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