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<?php
/**
* Copyright (c) 2013, Sam Tuke <samtuke@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or later.
* See the COPYING-README file.
*
* @brief Script to handle admin settings for encrypted key recovery
*/
use OCA\Encryption;
\OCP\JSON::checkAdminUser();
\OCP\JSON::checkAppEnabled('files_encryption');
\OCP\JSON::callCheck();
$return = false;
function checkPassword($view, $password, $recoveryKeyId) {
$pathKey = '/owncloud_private_key/'. $recoveryKeyId . ".private.key";
$pathControlData = '/control-file/controlfile.enc';
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$recoveryKey = $view->file_get_contents( $pathKey );
$decryptedRecoveryKey = \OCA\Encryption\Crypt::symmetricDecryptFileContent($recoveryKey, $password);
$controlData = $view->file_get_contents($pathControlData);
$decryptedControlData = \OCA\Encryption\Crypt::keyDecrypt($controlData, $decryptedRecoveryKey);
\OC_FileProxy::$enabled = $proxyStatus;
if ($decryptedControlData === 'ownCloud') {
return true;
} else {
return false;
}
}
// Enable recoveryAdmin
$recoveryKeyId = OC_Appconfig::getValue('files_encryption', 'recoveryKeyId');
if (isset($_POST['adminEnableRecovery']) && $_POST['adminEnableRecovery'] == 1){
$view = new \OC\Files\View('/');
if ($recoveryKeyId === null) {
$recoveryKeyId = 'recovery_' . substr(md5(time()), 0, 8);
\OC_Appconfig::setValue('files_encryption', 'recoveryKeyId', $recoveryKeyId);
}
if (!$view->is_dir('/owncloud_private_key')) {
$view->mkdir('/owncloud_private_key');
}
if (
(!$view->file_exists("/public-keys/" . $recoveryKeyId . ".public.key")
|| !$view->file_exists("/owncloud_private_key/" . $recoveryKeyId . ".private.key"))
) {
$keypair = \OCA\Encryption\Crypt::createKeypair();
\OC_FileProxy::$enabled = false;
// Save public key
if (!$view->is_dir('/public-keys')) {
$view->mkdir('/public-keys');
}
$view->file_put_contents('/public-keys/' . $recoveryKeyId . '.public.key', $keypair['publicKey']);
// Encrypt private key empthy passphrase
$encryptedPrivateKey = \OCA\Encryption\Crypt::symmetricEncryptFileContent($keypair['privateKey'], $_POST['recoveryPassword']);
// Save private key
$view->file_put_contents('/owncloud_private_key/' . $recoveryKeyId . '.private.key', $encryptedPrivateKey);
// create control file which let us check later on if the entered password was correct.
$encryptedControlData = \OCA\Encryption\Crypt::keyEncrypt("ownCloud", $keypair['publicKey']);
if (!$view->is_dir('/control-file')) {
$view->mkdir('/control-file');
}
$view->file_put_contents('/control-file/controlfile.enc', $encryptedControlData);
\OC_FileProxy::$enabled = true;
// Set recoveryAdmin as enabled
OC_Appconfig::setValue('files_encryption', 'recoveryAdminEnabled', 1);
$return = true;
} else { // get recovery key and check the password
$return = checkPassword($view, $_POST['recoveryPassword'] ,$recoveryKeyId);
if ($return) {
OC_Appconfig::setValue('files_encryption', 'recoveryAdminEnabled', 1);
}
}
// Disable recoveryAdmin
} elseif (
isset($_POST['adminEnableRecovery'])
&& 0 == $_POST['adminEnableRecovery']
) {
$view = new \OC\Files\View('/');
$return = checkPassword($view, $_POST['recoveryPassword'], $recoveryKeyId);
if ($return) {
// Set recoveryAdmin as disabled
OC_Appconfig::setValue('files_encryption', 'recoveryAdminEnabled', 0);
}
}
// Return success or failure
( $return ) ? \OCP\JSON::success() : \OCP\JSON::error();
|
