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-- Prosody IM v0.2
-- Copyright (C) 2008 Matthew Wild
-- Copyright (C) 2008 Waqas Hussain
--
-- This program is free software; you can redistribute it and/or
-- modify it under the terms of the GNU General Public License
-- as published by the Free Software Foundation; either version 2
-- of the License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
--
require "util.stanza"
local st = stanza;
local tostring = tostring;
local pairs = pairs;
local ipairs = ipairs;
local type = type;
local print = print;
local format = string.format;
local m_random = math.random;
local t_insert = table.insert;
local t_remove = table.remove;
local t_concat = table.concat;
local t_concatall = function (t, sep) local tt = {}; for _, s in ipairs(t) do t_insert(tt, tostring(s)); end return t_concat(tt, sep); end
local sm_destroy_session = import("core.sessionmanager", "destroy_session");
local default_log = require "util.logger".init("xmlhandlers");
local error = error;
module "xmlhandlers"
local ns_prefixes = {
["http://www.w3.org/XML/1998/namespace"] = "xml";
}
function init_xmlhandlers(session, stream_callbacks)
local ns_stack = { "" };
local curr_ns, name = "";
local curr_tag;
local chardata = {};
local xml_handlers = {};
local log = session.log or default_log;
local cb_streamopened = stream_callbacks.streamopened;
local cb_streamclosed = stream_callbacks.streamclosed;
local cb_error = stream_callbacks.error or function (session, e) error("XML stream error: "..tostring(e)); end;
local cb_handlestanza = stream_callbacks.handlestanza;
local stream_tag = stream_callbacks.stream_tag;
local stanza
function xml_handlers:StartElement(tagname, attr)
if stanza and #chardata > 0 then
-- We have some character data in the buffer
stanza:text(t_concat(chardata));
chardata = {};
end
local curr_ns,name = tagname:match("^(.+)|([%w%-]+)$");
if curr_ns ~= "jabber:server" then
attr.xmlns = curr_ns;
end
-- FIXME !!!!!
for i, k in ipairs(attr) do
if type(k) == "string" then
local ns, nm = k:match("^([^|]+)|?([^|]-)$")
if ns and nm then
ns = ns_prefixes[ns];
if ns then
attr[ns..":"..nm] = attr[k];
attr[i] = ns..":"..nm;
attr[k] = nil;
end
end
end
end
if not stanza then --if we are not currently inside a stanza
if session.notopen then
if tagname == stream_tag then
if cb_streamopened then
cb_streamopened(session, attr);
end
else
-- Garbage before stream?
cb_error(session, "no-stream");
end
return;
end
if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
cb_error(session, "invalid-top-level-element");
end
stanza = st.stanza(name, attr);
curr_tag = stanza;
else -- we are inside a stanza, so add a tag
attr.xmlns = nil;
if curr_ns ~= "jabber:server" and curr_ns ~= "jabber:client" then
attr.xmlns = curr_ns;
end
stanza:tag(name, attr);
end
end
function xml_handlers:CharacterData(data)
if stanza then
t_insert(chardata, data);
end
end
function xml_handlers:EndElement(tagname)
curr_ns,name = tagname:match("^(.+)|([%w%-]+)$");
if (not stanza) or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then
if tagname == stream_tag then
if cb_streamclosed then
cb_streamclosed(session);
end
return;
elseif name == "error" then
cb_error(session, "stream-error", stanza);
else
cb_error(session, "parse-error", "unexpected-element-close", name);
end
end
if stanza and #chardata > 0 then
-- We have some character data in the buffer
stanza:text(t_concat(chardata));
chardata = {};
end
-- Complete stanza
if #stanza.last_add == 0 then
cb_handlestanza(session, stanza);
stanza = nil;
else
stanza:up();
end
end
return xml_handlers;
end
return init_xmlhandlers;
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