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236 | // Copyright (C) 2011-2024 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/.
/// \brief Test of asiolink utilities
///
/// Tests the functionality of the asiolink utilities code by comparing them
/// with the equivalent methods in isc::dns::[Input/Output]Buffer.
#include <config.h>
#include <testutils/gtest_utils.h>
#include <util/buffer.h>
#include <util/io.h>
#include <bitset><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <cstddef><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <cstdint><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <string><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <arpa/inet.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <gtest/gtest.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace isc;
using namespace isc::util;
using namespace std;
namespace {
struct ReadWriteUintTest : ::testing::Test {
template <typename uint_t>
string showDiff(uint_t const left, uint8_t* const right) {
bitset<8 * sizeof(uint_t)> const bitset_left(left);
bitset<8 * sizeof(uint_t)> const bitset_right(*(reinterpret_cast<uint_t*>(right)));
string const bitstring_left(separateBytes(bitset_left.to_string()));
string const bitstring_right(separateBytes(bitset_right.to_string()));
string const diff(::testing::internal::edit_distance::CreateUnifiedDiff({bitstring_left},
{bitstring_right}));
return (diff);
}
private:
string separateBytes(string const& input) {
size_t const position(8);
stringstream ss;
for (size_t i = 0; i < input.size(); i = i + position) {
if (i) {
ss << " ";
}
ss << input.substr(i, position);
}
return (ss.str());
}
};
/// @brief Check whether uint16_t can be read from a buffer properly.
TEST_F(ReadWriteUintTest, readUint16) {<--- syntax error
uint16_t const test16[] = {0, 1, 2000, 0x8000, 0xffff};
uint8_t data[] = {0, 0, 0, 0};
// Make sure that we can read data, regardless of the memory alignment.
// That is why we need to repeat it 2 times.
for (size_t offset = 0; offset < sizeof(uint16_t); ++offset) {
for (size_t i = 0; i < sizeof(test16) / sizeof(uint16_t); ++i) {
SCOPED_TRACE("offset " + to_string(offset) + ", iteration " + to_string(i));
uint16_t tmp = htons(test16[i]);
memcpy(&data[offset], &tmp, sizeof(uint16_t));
EXPECT_EQ(test16[i], readUint16(&data[offset], sizeof(uint16_t)));
}
}
}
/// @brief Check whether reading an uint16_t results in an exception.
TEST_F(ReadWriteUintTest, readUint16OutOfRange) {
uint8_t data[] = {0};
EXPECT_THROW_MSG(readUint16(data, 1), OutOfRange,
"Expected buffer to be long enough to read a 2-byte integer, but got 1 byte "
"instead");
}
/// @brief Check whether uint16_t can be written to a buffer properly.
TEST_F(ReadWriteUintTest, writeUint16) {
uint16_t const test16[] = {0, 1, 2000, 0x8000, 0xffff};
uint8_t data[4];
// Make sure that we can write data, regardless of the memory alignment.
// That's why we need to repeat 2 times.
for (size_t offset = 0; offset < sizeof(uint16_t); ++offset) {
for (size_t i = 0; i < sizeof(test16) / sizeof(uint16_t); ++i) {
SCOPED_TRACE("offset " + to_string(offset) + ", iteration " + to_string(i));
uint8_t* ptr = writeUint16(test16[i], &data[offset], sizeof(uint16_t));
EXPECT_EQ(&data[offset] + sizeof(uint16_t), ptr);
uint16_t tmp = htons(test16[i]);
EXPECT_EQ(0, memcmp(&tmp, &data[offset], sizeof(uint16_t)))
<< showDiff(tmp, &data[offset]);
}
}
}
/// @brief Check whether writing an uint16_t results in an exception.
TEST_F(ReadWriteUintTest, writeUint16OutOfRange) {
uint16_t i16 = 42;
uint8_t data[1];
EXPECT_THROW_MSG(writeUint16(i16, data, sizeof(data)), OutOfRange,
"Expected buffer to be long enough to write a 2-byte integer, but got 1 byte "
"instead");
}
/// @brief Check whether uint32_t can be read from a buffer properly.
TEST_F(ReadWriteUintTest, readUint32) {
uint32_t const test32[] = {0, 1, 2000, 0x80000000, 0xffffffff};
uint8_t data[] = {0, 0, 0, 0, 0, 0, 0, 0};
// Make sure that we can read data, regardless of the memory alignment.
// That is why we need to repeat it 4 times.
for (size_t offset = 0; offset < sizeof(uint32_t); ++offset) {
for (size_t i = 0; i < sizeof(test32) / sizeof(uint32_t); ++i) {
SCOPED_TRACE("offset " + to_string(offset) + ", iteration " + to_string(i));
uint32_t tmp = htonl(test32[i]);
memcpy(&data[offset], &tmp, sizeof(uint32_t));
EXPECT_EQ(test32[i], readUint32(&data[offset], sizeof(uint32_t)));
}
}
}
/// @brief Check whether reading an uint32_t results in an exception.
TEST_F(ReadWriteUintTest, readUint32OutOfRange) {
uint8_t data[] = {0, 0, 0};
EXPECT_THROW_MSG(readUint32(data, 3), OutOfRange,
"Expected buffer to be long enough to read a 4-byte integer, but got 3 bytes "
"instead");
}
/// @brief Check whether uint32_t can be written to a buffer properly.
TEST_F(ReadWriteUintTest, writeUint32) {
uint32_t const test32[] = {0, 1, 2000, 0x80000000, 0xffffffff};
uint8_t data[8];
// Make sure that we can write data, regardless of the memory alignment.
// That's why we need to repeat 4 times.
for (size_t offset = 0; offset < sizeof(uint32_t); ++offset) {
for (size_t i = 0; i < sizeof(test32) / sizeof(uint32_t); ++i) {
SCOPED_TRACE("offset " + to_string(offset) + ", iteration " + to_string(i));
uint8_t* ptr = writeUint32(test32[i], &data[offset], sizeof(uint32_t));
EXPECT_EQ(&data[offset] + sizeof(uint32_t), ptr);
uint32_t tmp = htonl(test32[i]);
EXPECT_EQ(0, memcmp(&tmp, &data[offset], sizeof(uint32_t)))
<< showDiff(tmp, &data[offset]);
}
}
}
/// @brief Check whether writing an uint32_t results in an exception.
TEST_F(ReadWriteUintTest, writeUint32OutOfRange) {
uint32_t i32 = 28;
uint8_t data[3];
EXPECT_THROW_MSG(writeUint32(i32, data, sizeof(data)), OutOfRange,
"Expected buffer to be long enough to write a 4-byte integer, but got 3 bytes "
"instead");
}
/// @brief Check whether uint64_t can be read from a buffer properly.
TEST_F(ReadWriteUintTest, readUint64) {
uint64_t const test64[] = {0, 1, 2000, 0x80000000, 0xffffffff, 0xfffffffffffffff};
uint8_t data[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
// Make sure that we can read data, regardless of the memory alignment.
// That is why we need to repeat it 8 times.
for (size_t offset = 0; offset < sizeof(uint64_t); ++offset) {
for (size_t i = 0; i < sizeof(test64) / sizeof(uint64_t); ++i) {
SCOPED_TRACE("offset " + to_string(offset) + ", iteration " + to_string(i));
uint64_t tmp = (uint64_t(htonl(test64[i])) << 32) | htonl(test64[i] >> 32);
memcpy(&data[offset], &tmp, sizeof(uint64_t));
EXPECT_EQ(test64[i], readUint64(&data[offset], sizeof(uint64_t)));
}
}
}
/// @brief Check whether reading an uint64_t results in an exception.
TEST_F(ReadWriteUintTest, readUint64OutOfRange) {
uint8_t buf[] = {0, 0, 0, 0, 0, 0, 0};
EXPECT_THROW_MSG(readUint64(buf, 7), OutOfRange,
"Expected buffer to be long enough to read a 8-byte integer, but got 7 bytes "
"instead");
}
/// @brief Check whether uint64 can be written to a buffer properly.
TEST_F(ReadWriteUintTest, writeUint64) {
uint64_t const test64[] = {0, 1, 2000, 0x80000000, 0xffffffff, 0xfffffffffffffff};
uint8_t data[16];
// Make sure that we can write data, regardless of the memory alignment.
// That's why we need to repeat 8 times.
for (size_t offset = 0; offset < sizeof(uint64_t); ++offset) {
for (size_t i = 0; i < sizeof(test64) / sizeof(uint64_t); ++i) {
SCOPED_TRACE("offset " + to_string(offset) + ", iteration " + to_string(i));
uint8_t* ptr = writeUint64(test64[i], &data[offset], sizeof(uint64_t));
EXPECT_EQ(&data[offset] + sizeof(uint64_t), ptr);
uint64_t tmp = (uint64_t(htonl(test64[i])) << 32) | htonl(test64[i] >> 32);
EXPECT_EQ(0, memcmp(&tmp, &data[offset], sizeof(uint64_t)))
<< showDiff(tmp, &data[offset]);
}
}
}
/// @brief Check whether writing an uint64_t results in an exception.
TEST_F(ReadWriteUintTest, writeUint64OutOfRange) {
uint64_t i64 = 28;
uint8_t data[7];
EXPECT_THROW_MSG(writeUint64(i64, data, sizeof(data)), OutOfRange,
"Expected buffer to be long enough to write a 8-byte integer, but got 7 bytes "
"instead");
}
} // namespace
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