prosody
89fa66d4e502
util/jid.lua

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util/jid.lua @ 7153:89fa66d4e502

mod_storage_sql: Implement map:set_keys, allowing multiple keys to be set in the same transaction
author Kim Alvefur <zash@zash.se>
date Tue, 09 Feb 2016 16:56:27 +0100
parent 6891:7f76c77ddcb8
child 7296:1859e07ae082
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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 match, sub = string.match, string.sub;
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12 local nodeprep = require "util.encodings".stringprep.nodeprep;
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13 local nameprep = require "util.encodings".stringprep.nameprep;
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14 local resourceprep = require "util.encodings".stringprep.resourceprep;
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15
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16 local escapes = {
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17 [" "] = "\\20"; ['"'] = "\\22";
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18 ["&"] = "\\26"; ["'"] = "\\27";
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19 ["/"] = "\\2f"; [":"] = "\\3a";
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20 ["<"] = "\\3c"; [">"] = "\\3e";
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21 ["@"] = "\\40"; ["\\"] = "\\5c";
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22 };
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23 local unescapes = {};
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24 for k,v in pairs(escapes) do unescapes[v] = k; end
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26 local _ENV = nil;
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28 local function split(jid)
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29 if not jid then return; end
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30 local node, nodepos = match(jid, "^([^@/]+)@()");
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31 local host, hostpos = match(jid, "^([^@/]+)()", nodepos)
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32 if node and not host then return nil, nil, nil; end
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33 local resource = match(jid, "^/(.+)$", hostpos);
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34 if (not host) or ((not resource) and #jid >= hostpos) then return nil, nil, nil; end
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35 return node, host, resource;
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36 end
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38 local function bare(jid)
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39 local node, host = split(jid);
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40 if node and host then
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41 return node.."@"..host;
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42 end
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43 return host;
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44 end
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45
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46 local function prepped_split(jid)
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47 local node, host, resource = split(jid);
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48 if host then
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49 if sub(host, -1, -1) == "." then -- Strip empty root label
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50 host = sub(host, 1, -2);
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51 end
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52 host = nameprep(host);
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53 if not host then return; end
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54 if node then
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55 node = nodeprep(node);
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56 if not node then return; end
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57 end
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58 if resource then
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59 resource = resourceprep(resource);
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60 if not resource then return; end
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61 end
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62 return node, host, resource;
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63 end
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64 end
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65
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66 local function join(node, host, resource)
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67 if not host then return end
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68 if node and resource then
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69 return node.."@"..host.."/"..resource;
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70 elseif node then
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71 return node.."@"..host;
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72 elseif resource then
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73 return host.."/"..resource;
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74 end
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75 return host;
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76 end
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77
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78 local function prep(jid)
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79 local node, host, resource = prepped_split(jid);
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80 return join(node, host, resource);
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81 end
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82
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83 local function compare(jid, acl)
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84 -- compare jid to single acl rule
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85 -- TODO compare to table of rules?
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86 local jid_node, jid_host, jid_resource = split(jid);
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87 local acl_node, acl_host, acl_resource = split(acl);
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88 if ((acl_node ~= nil and acl_node == jid_node) or acl_node == nil) and
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89 ((acl_host ~= nil and acl_host == jid_host) or acl_host == nil) and
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90 ((acl_resource ~= nil and acl_resource == jid_resource) or acl_resource == nil) then
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91 return true
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92 end
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93 return false
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94 end
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95
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96 local function escape(s) return s and (s:gsub(".", escapes)); end
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97 local function unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end
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98
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99 return {
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100 split = split;
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101 bare = bare;
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102 prepped_split = prepped_split;
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103 join = join;
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104 prep = prep;
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105 compare = compare;
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106 escape = escape;
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107 unescape = unescape;
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108 };