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[#4056] backport #3949 to v3_0

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Razvan Becheriu 2025-08-12 17:59:33 +03:00
parent ba0d57ac1b
commit 86de039f21
7 changed files with 41 additions and 28 deletions
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4
changelog_unreleased/4056-backport-3949-to-v3_0-ddns-qualifying-suffix Normal file
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@ -0,0 +1,4 @@
[bug] tmark, razvan
Avoid adding the qualifying-suffix to fully qualified
host names specified in host reservations.
(Gitlab #4056, #3949)

2
meson.build
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@ -17,7 +17,7 @@
project(
'kea',
'cpp',
version: '3.0.0-git',
version: '3.0.1-git',
meson_version: '>=1.1.0',
license: 'MPL-2.0',
license_files: ['COPYING'],

17
src/bin/dhcp4/tests/host_unittest.cc
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@ -41,12 +41,13 @@ const char* CONFIGS[] = {
"{ \"interfaces-config\": {\n"
" \"interfaces\": [ \"*\" ]\n"
"},\n"
"\"ddns-qualifying-suffix\": \"example.org.\",\n"
"\"host-reservation-identifiers\": [ \"circuit-id\", \"hw-address\",\n"
" \"duid\", \"client-id\" ],\n"
"\"reservations\": [ \n"
"{\n"
" \"hw-address\": \"aa:bb:cc:dd:ee:ff\",\n"
" \"hostname\": \"hw-host-dynamic\"\n"
" \"hostname\": \"hw-host-dynamic.already.com.\"\n"
"},\n"
"{\n"
" \"hw-address\": \"01:02:03:04:05:06\",\n"
@ -55,12 +56,12 @@ const char* CONFIGS[] = {
"},\n"
"{\n"
" \"hw-address\": \"02:02:03:04:05:06\",\n"
" \"hostname\": \"hw-host-fixed-in-range\",\n"
" \"hostname\": \"hw-host-fixed-in-range.example.org.\",\n"
" \"ip-address\": \"10.0.0.77\"\n"
"},\n"
"{\n"
" \"duid\": \"01:02:03:04:05\",\n"
" \"hostname\": \"duid-host\"\n"
" \"hostname\": \"duid-host.\"\n"
"},\n"
"{\n"
" \"circuit-id\": \"'charter950'\",\n"
@ -590,7 +591,7 @@ TEST_F(HostTest, globalHardwareDynamicAddress) {
Dhcp4Client client(srv_, Dhcp4Client::SELECTING);
client.setHWAddress("aa:bb:cc:dd:ee:ff");
runDoraTest(CONFIGS[0], client, "hw-host-dynamic", "10.0.0.10");
runDoraTest(CONFIGS[0], client, "hw-host-dynamic.already.com", "10.0.0.10");
}
// Verifies that a client matched to a global in-subnet address reservation
@ -600,7 +601,7 @@ TEST_F(HostTest, globalHardwareFixedAddressInRange) {
Dhcp4Client client(srv_, Dhcp4Client::SELECTING);
client.setHWAddress("02:02:03:04:05:06");
runDoraTest(CONFIGS[0], client, "hw-host-fixed-in-range", "10.0.0.77");
runDoraTest(CONFIGS[0], client, "hw-host-fixed-in-range.example.org", "10.0.0.77");
}
// Verifies that a client matched to a global out-of-range address reservation
@ -610,7 +611,7 @@ TEST_F(HostTest, globalHardwareFixedAddressOutOfRange) {
Dhcp4Client client(srv_, Dhcp4Client::SELECTING);
client.setHWAddress("01:02:03:04:05:06");
runDoraTest(CONFIGS[0], client, "hw-host-fixed-out-of-range", "10.0.0.10");
runDoraTest(CONFIGS[0], client, "hw-host-fixed-out-of-range.example.org", "10.0.0.10");
}
// Verifies that a client can be matched to a global reservation by DUID
@ -641,7 +642,7 @@ TEST_F(HostTest, globalCircuitId) {
// Set the circuit id
client.setCircuitId("charter950");
runDoraTest(CONFIGS[0], client, "circuit-id-host", "10.0.0.10");
runDoraTest(CONFIGS[0], client, "circuit-id-host.example.org", "10.0.0.10");
}
// Verifies that a client can be matched to a global reservation by client-id
@ -655,7 +656,7 @@ TEST_F(HostTest, globalClientID) {
// - 11:22:33:44:55:66 - is an actual DUID for which there is a
client.includeClientId("01:11:22:33:44:55:66");
runDoraTest(CONFIGS[0], client, "client-id-host", "10.0.0.10");
runDoraTest(CONFIGS[0], client, "client-id-host.example.org", "10.0.0.10");
}
// Verifies that even when a matching global reservation exists,

8
src/bin/dhcp6/tests/host_unittest.cc
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@ -68,6 +68,7 @@ const char* CONFIGS[] = {
"\"preferred-lifetime\": 3000,"
"\"rebind-timer\": 2000, "
"\"renew-timer\": 1000, "
"\"ddns-qualifying-suffix\":\"example.org.\", "
"\"subnet6\": [ "
" { "
" \"id\": 1, "
@ -82,7 +83,8 @@ const char* CONFIGS[] = {
" },"
" {"
" \"duid\": \"01:02:03:05\","
" \"ip-addresses\": [ \"2001:db8:1:1::babf\" ]"
" \"ip-addresses\": [ \"2001:db8:1:1::babf\" ],"
" \"hostname\": \"hare.mad-hatter.com.\""
" } ]"
" } ]"
"}",
@ -1551,7 +1553,7 @@ TEST_F(HostTest, basicSarrs) {
// and lease has reserved hostname
Lease6Ptr lease_server = checkLease(lease_client);
ASSERT_TRUE(lease_server);
EXPECT_EQ("alice", lease_server->hostname_);
EXPECT_EQ("alice.example.org", lease_server->hostname_);
// Now redo the client, adding one to the DUID
client.clearConfig();
@ -1569,7 +1571,7 @@ TEST_F(HostTest, basicSarrs) {
// and that the server lease has NO hostname
lease_server = checkLease(lease_client);
ASSERT_TRUE(lease_server);
EXPECT_EQ("", lease_server->hostname_);
EXPECT_EQ("hare.mad-hatter.com", lease_server->hostname_);
// Now redo the client with yet another DUID and verify that
// we get a dynamic address.

9
src/lib/dhcpsrv/d2_client_mgr.cc
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@ -187,11 +187,10 @@ D2ClientMgr::qualifyName(const std::string& partial_name,
const DdnsParams& ddns_params,
const bool trailing_dot) const {
std::ostringstream gen_name;
gen_name << partial_name;
std::string suffix = ddns_params.getQualifyingSuffix();
bool suffix_present = true;
if (!suffix.empty()) {
if (!suffix.empty() && partial_name.back() != '.') {
bool suffix_present = true;
std::string str = gen_name.str();
auto suffix_rit = suffix.rbegin();
if (*suffix_rit == '.') {
@ -199,10 +198,6 @@ D2ClientMgr::qualifyName(const std::string& partial_name,
}
auto gen_rit = str.rbegin();
if (*gen_rit == '.') {
++gen_rit;
}
while (suffix_rit != suffix.rend()) {
if ((gen_rit == str.rend()) || (*suffix_rit != *gen_rit)) {
// They don't match.

7
src/lib/dhcpsrv/d2_client_mgr.h
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@ -491,7 +491,6 @@ D2ClientMgr::adjustDomainName(const T& fqdn, T& fqdn_resp, const DdnsParams& ddn
} else {
// Sanitize the name the client sent us, if we're configured to do so.
std::string client_name = fqdn.getDomainName();
isc::util::str::StringSanitizerPtr sanitizer = ddns_params.getHostnameSanitizer();
if (sanitizer) {
// We need the raw text form, so we can replace escaped chars
@ -521,6 +520,12 @@ D2ClientMgr::adjustDomainName(const T& fqdn, T& fqdn_resp, const DdnsParams& ddn
// If the supplied name is partial, qualify it by adding the suffix.
if (fqdn.getDomainNameType() == T::PARTIAL) {
if (client_name.back() == '.') {
// By definition a partial cannot end in a dot, sanitizing above
// may have added one. Strip it, so we'll add the suffix (if one).
client_name.pop_back();
}
fqdn_resp.setDomainName(qualifyName(client_name, ddns_params, true), T::FULL);
} else {
fqdn_resp.setDomainName(client_name, T::FULL);

22
src/lib/dhcpsrv/tests/d2_client_unittest.cc
View File

@ -639,13 +639,8 @@ TEST_F(D2ClientMgrParamsTest, qualifyName) {
qualified_name = mgr.qualifyName(partial_name, *ddns_params_, do_dot);
EXPECT_EQ("somehost.hasdot.com.", qualified_name);
// Verify that the qualifying suffix gets appended without an
// extraneous dot when partial_name ends with a "."
qualified_name = mgr.qualifyName("somehost.", *ddns_params_, do_dot);
EXPECT_EQ("somehost.hasdot.com.", qualified_name);
// Verify that a name with a trailing dot does not get an extraneous
// dot when the suffix is blank
// Verify that the qualifying suffix does not get appended nor an
// extraneous dot added to a name with a trailing dot.
subnet_->setDdnsQualifyingSuffix("");
qualified_name = mgr.qualifyName("somehost.", *ddns_params_, do_dot);
EXPECT_EQ("somehost.", qualified_name);
@ -664,7 +659,6 @@ TEST_F(D2ClientMgrParamsTest, qualifyName) {
// suffix is blank and trailing dot is false
qualified_name = mgr.qualifyName("somehost.", *ddns_params_, do_not_dot);
EXPECT_EQ("somehost", qualified_name);
}
/// @brief Tests the qualifyName method's ability to avoid duplicating
@ -802,6 +796,12 @@ TEST_F(D2ClientMgrParamsTest, adjustDomainNameV4) {
"myhost.example.com.", Option4ClientFqdn::FULL,
"myhost.example.com.", Option4ClientFqdn::FULL
},
{
"RCM_NEVER #4, partial client name with trailing .",
D2ClientConfig::RCM_NEVER,
"myhost.", Option4ClientFqdn::PARTIAL,
"myhost.suffix.com.", Option4ClientFqdn::FULL
},
{
"RCM_ALWAYS #1, empty client name",
D2ClientConfig::RCM_ALWAYS,
@ -917,6 +917,12 @@ TEST_F(D2ClientMgrParamsTest, adjustDomainNameV6) {
"myhost.example.com.", Option6ClientFqdn::FULL,
"myhost.example.com.", Option6ClientFqdn::FULL
},
{
"RCM_NEVER #4, partial client name with trailing .",
D2ClientConfig::RCM_NEVER,
"myhost.", Option6ClientFqdn::PARTIAL,
"myhost.suffix.com.", Option6ClientFqdn::FULL
},
{
"RCM_ALWAYS #1, empty client name",
D2ClientConfig::RCM_ALWAYS,