File

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−-- Copyright (C) 2009 Thilo Cestonaro
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−-- Copyright (C) 2009-2011 Florian Zeitz
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−--
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−-- This file is MIT/X11 licensed. Please see the
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−-- COPYING file in the source package for more information.
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−--
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−
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−local it = require "prosody.util.iterators";
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−local st = require "prosody.util.stanza";
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−local jid_host = require "prosody.util.jid".host;
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−local adhoc_handle_cmd = module:require "adhoc".handle_cmd;
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−local xmlns_cmd = "http://jabber.org/protocol/commands";
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−local commands = {};
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−
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−module:add_feature(xmlns_cmd);
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−
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−local function check_permissions(event, node, command, execute)
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−	return (command.permission == "check" and module:may("adhoc:"..node, event, not execute))
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−	    or (command.permission == "local_user" and jid_host(event.stanza.attr.from) == module.host)
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−	    or (command.permission == "any");
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−end
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−
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−module:hook("host-disco-info-node", function (event)
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−	local stanza, origin, reply, node = event.stanza, event.origin, event.reply, event.node;
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−	if commands[node] then
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−		local command = commands[node];
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−		if check_permissions(event, node, command) then
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−			reply:tag("identity", { name = command.name,
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−			    category = "automation", type = "command-node" }):up();
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−			reply:tag("feature", { var = xmlns_cmd }):up();
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−			reply:tag("feature", { var = "jabber:x:data" }):up();
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−			event.exists = true;
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−		else
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−			origin.send(st.error_reply(stanza, "auth", "forbidden", "This item is not available to you"));
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−			return true;
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−		end
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−	elseif node == xmlns_cmd then
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−		reply:tag("identity", { name = "Ad-Hoc Commands",
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−		    category = "automation", type = "command-list" }):up();
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−		    event.exists = true;
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−	end
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−end);
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−
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−module:hook("host-disco-items-node", function (event)
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−	local reply, disco_node = event.reply, event.node;
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−	if disco_node ~= xmlns_cmd then
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−		return;
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−	end
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−
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−	for node, command in it.sorted_pairs(commands) do
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−		if check_permissions(event, node, command) then
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−			reply:tag("item", { name = command.name,
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−			    node = node, jid = module:get_host() });
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−			reply:up();
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−		end
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−	end
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−	event.exists = true;
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−end);
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−
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−module:hook("iq-set/host/"..xmlns_cmd..":command", function (event)
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−	local origin, stanza = event.origin, event.stanza;
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−	local node = stanza.tags[1].attr.node
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−	local command = commands[node];
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−	if command then
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−		if not check_permissions(event, node, command, true) then
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−			origin.send(st.error_reply(stanza, "auth", "forbidden", "You don't have permission to execute this command"):up()
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−				:add_child(command:cmdtag("canceled")
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−				:tag("note", {type="error"}):text("You don't have permission to execute this command")));
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−			return true
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−		end
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−		-- User has permission now execute the command
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−		adhoc_handle_cmd(command, origin, stanza);
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−		return true;
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−	end
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−end, 500);
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−
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−local function adhoc_added(event)
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−	local item = event.item;
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−	-- Dang this was noisy
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−	module:log("debug", "Command added by mod_%s: %q, %q", item._provided_by or "<unknown module>", item.name, item.node);
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−	commands[item.node] = item;
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−end
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−
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−local function adhoc_removed(event)
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−	commands[event.item.node] = nil;
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−end
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−
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−module:handle_items("adhoc", adhoc_added, adhoc_removed); -- COMPAT pre module:provides() introduced in 0.9
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−module:handle_items("adhoc-provider", adhoc_added, adhoc_removed);