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#!/usr/bin/perl
#
# Copyright (C) 2004, 2007 Internet Systems Consortium, Inc. ("ISC")
# Copyright (C) 2000, 2001 Internet Software Consortium.
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#
# Dynamic update test suite.
#
# Usage:
#
# perl update_test.pl [-s server] [-p port] zone
#
# The server defaults to 127.0.0.1.
# The port defaults to 53.
#
# The "Special NS rules" tests will only work correctly if the
# zone has no NS records to begin with, or alternatively has a
# single NS record pointing at the name "ns1" (relative to
# the zone name).
#
# Installation notes:
#
# This program uses the Net::DNS::Resolver module.
# You can install it by saying
#
# perl -MCPAN -e "install Net::DNS"
#
# $Id: update_test.pl,v 1.10 2007/06/19 23:47:04 tbox Exp $
#
use Getopt::Std;
use Net::DNS;
use Net::DNS::Update;
use Net::DNS::Resolver;
$opt_s = "127.0.0.1";
$opt_p = 53;
getopt('s:p:');
$res = new Net::DNS::Resolver;
$res->nameservers($opt_s);
$res->port($opt_p);
$res->defnames(0); # Do not append default domain.
@ARGV == 1 or die
"usage: perl update_test.pl [-s server] [-p port] zone\n";
$zone = shift @ARGV;
my $failures = 0;
sub assert {
my ($cond, $explanation) = @_;
if (!$cond) {
print "I:Test Failed: $explanation ***\n";
$failures++
}
}
sub test {
my ($expected, @records) = @_;
my $update = new Net::DNS::Update("$zone");
foreach $rec (@records) {
$update->push(@$rec);
}
$reply = $res->send($update);
# Did it work?
if (defined $reply) {
my $rcode = $reply->header->rcode;
assert($rcode eq $expected, "expected $expected, got $rcode");
} else {
print "I:Update failed: ", $res->errorstring, "\n";
}
}
sub section {
my ($msg) = @_;
print "I:$msg\n";
}
section("Delete any leftovers from previous tests");
test("NOERROR", ["update", rr_del("a.$zone")]);
test("NOERROR", ["update", rr_del("b.$zone")]);
test("NOERROR", ["update", rr_del("c.$zone")]);
test("NOERROR", ["update", rr_del("d.$zone")]);
test("NOERROR", ["update", rr_del("e.$zone")]);
test("NOERROR", ["update", rr_del("f.$zone")]);
test("NOERROR", ["update", rr_del("ns.s.$zone")]);
test("NOERROR", ["update", rr_del("s.$zone")]);
test("NOERROR", ["update", rr_del("t.$zone")]);
test("NOERROR", ["update", rr_del("*.$zone")]);
test("NOERROR", ["update", rr_del("u.$zone")]);
test("NOERROR", ["update", rr_del("a.u.$zone")]);
test("NOERROR", ["update", rr_del("b.u.$zone")]);
section("Simple prerequisites in the absence of data");
# Name is in Use
test("NXDOMAIN", ["pre", yxdomain("a.$zone")]);
# RRset exists (value independent)
test("NXRRSET", ["pre", yxrrset("a.$zone A")]);
# Name is not in use
test("NOERROR", ["pre", nxdomain("a.$zone")]);
# RRset does not exist
test("NOERROR", ["pre", nxrrset("a.$zone A")]);
# RRset exists (value dependent)
test("NXRRSET", ["pre", yxrrset("a.$zone 300 A 73.80.65.49")]);
section ("Simple creation of data");
test("NOERROR", ["update", rr_add("a.$zone 300 A 73.80.65.49")]);
section ("Simple prerequisites in the presence of data");
# Name is in use
test("NOERROR", ["pre", yxdomain("a.$zone")]);
# RRset exists (value independent)
test("NOERROR", ["pre", yxrrset("a.$zone A")]);
# Name is not in use
test("YXDOMAIN", ["pre", nxdomain("a.$zone")]);
# RRset does not exist
test("YXRRSET", ["pre", nxrrset("a.$zone A")]);
# RRset exists (value dependent)
test("NOERROR", ["pre", yxrrset("a.$zone 300 A 73.80.65.49")]);
#
# Merging of RRsets
#
test("NOERROR", ["update", rr_add("a.$zone 300 A 73.80.65.50")]);
section("Detailed tests of \"RRset exists (value dependent)\" prerequisites");
test("NOERROR", ["pre",
yxrrset("a.$zone 300 A 73.80.65.49"),
yxrrset("a.$zone 300 A 73.80.65.50")]);
test("NOERROR", ["pre",
yxrrset("a.$zone 300 A 73.80.65.50"),
yxrrset("a.$zone 300 A 73.80.65.49")]);
test("NXRRSET", ["pre", yxrrset("a.$zone 300 A 73.80.65.49")]);
test("NXRRSET", ["pre", yxrrset("a.$zone 300 A 73.80.65.50")]);
test("NXRRSET", ["pre",
yxrrset("a.$zone 300 A 73.80.65.49"),
yxrrset("a.$zone 300 A 73.80.65.50"),
yxrrset("a.$zone 300 A 73.80.65.51")]);
section("Torture test of \"RRset exists (value dependent)\" prerequisites.");
test("NOERROR", ["update",
rr_add("e.$zone 300 A 73.80.65.49"),
rr_add("e.$zone 300 TXT 'one'"),
rr_add("e.$zone 300 A 73.80.65.50")]);
test("NOERROR", ["update",
rr_add("e.$zone 300 A 73.80.65.52"),
rr_add("f.$zone 300 A 73.80.65.52"),
rr_add("e.$zone 300 A 73.80.65.51")]);
test("NOERROR", ["update",
rr_add("e.$zone 300 TXT 'three'"),
rr_add("e.$zone 300 TXT 'two'")]);
test("NOERROR", ["update",
rr_add("e.$zone 300 MX 10 mail.$zone")]);
test("NOERROR", ["pre",
yxrrset("e.$zone 300 A 73.80.65.52"),
yxrrset("e.$zone 300 TXT 'two'"),
yxrrset("e.$zone 300 A 73.80.65.51"),
yxrrset("e.$zone 300 TXT 'three'"),
yxrrset("e.$zone 300 A 73.80.65.50"),
yxrrset("f.$zone 300 A 73.80.65.52"),
yxrrset("e.$zone 300 A 73.80.65.49"),
yxrrset("e.$zone 300 TXT 'one'")]);
section("Subtraction of RRsets");
test("NOERROR", ["update", rr_del("a.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["pre",
yxrrset("a.$zone 300 A 73.80.65.50")]);
test("NOERROR", ["update", rr_del("a.$zone 300 A 73.80.65.50")]);
test("NOERROR", ["pre", nxrrset("a.$zone 300 A")]);
test("NOERROR", ["pre", nxdomain("a.$zone")]);
section("Other forms of deletion");
test("NOERROR", ["update", rr_add("a.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["update", rr_add("a.$zone 300 A 73.80.65.50")]);
test("NOERROR", ["update", rr_add("a.$zone 300 MX 10 mail.$zone")]);
test("NOERROR", ["update", rr_del("a.$zone 300 A")]);
test("NOERROR", ["pre", nxrrset("a.$zone 300 A")]);
test("NOERROR", ["update", rr_add("a.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["update", rr_add("a.$zone 300 A 73.80.65.50")]);
test("NOERROR", ["update", rr_del("a.$zone")]);
test("NOERROR", ["pre", nxdomain("a.$zone")]);
section("Case insensitivity");
test("NOERROR", ["update", rr_add("a.$zone 300 PTR foo.net.")]);
test("NOERROR", ["pre", yxrrset("A.$zone 300 PTR fOo.NeT.")]);
section("Special CNAME rules");
test("NOERROR", ["update", rr_add("b.$zone 300 CNAME foo.net.")]);
test("NOERROR", ["update", rr_add("b.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["pre", yxrrset("b.$zone 300 CNAME foo.net.")]);
test("NOERROR", ["pre", nxrrset("b.$zone A")]);
test("NOERROR", ["update", rr_add("c.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["update", rr_add("c.$zone 300 CNAME foo.net.")]);
test("NOERROR", ["pre", yxrrset("c.$zone A")]);
test("NOERROR", ["pre", nxrrset("c.$zone CNAME")]);
# XXX should test with SIG, KEY, NXT, too.
#
# Currently commented out because Net::DNS does not properly
# support WKS records.
#
#section("Special WKS rules");
#test("NOERROR", ["update", rr_add("c.$zone 300 WKS 73.80.65.49 TCP telnet ftp")]);
#test("NOERROR", ["update", rr_add("c.$zone 300 WKS 73.80.65.49 UDP telnet ftp")]);
#test("NOERROR", ["update", rr_add("c.$zone 300 WKS 73.80.65.50 TCP telnet ftp")]);
#test("NOERROR", ["update", rr_add("c.$zone 300 WKS 73.80.65.49 TCP smtp")]);
#test("NOERROR", ["pre",
# yxrrset("c.$zone 300 WKS 73.80.65.49 TCP smtp"),
# yxrrset("c.$zone 300 WKS 73.80.65.49 UDP telnet ftp"),
# yxrrset("c.$zone 300 WKS 73.80.65.50 TCP telnet ftp")]);
section("Special NS rules");
# Deleting the last NS record using "Delete an RR from an RRset"
# should fail at the zone apex and work elsewhere. The pseudocode
# in RFC2136 says it should fail everywhere, but this is in conflict
# with the actual text.
# Apex
test("NOERROR", ["update",
rr_add("$zone 300 NS ns1.$zone"),
rr_add("$zone 300 NS ns2.$zone")]);
test("NOERROR", ["update", rr_del("$zone 300 NS ns1.$zone")]);
test("NOERROR", ["update", rr_del("$zone 300 NS ns2.$zone")]);
test("NOERROR", ["pre",
yxrrset("$zone 300 NS ns2.$zone")]);
# Non-apex
test("NOERROR", ["update", rr_add("n.$zone 300 NS ns1.$zone")]);
test("NOERROR", ["update", rr_del("n.$zone 300 NS ns1.$zone")]);
test("NOERROR", ["pre", nxrrset("n.$zone 300 NS")]);
# Other ways of deleting NS records should also fail at the apex
# and work elsewhere.
# Non-apex
test("NOERROR", ["update", rr_add("n.$zone 300 NS ns1.$zone")]);
test("NOERROR", ["update", rr_del("n.$zone 300 NS")]);
test("NOERROR", ["pre", nxrrset("n.$zone 300 NS")]);
test("NOERROR", ["update", rr_add("n.$zone 300 NS ns1.$zone")]);
test("NOERROR", ["pre", yxrrset("n.$zone 300 NS")]);
test("NOERROR", ["update", rr_del("n.$zone")]);
test("NOERROR", ["pre", nxrrset("n.$zone 300 NS")]);
# Apex
test("NOERROR", ["update", rr_del("$zone NS")]);
test("NOERROR", ["pre",
yxrrset("$zone 300 NS ns2.$zone")]);
test("NOERROR", ["update", rr_del("$zone")]);
test("NOERROR", ["pre",
yxrrset("$zone 300 NS ns2.$zone")]);
# They should not touch the SOA, either.
test("NOERROR", ["update", rr_del("$zone SOA")]);
test("NOERROR", ["pre", yxrrset("$zone SOA")]);
section("Idempotency");
test("NOERROR", ["update", rr_add("d.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["pre", yxrrset("d.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["update",
rr_add("d.$zone 300 A 73.80.65.49"),
rr_del("d.$zone A")]);
test("NOERROR", ["pre", nxrrset("d.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["update", rr_del("d.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["pre", nxrrset("d.$zone 300 A")]);
test("NOERROR", ["update",
rr_del("d.$zone 300 A"),
rr_add("d.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["pre", yxrrset("d.$zone 300 A")]);
section("Out-of-zone prerequisites and updates");
test("NOTZONE", ["pre", yxrrset("a.somewhere.else. 300 A 73.80.65.49")]);
test("NOTZONE", ["update", rr_add("a.somewhere.else. 300 A 73.80.65.49")]);
section("Glue");
test("NOERROR", ["update", rr_add("s.$zone 300 NS ns.s.$zone")]);
test("NOERROR", ["update", rr_add("ns.s.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["pre", yxrrset("ns.s.$zone 300 A 73.80.65.49")]);
section("Wildcards");
test("NOERROR", ["update", rr_add("*.$zone 300 MX 10 mail.$zone")]);
test("NOERROR", ["pre", yxrrset("*.$zone 300 MX 10 mail.$zone")]);
test("NXRRSET", ["pre", yxrrset("w.$zone 300 MX 10 mail.$zone")]);
test("NOERROR", ["pre", nxrrset("w.$zone MX")]);
test("NOERROR", ["pre", nxdomain("w.$zone")]);
section("SOA serial handling");
my $soatimers = "20 20 1814400 3600";
# Get the current SOA serial number.
my $query = $res->query($zone, "SOA");
my ($old_soa) = $query->answer;
my $old_serial = $old_soa->serial;
# Increment it by 10.
my $new_serial = $old_serial + 10;
if ($new_serial > 0xFFFFFFFF) {
$new_serial -= 0x80000000;
$new_serial -= 0x80000000;
}
# Replace the SOA with a new one.
test("NOERROR", ["update", rr_add("$zone 300 SOA mname1. . $new_serial $soatimers")]);
# Check that the SOA really got replaced.
($db_soa) = $res->query($zone, "SOA")->answer;
assert($db_soa->mname eq "mname1");
# Check that attempts to decrement the serial number are ignored.
$new_serial = $old_serial - 10;
if ($new_serial < 0) {
$new_serial += 0x80000000;
$new_serial += 0x80000000;
}
test("NOERROR", ["update", rr_add("$zone 300 SOA mname2. . $new_serial $soatimers")]);
assert($db_soa->mname eq "mname1");
# Check that attempts to leave the serial number unchanged are ignored.
($old_soa) = $res->query($zone, "SOA")->answer;
$old_serial = $old_soa->serial;
test("NOERROR", ["update", rr_add("$zone 300 SOA mname3. . $old_serial " .
$soatimers)]);
($db_soa) = $res->query($zone, "SOA")->answer;
assert($db_soa->mname eq "mname1");
#
# Currently commented out because Net::DNS does not properly
# support multiple strings in TXT records.
#
#section("Big data");
#test("NOERROR", ["update", rr_add("a.$zone 300 TXT aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc")]);
#test("NOERROR", ["update", rr_del("a.$zone 300 TXT aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc")]);
test("NOERROR", ["update", rr_add("a.$zone 300 TXT " . ("foo " x 3))]);
section("Updating TTLs only");
test("NOERROR", ["update", rr_add("t.$zone 300 A 73.80.65.49")]);
($a) = $res->query("t.$zone", "A")->answer;
$ttl = $a->ttl;
assert($ttl == 300, "incorrect TTL value $ttl != 300");
test("NOERROR", ["update",
rr_del("t.$zone 300 A 73.80.65.49"),
rr_add("t.$zone 301 A 73.80.65.49")]);
($a) = $res->query("t.$zone", "A")->answer;
$ttl = $a->ttl;
assert($ttl == 301, "incorrect TTL value $ttl != 301");
# Add an RR that is identical to an existing one except for the TTL.
# RFC2136 is not clear about what this should do; it says "duplicate RRs
# will be silently ignored" but is an RR differing only in TTL
# to be considered a duplicate or not? The test assumes that it
# should not be considered a duplicate.
test("NOERROR", ["update", rr_add("t.$zone 302 A 73.80.65.50")]);
($a) = $res->query("t.$zone", "A")->answer;
$ttl = $a->ttl;
assert($ttl == 302, "incorrect TTL value $ttl != 302");
section("TTL normalization");
# The desired behaviour is that the old RRs get their TTL
# changed to match the new one. RFC2136 does not explicitly
# specify this, but I think it makes more sense than the
# alternatives.
test("NOERROR", ["update", rr_add("t.$zone 303 A 73.80.65.51")]);
(@answers) = $res->query("t.$zone", "A")->answer;
$nanswers = scalar @answers;
assert($nanswers == 3, "wrong number of answers $nanswers != 3");
foreach $a (@answers) {
$ttl = $a->ttl;
assert($ttl == 303, "incorrect TTL value $ttl != 303");
}
section("Obscuring existing data by zone cut");
test("NOERROR", ["update", rr_add("a.u.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["update", rr_add("b.u.$zone 300 A 73.80.65.49")]);
test("NOERROR", ["update", rr_add("u.$zone 300 TXT txt-not-in-nxt")]);
test("NOERROR", ["update", rr_add("u.$zone 300 NS ns.u.$zone")]);
test("NOERROR", ["update", rr_del("u.$zone 300 NS ns.u.$zone")]);
if ($failures) {
print "I:$failures tests failed.\n";
} else {
print "I:All tests successful.\n";
}
exit $failures;
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