1 /*
2 * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10 #include "net/dcsctp/packet/crc32c.h"
11
12 #include "test/gmock.h"
13
14 namespace dcsctp {
15 namespace {
16
17 constexpr std::array<const uint8_t, 0> kEmpty = {};
18 constexpr std::array<const uint8_t, 1> kZero = {0};
19 constexpr std::array<const uint8_t, 4> kManyZeros = {0, 0, 0, 0};
20 constexpr std::array<const uint8_t, 4> kShort = {1, 2, 3, 4};
21 constexpr std::array<const uint8_t, 8> kLong = {1, 2, 3, 4, 5, 6, 7, 8};
22 // https://tools.ietf.org/html/rfc3720#appendix-B.4
23 constexpr std::array<const uint8_t, 32> k32Zeros = {
24 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
25 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
26 constexpr std::array<const uint8_t, 32> k32Ones = {
27 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
28 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
29 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
30 constexpr std::array<const uint8_t, 32> k32Incrementing = {
31 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
32 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31};
33 constexpr std::array<const uint8_t, 32> k32Decrementing = {
34 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16,
35 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
36 constexpr std::array<const uint8_t, 48> kISCSICommandPDU = {
37 0x01, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
38 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
39 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x18, 0x28, 0x00, 0x00, 0x00,
40 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
41 };
42
TEST(Crc32Test,TestVectors)43 TEST(Crc32Test, TestVectors) {
44 EXPECT_EQ(GenerateCrc32C(kEmpty), 0U);
45 EXPECT_EQ(GenerateCrc32C(kZero), 0x51537d52U);
46 EXPECT_EQ(GenerateCrc32C(kManyZeros), 0xc74b6748U);
47 EXPECT_EQ(GenerateCrc32C(kShort), 0xf48c3029U);
48 EXPECT_EQ(GenerateCrc32C(kLong), 0x811f8946U);
49 // https://tools.ietf.org/html/rfc3720#appendix-B.4
50 EXPECT_EQ(GenerateCrc32C(k32Zeros), 0xaa36918aU);
51 EXPECT_EQ(GenerateCrc32C(k32Ones), 0x43aba862U);
52 EXPECT_EQ(GenerateCrc32C(k32Incrementing), 0x4e79dd46U);
53 EXPECT_EQ(GenerateCrc32C(k32Decrementing), 0x5cdb3f11U);
54 EXPECT_EQ(GenerateCrc32C(kISCSICommandPDU), 0x563a96d9U);
55 }
56
57 } // namespace
58 } // namespace dcsctp
59