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#!/usr/bin/env perl
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#!/usr/bin/env perl
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use warnings;
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use warnings;
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use strict;
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use strict;
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# Description: Gets information on Unix based systems
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our $VERSION = '1.1.1';
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use version ; our $VERSION = '1.1.1';
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# Basic Unix module for sysinfo client
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# Basic Unix module for sysinfo client
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# Author: R. W. Rodolico
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# Author: R. W. Rodolico
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# Date:   2016-04-08
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# Date:   2016-04-08
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# gets additional systems information on Linux machine using some standard
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# gets additional systems information on Linux machine using some standard
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# utilities
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# utilities
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#
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# Revision History
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#
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# find our location and use it for searching for libraries
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# find our location and use it for searching for libraries. library.pm must be in the same directory as the calling script
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# or, if run interactively, in the parent of the modules
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BEGIN {
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BEGIN {
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   use FindBin;
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   use FindBin;
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   use File::Spec;
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   use File::Spec;
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   use lib File::Spec->catdir($FindBin::Bin);
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   # prepend the bin directory and its parent
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   eval( 'use library;' ); die "Could not find library.pm in the code directory\n" if $@;
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   use lib File::Spec->catdir($FindBin::Bin), File::Spec->catdir("$FindBin::Bin/..");
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   eval( 'use Data::Dumper;' );
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   eval( 'use library;' );
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}
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# check for valid OS.
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exit 1 unless &checkOS( { 'linux' => undef } );
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# check for required commands, return 2 if they don't exist. Enter an full list of all commands required. If one doesn't exist
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   die sprintf( "Could not find library.pm in %s, INC is %s\n", __FILE__, join( "\n", @INC ) ) if $@;
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# script returns a 2
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foreach my $command ( 'free', 'awk', 'grep', 'tail', 'uname' ) {
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   exit 2 unless &validCommandOnSystem( $command );
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}
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}
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#####
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# The files/directories the script will use
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##### Change these to match your needs
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#####
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# Make this a list of all the modules we are going to use. You can replace undef with the version you need, if you like
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my %directory = (
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my $modulesList = {
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#                  '/proc/cpuinfo' => 0,
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        'Data::Dumper'     => undef,
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   };
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# hash of commands that are needed for the system. key is the name of the command and, in some cases, the value will become
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# the full path (from which or where)
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my $commandsList = {
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                  '/proc/uptime' => 0,
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         'free' => undef,
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#                  '/tmp/rodolico' => 0
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         'awk' => undef,
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         'grep' => undef,
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                );
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         'tail' => undef,
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         'uname' => undef,
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   };
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# list of operating systems this module can be used on.
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my $osList = {
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# check the file/directory exists
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#         'mswin32' => undef,
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foreach my $dir ( keys %directory ) {
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#         'freebsd' => undef,
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   $directory{$dir} =  1 if (-e $dir);
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         'linux'   => undef,
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}
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   };
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# category we will use for all values found
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# the category the return data should go into. See sysinfo for a list
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# see sysinfo for a list of valid categories
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my $CATEGORY = 'system';
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my $CATEGORY = 'system';
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#####
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##### End of required
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#####
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# some variables needed for our system
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my $errorPrepend = 'error: in ' . __FILE__; # this is prepended to any error messages
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my @out; # temporary location for each line of output
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# Try to load the modules we need. If we can not, then make a list of missing modules for error message.
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for my $module ( keys %$modulesList ) {
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   eval ( "use $module;" );
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   push @out, "$errorPrepend Could not load $module" if $@;
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}
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# this is now done via dmidecode module
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# make sure the commands will work before we run them.
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#if ( $commands{'awk'} && $commands{'grep'} ) { # we need grep and awk for all these
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if ( ! @out && ! checkOS ( $osList ) ) { # check if we are on an acceptible operating system
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#   print "$CATEGORY\tmemory\t" . &cleanUp('', qx(free | grep Mem | awk '{print \$2}')) . "\n" if $commands{'free'};
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#   if ( $directory{'/proc/cpuinfo'} ) { # and we need /proc/cpuinfo file for these
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    push @out, "$errorPrepend Invalid Operating System";
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#      print "$CATEGORY\tnum_cpu\t" . &cleanUp('', qx(cat /proc/cpuinfo | grep processor | wc -l | awk '{print \$1}')) . "\n";
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#      print "$CATEGORY\tcpu_speed\t" . &cleanUp('', qx(cat /proc/cpuinfo | grep MHz | tail -n1 | awk '{print \$4}')) . "\n";
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#      print "$CATEGORY\tcpu_type\t" . &cleanUp('', qx(cat /proc/cpuinfo | grep vendor_id | tail -n 1 | awk '{print \$3}')) . "\n";
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#   }
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#}
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}
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# all this needs is uname
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#print "$CATEGORY\tcpu_sub\t" . &cleanUp('', qx(uname -m)) . "\n" if $commands{'uname'};
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# need /proc/uptime to get the uptime
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if ( $directory{'/proc/uptime'} ) {
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   my $uptime = qx(cat /proc/uptime);
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   $uptime =~ m/(\d+)/;
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   $uptime = int($1); # uptime now has the up time in seconds
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if ( !@out && ! validCommandOnSystem ( $commandsList ) ) {
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   print "$CATEGORY\tlast_boot\t" . (time - $uptime) . "\n";
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   push @out, "$errorPrepend Can not find some commands needed";
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   print "$CATEGORY\tuptime\t" . $uptime . "\n";
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}
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}
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if ( !@out ) { # we made it, we have everything, so do the processing
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   #####
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   ##### Your code starts here. Remember to push all output onto @out
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   #####
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   # need /proc/uptime to get the uptime
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   if ( -e '/proc/uptime' ) {
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      my $uptime = qx(cat /proc/uptime);
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      $uptime =~ m/(\d+)/;
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      $uptime = int($1); # uptime now has the up time in seconds
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      push @out, "$CATEGORY\tlast_boot\t" . (time - $uptime);
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      push @out, "$CATEGORY\tuptime\t" . $uptime;
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   }
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   #####
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   ##### Your code ends here.
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   #####
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}
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# If we are testing from the command line (caller is undef), print the results for debugging
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print join( "\n", @out ) . "\n" unless caller;
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# called by do, which has a value of the last assignment made, so make the assignment. The equivilent of a return
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my $return = join( "\n", @out );
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exit 0;
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