#!/usr/local/cpanel/3rdparty/bin/perl

# cpanel - scripts/httpspamdetect                  Copyright 2022 cPanel, L.L.C.
#                                                           All rights reserved.
# copyright@cpanel.net                                         http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited

use strict;
use warnings;

use Cpanel::AcctUtils::DomainOwner::Tiny ();
use Cpanel::SafeRun::Simple              ();
use Socket;

my %HTTPPIDS;
my %HTTPVHOSTS;
my %HTTPURL;
my %HTTPOWNER;
my %PCOUNT;

eval {
    $SIG{'ALRM'} = sub {
        die;
    };
    alarm(30);
    my $proto = getprotobyname('tcp');
    socket( WHMS, AF_INET, SOCK_STREAM, $proto );
    my $iaddr = inet_aton("127.0.0.1");
    my $port  = getservbyname( 'http', 'tcp' );
    my $sin   = sockaddr_in( $port, $iaddr );
    connect( WHMS, $sin );
    send WHMS, "GET /whm-server-status HTTP/1.0\r\n\r\n", 0;
    shutdown( WHMS, 1 );

    while ( my $nline = <WHMS> ) {
        if ( $nline =~ m/^\<tr bgcolor=\"#ffffff\"\>\<td\>\<b\>\d+/ ) {
            if ( $nline =~ m/\d+\-\d+\<[^\>]*\>\<[^\>]*\>(\d+)/ ) {
                my $pid = $1;
                $nline = <WHMS>;
                $nline = <WHMS>;
                if ( $nline =~ m/^\<td[^\>]*\>\<font[^\>]*\>[\d+\.]*\<[^\>]*\><[^\>]*\><[^\>]*\>([^\<]*)\<[^\>]*\>\<[^\>]*\>\<[^\>]*\>([^\<]*)/ ) {
                    my $vhost = $1;
                    my $req   = $2;
                    my $url   = ( split( /\s/, $req, 3 ) )[1];
                    my $user;
                    if ( $url && $url =~ m/^\/~([^\/]*)/ ) {
                        $user = $1;
                    }
                    else {
                        $user = Cpanel::AcctUtils::DomainOwner::Tiny::getdomainowner($vhost);
                    }
                    if ($user) {
                        $HTTPPIDS{$pid}   = 1;
                        $HTTPVHOSTS{$pid} = $vhost;
                        $HTTPURL{$pid}    = $url;
                        $HTTPOWNER{$pid}  = $user;
                    }
                }
            }
        }
    }
    alarm(0);
};
alarm(0);
shutdown( WHMS, 2 );
close(WHMS);

my @PROCS = Cpanel::SafeRun::Simple::saferun( 'ps', 'axo', 'user,pid,ppid,command' );
foreach (@PROCS) {
    my ( $user, $pid, $ppid, $cmd ) = split( /\s+/, $_ );
    if ( $cmd =~ m/exim/ || $cmd =~ m/mail/ ) {
        $PCOUNT{ $HTTPOWNER{$ppid} }++;
        if ( $HTTPPIDS{$ppid} == 1 && $PCOUNT{ $HTTPOWNER{$ppid} } > 6 ) {
            print "Pid $ppid is mailing using [$cmd]..\n";
            print "Host: $HTTPVHOSTS{$ppid}\n";
            print "Url: $HTTPURL{$ppid}\n";
            print "User: $HTTPOWNER{$ppid}\n\n";
        }
    }
}