prosody
113f3912c7cb
util/jid.lua

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util/jid.lua @ 11432:113f3912c7cb

util: Add Teal interface definition files Enables writing code in Teal that is aware of the interfaces and function prototypes in these other utils. Could also be used to do type checks on Lua sources, but this tends to have a lot of noise.
author Kim Alvefur <zash@zash.se>
date Tue, 09 Mar 2021 14:36:46 +0100
parent 11056:0b0a42542456
child 12190:3616128cd2e3
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rev   line source
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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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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;
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 };