/usr/share/perl5/Archive/Cpio/ODC.pm is in libarchive-cpio-perl 0.10-1.
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 | package Archive::Cpio::ODC;
use Archive::Cpio::Common;
my $TRAILER = 'TRAILER!!!';
my $BLOCK_SIZE = 512;
my @HEADER = (
magic => 6,
dev => 6,
inode => 6,
mode => 6,
uid => 6,
gid => 6,
nlink => 6,
rdev => 6,
mtime => 11,
namesize => 6,
datasize => 11,
);
sub new {
my ($class, $magic) = @_;
bless { magic => oct($magic) }, $class;
}
sub read_one {
my ($o, $FHwp) = @_;
my $entry = read_one_header($o, $FHwp);
$entry->{name} = $FHwp->read($entry->{namesize});
$entry->{name} =~ s/\0$//;
$entry->{name} ne $TRAILER or return;
$entry->{data} = $FHwp->read($entry->{datasize});
cleanup_entry($entry);
$entry;
}
sub read_one_header {
my ($o, $FHwp) = @_;
my %h;
my @header = @HEADER;
while (@header) {
my $field = shift @header;
my $size = shift @header;
$h{$field} = $FHwp->read($size);
$h{$field} =~ /^[0-9]*$/si or die "bad header value $h{$field}\n";
$h{$field} = oct $h{$field};
}
$h{magic} == $o->{magic} or die "bad magic ($h{magic} vs $o->{MAGIC})\n";
\%h;
}
sub write_one {
my ($o, $F, $entry) = @_;
$entry->{magic} = $o->{magic};
$entry->{namesize} = length($entry->{name}) + 1;
$entry->{datasize} = length($entry->{data});
write_or_die($F, pack_header($entry) .
$entry->{name} . "\0" . $entry->{data});
cleanup_entry($entry);
}
sub write_trailer {
my ($o, $F) = @_;
write_one($o, $F, { name => $TRAILER, data => '', nlink => 1 });
}
sub cleanup_entry {
my ($entry) = @_;
foreach ('datasize', 'namesize', 'magic') {
delete $entry->{$_};
}
}
sub pack_header {
my ($h) = @_;
my $packed = '';
my @header = @HEADER;
while (@header) {
my $field = shift @header;
my $size = shift @header;
$packed .= sprintf("%0${size}lo", $h->{$field} || 0);
}
$packed;
}
1;
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