Brandon wrote:
> Good Morning,
>
> I'm having a total brain dead morning and can't figure out what I'm doing
> wrong when it comes to creating a session to an SMTP server with
> IO::Socket. The mail system asks me to end DATA portion with a "." on a
> single line. When I telnet in, I'm able to end the session with a single
> dot on a line by itself. But when I run the script I built below, I have a
> problem doing so. Here is the output:
>
> MESSAGE: 172.18.252.18
> localaddr = 172.18.252.18
> 220 testlab ESMTP CommuniGate Pro 4.2.1 is glad to see you!
> 250 testlab we trust you ganymede
> 250 [EMAIL PROTECTED] sender accepted
> 250 [EMAIL PROTECTED] will leave the Internet
> 354 Enter mail, end with "." on a line by itself
>
> Can anyone see anything that I'm blatantly doing wrong?
>
>
> #!/usr/bin/perl
> use strict;
> use warnings;
> use diagnostics;
> use IO::Socket;
>
> # Turn on autoflush to get around holding data too long to fill a buffer.
> $| = 1;
>
> # Some configuration options
> my %cfg;
> $cfg{PeerAddr} = "172.18.252.21"; # Destination to test
> $cfg{PeerPort} = "25"; # Port
> $cfg{Proto} = "tcp"; # Protocol
> $cfg{LocalAddr} = "127.0.0.1"; # Default IP Address - this breaks
> by default
> $cfg{Timeout} = "5"; # Socket Timeout
> $cfg{LOGFILE} = "/tmp/mail.log"; # Mail log / debug log
> $cfg{IPFILE} = "/tmp/ip.db"; # IP Database of local ip's
> $cfg{DEBUG} = 15; # Debug Level
>
> initialize();
>
>
> sub initialize {
> logger(5, "Intializing $0");
> my $val;
> my $msg;
> my $ip;
> ($val,$ip) = calc_source_ip();
> if ($val) {
> logger(15, "calc_source_ip() returned val=$val, msg=$msg");
> }
> ($val,$msg) = init_socket($ip);
> if (!$val) {
> exit;
> }
>
>
> }
Check the return codes from these subs - they don't look uniform.
> # Figure out what source IP address to send as. This file will be full of
> them for testing purposes.
> sub calc_source_ip {
> my $msg;
> my $val;
> open (IPDB, "$cfg{IPFILE}") || ($val = 1);
> while (<IPDB>) {
> if ( /(\d+\.\d+\.\d+\.\d+)/ ) {
> $msg = $1;
> print "MESSAGE: $msg\n";
> }
> }
> close (IPDB);
> return($val,$msg);
> }
> # Build the socket, talk to the SMTP Server. Will move this into two
> subroutines.
> sub init_socket {
> my $localaddr = shift;
> print "localaddr = $localaddr";
> my $msg;
> my $val;
> my $subject;
> my $rdata;
> my $tdata;
> my $socket = IO::Socket::INET->new(PeerAddr => $cfg{PeerAddr},
> PeerPort => $cfg{PeerPort},
> Proto => $cfg{Proto},
> Type => SOCK_STREAM,
> LocalAddr => $localaddr,
> )
> or return(1,$@);
>
> print "\n";
>
> $rdata = <$socket>;
> print $rdata;
Try printing both sides of the conversation to start with :
print 'RCVD: ' . $rdata;
print 'SENT: ' . "helo ganymede\n";
You should be checking the return status codes before sending more data.
I'll send some code separately for this area that you can modify.
> print $socket "helo ganymede\n";
> $rdata = <$socket>;
> print $rdata;
> print $socket "mail from:[EMAIL PROTECTED]";
> $rdata = <$socket>;
> print $rdata;
> print $socket "rcpt to:[EMAIL PROTECTED]";
> $rdata = <$socket>;
> print $rdata;
> print $socket "data\n";
> $rdata = <$socket>;
> print $rdata;
> print $socket "Subject: This is a test message\n";
> $rdata = <$socket>;
> print $rdata;
> print $socket "Hello from ganymede. This is to test the spam
> engine\n";
> $rdata = <$socket>;
> print $rdata;
> # this should be the "." on the single line, but what the heck?
> print $socket "\r\n.\r\n";
> print $socket "\r\n.\r\n";
> $rdata = <$socket>;
> print $rdata;
> print $socket "quit\n";
> $rdata =<$socket>;
> print $rdata;
> return 0;
> }
> # logging subroutine
> sub logger {
> my $dval = shift;
> my $log = shift;
> if ($cfg{DEBUG} >= $dval) {
> $log =~ s/\n//g;
> open(FOUT, ">>$cfg{LOGFILE}");
> print FOUT (scalar(localtime()) . ": $log\n");
> close(FOUT);
> }
> }
--
,-/- __ _ _ $Bill Luebkert Mailto:[EMAIL PROTECTED]
(_/ / ) // // DBE Collectibles Mailto:[EMAIL PROTECTED]
/ ) /--< o // // Castle of Medieval Myth & Magic http://www.todbe.com/
-/-' /___/_<_</_</_ http://dbecoll.tripod.com/ (My Perl/Lakers stuff)
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