From b7d8da87d0b094c5e55a0ac43995074fa3351618 Mon Sep 17 00:00:00 2001
From: Sam Tuke <samtuke@owncloud.com>
Date: Tue, 23 Apr 2013 18:41:01 +0200
Subject: [PATCH] Development snapshot working on stream handling (large files)
 in Util->encryptAll()

---
 apps/files_encryption/lib/keymanager.php |  3 +-
 apps/files_encryption/lib/proxy.php      |  1 -
 apps/files_encryption/lib/util.php       | 50 ++++++++++++------------
 3 files changed, 28 insertions(+), 26 deletions(-)

diff --git a/apps/files_encryption/lib/keymanager.php b/apps/files_encryption/lib/keymanager.php
index 9885f5e5508..0e1dafeed75 100755
--- a/apps/files_encryption/lib/keymanager.php
+++ b/apps/files_encryption/lib/keymanager.php
@@ -106,6 +106,7 @@ class Keymanager {
 	 */
 	public static function setFileKey( \OC_FilesystemView $view, $path, $userId, $catfile ) {
 		
+		$proxyStatus = \OC_FileProxy::$enabled;
 		\OC_FileProxy::$enabled = false;
 
 		//here we need the currently logged in user, while userId can be a different user
@@ -129,7 +130,7 @@ class Keymanager {
 		$result = $view->file_put_contents( $basePath . '/' . $targetPath . '.key', $catfile );
 		
 		
-		\OC_FileProxy::$enabled = true;
+		\OC_FileProxy::$enabled = $proxyStatus;
 		
 		return $result;
 		
diff --git a/apps/files_encryption/lib/proxy.php b/apps/files_encryption/lib/proxy.php
index 0d20ff1af1a..620f7cc8c31 100644
--- a/apps/files_encryption/lib/proxy.php
+++ b/apps/files_encryption/lib/proxy.php
@@ -142,7 +142,6 @@ class Proxy extends \OC_FileProxy {
 				$multiEncrypted = Crypt::multiKeyEncrypt( $plainKey, $publicKeys );
 				
 				// Save sharekeys to user folders
-				
 				Keymanager::setShareKeys( $rootView, $filePath, $multiEncrypted['keys'] );
 				
 				// Set encrypted keyfile as common varname
diff --git a/apps/files_encryption/lib/util.php b/apps/files_encryption/lib/util.php
index 38b4219f6e2..f9198e0606a 100644
--- a/apps/files_encryption/lib/util.php
+++ b/apps/files_encryption/lib/util.php
@@ -500,37 +500,39 @@ class Util {
 		
 			// Encrypt unencrypted files
 			foreach ( $found['plain'] as $plainFile ) {
-			
-				// Open plain file handle
-				
-				
-				// Open enc file handle
-				
-				
-				// Read plain file in chunks
 				
 				//relative to data/<user>/file
 				$relPath = $plainFile['path'];
+				
 				//relative to /data
 				$rawPath = $this->userId . '/files/' .  $plainFile['path'];
-
-				// Open handle with for binary reading
-				$plainHandle = $this->view->fopen( $rawPath, 'rb' );
-				// Open handle with for binary writing
-
-				$encHandle = fopen( 'crypt://' . $relPath . '.tmp', 'wb' );
 				
-				// Overwrite the existing file with the encrypted one
-				//$this->view->file_put_contents( $plainFile['path'], $encrypted['data'] );
-				$size = stream_copy_to_stream( $plainHandle, $encHandle );
-
-				$this->view->rename($rawPath . '.tmp', $rawPath);
-
-				// Fetch the key that has just been set/updated by the stream
-				//$encKey = Keymanager::getFileKey( $this->view, $this->userId, $relPath );
+				// Open plain file handle for binary reading
+				$plainHandle1 = $this->view->fopen( $rawPath, 'rb' );
+				
+				// 2nd handle for moving plain file - view->rename() doesn't work, this is a workaround
+				$plainHandle2 = $this->view->fopen( $rawPath . '.plaintmp', 'wb' );
+				
+				// Move plain file to a temporary location
+				stream_copy_to_stream( $plainHandle1, $plainHandle2 );
+				
+				// Close access to original file
+// 				$this->view->fclose( $plainHandle1 ); // not implemented in view{}
+				
+				// Delete original plain file so we can rename enc file later
+				$this->view->unlink( $rawPath );
+				
+				// Open enc file handle for binary writing, with same filename as original plain file
+				$encHandle = fopen( 'crypt://' . $relPath, 'wb' );
+				
+				// Save data from plain stream to new encrypted file via enc stream
+				// NOTE: Stream{} will be invoked for handling 
+				// the encryption, and should handle all keys 
+				// and their generation etc. automatically
+				$size = stream_copy_to_stream( $plainHandle2, $encHandle );
 				
-				// Save keyfile
-				//Keymanager::setFileKey( $this->view, $relPath, $this->userId, $encKey );
+				// Delete temporary plain copy of file
+				$this->view->unlink( $rawPath . '.plaintmp' );
 				
 				// Add the file to the cache
 				\OC\Files\Filesystem::putFileInfo( $plainFile['path'], array( 'encrypted'=>true, 'size' => $size ), '' );
-- 
2.39.5