1 #include <netdb.h>
2 #include <sys/param.h>
3
4 #include <string>
5
6 #include "resolv_fuzzer_utils.h"
7
8 namespace android::net {
9 namespace {
10
11 // Tests resolv_gethostbyname.
TestResolvGethostbyname(FuzzedDataProvider & fdp)12 void TestResolvGethostbyname(FuzzedDataProvider& fdp) {
13 std::string hostname = fdp.ConsumeRandomLengthString(MAXHOSTNAMELEN);
14 // All valid address families in socket.h, e.g. AF_INET.
15 int af = fdp.ConsumeIntegralInRange<int>(0, AF_MAX);
16 hostent hbuf;
17 char tmpbuf[MAXPACKET];
18 hostent* hp;
19 NetworkDnsEventReported event;
20
21 resolv_gethostbyname(fdp.ConsumeBool() ? hostname.c_str() : nullptr, af, &hbuf, tmpbuf,
22 sizeof(tmpbuf), &mNetContext, &hp, &event);
23 }
24
25 } // namespace
26
27 // Entry point of fuzzing test.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)28 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
29 [[maybe_unused]] static const bool initialized = DoInit();
30 FuzzedDataProvider fdp(data, size);
31
32 auto parcel = DnsResponderClient::GetDefaultResolverParamsParcel();
33 // Chooses private DNS or not.
34 if (fdp.ConsumeBool()) parcel.tlsServers = {};
35 resolverCtrl.setResolverConfiguration(parcel);
36
37 TestResolvGethostbyname(fdp);
38
39 CleanUp();
40 return 0;
41 }
42
43 } // namespace android::net
44