From c7883b1769eb785264abcbf84a363100ff784228 Mon Sep 17 00:00:00 2001
From: Bjoern Schiessle <schiessle@owncloud.com>
Date: Thu, 15 Oct 2015 12:06:49 +0200
Subject: [PATCH 1/2] only wrap source if fopen was successful

---
 lib/private/files/storage/wrapper/encryption.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/private/files/storage/wrapper/encryption.php b/lib/private/files/storage/wrapper/encryption.php
index d6b7f53408..aade7cd8bb 100644
--- a/lib/private/files/storage/wrapper/encryption.php
+++ b/lib/private/files/storage/wrapper/encryption.php
@@ -320,7 +320,7 @@ class Encryption extends Wrapper {
 	 *
 	 * @param string $path
 	 * @param string $mode
-	 * @return resource
+	 * @return resource|bool
 	 * @throws GenericEncryptionException
 	 * @throws ModuleDoesNotExistsException
 	 */
@@ -404,6 +404,9 @@ class Encryption extends Wrapper {
 			if ($shouldEncrypt === true && $encryptionModule !== null) {
 				$headerSize = $this->getHeaderSize($path);
 				$source = $this->storage->fopen($path, $mode);
+				if (!is_resource($source)) {
+					return false;
+				}
 				$handle = \OC\Files\Stream\Encryption::wrap($source, $path, $fullPath, $header,
 					$this->uid, $encryptionModule, $this->storage, $this, $this->util, $this->fileHelper, $mode,
 					$size, $unencryptedSize, $headerSize);

From dd6cb67030a260c94ec00770c966bc66dc24a308 Mon Sep 17 00:00:00 2001
From: Bjoern Schiessle <schiessle@owncloud.com>
Date: Thu, 15 Oct 2015 12:12:52 +0200
Subject: [PATCH 2/2] check if fopen was successful before continue

---
 lib/private/files/storage/wrapper/encryption.php | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/lib/private/files/storage/wrapper/encryption.php b/lib/private/files/storage/wrapper/encryption.php
index aade7cd8bb..2f0c1e35b0 100644
--- a/lib/private/files/storage/wrapper/encryption.php
+++ b/lib/private/files/storage/wrapper/encryption.php
@@ -195,9 +195,13 @@ class Encryption extends Wrapper {
 	public function file_put_contents($path, $data) {
 		// file put content will always be translated to a stream write
 		$handle = $this->fopen($path, 'w');
-		$written = fwrite($handle, $data);
-		fclose($handle);
-		return $written;
+		if (is_resource($handle)) {
+			$written = fwrite($handle, $data);
+			fclose($handle);
+			return $written;
+		}
+
+		return false;
 	}
 
 	/**