prosody-modules
c1b0f0c33c6a
mod_auth_joomla/mod_auth_joomla.lua

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mod_auth_joomla/mod_auth_joomla.lua @ 735:c1b0f0c33c6a

mod_archive: Fix hour offset in stored message date os.date expect a timestamp in local time, that is subject to daylight saving. But since we pass an UTC timestamp to os.date one hour is (wrongly) added in the summer. The only sensible thing is to call the os.date only once with the ! parametter. And then parsing this sting to get the utc_timestamp. Calling os.date with an UTC timestamp is not possible, and calling os.date twice without timestamp could give different results.
author Olivier Goffart <ogoffart@woboq.com>
date Wed, 04 Jul 2012 13:49:57 +0200
parent 720:97f6d7c4aaed
child 814:881ec9919144
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Joomla 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 new_sasl = require "util.sasl".new;
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7 local nodeprep = require "util.encodings".stringprep.nodeprep;
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8 local saslprep = require "util.encodings".stringprep.saslprep;
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9 local DBI = require "DBI"
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10 local md5 = require "util.hashes".md5;
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11 local uuid_gen = require "util.uuid".generate;
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12
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13 local connection;
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14 local params = module:get_option("sql");
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15 local prefix = params and params.prefix or "jos_";
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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 `password` FROM `"..prefix.."users` WHERE `username`=?", 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.password;
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87 end
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88 end
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89 end
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90
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91
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92 local function getCryptedPassword(plaintext, salt)
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93 local salted = plaintext..salt;
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94 return md5(salted, true);
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95 end
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96 local function joomlaCheckHash(password, hash)
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97 local crypt, salt = hash:match("^([^:]*):(.*)$");
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98 return (crypt or hash) == getCryptedPassword(password, salt or '');
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99 end
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100 local function joomlaCreateHash(password)
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101 local salt = uuid_gen():gsub("%-", "");
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102 local crypt = getCryptedPassword(password, salt);
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103 return crypt..':'..salt;
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104 end
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105
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106
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107 provider = { name = "joomla" };
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108
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109 function provider.test_password(username, password)
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110 local hash = get_password(username);
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111 return hash and joomlaCheckHash(password, hash);
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112 end
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113 function provider.user_exists(username)
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114 module:log("debug", "test user %s existence", username);
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115 return get_password(username) and true;
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116 end
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117
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118 function provider.get_password(username)
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119 return nil, "Getting password is not supported.";
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120 end
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121 function provider.set_password(username, password)
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122 local hash = joomlaCreateHash(password);
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123 local stmt, err = setsql("UPDATE `"..prefix.."users` SET `password`=? WHERE `username`=?", hash, username);
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124 return stmt and true, err;
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125 end
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126 function provider.create_user(username, password)
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127 return nil, "Account creation/modification not supported.";
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128 end
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129
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130 local escapes = {
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131 [" "] = "\\20";
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132 ['"'] = "\\22";
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133 ["&"] = "\\26";
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134 ["'"] = "\\27";
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135 ["/"] = "\\2f";
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136 [":"] = "\\3a";
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137 ["<"] = "\\3c";
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138 [">"] = "\\3e";
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139 ["@"] = "\\40";
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140 ["\\"] = "\\5c";
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141 };
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142 local unescapes = {};
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143 for k,v in pairs(escapes) do unescapes[v] = k; end
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144 local function jid_escape(s) return s and (s:gsub(".", escapes)); end
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145 local function jid_unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end
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146
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147 function provider.get_sasl_handler()
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148 local sasl = {};
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149 function sasl:clean_clone() return provider.get_sasl_handler(); end
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150 function sasl:mechanisms() return { PLAIN = true; }; end
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151 function sasl:select(mechanism)
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152 if not self.selected and mechanism == "PLAIN" then
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153 self.selected = mechanism;
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154 return true;
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155 end
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156 end
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157 function sasl:process(message)
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158 if not message then return "failure", "malformed-request"; end
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159 local authorization, authentication, password = message:match("^([^%z]*)%z([^%z]+)%z([^%z]+)");
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160 if not authorization then return "failure", "malformed-request"; end
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161 authentication = saslprep(authentication);
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162 password = saslprep(password);
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163 if (not password) or (password == "") or (not authentication) or (authentication == "") then
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164 return "failure", "malformed-request", "Invalid username or password.";
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165 end
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166 local function test(authentication)
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167 local prepped = nodeprep(authentication);
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168 local normalized = jid_unescape(prepped);
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169 return normalized and provider.test_password(normalized, password) and prepped;
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170 end
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171 local username = test(authentication) or test(jid_escape(authentication));
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172 if username then
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173 self.username = username;
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174 return "success";
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175 end
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176 return "failure", "not-authorized", "Unable to authorize you with the authentication credentials you've sent.";
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177 end
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178 return sasl;
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179 end
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180
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181 module:add_item("auth-provider", provider);
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182