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# $OpenBSD: RSyslogd.pm,v 1.7 2019/09/10 22:35:07 bluhm Exp $
# Copyright (c) 2010-2014 Alexander Bluhm <bluhm@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
package RSyslogd;
use parent 'Proc';
use Carp;
use Cwd;
sub new {
my $class = shift;
my %args = @_;
$args{logfile} ||= "rsyslogd.log";
$args{up} ||= "calling (select|poll)";
$args{down} ||= "Clean shutdown completed";
$args{func} = sub { Carp::confess "$class func may not be called" };
$args{conffile} ||= "rsyslogd.conf";
$args{pidfile} ||= "rsyslogd.pid";
$args{outfile} ||= "rsyslogd.out";
my $self = Proc::new($class, %args);
_make_abspath(\$self->{$_}) foreach (qw(conffile pidfile outfile));
my ($listendomain, $listenproto, $listenaddr, $listenport);
if (defined($self->{listendomain})) {
$listendomain = $self->{listendomain}
or croak "$class listen domain not given";
$listenproto = $self->{listenproto}
or croak "$class listen protocol not given";
$listenaddr = $self->{listenaddr}
or croak "$class listen address not given";
$listenport = $self->{listenport}
or croak "$class listen port not given";
}
my ($connectdomain, $connectproto, $connectaddr, $connectport);
if (defined($self->{connectdomain})) {
$connectdomain = $self->{connectdomain}
or croak "$class connect domain not given";
$connectproto = $self->{connectproto}
or croak "$class connect protocol not given";
$connectaddr = $self->{connectaddr}
or croak "$class connect address not given";
$connectport = $self->{connectport}
or croak "$class connect port not given";
}
open(my $fh, '>', $self->{conffile})
or die ref($self), " create conf file $self->{conffile} failed: $!";
if ($listendomain && $listenproto eq "udp") {
print $fh "\$ModLoad imudp\n";
print $fh "\$UDPServerRun $listenport\n";
}
if ($listendomain && $listenproto eq "tcp") {
print $fh "\$ModLoad imtcp\n";
print $fh "\$InputTCPServerRun $listenport\n";
}
if ($listendomain && $listenproto eq "tls") {
print $fh "\$DefaultNetstreamDriver gtls\n";
my %cert = (
CA => "ca.crt",
Cert => "server.crt",
Key => "server.key",
);
while(my ($k, $v) = each %cert) {
_make_abspath(\$v);
print $fh "\$DefaultNetstreamDriver${k}File $v\n";
}
print $fh "\$ModLoad imtcp\n";
print $fh "\$InputTCPServerStreamDriverMode 1\n";
print $fh "\$InputTCPServerStreamDriverAuthMode anon\n";
print $fh "\$InputTCPServerRun $listenport\n";
}
if ($connectdomain && $connectproto eq "udp") {
print $fh "*.*\t\@$connectaddr:$connectport\n";
}
if ($connectdomain && $connectproto eq "tcp") {
print $fh "*.*\t\@\@$connectaddr:$connectport\n";
}
if ($connectdomain && $connectproto eq "tls") {
print $fh "\$DefaultNetstreamDriver gtls\n";
my %cert = (
CA => "127.0.0.1.crt",
);
while(my ($k, $v) = each %cert) {
_make_abspath(\$v);
print $fh "\$DefaultNetstreamDriver${k}File $v\n";
}
print $fh "\$ActionSendStreamDriverAuthMode x509/name\n";
print $fh "\$ActionSendStreamDriverPermittedPeer 127.0.0.1\n";
print $fh "\$ActionSendStreamDriverMode 1\n";
print $fh "*.*\t\@\@$connectaddr:$connectport\n";
}
print $fh "*.*\t$self->{outfile}\n";
print $fh $self->{conf} if $self->{conf};
close $fh;
unlink($self->{outfile});
return $self;
}
sub child {
my $self = shift;
my @sudo = $ENV{SUDO} ? $ENV{SUDO} : "env";
my @pkill = (@sudo, "pkill", "-KILL", "-x", "rsyslogd");
my @pgrep = ("pgrep", "-x", "rsyslogd");
system(@pkill) && $? != 256
and die ref($self), " system '@pkill' failed: $?";
while ($? == 0) {
print STDERR "rsyslogd still running\n";
system(@pgrep) && $? != 256
and die ref($self), " system '@pgrep' failed: $?";
}
print STDERR "rsyslogd not running\n";
my @cmd = ("rsyslogd", "-dn", "-f", $self->{conffile},
"-i", $self->{pidfile});
print STDERR "execute: @cmd\n";
exec @cmd;
die ref($self), " exec '@cmd' failed: $!";
}
sub _make_abspath {
my $file = ref($_[0]) ? ${$_[0]} : $_[0];
if (substr($file, 0, 1) ne "/") {
$file = getcwd(). "/". $file;
${$_[0]} = $file if ref($_[0]);
}
return $file;
}
sub down {
my $self = shift;
$self->kill();
return Proc::down($self);
}
1;
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