1 // Copyright 2017 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "net/quic/quic_stream_factory.h"
6
7 #include <fuzzer/FuzzedDataProvider.h>
8
9 #include <algorithm>
10
11 #include "base/no_destructor.h"
12 #include "base/task/sequenced_task_runner.h"
13 #include "net/base/network_anonymization_key.h"
14 #include "net/base/test_completion_callback.h"
15 #include "net/cert/ct_policy_enforcer.h"
16 #include "net/cert/do_nothing_ct_verifier.h"
17 #include "net/cert/mock_cert_verifier.h"
18 #include "net/cert/x509_certificate.h"
19 #include "net/dns/context_host_resolver.h"
20 #include "net/dns/fuzzed_host_resolver_util.h"
21 #include "net/dns/host_resolver_system_task.h"
22 #include "net/dns/public/secure_dns_policy.h"
23 #include "net/http/http_server_properties.h"
24 #include "net/http/transport_security_state.h"
25 #include "net/quic/mock_crypto_client_stream_factory.h"
26 #include "net/quic/mock_quic_context.h"
27 #include "net/quic/quic_context.h"
28 #include "net/quic/quic_http_stream.h"
29 #include "net/quic/test_task_runner.h"
30 #include "net/socket/fuzzed_datagram_client_socket.h"
31 #include "net/socket/fuzzed_socket_factory.h"
32 #include "net/socket/socket_tag.h"
33 #include "net/ssl/ssl_config_service_defaults.h"
34 #include "net/test/gtest_util.h"
35 #include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
36 #include "url/scheme_host_port.h"
37 #include "url/url_constants.h"
38
39 namespace net {
40
41 namespace {
42
43 const uint8_t kCertData[] = {
44 #include "net/data/ssl/certificates/wildcard.inc"
45 };
46
47 } // namespace
48
49 namespace test {
50
51 const char kServerHostName[] = "www.example.org";
52 const int kServerPort = 443;
53 const char kUrl[] = "https://www.example.org/";
54 // TODO(nedwilliamson): Add POST here after testing
55 // whether that can lead blocking while waiting for
56 // the callbacks.
57 const char kMethod[] = "GET";
58 const size_t kBufferSize = 4096;
59 const int kCertVerifyFlags = 0;
60
61 // Persistent factory data, statically initialized on the first time
62 // LLVMFuzzerTestOneInput is called.
63 struct FuzzerEnvironment {
FuzzerEnvironmentnet::test::FuzzerEnvironment64 FuzzerEnvironment()
65 : scheme_host_port(url::kHttpsScheme, kServerHostName, kServerPort) {
66 net::SetSystemDnsResolutionTaskRunnerForTesting( // IN-TEST
67 base::SequencedTaskRunner::GetCurrentDefault());
68
69 quic_context.AdvanceTime(quic::QuicTime::Delta::FromSeconds(1));
70 ssl_config_service = std::make_unique<SSLConfigServiceDefaults>();
71 crypto_client_stream_factory.set_use_mock_crypter(true);
72 cert_verifier = std::make_unique<MockCertVerifier>();
73 verify_details.cert_verify_result.verified_cert =
74 X509Certificate::CreateFromBytes(kCertData);
75 CHECK(verify_details.cert_verify_result.verified_cert);
76 verify_details.cert_verify_result.is_issued_by_known_root = true;
77 }
78 ~FuzzerEnvironment() = default;
79
80 std::unique_ptr<SSLConfigService> ssl_config_service;
81 ProofVerifyDetailsChromium verify_details;
82 MockCryptoClientStreamFactory crypto_client_stream_factory;
83 url::SchemeHostPort scheme_host_port;
84 NetLogWithSource net_log;
85 std::unique_ptr<CertVerifier> cert_verifier;
86 TransportSecurityState transport_security_state;
87 quic::QuicTagVector connection_options;
88 quic::QuicTagVector client_connection_options;
89 DefaultCTPolicyEnforcer ct_policy_enforcer;
90 MockQuicContext quic_context;
91 };
92
GetFuzzerEnvironment()93 FuzzerEnvironment* GetFuzzerEnvironment() {
94 static base::NoDestructor<FuzzerEnvironment> fuzzer_environment;
95 return &*fuzzer_environment;
96 }
97
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)98 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
99 FuzzedDataProvider data_provider(data, size);
100
101 FuzzerEnvironment* env = GetFuzzerEnvironment();
102
103 std::unique_ptr<ContextHostResolver> host_resolver =
104 CreateFuzzedContextHostResolver(HostResolver::ManagerOptions(), nullptr,
105 &data_provider,
106 true /* enable_caching */);
107 FuzzedSocketFactory socket_factory(&data_provider);
108
109 // Initialize this on each loop since some options mutate this.
110 HttpServerProperties http_server_properties;
111
112 QuicParams& params = *env->quic_context.params();
113 params.max_server_configs_stored_in_properties =
114 data_provider.ConsumeBool() ? 1 : 0;
115 params.close_sessions_on_ip_change = data_provider.ConsumeBool();
116 params.allow_server_migration = data_provider.ConsumeBool();
117 params.estimate_initial_rtt = data_provider.ConsumeBool();
118 params.enable_socket_recv_optimization = data_provider.ConsumeBool();
119
120 env->crypto_client_stream_factory.AddProofVerifyDetails(&env->verify_details);
121
122 params.goaway_sessions_on_ip_change = false;
123 params.migrate_sessions_early_v2 = false;
124 params.migrate_sessions_on_network_change_v2 = false;
125 params.retry_on_alternate_network_before_handshake = false;
126 params.migrate_idle_sessions = false;
127
128 if (!params.close_sessions_on_ip_change) {
129 params.goaway_sessions_on_ip_change = data_provider.ConsumeBool();
130 if (!params.goaway_sessions_on_ip_change) {
131 params.migrate_sessions_on_network_change_v2 =
132 data_provider.ConsumeBool();
133 if (params.migrate_sessions_on_network_change_v2) {
134 params.migrate_sessions_early_v2 = data_provider.ConsumeBool();
135 params.retry_on_alternate_network_before_handshake =
136 data_provider.ConsumeBool();
137 params.migrate_idle_sessions = data_provider.ConsumeBool();
138 }
139 }
140 }
141
142 std::unique_ptr<QuicStreamFactory> factory =
143 std::make_unique<QuicStreamFactory>(
144 env->net_log.net_log(), host_resolver.get(),
145 env->ssl_config_service.get(), &socket_factory,
146 &http_server_properties, env->cert_verifier.get(),
147 &env->ct_policy_enforcer, &env->transport_security_state, nullptr,
148 nullptr, &env->crypto_client_stream_factory, &env->quic_context);
149
150 QuicStreamRequest request(factory.get());
151 TestCompletionCallback callback;
152 NetErrorDetails net_error_details;
153 quic::ParsedQuicVersionVector versions = AllSupportedQuicVersions();
154 quic::ParsedQuicVersion version =
155 versions[data_provider.ConsumeIntegralInRange<size_t>(
156 0, versions.size() - 1)];
157
158 quic::QuicEnableVersion(version);
159
160 request.Request(
161 env->scheme_host_port, version, PRIVACY_MODE_DISABLED, DEFAULT_PRIORITY,
162 SocketTag(), NetworkAnonymizationKey(), SecureDnsPolicy::kAllow,
163 true /* use_dns_aliases */, false /* require_dns_https_alpn */,
164 kCertVerifyFlags, GURL(kUrl), env->net_log, &net_error_details,
165 /*failed_on_default_network_callback=*/CompletionOnceCallback(),
166 callback.callback());
167
168 callback.WaitForResult();
169 std::unique_ptr<QuicChromiumClientSession::Handle> session =
170 request.ReleaseSessionHandle();
171 if (!session)
172 return 0;
173 auto dns_aliases = session->GetDnsAliasesForSessionKey(request.session_key());
174 auto stream = std::make_unique<QuicHttpStream>(std::move(session),
175 std::move(dns_aliases));
176
177 HttpRequestInfo request_info;
178 request_info.method = kMethod;
179 request_info.url = GURL(kUrl);
180 request_info.traffic_annotation =
181 MutableNetworkTrafficAnnotationTag(TRAFFIC_ANNOTATION_FOR_TESTS);
182 stream->RegisterRequest(&request_info);
183 stream->InitializeStream(true, DEFAULT_PRIORITY, env->net_log,
184 CompletionOnceCallback());
185
186 HttpResponseInfo response;
187 HttpRequestHeaders request_headers;
188 if (OK !=
189 stream->SendRequest(request_headers, &response, callback.callback()))
190 return 0;
191
192 // TODO(nedwilliamson): attempt connection migration here
193 int rv = stream->ReadResponseHeaders(callback.callback());
194 if (rv != OK && rv != ERR_IO_PENDING) {
195 return 0;
196 }
197 callback.WaitForResult();
198
199 auto buffer = base::MakeRefCounted<net::IOBufferWithSize>(kBufferSize);
200 rv = stream->ReadResponseBody(buffer.get(), kBufferSize, callback.callback());
201 if (rv == ERR_IO_PENDING)
202 callback.WaitForResult();
203
204 return 0;
205 }
206
207 } // namespace test
208 } // namespace net
209