tests/phpunit/includes/libs/xmp/XMPTest.php

   1 <?php
   2
   3 /**
   4  * @group Media
   5  * @covers XMPReader
   6  */
   7 class XMPTest extends PHPUnit_Framework_TestCase {
   8
   9         protected function setUp() {
  10                 parent::setUp();
  11                 # Requires libxml to do XMP parsing
  12                 if ( !extension_loaded( 'exif' ) ) {
  13                         $this->markTestSkipped( "PHP extension 'exif' is not loaded, skipping." );
  14                 }
  15         }
  16
  17         /**
  18          * Put XMP in, compare what comes out...
  19          *
  20          * @param string $xmp The actual xml data.
  21          * @param array $expected Expected result of parsing the xmp.
  22          * @param string $info Short sentence on what's being tested.
  23          *
  24          * @throws Exception
  25          * @dataProvider provideXMPParse
  26          *
  27          * @covers XMPReader::parse
  28          */
  29         public function testXMPParse( $xmp, $expected, $info ) {
  30                 if ( !is_string( $xmp ) || !is_array( $expected ) ) {
  31                         throw new Exception( "Invalid data provided to " . __METHOD__ );
  32                 }
  33                 $reader = new XMPReader;
  34                 $reader->parse( $xmp );
  35                 $this->assertEquals( $expected, $reader->getResults(), $info, 0.0000000001 );
  36         }
  37
  38         public static function provideXMPParse() {
  39                 $xmpPath = __DIR__ . '/../../../data/xmp/';
  40                 $data = [];
  41
  42                 // $xmpFiles format: array of arrays with first arg file base name,
  43                 // with the actual file having .xmp on the end for the xmp
  44                 // and .result.php on the end for a php file containing the result
  45                 // array. Second argument is some info on what's being tested.
  46                 $xmpFiles = [
  47                         [ '1', 'parseType=Resource test' ],
  48                         [ '2', 'Structure with mixed attribute and element props' ],
  49                         [ '3', 'Extra qualifiers (that should be ignored)' ],
  50                         [ '3-invalid', 'Test ignoring qualifiers that look like normal props' ],
  51                         [ '4', 'Flash as qualifier' ],
  52                         [ '5', 'Flash as qualifier 2' ],
  53                         [ '6', 'Multiple rdf:Description' ],
  54                         [ '7', 'Generic test of several property types' ],
  55                         [ 'flash', 'Test of Flash property' ],
  56                         [ 'invalid-child-not-struct', 'Test child props not in struct or ignored' ],
  57                         [ 'no-recognized-props', 'Test namespace and no recognized props' ],
  58                         [ 'no-namespace', 'Test non-namespaced attributes are ignored' ],
  59                         [ 'bag-for-seq', "Allow bag's instead of seq's. (T29105)" ],
  60                         [ 'utf16BE', 'UTF-16BE encoding' ],
  61                         [ 'utf16LE', 'UTF-16LE encoding' ],
  62                         [ 'utf32BE', 'UTF-32BE encoding' ],
  63                         [ 'utf32LE', 'UTF-32LE encoding' ],
  64                         [ 'xmpExt', 'Extended XMP missing second part' ],
  65                         [ 'gps', 'Handling of exif GPS parameters in XMP' ],
  66                 ];
  67
  68                 $xmpFiles[] = [ 'doctype-included', 'XMP includes doctype' ];
  69
  70                 foreach ( $xmpFiles as $file ) {
  71                         $xmp = file_get_contents( $xmpPath . $file[0] . '.xmp' );
  72                         // I'm not sure if this is the best way to handle getting the
  73                         // result array, but it seems kind of big to put directly in the test
  74                         // file.
  75                         $result = null;
  76                         include $xmpPath . $file[0] . '.result.php';
  77                         $data[] = [ $xmp, $result, '[' . $file[0] . '.xmp] ' . $file[1] ];
  78                 }
  79
  80                 return $data;
  81         }
  82
  83         /** Test ExtendedXMP block support. (Used when the XMP has to be split
  84          * over multiple jpeg segments, due to 64k size limit on jpeg segments.
  85          *
  86          * @todo This is based on what the standard says. Need to find a real
  87          * world example file to double check the support for this is right.
  88          *
  89          * @covers XMPReader::parseExtended
  90          */
  91         public function testExtendedXMP() {
  92                 $xmpPath = __DIR__ . '/../../../data/xmp/';
  93                 $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
  94                 $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );
  95
  96                 $md5sum = '28C74E0AC2D796886759006FBE2E57B7'; // of xmpExt2.xmp
  97                 $length = pack( 'N', strlen( $extendedXMP ) );
  98                 $offset = pack( 'N', 0 );
  99                 $extendedPacket = $md5sum . $length . $offset . $extendedXMP;
 100
 101                 $reader = new XMPReader();
 102                 $reader->parse( $standardXMP );
 103                 $reader->parseExtended( $extendedPacket );
 104                 $actual = $reader->getResults();
 105
 106                 $expected = [
 107                         'xmp-exif' => [
 108                                 'DigitalZoomRatio' => '0/10',
 109                                 'Flash' => 9,
 110                                 'FNumber' => '2/10',
 111                         ]
 112                 ];
 113
 114                 $this->assertEquals( $expected, $actual );
 115         }
 116
 117         /**
 118          * This test has an extended XMP block with a wrong guid (md5sum)
 119          * and thus should only return the StandardXMP, not the ExtendedXMP.
 120          *
 121          * @covers XMPReader::parseExtended
 122          */
 123         public function testExtendedXMPWithWrongGUID() {
 124                 $xmpPath = __DIR__ . '/../../../data/xmp/';
 125                 $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
 126                 $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );
 127
 128                 $md5sum = '28C74E0AC2D796886759006FBE2E57B9'; // Note last digit.
 129                 $length = pack( 'N', strlen( $extendedXMP ) );
 130                 $offset = pack( 'N', 0 );
 131                 $extendedPacket = $md5sum . $length . $offset . $extendedXMP;
 132
 133                 $reader = new XMPReader();
 134                 $reader->parse( $standardXMP );
 135                 $reader->parseExtended( $extendedPacket );
 136                 $actual = $reader->getResults();
 137
 138                 $expected = [
 139                         'xmp-exif' => [
 140                                 'DigitalZoomRatio' => '0/10',
 141                                 'Flash' => 9,
 142                         ]
 143                 ];
 144
 145                 $this->assertEquals( $expected, $actual );
 146         }
 147
 148         /**
 149          * Have a high offset to simulate a missing packet,
 150          * which should cause it to ignore the ExtendedXMP packet.
 151          *
 152          * @covers XMPReader::parseExtended
 153          */
 154         public function testExtendedXMPMissingPacket() {
 155                 $xmpPath = __DIR__ . '/../../../data/xmp/';
 156                 $standardXMP = file_get_contents( $xmpPath . 'xmpExt.xmp' );
 157                 $extendedXMP = file_get_contents( $xmpPath . 'xmpExt2.xmp' );
 158
 159                 $md5sum = '28C74E0AC2D796886759006FBE2E57B7'; // of xmpExt2.xmp
 160                 $length = pack( 'N', strlen( $extendedXMP ) );
 161                 $offset = pack( 'N', 2048 );
 162                 $extendedPacket = $md5sum . $length . $offset . $extendedXMP;
 163
 164                 $reader = new XMPReader();
 165                 $reader->parse( $standardXMP );
 166                 $reader->parseExtended( $extendedPacket );
 167                 $actual = $reader->getResults();
 168
 169                 $expected = [
 170                         'xmp-exif' => [
 171                                 'DigitalZoomRatio' => '0/10',
 172                                 'Flash' => 9,
 173                         ]
 174                 ];
 175
 176                 $this->assertEquals( $expected, $actual );
 177         }
 178
 179         /**
 180          * Test for multi-section, hostile XML
 181          * @covers XMPReader::checkParseSafety
 182          */
 183         public function testCheckParseSafety() {
 184                 // Test for detection
 185                 $xmpPath = __DIR__ . '/../../../data/xmp/';
 186                 $file = fopen( $xmpPath . 'doctype-included.xmp', 'rb' );
 187                 $valid = false;
 188                 $reader = new XMPReader();
 189                 do {
 190                         $chunk = fread( $file, 10 );
 191                         $valid = $reader->parse( $chunk, feof( $file ) );
 192                 } while ( !feof( $file ) );
 193                 $this->assertFalse( $valid, 'Check that doctype is detected in fragmented XML' );
 194                 $this->assertEquals(
 195                         [],
 196                         $reader->getResults(),
 197                         'Check that doctype is detected in fragmented XML'
 198                 );
 199                 fclose( $file );
 200                 unset( $reader );
 201
 202                 // Test for false positives
 203                 $file = fopen( $xmpPath . 'doctype-not-included.xmp', 'rb' );
 204                 $valid = false;
 205                 $reader = new XMPReader();
 206                 do {
 207                         $chunk = fread( $file, 10 );
 208                         $valid = $reader->parse( $chunk, feof( $file ) );
 209                 } while ( !feof( $file ) );
 210                 $this->assertTrue(
 211                         $valid,
 212                         'Check for false-positive detecting doctype in fragmented XML'
 213                 );
 214                 $this->assertEquals(
 215                         [
 216                                 'xmp-exif' => [
 217                                         'DigitalZoomRatio' => '0/10',
 218                                         'Flash' => '9'
 219                                 ]
 220                         ],
 221                         $reader->getResults(),
 222                         'Check that doctype is detected in fragmented XML'
 223                 );
 224         }
 225 }