user_password.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * displays and handles the form where the user can change his password
   5  * linked from index.php
   6  *
   7  * @package PhpMyAdmin
   8  */
   9
  10 /**
  11  * Gets some core libraries
  12  */
  13 require_once './libraries/common.inc.php';
  14
  15 /**
  16  * Libraries needed for some functions
  17  */
  18 require_once './libraries/server_privileges.lib.php';
  19
  20 $response = PMA_Response::getInstance();
  21 $header   = $response->getHeader();
  22 $scripts  = $header->getScripts();
  23 $scripts->addFile('server_privileges.js');
  24
  25 /**
  26  * Displays an error message and exits if the user isn't allowed to use this
  27  * script
  28  */
  29 if (! $GLOBALS['cfg']['ShowChgPassword']) {
  30     $GLOBALS['cfg']['ShowChgPassword'] = $GLOBALS['dbi']->selectDb('mysql');
  31 }
  32 if ($cfg['Server']['auth_type'] == 'config' || ! $cfg['ShowChgPassword']) {
  33     PMA_Message::error(
  34         __('You don\'t have sufficient privileges to be here right now!')
  35     )->display();
  36     exit;
  37 } // end if
  38
  39 /**
  40  * If the "change password" form has been submitted, checks for valid values
  41  * and submit the query or logout
  42  */
  43 if (isset($_REQUEST['nopass'])) {
  44     if ($_REQUEST['nopass'] == '1') {
  45         $password = '';
  46     } else {
  47         $password = $_REQUEST['pma_pw'];
  48     }
  49     $change_password_message = PMA_setChangePasswordMsg();
  50     $msg = $change_password_message['msg'];
  51     if (! $change_password_message['error']) {
  52         PMA_changePassword($password, $msg, $change_password_message);
  53     } else {
  54         PMA_getChangePassMessage($change_password_message);
  55     }
  56 }
  57
  58 /**
  59  * If the "change password" form hasn't been submitted or the values submitted
  60  * aren't valid -> displays the form
  61  */
  62
  63 // Displays an error message if required
  64 if (isset($msg)) {
  65     $msg->display();
  66     unset($msg);
  67 }
  68
  69 require_once './libraries/display_change_password.lib.php';
  70
  71 echo PMA_getHtmlForChangePassword('change_pw', $username, $hostname);
  72 exit;
  73
  74 /**
  75  * Send the message as an ajax request
  76  *
  77  * @param array  $change_password_message Message to display
  78  * @param string $sql_query               SQL query executed
  79  *
  80  * @return void
  81  */
  82 function PMA_getChangePassMessage($change_password_message, $sql_query = '')
  83 {
  84     if ($GLOBALS['is_ajax_request'] == true) {
  85         /**
  86          * If in an Ajax request, we don't need to show the rest of the page
  87          */
  88         $response = PMA_Response::getInstance();
  89         if ($change_password_message['error']) {
  90             $response->addJSON('message', $change_password_message['msg']);
  91             $response->isSuccess(false);
  92         } else {
  93             $sql_query = PMA_Util::getMessage(
  94                 $change_password_message['msg'],
  95                 $sql_query,
  96                 'success'
  97             );
  98             $response->addJSON('message', $sql_query);
  99         }
 100         exit;
 101     }
 102 }
 103
 104 /**
 105  * Generate the message
 106  *
 107  * @return array   error value and message
 108  */
 109 function PMA_setChangePasswordMsg()
 110 {
 111     $error = false;
 112     $message = PMA_Message::success(__('The profile has been updated.'));
 113
 114     if (($_REQUEST['nopass'] != '1')) {
 115         if (empty($_REQUEST['pma_pw']) || empty($_REQUEST['pma_pw2'])) {
 116             $message = PMA_Message::error(__('The password is empty!'));
 117             $error = true;
 118         } elseif ($_REQUEST['pma_pw'] != $_REQUEST['pma_pw2']) {
 119             $message = PMA_Message::error(__('The passwords aren\'t the same!'));
 120             $error = true;
 121         }
 122     }
 123     return array('error' => $error, 'msg' => $message);
 124 }
 125
 126 /**
 127  * Change the password
 128  *
 129  * @param string $password                New password
 130  * @param string $message                 Message
 131  * @param array  $change_password_message Message to show
 132  *
 133  * @return void
 134  */
 135 function PMA_changePassword($password, $message, $change_password_message)
 136 {
 137     global $auth_plugin;
 138
 139     $hashing_function = PMA_changePassHashingFunction();
 140
 141     $orig_auth_plugin = null;
 142
 143     $row = $GLOBALS['dbi']->fetchSingleRow('SELECT CURRENT_USER() as user');
 144     $curr_user = $row['user'];
 145     list($username, $hostname) = explode('@', $curr_user);
 146
 147     $serverType = PMA_Util::getServerType();
 148
 149     if (isset($_REQUEST['authentication_plugin'])
 150         && ! empty($_REQUEST['authentication_plugin'])
 151     ) {
 152         $orig_auth_plugin = $_REQUEST['authentication_plugin'];
 153     } else {
 154         $orig_auth_plugin = PMA_getCurrentAuthenticationPlugin(
 155             'change', $username, $hostname
 156         );
 157     }
 158
 159     if ($serverType == 'MySQL'
 160         && PMA_MYSQL_INT_VERSION >= 50706
 161     ) {
 162         $sql_query = 'ALTER USER \'' . $username . '\'@\'' . $hostname
 163             . '\' IDENTIFIED WITH ' . $orig_auth_plugin . ' BY '
 164             . (($password == '') ? '\'\'' : '\'***\'');
 165     } else if (($serverType == 'MySQL'
 166         && PMA_MYSQL_INT_VERSION >= 50507)
 167         || ($serverType == 'MariaDB'
 168         && PMA_MYSQL_INT_VERSION >= 50200)
 169     ) {
 170         // For MySQL versions 5.5.7+ and MariaDB versions 5.2+,
 171         // explicitly set value of `old_passwords` so that
 172         // it does not give an error while using
 173         // the PASSWORD() function
 174         if ($orig_auth_plugin == 'sha256_password') {
 175             $value = 2;
 176         } else {
 177             $value = 0;
 178         }
 179         $GLOBALS['dbi']->tryQuery('SET `old_passwords` = ' . $value . ';');
 180     }
 181         $sql_query = 'SET password = '
 182             . (($password == '') ? '\'\'' : $hashing_function . '(\'***\')');
 183     PMA_changePassUrlParamsAndSubmitQuery(
 184         $username, $hostname, $password,
 185         $sql_query, $hashing_function, $orig_auth_plugin
 186     );
 187
 188     $auth_plugin->handlePasswordChange($password);
 189     PMA_getChangePassMessage($change_password_message, $sql_query);
 190     PMA_changePassDisplayPage($message, $sql_query);
 191 }
 192
 193 /**
 194  * Generate the hashing function
 195  *
 196  * @return string  $hashing_function
 197  */
 198 function PMA_changePassHashingFunction()
 199 {
 200     if (PMA_isValid(
 201         $_REQUEST['authentication_plugin'], 'identical', 'mysql_old_password'
 202     )) {
 203         $hashing_function = 'OLD_PASSWORD';
 204     } else {
 205         $hashing_function = 'PASSWORD';
 206     }
 207     return $hashing_function;
 208 }
 209
 210 /**
 211  * Generate the error url and submit the query
 212  *
 213  * @param string $username              Username
 214  * @param string $hostname              Hostname
 215  * @param string $password              Password
 216  * @param string $sql_query             SQL query
 217  * @param string $hashing_function      Hashing function
 218  * @param string $orig_auth_plugin      Original Authentication Plugin
 219  *
 220  * @return void
 221  */
 222 function PMA_changePassUrlParamsAndSubmitQuery(
 223     $username, $hostname, $password, $sql_query, $hashing_function, $orig_auth_plugin
 224 ) {
 225     $err_url = 'user_password.php' . PMA_URL_getCommon();
 226     $serverType = PMA_Util::getServerType();
 227
 228     if ($serverType == 'MySQL' && PMA_MYSQL_INT_VERSION >= 50706) {
 229         $local_query = 'ALTER USER \'' . $username . '\'@\'' . $hostname . '\''
 230             . ' IDENTIFIED with ' . $orig_auth_plugin . ' BY '
 231             . (($password == '')
 232             ? '\'\''
 233             : '\'' . PMA_Util::sqlAddSlashes($password) . '\'');
 234     } else if ($serverType == 'MariaDB'
 235         && PMA_MYSQL_INT_VERSION >= 50200
 236     ) {
 237         if ($orig_auth_plugin == 'mysql_native_password') {
 238             // Set the hashing method used by PASSWORD()
 239             // to be 'mysql_native_password' type
 240             $GLOBALS['dbi']->tryQuery('SET old_passwords = 0;');
 241         } else if ($orig_auth_plugin == 'sha256_password') {
 242             // Set the hashing method used by PASSWORD()
 243             // to be 'sha256_password' type
 244             $GLOBALS['dbi']->tryQuery('SET `old_passwords` = 2;');
 245         }
 246
 247         $hashedPassword = PMA_getHashedPassword($_POST['pma_pw']);
 248
 249         $local_query = "UPDATE `mysql`.`user` SET"
 250             . " `authentication_string` = '" . $hashedPassword
 251             . "', `Password` = '', "
 252             . " `plugin` = '" . $orig_auth_plugin . "'"
 253             . " WHERE `User` = '" . $username . "' AND Host = '"
 254             . $hostname . "';";
 255
 256         $GLOBALS['dbi']->tryQuery("FLUSH PRIVILEGES;");
 257     } else {
 258         $local_query = 'SET password = ' . (($password == '')
 259             ? '\'\''
 260             : $hashing_function . '(\'' . PMA_Util::sqlAddSlashes($password)
 261                 . '\')');
 262     }
 263     if (! @$GLOBALS['dbi']->tryQuery($local_query)) {
 264         PMA_Util::mysqlDie($GLOBALS['dbi']->getError(), $sql_query, false, $err_url);
 265     }
 266 }
 267
 268 /**
 269  * Display the page
 270  *
 271  * @param string $message   Message
 272  * @param string $sql_query SQL query
 273  *
 274  * @return void
 275  */
 276 function PMA_changePassDisplayPage($message, $sql_query)
 277 {
 278     echo '<h1>' . __('Change password') . '</h1>' . "\n\n";
 279     echo PMA_Util::getMessage(
 280         $message, $sql_query, 'success'
 281     );
 282     echo '<a href="index.php' . PMA_URL_getCommon()
 283         . ' target="_parent">' . "\n"
 284         . '<strong>' . __('Back') . '</strong></a>';
 285     exit;
 286 }