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annotate mod_isolate_host/mod_isolate_host.lua @ 4813:0a257d1402c3

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mod_muc_rtbl: Optimize case with zero hashes On the assumption that during quiet times between torrents of spam, the hash set would be empty. There would be no point in doing the operations and hashes to check for a match in that case.
author Kim Alvefur <zash@zash.se>
date Mon, 06 Dec 2021 18:19:19 +0100
parents 8e19b943c2cd
children bc75fc9400ae
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1011
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1 local jid = require "util.jid";
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2 local jid_bare, jid_split = jid.bare, jid.split;
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3 local is_admin = require "core.usermanager".is_admin;
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4 local set = require "util.set";
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5 local st = require "util.stanza";
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6
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7 local stanza_types = set.new{"message", "presence", "iq"};
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8 local jid_types = set.new{"bare", "full", "host"};
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9
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10 local except_domains = module:get_option_inherited_set("isolate_except_domains", {});
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11 local except_users = module:get_option_inherited_set("isolate_except_users", {});
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12
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13 function check_stanza(event)
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14 local origin, stanza = event.origin, event.stanza;
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15 if origin.no_host_isolation then return; end
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16 local to_user, to_host = jid_split(event.stanza.attr.to);
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17 if to_host and to_host ~= origin.host and not except_domains:contains(to_host) then
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18 if to_host:match("^[^.]+%.(.+)$") == origin.host then -- Permit subdomains
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19 except_domains:add(to_host);
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20 return;
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21 end
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22 module:log("warn", "Forbidding stanza from %s to %s", stanza.attr.from or origin.full_jid, stanza.attr.to);
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23 origin.send(st.error_reply(stanza, "auth", "forbidden", "Communication with "..to_host.." is not available"));
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24 return true;
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25 end
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26 end
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27
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28 for stanza_type in stanza_types do
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29 for jid_type in jid_types do
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30 module:hook("pre-"..stanza_type.."/"..jid_type, check_stanza, 1);
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31 end
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32 end
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33
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34 function check_user_isolated(event)
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35 local session = event.session;
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36 local bare_jid = jid_bare(session.full_jid);
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37 if is_admin(bare_jid, module.host) or except_users:contains(bare_jid) then
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38 session.no_host_isolation = true;
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39 end
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40 module:log("debug", "%s is %sisolated", session.full_jid or "[?]", session.no_host_isolation and "" or "not ");
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41 end
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42
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43 module:hook("resource-bind", check_user_isolated);