From d96146a017bd8f7e4573e4555cea2c198fa9fbad Mon Sep 17 00:00:00 2001
From: Robin Appelman <icewind@owncloud.com>
Date: Sat, 16 Feb 2013 03:27:50 +0100
Subject: [PATCH] Give storage backends the option to define having no known
 free space

When this is the case only the configured max upload size is taking into account for uploading
---
 apps/files/ajax/upload.php                | 2 +-
 apps/files_external/lib/amazons3.php      | 5 -----
 apps/files_external/lib/sftp.php          | 4 ----
 apps/files_external/lib/streamwrapper.php | 4 ----
 apps/files_external/lib/swift.php         | 4 ----
 apps/files_external/lib/webdav.php        | 2 +-
 lib/files/filesystem.php                  | 2 ++
 lib/files/storage/common.php              | 9 +++++++++
 lib/helper.php                            | 8 ++++++--
 9 files changed, 19 insertions(+), 21 deletions(-)

diff --git a/apps/files/ajax/upload.php b/apps/files/ajax/upload.php
index 07977f5ddf..9031c729ef 100644
--- a/apps/files/ajax/upload.php
+++ b/apps/files/ajax/upload.php
@@ -48,7 +48,7 @@ $totalSize = 0;
 foreach ($files['size'] as $size) {
 	$totalSize += $size;
 }
-if ($totalSize > \OC\Files\Filesystem::free_space($dir)) {
+if ($totalSize > $maxUploadFilesize) {
 	OCP\JSON::error(array('data' => array('message' => $l->t('Not enough storage available'),
 		'uploadMaxFilesize' => $maxUploadFilesize,
 		'maxHumanFilesize' => $maxHumanFilesize)));
diff --git a/apps/files_external/lib/amazons3.php b/apps/files_external/lib/amazons3.php
index 494885a1dd..37e53a3a67 100644
--- a/apps/files_external/lib/amazons3.php
+++ b/apps/files_external/lib/amazons3.php
@@ -229,11 +229,6 @@ class AmazonS3 extends \OC\Files\Storage\Common {
 		return false;
 	}
 
-	public function free_space($path) {
-		// Infinite?
-		return false;
-	}
-
 	public function touch($path, $mtime = null) {
 		if (is_null($mtime)) {
 			$mtime = time();
diff --git a/apps/files_external/lib/sftp.php b/apps/files_external/lib/sftp.php
index 551a5a64ef..77c08d3b73 100644
--- a/apps/files_external/lib/sftp.php
+++ b/apps/files_external/lib/sftp.php
@@ -241,10 +241,6 @@ class SFTP extends \OC\Files\Storage\Common {
 		}
 	}
 
-	public function free_space($path) {
-		return -1;
-	}
-
 	public function touch($path, $mtime=null) {
 		try {
 			if (!is_null($mtime)) return false;
diff --git a/apps/files_external/lib/streamwrapper.php b/apps/files_external/lib/streamwrapper.php
index a631e7ce06..4685877f26 100644
--- a/apps/files_external/lib/streamwrapper.php
+++ b/apps/files_external/lib/streamwrapper.php
@@ -76,10 +76,6 @@ abstract class StreamWrapper extends \OC\Files\Storage\Common{
 		return fopen($this->constructUrl($path), $mode);
 	}
 
-	public function free_space($path) {
-		return 0;
-	}
-
 	public function touch($path, $mtime=null) {
 		$this->init();
 		if(is_null($mtime)) {
diff --git a/apps/files_external/lib/swift.php b/apps/files_external/lib/swift.php
index 0fd6fa143b..a00316c1f8 100644
--- a/apps/files_external/lib/swift.php
+++ b/apps/files_external/lib/swift.php
@@ -478,10 +478,6 @@ class SWIFT extends \OC\Files\Storage\Common{
 		}
 	}
 
-	public function free_space($path) {
-		return 1024*1024*1024*8;
-	}
-
 	public function touch($path, $mtime=null) {
 		$this->init();
 		$obj=$this->getObject($path);
diff --git a/apps/files_external/lib/webdav.php b/apps/files_external/lib/webdav.php
index 039a07b1ef..91cc22779e 100644
--- a/apps/files_external/lib/webdav.php
+++ b/apps/files_external/lib/webdav.php
@@ -222,7 +222,7 @@ class DAV extends \OC\Files\Storage\Common{
 				return 0;
 			}
 		} catch(\Exception $e) {
-			return 0;
+			return \OC\Files\FREE_SPACE_UNKNOWN;
 		}
 	}
 
diff --git a/lib/files/filesystem.php b/lib/files/filesystem.php
index f453086807..0dafef836b 100644
--- a/lib/files/filesystem.php
+++ b/lib/files/filesystem.php
@@ -29,6 +29,8 @@
 
 namespace OC\Files;
 
+const FREE_SPACE_UNKNOWN = -2;
+
 class Filesystem {
 	public static $loaded = false;
 	/**
diff --git a/lib/files/storage/common.php b/lib/files/storage/common.php
index 4cdabf1c8a..4e7a73e5d4 100644
--- a/lib/files/storage/common.php
+++ b/lib/files/storage/common.php
@@ -301,4 +301,13 @@ abstract class Common implements \OC\Files\Storage\Storage {
 		}
 		return implode('/', $output);
 	}
+
+	/**
+	 * get the free space in the storage
+	 * @param $path
+	 * return int
+	 */
+	public function free_space($path){
+		return \OC\Files\FREE_SPACE_UNKNOWN;
+	}
 }
diff --git a/lib/helper.php b/lib/helper.php
index 0f810ffc0c..add5c66e7b 100644
--- a/lib/helper.php
+++ b/lib/helper.php
@@ -762,9 +762,13 @@ class OC_Helper {
 		$maxUploadFilesize = min($upload_max_filesize, $post_max_size);
 
 		$freeSpace = \OC\Files\Filesystem::free_space($dir);
-		$freeSpace = max($freeSpace, 0);
+		if($freeSpace !== \OC\Files\FREE_SPACE_UNKNOWN){
+			$freeSpace = max($freeSpace, 0);
 
-		return min($maxUploadFilesize, $freeSpace);
+			return min($maxUploadFilesize, $freeSpace);
+		} else {
+			return $maxUploadFilesize;
+		}
 	}
 
 	/**