diff options
Diffstat (limited to 'apps/files_encryption/hooks/hooks.php')
| -rw-r--r-- | apps/files_encryption/hooks/hooks.php | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/apps/files_encryption/hooks/hooks.php b/apps/files_encryption/hooks/hooks.php new file mode 100644 index 00000000000..59bf4921913 --- /dev/null +++ b/apps/files_encryption/hooks/hooks.php @@ -0,0 +1,150 @@ +<?php
+/**
+ * ownCloud
+ *
+ * @author Sam Tuke
+ * @copyright 2012 Sam Tuke samtuke@owncloud.org
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Encryption;
+
+/**
+ * Class for hook specific logic
+ */
+
+class Hooks {
+
+ # TODO: use passphrase for encrypting private key that is separate to the login password
+
+ /**
+ * @brief Startup encryption backend upon user login
+ * @note This method should never be called for users using client side encryption
+ */
+ public static function login( $params ) {
+
+// if ( Crypt::mode( $params['uid'] ) == 'server' ) {
+
+ # TODO: use lots of dependency injection here
+
+ $view = new \OC_FilesystemView( '/' );
+
+ $util = new Util( $view, $params['uid'] );
+
+ if ( ! $util->ready() ) {
+
+ \OC_Log::write( 'Encryption library', 'User account "' . $params['uid'] . '" is not ready for encryption; configuration started' , \OC_Log::DEBUG );
+
+ return $util->setupServerSide( $params['password'] );
+
+ }
+
+ \OC_FileProxy::$enabled = false;
+
+ $encryptedKey = Keymanager::getPrivateKey( $view, $params['uid'] );
+
+ \OC_FileProxy::$enabled = true;
+
+ # TODO: dont manually encrypt the private keyfile - use the config options of openssl_pkey_export instead for better mobile compatibility
+
+ //trigger_error( "\$encryptedKey = ".var_export($encryptedKey)." \n\n\$params['password'] = ".var_export($params['password'] ) );
+
+// trigger_error( "\$params['password'] = {$params['password']}" );
+
+ $privateKey = Crypt::symmetricDecryptFileContent( $encryptedKey, $params['password'] );
+
+ $session = new Session();
+
+ $session->setPrivateKey( $privateKey, $params['uid'] );
+
+ $view1 = new \OC_FilesystemView( '/' . $params['uid'] );
+
+ // Set legacy encryption key if it exists, to support
+ // depreciated encryption system
+ if (
+ $view1->file_exists( 'encryption.key' )
+ && $legacyKey = $view1->file_get_contents( 'encryption.key' )
+ ) {
+
+ $_SESSION['legacyenckey'] = Crypt::legacyDecrypt( $legacyKey, $params['password'] );
+// trigger_error('leg enc key = '.$_SESSION['legacyenckey']);
+
+ }
+// }
+
+ return true;
+
+ }
+
+ /**
+ * @brief Change a user's encryption passphrase
+ * @param array $params keys: uid, password
+ */
+ public static function setPassphrase( $params ) {
+
+ // Only attempt to change passphrase if server-side encryption
+ // is in use (client-side encryption does not have access to
+ // the necessary keys)
+ if ( Crypt::mode() == 'server' ) {
+
+ // Get existing decrypted private key
+ $privateKey = $_SESSION['privateKey'];
+
+ trigger_error( "\$privateKey = ". var_export($privateKey, 1));
+
+ // Encrypt private key with new user pwd as passphrase
+ $encryptedPrivateKey = Crypt::symmetricEncryptFileContent( $privateKey, $params['password'] );
+
+ // Save private key
+ Keymanager::setPrivateKey( $encryptedPrivateKey );
+
+ # NOTE: Session does not need to be updated as the
+ # private key has not changed, only the passphrase
+ # used to decrypt it has changed
+
+ }
+
+ }
+
+ /**
+ * @brief update the encryption key of the file uploaded by the client
+ */
+ public static function updateKeyfile( $params ) {
+
+ if ( Crypt::mode() == 'client' ) {
+
+ if ( isset( $params['properties']['key'] ) ) {
+
+ Keymanager::setFileKey( $params['path'], $params['properties']['key'] );
+
+ } else {
+
+ \OC_Log::write(
+ 'Encryption library', "Client side encryption is enabled but the client doesn't provide a encryption key for the file!"
+ , \OC_Log::ERROR
+ );
+
+ error_log( "Client side encryption is enabled but the client doesn't provide an encryption key for the file!" );
+
+ }
+
+ }
+
+ }
+
+}
+
+?>
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