diff options
Diffstat (limited to 'core')
-rw-r--r-- | core/java/android/net/ConnectivityManager.java | 26 | ||||
-rw-r--r-- | core/java/android/net/IConnectivityManager.aidl | 2 | ||||
-rw-r--r-- | core/java/android/net/MobileDataStateTracker.java | 12 | ||||
-rw-r--r-- | core/java/android/net/NetworkStateTracker.java | 29 | ||||
-rw-r--r-- | core/java/android/net/NetworkUtils.java | 110 | ||||
-rw-r--r-- | core/jni/android_net_NetUtils.cpp | 31 |
6 files changed, 157 insertions, 53 deletions
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java index 280ded6..5b0f60f 100644 --- a/core/java/android/net/ConnectivityManager.java +++ b/core/java/android/net/ConnectivityManager.java @@ -21,6 +21,9 @@ import android.annotation.SdkConstant.SdkConstantType; import android.os.Binder; import android.os.RemoteException; +import java.net.InetAddress; +import java.net.UnknownHostException; + /** * Class that answers queries about the state of network connectivity. It also * notifies applications when network connectivity changes. Get an instance @@ -309,8 +312,29 @@ public class ConnectivityManager * @return {@code true} on success, {@code false} on failure */ public boolean requestRouteToHost(int networkType, int hostAddress) { + InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); + + if (inetAddress == null) { + return false; + } + + return requestRouteToHostAddress(networkType, inetAddress); + } + + /** + * Ensure that a network route exists to deliver traffic to the specified + * host via the specified network interface. An attempt to add a route that + * already exists is ignored, but treated as successful. + * @param networkType the type of the network over which traffic to the specified + * host is to be routed + * @param hostAddress the IP address of the host to which the route is desired + * @return {@code true} on success, {@code false} on failure + * @hide + */ + public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) { + byte[] address = hostAddress.getAddress(); try { - return mService.requestRouteToHost(networkType, hostAddress); + return mService.requestRouteToHostAddress(networkType, address); } catch (RemoteException e) { return false; } diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl index b05c2ed..0eb3afd 100644 --- a/core/java/android/net/IConnectivityManager.aidl +++ b/core/java/android/net/IConnectivityManager.aidl @@ -47,6 +47,8 @@ interface IConnectivityManager boolean requestRouteToHost(int networkType, int hostAddress); + boolean requestRouteToHostAddress(int networkType, in byte[] hostAddress); + boolean getBackgroundDataSetting(); void setBackgroundDataSetting(boolean allowBackgroundData); diff --git a/core/java/android/net/MobileDataStateTracker.java b/core/java/android/net/MobileDataStateTracker.java index eb7117b..004cdb7 100644 --- a/core/java/android/net/MobileDataStateTracker.java +++ b/core/java/android/net/MobileDataStateTracker.java @@ -16,6 +16,8 @@ package android.net; +import java.net.InetAddress; + import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; @@ -23,7 +25,6 @@ import android.content.IntentFilter; import android.os.RemoteException; import android.os.Handler; import android.os.ServiceManager; -import android.os.SystemProperties; import com.android.internal.telephony.ITelephony; import com.android.internal.telephony.Phone; import com.android.internal.telephony.TelephonyIntents; @@ -489,17 +490,16 @@ public class MobileDataStateTracker extends NetworkStateTracker { * Ensure that a network route exists to deliver traffic to the specified * host via the mobile data network. * @param hostAddress the IP address of the host to which the route is desired, - * in network byte order. * @return {@code true} on success, {@code false} on failure */ @Override - public boolean requestRouteToHost(int hostAddress) { + public boolean requestRouteToHost(InetAddress hostAddress) { if (DBG) { - Log.d(TAG, "Requested host route to " + Integer.toHexString(hostAddress) + + Log.d(TAG, "Requested host route to " + hostAddress.getHostAddress() + " for " + mApnType + "(" + mInterfaceName + ")"); } - if (mInterfaceName != null && hostAddress != -1) { - return NetworkUtils.addHostRoute(mInterfaceName, hostAddress) == 0; + if (mInterfaceName != null) { + return NetworkUtils.addHostRoute(mInterfaceName, hostAddress, null); } else { return false; } diff --git a/core/java/android/net/NetworkStateTracker.java b/core/java/android/net/NetworkStateTracker.java index 0277d2d..838696d 100644 --- a/core/java/android/net/NetworkStateTracker.java +++ b/core/java/android/net/NetworkStateTracker.java @@ -18,13 +18,14 @@ package android.net; import java.io.FileWriter; import java.io.IOException; +import java.net.InetAddress; +import java.net.UnknownHostException; import android.os.Handler; import android.os.Message; import android.os.SystemProperties; import android.content.Context; import android.text.TextUtils; -import android.util.Config; import android.util.Log; @@ -128,13 +129,18 @@ public abstract class NetworkStateTracker extends Handler { } if (mInterfaceName != null && !mPrivateDnsRouteSet) { for (String addrString : getNameServers()) { - int addr = NetworkUtils.lookupHost(addrString); - if (addr != -1 && addr != 0) { - if (DBG) Log.d(TAG, " adding "+addrString+" ("+addr+")"); - NetworkUtils.addHostRoute(mInterfaceName, addr); + if (addrString != null) { + try { + InetAddress inetAddress = InetAddress.getByName(addrString); + if (DBG) Log.d(TAG, " adding " + addrString); + if (NetworkUtils.addHostRoute(mInterfaceName, inetAddress, null)) { + mPrivateDnsRouteSet = true; + } + } catch (UnknownHostException e) { + if (DBG) Log.d(TAG, " DNS address " + addrString + " : Exception " + e); + } } } - mPrivateDnsRouteSet = true; } } @@ -157,7 +163,14 @@ public abstract class NetworkStateTracker extends Handler { Log.d(TAG, "addDefaultRoute for " + mNetworkInfo.getTypeName() + " (" + mInterfaceName + "), GatewayAddr=" + mDefaultGatewayAddr); } - NetworkUtils.setDefaultRoute(mInterfaceName, mDefaultGatewayAddr); + InetAddress inetAddress = NetworkUtils.intToInetAddress(mDefaultGatewayAddr); + if (inetAddress == null) { + if (DBG) Log.d(TAG, " Unable to add default route. mDefaultGatewayAddr Error"); + } else { + if (!NetworkUtils.addDefaultRoute(mInterfaceName, inetAddress) && DBG) { + Log.d(TAG, " Unable to add default route."); + } + } } } @@ -394,7 +407,7 @@ public abstract class NetworkStateTracker extends Handler { * @param hostAddress the IP address of the host to which the route is desired * @return {@code true} on success, {@code false} on failure */ - public boolean requestRouteToHost(int hostAddress) { + public boolean requestRouteToHost(InetAddress hostAddress) { return false; } diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java index e4f3d5c..5d4b099 100644 --- a/core/java/android/net/NetworkUtils.java +++ b/core/java/android/net/NetworkUtils.java @@ -17,25 +17,39 @@ package android.net; import java.net.InetAddress; +import java.net.Inet4Address; +import java.net.Inet6Address; import java.net.UnknownHostException; +import android.util.Log; + /** * Native methods for managing network interfaces. * * {@hide} */ public class NetworkUtils { + + private static final String TAG = "NetworkUtils"; + /** Bring the named network interface up. */ public native static int enableInterface(String interfaceName); /** Bring the named network interface down. */ public native static int disableInterface(String interfaceName); - /** Add a route to the specified host via the named interface. */ - public native static int addHostRoute(String interfaceName, int hostaddr); - - /** Add a default route for the named interface. */ - public native static int setDefaultRoute(String interfaceName, int gwayAddr); + /** + * Add a route to the routing table. + * + * @param interfaceName the interface to route through. + * @param dst the network or host to route to. May be IPv4 or IPv6, e.g. + * "0.0.0.0" or "2001:4860::". + * @param prefixLength the prefix length of the route. + * @param gw the gateway to use, e.g., "192.168.251.1". If null, + * indicates a directly-connected route. + */ + public native static int addRoute(String interfaceName, String dst, + int prefixLength, String gw); /** Return the gateway address for the default route for the named interface. */ public native static int getDefaultRoute(String interfaceName); @@ -106,27 +120,79 @@ public class NetworkUtils { String interfaceName, int ipAddress, int netmask, int gateway, int dns1, int dns2); /** - * Look up a host name and return the result as an int. Works if the argument - * is an IP address in dot notation. Obviously, this can only be used for IPv4 - * addresses. - * @param hostname the name of the host (or the IP address) - * @return the IP address as an {@code int} in network byte order + * Convert a IPv4 address from an integer to an InetAddress. + * @param hostAddr is an Int corresponding to the IPv4 address in network byte order + * @return the IP address as an {@code InetAddress}, returns null if + * unable to convert or if the int is an invalid address. */ - public static int lookupHost(String hostname) { + public static InetAddress intToInetAddress(int hostAddress) { InetAddress inetAddress; + byte[] addressBytes = { (byte)(0xff & hostAddress), + (byte)(0xff & (hostAddress >> 8)), + (byte)(0xff & (hostAddress >> 16)), + (byte)(0xff & (hostAddress >> 24)) }; + try { - inetAddress = InetAddress.getByName(hostname); - } catch (UnknownHostException e) { - return -1; + inetAddress = InetAddress.getByAddress(addressBytes); + } catch(UnknownHostException e) { + return null; + } + + return inetAddress; + } + + /** + * Add a default route through the specified gateway. + * @param interfaceName interface on which the route should be added + * @param gw the IP address of the gateway to which the route is desired, + * @return {@code true} on success, {@code false} on failure + */ + public static boolean addDefaultRoute(String interfaceName, InetAddress gw) { + String dstStr; + String gwStr = gw.getHostAddress(); + + if (gw instanceof Inet4Address) { + dstStr = "0.0.0.0"; + } else if (gw instanceof Inet6Address) { + dstStr = "::"; + } else { + Log.w(TAG, "addDefaultRoute failure: address is neither IPv4 nor IPv6" + + "(" + gwStr + ")"); + return false; + } + return addRoute(interfaceName, dstStr, 0, gwStr) == 0; + } + + /** + * Add a host route. + * @param interfaceName interface on which the route should be added + * @param dst the IP address of the host to which the route is desired, + * this should not be null. + * @param gw the IP address of the gateway to which the route is desired, + * if null, indicates a directly-connected route. + * @return {@code true} on success, {@code false} on failure + */ + public static boolean addHostRoute(String interfaceName, InetAddress dst, + InetAddress gw) { + if (dst == null) { + Log.w(TAG, "addHostRoute: dst should not be null"); + return false; + } + + int prefixLength; + String dstStr = dst.getHostAddress(); + String gwStr = (gw != null) ? gw.getHostAddress() : null; + + if (dst instanceof Inet4Address) { + prefixLength = 32; + } else if (dst instanceof Inet6Address) { + prefixLength = 128; + } else { + Log.w(TAG, "addHostRoute failure: address is neither IPv4 nor IPv6" + + "(" + dst + ")"); + return false; } - byte[] addrBytes; - int addr; - addrBytes = inetAddress.getAddress(); - addr = ((addrBytes[3] & 0xff) << 24) - | ((addrBytes[2] & 0xff) << 16) - | ((addrBytes[1] & 0xff) << 8) - | (addrBytes[0] & 0xff); - return addr; + return addRoute(interfaceName, dstStr, prefixLength, gwStr) == 0; } public static int v4StringToInt(String str) { diff --git a/core/jni/android_net_NetUtils.cpp b/core/jni/android_net_NetUtils.cpp index feb0dad..6575b9a 100644 --- a/core/jni/android_net_NetUtils.cpp +++ b/core/jni/android_net_NetUtils.cpp @@ -25,9 +25,8 @@ extern "C" { int ifc_enable(const char *ifname); int ifc_disable(const char *ifname); -int ifc_add_host_route(const char *ifname, uint32_t addr); +int ifc_add_route(const char *ifname, const char *destStr, uint32_t prefixLen, const char *gwStr); int ifc_remove_host_routes(const char *ifname); -int ifc_set_default_route(const char *ifname, uint32_t gateway); int ifc_get_default_route(const char *ifname); int ifc_remove_default_route(const char *ifname); int ifc_reset_connections(const char *ifname); @@ -87,13 +86,23 @@ static jint android_net_utils_disableInterface(JNIEnv* env, jobject clazz, jstri return (jint)result; } -static jint android_net_utils_addHostRoute(JNIEnv* env, jobject clazz, jstring ifname, jint addr) +static jint android_net_utils_addRoute(JNIEnv* env, jobject clazz, jstring ifname, + jstring dst, jint prefixLength, jstring gw) { int result; const char *nameStr = env->GetStringUTFChars(ifname, NULL); - result = ::ifc_add_host_route(nameStr, addr); + const char *dstStr = env->GetStringUTFChars(dst, NULL); + const char *gwStr = NULL; + if (gw != NULL) { + gwStr = env->GetStringUTFChars(gw, NULL); + } + result = ::ifc_add_route(nameStr, dstStr, prefixLength, gwStr); env->ReleaseStringUTFChars(ifname, nameStr); + env->ReleaseStringUTFChars(dst, dstStr); + if (gw != NULL) { + env->ReleaseStringUTFChars(gw, gwStr); + } return (jint)result; } @@ -107,16 +116,6 @@ static jint android_net_utils_removeHostRoutes(JNIEnv* env, jobject clazz, jstri return (jint)result; } -static jint android_net_utils_setDefaultRoute(JNIEnv* env, jobject clazz, jstring ifname, jint gateway) -{ - int result; - - const char *nameStr = env->GetStringUTFChars(ifname, NULL); - result = ::ifc_set_default_route(nameStr, gateway); - env->ReleaseStringUTFChars(ifname, nameStr); - return (jint)result; -} - static jint android_net_utils_getDefaultRoute(JNIEnv* env, jobject clazz, jstring ifname) { int result; @@ -222,9 +221,9 @@ static JNINativeMethod gNetworkUtilMethods[] = { { "enableInterface", "(Ljava/lang/String;)I", (void *)android_net_utils_enableInterface }, { "disableInterface", "(Ljava/lang/String;)I", (void *)android_net_utils_disableInterface }, - { "addHostRoute", "(Ljava/lang/String;I)I", (void *)android_net_utils_addHostRoute }, + { "addRoute", "(Ljava/lang/String;Ljava/lang/String;ILjava/lang/String;)I", + (void *)android_net_utils_addRoute }, { "removeHostRoutes", "(Ljava/lang/String;)I", (void *)android_net_utils_removeHostRoutes }, - { "setDefaultRoute", "(Ljava/lang/String;I)I", (void *)android_net_utils_setDefaultRoute }, { "getDefaultRoute", "(Ljava/lang/String;)I", (void *)android_net_utils_getDefaultRoute }, { "removeDefaultRoute", "(Ljava/lang/String;)I", (void *)android_net_utils_removeDefaultRoute }, { "resetConnections", "(Ljava/lang/String;)I", (void *)android_net_utils_resetConnections }, |