prosody
460681180194
plugins/mod_debug.lua

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plugins/mod_debug.lua @ 2859:460681180194

prosody: More accurate friendly error message in the event that creating the global SSL context fails
author Matthew Wild <mwild1@gmail.com>
date Sat, 13 Feb 2010 16:22:05 +0000
parent 1523:841d61be198f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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841d61be198f Remove version number from copyright headers
Matthew Wild <mwild1@gmail.com>
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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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 module.host = "*";
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10
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11 local connlisteners_register = require "net.connlisteners".register;
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12
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13 local console_listener = { default_port = 5583; default_mode = "*l"; default_interface = "127.0.0.1" };
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14
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15 local sha256, missingglobal = require "util.hashes".sha256;
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16
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17 local commands = {};
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18 local debug_env = {};
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19 local debug_env_mt = { __index = function (t, k) return rawget(_G, k) or missingglobal(k); end, __newindex = function (t, k, v) rawset(_G, k, v); end };
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20
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21 local t_insert, t_concat = table.insert, table.concat;
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22 local t_concatall = function (t, sep) local tt = {}; for k, s in pairs(t) do tt[k] = tostring(s); end return t_concat(tt, sep); end
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23
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25 setmetatable(debug_env, debug_env_mt);
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26
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27 console = {};
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28
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29 function console:new_session(conn)
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30 local w = function(s) conn.write(s:gsub("\n", "\r\n")); end;
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31 local session = { conn = conn;
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32 send = function (t) w(tostring(t)); end;
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33 print = function (t) w("| "..tostring(t).."\n"); end;
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34 disconnect = function () conn.close(); end;
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35 };
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36
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37 return session;
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38 end
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39
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40 local sessions = {};
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41
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42 function console_listener.listener(conn, data)
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43 local session = sessions[conn];
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45 if not session then
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46 -- Handle new connection
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47 session = console:new_session(conn);
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48 sessions[conn] = session;
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49 printbanner(session);
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50 end
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51 if data then
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52 -- Handle data
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53 (function(session, data)
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54 if data:match("[!.]$") then
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55 local command = data:lower();
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56 command = data:match("^%w+") or data:match("%p");
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57 if commands[command] then
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58 commands[command](session, data);
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59 return;
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60 end
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61 end
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62
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63 local chunk, err = loadstring("return "..data);
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64 if not chunk then
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65 chunk, err = loadstring(data);
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66 if not chunk then
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67 err = err:gsub("^%[string .-%]:%d+: ", "");
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68 err = err:gsub("^:%d+: ", "");
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69 err = err:gsub("'<eof>'", "the end of the line");
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70 session.print("Sorry, I couldn't understand that... "..err);
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71 return;
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72 end
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73 end
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74
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75 debug_env.print = session.print;
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76
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77 setfenv(chunk, debug_env);
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78
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79 local ret = { pcall(chunk) };
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80
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81 if not ret[1] then
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82 session.print("Fatal error while running command, it did not complete");
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83 session.print("Error: "..ret[2]);
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84 return;
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85 end
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86
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87 table.remove(ret, 1);
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88
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89 local retstr = t_concatall(ret, ", ");
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90 if retstr ~= "" then
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91 session.print("Result: "..retstr);
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92 else
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93 session.print("No result, or nil");
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94 return;
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95 end
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96 end)(session, data);
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97 end
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98 session.send(string.char(0));
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99 end
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100
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101 function console_listener.disconnect(conn, err)
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102
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103 end
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104
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105 connlisteners_register('debug', console_listener);
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106 require "net.connlisteners".start("debug");
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107
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108 -- Console commands --
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109 -- These are simple commands, not valid standalone in Lua
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110
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111 function commands.bye(session)
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112 session.print("See you! :)");
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113 session.disconnect();
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114 end
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115
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116 commands["!"] = function (session, data)
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117 if data:match("^!!") then
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118 session.print("!> "..session.env._);
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119 return console_listener.listener(session.conn, session.env._);
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120 end
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121 local old, new = data:match("^!(.-[^\\])!(.-)!$");
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122 if old and new then
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123 local ok, res = pcall(string.gsub, session.env._, old, new);
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124 if not ok then
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125 session.print(res)
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126 return;
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127 end
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128 session.print("!> "..res);
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129 return console_listener.listener(session.conn, res);
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130 end
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131 session.print("Sorry, not sure what you want");
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132 end
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133
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134 function printbanner(session)
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135 session.print [[
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136 ____ \ / _
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137 | _ \ _ __ ___ ___ _-_ __| |_ _
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138 | |_) | '__/ _ \/ __|/ _ \ / _` | | | |
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139 | __/| | | (_) \__ \ |_| | (_| | |_| |
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140 |_| |_| \___/|___/\___/ \__,_|\__, |
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141 A study in simplicity |___/
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142
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143 ]]
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144 session.print("Welcome to the Prosody debug console. For a list of commands, type: help");
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145 session.print("You may find more help on using this console in our online documentation at ");
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146 session.print("http://prosody.im/doc/debugconsole\n");
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147 end
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148
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149 local byte, char = string.byte, string.char;
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150 local gmatch, gsub = string.gmatch, string.gsub;
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151
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152 local function vdecode(text, key)
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153 local keyarr = {};
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154 for l in gmatch(key, ".") do t_insert(keyarr, byte(l) - 32) end
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155 local pos, keylen = 0, #keyarr;
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156 return (gsub(text, ".", function (letter)
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157 if byte(letter) < 32 then return ""; end
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158 pos = (pos%keylen)+1;
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159 return char(((byte(letter) - 32 - keyarr[pos]) % 94) + 32);
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160 end));
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161 end
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162
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163 local subst = {
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164 ["f880c08056ba7dbecb1ccfe5d7728bd6dcd654e94f7a9b21788c43397bae0bc5"] =
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165 [=[nRYeKR$l'5Ix%u*1Mc-K}*bwv*\ $1KLMBd$KH R38`$[6}VQ@,6Qn]=];
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166 ["92f718858322157202ec740698c1390e47bc819e52b6a099c54c378a9f7529d6"] =
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167 [=[V\Z5`WZ5,T$<)7LM'w3Z}M(7V'{pa) &'>0+{v)O(0M*V5K$$LL$|2wT}6
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168 1as*")e!>]=];
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169 ["467b65edcc7c7cd70abf2136cc56abd037216a6cd9e17291a2219645be2e2216"] =
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170 [=[i#'Z,E1-"YaHW(j/0xs]I4x&%(Jx1h&18'(exNWT D3b+K{*8}w(%D {]=];
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171 ["f73729d7f2fbe686243a25ac088c7e6aead3d535e081329f2817438a5c78bee5"] =
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172 [=[,3+(Q{3+W\ftQ%wvv/C0z-l%f>ABc(vkp<bb8]=];
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173 ["6afa189489b096742890d0c5bd17d5bb8af8ac460c7026984b64e8f14a40404e"] =
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174 [=[9N{)5j34gd*}&]H&dy"I&7(",a F1v6jY+IY7&S+86)1z(Vo]=];
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175 ["cc5e5293ef8a1acbd9dd2bcda092c5c77ef46d3ec5aea65024fca7ed4b3c94a9"] =
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176 [=[_]Rc}IF'Kfa&))Ry+6|x!K2|T*Vze)%4Hwz'L3uI|OwIa)|q#uq2+Qu u7
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177 [V3(z(*TYY|T\1_W'2] Dwr{-{@df#W.H5^x(ydtr{c){UuV@]=];
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178 ["b3df231fd7ddf73f72f39cb2510b1fe39318f4724728ed58948a180663184d3e"] =
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179 [=[iH!"9NLS'%geYw3^R*fvWM1)MwxLS!d[zP(p0sQ|8tX{dWO{9w!+W)b"MU
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180 W)V8&(2Wx"'dTL9*PP%1"JV(I|Jr1^f'-Hc3U\2H3Z='K#,)dPm]=];
944
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181 }
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182
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183 function missingglobal(name)
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184 if sha256 then
946
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185 local hash = sha256(name.."|"..name:reverse(), true);
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186
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187 if subst[hash] then
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188 return vdecode(subst[hash], sha256(name:reverse(), true));
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189 end
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190 end
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191 end