Mercurial > verse / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/adhoc.lib.lua	Thu Aug 26 17:52:16 2010 +0100
@@ -0,0 +1,85 @@
+-- Copyright (C) 2009-2010 Florian Zeitz
+--
+-- This file is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local st, uuid = require "util.stanza", require "util.uuid";
+
+local xmlns_cmd = "http://jabber.org/protocol/commands";
+
+local states = {}
+
+local _M = {};
+
+function _cmdtag(desc, status, sessionid, action)
+	local cmd = st.stanza("command", { xmlns = xmlns_cmd, node = desc.node, status = status });
+	if sessionid then cmd.attr.sessionid = sessionid; end
+	if action then cmd.attr.action = action; end
+
+	return cmd;
+end
+
+function _M.new(name, node, handler, permission)
+	return { name = name, node = node, handler = handler, cmdtag = _cmdtag, permission = (permission or "user") };
+end
+
+function _M.handle_cmd(command, origin, stanza)
+	local sessionid = stanza.tags[1].attr.sessionid or uuid.generate();
+	local dataIn = {};
+	dataIn.to = stanza.attr.to;
+	dataIn.from = stanza.attr.from;
+	dataIn.action = stanza.tags[1].attr.action or "execute";
+	dataIn.form = stanza.tags[1]:child_with_ns("jabber:x:data");
+
+	local data, state = command:handler(dataIn, states[sessionid]);
+	states[sessionid] = state;
+	local stanza = st.reply(stanza);
+	if data.status == "completed" then
+		states[sessionid] = nil;
+		cmdtag = command:cmdtag("completed", sessionid);
+	elseif data.status == "canceled" then
+		states[sessionid] = nil;
+		cmdtag = command:cmdtag("canceled", sessionid);
+	elseif data.status == "error" then
+		states[sessionid] = nil;
+		stanza = st.error_reply(stanza, data.error.type, data.error.condition, data.error.message);
+		origin.send(stanza);
+		return true;
+	else 
+		cmdtag = command:cmdtag("executing", sessionid);
+	end
+
+	for name, content in pairs(data) do
+		if name == "info" then
+			cmdtag:tag("note", {type="info"}):text(content):up();
+		elseif name == "warn" then
+			cmdtag:tag("note", {type="warn"}):text(content):up();
+		elseif name == "error" then
+			cmdtag:tag("note", {type="error"}):text(content.message):up();
+		elseif name =="actions" then
+			local actions = st.stanza("actions");
+			for _, action in ipairs(content) do
+				if (action == "prev") or (action == "next") or (action == "complete") then
+					actions:tag(action):up();
+				else
+					module:log("error", 'Command "'..command.name..
+						'" at node "'..command.node..'" provided an invalid action "'..action..'"');
+				end
+			end
+			cmdtag:add_child(actions);
+		elseif name == "form" then
+			cmdtag:add_child((content.layout or content):form(content.data));
+		elseif name == "result" then
+			cmdtag:add_child((content.layout or content):form(content.data, "result"));
+		elseif name == "other" then
+			cmdtag:add_child(content);
+		end
+	end
+	stanza:add_child(cmdtag);
+	origin.send(stanza);
+
+	return true;
+end
+
+return _M;