| /* |
| * Copyright 2018 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "api/test/fake_frame_decryptor.h" |
| |
| #include <cstddef> |
| #include <cstdint> |
| #include <vector> |
| |
| #include "api/array_view.h" |
| #include "api/media_types.h" |
| #include "rtc_base/checks.h" |
| |
| namespace webrtc { |
| |
| FakeFrameDecryptor::FakeFrameDecryptor(uint8_t fake_key, |
| uint8_t expected_postfix_byte) |
| : fake_key_(fake_key), expected_postfix_byte_(expected_postfix_byte) {} |
| |
| FakeFrameDecryptor::Result FakeFrameDecryptor::Decrypt( |
| cricket::MediaType media_type, |
| const std::vector<uint32_t>& csrcs, |
| rtc::ArrayView<const uint8_t> additional_data, |
| rtc::ArrayView<const uint8_t> encrypted_frame, |
| rtc::ArrayView<uint8_t> frame) { |
| if (fail_decryption_) { |
| return Result(Status::kFailedToDecrypt, 0); |
| } |
| |
| RTC_CHECK_EQ(frame.size() + 1, encrypted_frame.size()); |
| for (size_t i = 0; i < frame.size(); i++) { |
| frame[i] = encrypted_frame[i] ^ fake_key_; |
| } |
| |
| if (encrypted_frame[frame.size()] != expected_postfix_byte_) { |
| return Result(Status::kFailedToDecrypt, 0); |
| } |
| |
| return Result(Status::kOk, frame.size()); |
| } |
| |
| size_t FakeFrameDecryptor::GetMaxPlaintextByteSize( |
| cricket::MediaType media_type, |
| size_t encrypted_frame_size) { |
| return encrypted_frame_size - 1; |
| } |
| |
| void FakeFrameDecryptor::SetFakeKey(uint8_t fake_key) { |
| fake_key_ = fake_key; |
| } |
| |
| uint8_t FakeFrameDecryptor::GetFakeKey() const { |
| return fake_key_; |
| } |
| |
| void FakeFrameDecryptor::SetExpectedPostfixByte(uint8_t expected_postfix_byte) { |
| expected_postfix_byte_ = expected_postfix_byte; |
| } |
| |
| uint8_t FakeFrameDecryptor::GetExpectedPostfixByte() const { |
| return expected_postfix_byte_; |
| } |
| |
| void FakeFrameDecryptor::SetFailDecryption(bool fail_decryption) { |
| fail_decryption_ = fail_decryption; |
| } |
| |
| } // namespace webrtc |