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mod_muc_moderation/mod_muc_moderation.lua @ 4049:78f1de5301fc
mod_adhoc_dataforms_demo: Fix duplicate field prevention
It's supposed to only include each type of form field once per form at
most but it didn't note which fields it had added already. No idea what
the probability was anyways, probably pretty low.
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 23 Jun 2020 19:40:55 +0200 (2020-06-23) |
parent | 3902:341850e8866f |
child | 4177:a38e6a8a781a |
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-- mod_muc_moderation -- -- Copyright (C) 2015-2020 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 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); 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", "Insufficient privileges")); return true; 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 -- Replacements 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(); 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 }) :tag("retract", { xmlns = xmlns_retract }):up(); if reason then tombstone:text_tag("reason", reason); announcement:text_tag("reason", reason); end if muc_log_archive.set then -- Tombstone 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);