--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/unix/native/libnet/NetworkInterface.c Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,2130 @@
+/*
+ * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+#include <arpa/inet.h>
+#include <errno.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+
+#if defined(_AIX)
+#include <netinet/in6_var.h>
+#include <sys/ndd_var.h>
+#include <sys/kinfo.h>
+#endif
+
+#if defined(__solaris__)
+#include <stropts.h>
+#include <sys/dlpi.h>
+#include <sys/sockio.h>
+#endif
+
+#if defined(_ALLBSD_SOURCE)
+#include <net/ethernet.h>
+#include <net/if_dl.h>
+#include <ifaddrs.h>
+#endif
+
+#include "net_util.h"
+
+#include "java_net_InetAddress.h"
+
+#if defined(__linux__)
+ #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
+#elif defined(__solaris__)
+ #ifndef SIOCGLIFHWADDR
+ #define SIOCGLIFHWADDR _IOWR('i', 192, struct lifreq)
+ #endif
+ #define DEV_PREFIX "/dev/"
+#endif
+
+#ifdef LIFNAMSIZ
+ #define IFNAMESIZE LIFNAMSIZ
+#else
+ #define IFNAMESIZE IFNAMSIZ
+#endif
+
+#define CHECKED_MALLOC3(_pointer, _type, _size) \
+ do { \
+ _pointer = (_type)malloc(_size); \
+ if (_pointer == NULL) { \
+ JNU_ThrowOutOfMemoryError(env, "Native heap allocation failed"); \
+ return ifs; /* return untouched list */ \
+ } \
+ } while(0)
+
+typedef struct _netaddr {
+ struct sockaddr *addr;
+ struct sockaddr *brdcast;
+ short mask;
+ int family; /* to make searches simple */
+ struct _netaddr *next;
+} netaddr;
+
+typedef struct _netif {
+ char *name;
+ int index;
+ char virtual;
+ netaddr *addr;
+ struct _netif *childs;
+ struct _netif *next;
+} netif;
+
+/************************************************************************
+ * NetworkInterface
+ */
+
+#include "java_net_NetworkInterface.h"
+
+/************************************************************************
+ * NetworkInterface
+ */
+jclass ni_class;
+jfieldID ni_nameID;
+jfieldID ni_indexID;
+jfieldID ni_descID;
+jfieldID ni_addrsID;
+jfieldID ni_bindsID;
+jfieldID ni_virutalID;
+jfieldID ni_childsID;
+jfieldID ni_parentID;
+jfieldID ni_defaultIndexID;
+jmethodID ni_ctrID;
+
+static jclass ni_ibcls;
+static jmethodID ni_ibctrID;
+static jfieldID ni_ibaddressID;
+static jfieldID ni_ib4broadcastID;
+static jfieldID ni_ib4maskID;
+
+/** Private methods declarations **/
+static jobject createNetworkInterface(JNIEnv *env, netif *ifs);
+static int getFlags0(JNIEnv *env, jstring ifname);
+
+static netif *enumInterfaces(JNIEnv *env);
+static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs);
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs);
+
+static netif *addif(JNIEnv *env, int sock, const char *if_name, netif *ifs,
+ struct sockaddr *ifr_addrP,
+ struct sockaddr *ifr_broadaddrP,
+ int family, short prefix);
+static void freeif(netif *ifs);
+
+static int openSocket(JNIEnv *env, int proto);
+static int openSocketWithFallback(JNIEnv *env, const char *ifname);
+
+static short translateIPv4AddressToPrefix(struct sockaddr_in *addr);
+static short translateIPv6AddressToPrefix(struct sockaddr_in6 *addr);
+
+static int getIndex(int sock, const char *ifname);
+static int getFlags(int sock, const char *ifname, int *flags);
+static int getMacAddress(JNIEnv *env, const char *ifname,
+ const struct in_addr *addr, unsigned char *buf);
+static int getMTU(JNIEnv *env, int sock, const char *ifname);
+
+#if defined(__solaris__)
+static int getMacFromDevice(JNIEnv *env, const char *ifname,
+ unsigned char *retbuf);
+#endif
+
+/******************* Java entry points *****************************/
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: init
+ * Signature: ()V
+ */
+JNIEXPORT void JNICALL Java_java_net_NetworkInterface_init
+ (JNIEnv *env, jclass cls)
+{
+ ni_class = (*env)->FindClass(env, "java/net/NetworkInterface");
+ CHECK_NULL(ni_class);
+ ni_class = (*env)->NewGlobalRef(env, ni_class);
+ CHECK_NULL(ni_class);
+ ni_nameID = (*env)->GetFieldID(env, ni_class, "name", "Ljava/lang/String;");
+ CHECK_NULL(ni_nameID);
+ ni_indexID = (*env)->GetFieldID(env, ni_class, "index", "I");
+ CHECK_NULL(ni_indexID);
+ ni_addrsID = (*env)->GetFieldID(env, ni_class, "addrs",
+ "[Ljava/net/InetAddress;");
+ CHECK_NULL(ni_addrsID);
+ ni_bindsID = (*env)->GetFieldID(env, ni_class, "bindings",
+ "[Ljava/net/InterfaceAddress;");
+ CHECK_NULL(ni_bindsID);
+ ni_descID = (*env)->GetFieldID(env, ni_class, "displayName",
+ "Ljava/lang/String;");
+ CHECK_NULL(ni_descID);
+ ni_virutalID = (*env)->GetFieldID(env, ni_class, "virtual", "Z");
+ CHECK_NULL(ni_virutalID);
+ ni_childsID = (*env)->GetFieldID(env, ni_class, "childs",
+ "[Ljava/net/NetworkInterface;");
+ CHECK_NULL(ni_childsID);
+ ni_parentID = (*env)->GetFieldID(env, ni_class, "parent",
+ "Ljava/net/NetworkInterface;");
+ CHECK_NULL(ni_parentID);
+ ni_ctrID = (*env)->GetMethodID(env, ni_class, "<init>", "()V");
+ CHECK_NULL(ni_ctrID);
+ ni_ibcls = (*env)->FindClass(env, "java/net/InterfaceAddress");
+ CHECK_NULL(ni_ibcls);
+ ni_ibcls = (*env)->NewGlobalRef(env, ni_ibcls);
+ CHECK_NULL(ni_ibcls);
+ ni_ibctrID = (*env)->GetMethodID(env, ni_ibcls, "<init>", "()V");
+ CHECK_NULL(ni_ibctrID);
+ ni_ibaddressID = (*env)->GetFieldID(env, ni_ibcls, "address",
+ "Ljava/net/InetAddress;");
+ CHECK_NULL(ni_ibaddressID);
+ ni_ib4broadcastID = (*env)->GetFieldID(env, ni_ibcls, "broadcast",
+ "Ljava/net/Inet4Address;");
+ CHECK_NULL(ni_ib4broadcastID);
+ ni_ib4maskID = (*env)->GetFieldID(env, ni_ibcls, "maskLength", "S");
+ CHECK_NULL(ni_ib4maskID);
+ ni_defaultIndexID = (*env)->GetStaticFieldID(env, ni_class, "defaultIndex",
+ "I");
+ CHECK_NULL(ni_defaultIndexID);
+ initInetAddressIDs(env);
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: getByName0
+ * Signature: (Ljava/lang/String;)Ljava/net/NetworkInterface;
+ */
+JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0
+ (JNIEnv *env, jclass cls, jstring name)
+{
+ netif *ifs, *curr;
+ jboolean isCopy;
+ const char* name_utf;
+ char *colonP;
+ char searchName[IFNAMESIZE];
+ jobject obj = NULL;
+
+ if (name != NULL) {
+ name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
+ } else {
+ JNU_ThrowNullPointerException(env, "network interface name is NULL");
+ return NULL;
+ }
+
+ if (name_utf == NULL) {
+ if (!(*env)->ExceptionCheck(env))
+ JNU_ThrowOutOfMemoryError(env, NULL);
+ return NULL;
+ }
+
+ ifs = enumInterfaces(env);
+ if (ifs == NULL) {
+ return NULL;
+ }
+
+ // search the list of interfaces based on name,
+ // if it is virtual sub interface search with parent first.
+ strncpy(searchName, name_utf, IFNAMESIZE);
+ searchName[IFNAMESIZE - 1] = '\0';
+ colonP = strchr(searchName, ':');
+ if (colonP != NULL) {
+ *colonP = '\0';
+ }
+ curr = ifs;
+ while (curr != NULL) {
+ if (strcmp(searchName, curr->name) == 0) {
+ break;
+ }
+ curr = curr->next;
+ }
+
+ // search the child list
+ if (colonP != NULL && curr != NULL) {
+ curr = curr->childs;
+ while (curr != NULL) {
+ if (strcmp(name_utf, curr->name) == 0) {
+ break;
+ }
+ curr = curr->next;
+ }
+ }
+
+ // if found create a NetworkInterface
+ if (curr != NULL) {
+ obj = createNetworkInterface(env, curr);
+ }
+
+ // release the UTF string and interface list
+ (*env)->ReleaseStringUTFChars(env, name, name_utf);
+ freeif(ifs);
+
+ return obj;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: getByIndex0
+ * Signature: (Ljava/lang/String;)Ljava/net/NetworkInterface;
+ */
+JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByIndex0
+ (JNIEnv *env, jclass cls, jint index)
+{
+ netif *ifs, *curr;
+ jobject obj = NULL;
+
+ if (index <= 0) {
+ return NULL;
+ }
+
+ ifs = enumInterfaces(env);
+ if (ifs == NULL) {
+ return NULL;
+ }
+
+ // search the list of interfaces based on index
+ curr = ifs;
+ while (curr != NULL) {
+ if (index == curr->index) {
+ break;
+ }
+ curr = curr->next;
+ }
+
+ // if found create a NetworkInterface
+ if (curr != NULL) {
+ obj = createNetworkInterface(env, curr);
+ }
+
+ // release the interface list
+ freeif(ifs);
+
+ return obj;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: getByInetAddress0
+ * Signature: (Ljava/net/InetAddress;)Ljava/net/NetworkInterface;
+ */
+JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByInetAddress0
+ (JNIEnv *env, jclass cls, jobject iaObj)
+{
+ netif *ifs, *curr;
+ int family = (getInetAddress_family(env, iaObj) == java_net_InetAddress_IPv4) ?
+ AF_INET : AF_INET6;
+ jobject obj = NULL;
+ jboolean match = JNI_FALSE;
+
+ ifs = enumInterfaces(env);
+ if (ifs == NULL) {
+ return NULL;
+ }
+
+ curr = ifs;
+ while (curr != NULL) {
+ netaddr *addrP = curr->addr;
+
+ // iterate through each address on the interface
+ while (addrP != NULL) {
+
+ if (family == addrP->family) {
+ if (family == AF_INET) {
+ int address1 = htonl(
+ ((struct sockaddr_in *)addrP->addr)->sin_addr.s_addr);
+ int address2 = getInetAddress_addr(env, iaObj);
+
+ if (address1 == address2) {
+ match = JNI_TRUE;
+ break;
+ }
+ } else if (family == AF_INET6) {
+ jbyte *bytes = (jbyte *)&(
+ ((struct sockaddr_in6*)addrP->addr)->sin6_addr);
+ jbyte caddr[16];
+ int i;
+ unsigned int scopeid;
+ getInet6Address_ipaddress(env, iaObj, (char *)caddr);
+ scopeid = (unsigned int)getInet6Address_scopeid(env, iaObj);
+ if (scopeid != 0 && scopeid != ((struct sockaddr_in6*)addrP->addr)->sin6_scope_id)
+ break;
+ i = 0;
+ while (i < 16) {
+ if (caddr[i] != bytes[i]) {
+ break;
+ }
+ i++;
+ }
+ if (i >= 16) {
+ match = JNI_TRUE;
+ break;
+ }
+ }
+ }
+
+ if (match) {
+ break;
+ }
+ addrP = addrP->next;
+ }
+
+ if (match) {
+ break;
+ }
+ curr = curr->next;
+ }
+
+ // if found create a NetworkInterface
+ if (match) {
+ obj = createNetworkInterface(env, curr);
+ }
+
+ // release the interface list
+ freeif(ifs);
+
+ return obj;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: getAll
+ * Signature: ()[Ljava/net/NetworkInterface;
+ */
+JNIEXPORT jobjectArray JNICALL Java_java_net_NetworkInterface_getAll
+ (JNIEnv *env, jclass cls)
+{
+ netif *ifs, *curr;
+ jobjectArray netIFArr;
+ jint arr_index, ifCount;
+
+ ifs = enumInterfaces(env);
+ if (ifs == NULL) {
+ return NULL;
+ }
+
+ // count the interfaces
+ ifCount = 0;
+ curr = ifs;
+ while (curr != NULL) {
+ ifCount++;
+ curr = curr->next;
+ }
+
+ // allocate a NetworkInterface array
+ netIFArr = (*env)->NewObjectArray(env, ifCount, cls, NULL);
+ if (netIFArr == NULL) {
+ freeif(ifs);
+ return NULL;
+ }
+
+ // iterate through the interfaces, create a NetworkInterface instance
+ // for each array element and populate the object
+ curr = ifs;
+ arr_index = 0;
+ while (curr != NULL) {
+ jobject netifObj;
+
+ netifObj = createNetworkInterface(env, curr);
+ if (netifObj == NULL) {
+ freeif(ifs);
+ return NULL;
+ }
+
+ // put the NetworkInterface into the array
+ (*env)->SetObjectArrayElement(env, netIFArr, arr_index++, netifObj);
+
+ curr = curr->next;
+ }
+
+ // release the interface list
+ freeif(ifs);
+
+ return netIFArr;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: isUp0
+ * Signature: (Ljava/lang/String;I)Z
+ */
+JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isUp0
+ (JNIEnv *env, jclass cls, jstring name, jint index)
+{
+ int ret = getFlags0(env, name);
+ return ((ret & IFF_UP) && (ret & IFF_RUNNING)) ? JNI_TRUE : JNI_FALSE;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: isP2P0
+ * Signature: (Ljava/lang/String;I)Z
+ */
+JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isP2P0
+ (JNIEnv *env, jclass cls, jstring name, jint index)
+{
+ int ret = getFlags0(env, name);
+ return (ret & IFF_POINTOPOINT) ? JNI_TRUE : JNI_FALSE;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: isLoopback0
+ * Signature: (Ljava/lang/String;I)Z
+ */
+JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isLoopback0
+ (JNIEnv *env, jclass cls, jstring name, jint index)
+{
+ int ret = getFlags0(env, name);
+ return (ret & IFF_LOOPBACK) ? JNI_TRUE : JNI_FALSE;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: supportsMulticast0
+ * Signature: (Ljava/lang/String;I)Z
+ */
+JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_supportsMulticast0
+ (JNIEnv *env, jclass cls, jstring name, jint index)
+{
+ int ret = getFlags0(env, name);
+ return (ret & IFF_MULTICAST) ? JNI_TRUE : JNI_FALSE;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: getMacAddr0
+ * Signature: ([bLjava/lang/String;I)[b
+ */
+JNIEXPORT jbyteArray JNICALL Java_java_net_NetworkInterface_getMacAddr0
+ (JNIEnv *env, jclass cls, jbyteArray addrArray, jstring name, jint index)
+{
+ jint addr;
+ jbyte caddr[4];
+ struct in_addr iaddr;
+ jbyteArray ret = NULL;
+ unsigned char mac[16];
+ int len;
+ jboolean isCopy;
+ const char *name_utf;
+
+ if (name != NULL) {
+ name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
+ } else {
+ JNU_ThrowNullPointerException(env, "network interface name is NULL");
+ return NULL;
+ }
+
+ if (name_utf == NULL) {
+ if (!(*env)->ExceptionCheck(env))
+ JNU_ThrowOutOfMemoryError(env, NULL);
+ return NULL;
+ }
+
+ if (!IS_NULL(addrArray)) {
+ (*env)->GetByteArrayRegion(env, addrArray, 0, 4, caddr);
+ addr = ((caddr[0]<<24) & 0xff000000);
+ addr |= ((caddr[1] <<16) & 0xff0000);
+ addr |= ((caddr[2] <<8) & 0xff00);
+ addr |= (caddr[3] & 0xff);
+ iaddr.s_addr = htonl(addr);
+ len = getMacAddress(env, name_utf, &iaddr, mac);
+ } else {
+ len = getMacAddress(env, name_utf, NULL, mac);
+ }
+
+ if (len > 0) {
+ ret = (*env)->NewByteArray(env, len);
+ if (!IS_NULL(ret)) {
+ (*env)->SetByteArrayRegion(env, ret, 0, len, (jbyte *)(mac));
+ }
+ }
+
+ // release the UTF string and interface list
+ (*env)->ReleaseStringUTFChars(env, name, name_utf);
+
+ return ret;
+}
+
+/*
+ * Class: java_net_NetworkInterface
+ * Method: getMTU0
+ * Signature: ([bLjava/lang/String;I)I
+ */
+JNIEXPORT jint JNICALL Java_java_net_NetworkInterface_getMTU0
+ (JNIEnv *env, jclass cls, jstring name, jint index)
+{
+ jboolean isCopy;
+ int sock, ret = -1;
+ const char* name_utf = NULL;
+
+ if (name != NULL) {
+ name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
+ } else {
+ JNU_ThrowNullPointerException(env, "network interface name is NULL");
+ return ret;
+ }
+
+ if (name_utf == NULL) {
+ if (!(*env)->ExceptionCheck(env))
+ JNU_ThrowOutOfMemoryError(env, NULL);
+ return ret;
+ }
+
+ if ((sock = openSocketWithFallback(env, name_utf)) < 0) {
+ (*env)->ReleaseStringUTFChars(env, name, name_utf);
+ return JNI_FALSE;
+ }
+
+ ret = getMTU(env, sock, name_utf);
+
+ (*env)->ReleaseStringUTFChars(env, name, name_utf);
+
+ close(sock);
+ return ret;
+}
+
+/*** Private methods definitions ****/
+
+static int getFlags0(JNIEnv *env, jstring name) {
+ jboolean isCopy;
+ int ret, sock, flags = 0;
+ const char *name_utf;
+
+ if (name != NULL) {
+ name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
+ } else {
+ JNU_ThrowNullPointerException(env, "network interface name is NULL");
+ return -1;
+ }
+
+ if (name_utf == NULL) {
+ if (!(*env)->ExceptionCheck(env))
+ JNU_ThrowOutOfMemoryError(env, NULL);
+ return -1;
+ }
+ if ((sock = openSocketWithFallback(env, name_utf)) < 0) {
+ (*env)->ReleaseStringUTFChars(env, name, name_utf);
+ return -1;
+ }
+
+ ret = getFlags(sock, name_utf, &flags);
+
+ close(sock);
+ (*env)->ReleaseStringUTFChars(env, name, name_utf);
+
+ if (ret < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "getFlags() failed");
+ return -1;
+ }
+
+ return flags;
+}
+
+/*
+ * Creates a NetworkInterface object, populates the name, the index, and
+ * populates the InetAddress array based on the IP addresses for this
+ * interface.
+ */
+static jobject createNetworkInterface(JNIEnv *env, netif *ifs) {
+ jobject netifObj;
+ jobject name;
+ jobjectArray addrArr;
+ jobjectArray bindArr;
+ jobjectArray childArr;
+ netaddr *addrs;
+ jint addr_index, addr_count, bind_index;
+ jint child_count, child_index;
+ netaddr *addrP;
+ netif *childP;
+ jobject tmp;
+
+ // create a NetworkInterface object and populate it
+ netifObj = (*env)->NewObject(env, ni_class, ni_ctrID);
+ CHECK_NULL_RETURN(netifObj, NULL);
+ name = (*env)->NewStringUTF(env, ifs->name);
+ CHECK_NULL_RETURN(name, NULL);
+ (*env)->SetObjectField(env, netifObj, ni_nameID, name);
+ (*env)->SetObjectField(env, netifObj, ni_descID, name);
+ (*env)->SetIntField(env, netifObj, ni_indexID, ifs->index);
+ (*env)->SetBooleanField(env, netifObj, ni_virutalID,
+ ifs->virtual ? JNI_TRUE : JNI_FALSE);
+
+ // count the number of addresses on this interface
+ addr_count = 0;
+ addrP = ifs->addr;
+ while (addrP != NULL) {
+ addr_count++;
+ addrP = addrP->next;
+ }
+
+ // create the array of InetAddresses
+ addrArr = (*env)->NewObjectArray(env, addr_count, ia_class, NULL);
+ if (addrArr == NULL) {
+ return NULL;
+ }
+
+ bindArr = (*env)->NewObjectArray(env, addr_count, ni_ibcls, NULL);
+ if (bindArr == NULL) {
+ return NULL;
+ }
+ addrP = ifs->addr;
+ addr_index = 0;
+ bind_index = 0;
+ while (addrP != NULL) {
+ jobject iaObj = NULL;
+ jobject ibObj = NULL;
+
+ if (addrP->family == AF_INET) {
+ iaObj = (*env)->NewObject(env, ia4_class, ia4_ctrID);
+ if (iaObj) {
+ setInetAddress_addr(env, iaObj, htonl(
+ ((struct sockaddr_in*)addrP->addr)->sin_addr.s_addr));
+ } else {
+ return NULL;
+ }
+ ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID);
+ if (ibObj) {
+ (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj);
+ if (addrP->brdcast) {
+ jobject ia2Obj = NULL;
+ ia2Obj = (*env)->NewObject(env, ia4_class, ia4_ctrID);
+ if (ia2Obj) {
+ setInetAddress_addr(env, ia2Obj, htonl(
+ ((struct sockaddr_in*)addrP->brdcast)->sin_addr.s_addr));
+ (*env)->SetObjectField(env, ibObj, ni_ib4broadcastID, ia2Obj);
+ } else {
+ return NULL;
+ }
+ }
+ (*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask);
+ (*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj);
+ } else {
+ return NULL;
+ }
+ }
+ if (addrP->family == AF_INET6) {
+ int scope=0;
+ iaObj = (*env)->NewObject(env, ia6_class, ia6_ctrID);
+ if (iaObj) {
+ jboolean ret = setInet6Address_ipaddress(env, iaObj,
+ (char *)&(((struct sockaddr_in6*)addrP->addr)->sin6_addr));
+ if (ret == JNI_FALSE) {
+ return NULL;
+ }
+
+ scope = ((struct sockaddr_in6*)addrP->addr)->sin6_scope_id;
+
+ if (scope != 0) { /* zero is default value, no need to set */
+ setInet6Address_scopeid(env, iaObj, scope);
+ setInet6Address_scopeifname(env, iaObj, netifObj);
+ }
+ } else {
+ return NULL;
+ }
+ ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID);
+ if (ibObj) {
+ (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj);
+ (*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask);
+ (*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj);
+ } else {
+ return NULL;
+ }
+ }
+
+ (*env)->SetObjectArrayElement(env, addrArr, addr_index++, iaObj);
+ addrP = addrP->next;
+ }
+
+ // see if there is any virtual interface attached to this one.
+ child_count = 0;
+ childP = ifs->childs;
+ while (childP) {
+ child_count++;
+ childP = childP->next;
+ }
+
+ childArr = (*env)->NewObjectArray(env, child_count, ni_class, NULL);
+ if (childArr == NULL) {
+ return NULL;
+ }
+
+ // create the NetworkInterface instances for the sub-interfaces as well
+ child_index = 0;
+ childP = ifs->childs;
+ while(childP) {
+ tmp = createNetworkInterface(env, childP);
+ if (tmp == NULL) {
+ return NULL;
+ }
+ (*env)->SetObjectField(env, tmp, ni_parentID, netifObj);
+ (*env)->SetObjectArrayElement(env, childArr, child_index++, tmp);
+ childP = childP->next;
+ }
+ (*env)->SetObjectField(env, netifObj, ni_addrsID, addrArr);
+ (*env)->SetObjectField(env, netifObj, ni_bindsID, bindArr);
+ (*env)->SetObjectField(env, netifObj, ni_childsID, childArr);
+
+ // return the NetworkInterface
+ return netifObj;
+}
+
+/*
+ * Enumerates all interfaces
+ */
+static netif *enumInterfaces(JNIEnv *env) {
+ netif *ifs = NULL;
+ int sock;
+
+ sock = openSocket(env, AF_INET);
+ if (sock < 0) {
+ return NULL;
+ }
+
+ // enumerate IPv4 addresses
+ ifs = enumIPv4Interfaces(env, sock, NULL);
+ close(sock);
+
+ // return partial list if an exception occurs in the middle of process ???
+ if (ifs == NULL && (*env)->ExceptionOccurred(env)) {
+ return NULL;
+ }
+
+ // If IPv6 is available then enumerate IPv6 addresses.
+ // User can disable ipv6 explicitly by -Djava.net.preferIPv4Stack=true,
+ // so we have to call ipv6_available()
+ if (ipv6_available()) {
+ sock = openSocket(env, AF_INET6);
+ if (sock < 0) {
+ freeif(ifs);
+ return NULL;
+ }
+
+ ifs = enumIPv6Interfaces(env, sock, ifs);
+ close(sock);
+
+ if ((*env)->ExceptionOccurred(env)) {
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ return ifs;
+}
+
+/*
+ * Frees an interface list (including any attached addresses).
+ */
+static void freeif(netif *ifs) {
+ netif *currif = ifs;
+ netif *child = NULL;
+
+ while (currif != NULL) {
+ netaddr *addrP = currif->addr;
+ while (addrP != NULL) {
+ netaddr *next = addrP->next;
+ free(addrP);
+ addrP = next;
+ }
+
+ // don't forget to free the sub-interfaces
+ if (currif->childs != NULL) {
+ freeif(currif->childs);
+ }
+
+ ifs = currif->next;
+ free(currif);
+ currif = ifs;
+ }
+}
+
+static netif *addif(JNIEnv *env, int sock, const char *if_name, netif *ifs,
+ struct sockaddr *ifr_addrP,
+ struct sockaddr *ifr_broadaddrP,
+ int family, short prefix)
+{
+ netif *currif = ifs, *parent;
+ netaddr *addrP;
+ char name[IFNAMESIZE], vname[IFNAMESIZE];
+ char *name_colonP;
+ int isVirtual = 0;
+ int addr_size;
+
+ // If the interface name is a logical interface then we remove the unit
+ // number so that we have the physical interface (eg: hme0:1 -> hme0).
+ // NetworkInterface currently doesn't have any concept of physical vs.
+ // logical interfaces.
+ strncpy(name, if_name, IFNAMESIZE);
+ name[IFNAMESIZE - 1] = '\0';
+ *vname = 0;
+
+ // Create and populate the netaddr node. If allocation fails
+ // return an un-updated list.
+
+ // Allocate for addr and brdcast at once
+
+ addr_size = (family == AF_INET) ? sizeof(struct sockaddr_in)
+ : sizeof(struct sockaddr_in6);
+
+ CHECKED_MALLOC3(addrP, netaddr *, sizeof(netaddr) + 2 * addr_size);
+ addrP->addr = (struct sockaddr *)((char *)addrP + sizeof(netaddr));
+ memcpy(addrP->addr, ifr_addrP, addr_size);
+
+ addrP->family = family;
+ addrP->mask = prefix;
+ addrP->next = 0;
+
+ // for IPv4 add broadcast address
+ if (family == AF_INET && ifr_broadaddrP != NULL) {
+ addrP->brdcast = (struct sockaddr *)
+ ((char *)addrP + sizeof(netaddr) + addr_size);
+ memcpy(addrP->brdcast, ifr_broadaddrP, addr_size);
+ } else {
+ addrP->brdcast = NULL;
+ }
+
+ // Deal with virtual interface with colon notation e.g. eth0:1
+ name_colonP = strchr(name, ':');
+ if (name_colonP != NULL) {
+ int flags = 0;
+ // This is a virtual interface. If we are able to access the parent
+ // we need to create a new entry if it doesn't exist yet *and* update
+ // the 'parent' interface with the new records.
+ *name_colonP = 0;
+ if (getFlags(sock, name, &flags) < 0 || flags < 0) {
+ // failed to access parent interface do not create parent.
+ // We are a virtual interface with no parent.
+ isVirtual = 1;
+ *name_colonP = ':';
+ } else {
+ // Got access to parent, so create it if necessary.
+ // Save original name to vname and truncate name by ':'
+ memcpy(vname, name, sizeof(vname));
+ vname[name_colonP - name] = ':';
+ }
+ }
+
+ // Check if this is a "new" interface. Use the interface name for
+ // matching because index isn't supported on Solaris 2.6 & 7.
+ while (currif != NULL) {
+ if (strcmp(name, currif->name) == 0) {
+ break;
+ }
+ currif = currif->next;
+ }
+
+ // If "new" then create a netif structure and insert it into the list.
+ if (currif == NULL) {
+ CHECKED_MALLOC3(currif, netif *, sizeof(netif) + IFNAMESIZE);
+ currif->name = (char *)currif + sizeof(netif);
+ strncpy(currif->name, name, IFNAMESIZE);
+ currif->name[IFNAMESIZE - 1] = '\0';
+ currif->index = getIndex(sock, name);
+ currif->addr = NULL;
+ currif->childs = NULL;
+ currif->virtual = isVirtual;
+ currif->next = ifs;
+ ifs = currif;
+ }
+
+ // Finally insert the address on the interface
+ addrP->next = currif->addr;
+ currif->addr = addrP;
+
+ parent = currif;
+
+ // Deal with the virtual interface now.
+ if (vname[0]) {
+ netaddr *tmpaddr;
+
+ currif = parent->childs;
+
+ while (currif != NULL) {
+ if (strcmp(vname, currif->name) == 0) {
+ break;
+ }
+ currif = currif->next;
+ }
+
+ if (currif == NULL) {
+ CHECKED_MALLOC3(currif, netif *, sizeof(netif) + IFNAMESIZE);
+ currif->name = (char *)currif + sizeof(netif);
+ strncpy(currif->name, vname, IFNAMESIZE);
+ currif->name[IFNAMESIZE - 1] = '\0';
+ currif->index = getIndex(sock, vname);
+ currif->addr = NULL; // Need to duplicate the addr entry?
+ currif->virtual = 1;
+ currif->childs = NULL;
+ currif->next = parent->childs;
+ parent->childs = currif;
+ }
+
+ CHECKED_MALLOC3(tmpaddr, netaddr *, sizeof(netaddr) + 2 * addr_size);
+ memcpy(tmpaddr, addrP, sizeof(netaddr));
+ if (addrP->addr != NULL) {
+ tmpaddr->addr = (struct sockaddr *)
+ ((char*)tmpaddr + sizeof(netaddr));
+ memcpy(tmpaddr->addr, addrP->addr, addr_size);
+ }
+
+ if (addrP->brdcast != NULL) {
+ tmpaddr->brdcast = (struct sockaddr *)
+ ((char *)tmpaddr + sizeof(netaddr) + addr_size);
+ memcpy(tmpaddr->brdcast, addrP->brdcast, addr_size);
+ }
+
+ tmpaddr->next = currif->addr;
+ currif->addr = tmpaddr;
+ }
+
+ return ifs;
+}
+
+/*
+ * Determines the prefix value for an AF_INET subnet address.
+ */
+static short translateIPv4AddressToPrefix(struct sockaddr_in *addr) {
+ short prefix = 0;
+ unsigned int mask = ntohl(addr->sin_addr.s_addr);
+ while (mask) {
+ mask <<= 1;
+ prefix++;
+ }
+ return prefix;
+}
+
+/*
+ * Determines the prefix value for an AF_INET6 subnet address.
+ */
+static short translateIPv6AddressToPrefix(struct sockaddr_in6 *addr) {
+ short prefix = 0;
+ u_char *addrBytes = (u_char *)&(addr->sin6_addr);
+ unsigned int byte, bit;
+
+ for (byte = 0; byte < sizeof(struct in6_addr); byte++, prefix += 8) {
+ if (addrBytes[byte] != 0xff) {
+ break;
+ }
+ }
+ if (byte != sizeof(struct in6_addr)) {
+ for (bit = 7; bit != 0; bit--, prefix++) {
+ if (!(addrBytes[byte] & (1 << bit))) {
+ break;
+ }
+ }
+ for (; bit != 0; bit--) {
+ if (addrBytes[byte] & (1 << bit)) {
+ prefix = 0;
+ break;
+ }
+ }
+ if (prefix > 0) {
+ byte++;
+ for (; byte < sizeof(struct in6_addr); byte++) {
+ if (addrBytes[byte]) {
+ prefix = 0;
+ }
+ }
+ }
+ }
+
+ return prefix;
+}
+
+/*
+ * Opens a socket for further ioct calls. proto is one of AF_INET or AF_INET6.
+ */
+static int openSocket(JNIEnv *env, int proto) {
+ int sock;
+
+ if ((sock = socket(proto, SOCK_DGRAM, 0)) < 0) {
+ // If EPROTONOSUPPORT is returned it means we don't have
+ // support for this proto so don't throw an exception.
+ if (errno != EPROTONOSUPPORT) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "Socket creation failed");
+ }
+ return -1;
+ }
+
+ return sock;
+}
+
+/** Linux **/
+#if defined(__linux__)
+
+/*
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
+ */
+static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
+ int sock;
+
+ if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ if (errno == EPROTONOSUPPORT) {
+ if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
+ return -1;
+ }
+ } else { // errno is not NOSUPPORT
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
+ return -1;
+ }
+ }
+
+ // Linux starting from 2.6.? kernel allows ioctl call with either IPv4 or
+ // IPv6 socket regardless of type of address of an interface.
+ return sock;
+}
+
+/*
+ * Enumerates and returns all IPv4 interfaces on Linux.
+ */
+static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct ifconf ifc;
+ struct ifreq *ifreqP;
+ char *buf = NULL;
+ unsigned i;
+
+ // do a dummy SIOCGIFCONF to determine the buffer size
+ // SIOCGIFCOUNT doesn't work
+ ifc.ifc_buf = NULL;
+ if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFCONF) failed");
+ return ifs;
+ }
+
+ // call SIOCGIFCONF to enumerate the interfaces
+ CHECKED_MALLOC3(buf, char *, ifc.ifc_len);
+ ifc.ifc_buf = buf;
+ if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ ifreqP = ifc.ifc_req;
+ for (i = 0; i < ifc.ifc_len / sizeof(struct ifreq); i++, ifreqP++) {
+ struct sockaddr addr, broadaddr, *broadaddrP = NULL;
+ short prefix = 0;
+
+ // ignore non IPv4 addresses
+ if (ifreqP->ifr_addr.sa_family != AF_INET) {
+ continue;
+ }
+
+ // save socket address
+ memcpy(&addr, &(ifreqP->ifr_addr), sizeof(struct sockaddr));
+
+ // determine broadcast address, if applicable
+ if ((ioctl(sock, SIOCGIFFLAGS, ifreqP) == 0) &&
+ ifreqP->ifr_flags & IFF_BROADCAST) {
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
+
+ if (ioctl(sock, SIOCGIFBRDADDR, ifreqP) == 0) {
+ memcpy(&broadaddr, &(ifreqP->ifr_broadaddr),
+ sizeof(struct sockaddr));
+ broadaddrP = &broadaddr;
+ }
+ }
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
+
+ // determine netmask
+ if (ioctl(sock, SIOCGIFNETMASK, ifreqP) == 0) {
+ prefix = translateIPv4AddressToPrefix(
+ (struct sockaddr_in *)&(ifreqP->ifr_netmask));
+ }
+
+ // add interface to the list
+ ifs = addif(env, sock, ifreqP->ifr_name, ifs,
+ &addr, broadaddrP, AF_INET, prefix);
+
+ // in case of exception, free interface list and buffer and return NULL
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+/*
+ * Enumerates and returns all IPv6 interfaces on Linux.
+ */
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ FILE *f;
+ char devname[21], addr6p[8][5];
+ int prefix, scope, dad_status, if_idx;
+
+ if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {
+ while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n",
+ addr6p[0], addr6p[1], addr6p[2], addr6p[3],
+ addr6p[4], addr6p[5], addr6p[6], addr6p[7],
+ &if_idx, &prefix, &scope, &dad_status, devname) != EOF) {
+
+ char addr6[40];
+ struct sockaddr_in6 addr;
+
+ sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
+ addr6p[0], addr6p[1], addr6p[2], addr6p[3],
+ addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
+
+ memset(&addr, 0, sizeof(struct sockaddr_in6));
+ inet_pton(AF_INET6, addr6, (void*)addr.sin6_addr.s6_addr);
+
+ // set scope ID to interface index
+ addr.sin6_scope_id = if_idx;
+
+ // add interface to the list
+ ifs = addif(env, sock, devname, ifs, (struct sockaddr *)&addr,
+ NULL, AF_INET6, (short)prefix);
+
+ // if an exception occurred then return the list as is
+ if ((*env)->ExceptionOccurred(env)) {
+ break;
+ }
+ }
+ fclose(f);
+ }
+ return ifs;
+}
+
+/*
+ * Try to get the interface index.
+ */
+static int getIndex(int sock, const char *name) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, name, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFINDEX, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ return if2.ifr_ifindex;
+}
+
+/*
+ * Gets the Hardware address (usually MAC address) for the named interface.
+ * On return puts the data in buf, and returns the length, in byte, of the
+ * MAC address. Returns -1 if there is no hardware address on that interface.
+ */
+static int getMacAddress
+ (JNIEnv *env, const char *ifname, const struct in_addr *addr,
+ unsigned char *buf)
+{
+ struct ifreq ifr;
+ int i, sock;
+
+ if ((sock = openSocketWithFallback(env, ifname)) < 0) {
+ return -1;
+ }
+
+ memset((char *)&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
+ if (ioctl(sock, SIOCGIFHWADDR, &ifr) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFHWADDR) failed");
+ close(sock);
+ return -1;
+ }
+
+ close(sock);
+ memcpy(buf, &ifr.ifr_hwaddr.sa_data, IFHWADDRLEN);
+
+ // all bytes to 0 means no hardware address
+ for (i = 0; i < IFHWADDRLEN; i++) {
+ if (buf[i] != 0)
+ return IFHWADDRLEN;
+ }
+
+ return -1;
+}
+
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFMTU, (char *)&if2) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFMTU) failed");
+ return -1;
+ }
+
+ return if2.ifr_mtu;
+}
+
+static int getFlags(int sock, const char *ifname, int *flags) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ if (sizeof(if2.ifr_flags) == sizeof(short)) {
+ *flags = (if2.ifr_flags & 0xffff);
+ } else {
+ *flags = if2.ifr_flags;
+ }
+ return 0;
+}
+
+#endif /* __linux__ */
+
+/** AIX **/
+#if defined(_AIX)
+
+/*
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
+ */
+static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
+ int sock;
+
+ if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ if (errno == EPROTONOSUPPORT) {
+ if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
+ return -1;
+ }
+ } else { // errno is not NOSUPPORT
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
+ return -1;
+ }
+ }
+
+ return sock;
+}
+
+/*
+ * Enumerates and returns all IPv4 interfaces on AIX.
+ */
+static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct ifconf ifc;
+ struct ifreq *ifreqP;
+ char *buf = NULL;
+ unsigned i;
+
+ // call SIOCGSIZIFCONF to get the size of SIOCGIFCONF buffer
+ if (ioctl(sock, SIOCGSIZIFCONF, &(ifc.ifc_len)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGSIZIFCONF) failed");
+ return ifs;
+ }
+
+ // call CSIOCGIFCONF instead of SIOCGIFCONF where interface
+ // records will always have sizeof(struct ifreq) length.
+ // Be aware that only IPv4 data is complete this way.
+ CHECKED_MALLOC3(buf, char *, ifc.ifc_len);
+ ifc.ifc_buf = buf;
+ if (ioctl(sock, CSIOCGIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(CSIOCGIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ ifreqP = ifc.ifc_req;
+ for (i = 0; i < ifc.ifc_len / sizeof(struct ifreq); i++, ifreqP++) {
+ struct sockaddr addr, broadaddr, *broadaddrP = NULL;
+ short prefix = 0;
+
+ // ignore non IPv4 addresses
+ if (ifreqP->ifr_addr.sa_family != AF_INET) {
+ continue;
+ }
+
+ // save socket address
+ memcpy(&addr, &(ifreqP->ifr_addr), sizeof(struct sockaddr));
+
+ // determine broadcast address, if applicable
+ if ((ioctl(sock, SIOCGIFFLAGS, ifreqP) == 0) &&
+ ifreqP->ifr_flags & IFF_BROADCAST) {
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
+
+ if (ioctl(sock, SIOCGIFBRDADDR, ifreqP) == 0) {
+ memcpy(&broadaddr, &(ifreqP->ifr_broadaddr),
+ sizeof(struct sockaddr));
+ broadaddrP = &broadaddr;
+ }
+ }
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
+
+ // determine netmask
+ if (ioctl(sock, SIOCGIFNETMASK, ifreqP) == 0) {
+ prefix = translateIPv4AddressToPrefix(
+ (struct sockaddr_in *)&(ifreqP->ifr_addr));
+ }
+
+ // add interface to the list
+ ifs = addif(env, sock, ifreqP->ifr_name, ifs,
+ &addr, broadaddrP, AF_INET, prefix);
+
+ // in case of exception, free interface list and buffer and return NULL
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+/*
+ * Enumerates and returns all IPv6 interfaces on AIX.
+ */
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct ifconf ifc;
+ struct ifreq *ifreqP;
+ char *buf, *cp, *cplimit;
+
+ // call SIOCGSIZIFCONF to get size for SIOCGIFCONF buffer
+ if (ioctl(sock, SIOCGSIZIFCONF, &(ifc.ifc_len)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGSIZIFCONF) failed");
+ return ifs;
+ }
+
+ // call SIOCGIFCONF to enumerate the interfaces
+ CHECKED_MALLOC3(buf, char *, ifc.ifc_len);
+ ifc.ifc_buf = buf;
+ if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ ifreqP = ifc.ifc_req;
+ cp = (char *)ifc.ifc_req;
+ cplimit = cp + ifc.ifc_len;
+
+ for (; cp < cplimit;
+ cp += (sizeof(ifreqP->ifr_name) +
+ MAX((ifreqP->ifr_addr).sa_len, sizeof(ifreqP->ifr_addr))))
+ {
+ ifreqP = (struct ifreq *)cp;
+ short prefix = 0;
+
+ // ignore non IPv6 addresses
+ if (ifreqP->ifr_addr.sa_family != AF_INET6) {
+ continue;
+ }
+
+ // determine netmask
+ struct in6_ifreq if6;
+ memset((char *)&if6, 0, sizeof(if6));
+ strncpy(if6.ifr_name, ifreqP->ifr_name, sizeof(if6.ifr_name) - 1);
+ memcpy(&(if6.ifr_Addr), &(ifreqP->ifr_addr),
+ sizeof(struct sockaddr_in6));
+ if (ioctl(sock, SIOCGIFNETMASK6, (char *)&if6) >= 0) {
+ prefix = translateIPv6AddressToPrefix(&(if6.ifr_Addr));
+ }
+
+ // set scope ID to interface index
+ ((struct sockaddr_in6 *)&(ifreqP->ifr_addr))->sin6_scope_id =
+ getIndex(sock, ifreqP->ifr_name);
+
+ // add interface to the list
+ ifs = addif(env, sock, ifreqP->ifr_name, ifs,
+ (struct sockaddr *)&(ifreqP->ifr_addr),
+ NULL, AF_INET6, prefix);
+
+ // if an exception occurred then free the list
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+/*
+ * Try to get the interface index.
+ */
+static int getIndex(int sock, const char *name) {
+ int index = if_nametoindex(name);
+ return (index == 0) ? -1 : index;
+}
+
+/*
+ * Gets the Hardware address (usually MAC address) for the named interface.
+ * On return puts the data in buf, and returns the length, in byte, of the
+ * MAC address. Returns -1 if there is no hardware address on that interface.
+ */
+static int getMacAddress
+ (JNIEnv *env, const char *ifname, const struct in_addr *addr,
+ unsigned char *buf)
+{
+ int size;
+ struct kinfo_ndd *nddp;
+ void *end;
+
+ size = getkerninfo(KINFO_NDD, 0, 0, 0);
+ if (size == 0) {
+ return -1;
+ }
+
+ if (size < 0) {
+ perror("getkerninfo 1");
+ return -1;
+ }
+
+ nddp = (struct kinfo_ndd *)malloc(size);
+
+ if (!nddp) {
+ JNU_ThrowOutOfMemoryError(env,
+ "Network interface getMacAddress native buffer allocation failed");
+ return -1;
+ }
+
+ if (getkerninfo(KINFO_NDD, nddp, &size, 0) < 0) {
+ perror("getkerninfo 2");
+ return -1;
+ }
+
+ end = (void *)nddp + size;
+ while ((void *)nddp < end) {
+ if (!strcmp(nddp->ndd_alias, ifname) ||
+ !strcmp(nddp->ndd_name, ifname)) {
+ bcopy(nddp->ndd_addr, buf, 6);
+ return 6;
+ } else {
+ nddp++;
+ }
+ }
+
+ return -1;
+}
+
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFMTU, (char *)&if2) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFMTU) failed");
+ return -1;
+ }
+
+ return if2.ifr_mtu;
+}
+
+static int getFlags(int sock, const char *ifname, int *flags) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ if (sizeof(if2.ifr_flags) == sizeof(short)) {
+ *flags = (if2.ifr_flags & 0xffff);
+ } else {
+ *flags = if2.ifr_flags;
+ }
+ return 0;
+}
+
+#endif /* _AIX */
+
+/** Solaris **/
+#if defined(__solaris__)
+
+/*
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
+ */
+static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
+ int sock, alreadyV6 = 0;
+ struct lifreq if2;
+
+ if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ if (errno == EPROTONOSUPPORT) {
+ if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
+ return -1;
+ }
+ alreadyV6 = 1;
+ } else { // errno is not NOSUPPORT
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
+ return -1;
+ }
+ }
+
+ // Solaris requires that we have an IPv6 socket to query an interface
+ // without an IPv4 address - check it here. POSIX 1 require the kernel to
+ // return ENOTTY if the call is inappropriate for a device e.g. the NETMASK
+ // for a device having IPv6 only address but not all devices follow the
+ // standard so fall back on any error. It's not an ecologically friendly
+ // gesture but more reliable.
+ if (!alreadyV6) {
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
+ if (ioctl(sock, SIOCGLIFNETMASK, (char *)&if2) < 0) {
+ close(sock);
+ if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
+ return -1;
+ }
+ }
+ }
+
+ return sock;
+}
+
+/*
+ * Enumerates and returns all IPv4 interfaces on Solaris.
+ */
+static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct lifconf ifc;
+ struct lifreq *ifreqP;
+ struct lifnum numifs;
+ char *buf = NULL;
+ unsigned i;
+
+ // call SIOCGLIFNUM to get the interface count
+ numifs.lifn_family = AF_INET;
+ numifs.lifn_flags = 0;
+ if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFNUM) failed");
+ return ifs;
+ }
+
+ // call SIOCGLIFCONF to enumerate the interfaces
+ ifc.lifc_len = numifs.lifn_count * sizeof(struct lifreq);
+ CHECKED_MALLOC3(buf, char *, ifc.lifc_len);
+ ifc.lifc_buf = buf;
+ ifc.lifc_family = AF_INET;
+ ifc.lifc_flags = 0;
+ if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ ifreqP = ifc.lifc_req;
+ for (i = 0; i < numifs.lifn_count; i++, ifreqP++) {
+ struct sockaddr addr, *broadaddrP = NULL;
+
+ // ignore non IPv4 addresses
+ if (ifreqP->lifr_addr.ss_family != AF_INET) {
+ continue;
+ }
+
+ // save socket address
+ memcpy(&addr, &(ifreqP->lifr_addr), sizeof(struct sockaddr));
+
+ // determine broadcast address, if applicable
+ if ((ioctl(sock, SIOCGLIFFLAGS, ifreqP) == 0) &&
+ ifreqP->lifr_flags & IFF_BROADCAST) {
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->lifr_addr), &addr, sizeof(struct sockaddr));
+
+ // query broadcast address and set pointer to it
+ if (ioctl(sock, SIOCGLIFBRDADDR, ifreqP) == 0) {
+ broadaddrP = (struct sockaddr *)&(ifreqP->lifr_broadaddr);
+ }
+ }
+
+ // add to the list
+ ifs = addif(env, sock, ifreqP->lifr_name, ifs,
+ &addr, broadaddrP, AF_INET, (short)ifreqP->lifr_addrlen);
+
+ // if an exception occurred we return immediately
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ return ifs;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+/*
+ * Enumerates and returns all IPv6 interfaces on Solaris.
+ */
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct lifconf ifc;
+ struct lifreq *ifreqP;
+ struct lifnum numifs;
+ char *buf = NULL;
+ unsigned i;
+
+ // call SIOCGLIFNUM to get the interface count
+ numifs.lifn_family = AF_INET6;
+ numifs.lifn_flags = 0;
+ if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFNUM) failed");
+ return ifs;
+ }
+
+ // call SIOCGLIFCONF to enumerate the interfaces
+ ifc.lifc_len = numifs.lifn_count * sizeof(struct lifreq);
+ CHECKED_MALLOC3(buf, char *, ifc.lifc_len);
+ ifc.lifc_buf = buf;
+ ifc.lifc_family = AF_INET6;
+ ifc.lifc_flags = 0;
+ if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ ifreqP = ifc.lifc_req;
+ for (i = 0; i < numifs.lifn_count; i++, ifreqP++) {
+
+ // ignore non IPv6 addresses
+ if (ifreqP->lifr_addr.ss_family != AF_INET6) {
+ continue;
+ }
+
+ // set scope ID to interface index
+ ((struct sockaddr_in6 *)&(ifreqP->lifr_addr))->sin6_scope_id =
+ getIndex(sock, ifreqP->lifr_name);
+
+ // add to the list
+ ifs = addif(env, sock, ifreqP->lifr_name, ifs,
+ (struct sockaddr *)&(ifreqP->lifr_addr),
+ NULL, AF_INET6, (short)ifreqP->lifr_addrlen);
+
+ // if an exception occurred we return immediately
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ return ifs;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+/*
+ * Try to get the interface index.
+ * (Not supported on Solaris 2.6 or 7)
+ */
+static int getIndex(int sock, const char *name) {
+ struct lifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.lifr_name, name, sizeof(if2.lifr_name) - 1);
+
+ if (ioctl(sock, SIOCGLIFINDEX, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ return if2.lifr_index;
+}
+
+/*
+ * Solaris specific DLPI code to get hardware address from a device.
+ * Unfortunately, at least up to Solaris X, you have to have special
+ * privileges (i.e. be root).
+ */
+static int getMacFromDevice
+ (JNIEnv *env, const char *ifname, unsigned char *retbuf)
+{
+ char style1dev[MAXPATHLEN];
+ int fd;
+ dl_phys_addr_req_t dlpareq;
+ dl_phys_addr_ack_t *dlpaack;
+ struct strbuf msg;
+ char buf[128];
+ int flags = 0;
+
+ // Device is in /dev. e.g.: /dev/bge0
+ strcpy(style1dev, DEV_PREFIX);
+ strcat(style1dev, ifname);
+ if ((fd = open(style1dev, O_RDWR)) < 0) {
+ // Can't open it. We probably are missing the privilege.
+ // We'll have to try something else
+ return 0;
+ }
+
+ dlpareq.dl_primitive = DL_PHYS_ADDR_REQ;
+ dlpareq.dl_addr_type = DL_CURR_PHYS_ADDR;
+
+ msg.buf = (char *)&dlpareq;
+ msg.len = DL_PHYS_ADDR_REQ_SIZE;
+
+ if (putmsg(fd, &msg, NULL, 0) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "putmsg() failed");
+ return -1;
+ }
+
+ dlpaack = (dl_phys_addr_ack_t *)buf;
+
+ msg.buf = (char *)buf;
+ msg.len = 0;
+ msg.maxlen = sizeof (buf);
+ if (getmsg(fd, &msg, NULL, &flags) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "getmsg() failed");
+ return -1;
+ }
+
+ if (msg.len < DL_PHYS_ADDR_ACK_SIZE || dlpaack->dl_primitive != DL_PHYS_ADDR_ACK) {
+ JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
+ "Couldn't obtain phys addr\n");
+ return -1;
+ }
+
+ memcpy(retbuf, &buf[dlpaack->dl_addr_offset], dlpaack->dl_addr_length);
+ return dlpaack->dl_addr_length;
+}
+
+/*
+ * Gets the Hardware address (usually MAC address) for the named interface.
+ * On return puts the data in buf, and returns the length, in byte, of the
+ * MAC address. Returns -1 if there is no hardware address on that interface.
+ */
+static int getMacAddress
+ (JNIEnv *env, const char *ifname, const struct in_addr *addr,
+ unsigned char *buf)
+{
+ struct lifreq if2;
+ int len, i, sock;
+
+ if ((sock = openSocketWithFallback(env, ifname)) < 0) {
+ return -1;
+ }
+
+ // First, try the new (S11) SIOCGLIFHWADDR ioctl(). If that fails
+ // try the old way.
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
+
+ if (ioctl(sock, SIOCGLIFHWADDR, &if2) != -1) {
+ struct sockaddr_dl *sp;
+ sp = (struct sockaddr_dl *)&if2.lifr_addr;
+ memcpy(buf, &sp->sdl_data[0], sp->sdl_alen);
+ close(sock);
+ return sp->sdl_alen;
+ }
+
+ // On Solaris we have to use DLPI, but it will only work if we have
+ // privileged access (i.e. root). If that fails, we try a lookup
+ // in the ARP table, which requires an IPv4 address.
+ if (((len = getMacFromDevice(env, ifname, buf)) == 0) && (addr != NULL)) {
+ struct arpreq arpreq;
+ struct sockaddr_in *sin;
+ struct sockaddr_in ipAddr;
+
+ len = 6; //???
+
+ sin = (struct sockaddr_in *)&arpreq.arp_pa;
+ memset((char *)&arpreq, 0, sizeof(struct arpreq));
+ ipAddr.sin_port = 0;
+ ipAddr.sin_family = AF_INET;
+ memcpy(&ipAddr.sin_addr, addr, sizeof(struct in_addr));
+ memcpy(&arpreq.arp_pa, &ipAddr, sizeof(struct sockaddr_in));
+ arpreq.arp_flags= ATF_PUBL;
+
+ if (ioctl(sock, SIOCGARP, &arpreq) < 0) {
+ close(sock);
+ return -1;
+ }
+
+ memcpy(buf, &arpreq.arp_ha.sa_data[0], len);
+ }
+ close(sock);
+
+ // all bytes to 0 means no hardware address
+ for (i = 0; i < len; i++) {
+ if (buf[i] != 0)
+ return len;
+ }
+
+ return -1;
+}
+
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+ struct lifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
+
+ if (ioctl(sock, SIOCGLIFMTU, (char *)&if2) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFMTU) failed");
+ return -1;
+ }
+
+ return if2.lifr_mtu;
+}
+
+static int getFlags(int sock, const char *ifname, int *flags) {
+ struct lifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
+
+ if (ioctl(sock, SIOCGLIFFLAGS, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ *flags = if2.lifr_flags;
+ return 0;
+}
+
+#endif /* __solaris__ */
+
+/** BSD **/
+#if defined(_ALLBSD_SOURCE)
+
+/*
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
+ */
+static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
+ int sock;
+
+ if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ if (errno == EPROTONOSUPPORT) {
+ if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
+ return -1;
+ }
+ } else { // errno is not NOSUPPORT
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
+ return -1;
+ }
+ }
+
+ return sock;
+}
+
+/*
+ * Enumerates and returns all IPv4 interfaces on BSD.
+ */
+static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct ifaddrs *ifa, *origifa;
+
+ if (getifaddrs(&origifa) != 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "getifaddrs() failed");
+ return ifs;
+ }
+
+ for (ifa = origifa; ifa != NULL; ifa = ifa->ifa_next) {
+ struct sockaddr *broadaddrP = NULL;
+
+ // ignore non IPv4 addresses
+ if (ifa->ifa_addr == NULL || ifa->ifa_addr->sa_family != AF_INET)
+ continue;
+
+ // set ifa_broadaddr, if there is one
+ if ((ifa->ifa_flags & IFF_POINTOPOINT) == 0 &&
+ ifa->ifa_flags & IFF_BROADCAST) {
+ broadaddrP = ifa->ifa_dstaddr;
+ }
+
+ // add interface to the list
+ ifs = addif(env, sock, ifa->ifa_name, ifs, ifa->ifa_addr,
+ broadaddrP, AF_INET,
+ translateIPv4AddressToPrefix((struct sockaddr_in *)
+ ifa->ifa_netmask));
+
+ // if an exception occurred then free the list
+ if ((*env)->ExceptionOccurred(env)) {
+ freeifaddrs(origifa);
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ // free ifaddrs buffer
+ freeifaddrs(origifa);
+ return ifs;
+}
+
+/*
+ * Enumerates and returns all IPv6 interfaces on BSD.
+ */
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct ifaddrs *ifa, *origifa;
+
+ if (getifaddrs(&origifa) != 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "getifaddrs() failed");
+ return ifs;
+ }
+
+ for (ifa = origifa; ifa != NULL; ifa = ifa->ifa_next) {
+ // ignore non IPv6 addresses
+ if (ifa->ifa_addr == NULL || ifa->ifa_addr->sa_family != AF_INET6)
+ continue;
+
+ // set scope ID to interface index
+ ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id =
+ getIndex(sock, ifa->ifa_name);
+
+ // add interface to the list
+ ifs = addif(env, sock, ifa->ifa_name, ifs, ifa->ifa_addr, NULL,
+ AF_INET6,
+ translateIPv6AddressToPrefix((struct sockaddr_in6 *)
+ ifa->ifa_netmask));
+
+ // if an exception occurred then free the list
+ if ((*env)->ExceptionOccurred(env)) {
+ freeifaddrs(origifa);
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ // free ifaddrs buffer
+ freeifaddrs(origifa);
+ return ifs;
+}
+
+/*
+ * Try to get the interface index.
+ */
+static int getIndex(int sock, const char *name) {
+#if !defined(__FreeBSD__)
+ int index = if_nametoindex(name);
+ return (index == 0) ? -1 : index;
+#else
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, name, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFINDEX, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ return if2.ifr_index;
+#endif
+}
+
+/*
+ * Gets the Hardware address (usually MAC address) for the named interface.
+ * On return puts the data in buf, and returns the length, in byte, of the
+ * MAC address. Returns -1 if there is no hardware address on that interface.
+ */
+static int getMacAddress
+ (JNIEnv *env, const char *ifname, const struct in_addr *addr,
+ unsigned char *buf)
+{
+ struct ifaddrs *ifa0, *ifa;
+ struct sockaddr *saddr;
+ int i;
+
+ // grab the interface list
+ if (!getifaddrs(&ifa0)) {
+ // cycle through the interfaces
+ for (i = 0, ifa = ifa0; ifa != NULL; ifa = ifa->ifa_next, i++) {
+ saddr = ifa->ifa_addr;
+ // link layer contains the MAC address
+ if (saddr->sa_family == AF_LINK && !strcmp(ifname, ifa->ifa_name)) {
+ struct sockaddr_dl *sadl = (struct sockaddr_dl *) saddr;
+ // check the address has the correct length
+ if (sadl->sdl_alen == ETHER_ADDR_LEN) {
+ memcpy(buf, (sadl->sdl_data + sadl->sdl_nlen), ETHER_ADDR_LEN);
+ freeifaddrs(ifa0);
+ return ETHER_ADDR_LEN;
+ }
+ }
+ }
+ freeifaddrs(ifa0);
+ }
+
+ return -1;
+}
+
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFMTU, (char *)&if2) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFMTU) failed");
+ return -1;
+ }
+
+ return if2.ifr_mtu;
+}
+
+static int getFlags(int sock, const char *ifname, int *flags) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ if (sizeof(if2.ifr_flags) == sizeof(short)) {
+ *flags = (if2.ifr_flags & 0xffff);
+ } else {
+ *flags = if2.ifr_flags;
+ }
+ return 0;
+}
+#endif /* _ALLBSD_SOURCE */