1 /*
2 * Copyright 2018 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
11 #include "api/test/fake_frame_encryptor.h"
12
13 #include "rtc_base/checks.h"
14
15 namespace webrtc {
FakeFrameEncryptor(uint8_t fake_key,uint8_t postfix_byte)16 FakeFrameEncryptor::FakeFrameEncryptor(uint8_t fake_key, uint8_t postfix_byte)
17 : fake_key_(fake_key), postfix_byte_(postfix_byte) {}
18
19 // FrameEncryptorInterface implementation
Encrypt(cricket::MediaType media_type,uint32_t ssrc,rtc::ArrayView<const uint8_t> additional_data,rtc::ArrayView<const uint8_t> frame,rtc::ArrayView<uint8_t> encrypted_frame,size_t * bytes_written)20 int FakeFrameEncryptor::Encrypt(cricket::MediaType media_type,
21 uint32_t ssrc,
22 rtc::ArrayView<const uint8_t> additional_data,
23 rtc::ArrayView<const uint8_t> frame,
24 rtc::ArrayView<uint8_t> encrypted_frame,
25 size_t* bytes_written) {
26 if (fail_encryption_) {
27 return static_cast<int>(FakeEncryptionStatus::FORCED_FAILURE);
28 }
29
30 RTC_CHECK_EQ(frame.size() + 1, encrypted_frame.size());
31 for (size_t i = 0; i < frame.size(); i++) {
32 encrypted_frame[i] = frame[i] ^ fake_key_;
33 }
34
35 encrypted_frame[frame.size()] = postfix_byte_;
36 *bytes_written = encrypted_frame.size();
37 return static_cast<int>(FakeEncryptionStatus::OK);
38 }
39
GetMaxCiphertextByteSize(cricket::MediaType media_type,size_t frame_size)40 size_t FakeFrameEncryptor::GetMaxCiphertextByteSize(
41 cricket::MediaType media_type,
42 size_t frame_size) {
43 return frame_size + 1;
44 }
45
SetFakeKey(uint8_t fake_key)46 void FakeFrameEncryptor::SetFakeKey(uint8_t fake_key) {
47 fake_key_ = fake_key;
48 }
49
GetFakeKey() const50 uint8_t FakeFrameEncryptor::GetFakeKey() const {
51 return fake_key_;
52 }
53
SetPostfixByte(uint8_t postfix_byte)54 void FakeFrameEncryptor::SetPostfixByte(uint8_t postfix_byte) {
55 postfix_byte_ = postfix_byte;
56 }
57
GetPostfixByte() const58 uint8_t FakeFrameEncryptor::GetPostfixByte() const {
59 return postfix_byte_;
60 }
61
SetFailEncryption(bool fail_encryption)62 void FakeFrameEncryptor::SetFailEncryption(bool fail_encryption) {
63 fail_encryption_ = fail_encryption;
64 }
65
66 } // namespace webrtc
67