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70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
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// Copyright 2016 The Chromium Authors. All rights reserved.
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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 <memory>
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#include "base/logging.h"
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#include "base/test/fuzzed_data_provider.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/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/log/test_net_log.h"
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#include "net/socket/client_socket_handle.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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// Use a test NetLog, to exercise logging code.
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net::TestNetLog test_net_log;
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base::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, and returns an IPv4 or IPv6 address.
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net::MockHostResolver mock_host_resolver;
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scoped_refptr<net::RuleBasedHostResolverProc> rules(
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new net::RuleBasedHostResolverProc(nullptr));
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mock_host_resolver.set_synchronous_mode(data_provider.ConsumeBool());
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switch (data_provider.ConsumeInt32InRange(0, 2)) {
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case 0:
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rules->AddRule("*", "127.0.0.1");
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break;
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case 1:
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rules->AddRule("*", "::1");
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break;
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case 2:
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rules->AddSimulatedFailure("*");
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break;
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}
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mock_host_resolver.set_rules(rules.get());
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net::TestCompletionCallback callback;
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std::unique_ptr<net::FuzzedSocket> fuzzed_socket(
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new net::FuzzedSocket(&data_provider, &test_net_log));
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CHECK_EQ(net::OK, fuzzed_socket->Connect(callback.callback()));
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std::unique_ptr<net::ClientSocketHandle> socket_handle(
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new net::ClientSocketHandle());
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socket_handle->SetSocket(std::move(fuzzed_socket));
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net::HostResolver::RequestInfo request_info(net::HostPortPair("foo", 80));
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net::SOCKSClientSocket socket(std::move(socket_handle), request_info,
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net::DEFAULT_PRIORITY, &mock_host_resolver,
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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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