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require "util.stanza"
local st = stanza;
local tostring = tostring;
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 error = error;
module "xmlhandlers"
function init_xmlhandlers(session)
local ns_stack = { "" };
local curr_ns = "";
local curr_tag;
local chardata = {};
local xml_handlers = {};
local log = session.log;
local print = function (...) log("info", "xmlhandlers", t_concatall({...}, "\t")); end
local send = session.send;
local stanza
function xml_handlers:StartElement(name, attr)
if stanza and #chardata > 0 then
-- We have some character data in the buffer
stanza:text(t_concat(chardata));
chardata = {};
end
curr_ns,name = name:match("^(.+):(%w+)$");
if not stanza then
if session.notopen then
if name == "stream" then
session.host = attr.to or error("Client failed to specify destination hostname");
session.version = attr.version or 0;
session.streamid = m_random(1000000, 99999999);
print(session, session.host, "Client opened stream");
send("<?xml version='1.0'?>");
send(format("<stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s'>", session.streamid, session.host));
--send("<stream:features>");
--send("<mechanism>PLAIN</mechanism>");
--send [[<register xmlns="http://jabber.org/features/iq-register"/> ]]
--send("</stream:features>");
log("info", "core", "Stream opened successfully");
session.notopen = nil;
return;
end
error("Client failed to open stream successfully");
end
if name ~= "iq" and name ~= "presence" and name ~= "message" then
error("Client sent invalid top-level stanza");
end
stanza = st.stanza(name, { to = attr.to, type = attr.type, id = attr.id, xmlns = curr_ns });
curr_tag = stanza;
else
attr.xmlns = curr_ns;
stanza:tag(name, attr);
end
end
function xml_handlers:CharacterData(data)
if stanza then
t_insert(chardata, data);
end
end
function xml_handlers:EndElement(name)
curr_ns,name = name:match("^(.+):(%w+)$");
if (not stanza) or #stanza.last_add < 0 or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then error("XML parse error in client stream"); 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
session.stanza_dispatch(stanza);
stanza = nil;
else
stanza:up();
end
end
return xml_handlers;
end
return init_xmlhandlers;
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