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+// Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC")
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+//
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+// Permission to use, copy, modify, and/or distribute this software for any
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+// purpose with or without fee is hereby granted, provided that the above
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+// copyright notice and this permission notice appear in all copies.
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+//
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+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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+// PERFORMANCE OF THIS SOFTWARE.
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+
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+#include <config.h>
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+#include <asiolink/io_address.h>
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+#include <cc/data.h>
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+#include <dhcp6/config_parser.h>
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+#include <dhcp6/tests/dhcp6_test_utils.h>
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+#include <dhcp6/tests/dhcp6_client.h>
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+
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+using namespace isc;
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+using namespace isc::asiolink;
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+using namespace isc::data;
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+using namespace isc::dhcp;
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+using namespace isc::dhcp::test;
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+using namespace isc::test;
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+
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+namespace {
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+
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+/// @brief Set of JSON configurations used throughout the Rebind tests.
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+const std::string REBIND_CONFIGS[] = {
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+// Configuration 0
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+ "{ \"interfaces\": [ \"all\" ],"
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+ "\"preferred-lifetime\": 3000,"
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+ "\"rebind-timer\": 2000, "
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+ "\"renew-timer\": 1000, "
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+ "\"subnet6\": [ { "
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+ " \"pool\": [ \"2001:db8:1::/64\" ],"
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+ " \"subnet\": \"2001:db8:1::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth0\""
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+ " },"
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+ " {"
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+ " \"pool\": [ \"2001:db8:2::/64\" ],"
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+ " \"subnet\": \"2001:db8:2::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth1\""
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+ " } ],"
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+ "\"valid-lifetime\": 4000 }",
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+
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+// Configuration 1
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+ "{ \"interfaces\": [ \"all\" ],"
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+ "\"preferred-lifetime\": 3000,"
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+ "\"rebind-timer\": 2000, "
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+ "\"renew-timer\": 1000, "
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+ "\"subnet6\": [ { "
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+ " \"pool\": [ \"2001:db8:3::/64\" ],"
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+ " \"subnet\": \"2001:db8:3::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth1\""
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+ " },"
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+ " {"
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+ " \"pool\": [ \"2001:db8:4::/64\" ],"
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+ " \"subnet\": \"2001:db8:4::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth0\""
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+ " } ],"
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+ "\"valid-lifetime\": 4000 }",
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+
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+// Configuration 2
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+ "{ \"interfaces\": [ \"all\" ],"
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+ "\"preferred-lifetime\": 3000,"
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+ "\"rebind-timer\": 2000, "
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+ "\"renew-timer\": 1000, "
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+ "\"subnet6\": [ { "
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+ " \"pool\": [ \"3000:1::/64\" ],"
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+ " \"subnet\": \"3000:1::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth0\""
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+ " },"
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+ " {"
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+ " \"pool\": [ \"3000:2::/64\" ],"
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+ " \"subnet\": \"3000:2::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth1\""
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+ " } ],"
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+ "\"valid-lifetime\": 4000 }",
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+
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+// Configuration 3
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+ "{ \"interfaces\": [ \"all\" ],"
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+ "\"preferred-lifetime\": 3000,"
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+ "\"rebind-timer\": 2000, "
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+ "\"renew-timer\": 1000, "
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+ "\"subnet6\": [ { "
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+ " \"pool\": [ \"3000:3::/64\" ],"
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+ " \"subnet\": \"3000:3::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth1\""
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+ " },"
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+ " {"
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+ " \"pool\": [ \"3000:4::/64\" ],"
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+ " \"subnet\": \"3000:4::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth0\""
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+ " } ],"
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+ "\"valid-lifetime\": 4000 }",
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+
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+// Configuration 4
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+ "{ \"interfaces\": [ \"all\" ],"
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+ "\"preferred-lifetime\": 3000,"
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+ "\"rebind-timer\": 2000, "
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+ "\"renew-timer\": 1000, "
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+ "\"subnet6\": [ { "
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+ " \"pool\": [ \"3000:3::/64\" ],"
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+ " \"subnet\": \"3000:3::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth1\""
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+ " },"
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+ " {"
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+ " \"pool\": [ \"3000:4::/64\" ],"
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+ " \"subnet\": \"3000:4::/48\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth0\""
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+ " } ],"
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+ "\"valid-lifetime\": 4000 }",
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+
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+// Configuration 5
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+ "{ \"interfaces\": [ \"all\" ],"
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+ "\"preferred-lifetime\": 3000,"
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+ "\"rebind-timer\": 2000, "
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+ "\"renew-timer\": 1000, "
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+ "\"subnet6\": [ { "
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+ " \"pd-pools\": ["
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+ " { \"prefix\": \"2001:db8:1:01::\", "
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+ " \"prefix-len\": 72, "
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+ " \"delegated-len\": 80"
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+ " } ],"
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+ " \"subnet\": \"2001:db8:1::/40\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth0\""
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+ " },"
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+ " {"
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+ " \"pd-pools\": ["
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+ " { \"prefix\": \"2001:db8:2:01::\", "
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+ " \"prefix-len\": 72, "
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+ " \"delegated-len\": 80"
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+ " } ],"
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+ " \"subnet\": \"2001:db8:2::/40\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth1\""
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+ " } ],"
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+ "\"valid-lifetime\": 4000 }",
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+
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+// Configuration 6
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+ "{ \"interfaces\": [ \"all\" ],"
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+ "\"preferred-lifetime\": 3000,"
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+ "\"rebind-timer\": 2000, "
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+ "\"renew-timer\": 1000, "
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+ "\"subnet6\": [ { "
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+ " \"pd-pools\": ["
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+ " { \"prefix\": \"2001:db8:3:01::\", "
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+ " \"prefix-len\": 72, "
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+ " \"delegated-len\": 80"
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+ " } ],"
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+ " \"subnet\": \"2001:db8:3::/40\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth1\""
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+ " },"
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+ " {"
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+ " \"pd-pools\": ["
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+ " { \"prefix\": \"2001:db8:4:01::\", "
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+ " \"prefix-len\": 72, "
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+ " \"delegated-len\": 80"
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+ " } ],"
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+ " \"subnet\": \"2001:db8:4::/40\", "
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+ " \"interface-id\": \"\","
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+ " \"interface\": \"eth0\""
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+ " } ],"
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+ "\"valid-lifetime\": 4000 }",
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+
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+};
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+
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+/// @brief Test fixture class for testing Rebind.
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+class RebindTest : public Dhcpv6SrvTest {
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+public:
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+ /// @brief Configure the DHCPv6 server using the JSON string.
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+ ///
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+ /// @param config New configuration in JSON format.
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+ /// @param srv Server to be configured.
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+ void configure(const std::string& config, NakedDhcpv6Srv& srv);
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+
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+ /// @brief Make 4-way exchange to obtain a lease.
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+ ///
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+ /// @param config_index Index of the configuration held in @c REBIND_CONFIGS
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+ /// to use to configure the server.
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+ /// @param subnets_num Number of subnets being created with the specified
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+ /// configuration.
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+ /// @param client Object representing a test DHCPv6 client to use.
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+ void requestLease(const int config_index, const int subnets_num,
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+ Dhcp6Client& client);
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+
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+};
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+
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+void
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+RebindTest::configure(const std::string& config, NakedDhcpv6Srv& srv) {
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+ ElementPtr json = Element::fromJSON(config);
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+ ConstElementPtr status;
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+
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+ // Configure the server and make sure the config is accepted
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+ EXPECT_NO_THROW(status = configureDhcp6Server(srv, json));
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+ ASSERT_TRUE(status);
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+ int rcode;
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+ ConstElementPtr comment = config::parseAnswer(rcode, status);
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+ ASSERT_EQ(0, rcode);
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+}
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+
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+void
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+RebindTest::requestLease(const int config_index, const int subnets_num,
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+ Dhcp6Client& client) {
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+ // Configure the server.
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+ configure(REBIND_CONFIGS[config_index], *client.getServer());
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+ // Make sure we ended-up having expected number of subnets configured.
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+ const Subnet6Collection* subnets = CfgMgr::instance().getSubnets6();
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+ ASSERT_EQ(subnets_num, subnets->size());
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+ // Do the actual 4-way exchange.
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+ ASSERT_NO_THROW(client.doSARR());
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+ // Simulate aging of leases, by moving their cltt_ back by 1000s.
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+ client.fastFwdTime(1000);
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+ // Make sure that we have obtained a lease that belongs to one of the
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+ // subnets.
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+ ASSERT_EQ(1, client.getLeaseNum());
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+ Lease6 lease_client = client.getLease(0);
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+ ASSERT_TRUE(CfgMgr::instance().getSubnet6(lease_client.addr_,
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+ ClientClasses()));
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+ // Check that the client's lease matches the information on the server
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+ // side.
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+ Lease6Ptr lease_server = checkLease(lease_client);
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+ ASSERT_TRUE(lease_server);
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+ // And that status code was OK.
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+ EXPECT_EQ(STATUS_Success, client.getStatusCode(0));
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+}
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+
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+TEST_F(RebindTest, directClient) {
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+ Dhcp6Client client;
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+ // Configure client to request IA_NA.
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+ client.useNA();
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+ // Make 4-way exchange to get the lease.
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+ ASSERT_NO_FATAL_FAILURE(requestLease(0, 2, client));
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+ // Keep the client's lease for future reference.
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+ Lease6 lease_client = client.getLease(0);
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+ // Send Rebind message to the server.
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+ ASSERT_NO_THROW(client.doRebind());
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+ // The client should still have one lease which belong to one of the
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+ // subnets.
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+ ASSERT_EQ(1, client.getLeaseNum());
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+ Lease6 lease_client2 = client.getLease(0);
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+ ASSERT_TRUE(CfgMgr::instance().getSubnet6(lease_client2.addr_,
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+ ClientClasses()));
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+ // The client's lease should have been extended. The client will
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+ // update the cltt to current time when the lease gets extended.
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+ ASSERT_GE(lease_client2.cltt_ - lease_client.cltt_, 1000);
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+ // Make sure, that the client's lease matches the lease held by the
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+ // server.
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+ Lease6Ptr lease_server2 = checkLease(lease_client2);
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+ EXPECT_TRUE(lease_server2);
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+}
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+
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+TEST_F(RebindTest, directClientChangingSubnet) {
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+ Dhcp6Client client;
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+ // Configure client to request IA_NA.
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+ client.useNA();
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+ // Make 4-way exchange to get the lease.
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+ ASSERT_NO_FATAL_FAILURE(requestLease(0, 2, client));
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+ // Keep the client's lease for future reference.
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+ Lease6 lease_client = client.getLease(0);
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+ // Reconfigure the server so as the new subnet is served on the
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+ // client's interface. Note that there will also be a new subnet
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+ // id assigned to the subnet on this interface.
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+ configure(REBIND_CONFIGS[1], *client.getServer());
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+ // Try to rebind, using the address that the client had acquired using
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+ // previous server configuration.
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+ ASSERT_NO_THROW(client.doRebind());
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+ // We are expecting that the server didn't extend the lease because
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+ // the address that client is using doesn't match the new subnet.
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+ // But, the client still has an old lease.
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+ ASSERT_EQ(1, client.getLeaseNum());
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+ Lease6 lease_client2 = client.getLease(0);
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+ // The current lease should be exactly the same as old lease,
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+ // because server shouldn't have extended.
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+ EXPECT_TRUE(lease_client == lease_client2);
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+ // Make sure, that the lease that client has, is matching the lease
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+ // in the lease database.
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+ Lease6Ptr lease_server2 = checkLease(lease_client2);
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+ EXPECT_TRUE(lease_server2);
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+ // Client should have received NoBinding status code.
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+ EXPECT_EQ(STATUS_NoBinding, client.getStatusCode(0));
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+
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+}
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+
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+TEST_F(RebindTest, directClientChangingIAID) {
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+ Dhcp6Client client;
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+ // Configure client to request IA_NA.
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+ client.useNA();
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+ // Make 4-way exchange to get the lease.
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+ ASSERT_NO_FATAL_FAILURE(requestLease(0, 2, client));
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+ // Keep the client's lease for future reference.
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+ Lease6 lease_client = client.getLease(0);
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+ // Modify the IAID of the lease record that client stores. By adding
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+ // one to IAID we guarantee that the IAID will change.
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+ ++client.config_.leases_[0].lease_.iaid_;
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+ // Try to Rebind. Note that client will use a different IAID (which
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+ // is not matching IAID that server retains for the client). Server
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+ // should not find the lease that client is trying to extend and
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+ // should return NoBinding.
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+ ASSERT_NO_THROW(client.doRebind());
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+ // The lease obtained in 4-way exchange should not change after the Rebind
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+ // attempt.
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+ Lease6Ptr lease_server2 = checkLease(lease_client);
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+ EXPECT_TRUE(lease_server2);
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+ // The Status code returned to the client, should be NoBinding.
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+ EXPECT_EQ(STATUS_NoBinding, client.getStatusCode(0));
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+
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+}
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+
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+TEST_F(RebindTest, directClientLostLease) {
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+ Dhcp6Client client;
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+ // Configure client to request IA_NA.
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+ client.useNA();
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+ // Make 4-way exchange to get the lease.
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+ ASSERT_NO_FATAL_FAILURE(requestLease(0, 2, client));
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+ // Keep the client's lease for future reference.
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+ Lease6 lease_client = client.getLease(0);
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+ // The lease has been acquired. Now, let's explicitly remove it from the
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+ // lease database.
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+ LeaseMgrFactory::instance().deleteLease(lease_client.addr_);
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+ // An attempt to Rebind should fail. The lease should not be found by
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+ // the server and the server should return NoBinding status code.
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+ ASSERT_NO_THROW(client.doRebind());
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+ ASSERT_EQ(1, client.getLeaseNum());
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+ EXPECT_EQ(STATUS_NoBinding, client.getStatusCode(0));
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+}
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+
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+TEST_F(RebindTest, relayedClient) {
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+ Dhcp6Client client;
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+ // Configure client to request IA_NA.
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+ client.useNA();
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+ // Configure DHCPv6 client to simulate sending the message through a relay
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+ // agent. The default link-addr is 3001:1::1. This address should be used
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+ // by the server to pick the suitable subnet.
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+ client.useRelay();
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+ // Make 4-way exchange to get the lease. Pick the configuration #2 as it
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+ // specifies the subnet for the relay agent's link address.
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+ ASSERT_NO_FATAL_FAILURE(requestLease(2, 2, client));
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+ // Keep the client's lease for future reference.
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+ Lease6 lease_client = client.getLease(0);
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+ // Send Rebind message to the server.
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+ ASSERT_NO_THROW(client.doRebind());
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+ // The client should still have one lease which belongs to one of the
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+ // subnets.
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+ ASSERT_EQ(1, client.getLeaseNum());
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+ Lease6 lease_client2 = client.getLease(0);
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+ ASSERT_TRUE(CfgMgr::instance().getSubnet6(lease_client2.addr_,
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+ ClientClasses()));
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+ // The client's lease should have been extended. The client will
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+ // update the cltt to current time when the lease gets extended.
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+ ASSERT_GE(lease_client2.cltt_ - lease_client.cltt_, 1000);
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+ // Make sure, that the client's lease matches the lease held by the
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+ // server.
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+ Lease6Ptr lease_server2 = checkLease(lease_client2);
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+ EXPECT_TRUE(lease_server2);
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+}
|
|
|
+
|
|
|
+TEST_F(RebindTest, relayedClientChangingSubnet) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_NA.
|
|
|
+ client.useNA();
|
|
|
+ // Configure DHCPv6 client to simulate sending the message through a relay
|
|
|
+ // agent. The default link-addr is 3001:1::1. This address should be used
|
|
|
+ // by the server to pick the suitable subnet.
|
|
|
+ client.useRelay();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(2, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // Reconfigure the server so as the new subnet is served on the
|
|
|
+ // client's interface. Note that there will also be a new subnet
|
|
|
+ // id assigned to the subnet on this interface.
|
|
|
+ configure(REBIND_CONFIGS[3], *client.getServer());
|
|
|
+ // Update relay link address to match the new subnet.
|
|
|
+ client.relay_link_addr_ = IOAddress("3001:4::1");
|
|
|
+ // Try to rebind, using the address that the client had acquired using
|
|
|
+ // previous server configuration.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ // We are expecting that the server didn't extend the lease because
|
|
|
+ // the address that client is using doesn't match the new subnet.
|
|
|
+ // But, the client still has an old lease.
|
|
|
+ ASSERT_EQ(1, client.getLeaseNum());
|
|
|
+ Lease6 lease_client2 = client.getLease(0);
|
|
|
+ // The current lease should be exactly the same as old lease,
|
|
|
+ // because server shouldn't have extended.
|
|
|
+ EXPECT_TRUE(lease_client == lease_client2);
|
|
|
+ // Make sure, that the lease that client has, is matching the lease
|
|
|
+ // in the lease database.
|
|
|
+ Lease6Ptr lease_server2 = checkLease(lease_client2);
|
|
|
+ EXPECT_TRUE(lease_server2);
|
|
|
+ // Client should have received NoBinding status code.
|
|
|
+ EXPECT_EQ(STATUS_NoBinding, client.getStatusCode(0));
|
|
|
+
|
|
|
+}
|
|
|
+
|
|
|
+TEST_F(RebindTest, relayedClientChangingIAID) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_NA.
|
|
|
+ client.useNA();
|
|
|
+ // Configure DHCPv6 client to simulate sending the message through a relay
|
|
|
+ // agent. The default link-addr is 3001:1::1. This address should be used
|
|
|
+ // by the server to pick the suitable subnet.
|
|
|
+ client.useRelay();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(2, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // Modify the IAID of the lease record that client stores. By adding
|
|
|
+ // one to IAID we guarantee that the IAID will change.
|
|
|
+ ++client.config_.leases_[0].lease_.iaid_;
|
|
|
+ // Try to Rebind. Note that client will use a different IAID (which
|
|
|
+ // is not matching IAID that server retains for the client). Server
|
|
|
+ // should not find the lease that client is trying to extend and
|
|
|
+ // should return NoBinding.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ // The lease obtained in 4-way exchange should not change after the Rebind
|
|
|
+ // attempt.
|
|
|
+ Lease6Ptr lease_server2 = checkLease(lease_client);
|
|
|
+ EXPECT_TRUE(lease_server2);
|
|
|
+ // The Status code returned to the client, should be NoBinding.
|
|
|
+ EXPECT_EQ(STATUS_NoBinding, client.getStatusCode(0));
|
|
|
+
|
|
|
+}
|
|
|
+
|
|
|
+TEST_F(RebindTest, relayedClientLostLease) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_NA.
|
|
|
+ client.useNA();
|
|
|
+ // Configure DHCPv6 client to simulate sending the message through a relay
|
|
|
+ // agent. The default link-addr is 3001:1::1. This address should be used
|
|
|
+ // by the server to pick the suitable subnet.
|
|
|
+ client.useRelay();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(2, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // The lease has been acquired. Now, let's explicitly remove it from the
|
|
|
+ // lease database.
|
|
|
+ LeaseMgrFactory::instance().deleteLease(lease_client.addr_);
|
|
|
+ // An attempt to Rebind should fail. The lease should not be found by
|
|
|
+ // the server and the server should return NoBinding status code.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ ASSERT_EQ(1, client.getLeaseNum());
|
|
|
+ EXPECT_EQ(STATUS_NoBinding, client.getStatusCode(0));
|
|
|
+}
|
|
|
+
|
|
|
+TEST_F(RebindTest, directClientPD) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_PD.
|
|
|
+ client.usePD();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(5, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // Send Rebind message to the server.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ // The client should still have one lease which belong to one of the
|
|
|
+ // subnets.
|
|
|
+ ASSERT_EQ(1, client.getLeaseNum());
|
|
|
+ Lease6 lease_client2 = client.getLease(0);
|
|
|
+ ASSERT_TRUE(CfgMgr::instance().getSubnet6(lease_client2.addr_,
|
|
|
+ ClientClasses()));
|
|
|
+ // The client's lease should have been extended. The client will
|
|
|
+ // update the cltt to current time when the lease gets extended.
|
|
|
+ ASSERT_GE(lease_client2.cltt_ - lease_client.cltt_, 1000);
|
|
|
+ // Make sure, that the client's lease matches the lease held by the
|
|
|
+ // server.
|
|
|
+ Lease6Ptr lease_server2 = checkLease(lease_client2);
|
|
|
+ EXPECT_TRUE(lease_server2);
|
|
|
+}
|
|
|
+
|
|
|
+TEST_F(RebindTest, directClientPDChangingSubnet) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_PD.
|
|
|
+ client.usePD();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(5, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // Reconfigure the server so as the new subnet is served on the
|
|
|
+ // client's interface. Note that there will also be a new subnet
|
|
|
+ // id assigned to the subnet on this interface.
|
|
|
+ configure(REBIND_CONFIGS[6], *client.getServer());
|
|
|
+ // Try to rebind, using the address that the client had acquired using
|
|
|
+ // previous server configuration.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ // Make sure that the server has discarded client's message. In such case,
|
|
|
+ // the message sent back to the client should be NULL.
|
|
|
+ EXPECT_FALSE(client.getContext().response_)
|
|
|
+ << "The server responded to the Rebind message, while it should have"
|
|
|
+ " discarded it because there is no binding for the client.";
|
|
|
+ // We are expecting that the server didn't extend the lease because
|
|
|
+ // the address that client is using doesn't match the new subnet.
|
|
|
+ // But, the client still has an old lease.
|
|
|
+ ASSERT_EQ(1, client.getLeaseNum());
|
|
|
+ Lease6 lease_client2 = client.getLease(0);
|
|
|
+ // The current lease should be exactly the same as old lease,
|
|
|
+ // because server shouldn't have extended.
|
|
|
+ EXPECT_TRUE(lease_client == lease_client2);
|
|
|
+ // Make sure, that the lease that client has, is matching the lease
|
|
|
+ // in the lease database.
|
|
|
+ Lease6Ptr lease_server2 = checkLease(lease_client2);
|
|
|
+ EXPECT_TRUE(lease_server2);
|
|
|
+}
|
|
|
+
|
|
|
+TEST_F(RebindTest, directClientPDChangingIAID) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_PD.
|
|
|
+ client.usePD();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(5, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // Modify the IAID of the lease record that client stores. By adding
|
|
|
+ // one to IAID we guarantee that the IAID will change.
|
|
|
+ ++client.config_.leases_[0].lease_.iaid_;
|
|
|
+ // Try to Rebind. Note that client will use a different IAID (which
|
|
|
+ // is not matching IAID that server retains for the client). This is
|
|
|
+ // a condition described in RFC3633, section 12.2 as the server finds
|
|
|
+ // no binding for the client. It is an indication that some other
|
|
|
+ // server has probably allocated the lease for the client. Hence, our
|
|
|
+ // server should discard the message.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ // Make sure that the server has discarded client's message. In such case,
|
|
|
+ // the message sent back to the client should be NULL.
|
|
|
+ EXPECT_FALSE(client.getContext().response_)
|
|
|
+ << "The server responded to the Rebind message, while it should have"
|
|
|
+ " discarded it because there is no binding for the client.";
|
|
|
+ // Check that server still has the same lease.
|
|
|
+ Lease6Ptr lease_server = checkLease(lease_client);
|
|
|
+ EXPECT_TRUE(lease_server);
|
|
|
+}
|
|
|
+
|
|
|
+TEST_F(RebindTest, directClientPDChangingPrefix) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_PD.
|
|
|
+ client.usePD();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(5, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // Modify the Prefix of the lease record that client stores. The server
|
|
|
+ // should check that the prefix is invalid (hasn't been allocated for
|
|
|
+ // the particular IAID).
|
|
|
+ client.config_.leases_[0].lease_.addr_ = IOAddress("2001:db8:1:10::1");
|
|
|
+ // Try to Rebind. The client will use correct IAID but will specify a
|
|
|
+ // wrong prefix. The server will discover that the client has a binding
|
|
|
+ // but the prefix will not match. According to the RFC3633, section 12.2.
|
|
|
+ // the server has to return the lease with lifetimes set to 0, when there
|
|
|
+ // is a binding for the client but the prefix doesn't match.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ // Make sure that the server has discarded client's message. In such case,
|
|
|
+ // the message sent back to the client should be NULL.
|
|
|
+ EXPECT_TRUE(client.getContext().response_)
|
|
|
+ << "The server discarded the Rebind message, while it should have"
|
|
|
+ " sent a response indicating that the client should stop using the"
|
|
|
+ " lease, by setting lifetime values to 0.";
|
|
|
+ // Get the client's lease.
|
|
|
+ ASSERT_EQ(1, client.getLeaseNum());
|
|
|
+ Lease6 lease_client2 = client.getLease(0);
|
|
|
+ // The lifetimes should be set to 0, as an explicit notification to the
|
|
|
+ // client to stop using invalid prefix.
|
|
|
+ EXPECT_EQ(0, lease_client2.valid_lft_);
|
|
|
+ EXPECT_EQ(0, lease_client2.preferred_lft_);
|
|
|
+ // Check that server still has the same lease.
|
|
|
+ Lease6Ptr lease_server = checkLease(lease_client);
|
|
|
+ EXPECT_TRUE(lease_server);
|
|
|
+}
|
|
|
+
|
|
|
+/// @todo Extend PD tests for relayed messages.
|
|
|
+
|
|
|
+// This test checks that the Rebind message is discarded by the server if it
|
|
|
+// has been sent to unicast address (RFC3315, section 15).
|
|
|
+TEST_F(RebindTest, unicast) {
|
|
|
+ Dhcp6Client client;
|
|
|
+ // Configure client to request IA_NA.
|
|
|
+ client.useNA();
|
|
|
+ // Make 4-way exchange to get the lease.
|
|
|
+ ASSERT_NO_FATAL_FAILURE(requestLease(0, 2, client));
|
|
|
+ // Keep the client's lease for future reference.
|
|
|
+ Lease6 lease_client = client.getLease(0);
|
|
|
+ // Set the unicast destionation address for the Rebind message.
|
|
|
+ // The Rebind should be discarded when sent to unicast address,
|
|
|
+ // according to section 15 of RFC3315.
|
|
|
+ client.setDestAddress(IOAddress("2001:db8:1::1"));
|
|
|
+ // Send the Rebind message to a unicast address.
|
|
|
+ ASSERT_NO_THROW(client.doRebind());
|
|
|
+ // The client's lease should remain with no change (shouldn't be extended)
|
|
|
+ // because server is supposed to drop the message sent to a unicast address.
|
|
|
+ ASSERT_EQ(1, client.getLeaseNum());
|
|
|
+ Lease6 lease_client2 = client.getLease(0);
|
|
|
+ ASSERT_TRUE(lease_client2 == lease_client);
|
|
|
+ // Check that server still has the lease.
|
|
|
+ Lease6Ptr lease_server2 = checkLease(lease_client2);
|
|
|
+ EXPECT_TRUE(lease_server2);
|
|
|
+ // Make sure that the server has discarded client's message. In such case,
|
|
|
+ // the message sent back to the client should be NULL.
|
|
|
+ EXPECT_FALSE(client.getContext().response_);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+} // end of anonymous namespace
|
Marcin Siodelski