prosody
6d9b2da9888f
util/discohelper.lua

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util/discohelper.lua @ 594:6d9b2da9888f

Small logging adjustment for mod_posix
author Matthew Wild <mwild1@gmail.com>
date Sun, 07 Dec 2008 03:12:56 +0000
parent 539:cbcadb1a6166
child 615:4ae3e81513f3
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1 -- Prosody IM v0.1
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2 -- Copyright (C) 2008 Matthew Wild
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3 -- Copyright (C) 2008 Waqas Hussain
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4 --
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5 -- This program is free software; you can redistribute it and/or
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6 -- modify it under the terms of the GNU General Public License
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7 -- as published by the Free Software Foundation; either version 2
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8 -- of the License, or (at your option) any later version.
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9 --
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10 -- This program is distributed in the hope that it will be useful,
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11 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 -- GNU General Public License for more details.
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14 --
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15 -- You should have received a copy of the GNU General Public License
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16 -- along with this program; if not, write to the Free Software
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17 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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18 --
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19
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20
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21
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22 local t_insert = table.insert;
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23 local jid_split = require "util.jid".split;
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24 local ipairs = ipairs;
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25 local st = require "util.stanza";
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26
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27 module "discohelper";
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28
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29 local function addDiscoItemsHandler(self, jid, func)
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30 if self.item_handlers[jid] then
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31 t_insert(self.item_handlers[jid], func);
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32 else
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33 self.item_handlers[jid] = {func};
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34 end
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35 end
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36
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37 local function addDiscoInfoHandler(self, jid, func)
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38 if self.info_handlers[jid] then
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39 t_insert(self.info_handlers[jid], func);
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40 else
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41 self.info_handlers[jid] = {func};
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42 end
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43 end
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44
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45 local function handle(self, stanza)
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46 if stanza.name == "iq" and stanza.tags[1].name == "query" then
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47 local query = stanza.tags[1];
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48 local to = stanza.attr.to;
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49 local from = stanza.attr.from
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50 local node = query.attr.node or "";
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51 local to_node, to_host = jid_split(to);
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52
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53 local reply = st.reply(stanza):query(query.attr.xmlns);
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54 local handlers;
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55 if query.attr.xmlns == "http://jabber.org/protocol/disco#info" then -- select handler set
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56 handlers = self.info_handlers;
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57 elseif query.attr.xmlns == "http://jabber.org/protocol/disco#items" then
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58 handlers = self.item_handlers;
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59 end
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60 local handler;
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61 local found; -- to keep track of any handlers found
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62 if to_node then -- handlers which get called always
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63 handler = handlers["*node"];
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64 else
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65 handler = handlers["*host"];
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66 end
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67 if handler then -- call always called handler
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68 for _, h in ipairs(handler) do
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69 if h(reply, to, from, node) then found = true; end
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70 end
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71 end
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72 handler = handlers[to]; -- get the handler
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73 if not handler then -- if not found then use default handler
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74 if to_node then
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75 handler = handlers["*defaultnode"];
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76 else
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77 handler = handlers["*defaulthost"];
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78 end
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79 end
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80 if handler then
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81 for _, h in ipairs(handler) do
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82 if h(reply, to, from, node) then found = true; end
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83 end
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84 end
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85 if found then return reply; end -- return the reply if there was one
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86 return st.error_reply(stanza, "cancel", "service-unavailable");
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87 end
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88 end
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89
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90 function new()
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91 return {
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92 item_handlers = {};
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93 info_handlers = {};
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94 addDiscoItemsHandler = addDiscoItemsHandler;
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95 addDiscoInfoHandler = addDiscoInfoHandler;
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96 handle = handle;
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97 };
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98 end
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99
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100 return _M;