/**
* returns binary image data from a image identified by a imagelink
*
* @param array $imageParams
* @return string binary data
* @throws Tinebase_Exception_UnexpectedValue
*/
public static function getImageData($imageParams)
{
$tempFile = Tinebase_TempFile::getInstance()->getTempFile($imageParams['id']);
if (!Tinebase_ImageHelper::isImageFile($tempFile->path)) {
throw new Tinebase_Exception_UnexpectedValue('Given file is not an image.');
}
return file_get_contents($tempFile->path);
}
/**
* download message part
*
* @param string $_messageId
* @param string $_partId
* @param string $disposition
* @param boolean $validateImage
*/
protected function _outputMessagePart($_messageId, $_partId = NULL, $disposition = 'attachment', $validateImage = FALSE)
{
$oldMaxExcecutionTime = Tinebase_Core::setExecutionLifeTime(0);
try {
// fetch extracted winmail dat contents
if (strstr($_partId, 'winmail-')) {
$partIndex = explode('winmail-', $_partId);
$partIndex = intval($partIndex[1]);
$files = Felamimail_Controller_Message::getInstance()->extractWinMailDat($_messageId);
$file = $files[$partIndex];
$part = NULL;
$path = Tinebase_Core::getTempDir() . '/winmail/';
$path = $path . $_messageId . '/';
$contentType = mime_content_type($path . $file);
$this->_prepareHeader($file, $contentType);
$stream = fopen($path . $file, 'r');
} else {
// fetch normal attachment
$part = Felamimail_Controller_Message::getInstance()->getMessagePart($_messageId, $_partId);
$contentType = $_partId === NULL ? Felamimail_Model_Message::CONTENT_TYPE_MESSAGE_RFC822 : $part->type;
$filename = $this->_getDownloadFilename($part, $_messageId, $contentType);
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . ' ' . ' filename: ' . $filename . ' content type ' . $contentType);
}
if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' ' . print_r($part, TRUE));
}
$this->_prepareHeader($filename, $contentType);
$stream = $_partId === NULL ? $part->getRawStream() : $part->getDecodedStream();
}
if ($validateImage) {
$tmpPath = tempnam(Tinebase_Core::getTempDir(), 'tine20_tmp_imgdata');
$tmpFile = fopen($tmpPath, 'w');
stream_copy_to_stream($stream, $tmpFile);
fclose($tmpFile);
// @todo check given mimetype or all images types?
if (!Tinebase_ImageHelper::isImageFile($tmpPath)) {
if (Tinebase_Core::isLogLevel(Zend_Log::WARN)) {
Tinebase_Core::getLogger()->warn(__METHOD__ . '::' . __LINE__ . ' Resource is no image file: ' . $filename);
}
} else {
if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' Verified ' . $contentType . ' image.');
}
readfile($tmpPath);
}
} else {
fpassthru($stream);
}
fclose($stream);
} catch (Exception $e) {
Tinebase_Core::getLogger()->warn(__METHOD__ . '::' . __LINE__ . ' Failed to get message part: ' . $e->getMessage());
}
Tinebase_Core::setExecutionLifeTime($oldMaxExcecutionTime);
exit;
}
/**
* tests if isImageFile is working
*
*/
public function testIsImageFile()
{
$this->assertTrue(Tinebase_ImageHelper::isImageFile($this->_testImagePath));
$this->assertFalse(Tinebase_ImageHelper::isImageFile(__FILE__));
}
/**
* check if data is valid, check and allow
*
* @param HTMLPurifier_URI $uri
* @param HTMLPurifier_Token $token
* @return boolean
*/
protected function _checkData($uri, $token)
{
$result = FALSE;
if ($token->name === 'img' && isset($token->attr['src'])) {
$imgSrc = $token->attr['src'];
$imgSrc = str_replace(array("\r", "\n"), '', $imgSrc);
if (preg_match('/([a-z\\/]*);base64,(.*)/', $imgSrc, $matches)) {
$mimetype = $matches[1];
$base64 = $matches[2];
if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' Found base64 image: ' . $base64);
}
$tmpPath = tempnam(Tinebase_Core::getTempDir(), 'tine20_tmp_imgdata');
file_put_contents($tmpPath, @base64_decode($base64));
// @todo check given mimetype or all images types?
if (!Tinebase_ImageHelper::isImageFile($tmpPath)) {
if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' URI data is no image file: ' . $uri->toString());
}
} else {
if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' Verified ' . $mimetype . ' image.');
}
$result = TRUE;
}
}
} else {
if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' Only allow images data uris, discarding: ' . $token->name);
}
}
return $result;
}
