#
# (c) Jan Gehring <jan.gehring@gmail.com>
#
# vim: set ts=2 sw=2 tw=0:
# vim: set expandtab:
=head1 NAME
Rex::Commands::MD5 - Calculate MD5 sum of files
=head1 DESCRIPTION
With this module you calculate the md5 sum of a file.
This is just a helper function and will not be reported.
=head1 SYNOPSIS
my $md5 = md5($file);
=head1 EXPORTED FUNCTIONS
=over 4
=cut
package Rex::Commands::MD5;
use strict;
use warnings;
our $VERSION = '1.2.1'; # VERSION
use Rex::Logger;
require Rex::Commands;
use Rex::Interface::Exec;
use Rex::Interface::File;
use Rex::Interface::Fs;
use Rex::Helper::Path;
use Rex::Helper::Run;
require Rex::Exporter;
use base qw(Rex::Exporter);
use vars qw(@EXPORT);
@EXPORT = qw(md5);
=item md5($file)
This function will return the md5 sum (hexadecimal) for the given file.
task "md5", "server01", sub {
my $md5 = md5("/etc/passwd");
};
=cut
sub md5 {
my ($file) = @_;
my $fs = Rex::Interface::Fs->create;
if ( $fs->is_file($file) ) {
Rex::Logger::debug("Calculating Checksum (md5) of $file");
my $exec = Rex::Interface::Exec->create;
my $md5;
my $uname_cmd = $exec->can_run( ["uname"] );
my ( $os, $md5_cmd );
if ($uname_cmd) {
$os = $exec->exec("$uname_cmd -s");
}
else {
$os = "Unknown";
}
if ( $os =~ /bsd|darwin/i ) {
$md5 = $exec->exec("/sbin/md5 -q '$file'");
}
else {
$md5_cmd = $exec->can_run( ["md5sum"] );
if ($md5_cmd) {
($md5) = split( /\s/, $exec->exec("$md5_cmd '$file'") );
}
else {
my $script = q|
use Digest::MD5;
my $ctx = Digest::MD5->new;
open my $fh, "<", $ARGV[0];
binmode $fh;
while(my $line = <$fh>) {
$ctx->add($line);
}
print $ctx->hexdigest . "\n";
|;
my $rnd_file = get_tmp_file;
my $fh = Rex::Interface::File->create;
$fh->open( ">", $rnd_file );
$fh->write($script);
$fh->close;
if ( Rex::is_local() && $^O =~ m/^MSWin/ ) {
$md5 = $exec->exec("perl $rnd_file \"$file\"");
}
else {
$md5 = i_run "perl $rnd_file '$file'";
}
unless ( $? == 0 ) {
Rex::Logger::info("Unable to get md5 sum of $file");
die("Unable to get md5 sum of $file");
}
Rex::Interface::Fs->create->unlink($rnd_file);
}
}
Rex::Logger::debug("MD5SUM ($file): $md5");
$md5 =~ s/[\r\n]//gms;
return $md5;
}
else {
Rex::Logger::debug("File $file not found.");
die("File $file not found");
}
}
=back
=cut
1;