##########################################################################
# $Id: zz-disk_space,v 1.24 2008/12/08 15:16:06 mike Exp $
##########################################################################

#######################################################
## Copyright (c) 2008 Kirk Bauer
## Covered under the included MIT/X-Consortium License:
##    http://www.opensource.org/licenses/mit-license.php
## All modifications and contributions by other persons to
## this script are assumed to have been donated to the
## Logwatch project and thus assume the above copyright
## and licensing terms.  If you want to make contributions
## under your own copyright or a different license this
## must be explicitly stated in the contribution an the
## Logwatch project reserves the right to not accept such
## contributions.  If you have made significant
## contributions to this script and want to claim
## copyright please contact logwatch-devel@lists.sourceforge.net.
#########################################################

$| = 1;

use POSIX qw(uname);

my (%Config);

my $Debug = $ENV{'LOGWATCH_DEBUG'} || 0;
my $Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'} || 0;
my $logwatch_hostname = $ENV{'LOGWATCH_ONLY_HOSTNAME'};

my $show_home_dir_sizes = $ENV{'show_home_dir_sizes'} || 0;
my $home_dir = $ENV{'home_dir'} || 0;
my $show_mail_dir_sizes = $ENV{'show_mail_dir_sizes'} || 0;
my $mail_dir = $ENV{'mail_dir'} || 0;
my $show_disk_usage = $ENV{'show_disk_usage'} || 0;
my $diskfull_threshhold = $ENV{'diskfull_threshold'} || 90;

my $df_options;
my $disk_cmd;

my ($OSname, $hostname, $release, $version, $machine) = POSIX::uname();
$hostname =~ s/\..*//;
exit (0) if ($ENV{'LOGWATCH_ONLY_HOSTNAME'} and ($logwatch_hostname ne $hostname));

if ( $Debug >= 5 ) {
    print STDERR "\n\nDEBUG: Inside zz-disk-space Filter \n\n";
    $DebugCounter = 1;
}

sub DirUsage {
    my $Dir = $_[0];
	if ($OSname eq "Linux") {
		system("du -s --block-size=1048576 -h $Dir | sort -n -r -k 1");
	} elsif ($OSname eq "Darwin") {
		system("du -s --block-size=1048576 -h $Dir | sort -n -r -k 1");
	} elsif ($OSname eq "SunOS") {
		if ( ($release eq "5.10") || ($release eq "5.9") || ($release eq "5.11") ) {
			system("/usr/xpg4/bin/du -s -h $Dir | sort -n -r -k 1");
		} else {
			system("du -s $Dir | sort -n -r -k 1");
  		}
	} elsif ($OSname eq "HP-UX") {
    	system("du -s -k $Dir | sort -n -r -k 1");
	} elsif ($OSname eq "AIX") {
    	system("du -s -k $Dir | sort -n -r -k 1");
	} else {
    	system("du -s -h $Dir | sort -n -r -k 1");
	}

}


sub DirectorySizes
{
      my $Dir = $_[0];
      DirUsage($Dir.'/*');
}

sub HomeDirectorySizes
{
      my $HomeDir = $_[0];
      print "\n\n------------- Home Directory Sizes ---------------\n\n";
      print "Size    Location\n";
      print "(MB)\n";
      DirectorySizes($HomeDir);
      print "\n\n------------- Home Directory Sizes ---------------\n\n";
}


sub MailDirectorySizes
{
      my $MailDir = $_[0];
      print "\n\n------------- Mail Directory Sizes ---------------\n\n";
      print "Size    Location\n";
      print "(MB)\n";
      DirectorySizes($MailDir);
      print "\n\n------------- Mail Directory Sizes ---------------\n\n";
}


sub DiskUsage ()
{
    my $Dir = $_[0];
    print "\n\n------------- Directory Sizes ---------------\n\n";
    print "Size    Location\n";
    print "(GB)\n";

	if ($OSname eq "Linux") {
   		DirUsage("/var/log");
   		DirUsage("/usr");
	} elsif ($OSname eq "Darwin") {
   		DirUsage("/var/log");
   		DirUsage("/usr");
	} elsif ($OSname eq "SunOS") {
   		DirUsage("/var/log");
   		DirUsage("/usr");
   		DirUsage("/opt");
	} elsif ($OSname eq "HP-UX") {
   		DirUsage("/var/adm");
   		DirUsage("/usr");
   		DirUsage("/opt");
	} else {
   		DirUsage("/var/log");
   		DirUsage("/usr");
   		DirUsage("/opt");
	}

	print "\n\n------------- Directory Sizes ---------------\n\n";

}

sub DiskSpace ()
{
   if ($OSname eq "Linux") {
      $df_options = "-h -l -x tmpfs -x udf -x iso9660";
	} elsif ($OSname eq "Darwin") {
      $df_options = "-h -l";
	} elsif ($OSname eq "SunOS") {
		if ( ($release eq "5.10") || ($release eq "5.9") || ($release eq "5.11") ) {
         $df_options = "-h -l";
  		} else {
         $df_options = "-l";
  		}
   } elsif ($OSname eq "HP-UX") {
      $df_options = "-l";
   } elsif ($OSname eq "AIX") {
      $df_options = "-P";
   } else {
      $df_options = "-l";
	}

   if ( $ENV{'df_options'} ) {
      $df_options = $ENV{'df_options'};
   };

   if ($OSname eq "Linux") {
      $disk_cmd = "df $df_options";
	} elsif ($OSname eq "Darwin") {
      $disk_cmd = "df $df_options";
	} elsif ($OSname eq "SunOS") {
      $disk_cmd = "/usr/xpg4/bin/df $df_options";
	} elsif ($OSname eq "HP-UX") {
      $disk_cmd = "bdf $df_options";
	} else {
      $disk_cmd = "df $df_options";
	}

   if ( $ENV{'disk_cmd'} ) {
      $disk_cmd = $ENV{'disk_cmd'};
   };

   system($disk_cmd);

   print "\n";
}

sub DiskFull
{
   my $o = `$disk_cmd`;
   my @rows = split('\n', $o);
   foreach my $row (@rows)
   {
     my @fields = split(' ', $row);
     my $use = $fields[4];
     $use =~ s/%//;
     if (($use > $diskfull_threshhold) && ($fields[0] !~ /\/dev\/scd/ ) && ($fields[0] !~ /\/dev\/sr/ )
         && ($fields[0] !~ /\/dev\/loop./))
     {
       print "$fields[0] => $fields[4] Used. Warning. Disk Filling up.\n";
     }
   }
}

#####################
#Main

#Only show disk space "df" by default -mgt
DiskSpace() if (($ENV{PRINTING} eq 'y') or $Detail);

if ( $show_disk_usage == 1 ) { DiskUsage(); }; #Turn on in zz-disk_space.conf

if (($Detail > 10) || ($show_home_dir_sizes == 1)) { #set in zz-disk_space.conf -mgt
	HomeDirectorySizes($home_dir);
}

if (($Detail > 10) || ($show_mail_dir_sizes == 1)) { #set in zz-disk_space.conf -mgt
    MailDirectorySizes($mail_dir);
}

if ($diskfull_threshhold > 0)
{
  DiskFull();
}

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