[PATCH v3 0/4] send-email: --smtp-domain improvements

[PATCH v3 0/4] send-email: --smtp-domain improvements

[Brian Gernhardt]

Next iteration of my small series of fixes to --smtp-domain.

Changes since v2:

1/4: Added a patch that standardizes on a single bracket style for subs.

2/4: Fixed the style of valid_fqdn() and calls to it.

4/4: Remove default variable and significantly improve commit message.

Many thanks to Jakub Narebski for his repeated suggestions.

Brian Gernhardt (4):
  send-email: Cleanup { style
  send-email: Don't use FQDNs without a '.'
  Document send-email --smtp-domain
  send-email: Cleanup smtp-domain and add config

 Documentation/config.txt         |    1 +
 Documentation/git-send-email.txt |    7 +++++
 git-send-email.perl              |   48 +++++++++++++++++--------------------
 3 files changed, 30 insertions(+), 26 deletions(-)

[PATCH v3 1/4] send-email: Cleanup { style

[Brian Gernhardt]

As Jakub Narebski pointed out on the list, Perl code usually prefers

  sub func {
  }

over

  sub func
  {
  }

git-send-email.perl is somewhat inconsistent in its style, with 23
subroutines using the first style and 6 using the second.  Convert the
few odd subroutines so that the code matches normal Perl style.

Signed-off-by: Brian Gernhardt <brian@gernhardtsoftware.com>
---
 git-send-email.perl |   18 ++++++------------
 1 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/git-send-email.perl b/git-send-email.perl
index ce569a9..26fe624 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -761,8 +761,7 @@ sub extract_valid_address {
 # We'll setup a template for the message id, using the "from" address:
 
 my ($message_id_stamp, $message_id_serial);
-sub make_message_id
-{
+sub make_message_id {
 	my $uniq;
 	if (!defined $message_id_stamp) {
 		$message_id_stamp = sprintf("%s-%s", time, $$);
@@ -817,8 +816,7 @@ sub is_rfc2047_quoted {
 }
 
 # use the simplest quoting being able to handle the recipient
-sub sanitize_address
-{
+sub sanitize_address {
 	my ($recipient) = @_;
 	my ($recipient_name, $recipient_addr) = ($recipient =~ /^(.*?)\s*(<.*)/);
 
@@ -863,8 +861,7 @@ sub sanitize_address
 # This maildomain*() code is based on ideas in Perl library Test::Reporter
 # /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
 
-sub maildomain_net
-{
+sub maildomain_net {
 	my $maildomain;
 
 	if (eval { require Net::Domain; 1 }) {
@@ -876,8 +873,7 @@ sub maildomain_net
 	return $maildomain;
 }
 
-sub maildomain_mta
-{
+sub maildomain_mta {
 	my $maildomain;
 
 	if (eval { require Net::SMTP; 1 }) {
@@ -898,8 +894,7 @@ sub maildomain_mta
 	return $maildomain;
 }
 
-sub maildomain
-{
+sub maildomain {
 	return maildomain_net() || maildomain_mta() || $mail_domain_default;
 }
 
@@ -907,8 +902,7 @@ sub maildomain
 # In actuality, the whole program dies when there
 # is an error sending a message.
 
-sub send_message
-{
+sub send_message {
 	my @recipients = unique_email_list(@to);
 	@cc = (grep { my $cc = extract_valid_address($_);
 		      not grep { $cc eq $_ } @recipients
-- 
1.7.1.rc0.251.g42f41

Re: [PATCH v3 1/4] send-email: Cleanup { style

[Junio C Hamano]

Thanks; will queue all four of them.

[PATCH v3 2/4] send-email: Don't use FQDNs without a '.'

[Brian Gernhardt]

Although Net::Domain::domainname attempts to be very thorough, the
host's configuration can still refuse to give a FQDN.  Check to see if
what we receive contains a dot as a basic sanity check.

Since the same condition is used twice and getting complex, let's move
it to a new function.

Signed-off-by: Brian Gernhardt <brian@gernhardtsoftware.com>
---
 git-send-email.perl |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/git-send-email.perl b/git-send-email.perl
index 26fe624..1e9bec1 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -861,13 +861,17 @@ sub sanitize_address {
 # This maildomain*() code is based on ideas in Perl library Test::Reporter
 # /usr/share/perl5/Test/Reporter/Mail/Util.pm ==> sub _maildomain ()
 
+sub valid_fqdn {
+	my $domain = shift;
+	return !($^O eq 'darwin' && $domain =~ /\.local$/) && $domain =~ /\./;
+}
+
 sub maildomain_net {
 	my $maildomain;
 
 	if (eval { require Net::Domain; 1 }) {
 		my $domain = Net::Domain::domainname();
-		$maildomain = $domain
-			unless $^O eq 'darwin' && $domain =~ /\.local$/;
+		$maildomain = $domain if valid_fqdn($domain);
 	}
 
 	return $maildomain;
@@ -883,8 +887,7 @@ sub maildomain_mta {
 				my $domain = $smtp->domain;
 				$smtp->quit;
 
-				$maildomain = $domain
-					unless $^O eq 'darwin' && $domain =~ /\.local$/;
+				$maildomain = $domain if valid_fqdn($domain);
 
 				last if $maildomain;
 			}
-- 
1.7.1.rc0.251.g42f41

[PATCH v3 3/4] Document send-email --smtp-domain

[Brian Gernhardt]

Signed-off-by: Brian Gernhardt <brian@gernhardtsoftware.com>
---
 Documentation/git-send-email.txt |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/Documentation/git-send-email.txt b/Documentation/git-send-email.txt
index ced35b2..f171471 100644
--- a/Documentation/git-send-email.txt
+++ b/Documentation/git-send-email.txt
@@ -119,6 +119,12 @@ Sending
 	value reverts to plain SMTP.  Default is the value of
 	'sendemail.smtpencryption'.
 
+--smtp-domain=<FQDN>::
+	Specifies the Fully Qualified Domain Name (FQDN) used in the
+	HELO/EHLO command to the SMTP server.  Some servers require the
+	FQDN to match your IP address.  If not set, git send-email attempts
+	to determine your FQDN automatically.
+
 --smtp-pass[=<password>]::
 	Password for SMTP-AUTH. The argument is optional: If no
 	argument is specified, then the empty string is used as
-- 
1.7.1.rc0.251.g42f41

[PATCH v3 4/4] send-email: Cleanup smtp-domain and add config

[Brian Gernhardt]

The way the code stored --smtp-domain was unlike its handling of other
similar options.  Bring it in line with the others by:

- Renaming $mail_domain to $smtp_domain to match the command line
  option. Also move its declaration from near the top of the file to
  near other option variables.

- Removing $mail_domain_default.  The variable was used once and only
  served to move the default away from where it gets used.

- Adding a sendemail.smtpdomain config option.  smtp-domain was the
  only SMTP configuration option that couldn't be set in the user's
  .gitconfig.

Signed-off-by: Brian Gernhardt <brian@gernhardtsoftware.com>
---
 Documentation/config.txt         |    1 +
 Documentation/git-send-email.txt |    3 ++-
 git-send-email.perl              |   19 +++++++++----------
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 626b19a..b755beb 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1651,6 +1651,7 @@ sendemail.smtppass::
 sendemail.suppresscc::
 sendemail.suppressfrom::
 sendemail.to::
+sendemail.smtpdomain::
 sendemail.smtpserver::
 sendemail.smtpserverport::
 sendemail.smtpuser::
diff --git a/Documentation/git-send-email.txt b/Documentation/git-send-email.txt
index f171471..288a4ec 100644
--- a/Documentation/git-send-email.txt
+++ b/Documentation/git-send-email.txt
@@ -123,7 +123,8 @@ Sending
 	Specifies the Fully Qualified Domain Name (FQDN) used in the
 	HELO/EHLO command to the SMTP server.  Some servers require the
 	FQDN to match your IP address.  If not set, git send-email attempts
-	to determine your FQDN automatically.
+	to determine your FQDN automatically.  Default is the value of
+	'sendemail.smtpdomain'.
 
 --smtp-pass[=<password>]::
 	Password for SMTP-AUTH. The argument is optional: If no
diff --git a/git-send-email.perl b/git-send-email.perl
index 1e9bec1..111c981 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -132,8 +132,6 @@ my $have_email_valid = eval { require Email::Valid; 1 };
 my $have_mail_address = eval { require Mail::Address; 1 };
 my $smtp;
 my $auth;
-my $mail_domain_default = "localhost.localdomain";
-my $mail_domain;
 
 sub unique_email_list(@);
 sub cleanup_compose_files();
@@ -190,7 +188,7 @@ sub do_edit {
 # Variables with corresponding config settings
 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
 my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
-my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
+my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts, $smtp_domain);
 my ($validate, $confirm);
 my (@suppress_cc);
 
@@ -212,6 +210,7 @@ my %config_settings = (
     "smtpserverport" => \$smtp_server_port,
     "smtpuser" => \$smtp_authuser,
     "smtppass" => \$smtp_authpass,
+	"smtpdomain" => \$smtp_domain,
     "to" => \@to,
     "cc" => \@initial_cc,
     "cccmd" => \$cc_cmd,
@@ -283,7 +282,7 @@ my $rc = GetOptions("sender|from=s" => \$sender,
 		    "smtp-ssl" => sub { $smtp_encryption = 'ssl' },
 		    "smtp-encryption=s" => \$smtp_encryption,
 		    "smtp-debug:i" => \$debug_net_smtp,
-		    "smtp-domain:s" => \$mail_domain,
+		    "smtp-domain:s" => \$smtp_domain,
 		    "identity=s" => \$identity,
 		    "annotate" => \$annotate,
 		    "compose" => \$compose,
@@ -898,7 +897,7 @@ sub maildomain_mta {
 }
 
 sub maildomain {
-	return maildomain_net() || maildomain_mta() || $mail_domain_default;
+	return maildomain_net() || maildomain_mta() || 'localhost.localdomain';
 }
 
 # Returns 1 if the message was sent, and 0 otherwise.
@@ -1002,18 +1001,18 @@ X-Mailer: git-send-email $gitversion
 		if ($smtp_encryption eq 'ssl') {
 			$smtp_server_port ||= 465; # ssmtp
 			require Net::SMTP::SSL;
-			$mail_domain ||= maildomain();
+			$smtp_domain ||= maildomain();
 			$smtp ||= Net::SMTP::SSL->new($smtp_server,
-						      Hello => $mail_domain,
+						      Hello => $smtp_domain,
 						      Port => $smtp_server_port);
 		}
 		else {
 			require Net::SMTP;
-			$mail_domain ||= maildomain();
+			$smtp_domain ||= maildomain();
 			$smtp ||= Net::SMTP->new((defined $smtp_server_port)
 						 ? "$smtp_server:$smtp_server_port"
 						 : $smtp_server,
-						 Hello => $mail_domain,
+						 Hello => $smtp_domain,
 						 Debug => $debug_net_smtp);
 			if ($smtp_encryption eq 'tls' && $smtp) {
 				require Net::SMTP::SSL;
@@ -1036,7 +1035,7 @@ X-Mailer: git-send-email $gitversion
 			die "Unable to initialize SMTP properly. Check config and use --smtp-debug. ",
 			    "VALUES: server=$smtp_server ",
 			    "encryption=$smtp_encryption ",
-			    "maildomain=$mail_domain",
+			    "hello=$smtp_domain",
 			    defined $smtp_server_port ? "port=$smtp_server_port" : "";
 		}
 
-- 
1.7.1.rc0.251.g42f41