Initial Contribution

1 files changed, 235 insertions, 0 deletions

diff --git a/core/jni/android_net_NetUtils.cpp b/core/jni/android_net_NetUtils.cpp
new file mode 100644
index 0000000..417ce54
--- /dev/null
+++ b/core/jni/android_net_NetUtils.cpp
@@ -0,0 +1,235 @@
+/*
+ * 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_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);
+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_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, jobject info)
+{
+    int result;
+
+    const char *nameStr = env->GetStringUTFChars(ifname, NULL);
+    result = ::dhcp_stop(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 */
+
+    { "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 },
+    { "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