This file is indexed.

/usr/share/perl5/Image/ExifTool/LNK.pm is in libimage-exiftool-perl 10.10-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
#------------------------------------------------------------------------------
# File:         LNK.pm
#
# Description:  Read meta information from MS Shell Link files
#
# Revisions:    2009/09/19 - P. Harvey Created
#
# References:   1) http://msdn.microsoft.com/en-us/library/dd871305(PROT.10).aspx
#               2) http://www.i2s-lab.com/Papers/The_Windows_Shortcut_File_Format.pdf
#------------------------------------------------------------------------------

package Image::ExifTool::LNK;

use strict;
use vars qw($VERSION);
use Image::ExifTool qw(:DataAccess :Utils);

$VERSION = '1.07';

sub ProcessItemID($$$);
sub ProcessLinkInfo($$$);

# Information extracted from LNK (Windows Shortcut) files
%Image::ExifTool::LNK::Main = (
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    GROUPS => { 2 => 'Other' },
    VARS => { HEX_ID => 1 },    # print hex ID's in documentation
    NOTES => 'Information extracted from MS Shell Link (Windows shortcut) files.',
    # maybe the Flags aren't very useful to the user (since they are
    # mainly structural), but extract them anyway for completeness
    0x14 => {
        Name => 'Flags',
        Format => 'int32u',
        PrintConv => { BITMASK => {
            0 => 'IDList',
            1 => 'LinkInfo',
            2 => 'Description',
            3 => 'RelativePath',
            4 => 'WorkingDir',
            5 => 'CommandArgs',
            6 => 'IconFile',
            7 => 'Unicode',
            8 => 'NoLinkInfo',
            9 => 'ExpString',
            10 => 'SeparateProc',
            12 => 'DarwinID',
            13 => 'RunAsUser',
            14 => 'ExpIcon',
            15 => 'NoPidAlias',
            17 => 'RunWithShim',
            18 => 'NoLinkTrack',
            19 => 'TargetMetadata',
            20 => 'NoLinkPathTracking',
            21 => 'NoKnownFolderTracking',
            22 => 'NoKnownFolderAlias',
            23 => 'LinkToLink',
            24 => 'UnaliasOnSave',
            25 => 'PreferEnvPath',
            26 => 'KeepLocalIDList',
        }},
    },
    0x18 => {
        Name => 'FileAttributes',
        Format => 'int32u',
        PrintConv => { BITMASK => {
            0 => 'Read-only',
            1 => 'Hidden',
            2 => 'System',
            3 => 'Volume', #(not used)
            4 => 'Directory',
            5 => 'Archive',
            6 => 'Encrypted?', #(ref 2, not used in XP)
            7 => 'Normal',
            8 => 'Temporary',
            9 => 'Sparse',
            10 => 'Reparse point',
            11 => 'Compressed',
            12 => 'Offline',
            13 => 'Not indexed',
            14 => 'Encrypted',
        }},
    },
    0x1c => {
        Name => 'CreateDate',
        Format => 'int64u',
        Groups => { 2 => 'Time' },
        # convert time from 100-ns intervals since Jan 1, 1601
        RawConv => '$val ? $val : undef',
        ValueConv => '$val=$val/1e7-11644473600; ConvertUnixTime($val,1)',
        PrintConv => '$self->ConvertDateTime($val)',
    },
    0x24 => {
        Name => 'AccessDate',
        Format => 'int64u',
        Groups => { 2 => 'Time' },
        RawConv => '$val ? $val : undef',
        ValueConv => '$val=$val/1e7-11644473600; ConvertUnixTime($val,1)',
        PrintConv => '$self->ConvertDateTime($val)',
    },
    0x2c => {
        Name => 'ModifyDate',
        Format => 'int64u',
        Groups => { 2 => 'Time' },
        RawConv => '$val ? $val : undef',
        ValueConv => '$val=$val/1e7-11644473600; ConvertUnixTime($val,1)',
        PrintConv => '$self->ConvertDateTime($val)',
    },
    0x34 => {
        Name => 'TargetFileSize',
        Format => 'int32u',
    },
    0x38 => {
        Name => 'IconIndex',
        Format => 'int32u',
        PrintConv => '$val ? $val : "(none)"',
    },
    0x3c => {
        Name => 'RunWindow',
        Format => 'int32u',
        PrintConv => {
            0 => 'Hide',
            1 => 'Normal',
            2 => 'Show Minimized',
            3 => 'Show Maximized',
            4 => 'Show No Activate',
            5 => 'Show',
            6 => 'Minimized',
            7 => 'Show Minimized No Activate',
            8 => 'Show NA',
            9 => 'Restore',
            10 => 'Show Default',
        },
    },
    0x40 => {
        Name => 'HotKey',
        Format => 'int32u',
        PrintHex => 1,
        PrintConv => {
            OTHER => sub {
                my $val = shift;
                my $ch = $val & 0xff;
                if (chr $ch =~ /^[A-Z0-9]$/) {
                    $ch = chr $ch;
                } elsif ($ch >= 0x70 and $ch <= 0x87) {
                    $ch = 'F' . ($ch - 0x6f);
                } elsif ($ch == 0x90) {
                    $ch = 'Num Lock';
                } elsif ($ch == 0x91) {
                    $ch = 'Scroll Lock';
                } else {
                    $ch = sprintf('Unknown (0x%x)', $ch);
                }
                $ch = "Alt-$ch" if $val & 0x400;
                $ch = "Control-$ch" if $val & 0x200;
                $ch = "Shift-$ch" if $val & 0x100;
                return $ch;
            },
            0x00 => '(none)',
            # these entries really only for documentation
            0x90 => 'Num Lock',
            0x91 => 'Scroll Lock',
           "0x30'-'0x39" => "0-9",
           "0x41'-'0x5a" => "A-Z",
           "0x70'-'0x87" => "F1-F24",
           0x100 => 'Shift',
           0x200 => 'Control',
           0x400 => 'Alt',
        },
    },
    # note: tags 0x10xx are synthesized tag ID's
    0x10000 => {
        Name => 'ItemID',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::ItemID' },
    },
    0x20000 => {
        Name => 'LinkInfo',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::LinkInfo' },
    },
    0x30004 => 'Description',
    0x30008 => 'RelativePath',
    0x30010 => 'WorkingDirectory',
    0x30020 => 'CommandLineArguments',
    0x30040 => 'IconFileName',
    # note: tags 0xa000000x are actually ID's (not indices)
    0xa0000000 => {
        Name => 'UnknownData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa0000001 => {
        Name => 'EnvVarData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa0000002 => {
        Name => 'ConsoleData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::ConsoleData' },
    },
    0xa0000003 => {
        Name => 'TrackerData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::TrackerData' },
    },
    0xa0000004 => {
        Name => 'ConsoleFEData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::ConsoleFEData' },
    },
    0xa0000005 => {
        Name => 'SpecialFolderData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa0000006 => {
        Name => 'DarwinData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa0000007 => {
        Name => 'IconEnvData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa0000008 => {
        Name => 'ShimData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa0000009 => {
        Name => 'PropertyStoreData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa000000b => {
        Name => 'KnownFolderData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
    0xa000000c => {
        Name => 'VistaIDListData',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
    },
);

%Image::ExifTool::LNK::ItemID = (
    GROUPS => { 2 => 'Other' },
    PROCESS_PROC => \&ProcessItemID,
    # (can't find any documentation on these items)
    0x0032 => {
        Name => 'Item0032',
        SubDirectory => { TagTable => 'Image::ExifTool::LNK::Item0032' },
    },
);

%Image::ExifTool::LNK::Item0032 = (
    GROUPS => { 2 => 'Other' },
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    0x0e => {
        Name => 'TargetFileDOSName',
        Format => 'var_string',
    },
    #not at a fixed offset -- offset is given by last 2 bytes of the item + 0x14
    #0x22 => {
    #    Name => 'TargetFileName',
    #    Format => 'var_ustring',
    #},
);

%Image::ExifTool::LNK::LinkInfo = (
    GROUPS => { 2 => 'Other' },
    PROCESS_PROC => \&ProcessLinkInfo,
    FORMAT => 'int32u',
    VARS => { NO_ID => 1 },
    VolumeID => { },
    DriveType => {
        PrintConv => {
            0 => 'Unknown',
            1 => 'Invalid Root Path',
            2 => 'Removable Media',
            3 => 'Fixed Disk',
            4 => 'Remote Drive',
            5 => 'CD-ROM',
            6 => 'Ram Disk',
        },
    },
    DriveSerialNumber => { },
    VolumeLabel => { },
    LocalBasePath => { },
    CommonNetworkRelLink => { },
    CommonPathSuffix => { },
    NetName => { },
    DeviceName => { },
    NetProviderType => {
        PrintHex => 1,
        PrintConv => {
            0x1a0000 => 'AVID',
            0x1b0000 => 'DOCUSPACE',
            0x1c0000 => 'MANGOSOFT',
            0x1d0000 => 'SERNET',
            0x1e0000 => 'RIVERFRONT1',
            0x1f0000 => 'RIVERFRONT2',
            0x200000 => 'DECORB',
            0x210000 => 'PROTSTOR',
            0x220000 => 'FJ_REDIR',
            0x230000 => 'DISTINCT',
            0x240000 => 'TWINS',
            0x250000 => 'RDR2SAMPLE',
            0x260000 => 'CSC',
            0x270000 => '3IN1',
            0x290000 => 'EXTENDNET',
            0x2a0000 => 'STAC',
            0x2b0000 => 'FOXBAT',
            0x2c0000 => 'YAHOO',
            0x2d0000 => 'EXIFS',
            0x2e0000 => 'DAV',
            0x2f0000 => 'KNOWARE',
            0x300000 => 'OBJECT_DIRE',
            0x310000 => 'MASFAX',
            0x320000 => 'HOB_NFS',
            0x330000 => 'SHIVA',
            0x340000 => 'IBMAL',
            0x350000 => 'LOCK',
            0x360000 => 'TERMSRV',
            0x370000 => 'SRT',
            0x380000 => 'QUINCY',
            0x390000 => 'OPENAFS',
            0x3a0000 => 'AVID1',
            0x3b0000 => 'DFS',
        },
    },
);

%Image::ExifTool::LNK::UnknownData = (
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    GROUPS => { 2 => 'Other' },
);

%Image::ExifTool::LNK::ConsoleData = (
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    GROUPS => { 2 => 'Other' },
    0x08 => {
        Name => 'FillAttributes',
        Format => 'int16u',
        PrintConv => 'sprintf("0x%.2x", $val)',
    },
    0x0a => {
        Name => 'PopupFillAttributes',
        Format => 'int16u',
        PrintConv => 'sprintf("0x%.2x", $val)',
    },
    0x0c => {
        Name => 'ScreenBufferSize',
        Format => 'int16u[2]',
        PrintConv => '$val=~s/ / x /; $val',
    },
    0x10 => {
        Name => 'WindowSize',
        Format => 'int16u[2]',
        PrintConv => '$val=~s/ / x /; $val',
    },
    0x14 => {
        Name => 'WindowOrigin',
        Format => 'int16u[2]',
        PrintConv => '$val=~s/ / x /; $val',
    },
    0x20 => {
        Name => 'FontSize',
        Format => 'int16u[2]',
        PrintConv => '$val=~s/ / x /; $val',
    },
    0x24 => {
        Name => 'FontFamily',
        Format => 'int32u',
        PrintHex => 1,
        PrintConv => {
            0 => "Don't Care",
            0x10 => 'Roman',
            0x20 => 'Swiss',
            0x30 => 'Modern',
            0x40 => 'Script',
            0x50 => 'Decorative',
        },
    },
    0x28 => {
        Name => 'FontWeight',
        Format => 'int32u',
    },
    0x2c => {
        Name => 'FontName',
        Format => 'undef[64]',
        RawConv => q{
            $val = $self->Decode($val, 'UCS2');
            $val =~ s/\0.*//s;
            return length($val) ? $val : undef;
        },
    },
    0x6c => {
        Name => 'CursorSize',
        Format => 'int32u',
    },
    0x70 => {
        Name => 'FullScreen',
        Format => 'int32u',
        PrintConv => '$val ? "Yes" : "No"',
    },
    0x74 => { #PH (MISSING FROM MS DOCUMENTATION! -- screws up subsequent offsets)
        Name => 'QuickEdit',
        Format => 'int32u',
        PrintConv => '$val ? "Yes" : "No"',
    },
    0x78 => {
        Name => 'InsertMode',
        Format => 'int32u',
        PrintConv => '$val ? "Yes" : "No"',
    },
    0x7c => {
        Name => 'WindowOriginAuto',
        Format => 'int32u',
        PrintConv => '$val ? "Yes" : "No"',
    },
    0x80 => {
        Name => 'HistoryBufferSize',
        Format => 'int32u',
    },
    0x84 => {
        Name => 'NumHistoryBuffers',
        Format => 'int32u',
    },
    0x88 => {
        Name => 'RemoveHistoryDuplicates',
        Format => 'int32u',
        PrintConv => '$val ? "Yes" : "No"',
    },
);

%Image::ExifTool::LNK::TrackerData = (
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    GROUPS => { 2 => 'Other' },
    0x10 => {
        Name => 'MachineID',
        Format => 'var_string',
    },
);

%Image::ExifTool::LNK::ConsoleFEData = (
    PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
    GROUPS => { 2 => 'Other' },
    0x08 => {
        Name => 'CodePage',
        Format => 'int32u',
    },
);

#------------------------------------------------------------------------------
# Extract null-terminated ASCII or Unicode string from buffer
# Inputs: 0) buffer ref, 1) start position, 2) flag for unicode string
# Return: string or undef if start position is outside bounds
sub GetString($$;$)
{
    my ($dataPt, $pos, $unicode) = @_;
    return undef if $pos >= length($$dataPt);
    pos($$dataPt) = $pos;
    return $1 if ($unicode ? $$dataPt=~/\G((?:..)*?)\0\0/sg : $$dataPt=~/\G(.*?)\0/sg);
    return substr($$dataPt, $pos);
}

#------------------------------------------------------------------------------
# Process item ID data
# Inputs: 0) ExifTool object reference, 1) dirInfo reference, 2) tag table ref
# Returns: 1 on success
sub ProcessItemID($$$)
{
    my ($et, $dirInfo, $tagTablePtr) = @_;
    my $dataPt = $$dirInfo{DataPt};
    my $dataLen = length $$dataPt;
    my $pos = 0;
    my %opts = (
        DataPt  => $dataPt,
        DataPos => $$dirInfo{DataPos},
    );
    $et->VerboseDir('ItemID', undef, $dataLen);
    for (;;) {
        last if $pos + 4 >= $dataLen;
        my $size = Get16u($dataPt, $pos);
        last if $size < 2 or $pos + $size > $dataLen;
        my $tag = Get16u($dataPt, $pos+2); # (just a guess -- may not be a tag at all)
        AddTagToTable($tagTablePtr, $tag, {
            Name => sprintf('Item%.4x', $tag),
            SubDirectory => { TagTable => 'Image::ExifTool::LNK::UnknownData' },
        }) unless $$tagTablePtr{$tag};
        $et->HandleTag($tagTablePtr, $tag, undef, %opts, Start => $pos, Size => $size);
        $pos += $size;
    }
}

#------------------------------------------------------------------------------
# Process link information data
# Inputs: 0) ExifTool object reference, 1) dirInfo reference, 2) tag table ref
# Returns: 1 on success
sub ProcessLinkInfo($$$)
{
    my ($et, $dirInfo, $tagTablePtr) = @_;
    my $dataPt = $$dirInfo{DataPt};
    my $dataLen = length $$dataPt;
    return 0 if $dataLen < 0x20;
    my $hdrLen = Get32u($dataPt, 4);
    my $lif = Get32u($dataPt, 8);   # link info flags
    my %opts = (
        DataPt  => $dataPt,
        DataPos => $$dirInfo{DataPos},
        Size    => 4, # (typical value size)
    );
    my ($off, $unicode, $pos, $val, $size);
    $et->VerboseDir('LinkInfo', undef, $dataLen);
    if ($lif & 0x01) {
        # read Volume ID
        $off = Get32u($dataPt, 0x0c);
        if ($off + 0x20 <= $dataLen) {
            # my $len = Get32u($dataPt, $off);
            $et->HandleTag($tagTablePtr, 'DriveType', undef, %opts, Start=>$off+4);
            $pos = Get32u($dataPt, $off + 0x0c);
            if ($pos == 0x14) {
                # use VolumeLabelOffsetUnicode instead
                $pos = Get32u($dataPt, $off + 0x10);
                $unicode = 1;
            }
            $pos += $off;
            $val = GetString($dataPt, $pos, $unicode);
            if (defined $val) {
                $size = length $val;
                $val = $et->Decode($val, 'UCS2') if $unicode;
                $et->HandleTag($tagTablePtr, 'VolumeLabel', $val, %opts, Start=>$pos, Size=>$size);
            }
        }
        # read local base path
        if ($hdrLen >= 0x24) {
            $pos = Get32u($dataPt, 0x1c);
            $unicode = 1;
        } else {
            $pos = Get32u($dataPt, 0x10);
            undef $unicode;
        }
        $val = GetString($dataPt, $pos, $unicode);
        if (defined $val) {
            $size = length $val;
            $val = $et->Decode($val, 'UCS2') if $unicode;
            $et->HandleTag($tagTablePtr, 'LocalBasePath', $val, %opts, Start=>$pos, Size=>$size);
        }
    }
    if ($lif & 0x02) {
        # read common network relative link
        $off = Get32u($dataPt, 0x14);
        if ($off and $off + 0x14 <= $dataLen) {
            my $siz = Get32u($dataPt, $off);
            $pos = Get32u($dataPt, $off + 0x08);
            if ($pos > 0x14 and $siz >= 0x18) {
                $pos = Get32u($dataPt, $off + 0x14);
                $unicode = 1;
            } else {
                undef $unicode;
            }
            $val = GetString($dataPt, $pos, $unicode);
            if (defined $val) {
                $size = length $val;
                $val = $et->Decode($val, 'UCS2') if $unicode;
                $et->HandleTag($tagTablePtr, 'NetName', $val, %opts, Start=>$pos, Size=>$size);
            }
            my $flg = Get32u($dataPt, $off + 0x04);
            if ($flg & 0x01) {
                $pos = Get32u($dataPt, $off + 0x0c);
                if ($pos > 0x14 and $siz >= 0x1c) {
                    $pos = Get32u($dataPt, $off + 0x18);
                    $unicode = 1;
                } else {
                    undef $unicode;
                }
                $val = GetString($dataPt, $pos, $unicode);
                if (defined $val) {
                    $size = length $val;
                    $val = $et->Decode($val, 'UCS2') if $unicode;
                    $et->HandleTag($tagTablePtr, 'DeviceName', $val, %opts, Start=>$pos, Size=>$size);
                }
            }
            if ($flg & 0x02) {
                $val = Get32u($dataPt, $off + 0x10);
                $et->HandleTag($tagTablePtr, 'NetProviderType', $val, %opts, Start=>$off + 0x10);
            }
        }
    }
    return 1;
}

#------------------------------------------------------------------------------
# Extract information from a MS Shell Link (Windows shortcut) file
# Inputs: 0) ExifTool object reference, 1) dirInfo reference
# Returns: 1 on success, 0 if this wasn't a valid LNK file
sub ProcessLNK($$)
{
    my ($et, $dirInfo) = @_;
    my $raf = $$dirInfo{RAF};
    my ($buff, $buf2, $len, $i);

    # read LNK file header
    $raf->Read($buff, 0x4c) == 0x4c or return 0;
    $buff =~ /^.{4}\x01\x14\x02\0{5}\xc0\0{6}\x46/s or return 0;
    $len = unpack('V', $buff);
    $len >= 0x4c or return 0;
    if ($len > 0x4c) {
        $raf->Read($buf2, $len - 0x4c) == $len - 0x4c or return 0;
        $buff .= $buf2;
    }
    $et->SetFileType();
    SetByteOrder('II');

    my $tagTablePtr = GetTagTable('Image::ExifTool::LNK::Main');
    my %dirInfo = (
        DataPt => \$buff,
        DataPos => 0,
        DataLen => length $buff,
        DirLen => length $buff,
    );
    $et->ProcessDirectory(\%dirInfo, $tagTablePtr);

    my $flags = Get32u(\$buff, 0x14);

    # read link target ID list
    if ($flags & 0x01) {
        $raf->Read($buff, 2) or return 1;
        $len = unpack('v', $buff);
        $raf->Read($buff, $len) == $len or return 1;
        $et->HandleTag($tagTablePtr, 0x10000, undef,
            DataPt  => \$buff,
            DataPos => $raf->Tell() - $len,
            Size    => $len,
        );
    }

    # read link information
    if ($flags & 0x02) {
        $raf->Read($buff, 4) or return 1;
        $len = unpack('V', $buff);
        return 1 if $len < 4;
        $raf->Read($buf2, $len - 4) == $len - 4 or return 1;
        $buff .= $buf2;
        $et->HandleTag($tagTablePtr, 0x20000, undef,
            DataPt  => \$buff,
            DataPos => $raf->Tell() - $len,
            Size    => $len,
        );
    }

    # read string data
    my @strings = qw(Description RelativePath WorkingDirectory
                     CommandLineArguments IconFileName);
    for ($i=0; $i<@strings; ++$i) {
        my $mask = 0x04 << $i;
        next unless $flags & $mask;
        $raf->Read($buff, 2) or return 1;
        $len = unpack('v', $buff);
        $len *= 2 if $flags & 0x80;  # characters are 2 bytes if Unicode flag is set
        $raf->Read($buff, $len) or return 1;
        my $val;
        $val = $et->Decode($buff, 'UCS2') if $flags & 0x80;
        $et->HandleTag($tagTablePtr, 0x30000 | $mask, $val,
            DataPt  => \$buff,
            DataPos => $raf->Tell() - $len,
            Size    => $len,
        );
    }

    # read extra data
    while ($raf->Read($buff, 4) == 4) {
        $len = unpack('V', $buff);
        last if $len < 4;
        $len -= 4;
        $raf->Read($buf2, $len) == $len or last;
        next unless $len > 4;
        $buff .= $buf2;
        my $tag = Get32u(\$buff, 4);
        my $tagInfo = $$tagTablePtr{$tag};
        unless (ref $tagInfo eq 'HASH' and $$tagInfo{SubDirectory}) {
            $tagInfo = $$tagTablePtr{0xa0000000};
        }
        $et->HandleTag($tagTablePtr, $tag, undef,
            DataPt  => \$buff,
            DataPos => $raf->Tell() - $len - 4,
            TagInfo => $tagInfo,
        );
    }
    return 1;
}

1;  # end

__END__

=head1 NAME

Image::ExifTool::LNK - Read MS Shell Link (.LNK) meta information

=head1 SYNOPSIS

This module is used by Image::ExifTool

=head1 DESCRIPTION

This module contains definitions required by Image::ExifTool to extract meta
information MS Shell Link (Windows shortcut) files.

=head1 AUTHOR

Copyright 2003-2016, Phil Harvey (phil at owl.phy.queensu.ca)

This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=head1 REFERENCES

=over 4

=item L<http://msdn.microsoft.com/en-us/library/dd871305(PROT.10).aspx>

=item L<http://www.i2s-lab.com/Papers/The_Windows_Shortcut_File_Format.pdf>

=back

=head1 SEE ALSO

L<Image::ExifTool::TagNames/LNK Tags>,
L<Image::ExifTool(3pm)|Image::ExifTool>

=cut