Mercurial > prosody-modules
view mod_muc_defaults/mod_muc_defaults.lua @ 4651:8231774f5bfd
mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8
The `body:sub()` call risks splitting the string in the middle of a
multi-byte UTF-8 sequence. This should have been caught by util.stanza
validation, but that would have caused some havoc, at the very least causing
the notification to not be sent.
There have been no reports of this happening. Likely because this module
isn't widely deployed among users with languages that use many longer UTF-8
sequences.
The util.encodings.utf8.valid() function is O(n) where only the last
sequence really needs to be checked, but it's in C and expected to be fast.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sun, 22 Aug 2021 13:22:59 +0200 |
parents | a81516906822 |
children |
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local log = module._log; local params = module:get_option("default_mucs", {}); local jid_bare = require "util.jid".bare; local function set_affiliations(room, affiliations) for affiliation, jids in pairs(affiliations) do for i, jid in pairs(jids) do module:log("debug", "Setting affiliation %s for jid %s", affiliation, jid); room:set_affiliation(true, jid_bare(jid), affiliation); end end end local function configure_room(room, config) local should_save = false; if config.name ~= nil then should_save = room:set_name(config.name) or should_save; end if config.description ~= nil then should_save = room:set_description(config.description) or should_save; end if config.allow_member_invites ~= nil then should_save = room:set_allow_member_invites(config.allow_member_invites) or should_save; end if config.change_subject ~= nil then should_save = room:set_changesubject(config.change_subject) or should_save; end if config.history_length ~= nil then should_save = room:set_historylength(config.history_length) or should_save; end if config.lang ~= nil then should_save = room:set_language(config.lang) or should_save; end if config.members_only ~= nil then should_save = room:set_members_only(config.members_only) or should_save; end if config.moderated ~= nil then should_save = room:set_moderated(config.moderated) or should_save; end if config.persistent ~= nil then should_save = room:set_persistent(config.persistent) or should_save; end if config.presence_broadcast ~= nil then should_save = room:set_presence_broadcast(config.presence_broadcast) or should_save; end if config.public ~= nil then should_save = room:set_hidden(not config.public) or should_save; end if config.public_jids ~= nil then should_save = room:set_whois(config.public_jids and "anyone" or "moderators") or should_save; end if config.logging ~= room._data.logging then room._data.logging = config.logging; should_save = true; end if should_save then room:save(true); end end local i, room_data; for i, room_data in pairs(params) do local host = module.host; local room_jid = room_data.jid_node.."@"..host; local mod_muc = prosody.hosts[host].modules.muc; local room = mod_muc.get_room_from_jid(room_jid); if not room then module:log("debug", "Creating new room %s", room_jid); -- We don't pass in the config, so that the default config is set first. room = mod_muc.create_room(room_jid); else module:log("debug", "Configuring already existing room %s", room_jid); end configure_room(room, room_data.config); if room_data.affiliations then set_affiliations(room, room_data.affiliations); end end