[PATCH] Tests: ssl session ticket key rotation tests

[Sergey Kandaurov]

# HG changeset patch
# User Sergey Kandaurov <pluknet at nginx.com>
# Date 1671070326 -14400
#      Thu Dec 15 06:12:06 2022 +0400
# Node ID 82dc9c3a4ec81636e42e1417ce6661f3b0e4d358
# Parent  ff6c99824947575d4a8d3c9aeea8d6b68e0ace29
Tests: ssl session ticket key rotation tests.

diff --git a/ssl_session_ticket_key.t b/ssl_session_ticket_key.t
new file mode 100644
--- /dev/null
+++ b/ssl_session_ticket_key.t
@@ -0,0 +1,141 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Tests for rotation of SSL session ticket keys.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+eval {
+	require Net::SSLeay; die if $Net::SSLeay::VERSION < 1.86;
+	Net::SSLeay::load_error_strings();
+	Net::SSLeay::SSLeay_add_ssl_algorithms();
+	Net::SSLeay::randomize();
+};
+plan(skip_all => 'Net::SSLeay version => 1.86 required') if $@;
+
+my $t = Test::Nginx->new()->has(qw/http http_ssl/)->has_daemon('openssl')
+	->plan(2)->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+worker_processes 2;
+
+events {
+}
+
+http {
+    %%TEST_GLOBALS_HTTP%%
+
+    ssl_certificate_key localhost.key;
+    ssl_certificate localhost.crt;
+
+    server {
+        listen       127.0.0.1:8080 ssl;
+        server_name  localhost;
+
+        ssl_session_cache shared:SSL:1m;
+        ssl_session_timeout 2;
+    }
+}
+
+EOF
+
+$t->write_file('openssl.conf', <<EOF);
+[ req ]
+default_bits = 2048
+encrypt_key = no
+distinguished_name = req_distinguished_name
+[ req_distinguished_name ]
+EOF
+
+my $d = $t->testdir();
+
+foreach my $name ('localhost') {
+	system('openssl req -x509 -new '
+		. "-config $d/openssl.conf -subj /CN=$name/ "
+		. "-out $d/$name.crt -keyout $d/$name.key "
+		. ">>$d/openssl.out 2>&1") == 0
+		or die "Can't create certificate for $name: $!\n";
+}
+
+$t->run();
+
+###############################################################################
+
+# any test can fail depending on which worker process served connection,
+# with a single worker process it is only the 2nd test that fails
+local $TODO = 'not yet' unless $t->has_version('1.23.2');
+
+my $ses = get_ssl_session();
+my $key = get_ticket_key_name($ses);
+
+sleep 1;
+
+$ses = get_ssl_session($ses);
+is(get_ticket_key_name($ses), $key, 'ticket key match');
+
+sleep 2;
+
+$ses = get_ssl_session($ses);
+isnt(get_ticket_key_name($ses), $key, 'ticket key next');
+
+###############################################################################
+
+sub get_ticket_key_name {
+	my ($ses) = @_;
+	my $asn = Net::SSLeay::i2d_SSL_SESSION($ses);
+	my $any = qr/[\x00-\xff]/;
+next:
+	# tag(10) | len{2} | OCTETSTRING(4) | len{2} | ticket(key_name|..)
+	$asn =~ /\xaa\x81($any)\x04\x81($any)($any{16})/g;
+	return if !defined $3;
+	goto next if unpack("C", $1) - unpack("C", $2) != 3;
+	unpack "H*", $3;
+}
+
+sub get_ssl_session {
+	my ($ses) = @_;
+
+	my ($s, $ssl) = get_ssl_socket(ses => $ses);
+
+	Net::SSLeay::write($ssl, <<EOF);
+GET / HTTP/1.0
+Host: localhost
+
+EOF
+	Net::SSLeay::read($ssl);
+
+	Net::SSLeay::get_session($ssl);
+}
+
+sub get_ssl_socket {
+	my (%extra) = @_;
+
+	my $s = IO::Socket::INET->new('127.0.0.1:' . port(8080));
+	my $ctx = Net::SSLeay::CTX_new() or die("Failed to create SSL_CTX $!");
+	my $ssl = Net::SSLeay::new($ctx) or die("Failed to create SSL $!");
+	Net::SSLeay::set_session($ssl, $extra{ses}) if $extra{ses};
+	Net::SSLeay::set_fd($ssl, fileno($s));
+	Net::SSLeay::connect($ssl) or die("ssl connect");
+	return ($s, $ssl);
+}
+
+###############################################################################