
users = [user]
else:
users = User.query.filter(~User.is_deleted, User.picture_source == ProfilePictureSource.gravatar).all()
for user in committing_iterator(users):
gravatar, lastmod = get_gravatar_for_user(user, identicon=False, lastmod=user.picture_metadata['lastmod'])
if gravatar is None:
logger.debug('Gravatar for %r did not change (not modified)', user)
continue
if crc32(gravatar) == user.picture_metadata['hash']:
logger.debug('Gravatar for %r did not change (same hash)', user)
user.picture_metadata['lastmod'] = lastmod
flag_modified(user, 'picture_metadata')
continue
set_user_avatar(user, gravatar, 'gravatar', lastmod)
logger.info('Gravatar of user %s updated', user)