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<?php use Wikimedia\TestingAccessWrapper; /** * @group Media * @covers MimeAnalyzer */ class MimeAnalyzerTest extends PHPUnit\Framework\TestCase { use MediaWikiCoversValidator; /** @var MimeAnalyzer */ private $mimeAnalyzer; protected function setUp(): void { parent::setUp(); $this->mimeAnalyzer = new MimeAnalyzer( [ 'infoFile' => MimeAnalyzer::USE_INTERNAL, 'typeFile' => MimeAnalyzer::USE_INTERNAL, 'xmlTypes' => [ 'http://www.w3.org/2000/svg:svg' => 'image/svg+xml', 'svg' => 'image/svg+xml', 'http://www.lysator.liu.se/~alla/dia/:diagram' => 'application/x-dia-diagram', 'http://www.w3.org/1999/xhtml:html' => 'text/html', // application/xhtml+xml? 'html' => 'text/html', // application/xhtml+xml? ] ] ); } private function doGuessMimeType( array $parameters = [] ) { $class = new ReflectionClass( get_class( $this->mimeAnalyzer ) ); $method = $class->getMethod( 'doGuessMimeType' ); $method->setAccessible( true ); return $method->invokeArgs( $this->mimeAnalyzer, $parameters ); } /** * @dataProvider providerImproveTypeFromExtension * @param string $ext File extension (no leading dot) * @param string $oldMime Initially detected MIME * @param string|null $expectedMime MIME type after taking extension into account */ public function testImproveTypeFromExtension( $ext, $oldMime, $expectedMime ) { $actualMime = $this->mimeAnalyzer->improveTypeFromExtension( $oldMime, $ext ); $this->assertEquals( $expectedMime, $actualMime ); } public function providerImproveTypeFromExtension() { return [ [ 'gif', 'image/gif', 'image/gif' ], [ 'gif', 'unknown/unknown', 'unknown/unknown' ], [ 'wrl', 'unknown/unknown', 'model/vrml' ], [ 'txt', 'text/plain', 'text/plain' ], [ 'csv', 'text/plain', 'text/csv' ], [ 'tsv', 'text/plain', 'text/tab-separated-values' ], [ 'js', 'text/javascript', 'application/javascript' ], [ 'js', 'application/x-javascript', 'application/javascript' ], [ 'json', 'text/plain', 'application/json' ], [ 'foo', 'application/x-opc+zip', 'application/zip' ], [ 'docx', 'application/x-opc+zip', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document' ], [ 'djvu', 'image/x-djvu', 'image/vnd.djvu' ], [ 'wav', 'audio/wav', 'audio/wav' ], [ 'odt', 'application/vnd.oasis.opendocument', 'application/vnd.oasis.opendocument.text' ], // XXX: It's probably wrong (as in: confusing and error-prone) for // ::improveTypeFromExtension to return null (T253483). // This test case exists to ensure that any changes to the existing // behavior are intentional. [ 'no_such_extension', 'unknown/unknown', null ], ]; } public function provideGetMediaType() { // Make sure encoder=ffmpeg2theora don't trigger MEDIATYPE_VIDEO (T65584) yield 'Recognize ogg' => [ 'say-test.ogg', 'application/ogg', MEDIATYPE_AUDIO ]; // Make sure Opus audio files don't trigger MEDIATYPE_MULTIMEDIA (T151352) yield 'Recognize Opus' => [ 'say-test.opus', 'application/ogg', MEDIATYPE_AUDIO ]; // Make sure mp3 files are detected as audio type yield 'Recognize mp3' => [ 'say-test-with-id3.mp3', null, MEDIATYPE_AUDIO ]; } /** * @dataProvider provideGetMediaType */ public function testGetMediaType( $file, $mime, $expectType ) { $file = __DIR__ . '/../../../../data/media/' . $file; $this->assertEquals( $expectType, $this->mimeAnalyzer->getMediaType( $file, $mime ) ); } public function provideDoGuessMimeType() { // Make sure MP3 with id3 tag is recognized yield 'Recognize mp3 with id3' => [ 'say-test-with-id3.mp3', 'mp3', 'audio/mpeg' ]; // Make sure MP3 without id3 tag is recognized (MPEG-1 sample rates) yield 'Recognize mp3 no id3, MPEG-1' => [ 'say-test-mpeg1.mp3', 'mp3', 'audio/mpeg' ]; // Make sure MP3 without id3 tag is recognized (MPEG-2 sample rates) yield 'Recognize mp3 no id3, MPEG-2' => [ 'say-test-mpeg2.mp3', 'mp3', 'audio/mpeg' ]; // Make sure MP3 without id3 tag is recognized (MPEG-2.5 sample rates) yield 'Recognize mp3 no id3, MPEG-2.5' => [ 'say-test-mpeg2.5.mp3', 'mp3', 'audio/mpeg' ]; // A ZIP file embedded in the middle of a .doc file is still a Word Document yield 'ZIP in DOC' => [ 'zip-in-doc.doc', 'doc', 'application/msword' ]; yield 'Jpeg2000, lossless' => [ 'jpeg2000-lossless.jp2', 'jp2', 'image/jp2' ]; yield 'Jpeg2000, part 2' => [ 'jpeg2000-profile.jpf', 'jpf', 'image/jpx' ]; } /** * @dataProvider provideDoGuessMimeType */ public function testDoGuessMimeType( $file, $ext, $expectType ) { $file = __DIR__ . '/../../../../data/media/' . $file; $this->assertEquals( $expectType, $this->doGuessMimeType( [ $file, $ext ] ) ); } public static function provideDetectZipTypeFromFile() { return [ '[Content_Type].xml at end (T291750)' => [ 'type-at-end.docx', 'application/x-opc+zip' ], 'Typical ODT gives fake generic type' => [ 'lo6-empty.odt', 'application/vnd.oasis.opendocument' ], 'Ye olde GIFAR vulnerability' => [ 'gifar.gif', 'application/java', ], ]; } /** * @dataProvider provideDetectZipTypeFromFile * @param string $fileName * @param string $expected */ public function testDetectZipTypeFromFile( $fileName, $expected ) { $file = fopen( __DIR__ . '/../../../../data/media/' . $fileName, 'r' ); $this->assertEquals( $expected, $this->mimeAnalyzer->detectZipTypeFromFile( $file ) ); } public function providePngZipConfusion() { return [ [ 'An invalid ZIP file due to the signature being too close to the ' . 'end to accomodate an EOCDR', 'zip-sig-near-end.png', 'image/png', ], [ 'An invalid ZIP file due to the comment length running beyond the ' . 'end of the file', 'zip-comment-overflow.png', 'image/png', ], [ 'A ZIP file similar to the above, but without either of those two ' . 'problems. Not a valid ZIP file, but it passes MimeAnalyzer\'s ' . 'definition of a ZIP file. This is mostly a double check of the ' . 'above two tests.', 'zip-kind-of-valid.png', 'application/zip', ], [ 'As above with non-zero comment length', 'zip-kind-of-valid-2.png', 'application/zip', ], [ 'Ye olde GIFAR vulnerability', 'gifar.gif', 'application/java' ] ]; } /** @dataProvider providePngZipConfusion */ public function testPngZipConfusion( $description, $fileName, $expectedType ) { $file = __DIR__ . '/../../../../data/media/' . $fileName; $actualType = $this->doGuessMimeType( [ $file, 'png' ] ); $this->assertEquals( $expectedType, $actualType, $description ); } /** * The empty string is not a MIME type and should not be mapped to a file extension. */ public function testNoEmptyStringMimeType() { $this->assertSame( [], $this->mimeAnalyzer->getExtensionsFromMimeType( '' ) ); } /** * @covers MimeAnalyzer::addExtraTypes * @covers MimeAnalyzer::addExtraInfo */ public function testAddExtraTypes() { $mime = new MimeAnalyzer( [ 'infoFile' => MimeAnalyzer::USE_INTERNAL, 'typeFile' => MimeAnalyzer::USE_INTERNAL, 'xmlTypes' => [], 'initCallback' => static function ( $instance ) { $instance->addExtraTypes( 'fake/mime fake_extension' ); $instance->addExtraInfo( 'fake/mime [OFFICE]' ); $instance->mExtToMime[ 'no_such_extension' ] = 'fake/mime'; }, ] ); $this->assertSame( [ 'fake/mime' ], $mime->getMimeTypesFromExtension( 'fake_extension' ) ); $this->assertSame( 'fake/mime', $mime->getMimeTypeFromExtensionOrNull( 'no_such_extension' ) ); $mimeAccess = TestingAccessWrapper::newFromObject( $mime ); $this->assertSame( MEDIATYPE_OFFICE, $mimeAccess->findMediaType( '.fake_extension' ) ); } public function testGetMimeTypesFromExtension() { $this->assertSame( [ 'video/webm', 'audio/webm' ], $this->mimeAnalyzer->getMimeTypesFromExtension( 'webm' ) ); $this->assertSame( [], $this->mimeAnalyzer->getMimeTypesFromExtension( 'no_such_extension' ) ); } public function testGetMimeTypeFromExtensionOrNull() { $this->assertSame( 'video/webm', $this->mimeAnalyzer->getMimeTypeFromExtensionOrNull( 'webm' ) ); $this->assertNull( $this->mimeAnalyzer->getMimeTypeFromExtensionOrNull( 'no_such_extension' ) ); } public function testGetExtensionsFromMimeType() { $this->assertSame( [ 'sgml', 'sgm' ], $this->mimeAnalyzer->getExtensionsFromMimeType( 'text/sgml' ) ); $this->assertSame( [], $this->mimeAnalyzer->getExtensionsFromMimeType( 'fake/mime' ) ); } public function testGetExtensionFromMimeTypeOrNull() { $this->assertSame( 'sgml', $this->mimeAnalyzer->getExtensionFromMimeTypeOrNull( 'text/sgml' ) ); $this->assertNull( $this->mimeAnalyzer->getExtensionFromMimeTypeOrNull( 'fake/mime' ) ); } }
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