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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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+
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+#include <exceptions/exceptions.h>
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+#include <dhcp/option_vendor_class.h>
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+#include <util/buffer.h>
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+#include <gtest/gtest.h>
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+
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+using namespace isc;
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+using namespace isc::dhcp;
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+using namespace isc::util;
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+
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+namespace {
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+
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+// This test checks that the DHCPv4 option constructor sets the default
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+// properties to the expected values. This constructor should add an
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+// empty opaque data tuple (it is essentially the same as adding a 1-byte
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+// long field which carries a value of 0).
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+TEST(OptionVendorClass, constructor4) {
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+ OptionVendorClass vendor_class(Option::V4, 1234);
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+ EXPECT_EQ(1234, vendor_class.getVendorId());
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+ // Option length is 1 byte for header + 1 byte for option size +
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+ // 4 bytes of enterprise id + 1 byte for opaque data.
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+ EXPECT_EQ(7, vendor_class.len());
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+ // There should be one empty tuple.
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+ ASSERT_EQ(1, vendor_class.getTuplesNum());
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+ EXPECT_EQ(0, vendor_class.getTuple(0).getLength());
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+}
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+
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+// This test checks that the DHCPv6 option constructor sets the default
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+// properties to the expected values.
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+TEST(OptionVendorClass, constructor6) {
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+ OptionVendorClass vendor_class(Option::V6, 2345);
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+ EXPECT_EQ(2345, vendor_class.getVendorId());
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+ // Option length is 2 bytes for option code + 2 bytes for option size +
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+ // 4 bytes of enterprise id.
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+ EXPECT_EQ(8, vendor_class.len());
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+ // There should be no tuples.
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+ EXPECT_EQ(0, vendor_class.getTuplesNum());
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+}
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+
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+// This test verifies that it is possible to append the opaque data tuple
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+// to the option and then retrieve it.
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+TEST(OptionVendorClass, addTuple) {
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+ OptionVendorClass vendor_class(Option::V6, 2345);
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+ // Initially there should be no tuples (for DHCPv6).
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+ ASSERT_EQ(0, vendor_class.getTuplesNum());
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+ // Create a new tuple and add it to the option.
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+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_2_BYTES);
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+ tuple = "xyz";
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+ vendor_class.addTuple(tuple);
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+ // The option should now hold one tuple.
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+ ASSERT_EQ(1, vendor_class.getTuplesNum());
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+ EXPECT_EQ("xyz", vendor_class.getTuple(0).getText());
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+ // Add another tuple.
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+ tuple = "abc";
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+ vendor_class.addTuple(tuple);
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+ // The option should now hold exactly two tuples in the order in which
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+ // they were added.
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+ ASSERT_EQ(2, vendor_class.getTuplesNum());
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+ EXPECT_EQ("xyz", vendor_class.getTuple(0).getText());
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+ EXPECT_EQ("abc", vendor_class.getTuple(1).getText());
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+
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+ // Check that hasTuple correctly identifies existing tuples.
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+ EXPECT_TRUE(vendor_class.hasTuple("xyz"));
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+ EXPECT_TRUE(vendor_class.hasTuple("abc"));
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+ EXPECT_FALSE(vendor_class.hasTuple("other"));
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+
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+ // Attempt to add the tuple with 1 byte long length field should fail
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+ // for DHCPv6 option.
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+ OpaqueDataTuple tuple2(OpaqueDataTuple::LENGTH_1_BYTE);
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+ EXPECT_THROW(vendor_class.addTuple(tuple2), isc::BadValue);
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+}
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+
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+// This test checks that it is possible to replace existing tuple.
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+TEST(OptionVendorClass, setTuple) {
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+ OptionVendorClass vendor_class(Option::V4, 1234);
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+ // The DHCPv4 option should carry one empty tuple.
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+ ASSERT_EQ(1, vendor_class.getTuplesNum());
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+ ASSERT_TRUE(vendor_class.getTuple(0).getText().empty());
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+ // Replace the empty tuple with non-empty one.
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+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_1_BYTE);
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+ tuple = "xyz";
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+ ASSERT_NO_THROW(vendor_class.setTuple(0, tuple));
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+ // There should be one tuple with updated data.
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+ ASSERT_EQ(1, vendor_class.getTuplesNum());
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+ EXPECT_EQ("xyz", vendor_class.getTuple(0).getText());
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+
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+ // Add another one.
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+ tuple = "abc";
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+ vendor_class.addTuple(tuple);
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+ ASSERT_EQ(2, vendor_class.getTuplesNum());
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+ ASSERT_EQ("abc", vendor_class.getTuple(1).getText());
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+
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+ // Try to replace them with new tuples.
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+ tuple = "new_xyz";
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+ ASSERT_NO_THROW(vendor_class.setTuple(0, tuple));
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+ ASSERT_EQ(2, vendor_class.getTuplesNum());
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+ EXPECT_EQ("new_xyz", vendor_class.getTuple(0).getText());
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+
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+ tuple = "new_abc";
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+ ASSERT_NO_THROW(vendor_class.setTuple(1, tuple));
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+ ASSERT_EQ(2, vendor_class.getTuplesNum());
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+ EXPECT_EQ("new_abc", vendor_class.getTuple(1).getText());
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+
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+ // For out of range position, exception should be thrown.
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+ tuple = "foo";
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+ EXPECT_THROW(vendor_class.setTuple(2, tuple), isc::OutOfRange);
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+
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+ // Attempt to add the tuple with 2 byte long length field should fail
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+ // for DHCPv4 option.
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+ OpaqueDataTuple tuple2(OpaqueDataTuple::LENGTH_2_BYTES);
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+ EXPECT_THROW(vendor_class.addTuple(tuple2), isc::BadValue);
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+}
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+
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+// Check that the returned length of the DHCPv4 option is correct.
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+TEST(OptionVendorClass, len4) {
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+ OptionVendorClass vendor_class(Option::V4, 1234);
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+ ASSERT_EQ(7, vendor_class.len());
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+ // Replace the default empty tuple.
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+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_1_BYTE);
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+ tuple = "xyz";
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+ ASSERT_NO_THROW(vendor_class.setTuple(0, tuple));
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+ // The total length should get increased by the size of 'xyz'.
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+ EXPECT_EQ(10, vendor_class.len());
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+ // Add another tuple.
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+ tuple = "abc";
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+ vendor_class.addTuple(tuple);
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+ // The total size now grows by the additional enterprise id and the
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+ // 1 byte of the tuple length field and 3 bytes of 'abc'.
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+ EXPECT_EQ(18, vendor_class.len());
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+}
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+
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+// Check that the returned length of the DHCPv6 option is correct.
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+TEST(OptionVendorClass, len6) {
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+ OptionVendorClass vendor_class(Option::V6, 1234);
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+ ASSERT_EQ(8, vendor_class.len());
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+ // Add first tuple.
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+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_2_BYTES);
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+ tuple = "xyz";
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+ ASSERT_NO_THROW(vendor_class.addTuple(tuple));
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+ // The total length grows by 2 bytes of the length field and 3 bytes
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+ // consumed by 'xyz'.
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+ EXPECT_EQ(13, vendor_class.len());
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+ // Add another tuple and check that the total size gets increased.
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+ tuple = "abc";
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+ vendor_class.addTuple(tuple);
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+ EXPECT_EQ(18, vendor_class.len());
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+}
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+
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+// Check that the option is rendered to the buffer in wire format.
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+TEST(OptionVendorClass, pack4) {
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+ OptionVendorClass vendor_class(Option::V4, 1234);
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+ ASSERT_EQ(1, vendor_class.getTuplesNum());
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+ // By default, there is an empty tuple in the option. Let's replace
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+ // it with the tuple with some data.
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+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_1_BYTE);
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+ tuple = "Hello world";
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+ vendor_class.setTuple(0, tuple);
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+ // And add another tuple so as resulting option is a bit more complex.
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+ tuple = "foo";
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+ vendor_class.addTuple(tuple);
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+
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+ // Render the data to the buffer.
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+ OutputBuffer buf(10);
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+ ASSERT_NO_THROW(vendor_class.pack(buf));
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+ ASSERT_EQ(26, buf.getLength());
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+
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+ // Prepare reference data.
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+ const uint8_t ref[] = {
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+ 0x7C, 0x18, // option 124, length 24
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 0x0B, // tuple length is 11
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+ 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, // Hello<space>
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+ 0x77, 0x6F, 0x72, 0x6C, 0x64, // world
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 3, // tuple length is 3
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+ 0x66, 0x6F, 0x6F // foo
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+ };
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+ // Compare the buffer with reference data.
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+ EXPECT_EQ(0, memcmp(static_cast<const void*>(ref),
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+ static_cast<const void*>(buf.getData()), 26));
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+}
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+
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+// Check that the DHCPv6 option is rendered to the buffer in wire format.
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+TEST(OptionVendorClass, pack6) {
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+ OptionVendorClass vendor_class(Option::V6, 1234);
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+ ASSERT_EQ(0, vendor_class.getTuplesNum());
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+ // Add tuple.
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+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_2_BYTES);
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+ tuple = "Hello world";
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+ vendor_class.addTuple(tuple);
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+ // And add another tuple so as resulting option is a bit more complex.
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+ tuple = "foo";
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+ vendor_class.addTuple(tuple);
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+
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+ // Render the data to the buffer.
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+ OutputBuffer buf(10);
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+ ASSERT_NO_THROW(vendor_class.pack(buf));
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+ ASSERT_EQ(26, buf.getLength());
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+
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+ // Prepare reference data.
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+ const uint8_t ref[] = {
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+ 0x00, 0x10, 0x00, 0x16, // option 16, length 22
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+ 0x00, 0x00, 0x04, 0xD2, // enterprise id 1234
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+ 0x00, 0x0B, // tuple length is 11
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+ 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, // Hello<space>
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+ 0x77, 0x6F, 0x72, 0x6C, 0x64, // world
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+ 0x00, 0x03, // tuple length is 3
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+ 0x66, 0x6F, 0x6F // foo
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+ };
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+ // Compare the buffer with reference data.
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+ EXPECT_EQ(0, memcmp(static_cast<const void*>(ref),
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+ static_cast<const void*>(buf.getData()),
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+ buf.getLength()));
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+}
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+
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+// This function checks that the DHCPv4 option with two opaque data tuples
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+// is parsed correctly.
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+TEST(OptionVendorClass, unpack4) {
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+ // Prepare data to decode.
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+ const uint8_t buf_data[] = {
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 0x0B, // tuple length is 11
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+ 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, // Hello<space>
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+ 0x77, 0x6F, 0x72, 0x6C, 0x64, // world
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 3, // tuple length is 3
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+ 0x66, 0x6F, 0x6F // foo
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+ };
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+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
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+
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+ OptionVendorClassPtr vendor_class;
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+ ASSERT_NO_THROW(
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+ vendor_class = OptionVendorClassPtr(new OptionVendorClass(Option::V4,
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+ buf.begin(),
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+ buf.end()));
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+ );
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+ EXPECT_EQ(DHO_VIVCO_SUBOPTIONS, vendor_class->getType());
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+ EXPECT_EQ(1234, vendor_class->getVendorId());
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+ ASSERT_EQ(2, vendor_class->getTuplesNum());
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+ EXPECT_EQ("Hello world", vendor_class->getTuple(0).getText());
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+ EXPECT_EQ("foo", vendor_class->getTuple(1).getText());
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+}
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+
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+// This function checks that the DHCPv4 option with two opaque data tuples
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+// is parsed correctly.
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+TEST(OptionVendorClass, unpack6) {
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+ // Prepare data to decode.
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+ const uint8_t buf_data[] = {
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 0x00, 0x0B, // tuple length is 11
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+ 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, // Hello<space>
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+ 0x77, 0x6F, 0x72, 0x6C, 0x64, // world
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+ 0x00, 0x03, // tuple length is 3
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+ 0x66, 0x6F, 0x6F // foo
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+ };
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+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
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+
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+ OptionVendorClassPtr vendor_class;
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+ ASSERT_NO_THROW(
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+ vendor_class = OptionVendorClassPtr(new OptionVendorClass(Option::V6,
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+ buf.begin(),
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+ buf.end()));
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+ );
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+ EXPECT_EQ(D6O_VENDOR_CLASS, vendor_class->getType());
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+ EXPECT_EQ(1234, vendor_class->getVendorId());
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+ ASSERT_EQ(2, vendor_class->getTuplesNum());
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+ EXPECT_EQ("Hello world", vendor_class->getTuple(0).getText());
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+ EXPECT_EQ("foo", vendor_class->getTuple(1).getText());
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+}
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+
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+
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+// This test checks that the DHCPv4 option with opaque data of size 0
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+// is correctly parsed.
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+TEST(OptionVendorClass, unpack4EmptyTuple) {
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+ // Prepare data to decode.
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+ const uint8_t buf_data[] = {
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 0x00, // tuple length is 0
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+ };
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+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
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+
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+ OptionVendorClassPtr vendor_class;
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+ ASSERT_NO_THROW(
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+ vendor_class = OptionVendorClassPtr(new OptionVendorClass(Option::V4,
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+ buf.begin(),
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+ buf.end()));
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+ );
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+ EXPECT_EQ(DHO_VIVCO_SUBOPTIONS, vendor_class->getType());
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+ EXPECT_EQ(1234, vendor_class->getVendorId());
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+ ASSERT_EQ(1, vendor_class->getTuplesNum());
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+ EXPECT_TRUE(vendor_class->getTuple(0).getText().empty());
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+}
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+
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+// This test checks that the DHCPv6 option with opaque data of size 0
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+// is correctly parsed.
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+TEST(OptionVendorClass, unpack6EmptyTuple) {
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+ // Prepare data to decode.
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+ const uint8_t buf_data[] = {
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 0x00, 0x00 // tuple length is 0
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+ };
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+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
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+
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+ OptionVendorClassPtr vendor_class;
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+ ASSERT_NO_THROW(
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+ vendor_class = OptionVendorClassPtr(new OptionVendorClass(Option::V6,
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+ buf.begin(),
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+ buf.end()));
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+ );
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+ EXPECT_EQ(D6O_VENDOR_CLASS, vendor_class->getType());
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+ EXPECT_EQ(1234, vendor_class->getVendorId());
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+ ASSERT_EQ(1, vendor_class->getTuplesNum());
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+ EXPECT_TRUE(vendor_class->getTuple(0).getText().empty());
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+}
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+
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+// This test checks that exception is thrown when parsing truncated DHCPv4
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+// V-I Vendor Class option.
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+TEST(OptionVendorClass, unpack4Truncated) {
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+ // Prepare data to decode.
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+ const uint8_t buf_data[] = {
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 0x0B, // tuple length is 11
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+ 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, // Hello<space>
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+ 0x77, 0x6F, 0x72, 0x6C, 0x64, // world
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ };
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+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
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+
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+ EXPECT_THROW(OptionVendorClass (Option::V4, buf.begin(), buf.end()),
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+ isc::OutOfRange);
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+}
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+
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+// This test checks that exception is thrown when parsing truncated DHCPv6
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+// Vendor Class option.
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+TEST(OptionVendorClass, unpack6Truncated) {
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+ // Prepare data to decode.
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+ const uint8_t buf_data[] = {
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+ 0, 0, 0x4, 0xD2, // enterprise id 1234
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+ 0x00, 0x0B, // tuple length is 11
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+ 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, // Hello<space>
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+ 0x77, 0x6F, 0x72, 0x6C // worl (truncated d!)
|
|
|
+ };
|
|
|
+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
|
|
|
+
|
|
|
+ EXPECT_THROW(OptionVendorClass (Option::V6, buf.begin(), buf.end()),
|
|
|
+ isc::dhcp::OpaqueDataTupleError);
|
|
|
+}
|
|
|
+
|
|
|
+// This test checks that exception is thrown when parsing DHCPv4 V-I Vendor
|
|
|
+// Class option which doesn't have opaque data length. This test is different
|
|
|
+// from the corresponding test for v6 in that, the v4 test expects that
|
|
|
+// exception is thrown when parsing DHCPv4 option without data-len field
|
|
|
+// (has no tuples), whereas for DHCPv6 option it is perfectly ok that
|
|
|
+// option has no tuples (see class constructor).
|
|
|
+TEST(OptionVendorClass, unpack4NoTuple) {
|
|
|
+ // Prepare data to decode.
|
|
|
+ const uint8_t buf_data[] = {
|
|
|
+ 0, 0, 0x4, 0xD2 // enterprise id 1234
|
|
|
+ };
|
|
|
+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
|
|
|
+
|
|
|
+ ASSERT_THROW(OptionVendorClass (Option::V4, buf.begin(), buf.end()),
|
|
|
+ isc::OutOfRange);
|
|
|
+}
|
|
|
+
|
|
|
+// This test checks that the DHCPv6 Vendor Class option containing no opaque
|
|
|
+// data is parsed correctly. This test is different from the corresponding
|
|
|
+// test for v4 in that, the v6 test checks that the option parsing succeeds
|
|
|
+// when option has no opaque data tuples, whereas the v4 test expects that
|
|
|
+// parsing fails for DHCPv4 option which doesn't have opaque-data (see
|
|
|
+// class constructor).
|
|
|
+TEST(OptionVendorClass, unpack6NoTuple) {
|
|
|
+ // Prepare data to decode.
|
|
|
+ const uint8_t buf_data[] = {
|
|
|
+ 0, 0, 0x4, 0xD2 // enterprise id 1234
|
|
|
+ };
|
|
|
+ OptionBuffer buf(buf_data, buf_data + sizeof(buf_data));
|
|
|
+
|
|
|
+ OptionVendorClassPtr vendor_class;
|
|
|
+ ASSERT_NO_THROW(
|
|
|
+ vendor_class = OptionVendorClassPtr(new OptionVendorClass(Option::V6,
|
|
|
+ buf.begin(),
|
|
|
+ buf.end()));
|
|
|
+ );
|
|
|
+ EXPECT_EQ(D6O_VENDOR_CLASS, vendor_class->getType());
|
|
|
+ EXPECT_EQ(1234, vendor_class->getVendorId());
|
|
|
+ EXPECT_EQ(0, vendor_class->getTuplesNum());
|
|
|
+}
|
|
|
+
|
|
|
+// Verifies correctness of the text representation of the DHCPv4 option.
|
|
|
+TEST(OptionVendorClass, toText4) {
|
|
|
+ OptionVendorClass vendor_class(Option::V4, 1234);
|
|
|
+ ASSERT_EQ(1, vendor_class.getTuplesNum());
|
|
|
+ // By default, there is an empty tuple in the option. Let's replace
|
|
|
+ // it with the tuple with some data.
|
|
|
+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_1_BYTE);
|
|
|
+ tuple = "Hello world";
|
|
|
+ vendor_class.setTuple(0, tuple);
|
|
|
+ // And add another tuple so as resulting option is a bit more complex.
|
|
|
+ tuple = "foo";
|
|
|
+ vendor_class.addTuple(tuple);
|
|
|
+ // Check that the text representation of the option is as expected.
|
|
|
+ EXPECT_EQ("type=124, len=24, enterprise id=0x4d2,"
|
|
|
+ " data-len0=11, vendor-class-data0='Hello world',"
|
|
|
+ " enterprise id=0x4d2, data-len1=3, vendor-class-data1='foo'",
|
|
|
+ vendor_class.toText());
|
|
|
+
|
|
|
+ // Check that indentation works.
|
|
|
+ EXPECT_EQ(" type=124, len=24, enterprise id=0x4d2,"
|
|
|
+ " data-len0=11, vendor-class-data0='Hello world',"
|
|
|
+ " enterprise id=0x4d2, data-len1=3, vendor-class-data1='foo'",
|
|
|
+ vendor_class.toText(3));
|
|
|
+}
|
|
|
+
|
|
|
+// Verifies correctness of the text representation of the DHCPv4 option.
|
|
|
+TEST(OptionVendorClass, toText6) {
|
|
|
+ OptionVendorClass vendor_class(Option::V6, 1234);
|
|
|
+ ASSERT_EQ(0, vendor_class.getTuplesNum());
|
|
|
+ // By default, there is an empty tuple in the option. Let's replace
|
|
|
+ // it with the tuple with some data.
|
|
|
+ OpaqueDataTuple tuple(OpaqueDataTuple::LENGTH_2_BYTES);
|
|
|
+ tuple = "Hello world";
|
|
|
+ vendor_class.addTuple(tuple);
|
|
|
+ // And add another tuple so as resulting option is a bit more complex.
|
|
|
+ tuple = "foo";
|
|
|
+ vendor_class.addTuple(tuple);
|
|
|
+ // Check that the text representation of the option is as expected.
|
|
|
+ EXPECT_EQ("type=16, len=22, enterprise id=0x4d2,"
|
|
|
+ " data-len0=11, vendor-class-data0='Hello world',"
|
|
|
+ " data-len1=3, vendor-class-data1='foo'",
|
|
|
+ vendor_class.toText());
|
|
|
+
|
|
|
+ // Check that indentation works.
|
|
|
+ EXPECT_EQ(" type=16, len=22, enterprise id=0x4d2,"
|
|
|
+ " data-len0=11, vendor-class-data0='Hello world',"
|
|
|
+ " data-len1=3, vendor-class-data1='foo'",
|
|
|
+ vendor_class.toText(2));
|
|
|
+}
|
|
|
+
|
|
|
+} // end of anonymous namespace
|
|
|
+
|
Marcin Siodelski