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172 | // Copyright (C) 2023-2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Kea Hooks Basic
// Commercial End User License Agreement v2.0. See COPYING file in the premium/
// directory.
/// @file This file contains tests which exercise the ICMPMsg class.
#include <config.h>
#include <icmp_msg.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <asiolink/io_address.h>
#include <testutils/gtest_utils.h>
#include <util/str.h>
#include <gtest/gtest.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <list><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace std;
using namespace isc;
using namespace isc::asiolink;
using namespace isc::ping_check;
namespace {
// Verifies accessors.
TEST(ICMPMsgTest, basics) {
ICMPMsgPtr msg(new ICMPMsg());
msg->setType(ICMPMsg::ECHO_REPLY);
EXPECT_EQ(ICMPMsg::ECHO_REPLY, msg->getType());
msg->setCode(77);
EXPECT_EQ(77, msg->getCode());
msg->setChecksum(0x8899);
EXPECT_EQ(0x8899, msg->getChecksum());
msg->setId(0x1122);
EXPECT_EQ(0x1122, msg->getId());
msg->setSequence(0x3344);
EXPECT_EQ(0x3344, msg->getSequence());
msg->setSource(IOAddress("192.0.2.1"));
EXPECT_EQ(IOAddress("192.0.2.1"), msg->getSource());
msg->setDestination(IOAddress("192.0.2.2"));
EXPECT_EQ(IOAddress("192.0.2.2"), msg->getDestination());
std::vector<uint8_t> payload{ 0x55, 0x66, 0x77, 0x88, 0x99 };
msg->setPayload(payload.data(), payload.size());
EXPECT_EQ(payload, msg->getPayload());
}
// Verifies that a valid ECHO REPLY message can be unpacked.
TEST(ICMPMsgTest, unpackValidEchoReply) {<--- syntax error
// Create wire data for a valid ECHO REPLY.
std::string echo_reply =
"45:00:00:30:73:8a:00:00:40:01:a0:ff:b2:10:01:19:b2:10:01:0a:"
"00:00:33:11:55:66:77:88:"
"00:00:00:00:00:00:00:00:"
"00:00:00:00:00:00:00:00:"
"00:00:00:00";
std::vector<uint8_t> wire_data;
ASSERT_NO_THROW_LOG(util::str::decodeSeparatedHexString(echo_reply, ":", wire_data));
// Unpack the wire data.
ICMPMsgPtr msg;
ASSERT_NO_THROW_LOG(msg = ICMPMsg::unpack(wire_data.data(), wire_data.size()));
ASSERT_TRUE(msg);
// Verify the reply contents.
EXPECT_EQ(ICMPMsg::ECHO_REPLY, msg->getType());
EXPECT_EQ(0, msg->getCode());
EXPECT_EQ(0x3311, msg->getChecksum());
EXPECT_EQ(0x5566, msg->getId());
EXPECT_EQ(0x7788, msg->getSequence());
EXPECT_EQ(IOAddress("178.16.1.25"), msg->getSource());
EXPECT_EQ(IOAddress("178.16.1.10"), msg->getDestination());
std::vector<uint8_t> payload{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
EXPECT_EQ(payload, msg->getPayload());
}
// Verifies that a valid DESTINATION UNREACHABLE message can be unpacked.
TEST(ICMPMsgTest, unpackValidUnreachable) {
// Valid destination unreachable message. Payload is the original
// ECHO request.
std::string unreachable =
"45:c0:00:4c:31:b3:00:00:40:01:e2:09:b2:10:01:0a:b2:10:01:0a:"
"03:01:fc:fe:00:00:00:00:"
"45:00:00:30:e3:e2:40:00:40:01:f0:5c:"
"b2:10:01:0a:b2:10:01:63:08:00:2b:11:"
"55:66:77:88:00:00:00:00:00:00:00:00:"
"00:00:00:00:00:00:00:00:00:00:00:00";
// Create the wire data.
std::vector<uint8_t> wire_data;
ASSERT_NO_THROW_LOG(util::str::decodeSeparatedHexString(unreachable, ":", wire_data));
// Unpack the outer message.
ICMPMsgPtr msg;
ASSERT_NO_THROW_LOG(msg = ICMPMsg::unpack(wire_data.data(), wire_data.size()));
ASSERT_TRUE(msg);
// Verify its contents.
EXPECT_EQ(ICMPMsg::TARGET_UNREACHABLE, msg->getType());
EXPECT_EQ(1, msg->getCode());
EXPECT_EQ(0xfcfe, msg->getChecksum());
EXPECT_EQ(0, msg->getId());
EXPECT_EQ(0, msg->getSequence());
EXPECT_EQ(IOAddress("178.16.1.10"), msg->getSource());
EXPECT_EQ(IOAddress("178.16.1.10"), msg->getDestination());
// Now unpack the original ECHO from the outer message payload.
std::vector<uint8_t> payload(wire_data.begin() + 28, wire_data.end());
EXPECT_EQ(payload, msg->getPayload());
ICMPMsgPtr payload_msg;
ASSERT_NO_THROW_LOG(payload_msg = ICMPMsg::unpack(payload.data(), payload.size()));
ASSERT_TRUE(payload_msg);
// Verify the original ECHO contents.
EXPECT_EQ(ICMPMsg::ECHO_REQUEST, payload_msg->getType());
EXPECT_EQ(0, payload_msg->getCode());
EXPECT_EQ(0x2b11, payload_msg->getChecksum());
EXPECT_EQ(0x5566, payload_msg->getId());
EXPECT_EQ(0x7788, payload_msg->getSequence());
EXPECT_EQ(IOAddress("178.16.1.10"), payload_msg->getSource());
EXPECT_EQ(IOAddress("178.16.1.99"), payload_msg->getDestination());
}
// Verifies the malformed packets are detected.
TEST(ICMPMsgTest, unpackInValidPackets) {
// Contains a test scenario.
struct Scenario {
// Wire data to submit to unpack.
std::string wire_data_;
// Expected exception message.
std::string error_msg_;
};
// List of scenarios to test.
std::list<Scenario> scenarios = {
{
// Truncated IP header
"45:c0:00:4c:31:b3:00:00:40:01:e2:09:b2",
"ICMPMsg::unpack - truncated ip header, length: 13"
},
{
// Truncated packet
"45:c0:00:4c:31:b3:00:00:40:01:e2:09:b2:10:01:0a:b2:10:01:0a:"
"03:01:fc:fe:00:00:00:00:"
"45:00:00:30:e3:e2:40:00:40:01:f0:5c",
"ICMPMsg::truncated packet? length: 40, hlen: 20"
}
};
// Iterate over scenarios.
for (auto const& scenario : scenarios) {
// Create the wire data.
std::vector<uint8_t> wire_data;
ASSERT_NO_THROW_LOG(util::str::decodeSeparatedHexString(scenario.wire_data_, ":", wire_data));
ASSERT_THROW_MSG(ICMPMsg::unpack(wire_data.data(), wire_data.size()), BadValue, scenario.error_msg_);
}
}
/// @todo YOU NEED some round trip tests that test packing!
} // end of anonymous namespace
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