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\libraries\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' || ! $cfg['ShowChgPassword']) {
  33     PMA\libraries\Message::error(
  34         __('You don\'t have sufficient privileges to be here right now!')
  35     )->display();
  36     exit;
  37 } // end if
  38
  39 /**
  40  * If the "change password" form has been submitted, checks for valid values
  41  * and submit the query or logout
  42  */
  43 if (isset($_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         $response = PMA\libraries\Response::getInstance();
  89         if ($change_password_message['error']) {
  90             $response->addJSON('message', $change_password_message['msg']);
  91             $response->setRequestStatus(false);
  92         } else {
  93             $sql_query = PMA\libraries\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     $message = PMA\libraries\Message::success(__('The profile has been updated.'));
 113
 114     if (($_REQUEST['nopass'] != '1')) {
 115         if (strlen($_REQUEST['pma_pw']) === 0 || strlen($_REQUEST['pma_pw2']) === 0) {
 116             $message = PMA\libraries\Message::error(__('The password is empty!'));
 117             $error = true;
 118         } elseif ($_REQUEST['pma_pw'] !== $_REQUEST['pma_pw2']) {
 119             $message = PMA\libraries\Message::error(
 120                 __('The passwords aren\'t the same!')
 121             );
 122             $error = true;
 123         } elseif (strlen($_REQUEST['pma_pw']) > 256) {
 124             $message = PMA_Message::error(__('Password is too long!'));
 125             $error = true;
 126         }
 127     }
 128     return array('error' => $error, 'msg' => $message);
 129 }
 130
 131 /**
 132  * Change the password
 133  *
 134  * @param string $password                New password
 135  * @param string $message                 Message
 136  * @param array  $change_password_message Message to show
 137  *
 138  * @return void
 139  */
 140 function PMA_changePassword($password, $message, $change_password_message)
 141 {
 142     global $auth_plugin;
 143
 144     $hashing_function = PMA_changePassHashingFunction();
 145
 146     $row = $GLOBALS['dbi']->fetchSingleRow('SELECT CURRENT_USER() as user');
 147     $curr_user = $row['user'];
 148     list($username, $hostname) = explode('@', $curr_user);
 149
 150     $serverType = PMA\libraries\Util::getServerType();
 151
 152     if (isset($_REQUEST['authentication_plugin'])
 153         && ! empty($_REQUEST['authentication_plugin'])
 154     ) {
 155         $orig_auth_plugin = $_REQUEST['authentication_plugin'];
 156     } else {
 157         $orig_auth_plugin = PMA_getCurrentAuthenticationPlugin(
 158             'change', $username, $hostname
 159         );
 160     }
 161
 162     $sql_query = 'SET password = '
 163         . (($password == '') ? '\'\'' : $hashing_function . '(\'***\')');
 164
 165     if ($serverType == 'MySQL'
 166         && PMA_MYSQL_INT_VERSION >= 50706
 167     ) {
 168         $sql_query = 'ALTER USER \'' . $username . '\'@\'' . $hostname
 169             . '\' IDENTIFIED WITH ' . $orig_auth_plugin . ' BY '
 170             . (($password == '') ? '\'\'' : '\'***\'');
 171     } else if (($serverType == 'MySQL'
 172         && PMA_MYSQL_INT_VERSION >= 50507)
 173         || ($serverType == 'MariaDB'
 174         && PMA_MYSQL_INT_VERSION >= 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 (PMA_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' . PMA_URL_getCommon();
 231
 232     $serverType = PMA\libraries\Util::getServerType();
 233
 234     if ($serverType == 'MySQL' && PMA_MYSQL_INT_VERSION >= 50706) {
 235         $local_query = 'ALTER USER \'' . $username . '\'@\'' . $hostname . '\''
 236             . ' IDENTIFIED with ' . $orig_auth_plugin . ' BY '
 237             . (($password == '')
 238             ? '\'\''
 239             : '\'' . PMA\libraries\Util::sqlAddSlashes($password) . '\'');
 240     } else if ($serverType == 'MariaDB'
 241         && PMA_MYSQL_INT_VERSION >= 50200
 242         && PMA_MYSQL_INT_VERSION < 100100
 243         && $orig_auth_plugin !== ''
 244     ) {
 245         if ($orig_auth_plugin == 'mysql_native_password') {
 246             // Set the hashing method used by PASSWORD()
 247             // to be 'mysql_native_password' type
 248             $GLOBALS['dbi']->tryQuery('SET old_passwords = 0;');
 249         } else if ($orig_auth_plugin == 'sha256_password') {
 250             // Set the hashing method used by PASSWORD()
 251             // to be 'sha256_password' type
 252             $GLOBALS['dbi']->tryQuery('SET `old_passwords` = 2;');
 253         }
 254
 255         $hashedPassword = PMA_getHashedPassword($_POST['pma_pw']);
 256
 257         $local_query = "UPDATE `mysql`.`user` SET"
 258             . " `authentication_string` = '" . $hashedPassword
 259             . "', `Password` = '', "
 260             . " `plugin` = '" . $orig_auth_plugin . "'"
 261             . " WHERE `User` = '" . $username . "' AND Host = '"
 262             . $hostname . "';";
 263     } else {
 264         $local_query = 'SET password = ' . (($password == '')
 265             ? '\'\''
 266             : $hashing_function . '(\''
 267                 . PMA\libraries\Util::sqlAddSlashes($password) . '\')');
 268     }
 269     if (! @$GLOBALS['dbi']->tryQuery($local_query)) {
 270         PMA\libraries\Util::mysqlDie(
 271             $GLOBALS['dbi']->getError(),
 272             $sql_query,
 273             false,
 274             $err_url
 275         );
 276     }
 277
 278     // Flush privileges after successful password change
 279     $GLOBALS['dbi']->tryQuery("FLUSH PRIVILEGES;");
 280 }
 281
 282 /**
 283  * Display the page
 284  *
 285  * @param string $message   Message
 286  * @param string $sql_query SQL query
 287  *
 288  * @return void
 289  */
 290 function PMA_changePassDisplayPage($message, $sql_query)
 291 {
 292     echo '<h1>' , __('Change password') , '</h1>' , "\n\n";
 293     echo PMA\libraries\Util::getMessage(
 294         $message, $sql_query, 'success'
 295     );
 296     echo '<a href="index.php' , PMA_URL_getCommon()
 297         , ' target="_parent">' , "\n"
 298         , '<strong>' , __('Back') , '</strong></a>';
 299     exit;
 300 }