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mod_auth_phpbb3/mod_auth_phpbb3.lua @ 1073:fe57e9332e52
mod_statistics/top.lua: Fix session sorting function (seems it must always return false when a==b)
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 15 Jun 2013 20:16:58 +0100 |
parent | 814:881ec9919144 |
child | 1343:7dbde05b48a9 |
rev | line source |
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373
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1 -- phpbb3 authentication backend for Prosody |
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2 -- |
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3 -- Copyright (C) 2011 Waqas Hussain |
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4 -- |
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5 |
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6 local log = require "util.logger".init("auth_sql"); |
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7 local new_sasl = require "util.sasl".new; |
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8 local nodeprep = require "util.encodings".stringprep.nodeprep; |
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9 local saslprep = require "util.encodings".stringprep.saslprep; |
373
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10 local DBI = require "DBI" |
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11 local md5 = require "util.hashes".md5; |
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12 local uuid_gen = require "util.uuid".generate; |
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13 |
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14 local connection; |
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15 local params = module:get_option("sql"); |
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16 |
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17 local resolve_relative_path = require "core.configmanager".resolve_relative_path; |
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18 |
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19 local function test_connection() |
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20 if not connection then return nil; end |
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21 if connection:ping() then |
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22 return true; |
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23 else |
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24 module:log("debug", "Database connection closed"); |
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25 connection = nil; |
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26 end |
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27 end |
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28 local function connect() |
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29 if not test_connection() then |
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30 prosody.unlock_globals(); |
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31 local dbh, err = DBI.Connect( |
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32 params.driver, params.database, |
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33 params.username, params.password, |
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34 params.host, params.port |
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35 ); |
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36 prosody.lock_globals(); |
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37 if not dbh then |
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38 module:log("debug", "Database connection failed: %s", tostring(err)); |
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39 return nil, err; |
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40 end |
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41 module:log("debug", "Successfully connected to database"); |
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42 dbh:autocommit(true); -- don't run in transaction |
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43 connection = dbh; |
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44 return connection; |
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45 end |
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46 end |
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47 |
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48 do -- process options to get a db connection |
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49 params = params or { driver = "SQLite3" }; |
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50 |
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51 if params.driver == "SQLite3" then |
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52 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite"); |
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53 end |
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54 |
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55 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified"); |
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56 |
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57 assert(connect()); |
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58 end |
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59 |
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60 local function getsql(sql, ...) |
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61 if params.driver == "PostgreSQL" then |
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62 sql = sql:gsub("`", "\""); |
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63 end |
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64 if not test_connection() then connect(); end |
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65 -- do prepared statement stuff |
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66 local stmt, err = connection:prepare(sql); |
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67 if not stmt and not test_connection() then error("connection failed"); end |
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68 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end |
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69 -- run query |
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70 local ok, err = stmt:execute(...); |
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71 if not ok and not test_connection() then error("connection failed"); end |
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72 if not ok then return nil, err; end |
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73 |
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74 return stmt; |
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75 end |
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76 local function setsql(sql, ...) |
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77 local stmt, err = getsql(sql, ...); |
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78 if not stmt then return stmt, err; end |
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79 return stmt:affected(); |
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80 end |
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81 |
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82 local function get_password(username) |
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83 local stmt, err = getsql("SELECT `user_password` FROM `phpbb_users` WHERE `username_clean`=?", username); |
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84 if stmt then |
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85 for row in stmt:rows(true) do |
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86 return row.user_password; |
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87 end |
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88 end |
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89 end |
665
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90 local function check_sessionids(username, session_id) |
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91 -- TODO add session expiration and auto-login check |
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92 local stmt, err = getsql("SELECT phpbb_sessions.session_id FROM phpbb_sessions INNER JOIN phpbb_users ON phpbb_users.user_id = phpbb_sessions.session_user_id WHERE phpbb_users.username_clean =?", username); |
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93 if stmt then |
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94 for row in stmt:rows(true) do |
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95 -- if row.session_id == session_id then return true; end |
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96 |
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97 -- workaround for possible LuaDBI bug |
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98 -- The session_id returned by the sql statement has an additional zero at the end. But that is not in the database. |
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99 if row.session_id == session_id or row.session_id == session_id.."0" then return true; end |
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100 end |
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101 end |
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102 end |
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103 |
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104 |
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105 local itoa64 = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
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106 local function hashEncode64(input, count) |
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107 local output = ""; |
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108 local i, value = 0, 0; |
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109 |
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110 while true do |
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111 value = input:byte(i+1) |
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112 i = i+1; |
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113 local idx = value % 0x40 + 1; |
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114 output = output .. itoa64:sub(idx, idx); |
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115 |
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116 if i < count then |
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117 value = value + input:byte(i+1) * 256; |
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118 end |
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119 local _ = value % (2^6); |
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120 local idx = ((value - _) / (2^6)) % 0x40 + 1 |
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121 output = output .. itoa64:sub(idx, idx); |
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122 |
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123 if i >= count then break; end |
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124 i = i+1; |
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125 |
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126 if i < count then |
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127 value = value + input:byte(i+1) * 256 * 256; |
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128 end |
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129 local _ = value % (2^12); |
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130 local idx = ((value - _) / (2^12)) % 0x40 + 1 |
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131 output = output .. itoa64:sub(idx, idx); |
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132 |
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133 if i >= count then break; end |
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134 i = i+1; |
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135 |
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136 local _ = value % (2^18); |
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137 local idx = ((value - _) / (2^18)) % 0x40 + 1 |
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138 output = output .. itoa64:sub(idx, idx); |
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139 |
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140 if not(i < count) then break; end |
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141 end |
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142 return output; |
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143 end |
377
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144 local function hashCryptPrivate(password, genSalt) |
373
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145 local output = "*"; |
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146 if not genSalt:match("^%$H%$") then return output; end |
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147 |
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148 local count_log2 = itoa64:find(genSalt:sub(4,4)) - 1; |
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149 if count_log2 < 7 or count_log2 > 30 then return output; end |
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150 |
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151 local count = 2 ^ count_log2; |
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152 local salt = genSalt:sub(5, 12); |
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153 |
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154 if #salt ~= 8 then return output; end |
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155 |
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156 local hash = md5(salt..password); |
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157 |
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158 while true do |
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159 hash = md5(hash..password); |
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160 if not(count > 1) then break; end |
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161 count = count-1; |
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162 end |
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163 |
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164 output = genSalt:sub(1, 12); |
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165 output = output .. hashEncode64(hash, 16); |
373
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166 |
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167 return output; |
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168 end |
377
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169 local function hashGensaltPrivate(input) |
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170 local iteration_count_log2 = 6; |
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171 local output = "$H$"; |
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172 local idx = math.min(iteration_count_log2 + 5, 30) + 1; |
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173 output = output .. itoa64:sub(idx, idx); |
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174 output = output .. hashEncode64(input, 6); |
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175 return output; |
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176 end |
373
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177 local function phpbbCheckHash(password, hash) |
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178 if #hash == 32 then return hash == md5(password, true); end -- legacy PHPBB2 hash |
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179 return #hash == 34 and hashCryptPrivate(password, hash) == hash; |
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180 end |
421
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181 local function phpbbCreateHash(password) |
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182 local random = uuid_gen():sub(-6); |
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183 local salt = hashGensaltPrivate(random); |
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184 local hash = hashCryptPrivate(password, salt); |
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185 if #hash == 34 then return hash; end |
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186 return md5(password, true); |
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187 end |
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188 |
373
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189 |
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190 provider = {}; |
373
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191 |
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192 function provider.test_password(username, password) |
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193 local hash = get_password(username); |
375
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194 return hash and phpbbCheckHash(password, hash); |
373
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195 end |
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196 function provider.user_exists(username) |
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197 module:log("debug", "test user %s existence", username); |
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198 return get_password(username) and true; |
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199 end |
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200 |
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201 function provider.get_password(username) |
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202 return nil, "Getting password is not supported."; |
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203 end |
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204 function provider.set_password(username, password) |
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205 local hash = phpbbCreateHash(password); |
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206 local stmt, err = setsql("UPDATE `phpbb_users` SET `user_password`=? WHERE `username_clean`=?", hash, username); |
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207 return stmt and true, err; |
373
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208 end |
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209 function provider.create_user(username, password) |
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210 return nil, "Account creation/modification not supported."; |
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211 end |
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212 |
419
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213 local escapes = { |
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214 [" "] = "\\20"; |
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215 ['"'] = "\\22"; |
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216 ["&"] = "\\26"; |
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217 ["'"] = "\\27"; |
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218 ["/"] = "\\2f"; |
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219 [":"] = "\\3a"; |
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220 ["<"] = "\\3c"; |
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221 [">"] = "\\3e"; |
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222 ["@"] = "\\40"; |
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223 ["\\"] = "\\5c"; |
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224 }; |
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225 local unescapes = {}; |
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226 for k,v in pairs(escapes) do unescapes[v] = k; end |
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227 local function jid_escape(s) return s and (s:gsub(".", escapes)); end |
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228 local function jid_unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end |
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229 |
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230 function provider.get_sasl_handler() |
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231 local sasl = {}; |
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232 function sasl:clean_clone() return provider.get_sasl_handler(); end |
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233 function sasl:mechanisms() return { PLAIN = true; }; end |
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234 function sasl:select(mechanism) |
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235 if not self.selected and mechanism == "PLAIN" then |
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236 self.selected = mechanism; |
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237 return true; |
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238 end |
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239 end |
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240 function sasl:process(message) |
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241 if not message then return "failure", "malformed-request"; end |
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242 local authorization, authentication, password = message:match("^([^%z]*)%z([^%z]+)%z([^%z]+)"); |
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243 if not authorization then return "failure", "malformed-request"; end |
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244 authentication = saslprep(authentication); |
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245 password = saslprep(password); |
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246 if (not password) or (password == "") or (not authentication) or (authentication == "") then |
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247 return "failure", "malformed-request", "Invalid username or password."; |
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248 end |
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249 local function test(authentication) |
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250 local prepped = nodeprep(authentication); |
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251 local normalized = jid_unescape(prepped); |
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252 return normalized and provider.test_password(normalized, password) and prepped; |
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253 end |
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254 local username = test(authentication) or test(jid_escape(authentication)); |
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255 if not username and params.sessionid_as_password then |
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256 local function test(authentication) |
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257 local prepped = nodeprep(authentication); |
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258 local normalized = jid_unescape(prepped); |
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259 return normalized and check_sessionids(normalized, password) and prepped; |
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260 end |
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261 username = test(authentication) or test(jid_escape(authentication)); |
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262 end |
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263 if username then |
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264 self.username = username; |
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265 return "success"; |
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266 end |
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267 return "failure", "not-authorized", "Unable to authorize you with the authentication credentials you've sent."; |
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268 end |
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269 return sasl; |
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270 end |
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271 |
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272 module:provides("auth", provider); |
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273 |