prosody-modules
8064b5e346ab
mod_auth_joomla/mod_auth_joomla.lua

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mod_auth_joomla/mod_auth_joomla.lua @ 1893:8064b5e346ab

mod_pubsub_feeds/README: Update wording to be clearer
author Kim Alvefur <zash@zash.se>
date Sat, 03 Oct 2015 16:53:45 +0200
parent 1343:7dbde05b48a9
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 = {};
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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:provides("auth", provider);
422
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182