prosody
afef1e170de7
util/jid.lua

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util/jid.lua @ 11893:afef1e170de7

util.human.io: Support specifying column defaults in tables
author Kim Alvefur <zash@zash.se>
date Fri, 12 Nov 2021 11:44:31 +0100
parent 11056:0b0a42542456
child 12190:3616128cd2e3
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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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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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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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 "util.encodings".stringprep.nodeprep;
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14 local nameprep = require "util.encodings".stringprep.nameprep;
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15 local resourceprep = require "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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30
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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 not jid 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 if node and not host then return nil, nil, nil; end
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39 local resource = match(jid, "^/(.+)$", hostpos);
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40 if (not host) or ((not resource) and #jid >= hostpos) then return nil, nil, nil; end
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41 return node, host, resource;
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42 end
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43
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44 local function bare(jid)
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45 local node, host = split(jid);
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46 if node and host then
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47 return node.."@"..host;
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48 end
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49 return host;
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50 end
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51
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52 local function prepped_split(jid, strict)
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53 local node, host, resource = split(jid);
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54 if host and host ~= "." then
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55 if sub(host, -1, -1) == "." then -- Strip empty root label
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56 host = sub(host, 1, -2);
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57 end
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58 host = nameprep(host, strict);
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59 if not host then return; end
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60 if node then
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61 node = nodeprep(node, strict);
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62 if not node then return; end
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63 end
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64 if resource then
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65 resource = resourceprep(resource, strict);
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66 if not resource then return; end
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67 end
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68 return node, host, resource;
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69 end
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70 end
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71
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72 local function join(node, host, resource)
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73 if not host then return end
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74 if node and resource then
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75 return node.."@"..host.."/"..resource;
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76 elseif node then
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77 return node.."@"..host;
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78 elseif resource then
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79 return host.."/"..resource;
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80 end
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81 return host;
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82 end
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83
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84 local function prep(jid, strict)
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85 local node, host, resource = prepped_split(jid, strict);
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86 return join(node, host, resource);
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87 end
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88
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89 local function compare(jid, acl)
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90 -- compare jid to single acl rule
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91 -- TODO compare to table of rules?
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92 local jid_node, jid_host, jid_resource = split(jid);
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93 local acl_node, acl_host, acl_resource = split(acl);
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94 if ((acl_node ~= nil and acl_node == jid_node) or acl_node == nil) and
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95 ((acl_host ~= nil and acl_host == jid_host) or acl_host == nil) and
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96 ((acl_resource ~= nil and acl_resource == jid_resource) or acl_resource == nil) then
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97 return true
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98 end
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99 return false
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100 end
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101
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102 local function node(jid)
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103 return (select(1, split(jid)));
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104 end
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105
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106 local function host(jid)
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107 return (select(2, split(jid)));
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108 end
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109
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110 local function resource(jid)
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111 return (select(3, split(jid)));
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112 end
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113
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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 };