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allow plugins to cancel filesystem operations using the provided hooks

This commit is contained in:
Robin Appelman 2011-06-16 22:44:16 +02:00
parent 3062723c34
commit 300b8c06cf
1 changed files with 104 additions and 50 deletions
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154
lib/filesystem.php
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@ -29,10 +29,13 @@
* *
* Hooks provided: * Hooks provided:
* read(path) * read(path)
* write(path) * write(path, &run)
* create(path) (when a file is created both, write and create will be emited) * create(path, &run) (when a file is created, both create and write will be emited in that order)
* delete(path) * delete(path, &run)
* rename(oldpath,newpath) * rename(oldpath,newpath, &run)
* copy(oldpath,newpath, &run) (if the newpath doesn't exists yes, copy, create and write will be emited in that order)
*
* the &run parameter can be set to false to prevent the operation from occuring
*/ */
class OC_FILESYSTEM{ class OC_FILESYSTEM{
static private $storages=array(); static private $storages=array();
@ -222,14 +225,23 @@ class OC_FILESYSTEM{
static public function mkdir($path){ static public function mkdir($path){
$parent=substr($path,0,strrpos($path,'/')); $parent=substr($path,0,strrpos($path,'/'));
if(self::canWrite($parent) and $storage=self::getStorage($path)){ if(self::canWrite($parent) and $storage=self::getStorage($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path)); $run=true;
return $storage->mkdir(self::getInternalPath($path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path, 'run' => &$run));
if($run){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path, 'run' => &$run));
}
if($run){
return $storage->mkdir(self::getInternalPath($path));
}
} }
} }
static public function rmdir($path){ static public function rmdir($path){
if(self::canWrite($path) and $storage=self::getStorage($path)){ if(self::canWrite($path) and $storage=self::getStorage($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path)); $run=true;
return $storage->rmdir(self::getInternalPath($path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path, 'run' => &$run));
if($run){
return $storage->rmdir(self::getInternalPath($path));
}
} }
} }
static public function opendir($path){ static public function opendir($path){
@ -319,55 +331,76 @@ class OC_FILESYSTEM{
} }
static public function file_put_contents($path,$data){ static public function file_put_contents($path,$data){
if(self::canWrite($path) and $storage=self::getStorage($path)){ if(self::canWrite($path) and $storage=self::getStorage($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path)); $run=true;
if(!self::file_exists($path)){ if(!self::file_exists($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path, 'run' => &$run));
}
if($run){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path, 'run' => &$run));
}
if($run){
return $storage->file_put_contents(self::getInternalPath($path),$data);
} }
return $storage->file_put_contents(self::getInternalPath($path),$data);
} }
} }
static public function unlink($path){ static public function unlink($path){
if(self::canWrite($path) and $storage=self::getStorage($path)){ if(self::canWrite($path) and $storage=self::getStorage($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path)); $run=true;
return $storage->unlink(self::getInternalPath($path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path, 'run' => &$run));
if($run){
return $storage->unlink(self::getInternalPath($path));
}
} }
} }
static public function rename($path1,$path2){ static public function rename($path1,$path2){
if(self::canWrite($path1) and self::canWrite($path2)){ if(self::canWrite($path1) and self::canWrite($path2)){
$mp1=self::getMountPoint($path1); $run=true;
$mp2=self::getMountPoint($path2); OC_HOOK::emit( 'OC_FILESYSTEM', 'rename', array( 'oldpath' => $path1 ,'newpath'=>$path2, 'run' => &$run));
if($mp1==$mp2){ if($run){
if($storage=self::getStorage($path1)){ $mp1=self::getMountPoint($path1);
return $storage->rename(self::getInternalPath($path1),self::getInternalPath($path2)); $mp2=self::getMountPoint($path2);
if($mp1==$mp2){
if($storage=self::getStorage($path1)){
return $storage->rename(self::getInternalPath($path1),self::getInternalPath($path2));
}
}elseif($storage1=self::getStorage($path1) and $storage2=self::getStorage($path2)){
$tmpFile=$storage1->toTmpFile(self::getInternalPath($path1));
$result=$storage2->fromTmpFile(self::getInternalPath($path2));
$storage1->unlink(self::getInternalPath($path1));
return $result;
} }
}elseif($storage1=self::getStorage($path1) and $storage2=self::getStorage($path2)){
$tmpFile=$storage1->toTmpFile(self::getInternalPath($path1));
$result=$storage2->fromTmpFile(self::getInternalPath($path2));
$storage1->unlink(self::getInternalPath($path1));
return $result;
} }
OC_HOOK::emit( 'OC_FILESYSTEM', 'rename', array( 'oldpath' => $path1 ,'newpath'=>$path2));
} }
} }
static public function copy($path1,$path2){ static public function copy($path1,$path2){
if(self::canRead($path1) and self::canWrite($path2)){ if(self::canRead($path1) and self::canWrite($path2)){
$mp1=self::getMountPoint($path1); $run=true;
$mp2=self::getMountPoint($path2); OC_HOOK::emit( 'OC_FILESYSTEM', 'copy', array( 'oldpath' => $path1 ,'newpath'=>$path2, 'run' => &$run));
if($mp1==$mp2){ if($run and !self::file_exists($path2)){
if($storage=self::getStorage($path1)){ OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path2, 'run' => &$run));
return $storage->copy(self::getInternalPath($path1),self::getInternalPath($path2)); }
} if($run){
}elseif($storage1=self::getStorage($path1) and $storage2=self::getStorage($path2)){ OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path2, 'run' => &$run));
$tmpFile=$storage1->toTmpFile(self::getInternalPath($path1)); }
return $storage2->fromTmpFile(self::getInternalPath($path2)); if($run){
$mp1=self::getMountPoint($path1);
$mp2=self::getMountPoint($path2);
if($mp1==$mp2){
if($storage=self::getStorage($path1)){
return $storage->copy(self::getInternalPath($path1),self::getInternalPath($path2));
}
}elseif($storage1=self::getStorage($path1) and $storage2=self::getStorage($path2)){
$tmpFile=$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,$mode){ static public function fopen($path,$mode){
$allowed=((strpos($path,'r')===false and strpos($path,'r+')!==false and self::canRead) or self::canWrite($path)); $allowed=((strpos($path,'r')===false and strpos($path,'r+')!==false and self::canRead) or self::canWrite($path));
if($allowed){ if($allowed){
if($storage=self::getStorage($path)){ if($storage=self::getStorage($path)){
$run=true;
switch($mode){ switch($mode){
case 'r': case 'r':
OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
@ -377,21 +410,27 @@ class OC_FILESYSTEM{
case 'x+': case 'x+':
case 'a+': case 'a+':
OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'read', array( 'path' => $path));
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path));
if(!self::file_exists($path)){ if(!self::file_exists($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
} }
if($run){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path, 'run' => &$run));
}
break; break;
case 'w': case 'w':
case 'x': case 'x':
case 'a': case 'a':
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path));
if(!self::file_exists($path)){ if(!self::file_exists($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path));
} }
if($run){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path, 'run' => &$run));
}
break; break;
} }
return $storage->fopen(self::getInternalPath($path),$mode); if($run){
return $storage->fopen(self::getInternalPath($path),$mode);
}
} }
} }
} }
@ -403,20 +442,30 @@ class OC_FILESYSTEM{
} }
static public function fromTmpFile($tmpFile,$path){ static public function fromTmpFile($tmpFile,$path){
if(self::canWrite($path) and $storage=self::getStorage($path)){ if(self::canWrite($path) and $storage=self::getStorage($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path)); $run=true;
if(!self::file_exists($path)){ if(!self::file_exists($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path, 'run' => &$run));
}
if($run){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path, 'run' => &$run));
}
if($run){
return $storage->fromTmpFile($tmpFile,self::getInternalPath($path));
} }
return $storage->fromTmpFile($tmpFile,self::getInternalPath($path));
} }
} }
static public function fromUploadedFile($tmpFile,$path){ static public function fromUploadedFile($tmpFile,$path){
if(self::canWrite($path) and $storage=self::getStorage($path)){ if(self::canWrite($path) and $storage=self::getStorage($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path)); $run=true;
if(!self::file_exists($path)){ if($run and !self::file_exists($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'create', array( 'path' => $path, 'run' => &$run));
}
if($run){
OC_HOOK::emit( 'OC_FILESYSTEM', 'write', array( 'path' => $path, 'run' => &$run));
}
if($run){
return $storage->fromUploadedFile($tmpFile,self::getInternalPath($path));
} }
return $storage->fromUploadedFile($tmpFile,self::getInternalPath($path));
} }
} }
static public function getMimeType($path){ static public function getMimeType($path){
@ -426,8 +475,11 @@ class OC_FILESYSTEM{
} }
static public function delTree($path){ static public function delTree($path){
if(self::canWrite($path) and $storage=self::getStorage($path)){ if(self::canWrite($path) and $storage=self::getStorage($path)){
OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path)); $run=true;
return $storage->delTree(self::getInternalPath($path)); OC_HOOK::emit( 'OC_FILESYSTEM', 'delete', array( 'path' => $path, 'run' => &$run));
if($run){
return $storage->delTree(self::getInternalPath($path));
}
} }
} }
static public function find($path){ static public function find($path){
@ -475,10 +527,12 @@ class OC_FILESYSTEM{
$fakeRootLength=strlen(self::$fakeRoot); $fakeRootLength=strlen(self::$fakeRoot);
foreach(self::$storages as $mountpoint=>$storage){ foreach(self::$storages as $mountpoint=>$storage){
$results=$storage->search($query); $results=$storage->search($query);
foreach($results as $result){ if(is_array($results)){
$file=str_replace('//','/',$mountpoint.$result); foreach($results as $result){
$file=substr($file,$fakeRootLength); $file=str_replace('//','/',$mountpoint.$result);
$files[]=$file; $file=substr($file,$fakeRootLength);
$files[]=$file;
}
} }
} }
return $files; return $files;