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pma/file_echo.php 2.03 KB
a1684257   Administrator   first commit
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  <?php
  /* vim: set expandtab sw=4 ts=4 sts=4: */
  /**
   * "Echo" service to allow force downloading of exported charts (png or svg)
   * and server status monitor settings
   *
   * @package PhpMyAdmin
   */
  
  require_once './libraries/common.inc.php';
  
  /* For chart exporting */
  if (isset($_REQUEST['filename']) && isset($_REQUEST['image'])) {
      $allowed = array(
          'image/png'     => 'png',
          'image/svg+xml' => 'svg',
      );
  
      /* Check whether MIME type is allowed */
      if (! isset($allowed[$_REQUEST['type']])) {
          die(__('Invalid export type'));
      }
  
      /*
       * Check file name to match mime type and not contain new lines
       * to prevent response splitting.
       */
      $extension = $allowed[$_REQUEST['type']];
      $valid_match = '/^[^\n\r]*\.' . $extension . '$/';
      if (! preg_match($valid_match, $_REQUEST['filename'])) {
          if (! preg_match('/^[^\n\r]*$/', $_REQUEST['filename'])) {
              /* Filename is unsafe, discard it */
              $filename = 'download.' . $extension;
          } else {
              /* Add extension */
              $filename = $_REQUEST['filename'] . '.' . $extension;
          }
      } else {
          /* Filename from request should be safe here */
          $filename = $_REQUEST['filename'];
      }
  
      /* Decode data */
      if ($extension != 'svg') {
          $data = substr($_REQUEST['image'], strpos($_REQUEST['image'], ',') + 1);
          $data = base64_decode($data);
      } else {
          $data = $_REQUEST['image'];
      }
  
      /* Send download header */
      PMA_download_header($filename, $_REQUEST['type'], strlen($data));
  
      /* Send data */
      echo $data;
  
  /* For monitor chart config export */
  } else if (isset($_REQUEST['monitorconfig'])) {
      PMA_download_header('monitor.cfg', 'application/force-download');
      echo urldecode($_REQUEST['monitorconfig']);
  
  /* For monitor chart config import */
  } else if (isset($_REQUEST['import'])) {
      header('Content-type: text/plain');
      if(!file_exists($_FILES['file']['tmp_name'])) exit();
      echo file_get_contents($_FILES['file']['tmp_name']);
  }
  ?>