Mercurial > hg > nginx-tests
view mail_resolver.t @ 1905:f35824e75b66
Tests: fixed reading QUIC streams on Perl < 5.24.
The parse_stream() routine has had a missing explicit return if there were no
streams received. In Perl < 5.24 this used to return no value, or an empty
array in the list context. In modern Perl this returns an empty value, or an
array of 1 element, which made the check for last index of the returned array
work rather by accident.
The fix is to return explicitly and to check the array size in callers instead.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Tue, 06 Jun 2023 18:50:07 +0400 |
parents | cdcd75657e52 |
children |
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#!/usr/bin/perl # (C) Sergey Kandaurov # (C) Nginx, Inc. # Tests for mail resolver. ############################################################################### use warnings; use strict; use Test::More; 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 mail_ssl smtp http rewrite socket_ssl/) ->has_daemon('openssl')->plan(11) ->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } mail { auth_http http://127.0.0.1:8080/mail/auth; smtp_auth none; server_name locahost; proxy_timeout 15s; # prevent useless resend resolver_timeout 2s; server { listen 127.0.0.1:8025; protocol smtp; resolver 127.0.0.1:%%PORT_8981_UDP%% 127.0.0.1:%%PORT_8982_UDP%% 127.0.0.1:%%PORT_8983_UDP%%; } server { listen 127.0.0.1:8027; protocol smtp; resolver 127.0.0.1:%%PORT_8982_UDP%%; } server { listen 127.0.0.1:8028; protocol smtp; resolver 127.0.0.1:%%PORT_8983_UDP%%; resolver_timeout 1s; } server { listen 127.0.0.1:8029; protocol smtp; resolver 127.0.0.1:%%PORT_8984_UDP%%; } server { listen 127.0.0.1:8030; protocol smtp; resolver 127.0.0.1:%%PORT_8985_UDP%%; } server { listen 127.0.0.1:8031; protocol smtp; resolver 127.0.0.1:%%PORT_8986_UDP%%; resolver_timeout 1s; } server { listen 127.0.0.1:8032; protocol smtp; resolver 127.0.0.1:%%PORT_8987_UDP%%; } server { ssl_certificate_key localhost.key; ssl_certificate localhost.crt; listen 127.0.0.1:8033 ssl; protocol smtp; resolver 127.0.0.1:%%PORT_8983_UDP%%; } } http { %%TEST_GLOBALS_HTTP%% server { listen 127.0.0.1:8080; server_name localhost; location = /mail/auth { set $reply $http_client_host; if ($http_client_host !~ UNAVAIL) { set $reply OK; } add_header Auth-Status $reply; add_header Auth-Server 127.0.0.1; add_header Auth-Port %%PORT_8026%%; return 204; } } } 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_daemon(\&Test::Nginx::SMTP::smtp_test_daemon); $t->run_daemon(\&dns_daemon, port($_), $t) foreach (8981 .. 8987); $t->run(); $t->waitforsocket('127.0.0.1:' . port(8026)); $t->waitforfile($t->testdir . '/' . port($_)) foreach (8981 .. 8987); ############################################################################### # PTR my $s = Test::Nginx::SMTP->new(); my $s2 = Test::Nginx::SMTP->new(); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->ok('PTR'); $s->send('QUIT'); $s->read(); $s2->read(); $s2->send('EHLO example.com'); $s2->ok('PTR waiting'); # Cached PTR prevents from querying bad ns on port 8983 $s = Test::Nginx::SMTP->new(); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->ok('PTR cached'); $s->send('QUIT'); $s->read(); # SERVFAIL $s = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8027)); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->check(qr/TEMPUNAVAIL/, 'PTR SERVFAIL'); $s->send('QUIT'); $s->read(); # PTR with zero length RDATA $s = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8028)); $s2 = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8028)); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->check(qr/TEMPUNAVAIL/, 'PTR empty'); $s->send('QUIT'); $s->read(); # resolver timeout is set $s2->read(); $s2->send('EHLO example.com'); $s2->ok('PTR empty waiting'); # CNAME TODO: { local $TODO = 'support for CNAME RR'; $s = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8029)); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->ok('CNAME'); $s->send('QUIT'); $s->read(); } # uncompressed answer $s = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8030)); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->ok('uncompressed PTR'); $s->send('QUIT'); $s->read(); $s = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8031)); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->check(qr/TEMPUNAVAIL/, 'PTR type'); $s->send('QUIT'); $s->read(); # CNAME and PTR in one answer section $s = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8032)); $s->read(); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->ok('CNAME with PTR'); $s->send('QUIT'); $s->read(); # before 1.17.3, read event while in resolving resulted in duplicate resolving my %ssl = ( SSL => 1, SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_NONE(), SSL_error_trap => sub { die $_[1] }, ); $s = Test::Nginx::SMTP->new(PeerAddr => '127.0.0.1:' . port(8033), %ssl); $s->send('EHLO example.com'); $s->read(); $s->send('MAIL FROM:<test@example.com> SIZE=100'); $s->read(); $s->read(); $s->send('RCPT TO:<test@example.com>'); $s->check(qr/TEMPUNAVAIL/, 'PTR SSL empty'); $s->send('QUIT'); $s->read(); ############################################################################### sub reply_handler { my ($recv_data, $port) = @_; my (@name, @rdata); use constant NOERROR => 0; use constant SERVFAIL => 2; use constant NXDOMAIN => 3; use constant A => 1; use constant CNAME => 5; use constant PTR => 12; use constant DNAME => 39; use constant IN => 1; # default values my ($hdr, $rcode, $ttl) = (0x8180, NOERROR, 3600); # decode name my ($len, $offset) = (undef, 12); while (1) { $len = unpack("\@$offset C", $recv_data); last if $len == 0; $offset++; push @name, unpack("\@$offset A$len", $recv_data); $offset += $len; } $offset -= 1; my ($id, $type, $class) = unpack("n x$offset n2", $recv_data); my $name = join('.', @name); if ($name eq 'a.example.net' && $type == A) { push @rdata, rd_addr($ttl, '127.0.0.1'); } elsif ($name eq '1.0.0.127.in-addr.arpa' && $type == PTR) { if ($port == port(8981)) { push @rdata, rd_name(PTR, $ttl, 'a.example.net'); } elsif ($port == port(8982)) { $rcode = SERVFAIL; } elsif ($port == port(8983)) { # zero length RDATA push @rdata, pack("n3N n", 0xc00c, PTR, IN, $ttl, 0); } elsif ($port == port(8984)) { # PTR answered with CNAME push @rdata, rd_name(CNAME, $ttl, '1.1.0.0.127.in-addr.arpa'); } elsif ($port == port(8985)) { # uncompressed answer push @rdata, pack("(C/a*)6x n2N n(C/a*)3x", ('1', '0', '0', '127', 'in-addr', 'arpa'), PTR, IN, $ttl, 15, ('a', 'example', 'net')); } elsif ($port == port(8986)) { push @rdata, rd_name(DNAME, $ttl, 'a.example.net'); } elsif ($port == port(8987)) { # PTR answered with CNAME+PTR push @rdata, rd_name(CNAME, $ttl, '1.1.0.0.127.in-addr.arpa'); push @rdata, pack("n3N n(C/a*)3 x", 0xc034, PTR, IN, $ttl, 15, ('a', 'example', 'net')); } } elsif ($name eq '1.1.0.0.127.in-addr.arpa' && $type == PTR) { push @rdata, rd_name(PTR, $ttl, 'a.example.net'); } $len = @name; pack("n6 (C/a*)$len x n2", $id, $hdr | $rcode, 1, scalar @rdata, 0, 0, @name, $type, $class) . join('', @rdata); } sub rd_name { my ($type, $ttl, $name) = @_; my ($rdlen, @rdname); @rdname = split /\./, $name; $rdlen = length(join '', @rdname) + @rdname + 1; pack("n3N n(C/a*)* x", 0xc00c, $type, IN, $ttl, $rdlen, @rdname); } sub rd_addr { my ($ttl, $addr) = @_; my $code = 'split(/\./, $addr)'; # use a special pack string to not zero pad return pack 'n3N', 0xc00c, A, IN, $ttl if $addr eq ''; pack 'n3N nC4', 0xc00c, A, IN, $ttl, eval "scalar $code", eval($code); } sub dns_daemon { my ($port, $t) = @_; my ($data, $recv_data); my $socket = IO::Socket::INET->new( LocalAddr => '127.0.0.1', LocalPort => $port, Proto => 'udp', ) or die "Can't create listening socket: $!\n"; # signal we are ready open my $fh, '>', $t->testdir() . '/' . $port; close $fh; while (1) { $socket->recv($recv_data, 65536); $data = reply_handler($recv_data, $port); $socket->send($data); } } ###############################################################################