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# The client writes a message to Sys::Syslog native method.
# The syslogd writes it into a file and through a pipe.
# The syslogd passes it via TCP to the loghost.
# The server receives the message on its TCP socket.
# Find the message in client, file, pipe, syslogd, server log.
# Check that a SIGHUP reconnects the TCP stream and closes the socket.
use strict;
use warnings;
use Socket;
our %args = (
client => {
func => sub { write_between2logs(shift, sub {
my $self = shift;
${$self->{server}}->loggrep("Signal", 8)
or die ref($self), " no 'Signal' between logs";
})},
loggrep => { get_between2loggrep() },
},
syslogd => {
fstat => {
# sighup must not leak a TCP socket
qr/internet stream tcp/ => 1,
},
ktrace => {
qr/syslogd PSIG SIGHUP caught handler/ => 1,
qr/syslogd RET execve 0/ => 1,
},
loghost => '@tcp://127.0.0.1:$connectport',
loggrep => {
qr/config file changed: dying/ => 0,
qr/config file modified: restarting/ => 0,
qr/syslogd: restarted/ => 1,
get_between2loggrep(),
},
},
server => {
listen => { domain => AF_INET, addr => "127.0.0.1", proto => "tcp" },
redo => 0,
func => sub { read_between2logs(shift, sub {
my $self = shift;
if ($self->{redo}) {
$self->{redo}--;
return;
}
${$self->{syslogd}}->rotate();
${$self->{syslogd}}->kill_syslogd('HUP');
${$self->{syslogd}}->loggrep("syslogd: restarted", 5)
or die ref($self), " no 'syslogd: restarted' between logs";
print STDERR "Signal\n";
# regenerate fstat file
${$self->{syslogd}}->fstat();
$self->{redo}++;
})},
loggrep => {
get_between2loggrep(),
qr/Signal/ => 1,
qr/Accepted/ => 2,
},
},
);
1;
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