transformation_wrapper.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Wrapper script for rendering transformations
   5  *
   6  * @package PhpMyAdmin
   7  */
   8
   9 use PhpMyAdmin\Core;
  10 use PhpMyAdmin\Relation;
  11 use PhpMyAdmin\Response;
  12 use PhpMyAdmin\Transformations;
  13
  14 /**
  15  *
  16  */
  17 define('IS_TRANSFORMATION_WRAPPER', true);
  18
  19 /**
  20  * Gets a core script and starts output buffering work
  21  */
  22 require_once './libraries/common.inc.php';
  23
  24 $cfgRelation = Relation::getRelationsParam();
  25
  26 /**
  27  * Ensures db and table are valid, else moves to the "parent" script
  28  */
  29 require_once './libraries/db_table_exists.inc.php';
  30
  31
  32 /**
  33  * Sets globals from $_REQUEST
  34  */
  35 $request_params = array(
  36     'cn',
  37     'ct',
  38     'sql_query',
  39     'transform_key',
  40     'where_clause'
  41 );
  42 $size_params = array(
  43     'newHeight',
  44     'newWidth',
  45 );
  46 foreach ($request_params as $one_request_param) {
  47     if (isset($_REQUEST[$one_request_param])) {
  48         if (in_array($one_request_param, $size_params)) {
  49             $GLOBALS[$one_request_param] = intval($_REQUEST[$one_request_param]);
  50             if ($GLOBALS[$one_request_param] > 2000) {
  51                 $GLOBALS[$one_request_param] = 2000;
  52             }
  53         } else {
  54             $GLOBALS[$one_request_param] = $_REQUEST[$one_request_param];
  55         }
  56     }
  57 }
  58
  59
  60 /**
  61  * Get the list of the fields of the current table
  62  */
  63 $GLOBALS['dbi']->selectDb($db);
  64 if (isset($where_clause)) {
  65     $result = $GLOBALS['dbi']->query(
  66         'SELECT * FROM ' . PhpMyAdmin\Util::backquote($table)
  67         . ' WHERE ' . $where_clause . ';',
  68         null,
  69         PhpMyAdmin\DatabaseInterface::QUERY_STORE
  70     );
  71     $row = $GLOBALS['dbi']->fetchAssoc($result);
  72 } else {
  73     $result = $GLOBALS['dbi']->query(
  74         'SELECT * FROM ' . PhpMyAdmin\Util::backquote($table) . ' LIMIT 1;',
  75         null,
  76         PhpMyAdmin\DatabaseInterface::QUERY_STORE
  77     );
  78     $row = $GLOBALS['dbi']->fetchAssoc($result);
  79 }
  80
  81 // No row returned
  82 if (! $row) {
  83     exit;
  84 } // end if (no record returned)
  85
  86 $default_ct = 'application/octet-stream';
  87
  88 if ($cfgRelation['commwork'] && $cfgRelation['mimework']) {
  89     $mime_map = Transformations::getMIME($db, $table);
  90     $mime_options = Transformations::getOptions(
  91         isset($mime_map[$transform_key]['transformation_options'])
  92         ? $mime_map[$transform_key]['transformation_options'] : ''
  93     );
  94
  95     foreach ($mime_options as $key => $option) {
  96         if (substr($option, 0, 10) == '; charset=') {
  97             $mime_options['charset'] = $option;
  98         }
  99     }
 100 }
 101
 102 // Only output the http headers
 103 $response = Response::getInstance();
 104 $response->getHeader()->sendHttpHeaders();
 105
 106 // [MIME]
 107 if (isset($ct) && ! empty($ct)) {
 108     $mime_type = $ct;
 109 } else {
 110     $mime_type = (!empty($mime_map[$transform_key]['mimetype'])
 111         ? str_replace('_', '/', $mime_map[$transform_key]['mimetype'])
 112         : $default_ct)
 113     . (isset($mime_options['charset']) ? $mime_options['charset'] : '');
 114 }
 115
 116 Core::downloadHeader($cn, $mime_type);
 117
 118 if (! isset($_REQUEST['resize'])) {
 119     if (stripos($mime_type, 'html') === false) {
 120         echo $row[$transform_key];
 121     } else {
 122         echo htmlspecialchars($row[$transform_key]);
 123     }
 124 } else {
 125     // if image_*__inline.inc.php finds that we can resize,
 126     // it sets the resize parameter to jpeg or png
 127
 128     $srcImage = imagecreatefromstring($row[$transform_key]);
 129     $srcWidth = ImageSX($srcImage);
 130     $srcHeight = ImageSY($srcImage);
 131
 132     // Check to see if the width > height or if width < height
 133     // if so adjust accordingly to make sure the image
 134     // stays smaller than the new width and new height
 135
 136     $ratioWidth = $srcWidth/$_REQUEST['newWidth'];
 137     $ratioHeight = $srcHeight/$_REQUEST['newHeight'];
 138
 139     if ($ratioWidth < $ratioHeight) {
 140         $destWidth = $srcWidth/$ratioHeight;
 141         $destHeight = $_REQUEST['newHeight'];
 142     } else {
 143         $destWidth = $_REQUEST['newWidth'];
 144         $destHeight = $srcHeight/$ratioWidth;
 145     }
 146
 147     if ($_REQUEST['resize']) {
 148         $destImage = ImageCreateTrueColor($destWidth, $destHeight);
 149     }
 150
 151     // ImageCopyResized($destImage, $srcImage, 0, 0, 0, 0,
 152     // $destWidth, $destHeight, $srcWidth, $srcHeight);
 153     // better quality but slower:
 154     ImageCopyResampled(
 155         $destImage, $srcImage, 0, 0, 0, 0, $destWidth,
 156         $destHeight, $srcWidth, $srcHeight
 157     );
 158
 159     if ($_REQUEST['resize'] == 'jpeg') {
 160         ImageJPEG($destImage, null, 75);
 161     }
 162     if ($_REQUEST['resize'] == 'png') {
 163         ImagePNG($destImage);
 164     }
 165     ImageDestroy($srcImage);
 166     ImageDestroy($destImage);
 167 }