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require "util.stanza"
local st = stanza;
local t_concat = table.concat;
local format = string.format;
function init_stanza_dispatcher(session)
local iq_handlers = {};
local session_log = session.log;
local log = function (type, msg) session_log(type, "stanza_dispatcher", msg); end
local send = session.send;
iq_handlers["jabber:iq:auth"] =
function (stanza)
local username = stanza[1]:child_with_name("username");
local password = stanza[1]:child_with_name("password");
local resource = stanza[1]:child_with_name("resource");
if not (username and password and resource) then
local reply = st.reply(stanza);
send(reply:query("jabber:iq:auth")
:tag("username"):up()
:tag("password"):up()
:tag("resource"):up());
return true;
else
username, password, resource = t_concat(username), t_concat(password), t_concat(resource);
print(username, password, resource)
local reply = st.reply(stanza);
require "core.usermanager"
if usermanager.validate_credentials(session.host, username, password) then
-- Authentication successful!
session.username = username;
session.resource = resource;
if not hosts[session.host].sessions[username] then
hosts[session.host].sessions[username] = { sessions = {} };
end
hosts[session.host].sessions[username].sessions[resource] = session;
send(st.reply(stanza));
return true;
else
local reply = st.reply(stanza);
reply.attr.type = "error";
reply:tag("error", { code = "401", type = "auth" })
:tag("not-authorized", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas" });
send(reply);
return true;
end
end
end
iq_handlers["jabber:iq:roster"] =
function (stanza)
if stanza.attr.type == "get" then
session.roster = session.roster or rostermanager.getroster(session.username, session.host);
if session.roster == false then
send(st.reply(stanza)
:tag("error", { type = "wait" })
:tag("internal-server-error", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}));
return true;
else session.roster = session.roster or {};
end
local roster = st.reply(stanza)
:query("jabber:iq:roster");
for jid in pairs(session.roster) do
roster:tag("item", { jid = jid, subscription = "none" }):up();
end
send(roster);
return true;
end
end
return function (stanza)
log("info", "--> "..tostring(stanza));
if stanza.name == "iq" then
if not stanza[1] then log("warn", "<iq> without child is invalid"); return; end
if not stanza.attr.id then log("warn", "<iq> without id attribute is invalid"); end
local xmlns = stanza[1].attr.xmlns;
if not xmlns then log("warn", "Child of <iq> has no xmlns - invalid"); return; end
if (((not stanza.attr.to) or stanza.attr.to == session.host or stanza.attr.to:match("@[^/]+$")) and (stanza.attr.type == "get" or stanza.attr.type == "set")) then -- Stanza sent to us
if iq_handlers[xmlns] then
if iq_handlers[xmlns](stanza) then return; end;
end
log("warn", "Unhandled namespace: "..xmlns);
send(format("<iq type='error' id='%s'><error type='cancel'><service-unavailable/></error></iq>", stanza.attr.id));
end
end
-- Need to route stanza
if stanza.attr.to and ((not hosts[stanza.attr.to]) or hosts[stanza.attr.to].type ~= "local") then
stanza.attr.from = session.username.."@"..session.host;
session.send_to(stanza.attr.to, stanza);
end
end
end
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