--- /dev/null
+# Copyright (C) 2015 all contributors <meta@public-inbox.org>
+# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+package PublicInbox::Daemon; # empty class :p
+
+# contains common daemon code for the nntpd server.
+# This may be used for read-only IMAP server if we decide to implement it.
+package main;
+use strict;
+use warnings;
+use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
+require Danga::Socket;
+require POSIX;
+require PublicInbox::Listener;
+my @CMD;
+my $set_user;
+my (@cfg_listen, $stdout, $stderr, $group, $user, $pid_file, $daemonize);
+my $worker_processes = 0;
+my @listeners;
+my %pids;
+my %listener_names;
+my $reexec_pid;
+my $cleanup;
+END { $cleanup->() if $cleanup };
+
+sub daemon_prepare ($) {
+ my ($default_listen) = @_;
+ @CMD = ($0, @ARGV);
+ $SIG{HUP} = $SIG{USR1} = $SIG{USR2} = $SIG{PIPE} =
+ $SIG{TTIN} = $SIG{TTOU} = $SIG{WINCH} = 'IGNORE';
+ my %opts = (
+ 'l|listen=s' => \@cfg_listen,
+ '1|stdout=s' => \$stdout,
+ '2|stderr=s' => \$stderr,
+ 'W|worker-processes=i' => \$worker_processes,
+ 'P|pid-file=s' => \$pid_file,
+ 'u|user=s' => \$user,
+ 'g|group=s' => \$group,
+ 'D|daemonize' => \$daemonize,
+ );
+ GetOptions(%opts) or die "bad command-line args\n";
+
+ if (defined $pid_file && $pid_file =~ /\.oldbin\z/) {
+ die "--pid-file cannot end with '.oldbin'\n";
+ }
+ @listeners = inherit();
+ # ignore daemonize when inheriting
+ $daemonize = undef if scalar @listeners;
+
+ push @cfg_listen, $default_listen unless (@listeners || @cfg_listen);
+
+ foreach my $l (@cfg_listen) {
+ next if $listener_names{$l}; # already inherited
+ require IO::Socket::INET6; # works for IPv4, too
+ my %o = (
+ LocalAddr => $l,
+ ReuseAddr => 1,
+ Proto => 'tcp',
+ );
+ if (my $s = IO::Socket::INET6->new(%o)) {
+ $listener_names{sockname($s)} = $s;
+ push @listeners, $s;
+ } else {
+ warn "error binding $l: $!\n";
+ }
+ }
+ die 'No listeners bound' unless @listeners;
+}
+
+sub daemonize () {
+ chdir '/' or die "chdir failed: $!\n";
+ open(STDIN, '+<', '/dev/null') or die "redirect stdin failed: $!\n";
+
+ return unless (defined $pid_file || defined $group || defined $user
+ || $daemonize);
+
+ require Net::Server::Daemonize;
+
+ Net::Server::Daemonize::check_pid_file($pid_file) if defined $pid_file;
+ my $uid = Net::Server::Daemonize::get_uid($user) if defined $user;
+ my $gid;
+ if (defined $group) {
+ $gid = Net::Server::Daemonize::get_gid($group);
+ $gid = (split /\s+/, $gid)[0];
+ } elsif (defined $uid) {
+ $gid = (getpwuid($uid))[3];
+ }
+
+ # We change users in the worker to ensure upgradability,
+ # The upgrade will create the ".oldbin" pid file in the
+ # same directory as the given pid file.
+ $uid and $set_user = sub {
+ Net::Server::Daemonize::set_user($uid, $gid);
+ };
+
+ if ($daemonize) {
+ my ($pid, $err) = do_fork();
+ die "could not fork: $err\n" unless defined $pid;
+ exit if $pid;
+
+ open STDOUT, '>&STDIN' or die "redirect stdout failed: $!\n";
+ open STDERR, '>&STDIN' or die "redirect stderr failed: $!\n";
+ POSIX::setsid();
+ ($pid, $err) = do_fork();
+ die "could not fork: $err\n" unless defined $pid;
+ exit if $pid;
+ }
+ if (defined $pid_file) {
+ Net::Server::Daemonize::create_pid_file($pid_file);
+ if ($uid and !chown($uid, $gid, $pid_file)) {
+ warn "could not chown $pid_file: $!\n";
+ }
+ my $unlink_pid = $$;
+ $cleanup = sub {
+ unlink_pid_file_safe_ish($unlink_pid, $pid_file);
+ };
+ }
+}
+
+sub worker_quit () {
+ # killing again terminates immediately:
+ exit unless @listeners;
+
+ @listeners = ();
+
+ # give slow clients 30s to finish reading/writing whatever
+ Danga::Socket->AddTimer(30, sub { exit });
+
+ # drop idle connections and try to quit gracefully
+ Danga::Socket->SetPostLoopCallback(sub {
+ my ($dmap, undef) = @_;
+ my $n = 0;
+
+ foreach my $s (values %$dmap) {
+ if ($s->can('busy') && $s->busy) {
+ $n = 1;
+ } else {
+ # close as much as possible, early as possible
+ $s->close;
+ }
+ }
+ $n; # true: loop continues, false: loop breaks
+ });
+}
+
+sub reopen_logs {
+ if ($stdout) {
+ open STDOUT, '>>', $stdout or
+ warn "failed to redirect stdout to $stdout: $!\n";
+ }
+ if ($stderr) {
+ open STDERR, '>>', $stderr or
+ warn "failed to redirect stderr to $stderr: $!\n";
+ }
+}
+
+sub sockname ($) {
+ my ($s) = @_;
+ my $n = getsockname($s) or return;
+ my ($port, $addr);
+ if (length($n) >= 28) {
+ require Socket6;
+ ($port, $addr) = Socket6::unpack_sockaddr_in6($n);
+ } else {
+ ($port, $addr) = Socket::sockaddr_in($n);
+ }
+ if (length($addr) == 4) {
+ $n = Socket::inet_ntoa($addr)
+ } else {
+ $n = '['.Socket6::inet_ntop(Socket6::AF_INET6(), $addr).']';
+ }
+ $n .= ":$port";
+}
+
+sub inherit () {
+ return () if ($ENV{LISTEN_PID} || 0) != $$;
+ my $fds = $ENV{LISTEN_FDS} or return ();
+ my $end = $fds + 2; # LISTEN_FDS_START - 1
+ my @rv = ();
+ foreach my $fd (3..$end) {
+ my $s = IO::Handle->new;
+ $s->fdopen($fd, 'r');
+ if (my $k = sockname($s)) {
+ $listener_names{$k} = $s;
+ push @rv, $s;
+ } else {
+ warn "failed to inherit fd=$fd (LISTEN_FDS=$fds)";
+ }
+ }
+ @rv
+}
+
+sub upgrade () {
+ if ($reexec_pid) {
+ warn "upgrade in-progress: $reexec_pid\n";
+ return;
+ }
+ if (defined $pid_file) {
+ if ($pid_file =~ /\.oldbin\z/) {
+ warn "BUG: .oldbin suffix exists: $pid_file\n";
+ return;
+ }
+ unlink_pid_file_safe_ish($$, $pid_file);
+ $pid_file .= '.oldbin';
+ Net::Server::Daemonize::create_pid_file($pid_file);
+ }
+ my ($pid, $err) = do_fork();
+ unless (defined $pid) {
+ warn "fork failed: $err\n";
+ return;
+ }
+ if ($pid == 0) {
+ use Fcntl qw(FD_CLOEXEC F_SETFD F_GETFD);
+ $ENV{LISTEN_FDS} = scalar @listeners;
+ $ENV{LISTEN_PID} = $$;
+ foreach my $s (@listeners) {
+ my $fl = fcntl($s, F_GETFD, 0);
+ fcntl($s, F_SETFD, $fl &= ~FD_CLOEXEC);
+ }
+ exec @CMD;
+ die "Failed to exec: $!\n";
+ }
+ $reexec_pid = $pid;
+}
+
+sub kill_workers ($) {
+ my ($s) = @_;
+
+ while (my ($pid, $id) = each %pids) {
+ kill $s, $pid;
+ }
+}
+
+sub do_fork () {
+ my $new = POSIX::SigSet->new;
+ $new->fillset;
+ my $old = POSIX::SigSet->new;
+ POSIX::sigprocmask(&POSIX::SIG_BLOCK, $new, $old) or
+ die "SIG_BLOCK: $!\n";
+ my $pid = fork;
+ my $err = $!;
+ POSIX::sigprocmask(&POSIX::SIG_SETMASK, $old) or
+ die "SIG_SETMASK: $!\n";
+ ($pid, $err);
+}
+
+sub upgrade_aborted ($) {
+ my ($p) = @_;
+ warn "reexec PID($p) died with: $?\n";
+ $reexec_pid = undef;
+ return unless $pid_file;
+
+ my $file = $pid_file;
+ $file =~ s/\.oldbin\z// or die "BUG: no '.oldbin' suffix in $file\n";
+ unlink_pid_file_safe_ish($$, $pid_file);
+ $pid_file = $file;
+ eval { Net::Server::Daemonize::create_pid_file($pid_file) };
+ warn $@, "\n" if $@;
+}
+
+sub reap_children () {
+ while (1) {
+ my $p = waitpid(-1, &POSIX::WNOHANG) or return;
+ if (defined $reexec_pid && $p == $reexec_pid) {
+ upgrade_aborted($p);
+ } elsif (defined(my $id = delete $pids{$p})) {
+ warn "worker[$id] PID($p) died with: $?\n";
+ } elsif ($p > 0) {
+ warn "unknown PID($p) reaped: $?\n";
+ } else {
+ return;
+ }
+ }
+}
+
+sub unlink_pid_file_safe_ish ($$) {
+ my ($unlink_pid, $file) = @_;
+ return unless defined $unlink_pid && $unlink_pid == $$;
+
+ open my $fh, '<', $file or return;
+ defined(my $read_pid = <$fh>) or return;
+ chomp $read_pid;
+ if ($read_pid == $unlink_pid) {
+ Net::Server::Daemonize::unlink_pid_file($file);
+ }
+}
+
+sub master_loop ($) {
+ my ($refresh) = @_;
+ pipe(my ($p0, $p1)) or die "failed to create parent-pipe: $!\n";
+ my %pwatch = ( fileno($p0) => sub { kill('TERM', $$) } );
+ pipe(my ($r, $w)) or die "failed to create self-pipe: $!\n";
+ IO::Handle::blocking($w, 0);
+ my $set_workers = $worker_processes;
+ my @caught;
+ my $master_pid = $$;
+ foreach my $s (qw(HUP CHLD QUIT INT TERM USR1 USR2 TTIN TTOU WINCH)) {
+ $SIG{$s} = sub {
+ return if $$ != $master_pid;
+ push @caught, $s;
+ syswrite($w, '.');
+ };
+ }
+ reopen_logs();
+ # main loop
+ while (1) {
+ while (my $s = shift @caught) {
+ if ($s eq 'USR1') {
+ reopen_logs();
+ kill_workers($s);
+ } elsif ($s eq 'USR2') {
+ upgrade();
+ } elsif ($s =~ /\A(?:QUIT|TERM|INT)\z/) {
+ # drops pipes and causes children to die
+ exit
+ } elsif ($s eq 'WINCH') {
+ $worker_processes = 0;
+ } elsif ($s eq 'HUP') {
+ $worker_processes = $set_workers;
+ $refresh->();
+ kill_workers($s);
+ } elsif ($s eq 'TTIN') {
+ if ($set_workers > $worker_processes) {
+ ++$worker_processes;
+ } else {
+ $worker_processes = ++$set_workers;
+ }
+ } elsif ($s eq 'TTOU') {
+ if ($set_workers > 0) {
+ $worker_processes = --$set_workers;
+ }
+ } elsif ($s eq 'CHLD') {
+ reap_children();
+ }
+ }
+
+ my $n = scalar keys %pids;
+ if ($n > $worker_processes) {
+ while (my ($k, $v) = each %pids) {
+ kill('TERM', $k) if $v >= $worker_processes;
+ }
+ $n = $worker_processes;
+ }
+ foreach my $i ($n..($worker_processes - 1)) {
+ my ($pid, $err) = do_fork();
+ if (!defined $pid) {
+ warn "failed to fork worker[$i]: $err\n";
+ } elsif ($pid == 0) {
+ $set_user->() if $set_user;
+ close($_) for ($w, $r, $p1);
+ Danga::Socket->AddOtherFds(%pwatch);
+ return; # run normal work code
+ } else {
+ warn "PID=$pid is worker[$i]\n";
+ $pids{$pid} = $i;
+ }
+ }
+ # just wait on signal events here:
+ sysread($r, my $buf, 8);
+ }
+ exit # never gets here, just for documentation
+}
+
+sub daemon_loop ($$) {
+ my ($refresh, $post_accept) = @_;
+ $refresh->(); # load config before forking to save work
+ if ($worker_processes > 0) {
+ master_loop($refresh); # returns if in child process
+ } else {
+ $set_user->() if $set_user;
+ $SIG{USR2} = sub { worker_quit() if upgrade() };
+ }
+ reopen_logs();
+ $SIG{QUIT} = $SIG{INT} = $SIG{TERM} = *worker_quit;
+ $SIG{USR1} = *reopen_logs;
+ $SIG{HUP} = $refresh;
+ # this calls epoll_create:
+ PublicInbox::Listener->new($_, $post_accept) for @listeners;
+ Danga::Socket->EventLoop;
+}
+
+
+sub daemon_run ($$$) {
+ my ($default, $refresh, $post_accept) = @_;
+ daemon_prepare($default);
+ daemon_loop($refresh, $post_accept);
+}
+
+1;
--- /dev/null
+# Copyright (C) 2015 all contributors <meta@public-inbox.org>
+# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+package PublicInbox::Listener;
+use strict;
+use warnings;
+use base 'Danga::Socket';
+use Socket qw(SOL_SOCKET SO_KEEPALIVE IPPROTO_TCP TCP_NODELAY);
+use fields qw(post_accept);
+require IO::Handle;
+
+sub new ($$$) {
+ my ($class, $s, $cb) = @_;
+ setsockopt($s, SOL_SOCKET, SO_KEEPALIVE, 1);
+ setsockopt($s, IPPROTO_TCP, TCP_NODELAY, 1);
+ listen($s, 1024);
+ IO::Handle::blocking($s, 0);
+ my $self = fields::new($class);
+ $self->SUPER::new($s); # calls epoll_create for the first socket
+ $self->watch_read(1);
+ $self->{post_accept} = $cb;
+ $self
+}
+
+sub event_read {
+ my ($self) = @_;
+ # no loop here, we want to fairly distribute clients
+ # between multiple processes sharing the same socket
+ if (accept(my $c, $self->{sock})) {
+ IO::Handle::blocking($c, 0); # no accept4 :<
+ $self->{post_accept}->($c);
+ }
+}
+
+1;
# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
use strict;
use warnings;
-my @CMD = ($0, @ARGV);
-require Danga::Socket;
-require IO::Handle;
-use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
+require PublicInbox::Daemon;
require PublicInbox::NewsGroup;
-my $set_user;
+require PublicInbox::NNTP;
my $nntpd = PublicInbox::NNTPD->new;
-my $refresh = sub { $nntpd->refresh_groups };
-$SIG{HUP} = $SIG{USR1} = $SIG{USR2} = $SIG{PIPE} =
- $SIG{TTIN} = $SIG{TTOU} = $SIG{WINCH} = 'IGNORE';
-
-$refresh->();
-my (@cfg_listen, $stdout, $stderr, $group, $user, $pid_file, $daemonize);
-my $worker_processes = 0;
-my %opts = (
- 'l|listen=s' => \@cfg_listen,
- '1|stdout=s' => \$stdout,
- '2|stderr=s' => \$stderr,
- 'W|worker-processes=i' => \$worker_processes,
- 'P|pid-file=s' => \$pid_file,
- 'u|user=s' => \$user,
- 'g|group=s' => \$group,
- 'D|daemonize' => \$daemonize,
-);
-GetOptions(%opts) or die "bad command-line args\n";
-
-if (defined $pid_file && $pid_file =~ /\.oldbin\z/) {
- die "--pid-file cannot end with '.oldbin'\n";
-}
-
-my %pids;
-my %listener_names;
-my $reexec_pid;
-my @listeners = inherit();
-
-# ignore daemonize when inheriting
-$daemonize = undef if scalar @listeners;
-
-# default NNTP listener if no listeners
-push @cfg_listen, '0.0.0.0:119' unless (@listeners || @cfg_listen);
-
-foreach my $l (@cfg_listen) {
- next if $listener_names{$l}; # already inherited
- require IO::Socket::INET6; # works for IPv4, too
- my %o = (
- LocalAddr => $l,
- ReuseAddr => 1,
- Proto => 'tcp',
- );
- if (my $s = IO::Socket::INET6->new(%o)) {
- $listener_names{sockname($s)} = $s;
- push @listeners, $s;
- } else {
- warn "error binding $l: $!\n";
- }
-}
-die 'No listeners bound' unless @listeners;
-
-chdir '/' or die "chdir failed: $!\n";
-open(STDIN, '+<', '/dev/null') or die "redirect stdin failed: $!\n";
-
-if (defined $pid_file || defined $group || defined $user || $daemonize) {
- require Net::Server::Daemonize;
-
- Net::Server::Daemonize::check_pid_file($pid_file) if defined $pid_file;
- my $uid = Net::Server::Daemonize::get_uid($user) if defined $user;
- my $gid;
- if (defined $group) {
- $gid = Net::Server::Daemonize::get_gid($group);
- $gid = (split /\s+/, $gid)[0];
- } elsif (defined $uid) {
- $gid = (getpwuid($uid))[3];
- }
-
- # We change users in the worker to ensure upgradability,
- # The upgrade will create the ".oldbin" pid file in the
- # same directory as the given pid file.
- $uid and $set_user = sub {
- Net::Server::Daemonize::set_user($uid, $gid);
- };
-
- if ($daemonize) {
- my ($pid, $err) = do_fork();
- die "could not fork: $err\n" unless defined $pid;
- exit if $pid;
-
- open STDOUT, '>&STDIN' or die "redirect stdout failed: $!\n";
- open STDERR, '>&STDIN' or die "redirect stderr failed: $!\n";
- POSIX::setsid();
- ($pid, $err) = do_fork();
- die "could not fork: $err\n" unless defined $pid;
- exit if $pid;
- }
- if (defined $pid_file) {
- my $unlink_pid = $$;
- Net::Server::Daemonize::create_pid_file($pid_file);
- if ($uid and !chown($uid, $gid, $pid_file)) {
- warn "could not chown $pid_file: $!\n";
- }
- END { unlink_pid_file_safe_ish($unlink_pid, $pid_file) };
- }
-}
-
-if ($worker_processes > 0) {
- pipe(my ($p0, $p1)) or die "failed to create parent-pipe: $!\n";
- my %pwatch = ( fileno($p0) => sub { kill('TERM', $$) } );
- pipe(my ($r, $w)) or die "failed to create self-pipe: $!\n";
- IO::Handle::blocking($w, 0);
- my $set_workers = $worker_processes;
- my @caught;
- my $master_pid = $$;
- foreach my $s (qw(HUP CHLD QUIT INT TERM USR1 USR2 TTIN TTOU WINCH)) {
- $SIG{$s} = sub {
- return if $$ != $master_pid;
- push @caught, $s;
- syswrite($w, '.');
- };
- }
- reopen_logs();
- # main loop
- while (1) {
- while (my $s = shift @caught) {
- if ($s eq 'USR1') {
- reopen_logs();
- kill_workers($s);
- } elsif ($s eq 'USR2') {
- upgrade();
- } elsif ($s =~ /\A(?:QUIT|TERM|INT)\z/) {
- # drops pipes and causes children to die
- exit
- } elsif ($s eq 'WINCH') {
- $worker_processes = 0;
- } elsif ($s eq 'HUP') {
- $worker_processes = $set_workers;
- $refresh->();
- kill_workers($s);
- } elsif ($s eq 'TTIN') {
- if ($set_workers > $worker_processes) {
- ++$worker_processes;
- } else {
- $worker_processes = ++$set_workers;
- }
- } elsif ($s eq 'TTOU') {
- if ($set_workers > 0) {
- $worker_processes = --$set_workers;
- }
- } elsif ($s eq 'CHLD') {
- reap_children();
- }
- }
-
- my $n = scalar keys %pids;
- if ($n > $worker_processes) {
- while (my ($k, $v) = each %pids) {
- kill('TERM', $k) if $v >= $worker_processes;
- }
- $n = $worker_processes;
- }
- foreach my $i ($n..($worker_processes - 1)) {
- my ($pid, $err) = do_fork();
- if (!defined $pid) {
- warn "failed to fork worker[$i]: $err\n";
- } elsif ($pid == 0) {
- $set_user->() if $set_user;
- close($_) for ($w, $r, $p1);
- Danga::Socket->AddOtherFds(%pwatch);
- goto worker;
- } else {
- warn "PID=$pid is worker[$i]\n";
- $pids{$pid} = $i;
- }
- }
- sysread($r, my $buf, 8);
- }
-} else {
- $set_user->() if $set_user;
- $SIG{USR2} = sub { worker_quit() if upgrade() };
-worker:
- # this calls epoll_create:
- reopen_logs();
- $SIG{QUIT} = $SIG{INT} = $SIG{TERM} = *worker_quit;
- $SIG{USR1} = *reopen_logs;
- $SIG{HUP} = $refresh;
- PublicInbox::Listener->new($_) for @listeners;
- Danga::Socket->EventLoop;
-}
-
-# end of main
-
-sub worker_quit {
- # killing again terminates immediately:
- exit unless @listeners;
-
- @listeners = ();
-
- # give slow clients 30s to finish reading/writing whatever
- Danga::Socket->AddTimer(30, sub { exit });
-
- # drop idle connections and try to quit gracefully
- Danga::Socket->SetPostLoopCallback(sub {
- my ($dmap, undef) = @_;
- my $n = 0;
-
- foreach my $s (values %$dmap) {
- if ($s->can('busy') && $s->busy) {
- ++$n;
- } else {
- $s->close;
- }
- }
- $n; # true: loop continues, false: loop breaks
- });
-}
-
-sub reopen_logs {
- if ($stdout) {
- open STDOUT, '>>', $stdout or
- warn "failed to redirect stdout to $stdout: $!\n";
- }
- if ($stderr) {
- open STDERR, '>>', $stderr or
- warn "failed to redirect stderr to $stderr: $!\n";
- }
-}
-
-sub sockname {
- my ($s) = @_;
- my $n = getsockname($s) or return;
- my ($port, $addr);
- if (length($n) >= 28) {
- require Socket6;
- ($port, $addr) = Socket6::unpack_sockaddr_in6($n);
- } else {
- ($port, $addr) = Socket::sockaddr_in($n);
- }
- if (length($addr) == 4) {
- $n = Socket::inet_ntoa($addr)
- } else {
- $n = '['.Socket6::inet_ntop(Socket6::AF_INET6(), $addr).']';
- }
- $n .= ":$port";
-}
-
-sub inherit {
- return () if ($ENV{LISTEN_PID} || 0) != $$;
- my $fds = $ENV{LISTEN_FDS} or return ();
- my $end = $fds + 2; # LISTEN_FDS_START - 1
- my @rv = ();
- foreach my $fd (3..$end) {
- my $s = IO::Handle->new;
- $s->fdopen($fd, 'r');
- if (my $k = sockname($s)) {
- $listener_names{$k} = $s;
- push @rv, $s;
- } else {
- warn "failed to inherit fd=$fd (LISTEN_FDS=$fds)";
- }
- }
- @rv
-}
-
-sub upgrade {
- if ($reexec_pid) {
- warn "upgrade in-progress: $reexec_pid\n";
- return;
- }
- if (defined $pid_file) {
- if ($pid_file =~ /\.oldbin\z/) {
- warn "BUG: .oldbin suffix exists: $pid_file\n";
- return;
- }
- unlink_pid_file_safe_ish($$, $pid_file);
- $pid_file .= '.oldbin';
- Net::Server::Daemonize::create_pid_file($pid_file);
- }
- my ($pid, $err) = do_fork();
- unless (defined $pid) {
- warn "fork failed: $err\n";
- return;
- }
- if ($pid == 0) {
- use Fcntl qw(FD_CLOEXEC F_SETFD F_GETFD);
- $ENV{LISTEN_FDS} = scalar @listeners;
- $ENV{LISTEN_PID} = $$;
- foreach my $s (@listeners) {
- my $fl = fcntl($s, F_GETFD, 0);
- fcntl($s, F_SETFD, $fl &= ~FD_CLOEXEC);
- }
- exec @CMD;
- die "Failed to exec: $!\n";
- }
- $reexec_pid = $pid;
-}
-
-sub kill_workers {
- my ($s) = @_;
-
- while (my ($pid, $id) = each %pids) {
- kill $s, $pid;
- }
-}
-
-sub do_fork {
- require POSIX;
- my $new = POSIX::SigSet->new;
- $new->fillset;
- my $old = POSIX::SigSet->new;
- POSIX::sigprocmask(&POSIX::SIG_BLOCK, $new, $old) or
- die "SIG_BLOCK: $!\n";
- my $pid = fork;
- my $err = $!;
- POSIX::sigprocmask(&POSIX::SIG_SETMASK, $old) or
- die "SIG_SETMASK: $!\n";
- ($pid, $err);
-}
-
-sub upgrade_aborted ($) {
- my ($p) = @_;
- warn "reexec PID($p) died with: $?\n";
- $reexec_pid = undef;
- return unless $pid_file;
-
- my $file = $pid_file;
- $file =~ s/\.oldbin\z// or die "BUG: no '.oldbin' suffix in $file\n";
- unlink_pid_file_safe_ish($$, $pid_file);
- $pid_file = $file;
- eval { Net::Server::Daemonize::create_pid_file($pid_file) };
- warn $@, "\n" if $@;
-}
-
-sub reap_children {
- while (1) {
- my $p = waitpid(-1, &POSIX::WNOHANG) or return;
- if (defined $reexec_pid && $p == $reexec_pid) {
- upgrade_aborted($p);
- } elsif (defined(my $id = delete $pids{$p})) {
- warn "worker[$id] PID($p) died with: $?\n";
- } elsif ($p > 0) {
- warn "unknown PID($p) reaped: $?\n";
- } else {
- return;
- }
- }
-}
-
-sub unlink_pid_file_safe_ish ($$) {
- my ($unlink_pid, $file) = @_;
- return unless defined $unlink_pid && $unlink_pid == $$;
-
- open my $fh, '<', $file or return;
- defined(my $read_pid = <$fh>) or return;
- chomp $read_pid;
- if ($read_pid == $unlink_pid) {
- Net::Server::Daemonize::unlink_pid_file($file);
- }
-}
-
-1;
-package PublicInbox::Listener;
-use strict;
-use warnings;
-use base 'Danga::Socket';
-use Socket qw(SOL_SOCKET SO_KEEPALIVE IPPROTO_TCP TCP_NODELAY);
-use PublicInbox::NNTP;
-
-sub new ($$) {
- my ($class, $s) = @_;
- setsockopt($s, SOL_SOCKET, SO_KEEPALIVE, 1);
- setsockopt($s, IPPROTO_TCP, TCP_NODELAY, 1);
- listen($s, 1024);
- IO::Handle::blocking($s, 0);
- my $self = fields::new($class);
- $self->SUPER::new($s); # calls epoll_create for the first socket
- $self->watch_read(1);
- $self
-}
-
-sub event_read {
- my ($self) = @_;
- # no loop here, we want to fairly distribute clients
- # between multiple processes sharing the same socket
- if (accept(my $c, $self->{sock})) {
- IO::Handle::blocking($c, 0); # no accept4 :<
- PublicInbox::NNTP->new($c, $nntpd);
- }
-}
+daemon_run('0.0.0.0:119',
+ sub { $nntpd->refresh_groups },
+ sub ($) { PublicInbox::NNTP->new($_[0], $nntpd) });
1;
package PublicInbox::NNTPD;
$self;
}
-sub refresh_groups {
+sub refresh_groups () {
my ($self) = @_;
require PublicInbox::Config;
my $pi_config = PublicInbox::Config->new;