/usr/bin/jetring-checksum is in jetring 0.21.
This file is owned by root:root, with mode 0o755.
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 | #!/usr/bin/perl
use warnings;
use strict;
use Getopt::Long;
sub usage {
die "usage: jetring-checksum [-ug] dir\n";
}
my $upgrade=0;
GetOptions(
"-u", \$upgrade,
) || usage;
usage() unless @ARGV;
my $dir=shift;
chdir($dir) || die "chdir $dir: $!";
open (INDEX, "<", "index") || die "$dir/index: $!";
if ($upgrade) {
open (OUT, ">", "index.new") || die "$dir/index.new: $!";
}
while (<INDEX>) {
chomp;
if (/^([a-zA-Z0-9]+)+\s+(.*)$/) {
runcheck($_, "sha1sum", "-c", "-w");
if ($upgrade) {
print OUT genchecksum($2);
}
}
elsif (/^(\w+)-(.*\s+.*)/) {
my $type=$1;
my $rest=$2;
if ($type=~/^sha(1|256|224|384|512)$/) {
runcheck($rest, $type."sum", "-c", "-w")
}
else {
die "unsupported checksum type \ยจ$type\" in $dir/index\n";
}
if ($upgrade) {
print OUT $_."\n";
}
}
else {
die "invalid line in $dir/index: $_\n";
}
}
close INDEX;
if ($upgrade) {
close OUT;
rename("index.new", "index") || die "rename: $!";
}
sub runcheck {
my $line=shift;
my $command=shift;
close STDOUT;
open(STDOUT, ">/dev/null");
open (PROG, "|-", $command, @_) || die "error running $command: $!";
print PROG $line."\n" || die "$command did not read line";
close PROG || die "$dir/index contains bad checksum!\n";
}
sub genchecksum {
my $file=shift;
my $checksum=`sha256sum '$file'`;
chomp $checksum;
return "sha256-$checksum\n";
}
|