GPL->MIT!

[prosody.git] / util / jid.lua

diff --git a/util/jid.lua b/util/jid.lua
index 9d01e2afa4966f2b2676fda15415f06b678b268d..68449aa1c72bd934f42967b5dd444c7d64269b58 100644 (file)
--- a/util/jid.lua
+++ b/util/jid.lua
@@ -1,8 +1,66 @@
+-- Prosody IM v0.2
+-- Copyright (C) 2008 Matthew Wild
+-- Copyright (C) 2008 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)
-       return match(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
+
+function bare(jid)
+       local node, host = split(jid);
+       if node and host then
+               return node.."@"..host;
+       end
+       return host;
+end
+
+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
+
+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;