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+// Copyright (C) 2015-2023 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+#include <dhcp/tests/iface_mgr_test_config.h>
+#include <dhcp6/tests/dhcp6_test_utils.h>
+#include <dhcp6/tests/dhcp6_client.h>
+#include <dhcp/option6_addrlst.h>
+#include <dhcp/option6_client_fqdn.h>
+#include <stats/stats_mgr.h>
+
+using namespace isc;
+using namespace isc::dhcp;
+using namespace isc::dhcp::test;
+
+namespace {
+
+/// @brief Set of JSON configurations used by the Information-Request unit tests.
+///
+/// - Configuration 0:
+/// - one subnet used on eth0 interface
+/// - with address and prefix pools
+/// - dns-servers option
+/// - Configuration 1:
+/// - one subnet used on eth0 interface
+/// - no addresses or prefixes
+/// - domain-search option
+/// - Configuration 2:
+/// - one subnet used on eth0 interface
+/// - dns-servers option for subnet
+/// - sip-servers defined in global scope
+/// - Configuration 3:
+/// - nis-server, nis-domain specified in global scope
+/// - no subnets defined
+const char* CONFIGS[] = {
+ // Configuration 0
+ "{ \"interfaces-config\": {"
+ " \"interfaces\": [ \"*\" ]"
+ "},"
+ "\"preferred-lifetime\": 3000,"
+ "\"rebind-timer\": 2000, "
+ "\"renew-timer\": 1000, "
+ "\"subnet6\": [ { "
+ " \"id\": 1, "
+ " \"pools\": [ { \"pool\": \"2001:db8:2::/64\" } ],"
+ " \"pd-pools\": ["
+ " { \"prefix\": \"2001:db8:3::\", "
+ " \"prefix-len\": 48, "
+ " \"delegated-len\": 64"
+ " } ],"
+ " \"option-data\": [ {"
+ " \"name\": \"dns-servers\","
+ " \"data\": \"2001:db8::1, 2001:db8::2\""
+ " } ],"
+ " \"subnet\": \"2001:db8::/32\", "
+ " \"interface\": \"eth0\""
+ " } ],"
+ "\"valid-lifetime\": 4000 }",
+
+ // Configuration 1
+ "{ \"interfaces-config\": {"
+ " \"interfaces\": [ \"*\" ]"
+ "},"
+ "\"preferred-lifetime\": 3000,"
+ "\"rebind-timer\": 2000, "
+ "\"renew-timer\": 1000, "
+ "\"subnet6\": [ { "
+ " \"id\": 1, "
+ " \"option-data\": [ {"
+ " \"name\": \"sip-server-addr\","
+ " \"data\": \"2001:db8::abcd\""
+ " } ],"
+ " \"subnet\": \"2001:db8::/32\", "
+ " \"interface\": \"eth0\""
+ " } ],"
+ "\"valid-lifetime\": 4000 }",
+
+ // Configuration 2
+ "{ \"interfaces-config\": {"
+ " \"interfaces\": [ \"*\" ]"
+ "},"
+ "\"preferred-lifetime\": 3000,"
+ "\"rebind-timer\": 2000, "
+ "\"renew-timer\": 1000, "
+ " \"option-data\": [ {"
+ " \"name\": \"sip-server-addr\","
+ " \"data\": \"2001:db8::1\""
+ " } ],"
+ "\"subnet6\": [ { "
+ " \"id\": 1, "
+ " \"subnet\": \"2001:db8::/32\", "
+ " \"interface\": \"eth0\","
+ " \"option-data\": [ {"
+ " \"name\": \"dns-servers\","
+ " \"data\": \"2001:db8::2\""
+ " } ]"
+ " } ],"
+ "\"valid-lifetime\": 4000 }",
+
+ // Configuration 3
+ "{ \"interfaces-config\": {"
+ " \"interfaces\": [ \"*\" ]"
+ "},"
+ "\"option-data\": [ {"
+ " \"name\": \"nis-servers\","
+ " \"data\": \"2001:db8::1, 2001:db8::2\""
+ " } ]"
+ "}"
+};
+
+/// @brief Test fixture class for testing 4-way exchange: Solicit-Advertise,
+/// Request-Reply.
+class InfRequestTest : public Dhcpv6SrvTest {
+public:
+ /// @brief Constructor.
+ ///
+ /// Sets up fake interfaces.
+ InfRequestTest()
+ : Dhcpv6SrvTest(),
+ iface_mgr_test_config_(true) {
+
+ // Let's wipe all existing statistics.
+ isc::stats::StatsMgr::instance().removeAll();
+ }
+
+ /// @brief Destructor.
+ ///
+ /// Removes any statistics that may have been set.
+ ~InfRequestTest() {
+ // Let's wipe all existing statistics.
+ isc::stats::StatsMgr::instance().removeAll();
+ }
+
+ /// @brief Interface Manager's fake configuration control.
+ IfaceMgrTestConfig iface_mgr_test_config_;
+};
+
+/// Check that server processes correctly an incoming inf-request in a
+/// typical subnet that has also address and prefix pools.
+TEST_F(InfRequestTest, infRequestBasic) {
+ Dhcp6Client client;
+
+ // Configure client to request IA_PD.
+ configure(CONFIGS[0], *client.getServer());
+ // Make sure we ended-up having expected number of subnets configured.
+ const Subnet6Collection* subnets = CfgMgr::instance().getCurrentCfg()->
+ getCfgSubnets6()->getAll();
+ ASSERT_EQ(1, subnets->size());
+
+ // Perform 2-way exchange (Inf-request/reply)
+ client.requestOption(D6O_NAME_SERVERS);
+ ASSERT_NO_THROW(client.doInfRequest());
+
+ // Confirm that there's a response
+ Pkt6Ptr response = client.getContext().response_;
+ ASSERT_TRUE(response);
+
+ // Check that it contains our client-id
+ OptionPtr client_id = response->getOption(D6O_CLIENTID);
+ ASSERT_TRUE(client_id);
+ EXPECT_TRUE(compareOptions(client_id, client.getClientId()));
+
+ // Check that it contains proper server-id
+ OptionPtr server_id = response->getOption(D6O_SERVERID);
+ ASSERT_TRUE(server_id);
+ EXPECT_TRUE(compareOptions(server_id, client.getServer()->getServerID()));
+
+ // Check that we received requested DNS servers option
+ Option6AddrLstPtr dns = boost::dynamic_pointer_cast<Option6AddrLst>
+ (response->getOption(D6O_NAME_SERVERS));
+ ASSERT_TRUE(dns);
+ Option6AddrLst::AddressContainer addrs = dns->getAddresses();
+ ASSERT_EQ(2, addrs.size());
+ EXPECT_EQ("2001:db8::1", addrs[0].toText());
+ EXPECT_EQ("2001:db8::2", addrs[1].toText());
+}
+
+/// Check that server processes correctly an incoming inf-request
+/// that does not hold client-id. It's so called anonymous inf-request.
+/// Uncommon, but certainly valid behavior.
+TEST_F(InfRequestTest, infRequestAnonymous) {
+ Dhcp6Client client;
+
+ // Configure client to request IA_PD.
+ configure(CONFIGS[0], *client.getServer());
+ // Make sure we ended-up having expected number of subnets configured.
+ const Subnet6Collection* subnets = CfgMgr::instance().getCurrentCfg()->
+ getCfgSubnets6()->getAll();
+ ASSERT_EQ(1, subnets->size());
+
+ // Perform 2-way exchange (Inf-request/reply)
+ client.requestOption(D6O_NAME_SERVERS);
+ client.useClientId(false);
+ ASSERT_NO_THROW(client.doInfRequest());
+
+ // Confirm that there's a response
+ Pkt6Ptr response = client.getContext().response_;
+ ASSERT_TRUE(response);
+
+ // Check that we received the requested DNS servers option
+ Option6AddrLstPtr dns = boost::dynamic_pointer_cast<Option6AddrLst>
+ (response->getOption(D6O_NAME_SERVERS));
+ ASSERT_TRUE(dns);
+ Option6AddrLst::AddressContainer addrs = dns->getAddresses();
+ ASSERT_EQ(2, addrs.size());
+ EXPECT_EQ("2001:db8::1", addrs[0].toText());
+ EXPECT_EQ("2001:db8::2", addrs[1].toText());
+}
+
+/// Check that server processes correctly an incoming inf-request
+/// if there is a subnet without any addresses or prefixes configured.
+TEST_F(InfRequestTest, infRequestStateless) {
+ Dhcp6Client client;
+
+ // Configure client to request IA_PD.
+ configure(CONFIGS[1], *client.getServer());
+ // Make sure we ended-up having expected number of subnets configured.
+ const Subnet6Collection* subnets = CfgMgr::instance().getCurrentCfg()->
+ getCfgSubnets6()->getAll();
+ ASSERT_EQ(1, subnets->size());
+
+ // Perform 2-way exchange (Inf-request/reply)
+ client.requestOption(D6O_SIP_SERVERS_ADDR);
+ ASSERT_NO_THROW(client.doInfRequest());
+
+ // Confirm that there's a response
+ Pkt6Ptr response = client.getContext().response_;
+ ASSERT_TRUE(response);
+
+ // Check that we received the requested SIP servers option
+ Option6AddrLstPtr sip = boost::dynamic_pointer_cast<Option6AddrLst>
+ (response->getOption(D6O_SIP_SERVERS_ADDR));
+ ASSERT_TRUE(sip);
+ Option6AddrLst::AddressContainer addrs = sip->getAddresses();
+ ASSERT_EQ(1, addrs.size());
+ EXPECT_EQ("2001:db8::abcd", addrs[0].toText());
+}
+
+/// Check that server processes correctly an incoming inf-request
+/// if there are options defined at both global and subnet scope.
+TEST_F(InfRequestTest, infRequestSubnetAndGlobal) {
+ Dhcp6Client client;
+
+ // Configure client to request IA_PD.
+ configure(CONFIGS[2], *client.getServer());
+ // Make sure we ended-up having expected number of subnets configured.
+ const Subnet6Collection* subnets = CfgMgr::instance().getCurrentCfg()->
+ getCfgSubnets6()->getAll();
+ ASSERT_EQ(1, subnets->size());
+
+ // Perform 2-way exchange (Inf-request/reply)
+ client.requestOption(D6O_SIP_SERVERS_ADDR);
+ client.requestOption(D6O_NAME_SERVERS);
+ ASSERT_NO_THROW(client.doInfRequest());
+
+ // Confirm that there's a response
+ Pkt6Ptr response = client.getContext().response_;
+ ASSERT_TRUE(response);
+
+ // Check that we received the requested sip servers option
+ Option6AddrLstPtr sip = boost::dynamic_pointer_cast<Option6AddrLst>
+ (response->getOption(D6O_SIP_SERVERS_ADDR));
+ ASSERT_TRUE(sip);
+ Option6AddrLst::AddressContainer addrs = sip->getAddresses();
+ ASSERT_EQ(1, addrs.size());
+ EXPECT_EQ("2001:db8::1", addrs[0].toText());
+
+ // Check that we received the requested dns servers option
+ Option6AddrLstPtr dns = boost::dynamic_pointer_cast<Option6AddrLst>
+ (response->getOption(D6O_NAME_SERVERS));
+ ASSERT_TRUE(dns);
+ addrs = dns->getAddresses();
+ ASSERT_EQ(1, addrs.size());
+ EXPECT_EQ("2001:db8::2", addrs[0].toText());
+}
+
+/// Check that server processes correctly an incoming inf-request
+/// if there are options defined at global scope only (no subnets).
+TEST_F(InfRequestTest, infRequestNoSubnets) {
+ Dhcp6Client client;
+
+ // Configure client to request IA_PD.
+ configure(CONFIGS[3], *client.getServer());
+ // Make sure we ended-up having expected number of subnets configured.
+ const Subnet6Collection* subnets = CfgMgr::instance().getCurrentCfg()->
+ getCfgSubnets6()->getAll();
+ ASSERT_EQ(0, subnets->size());
+
+ // Perform 2-way exchange (Inf-request/reply)
+ client.requestOption(D6O_NIS_SERVERS);
+ ASSERT_NO_THROW(client.doInfRequest());
+
+ // Confirm that there's a response
+ Pkt6Ptr response = client.getContext().response_;
+ ASSERT_TRUE(response);
+
+ // Check that we received the requested sip servers option
+ Option6AddrLstPtr nis = boost::dynamic_pointer_cast<Option6AddrLst>
+ (response->getOption(D6O_NIS_SERVERS));
+ ASSERT_TRUE(nis);
+ Option6AddrLst::AddressContainer addrs = nis->getAddresses();
+ ASSERT_EQ(2, addrs.size());
+ EXPECT_EQ("2001:db8::1", addrs[0].toText());
+ EXPECT_EQ("2001:db8::2", addrs[1].toText());
+}
+
+/// Check that server processes correctly an incoming inf-request in a
+/// typical subnet that has also address and prefix pools.
+TEST_F(InfRequestTest, infRequestStats) {
+ Dhcp6Client client;
+
+ // Configure client to request IA_PD.
+ configure(CONFIGS[0], *client.getServer());
+ // Make sure we ended-up having expected number of subnets configured.
+ const Subnet6Collection* subnets = CfgMgr::instance().getCurrentCfg()->
+ getCfgSubnets6()->getAll();
+ ASSERT_EQ(1, subnets->size());
+
+ // Check that the tested statistics is initially set to 0
+ using namespace isc::stats;
+ StatsMgr& mgr = StatsMgr::instance();
+ ObservationPtr pkt6_rcvd = mgr.getObservation("pkt6-received");
+ ObservationPtr pkt6_infreq_rcvd = mgr.getObservation("pkt6-infrequest-received");
+ ObservationPtr pkt6_reply_sent = mgr.getObservation("pkt6-reply-sent");
+ ObservationPtr pkt6_sent = mgr.getObservation("pkt6-sent");
+ ASSERT_TRUE(pkt6_rcvd);
+ ASSERT_TRUE(pkt6_infreq_rcvd);
+ ASSERT_TRUE(pkt6_reply_sent);
+ ASSERT_TRUE(pkt6_sent);
+ EXPECT_EQ(0, pkt6_rcvd->getInteger().first);
+ EXPECT_EQ(0, pkt6_infreq_rcvd->getInteger().first);
+ EXPECT_EQ(0, pkt6_reply_sent->getInteger().first);
+ EXPECT_EQ(0, pkt6_sent->getInteger().first);
+
+ // Perform 2-way exchange (Inf-request/reply)
+ client.requestOption(D6O_NAME_SERVERS);
+ ASSERT_NO_THROW(client.doInfRequest());
+
+ // Confirm that there's a response
+ Pkt6Ptr response = client.getContext().response_;
+ ASSERT_TRUE(response);
+
+ pkt6_rcvd = mgr.getObservation("pkt6-received");
+ pkt6_infreq_rcvd = mgr.getObservation("pkt6-infrequest-received");
+ pkt6_reply_sent = mgr.getObservation("pkt6-reply-sent");
+ pkt6_sent = mgr.getObservation("pkt6-sent");
+
+ ASSERT_TRUE(pkt6_rcvd);
+ ASSERT_TRUE(pkt6_infreq_rcvd);
+ ASSERT_TRUE(pkt6_reply_sent);
+ ASSERT_TRUE(pkt6_sent);
+
+ // They also must have expected values.
+ EXPECT_EQ(1, pkt6_rcvd->getInteger().first);
+ EXPECT_EQ(1, pkt6_infreq_rcvd->getInteger().first);
+ EXPECT_EQ(1, pkt6_reply_sent->getInteger().first);
+ EXPECT_EQ(1, pkt6_sent->getInteger().first);
+}
+
+} // end of anonymous namespace
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