90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
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/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#include "resolv_fuzzer_utils.h"
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namespace android::net {
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// Initializes servers to simulate the DNS over UDP/TLS/HTTPS.
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test::DNSResponder dns{kDefaultServer, kDnsPortString};
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test::DohFrontend doh{kDefaultServer, kDohPortString, "127.0.1.3", kDnsPortString};
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test::DNSResponder doh_backend{"127.0.1.3", kDnsPortString};
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test::DnsTlsFrontend dot{kDefaultServer, kDotPortString, "127.0.2.3", kDnsPortString};
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test::DNSResponder dot_backend{"127.0.2.3", kDnsPortString};
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ResolverController resolverCtrl;
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// TODO: Consider moving to packages/modules/DnsResolver/tests/resolv_test_utils.h.
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void StartDns(test::DNSResponder& dns, const std::vector<DnsRecord>& records) {
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for (const auto& r : records) {
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dns.addMapping(r.host_name, r.type, r.addr);
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}
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ASSERT_TRUE(dns.startServer());
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dns.clearQueries();
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}
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int RandomSocketType(FuzzedDataProvider& fdp) {
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int socktype = fdp.PickValueInArray(
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{SOCK_STREAM, SOCK_DGRAM, SOCK_RAW, SOCK_RDM, SOCK_SEQPACKET, SOCK_DCCP, SOCK_PACKET});
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if (fdp.ConsumeBool()) socktype |= SOCK_CLOEXEC;
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if (fdp.ConsumeBool()) socktype |= SOCK_NONBLOCK;
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return socktype;
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}
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// Initializes the callback functions to createNetworkCache.
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void InitDnsResolverCallbacks() {
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gResNetdCallbacks.check_calling_permission = [](const char*) -> bool { return true; };
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gResNetdCallbacks.get_network_context = [](uint32_t, uint32_t, android_net_context*) {};
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gResNetdCallbacks.log = [](const char*) {};
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}
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void InitServers() {
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StartDns(dns, records);
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doh.startServer();
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StartDns(doh_backend, records);
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dot.startServer();
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StartDns(dot_backend, records);
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}
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void CleanServers() {
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dns.clearQueries();
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doh.clearQueries();
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doh_backend.clearQueries();
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dot.clearQueries();
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dot_backend.clearQueries();
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}
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// Initializes servers only one time.
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bool DoInit() {
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// Sets log level to WARNING to lower I/O time cost.
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resolv_set_log_severity(android::base::WARNING);
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doh_init_logger(DOH_LOG_LEVEL_WARN);
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// Needs to init callback and create netework cache.
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InitDnsResolverCallbacks();
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resolverCtrl.createNetworkCache(TEST_NETID);
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InitServers();
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return true;
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}
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void CleanUp() {
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CleanServers();
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resolverCtrl.flushNetworkCache(TEST_NETID);
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}
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} // namespace android::net
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