Mercurial > hg > nginx-tests
view mail_resolver.t @ 1215:26884729e06b
Tests: cope with resolver resend in mail resolver tests.
Currently, if resolver didn't find PTR type in the answer section of PTR
response, it keeps the node in the resend queue until the next timer event.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Thu, 31 Aug 2017 19:09:04 +0300 |
parents | 65fc7a0ca418 |
children | e4974af3fb12 |
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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 smtp http rewrite/)->plan(8) ->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; # prevent useless resend resolver_timeout 2s; server { listen 127.0.0.1:8025; protocol smtp; resolver 127.0.0.1:%%PORT_8081_UDP%% 127.0.0.1:%%PORT_8082_UDP%% 127.0.0.1:%%PORT_8083_UDP%%; } server { listen 127.0.0.1:8027; protocol smtp; resolver 127.0.0.1:%%PORT_8082_UDP%%; } server { listen 127.0.0.1:8028; protocol smtp; resolver 127.0.0.1:%%PORT_8083_UDP%%; resolver_timeout 1s; } server { listen 127.0.0.1:8029; protocol smtp; resolver 127.0.0.1:%%PORT_8084_UDP%%; } server { listen 127.0.0.1:8030; protocol smtp; resolver 127.0.0.1:%%PORT_8085_UDP%%; } server { listen 127.0.0.1:8031; protocol smtp; resolver 127.0.0.1:%%PORT_8086_UDP%%; resolver_timeout 1s; } server { listen 127.0.0.1:8032; protocol smtp; resolver 127.0.0.1:%%PORT_8087_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->run_daemon(\&Test::Nginx::SMTP::smtp_test_daemon); $t->run_daemon(\&dns_daemon, port($_), $t) foreach (8081 .. 8087); $t->run(); $t->waitforsocket('127.0.0.1:' . port(8026)); $t->waitforfile($t->testdir . '/' . port($_)) foreach (8081 .. 8087); ############################################################################### # PTR my $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'); $s->send('QUIT'); $s->read(); # Cached PTR prevents from querying bad ns on port 8083 $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)); $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(); # 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'); $s->read(); ############################################################################### sub reply_handler { my ($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(8081)) { push @rdata, rd_name(PTR, $ttl, 'a.example.net'); } elsif ($port == port(8082)) { $rcode = SERVFAIL; } elsif ($port == port(8083)) { # zero length RDATA push @rdata, pack("n3N n", 0xc00c, PTR, IN, $ttl, 0); } elsif ($port == port(8084)) { # PTR answered with CNAME push @rdata, rd_name(CNAME, $ttl, '1.1.0.0.127.in-addr.arpa'); } elsif ($port == port(8085)) { # 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(8086)) { push @rdata, rd_name(DNAME, $ttl, 'a.example.net'); } elsif ($port == port(8087)) { # 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); } } ###############################################################################