Mercurial > hg > nginx-tests
view stream_ssl_preread.t @ 1571:1b4ceab9cb1c
Tests: fixed ssl_certificate.t with LibreSSL client.
Net::SSLeay::connect() that manages TLS handshake could return unexpected
error when receiving server alert, as seen in server certificate tests if
it could not been selected. Typically, it returns the expected error -1,
but with certain libssl implementations it can be 0, as explained below.
The error is propagated from libssl's SSL_connect(), which is usually -1.
In modern OpenSSL versions, it is the default error code used in the state
machine returned when something went wrong with parsing TLS message header.
In versions up to OpenSSL 1.0.2, with SSLv23_method() used by default, -1
is the only error code in the ssl_connect() method implementation which is
used as well if receiving alert while parsing ServerHello. BoringSSL also
seems to return -1. But it is not so with LibreSSL that returns zero.
Previously, tests failed with client built with LibreSSL with SSLv3 removed.
Here, the error is propagated directly from ssl_read_bytes() method, which
is always implemented as ssl3_read_bytes() in all TLS methods. It could be
also seen with OpenSSL up to 1.0.2 with non-default methods explicitly set.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Fri, 29 May 2020 23:10:20 +0300 |
parents | dbce8fb5f5f8 |
children | f3ba4c74de31 |
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#!/usr/bin/perl # (C) Sergey Kandaurov # (C) Nginx, Inc. # Tests for stream_ssl_preread module. ############################################################################### use warnings; use strict; use Test::More; BEGIN { use FindBin; chdir($FindBin::Bin); } use lib 'lib'; use Test::Nginx; use Test::Nginx::Stream qw/ stream /; ############################################################################### select STDERR; $| = 1; select STDOUT; $| = 1; my $t = Test::Nginx->new()->has(qw/stream stream_map stream_ssl_preread/) ->has(qw/stream_ssl stream_return/)->has_daemon('openssl') ->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } stream { log_format status $status; map $ssl_preread_server_name $name { "" 127.0.0.1:8093; default $ssl_preread_server_name; } upstream foo { server 127.0.0.1:8091; } upstream bar { server 127.0.0.1:8092; } upstream next { server 127.0.0.1:8094; server 127.0.0.1:8080; } ssl_preread on; server { listen 127.0.0.1:8080; return $name; } server { listen 127.0.0.1:8081; proxy_pass $name; } server { listen 127.0.0.1:8082; proxy_pass $name; ssl_preread off; } server { listen 127.0.0.1:8083; proxy_pass $name; preread_timeout 2s; preread_buffer_size 42; access_log %%TESTDIR%%/status.log status; } server { listen 127.0.0.1:8084; proxy_pass next; proxy_connect_timeout 2s; preread_buffer_size 8; } ssl_certificate_key localhost.key; ssl_certificate localhost.crt; server { listen 127.0.0.1:8091 ssl; listen 127.0.0.1:8092 ssl; listen 127.0.0.1:8093 ssl; ssl_preread off; return $server_port; } } EOF eval { require IO::Socket::SSL; die if $IO::Socket::SSL::VERSION < 1.56; }; plan(skip_all => 'IO::Socket::SSL version >= 1.56 required') if $@; eval { if (IO::Socket::SSL->can('can_client_sni')) { IO::Socket::SSL->can_client_sni() or die; } }; plan(skip_all => 'IO::Socket::SSL with OpenSSL SNI support required') if $@; eval { my $ctx = Net::SSLeay::CTX_new() or die; my $ssl = Net::SSLeay::new($ctx) or die; Net::SSLeay::set_tlsext_host_name($ssl, 'example.org') == 1 or die; }; plan(skip_all => 'Net::SSLeay with OpenSSL SNI support required') if $@; $t->plan(13); $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"; } $t->run(); ############################################################################### my ($p1, $p2, $p3, $p4) = (port(8091), port(8092), port(8093), port(8084)); is(get_ssl('foo', 8081), $p1, 'sni'); is(get_ssl('foo', 8081), $p1, 'sni again'); is(get_ssl('bar', 8081), $p2, 'sni 2'); is(get_ssl('bar', 8081), $p2, 'sni 2 again'); # fallback to an empty value for some reason is(get_ssl('', 8081), $p3, 'no sni'); is(get_ssl('foo', 8082), $p3, 'preread off'); is(get_ssl('foo', 8083), undef, 'preread buffer full'); is(stream('127.0.0.1:' . port(8080))->io('x' x 1000), "127.0.0.1:$p3", 'not a handshake'); # ticket #1317 is(stream("127.0.0.1:$p4")->io('x' x 16), "127.0.0.1:$p3", 'pending buffers on next upstream'); # no junk in variable due to short ClientHello length value is(get_short(), "127.0.0.1:$p3", 'short client hello'); # allow record with older SSL version, such as 3.0 is(get_oldver(), 'foo', 'older version in ssl record'); # SNI "foo|f" fragmented across TLS records is(get_frag(), 'foof', 'handshake fragment split on SNI'); $t->stop(); is($t->read_file('status.log'), "400\n", 'preread buffer full - log'); ############################################################################### sub get_frag { my $r = pack("N*", 0x16030100, 0x3b010000, 0x380303ac, 0x8c8678a0, 0xaa1e7eed, 0x3644eed6, 0xc3bd2c69, 0x7bc7deda, 0x249db0e3, 0x0c339eba, 0xa80b7600, 0x00020000, 0x0100000d, 0x00000009, 0x00070000, 0x04666f6f, 0x16030100); $r .= pack("n", 0x0166); http($r); } sub get_short { my $r = pack("N*", 0x16030100, 0x38010000, 0x330303eb); $r .= pack("N*", 0x6357cdba, 0xa6b8d853, 0xf1f6ac0f); $r .= pack("N*", 0xdf03178c, 0x0ae41824, 0xe7643682); $r .= pack("N*", 0x3c1b273f, 0xbfde4b00, 0x00000000); $r .= pack("CN3", 0x0c, 0x00000008, 0x00060000, 0x03666f6f); http($r); } sub get_oldver { my $r = pack("N*", 0x16030000, 0x38010000, 0x340303eb); $r .= pack("N*", 0x6357cdba, 0xa6b8d853, 0xf1f6ac0f); $r .= pack("N*", 0xdf03178c, 0x0ae41824, 0xe7643682); $r .= pack("N*", 0x3c1b273f, 0xbfde4b00, 0x00000000); $r .= pack("CN3", 0x0c, 0x00000008, 0x00060000, 0x03666f6f); http($r); } sub get_ssl { my ($host, $port) = @_; my $s = stream('127.0.0.1:' . port($port)); eval { local $SIG{ALRM} = sub { die "timeout\n" }; local $SIG{PIPE} = sub { die "sigpipe\n" }; alarm(8); IO::Socket::SSL->start_SSL($s->{_socket}, SSL_hostname => $host, SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_NONE(), SSL_error_trap => sub { die $_[1] } ); alarm(0); }; alarm(0); if ($@) { log_in("died: $@"); return undef; } return $s->read(); } ###############################################################################