Re: [PATCH v2] send-email: Net::SMTP::SSL is obsolete, use only when necessary

[Dennis Kaarsemaker <dennis@kaarsemaker.net>]

Second ping. This problem is not going away, so if this solution is not
acceptable, I'd like to know what needs to be improved.

On Thu, 2017-05-04 at 09:01 +0200, Dennis Kaarsemaker wrote:
> Ping. It's a little over a month since I sent this, but I haven't seen
> any comments. Is this commit good to go?
> 
> On Fri, 2017-03-24 at 22:37 +0100, Dennis Kaarsemaker wrote:
> > Net::SMTP itself can do the necessary SSL and STARTTLS bits just fine
> > since version 1.28, and Net::SMTP::SSL is now deprecated. Since 1.28
> > isn't that old yet, keep the old code in place and use it when
> > necessary.
> > 
> > While we're in the area, mark some messages for translation that were
> > not yet marked as such.
> > 
> > Signed-off-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
> > ---
> >  git-send-email.perl | 54 ++++++++++++++++++++++++++++++++++-------------------
> >  1 file changed, 35 insertions(+), 19 deletions(-)
> > 
> > diff --git a/git-send-email.perl b/git-send-email.perl
> > index eea0a517f7..0d90439d9a 100755
> > --- a/git-send-email.perl
> > +++ b/git-send-email.perl
> > @@ -1353,10 +1353,12 @@ EOF
> >  			die __("The required SMTP server is not properly defined.")
> >  		}
> >  
> > +		require Net::SMTP;
> > +		my $use_net_smtp_ssl = version->parse($Net::SMTP::VERSION) < version->parse("1.28");
> > +		$smtp_domain ||= maildomain();
> > +
> >  		if ($smtp_encryption eq 'ssl') {
> >  			$smtp_server_port ||= 465; # ssmtp
> > -			require Net::SMTP::SSL;
> > -			$smtp_domain ||= maildomain();
> >  			require IO::Socket::SSL;
> >  
> >  			# Suppress "variable accessed once" warning.
> > @@ -1368,34 +1370,48 @@ EOF
> >  			# Net::SMTP::SSL->new() does not forward any SSL options
> >  			IO::Socket::SSL::set_client_defaults(
> >  				ssl_verify_params());
> > -			$smtp ||= Net::SMTP::SSL->new($smtp_server,
> > -						      Hello => $smtp_domain,
> > -						      Port => $smtp_server_port,
> > -						      Debug => $debug_net_smtp);
> > +
> > +			if ($use_net_smtp_ssl) {
> > +				require Net::SMTP::SSL;
> > +				$smtp ||= Net::SMTP::SSL->new($smtp_server,
> > +							      Hello => $smtp_domain,
> > +							      Port => $smtp_server_port,
> > +							      Debug => $debug_net_smtp);
> > +			}
> > +			else {
> > +				$smtp ||= Net::SMTP->new($smtp_server,
> > +							 Hello => $smtp_domain,
> > +							 Port => $smtp_server_port,
> > +							 Debug => $debug_net_smtp,
> > +							 SSL => 1);
> > +			}
> >  		}
> >  		else {
> > -			require Net::SMTP;
> > -			$smtp_domain ||= maildomain();
> >  			$smtp_server_port ||= 25;
> >  			$smtp ||= Net::SMTP->new($smtp_server,
> >  						 Hello => $smtp_domain,
> >  						 Debug => $debug_net_smtp,
> >  						 Port => $smtp_server_port);
> >  			if ($smtp_encryption eq 'tls' && $smtp) {
> > -				require Net::SMTP::SSL;
> > -				$smtp->command('STARTTLS');
> > -				$smtp->response();
> > -				if ($smtp->code == 220) {
> > +				if ($use_net_smtp_ssl) {
> > +					$smtp->command('STARTTLS');
> > +					$smtp->response();
> > +					if ($smtp->code != 220) {
> > +						die sprintf(__("Server does not support STARTTLS! %s"), $smtp->message);
> > +					}
> > +					require Net::SMTP::SSL;
> >  					$smtp = Net::SMTP::SSL->start_SSL($smtp,
> >  									  ssl_verify_params())
> > -						or die "STARTTLS failed! ".IO::Socket::SSL::errstr();
> > -					$smtp_encryption = '';
> > -					# Send EHLO again to receive fresh
> > -					# supported commands
> > -					$smtp->hello($smtp_domain);
> > -				} else {
> > -					die sprintf(__("Server does not support STARTTLS! %s"), $smtp->message);
> > +						or die sprintf(__("STARTTLS failed! %s"), IO::Socket::SSL::errstr());
> > +				}
> > +				else {
> > +					$smtp->starttls(ssl_verify_params())
> > +						or die sprintf(__("STARTTLS failed! %s"), IO::Socket::SSL::errstr());
> >  				}
> > +				$smtp_encryption = '';
> > +				# Send EHLO again to receive fresh
> > +				# supported commands
> > +				$smtp->hello($smtp_domain);
> >  			}
> >  		}
> >