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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/url_request/url_request.h"
#include <stddef.h>
#include <stdint.h>
#include <fuzzer/FuzzedDataProvider.h>
#include <memory>
#include "base/run_loop.h"
#include "net/base/request_priority.h"
#include "net/socket/fuzzed_socket_factory.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_builder.h"
#include "net/url_request/url_request_test_util.h"
#include "url/gurl.h"
// Restrict max input length to reject too long inputs that can be too slow to
// process and may lead to an unbounded corpus growth.
const size_t kMaxInputSize = 65536 + 257;
// Integration fuzzer for URLRequest's handling of HTTP requests. Can follow
// redirects, both on the same server (using a new socket or the old one) and
// across servers.
// TODO(mmenke): Add support for testing HTTPS, auth, proxies, uploading,
// cancelation, deferring reads / redirects, using preconnected sockets, SPDY,
// QUIC, DNS failures (they all currently resolve to localhost), IPv6 DNS
// results, URLs with IPs instead of hostnames (v4 and v6), etc.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size > kMaxInputSize)
return 0;
FuzzedDataProvider data_provider(data, size);
auto context_builder = net::CreateTestURLRequestContextBuilder();
net::FuzzedSocketFactory fuzzed_socket_factory(&data_provider);
context_builder->set_client_socket_factory_for_testing(
&fuzzed_socket_factory);
auto url_request_context = context_builder->Build();
net::TestDelegate delegate;
base::RunLoop loop;
delegate.set_on_complete(loop.QuitWhenIdleClosure());
std::unique_ptr<net::URLRequest> url_request(
url_request_context->CreateRequest(GURL("http://foo/"),
net::DEFAULT_PRIORITY, &delegate,
TRAFFIC_ANNOTATION_FOR_TESTS));
url_request->Start();
// TestDelegate quits the message loop on completion.
loop.Run();
return 0;
}
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