#!/usr/bin/perl -w
#
# a perl tool to make a exploit hunters life easier. looks through source code
# for possible exploits. the line found may not be an actual exploit, but it
# sure does spot possible ones faster than you could by hand. you can add
# functions that should be searched for yourself by editing func.db. also this
# tool has the ability to tail certain variables that you may find interesting.
# since sometimes you will find a possible exploit, but not able to figure out
# if the variable in the function is allready declared or not, you use this
# option to follow that variable and figure out if it is or not.
#
# $Id: audit.pl,v 0.1 2007/O2/17 08:21:00 varc Exp $

use strict;
use Getopt::Long;

my ( $dir, $trail );
my $options = { d => \$dir, t => \$trail };
GetOptions( $options, "d=s", "t:s" );

&usage unless $dir;

find( { wanted => \&scan, no_chdir => 1 }, $dir );

sub scan ( )
{
        my $fi = $File::Find::name;

        open( FILE, "func.db") or die("Failed  to open func.db - $!" );
        my @func = <FILE>;
        close( FILE );

        if ( ( $fi =~ /\.php$/i ) ||
             ( $fi =~ /\.inc$/i ) ||
             ( $fi =~ /\.inc.php$/i) ||
             ( $fi =~ /\.php4$/i) )
        {
                open( FILY, "$fi" ) or warn "Failed to open $fi - $!";
                foreach my $line ( <FILY> )
                {
                        foreach my $fline ( @func )
                        {
                                if ( $line =~ $fline )
                                {
                                        my $inc = $1;
                                        if ( $inc =~ /\$/ )
                                        {
                                                print $fi . " [" . $inc . "] " . $line;
                                        }
                                }
                        }
                }
        }
}

sub usage
{
        print "source code auditor\n";
        print "usage: perl $0 -dt\n\n";
        print "  -d\t\tdirectory with the source code to scan\n";
        print "  =t\t\tvariable to trail (optional)\n";
        exit;
}