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util/jid.lua @ 10639:08e3063eb1ac
stanza_router: Add once-per-routed-stanza event, pre-stanza
author | Matthew Wild <mwild1@gmail.com> |
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date | Wed, 05 Feb 2020 17:40:50 +0000 |
parent | 10358:a77d9b3885bb |
child | 11056:0b0a42542456 |
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-- 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 select = select; 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 local _ENV = nil; -- luacheck: std none 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 local 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, strict) local node, host, resource = split(jid); if host and host ~= "." then if sub(host, -1, -1) == "." then -- Strip empty root label host = sub(host, 1, -2); end host = nameprep(host, strict); if not host then return; end if node then node = nodeprep(node, strict); if not node then return; end end if resource then resource = resourceprep(resource, strict); if not resource then return; end end return node, host, resource; end 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 local function prep(jid, strict) local node, host, resource = prepped_split(jid, strict); return join(node, host, resource); end local 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 local function node(jid) return (select(1, split(jid))); end local function host(jid) return (select(2, split(jid))); end local function resource(jid) return (select(3, split(jid))); end local function escape(s) return s and (s:gsub(".", escapes)); end local function unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end return { split = split; bare = bare; prepped_split = prepped_split; join = join; prep = prep; compare = compare; node = node; host = host; resource = resource; escape = escape; unescape = unescape; };