| /* |
| * Copyright 2008, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "NetUtils" |
| |
| #include "jni.h" |
| #include <utils/misc.h> |
| #include <android_runtime/AndroidRuntime.h> |
| #include <utils/Log.h> |
| #include <arpa/inet.h> |
| #include <cutils/properties.h> |
| |
| extern "C" { |
| int ifc_enable(const char *ifname); |
| int ifc_disable(const char *ifname); |
| 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_get_default_route(const char *ifname); |
| int ifc_remove_default_route(const char *ifname); |
| int ifc_reset_connections(const char *ifname); |
| |
| int dhcp_do_request(const char *ifname, |
| const char *ipaddr, |
| const char *gateway, |
| uint32_t *prefixLength, |
| const char *dns1, |
| const char *dns2, |
| const char *server, |
| uint32_t *lease); |
| int dhcp_stop(const char *ifname); |
| int dhcp_release_lease(const char *ifname); |
| char *dhcp_get_errmsg(); |
| } |
| |
| #define NETUTILS_PKG_NAME "android/net/NetworkUtils" |
| |
| namespace android { |
| |
| /* |
| * The following remembers the jfieldID's of the fields |
| * of the DhcpInfo Java object, so that we don't have |
| * to look them up every time. |
| */ |
| static struct fieldIds { |
| jclass dhcpInfoInternalClass; |
| jmethodID constructorId; |
| jfieldID ipaddress; |
| jfieldID gateway; |
| jfieldID prefixLength; |
| jfieldID dns1; |
| jfieldID dns2; |
| jfieldID serverAddress; |
| jfieldID leaseDuration; |
| } dhcpInfoInternalFieldIds; |
| |
| static jint android_net_utils_enableInterface(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::ifc_enable(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jint)result; |
| } |
| |
| static jint android_net_utils_disableInterface(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::ifc_disable(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jint)result; |
| } |
| |
| 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); |
| 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; |
| } |
| |
| static jint android_net_utils_removeHostRoutes(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::ifc_remove_host_routes(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jint)result; |
| } |
| |
| static jint android_net_utils_getDefaultRoute(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::ifc_get_default_route(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jint)result; |
| } |
| |
| static jint android_net_utils_removeDefaultRoute(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::ifc_remove_default_route(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jint)result; |
| } |
| |
| static jint android_net_utils_resetConnections(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::ifc_reset_connections(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jint)result; |
| } |
| |
| static jboolean android_net_utils_runDhcp(JNIEnv* env, jobject clazz, jstring ifname, jobject info) |
| { |
| int result; |
| char ipaddr[PROPERTY_VALUE_MAX]; |
| uint32_t prefixLength; |
| char gateway[PROPERTY_VALUE_MAX]; |
| char dns1[PROPERTY_VALUE_MAX]; |
| char dns2[PROPERTY_VALUE_MAX]; |
| char server[PROPERTY_VALUE_MAX]; |
| uint32_t lease; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| if (nameStr == NULL) return (jboolean)false; |
| |
| result = ::dhcp_do_request(nameStr, ipaddr, gateway, &prefixLength, |
| dns1, dns2, server, &lease); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| if (result == 0 && dhcpInfoInternalFieldIds.dhcpInfoInternalClass != NULL) { |
| env->SetObjectField(info, dhcpInfoInternalFieldIds.ipaddress, env->NewStringUTF(ipaddr)); |
| env->SetObjectField(info, dhcpInfoInternalFieldIds.gateway, env->NewStringUTF(gateway)); |
| env->SetIntField(info, dhcpInfoInternalFieldIds.prefixLength, prefixLength); |
| env->SetObjectField(info, dhcpInfoInternalFieldIds.dns1, env->NewStringUTF(dns1)); |
| env->SetObjectField(info, dhcpInfoInternalFieldIds.dns2, env->NewStringUTF(dns2)); |
| env->SetObjectField(info, dhcpInfoInternalFieldIds.serverAddress, |
| env->NewStringUTF(server)); |
| env->SetIntField(info, dhcpInfoInternalFieldIds.leaseDuration, lease); |
| } |
| return (jboolean)(result == 0); |
| } |
| |
| static jboolean android_net_utils_stopDhcp(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::dhcp_stop(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jboolean)(result == 0); |
| } |
| |
| static jboolean android_net_utils_releaseDhcpLease(JNIEnv* env, jobject clazz, jstring ifname) |
| { |
| int result; |
| |
| const char *nameStr = env->GetStringUTFChars(ifname, NULL); |
| result = ::dhcp_release_lease(nameStr); |
| env->ReleaseStringUTFChars(ifname, nameStr); |
| return (jboolean)(result == 0); |
| } |
| |
| static jstring android_net_utils_getDhcpError(JNIEnv* env, jobject clazz) |
| { |
| return env->NewStringUTF(::dhcp_get_errmsg()); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| /* |
| * JNI registration. |
| */ |
| static JNINativeMethod gNetworkUtilMethods[] = { |
| /* name, signature, funcPtr */ |
| |
| { "enableInterface", "(Ljava/lang/String;)I", (void *)android_net_utils_enableInterface }, |
| { "disableInterface", "(Ljava/lang/String;)I", (void *)android_net_utils_disableInterface }, |
| { "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 }, |
| { "getDefaultRouteNative", "(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 }, |
| { "runDhcp", "(Ljava/lang/String;Landroid/net/DhcpInfoInternal;)Z", (void *)android_net_utils_runDhcp }, |
| { "stopDhcp", "(Ljava/lang/String;)Z", (void *)android_net_utils_stopDhcp }, |
| { "releaseDhcpLease", "(Ljava/lang/String;)Z", (void *)android_net_utils_releaseDhcpLease }, |
| { "getDhcpError", "()Ljava/lang/String;", (void*) android_net_utils_getDhcpError }, |
| }; |
| |
| int register_android_net_NetworkUtils(JNIEnv* env) |
| { |
| jclass netutils = env->FindClass(NETUTILS_PKG_NAME); |
| LOG_FATAL_IF(netutils == NULL, "Unable to find class " NETUTILS_PKG_NAME); |
| |
| dhcpInfoInternalFieldIds.dhcpInfoInternalClass = env->FindClass("android/net/DhcpInfoInternal"); |
| if (dhcpInfoInternalFieldIds.dhcpInfoInternalClass != NULL) { |
| dhcpInfoInternalFieldIds.constructorId = env->GetMethodID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "<init>", "()V"); |
| dhcpInfoInternalFieldIds.ipaddress = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "ipAddress", "Ljava/lang/String;"); |
| dhcpInfoInternalFieldIds.gateway = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "gateway", "Ljava/lang/String;"); |
| dhcpInfoInternalFieldIds.prefixLength = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "prefixLength", "I"); |
| dhcpInfoInternalFieldIds.dns1 = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "dns1", "Ljava/lang/String;"); |
| dhcpInfoInternalFieldIds.dns2 = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "dns2", "Ljava/lang/String;"); |
| dhcpInfoInternalFieldIds.serverAddress = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "serverAddress", "Ljava/lang/String;"); |
| dhcpInfoInternalFieldIds.leaseDuration = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "leaseDuration", "I"); |
| } |
| |
| return AndroidRuntime::registerNativeMethods(env, |
| NETUTILS_PKG_NAME, gNetworkUtilMethods, NELEM(gNetworkUtilMethods)); |
| } |
| |
| }; // namespace android |