nextcloud/tests/lib/Files/Stream/EncryptionTest.php
Christoph Wurst caff1023ea
Format control structures, classes, methods and function
To continue this formatting madness, here's a tiny patch that adds
unified formatting for control structures like if and loops as well as
classes, their methods and anonymous functions. This basically forces
the constructs to start on the same line. This is not exactly what PSR2
wants, but I think we can have a few exceptions with "our" style. The
starting of braces on the same line is pracrically standard for our
code.

This also removes and empty lines from method/function bodies at the
beginning and end.

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
2020-04-10 14:19:56 +02:00

362 lines
13 KiB
PHP

<?php
namespace Test\Files\Stream;
use OC\Files\Cache\CacheEntry;
use OC\Files\View;
use OC\Memcache\ArrayCache;
use OCP\EventDispatcher\IEventDispatcher;
use OCP\Files\Cache\ICache;
use OCP\IConfig;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
class EncryptionTest extends \Test\TestCase {
/** @var \OCP\Encryption\IEncryptionModule | \PHPUnit_Framework_MockObject_MockObject */
private $encryptionModule;
/**
* @param string $fileName
* @param string $mode
* @param integer $unencryptedSize
* @return resource
*/
protected function getStream($fileName, $mode, $unencryptedSize, $wrapper = '\OC\Files\Stream\Encryption') {
clearstatcache();
$size = filesize($fileName);
$source = fopen($fileName, $mode);
$internalPath = $fileName;
$fullPath = $fileName;
$header = [];
$uid = '';
$this->encryptionModule = $this->buildMockModule();
$cache = $this->createMock(ICache::class);
$storage = $this->getMockBuilder('\OC\Files\Storage\Storage')
->disableOriginalConstructor()->getMock();
$encStorage = $this->getMockBuilder('\OC\Files\Storage\Wrapper\Encryption')
->disableOriginalConstructor()->getMock();
$config = $this->getMockBuilder(IConfig::class)
->disableOriginalConstructor()
->getMock();
$arrayCache = $this->createMock(ArrayCache::class);
$groupManager = $this->getMockBuilder('\OC\Group\Manager')
->disableOriginalConstructor()
->getMock();
$file = $this->getMockBuilder('\OC\Encryption\File')
->disableOriginalConstructor()
->setMethods(['getAccessList'])
->getMock();
$file->expects($this->any())->method('getAccessList')->willReturn([]);
$util = $this->getMockBuilder('\OC\Encryption\Util')
->setMethods(['getUidAndFilename'])
->setConstructorArgs([new View(), new \OC\User\Manager($config, $this->createMock(EventDispatcherInterface::class), $this->createMock(IEventDispatcher::class)), $groupManager, $config, $arrayCache])
->getMock();
$util->expects($this->any())
->method('getUidAndFilename')
->willReturn(['user1', $internalPath]);
$storage->expects($this->any())->method('getCache')->willReturn($cache);
$entry = new CacheEntry([
'fileid' => 5,
'encryptedVersion' => 2,
]);
$cache->expects($this->any())->method('get')->willReturn($entry);
$cache->expects($this->any())->method('update')->with(5, ['encrypted' => 3, 'encryptedVersion' => 3]);
return $wrapper::wrap($source, $internalPath,
$fullPath, $header, $uid, $this->encryptionModule, $storage, $encStorage,
$util, $file, $mode, $size, $unencryptedSize, 8192, $wrapper);
}
/**
* @dataProvider dataProviderStreamOpen()
*/
public function testStreamOpen($isMasterKeyUsed,
$mode,
$fullPath,
$fileExists,
$expectedSharePath,
$expectedSize,
$expectedUnencryptedSize,
$expectedReadOnly) {
// build mocks
$encryptionModuleMock = $this->getMockBuilder('\OCP\Encryption\IEncryptionModule')
->disableOriginalConstructor()->getMock();
$encryptionModuleMock->expects($this->any())->method('needDetailedAccessList')->willReturn(!$isMasterKeyUsed);
$encryptionModuleMock->expects($this->once())
->method('getUnencryptedBlockSize')->willReturn(99);
$encryptionModuleMock->expects($this->once())
->method('begin')->willReturn(true);
$storageMock = $this->getMockBuilder('\OC\Files\Storage\Storage')
->disableOriginalConstructor()->getMock();
$storageMock->expects($this->once())->method('file_exists')->willReturn($fileExists);
$fileMock = $this->getMockBuilder('\OC\Encryption\File')
->disableOriginalConstructor()->getMock();
if ($isMasterKeyUsed) {
$fileMock->expects($this->never())->method('getAccessList');
} else {
$fileMock->expects($this->once())->method('getAccessList')
->willReturnCallback(function ($sharePath) use ($expectedSharePath) {
$this->assertSame($expectedSharePath, $sharePath);
return [];
});
}
$utilMock = $this->getMockBuilder('\OC\Encryption\Util')
->disableOriginalConstructor()->getMock();
$utilMock->expects($this->any())
->method('getHeaderSize')
->willReturn(8192);
// get a instance of the stream wrapper
$streamWrapper = $this->getMockBuilder('\OC\Files\Stream\Encryption')
->setMethods(['loadContext', 'writeHeader', 'skipHeader'])->disableOriginalConstructor()->getMock();
// set internal properties of the stream wrapper
$stream = new \ReflectionClass('\OC\Files\Stream\Encryption');
$encryptionModule = $stream->getProperty('encryptionModule');
$encryptionModule->setAccessible(true);
$encryptionModule->setValue($streamWrapper, $encryptionModuleMock);
$encryptionModule->setAccessible(false);
$storage = $stream->getProperty('storage');
$storage->setAccessible(true);
$storage->setValue($streamWrapper, $storageMock);
$storage->setAccessible(false);
$file = $stream->getProperty('file');
$file->setAccessible(true);
$file->setValue($streamWrapper, $fileMock);
$file->setAccessible(false);
$util = $stream->getProperty('util');
$util->setAccessible(true);
$util->setValue($streamWrapper, $utilMock);
$util->setAccessible(false);
$fullPathP = $stream->getProperty('fullPath');
$fullPathP->setAccessible(true);
$fullPathP->setValue($streamWrapper, $fullPath);
$fullPathP->setAccessible(false);
$header = $stream->getProperty('header');
$header->setAccessible(true);
$header->setValue($streamWrapper, []);
$header->setAccessible(false);
$this->invokePrivate($streamWrapper, 'signed', [true]);
// call stream_open, that's the method we want to test
$dummyVar = 'foo';
$streamWrapper->stream_open('', $mode, '', $dummyVar);
// check internal properties
$size = $stream->getProperty('size');
$size->setAccessible(true);
$this->assertSame($expectedSize,
$size->getValue($streamWrapper)
);
$size->setAccessible(false);
$unencryptedSize = $stream->getProperty('unencryptedSize');
$unencryptedSize->setAccessible(true);
$this->assertSame($expectedUnencryptedSize,
$unencryptedSize->getValue($streamWrapper)
);
$unencryptedSize->setAccessible(false);
$readOnly = $stream->getProperty('readOnly');
$readOnly->setAccessible(true);
$this->assertSame($expectedReadOnly,
$readOnly->getValue($streamWrapper)
);
$readOnly->setAccessible(false);
}
public function dataProviderStreamOpen() {
return [
[false, 'r', '/foo/bar/test.txt', true, '/foo/bar/test.txt', null, null, true],
[false, 'r', '/foo/bar/test.txt', false, '/foo/bar', null, null, true],
[false, 'w', '/foo/bar/test.txt', true, '/foo/bar/test.txt', 8192, 0, false],
[true, 'r', '/foo/bar/test.txt', true, '/foo/bar/test.txt', null, null, true],
[true, 'r', '/foo/bar/test.txt', false, '/foo/bar', null, null, true],
[true, 'w', '/foo/bar/test.txt', true, '/foo/bar/test.txt', 8192, 0, false],
];
}
public function testWriteRead() {
$fileName = tempnam("/tmp", "FOO");
$stream = $this->getStream($fileName, 'w+', 0);
$this->assertEquals(6, fwrite($stream, 'foobar'));
fclose($stream);
$stream = $this->getStream($fileName, 'r', 6);
$this->assertEquals('foobar', fread($stream, 100));
fclose($stream);
$stream = $this->getStream($fileName, 'r+', 6);
$this->assertEquals(3, fwrite($stream, 'bar'));
fclose($stream);
$stream = $this->getStream($fileName, 'r', 6);
$this->assertEquals('barbar', fread($stream, 100));
fclose($stream);
unlink($fileName);
}
public function testRewind() {
$fileName = tempnam("/tmp", "FOO");
$stream = $this->getStream($fileName, 'w+', 0);
$this->assertEquals(6, fwrite($stream, 'foobar'));
$this->assertEquals(true, rewind($stream));
$this->assertEquals('foobar', fread($stream, 100));
$this->assertEquals(true, rewind($stream));
$this->assertEquals(3, fwrite($stream, 'bar'));
fclose($stream);
$stream = $this->getStream($fileName, 'r', 6);
$this->assertEquals('barbar', fread($stream, 100));
fclose($stream);
unlink($fileName);
}
public function testSeek() {
$fileName = tempnam("/tmp", "FOO");
$stream = $this->getStream($fileName, 'w+', 0);
$this->assertEquals(6, fwrite($stream, 'foobar'));
$this->assertEquals(0, fseek($stream, 3));
$this->assertEquals(6, fwrite($stream, 'foobar'));
fclose($stream);
$stream = $this->getStream($fileName, 'r', 9);
$this->assertEquals('foofoobar', fread($stream, 100));
$this->assertEquals(-1, fseek($stream, 10));
$this->assertEquals(0, fseek($stream, 9));
$this->assertEquals(-1, fseek($stream, -10, SEEK_CUR));
$this->assertEquals(0, fseek($stream, -9, SEEK_CUR));
$this->assertEquals(-1, fseek($stream, -10, SEEK_END));
$this->assertEquals(0, fseek($stream, -9, SEEK_END));
fclose($stream);
unlink($fileName);
}
function dataFilesProvider() {
return [
['lorem-big.txt'],
['block-aligned.txt'],
['block-aligned-plus-one.txt'],
];
}
/**
* @dataProvider dataFilesProvider
*/
public function testWriteReadBigFile($testFile) {
$expectedData = file_get_contents(\OC::$SERVERROOT . '/tests/data/' . $testFile);
// write it
$fileName = tempnam("/tmp", "FOO");
$stream = $this->getStream($fileName, 'w+', 0);
// while writing the file from the beginning to the end we should never try
// to read parts of the file. This should only happen for write operations
// in the middle of a file
$this->encryptionModule->expects($this->never())->method('decrypt');
fwrite($stream, $expectedData);
fclose($stream);
// read it all
$stream = $this->getStream($fileName, 'r', strlen($expectedData));
$data = stream_get_contents($stream);
fclose($stream);
$this->assertEquals($expectedData, $data);
// another read test with a loop like we do in several places:
$stream = $this->getStream($fileName, 'r', strlen($expectedData));
$data = '';
while (!feof($stream)) {
$data .= fread($stream, 8192);
}
fclose($stream);
$this->assertEquals($expectedData, $data);
unlink($fileName);
}
/**
* simulate a non-seekable storage
*
* @dataProvider dataFilesProvider
*/
public function testWriteToNonSeekableStorage($testFile) {
$wrapper = $this->getMockBuilder('\OC\Files\Stream\Encryption')
->setMethods(['parentSeekStream'])->getMock();
$wrapper->expects($this->any())->method('parentSeekStream')->willReturn(false);
$expectedData = file_get_contents(\OC::$SERVERROOT . '/tests/data/' . $testFile);
// write it
$fileName = tempnam("/tmp", "FOO");
$stream = $this->getStream($fileName, 'w+', 0, '\Test\Files\Stream\DummyEncryptionWrapper');
// while writing the file from the beginning to the end we should never try
// to read parts of the file. This should only happen for write operations
// in the middle of a file
$this->encryptionModule->expects($this->never())->method('decrypt');
fwrite($stream, $expectedData);
fclose($stream);
// read it all
$stream = $this->getStream($fileName, 'r', strlen($expectedData), '\Test\Files\Stream\DummyEncryptionWrapper');
$data = stream_get_contents($stream);
fclose($stream);
$this->assertEquals($expectedData, $data);
// another read test with a loop like we do in several places:
$stream = $this->getStream($fileName, 'r', strlen($expectedData));
$data = '';
while (!feof($stream)) {
$data .= fread($stream, 8192);
}
fclose($stream);
$this->assertEquals($expectedData, $data);
unlink($fileName);
}
/**
* @return \PHPUnit_Framework_MockObject_MockObject
*/
protected function buildMockModule() {
$encryptionModule = $this->getMockBuilder('\OCP\Encryption\IEncryptionModule')
->disableOriginalConstructor()
->setMethods(['getId', 'getDisplayName', 'begin', 'end', 'encrypt', 'decrypt', 'update', 'shouldEncrypt', 'getUnencryptedBlockSize', 'isReadable', 'encryptAll', 'prepareDecryptAll', 'isReadyForUser', 'needDetailedAccessList'])
->getMock();
$encryptionModule->expects($this->any())->method('getId')->willReturn('UNIT_TEST_MODULE');
$encryptionModule->expects($this->any())->method('getDisplayName')->willReturn('Unit test module');
$encryptionModule->expects($this->any())->method('begin')->willReturn([]);
$encryptionModule->expects($this->any())->method('end')->willReturn('');
$encryptionModule->expects($this->any())->method('isReadable')->willReturn(true);
$encryptionModule->expects($this->any())->method('needDetailedAccessList')->willReturn(false);
$encryptionModule->expects($this->any())->method('encrypt')->willReturnCallback(function ($data) {
// simulate different block size by adding some padding to the data
if (isset($data[6125])) {
return str_pad($data, 8192, 'X');
}
// last block
return $data;
});
$encryptionModule->expects($this->any())->method('decrypt')->willReturnCallback(function ($data) {
if (isset($data[8191])) {
return substr($data, 0, 6126);
}
// last block
return $data;
});
$encryptionModule->expects($this->any())->method('update')->willReturn(true);
$encryptionModule->expects($this->any())->method('shouldEncrypt')->willReturn(true);
$encryptionModule->expects($this->any())->method('getUnencryptedBlockSize')->willReturn(6126);
return $encryptionModule;
}
}