imapsync/W/learn/imapclient_tls

#!/usr/bin/perl -w

use Mail::IMAPClient;
use IO::Socket::SSL qw(debug1 debug2 debug3) ;

$ARGV[3] or die "usage: $0 host user password folder\n";

$host = $ARGV[0];
$user = $ARGV[1];
$password = $ARGV[2];
$folder = $ARGV[3];

my $imap = Mail::IMAPClient->new();


my $socket  = IO::Socket::INET->new(
             Proto    => 'tcp',
             PeerAddr => $host,
             PeerPort => 143,
);

$socket->autoflush(1);

my $banner = $socket->getline();
unless ($banner =~ /^\* OK \[CAPABILITY.*STARTTLS.*\]/) {
  die "No STARTTLS capability: $banner";
}


print $socket "STARTTLS\015\012";
my $txt = $socket->getline();
unless($txt =~ /^STARTTLS OK/){
  die "Invalid response for STARTTLS: $txt\n";
}

my $result = IO::Socket::SSL->start_SSL($socket,
    {
    SSL_startHandshake => 1, 
    SSL_version    =>      "TLSv1",
    SSL_verify_depth => 1,
    }
);

print "start_SSL return $result\n";

unless ($result){
  
  die "Couldn't start TLS: ".IO::Socket::SSL::errstr()."\n";
}

if (ref($socket) ne "IO::Socket::SSL") {
  die "Socket has not been converted to SSL";
}else{
  print "Socket has been converted to SSL\n";
}
$imap->State(Mail::IMAPClient::Connected);


$imap->Debug(1);
print "Socket\n";
$imap->RawSocket($socket);
#$imap->Socket($socket);

print $socket "a02 CAPABILITY\n";
print "getline\n";
$txt = $socket->getline();

print "getline : $txt \n";


#$imap->connect() or die;
print "User\n";
$imap->User($user);
$imap->Password($password);
print "login\n";

$imap->login() or die;
$imap->Uid(1);
$imap->Peek(1);
$imap->select($folder) or die;
$imap->close();