* libs/web: Added Logout support

* libs/web: Fixed a bug with an invalid calling convention in luci.dispatcher
* libs/sys: Fixed rudimentary posix.crypt detection

i18n/english/luasrc/i18n/default.en.lua

@@ -40,6 +40,7 @@ ipaddress = "IP-Address"
 
 legend = "Legend"
 library = "Library"
+logout = "Logout"
 
 key = "Key"
 

i18n/german/luasrc/i18n/default.de.lua

@@ -42,6 +42,7 @@ legend = "Legende"
 library = "Bibliothek"
 load = "Last"
 login = "Anmelden"
+logout = "Abmelden"
 
 key = "Schlüssel"
 

libs/core/luasrc/sys.lua

@@ -289,7 +289,7 @@ function user.checkpasswd(username, password)
 	local account = user.getuser(username)
 	
 	-- FIXME: detect testing environment
-	if luci.fs.isfile("/etc/shadow") and not luci.fs.access("/etc/shadow", "r") then
+	if luci.fs.stat("/etc/shadow") and not luci.fs.access("/etc/shadow", "r") then
 		return true
 	elseif account then
 		if account.passwd == "!" then

libs/web/luasrc/dispatcher.lua

@@ -75,7 +75,7 @@ function sysauth(default)
 	
 	if user and luci.sys.user.checkpasswd(user, pass) then
 		local sid = luci.sys.uniqueid(16)
-		luci.http.header("Set-Cookie", "sysauth=" .. sid)
+		luci.http.header("Set-Cookie", "sysauth=" .. sid.."; path=/")
 		luci.sauth.write(sid, user)
 		return true
 	else
@@ -291,7 +291,7 @@ end
 
 -- Reassigns a node to another position
 function assign(path, clone, title, order)
-	local obj  = node(path)
+	local obj  = node(unpack(path))
 	obj.nodes  = nil
 	obj.module = nil
 	

modules/admin-core/luasrc/controller/admin/index.lua

@@ -40,5 +40,10 @@ function index()
 	page.target = cbi("admin_index/luci")
 	page.title  = i18n("a_i_ui", "Oberfläche")
 	
-	
+	entry({"admin", "logout"}, call("action_logout"), i18n("logout"))
+end
+
+function action_logout()
+	luci.http.header("Set-Cookie", "sysauth=; path=/")
+	luci.http.redirect(luci.dispatcher.build_url())
 end