Fix parceling of LinkProperties Inet6Addr
IPv6 addresses parceled for DNS servers, private DNS servers, PCSCF
servers were parceled without the scope. This causes issues with
link-local DNS servers.
Test: atest FrameworksNetTests
Bug: 145181158
Change-Id: I0ed24e51d4d0656f4a1f932b5e9f646b35b4b971
diff --git a/core/java/android/net/LinkProperties.java b/core/java/android/net/LinkProperties.java
index 8e18341..f4ead4a 100644
--- a/core/java/android/net/LinkProperties.java
+++ b/core/java/android/net/LinkProperties.java
@@ -74,6 +74,8 @@
private static final int MIN_MTU_V6 = 1280;
private static final int MAX_MTU = 10000;
+ private static final int INET6_ADDR_LENGTH = 16;
+
// Stores the properties of links that are "stacked" above this link.
// Indexed by interface name to allow modification and to prevent duplicates being added.
private Hashtable<String, LinkProperties> mStackedLinks = new Hashtable<>();
@@ -1626,20 +1628,11 @@
dest.writeParcelable(linkAddress, flags);
}
- dest.writeInt(mDnses.size());
- for (InetAddress d : mDnses) {
- dest.writeByteArray(d.getAddress());
- }
- dest.writeInt(mValidatedPrivateDnses.size());
- for (InetAddress d : mValidatedPrivateDnses) {
- dest.writeByteArray(d.getAddress());
- }
+ writeAddresses(dest, mDnses);
+ writeAddresses(dest, mValidatedPrivateDnses);
dest.writeBoolean(mUsePrivateDns);
dest.writeString(mPrivateDnsServerName);
- dest.writeInt(mPcscfs.size());
- for (InetAddress d : mPcscfs) {
- dest.writeByteArray(d.getAddress());
- }
+ writeAddresses(dest, mPcscfs);
dest.writeString(mDomains);
dest.writeInt(mMtu);
dest.writeString(mTcpBufferSizes);
@@ -1662,6 +1655,35 @@
dest.writeBoolean(mWakeOnLanSupported);
}
+ private static void writeAddresses(@NonNull Parcel dest, @NonNull List<InetAddress> list) {
+ dest.writeInt(list.size());
+ for (InetAddress d : list) {
+ writeAddress(dest, d);
+ }
+ }
+
+ private static void writeAddress(@NonNull Parcel dest, @NonNull InetAddress addr) {
+ dest.writeByteArray(addr.getAddress());
+ if (addr instanceof Inet6Address) {
+ final Inet6Address v6Addr = (Inet6Address) addr;
+ final boolean hasScopeId = v6Addr.getScopeId() != 0;
+ dest.writeBoolean(hasScopeId);
+ if (hasScopeId) dest.writeInt(v6Addr.getScopeId());
+ }
+ }
+
+ @NonNull
+ private static InetAddress readAddress(@NonNull Parcel p) throws UnknownHostException {
+ final byte[] addr = p.createByteArray();
+ if (addr.length == INET6_ADDR_LENGTH) {
+ final boolean hasScopeId = p.readBoolean();
+ final int scopeId = hasScopeId ? p.readInt() : 0;
+ return Inet6Address.getByAddress(null /* host */, addr, scopeId);
+ }
+
+ return InetAddress.getByAddress(addr);
+ }
+
/**
* Implement the Parcelable interface.
*/
@@ -1681,14 +1703,13 @@
addressCount = in.readInt();
for (int i = 0; i < addressCount; i++) {
try {
- netProp.addDnsServer(InetAddress.getByAddress(in.createByteArray()));
+ netProp.addDnsServer(readAddress(in));
} catch (UnknownHostException e) { }
}
addressCount = in.readInt();
for (int i = 0; i < addressCount; i++) {
try {
- netProp.addValidatedPrivateDnsServer(
- InetAddress.getByAddress(in.createByteArray()));
+ netProp.addValidatedPrivateDnsServer(readAddress(in));
} catch (UnknownHostException e) { }
}
netProp.setUsePrivateDns(in.readBoolean());
@@ -1696,7 +1717,7 @@
addressCount = in.readInt();
for (int i = 0; i < addressCount; i++) {
try {
- netProp.addPcscfServer(InetAddress.getByAddress(in.createByteArray()));
+ netProp.addPcscfServer(readAddress(in));
} catch (UnknownHostException e) { }
}
netProp.setDomains(in.readString());
diff --git a/tests/net/common/java/android/net/LinkPropertiesTest.java b/tests/net/common/java/android/net/LinkPropertiesTest.java
index ae8285b..a7eef05 100644
--- a/tests/net/common/java/android/net/LinkPropertiesTest.java
+++ b/tests/net/common/java/android/net/LinkPropertiesTest.java
@@ -16,7 +16,9 @@
package android.net;
+import static com.android.testutils.ParcelUtilsKt.assertParcelSane;
import static com.android.testutils.ParcelUtilsKt.assertParcelingIsLossless;
+import static com.android.testutils.ParcelUtilsKt.parcelingRoundTrip;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
@@ -47,25 +49,22 @@
@RunWith(AndroidJUnit4.class)
@SmallTest
public class LinkPropertiesTest {
- private static final InetAddress ADDRV4 = InetAddresses.parseNumericAddress("75.208.6.1");
- private static final InetAddress ADDRV6 = InetAddresses.parseNumericAddress(
- "2001:0db8:85a3:0000:0000:8a2e:0370:7334");
- private static final InetAddress DNS1 = InetAddresses.parseNumericAddress("75.208.7.1");
- private static final InetAddress DNS2 = InetAddresses.parseNumericAddress("69.78.7.1");
- private static final InetAddress DNS6 = InetAddresses.parseNumericAddress(
- "2001:4860:4860::8888");
- private static final InetAddress PRIVDNS1 = InetAddresses.parseNumericAddress("1.1.1.1");
- private static final InetAddress PRIVDNS2 = InetAddresses.parseNumericAddress("1.0.0.1");
- private static final InetAddress PRIVDNS6 = InetAddresses.parseNumericAddress(
- "2606:4700:4700::1111");
- private static final InetAddress PCSCFV4 = InetAddresses.parseNumericAddress("10.77.25.37");
- private static final InetAddress PCSCFV6 = InetAddresses.parseNumericAddress(
- "2001:0db8:85a3:0000:0000:8a2e:0370:1");
- private static final InetAddress GATEWAY1 = InetAddresses.parseNumericAddress("75.208.8.1");
- private static final InetAddress GATEWAY2 = InetAddresses.parseNumericAddress("69.78.8.1");
- private static final InetAddress GATEWAY61 = InetAddresses.parseNumericAddress(
- "fe80::6:0000:613");
- private static final InetAddress GATEWAY62 = InetAddresses.parseNumericAddress("fe80::6:2222");
+ private static final InetAddress ADDRV4 = address("75.208.6.1");
+ private static final InetAddress ADDRV6 = address("2001:0db8:85a3:0000:0000:8a2e:0370:7334");
+ private static final InetAddress DNS1 = address("75.208.7.1");
+ private static final InetAddress DNS2 = address("69.78.7.1");
+ private static final InetAddress DNS6 = address("2001:4860:4860::8888");
+ private static final InetAddress PRIVDNS1 = address("1.1.1.1");
+ private static final InetAddress PRIVDNS2 = address("1.0.0.1");
+ private static final InetAddress PRIVDNS6 = address("2606:4700:4700::1111");
+ private static final InetAddress PCSCFV4 = address("10.77.25.37");
+ private static final InetAddress PCSCFV6 = address("2001:0db8:85a3:0000:0000:8a2e:0370:1");
+ private static final InetAddress GATEWAY1 = address("75.208.8.1");
+ private static final InetAddress GATEWAY2 = address("69.78.8.1");
+ private static final InetAddress GATEWAY61 = address("fe80::6:0000:613");
+ private static final InetAddress GATEWAY62 = address("fe80::6:22%lo");
+ private static final InetAddress TESTIPV4ADDR = address("192.168.47.42");
+ private static final InetAddress TESTIPV6ADDR = address("fe80::7:33%43");
private static final String NAME = "qmi0";
private static final String DOMAINS = "google.com";
private static final String PRIV_DNS_SERVER_NAME = "private.dns.com";
@@ -75,8 +74,7 @@
private static final LinkAddress LINKADDRV6 = new LinkAddress(ADDRV6, 128);
private static final LinkAddress LINKADDRV6LINKLOCAL = new LinkAddress("fe80::1/64");
- // TODO: replace all calls to NetworkUtils.numericToInetAddress with calls to this method.
- private InetAddress Address(String addrString) {
+ private static InetAddress address(String addrString) {
return InetAddresses.parseNumericAddress(addrString);
}
@@ -228,7 +226,7 @@
target.clear();
target.setInterfaceName(NAME);
// change link addresses
- target.addLinkAddress(new LinkAddress(Address("75.208.6.2"), 32));
+ target.addLinkAddress(new LinkAddress(address("75.208.6.2"), 32));
target.addLinkAddress(LINKADDRV6);
target.addDnsServer(DNS1);
target.addDnsServer(DNS2);
@@ -243,7 +241,7 @@
target.addLinkAddress(LINKADDRV4);
target.addLinkAddress(LINKADDRV6);
// change dnses
- target.addDnsServer(Address("75.208.7.2"));
+ target.addDnsServer(address("75.208.7.2"));
target.addDnsServer(DNS2);
target.addPcscfServer(PCSCFV6);
target.addRoute(new RouteInfo(GATEWAY1));
@@ -255,10 +253,10 @@
target.setInterfaceName(NAME);
target.addLinkAddress(LINKADDRV4);
target.addLinkAddress(LINKADDRV6);
- target.addDnsServer(Address("75.208.7.2"));
+ target.addDnsServer(address("75.208.7.2"));
target.addDnsServer(DNS2);
// change pcscf
- target.addPcscfServer(Address("2001::1"));
+ target.addPcscfServer(address("2001::1"));
target.addRoute(new RouteInfo(GATEWAY1));
target.addRoute(new RouteInfo(GATEWAY2));
target.setMtu(MTU);
@@ -271,9 +269,9 @@
target.addDnsServer(DNS1);
target.addDnsServer(DNS2);
// change gateway
- target.addRoute(new RouteInfo(Address("75.208.8.2")));
- target.addRoute(new RouteInfo(GATEWAY2));
+ target.addRoute(new RouteInfo(address("75.208.8.2")));
target.setMtu(MTU);
+ target.addRoute(new RouteInfo(GATEWAY2));
assertFalse(source.equals(target));
target.clear();
@@ -349,7 +347,7 @@
@Test
public void testRouteInterfaces() {
- LinkAddress prefix = new LinkAddress(Address("2001:db8::"), 32);
+ LinkAddress prefix = new LinkAddress(address("2001:db8::"), 32);
InetAddress address = ADDRV6;
// Add a route with no interface to a LinkProperties with no interface. No errors.
@@ -739,8 +737,7 @@
// Add an on-link route, making the on-link DNS server reachable,
// but there is still no IPv4 address.
- assertTrue(v4lp.addRoute(new RouteInfo(
- new IpPrefix(NetworkUtils.numericToInetAddress("75.208.0.0"), 16))));
+ assertTrue(v4lp.addRoute(new RouteInfo(new IpPrefix(address("75.208.0.0"), 16))));
assertFalse(v4lp.isReachable(DNS1));
assertFalse(v4lp.isReachable(DNS2));
@@ -756,9 +753,9 @@
assertTrue(v4lp.isReachable(DNS2));
final LinkProperties v6lp = new LinkProperties();
- final InetAddress kLinkLocalDns = Address("fe80::6:1");
- final InetAddress kLinkLocalDnsWithScope = Address("fe80::6:2%43");
- final InetAddress kOnLinkDns = Address("2001:db8:85a3::53");
+ final InetAddress kLinkLocalDns = address("fe80::6:1");
+ final InetAddress kLinkLocalDnsWithScope = address("fe80::6:2%43");
+ final InetAddress kOnLinkDns = address("2001:db8:85a3::53");
assertFalse(v6lp.isReachable(kLinkLocalDns));
assertFalse(v6lp.isReachable(kLinkLocalDnsWithScope));
assertFalse(v6lp.isReachable(kOnLinkDns));
@@ -767,7 +764,7 @@
// Add a link-local route, making the link-local DNS servers reachable. Because
// we assume the presence of an IPv6 link-local address, link-local DNS servers
// are considered reachable, but only those with a non-zero scope identifier.
- assertTrue(v6lp.addRoute(new RouteInfo(new IpPrefix(Address("fe80::"), 64))));
+ assertTrue(v6lp.addRoute(new RouteInfo(new IpPrefix(address("fe80::"), 64))));
assertFalse(v6lp.isReachable(kLinkLocalDns));
assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
assertFalse(v6lp.isReachable(kOnLinkDns));
@@ -783,7 +780,7 @@
// Add a global route on link, but no global address yet. DNS servers reachable
// via a route that doesn't require a gateway: give them the benefit of the
// doubt and hope the link-local source address suffices for communication.
- assertTrue(v6lp.addRoute(new RouteInfo(new IpPrefix(Address("2001:db8:85a3::"), 64))));
+ assertTrue(v6lp.addRoute(new RouteInfo(new IpPrefix(address("2001:db8:85a3::"), 64))));
assertFalse(v6lp.isReachable(kLinkLocalDns));
assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
assertTrue(v6lp.isReachable(kOnLinkDns));
@@ -812,7 +809,7 @@
stacked.setInterfaceName("v4-test0");
v6lp.addStackedLink(stacked);
- InetAddress stackedAddress = Address("192.0.0.4");
+ InetAddress stackedAddress = address("192.0.0.4");
LinkAddress stackedLinkAddress = new LinkAddress(stackedAddress, 32);
assertFalse(v6lp.isReachable(stackedAddress));
stacked.addLinkAddress(stackedLinkAddress);
@@ -845,7 +842,7 @@
LinkProperties rmnet1 = new LinkProperties();
rmnet1.setInterfaceName("rmnet1");
rmnet1.addLinkAddress(new LinkAddress("10.0.0.3/8"));
- RouteInfo defaultRoute1 = new RouteInfo((IpPrefix) null, Address("10.0.0.1"),
+ RouteInfo defaultRoute1 = new RouteInfo((IpPrefix) null, address("10.0.0.1"),
rmnet1.getInterfaceName());
RouteInfo directRoute1 = new RouteInfo(new IpPrefix("10.0.0.0/8"), null,
rmnet1.getInterfaceName());
@@ -864,7 +861,7 @@
rmnet2.setInterfaceName("rmnet2");
rmnet2.addLinkAddress(new LinkAddress("fe80::cafe/64"));
rmnet2.addLinkAddress(new LinkAddress("2001:db8::2/64"));
- RouteInfo defaultRoute2 = new RouteInfo((IpPrefix) null, Address("2001:db8::1"),
+ RouteInfo defaultRoute2 = new RouteInfo((IpPrefix) null, address("2001:db8::1"),
rmnet2.getInterfaceName());
RouteInfo directRoute2 = new RouteInfo(new IpPrefix("2001:db8::/64"), null,
rmnet2.getInterfaceName());
@@ -930,24 +927,54 @@
public void testLinkPropertiesParcelable() throws Exception {
LinkProperties source = new LinkProperties();
source.setInterfaceName(NAME);
- // set 2 link addresses
+
source.addLinkAddress(LINKADDRV4);
source.addLinkAddress(LINKADDRV6);
- // set 2 dnses
+
source.addDnsServer(DNS1);
source.addDnsServer(DNS2);
- // set 2 gateways
+ source.addDnsServer(GATEWAY62);
+
+ source.addPcscfServer(TESTIPV4ADDR);
+ source.addPcscfServer(TESTIPV6ADDR);
+
+ source.setUsePrivateDns(true);
+ source.setPrivateDnsServerName(PRIV_DNS_SERVER_NAME);
+
+ source.setDomains(DOMAINS);
+
source.addRoute(new RouteInfo(GATEWAY1));
source.addRoute(new RouteInfo(GATEWAY2));
- // set 2 validated private dnses
+
source.addValidatedPrivateDnsServer(DNS6);
source.addValidatedPrivateDnsServer(GATEWAY61);
+ source.addValidatedPrivateDnsServer(TESTIPV6ADDR);
+
+ source.setHttpProxy(ProxyInfo.buildDirectProxy("test", 8888));
source.setMtu(MTU);
+ source.setTcpBufferSizes(TCP_BUFFER_SIZES);
+
source.setNat64Prefix(new IpPrefix("2001:db8:1:2:64:64::/96"));
- assertParcelingIsLossless(source);
+ source.setWakeOnLanSupported(true);
+
+ final LinkProperties stacked = new LinkProperties();
+ stacked.setInterfaceName("test-stacked");
+ source.addStackedLink(stacked);
+
+ assertParcelSane(source, 15 /* fieldCount */);
+ }
+
+ @Test
+ public void testLinkLocalDnsServerParceling() throws Exception {
+ final String strAddress = "fe80::1%lo";
+ final LinkProperties lp = new LinkProperties();
+ lp.addDnsServer(address(strAddress));
+ final LinkProperties unparceled = parcelingRoundTrip(lp);
+ // Inet6Address#equals does not test for the scope id
+ assertEquals(strAddress, unparceled.getDnsServers().get(0).getHostAddress());
}
@Test