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simple file encryption wip

This commit is contained in:
Robin Appelman 2011-10-22 14:11:15 +02:00 committed by Robin Appelman
parent 82394f9527
commit e2b4954176
2 changed files with 16 additions and 8 deletions
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7
apps/files_encryption/lib/cryptstream.php
View File

@ -29,9 +29,12 @@ class OC_CryptStream{
public function stream_open($path, $mode, $options, &$opened_path){
$path=str_replace('crypt://','',$path);
$this->source=OC_FileSystem::fopen($path.'.enc',$mode);
OC_Log::write('files_encryption','open encrypted '.$path. ' in '.$mode,OC_Log::DEBUG);
OC_FileProxy::$enabled=false;//disable fileproxies so we can open the source file
$this->source=OC_FileSystem::fopen($path,$mode);
OC_FileProxy::$enabled=true;
if(!is_resource($this->source)){
OC_Log::write('files_encryption','failed to open '.$path.'.enc',OC_Log::ERROR);
OC_Log::write('files_encryption','failed to open '.$path,OC_Log::ERROR);
}
return is_resource($this->source);
}

17
apps/files_encryption/lib/proxy.php
View File

@ -28,7 +28,6 @@
class OC_FileProxy_Encryption extends OC_FileProxy{
public function preFile_put_contents($path,&$data){
if(substr($path,-4)=='.enc'){
OC_Log::write('files_encryption','file put contents',OC_Log::DEBUG);
if (is_resource($data)) {
$newData='';
while(!feof($data)){
@ -44,27 +43,33 @@ class OC_FileProxy_Encryption extends OC_FileProxy{
public function postFile_get_contents($path,$data){
if(substr($path,-4)=='.enc'){
OC_Log::write('files_encryption','file get contents',OC_Log::DEBUG);
return OC_Crypt::blockDecrypt($data);
}
}
public function postFopen($path,&$result){
if(substr($path,-4)=='.enc'){
OC_Log::write('files_encryption','fopen',OC_Log::DEBUG);
$meta=stream_get_meta_data($result);
fclose($result);
$result=fopen('crypt://'.substr($path,0,-4));//remove the .enc extention so we don't catch the fopen request made by cryptstream
OC_log::write('file_encryption','mode: '.$meta['mode']);
$result=fopen('crypt://'.$path,$meta['mode']);
}
}
public function preReadFile($path){
if(substr($path,-4)=='.enc'){
OC_Log::write('files_encryption','readline',OC_Log::DEBUG);
$stream=fopen('crypt://'.substr($path,0,-4));
$stream=fopen('crypt://'.$path,'r');
while(!feof($stream)){
print(fread($stream,8192));
}
return false;//cancel the original request
}
}
public function postGetMimeType($path,$result){
if(substr($path,-4)=='.enc'){
return 'text/plain';
}
return $result;
}
}