view mail_smtp_xclient.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 a8b8dd6e8ae1
children 74986ebee2fd
line wrap: on
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#!/usr/bin/perl

# (C) Maxim Dounin

###############################################################################

use warnings;
use strict;

use Test::More;

use MIME::Base64;

BEGIN { use FindBin; chdir($FindBin::Bin); }

use lib 'lib';
use Test::Nginx;
use Test::Nginx::SMTP;

###############################################################################

select STDERR; $| = 1;
select STDOUT; $| = 1;

local $SIG{PIPE} = 'IGNORE';

my $t = Test::Nginx->new()->has(qw/mail smtp http rewrite/)->plan(6)
	->write_file_expand('nginx.conf', <<'EOF');

%%TEST_GLOBALS%%

daemon off;

events {
}

mail {
    proxy_pass_error_message  on;
    auth_http  http://127.0.0.1:8080/mail/auth;
    xclient    on;

    server {
        listen     127.0.0.1:8025;
        protocol   smtp;
        smtp_auth  login plain none;
    }
}

http {
    %%TEST_GLOBALS_HTTP%%

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        location = /mail/auth {
            add_header Auth-Status OK;
            add_header Auth-Server 127.0.0.1;
            add_header Auth-Port   %%PORT_8026%%;
            add_header Auth-Wait   1;
            return 204;
        }
    }
}

EOF

$t->run_daemon(\&Test::Nginx::SMTP::smtp_test_daemon);
$t->run()->waitforsocket('127.0.0.1:' . port(8026));

###############################################################################

# When XCLIENT's HELO= argument isn't used, the  following combinations may be
# send to backend with xclient on:
#
# xclient
# xclient, helo
# xclient, ehlo
# xclient, from, rcpt
# xclient, helo, from, rcpt
# xclient, ehlo, from, rcpt
#
# Test them in order.

# xclient

my $s = Test::Nginx::SMTP->new();
$s->read();
$s->send('AUTH PLAIN ' . encode_base64("\0test\@example.com\0secret", ''));
$s->authok('xclient');

# xclient, helo

$s = Test::Nginx::SMTP->new();
$s->read();
$s->send('HELO example.com');
$s->read();
$s->send('AUTH PLAIN ' . encode_base64("\0test\@example.com\0secret", ''));
$s->authok('xclient, helo');

# xclient, ehlo

$s = Test::Nginx::SMTP->new();
$s->read();
$s->send('EHLO example.com');
$s->read();
$s->send('AUTH PLAIN ' . encode_base64("\0test\@example.com\0secret", ''));
$s->authok('xclient, ehlo');

# xclient, from, rcpt

$s = Test::Nginx::SMTP->new();
$s->read();
$s->send('MAIL FROM:<test@example.com>');
$s->read();
$s->send('RCPT TO:<test@example.com>');
$s->ok('xclient, from');

# xclient, helo, from, rcpt

$s = Test::Nginx::SMTP->new();
$s->read();
$s->send('HELO example.com');
$s->read();
$s->send('MAIL FROM:<test@example.com>');
$s->read();
$s->send('RCPT TO:<test@example.com>');
$s->ok('xclient, helo, from');

# xclient, ehlo, from, rcpt

$s = Test::Nginx::SMTP->new();
$s->read();
$s->send('EHLO example.com');
$s->read();
$s->send('MAIL FROM:<test@example.com>');
$s->read();
$s->send('RCPT TO:<test@example.com>');
$s->ok('xclient, ehlo, from');

###############################################################################