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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <fuzzer/FuzzedDataProvider.h>
#include "base/check_op.h"
#include "base/macros.h"
#include "base/run_loop.h"
#include "net/base/net_errors.h"
#include "net/log/test_net_log.h"
#include "net/server/http_server.h"
#include "net/socket/fuzzed_server_socket.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
namespace {
class WaitTillHttpCloseDelegate : public net::HttpServer::Delegate {
public:
WaitTillHttpCloseDelegate(FuzzedDataProvider* data_provider,
base::OnceClosure done_closure)
: server_(nullptr),
data_provider_(data_provider),
done_closure_(std::move(done_closure)),
action_flags_(data_provider_->ConsumeIntegral<uint8_t>()) {}
void set_server(net::HttpServer* server) { server_ = server; }
void OnConnect(int connection_id) override {
if (!(action_flags_ & ACCEPT_CONNECTION))
server_->Close(connection_id);
}
void OnHttpRequest(int connection_id,
const net::HttpServerRequestInfo& info) override {
if (!(action_flags_ & ACCEPT_MESSAGE)) {
server_->Close(connection_id);
return;
}
if (action_flags_ & REPLY_TO_MESSAGE) {
server_->Send200(connection_id,
data_provider_->ConsumeRandomLengthString(64),
"text/html", TRAFFIC_ANNOTATION_FOR_TESTS);
}
}
void OnWebSocketRequest(int connection_id,
const net::HttpServerRequestInfo& info) override {
if (action_flags_ & CLOSE_WEBSOCKET_RATHER_THAN_ACCEPT) {
server_->Close(connection_id);
return;
}
if (action_flags_ & ACCEPT_WEBSOCKET)
server_->AcceptWebSocket(connection_id, info,
TRAFFIC_ANNOTATION_FOR_TESTS);
}
void OnWebSocketMessage(int connection_id, std::string data) override {
if (!(action_flags_ & ACCEPT_MESSAGE)) {
server_->Close(connection_id);
return;
}
if (action_flags_ & REPLY_TO_MESSAGE) {
server_->SendOverWebSocket(connection_id,
data_provider_->ConsumeRandomLengthString(64),
TRAFFIC_ANNOTATION_FOR_TESTS);
}
}
void OnClose(int connection_id) override {
// In general, OnClose can be called more than once, but FuzzedServerSocket
// only makes one connection, and it is the only socket of interest here.
std::move(done_closure_).Run();
}
private:
enum {
ACCEPT_CONNECTION = 1,
ACCEPT_MESSAGE = 2,
REPLY_TO_MESSAGE = 4,
ACCEPT_WEBSOCKET = 8,
CLOSE_WEBSOCKET_RATHER_THAN_ACCEPT = 16
};
net::HttpServer* server_;
FuzzedDataProvider* const data_provider_;
base::OnceClosure done_closure_;
const uint8_t action_flags_;
DISALLOW_COPY_AND_ASSIGN(WaitTillHttpCloseDelegate);
};
} // namespace
// Fuzzer for HttpServer
//
// |data| is used to create a FuzzedServerSocket.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
net::RecordingTestNetLog test_net_log;
FuzzedDataProvider data_provider(data, size);
std::unique_ptr<net::ServerSocket> server_socket(
std::make_unique<net::FuzzedServerSocket>(&data_provider, &test_net_log));
CHECK_EQ(net::OK,
server_socket->ListenWithAddressAndPort("127.0.0.1", 80, 5));
base::RunLoop run_loop;
WaitTillHttpCloseDelegate delegate(&data_provider, run_loop.QuitClosure());
net::HttpServer server(std::move(server_socket), &delegate);
delegate.set_server(&server);
run_loop.Run();
return 0;
}
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