imageData = 'data:image/png;base64,' . Common::getRequestVar('imageData', self::TRANSPARENT_PNG_PIXEL, 'string', $_POST);
echo $view->render();
}
function exportImage()
{
self::exportImageWindow();
}
/**
* Output binary image from base-64 encoded data.
*
* @deprecated 1.5.1
*
* @internal param string $imageData Base-64 encoded image data (via $_POST)
*/
static public function outputBinaryImage()
{
Piwik::checkUserHasSomeViewAccess();
$rawData = Common::getRequestVar('imageData', '', 'string', $_POST);
// returns false if any illegal characters in input
$data = base64_decode($rawData);
if ($data !== false) {
// check for PNG header
if (Common::substr($data, 0, 8) === "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a") {
header('Content-Type: image/png');
// more robust validation (if available)
if (function_exists('imagecreatefromstring')) {
// validate image data
$imgResource = @imagecreatefromstring($data);
if ($imgResource !== false) {
// output image and clean-up
imagepng($imgResource);
imagedestroy($imgResource);
exit;
}
} else {
echo $data;
exit;
}
}
}
Piwik::setHttpStatus('400 Bad Request');
exit;
}
function outputImage()
{
self::outputBinaryImage();
}
/**
* Output the merged CSS file.
* This method is called when the asset manager is enabled.
*
* @see core/AssetManager.php
*/
public function getCss()
{
$cssMergedFile = Piwik_AssetManager::getMergedCssFileLocation();
Piwik::serveStaticFile($cssMergedFile, "text/css");
}
/**
* Output the merged JavaScript file.
* This method is called when the asset manager is enabled.
*
* @see core/AssetManager.php
*/
public function getJs()
{
$jsMergedFile = Piwik_AssetManager::getMergedJsFileLocation();
Piwik::serveStaticFile($jsMergedFile, "application/javascript; charset=UTF-8");
}
/**
* Output redirection page instead of linking directly to avoid
* exposing the referrer on the Piwik demo.
*
* @internal param string $url (via $_GET)
*/
public function redirect()
{
$url = Common::getRequestVar('url', '', 'string', $_GET);
// validate referrer
$referrer = Piwik_Url::getReferer();
if (empty($referrer) || !Piwik_Url::isLocalUrl($referrer)) {
die('Invalid Referer detected - This means that your web browser is not sending the "Referer URL" which is
required to proceed with the redirect. Verify your browser settings and add-ons, to check why your browser
is not sending this referer.
You can access the page at: ' . $url);
}
// mask visits to *.piwik.org
if (!self::isPiwikUrl($url)) {
Piwik::checkUserHasSomeViewAccess();
}
if (!Common::isLookLikeUrl($url)) {
die('Please check the &url= parameter: it should to be a valid URL');
}
@header('Content-Type: text/html; charset=utf-8');
echo '';
exit;
}
/**
* Validate URL against *.piwik.org domains
*
* @param string $url
* @return bool True if valid; false otherwise
*/
static public function isPiwikUrl($url)
{
// guard for IE6 meta refresh parsing weakness (OSVDB 19029)
if (strpos($url, ';') !== false
|| strpos($url, ';') !== false
) {
return false;
}
if (preg_match('~^http://(qa\.|demo\.|dev\.|forum\.)?piwik.org([#?/]|$)~', $url)) {
return true;
}
// Allow clockworksms domain
if (strpos($url, 'http://www.clockworksms.com/') === 0) {
return true;
}
return false;
}
}