/**
* @param string $path Path of file from which has been read
* @param string $data Data that has been read from file
*/
public function postFile_get_contents($path, $data)
{
$plainData = null;
$view = new \OC_FilesystemView('/');
// init session
$session = new \OCA\Encryption\Session($view);
// If data is a catfile
if (Crypt::mode() === 'server' && Crypt::isCatfileContent($data)) {
$handle = fopen('crypt://' . $path, 'r');
if (is_resource($handle)) {
while (($plainDataChunk = fgets($handle, 8192)) !== false) {
$plainData .= $plainDataChunk;
}
}
} elseif (Crypt::mode() == 'server' && \OC::$session->exists('legacyenckey') && Crypt::isEncryptedMeta($path)) {
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$plainData = Crypt::legacyBlockDecrypt($data, $session->getLegacyKey());
\OC_FileProxy::$enabled = $proxyStatus;
}
if (!isset($plainData)) {
$plainData = $data;
}
return $plainData;
}
/**
* Check if a given path identifies an encrypted file
* @param string $path
* @return boolean
*/
public function isEncryptedPath($path)
{
// Disable encryption proxy so data retrieved is in its
// original form
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$data = '';
// we only need 24 byte from the last chunk
if ($this->view->file_exists($path)) {
$handle = $this->view->fopen($path, 'r');
if (is_resource($handle)) {
// suppress fseek warining, we handle the case that fseek doesn't
// work in the else branch
if (@fseek($handle, -24, SEEK_END) === 0) {
$data = fgets($handle);
} else {
// if fseek failed on the storage we create a local copy from the file
// and read this one
fclose($handle);
$localFile = $this->view->getLocalFile($path);
$handle = fopen($localFile, 'r');
if (is_resource($handle) && fseek($handle, -24, SEEK_END) === 0) {
$data = fgets($handle);
}
}
fclose($handle);
}
}
// re-enable proxy
\OC_FileProxy::$enabled = $proxyStatus;
return Crypt::isCatfileContent($data);
}
/**
* @param string $path Path of file from which has been read
* @param string $data Data that has been read from file
*/
public function postFile_get_contents($path, $data)
{
$plainData = null;
$view = new \OC\Files\View('/');
// If data is a catfile
if (Crypt::mode() === 'server' && Crypt::isCatfileContent($data)) {
$handle = fopen('crypt://' . $path, 'r');
if (is_resource($handle)) {
while (($plainDataChunk = fgets($handle, 8192)) !== false) {
$plainData .= $plainDataChunk;
}
}
}
if (!isset($plainData)) {
$plainData = $data;
}
return $plainData;
}
/**
* @brief Check if a given path identifies an encrypted file
* @param string $path
* @return boolean
*/
public function isEncryptedPath($path)
{
// Disable encryption proxy so data retrieved is in its
// original form
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
// we only need 24 byte from the last chunk
$data = '';
$handle = $this->view->fopen($path, 'r');
if (is_resource($handle) && !fseek($handle, -24, SEEK_END)) {
$data = fgets($handle);
}
// re-enable proxy
\OC_FileProxy::$enabled = $proxyStatus;
return Crypt::isCatfileContent($data);
}
