+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 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 tostring = tostring;
-local print = print
+local nodeprep = require "util.encodings".stringprep.nodeprep;
+local nameprep = require "util.encodings".stringprep.nameprep;
+local resourceprep = require "util.encodings".stringprep.resourceprep;
+
+local escapes = {
+ [" "] = "\\20"; ['"'] = "\\22";
+ ["&"] = "\\26"; ["'"] = "\\27";
+ ["/"] = "\\2f"; [":"] = "\\3a";
+ ["<"] = "\\3c"; [">"] = "\\3e";
+ ["@"] = "\\40"; ["\\"] = "\\5c";
+};
+local unescapes = {};
+for k,v in pairs(escapes) do unescapes[v] = k; end
+
module "jid"
-function split(jid)
+local function _split(jid)
if not jid then return; end
- -- TODO verify JID, and return; if invalid
- local node, nodelen = match(jid, "^([^@]+)@()");
- local host, hostlen = match(jid, "^([^@/]+)()", nodelen)
+ 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, "^/(.+)$", hostlen);
- if (not host) or ((not resource) and #jid >= hostlen) then return nil, nil, nil; end
+ local resource = match(jid, "^/(.+)$", 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);
+ 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
+
+function join(node, host, resource)
+ if node and host and resource then
+ return node.."@"..host.."/"..resource;
+ elseif node and host then
+ return node.."@"..host;
+ elseif host and resource then
+ return host.."/"..resource;
elseif host then
return host;
end
- return nil;
+ return nil; -- Invalid JID
end
+function compare(jid, acl)
+ -- compare jid to single acl rule
+ -- TODO compare to table of rules?
+ local jid_node, jid_host, jid_resource = _split(jid);
+ local acl_node, acl_host, acl_resource = _split(acl);
+ if ((acl_node ~= nil and acl_node == jid_node) or acl_node == nil) and
+ ((acl_host ~= nil and acl_host == jid_host) or acl_host == nil) and
+ ((acl_resource ~= nil and acl_resource == jid_resource) or acl_resource == nil) then
+ return true
+ end
+ return false
+end
+
+function escape(s) return s and (s:gsub(".", escapes)); end
+function unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end
+
return _M;