prosody
4ef18b2dcc21
util/discohelper.lua

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util/discohelper.lua @ 1954:4ef18b2dcc21

xmppserver_listener: Fix typo (thanks Jorj)
author Matthew Wild <mwild1@gmail.com>
date Thu, 15 Oct 2009 14:16:22 +0100
parent 1523:841d61be198f
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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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b1885732e979 GPL->MIT!
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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
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11 local t_insert = table.insert;
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12 local jid_split = require "util.jid".split;
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13 local ipairs = ipairs;
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14 local st = require "util.stanza";
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15
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16 module "discohelper";
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17
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18 local function addDiscoItemsHandler(self, jid, func)
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19 if self.item_handlers[jid] then
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20 t_insert(self.item_handlers[jid], func);
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21 else
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22 self.item_handlers[jid] = {func};
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23 end
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24 end
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25
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26 local function addDiscoInfoHandler(self, jid, func)
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27 if self.info_handlers[jid] then
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28 t_insert(self.info_handlers[jid], func);
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29 else
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30 self.info_handlers[jid] = {func};
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31 end
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32 end
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33
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34 local function handle(self, stanza)
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35 if stanza.name == "iq" and stanza.tags[1].name == "query" then
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36 local query = stanza.tags[1];
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37 local to = stanza.attr.to;
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38 local from = stanza.attr.from
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39 local node = query.attr.node or "";
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40 local to_node, to_host = jid_split(to);
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41
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42 local reply = st.reply(stanza):query(query.attr.xmlns);
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43 local handlers;
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44 if query.attr.xmlns == "http://jabber.org/protocol/disco#info" then -- select handler set
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45 handlers = self.info_handlers;
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46 elseif query.attr.xmlns == "http://jabber.org/protocol/disco#items" then
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47 handlers = self.item_handlers;
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48 end
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49 local handler;
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50 local found; -- to keep track of any handlers found
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51 if to_node then -- handlers which get called always
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52 handler = handlers["*node"];
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53 else
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54 handler = handlers["*host"];
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55 end
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56 if handler then -- call always called handler
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57 for _, h in ipairs(handler) do
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58 if h(reply, to, from, node) then found = true; end
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59 end
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60 end
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61 handler = handlers[to]; -- get the handler
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62 if not handler then -- if not found then use default handler
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63 if to_node then
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64 handler = handlers["*defaultnode"];
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65 else
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66 handler = handlers["*defaulthost"];
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67 end
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68 end
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69 if handler then
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70 for _, h in ipairs(handler) do
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71 if h(reply, to, from, node) then found = true; end
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72 end
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73 end
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74 if found then return reply; end -- return the reply if there was one
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75 return st.error_reply(stanza, "cancel", "service-unavailable");
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76 end
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77 end
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78
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79 function new()
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80 return {
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81 item_handlers = {};
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82 info_handlers = {};
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83 addDiscoItemsHandler = addDiscoItemsHandler;
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84 addDiscoInfoHandler = addDiscoInfoHandler;
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85 handle = handle;
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86 };
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87 end
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88
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89 return _M;