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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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use utf8;                                # Source code encoded using UTF-8
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# Description: Get software installed by dpkg or apt(itutde) (Debian)
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our $VERSION = '1.2';
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use version ; our $VERSION = 'v4.0.0';
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# Debian software module for sysinfo client
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# Debian software 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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#
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# gets information on software on systems with dpkg on them (Debian)
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# gets information on software on systems with dpkg on them (Debian)
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#
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# Revision History
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#
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# 20250330 v4.0.0 Rodolico
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# Modified for v4 of sysinfo_client, using extended tests for modules, files used and operating systems
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# Underlying code remains unchanged
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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
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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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   die sprintf( "Could not find library.pm in %s, INC is %s\n", __FILE__, join( "\n", @INC ) ) if $@;
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}
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}
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#####
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# check for valid OS.
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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 $modulesList = {
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exit 1 unless &checkOS( { 'linux' => undef } );
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        'Data::Dumper'     => undef,
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   };
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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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# 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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# script returns a 2
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my $commandsList = {
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foreach my $command ( 'dpkg', 'grep' ) {
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        'dpkg' => undef,
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   exit 2 unless &validCommandOnSystem( $command );
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        'grep' => undef,
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   };
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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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         'linux'   => undef,
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   };
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# the category the return data should go into. See sysinfo for a list
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my $CATEGORY = 'software';
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my $CATEGORY = 'software';
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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 @packageList  = split( "\n", qx(dpkg -l | grep ^i));
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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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chomp @packageList;
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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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if ( ! @out && ! checkOS ( $osList ) ) { # check if we are on an acceptible operating system
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    push @out, "$errorPrepend Invalid Operating System";
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}
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if ( !@out && ! validCommandOnSystem ( $commandsList ) ) {
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   push @out, "$errorPrepend Can not find some commands needed";
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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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   my @packages  = split( "\n", qx(dpkg -l | grep ^i) );
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   chomp @packages;
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for ( my $i = 0; $i < @packageList; $i++ ) {
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   for ( my $i = 0; $i < @packages; $i++ ) {
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   utf8::encode( $packageList[$i] );
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      utf8::encode( $packages[$i] );
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   my ($status,$package, $version, @description) = split ' ', $packageList[$i];
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      my ($status,$package, $version, @description) = split ' ', $packages[$i];
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   print "$CATEGORY\t$package\tversion\t$version\n";
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      push @out, "$CATEGORY\t$package\tversion\t$version";
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   print "$CATEGORY\t$package\tdescription\t" . join(" ", @description) . "\n";
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      push @out, "$CATEGORY\t$package\tdescription\t" . join(" ", @description);
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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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}
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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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