core/jni/android_net_NetUtils.cpp - platform/frameworks/base - Git at Google

 /*
  * 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>

 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_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);
 int ifc_configure(const char *ifname, in_addr_t ipaddr, in_addr_t netmask, in_addr_t gateway, in_addr_t dns1, in_addr_t dns2);

 int dhcp_do_request(const char *ifname,
                     in_addr_t *ipaddr,
                     in_addr_t *gateway,
                     in_addr_t *mask,
                     in_addr_t *dns1,
                     in_addr_t *dns2,
                     in_addr_t *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 dhcpInfoClass;
     jmethodID constructorId;
     jfieldID ipaddress;
     jfieldID gateway;
     jfieldID netmask;
     jfieldID dns1;
     jfieldID dns2;
     jfieldID serverAddress;
     jfieldID leaseDuration;
 } dhcpInfoFieldIds;

 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_addHostRoute(JNIEnv* env, jobject clazz, jstring ifname, jint addr)
 {
     int result;

     const char *nameStr = env->GetStringUTFChars(ifname, NULL);
     result = ::ifc_add_host_route(nameStr, addr);
     env->ReleaseStringUTFChars(ifname, nameStr);
     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_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;

     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;
     in_addr_t ipaddr, gateway, mask, dns1, dns2, server;
     uint32_t lease;

     const char *nameStr = env->GetStringUTFChars(ifname, NULL);
     result = ::dhcp_do_request(nameStr, &ipaddr, &gateway, &mask,
                                         &dns1, &dns2, &server, &lease);
     env->ReleaseStringUTFChars(ifname, nameStr);
     if (result == 0 && dhcpInfoFieldIds.dhcpInfoClass != NULL) {
         env->SetIntField(info, dhcpInfoFieldIds.ipaddress, ipaddr);
         env->SetIntField(info, dhcpInfoFieldIds.gateway, gateway);
         env->SetIntField(info, dhcpInfoFieldIds.netmask, mask);
         env->SetIntField(info, dhcpInfoFieldIds.dns1, dns1);
         env->SetIntField(info, dhcpInfoFieldIds.dns2, dns2);
         env->SetIntField(info, dhcpInfoFieldIds.serverAddress, server);
         env->SetIntField(info, dhcpInfoFieldIds.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());
 }

 static jboolean android_net_utils_configureInterface(JNIEnv* env,
         jobject clazz,
         jstring ifname,
         jint ipaddr,
         jint mask,
         jint gateway,
         jint dns1,
         jint dns2)
 {
     int result;
     uint32_t lease;

     const char *nameStr = env->GetStringUTFChars(ifname, NULL);
     result = ::ifc_configure(nameStr, ipaddr, mask, gateway, dns1, dns2);
     env->ReleaseStringUTFChars(ifname, nameStr);
     return (jboolean)(result == 0);
 }

 // ----------------------------------------------------------------------------

 /*
  * 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 },
     { "addHostRoute", "(Ljava/lang/String;I)I",  (void *)android_net_utils_addHostRoute },
     { "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 },
     { "runDhcp", "(Ljava/lang/String;Landroid/net/DhcpInfo;)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 },
     { "configureNative", "(Ljava/lang/String;IIIII)Z",  (void *)android_net_utils_configureInterface },
     { "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);

     dhcpInfoFieldIds.dhcpInfoClass = env->FindClass("android/net/DhcpInfo");
     if (dhcpInfoFieldIds.dhcpInfoClass != NULL) {
         dhcpInfoFieldIds.constructorId = env->GetMethodID(dhcpInfoFieldIds.dhcpInfoClass, "<init>", "()V");
         dhcpInfoFieldIds.ipaddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "ipAddress", "I");
         dhcpInfoFieldIds.gateway = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "gateway", "I");
         dhcpInfoFieldIds.netmask = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "netmask", "I");
         dhcpInfoFieldIds.dns1 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns1", "I");
         dhcpInfoFieldIds.dns2 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns2", "I");
         dhcpInfoFieldIds.serverAddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "serverAddress", "I");
         dhcpInfoFieldIds.leaseDuration = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "leaseDuration", "I");
     }

     return AndroidRuntime::registerNativeMethods(env,
             NETUTILS_PKG_NAME, gNetworkUtilMethods, NELEM(gNetworkUtilMethods));
 }

 }; // namespace android
	/*
	* 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>

	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_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);
	int ifc_configure(const char *ifname, in_addr_t ipaddr, in_addr_t netmask, in_addr_t gateway, in_addr_t dns1, in_addr_t dns2);

	int dhcp_do_request(const char *ifname,
	in_addr_t *ipaddr,
	in_addr_t *gateway,
	in_addr_t *mask,
	in_addr_t *dns1,
	in_addr_t *dns2,
	in_addr_t *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 dhcpInfoClass;
	jmethodID constructorId;
	jfieldID ipaddress;
	jfieldID gateway;
	jfieldID netmask;
	jfieldID dns1;
	jfieldID dns2;
	jfieldID serverAddress;
	jfieldID leaseDuration;
	} dhcpInfoFieldIds;

	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_addHostRoute(JNIEnv* env, jobject clazz, jstring ifname, jint addr)
	{
	int result;

	const char *nameStr = env->GetStringUTFChars(ifname, NULL);
	result = ::ifc_add_host_route(nameStr, addr);
	env->ReleaseStringUTFChars(ifname, nameStr);
	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_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;

	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;
	in_addr_t ipaddr, gateway, mask, dns1, dns2, server;
	uint32_t lease;

	const char *nameStr = env->GetStringUTFChars(ifname, NULL);
	result = ::dhcp_do_request(nameStr, &ipaddr, &gateway, &mask,
	&dns1, &dns2, &server, &lease);
	env->ReleaseStringUTFChars(ifname, nameStr);
	if (result == 0 && dhcpInfoFieldIds.dhcpInfoClass != NULL) {
	env->SetIntField(info, dhcpInfoFieldIds.ipaddress, ipaddr);
	env->SetIntField(info, dhcpInfoFieldIds.gateway, gateway);
	env->SetIntField(info, dhcpInfoFieldIds.netmask, mask);
	env->SetIntField(info, dhcpInfoFieldIds.dns1, dns1);
	env->SetIntField(info, dhcpInfoFieldIds.dns2, dns2);
	env->SetIntField(info, dhcpInfoFieldIds.serverAddress, server);
	env->SetIntField(info, dhcpInfoFieldIds.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());
	}

	static jboolean android_net_utils_configureInterface(JNIEnv* env,
	jobject clazz,
	jstring ifname,
	jint ipaddr,
	jint mask,
	jint gateway,
	jint dns1,
	jint dns2)
	{
	int result;
	uint32_t lease;

	const char *nameStr = env->GetStringUTFChars(ifname, NULL);
	result = ::ifc_configure(nameStr, ipaddr, mask, gateway, dns1, dns2);
	env->ReleaseStringUTFChars(ifname, nameStr);
	return (jboolean)(result == 0);
	}

	// ----------------------------------------------------------------------------

	/*
	* 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 },
	{ "addHostRoute", "(Ljava/lang/String;I)I", (void *)android_net_utils_addHostRoute },
	{ "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 },
	{ "runDhcp", "(Ljava/lang/String;Landroid/net/DhcpInfo;)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 },
	{ "configureNative", "(Ljava/lang/String;IIIII)Z", (void *)android_net_utils_configureInterface },
	{ "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);

	dhcpInfoFieldIds.dhcpInfoClass = env->FindClass("android/net/DhcpInfo");
	if (dhcpInfoFieldIds.dhcpInfoClass != NULL) {
	dhcpInfoFieldIds.constructorId = env->GetMethodID(dhcpInfoFieldIds.dhcpInfoClass, "<init>", "()V");
	dhcpInfoFieldIds.ipaddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "ipAddress", "I");
	dhcpInfoFieldIds.gateway = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "gateway", "I");
	dhcpInfoFieldIds.netmask = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "netmask", "I");
	dhcpInfoFieldIds.dns1 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns1", "I");
	dhcpInfoFieldIds.dns2 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns2", "I");
	dhcpInfoFieldIds.serverAddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "serverAddress", "I");
	dhcpInfoFieldIds.leaseDuration = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "leaseDuration", "I");
	}

	return AndroidRuntime::registerNativeMethods(env,
	NETUTILS_PKG_NAME, gNetworkUtilMethods, NELEM(gNetworkUtilMethods));
	}

	}; // namespace android