--- Prosody IM v0.3
--- Copyright (C) 2008 Matthew Wild
--- Copyright (C) 2008 Waqas Hussain
---
+-- 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 match, sub = string.match, string.sub;
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
- local node, nodepos = match(jid, "^([^@]+)@()");
+ 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;
+ return jid and match(jid, "^[^/]+");
end
-function prepped_split(jid)
- local node, host, resource = split(jid);
+local function _prepped_split(jid)
+ local node, host, resource = _split(jid);
if host then
+ if sub(host, -1, -1) == "." then -- Strip empty root label
+ host = sub(host, 1, -2);
+ end
host = nameprep(host);
if not host then return; end
if node then
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
+local function _join(node, host, resource)
+ if not host then return end
+ if node and resource then
+ return node.."@"..host.."/"..resource;
+ elseif node then
+ return node.."@"..host;
+ elseif resource then
+ return host.."/"..resource;
end
return host;
end
+join = _join;
+
+function prep(jid)
+ local node, host, resource = _prepped_split(jid);
+ return _join(node, host, resource);
+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;