/**
* downloads an image/thumbnail at a given size
*
* @param unknown_type $application
* @param string $id
* @param string $location
* @param int $width
* @param int $height
* @param int $ratiomode
*/
public function getImage($application, $id, $location, $width, $height, $ratiomode)
{
$this->checkAuth();
// close session to allow other requests
Tinebase_Session::writeClose(true);
$clientETag = null;
$ifModifiedSince = null;
if (isset($_SERVER['If_None_Match'])) {
$clientETag = trim($_SERVER['If_None_Match'], '"');
$ifModifiedSince = trim($_SERVER['If_Modified_Since'], '"');
} elseif (isset($_SERVER['HTTP_IF_NONE_MATCH']) && isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
$clientETag = trim($_SERVER['HTTP_IF_NONE_MATCH'], '"');
$ifModifiedSince = trim($_SERVER['HTTP_IF_MODIFIED_SINCE'], '"');
}
if ($application == 'Tinebase' && $location == 'tempFile') {
$tempFile = Tinebase_TempFile::getInstance()->getTempFile($id);
$imgInfo = Tinebase_ImageHelper::getImageInfoFromBlob(file_get_contents($tempFile->path));
$image = new Tinebase_Model_Image($imgInfo + array('application' => $application, 'id' => $id, 'location' => $location));
} else {
$image = Tinebase_Controller::getInstance()->getImage($application, $id, $location);
}
$serverETag = sha1($image->blob . $width . $height . $ratiomode);
// cache for 3600 seconds
$maxAge = 3600;
header('Cache-Control: private, max-age=' . $maxAge);
header("Expires: " . gmdate('D, d M Y H:i:s', Tinebase_DateTime::now()->addSecond($maxAge)->getTimestamp()) . " GMT");
// overwrite Pragma header from session
header("Pragma: cache");
// if the cache id is still valid
if ($clientETag == $serverETag) {
header("Last-Modified: " . $ifModifiedSince);
header("HTTP/1.0 304 Not Modified");
header('Content-Length: 0');
} else {
#$cache = Tinebase_Core::getCache();
#if ($cache->test($serverETag) === true) {
# $image = $cache->load($serverETag);
#} else {
if ($width != -1 && $height != -1) {
Tinebase_ImageHelper::resize($image, $width, $height, $ratiomode);
}
# $cache->save($image, $serverETag);
#}
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header('Content-Type: ' . $image->mime);
header('Etag: "' . $serverETag . '"');
flush();
die($image->blob);
}
}
/**
* saves image to db
*
* @param string $contactId
* @param blob $imageData
* @return blob|string
*/
public function _saveImage($contactId, $imageData)
{
if (!empty($imageData)) {
// make sure that we got a valid image blob
try {
Tinebase_ImageHelper::getImageInfoFromBlob($imageData);
} catch (Exception $e) {
Tinebase_Core::getLogger()->notice(__METHOD__ . '::' . __LINE__ . ' Invalid image blob data, preserving old image');
Tinebase_Exception::log($e);
return $this->getImage($contactId);
}
}
if (!empty($imageData)) {
$currentImg = $this->getImage($contactId);
if (empty($currentImg)) {
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . ' Creating contact image.');
}
$this->_db->insert($this->_tablePrefix . 'addressbook_image', array('contact_id' => $contactId, 'image' => base64_encode($imageData)));
} else {
if ($currentImg !== $imageData) {
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . ' Updating contact image.');
}
$where = array($this->_db->quoteInto($this->_db->quoteIdentifier('contact_id') . ' = ?', $contactId));
$this->_db->update($this->_tablePrefix . 'addressbook_image', array('image' => base64_encode($imageData)), $where);
}
}
} else {
$this->_db->delete($this->_tablePrefix . 'addressbook_image', $this->_db->quoteInto($this->_db->quoteIdentifier('contact_id') . ' = ?', $contactId));
}
return $imageData;
}
/**
* returns contact image
*
* @param string $_identifier record identifier
* @param string $_location not used, required by interface
* @return Tinebase_Model_Image
* @throws Addressbook_Exception_NotFound if no image found
*/
public function getImage($_identifier, $_location = '')
{
// get contact to ensure user has read rights
$image = Addressbook_Controller_Contact::getInstance()->getImage($_identifier);
if (empty($image)) {
throw new Addressbook_Exception_NotFound('Contact has no image.');
}
$imageInfo = Tinebase_ImageHelper::getImageInfoFromBlob($image);
return new Tinebase_Model_Image($imageInfo + array('id' => $_identifier, 'application' => $this->_applicationName, 'data' => $image));
}
/**
* gets image info and data
*
* @param string $application application which manages the image
* @param string $identifier identifier of image/record
* @param string $location optional additional identifier
* @return Tinebase_Model_Image
* @throws Tinebase_Exception_NotFound
* @throws Tinebase_Exception_UnexpectedValue
*/
public function getImage($application, $identifier, $location = '')
{
if ($location === 'vfs') {
$node = Tinebase_FileSystem::getInstance()->get($identifier);
$path = Tinebase_Model_Tree_Node_Path::STREAMWRAPPERPREFIX . Tinebase_FileSystem::getInstance()->getPathOfNode($node, true);
$image = Tinebase_ImageHelper::getImageInfoFromBlob(file_get_contents($path));
} else {
if ($application == 'Tinebase' && $location == 'tempFile') {
$tempFile = Tinebase_TempFile::getInstance()->getTempFile($identifier);
$image = Tinebase_ImageHelper::getImageInfoFromBlob(file_get_contents($tempFile->path));
} else {
$appController = Tinebase_Core::getApplicationInstance($application);
if (!method_exists($appController, 'getImage')) {
throw new Tinebase_Exception_NotFound("{$application} has no getImage function.");
}
$image = $appController->getImage($identifier, $location);
}
}
if (!$image instanceof Tinebase_Model_Image) {
if (is_array($image)) {
$image = new Tinebase_Model_Image($image + array('application' => $application, 'id' => $identifier, 'location' => $location));
} else {
throw new Tinebase_Exception_UnexpectedValue('broken image');
}
}
return $image;
}
/**
* returns image from given blob
*
* @param string $_blob
* @return Tinebase_Model_Image
*/
public static function getImageFromBlob($_blob)
{
return new Tinebase_Model_Image(Tinebase_ImageHelper::getImageInfoFromBlob($_blob), true);
}
/**
* test that exception gets thrown when given blog does not represent a valid image
*
*/
public function testGetImageInfoFromBlobException()
{
$rwongBlob = file_get_contents(__FILE__);
$this->setExpectedException('Tinebase_Exception_UnexpectedValue');
Tinebase_ImageHelper::getImageInfoFromBlob($rwongBlob);
}
