Viewing file:  php-xinha.php (5.3 KB) -rw-r--r--
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<?php
/** Write the appropriate xinha_config directives to pass data to a PHP (Plugin) backend file.
*
* ImageManager Example:
* The following would be placed in step 3 of your configuration (see the NewbieGuide
* (http://xinha.python-hosting.com/wiki/NewbieGuide)
*
* <script language="javascript">
* with (xinha_config.ImageManager)
* {
* <?php
* xinha_pass_to_php_backend
* (
* array
* (
* 'images_dir' => '/home/your/directory',
* 'images_url' => '/directory'
* )
* )
* ?>
* }
* </script>
*
*/
function xinha_pass_to_php_backend($Data, $KeyLocation = 'Xinha:BackendKey', $ReturnPHP = FALSE)
{
$bk = array();
$bk['data'] = serialize($Data);
@session_start();
if(!isset($_SESSION[$KeyLocation]))
{
$_SESSION[$KeyLocation] = uniqid('Key_');
}
$bk['session_name'] = session_name();
$bk['key_location'] = $KeyLocation;
$bk['hash'] =
function_exists('sha1') ?
sha1($_SESSION[$KeyLocation] . $bk['data'])
: md5($_SESSION[$KeyLocation] . $bk['data']);
// The data will be passed via a postback to the
// backend, we want to make sure these are going to come
// out from the PHP as an array like $bk above, so
// we need to adjust the keys.
$backend_data = array();
foreach($bk as $k => $v)
{
$backend_data["backend_data[$k]"] = $v;
}
// The session_start() above may have been after data was sent, so cookies
// wouldn't have worked.
$backend_data[session_name()] = session_id();
if($ReturnPHP)
{
return array('backend_data' => $backend_data);
}
else
{
echo 'backend_data = ' . xinha_to_js($backend_data) . "; \n";
}
}
/** Convert PHP data structure to Javascript */
function xinha_to_js($var, $tabs = 0)
{
if(is_numeric($var))
{
return $var;
}
if(is_string($var))
{
return "'" . xinha_js_encode($var) . "'";
}
if(is_array($var))
{
$useObject = false;
foreach(array_keys($var) as $k) {
if(!is_numeric($k)) $useObject = true;
}
$js = array();
foreach($var as $k => $v)
{
$i = "";
if($useObject) {
if(preg_match('#^[a-zA-Z]+[a-zA-Z0-9]*$#', $k)) {
$i .= "$k: ";
} else {
$i .= "'$k': ";
}
}
$i .= xinha_to_js($v, $tabs + 1);
$js[] = $i;
}
if($useObject) {
$ret = "{\n" . xinha_tabify(implode(",\n", $js), $tabs) . "\n}";
} else {
$ret = "[\n" . xinha_tabify(implode(",\n", $js), $tabs) . "\n]";
}
return $ret;
}
return 'null';
}
/** Like htmlspecialchars() except for javascript strings. */
function xinha_js_encode($string)
{
static $strings = "\\,\",',%,&,<,>,{,},@,\n,\r";
if(!is_array($strings))
{
$tr = array();
foreach(explode(',', $strings) as $chr)
{
$tr[$chr] = sprintf('\x%02X', ord($chr));
}
$strings = $tr;
}
return strtr($string, $strings);
}
/** Used by plugins to get the config passed via
* xinha_pass_to_backend()
* returns either the structure given, or NULL
* if none was passed or a security error was encountered.
*/
function xinha_read_passed_data()
{
if(isset($_REQUEST['backend_data']) && is_array($_REQUEST['backend_data']))
{
$bk = $_REQUEST['backend_data'];
session_name($bk['session_name']);
@session_start();
if(!isset($_SESSION[$bk['key_location']])) return NULL;
if($bk['hash'] ===
function_exists('sha1') ?
sha1($_SESSION[$bk['key_location']] . $bk['data'])
: md5($_SESSION[$bk['key_location']] . $bk['data']))
{
return unserialize(ini_get('magic_quotes_gpc') ? stripslashes($bk['data']) : $bk['data']);
}
}
return NULL;
}
/** Used by plugins to get a query string that can be sent to the backend
* (or another part of the backend) to send the same data.
*/
function xinha_passed_data_querystring()
{
$qs = array();
if(isset($_REQUEST['backend_data']) && is_array($_REQUEST['backend_data']))
{
foreach($_REQUEST['backend_data'] as $k => $v)
{
$v = ini_get('magic_quotes_gpc') ? stripslashes($v) : $v;
$qs[] = "backend_data[" . rawurlencode($k) . "]=" . rawurlencode($v);
}
}
$qs[] = session_name() . '=' . session_id();
return implode('&', $qs);
}
/** Just space-tab indent some text */
function xinha_tabify($text, $tabs)
{
if($text)
{
return str_repeat(" ", $tabs) . preg_replace('/\n(.)/', "\n" . str_repeat(" ", $tabs) . "\$1", $text);
}
}
/** Return upload_max_filesize value from php.ini in kilobytes (function adapted from php.net)**/
function upload_max_filesize_kb()
{
$val = ini_get('upload_max_filesize');
$val = trim($val);
$last = strtolower($val{strlen($val)-1});
switch($last)
{
// The 'G' modifier is available since PHP 5.1.0
case 'g':
$val *= 1024;
case 'm':
$val *= 1024;
}
return $val;
}
?>
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