Examples with IpPrefix android.net.IpPrefix used on opensource projects

Example 46 with IpPrefix

use of android.net.IpPrefix in project android_frameworks_base by AOSPA.

the class IPv6TetheringInterfaceServices method updateUpstreamIPv6LinkProperties.

// IPv6TetheringCoordinator sends updates with carefully curated IPv6-only
// LinkProperties. These have extraneous data filtered out and only the
// necessary prefixes included (per its prefix distribution policy).
//
// TODO: Evaluate using a data structure than is more directly suited to
// communicating only the relevant information.
public void updateUpstreamIPv6LinkProperties(LinkProperties v6only) {
    if (mRaDaemon == null)
        return;
    // Avoid unnecessary work on spurious updates.
    if (Objects.equals(mLastIPv6LinkProperties, v6only)) {
        return;
    }
    RaParams params = null;
    if (v6only != null) {
        params = new RaParams();
        params.mtu = v6only.getMtu();
        params.hasDefaultRoute = v6only.hasIPv6DefaultRoute();
        for (LinkAddress linkAddr : v6only.getLinkAddresses()) {
            if (linkAddr.getPrefixLength() != RFC7421_IP_PREFIX_LENGTH)
                continue;
            final IpPrefix prefix = new IpPrefix(linkAddr.getAddress(), linkAddr.getPrefixLength());
            params.prefixes.add(prefix);
            final Inet6Address dnsServer = getLocalDnsIpFor(prefix);
            if (dnsServer != null) {
                params.dnses.add(dnsServer);
            }
        }
    }
    // If v6only is null, we pass in null to setRaParams(), which handles
    // deprecation of any existing RA data.
    setRaParams(params);
    mLastIPv6LinkProperties = v6only;
}

Example 47 with IpPrefix

use of android.net.IpPrefix in project platform_frameworks_base by android.

the class LinkPropertiesTest method testIsReachable.

@SmallTest
// Failing.
@Suppress
public void testIsReachable() {
    final LinkProperties v4lp = new LinkProperties();
    assertFalse(v4lp.isReachable(DNS1));
    assertFalse(v4lp.isReachable(DNS2));
    // 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))));
    assertFalse(v4lp.isReachable(DNS1));
    assertFalse(v4lp.isReachable(DNS2));
    // Adding an IPv4 address (right now, any IPv4 address) means we use
    // the routes to compute likely reachability.
    assertTrue(v4lp.addLinkAddress(new LinkAddress(ADDRV4, 16)));
    assertTrue(v4lp.isReachable(DNS1));
    assertFalse(v4lp.isReachable(DNS2));
    // Adding a default route makes the off-link DNS server reachable.
    assertTrue(v4lp.addRoute(new RouteInfo(GATEWAY1)));
    assertTrue(v4lp.isReachable(DNS1));
    assertTrue(v4lp.isReachable(DNS2));
    final LinkProperties v6lp = new LinkProperties();
    final InetAddress kLinkLocalDns = NetworkUtils.numericToInetAddress("fe80::6:1");
    final InetAddress kLinkLocalDnsWithScope = NetworkUtils.numericToInetAddress("fe80::6:2%43");
    final InetAddress kOnLinkDns = NetworkUtils.numericToInetAddress("2001:db8:85a3::53");
    assertFalse(v6lp.isReachable(kLinkLocalDns));
    assertFalse(v6lp.isReachable(kLinkLocalDnsWithScope));
    assertFalse(v6lp.isReachable(kOnLinkDns));
    assertFalse(v6lp.isReachable(DNS6));
    // 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(NetworkUtils.numericToInetAddress("fe80::"), 64))));
    assertFalse(v6lp.isReachable(kLinkLocalDns));
    assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
    assertFalse(v6lp.isReachable(kOnLinkDns));
    assertFalse(v6lp.isReachable(DNS6));
    // Add a link-local address--nothing changes.
    assertTrue(v6lp.addLinkAddress(LINKADDRV6LINKLOCAL));
    assertFalse(v6lp.isReachable(kLinkLocalDns));
    assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
    assertFalse(v6lp.isReachable(kOnLinkDns));
    assertFalse(v6lp.isReachable(DNS6));
    // 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(NetworkUtils.numericToInetAddress("2001:db8:85a3::"), 64))));
    assertFalse(v6lp.isReachable(kLinkLocalDns));
    assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
    assertTrue(v6lp.isReachable(kOnLinkDns));
    assertFalse(v6lp.isReachable(DNS6));
    // Add a global address; the on-link global address DNS server is (still)
    // presumed reachable.
    assertTrue(v6lp.addLinkAddress(new LinkAddress(ADDRV6, 64)));
    assertFalse(v6lp.isReachable(kLinkLocalDns));
    assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
    assertTrue(v6lp.isReachable(kOnLinkDns));
    assertFalse(v6lp.isReachable(DNS6));
    // Adding a default route makes the off-link DNS server reachable.
    assertTrue(v6lp.addRoute(new RouteInfo(GATEWAY62)));
    assertFalse(v6lp.isReachable(kLinkLocalDns));
    assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
    assertTrue(v6lp.isReachable(kOnLinkDns));
    assertTrue(v6lp.isReachable(DNS6));
    // Check isReachable on stacked links. This requires that the source IP address be assigned
    // on the interface returned by the route lookup.
    LinkProperties stacked = new LinkProperties();
    // Can't add a stacked link without an interface name.
    stacked.setInterfaceName("v4-test0");
    v6lp.addStackedLink(stacked);
    InetAddress stackedAddress = Address("192.0.0.4");
    LinkAddress stackedLinkAddress = new LinkAddress(stackedAddress, 32);
    assertFalse(v6lp.isReachable(stackedAddress));
    stacked.addLinkAddress(stackedLinkAddress);
    assertFalse(v6lp.isReachable(stackedAddress));
    stacked.addRoute(new RouteInfo(stackedLinkAddress));
    assertTrue(stacked.isReachable(stackedAddress));
    assertTrue(v6lp.isReachable(stackedAddress));
    assertFalse(v6lp.isReachable(DNS1));
    stacked.addRoute(new RouteInfo((IpPrefix) null, stackedAddress));
    assertTrue(v6lp.isReachable(DNS1));
}

Example 48 with IpPrefix

use of android.net.IpPrefix in project platform_frameworks_base by android.

the class IpPrefixTest method testConstructor.

@SmallTest
public void testConstructor() {
    IpPrefix p;
    try {
        p = new IpPrefix((byte[]) null, 9);
        fail("Expected NullPointerException: null byte array");
    } catch (RuntimeException expected) {
    }
    try {
        p = new IpPrefix((InetAddress) null, 10);
        fail("Expected NullPointerException: null InetAddress");
    } catch (RuntimeException expected) {
    }
    try {
        p = new IpPrefix((String) null);
        fail("Expected NullPointerException: null String");
    } catch (RuntimeException expected) {
    }
    try {
        byte[] b2 = { 1, 2, 3, 4, 5 };
        p = new IpPrefix(b2, 29);
        fail("Expected IllegalArgumentException: invalid array length");
    } catch (IllegalArgumentException expected) {
    }
    try {
        p = new IpPrefix("1.2.3.4");
        fail("Expected IllegalArgumentException: no prefix length");
    } catch (IllegalArgumentException expected) {
    }
    try {
        p = new IpPrefix("1.2.3.4/");
        fail("Expected IllegalArgumentException: empty prefix length");
    } catch (IllegalArgumentException expected) {
    }
    try {
        p = new IpPrefix("foo/32");
        fail("Expected IllegalArgumentException: invalid address");
    } catch (IllegalArgumentException expected) {
    }
    try {
        p = new IpPrefix("1/32");
        fail("Expected IllegalArgumentException: deprecated IPv4 format");
    } catch (IllegalArgumentException expected) {
    }
    try {
        p = new IpPrefix("1.2.3.256/32");
        fail("Expected IllegalArgumentException: invalid IPv4 address");
    } catch (IllegalArgumentException expected) {
    }
    try {
        p = new IpPrefix("foo/32");
        fail("Expected IllegalArgumentException: non-address");
    } catch (IllegalArgumentException expected) {
    }
    try {
        p = new IpPrefix("f00:::/32");
        fail("Expected IllegalArgumentException: invalid IPv6 address");
    } catch (IllegalArgumentException expected) {
    }
}

Example 49 with IpPrefix

use of android.net.IpPrefix in project platform_frameworks_base by android.

the class IpPrefixTest method testContains.

@SmallTest
public void testContains() {
    IpPrefix p = new IpPrefix("2001:db8:f00::ace:d00d/127");
    assertTrue(p.contains(Address("2001:db8:f00::ace:d00c")));
    assertTrue(p.contains(Address("2001:db8:f00::ace:d00d")));
    assertFalse(p.contains(Address("2001:db8:f00::ace:d00e")));
    assertFalse(p.contains(Address("2001:db8:f00::bad:d00d")));
    assertFalse(p.contains(Address("2001:4868:4860::8888")));
    assertFalse(p.contains(null));
    assertFalse(p.contains(Address("8.8.8.8")));
    p = new IpPrefix("192.0.2.0/23");
    assertTrue(p.contains(Address("192.0.2.43")));
    assertTrue(p.contains(Address("192.0.3.21")));
    assertFalse(p.contains(Address("192.0.0.21")));
    assertFalse(p.contains(Address("8.8.8.8")));
    assertFalse(p.contains(Address("2001:4868:4860::8888")));
    IpPrefix ipv6Default = new IpPrefix("::/0");
    assertTrue(ipv6Default.contains(Address("2001:db8::f00")));
    assertFalse(ipv6Default.contains(Address("192.0.2.1")));
    IpPrefix ipv4Default = new IpPrefix("0.0.0.0/0");
    assertTrue(ipv4Default.contains(Address("255.255.255.255")));
    assertTrue(ipv4Default.contains(Address("192.0.2.1")));
    assertFalse(ipv4Default.contains(Address("2001:db8::f00")));
}

Example 50 with IpPrefix

use of android.net.IpPrefix in project platform_frameworks_base by android.

the class IpPrefixTest method testHashCode.

@SmallTest
public void testHashCode() {
    IpPrefix p = new IpPrefix(new byte[4], 0);
    Random random = new Random();
    for (int i = 0; i < 100; i++) {
        final IpPrefix oldP = p;
        if (random.nextBoolean()) {
            // IPv4.
            byte[] b = new byte[4];
            random.nextBytes(b);
            p = new IpPrefix(b, random.nextInt(33));
        } else {
            // IPv6.
            byte[] b = new byte[16];
            random.nextBytes(b);
            p = new IpPrefix(b, random.nextInt(129));
        }
        if (p.equals(oldP)) {
            assertEquals(p.hashCode(), oldP.hashCode());
        }
        if (p.hashCode() != oldP.hashCode()) {
            assertNotEqual(p, oldP);
        }
    }
}