62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
// Copyright 2016 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stddef.h>
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#include <stdint.h>
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#include <fuzzer/FuzzedDataProvider.h>
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#include <memory>
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#include "base/check_op.h"
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#include "net/base/address_list.h"
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#include "net/base/net_errors.h"
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#include "net/base/network_anonymization_key.h"
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#include "net/base/test_completion_callback.h"
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#include "net/dns/host_resolver.h"
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#include "net/dns/mock_host_resolver.h"
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#include "net/dns/public/secure_dns_policy.h"
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#include "net/log/net_log.h"
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#include "net/log/test_net_log.h"
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#include "net/socket/fuzzed_socket.h"
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#include "net/socket/socks_client_socket.h"
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#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
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// Fuzzer for SocksClientSocket. Only covers the SOCKS4 handshake.
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//
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// |data| is used to create a FuzzedSocket to fuzz reads and writes, see that
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// class for details.
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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// Including an observer; even though the recorded results aren't currently
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// used, it'll ensure the netlogging code is fuzzed as well.
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net::RecordingNetLogObserver net_log_observer;
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FuzzedDataProvider data_provider(data, size);
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// Determine if the DNS lookup returns synchronously or asynchronously,
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// succeeds or fails. Only returning an IPv4 address is fine, as SOCKS only
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// issues IPv4 requests.
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net::MockHostResolver mock_host_resolver;
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mock_host_resolver.set_synchronous_mode(data_provider.ConsumeBool());
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if (data_provider.ConsumeBool()) {
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mock_host_resolver.rules()->AddRule("*", "127.0.0.1");
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} else {
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mock_host_resolver.rules()->AddRule("*", net::ERR_NAME_NOT_RESOLVED);
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}
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net::TestCompletionCallback callback;
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auto fuzzed_socket =
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std::make_unique<net::FuzzedSocket>(&data_provider, net::NetLog::Get());
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CHECK_EQ(net::OK, fuzzed_socket->Connect(callback.callback()));
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net::SOCKSClientSocket socket(
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std::move(fuzzed_socket), net::HostPortPair("foo", 80),
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net::NetworkAnonymizationKey(), net::DEFAULT_PRIORITY,
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&mock_host_resolver, net::SecureDnsPolicy::kAllow,
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TRAFFIC_ANNOTATION_FOR_TESTS);
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int result = socket.Connect(callback.callback());
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callback.GetResult(result);
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return 0;
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}
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