mod_adhoc: Imported from prosody-modules, thanks Florob!

2 files changed, 145 insertions, 0 deletions

diff --git a/plugins/adhoc/adhoc.lib.lua b/plugins/adhoc/adhoc.lib.lua
new file mode 100644
index 00000000..6193cafd
--- /dev/null
+++ b/plugins/adhoc/adhoc.lib.lua
@@ -0,0 +1,78 @@
+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);
+		cmdtag = command:cmdtag("canceled", sessionid);
+	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:form());
+		elseif name == "result" then
+			cmdtag:add_child(content.layout: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;
diff --git a/plugins/adhoc/mod_adhoc.lua b/plugins/adhoc/mod_adhoc.lua
new file mode 100644
index 00000000..6a5165ed
--- /dev/null
+++ b/plugins/adhoc/mod_adhoc.lua
@@ -0,0 +1,67 @@
+-- Copyright (C) 2009 Thilo Cestonaro
+-- 
+-- This file is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local st = require "util.stanza";
+local is_admin = require "core.usermanager".is_admin;
+local adhoc_handle_cmd = module:require "adhoc".handle_cmd;
+local xmlns_cmd = "http://jabber.org/protocol/commands";
+local xmlns_disco = "http://jabber.org/protocol/disco";
+local commands = {};
+
+module:add_feature(xmlns_cmd);
+
+module:hook("iq/host/"..xmlns_disco.."#items:query", function (event)
+	local origin, stanza = event.origin, event.stanza;
+	-- TODO: Is this correct, or should is_admin be changed?
+	local privileged = is_admin(stanza.attr.from)
+	    or is_admin(stanza.attr.from, stanza.attr.to); 
+	if stanza.attr.type == "get" and stanza.tags[1].attr.node
+	    and stanza.tags[1].attr.node == xmlns_cmd then
+		reply = st.reply(stanza);
+		reply:tag("query", { xmlns = xmlns_disco.."#items",
+		    node = xmlns_cmd });
+		for node, command in pairs(commands) do
+			if (command.permission == "admin" and privileged)
+			    or (command.permission == "user") then
+				reply:tag("item", { name = command.name,
+				    node = node, jid = module:get_host() });
+				reply:up();
+			end
+		end
+		origin.send(reply);
+		return true;
+	end
+end, 500);
+
+module:hook("iq/host", function (event)
+	local origin, stanza = event.origin, event.stanza;
+	if stanza.attr.type == "set" and stanza.tags[1]
+	    and stanza.tags[1].name == "command" then 
+		local node = stanza.tags[1].attr.node
+		-- TODO: Is this correct, or should is_admin be changed?
+		local privileged = is_admin(event.stanza.attr.from)
+		    or is_admin(stanza.attr.from, stanza.attr.to);
+		if commands[node] then
+			if commands[node].permission == "admin"
+			    and not privileged then
+				origin.send(st.error_reply(stanza, "auth", "forbidden", "You don't have permission to execute this command"):up()
+				    :add_child(commands[node]:cmdtag("canceled")
+					:tag("note", {type="error"}):text("You don't have permission to execute this command")));
+				return true
+			end
+			-- User has permission now execute the command
+			return adhoc_handle_cmd(commands[node], origin, stanza);
+		end
+	end
+end, 500);
+
+module:hook("item-added/adhoc", function (event)
+	commands[event.item.node] = event.item;
+end, 500);
+
+module:hook("item-removed/adhoc", function (event)
+	commands[event.item.node] = nil;
+end, 500);