| 1 | #------------------------------------------------------------------------------
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| 2 | # File: Validate.pm
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| 3 | #
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| 4 | # Description: Additional metadata validation
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| 5 | #
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| 6 | # Created: 2017/01/18 - P. Harvey
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| 7 | #
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| 8 | # Notes: My apologies for the convoluted logic contained herein, but it
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| 9 | # is done this way to retro-fit the Validate feature into the
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| 10 | # existing ExifTool code while reducing the possibility of
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| 11 | # introducing bugs or slowing down processing when this feature
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| 12 | # is not used.
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| 13 | #------------------------------------------------------------------------------
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| 14 |
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| 15 | package Image::ExifTool::Validate;
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| 16 |
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| 17 | use strict;
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| 18 | use vars qw($VERSION %exifSpec);
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| 19 |
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| 20 | $VERSION = '1.18';
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| 21 |
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| 22 | use Image::ExifTool qw(:Utils);
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| 23 | use Image::ExifTool::Exif;
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| 24 |
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| 25 | # EXIF table tag ID's which are part of the EXIF 2.32 specification
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| 26 | # (with ExifVersion numbers for tags where I can determine the version)
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| 27 | # (also used by BuildTagLookup to add underlines in HTML version of EXIF Tag Table)
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| 28 | %exifSpec = (
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| 29 | 0x1 => 210,
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| 30 | 0x100 => 1, 0x8298 => 1, 0x9207 => 1, 0xa217 => 1,
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| 31 | 0x101 => 1, 0x829a => 1, 0x9208 => 1, 0xa300 => 1,
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| 32 | 0x102 => 1, 0x829d => 1, 0x9209 => 1, 0xa301 => 1,
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| 33 | 0x103 => 1, 0x8769 => 1, 0x920a => 1, 0xa302 => 1,
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| 34 | 0x106 => 1, 0x8822 => 1, 0x9214 => 220, 0xa401 => 220,
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| 35 | 0x10e => 1, 0x8824 => 1, 0x927c => 1, 0xa402 => 220,
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| 36 | 0x10f => 1, 0x8825 => 200, 0x9286 => 1, 0xa403 => 220,
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| 37 | 0x110 => 1, 0x8827 => 1, 0x9290 => 1, 0xa404 => 220,
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| 38 | 0x111 => 1, 0x8828 => 1, 0x9291 => 1, 0xa405 => 220,
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| 39 | 0x112 => 1, 0x8830 => 230, 0x9292 => 1, 0xa406 => 220,
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| 40 | 0x115 => 1, 0x8831 => 230, 0x9400 => 231, 0xa407 => 220,
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| 41 | 0x116 => 1, 0x8832 => 230, 0x9401 => 231, 0xa408 => 220,
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| 42 | 0x117 => 1, 0x8833 => 230, 0x9402 => 231, 0xa409 => 220,
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| 43 | 0x11a => 1, 0x8834 => 230, 0x9403 => 231, 0xa40a => 220,
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| 44 | 0x11b => 1, 0x8835 => 230, 0x9404 => 231, 0xa40b => 220,
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| 45 | 0x11c => 1, 0x9000 => 1, 0x9405 => 231, 0xa40c => 220,
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| 46 | 0x128 => 1, 0x9003 => 1, 0xa000 => 1, 0xa460 => 232,
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| 47 | 0x12d => 1, 0x9004 => 1, 0xa001 => 1, 0xa461 => 232,
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| 48 | 0x131 => 1, 0x9010 => 231, 0xa002 => 1, 0xa462 => 232,
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| 49 | 0x132 => 1, 0x9011 => 231, 0xa003 => 1, 0xa420 => 220,
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| 50 | 0x13b => 1, 0x9012 => 231, 0xa004 => 1, 0xa430 => 230,
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| 51 | 0x13e => 1, 0x9101 => 1, 0xa005 => 210, 0xa431 => 230,
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| 52 | 0x13f => 1, 0x9102 => 1, 0xa20b => 1, 0xa432 => 230,
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| 53 | 0x201 => 1, 0x9201 => 1, 0xa20c => 1, 0xa433 => 230,
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| 54 | 0x202 => 1, 0x9202 => 1, 0xa20e => 1, 0xa434 => 230,
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| 55 | 0x211 => 1, 0x9203 => 1, 0xa20f => 1, 0xa435 => 230,
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| 56 | 0x212 => 1, 0x9204 => 1, 0xa210 => 1, 0xa500 => 221,
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| 57 | 0x213 => 1, 0x9205 => 1, 0xa214 => 1,
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| 58 | 0x214 => 1, 0x9206 => 1, 0xa215 => 1,
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| 59 | );
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| 60 |
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| 61 | # GPSVersionID numbers when each tag was introduced
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| 62 | my %gpsVer = (
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| 63 | 0x01 => 2000, 0x09 => 2000, 0x11 => 2000, 0x19 => 2000,
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| 64 | 0x02 => 2000, 0x0a => 2000, 0x12 => 2000, 0x1a => 2000,
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| 65 | 0x03 => 2000, 0x0b => 2000, 0x13 => 2000, 0x1b => 2200,
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| 66 | 0x04 => 2000, 0x0c => 2000, 0x14 => 2000, 0x1c => 2200,
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| 67 | 0x05 => 2000, 0x0d => 2000, 0x15 => 2000, 0x1d => 2200,
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| 68 | 0x06 => 2000, 0x0e => 2000, 0x16 => 2000, 0x1e => 2200,
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| 69 | 0x07 => 2000, 0x0f => 2000, 0x17 => 2000, 0x1f => 2300,
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| 70 | 0x08 => 2000, 0x10 => 2000, 0x18 => 2000,
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| 71 | );
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| 72 |
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| 73 | # lookup to check version numbers
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| 74 | my %verCheck = (
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| 75 | ExifIFD => { ExifVersion => \%exifSpec },
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| 76 | InteropIFD => { ExifVersion => \%exifSpec },
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| 77 | GPS => { GPSVersionID => \%gpsVer },
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| 78 | );
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| 79 |
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| 80 | # tags standard in various RAW file formats
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| 81 | my %otherSpec = (
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| 82 | CR2 => { 0xc5d8 => 1, 0xc5d9 => 1, 0xc5e0 => 1, 0xc640 => 1, 0xc6dc => 1, 0xc6dd => 1 },
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| 83 | NEF => { 0x9216 => 1, 0x9217 => 1 },
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| 84 | DNG => { 0x882a => 1, 0x9211 => 1, 0x9216 => 1 },
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| 85 | ARW => { 0x7000 => 1, 0x7001 => 1, 0x7010 => 1, 0x7011 => 1, 0x7020 => 1,
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| 86 | 0x7031 => 1, 0x7032 => 1, 0x7034 => 1, 0x7035 => 1, 0x7036 => 1, 0x7037 => 1,
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| 87 | 0x7310 => 1, 0x7313 => 1, 0x7316 => 1, 0x74c7 => 1, 0x74c8 => 1, 0xa500 => 1 },
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| 88 | RW2 => { All => 1 }, # ignore all unknown tags in RW2
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| 89 | RWL => { All => 1 },
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| 90 | RAF => { All => 1 }, # (temporary)
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| 91 | DCR => { All => 1 },
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| 92 | KDC => { All => 1 },
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| 93 | JXR => { All => 1 },
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| 94 | SRW => { 0xa010 => 1, 0xa011 => 1, 0xa101 => 1, 0xa102 => 1 },
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| 95 | NRW => { 0x9216 => 1, 0x9217 => 1 },
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| 96 | X3F => { 0xa500 => 1 },
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| 97 | );
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| 98 |
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| 99 | # standard format for tags (not necessary for exifSpec or GPS tags where Writable is defined)
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| 100 | my %stdFormat = (
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| 101 | ExifIFD => {
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| 102 | 0xa002 => 'int(16|32)u',
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| 103 | 0xa003 => 'int(16|32)u',
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| 104 | },
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| 105 | InteropIFD => {
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| 106 | 0x01 => 'string',
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| 107 | 0x02 => 'undef',
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| 108 | 0x1000 => 'string',
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| 109 | 0x1001 => 'int(16|32)u',
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| 110 | 0x1002 => 'int(16|32)u',
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| 111 | },
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| 112 | IFD => {
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| 113 | # TIFF, EXIF, XMP, IPTC, ICC_Profile and PrintIM standard tags:
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| 114 | 0xfe => 'int32u', 0x11f => 'rational64u', 0x14a => 'int32u', 0x205 => 'int16u',
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| 115 | 0xff => 'int16u', 0x120 => 'int32u', 0x14c => 'int16u', 0x206 => 'int16u',
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| 116 | 0x100 => 'int(16|32)u', 0x121 => 'int32u', 0x14d => 'string', 0x207 => 'int32u',
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| 117 | 0x101 => 'int(16|32)u', 0x122 => 'int16u', 0x14e => 'int16u', 0x208 => 'int32u',
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| 118 | 0x107 => 'int16u', 0x123 => 'int16u', 0x150 => 'int(8|16)u', 0x209 => 'int32u',
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| 119 | 0x108 => 'int16u', 0x124 => 'int32u', 0x151 => 'string', 0x211 => 'rational64u',
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| 120 | 0x109 => 'int16u', 0x125 => 'int32u', 0x152 => 'int16u', 0x212 => 'int16u',
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| 121 | 0x10a => 'int16u', 0x129 => 'int16u', 0x153 => 'int16u', 0x213 => 'int16u',
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| 122 | 0x10d => 'string', 0x13c => 'string', 0x154 => '.*', 0x214 => 'rational64u',
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| 123 | 0x111 => 'int(16|32)u', 0x13d => 'int16u', 0x155 => '.*', 0x2bc => 'int8u',
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| 124 | 0x116 => 'int(16|32)u', 0x140 => 'int16u', 0x156 => 'int16u', 0x828d => 'int16u',
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| 125 | 0x117 => 'int(16|32)u', 0x141 => 'int16u', 0x15b => 'undef', 0x828e => 'int8u',
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| 126 | 0x118 => 'int16u', 0x142 => 'int(16|32)u', 0x200 => 'int16u', 0x83bb => 'int32u',
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| 127 | 0x119 => 'int16u', 0x143 => 'int(16|32)u', 0x201 => 'int32u', 0x8649 => 'int8u',
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| 128 | 0x11d => 'string', 0x144 => 'int32u', 0x202 => 'int32u', 0x8773 => 'undef',
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| 129 | 0x11e => 'rational64u', 0x145 => 'int(16|32)u', 0x203 => 'int16u', 0xc4a5 => 'undef',
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| 130 | # Windows Explorer tags:
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| 131 | 0x9c9b => 'int8u', 0x9c9d => 'int8u', 0x9c9f => 'int8u',
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| 132 | 0x9c9c => 'int8u', 0x9c9e => 'int8u',
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| 133 | # GeoTiff tags:
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| 134 | 0x830e => 'double', 0x8482 => 'double', 0x87af => 'int16u', 0x87b1 => 'string',
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| 135 | 0x8480 => 'double', 0x85d8 => 'double', 0x87b0 => 'double',
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| 136 | # DNG tags:
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| 137 | 0xc615 => '(string|int8u)', 0xc6d3 => '',
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| 138 | 0xc61a => '(int16u|int32u|rational64u)', 0xc6f4 => '(string|int8u)',
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| 139 | 0xc61d => 'int(16|32)u', 0xc6f6 => '(string|int8u)',
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| 140 | 0xc61f => '(int16u|int32u|rational64u)', 0xc6f8 => '(string|int8u)',
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| 141 | 0xc620 => '(int16u|int32u|rational64u)', 0xc6fe => '(string|int8u)',
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| 142 | 0xc628 => '(int16u|rational64u)', 0xc716 => '(string|int8u)',
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| 143 | 0xc634 => 'int8u', 0xc717 => '(string|int8u)',
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| 144 | 0xc640 => '', 0xc718 => '(string|int8u)',
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| 145 | 0xc660 => '', 0xc71e => 'int(16|32)u',
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| 146 | 0xc68b => '(string|int8u)', 0xc71f => 'int(16|32)u',
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| 147 | 0xc68d => 'int(16|32)u', 0xc791 => 'int(16|32)u',
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| 148 | 0xc68e => 'int(16|32)u', 0xc792 => 'int(16|32)u',
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| 149 | 0xc6d2 => '', 0xc793 => '(int16u|int32u|rational64u)',
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| 150 | },
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| 151 | );
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| 152 |
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| 153 | # generate lookup for any IFD
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| 154 | my %stdFormatAnyIFD = map { %{$stdFormat{$_}} } keys %stdFormat;
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| 155 |
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| 156 | # tag values to validate based on file type (from EXIF specification)
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| 157 | # - validation code may access $val and %val, and returns 1 on success,
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| 158 | # or error message otherwise ('' for a generic message)
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| 159 | # - entry is undef if tag must not exist (same as 'not defined $val' in code)
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| 160 | my %validValue = (
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| 161 | JPEG => {
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| 162 | IFD0 => {
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| 163 | 0x100 => undef, # ImageWidth
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| 164 | 0x101 => undef, # ImageLength
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| 165 | 0x102 => undef, # BitsPerSample
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| 166 | 0x103 => undef, # Compression
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| 167 | 0x106 => undef, # PhotometricInterpretation
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| 168 | 0x111 => undef, # StripOffsets
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| 169 | 0x115 => undef, # SamplesPerPixel
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| 170 | 0x116 => undef, # RowsPerStrip
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| 171 | 0x117 => undef, # StripByteCounts
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| 172 | 0x11a => 'defined $val', # XResolution
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| 173 | 0x11b => 'defined $val', # YResolution
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| 174 | 0x11c => undef, # PlanarConfiguration
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| 175 | 0x128 => '$val =~ /^[123]$/', # ResolutionUnit
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| 176 | 0x201 => undef, # JPEGInterchangeFormat
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| 177 | 0x202 => undef, # JPEGInterchangeFormatLength
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| 178 | 0x212 => undef, # YCbCrSubSampling
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| 179 | 0x213 => '$val =~ /^[12]$/', # YCbCrPositioning
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| 180 | },
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| 181 | IFD1 => {
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| 182 | 0x100 => undef, # ImageWidth
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| 183 | 0x101 => undef, # ImageLength
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| 184 | 0x102 => undef, # BitsPerSample
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| 185 | 0x103 => '$val == 6', # Compression
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| 186 | 0x106 => undef, # PhotometricInterpretation
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| 187 | 0x111 => undef, # StripOffsets
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| 188 | 0x115 => undef, # SamplesPerPixel
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| 189 | 0x116 => undef, # RowsPerStrip
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| 190 | 0x117 => undef, # StripByteCounts
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| 191 | 0x11a => 'defined $val', # XResolution
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| 192 | 0x11b => 'defined $val', # YResolution
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| 193 | 0x11c => undef, # PlanarConfiguration
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| 194 | 0x128 => '$val =~ /^[123]$/', # ResolutionUnit
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| 195 | 0x201 => 'defined $val', # JPEGInterchangeFormat
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| 196 | 0x202 => 'defined $val', # JPEGInterchangeFormatLength
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| 197 | 0x212 => undef, # YCbCrSubSampling
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| 198 | },
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| 199 | ExifIFD => {
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| 200 | 0x9000 => 'defined $val and $val =~ /^\d{4}$/', # ExifVersion
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| 201 | 0x9101 => 'defined $val', # ComponentsConfiguration
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| 202 | 0xa000 => 'defined $val', # FlashpixVersion
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| 203 | 0xa001 => '$val == 1 or $val == 0xffff', # ColorSpace
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| 204 | 0xa002 => 'defined $val', # PixelXDimension
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| 205 | 0xa003 => 'defined $val', # PixelYDimension
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| 206 | },
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| 207 | GPS => {
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| 208 | 0x00 => 'defined $val and $val =~ /^\d \d \d \d$/', # GPSVersionID
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| 209 | 0x1b => 'not defined $val or $val =~ /^(GPS|CELLID|WLAN|MANUAL)$/', # GPSProcessingMethod
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| 210 | },
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| 211 | InteropIFD => { }, # (needed for ExifVersion check)
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| 212 | },
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| 213 | TIFF => {
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| 214 | IFD0 => {
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| 215 | 0x100 => 'defined $val', # ImageWidth
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| 216 | 0x101 => 'defined $val', # ImageLength
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| 217 | # (default is 1) 0x102 => 'defined $val', # BitsPerSample
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| 218 | 0x103 => q{
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| 219 | not defined $val or $val =~ /^(1|5|6|32773)$/ or
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| 220 | ($val == 2 and (not defined $val{0x102} or $val{0x102} == 1));
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| 221 | }, # Compression
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| 222 | 0x106 => '$val =~ /^[0123]$/', # PhotometricInterpretation
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| 223 | 0x111 => 'defined $val', # StripOffsets
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| 224 | # SamplesPerPixel
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| 225 | 0x115 => q{
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| 226 | my $pi = $val{0x106} || 0;
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| 227 | my $xtra = ($val{0x152} ? scalar(split ' ', $val{0x152}) : 0);
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| 228 | if ($pi == 2 or $pi == 6) {
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| 229 | return $val == 3 + $xtra;
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| 230 | } elsif ($pi == 5) {
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| 231 | return $val == 4 + $xtra;
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| 232 | } else {
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| 233 | return 1;
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| 234 | }
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| 235 | },
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| 236 | 0x116 => 'defined $val', # RowsPerStrip
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| 237 | 0x117 => 'defined $val', # StripByteCounts
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| 238 | 0x11a => 'defined $val', # XResolution
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| 239 | 0x11b => 'defined $val', # YResolution
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| 240 | 0x128 => 'not defined $val or $val =~ /^[123]$/', # ResolutionUnit
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| 241 | # ColorMap (must be palette image with correct number of colors)
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| 242 | 0x140 => q{
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| 243 | return '' if defined $val{0x106} and $val{0x106} == 3 xor defined $val;
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| 244 | return 1 if not defined $val or length($val) == 6 * 2 ** ($val{0x102} || 0);
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| 245 | return 'Invalid count for';
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| 246 | },
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| 247 | 0x201 => undef, # JPEGInterchangeFormat
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| 248 | 0x202 => undef, # JPEGInterchangeFormatLength
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| 249 | },
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| 250 | ExifIFD => {
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| 251 | 0x9000 => 'defined $val', # ExifVersion
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| 252 | 0x9101 => undef, # ComponentsConfiguration
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| 253 | 0x9102 => undef, # CompressedBitsPerPixel
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| 254 | 0xa000 => 'defined $val', # FlashpixVersion
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| 255 | 0xa001 => '$val == 1 or $val == 0xffff', # ColorSpace
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| 256 | 0xa002 => undef, # PixelXDimension
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| 257 | 0xa003 => undef, # PixelYDimension
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| 258 | },
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| 259 | InteropIFD => {
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| 260 | 0x0001 => undef, # InteropIndex
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| 261 | },
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| 262 | GPS => {
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| 263 | 0x00 => 'defined $val and $val =~ /^\d \d \d \d$/', # GPSVersionID
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| 264 | 0x1b => '$val =~ /^(GPS|CELLID|WLAN|MANUAL)$/', # GPSProcessingMethod
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| 265 | },
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| 266 | },
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| 267 | );
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| 268 |
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| 269 | # validity ranges for constrained date/time fields
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| 270 | my @validDateField = (
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| 271 | [ 'Month', 1, 12 ],
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| 272 | [ 'Day', 1, 31 ],
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| 273 | [ 'Hour', 0, 23 ],
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| 274 | [ 'Minutes', 0, 59 ],
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| 275 | [ 'Seconds', 0, 59 ],
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| 276 | [ 'TZhr', 0, 14 ],
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| 277 | [ 'TZmin', 0, 59 ],
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| 278 | );
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| 279 |
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| 280 | # "Validate" tag information
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| 281 | my %validateInfo = (
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| 282 | Groups => { 0 => 'ExifTool', 1 => 'ExifTool', 2 => 'ExifTool' },
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| 283 | Notes => q{
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| 284 | generated only if specifically requested. Requesting this tag automatically
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| 285 | enables the API L<Validate|../ExifTool.html#Validate> option, imposing
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| 286 | additional validation checks when extracting metadata. Returns the number
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| 287 | of errors, warnings and minor warnings encountered. Note that the Validate
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| 288 | feature focuses mainly on validation of EXIF/TIFF metadata
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| 289 | },
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| 290 | PrintConv => {
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| 291 | '0 0 0' => 'OK',
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| 292 | OTHER => sub {
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| 293 | my @val = split ' ', shift;
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| 294 | my @rtn;
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| 295 | push @rtn, sprintf('%d Error%s', $val[0], $val[0] == 1 ? '' : 's') if $val[0];
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| 296 | push @rtn, sprintf('%d Warning%s', $val[1], $val[1] == 1 ? '' : 's') if $val[1];
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| 297 | if ($val[2]) {
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| 298 | my $str = ($val[1] == $val[2] ? ($val[1] == 1 ? '' : 'all ') : "$val[2] ");
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| 299 | $rtn[-1] .= " (${str}minor)";
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| 300 | }
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| 301 | return join(' and ', @rtn);
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| 302 | },
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| 303 | },
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| 304 | );
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| 305 |
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| 306 | # add "Validate" tag to Extra table
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| 307 | AddTagToTable(\%Image::ExifTool::Extra, Validate => \%validateInfo, 1);
|
|---|
| 308 |
|
|---|
| 309 | #------------------------------------------------------------------------------
|
|---|
| 310 | # Validate the raw value of a tag
|
|---|
| 311 | # Inputs: 0) ExifTool ref, 1) tag key, 2) raw tag value
|
|---|
| 312 | # Returns: nothing, but issues a minor Warning if a problem was detected
|
|---|
| 313 | sub ValidateRaw($$$)
|
|---|
| 314 | {
|
|---|
| 315 | my ($self, $tag, $val) = @_;
|
|---|
| 316 | my $tagInfo = $$self{TAG_INFO}{$tag};
|
|---|
| 317 | my $wrn;
|
|---|
| 318 |
|
|---|
| 319 | # evaluate Validate code if specified
|
|---|
| 320 | if ($$tagInfo{Validate}) {
|
|---|
| 321 | local $SIG{'__WARN__'} = \&Image::ExifTool::SetWarning;
|
|---|
| 322 | undef $Image::ExifTool::evalWarning;
|
|---|
| 323 | #### eval Validate ($self, $val, $tagInfo)
|
|---|
| 324 | my $wrn = eval $$tagInfo{Validate};
|
|---|
| 325 | my $err = $Image::ExifTool::evalWarning || $@;
|
|---|
| 326 | if ($wrn or $err) {
|
|---|
| 327 | my $name = $$tagInfo{Table}{GROUPS}{0} . ':' . Image::ExifTool::GetTagName($tag);
|
|---|
| 328 | $self->Warn("Validate $name: $err", 1) if $err;
|
|---|
| 329 | $self->Warn("$wrn for $name", 1) if $wrn;
|
|---|
| 330 | }
|
|---|
| 331 | }
|
|---|
| 332 | # check for unknown values in PrintConv lookup for all standard EXIF tags
|
|---|
| 333 | if (ref $$tagInfo{PrintConv} eq 'HASH' and ($$tagInfo{Table}{SHORT_NAME} eq 'GPS::Main' or
|
|---|
| 334 | ($$tagInfo{Table} eq \%Image::ExifTool::Exif::Main and $exifSpec{$$tagInfo{TagID}})))
|
|---|
| 335 | {
|
|---|
| 336 | my $prt = $self->GetValue($tag, 'PrintConv');
|
|---|
| 337 | $wrn = 'Unknown value for' if $prt and $prt =~ /^Unknown \(/;
|
|---|
| 338 | }
|
|---|
| 339 | $wrn = 'Undefined value for' if $val eq 'undef';
|
|---|
| 340 | if ($wrn) {
|
|---|
| 341 | my $name = $$self{DIR_NAME} . ':' . Image::ExifTool::GetTagName($tag);
|
|---|
| 342 | $self->Warn("$wrn $name", 1);
|
|---|
| 343 | }
|
|---|
| 344 | }
|
|---|
| 345 |
|
|---|
| 346 | #------------------------------------------------------------------------------
|
|---|
| 347 | # Validate raw EXIF date/time value
|
|---|
| 348 | # Inputs: 0) date/time value
|
|---|
| 349 | # Returns: error string
|
|---|
| 350 | sub ValidateExifDate($)
|
|---|
| 351 | {
|
|---|
| 352 | my $val = shift;
|
|---|
| 353 | if ($val =~ /^\d{4}:(\d{2}):(\d{2}) (\d{2}):(\d{2}):(\d{2})$/) {
|
|---|
| 354 | my @a = ($1,$2,$3,$4,$5);
|
|---|
| 355 | my ($i, @bad);
|
|---|
| 356 | for ($i=0; $i<@a; ++$i) {
|
|---|
| 357 | next if $a[$i] eq ' ' or ($a[$i] >= $validDateField[$i][1] and $a[$i] <= $validDateField[$i][2]);
|
|---|
| 358 | push @bad, $validDateField[$i][0];
|
|---|
| 359 | }
|
|---|
| 360 | return join('+', @bad) . ' out of range' if @bad;
|
|---|
| 361 | # the EXIF specification allows blank fields or an entire blank value
|
|---|
| 362 | } elsif ($val ne ' : : : : ' and $val ne ' ') {
|
|---|
| 363 | return 'Invalid date/time format';
|
|---|
| 364 | }
|
|---|
| 365 | return undef; # OK!
|
|---|
| 366 | }
|
|---|
| 367 |
|
|---|
| 368 | #------------------------------------------------------------------------------
|
|---|
| 369 | # Validate EXIF-reformatted XMP date/time value
|
|---|
| 370 | # Inputs: 0) date/time value
|
|---|
| 371 | # Returns: error string
|
|---|
| 372 | sub ValidateXMPDate($)
|
|---|
| 373 | {
|
|---|
| 374 | my $val = shift;
|
|---|
| 375 | if ($val =~ /^\d{4}$/ or
|
|---|
| 376 | $val =~ /^\d{4}:(\d{2})$/ or
|
|---|
| 377 | $val =~ /^\d{4}:(\d{2}):(\d{2})$/ or
|
|---|
| 378 | $val =~ /^\d{4}:(\d{2}):(\d{2}) (\d{2}):(\d{2})()(Z|[-+](\d{2}):(\d{2}))?$/ or
|
|---|
| 379 | $val =~ /^\d{4}:(\d{2}):(\d{2}) (\d{2}):(\d{2}):(\d{2})(Z|[-+](\d{2}):(\d{2}))?$/ or
|
|---|
| 380 | $val =~ /^\d{4}:(\d{2}):(\d{2}) (\d{2}):(\d{2}):(\d{2})\.?\d*(Z|[-+](\d{2}):(\d{2}))?$/)
|
|---|
| 381 | {
|
|---|
| 382 | my @a = ($1,$2,$3,$4,$5,$7,$8);
|
|---|
| 383 | my ($i, @bad);
|
|---|
| 384 | for ($i=0; $i<@a; ++$i) {
|
|---|
| 385 | last unless defined $a[$i];
|
|---|
| 386 | next if $a[$i] eq '' or ($a[$i] >= $validDateField[$i][1] and $a[$i] <= $validDateField[$i][2]);
|
|---|
| 387 | push @bad, $validDateField[$i][0];
|
|---|
| 388 | }
|
|---|
| 389 | return join('+', @bad) . ' out of range' if @bad;
|
|---|
| 390 | } else {
|
|---|
| 391 | return 'Invalid date/time format';
|
|---|
| 392 | }
|
|---|
| 393 | return undef; # OK!
|
|---|
| 394 | }
|
|---|
| 395 |
|
|---|
| 396 | #------------------------------------------------------------------------------
|
|---|
| 397 | # Validate EXIF tag
|
|---|
| 398 | # Inputs: 0) ExifTool ref, 1) tag table ref, 2) tag ID, 3) tagInfo ref,
|
|---|
| 399 | # 4) previous tag ID, 5) IFD name, 6) number of values, 7) value format string
|
|---|
| 400 | # Returns: Nothing, but sets Warning tags if any problems are found
|
|---|
| 401 | sub ValidateExif($$$$$$$$)
|
|---|
| 402 | {
|
|---|
| 403 | my ($et, $tagTablePtr, $tag, $tagInfo, $lastTag, $ifd, $count, $formatStr) = @_;
|
|---|
| 404 |
|
|---|
| 405 | $et->WarnOnce("Entries in $ifd are out of order") if $tag <= $lastTag;
|
|---|
| 406 |
|
|---|
| 407 | # (get tagInfo for unknown tags if Unknown option not used)
|
|---|
| 408 | if (not defined $tagInfo and $$tagTablePtr{$tag} and ref $$tagTablePtr{$tag} eq 'HASH') {
|
|---|
| 409 | $tagInfo = $$tagTablePtr{$tag};
|
|---|
| 410 | }
|
|---|
| 411 | if (defined $tagInfo) {
|
|---|
| 412 | my $ti = $tagInfo || $$tagTablePtr{$tag};
|
|---|
| 413 | $ti = $$ti[-1] if ref $ti eq 'ARRAY';
|
|---|
| 414 | my $stdFmt = $stdFormat{$ifd} || $stdFormat{IFD};
|
|---|
| 415 | if (defined $$stdFmt{All} or ($tagTablePtr eq \%Image::ExifTool::Exif::Main and
|
|---|
| 416 | ($exifSpec{$tag} or $$stdFmt{$tag} or
|
|---|
| 417 | ($tag >= 0xc612 and $tag <= 0xc7b5 and not defined $$stdFmt{$tag}))) or # (DNG tags)
|
|---|
| 418 | $$tagTablePtr{SHORT_NAME} eq 'GPS::Main')
|
|---|
| 419 | {
|
|---|
| 420 | my $wgp = $$ti{WriteGroup} || $$tagTablePtr{WRITE_GROUP};
|
|---|
| 421 | if ($wgp and $wgp ne $ifd and $wgp ne 'All' and not $$ti{OffsetPair} and
|
|---|
| 422 | ($ifd =~ /^(Sub|Profile)?IFD\d*$/ xor $wgp =~ /^(Sub)?IFD\d*$/) and
|
|---|
| 423 | ($$ti{Writable} or $$ti{WriteGroup}) and $ifd !~ /^SRF\d+$/)
|
|---|
| 424 | {
|
|---|
| 425 | $et->Warn(sprintf('Wrong IFD for 0x%.4x %s (should be %s not %s)', $tag, $$ti{Name}, $wgp, $ifd));
|
|---|
| 426 | }
|
|---|
| 427 | my $fmt = $$stdFmt{$tag} || $$ti{Writable};
|
|---|
| 428 | if ($fmt and $formatStr !~ /^$fmt$/ and (not $tagInfo or
|
|---|
| 429 | not $$tagInfo{IsOffset} or $Image::ExifTool::Exif::intFormat{$formatStr}))
|
|---|
| 430 | {
|
|---|
| 431 | $et->Warn(sprintf('Non-standard format (%s) for %s 0x%.4x %s', $formatStr, $ifd, $tag, $$ti{Name}))
|
|---|
| 432 | }
|
|---|
| 433 | } elsif ($stdFormatAnyIFD{$tag}) {
|
|---|
| 434 | if ($$ti{Writable} || $$ti{WriteGroup}) {
|
|---|
| 435 | my $wgp = $$ti{WriteGroup} || $$tagTablePtr{WRITE_GROUP};
|
|---|
| 436 | if ($wgp and $wgp ne $ifd) {
|
|---|
| 437 | $et->Warn(sprintf('Wrong IFD for 0x%.4x %s (should be %s not %s)', $tag, $$ti{Name}, $wgp, $ifd));
|
|---|
| 438 | }
|
|---|
| 439 | }
|
|---|
| 440 | } elsif (not $otherSpec{$$et{VALUE}{FileType}} or
|
|---|
| 441 | (not $otherSpec{$$et{VALUE}{FileType}}{$tag} and not $otherSpec{$$et{VALUE}{FileType}}{All}))
|
|---|
| 442 | {
|
|---|
| 443 | if ($tagTablePtr eq \%Image::ExifTool::Exif::Main or $$tagInfo{Unknown}) {
|
|---|
| 444 | $et->Warn(sprintf('Non-standard %s tag 0x%.4x %s', $ifd, $tag, $$ti{Name}), 1);
|
|---|
| 445 | }
|
|---|
| 446 | }
|
|---|
| 447 | # change expected count from read Format to Writable size
|
|---|
| 448 | my $tiCount = $$ti{Count};
|
|---|
| 449 | if ($tiCount) {
|
|---|
| 450 | if ($$ti{Format} and $$ti{Writable} and
|
|---|
| 451 | $Image::ExifTool::Exif::formatNumber{$$ti{Format}} and
|
|---|
| 452 | $Image::ExifTool::Exif::formatNumber{$$ti{Writable}})
|
|---|
| 453 | {
|
|---|
| 454 | my $s1 = $Image::ExifTool::Exif::formatSize[$Image::ExifTool::Exif::formatNumber{$$ti{Format}}];
|
|---|
| 455 | my $s2 = $Image::ExifTool::Exif::formatSize[$Image::ExifTool::Exif::formatNumber{$$ti{Writable}}];
|
|---|
| 456 | $tiCount = int($tiCount * $s1 / $s2);
|
|---|
| 457 | }
|
|---|
| 458 | if ($tiCount > 0 and $count != $tiCount) {
|
|---|
| 459 | $et->Warn(sprintf('Non-standard count (%d) for %s 0x%.4x %s', $count, $ifd, $tag, $$ti{Name}));
|
|---|
| 460 | }
|
|---|
| 461 | }
|
|---|
| 462 | } elsif (not $otherSpec{$$et{VALUE}{FileType}} or
|
|---|
| 463 | (not $otherSpec{$$et{VALUE}{FileType}}{$tag} and not $otherSpec{$$et{VALUE}{FileType}}{All}))
|
|---|
| 464 | {
|
|---|
| 465 | $et->Warn(sprintf('Unknown %s tag 0x%.4x', $ifd, $tag), 1);
|
|---|
| 466 | }
|
|---|
| 467 | }
|
|---|
| 468 |
|
|---|
| 469 | #------------------------------------------------------------------------------
|
|---|
| 470 | # Validate image data offsets/sizes
|
|---|
| 471 | # Inputs: 0) ExifTool ref, 1) offset info hash ref (arrays of tagInfo/value pairs, keyed by tagID)
|
|---|
| 472 | # 2) directory name, 3) optional flag for minor warning
|
|---|
| 473 | sub ValidateOffsetInfo($$$;$)
|
|---|
| 474 | {
|
|---|
| 475 | local $_;
|
|---|
| 476 | my ($et, $offsetInfo, $dirName, $minor) = @_;
|
|---|
| 477 |
|
|---|
| 478 | my $fileSize = $$et{VALUE}{FileSize} or return;
|
|---|
| 479 |
|
|---|
| 480 | # (don't test RWZ files and some other file types)
|
|---|
| 481 | return if $$et{DontValidateImageData};
|
|---|
| 482 | # (Minolta A200 uses wrong byte order for these)
|
|---|
| 483 | return if $$et{TIFF_TYPE} eq 'MRW' and $dirName eq 'IFD0' and $$et{Model} =~ /^DiMAGE A200/;
|
|---|
| 484 | # (don't test 3FR, RWL or RW2 files)
|
|---|
| 485 | return if $$et{TIFF_TYPE} =~ /^(3FR|RWL|RW2)$/;
|
|---|
| 486 |
|
|---|
| 487 | Image::ExifTool::Exif::ValidateImageData($et, $offsetInfo, $dirName);
|
|---|
| 488 |
|
|---|
| 489 | # loop through all offsets
|
|---|
| 490 | while (%$offsetInfo) {
|
|---|
| 491 | my ($id1) = sort keys %$offsetInfo;
|
|---|
| 492 | my $offsets = $$offsetInfo{$id1};
|
|---|
| 493 | delete $$offsetInfo{$id1};
|
|---|
| 494 | next unless ref $offsets eq 'ARRAY';
|
|---|
| 495 | my $id2 = $$offsets[0]{OffsetPair};
|
|---|
| 496 | unless (defined $id2 and $$offsetInfo{$id2}) {
|
|---|
| 497 | unless ($$offsets[0]{NotRealPair} or (defined $id2 and $id2 == -1)) {
|
|---|
| 498 | my $corr = $$offsets[0]{IsOffset} ? 'size' : 'offset';
|
|---|
| 499 | $et->Warn("$dirName:$$offsets[0]{Name} is missing the corresponding $corr tag") unless $minor;
|
|---|
| 500 | }
|
|---|
| 501 | next;
|
|---|
| 502 | }
|
|---|
| 503 | my $sizes = $$offsetInfo{$id2};
|
|---|
| 504 | delete $$offsetInfo{$id2};
|
|---|
| 505 | ($sizes, $offsets) = ($offsets, $sizes) if $$sizes[0]{IsOffset};
|
|---|
| 506 | my @offsets = split ' ', $$offsets[1];
|
|---|
| 507 | my @sizes = split ' ', $$sizes[1];
|
|---|
| 508 | if (@sizes != @offsets) {
|
|---|
| 509 | $et->Warn(sprintf('Wrong number of values in %s 0x%.4x %s',
|
|---|
| 510 | $dirName, $$offsets[0]{TagID}, $$offsets[0]{Name}), $minor);
|
|---|
| 511 | next;
|
|---|
| 512 | }
|
|---|
| 513 | while (@offsets) {
|
|---|
| 514 | my $start = pop @offsets;
|
|---|
| 515 | my $end = $start + pop @sizes;
|
|---|
| 516 | $et->WarnOnce("$dirName:$$offsets[0]{Name} is zero", $minor) if $start == 0;
|
|---|
| 517 | $et->WarnOnce("$dirName:$$sizes[0]{Name} is zero", $minor) if $start == $end;
|
|---|
| 518 | next unless $end > $fileSize;
|
|---|
| 519 | if ($start >= $fileSize) {
|
|---|
| 520 | if ($start == 0xffffffff) {
|
|---|
| 521 | $et->Warn("$dirName:$$offsets[0]{Name} is invalid (0xffffffff)", $minor);
|
|---|
| 522 | } else {
|
|---|
| 523 | $et->Warn("$dirName:$$offsets[0]{Name} is past end of file", $minor);
|
|---|
| 524 | }
|
|---|
| 525 | } else {
|
|---|
| 526 | $et->Warn("$dirName:$$offsets[0]{Name}+$$sizes[0]{Name} runs past end of file", $minor);
|
|---|
| 527 | }
|
|---|
| 528 | last;
|
|---|
| 529 | }
|
|---|
| 530 | }
|
|---|
| 531 | }
|
|---|
| 532 |
|
|---|
| 533 | #------------------------------------------------------------------------------
|
|---|
| 534 | # Finish Validating tags
|
|---|
| 535 | # Inputs: 0) ExifTool ref, 1) True to generate Validate tag
|
|---|
| 536 | sub FinishValidate($$)
|
|---|
| 537 | {
|
|---|
| 538 | local $_;
|
|---|
| 539 | my ($et, $mkTag) = @_;
|
|---|
| 540 |
|
|---|
| 541 | my $fileType = $$et{FILE_TYPE} || '';
|
|---|
| 542 | $fileType = $$et{TIFF_TYPE} if $fileType eq 'TIFF';
|
|---|
| 543 |
|
|---|
| 544 | if ($validValue{$fileType}) {
|
|---|
| 545 | my ($grp, $tag, %val);
|
|---|
| 546 | local $SIG{'__WARN__'} = \&Image::ExifTool::SetWarning;
|
|---|
| 547 | foreach $grp (sort keys %{$validValue{$fileType}}) {
|
|---|
| 548 | next unless $$et{FOUND_DIR}{$grp};
|
|---|
| 549 | my ($key, %val, %info, $minor, $verTag, $ver, $vstr);
|
|---|
| 550 | my $verCheck = $verCheck{$grp};
|
|---|
| 551 | if ($verCheck) {
|
|---|
| 552 | ($verTag) = keys %$verCheck;
|
|---|
| 553 | ($ver = $$et{VALUE}{$verTag}) =~ tr/0-9//dc; # (remove non-digits)
|
|---|
| 554 | undef $ver unless $ver =~ /^\d{4}$/; # (already warned if invalid version)
|
|---|
| 555 | }
|
|---|
| 556 | # get all tags in this group
|
|---|
| 557 | foreach $key (sort keys %{$$et{VALUE}}) {
|
|---|
| 558 | next unless $et->GetGroup($key, 1) eq $grp;
|
|---|
| 559 | next if $$et{TAG_EXTRA}{$key} and $$et{TAG_EXTRA}{$key}{G3}; # ignore sub-documents
|
|---|
| 560 | # fill in %val lookup with values based on tag ID
|
|---|
| 561 | my $tag = $$et{TAG_INFO}{$key}{TagID};
|
|---|
| 562 | $val{$tag} = $$et{VALUE}{$key};
|
|---|
| 563 | # save TagInfo ref for later
|
|---|
| 564 | $info{$tag} = $$et{TAG_INFO}{$key};
|
|---|
| 565 | next unless defined $ver;
|
|---|
| 566 | my $chk = $$verCheck{$verTag};
|
|---|
| 567 | next if not defined $$chk{$tag} or $$chk{$tag} == 1 or $ver >= $$chk{$tag};
|
|---|
| 568 | if ($verTag eq 'GPSVersionID') {
|
|---|
| 569 | ($vstr = $$chk{$tag}) =~ s/^(\d)(\d)(\d)/$1.$2.$3./;
|
|---|
| 570 | } else {
|
|---|
| 571 | $vstr = sprintf('%.4d', $$chk{$tag});
|
|---|
| 572 | }
|
|---|
| 573 | $et->Warn(sprintf('%s tag 0x%.4x %s requires %s %s or higher',
|
|---|
| 574 | $grp, $tag, $$et{TAG_INFO}{$key}{Name}, $verTag, $vstr));
|
|---|
| 575 | }
|
|---|
| 576 | # make quick lookup for values based on tag ID
|
|---|
| 577 | my $validValue = $validValue{$fileType}{$grp};
|
|---|
| 578 | foreach $tag (sort { $a <=> $b } keys %$validValue) {
|
|---|
| 579 | my $val = $val{$tag};
|
|---|
| 580 | my ($pre, $post);
|
|---|
| 581 | if (defined $$validValue{$tag}) {
|
|---|
| 582 | #### eval ($val, %val)
|
|---|
| 583 | my $result = eval $$validValue{$tag};
|
|---|
| 584 | if (not defined $result) {
|
|---|
| 585 | $pre = 'Internal error validating';
|
|---|
| 586 | } elsif ($result eq '') {
|
|---|
| 587 | $pre = defined $val ? 'Invalid value for' : "Missing required $fileType";
|
|---|
| 588 | } else {
|
|---|
| 589 | next if $result eq '1';
|
|---|
| 590 | $pre = $result;
|
|---|
| 591 | }
|
|---|
| 592 | } else {
|
|---|
| 593 | next unless defined $val;
|
|---|
| 594 | $post = "is not allowed in $fileType";
|
|---|
| 595 | $minor = 1;
|
|---|
| 596 | }
|
|---|
| 597 | my $name;
|
|---|
| 598 | if ($info{$tag}) {
|
|---|
| 599 | $name = $info{$tag}{Name};
|
|---|
| 600 | } else {
|
|---|
| 601 | my $table = 'Image::ExifTool::'.($grp eq 'GPS' ? 'GPS' : 'Exif').'::Main';
|
|---|
| 602 | my $tagInfo = GetTagTable($table)->{$tag};
|
|---|
| 603 | $tagInfo = $$tagInfo[0] if ref $tagInfo eq 'ARRAY';
|
|---|
| 604 | $name = $tagInfo ? $$tagInfo{Name} : '<unknown>';
|
|---|
| 605 | }
|
|---|
| 606 | next if $$et{WrongFormat} and $$et{WrongFormat}{"$grp:$name"};
|
|---|
| 607 | $pre ? ($pre .= ' ') : ($pre = '');
|
|---|
| 608 | $post ? ($post = ' '.$post) : ($post = '');
|
|---|
| 609 | $et->Warn(sprintf('%s%s tag 0x%.4x %s%s', $pre, $grp, $tag, $name, $post), $minor);
|
|---|
| 610 | }
|
|---|
| 611 | }
|
|---|
| 612 | }
|
|---|
| 613 | # validate file extension
|
|---|
| 614 | if ($$et{FILENAME} ne '') {
|
|---|
| 615 | my $fileExt = ($$et{FILENAME} =~ /^.*\.([^.]+)$/s) ? uc($1) : '';
|
|---|
| 616 | my $extFileType = Image::ExifTool::GetFileType($fileExt);
|
|---|
| 617 | if ($extFileType and $extFileType ne $fileType) {
|
|---|
| 618 | my $normExt = $$et{VALUE}{FileTypeExtension};
|
|---|
| 619 | if ($normExt and $normExt ne $fileExt) {
|
|---|
| 620 | my $lkup = $Image::ExifTool::fileTypeLookup{$fileExt};
|
|---|
| 621 | if (ref $lkup or $lkup ne $normExt) {
|
|---|
| 622 | $et->Warn("File has wrong extension (should be $normExt, not $fileExt)");
|
|---|
| 623 | }
|
|---|
| 624 | }
|
|---|
| 625 | }
|
|---|
| 626 | }
|
|---|
| 627 | # issue warning if FastScan option used
|
|---|
| 628 | $et->Warn('Validation incomplete because FastScan option used') if $et->Options('FastScan');
|
|---|
| 629 |
|
|---|
| 630 | # generate Validate tag if necessary
|
|---|
| 631 | if ($mkTag) {
|
|---|
| 632 | my (@num, $key);
|
|---|
| 633 | push @num, $$et{VALUE}{Error} ? ($$et{DUPL_TAG}{Error} || 0) + 1 : 0,
|
|---|
| 634 | $$et{VALUE}{Warning} ? ($$et{DUPL_TAG}{Warning} || 0) + 1 : 0, 0;
|
|---|
| 635 | for ($key = 'Warning'; ; ) {
|
|---|
| 636 | ++$num[2] if $$et{VALUE}{$key} and $$et{VALUE}{$key} =~ /^\[minor\]/i;
|
|---|
| 637 | $key = $et->NextTagKey($key) or last;
|
|---|
| 638 | }
|
|---|
| 639 | $et->FoundTag(Validate => "@num");
|
|---|
| 640 | }
|
|---|
| 641 | }
|
|---|
| 642 |
|
|---|
| 643 | 1; # end
|
|---|
| 644 |
|
|---|
| 645 | __END__
|
|---|
| 646 |
|
|---|
| 647 | =head1 NAME
|
|---|
| 648 |
|
|---|
| 649 | Image::ExifTool::Validate - Additional metadata validation
|
|---|
| 650 |
|
|---|
| 651 | =head1 SYNOPSIS
|
|---|
| 652 |
|
|---|
| 653 | This module is used by Image::ExifTool
|
|---|
| 654 |
|
|---|
| 655 | =head1 DESCRIPTION
|
|---|
| 656 |
|
|---|
| 657 | This module contains additional routines and definitions used when the
|
|---|
| 658 | ExifTool Validate option is enabled.
|
|---|
| 659 |
|
|---|
| 660 | =head1 AUTHOR
|
|---|
| 661 |
|
|---|
| 662 | Copyright 2003-2021, Phil Harvey (philharvey66 at gmail.com)
|
|---|
| 663 |
|
|---|
| 664 | This library is free software; you can redistribute it and/or modify it
|
|---|
| 665 | under the same terms as Perl itself.
|
|---|
| 666 |
|
|---|
| 667 | =head1 SEE ALSO
|
|---|
| 668 |
|
|---|
| 669 | L<Image::ExifTool(3pm)|Image::ExifTool>,
|
|---|
| 670 | L<Image::ExifTool::TagNames/Extra Tags>
|
|---|
| 671 |
|
|---|
| 672 | =cut
|
|---|
