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encrypt/decrypt file versions

remotes/origin/stable6
Bjoern Schiessle 2013-07-30 12:19:04 +07:00
parent 22b8967031
commit 3640c99462
1 changed files with 124 additions and 3 deletions
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127
apps/files_encryption/lib/util.php
Unescape Escape View File

@ -662,6 +662,98 @@ class Util {
}
/**
* @brief encrypt versions from given file
* @param array $filelist list of encrypted files, relative to data/user/files
* @return boolean
*/
private function encryptVersions($filelist) {
$successful = true;
if (\OCP\App::isEnabled('files_versions')) {
foreach ($filelist as $filename) {
$versions = \OCA\Files_Versions\Storage::getVersions($this->userId, $filename);
foreach ($versions as $version) {
$path = '/' . $this->userId . '/files_versions/' . $version['path'] . '.v' . $version['version'];
$encHandle = fopen('crypt://' . $path . '.part', 'wb');
if ($encHandle === false) {
\OCP\Util::writeLog('Encryption library', 'couldn\'t open "' . $path . '", decryption failed!', \OCP\Util::FATAL);
$successful = false;
continue;
}
$plainHandle = $this->view->fopen($path, 'rb');
if ($plainHandle === false) {
\OCP\Util::writeLog('Encryption library', 'couldn\'t open "' . $path . '.part", decryption failed!', \OCP\Util::FATAL);
$successful = false;
continue;
}
stream_copy_to_stream($plainHandle, $encHandle);
fclose($encHandle);
fclose($plainHandle);
$this->view->rename($path . '.part', $path);
}
}
}
return $successful;
}
/**
* @brief decrypt versions from given file
* @param string $filelist list of decrypted files, relative to data/user/files
* @return boolean
*/
private function decryptVersions($filelist) {
$successful = true;
if (\OCP\App::isEnabled('files_versions')) {
foreach ($filelist as $filename) {
$versions = \OCA\Files_Versions\Storage::getVersions($this->userId, $filename);
foreach ($versions as $version) {
$path = '/' . $this->userId . '/files_versions/' . $version['path'] . '.v' . $version['version'];
$encHandle = fopen('crypt://' . $path, 'rb');
if ($encHandle === false) {
\OCP\Util::writeLog('Encryption library', 'couldn\'t open "' . $path . '", decryption failed!', \OCP\Util::FATAL);
$successful = false;
continue;
}
$plainHandle = $this->view->fopen($path . '.part', 'wb');
if ($plainHandle === false) {
\OCP\Util::writeLog('Encryption library', 'couldn\'t open "' . $path . '.part", decryption failed!', \OCP\Util::FATAL);
$successful = false;
continue;
}
stream_copy_to_stream($encHandle, $plainHandle);
fclose($encHandle);
fclose($plainHandle);
$this->view->rename($path . '.part', $path);
}
}
}
return $successful;
}
/**
* @brief Decrypt all files
* @return bool
@ -674,6 +766,11 @@ class Util {
if ($found) {
$versionStatus = \OCP\App::isEnabled('files_versions');
\OC_App::disable('files_versions');
$decryptedFiles[] = array();
// Disable proxy to prevent file being encrypted twice
\OC_FileProxy::$enabled = false;
@ -685,7 +782,7 @@ class Util {
//relative to /data
$rawPath = $encryptedFile['path'];
// Open enc file handle for binary reading
$encHandle = fopen('crypt://' . $rawPath, 'rb');
@ -711,7 +808,6 @@ class Util {
continue;
}
fclose($encHandle);
fclose($plainHandle);
@ -728,8 +824,19 @@ class Util {
'size' => $size,
'unencrypted_size' => $size
));
$decryptedFiles[] = $relPath;
}
if ($versionStatus) {
\OC_App::enable('files_versions');
}
if (!$this->decryptVersions($decryptedFiles)) {
$successful = false;
}
if ($successful) {
$this->view->deleteAll($this->keyfilesPath);
$this->view->deleteAll($this->shareKeysPath);
@ -752,11 +859,16 @@ class Util {
public function encryptAll($dirPath, $legacyPassphrase = null, $newPassphrase = null) {
$found = $this->findEncFiles($dirPath);
if ($found) {
// Disable proxy to prevent file being encrypted twice
\OC_FileProxy::$enabled = false;
$versionStatus = \OCP\App::isEnabled('files_versions');
\OC_App::disable('files_versions');
$encryptedFiles = array();
// Encrypt unencrypted files
foreach ($found['plain'] as $plainFile) {
@ -792,6 +904,9 @@ class Util {
'size' => $size,
'unencrypted_size' => $size
));
$encryptedFiles[] = $relPath;
}
// Encrypt legacy encrypted files
@ -832,6 +947,12 @@ class Util {
\OC_FileProxy::$enabled = true;
if ($versionStatus) {
\OC_App::enable('files_versions');
}
$this->encryptVersions($encryptedFiles);
// If files were found, return true
return true;
} else {