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 use PhpMyAdmin\Core;
  11 use PhpMyAdmin\Url;
  12 use PhpMyAdmin\Response;
  13 use PhpMyAdmin\Server\Privileges;
  14
  15 /**
  16  * Gets some core libraries
  17  */
  18 require_once './libraries/common.inc.php';
  19
  20 $response = Response::getInstance();
  21 $header   = $response->getHeader();
  22 $scripts  = $header->getScripts();
  23 $scripts->addFile('server_privileges.js');
  24 $scripts->addFile('vendor/zxcvbn.js');
  25
  26 /**
  27  * Displays an error message and exits if the user isn't allowed to use this
  28  * script
  29  */
  30 if (! $GLOBALS['cfg']['ShowChgPassword']) {
  31     $GLOBALS['cfg']['ShowChgPassword'] = $GLOBALS['dbi']->selectDb('mysql');
  32 }
  33 if ($cfg['Server']['auth_type'] == 'config' || ! $cfg['ShowChgPassword']) {
  34     PhpMyAdmin\Message::error(
  35         __('You don\'t have sufficient privileges to be here right now!')
  36     )->display();
  37     exit;
  38 } // end if
  39
  40 /**
  41  * If the "change password" form has been submitted, checks for valid values
  42  * and submit the query or logout
  43  */
  44 if (isset($_REQUEST['nopass'])) {
  45     if ($_REQUEST['nopass'] == '1') {
  46         $password = '';
  47     } else {
  48         $password = $_REQUEST['pma_pw'];
  49     }
  50     $change_password_message = PMA_setChangePasswordMsg();
  51     $msg = $change_password_message['msg'];
  52     if (! $change_password_message['error']) {
  53         PMA_changePassword($password, $msg, $change_password_message);
  54     } else {
  55         PMA_getChangePassMessage($change_password_message);
  56     }
  57 }
  58
  59 /**
  60  * If the "change password" form hasn't been submitted or the values submitted
  61  * aren't valid -> displays the form
  62  */
  63
  64 // Displays an error message if required
  65 if (isset($msg)) {
  66     $msg->display();
  67     unset($msg);
  68 }
  69
  70 require_once './libraries/display_change_password.lib.php';
  71
  72 echo PMA_getHtmlForChangePassword('change_pw', $username, $hostname);
  73 exit;
  74
  75 /**
  76  * Send the message as an ajax request
  77  *
  78  * @param array  $change_password_message Message to display
  79  * @param string $sql_query               SQL query executed
  80  *
  81  * @return void
  82  */
  83 function PMA_getChangePassMessage($change_password_message, $sql_query = '')
  84 {
  85     $response = Response::getInstance();
  86     if ($response->isAjax()) {
  87         /**
  88          * If in an Ajax request, we don't need to show the rest of the page
  89          */
  90         if ($change_password_message['error']) {
  91             $response->addJSON('message', $change_password_message['msg']);
  92             $response->setRequestStatus(false);
  93         } else {
  94             $sql_query = PhpMyAdmin\Util::getMessage(
  95                 $change_password_message['msg'],
  96                 $sql_query,
  97                 'success'
  98             );
  99             $response->addJSON('message', $sql_query);
 100         }
 101         exit;
 102     }
 103 }
 104
 105 /**
 106  * Generate the message
 107  *
 108  * @return array   error value and message
 109  */
 110 function PMA_setChangePasswordMsg()
 111 {
 112     $error = false;
 113     $message = PhpMyAdmin\Message::success(__('The profile has been updated.'));
 114
 115     if (($_REQUEST['nopass'] != '1')) {
 116         if (strlen($_REQUEST['pma_pw']) === 0 || strlen($_REQUEST['pma_pw2']) === 0) {
 117             $message = PhpMyAdmin\Message::error(__('The password is empty!'));
 118             $error = true;
 119         } elseif ($_REQUEST['pma_pw'] !== $_REQUEST['pma_pw2']) {
 120             $message = PhpMyAdmin\Message::error(
 121                 __('The passwords aren\'t the same!')
 122             );
 123             $error = true;
 124         } elseif (strlen($_REQUEST['pma_pw']) > 256) {
 125             $message = PMA_Message::error(__('Password is too long!'));
 126             $error = true;
 127         }
 128     }
 129     return array('error' => $error, 'msg' => $message);
 130 }
 131
 132 /**
 133  * Change the password
 134  *
 135  * @param string $password                New password
 136  * @param string $message                 Message
 137  * @param array  $change_password_message Message to show
 138  *
 139  * @return void
 140  */
 141 function PMA_changePassword($password, $message, $change_password_message)
 142 {
 143     global $auth_plugin;
 144
 145     $hashing_function = PMA_changePassHashingFunction();
 146
 147     list($username, $hostname) = $GLOBALS['dbi']->getCurrentUserAndHost();
 148
 149     $serverType = PhpMyAdmin\Util::getServerType();
 150     $serverVersion = $GLOBALS['dbi']->getVersion();
 151
 152     if (isset($_REQUEST['authentication_plugin'])
 153         && ! empty($_REQUEST['authentication_plugin'])
 154     ) {
 155         $orig_auth_plugin = $_REQUEST['authentication_plugin'];
 156     } else {
 157         $orig_auth_plugin = Privileges::getCurrentAuthenticationPlugin(
 158             'change', $username, $hostname
 159         );
 160     }
 161
 162     $sql_query = 'SET password = '
 163         . (($password == '') ? '\'\'' : $hashing_function . '(\'***\')');
 164
 165     if ($serverType == 'MySQL'
 166         && $serverVersion >= 50706
 167     ) {
 168         $sql_query = 'ALTER USER \'' . $username . '\'@\'' . $hostname
 169             . '\' IDENTIFIED WITH ' . $orig_auth_plugin . ' BY '
 170             . (($password == '') ? '\'\'' : '\'***\'');
 171     } else if (($serverType == 'MySQL'
 172         && $serverVersion >= 50507)
 173         || ($serverType == 'MariaDB'
 174         && $serverVersion >= 50200)
 175     ) {
 176         // For MySQL versions 5.5.7+ and MariaDB versions 5.2+,
 177         // explicitly set value of `old_passwords` so that
 178         // it does not give an error while using
 179         // the PASSWORD() function
 180         if ($orig_auth_plugin == 'sha256_password') {
 181             $value = 2;
 182         } else {
 183             $value = 0;
 184         }
 185         $GLOBALS['dbi']->tryQuery('SET `old_passwords` = ' . $value . ';');
 186     }
 187
 188     PMA_changePassUrlParamsAndSubmitQuery(
 189         $username, $hostname, $password,
 190         $sql_query, $hashing_function, $orig_auth_plugin
 191     );
 192
 193     $auth_plugin->handlePasswordChange($password);
 194     PMA_getChangePassMessage($change_password_message, $sql_query);
 195     PMA_changePassDisplayPage($message, $sql_query);
 196 }
 197
 198 /**
 199  * Generate the hashing function
 200  *
 201  * @return string  $hashing_function
 202  */
 203 function PMA_changePassHashingFunction()
 204 {
 205     if (Core::isValid(
 206         $_REQUEST['authentication_plugin'], 'identical', 'mysql_old_password'
 207     )) {
 208         $hashing_function = 'OLD_PASSWORD';
 209     } else {
 210         $hashing_function = 'PASSWORD';
 211     }
 212     return $hashing_function;
 213 }
 214
 215 /**
 216  * Changes password for a user
 217  *
 218  * @param string $username         Username
 219  * @param string $hostname         Hostname
 220  * @param string $password         Password
 221  * @param string $sql_query        SQL query
 222  * @param string $hashing_function Hashing function
 223  * @param string $orig_auth_plugin Original Authentication Plugin
 224  *
 225  * @return void
 226  */
 227 function PMA_changePassUrlParamsAndSubmitQuery(
 228     $username, $hostname, $password, $sql_query, $hashing_function, $orig_auth_plugin
 229 ) {
 230     $err_url = 'user_password.php' . Url::getCommon();
 231
 232     $serverType = PhpMyAdmin\Util::getServerType();
 233     $serverVersion = $GLOBALS['dbi']->getVersion();
 234
 235     if ($serverType == 'MySQL' && $serverVersion >= 50706) {
 236         $local_query = 'ALTER USER \'' . $username . '\'@\'' . $hostname . '\''
 237             . ' IDENTIFIED with ' . $orig_auth_plugin . ' BY '
 238             . (($password == '')
 239             ? '\'\''
 240             : '\'' . $GLOBALS['dbi']->escapeString($password) . '\'');
 241     } else if ($serverType == 'MariaDB'
 242         && $serverVersion >= 50200
 243         && $serverVersion < 100100
 244         && $orig_auth_plugin !== ''
 245     ) {
 246         if ($orig_auth_plugin == 'mysql_native_password') {
 247             // Set the hashing method used by PASSWORD()
 248             // to be 'mysql_native_password' type
 249             $GLOBALS['dbi']->tryQuery('SET old_passwords = 0;');
 250         } else if ($orig_auth_plugin == 'sha256_password') {
 251             // Set the hashing method used by PASSWORD()
 252             // to be 'sha256_password' type
 253             $GLOBALS['dbi']->tryQuery('SET `old_passwords` = 2;');
 254         }
 255
 256         $hashedPassword = Privileges::getHashedPassword($_POST['pma_pw']);
 257
 258         $local_query = "UPDATE `mysql`.`user` SET"
 259             . " `authentication_string` = '" . $hashedPassword
 260             . "', `Password` = '', "
 261             . " `plugin` = '" . $orig_auth_plugin . "'"
 262             . " WHERE `User` = '" . $username . "' AND Host = '"
 263             . $hostname . "';";
 264     } else {
 265         $local_query = 'SET password = ' . (($password == '')
 266             ? '\'\''
 267             : $hashing_function . '(\''
 268                 . $GLOBALS['dbi']->escapeString($password) . '\')');
 269     }
 270     if (! @$GLOBALS['dbi']->tryQuery($local_query)) {
 271         PhpMyAdmin\Util::mysqlDie(
 272             $GLOBALS['dbi']->getError(),
 273             $sql_query,
 274             false,
 275             $err_url
 276         );
 277     }
 278
 279     // Flush privileges after successful password change
 280     $GLOBALS['dbi']->tryQuery("FLUSH PRIVILEGES;");
 281 }
 282
 283 /**
 284  * Display the page
 285  *
 286  * @param string $message   Message
 287  * @param string $sql_query SQL query
 288  *
 289  * @return void
 290  */
 291 function PMA_changePassDisplayPage($message, $sql_query)
 292 {
 293     echo '<h1>' , __('Change password') , '</h1>' , "\n\n";
 294     echo PhpMyAdmin\Util::getMessage(
 295         $message, $sql_query, 'success'
 296     );
 297     echo '<a href="index.php' , Url::getCommon()
 298         , ' target="_parent">' , "\n"
 299         , '<strong>' , __('Back') , '</strong></a>';
 300     exit;
 301 }