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annotate mod_alias/mod_alias.lua @ 4651:8231774f5bfd

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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 65082d91950e
children
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1953
0c3ba5ff7a3b mod_alias: New alias module
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1 -- Copyright (C) 2015 Travis Burtrum
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2 -- This file is MIT/X11 licensed.
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3
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4 -- set like so in prosody config, works on full or bare jids, or hosts:
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5 --aliases = {
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6 -- ["old@example.net"] = "new@example.net";
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7 -- ["you@example.com"] = "you@example.net";
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8 -- ["conference.example.com"] = "conference.example.net";
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9 --}
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10
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11 local aliases = module:get_option("aliases", {});
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12 local alias_response = module:get_option("alias_response", "User $alias can be contacted at $target");
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13
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14 local st = require "util.stanza";
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15
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16 function handle_alias(event)
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17
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18 if event.stanza.attr.type ~= "error" then
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19 local alias = event.stanza.attr.to;
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20 local target = aliases[alias];
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21 if target then
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22 local replacements = {
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23 alias = alias,
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24 target = target
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25 };
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26 local error_message = alias_response:gsub("%$([%w_]+)", function (v)
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27 return replacements[v] or nil;
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28 end);
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65082d91950e Many modules: Simplify st.message(…):tag("body"):text(…):up() into st.message(…, …)
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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29 local message = st.message({ type = "chat", from = alias, to = event.stanza.attr.from }, error_message);
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30 module:send(message);
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31 return event.origin.send(st.error_reply(event.stanza, "cancel", "gone", error_message));
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32 end
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33 end
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34
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35 end
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36
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37 module:hook("message/bare", handle_alias, 300);
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38 module:hook("message/full", handle_alias, 300);
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39 module:hook("message/host", handle_alias, 300);
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40
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41 module:hook("presence/bare", handle_alias, 300);
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42 module:hook("presence/full", handle_alias, 300);
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43 module:hook("presence/host", handle_alias, 300);