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89 lines
2.4 KiB
89 lines
2.4 KiB
-- Prosody IM v0.4
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-- Copyright (C) 2008-2009 Matthew Wild
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-- Copyright (C) 2008-2009 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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local t_insert = table.insert;
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local jid_split = require "util.jid".split;
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local ipairs = ipairs;
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local st = require "util.stanza";
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module "discohelper";
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local function addDiscoItemsHandler(self, jid, func)
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if self.item_handlers[jid] then
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t_insert(self.item_handlers[jid], func);
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else
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self.item_handlers[jid] = {func};
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end
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end
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local function addDiscoInfoHandler(self, jid, func)
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if self.info_handlers[jid] then
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t_insert(self.info_handlers[jid], func);
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else
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self.info_handlers[jid] = {func};
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end
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end
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local function handle(self, stanza)
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if stanza.name == "iq" and stanza.tags[1].name == "query" then
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local query = stanza.tags[1];
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local to = stanza.attr.to;
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local from = stanza.attr.from
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local node = query.attr.node or "";
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local to_node, to_host = jid_split(to);
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local reply = st.reply(stanza):query(query.attr.xmlns);
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local handlers;
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if query.attr.xmlns == "http://jabber.org/protocol/disco#info" then -- select handler set
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handlers = self.info_handlers;
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elseif query.attr.xmlns == "http://jabber.org/protocol/disco#items" then
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handlers = self.item_handlers;
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end
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local handler;
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local found; -- to keep track of any handlers found
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if to_node then -- handlers which get called always
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handler = handlers["*node"];
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else
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handler = handlers["*host"];
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end
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if handler then -- call always called handler
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for _, h in ipairs(handler) do
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if h(reply, to, from, node) then found = true; end
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end
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end
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handler = handlers[to]; -- get the handler
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if not handler then -- if not found then use default handler
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if to_node then
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handler = handlers["*defaultnode"];
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else
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handler = handlers["*defaulthost"];
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end
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end
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if handler then
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for _, h in ipairs(handler) do
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if h(reply, to, from, node) then found = true; end
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end
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end
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if found then return reply; end -- return the reply if there was one
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return st.error_reply(stanza, "cancel", "service-unavailable");
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end
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end
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function new()
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return {
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item_handlers = {};
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info_handlers = {};
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addDiscoItemsHandler = addDiscoItemsHandler;
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addDiscoInfoHandler = addDiscoInfoHandler;
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handle = handle;
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};
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end
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return _M;
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