nntpd: support systemd FD inheritance + signals

Avoid depending on IO::Socket::INET if we can help it,
we do not need to bloat ourselves with lot of that
functionality.

1 files changed, 106 insertions, 0 deletions

diff --git a/t/nntpd.t b/t/nntpd.t
new file mode 100644
index 00000000..527cfc2c
--- /dev/null
+++ b/t/nntpd.t
@@ -0,0 +1,106 @@
+# Copyright (C) 2015 all contributors <meta@public-inbox.org>
+# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+use strict;
+use warnings;
+use Test::More;
+eval { require PublicInbox::SearchIdx };
+plan skip_all => "Xapian missing for nntpd" if $@;
+eval { require PublicInbox::Msgmap };
+plan skip_all => "DBD::SQLite missing for nntpd" if $@;
+use Cwd;
+use Email::Simple;
+use IO::Socket;
+use Fcntl qw(FD_CLOEXEC F_SETFD F_GETFD);
+use Socket qw(SO_KEEPALIVE IPPROTO_TCP TCP_NODELAY);
+use File::Temp qw/tempdir/;
+use Net::NNTP;
+use IPC::Run qw(run);
+use Data::Dumper;
+
+my $tmpdir = tempdir(CLEANUP => 1);
+my $home = "$tmpdir/pi-home";
+my $err = "$tmpdir/stderr.log";
+my $out = "$tmpdir/stdout.log";
+my $pi_home = "$home/.public-inbox";
+my $pi_config = "$pi_home/config";
+my $maindir = "$tmpdir/main.git";
+my $main_bin = getcwd()."/t/main-bin";
+my $main_path = "$main_bin:$ENV{PATH}"; # for spamc ham mock
+my $group = 'test-nntpd';
+my $addr = $group . '@example.com';
+my $cfgpfx = "publicinbox.$group";
+my $failbox = "$home/fail.mbox";
+local $ENV{PI_EMERGENCY} = $failbox;
+my $mda = 'blib/script/public-inbox-mda';
+my $nntpd = 'blib/script/public-inbox-nntpd';
+my $init = 'blib/script/public-inbox-init';
+my $index = 'blib/script/public-inbox-index';
+
+my %opts = (
+        LocalAddr => '127.0.0.1',
+        ReuseAddr => 1,
+        Proto => 'tcp',
+        Type => SOCK_STREAM,
+        Listen => 1024,
+);
+my $sock = IO::Socket::INET->new(%opts);
+plan skip_all => 'sock fd!=3, cannot test nntpd integration' if fileno($sock) != 3;
+my $pid;
+END { kill 'TERM', $pid if defined $pid };
+{
+        local $ENV{HOME} = $home;
+        system($init, $group, $maindir, 'http://example.com/', $addr);
+
+        # ensure successful message delivery
+        {
+                local $ENV{ORIGINAL_RECIPIENT} = $addr;
+                my $simple = Email::Simple->new(<<EOF);
+From: Me <me\@example.com>
+To: You <you\@example.com>
+Cc: $addr
+Message-Id: <nntp\@example.com>
+Subject: hihi
+Date: Thu, 01 Jan 1970 00:00:00 +0000
+
+nntp
+EOF
+                my $in = $simple->as_string;
+                local $ENV{PATH} = $main_path;
+                IPC::Run::run([$mda], \$in);
+                is(0, $?, 'ran MDA correctly');
+                is(0, system($index, $maindir), 'indexed git dir');
+        }
+
+        ok($sock, 'sock created');
+        $! = 0;
+        my $fl = fcntl($sock, F_GETFD, 0);
+        ok(! $!, 'no error from fcntl(F_GETFD)');
+        is($fl, FD_CLOEXEC, 'cloexec set by default (Perl behavior)');
+        $pid = fork;
+        if ($pid == 0) {
+                # pretend to be systemd
+                fcntl($sock, F_SETFD, $fl &= ~FD_CLOEXEC);
+                $ENV{LISTEN_PID} = $$;
+                $ENV{LISTEN_FDS} = 1;
+                exec $nntpd, "--stdout=$out", "--stderr=$err";
+                die "FAIL: $!\n";
+        }
+        ok(defined $pid, 'forked nntpd process successfully');
+        $! = 0;
+        ok(! $!, 'no error from fcntl(F_SETFD)');
+        fcntl($sock, F_SETFD, $fl |= FD_CLOEXEC);
+        my $n = Net::NNTP->new($sock->sockhost . ':' . $sock->sockport);
+        my $list = $n->list;
+        is_deeply($list, { $group => [ qw(1 1 n) ] }, 'LIST works');
+        is_deeply([$n->group($group)], [ qw(0 1 1), $group ], 'GROUP works');
+
+        # TODO: upgrades and such
+
+        ok(kill('TERM', $pid), 'killed nntpd');
+        $pid = undef;
+        waitpid(-1, 0);
+}
+
+done_testing();
+
+1;