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mod_muc_bot/mod_muc_bot.lua @ 4738:5aee8d86629a
mod_bookmarks2: Fix handling of nick and password elements
This form of child retrieval fails when the stanza elements internally
don't have an 'xmlns' attribute, which can happen sometimes for some
reason, including when they have been constructed via the stanza builder
API. When that is the case then the explicit namespace arguemnt does not
match the nil value of the internal attribute. Calling `:get_child()`
without the namespace argument does the right thing here, with both nil
and the parent namespace as valid values for the internal attribute.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Wed, 03 Nov 2021 21:11:55 +0100 |
parent | 4567:bcf4518d18d4 |
child | 4824:205b9d06fe6b |
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local st = require "util.stanza"; local jid = require "util.jid"; local bots = module:get_option_set("known_bots", {}); module:hook("muc-occupant-groupchat", function(event) if event.occupant then return end -- skip messages from actual occupants local room = event.room; if bots:contains(jid.bare(event.from)) or bots:contains(jid.host(event.from)) then local nick = room:get_registered_nick(jid); if not nick then -- Allow bot to specify its own nick, but we're appending '[bot]' to it. -- FIXME HATS!!! nick = event.stanza:get_child_text("nick", "http://jabber.org/protocol/nick"); nick = (nick or jid.bare(event.from)) .. "[bot]"; end local virtual_occupant_jid = jid.prep(room.jid .. "/" .. nick, true); if not virtual_occupant_jid then module:send(st.error_reply(event.stanza, "modify", "jid-malformed", "Nickname must pass strict validation", room.jid)); return true; end local occupant = room:new_occupant(module.host, virtual_occupant_jid); local join = st.presence({from = event.from; to = virtual_occupant_jid}); local dest_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"}); occupant:set_session(event.from, join, true); room:save_occupant(occupant); room:publicise_occupant_status(occupant, dest_x); -- Inject virtual occupant to trick all the other hooks on this event that -- this is an actual legitimate participant. event.occupant = occupant; end end, 66); module:hook("muc-occupant-pre-join", function(event) local room = event.room; local nick = jid.resource(event.occupant.nick); if nick:sub(-5, -1) == "[bot]" then event.origin.send(st.error_reply(event.stanza, "modify", "policy-violation", "Only known bots may use the [bot] suffix", room.jid)); return true; end end, 3); module:hook("muc-occupant-pre-change", function(event) local room = event.room; local nick = jid.resource(event.dest_occupant.nick); if nick:sub(-5, -1) == "[bot]" then event.origin.send(st.error_reply(event.stanza, "modify", "policy-violation", "Only known bots may use the [bot] suffix", room.jid)); return true; end end, 3); if not module:get_option_boolean("bots_get_messages", true) then module:hook("muc-broadcast-message", function (event) event.room:broadcast(event.stanza, function (nick, occupant) if nick:sub(-5, -1) == "[bot]" or bots:contains(occupant.bare_jid) or bots:contains(jid.host(occupant.bare_jid)) then return false; else return true; end end); return true; end, -100); end if module:get_option_boolean("ignore_bot_errors", true) then module:hook("message/full", function (event) local stanza = event.stanza; if stanza.attr.type == "error" then if bots:contains(jid.bare(stanza.attr.from)) or bots:contains(jid.host(stanza.attr.from)) then module:log("debug", "Ignoring error from known bot"); return true; end end end, 1); end assert(string.sub("foo[bot]", -5, -1) == "[bot]", "substring indicies, how do they work?");