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

Example 6 with IpPrefix

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

the class IPv6TetheringCoordinator method getIPv6OnlyLinkProperties.

private static LinkProperties getIPv6OnlyLinkProperties(LinkProperties lp) {
    final LinkProperties v6only = new LinkProperties();
    if (lp == null) {
        return v6only;
    }
    // NOTE: At this time we don't copy over any information about any
    // stacked links. No current stacked link configuration has IPv6.
    v6only.setInterfaceName(lp.getInterfaceName());
    v6only.setMtu(lp.getMtu());
    for (LinkAddress linkAddr : lp.getLinkAddresses()) {
        if (linkAddr.isGlobalPreferred() && linkAddr.getPrefixLength() == 64) {
            v6only.addLinkAddress(linkAddr);
        }
    }
    for (RouteInfo routeInfo : lp.getRoutes()) {
        final IpPrefix destination = routeInfo.getDestination();
        if ((destination.getAddress() instanceof Inet6Address) && (destination.getPrefixLength() <= 64)) {
            v6only.addRoute(routeInfo);
        }
    }
    for (InetAddress dnsServer : lp.getDnsServers()) {
        if (isIPv6GlobalAddress(dnsServer)) {
            // For now we include ULAs.
            v6only.addDnsServer(dnsServer);
        }
    }
    v6only.setDomains(lp.getDomains());
    return v6only;
}

Example 7 with IpPrefix

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

the class Vpn method makeLinkProperties.

private LinkProperties makeLinkProperties() {
    boolean allowIPv4 = mConfig.allowIPv4;
    boolean allowIPv6 = mConfig.allowIPv6;
    LinkProperties lp = new LinkProperties();
    lp.setInterfaceName(mInterface);
    if (mConfig.addresses != null) {
        for (LinkAddress address : mConfig.addresses) {
            lp.addLinkAddress(address);
            allowIPv4 |= address.getAddress() instanceof Inet4Address;
            allowIPv6 |= address.getAddress() instanceof Inet6Address;
        }
    }
    if (mConfig.routes != null) {
        for (RouteInfo route : mConfig.routes) {
            lp.addRoute(route);
            InetAddress address = route.getDestination().getAddress();
            allowIPv4 |= address instanceof Inet4Address;
            allowIPv6 |= address instanceof Inet6Address;
        }
    }
    if (mConfig.dnsServers != null) {
        for (String dnsServer : mConfig.dnsServers) {
            InetAddress address = InetAddress.parseNumericAddress(dnsServer);
            lp.addDnsServer(address);
            allowIPv4 |= address instanceof Inet4Address;
            allowIPv6 |= address instanceof Inet6Address;
        }
    }
    if (!allowIPv4) {
        lp.addRoute(new RouteInfo(new IpPrefix(Inet4Address.ANY, 0), RTN_UNREACHABLE));
    }
    if (!allowIPv6) {
        lp.addRoute(new RouteInfo(new IpPrefix(Inet6Address.ANY, 0), RTN_UNREACHABLE));
    }
    // Concatenate search domains into a string.
    StringBuilder buffer = new StringBuilder();
    if (mConfig.searchDomains != null) {
        for (String domain : mConfig.searchDomains) {
            buffer.append(domain).append(' ');
        }
    }
    lp.setDomains(buffer.toString().trim());
    return lp;
}

Example 8 with IpPrefix

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

the class RouterAdvertisementDaemon method assembleRaLocked.

private void assembleRaLocked() {
    final ByteBuffer ra = ByteBuffer.wrap(mRA);
    ra.order(ByteOrder.BIG_ENDIAN);
    boolean shouldSendRA = false;
    try {
        putHeader(ra, mRaParams != null && mRaParams.hasDefaultRoute);
        putSlla(ra, mHwAddr);
        mRaLength = ra.position();
        if (mRaParams != null) {
            putMtu(ra, mRaParams.mtu);
            mRaLength = ra.position();
            for (IpPrefix ipp : mRaParams.prefixes) {
                putPio(ra, ipp, DEFAULT_LIFETIME, DEFAULT_LIFETIME);
                mRaLength = ra.position();
                shouldSendRA = true;
            }
            if (mRaParams.dnses.size() > 0) {
                putRdnss(ra, mRaParams.dnses, DEFAULT_LIFETIME);
                mRaLength = ra.position();
                shouldSendRA = true;
            }
        }
        for (IpPrefix ipp : mDeprecatedInfoTracker.getPrefixes()) {
            putPio(ra, ipp, 0, 0);
            mRaLength = ra.position();
            shouldSendRA = true;
        }
        final Set<Inet6Address> deprecatedDnses = mDeprecatedInfoTracker.getDnses();
        if (!deprecatedDnses.isEmpty()) {
            putRdnss(ra, deprecatedDnses, 0);
            mRaLength = ra.position();
            shouldSendRA = true;
        }
    } catch (BufferOverflowException e) {
        // The packet up to mRaLength  is valid, since it has been updated
        // progressively as the RA was built. Log an error, and continue
        // on as best as possible.
        Log.e(TAG, "Could not construct new RA: " + e);
    }
    // We have nothing worth announcing; indicate as much to maybeSendRA().
    if (!shouldSendRA) {
        mRaLength = 0;
    }
}

Example 9 with IpPrefix

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

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 10 with IpPrefix

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

the class IpPrefixTest method testHashCode.

@SmallTest
public void testHashCode() {
    IpPrefix p;
    int oldCode = -1;
    Random random = new Random();
    for (int i = 0; i < 100; i++) {
        if (random.nextBoolean()) {
            // IPv4.
            byte[] b = new byte[4];
            random.nextBytes(b);
            p = new IpPrefix(b, random.nextInt(33));
            assertNotEqual(oldCode, p.hashCode());
            oldCode = p.hashCode();
        } else {
            // IPv6.
            byte[] b = new byte[16];
            random.nextBytes(b);
            p = new IpPrefix(b, random.nextInt(129));
            assertNotEqual(oldCode, p.hashCode());
            oldCode = p.hashCode();
        }
    }
}