prosody
4533c9b906b0
util/jid.lua

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util/jid.lua @ 12983:4533c9b906b0

util.format: Tweak serialization of %q formatted entries Improves serialization of function references especially, the built-in default handling of that in util.serialization is not the most informative. Now, along with the function metatable from util.startup, the actual function can be found by filename and line number.
author Kim Alvefur <zash@zash.se>
date Sun, 26 Mar 2023 00:18:05 +0100
parent 12975:d10957394a3c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Matthew Wild <mwild1@gmail.com>
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diff changeset
1 -- Prosody IM
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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!
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5 -- This project is MIT/X11 licensed. Please see the
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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
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10
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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;
7296
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
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 };