net.dns: Automatically add nameserver 127.0.0.1 if /etc/resolv.conf missing or empty...

[prosody.git] / util / jid.lua

diff --git a/util/jid.lua b/util/jid.lua
index b7116fdfad5ce7983ffa78890cada05d5dcc0e4f..ccc8309c3a23a411315c6aa6bb332d5c84c1b429 100644 (file)
--- a/util/jid.lua
+++ b/util/jid.lua
@@ -1,11 +1,68 @@
+-- Prosody IM
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
+-- 
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+
 
 local match = string.match;
+local nodeprep = require "util.encodings".stringprep.nodeprep;
+local nameprep = require "util.encodings".stringprep.nameprep;
+local resourceprep = require "util.encodings".stringprep.resourceprep;
 
 module "jid"
 
-function split(jid)
-       local node = match(jid, "^([^@]+)@");
-       local server = (node and match(jid, ".-@([^@/]+)")) or match(jid, "^([^@/]+)");
-       local resource = match(jid, "/(.+)$");
-       return node, server, resource;
+local function _split(jid)
+       if not jid then return; end
+       local node, nodepos = match(jid, "^([^@]+)@()");
+       local host, hostpos = match(jid, "^([^@/]+)()", nodepos)
+       if node and not host then return nil, nil, nil; end
+       local resource = match(jid, "^/(.+)$", hostpos);
+       if (not host) or ((not resource) and #jid >= hostpos) then return nil, nil, nil; end
+       return node, host, resource;
 end
+split = _split;
+
+function bare(jid)
+       local node, host = _split(jid);
+       if node and host then
+               return node.."@"..host;
+       end
+       return host;
+end
+
+local function _prepped_split(jid)
+       local node, host, resource = _split(jid);
+       if host then
+               host = nameprep(host);
+               if not host then return; end
+               if node then
+                       node = nodeprep(node);
+                       if not node then return; end
+               end
+               if resource then
+                       resource = resourceprep(resource);
+                       if not resource then return; end
+               end
+               return node, host, resource;
+       end
+end
+prepped_split = _prepped_split;
+
+function prep(jid)
+       local node, host, resource = _prepped_split(jid);
+       if host then
+               if node then
+                       host = node .. "@" .. host;
+               end
+               if resource then
+                       host = host .. "/" .. resource;
+               end
+       end
+       return host;
+end
+
+return _M;