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package urpm::md5sum; # $Id$
use urpm;
use urpm::util;
use urpm::msg;
sub parse {
my ($md5sum_file) = @_;
my %h = map {
my ($md5sum, $file) = m|^([0-9-a-f]+)\s+(?:\./)?(\S+)$|i or return;
$file => $md5sum;
} cat_($md5sum_file) or return;
\%h;
}
sub check_file {
my ($md5sum_file) = @_;
file_size($md5sum_file) > 32 && parse($md5sum_file);
}
sub from_MD5SUM__or_warn {
my ($urpm, $md5sum_file, $basename) = @_;
$urpm->{debug}(N("examining %s file", $md5sum_file)) if $urpm->{debug};
my $md5sums = parse($md5sum_file) or $urpm->{log}(N("invalid MD5SUM file")), return;
$md5sums->{$basename} or $urpm->{log}(N("warning: md5sum for %s unavailable in MD5SUM file", $basename));
$md5sums->{$basename};
}
sub compute {
my ($file) = @_;
eval { require Digest::MD5 };
if ($@) {
#- Use an external command to avoid depending on perl
return (split ' ', `/usr/bin/md5sum '$file'`)[0];
} else {
my $ctx = Digest::MD5->new;
open my $fh, $file or return '';
$ctx->addfile($fh);
close $fh;
return $ctx->hexdigest;
}
}
1;
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