#!/usr/bin/perl
# @@@ START COPYRIGHT @@@
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
# @@@ END COPYRIGHT @@@

use strict;
use warnings;

use Getopt::Long;

my $help = 0;
my $res;
my $verbose = 0;

$res = GetOptions(
        'h' => \$help,
        'v' => \$verbose,
	);
exit(1) if (!$res);
if ($help) {
	printf "usage: sqid [-h] [-v]\n";
	exit(0);
}

my $sq_pdsh = defined $ENV{'SQ_PDSH'} ? $ENV{'SQ_PDSH'} : '';
my $traf_home = defined $ENV{'TRAF_HOME'} ? $ENV{'TRAF_HOME'} : '';
my $java_home = defined $ENV{'JAVA_HOME'} ? $ENV{'JAVA_HOME'} : '';
my $host;
gethost();

if ($verbose) {
	printf "v: cmd:whoami\n";
}
my $w = `whoami`;
$w =~ s/\s+$//;
my $lr = `uname -r`;
$lr =~ s/\s+$//;
my $rhrel = `cat /etc/redhat-release`;
my $rr = "?.?";
if ($rhrel =~ /^.*release ([0-9][0-9]*)\.([0-9][0-9]*)/) {
	$rr=$1 . "." . $2
}

print "TRAF_HOME=$traf_home\n";
print "who\@host=$w\@$host\n";
print "JAVA_HOME=$java_home\n";
print "linux=$lr\n";
print "redhat=$rr\n";
# can't do much if this env variables is not setup
if (!defined $ENV{'TRAF_HOME'}) {
	die "TRAF_HOME is not set!";
}

my $sq_mbtype = defined $ENV{'SQ_MBTYPE'} ? $ENV{'SQ_MBTYPE'} : '?';
my $dir = "$traf_home/export/lib" . $sq_mbtype;
chdir($dir) or die "can't chdir to $dir $!";
my $file = "$dir'/libsbms.so'";
version($file);

#
# gethost
#   default to hostname
#   search /etc/pdsh/machines | /opt/hptc/pdsh/nodes for non 'n[0-9][0-9]*'
#
sub gethost {
	if ($verbose) {
		printf "v: cmd:hostname\n";
	}
	$host = `hostname`;
	$host =~ s/\s+$//;
	if (-x ($sq_pdsh)) {
		# find head node
		if ($verbose) {
			printf "v: cmd:cat /etc/pdsh/machines\n";
		}
		my $mach;
		if (-r "/etc/pdsh/machines") {
			$mach = `cat /etc/pdsh/machines`;
                } elsif (-r "/etc/machines") {
                        $mach = `cat /etc/machines`;
                } else {
			$mach = `cat /opt/hptc/pdsh/nodes`;
		}
		my @nstrs = split(/\n/, $mach);
		my $nstr;
		foreach $nstr (@nstrs) {
			my $hno = $nstr;
			$hno =~ s/\s+$//;
			if ($verbose) {
				print "v: /etc/pdsh/machines, rec=$hno\n";
			}
			if ($hno !~ /^n[0-9][0-9]*/) {
				$host = $hno;
				last;
			}
		}
	}
	if ($verbose) {
		print "v: *host=$host\n";
	}
	$host =~ s/\s+$//;
}

sub version {
	my ($elf) = @_;

	if ($verbose) {
		printf "v: cmd:nm $elf\n";
	}
	my $nm = `nm $elf | grep " VERS_"`;
	my @strs = split(/\n/, $nm);
	my $str;
	foreach $str (@strs) {
		my $ver = $str;
		$ver =~ s/^.*?VERS_//;
		$ver =~ s/_sl_/\//g;
		$ver =~ s/_dt_/\./g;
		$ver =~ s/_dh_/-/g;
		if ($ver =~ /([a-zA-Z0-9_]*)_CV(\d*)_(\d*)_(\d*)_PV(\d*)_(\d*)_(\d*)_BV(\w*)_BR([\w\-\.\/]*)_DT(\w*)_SV(.*)/) {
			print "Release $5.$6.$7 (Build $8 [$11], branch $9, date $10)\n";
		}
	}
}