// ///
/////////////////////////////////////////////////////////////////
+if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
+ exit;
+}
class getid3_tiff extends getid3_handler
{
default:
$this->error('Invalid TIFF byte order identifier ('.substr($TIFFheader, 0, 2).') at offset '.$info['avdataoffset']);
return false;
- break;
}
$info['fileformat'] = 'tiff';
$info['video']['dataformat'] = 'tiff';
$info['video']['lossless'] = true;
$info['tiff']['ifd'] = array();
- $CurrentIFD = array();
+ $CurrentIFD = array();
$FieldTypeByteLength = array(1=>1, 2=>1, 3=>2, 4=>4, 5=>8);
$CurrentIFD['fieldcount'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
for ($i = 0; $i < $CurrentIFD['fieldcount']; $i++) {
- $CurrentIFD['fields'][$i]['raw']['tag'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
- $CurrentIFD['fields'][$i]['raw']['type'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
- $CurrentIFD['fields'][$i]['raw']['length'] = $this->TIFFendian2Int($this->fread(4), $info['tiff']['byte_order']);
- $CurrentIFD['fields'][$i]['raw']['offset'] = $this->fread(4);
-
+ $CurrentIFD['fields'][$i]['raw']['tag'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['raw']['type'] = $this->TIFFendian2Int($this->fread(2), $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['raw']['length'] = $this->TIFFendian2Int($this->fread(4), $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['raw']['valoff'] = $this->fread(4); // To save time and space the Value Offset contains the Value instead of pointing to the Value if and only if the Value fits into 4 bytes. If the Value is shorter than 4 bytes, it is left-justified within the 4-byte Value Offset, i.e., stored in the lowernumbered bytes. Whether the Value fits within 4 bytes is determined by the Type and Count of the field.
$CurrentIFD['fields'][$i]['raw']['tag_name'] = $this->TIFFcommentName($CurrentIFD['fields'][$i]['raw']['tag']);
switch ($CurrentIFD['fields'][$i]['raw']['type']) {
case 1: // BYTE An 8-bit unsigned integer.
if ($CurrentIFD['fields'][$i]['raw']['length'] <= 4) {
- $CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int(substr($CurrentIFD['fields'][$i]['raw']['offset'], 0, 1), $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int(substr($CurrentIFD['fields'][$i]['raw']['valoff'], 0, 1), $info['tiff']['byte_order']);
} else {
- $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['offset'], $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
}
break;
case 2: // ASCII 8-bit bytes that store ASCII codes; the last byte must be null.
if ($CurrentIFD['fields'][$i]['raw']['length'] <= 4) {
- $CurrentIFD['fields'][$i]['value'] = substr($CurrentIFD['fields'][$i]['raw']['offset'], 3);
+ $CurrentIFD['fields'][$i]['value'] = substr($CurrentIFD['fields'][$i]['raw']['valoff'], 3);
} else {
- $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['offset'], $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
}
break;
case 3: // SHORT A 16-bit (2-byte) unsigned integer.
if ($CurrentIFD['fields'][$i]['raw']['length'] <= 2) {
- $CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int(substr($CurrentIFD['fields'][$i]['raw']['offset'], 0, 2), $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int(substr($CurrentIFD['fields'][$i]['raw']['valoff'], 0, 2), $info['tiff']['byte_order']);
} else {
- $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['offset'], $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
}
break;
case 4: // LONG A 32-bit (4-byte) unsigned integer.
- if ($CurrentIFD['fields'][$i]['raw']['length'] <= 1) {
- $CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['offset'], $info['tiff']['byte_order']);
+ if ($CurrentIFD['fields'][$i]['raw']['length'] <= 4) {
+ $CurrentIFD['fields'][$i]['value'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
} else {
- $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['offset'], $info['tiff']['byte_order']);
+ $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
}
break;
case 5: // RATIONAL Two LONG_s: the first represents the numerator of a fraction, the second the denominator.
+ case 7: // UNDEFINED An 8-bit byte that may contain anything, depending on the definition of the field.
+ $CurrentIFD['fields'][$i]['offset'] = $this->TIFFendian2Int($CurrentIFD['fields'][$i]['raw']['valoff'], $info['tiff']['byte_order']);
+ break;
+
+ // Warning: It is possible that other TIFF field types will be added in the future. Readers should skip over fields containing an unexpected field type.
+ // In TIFF 6.0, some new field types have been defined:
+ // These new field types are also governed by the byte order (II or MM) in the TIFF header.
+ case 6: // SBYTE An 8-bit signed (twos-complement) integer.
+ case 8: // SSHORT A 16-bit (2-byte) signed (twos-complement) integer.
+ case 9: // SLONG A 32-bit (4-byte) signed (twos-complement) integer.
+ case 10: // SRATIONAL Two SLONGs: the first represents the numerator of a fraction, the second the denominator.
+ case 11: // FLOAT Single precision (4-byte) IEEE format
+ case 12: // DOUBLE Double precision (8-byte) IEEE format
+ default:
+ $this->warning('unhandled IFD field type '.$CurrentIFD['fields'][$i]['raw']['type'].' for IFD entry '.$i);
break;
}
}
}
break;
+ case 700:
+ $XMPmagic = '<?xpacket';
+ $this->fseek($fieldarray['offset']);
+ $xmpkey = (isset($info['tiff']['XMP']) ? count($info['tiff']['XMP']) : 0);
+ $info['tiff']['XMP'][$xmpkey]['raw'] = $this->fread($fieldarray['raw']['length']);
+ if (substr($info['tiff']['XMP'][$xmpkey]['raw'], 0, strlen($XMPmagic)) != $XMPmagic) {
+ $this->warning('did not find expected XMP data at offset '.$fieldarray['offset']);
+ unset($info['tiff']['XMP'][$xmpkey]['raw']);
+ }
+ break;
}
switch ($fieldarray['raw']['tag']) {
case 256: // ImageWidth
* @return string
*/
public function TIFFcompressionMethod($id) {
+ // https://en.wikipedia.org/wiki/TIFF#TIFF_Compression_Tag
static $TIFFcompressionMethod = array();
if (empty($TIFFcompressionMethod)) {
$TIFFcompressionMethod = array(
- 1 => 'Uncompressed',
- 2 => 'Huffman',
- 3 => 'Fax - CCITT 3',
- 5 => 'LZW',
- 32773 => 'PackBits',
+ 0x0001 => 'Uncompressed',
+ 0x0002 => 'Huffman',
+ 0x0003 => 'CCITT T.4',
+ 0x0004 => 'CCITT T.6',
+ 0x0005 => 'LZW',
+ 0x0006 => 'JPEG-old',
+ 0x0007 => 'JPEG',
+ 0x0008 => 'deflate',
+ 0x0009 => 'JBIG ITU-T T.85',
+ 0x000A => 'JBIG ITU-T T.43',
+ 0x7FFE => 'NeXT RLE 2-bit',
+ 0x8005 => 'PackBits',
+ 0x8029 => 'ThunderScan RLE 4-bit',
+ 0x807F => 'RasterPadding',
+ 0x8080 => 'RLE-LW',
+ 0x8081 => 'RLE-CT',
+ 0x8082 => 'RLE-BL',
+ 0x80B2 => 'deflate-PK',
+ 0x80B3 => 'Kodak-DCS',
+ 0x8765 => 'JBIG',
+ 0x8798 => 'JPEG2000',
+ 0x8799 => 'Nikon NEF',
+ 0x879B => 'JBIG2',
);
}
return (isset($TIFFcompressionMethod[$id]) ? $TIFFcompressionMethod[$id] : 'unknown/invalid ('.$id.')');
dépôts / lhc / web / www.git / blobdiff