-# Copyright (C) 2015-2020 all contributors <meta@public-inbox.org>
+# Copyright (C) 2015-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
-# contains common daemon code for the httpd, imapd, and nntpd servers.
-# This may be used for read-only IMAP server if we decide to implement it.
+#
+# Contains common daemon code for the httpd, imapd, and nntpd servers
+# and designed for handling thousands of untrusted clients over slow
+# and/or lossy connections.
package PublicInbox::Daemon;
use strict;
use warnings;
use POSIX qw(WNOHANG :signal_h);
use Socket qw(IPPROTO_TCP SOL_SOCKET);
sub SO_ACCEPTFILTER () { 0x1000 }
-use Cwd qw/abs_path/;
STDOUT->autoflush(1);
STDERR->autoflush(1);
use PublicInbox::DS qw(now);
-use PublicInbox::Syscall qw($SFD_NONBLOCK);
+use PublicInbox::Syscall qw(SFD_NONBLOCK);
require PublicInbox::Listener;
use PublicInbox::EOFpipe;
use PublicInbox::Sigfd;
sub daemon_prepare ($) {
my ($default_listen) = @_;
my $listener_names = {}; # sockname => IO::Handle
- $oldset = PublicInbox::Sigfd::block_signals();
+ $oldset = PublicInbox::DS::block_signals();
@CMD = ($0, @ARGV);
my ($prog) = ($CMD[0] =~ m!([^/]+)\z!g);
my $help = <<EOF;
sub daemonize () {
if ($daemonize) {
+ require Cwd;
foreach my $i (0..$#ARGV) {
my $arg = $ARGV[$i];
next unless -e $arg;
- $ARGV[$i] = abs_path($arg);
+ $ARGV[$i] = Cwd::abs_path($arg);
}
check_absolute('stdout', $stdout);
check_absolute('stderr', $stderr);
foreach my $fd (3..$end) {
my $s = IO::Handle->new_from_fd($fd, 'r');
if (my $k = sockname($s)) {
- if ($s->blocking) {
- $s->blocking(0);
- warn <<"";
+ my $prev_was_blocking = $s->blocking(0);
+ warn <<"" if $prev_was_blocking;
Inherited socket (fd=$fd) is blocking, making it non-blocking.
Set 'NonBlocking = true' in the systemd.service unit to avoid stalled
processes when multiple service instances start.
- }
$listener_names->{$k} = $s;
push @rv, $s;
} else {
}
sub kill_workers ($) {
- my ($s) = @_;
-
- while (my ($pid, $id) = each %pids) {
- kill $s, $pid;
- }
+ my ($sig) = @_;
+ kill $sig, keys(%pids);
}
sub upgrade_aborted ($) {
CHLD => \&reap_children,
};
my $sigfd = PublicInbox::Sigfd->new($sig, 0);
- local %SIG = (%SIG, %$sig) if !$sigfd;
- PublicInbox::Sigfd::sig_setmask($oldset) if !$sigfd;
+ local @SIG{keys %$sig} = values(%$sig) unless $sigfd;
+ PublicInbox::DS::sig_setmask($oldset) if !$sigfd;
while (1) { # main loop
my $n = scalar keys %pids;
unless (@listeners) {
}
my $want = $worker_processes - 1;
if ($n <= $want) {
- PublicInbox::Sigfd::block_signals() if !$sigfd;
+ PublicInbox::DS::block_signals() if !$sigfd;
for my $i ($n..$want) {
+ my $seed = rand(0xffffffff);
my $pid = fork;
if (!defined $pid) {
warn "failed to fork worker[$i]: $!\n";
} elsif ($pid == 0) {
+ srand($seed);
+ eval { Net::SSLeay::randomize() };
$set_user->() if $set_user;
return $p0; # run normal work code
} else {
$pids{$pid} = $i;
}
}
- PublicInbox::Sigfd::sig_setmask($oldset) if !$sigfd;
+ PublicInbox::DS::sig_setmask($oldset) if !$sigfd;
}
if ($sigfd) { # Linux and IO::KQueue users:
# this calls epoll_create:
PublicInbox::Listener->new($_, $tls_cb || $post_accept)
} @listeners;
- my $sigfd = PublicInbox::Sigfd->new($sig, $SFD_NONBLOCK);
- local %SIG = (%SIG, %$sig) if !$sigfd;
+ my $sigfd = PublicInbox::Sigfd->new($sig, SFD_NONBLOCK);
+ local @SIG{keys %$sig} = values(%$sig) unless $sigfd;
if (!$sigfd) {
# wake up every second to accept signals if we don't
# have signalfd or IO::KQueue:
- PublicInbox::Sigfd::sig_setmask($oldset);
+ PublicInbox::DS::sig_setmask($oldset);
PublicInbox::DS->SetLoopTimeout(1000);
}
PublicInbox::DS->EventLoop;