| /* |
| * 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 */ |