| 1 | <?php |
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| 2 | /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */ |
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| 3 | |
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| 4 | /** |
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| 5 | * Storage driver for use against PEAR MDB2 |
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| 6 | * |
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| 7 | * PHP versions 4 and 5 |
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| 8 | * |
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| 9 | * LICENSE: This source file is subject to version 3.01 of the PHP license |
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| 10 | * that is available through the world-wide-web at the following URI: |
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| 11 | * http://www.php.net/license/3_01.txt. If you did not receive a copy of |
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| 12 | * the PHP License and are unable to obtain it through the web, please |
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| 13 | * send a note to [email protected] so we can mail you a copy immediately. |
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| 14 | * |
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| 15 | * @category Authentication |
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| 16 | * @package Auth |
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| 17 | * @author Lorenzo Alberton <[email protected]> |
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| 18 | * @author Adam Ashley <[email protected]> |
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| 19 | * @copyright 2001-2006 The PHP Group |
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| 20 | * @license http://www.php.net/license/3_01.txt PHP License 3.01 |
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| 21 | * @version CVS: $Id: MDB2.php 8713 2006-12-01 05:08:34Z kakinaka $ |
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| 22 | * @link http://pear.php.net/package/Auth |
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| 23 | * @since File available since Release 1.3.0 |
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| 24 | */ |
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| 25 | |
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| 26 | /** |
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| 27 | * Include Auth_Container base class |
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| 28 | */ |
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| 29 | require_once 'Auth/Container.php'; |
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| 30 | /** |
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| 31 | * Include PEAR MDB2 package |
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| 32 | */ |
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| 33 | require_once 'MDB2.php'; |
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| 34 | |
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| 35 | /** |
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| 36 | * Storage driver for fetching login data from a database |
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| 37 | * |
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| 38 | * This storage driver can use all databases which are supported |
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| 39 | * by the PEAR MDB2 abstraction layer to fetch login data. |
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| 40 | * |
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| 41 | * @category Authentication |
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| 42 | * @package Auth |
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| 43 | * @author Lorenzo Alberton <[email protected]> |
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| 44 | * @author Adam Ashley <[email protected]> |
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| 45 | * @copyright 2001-2006 The PHP Group |
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| 46 | * @license http://www.php.net/license/3_01.txt PHP License 3.01 |
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| 47 | * @version Release: 1.4.2 File: $Revision: 8713 $ |
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| 48 | * @link http://pear.php.net/package/Auth |
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| 49 | * @since Class available since Release 1.3.0 |
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| 50 | */ |
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| 51 | class Auth_Container_MDB2 extends Auth_Container |
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| 52 | { |
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| 53 | |
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| 54 | // {{{ properties |
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| 55 | |
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| 56 | /** |
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| 57 | * Additional options for the storage container |
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| 58 | * @var array |
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| 59 | */ |
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| 60 | var $options = array(); |
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| 61 | |
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| 62 | /** |
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| 63 | * MDB object |
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| 64 | * @var object |
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| 65 | */ |
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| 66 | var $db = null; |
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| 67 | var $dsn = ''; |
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| 68 | |
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| 69 | /** |
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| 70 | * User that is currently selected from the DB. |
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| 71 | * @var string |
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| 72 | */ |
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| 73 | var $activeUser = ''; |
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| 74 | |
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| 75 | // }}} |
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| 76 | // {{{ Auth_Container_MDB2() [constructor] |
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| 77 | |
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| 78 | /** |
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| 79 | * Constructor of the container class |
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| 80 | * |
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| 81 | * Initate connection to the database via PEAR::MDB2 |
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| 82 | * |
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| 83 | * @param string Connection data or MDB2 object |
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| 84 | * @return object Returns an error object if something went wrong |
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| 85 | */ |
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| 86 | function Auth_Container_MDB2($dsn) |
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| 87 | { |
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| 88 | $this->_setDefaults(); |
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| 89 | |
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| 90 | if (is_array($dsn)) { |
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| 91 | $this->_parseOptions($dsn); |
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| 92 | if (empty($this->options['dsn'])) { |
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| 93 | PEAR::raiseError('No connection parameters specified!'); |
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| 94 | } |
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| 95 | } else { |
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| 96 | $this->options['dsn'] = $dsn; |
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| 97 | } |
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| 98 | } |
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| 99 | |
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| 100 | // }}} |
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| 101 | // {{{ _connect() |
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| 102 | |
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| 103 | /** |
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| 104 | * Connect to database by using the given DSN string |
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| 105 | * |
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| 106 | * @access private |
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| 107 | * @param mixed DSN string | array | mdb object |
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| 108 | * @return mixed Object on error, otherwise bool |
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| 109 | */ |
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| 110 | function _connect($dsn) |
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| 111 | { |
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| 112 | if (is_string($dsn) || is_array($dsn)) { |
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| 113 | $this->db =& MDB2::connect($dsn, $this->options['db_options']); |
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| 114 | } elseif (is_subclass_of($dsn, 'MDB2_Driver_Common')) { |
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| 115 | $this->db = $dsn; |
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| 116 | } elseif (is_object($dsn) && MDB2::isError($dsn)) { |
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| 117 | return PEAR::raiseError($dsn->getMessage(), $dsn->code); |
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| 118 | } else { |
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| 119 | return PEAR::raiseError('The given dsn was not valid in file ' . __FILE__ . ' at line ' . __LINE__, |
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| 120 | 41, |
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| 121 | PEAR_ERROR_RETURN, |
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| 122 | null, |
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| 123 | null |
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| 124 | ); |
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| 125 | |
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| 126 | } |
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| 127 | |
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| 128 | if (MDB2::isError($this->db) || PEAR::isError($this->db)) { |
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| 129 | return PEAR::raiseError($this->db->getMessage(), $this->db->code); |
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| 130 | } |
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| 131 | |
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| 132 | if ($this->options['auto_quote']) { |
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| 133 | $this->options['final_table'] = $this->db->quoteIdentifier($this->options['table'], true); |
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| 134 | $this->options['final_usernamecol'] = $this->db->quoteIdentifier($this->options['usernamecol'], true); |
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| 135 | $this->options['final_passwordcol'] = $this->db->quoteIdentifier($this->options['passwordcol'], true); |
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| 136 | } else { |
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| 137 | $this->options['final_table'] = $this->options['table']; |
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| 138 | $this->options['final_usernamecol'] = $this->options['usernamecol']; |
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| 139 | $this->options['final_passwordcol'] = $this->options['passwordcol']; |
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| 140 | } |
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| 141 | |
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| 142 | return true; |
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| 143 | } |
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| 144 | |
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| 145 | // }}} |
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| 146 | // {{{ _prepare() |
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| 147 | |
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| 148 | /** |
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| 149 | * Prepare database connection |
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| 150 | * |
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| 151 | * This function checks if we have already opened a connection to |
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| 152 | * the database. If that's not the case, a new connection is opened. |
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| 153 | * |
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| 154 | * @access private |
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| 155 | * @return mixed True or a MDB error object. |
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| 156 | */ |
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| 157 | function _prepare() |
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| 158 | { |
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| 159 | if (is_subclass_of($this->db, 'MDB2_Driver_Common')) { |
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| 160 | return true; |
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| 161 | } |
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| 162 | return $this->_connect($this->options['dsn']); |
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| 163 | } |
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| 164 | |
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| 165 | // }}} |
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| 166 | // {{{ query() |
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| 167 | |
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| 168 | /** |
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| 169 | * Prepare query to the database |
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| 170 | * |
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| 171 | * This function checks if we have already opened a connection to |
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| 172 | * the database. If that's not the case, a new connection is opened. |
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| 173 | * After that the query is passed to the database. |
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| 174 | * |
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| 175 | * @access public |
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| 176 | * @param string Query string |
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| 177 | * @return mixed a MDB_result object or MDB_OK on success, a MDB |
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| 178 | * or PEAR error on failure |
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| 179 | */ |
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| 180 | function query($query) |
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| 181 | { |
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| 182 | $err = $this->_prepare(); |
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| 183 | if ($err !== true) { |
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| 184 | return $err; |
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| 185 | } |
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| 186 | return $this->db->exec($query); |
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| 187 | } |
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| 188 | |
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| 189 | // }}} |
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| 190 | // {{{ _setDefaults() |
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| 191 | |
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| 192 | /** |
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| 193 | * Set some default options |
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| 194 | * |
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| 195 | * @access private |
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| 196 | * @return void |
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| 197 | */ |
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| 198 | function _setDefaults() |
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| 199 | { |
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| 200 | $this->options['table'] = 'auth'; |
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| 201 | $this->options['usernamecol'] = 'username'; |
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| 202 | $this->options['passwordcol'] = 'password'; |
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| 203 | $this->options['dsn'] = ''; |
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| 204 | $this->options['db_fields'] = ''; |
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| 205 | $this->options['cryptType'] = 'md5'; |
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| 206 | $this->options['db_options'] = array(); |
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| 207 | $this->options['auto_quote'] = true; |
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| 208 | } |
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| 209 | |
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| 210 | // }}} |
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| 211 | // {{{ _parseOptions() |
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| 212 | |
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| 213 | /** |
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| 214 | * Parse options passed to the container class |
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| 215 | * |
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| 216 | * @access private |
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| 217 | * @param array |
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| 218 | */ |
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| 219 | function _parseOptions($array) |
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| 220 | { |
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| 221 | foreach ($array as $key => $value) { |
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| 222 | if (isset($this->options[$key])) { |
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| 223 | $this->options[$key] = $value; |
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| 224 | } |
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| 225 | } |
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| 226 | } |
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| 227 | |
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| 228 | // }}} |
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| 229 | // {{{ _quoteDBFields() |
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| 230 | |
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| 231 | /** |
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| 232 | * Quote the db_fields option to avoid the possibility of SQL injection. |
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| 233 | * |
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| 234 | * @access private |
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| 235 | * @return string A properly quoted string that can be concatenated into a |
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| 236 | * SELECT clause. |
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| 237 | */ |
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| 238 | function _quoteDBFields() |
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| 239 | { |
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| 240 | if (isset($this->options['db_fields'])) { |
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| 241 | if (is_array($this->options['db_fields'])) { |
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| 242 | if ($this->options['auto_quote']) { |
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| 243 | $fields = array(); |
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| 244 | foreach ($this->options['db_fields'] as $field) { |
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| 245 | $fields[] = $this->db->quoteIdentifier($field, true); |
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| 246 | } |
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| 247 | return implode(', ', $fields); |
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| 248 | } else { |
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| 249 | return implode(', ', $this->options['db_fields']); |
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| 250 | } |
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| 251 | } else { |
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| 252 | if (strlen($this->options['db_fields']) > 0) { |
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| 253 | if ($this->options['auto_quote']) { |
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| 254 | return $this->db->quoteIdentifier($this->options['db_fields'], true); |
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| 255 | } else { |
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| 256 | return $this->options['db_fields']; |
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| 257 | } |
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| 258 | } |
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| 259 | } |
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| 260 | } |
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| 261 | |
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| 262 | return ''; |
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| 263 | } |
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| 264 | |
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| 265 | // }}} |
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| 266 | // {{{ fetchData() |
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| 267 | |
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| 268 | /** |
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| 269 | * Get user information from database |
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| 270 | * |
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| 271 | * This function uses the given username to fetch |
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| 272 | * the corresponding login data from the database |
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| 273 | * table. If an account that matches the passed username |
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| 274 | * and password is found, the function returns true. |
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| 275 | * Otherwise it returns false. |
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| 276 | * |
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| 277 | * @param string Username |
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| 278 | * @param string Password |
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| 279 | * @param boolean If true password is secured using a md5 hash |
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| 280 | * the frontend and auth are responsible for making sure the container supports |
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| 281 | * challenge response password authentication |
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| 282 | * @return mixed Error object or boolean |
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| 283 | */ |
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| 284 | function fetchData($username, $password, $isChallengeResponse=false) |
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| 285 | { |
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| 286 | // Prepare for a database query |
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| 287 | $err = $this->_prepare(); |
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| 288 | if ($err !== true) { |
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| 289 | return PEAR::raiseError($err->getMessage(), $err->getCode()); |
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| 290 | } |
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| 291 | |
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| 292 | //Check if db_fields contains a *, if so assume all columns are selected |
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| 293 | if (is_string($this->options['db_fields']) |
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| 294 | && strstr($this->options['db_fields'], '*')) { |
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| 295 | $sql_from = '*'; |
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| 296 | } else { |
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| 297 | $sql_from = $this->options['final_usernamecol']. |
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| 298 | ", ".$this->options['final_passwordcol']; |
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| 299 | |
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| 300 | if (strlen($fields = $this->_quoteDBFields()) > 0) { |
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| 301 | $sql_from .= ', '.$fields; |
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| 302 | } |
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| 303 | } |
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| 304 | $query = sprintf("SELECT %s FROM %s WHERE %s = %s", |
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| 305 | $sql_from, |
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| 306 | $this->options['final_table'], |
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| 307 | $this->options['final_usernamecol'], |
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| 308 | $this->db->quote($username, 'text') |
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| 309 | ); |
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| 310 | |
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| 311 | $res = $this->db->queryRow($query, null, MDB2_FETCHMODE_ASSOC); |
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| 312 | if (MDB2::isError($res) || PEAR::isError($res)) { |
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| 313 | return PEAR::raiseError($res->getMessage(), $res->getCode()); |
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| 314 | } |
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| 315 | if (!is_array($res)) { |
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| 316 | $this->activeUser = ''; |
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| 317 | return false; |
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| 318 | } |
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| 319 | |
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| 320 | // Perform trimming here before the hashing |
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| 321 | $password = trim($password, "\r\n"); |
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| 322 | $res[$this->options['passwordcol']] = trim($res[$this->options['passwordcol']], "\r\n"); |
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| 323 | // If using Challenge Response md5 the pass with the secret |
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| 324 | if ($isChallengeResponse) { |
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| 325 | $res[$this->options['passwordcol']] = |
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| 326 | md5($res[$this->options['passwordcol']].$this->_auth_obj->session['loginchallenege']); |
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| 327 | // UGLY cannot avoid without modifying verifyPassword |
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| 328 | if ($this->options['cryptType'] == 'md5') { |
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| 329 | $res[$this->options['passwordcol']] = md5($res[$this->options['passwordcol']]); |
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| 330 | } |
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| 331 | } |
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| 332 | if ($this->verifyPassword($password, |
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| 333 | $res[$this->options['passwordcol']], |
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| 334 | $this->options['cryptType'])) { |
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| 335 | // Store additional field values in the session |
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| 336 | foreach ($res as $key => $value) { |
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| 337 | if ($key == $this->options['passwordcol'] || |
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| 338 | $key == $this->options['usernamecol']) { |
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| 339 | continue; |
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| 340 | } |
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| 341 | // Use reference to the auth object if exists |
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| 342 | // This is because the auth session variable can change so a static call to setAuthData does not make sense |
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| 343 | $this->_auth_obj->setAuthData($key, $value); |
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| 344 | } |
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| 345 | return true; |
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| 346 | } |
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| 347 | |
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| 348 | $this->activeUser = $res[$this->options['usernamecol']]; |
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| 349 | return false; |
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| 350 | } |
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| 351 | |
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| 352 | // }}} |
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| 353 | // {{{ listUsers() |
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| 354 | |
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| 355 | /** |
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| 356 | * Returns a list of users from the container |
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| 357 | * |
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| 358 | * @return mixed array|PEAR_Error |
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| 359 | * @access public |
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| 360 | */ |
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| 361 | function listUsers() |
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| 362 | { |
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| 363 | $err = $this->_prepare(); |
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| 364 | if ($err !== true) { |
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| 365 | return PEAR::raiseError($err->getMessage(), $err->getCode()); |
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| 366 | } |
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| 367 | |
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| 368 | $retVal = array(); |
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| 369 | |
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| 370 | //Check if db_fields contains a *, if so assume all columns are selected |
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| 371 | if ( is_string($this->options['db_fields']) |
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| 372 | && strstr($this->options['db_fields'], '*')) { |
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| 373 | $sql_from = '*'; |
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| 374 | } else { |
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| 375 | $sql_from = $this->options['final_usernamecol']. |
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| 376 | ", ".$this->options['final_passwordcol']; |
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| 377 | |
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| 378 | if (strlen($fields = $this->_quoteDBFields()) > 0) { |
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| 379 | $sql_from .= ', '.$fields; |
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| 380 | } |
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| 381 | } |
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| 382 | |
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| 383 | $query = sprintf('SELECT %s FROM %s', |
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| 384 | $sql_from, |
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| 385 | $this->options['final_table'] |
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| 386 | ); |
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| 387 | |
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| 388 | $res = $this->db->queryAll($query, null, MDB2_FETCHMODE_ASSOC); |
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| 389 | if (MDB2::isError($res)) { |
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| 390 | return PEAR::raiseError($res->getMessage(), $res->getCode()); |
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| 391 | } else { |
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| 392 | foreach ($res as $user) { |
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| 393 | $user['username'] = $user[$this->options['usernamecol']]; |
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| 394 | $retVal[] = $user; |
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| 395 | } |
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| 396 | } |
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| 397 | return $retVal; |
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| 398 | } |
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| 399 | |
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| 400 | // }}} |
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| 401 | // {{{ addUser() |
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| 402 | |
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| 403 | /** |
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| 404 | * Add user to the storage container |
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| 405 | * |
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| 406 | * @access public |
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| 407 | * @param string Username |
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| 408 | * @param string Password |
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| 409 | * @param mixed Additional information that are stored in the DB |
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| 410 | * |
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| 411 | * @return mixed True on success, otherwise error object |
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| 412 | */ |
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| 413 | function addUser($username, $password, $additional = "") |
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| 414 | { |
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| 415 | |
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| 416 | // Prepare for a database query |
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| 417 | $err = $this->_prepare(); |
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| 418 | if ($err !== true) { |
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| 419 | return PEAR::raiseError($err->getMessage(), $err->getCode()); |
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| 420 | } |
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| 421 | |
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| 422 | if (isset($this->options['cryptType']) && $this->options['cryptType'] == 'none') { |
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| 423 | $cryptFunction = 'strval'; |
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| 424 | } elseif (isset($this->options['cryptType']) && function_exists($this->options['cryptType'])) { |
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| 425 | $cryptFunction = $this->options['cryptType']; |
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| 426 | } else { |
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| 427 | $cryptFunction = 'md5'; |
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| 428 | } |
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| 429 | |
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| 430 | $password = $cryptFunction($password); |
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| 431 | |
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| 432 | $additional_key = ''; |
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| 433 | $additional_value = ''; |
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| 434 | |
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| 435 | if (is_array($additional)) { |
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| 436 | foreach ($additional as $key => $value) { |
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| 437 | if ($this->options['auto_quote']) { |
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| 438 | $additional_key .= ', ' . $this->db->quoteIdentifier($key, true); |
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| 439 | } else { |
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| 440 | $additional_key .= ', ' . $key; |
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| 441 | } |
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| 442 | $additional_value .= ', ' . $this->db->quote($value, 'text'); |
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| 443 | } |
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| 444 | } |
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| 445 | |
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| 446 | $query = sprintf("INSERT INTO %s (%s, %s%s) VALUES (%s, %s%s)", |
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| 447 | $this->options['final_table'], |
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| 448 | $this->options['final_usernamecol'], |
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| 449 | $this->options['final_passwordcol'], |
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| 450 | $additional_key, |
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| 451 | $this->db->quote($username, 'text'), |
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| 452 | $this->db->quote($password, 'text'), |
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| 453 | $additional_value |
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| 454 | ); |
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| 455 | |
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| 456 | $res = $this->query($query); |
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| 457 | |
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| 458 | if (MDB2::isError($res)) { |
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| 459 | return PEAR::raiseError($res->getMessage(), $res->code); |
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| 460 | } |
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| 461 | return true; |
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| 462 | } |
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| 463 | |
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| 464 | // }}} |
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| 465 | // {{{ removeUser() |
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| 466 | |
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| 467 | /** |
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| 468 | * Remove user from the storage container |
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| 469 | * |
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| 470 | * @access public |
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| 471 | * @param string Username |
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| 472 | * |
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| 473 | * @return mixed True on success, otherwise error object |
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| 474 | */ |
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| 475 | function removeUser($username) |
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| 476 | { |
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| 477 | // Prepare for a database query |
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| 478 | $err = $this->_prepare(); |
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| 479 | if ($err !== true) { |
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| 480 | return PEAR::raiseError($err->getMessage(), $err->getCode()); |
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| 481 | } |
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| 482 | |
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| 483 | $query = sprintf("DELETE FROM %s WHERE %s = %s", |
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| 484 | $this->options['final_table'], |
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| 485 | $this->options['final_usernamecol'], |
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| 486 | $this->db->quote($username, 'text') |
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| 487 | ); |
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| 488 | |
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| 489 | $res = $this->query($query); |
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| 490 | |
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| 491 | if (MDB2::isError($res)) { |
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| 492 | return PEAR::raiseError($res->getMessage(), $res->code); |
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| 493 | } |
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| 494 | return true; |
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| 495 | } |
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| 496 | |
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| 497 | // }}} |
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| 498 | // {{{ changePassword() |
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| 499 | |
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| 500 | /** |
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| 501 | * Change password for user in the storage container |
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| 502 | * |
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| 503 | * @param string Username |
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| 504 | * @param string The new password (plain text) |
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| 505 | */ |
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| 506 | function changePassword($username, $password) |
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| 507 | { |
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| 508 | // Prepare for a database query |
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| 509 | $err = $this->_prepare(); |
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| 510 | if ($err !== true) { |
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| 511 | return PEAR::raiseError($err->getMessage(), $err->getCode()); |
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| 512 | } |
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| 513 | |
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| 514 | if (isset($this->options['cryptType']) && $this->options['cryptType'] == 'none') { |
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| 515 | $cryptFunction = 'strval'; |
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| 516 | } elseif (isset($this->options['cryptType']) && function_exists($this->options['cryptType'])) { |
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| 517 | $cryptFunction = $this->options['cryptType']; |
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| 518 | } else { |
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| 519 | $cryptFunction = 'md5'; |
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| 520 | } |
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| 521 | |
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| 522 | $password = $cryptFunction($password); |
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| 523 | |
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| 524 | $query = sprintf("UPDATE %s SET %s = %s WHERE %s = %s", |
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| 525 | $this->options['final_table'], |
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| 526 | $this->options['final_passwordcol'], |
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| 527 | $this->db->quote($password, 'text'), |
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| 528 | $this->options['final_usernamecol'], |
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| 529 | $this->db->quote($username, 'text') |
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| 530 | ); |
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| 531 | |
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| 532 | $res = $this->query($query); |
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| 533 | |
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| 534 | if (MDB2::isError($res)) { |
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| 535 | return PEAR::raiseError($res->getMessage(), $res->code); |
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| 536 | } |
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| 537 | return true; |
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| 538 | } |
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| 539 | |
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| 540 | // }}} |
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| 541 | // {{{ supportsChallengeResponse() |
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| 542 | |
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| 543 | /** |
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| 544 | * Determine if this container supports |
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| 545 | * password authentication with challenge response |
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| 546 | * |
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| 547 | * @return bool |
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| 548 | * @access public |
|---|
| 549 | */ |
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| 550 | function supportsChallengeResponse() |
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| 551 | { |
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| 552 | return in_array($this->options['cryptType'], array('md5', 'none', '')); |
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| 553 | } |
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| 554 | |
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| 555 | // }}} |
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| 556 | // {{{ getCryptType() |
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| 557 | |
|---|
| 558 | /** |
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| 559 | * Returns the selected crypt type for this container |
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| 560 | * |
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| 561 | * @return string Function used to crypt the password |
|---|
| 562 | */ |
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| 563 | function getCryptType() |
|---|
| 564 | { |
|---|
| 565 | return $this->options['cryptType']; |
|---|
| 566 | } |
|---|
| 567 | |
|---|
| 568 | // }}} |
|---|
| 569 | |
|---|
| 570 | } |
|---|
| 571 | ?> |
|---|