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annotate mod_query_client_ver/mod_query_client_ver.lua @ 2155:f24b02e0d706

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mod_presence_dedup: Attempt at saving bandwith by deduplicating presence stanzas
author Kim Alvefur <zash@zash.se>
date Sun, 03 Apr 2016 17:09:03 +0200
parents b5f9f1111a8b
children 20ebfa4ad7f4
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b5f9f1111a8b mod_query_client_ver: Query and log client software
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1 -- Query and log client software
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2
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3 local st = require"util.stanza";
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4 local uuid = require"util.uuid".generate;
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5
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6 local xmlns_iq_version = "jabber:iq:version";
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7 local version_id = uuid();
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8 local xmlns_disco_info = "http://jabber.org/protocol/disco#info";
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9 local disco_id = uuid();
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10
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11 module:hook("presence/bare", function(event)
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12 local origin, stanza = event.origin, event.stanza;
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13 if origin.type == "c2s" and not origin.presence and not stanza.attr.to then
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14 module:add_timer(1, function()
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15 if origin.type ~= "c2s" then return end
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16 origin.log("debug", "Sending version query");
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17 origin.send(st.iq({ id = version_id, type = "get", from = module.host, to = origin.full_jid }):query(xmlns_iq_version));
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18 end);
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19 end
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20 end, 1);
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21
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22 module:hook("iq-result/host/"..version_id, function(event)
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23 local origin, stanza = event.origin, event.stanza;
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24 local query = stanza:get_child("query", xmlns_iq_version);
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25 if query then
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26 local client = query:get_child_text("name");
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27 if client then
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28 local version = query:get_child_text("version");
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29 if version then
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30 client = client .. " version " .. version;
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31 end
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32 origin.log("info", "Running %s", client);
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33 return true;
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34 end
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35 end
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36 origin.send(st.iq({ id = disco_id, type = "get", from = module.host, to = origin.full_jid }):query(xmlns_disco_info));
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37 end);
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38
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39 module:hook("iq-result/host/"..disco_id, function(event)
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40 local origin, stanza = event.origin, event.stanza;
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41 local query = stanza:get_child("query", xmlns_disco_info);
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42 if query then
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43 local ident = query:get_child("identity");
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44 if ident and ident.attr.name then
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45 origin.log("info", "Running %s", ident.attr.name);
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46 return true;
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47 end
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48 end
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49 -- Unknown software
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50 end);
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51