From 67ba9b320ee37c3a89614f3241550c3a0176202a Mon Sep 17 00:00:00 2001
From: Robin Appelman <icewind1991@gmail.com>
Date: Mon, 18 Apr 2011 12:16:47 +0200
Subject: [PATCH] seperate hooks for OC_FILESYSTEM and OC_FILESTORAGE

---
 lib/base.php        |  1 -
 lib/filestorage.php | 56 ++++++++++++++++++++++++++-------------------
 lib/filesystem.php  | 53 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 86 insertions(+), 24 deletions(-)

diff --git a/lib/base.php b/lib/base.php
index 352474e1e83..15f849ce476 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -80,7 +80,6 @@ require_once('appconfig.php');
 require_once('files.php');
 require_once('filesystem.php');
 require_once('filestorage.php');
-require_once('fileobserver.php');
 require_once('log.php');
 require_once('user.php');
 require_once('group.php');
diff --git a/lib/filestorage.php b/lib/filestorage.php
index c20d6d7b3e0..576a6dbdf34 100644
--- a/lib/filestorage.php
+++ b/lib/filestorage.php
@@ -24,11 +24,11 @@
  * Privde a common interface to all different storage options
  * 
  * Hooks provided:
- *   read(path)
- *   write(path)
- *   create(path)
- *   delete(path)
- *   rename(oldpath,newpath)
+ *   read(storage,path)
+ *   write(storage,path)
+ *   create(storage,path) (when a file is created both, write and create will be emited)
+ *   delete(storage,path)
+ *   rename(storage,oldpath,newpath)
  */
 class OC_FILESTORAGE{
 	public function __construct($parameters){}
@@ -85,14 +85,14 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 	}
 	public function rmdir($path){
 		if($return=rmdir($this->datadir.$path)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "delete", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "delete", array( 'storage'=>$this, 'path' => $path));
 			$this->clearFolderSizeCache($path);
 		}
 		return $return;
 	}
 	public function opendir($path){
 		if($return=opendir($this->datadir.$path)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "read", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "read", array( 'storage'=>$this, 'path' => $path));
 		}
 		return $return;
 	}
@@ -130,7 +130,7 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 	}
 	public function readfile($path){
 		if($return=readfile($this->datadir.$path)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "read", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "read", array( 'storage'=>$this, 'path' => $path));
 		}
 		return $return;
 	}
@@ -145,26 +145,29 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 	}
 	public function file_get_contents($path){
 		if($return=file_get_contents($this->datadir.$path)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "read", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "read", array( 'storage'=>$this, 'path' => $path));
 		}
 		return $return;
 	}
 	public function file_put_contents($path,$data){
+		if(!$this->file_exists($path)){
+			OC_HOOK::emit( 'OC_FILESTORAGE', 'create', array( 'storage'=>$this, 'path' => $path));
+		}
 		if($return=file_put_contents($this->datadir.$path,$data)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "write", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "write", array( 'storage'=>$this, 'path' => $path));
 			$this->clearFolderSizeCache($path);
 		}
 	}
 	public function unlink($path){
 		if($return=unlink($this->datadir.$path)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "delete", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "delete", array( 'storage'=>$this, 'path' => $path));
 			$this->clearFolderSizeCache($path);
 		}
 		return $return;
 	}
 	public function rename($path1,$path2){
 		if($return=rename($this->datadir.$path1,$this->datadir.$path2)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "rename", array( 'oldpath' => $path1, 'newpath' => $path2));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "rename", array( 'storage'=>$this, 'oldpath' => $path1, 'newpath' => $path2));
 		}
 		return $return;
 	}
@@ -177,29 +180,36 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 			$path2.=$source;
 		}
 		if($return=copy($this->datadir.$path1,$this->datadir.$path2)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "create", array( 'path' => $path2));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "create", array( 'storage'=>$this, 'path' => $path2));
 			$this->clearFolderSizeCache($path);
 		}
 		return $return;
 	}
 	public function fopen($path,$mode){
+		$exists=$this->file_exists($path);
 		if($return=fopen($this->datadir.$path,$mode)){
 			switch($mode){
 				case 'r':
-					OC_HOOK::emit( "OC_FILESYSTEM", "read", array( 'path' => $path));
+					OC_HOOK::emit( 'OC_FILESTORAGE', "read", array( 'storage'=>$this, 'path' => $path));
 					break;
 				case 'r+':
 				case 'w+':
 				case 'x+':
 				case 'a+':
-					OC_HOOK::emit( "OC_FILESYSTEM", "read", array( 'path' => $path));
-					OC_HOOK::emit( "OC_FILESYSTEM", "write", array( 'path' => $path));
+					OC_HOOK::emit( 'OC_FILESTORAGE', "read", array( 'storage'=>$this, 'path' => $path));
+					OC_HOOK::emit( 'OC_FILESTORAGE', "write", array( 'storage'=>$this, 'path' => $path));
+					if(!$exists($path)){
+						OC_HOOK::emit( 'OC_FILESTORAGE', 'create', array( 'storage'=>$this, 'path' => $path));
+					}
 					$this->clearFolderSizeCache($path);
 					break;
 				case 'w':
 				case 'x':
 				case 'a':
-					OC_HOOK::emit( "OC_FILESYSTEM", "write", array( 'path' => $path));
+					OC_HOOK::emit( 'OC_FILESTORAGE', "write", array( 'storage'=>$this, 'path' => $path));
+					if(!$exists($path)){
+						OC_HOOK::emit( 'OC_FILESTORAGE', 'create', array( 'storage'=>$this, 'path' => $path));
+					}
 					$this->clearFolderSizeCache($path);
 					break;
 			}
@@ -362,7 +372,7 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 		$fileStats = stat($this->datadir.$path);
 		if(copy($this->datadir.$path,$filename)){
 			touch($filename, $fileStats['mtime'], $fileStats['atime']);
-			OC_HOOK::emit( "OC_FILESYSTEM", "read", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "read", array( 'storage'=>$this, 'path' => $path));
 			return $filename;
 		}else{
 			return false;
@@ -373,7 +383,7 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 		$fileStats = stat($tmpFile);
 		if(rename($tmpFile,$this->datadir.$path)){
 			touch($this->datadir.$path, $fileStats['mtime'], $fileStats['atime']);
-			OC_HOOK::emit( "OC_FILESYSTEM", "create", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "create", array( 'storage'=>$this, 'path' => $path));
 			$this->clearFolderSizeCache($path);
 			return true;
 		}else{
@@ -385,7 +395,7 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 		$fileStats = stat($tmpFile);
 		if(move_uploaded_file($tmpFile,$this->datadir.$path)){
 			touch($this->datadir.$path, $fileStats['mtime'], $fileStats['atime']);
-			OC_HOOK::emit( "OC_FILESYSTEM", "create", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "create", array( 'storage'=>$this, 'path' => $path));
 			$this->clearFolderSizeCache($path);
 			return true;
 		}else{
@@ -402,7 +412,7 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 			if ($item == '.' || $item == '..') continue;
 			if(is_file($dir.'/'.$item)){
 				if(unlink($dir.'/'.$item)){
-					OC_HOOK::emit( "OC_FILESYSTEM", "delete", array( 'path' => $dir.'/'.$item));
+					OC_HOOK::emit( 'OC_FILESTORAGE', "delete", array( 'storage'=>$this, 'path' => $dir.'/'.$item));
 					$this->clearFolderSizeCache($path);
 				}
 			}elseif(is_dir($dir.'/'.$item)){
@@ -412,7 +422,7 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 			}
 		}
 		if($return=rmdir($dir)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "delete", array( 'path' => $dir));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "delete", array( 'storage'=>$this, 'path' => $dir));
 			$this->clearFolderSizeCache($path);
 		}
 		return $return;
@@ -450,7 +460,7 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 
 	public function hash($type,$path,$raw){
 		if($return=hash_file($type,$this->datadir.$path,$raw)){
-			OC_HOOK::emit( "OC_FILESYSTEM", "read", array( 'path' => $path));
+			OC_HOOK::emit( 'OC_FILESTORAGE', "read", array( 'storage'=>$this, 'path' => $path));
 		}
 		return $return;
 	}
diff --git a/lib/filesystem.php b/lib/filesystem.php
index 033f50e2aba..ca4d1a2c474 100644
--- a/lib/filesystem.php
+++ b/lib/filesystem.php
@@ -26,6 +26,13 @@
  * Class for abstraction of filesystem functions
  * This class won't call any filesystem functions for itself but but will pass them to the correct OC_FILESTORAGE object
  * this class should also handle all the file premission related stuff
+ *
+ * Hooks provided:
+ *   read(path)
+ *   write(path)
+ *   create(path) (when a file is created both, write and create will be emited)
+ *   delete(path)
+ *   rename(oldpath,newpath)
  */
 class OC_FILESYSTEM{
 	static private $storages=array();
@@ -191,16 +198,19 @@ class OC_FILESYSTEM{
 	static public function mkdir($path){
 		$parent=substr($path,0,strrpos($path,'/'));
 		if(self::canWrite($parent) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
 			return $storage->mkdir(self::getInternalPath($path));
 		}
 	}
 	static public function rmdir($path){
 		if(self::canWrite($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path));
 			return $storage->rmdir(self::getInternalPath($path));
 		}
 	}
 	static public function opendir($path){
 		if(self::canRead($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
 			return $storage->opendir(self::getInternalPath($path));
 		}
 	}
@@ -237,6 +247,7 @@ class OC_FILESYSTEM{
 	}
 	static public function readfile($path){
 		if(self::canRead($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
 			return $storage->readfile(self::getInternalPath($path));
 		}
 	}
@@ -278,16 +289,22 @@ class OC_FILESYSTEM{
 	}
 	static public function file_get_contents($path){
 		if(self::canRead($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
 			return $storage->file_get_contents(self::getInternalPath($path));
 		}
 	}
 	static public function file_put_contents($path,$data){
 		if(self::canWrite($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path));
+			if(!self::file_exists($path)){
+				OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
+			}
 			return $storage->file_put_contents(self::getInternalPath($path),$data);
 		}
 	}
 	static public function unlink($path){
 		if(self::canWrite($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path));
 			return $storage->unlink(self::getInternalPath($path));
 		}
 	}
@@ -305,6 +322,7 @@ class OC_FILESYSTEM{
 				$storage1->unlink(self::getInternalPath($path1));
 				return $result;
 			}
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'rename', array( 'oldpath' => $path1 ,'newpath'=>$path2));
 		}
 	}
 	static public function copy($path1,$path2){
@@ -319,28 +337,61 @@ class OC_FILESYSTEM{
 				$tmpFile=$storage1->toTmpFile(self::getInternalPath($path1));
 				return $storage2->fromTmpFile(self::getInternalPath($path2));
 			}
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path2));
 		}
 	}
 	static public function fopen($path,$mode){
 		$allowed=((strpos($path,'r')===false and strpos($path,'r+')!==false and self::canRead) or self::canWrite($path));
 		if($allowed){
 			if($storage=self::getStorage($path)){
+				switch($mode){
+					case 'r':
+						OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
+						break;
+					case 'r+':
+					case 'w+':
+					case 'x+':
+					case 'a+':
+						OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
+						OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path));
+						if(!self::file_exists($path)){
+							OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
+						}
+						break;
+					case 'w':
+					case 'x':
+					case 'a':
+						OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path));
+						if(!self::file_exists($path)){
+							OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
+						}
+						break;
+				}
 				return $storage->fopen(self::getInternalPath($path),$mode);
 			}
 		}
 	}
 	static public function toTmpFile($path){
 		if(self::canRead($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
 			return $storage->toTmpFile(self::getInternalPath($path));
 		}
 	}
 	static public function fromTmpFile($tmpFile,$path){
 		if(self::canWrite($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path));
+			if(!self::file_exists($path)){
+				OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
+			}
 			return $storage->fromTmpFile($tmpFile,self::getInternalPath($path));
 		}
 	}
 	static public function fromUploadedFile($tmpFile,$path){
 		if(self::canWrite($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path));
+			if(!self::file_exists($path)){
+				OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
+			}
 			return $storage->fromUploadedFile($tmpFile,self::getInternalPath($path));
 		}
 	}
@@ -351,6 +402,7 @@ class OC_FILESYSTEM{
 	}
 	static public function delTree($path){
 		if(self::canWrite($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path));
 			return $storage->delTree(self::getInternalPath($path));
 		}
 	}
@@ -383,6 +435,7 @@ class OC_FILESYSTEM{
 	}
 	static public function hash($type,$path,$raw=false){
 		if(self::canRead($path) and $storage=self::getStorage($path)){
+			OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
 			return $storage->hash($type,self::getInternalPath($path),$raw);
 		}
 	}
-- 
2.39.5