#!/usr/local/bin/perl
# Usage:
#   open-relay-test  target-host-to-examine
# 
use IPC::Open2;

init();
init_envelop();   # init array for the test cases
start();          # start SMTP session
# test loop
foreach $j ( 0.. $#envelop ) {
    session($j);}
#    test($j);}
print WTR $quit ; 

foreach $j ( sort { $a <=> $b } keys %problem ) {
    print $j, " ";}
print "\nNumbers listed above have a problem.\n";

if ( $pid ) {
    kill (9,$pid) || print " ** Problem killing pid($pid)\n";}
exit;
# ------- S U B   R O U T I N E  ----------
sub init_envelop { 
    $victim  = 'userid';    # your  userid
    $target  = 'hostname' ; # your domain (can be anything)

    @envelop = 
                  # classic open relay
( [ "<spambag\@fake.domain>",    "<$victim\@$target>"    ],
		  # sendmail 8.8.8 double quote
  [ "<spambag\@fake.domain>",  "<\"$victim\@$target\">"],
		  # no < >
  [ "<spambag\@fake.domain>",    "$victim\@$target"      ],
                  # no domain
  [ "<spambag>"             ,  "<$victim\@$target>"    ],
		  # relay
  [ "<spambag\@fake.domain>",    "<$victim\%$target\@$hostname>" ],
                  # relay ( % -> @ )
  [ "<spambag\@fake.domain>",    "<$victim\%$target\@$hostname>" ],
                  # uucp addressing
  [ "<spambag\@fake.domain>",    "<$hostname!$victim\%$target>" ],
                  # pathing
  [ "<spambag\@fake.domain>",    "<\@$hostname:$victim\%$target>" ],
                  # uucp
  [ "<fake.domain!sapmbag>" ,    "<$target!$victim>" ],

		 );
}
sub test { # not used now, just for debug
    my $iii = $_ [0];
    print $envelop[$iii] -> [0]."\n";
    print $envelop[$iii] -> [1]."\n";
}
sub sigint_handler {
    if ($pid) {
	kill 9,$pid;}
    exit;
}
sub init {
    $SIG{'INT'} = 'sigint_handler';
    $hostname = `hostname`;
    chomp($hostname);

    if ( $#ARGV > -1 ) {
	$target_name = $ARGV[0];}
    else {
	$target_name = 'localhost';}

    $cmd   = "telnet $target_name smtp";
    $pid   = open2(\*RDR, \*WTR, $cmd);

    $quit      = "quit\n";
    $helo      = "HELO $hostname\n";
    
    @mail = ( "
From: makoto\@fujiwara

test test test part
.
"
);

}
sub start {
    my $exit = 0;
    while(<RDR>) {
## 	print '  -- ', $_ ;
	if ( /^Trying/ ) { next; }
	if ( /^Connected/ ) { next; }
	if ( /^Escape cha/ ) { next; }
	if ( /^220 .* .*SMTP/ ) {
	    print ;
	    print WTR $helo;  }
	elsif ( /^250 .* pleased to meet you/ ) {
	    last;}
    }}
sub session {
    my $iii = $_ [0];
    my $reset = 0 ;
    print "Item($iii)\n";
    print WTR 'MAIL FROM: '. $envelop[$iii] -> [0] ."\n";
    while(<RDR>) {
	if ( /^250 .* Sender ok/ ) {
	    print '  -- ', $_ ;
	    print WTR 'RCPT TO: '  . $envelop[$iii] -> [1] ."\n";}	
	elsif ( /^250 .* Recipient ok/ ) {
	    print '  -- ', $_ ;
	    print WTR "DATA\n";}
	elsif ( /^354 Enter mail, end/ ) {    
	    print WTR @mail;}
	elsif ( /^5\d+ .*/ ) {
	    print '  -- ', $_ ;
	    print WTR "RSET\n";
	}
	elsif ( /^250 .* Rset state/ | /^250 .* Reset state/ 
		) {
	    print WTR "NOOP\n";
	    print '  -- ', $_ ;
	    $reset++; }
	elsif ( /^503 .* Sender already specified/ ) {
	    print '  +- ', $_ ;
	    print WTR "RSET\n"; }
	elsif ( /^250 .* OK/ ) { # response to NOOP maybe,
	    last ;}
	elsif ( /^250 .*Message accepted/ ) {
	    $problem{$iii} ++; 
	    last ;}
    }
#    print " -*- session exiting---\n";
}
__END__
$Log: open-relay-test,v $
Revision 1.1  2000/12/29 13:10:21  makoto
Initial revision

Revision 1.5  2000/04/05 02:47:54  makoto
may be OK now


TODO
sig hander for killing leftout telnet process
553 reset sender alread specified problem