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[PATCH 1/3][V.2] git-send-email: ssh/login style password requests

From
Michael Witten <mfwitten@mit.edu>
Date
Feb 4, 2008, 00:53 UTC
Message-ID
<1202086438-16251-1-git-send-email-mfwitten@mit.edu>
In-Reply-To
<5C100A3B-0B4A-4D4E-B68B-1A54674A795A@mit.edu>

Whilst convenient, it is most unwise to record passwords in any place but one's brain. Moreover, it is especially foolish to store them in configuration files, even with access permissions set accordingly.

git-send-email has been amended, so that if it detects an smtp username without a password, it promptly prompts for the password and masks the input for privacy.

Furthermore, the argument to --smtp-pass has been rendered optional.

The documentation has been updated to reflect these changes.
Signed-off-by: Michael Witten <mfwitten@mit.edu>
---
	The backend ambiguity of Term:ReadLine is avoided, and EOF
	is handled for the Password Prompt.
 Documentation/git-send-email.txt |   39 +++++++++++++++++++++++++++++++++----
 git-send-email.perl              |   25 ++++++++++++++++++++---
 2 files changed, 55 insertions(+), 9 deletions(-)
diff --git a/Documentation/git-send-email.txt b/Documentation/git-send-email.txt
index 0554f2b..4f4caa4 100644
--- a/Documentation/git-send-email.txt
+++ b/Documentation/git-send-email.txt
@@ -96,11 +96,40 @@ The --cc option must be repeated for each user you want on the cc list.
 	servers typically listen to smtp port 25 and ssmtp port
 	465).
 
---smtp-user, --smtp-pass::
-	Username and password for SMTP-AUTH. Defaults are the values of
-	the configuration values 'sendemail.smtpuser' and
-	'sendemail.smtppass', but see also 'sendemail.identity'.
-	If not set, authentication is not attempted.
+--smtp-user::
+	Username for SMTP-AUTH. In place of this option, the following
+	configuration variables can be specified:
++
+--
+		* sendemail.smtpuser
+		* sendemail.<identity>.smtpuser (see sendemail.identity).
+--
++
+However, --smtp-user always overrides these variables.
++
+If a username is not specified (with --smtp-user or a
+configuration variable), then authentication is not attempted.
+
+--smtp-pass::
+	Password for SMTP-AUTH. The argument is optional: If no
+	argument is specified, then the empty string is used as
+	the password.
++
+In place of this option, the following configuration variables
+can be specified:
++
+--
+		* sendemail.smtppass
+		* sendemail.<identity>.smtppass (see sendemail.identity).
+--
++
+However, --smtp-pass always overrides these variables.
++
+Furthermore, passwords need not be specified in configuration files
+or on the command line. If a username has been specified (with
+--smtp-user or a configuration variable), but no password has been
+specified (with --smtp-pass or a configuration variable), then the
+user is prompted for a password while the input is masked for privacy.
 
 --smtp-ssl::
 	If set, connects to the SMTP server using SSL.
diff --git a/git-send-email.perl b/git-send-email.perl
index a1a9d14..fec55ea 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -157,7 +157,7 @@ my $compose_filename = ".msg.$$";
 
 # Variables we fill in automatically, or via prompting:
 my (@to,@cc,@initial_cc,@bcclist,@xh,
-	$initial_reply_to,$initial_subject,@files,$author,$sender,$compose,$time);
+	$initial_reply_to,$initial_subject,@files,$author,$sender,$smtp_authpass,$compose,$time);
 
 my $envelope_sender;
 
@@ -177,7 +177,7 @@ my ($quiet, $dry_run) = (0, 0);
 
 # Variables with corresponding config settings
 my ($thread, $chain_reply_to, $suppress_from, $signed_off_cc, $cc_cmd);
-my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_authpass, $smtp_ssl);
+my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_ssl);
 my ($identity, $aliasfiletype, @alias_files, @smtp_host_parts);
 my ($no_validate);
 
@@ -214,7 +214,7 @@ my $rc = GetOptions("sender|from=s" => \$sender,
 		    "smtp-server=s" => \$smtp_server,
 		    "smtp-server-port=s" => \$smtp_server_port,
 		    "smtp-user=s" => \$smtp_authuser,
-		    "smtp-pass=s" => \$smtp_authpass,
+		    "smtp-pass:s" => \$smtp_authpass,
 		    "smtp-ssl!" => \$smtp_ssl,
 		    "identity=s" => \$identity,
 		    "compose" => \$compose,
@@ -647,9 +647,26 @@ X-Mailer: git-send-email $gitversion
 			die "Unable to initialize SMTP properly.  Is there something wrong with your config?";
 		}
 
-		if ((defined $smtp_authuser) && (defined $smtp_authpass)) {
+		if (defined $smtp_authuser) {
+
+			if (!defined $smtp_authpass) {
+
+				system "stty -echo";
+
+				do {
+					print "Password: ";
+					$_ = <STDIN>;
+					print "\n";
+				} while (!defined $_);
+
+				chomp($smtp_authpass = $_);
+
+				system "stty echo";
+			}
+
 			$auth ||= $smtp->auth( $smtp_authuser, $smtp_authpass ) or die $smtp->message;
 		}
+
 		$smtp->mail( $raw_from ) or die $smtp->message;
 		$smtp->to( @recipients ) or die $smtp->message;
 		$smtp->data or die $smtp->message;
-- 
1.5.4.9.gcc769-dirty
Previous: Michael WittenNext: Michael Witten
Message 14 of 16 in “git-send-email: ssh/login style password requests”
  1. git-send-email: ssh/login style password requestsMichael Witten, Feb 1, 2008
  2. Junio C HamanoFeb 1, 2008
  3. Michael WittenFeb 1, 2008
  4. Michael WittenFeb 1, 2008
  5. Junio C HamanoFeb 1, 2008
  6. Michael WittenFeb 1, 2008
  7. Junio C HamanoFeb 2, 2008
  8. 1/2 [Perlers?] git-send-email: ssh/login style password requestsMichael Witten, Feb 2, 2008
  9. 2/2 [Perlers?] git-send-email: SIG{TERM,INT} handlersMichael Witten, Feb 2, 2008
  10. Junio C HamanoFeb 2, 2008
  11. Junio C HamanoFeb 2, 2008
  12. Michael WittenFeb 3, 2008
  13. Michael WittenFeb 3, 2008
  14. 1/3 [V.2] git-send-email: ssh/login style password requestsMichael Witten, Feb 4, 2008
  15. 2/3 [V.2] git-send-email: SIG{TERM,INT} handlersMichael Witten, Feb 4, 2008
  16. 3/3 [V.2] git-send-email: Better handling of EOF [^D]Michael Witten, Feb 4, 2008

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