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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "socket_mock_fuzz.h"
SocketMockFuzz::SocketMockFuzz() : Socket(INVALID_SOCKET) {}
SocketMockFuzz::~SocketMockFuzz() {}
bool SocketMockFuzz::Send(const void* data, size_t length) {
if (events_.empty()) {
return false;
}
if (events_.front().type != EventType::kSend) {
return false;
}
std::string message(reinterpret_cast<const char*>(data), length);
if (events_.front().message != message) {
return false;
}
bool return_value = events_.front().status;
events_.pop();
return return_value;
}
// Mock out multi-buffer send to be one large send, since that's what it should looks like from
// the user's perspective.
bool SocketMockFuzz::Send(std::vector<cutils_socket_buffer_t> buffers) {
std::string data;
for (const auto& buffer : buffers) {
data.append(reinterpret_cast<const char*>(buffer.data), buffer.length);
}
return Send(data.data(), data.size());
}
ssize_t SocketMockFuzz::Receive(void* data, size_t length, int /*timeout_ms*/) {
if (events_.empty()) {
return -1;
}
const Event& event = events_.front();
if (event.type != EventType::kReceive) {
return -1;
}
const std::string& message = event.message;
if (message.length() > length) {
return -1;
}
receive_timed_out_ = event.status;
ssize_t return_value = message.length();
// Empty message indicates failure.
if (message.empty()) {
return_value = -1;
} else {
memcpy(data, message.data(), message.length());
}
events_.pop();
return return_value;
}
int SocketMockFuzz::Close() {
return 0;
}
std::unique_ptr<Socket> SocketMockFuzz::Accept() {
if (events_.empty()) {
return nullptr;
}
if (events_.front().type != EventType::kAccept) {
return nullptr;
}
std::unique_ptr<Socket> sock = std::move(events_.front().sock);
events_.pop();
return sock;
}
void SocketMockFuzz::ExpectSend(std::string message) {
events_.push(Event(EventType::kSend, std::move(message), true, nullptr));
}
void SocketMockFuzz::ExpectSendFailure(std::string message) {
events_.push(Event(EventType::kSend, std::move(message), false, nullptr));
}
void SocketMockFuzz::AddReceive(std::string message) {
events_.push(Event(EventType::kReceive, std::move(message), false, nullptr));
}
void SocketMockFuzz::AddReceiveTimeout() {
events_.push(Event(EventType::kReceive, "", true, nullptr));
}
void SocketMockFuzz::AddReceiveFailure() {
events_.push(Event(EventType::kReceive, "", false, nullptr));
}
void SocketMockFuzz::AddAccept(std::unique_ptr<Socket> sock) {
events_.push(Event(EventType::kAccept, "", false, std::move(sock)));
}
SocketMockFuzz::Event::Event(EventType _type, std::string _message, ssize_t _status,
std::unique_ptr<Socket> _sock)
: type(_type), message(_message), status(_status), sock(std::move(_sock)) {}
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