<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Provides download to a given field defined in parameters.
*
* @package PhpMyAdmin
*/

/**
* Common functions.
*/
// we don't want the usual PMA_Response-generated HTML above the column's data
define('PMA_BYPASS_GET_INSTANCE', 1);
require_once 'libraries/common.inc.php';
require_once 'libraries/mime.lib.php';

/**
* Sets globals from $_GET
*/
$get_params = array(
'where_clause',
'transform_key'
);

foreach ($get_params as $one_get_param) {
if (isset($_GET[$one_get_param])) {
$GLOBALS[$one_get_param] = $_GET[$one_get_param];
}
}

/* Check parameters */
PMA_Util::checkParameters(
array('db', 'table', 'where_clause', 'transform_key')
);

/* Select database */
if (!PMA_DBI_select_db($db)) {
PMA_Util::mysqlDie(
sprintf(__('\'%s\' database does not exist.'), htmlspecialchars($db)),
'', ''
);
}

/* Check if table exists */
if (!PMA_DBI_get_columns($db, $table)) {
PMA_Util::mysqlDie(__('Invalid table name'));
}

/* Grab data */
$sql = 'SELECT ' . PMA_Util::backquote($transform_key)
. ' FROM ' . PMA_Util::backquote($table)
. ' WHERE ' . $where_clause . ';';
$result = PMA_DBI_fetch_value($sql);

/* Check return code */
if ($result === false) {
PMA_Util::mysqlDie(__('MySQL returned an empty result set (i.e. zero rows).'), $sql);
}

/* Avoid corrupting data */
@ini_set('url_rewriter.tags', '');

PMA_downloadHeader(
$table . '-' . $transform_key . '.bin',
PMA_detectMIME($result),
strlen($result)
);
echo $result;
?>