--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_privacy/mod_privacy.lua	Fri Sep 25 16:56:50 2009 +0200
@@ -0,0 +1,214 @@
+-- Prosody IM
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
+-- Copyright (C) 2009 Thilo Cestonaro
+-- 
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+
+local prosody = prosody;
+local helpers = require "util/helpers";
+local st = require "util.stanza";
+local datamanager = require "util.datamanager";
+local privacy_lists = nil
+local bare_sessions = bare_sessions;
+
+
+function findNamedList (name)
+	local ret = nil
+	if privacy_lists.lists == nil then return nil; end
+
+	for i=1, #privacy_lists.lists do
+		if privacy_lists.lists[i].name == name then
+			ret = i;
+			break;
+		end
+	end
+	return ret;
+end
+
+function declineList (origin, stanza, which)
+	module:log("info", "User requests to decline the use of privacy list: %s", which);
+	privacy_lists[which] = nil;
+	origin.send(st.reply(stanza));
+	return true;
+end
+
+function activateList (origin, stanza, which, name)
+	module:log("info", "User requests to change the privacy list: %s, to be list named %s", which, name);
+	local ret = false;
+	local idx = findNamedList(name);
+
+	if privacy_lists[which] == nil then
+		privacy_lists[which] = "";
+	end
+	
+	if privacy_lists[which] ~= name and idx ~= nil then
+		privacy_lists[which] = name;
+		origin.send(st.reply(stanza));
+		ret = true;
+	end
+	return ret;
+end
+
+function deleteList (origin, stanza, name)
+	module:log("info", "User requests to delete privacy list: %s", name);
+	local ret = false;
+	local idx = findNamedList(name);
+
+	if idx ~= nil then
+		table.remove(privacy_lists.lists, idx);
+		origin.send(st.reply(stanza));
+		ret = true;
+	end
+	return ret;
+end
+
+function createOrReplaceList (origin, stanza, name, entries)
+	module:log("info", "User requests to create / replace list named %s, item count: %d", name, #entries);
+	local ret = true;
+	local idx = findNamedList(name);
+	local bare_jid = origin.username.."@"..origin.host;
+	
+	if privacy_lists.lists == nil then
+		privacy_lists.lists = {};
+	end
+
+	if idx == nil then
+		idx = #privacy_lists.lists + 1;
+	end
+
+	local list = {};
+	list.name = name;
+	list.items = {};
+
+	for _,item in ipairs(entries) do
+		tmp = {};
+		tmp["type"] = item.attr.type;
+		tmp["value"] = item.attr.value;
+		tmp["action"] = item.attr.action;
+		tmp["order"] = item.attr.order;
+		tmp["presence-in"] = false;
+		tmp["presence-out"] = false;
+		tmp["message"] = false;
+		tmp["iq"] = false;
+		
+		if #item.tags > 0 then
+			for _,tag in ipairs(item.tags) do
+				tmp[tag.name] = true;
+			end
+		end
+		list.items[#list.items + 1] = tmp;
+	end
+
+	privacy_lists.lists[idx] = list;
+	origin.send(st.reply(stanza));
+	if bare_sessions[bare_jid] ~= nil then
+		iq = st.iq ( { type = "set", id="push1" } );
+		iq:tag ("query", { xmlns = "jabber:iq:privacy" } );
+		iq:tag ("list", { name = list.name } ):up();
+		iq:up();
+		for resource, session in pairs(bare_sessions[bare_jid].sessions) do
+			iq.attr.to = bare_jid.."/"..resource
+			session.send(iq);
+		end
+	end
+	return true;
+end
+
+function getList(origin, stanza, name)
+	module:log("info", "User requests list named: %s", name or "nil");
+	local ret = true;
+	local idx = findNamedList(name);
+	local reply = st.reply(stanza);
+	reply = reply:tag("query", {xmlns="jabber:iq:privacy"});
+
+	if idx == nil then
+		reply:tag("active", {name=privacy_lists.active or ""}):up();
+		reply:tag("default", {name=privacy_lists.default or ""}):up();
+		if privacy_lists.lists then
+			for _,list in ipairs(privacy_lists.lists) do
+				reply:tag("list", {name=list.name}):up();
+			end		
+		end
+	else
+		list = privacy_lists.lists[idx];
+		reply = reply:tag("list", {name=list.name});
+		for _,item in ipairs(list.items) do
+			reply:tag("item", {type=item.type, value=item.value, action=item.action, order=item.order});
+			if item["message"] then reply:tag("message"):up(); end
+			if item["iq"] then reply:tag("iq"):up(); end
+			if item["presence-in"] then reply:tag("presence-in"):up(); end
+			if item["presence-out"] then reply:tag("presence-out"):up(); end
+			reply:up();
+		end
+	end
+	
+	origin.send(reply);
+	return ret;
+end
+
+--          "[tagname]/[target-type]/[payload-namespace]:[payload-tagname]"
+module:hook("iq/bare/jabber:iq:privacy:query", function(data)
+	local origin, stanza = data.origin, data.stanza;
+	
+	if stanza.attr.to == nil then -- only service requests to own bare JID
+		local query = stanza.tags[1]; -- the query element
+		local valid = false;
+		privacy_lists = datamanager.load(origin.username, origin.host, "privacy") or {};
+
+		if stanza.attr.type == "set" then
+			if #query.tags >= 1 then
+				for _,tag in ipairs(query.tags) do
+					if tag.name == "active" or tag.name == "default" then
+						if tag.attr.name == nil then -- Client declines the use of active / default list
+							valid = declineList(origin, stanza, tag.name);
+						else -- Client requests change of active / default list
+							valid = activateList(origin, stanza, tag.name, tag.attr.name);
+						end
+					elseif tag.name == "list" and tag.attr.name then -- Client adds / edits a privacy list
+						if #tag.tags == 0 then -- Client removes a privacy list
+							valid = deleteList(origin, stanza, tag.attr.name);
+						else -- Client edits a privacy list
+							valid = createOrReplaceList(origin, stanza, tag.attr.name, tag.tags)
+						end
+					end
+				end
+			end
+		elseif stanza.attr.type == "get" then
+			local name = nil;
+			if #query.tags >= 1 then
+				for _,tag in ipairs(query.tags) do
+					if tag.name == "list" then -- Client requests a privacy list from server
+						name = tag.attr.name;
+						break;
+					end
+				end
+			end
+			valid = getList(origin, stanza, name);
+		end
+
+		if valid == false then
+			origin.send(st.error_reply(stanza, "modify", "bad-request"));
+		else
+			datamanager.store(origin.username, origin.host, "privacy", privacy_lists);
+		end
+		return true;
+	end
+	return false;
+end, 500);
+
+function checkIfNeedToBeBlocked(e)
+	return false;
+end
+
+module:hook("pre-message/full", checkIfNeedToBeBlocked, 500);
+module:hook("pre-iq/bare", checkIfNeedToBeBlocked, 500);
+module:hook("pre-presence/bare", checkIfNeedToBeBlocked, 500);
+
+-- helpers.log_events(hosts["albastru.de"].events, "albastru.de");
+-- helpers.log_events(prosody.events, "*");
+
+module:log("info", "mod_privacy loaded ...");