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#!/usr/bin/perl -w
#------------------------------------------------------------------------
#
# $Sendmail: update_auth,v 8.14.4 2019-02-05 18:41:16 cowboy Exp $
#
# Create /etc/mail/sasl/sasl.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 = '2019-02-05 18:41:16 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 $SASL_def = "/etc/mail/sasl/sasl.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 $SASL = $main::opt_output_file || $SASL_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 ${SASL}...\n";
# Read the mc/m4 files
&Parse_mc::read_dbs($Parse_mc::database_file, '');
# Obtain SASL information from database
&get_data;
# Write out the textual representation
&write_sasl;
#
#------------------------------------------------------------------------------
# Obtain information from database
#------------------------------------------------------------------------------
sub get_data {
my @names = (
'confTO_AUTH'
,'TRUST_AUTH_MECH'
,'confAUTH_MECHANISMS'
,'confAUTH_REALM'
);
foreach my $entry (@names) {
my ($class, $flags, $files, $options) =
&Parse_mc::entry_dbs($entry);
my $file = join(' ',@{$files});
$Def_Map{$entry} = '';
$Def_Map{$entry} = $file if ($file ne '-');
#$Def_Map{$entry} = &Parse_mc::format_dbs($entry);
};
};
#
#------------------------------------------------------------------------------
# Create /etc/mail/sasl/sasl.m4
#------------------------------------------------------------------------------
sub write_sasl {
my $ofh = new FileHandle;
$SASL = '&STDOUT' if ($SASL eq '-');
unless ( open($ofh, ">$SASL") ) {
warn("Could not open $SASL($!), using STDOUT.\n");
open($ofh, ">&STDOUT");
};
$SASL = '-' if ($SASL eq '&STDOUT');
&write_m4($ofh);
close $ofh;
if ($SASL eq $SASL_def) {
chown '0', '0', $SASL;
chmod 0744, $SASL;
};
};
#
#------------------------------------------------------------------------------
# Write SASL m4 file
#------------------------------------------------------------------------------
sub write_m4 {
my ($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: ${SASL}
##### AUTH Configuration for Debian Sendmail
##### generated via: (${interp_pgm} ${interp_vrm})
##### ${main::program_name}
##### version: ${main::program_version} ${main::program_date}
##### by: ${user}\@${hostname}
##### on: ${current_time}
##### in: ${directory}
##### input files: ${Parse_mc::database_file}
#####
##### Usage:
##### 1) To get *ANY* AUTH support for sendmail you
##### A) *MUST* Add this line to /etc/mail/sendmail.mc
##### \`include(\`/etc/mail/sasl/sasl.m4\')dnl\'
##### B) *MAY* Add the same line to /etc/mail/submit.mc
##### to get MSP<->MTA authentication/encryption
##### 2) You may modify the marked portions of this file.
##### If you need finer control of AUTH options, use the access
##### database.
#####
####################################################################
divert(0)dnl
VERSIONID(\`\$Id: sasl.m4,v 8.14.4-4.1ubuntu1.1 2019-02-05 18:41:16 cowboy Exp \$\')
dnl #
dnl #---------------------------------------------------------------------
dnl # Bring in Autoconf results
dnl #---------------------------------------------------------------------
ifdef(\`sm_version\', \`dnl\',
\`include(\`/usr/share/sendmail/cf/debian/autoconf.m4\')dnl\')
dnl #
dnl #---------------------------------------------------------------------
dnl # SMTP AUTH (SASL) support (sendmail 8.10.0 +)
dnl # PLAIN/LOGIN needed to support SASL auth via PAM ;(
dnl # if this bothers you, you allow them only in conjunction w/STARTTLS !
dnl #---------------------------------------------------------------------
ifelse(eval(sm_version_math >= 526848), \`1\', \`dnl
ifelse(sm_enable_auth, \`yes\', \`dnl
dnl #
dnl # ...Do not touch anything above this line...
dnl #
dnl # Set a more reasonable timeout on negotiation
dnl #
define(\`confTO_AUTH\', \`$Def_Map{'confTO_AUTH'}\')dnl # <= EDIT
dnl #
dnl # Define the REALM passed to sasl (8.13.0+)
ifelse(eval(sm_version_math >= 527616), \`1\', \`dnl
define(`confAUTH_REALM', \`$Def_Map{'confAUTH_REALM'}\')dnl # <= EDIT
\')dnl
dnl #
dnl # Available Authentication methods
dnl #
define(\`confAUTH_MECHANISMS\',dnl
\`$Def_Map{'confAUTH_MECHANISMS'}\')dnl # <= EDIT
dnl #
dnl # These, we will trust for relaying
dnl #
TRUST_AUTH_MECH(\`$Def_Map{'TRUST_AUTH_MECH'}\')dnl # <= EDIT
dnl #
dnl # ...Do not touch anything below this line...
dnl #
dnl #
dnl # for 8.12.0+, add EXTERNAL as an available & trusted mech (w/STARTTLS)
dnl # and allow sharing of /etc/sasldb(2) file, allow group read/write
dnl #
ifelse(eval(sm_version_math >= 527360), \`1\', \`dnl
define(\`confAUTH_MECHANISMS\',dnl
\`EXTERNAL \'defn(\`confAUTH_MECHANISMS\'))dnl
TRUST_AUTH_MECH(\`EXTERNAL\')
dnl #
dnl # To support some SASL use, we need the DB to be group readable
dnl #
define(\`confDONT_BLAME_SENDMAIL\',dnl
defn(\`confDONT_BLAME_SENDMAIL\')\`,GroupReadableSASLDBFile,GroupWritableSASLDBFile\')dnl
\')dnl
dnl #
dnl # To support SMTP AUTH in \`sendmail -bs\' :
dnl # Sigh: SASLV1 MSP AUTH does not work in -bs mode (/etc/sasldb !o+r)
dnl # so, we have the MSP not use Auth (or ETRN)
dnl # SASLV2 (w/saslauth) chose to prohibit user authentication - it can
dnl # be made to work by:
dnl # 1) changing /etc/sasldb2 {root,sasl,smmta}:smmsp 0660
dnl # 2) dpkg-statoverride --remove /var/run/saslauthd
dnl # 3) dpkg-statoverride --add root sasl 711 /var/run/saslauthd
dnl #
ifelse(eval(sm_auth_lib < 2), \`1\', \`dnl
ifdef(\`DEBIAN_MSP\', \`dnl
ifelse(defn(\`_DPO_\'), \`\', \`dnl
DAEMON_OPTIONS(\`Name=NoMTA, Addr=0.0.0.0, M=EA\')dnl
\')\')\')dnl
dnl #
\')\')dnl
EOT
};