2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
11 local select = select;
12 local match, sub = string.match, string.sub;
13 local nodeprep = require "util.encodings".stringprep.nodeprep;
14 local nameprep = require "util.encodings".stringprep.nameprep;
15 local resourceprep = require "util.encodings".stringprep.resourceprep;
18 [" "] = "\\20"; ['"'] = "\\22";
19 ["&"] = "\\26"; ["'"] = "\\27";
20 ["/"] = "\\2f"; [":"] = "\\3a";
21 ["<"] = "\\3c"; [">"] = "\\3e";
22 ["@"] = "\\40"; ["\\"] = "\\5c";
25 for k,v in pairs(escapes) do unescapes[v] = k; end
29 local function split(jid)
30 if not jid then return; end
31 local node, nodepos = match(jid, "^([^@/]+)@()");
32 local host, hostpos = match(jid, "^([^@/]+)()", nodepos)
33 if node and not host then return nil, nil, nil; end
34 local resource = match(jid, "^/(.+)$", hostpos);
35 if (not host) or ((not resource) and #jid >= hostpos) then return nil, nil, nil; end
36 return node, host, resource;
39 local function bare(jid)
40 local node, host = split(jid);
42 return node.."@"..host;
47 local function prepped_split(jid)
48 local node, host, resource = split(jid);
50 if sub(host, -1, -1) == "." then -- Strip empty root label
51 host = sub(host, 1, -2);
53 host = nameprep(host);
54 if not host then return; end
56 node = nodeprep(node);
57 if not node then return; end
60 resource = resourceprep(resource);
61 if not resource then return; end
63 return node, host, resource;
67 local function join(node, host, resource)
68 if not host then return end
69 if node and resource then
70 return node.."@"..host.."/"..resource;
72 return node.."@"..host;
74 return host.."/"..resource;
79 local function prep(jid)
80 local node, host, resource = prepped_split(jid);
81 return join(node, host, resource);
84 local function compare(jid, acl)
85 -- compare jid to single acl rule
86 -- TODO compare to table of rules?
87 local jid_node, jid_host, jid_resource = split(jid);
88 local acl_node, acl_host, acl_resource = split(acl);
89 if ((acl_node ~= nil and acl_node == jid_node) or acl_node == nil) and
90 ((acl_host ~= nil and acl_host == jid_host) or acl_host == nil) and
91 ((acl_resource ~= nil and acl_resource == jid_resource) or acl_resource == nil) then
97 local function node(jid)
98 return (select(1, split(jid)));
101 local function host(jid)
102 return (select(2, split(jid)));
105 local function resource(jid)
106 return (select(3, split(jid)));
109 local function escape(s) return s and (s:gsub(".", escapes)); end
110 local function unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end
115 prepped_split = prepped_split;