def get_allowed_collections_for_personal_records(user, readable_collections): allowed = [] for c in Collection.objects.filter(id__in=readable_collections): restrictions = get_effective_permissions_and_restrictions(user, c)[3] if not restrictions or \ restrictions.get('personal', 'yes').lower() != 'no': allowed.append(c.id) return allowed
def get_allowed_collections_for_personal_records(user, readable_collections): allowed = [] for c in Collection.objects.filter(id__in=readable_collections): restrictions = get_effective_permissions_and_restrictions(user, c)[3] if not restrictions or \ restrictions.get('personal', 'yes').lower() != 'no': allowed.append(c.id) return allowed
def get_upload_limit(self, user): if user.is_superuser: return 0 r, w, m, restrictions = get_effective_permissions_and_restrictions(user, self) if restrictions: try: return int(restrictions["uploadlimit"]) except (ValueError, KeyError): pass return settings.UPLOAD_LIMIT
def is_downloadable_by(self, user, original=True): r, w, m, restrictions = get_effective_permissions_and_restrictions( user, self.storage) # if size or download restrictions exist, no direct download of a # media file is allowed if (restrictions and ((original and 'width' in restrictions) or (original and 'height' in restrictions) or restrictions.get('download', 'yes') == 'no')): return False else: return r
def get_upload_limit(self, user): if user.is_superuser: return 0 r, w, m, restrictions = get_effective_permissions_and_restrictions( user, self) if restrictions: try: return int(restrictions['uploadlimit']) except (ValueError, KeyError): pass return getattr(settings, 'UPLOAD_LIMIT', 0)
def is_downloadable_by(self, user): r, w, m, restrictions = get_effective_permissions_and_restrictions(user, self.storage) # if size or download restrictions exist, no direct download of a media file is allowed if restrictions and ( restrictions.has_key("width") or restrictions.has_key("height") or restrictions.get("download", "yes") == "no" ): return False else: return r
def is_downloadable_by(self, user, original=True): r, w, m, restrictions = get_effective_permissions_and_restrictions( user, self.storage) # if size or download restrictions exist, no direct download of a # media file is allowed if (restrictions and ((original and 'width' in restrictions) or (original and 'height' in restrictions) or restrictions.get('download', 'yes') == 'no')): return False else: return r
def _check_playable(user, media): restrictions = get_effective_permissions_and_restrictions( user, media.storage)[3] return not restrictions or restrictions.get('download') != 'only'
def get_image_for_record(record, user=None, width=100000, height=100000, passwords={}, crop_to_square=False, force_reprocess=False, loris_name=False): media = get_media_for_record(record, user, passwords) q = Q(mimetype__startswith='image/') if settings.FFMPEG_EXECUTABLE: # also support video and audio q = q | Q(mimetype__startswith='video/') | \ Q(mimetype__startswith='audio/') q = q | Q(mimetype='application/pdf') | Q(url__endswith='.pptx') media = media.select_related('storage').filter(q) if not media: return None map(lambda m: m.identify(lazy=True), media) media = sorted(media, _imgsizecmp, reverse=True) # find matching media last = None for m in media: if m.width > width or m.height > height: # Image still larger than given dimensions last = m elif (m.width == width and m.height <= height) or \ (m.width <= width and m.height == height): # exact match break else: # Now we have a smaller image m = last or m break # m is now equal or larger to requested size, or smaller but closest # to the requested size # check what user size restrictions are restrictions = get_effective_permissions_and_restrictions(user, m.storage)[3] if restrictions: try: width = min(width, int(restrictions.get('width', width))) height = min(height, int(restrictions.get('height', height))) except ValueError: logging.exception('Invalid height/width restrictions: %s' % repr(restrictions)) # see if image needs resizing if (m.width > width or m.height > height or m.mimetype != 'image/jpeg' or not m.is_local() or force_reprocess): def derivative_image(master, width, height): if not master.file_exists(): logging.error('Image derivative failed for media %d, ' 'cannot find file "%s"' % (master.id, master.get_absolute_file_path())) return None, (None, None) from PIL import ImageFile ImageFile.MAXBLOCK = 16 * 1024 * 1024 # Import here to avoid circular reference # TODO: need to move all these functions out of __init__.py from multimedia import get_image, overlay_image_with_mimetype_icon try: file = get_image(master) image = Image.open(file) if crop_to_square: w, h = image.size if w > h: image = image.crop( ((w - h) / 2, 0, (w - h) / 2 + h, h)) elif w < h: image = image.crop( (0, (h - w) / 2, w, (h - w) / 2 + w)) image.thumbnail((width, height), Image.ANTIALIAS) image = overlay_image_with_mimetype_icon( image, master.mimetype) output = StringIO.StringIO() if image.mode != "RGB": image = image.convert("RGB") image.save(output, 'JPEG', quality=85, optimize=True) return output.getvalue(), image.size except Exception, e: logging.exception('Image derivative failed for media %d (%s)' % (master.id, e)) return None, (None, None) # See if a derivative already exists name = '%s-%sx%s%s.jpg' % (m.id, width, height, 'sq' if crop_to_square else '') sp = m.storage.get_derivative_storage_path() if sp: path = os.path.join(sp, name) if not os.path.exists(path) or os.path.getsize(path) == 0: output, (w, h) = derivative_image(m, width, height) if output: with file(path, 'wb') as f: f.write(output) else: return None return path else: return None
def _check_playable(user, media): restrictions = get_effective_permissions_and_restrictions( user, media.storage)[3] return not restrictions or restrictions.get('download') != 'only'