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