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fix for encryption binary files

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This commit is contained in:
Robin Appelman 2012-06-15 23:48:39 +02:00
parent 8484e16516
commit 195c37f88a
4 changed files with 58 additions and 19 deletions
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37
apps/files_encryption/lib/crypt.php
View file

@ -43,22 +43,22 @@ class OC_Crypt {
self::init($params['uid'],$params['password']);
}
public static function init($login,$password) {
$view1=new OC_FilesystemView('/');
if(!$view1->file_exists('/'.$login)){
$view1->mkdir('/'.$login);
}
public static function init($login,$password) {
$view1=new OC_FilesystemView('/');
if(!$view1->file_exists('/'.$login)){
$view1->mkdir('/'.$login);
}
$view=new OC_FilesystemView('/'.$login);
OC_FileProxy::$enabled=false;
if(!$view->file_exists('/encryption.key')){// does key exist?
OC_Crypt::createkey($login,$password);
}
$key=$view->file_get_contents('/encryption.key');
OC_FileProxy::$enabled=true;
$_SESSION['enckey']=OC_Crypt::decrypt($key, $password);
}
$view=new OC_FilesystemView('/'.$login);
OC_FileProxy::$enabled=false;
if(!$view->file_exists('/encryption.key')){// does key exist?
OC_Crypt::createkey($login,$password);
}
$key=$view->file_get_contents('/encryption.key');
OC_FileProxy::$enabled=true;
$_SESSION['enckey']=OC_Crypt::decrypt($key, $password);
}
/**
@ -140,7 +140,7 @@ class OC_Crypt {
public static function decrypt( $content, $key='') {
$bf = self::getBlowfish($key);
$data=$bf->decrypt($content);
return rtrim($data, "\0");
return $data;
}
/**
@ -181,6 +181,9 @@ class OC_Crypt {
while (!feof($handleread)) {
$content = fread($handleread, 8192);
$enccontent=OC_CRYPT::decrypt( $content, $key);
if(feof($handleread)){
$enccontent=rtrim($enccontent, "\0");
}
fwrite($handlewrite, $enccontent);
}
fclose($handlewrite);
@ -209,6 +212,6 @@ class OC_Crypt {
$result.=self::decrypt(substr($data,0,8192),$key);
$data=substr($data,8192);
}
return $result;
return rtrim($result, "\0");
}
}

4
apps/files_encryption/lib/cryptstream.php
View file

@ -47,7 +47,6 @@ class OC_CryptStream{
$this->path=self::$sourceStreams[basename($path)]['path'];
}else{
$this->path=$path;
OCP\Util::writeLog('files_encryption','open encrypted '.$path. ' in '.$mode,OCP\Util::DEBUG);
OC_FileProxy::$enabled=false;//disable fileproxies so we can open the source file
$this->source=self::$rootView->fopen($path,$mode);
OC_FileProxy::$enabled=true;
@ -84,6 +83,9 @@ class OC_CryptStream{
}else{
$result='';
}
if($this->stream_eof()){
$result=rtrim($result, "\0");
}
return $result;
}

19
apps/files_encryption/tests/encryption.php
View file

@ -13,6 +13,7 @@ class Test_Encryption extends UnitTestCase {
$source=file_get_contents($file); //nice large text file
$encrypted=OC_Crypt::encrypt($source,$key);
$decrypted=OC_Crypt::decrypt($encrypted,$key);
$decrypted=rtrim($decrypted, "\0");
$this->assertNotEqual($encrypted,$source);
$this->assertEqual($decrypted,$source);
@ -20,6 +21,7 @@ class Test_Encryption extends UnitTestCase {
$encrypted=OC_Crypt::encrypt($chunk,$key);
$this->assertEqual(strlen($chunk),strlen($encrypted));
$decrypted=OC_Crypt::decrypt($encrypted,$key);
$decrypted=rtrim($decrypted, "\0");
$this->assertEqual($decrypted,$chunk);
$encrypted=OC_Crypt::blockEncrypt($source,$key);
@ -43,6 +45,7 @@ class Test_Encryption extends UnitTestCase {
$source=file_get_contents($file); //binary file
$encrypted=OC_Crypt::encrypt($source,$key);
$decrypted=OC_Crypt::decrypt($encrypted,$key);
$decrypted=rtrim($decrypted, "\0");
$this->assertEqual($decrypted,$source);
$encrypted=OC_Crypt::blockEncrypt($source,$key);
@ -50,4 +53,20 @@ class Test_Encryption extends UnitTestCase {
$this->assertEqual($decrypted,$source);
}
function testBinary(){
$key=uniqid();
$file=__DIR__.'/binary';
$source=file_get_contents($file); //binary file
$encrypted=OC_Crypt::encrypt($source,$key);
$decrypted=OC_Crypt::decrypt($encrypted,$key);
$decrypted=rtrim($decrypted, "\0");
$this->assertEqual($decrypted,$source);
$encrypted=OC_Crypt::blockEncrypt($source,$key);
$decrypted=OC_Crypt::blockDecrypt($encrypted,$key);
$this->assertEqual($decrypted,$source);
}
}

17
apps/files_encryption/tests/stream.php
View file

@ -50,7 +50,22 @@ class Test_CryptStream extends UnitTestCase {
$file=$this->tmpFiles[$id];
}
$stream=fopen($file,$mode);
OC_CryptStream::$sourceStreams[$id]=array('path'=>'dummy','stream'=>$stream);
OC_CryptStream::$sourceStreams[$id]=array('path'=>'dummy'.$id,'stream'=>$stream);
return fopen('crypt://streams/'.$id,$mode);
}
function testBinary(){
$file=__DIR__.'/binary';
$source=file_get_contents($file);
$stream=$this->getStream('test','w');
fwrite($stream,$source);
fclose($stream);
$stream=$this->getStream('test','r');
$data=stream_get_contents($stream);
fclose($stream);
$this->assertEqual(strlen($data),strlen($source));
$this->assertEqual($source,$data);
}
}