Mercurial > prosody-modules
view mod_muc_moderation/mod_muc_moderation.lua @ 4942:e7b9bc629ecc
mod_rest: Add special handling to catch MAM results from remote hosts
Makes MAM queries to remote hosts works.
As the comment says, MAM results from users' local archives or local
MUCs are returned via origin.send() which is provided in the event and
thus already worked. Results from remote hosts go via normal stanza
routing and events, which need this extra handling to catch.
This pattern of iq-set, message+, iq-result is generally limited to MAM.
Closest similar thing might be MUC join, but to really handle that you
would need the webhook callback mechanism.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Mon, 16 May 2022 19:47:09 +0200 |
parents | 5f12c75fd210 |
children | 1071a420ff6f |
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-- mod_muc_moderation -- -- Copyright (C) 2015-2021 Kim Alvefur -- -- This file is MIT licensed. -- -- Implements: XEP-0425: Message Moderation -- -- Imports local dt = require "util.datetime"; local id = require "util.id"; local jid = require "util.jid"; local st = require "util.stanza"; -- Plugin dependencies local mod_muc = module:depends "muc"; local muc_util = module:require "muc/util"; local valid_roles = muc_util.valid_roles; local muc_log_archive = module:open_store("muc_log", "archive"); if not muc_log_archive.set then module:log("warn", "Selected archive storage module does not support message replacement, no tombstones will be saved"); end -- Namespaces local xmlns_fasten = "urn:xmpp:fasten:0"; local xmlns_moderate = "urn:xmpp:message-moderate:0"; local xmlns_retract = "urn:xmpp:message-retract:0"; -- Discovering support module:hook("muc-disco#info", function (event) event.reply:tag("feature", { var = xmlns_moderate }):up(); end); -- Main handling module:hook("iq-set/bare/" .. xmlns_fasten .. ":apply-to", function (event) local stanza, origin = event.stanza, event.origin; -- Collect info we need local apply_to = stanza.tags[1]; local moderate_tag = apply_to:get_child("moderate", xmlns_moderate); if not moderate_tag then return end -- some other kind of fastening? local reason = moderate_tag:get_child_text("reason"); local retract = moderate_tag:get_child("retract", xmlns_retract); local room_jid = stanza.attr.to; local room_node = jid.split(room_jid); local room = mod_muc.get_room_from_jid(room_jid); local stanza_id = apply_to.attr.id; -- Permissions local actor = stanza.attr.from; local actor_nick = room:get_occupant_jid(actor); local affiliation = room:get_affiliation(actor); -- Retrieve their current role, iff they are in the room, otherwise what they -- would have based on affiliation. local role = room:get_role(actor_nick) or room:get_default_role(affiliation); if valid_roles[role or "none"] < valid_roles.moderator then origin.send(st.error_reply(stanza, "auth", "forbidden", "You need a role of at least 'moderator'")); return true; end if not actor_nick then local reserved_nickname = room:get_affiliation_data(jid.bare(actor), "reserved_nickname"); if reserved_nickname then actor_nick = room.jid .. "/" .. reserved_nickname; end end -- Original stanza to base tombstone on local original, err; if muc_log_archive.get then original, err = muc_log_archive:get(room_node, stanza_id); else -- COMPAT missing :get API err = "item-not-found"; for i, item in muc_log_archive:find(room_node, { key = stanza_id, limit = 1 }) do if i == stanza_id then original, err = item, nil; end end end if not original then if err == "item-not-found" then origin.send(st.error_reply(stanza, "modify", "item-not-found")); else origin.send(st.error_reply(stanza, "wait", "internal-server-error")); end return true; end local announcement = st.message({ from = room_jid, type = "groupchat", id = id.medium(), }) :tag("apply-to", { xmlns = xmlns_fasten, id = stanza_id }) :tag("moderated", { xmlns = xmlns_moderate, by = actor_nick }) if retract then announcement:tag("retract", { xmlns = xmlns_retract }):up(); end if reason then announcement:text_tag("reason", reason); end if muc_log_archive.set and retract then local tombstone = st.message({ from = original.attr.from, type = "groupchat", id = original.attr.id }) :tag("moderated", { xmlns = xmlns_moderate, by = actor_nick }) :tag("retracted", { xmlns = xmlns_retract, stamp = dt.datetime() }):up(); if reason then tombstone:text_tag("reason", reason); end local was_replaced = muc_log_archive:set(room_node, stanza_id, tombstone); if not was_replaced then origin.send(st.error_reply(stanza, "wait", "internal-server-error")); return true; end end -- Done, tell people about it module:log("info", "Message with id '%s' in room %s moderated by %s, reason: %s", stanza_id, room_jid, actor, reason); room:broadcast_message(announcement); origin.send(st.reply(stanza)); return true; end); module:hook("muc-message-is-historic", function (event) -- Ensure moderation messages are stored if event.stanza.attr.from == event.room.jid then return event.stanza:get_child("apply-to", xmlns_fasten); end end, 1);