prosody
21f0d80f244a
plugins/mod_message.lua

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plugins/mod_message.lua @ 2306:21f0d80f244a

mod_proxy65: Throttle connections to prevent senders flooding the server's buffers if the receiver doesn't receive fast enough
author Matthew Wild <mwild1@gmail.com>
date Thu, 03 Dec 2009 14:15:30 +0000
parent 1522:569d58d21612
child 2923:b7049746bd29
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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10 local full_sessions = full_sessions;
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11 local bare_sessions = bare_sessions;
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12
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13 local st = require "util.stanza";
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14 local jid_bare = require "util.jid".bare;
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15 local jid_split = require "util.jid".split;
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16 local user_exists = require "core.usermanager".user_exists;
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17 local offlinemanager = require "core.offlinemanager";
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18 local t_insert = table.insert;
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19
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20 local function process_to_bare(bare, origin, stanza)
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21 local user = bare_sessions[bare];
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22
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23 local t = stanza.attr.type;
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24 if t == "error" then
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25 -- discard
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26 elseif t == "groupchat" then
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27 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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28 elseif t == "headline" then
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29 if user then
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30 for _, session in pairs(user.sessions) do
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31 if session.presence and session.priority >= 0 then
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32 session.send(stanza);
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33 end
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34 end
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35 end -- current policy is to discard headlines if no recipient is available
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36 else -- chat or normal message
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37 if user then -- some resources are connected
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38 local recipients = user.top_resources;
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39 if recipients then
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40 for i=1,#recipients do
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41 recipients[i].send(stanza);
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42 end
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43 return true;
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44 end
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45 end
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46 -- no resources are online
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47 local node, host = jid_split(bare);
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48 if user_exists(node, host) then
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49 -- TODO apply the default privacy list
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50 offlinemanager.store(node, host, stanza);
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51 else
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52 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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53 end
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54 end
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55 return true;
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56 end
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57
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58 module:hook("message/full", function(data)
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59 -- message to full JID recieved
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60 local origin, stanza = data.origin, data.stanza;
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61
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62 local session = full_sessions[stanza.attr.to];
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63 if session then
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64 -- TODO fire post processing event
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65 session.send(stanza);
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66 return true;
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67 else -- resource not online
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68 return process_to_bare(jid_bare(stanza.attr.to), origin, stanza);
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69 end
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70 end);
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71
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72 module:hook("message/bare", function(data)
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73 -- message to bare JID recieved
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74 local origin, stanza = data.origin, data.stanza;
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75
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76 return process_to_bare(stanza.attr.to or (origin.username..'@'..origin.host), origin, stanza);
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77 end);
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78
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79 module:add_feature("msgoffline");