From 968de70bc57f6c5a88c2c688e1c466d419538709 Mon Sep 17 00:00:00 2001
From: Robin Appelman <robin@icewind.nl>
Date: Wed, 4 Jan 2017 15:13:02 +0100
Subject: [PATCH] remove the need to register the quota streamwrapper globally

Signed-off-by: Robin Appelman <robin@icewind.nl>
---
 lib/base.php                         |  1 -
 lib/private/Files/Stream/Quota.php   | 94 ++++++----------------------
 tests/lib/Files/Stream/QuotaTest.php |  5 +-
 3 files changed, 21 insertions(+), 79 deletions(-)

diff --git a/lib/base.php b/lib/base.php
index 3ab41f3759..38b07f1b30 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -669,7 +669,6 @@ class OC {
 		// register the stream wrappers
 		stream_wrapper_register('static', 'OC\Files\Stream\StaticStream');
 		stream_wrapper_register('close', 'OC\Files\Stream\Close');
-		stream_wrapper_register('quota', 'OC\Files\Stream\Quota');
 
 		\OC::$server->getEventLogger()->start('init_session', 'Initialize session');
 		OC_App::loadApps(array('session'));
diff --git a/lib/private/Files/Stream/Quota.php b/lib/private/Files/Stream/Quota.php
index f064ca6c01..624a2021b9 100644
--- a/lib/private/Files/Stream/Quota.php
+++ b/lib/private/Files/Stream/Quota.php
@@ -25,61 +25,44 @@
 
 namespace OC\Files\Stream;
 
+use Icewind\Streams\Wrapper;
+
 /**
  * stream wrapper limits the amount of data that can be written to a stream
  *
- * usage: void \OC\Files\Stream\Quota::register($id, $stream, $limit)
- * or:    resource \OC\Files\Stream\Quota::wrap($stream, $limit)
+ * usage: resource \OC\Files\Stream\Quota::wrap($stream, $limit)
  */
-class Quota {
-	private static $streams = array();
-
-	/**
-	 * @var resource $source
-	 */
-	private $source;
-
+class Quota extends Wrapper {
 	/**
 	 * @var int $limit
 	 */
 	private $limit;
 
-	/**
-	 * @param string $id
-	 * @param resource $stream
-	 * @param int $limit
-	 */
-	public static function register($id, $stream, $limit) {
-		self::$streams[$id] = array($stream, $limit);
-	}
-
-	/**
-	 * remove all registered streams
-	 */
-	public static function clear() {
-		self::$streams = array();
-	}
-
 	/**
 	 * @param resource $stream
 	 * @param int $limit
 	 * @return resource
 	 */
 	static public function wrap($stream, $limit) {
-		$id = uniqid();
-		self::register($id, $stream, $limit);
-		$meta = stream_get_meta_data($stream);
-		return fopen('quota://' . $id, $meta['mode']);
+		$context = stream_context_create(array(
+			'quota' => array(
+				'source' => $stream,
+				'limit' => $limit
+			)
+		));
+		return Wrapper::wrapSource($stream, $context, 'quota', self::class);
 	}
 
 	public function stream_open($path, $mode, $options, &$opened_path) {
-		$id = substr($path, strlen('quota://'));
-		if (isset(self::$streams[$id])) {
-			list($this->source, $this->limit) = self::$streams[$id];
-			return true;
-		} else {
-			return false;
-		}
+		$context = $this->loadContext('quota');
+		$this->source = $context['source'];
+		$this->limit = $context['limit'];
+
+		return true;
+	}
+
+	public function dir_opendir($path, $options) {
+		return false;
 	}
 
 	public function stream_seek($offset, $whence = SEEK_SET) {
@@ -103,10 +86,6 @@ class Quota {
 		return fseek($this->source, $offset, $whence) === 0;
 	}
 
-	public function stream_tell() {
-		return ftell($this->source);
-	}
-
 	public function stream_read($count) {
 		$this->limit -= $count;
 		return fread($this->source, $count);
@@ -121,37 +100,4 @@ class Quota {
 		$this->limit -= $size;
 		return fwrite($this->source, $data);
 	}
-
-	public function stream_set_option($option, $arg1, $arg2) {
-		switch ($option) {
-			case STREAM_OPTION_BLOCKING:
-				stream_set_blocking($this->source, $arg1);
-				break;
-			case STREAM_OPTION_READ_TIMEOUT:
-				stream_set_timeout($this->source, $arg1, $arg2);
-				break;
-			case STREAM_OPTION_WRITE_BUFFER:
-				stream_set_write_buffer($this->source, $arg1, $arg2);
-		}
-	}
-
-	public function stream_stat() {
-		return fstat($this->source);
-	}
-
-	public function stream_lock($mode) {
-		return flock($this->source, $mode);
-	}
-
-	public function stream_flush() {
-		return fflush($this->source);
-	}
-
-	public function stream_eof() {
-		return feof($this->source);
-	}
-
-	public function stream_close() {
-		fclose($this->source);
-	}
 }
diff --git a/tests/lib/Files/Stream/QuotaTest.php b/tests/lib/Files/Stream/QuotaTest.php
index d084f0c769..24b0e7f947 100644
--- a/tests/lib/Files/Stream/QuotaTest.php
+++ b/tests/lib/Files/Stream/QuotaTest.php
@@ -9,14 +9,11 @@
 namespace Test\Files\Stream;
 
 class QuotaTest extends \Test\TestCase {
-	protected function tearDown() {
-		\OC\Files\Stream\Quota::clear();
-		parent::tearDown();
-	}
 
 	/**
 	 * @param string $mode
 	 * @param integer $limit
+	 * @return resource
 	 */
 	protected function getStream($mode, $limit) {
 		$source = fopen('php://temp', $mode);