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Merge "Minor changes and more cts tests for DnsResolver"

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This commit is contained in:
Luke Huang
2019-03-08 03:19:55 +00:00
committed by Gerrit Code Review
parent 652fc29761 a0629ad8b9
commit db7e161d85
1 changed files with 161 additions and 54 deletions
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215
tests/cts/net/src/android/net/cts/DnsResolverTest.java
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@@ -17,16 +17,16 @@
package android.net.cts;
import static android.net.DnsResolver.CLASS_IN;
import static android.net.DnsResolver.TYPE_A;
import static android.net.DnsResolver.TYPE_AAAA;
import static android.net.DnsResolver.FLAG_NO_CACHE_LOOKUP;
import static android.net.DnsResolver.TYPE_AAAA;
import android.annotation.NonNull;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.DnsPacket;
import android.net.DnsResolver;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkUtils;
import android.os.Handler;
import android.os.Looper;
import android.system.ErrnoException;
@@ -35,14 +35,18 @@ import android.util.Log;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
public class DnsResolverTest extends AndroidTestCase {
private static final String TAG = "DnsResolverTest";
private static final char[] HEX_CHARS = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
static final int TIMEOUT_MS = 12_000;
private ConnectivityManager mCM;
private Handler mHandler;
private DnsResolver mDns;
@@ -54,7 +58,7 @@ public class DnsResolverTest extends AndroidTestCase {
mDns = DnsResolver.getInstance();
}
private static String bytesArrayToHexString(byte[] bytes) {
private static String byteArrayToHexString(byte[] bytes) {
char[] hexChars = new char[bytes.length * 2];
for (int i = 0; i < bytes.length; ++i) {
int b = bytes[i] & 0xFF;
@@ -77,85 +81,188 @@ public class DnsResolverTest extends AndroidTestCase {
assertTrue(
"This test requires that at least one network be connected. " +
"Please ensure that the device is connected to a network.",
"Please ensure that the device is connected to a network.",
testableNetworks.size() >= 1);
return testableNetworks.toArray(new Network[0]);
}
public void testInetAddressQuery() throws ErrnoException {
final String dname = "www.google.com";
final String msg = "InetAddress query " + dname;
for (Network network : getTestableNetworks()) {
CountDownLatch latch = new CountDownLatch(1);
final int TIMEOUT_MS = 5_000;
final String dname = "www.google.com";
final CountDownLatch latch = new CountDownLatch(1);
final AtomicReference<List<InetAddress>> answers = new AtomicReference<>();
mDns.query(network, dname, FLAG_NO_CACHE_LOOKUP, mHandler, answerList -> {
if (answerList.size() != 0) {
latch.countDown();
answers.set(answerList);
for (InetAddress addr : answerList) {
Log.e(TAG, "Reported addr:" + addr.toString());
Log.d(TAG, "Reported addr:" + addr.toString());
}
latch.countDown();
}
}
);
String msg = "InetAddress query " + dname + " but no valid answer after "
+ TIMEOUT_MS + "ms.";
try {
assertTrue(msg, latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
} catch (InterruptedException e) {}
assertTrue(msg + " but no valid answer after " + TIMEOUT_MS + "ms.",
latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertGreaterThan(msg + " returned 0 result", answers.get().size(), 0);
} catch (InterruptedException e) {
}
}
}
static private void assertGreaterThan(String msg, int a, int b) {
assertTrue(msg + ": " + a + " > " + b, a > b);
}
static private void assertValidAnswer(String msg, @NonNull DnsAnswer ans) {
// Check rcode field.(0, No error condition).
assertTrue(msg + " Response error, rcode: " + ans.getRcode(), ans.getRcode() == 0);
// Check answer counts.
assertTrue(msg + " No answer found", ans.getANCount() > 0);
// Check question counts.
assertTrue(msg + " No question found", ans.getQDCount() > 0);
}
static private void assertValidEmptyAnswer(String msg, @NonNull DnsAnswer ans) {
// Check rcode field.(0, No error condition).
assertTrue(msg + " Response error, rcode: " + ans.getRcode(), ans.getRcode() == 0);
// Check answer counts. Expect 0 answer.
assertTrue(msg + " Not an empty answer", ans.getANCount() == 0);
// Check question counts.
assertTrue(msg + " No question found", ans.getQDCount() > 0);
}
private class DnsAnswer extends DnsPacket {
DnsAnswer(@NonNull byte[] data) throws ParseException {
super(data);
// Check QR field.(query (0), or a response (1)).
if ((mHeader.flags & (1 << 15)) == 0) {
throw new ParseException("Not an answer packet");
}
}
int getRcode() {
return mHeader.rcode;
}
int getANCount(){
return mHeader.getRecordCount(ANSECTION);
}
int getQDCount(){
return mHeader.getRecordCount(QDSECTION);
}
}
public void testRawQuery() throws ErrnoException {
final String dname = "www.google.com";
final String msg = "Raw query " + dname;
for (Network network : getTestableNetworks()) {
CountDownLatch latch = new CountDownLatch(1);
final int TIMEOUT_MS = 5_000;
final String dname = "www.google.com";
mDns.query(network, dname, CLASS_IN, TYPE_AAAA, FLAG_NO_CACHE_LOOKUP, mHandler, answer -> {
if (answer != null) {
latch.countDown();
Log.e(TAG, "Reported blob:" + bytesArrayToHexString(answer));
final CountDownLatch latch = new CountDownLatch(1);
mDns.query(network, dname, CLASS_IN, TYPE_AAAA, FLAG_NO_CACHE_LOOKUP, mHandler,
answer -> {
if (answer == null) {
fail(msg + " no answer returned");
}
try {
assertValidAnswer(msg, new DnsAnswer(answer));
Log.d(TAG, "Reported blob:" + byteArrayToHexString(answer));
latch.countDown();
} catch (DnsPacket.ParseException e) {
fail(msg + e.getMessage());
}
}
}
);
String msg = "Raw query " + dname + " but no valid answer after " + TIMEOUT_MS + "ms.";
try {
assertTrue(msg, latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
} catch (InterruptedException e) {}
assertTrue(msg + " but no answer after " + TIMEOUT_MS + "ms.",
latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
} catch (InterruptedException e) {
}
}
}
public void testRawQueryWithBlob() throws ErrnoException {
final byte[] blob = new byte[]{
/* Header */
0x55, 0x66, /* Transaction ID */
0x01, 0x00, /* Flags */
0x00, 0x01, /* Questions */
0x00, 0x00, /* Answer RRs */
0x00, 0x00, /* Authority RRs */
0x00, 0x00, /* Additional RRs */
/* Queries */
0x03, 0x77, 0x77, 0x77, 0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6c, 0x65,
0x03, 0x63, 0x6f, 0x6d, 0x00, /* Name */
0x00, 0x01, /* Type */
0x00, 0x01 /* Class */
};
final String msg = "Raw query with blob " + byteArrayToHexString(blob);
for (Network network : getTestableNetworks()) {
CountDownLatch latch = new CountDownLatch(1);
final int TIMEOUT_MS = 5_000;
final byte[] blob = new byte[] {
/* Header */
0x55, 0x66, /* Transaction ID */
0x01, 0x00, /* Flags */
0x00, 0x01, /* Questions */
0x00, 0x00, /* Answer RRs */
0x00, 0x00, /* Authority RRs */
0x00, 0x00, /* Additional RRs */
/* Queries */
0x03, 0x77, 0x77, 0x77, 0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6c, 0x65,
0x03, 0x63, 0x6f, 0x6d, 0x00, /* Name */
0x00, 0x01, /* Type */
0x00, 0x01 /* Class */
};
final CountDownLatch latch = new CountDownLatch(1);
mDns.query(network, blob, FLAG_NO_CACHE_LOOKUP, mHandler, answer -> {
if (answer != null) {
latch.countDown();
Log.e(TAG, "Reported blob:" + bytesArrayToHexString(answer));
if (answer == null) {
fail(msg + " no answer returned");
}
try {
assertValidAnswer(msg, new DnsAnswer(answer));
Log.d(TAG, "Reported blob:" + byteArrayToHexString(answer));
latch.countDown();
} catch (DnsPacket.ParseException e) {
fail(msg + e.getMessage());
}
}
}
);
String msg = "Raw query with blob " + bytesArrayToHexString(blob) +
" but no valid answer after " + TIMEOUT_MS + "ms.";
try {
assertTrue(msg, latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
} catch (InterruptedException e) {}
assertTrue(msg + " but no answer after " + TIMEOUT_MS + "ms.",
latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
} catch (InterruptedException e) {
}
}
}
public void testEmptyQuery() throws ErrnoException {
final String dname = "";
final String msg = "Raw query empty dname(ROOT)";
for (Network network : getTestableNetworks()) {
final CountDownLatch latch = new CountDownLatch(1);
mDns.query(network, dname, CLASS_IN, TYPE_AAAA, FLAG_NO_CACHE_LOOKUP, mHandler,
answer -> {
if (answer == null) {
fail(msg + " no answer returned");
}
try {
// Except no answer record because of querying with empty dname(ROOT)
assertValidEmptyAnswer(msg, new DnsAnswer(answer));
latch.countDown();
} catch (DnsPacket.ParseException e) {
fail(msg + e.getMessage());
}
}
);
try {
assertTrue(msg + " but no answer after " + TIMEOUT_MS + "ms.",
latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
} catch (InterruptedException e) {
}
}
}
public void testNXQuery() throws ErrnoException {
final String dname = "test1-nx.metric.gstatic.com";
final String msg = "InetAddress query " + dname;
for (Network network : getTestableNetworks()) {
final CountDownLatch latch = new CountDownLatch(1);
mDns.query(network, dname, FLAG_NO_CACHE_LOOKUP, mHandler, answerList -> {
if (answerList.size() == 0) {
latch.countDown();
return;
}
fail(msg + " but get valid answers");
}
);
try {
assertTrue(msg + " but no answer after " + TIMEOUT_MS + "ms.",
latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
} catch (InterruptedException e) {
}
}
}
}