Examples with Inet4Address java.net.Inet4Address used on opensource projects

Example 51 with Inet4Address

use of java.net.Inet4Address in project NetGuard by M66B.

the class ServiceSinkhole method getDns.

public static List<InetAddress> getDns(Context context) {
    List<InetAddress> listDns = new ArrayList<>();
    List<String> sysDns = Util.getDefaultDNS(context);
    // Get custom DNS servers
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
    boolean ip6 = prefs.getBoolean("ip6", true);
    String vpnDns1 = prefs.getString("dns", null);
    String vpnDns2 = prefs.getString("dns2", null);
    Log.i(TAG, "DNS system=" + TextUtils.join(",", sysDns) + " VPN1=" + vpnDns1 + " VPN2=" + vpnDns2);
    if (vpnDns1 != null)
        try {
            InetAddress dns = InetAddress.getByName(vpnDns1);
            if (!(dns.isLoopbackAddress() || dns.isAnyLocalAddress()) && (ip6 || dns instanceof Inet4Address))
                listDns.add(dns);
        } catch (Throwable ignored) {
        }
    if (vpnDns2 != null)
        try {
            InetAddress dns = InetAddress.getByName(vpnDns2);
            if (!(dns.isLoopbackAddress() || dns.isAnyLocalAddress()) && (ip6 || dns instanceof Inet4Address))
                listDns.add(dns);
        } catch (Throwable ex) {
            Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
        }
    // Use system DNS servers only when no two custom DNS servers specified
    if (listDns.size() <= 1)
        for (String def_dns : sysDns) try {
            InetAddress ddns = InetAddress.getByName(def_dns);
            if (!listDns.contains(ddns) && !(ddns.isLoopbackAddress() || ddns.isAnyLocalAddress()) && (ip6 || ddns instanceof Inet4Address))
                listDns.add(ddns);
        } catch (Throwable ex) {
            Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
        }
    // Remove local DNS servers when not routing LAN
    boolean lan = prefs.getBoolean("lan", false);
    boolean use_hosts = prefs.getBoolean("filter", false) && prefs.getBoolean("use_hosts", false);
    if (lan && use_hosts) {
        List<InetAddress> listLocal = new ArrayList<>();
        try {
            Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces();
            if (nis != null)
                while (nis.hasMoreElements()) {
                    NetworkInterface ni = nis.nextElement();
                    if (ni != null && ni.isUp() && !ni.isLoopback()) {
                        List<InterfaceAddress> ias = ni.getInterfaceAddresses();
                        if (ias != null)
                            for (InterfaceAddress ia : ias) {
                                InetAddress hostAddress = ia.getAddress();
                                BigInteger host = new BigInteger(1, hostAddress.getAddress());
                                int prefix = ia.getNetworkPrefixLength();
                                BigInteger mask = BigInteger.valueOf(-1).shiftLeft(hostAddress.getAddress().length * 8 - prefix);
                                for (InetAddress dns : listDns) if (hostAddress.getAddress().length == dns.getAddress().length) {
                                    BigInteger ip = new BigInteger(1, dns.getAddress());
                                    if (host.and(mask).equals(ip.and(mask))) {
                                        Log.i(TAG, "Local DNS server host=" + hostAddress + "/" + prefix + " dns=" + dns);
                                        listLocal.add(dns);
                                    }
                                }
                            }
                    }
                }
        } catch (Throwable ex) {
            Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
        }
        List<InetAddress> listDns4 = new ArrayList<>();
        List<InetAddress> listDns6 = new ArrayList<>();
        try {
            listDns4.add(InetAddress.getByName("8.8.8.8"));
            listDns4.add(InetAddress.getByName("8.8.4.4"));
            if (ip6) {
                listDns6.add(InetAddress.getByName("2001:4860:4860::8888"));
                listDns6.add(InetAddress.getByName("2001:4860:4860::8844"));
            }
        } catch (Throwable ex) {
            Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
        }
        for (InetAddress dns : listLocal) {
            listDns.remove(dns);
            if (dns instanceof Inet4Address) {
                if (listDns4.size() > 0) {
                    listDns.add(listDns4.get(0));
                    listDns4.remove(0);
                }
            } else {
                if (listDns6.size() > 0) {
                    listDns.add(listDns6.get(0));
                    listDns6.remove(0);
                }
            }
        }
    }
    return listDns;
}

Example 52 with Inet4Address

use of java.net.Inet4Address in project NetGuard by M66B.

the class ServiceSinkhole method getBuilder.

private Builder getBuilder(List<Rule> listAllowed, List<Rule> listRule) {
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
    boolean subnet = prefs.getBoolean("subnet", false);
    boolean tethering = prefs.getBoolean("tethering", false);
    boolean lan = prefs.getBoolean("lan", false);
    boolean ip6 = prefs.getBoolean("ip6", true);
    boolean filter = prefs.getBoolean("filter", false);
    boolean system = prefs.getBoolean("manage_system", false);
    // Build VPN service
    Builder builder = new Builder();
    builder.setSession(getString(R.string.app_name));
    // VPN address
    String vpn4 = prefs.getString("vpn4", "10.1.10.1");
    Log.i(TAG, "vpn4=" + vpn4);
    builder.addAddress(vpn4, 32);
    if (ip6) {
        String vpn6 = prefs.getString("vpn6", "fd00:1:fd00:1:fd00:1:fd00:1");
        Log.i(TAG, "vpn6=" + vpn6);
        builder.addAddress(vpn6, 128);
    }
    // DNS address
    if (filter)
        for (InetAddress dns : getDns(ServiceSinkhole.this)) {
            if (ip6 || dns instanceof Inet4Address) {
                Log.i(TAG, "dns=" + dns);
                builder.addDnsServer(dns);
            }
        }
    // Subnet routing
    if (subnet) {
        // Exclude IP ranges
        List<IPUtil.CIDR> listExclude = new ArrayList<>();
        // localhost
        listExclude.add(new IPUtil.CIDR("127.0.0.0", 8));
        if (tethering) {
            // USB tethering 192.168.42.x
            // Wi-Fi tethering 192.168.43.x
            listExclude.add(new IPUtil.CIDR("192.168.42.0", 23));
            // Wi-Fi direct 192.168.49.x
            listExclude.add(new IPUtil.CIDR("192.168.49.0", 24));
        }
        if (lan) {
            try {
                Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces();
                while (nis.hasMoreElements()) {
                    NetworkInterface ni = nis.nextElement();
                    if (ni != null && ni.isUp() && !ni.isLoopback() && ni.getName() != null && !ni.getName().startsWith("tun"))
                        for (InterfaceAddress ia : ni.getInterfaceAddresses()) if (ia.getAddress() instanceof Inet4Address) {
                            IPUtil.CIDR local = new IPUtil.CIDR(ia.getAddress(), ia.getNetworkPrefixLength());
                            Log.i(TAG, "Excluding " + ni.getName() + " " + local);
                            listExclude.add(local);
                        }
                }
            } catch (SocketException ex) {
                Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
            }
        }
        // https://en.wikipedia.org/wiki/Mobile_country_code
        Configuration config = getResources().getConfiguration();
        // T-Mobile Wi-Fi calling
        if (config.mcc == 310 && (config.mnc == 160 || config.mnc == 200 || config.mnc == 210 || config.mnc == 220 || config.mnc == 230 || config.mnc == 240 || config.mnc == 250 || config.mnc == 260 || config.mnc == 270 || config.mnc == 310 || config.mnc == 490 || config.mnc == 660 || config.mnc == 800)) {
            listExclude.add(new IPUtil.CIDR("66.94.2.0", 24));
            listExclude.add(new IPUtil.CIDR("66.94.6.0", 23));
            listExclude.add(new IPUtil.CIDR("66.94.8.0", 22));
            listExclude.add(new IPUtil.CIDR("208.54.0.0", 16));
        }
        // Verizon wireless calling
        if ((config.mcc == 310 && (config.mnc == 4 || config.mnc == 5 || config.mnc == 6 || config.mnc == 10 || config.mnc == 12 || config.mnc == 13 || config.mnc == 350 || config.mnc == 590 || config.mnc == 820 || config.mnc == 890 || config.mnc == 910)) || (config.mcc == 311 && (config.mnc == 12 || config.mnc == 110 || (config.mnc >= 270 && config.mnc <= 289) || config.mnc == 390 || (config.mnc >= 480 && config.mnc <= 489) || config.mnc == 590)) || (config.mcc == 312 && (config.mnc == 770))) {
            // 66.174.0.0 - 66.174.255.255
            listExclude.add(new IPUtil.CIDR("66.174.0.0", 16));
            // 69.82.0.0 - 69.83.255.255
            listExclude.add(new IPUtil.CIDR("66.82.0.0", 15));
            // 69.96.0.0 - 69.103.255.255
            listExclude.add(new IPUtil.CIDR("69.96.0.0", 13));
            // 70.192.0.0 - 70.223.255.255
            listExclude.add(new IPUtil.CIDR("70.192.0.0", 11));
            // 97.128.0.0 - 97.255.255.255
            listExclude.add(new IPUtil.CIDR("97.128.0.0", 9));
            // 174.192.0.0 - 174.255.255.255
            listExclude.add(new IPUtil.CIDR("174.192.0.0", 9));
            // 72.96.0.0 - 72.127.255.255
            listExclude.add(new IPUtil.CIDR("72.96.0.0", 9));
            // 75.192.0.0 - 75.255.255.255
            listExclude.add(new IPUtil.CIDR("75.192.0.0", 9));
            // 97.0.0.0 - 97.63.255.255
            listExclude.add(new IPUtil.CIDR("97.0.0.0", 10));
        }
        // Broadcast
        listExclude.add(new IPUtil.CIDR("224.0.0.0", 3));
        Collections.sort(listExclude);
        try {
            InetAddress start = InetAddress.getByName("0.0.0.0");
            for (IPUtil.CIDR exclude : listExclude) {
                Log.i(TAG, "Exclude " + exclude.getStart().getHostAddress() + "..." + exclude.getEnd().getHostAddress());
                for (IPUtil.CIDR include : IPUtil.toCIDR(start, IPUtil.minus1(exclude.getStart()))) try {
                    builder.addRoute(include.address, include.prefix);
                } catch (Throwable ex) {
                    Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
                }
                start = IPUtil.plus1(exclude.getEnd());
            }
            for (IPUtil.CIDR include : IPUtil.toCIDR("224.0.0.0", "255.255.255.255")) try {
                builder.addRoute(include.address, include.prefix);
            } catch (Throwable ex) {
                Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
            }
        } catch (UnknownHostException ex) {
            Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
        }
    } else
        builder.addRoute("0.0.0.0", 0);
    Log.i(TAG, "IPv6=" + ip6);
    if (ip6)
        builder.addRoute("0:0:0:0:0:0:0:0", 0);
    // MTU
    int mtu = jni_get_mtu();
    Log.i(TAG, "MTU=" + mtu);
    builder.setMtu(mtu);
    // Add list of allowed applications
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
        if (last_connected && !filter)
            for (Rule rule : listAllowed) try {
                builder.addDisallowedApplication(rule.info.packageName);
            } catch (PackageManager.NameNotFoundException ex) {
                Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
            }
        else if (filter)
            for (Rule rule : listRule) if (!rule.apply || (!system && rule.system))
                try {
                    Log.i(TAG, "Not routing " + rule.info.packageName);
                    builder.addDisallowedApplication(rule.info.packageName);
                } catch (PackageManager.NameNotFoundException ex) {
                    Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
                }
    // Build configure intent
    Intent configure = new Intent(this, ActivityMain.class);
    PendingIntent pi = PendingIntent.getActivity(this, 0, configure, PendingIntent.FLAG_UPDATE_CURRENT);
    builder.setConfigureIntent(pi);
    return builder;
}

Example 53 with Inet4Address

use of java.net.Inet4Address in project android_frameworks_base by AOSPA.

the class KeepalivePacketData method nattKeepalivePacket.

/**
     * Creates an IPsec NAT-T keepalive packet with the specified parameters.
     */
public static KeepalivePacketData nattKeepalivePacket(InetAddress srcAddress, int srcPort, InetAddress dstAddress, int dstPort) throws InvalidPacketException {
    if (!(srcAddress instanceof Inet4Address) || !(dstAddress instanceof Inet4Address)) {
        throw new InvalidPacketException(ERROR_INVALID_IP_ADDRESS);
    }
    if (dstPort != NATT_PORT) {
        throw new InvalidPacketException(ERROR_INVALID_PORT);
    }
    int length = IPV4_HEADER_LENGTH + UDP_HEADER_LENGTH + 1;
    ByteBuffer buf = ByteBuffer.allocate(length);
    buf.order(ByteOrder.BIG_ENDIAN);
    // IP version and TOS
    buf.putShort((short) 0x4500);
    buf.putShort((short) length);
    // ID, flags, offset
    buf.putInt(0);
    // TTL
    buf.put((byte) 64);
    buf.put((byte) OsConstants.IPPROTO_UDP);
    int ipChecksumOffset = buf.position();
    // IP checksum
    buf.putShort((short) 0);
    buf.put(srcAddress.getAddress());
    buf.put(dstAddress.getAddress());
    buf.putShort((short) srcPort);
    buf.putShort((short) dstPort);
    // UDP length
    buf.putShort((short) (length - 20));
    int udpChecksumOffset = buf.position();
    // UDP checksum
    buf.putShort((short) 0);
    // NAT-T keepalive
    buf.put((byte) 0xff);
    buf.putShort(ipChecksumOffset, IpUtils.ipChecksum(buf, 0));
    buf.putShort(udpChecksumOffset, IpUtils.udpChecksum(buf, 0, IPV4_HEADER_LENGTH));
    return new KeepalivePacketData(srcAddress, srcPort, dstAddress, dstPort, buf.array());
}

Example 54 with Inet4Address

use of java.net.Inet4Address in project android_frameworks_base by AOSPA.

the class WifiDisplayController method getInterfaceAddress.

private static Inet4Address getInterfaceAddress(WifiP2pGroup info) {
    NetworkInterface iface;
    try {
        iface = NetworkInterface.getByName(info.getInterface());
    } catch (SocketException ex) {
        Slog.w(TAG, "Could not obtain address of network interface " + info.getInterface(), ex);
        return null;
    }
    Enumeration<InetAddress> addrs = iface.getInetAddresses();
    while (addrs.hasMoreElements()) {
        InetAddress addr = addrs.nextElement();
        if (addr instanceof Inet4Address) {
            return (Inet4Address) addr;
        }
    }
    Slog.w(TAG, "Could not obtain address of network interface " + info.getInterface() + " because it had no IPv4 addresses.");
    return null;
}

Example 55 with Inet4Address

use of java.net.Inet4Address in project android_frameworks_base by AOSPA.

the class IpConfigStore method readIpAndProxyConfigurations.

public SparseArray<IpConfiguration> readIpAndProxyConfigurations(String filePath) {
    SparseArray<IpConfiguration> networks = new SparseArray<IpConfiguration>();
    DataInputStream in = null;
    try {
        in = new DataInputStream(new BufferedInputStream(new FileInputStream(filePath)));
        int version = in.readInt();
        if (version != 2 && version != 1) {
            loge("Bad version on IP configuration file, ignore read");
            return null;
        }
        while (true) {
            int id = -1;
            // Default is DHCP with no proxy
            IpAssignment ipAssignment = IpAssignment.DHCP;
            ProxySettings proxySettings = ProxySettings.NONE;
            StaticIpConfiguration staticIpConfiguration = new StaticIpConfiguration();
            String proxyHost = null;
            String pacFileUrl = null;
            int proxyPort = -1;
            String exclusionList = null;
            String key;
            do {
                key = in.readUTF();
                try {
                    if (key.equals(ID_KEY)) {
                        id = in.readInt();
                    } else if (key.equals(IP_ASSIGNMENT_KEY)) {
                        ipAssignment = IpAssignment.valueOf(in.readUTF());
                    } else if (key.equals(LINK_ADDRESS_KEY)) {
                        LinkAddress linkAddr = new LinkAddress(NetworkUtils.numericToInetAddress(in.readUTF()), in.readInt());
                        if (linkAddr.getAddress() instanceof Inet4Address && staticIpConfiguration.ipAddress == null) {
                            staticIpConfiguration.ipAddress = linkAddr;
                        } else {
                            loge("Non-IPv4 or duplicate address: " + linkAddr);
                        }
                    } else if (key.equals(GATEWAY_KEY)) {
                        LinkAddress dest = null;
                        InetAddress gateway = null;
                        if (version == 1) {
                            // only supported default gateways - leave the dest/prefix empty
                            gateway = NetworkUtils.numericToInetAddress(in.readUTF());
                            if (staticIpConfiguration.gateway == null) {
                                staticIpConfiguration.gateway = gateway;
                            } else {
                                loge("Duplicate gateway: " + gateway.getHostAddress());
                            }
                        } else {
                            if (in.readInt() == 1) {
                                dest = new LinkAddress(NetworkUtils.numericToInetAddress(in.readUTF()), in.readInt());
                            }
                            if (in.readInt() == 1) {
                                gateway = NetworkUtils.numericToInetAddress(in.readUTF());
                            }
                            RouteInfo route = new RouteInfo(dest, gateway);
                            if (route.isIPv4Default() && staticIpConfiguration.gateway == null) {
                                staticIpConfiguration.gateway = gateway;
                            } else {
                                loge("Non-IPv4 default or duplicate route: " + route);
                            }
                        }
                    } else if (key.equals(DNS_KEY)) {
                        staticIpConfiguration.dnsServers.add(NetworkUtils.numericToInetAddress(in.readUTF()));
                    } else if (key.equals(PROXY_SETTINGS_KEY)) {
                        proxySettings = ProxySettings.valueOf(in.readUTF());
                    } else if (key.equals(PROXY_HOST_KEY)) {
                        proxyHost = in.readUTF();
                    } else if (key.equals(PROXY_PORT_KEY)) {
                        proxyPort = in.readInt();
                    } else if (key.equals(PROXY_PAC_FILE)) {
                        pacFileUrl = in.readUTF();
                    } else if (key.equals(EXCLUSION_LIST_KEY)) {
                        exclusionList = in.readUTF();
                    } else if (key.equals(EOS)) {
                        break;
                    } else {
                        loge("Ignore unknown key " + key + "while reading");
                    }
                } catch (IllegalArgumentException e) {
                    loge("Ignore invalid address while reading" + e);
                }
            } while (true);
            if (id != -1) {
                IpConfiguration config = new IpConfiguration();
                networks.put(id, config);
                switch(ipAssignment) {
                    case STATIC:
                        config.staticIpConfiguration = staticIpConfiguration;
                        config.ipAssignment = ipAssignment;
                        break;
                    case DHCP:
                        config.ipAssignment = ipAssignment;
                        break;
                    case UNASSIGNED:
                        loge("BUG: Found UNASSIGNED IP on file, use DHCP");
                        config.ipAssignment = IpAssignment.DHCP;
                        break;
                    default:
                        loge("Ignore invalid ip assignment while reading.");
                        config.ipAssignment = IpAssignment.UNASSIGNED;
                        break;
                }
                switch(proxySettings) {
                    case STATIC:
                        ProxyInfo proxyInfo = new ProxyInfo(proxyHost, proxyPort, exclusionList);
                        config.proxySettings = proxySettings;
                        config.httpProxy = proxyInfo;
                        break;
                    case PAC:
                        ProxyInfo proxyPacProperties = new ProxyInfo(pacFileUrl);
                        config.proxySettings = proxySettings;
                        config.httpProxy = proxyPacProperties;
                        break;
                    case NONE:
                        config.proxySettings = proxySettings;
                        break;
                    case UNASSIGNED:
                        loge("BUG: Found UNASSIGNED proxy on file, use NONE");
                        config.proxySettings = ProxySettings.NONE;
                        break;
                    default:
                        loge("Ignore invalid proxy settings while reading");
                        config.proxySettings = ProxySettings.UNASSIGNED;
                        break;
                }
            } else {
                if (DBG)
                    log("Missing id while parsing configuration");
            }
        }
    } catch (EOFException ignore) {
    } catch (IOException e) {
        loge("Error parsing configuration: " + e);
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (Exception e) {
            }
        }
    }
    return networks;
}