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Leverage the streaming support, even if its not real streaming yet #21

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Leverage the streaming support, even if its not real streaming yet #21

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e25570a
Leverage the streaming support, even if its not real streaming yet
dawehner Jul 21, 2016
f10cf4a
leverage the swappablity
dawehner Jul 21, 2016
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59 changes: 22 additions & 37 deletions src/EncryptStreamWrapper.php
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
use Drupal\Core\StreamWrapper\StreamWrapperInterface;
use Drupal\Core\Url;
use Drupal\encrypt\EncryptionProfileInterface;
use Drupal\encrypt\Stream\NoStreaming;

/**
* Provides a scheme wrapper which encrypts / decrypts automatically.
Expand Down Expand Up @@ -88,37 +89,14 @@ public static function basePath() {
}

/**
* Decrypts a given file.
* Gets an instance of the encryption stream.
*
* @param string $raw_file
* The encrypted content of the raw file.
* @param \Drupal\encrypt\EncryptionProfileInterface $encryption_profile
* The used encryption profile.
*
* @return string
* The decrypted string.
*/
protected function decrypt($raw_file, EncryptionProfileInterface $encryption_profile) {
/** @var \Drupal\encrypt\EncryptService $encryption */
$encryption = \Drupal::service('encryption');
return $encryption->decrypt($raw_file, $encryption_profile);
}

/**
* Encrypts a given file.
*
* @param string $raw_file
* The descrypted content of the raw file.
* @param \Drupal\encrypt\EncryptionProfileInterface $encryption_profile
* The used encryption profile.
*
* @return string
* The encrypted string.
* @return \Drupal\encrypt\Stream\EncryptStreamInterface
* The stream interface.
*/
protected function encrypt($raw_file, EncryptionProfileInterface $encryption_profile) {
/** @var \Drupal\encrypt\EncryptService $encryption */
$encryption = \Drupal::service('encryption');
return $encryption->encrypt($raw_file, $encryption_profile);
protected function getStreamEncryption(EncryptionProfileInterface $encryption_profile) {
$encryption_method = $encryption_profile->getEncryptionMethod();
return $encryption_method->getStreamingInstance();
}

/**
Expand Down Expand Up @@ -157,12 +135,15 @@ public function stream_open($uri, $mode, $options, &$opened_path) {
$this->handle = fopen('php://memory', 'w+b');
// If file exists, decrypt and load it into memory.
if (file_exists($path)) {
$raw_file = file_get_contents($path);
$decrypted_file = $this->decrypt($raw_file, $encryption_profile);
$this->setFileInfo($decrypted_file, $uri);

// Write to memory.
fwrite($this->handle, $decrypted_file);
$encrypted_resource = fopen($path, 'r');
$this->getStreamEncryption($encryption_profile)->decrypt($encrypted_resource, $this->handle, $encryption_profile);
fclose($encrypted_resource);
rewind($this->handle);

// @todo What do we do with this ...
// $this->setFileInfo($decrypted_file, $uri);
}
// Set $opened_path.
if ((bool) $this->handle && $options & STREAM_USE_PATH) {
Expand Down Expand Up @@ -202,10 +183,14 @@ public function stream_close() {

// Encrypt file and save.
rewind($this->handle);
$file_contents = stream_get_contents($this->handle);
file_put_contents($this->getLocalPath(), $this->encrypt($file_contents, $encryption_profile));
// Store important file info.
$this->setFileInfo($file_contents, $this->uri);

$output_resource = fopen($this->getLocalPath(), 'w+');
$this->getStreamEncryption($encryption_profile)->encrypt($this->handle, $output_resource, $encryption_profile);
fclose($output_resource);

// @todo what do we do with this.
// $this->setFileInfo($file_contents, $this->uri);

// Close handle and reset manual key.
fclose($this->handle);
}
Expand Down