sendmail-base 8.14.4-8+deb8u2 / usr / share / sendmail / update_tlsm4

#!/usr/bin/perl -w
#------------------------------------------------------------------------
#
# $Sendmail: update_tls,v 8.14.4 2017-02-05 23:17:28 cowboy Exp $
#
# Create /etc/mail/tls/starttls.m4 for Debian Sendmail
#
# Copyright 1998-2010 Richard Nelson.  All Rights Reserved.
#
# Notes (to all):
#	*
#
# Notes (to self):
#	*
#
#------------------------------------------------------------------------
#
# Initialization of the perl environment
use strict;			# be kosher
use Cwd;			# provide cwd()
use Env;			# A few environmental references
use integer;		# Peformance
use Sys::Hostname;	# make sure we have a valid hostname
use Getopt::Long;	# parameter handling

# Local libraries - for Debian Sendmail Perl helper functions
# BEGIN { $main::my_path = substr($0,$[,rindex($0,'/')) };
use lib ('.', substr($0,$[,rindex($0,'/')), "/usr/share/sendmail");
require Parse_mc;

# Version of this program
#($main::MYNAME			= $main::0) =~ s|.*/||;
#$main::Author			= "Richard Nelson";
#$main::AuthorMail		= "cowboy\@debian.org";
#$main::Version			= '$Revision: 2.00 $ ';
$main::program_name    = $0;
$main::program_version = '8.14.4';
$main::program_date    = '2017-02-05 23:17:28 cowboy';
$main::debug			= 0;

my $interp_pgm = "$^X";
my $interp_vrm = $];
$interp_vrm = ("$^V" | '000') if (defined $^V);
my $current_time = scalar localtime;
my $user = getlogin || (getpwuid($<))[0] || "Unknown!!";
my $hostname = hostname();
my $directory = getcwd();

my $Starttls_def = "/etc/mail/tls/starttls.m4";

# Hash of define names to filename
my %Def_Map;

#
#------------------------------------------------------------------------------
# Finally, some code (almost)
#------------------------------------------------------------------------------
#
# Argument handling...
$main::opt_help='';
$main::opt_output_file='';
$main::opt_input_file='';
$main::opt_debug='';
my @options = qw(
	help|h
	output-file|output_file|o:s
	input-file|input_file|i:s
	debug!
	);
my $result = GetOptions(@options);
if ( ! $result ) {
	die "Terminating due to parameter error";
	};
if ( $main::opt_help ) {
	warn "$main::program_name $main::program_version $main::program_date\n";
	warn "$0 \n";
	warn "	 -help\n" if $main::opt_help;
	warn "	 -debug\n" if $main::opt_debug;
	warn "	 -o $main::opt_output_file\n" if $main::opt_output_file;
	warn "	 -i $main::opt_input_file\n"  if $main::opt_input_file;
	exit 0;
	};

my $Starttls = $main::opt_output_file || $Starttls_def;
${Parse_mc::database_file} = $main::opt_input_file
	if $main::opt_input_file;
# $main::debug is used in Parse_mc !
$main::debug = $main::opt_debug || $main::debug;

# Let them know wtf is going on...
print STDOUT "Creating ${Starttls}...\n";

# Read the mc/m4 files
&Parse_mc::read_dbs($Parse_mc::database_file, '');

# Obtain Starttls information from database
&get_data;

# Write out the textual representation
&write_starttls;


#
#------------------------------------------------------------------------------
# Obtain information from database
#------------------------------------------------------------------------------
sub get_data {
	my @names = (
			 'confTO_STARTTLS'
			,'confCACERT'
			,'confCACERT_PATH'
			,'confCRL'
			,'confCLIENT_CERT'
			,'confCLIENT_KEY'
			,'confSERVER_CERT'
			,'confSERVER_KEY'
			,'confDH_PARAMETERS'
			,'confTLS_SRV_OPTIONS'
			);

	foreach my $entry (@names) {
		my ($class, $flags, $files, $options) =
			&Parse_mc::entry_dbs($entry);
		my $file = @{$files}[0];
		$Def_Map{$entry} = '';
		$Def_Map{$entry} = $file if ($file ne '-');
		#$Def_Map{$entry} = &Parse_mc::format_dbs($entry);
		};
	};


#
#------------------------------------------------------------------------------
# Create /etc/mail/tls/starttls.m4
#------------------------------------------------------------------------------
sub write_starttls {
	my $ofh = new FileHandle;

	$Starttls = '&STDOUT' if ($Starttls eq '-');
	unless ( open($ofh, ">$Starttls") ) {
		warn("Could not open $Starttls($!), using STDOUT.\n");
		open($ofh, ">&STDOUT");
		};
	$Starttls = '-' if ($Starttls eq '&STDOUT');

	&write_m4($ofh);

	close $ofh;
	if ($Starttls eq $Starttls_def) {
		chown '0', '0', $Starttls;
		chmod 0744, $Starttls;
		};
	};


#
#------------------------------------------------------------------------------
# Write Starttls m4 file
#------------------------------------------------------------------------------
sub write_m4 {
	my ($ofh) = @_;

	print $ofh <<"EOT";
divert(-1)dnl
####################################################################
##### This file is automagically generated -- edit at your own risk
#####
##### Copyright (c) 2002-2010 Richard Nelson.  All Rights Reserved.
#####
##### file: ${Starttls}
#####		STARTTLS Configuration for Debian Sendmail
##### generated via: (${interp_pgm} ${interp_vrm})
#####		${main::program_name}
#####		version: ${main::program_version} ${main::program_date}
##### by: ${user}\@${hostname}
##### on: ${current_time}
##### in: ${directory}
##### input files: ${Parse_mc::database_file}
#####
##### Usage:
#####	1) To get *ANY* STARTTLS support for sendmail you
#####		A) *MUST* Add this line to /etc/mail/sendmail.mc 
#####		   \`include(\`/etc/mail/tls/starttls.m4\')dnl\'
#####		B) *MAY* Add the same line to /etc/mail/submit.mc
#####		   to get MSP<->MTA authentication/encryption 
#####	2) You may modify the marked portions of this file, those
#####	   deal with the cert/key filenames and TLS options.
#####	   If you need finer control of TLS options, use the access
#####	   database.
#####
####################################################################
divert(0)dnl
VERSIONID(\`\$Id: starttls.m4,v 8.14.4-8+deb8u2 2017-02-05 23:17:28 cowboy Exp \$\')
dnl #
dnl #---------------------------------------------------------------------
dnl # Bring in Autoconf results
dnl #---------------------------------------------------------------------
ifdef(\`sm_version\', \`dnl\',
\`include(\`/usr/share/sendmail/cf/debian/autoconf.m4\')dnl\')
dnl #
dnl # Check to see if inclusion is valid (version >= 8.11.0, tls enabled)
ifelse(eval(sm_version_math >= 527104), \`1\', \`dnl
ifelse(sm_enable_tls, \`yes\', \`dnl
dnl #
dnl # To support shared keyfiles, we need them to be group readable
dnl #
define(\`confDONT_BLAME_SENDMAIL\',dnl
	defn(\`confDONT_BLAME_SENDMAIL\')\`,GroupReadableKeyFile\')dnl
dnl #
dnl #             ...Do not touch anything above this line...
dnl #
dnl # Set a more reasonable timeout on negotiation
dnl #
define(\`confTO_STARTTLS\',     \`$Def_Map{'confTO_STARTTLS'}\')dnl   # <= EDIT
dnl #
dnl # CA directory - CA certs should be herein
define(\`confCACERT_PATH\',     \`$Def_Map{'confCACERT_PATH'}\')dnl   # <= EDIT
dnl #
dnl # CA file (may be the same as client/server certificate)
define(\`confCACERT\',           \`$Def_Map{'confCACERT'}\')dnl   # <= EDIT
dnl #
dnl # Certificate Revocation List
define(\`confCRL\',              \`$Def_Map{'confCRL'}\')dnl   # <= EDIT
EOT
if (! -f $Def_Map{'confCRL'}) {
print $ofh <<"EOT";
dnl # CRL not found...  do not issue warnings on it!
undefine(\`confCRL\')dnl
EOT
	};
	print $ofh <<"EOT";
dnl #
dnl # Server certificate/key (can be in the same file, and shared w/client)
dnl # NOTE: The key must *NOT* be encrypted !!!
define(\`confSERVER_CERT\',     \`$Def_Map{'confSERVER_CERT'}\')dnl   # <= EDIT
define(\`confSERVER_KEY\',      \`$Def_Map{'confSERVER_KEY'}\')dnl   # <= EDIT
dnl #
dnl # Client certificate/key (can be in the same file, and shared w/server)
dnl # NOTE: The key must *NOT* be encrypted !!!
define(\`confCLIENT_CERT\',     \`$Def_Map{'confCLIENT_CERT'}\')dnl   # <= EDIT
define(\`confCLIENT_KEY\',      \`$Def_Map{'confCLIENT_KEY'}\')dnl   # <= EDIT
dnl #
dnl # DH parameters
define(\`confDH_PARAMETERS\',   \`$Def_Map{'confDH_PARAMETERS'}\')dnl # <= EDIT
dnl #
dnl # Optional settings
define(\`confTLS_SRV_OPTIONS\', \`$Def_Map{'confTLS_SRV_OPTIONS'}\')dnl   # <= EDIT
dnl #
\')\')dnl
EOT
	};