blob: 4ad1b137bbc25e072d644bfe2cc72afec81aeffc [file] [log] [blame]
// Copyright 2016 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 <memory>
#include "base/logging.h"
#include "base/test/fuzzed_data_provider.h"
#include "net/base/address_list.h"
#include "net/base/net_errors.h"
#include "net/base/test_completion_callback.h"
#include "net/dns/host_resolver.h"
#include "net/dns/mock_host_resolver.h"
#include "net/log/test_net_log.h"
#include "net/socket/client_socket_handle.h"
#include "net/socket/fuzzed_socket.h"
#include "net/socket/socks_client_socket.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "starboard/types.h"
// Fuzzer for SocksClientSocket. Only covers the SOCKS4 handshake.
//
// |data| is used to create a FuzzedSocket to fuzz reads and writes, see that
// class for details.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
// Use a test NetLog, to exercise logging code.
net::TestNetLog test_net_log;
base::FuzzedDataProvider data_provider(data, size);
// Determine if the DNS lookup returns synchronously or asynchronously,
// succeeds or fails, and returns an IPv4 or IPv6 address.
net::MockHostResolver mock_host_resolver;
scoped_refptr<net::RuleBasedHostResolverProc> rules(
new net::RuleBasedHostResolverProc(nullptr));
mock_host_resolver.set_synchronous_mode(data_provider.ConsumeBool());
switch (data_provider.ConsumeInt32InRange(0, 2)) {
case 0:
rules->AddRule("*", "127.0.0.1");
break;
case 1:
rules->AddRule("*", "::1");
break;
case 2:
rules->AddSimulatedFailure("*");
break;
}
mock_host_resolver.set_rules(rules.get());
net::TestCompletionCallback callback;
std::unique_ptr<net::FuzzedSocket> fuzzed_socket(
new net::FuzzedSocket(&data_provider, &test_net_log));
CHECK_EQ(net::OK, fuzzed_socket->Connect(callback.callback()));
std::unique_ptr<net::ClientSocketHandle> socket_handle(
new net::ClientSocketHandle());
socket_handle->SetSocket(std::move(fuzzed_socket));
net::HostResolver::RequestInfo request_info(net::HostPortPair("foo", 80));
net::SOCKSClientSocket socket(std::move(socket_handle), request_info,
net::DEFAULT_PRIORITY, &mock_host_resolver,
TRAFFIC_ANNOTATION_FOR_TESTS);
int result = socket.Connect(callback.callback());
callback.GetResult(result);
return 0;
}