prosody
d10957394a3c
util/jid.lua

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util/jid.lua @ 12975:d10957394a3c

util: Prefix module imports with prosody namespace
author Kim Alvefur <zash@zash.se>
date Fri, 17 Mar 2023 16:23:16 +0100
parent 12769:27e1d4354274
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rev   line source
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Matthew Wild <mwild1@gmail.com>
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diff changeset
1 -- Prosody IM
2923
b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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Florian Zeitz <florob@babelmonkeys.de>
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4 --
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b1885732e979 GPL->MIT!
Matthew Wild <mwild1@gmail.com>
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5 -- This project is MIT/X11 licensed. Please see the
b1885732e979 GPL->MIT!
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
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10
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a7199fc8a50e util.jid: Import select() into local (fixes traceback, tests on Lua 5.2)
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11 local select = select;
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12 local match, sub = string.match, string.sub;
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13 local nodeprep = require "prosody.util.encodings".stringprep.nodeprep;
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14 local nameprep = require "prosody.util.encodings".stringprep.nameprep;
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15 local resourceprep = require "prosody.util.encodings".stringprep.resourceprep;
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16
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17 local escapes = {
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18 [" "] = "\\20"; ['"'] = "\\22";
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19 ["&"] = "\\26"; ["'"] = "\\27";
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20 ["/"] = "\\2f"; [":"] = "\\3a";
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21 ["<"] = "\\3c"; [">"] = "\\3e";
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22 ["@"] = "\\40"; ["\\"] = "\\5c";
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23 };
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24 local unescapes = {};
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25 local backslash_escapes = {};
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26 for k,v in pairs(escapes) do
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27 unescapes[v] = k;
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28 backslash_escapes[v] = v:gsub("\\", escapes)
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29 end
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31 local _ENV = nil;
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32 -- luacheck: std none
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33
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34 local function split(jid)
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35 if jid == nil then return; end
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36 local node, nodepos = match(jid, "^([^@/]+)@()");
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37 local host, hostpos = match(jid, "^([^@/]+)()", nodepos);
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38 local resource = host and match(jid, "^/(.+)$", hostpos);
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39 if (host == nil) or ((resource == nil) and #jid >= hostpos) then return nil, nil, nil; end
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40 return node, host, resource;
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41 end
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42
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43 local function bare(jid)
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44 local node, host = split(jid);
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45 if node ~= nil and host ~= nil then
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46 return node.."@"..host;
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47 end
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48 return host;
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49 end
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50
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51 local function prepped_split(jid, strict)
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52 local node, host, resource = split(jid);
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53 if host ~= nil and host ~= "." then
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54 if sub(host, -1, -1) == "." then -- Strip empty root label
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55 host = sub(host, 1, -2);
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56 end
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57 host = nameprep(host, strict);
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58 if host == nil then return; end
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59 if node ~= nil then
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60 node = nodeprep(node, strict);
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61 if node == nil then return; end
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62 end
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63 if resource ~= nil then
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64 resource = resourceprep(resource, strict);
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65 if resource == nil then return; end
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66 end
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67 return node, host, resource;
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68 end
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69 end
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70
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71 local function join(node, host, resource)
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72 if host == nil then return end
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73 if node ~= nil and resource ~= nil then
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74 return node.."@"..host.."/"..resource;
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75 elseif node ~= nil then
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76 return node.."@"..host;
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77 elseif resource ~= nil then
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78 return host.."/"..resource;
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79 end
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80 return host;
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81 end
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82
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83 local function prep(jid, strict)
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84 local node, host, resource = prepped_split(jid, strict);
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85 return join(node, host, resource);
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86 end
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87
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88 local function compare(jid, acl)
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89 -- compare jid to single acl rule
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90 -- TODO compare to table of rules?
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91 local jid_node, jid_host, jid_resource = split(jid);
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92 local acl_node, acl_host, acl_resource = split(acl);
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93 if (acl_node == nil or acl_node == jid_node) and
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94 (acl_host == nil or acl_host == jid_host) and
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95 (acl_resource == nil or acl_resource == jid_resource) then
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96 return true
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97 end
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98 return false
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99 end
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100
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101 local function node(jid)
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102 return (select(1, split(jid)));
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103 end
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104
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105 local function host(jid)
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106 return (select(2, split(jid)));
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107 end
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108
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109 local function resource(jid)
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110 return (select(3, split(jid)));
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111 end
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112
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113 -- TODO Forbid \20 at start and end of escaped output per XEP-0106 v1.1
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114 local function escape(s) return s and (s:gsub("\\%x%x", backslash_escapes):gsub("[\"&'/:<>@ ]", escapes)); end
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115 local function unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end
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116
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117 return {
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118 split = split;
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119 bare = bare;
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120 prepped_split = prepped_split;
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121 join = join;
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122 prep = prep;
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123 compare = compare;
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diff changeset
124 node = node;
1859e07ae082 util.jid+tests: Add simple helpers... node(), host() and resource() for extracting specific parts of a JID
Matthew Wild <mwild1@gmail.com>
parents: 6891
diff changeset
125 host = host;
1859e07ae082 util.jid+tests: Add simple helpers... node(), host() and resource() for extracting specific parts of a JID
Matthew Wild <mwild1@gmail.com>
parents: 6891
diff changeset
126 resource = resource;
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6340
diff changeset
127 escape = escape;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6340
diff changeset
128 unescape = unescape;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6340
diff changeset
129 };