Mercurial > libervia-backend
view libervia/backend/plugins/plugin_misc_identity.py @ 4294:a0ed5c976bf8 default tip @
component conferences, plugin XEP-0167, XEP-0298: add stream user metadata:
A/V conference now adds user metadata about the stream it is forwarding through XEP-0298.
This is parsed and added to metadata during confirmation on client side.
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author | Goffi <goffi@goffi.org> |
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date | Tue, 06 Aug 2024 23:43:11 +0200 |
parents | ff88a807852d |
children |
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#!/usr/bin/env python3 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) # 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 collections import namedtuple import io from pathlib import Path from base64 import b64encode import hashlib from typing import Any, Coroutine, Dict, List, Optional, Union from twisted.internet import defer, threads from twisted.words.protocols.jabber import jid from libervia.backend.core import exceptions from libervia.backend.core.constants import Const as C from libervia.backend.core.i18n import _ from libervia.backend.core.log import getLogger from libervia.backend.core.xmpp import SatXMPPEntity from libervia.backend.memory import persistent from libervia.backend.tools import image from libervia.backend.tools import utils from libervia.backend.tools.common import data_format try: from PIL import Image except: raise exceptions.MissingModule( "Missing module pillow, please download/install it from https://python-pillow.github.io" ) log = getLogger(__name__) IMPORT_NAME = "IDENTITY" PLUGIN_INFO = { C.PI_NAME: "Identity Plugin", C.PI_IMPORT_NAME: IMPORT_NAME, C.PI_TYPE: C.PLUG_TYPE_MISC, C.PI_MODES: C.PLUG_MODE_BOTH, C.PI_PROTOCOLS: [], C.PI_DEPENDENCIES: [], C.PI_RECOMMENDATIONS: ["XEP-0045"], C.PI_MAIN: "Identity", C.PI_HANDLER: "no", C.PI_DESCRIPTION: _("""Identity manager"""), } Callback = namedtuple("Callback", ("origin", "get", "set", "priority")) AVATAR_DIM = (128, 128) class Identity: def __init__(self, host): log.info(_("Plugin Identity initialization")) self.host = host self._m = host.plugins.get("XEP-0045") self.metadata = { "avatar": { "type": dict, # convert avatar path to avatar metadata (and check validity) "set_data_filter": self.avatar_set_data_filter, # update profile avatar, so all frontends are aware "set_post_treatment": self.avatar_set_post_treatment, "update_is_new_data": self.avatar_update_is_new_data, "update_data_filter": self.avatar_update_data_filter, # we store the metadata in database, to restore it on next connection # (it is stored only for roster entities) "store": True, "store_serialisation": self._avatar_ser, "store_deserialisation": self._avatar_deser, }, "nicknames": { "type": list, # accumulate all nicknames from all callbacks in a list instead # of returning only the data from the first successful callback "get_all": True, # append nicknames from roster, resource, etc. "get_post_treatment": self.nicknames_get_post_treatment, "update_is_new_data": self.nicknames_update_is_new_data, "store": True, }, "description": { "type": str, "get_all": True, "get_post_treatment": self.description_get_post_treatment, "store": True, }, } host.trigger.add("roster_update", self._roster_update_trigger) host.memory.set_signal_on_update("avatar") host.memory.set_signal_on_update("nicknames") host.bridge.add_method( "identity_get", ".plugin", in_sign="sasbs", out_sign="s", method=self._get_identity, async_=True, ) host.bridge.add_method( "identities_get", ".plugin", in_sign="asass", out_sign="s", method=self._get_identities, async_=True, ) host.bridge.add_method( "identities_base_get", ".plugin", in_sign="s", out_sign="s", method=self._get_base_identities, async_=True, ) host.bridge.add_method( "identity_set", ".plugin", in_sign="ss", out_sign="", method=self._set_identity, async_=True, ) host.bridge.add_method( "avatar_get", ".plugin", in_sign="sbs", out_sign="s", method=self._getAvatar, async_=True, ) host.bridge.add_method( "avatar_set", ".plugin", in_sign="sss", out_sign="", method=self._set_avatar, async_=True, ) async def profile_connecting(self, client): client._identity_update_lock = [] # we restore known identities from database client._identity_storage = persistent.LazyPersistentBinaryDict( "identity", client.profile ) stored_data = await client._identity_storage.all() to_delete = [] for key, value in stored_data.items(): entity_s, name = key.split("\n") try: metadata = self.metadata[name] except KeyError: log.debug(f"removing {key} from storage: not an allowed metadata name") to_delete.append(key) continue if value is not None: deser_method = metadata.get("store_deserialisation") if deser_method is not None: value = deser_method(value) entity = jid.JID(entity_s) if name == "avatar": if value is not None: try: cache_uid = value["cache_uid"] if not cache_uid: raise ValueError filename = value["filename"] if not filename: raise ValueError except (ValueError, KeyError): log.warning( f"invalid data for {entity} avatar, it will be deleted: " f"{value}" ) to_delete.append(key) continue cache = self.host.common_cache.get_metadata(cache_uid) if cache is None: log.debug( f"purging avatar for {entity}: it is not in cache anymore" ) to_delete.append(key) continue self.host.memory.update_entity_data(client, entity, name, value, silent=True) for key in to_delete: await client._identity_storage.adel(key) def _roster_update_trigger(self, client, roster_item): old_item = client.roster.get_item(roster_item.jid) if old_item is None or old_item.name != roster_item.name: log.debug( f"roster nickname has been updated to {roster_item.name!r} for " f"{roster_item.jid}" ) defer.ensureDeferred( self.update( client, IMPORT_NAME, "nicknames", [roster_item.name], roster_item.jid ) ) return True def register( self, origin: str, metadata_name: str, cb_get: Union[Coroutine, defer.Deferred], cb_set: Union[Coroutine, defer.Deferred], priority: int = 0, ): """Register callbacks to handle identity metadata @param origin: namespace of the plugin managing this metadata @param metadata_name: name of metadata can be: - avatar - nicknames @param cb_get: method to retrieve a metadata the method will get client and metadata names to retrieve as arguments. @param cb_set: method to set a metadata the method will get client, metadata name to set, and value as argument. @param priority: priority of this method for the given metadata. methods with bigger priorities will be called first """ if not metadata_name in self.metadata.keys(): raise ValueError(f"Invalid metadata_name: {metadata_name!r}") callback = Callback(origin=origin, get=cb_get, set=cb_set, priority=priority) cb_list = self.metadata[metadata_name].setdefault("callbacks", []) cb_list.append(callback) cb_list.sort(key=lambda c: c.priority, reverse=True) def get_identity_jid(self, client, peer_jid): """Return jid to use to set identity metadata if it's a jid of a room occupant, full jid will be used otherwise bare jid will be used if None, bare jid of profile will be used @return (jid.JID): jid to use for avatar """ if peer_jid is None: return client.jid.userhostJID() if self._m is None: return peer_jid.userhostJID() else: return self._m.get_bare_or_full(client, peer_jid) def check_type(self, metadata_name, value): """Check that type used for a metadata is the one declared in self.metadata""" value_type = self.metadata[metadata_name]["type"] if not isinstance(value, value_type): raise ValueError( f"{value} has wrong type: it is {type(value)} while {value_type} was " f"expected" ) def get_field_type(self, metadata_name: str) -> str: """Return the type the requested field @param metadata_name: name of the field to check @raise KeyError: the request field doesn't exist """ return self.metadata[metadata_name]["type"] async def get( self, client: SatXMPPEntity, metadata_name: str, entity: Optional[jid.JID], use_cache: bool = True, prefilled_values: Optional[Dict[str, Any]] = None, ): """Retrieve identity metadata of an entity if metadata is already in cache, it is returned. Otherwise, registered callbacks will be tried in priority order (bigger to lower) @param metadata_name: name of the metadata must be one of self.metadata key the name will also be used as entity data name in host.memory @param entity: entity for which avatar is requested None to use profile's jid @param use_cache: if False, cache won't be checked @param prefilled_values: map of origin => value to use when `get_all` is set """ entity = self.get_identity_jid(client, entity) try: metadata = self.metadata[metadata_name] except KeyError: raise ValueError(f"Invalid metadata name: {metadata_name!r}") get_all = metadata.get("get_all", False) if use_cache: try: data = self.host.memory.get_entity_datum(client, entity, metadata_name) except (KeyError, exceptions.UnknownEntityError): pass else: return data try: callbacks = metadata["callbacks"] except KeyError: log.warning( _("No callback registered for {metadata_name}").format( metadata_name=metadata_name ) ) return [] if get_all else None if get_all: all_data = [] elif prefilled_values is not None: raise exceptions.InternalError( "prefilled_values can only be used when `get_all` is set" ) for callback in callbacks: try: if prefilled_values is not None and callback.origin in prefilled_values: data = prefilled_values[callback.origin] log.debug( f"using prefilled values {data!r} for {metadata_name} with " f"{callback.origin}" ) else: data = await defer.ensureDeferred(callback.get(client, entity)) except exceptions.CancelError: continue except Exception as e: log.warning( _( "Error while trying to get {metadata_name} with {callback}: {e}" ).format(callback=callback.get, metadata_name=metadata_name, e=e) ) else: if data: self.check_type(metadata_name, data) if get_all: if isinstance(data, list): all_data.extend(data) else: all_data.append(data) else: break else: data = None if get_all: data = all_data post_treatment = metadata.get("get_post_treatment") if post_treatment is not None: data = await utils.as_deferred(post_treatment, client, entity, data) self.host.memory.update_entity_data(client, entity, metadata_name, data) if metadata.get("store", False): if data is not None: ser_method = metadata.get("store_serialisation") if ser_method is not None: data = ser_method(data) key = f"{entity}\n{metadata_name}" await client._identity_storage.aset(key, data) return data async def set(self, client, metadata_name, data, entity=None): """Set identity metadata for an entity Registered callbacks will be tried in priority order (bigger to lower) @param metadata_name(str): name of the metadata must be one of self.metadata key the name will also be used to set entity data in host.memory @param data(object): value to set @param entity(jid.JID, None): entity for which avatar is requested None to use profile's jid """ entity = self.get_identity_jid(client, entity) metadata = self.metadata[metadata_name] data_filter = metadata.get("set_data_filter") if data_filter is not None: data = await utils.as_deferred(data_filter, client, entity, data) self.check_type(metadata_name, data) try: callbacks = metadata["callbacks"] except KeyError: log.warning( _("No callback registered for {metadata_name}").format( metadata_name=metadata_name ) ) return exceptions.FeatureNotFound(f"Can't set {metadata_name} for {entity}") for callback in callbacks: try: await defer.ensureDeferred(callback.set(client, data, entity)) except exceptions.CancelError: continue except Exception as e: log.warning( _( "Error while trying to set {metadata_name} with {callback}: {e}" ).format(callback=callback.set, metadata_name=metadata_name, e=e) ) else: break else: raise exceptions.FeatureNotFound(f"Can't set {metadata_name} for {entity}") post_treatment = metadata.get("set_post_treatment") if post_treatment is not None: await utils.as_deferred(post_treatment, client, entity, data) async def update( self, client: SatXMPPEntity, origin: str, metadata_name: str, data: Any, entity: Optional[jid.JID], ): """Update a metadata in cache This method may be called by plugins when an identity metadata is available. @param origin: namespace of the plugin which is source of the metadata """ entity = self.get_identity_jid(client, entity) if (entity, metadata_name) in client._identity_update_lock: log.debug(f"update is locked for {entity}'s {metadata_name}") return metadata = self.metadata[metadata_name] try: cached_data = self.host.memory.get_entity_datum(client, entity, metadata_name) except (KeyError, exceptions.UnknownEntityError): # metadata is not cached, we do the update pass else: # metadata is cached, we check if the new value differs from the cached one try: update_is_new_data = metadata["update_is_new_data"] except KeyError: update_is_new_data = self.default_update_is_new_data if data is None: if cached_data is None: log.debug( f"{metadata_name} for {entity} is already disabled, nothing to " f"do" ) return elif cached_data is None: pass elif not update_is_new_data(client, entity, cached_data, data): log.debug( f"{metadata_name} for {entity} is already in cache, nothing to " f"do" ) return # we can't use the cache, so we do the update log.debug(f"updating {metadata_name} for {entity}") if metadata.get("get_all", False): # get_all is set, meaning that we have to check all plugins # so we first delete current cache try: self.host.memory.del_entity_datum(client, entity, metadata_name) except (KeyError, exceptions.UnknownEntityError): pass # then fill it again by calling get, which will retrieve all values # we lock update to avoid infinite recursions (update can be called during # get callbacks) client._identity_update_lock.append((entity, metadata_name)) await self.get(client, metadata_name, entity, prefilled_values={origin: data}) client._identity_update_lock.remove((entity, metadata_name)) return if data is not None: data_filter = metadata["update_data_filter"] if data_filter is not None: data = await utils.as_deferred(data_filter, client, entity, data) self.check_type(metadata_name, data) self.host.memory.update_entity_data(client, entity, metadata_name, data) if metadata.get("store", False): key = f"{entity}\n{metadata_name}" if data is not None: ser_method = metadata.get("store_serialisation") if ser_method is not None: data = ser_method(data) await client._identity_storage.aset(key, data) def default_update_is_new_data(self, client, entity, cached_data, new_data): return new_data != cached_data def _getAvatar(self, entity, use_cache, profile): client = self.host.get_client(profile) entity = jid.JID(entity) if entity else None d = defer.ensureDeferred(self.get(client, "avatar", entity, use_cache)) d.addCallback(lambda data: data_format.serialise(data)) return d def _set_avatar(self, file_path, entity, profile_key=C.PROF_KEY_NONE): client = self.host.get_client(profile_key) entity = jid.JID(entity) if entity else None return defer.ensureDeferred(self.set(client, "avatar", file_path, entity)) def _blocking_cache_avatar(self, source: str, avatar_data: dict[str, Any]): """This method is executed in a separated thread""" if avatar_data["media_type"] == "image/svg+xml": # for vector image, we save directly img_buf = open(avatar_data["path"], "rb") else: # for bitmap image, we check size and resize if necessary try: img = Image.open(avatar_data["path"]) except IOError as e: raise exceptions.DataError(f"Can't open image: {e}") if img.size != AVATAR_DIM: img.thumbnail(AVATAR_DIM) if img.size[0] != img.size[1]: # we need to crop first left, upper = (0, 0) right, lower = img.size offset = abs(right - lower) / 2 if right == min(img.size): upper += offset lower -= offset else: left += offset right -= offset img = img.crop((left, upper, right, lower)) img_buf = io.BytesIO() # PNG is well supported among clients, so we convert to this format img.save(img_buf, "PNG") img_buf.seek(0) avatar_data["media_type"] = "image/png" media_type = avatar_data["media_type"] avatar_data["base64"] = image_b64 = b64encode(img_buf.read()).decode() img_buf.seek(0) image_hash = hashlib.sha1(img_buf.read()).hexdigest() img_buf.seek(0) with self.host.common_cache.cache_data(source, image_hash, media_type) as f: f.write(img_buf.read()) avatar_data["path"] = Path(f.name) avatar_data["filename"] = avatar_data["path"].name avatar_data["cache_uid"] = image_hash async def cache_avatar(self, source: str, avatar_data: Dict[str, Any]) -> None: """Resize if necessary and cache avatar @param source: source importing the avatar (usually it is plugin's import name), will be used in cache metadata @param avatar_data: avatar metadata as build by [avatar_set_data_filter] will be updated with following keys: path: updated path using cached file filename: updated filename using cached file base64: resized and base64 encoded avatar cache_uid: SHA1 hash used as cache unique ID """ await threads.deferToThread(self._blocking_cache_avatar, source, avatar_data) async def avatar_set_data_filter(self, client, entity, file_path): """Convert avatar file path to dict data""" file_path = Path(file_path) if not file_path.is_file(): raise ValueError(f"There is no file at {file_path} to use as avatar") avatar_data = { "path": file_path, "filename": file_path.name, "media_type": image.guess_type(file_path), } media_type = avatar_data["media_type"] if media_type is None: raise ValueError(f"Can't identify type of image at {file_path}") if not media_type.startswith("image/"): raise ValueError(f"File at {file_path} doesn't appear to be an image") await self.cache_avatar(IMPORT_NAME, avatar_data) return avatar_data async def avatar_set_post_treatment(self, client, entity, avatar_data): """Update our own avatar""" await self.update(client, IMPORT_NAME, "avatar", avatar_data, entity) def avatar_build_metadata( self, path: Path, media_type: Optional[str] = None, cache_uid: Optional[str] = None, ) -> Optional[Dict[str, Union[str, Path, None]]]: """Helper method to generate avatar metadata @param path(str, Path, None): path to avatar file avatar file must be in cache None if avatar is explicitely not set @param media_type(str, None): type of the avatar file (MIME type) @param cache_uid(str, None): UID of avatar in cache @return (dict, None): avatar metadata None if avatar is not set """ if path is None: return None else: if cache_uid is None: raise ValueError("cache_uid must be set if path is set") path = Path(path) if media_type is None: media_type = image.guess_type(path) return { "path": path, "filename": path.name, "media_type": media_type, "cache_uid": cache_uid, } def avatar_update_is_new_data(self, client, entity, cached_data, new_data): return new_data["path"] != cached_data["path"] async def avatar_update_data_filter(self, client, entity, data): if not isinstance(data, dict): raise ValueError(f"Invalid data type ({type(data)}), a dict is expected") mandatory_keys = {"path", "filename", "cache_uid"} if not data.keys() >= mandatory_keys: raise ValueError(f"missing avatar data keys: {mandatory_keys - data.keys()}") return data def _avatar_ser(self, data: dict) -> dict: if data.get("path"): # Path instance can't be stored data = data.copy() data["path"] = str(data["path"]) return data def _avatar_deser(self, data: dict) -> dict: if data.get("path"): data["path"] = Path(data["path"]) return data async def nicknames_get_post_treatment(self, client, entity, plugin_nicknames): """Prepend nicknames from core locations + set default nickname nicknames are checked from many locations, there is always at least one nickname. First nickname of the list can be used in priority. Nicknames are appended in this order: - roster, plugins set nicknames - if no nickname is found, user part of jid is then used, or bare jid if there is no user part. For MUC, room nick is always put first """ nicknames = [] # for MUC we add resource if entity.resource: # get_identity_jid let the resource only if the entity is a MUC room # occupant jid nicknames.append(entity.resource) # we first check roster (if we are not in a component) if not client.is_component: roster_item = client.roster.get_item(entity.userhostJID()) if roster_item is not None and roster_item.name: # user set name has priority over entity set name nicknames.append(roster_item.name) nicknames.extend(plugin_nicknames) if not nicknames: if entity.user: nicknames.append(entity.user.capitalize()) else: nicknames.append(entity.userhost()) # we remove duplicates while preserving order with dict return list(dict.fromkeys(nicknames)) def nicknames_update_is_new_data(self, client, entity, cached_data, new_nicknames): return not set(new_nicknames).issubset(cached_data) async def description_get_post_treatment( self, client: SatXMPPEntity, entity: jid.JID, plugin_description: List[str] ) -> str: """Join all descriptions in a unique string""" return "\n".join(plugin_description) def _get_identity(self, entity_s, metadata_filter, use_cache, profile): entity = jid.JID(entity_s) client = self.host.get_client(profile) d = defer.ensureDeferred( self.get_identity(client, entity, metadata_filter, use_cache) ) d.addCallback(data_format.serialise) return d async def get_identity( self, client: SatXMPPEntity, entity: Optional[jid.JID] = None, metadata_filter: Optional[List[str]] = None, use_cache: bool = True, ) -> Dict[str, Any]: """Retrieve identity of an entity @param entity: entity to check @param metadata_filter: if not None or empty, only return metadata in this filter @param use_cache: if False, cache won't be checked should be True most of time, to avoid useless network requests @return: identity data """ identities = [] id_data = {"identities": identities} if not metadata_filter: metadata_names = self.metadata.keys() else: metadata_names = metadata_filter for metadata_name in metadata_names: id_data[metadata_name] = await self.get( client, metadata_name, entity, use_cache ) if entity is not None: try: disco_infos = await self.host.memory.disco.get_infos(client, entity) except Exception as e: log.exception(f"Can't get disco infos for {entity}.") else: for (category, type_), name in disco_infos.identities.items(): identities.append({"category": category, "type": type_, "name": name}) return id_data def _get_identities(self, entities_s, metadata_filter, profile): entities = [jid.JID(e) for e in entities_s] client = self.host.get_client(profile) d = defer.ensureDeferred(self.get_identities(client, entities, metadata_filter)) d.addCallback(lambda d: data_format.serialise({str(j): i for j, i in d.items()})) return d async def get_identities( self, client: SatXMPPEntity, entities: List[jid.JID], metadata_filter: Optional[List[str]] = None, ) -> dict: """Retrieve several identities at once @param entities: entities from which identities must be retrieved @param metadata_filter: same as for [get_identity] @return: identities metadata where key is jid if an error happens while retrieve a jid entity, it won't be present in the result (and a warning will be logged) """ identities = {} get_identity_list = [] for entity_jid in entities: get_identity_list.append( defer.ensureDeferred( self.get_identity( client, entity=entity_jid, metadata_filter=metadata_filter, ) ) ) identities_result = await defer.DeferredList(get_identity_list) for idx, (success, identity) in enumerate(identities_result): entity_jid = entities[idx] if not success: log.warning(f"Can't get identity for {entity_jid}") else: identities[entity_jid] = identity return identities def _get_base_identities(self, profile_key): client = self.host.get_client(profile_key) d = defer.ensureDeferred(self.get_base_identities(client)) d.addCallback(lambda d: data_format.serialise({str(j): i for j, i in d.items()})) return d async def get_base_identities( self, client: SatXMPPEntity, ) -> dict: """Retrieve identities for entities in roster + own identity + invitations @param with_guests: if True, get affiliations of people invited by email """ if client.is_component: entities = [client.jid.userhostJID()] else: entities = client.roster.get_jids() + [client.jid.userhostJID()] return await self.get_identities(client, entities, ["avatar", "nicknames"]) def _set_identity(self, id_data_s, profile): client = self.host.get_client(profile) id_data = data_format.deserialise(id_data_s) return defer.ensureDeferred(self.set_identity(client, id_data)) async def set_identity(self, client, id_data): """Update profile's identity @param id_data(dict): data to update, key can be one of self.metadata keys """ if not id_data.keys() <= self.metadata.keys(): raise ValueError( f"Invalid metadata names: {id_data.keys() - self.metadata.keys()}" ) for metadata_name, data in id_data.items(): try: await self.set(client, metadata_name, data) except Exception as e: log.warning( _("Can't set metadata {metadata_name!r}: {reason}").format( metadata_name=metadata_name, reason=e ) )