| /* |
| * Copyright (c) 2000, 2009, 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 <errno.h> |
| #include <strings.h> |
| #include <netinet/in.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <arpa/inet.h> |
| #include <net/if.h> |
| #include <net/if_arp.h> |
| #ifdef __solaris__ |
| #include <sys/dlpi.h> |
| #include <fcntl.h> |
| #include <stropts.h> |
| #endif |
| #ifdef __linux__ |
| #include <sys/ioctl.h> |
| #include <bits/ioctls.h> |
| #include <linux/sockios.h> |
| #include <sys/utsname.h> |
| #include <stdio.h> |
| #else |
| #include <sys/sockio.h> |
| #endif |
| |
| #ifdef __linux__ |
| #define ifr_index ifr_ifindex |
| #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" |
| #endif |
| |
| #include "jvm.h" |
| #include "jni_util.h" |
| #include "net_util.h" |
| |
| 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; |
| jmethodID ni_ctrID; |
| |
| static jclass ni_iacls; |
| static jclass ni_ia4cls; |
| static jclass ni_ia6cls; |
| static jclass ni_ibcls; |
| static jmethodID ni_ia4ctrID; |
| static jmethodID ni_ia6ctrID; |
| static jmethodID ni_ibctrID; |
| static jfieldID ni_iaaddressID; |
| static jfieldID ni_iafamilyID; |
| static jfieldID ni_ia6ipaddressID; |
| static jfieldID ni_ibaddressID; |
| static jfieldID ni_ib4broadcastID; |
| static jfieldID ni_ib4maskID; |
| |
| static jobject createNetworkInterface(JNIEnv *env, netif *ifs); |
| |
| static netif *enumInterfaces(JNIEnv *env); |
| static netif *enumIPv4Interfaces(JNIEnv *env, netif *ifs); |
| #ifdef AF_INET6 |
| static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs); |
| #endif |
| |
| static netif *addif(JNIEnv *env, netif *ifs, char *if_name, int index, |
| int family, struct sockaddr *new_addrP, int new_addrlen, |
| short prefix); |
| static void freeif(netif *ifs); |
| static struct sockaddr *getBroadcast(JNIEnv *env, const char *ifname); |
| static short getSubnet(JNIEnv *env, const char *ifname); |
| |
| /* |
| * 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"); |
| ni_class = (*env)->NewGlobalRef(env, ni_class); |
| ni_nameID = (*env)->GetFieldID(env, ni_class,"name", "Ljava/lang/String;"); |
| ni_indexID = (*env)->GetFieldID(env, ni_class, "index", "I"); |
| ni_addrsID = (*env)->GetFieldID(env, ni_class, "addrs", "[Ljava/net/InetAddress;"); |
| ni_bindsID = (*env)->GetFieldID(env, ni_class, "bindings", "[Ljava/net/InterfaceAddress;"); |
| ni_descID = (*env)->GetFieldID(env, ni_class, "displayName", "Ljava/lang/String;"); |
| ni_virutalID = (*env)->GetFieldID(env, ni_class, "virtual", "Z"); |
| ni_childsID = (*env)->GetFieldID(env, ni_class, "childs", "[Ljava/net/NetworkInterface;"); |
| ni_parentID = (*env)->GetFieldID(env, ni_class, "parent", "Ljava/net/NetworkInterface;"); |
| ni_ctrID = (*env)->GetMethodID(env, ni_class, "<init>", "()V"); |
| |
| ni_iacls = (*env)->FindClass(env, "java/net/InetAddress"); |
| ni_iacls = (*env)->NewGlobalRef(env, ni_iacls); |
| ni_ia4cls = (*env)->FindClass(env, "java/net/Inet4Address"); |
| ni_ia4cls = (*env)->NewGlobalRef(env, ni_ia4cls); |
| ni_ia6cls = (*env)->FindClass(env, "java/net/Inet6Address"); |
| ni_ia6cls = (*env)->NewGlobalRef(env, ni_ia6cls); |
| ni_ibcls = (*env)->FindClass(env, "java/net/InterfaceAddress"); |
| ni_ibcls = (*env)->NewGlobalRef(env, ni_ibcls); |
| ni_ia4ctrID = (*env)->GetMethodID(env, ni_ia4cls, "<init>", "()V"); |
| ni_ia6ctrID = (*env)->GetMethodID(env, ni_ia6cls, "<init>", "()V"); |
| ni_ibctrID = (*env)->GetMethodID(env, ni_ibcls, "<init>", "()V"); |
| ni_iaaddressID = (*env)->GetFieldID(env, ni_iacls, "address", "I"); |
| ni_iafamilyID = (*env)->GetFieldID(env, ni_iacls, "family", "I"); |
| ni_ia6ipaddressID = (*env)->GetFieldID(env, ni_ia6cls, "ipaddress", "[B"); |
| ni_ibaddressID = (*env)->GetFieldID(env, ni_ibcls, "address", "Ljava/net/InetAddress;"); |
| ni_ib4broadcastID = (*env)->GetFieldID(env, ni_ibcls, "broadcast", "Ljava/net/Inet4Address;"); |
| ni_ib4maskID = (*env)->GetFieldID(env, ni_ibcls, "maskLength", "S"); |
| } |
| |
| |
| /* |
| * 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 = (*env)->GetStringUTFChars(env, name, &isCopy); |
| jobject obj = NULL; |
| |
| ifs = enumInterfaces(env); |
| if (ifs == NULL) { |
| return NULL; |
| } |
| |
| /* |
| * Search the list of interface based on name |
| */ |
| curr = ifs; |
| 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 interface 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); |
| } |
| |
| 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; |
| #ifdef AF_INET6 |
| int family = (*env)->GetIntField(env, iaObj, ni_iafamilyID) == IPv4? |
| AF_INET : AF_INET6; |
| #else |
| int family = AF_INET; |
| #endif |
| 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 = (*env)->GetIntField(env, iaObj, ni_iaaddressID); |
| |
| if (address1 == address2) { |
| match = JNI_TRUE; |
| break; |
| } |
| } |
| |
| #ifdef AF_INET6 |
| if (family == AF_INET6) { |
| jbyte *bytes = (jbyte *)&(((struct sockaddr_in6*)addrP->addr)->sin6_addr); |
| jbyteArray ipaddress = (*env)->GetObjectField(env, iaObj, ni_ia6ipaddressID); |
| jbyte caddr[16]; |
| int i; |
| |
| (*env)->GetByteArrayRegion(env, ipaddress, 0, 16, caddr); |
| i = 0; |
| while (i < 16) { |
| if (caddr[i] != bytes[i]) { |
| break; |
| } |
| i++; |
| } |
| if (i >= 16) { |
| match = JNI_TRUE; |
| break; |
| } |
| } |
| #endif |
| |
| } |
| |
| if (match) { |
| break; |
| } |
| addrP = addrP->next; |
| } |
| |
| if (match) { |
| break; |
| } |
| curr = curr->next; |
| } |
| |
| /* if found create a NetworkInterface */ |
| if (match) {; |
| obj = createNetworkInterface(env, curr); |
| } |
| |
| 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 interface */ |
| 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; |
| } |
| |
| freeif(ifs); |
| return netIFArr; |
| } |
| |
| /* |
| * Create a NetworkInterface object, populate the name and index, and |
| * populate the InetAddress array based on the IP addresses for this |
| * interface. |
| */ |
| jobject createNetworkInterface(JNIEnv *env, netif *ifs) |
| { |
| jobject netifObj; |
| jobject name; |
| jobjectArray addrArr; |
| jobjectArray bindArr; |
| jobjectArray childArr; |
| 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); |
| name = (*env)->NewStringUTF(env, ifs->name); |
| if (netifObj == NULL || name == NULL) { |
| return 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 address 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, ni_iacls, 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, ni_ia4cls, ni_ia4ctrID); |
| if (iaObj) { |
| (*env)->SetIntField(env, iaObj, ni_iaaddressID, |
| htonl(((struct sockaddr_in*)addrP->addr)->sin_addr.s_addr)); |
| } |
| 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, ni_ia4cls, ni_ia4ctrID); |
| if (ia2Obj) { |
| (*env)->SetIntField(env, ia2Obj, ni_iaaddressID, |
| htonl(((struct sockaddr_in*)addrP->brdcast)->sin_addr.s_addr)); |
| (*env)->SetObjectField(env, ibObj, ni_ib4broadcastID, ia2Obj); |
| (*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask); |
| } |
| } |
| (*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj); |
| } |
| } |
| |
| #ifdef AF_INET6 |
| if (addrP->family == AF_INET6) { |
| int scope=0; |
| iaObj = (*env)->NewObject(env, ni_ia6cls, ni_ia6ctrID); |
| if (iaObj) { |
| jbyteArray ipaddress = (*env)->NewByteArray(env, 16); |
| if (ipaddress == NULL) { |
| return NULL; |
| } |
| (*env)->SetByteArrayRegion(env, ipaddress, 0, 16, |
| (jbyte *)&(((struct sockaddr_in6*)addrP->addr)->sin6_addr)); |
| #ifdef __linux__ |
| if (!kernelIsV22()) { |
| scope = ((struct sockaddr_in6*)addrP->addr)->sin6_scope_id; |
| } |
| #else |
| scope = ((struct sockaddr_in6*)addrP->addr)->sin6_scope_id; |
| #endif |
| if (scope != 0) { /* zero is default value, no need to set */ |
| (*env)->SetIntField(env, iaObj, ia6_scopeidID, scope); |
| (*env)->SetBooleanField(env, iaObj, ia6_scopeidsetID, JNI_TRUE); |
| (*env)->SetObjectField(env, iaObj, ia6_scopeifnameID, netifObj); |
| } |
| (*env)->SetObjectField(env, iaObj, ni_ia6ipaddressID, ipaddress); |
| } |
| 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); |
| } |
| } |
| #endif |
| |
| if (iaObj == NULL) { |
| 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; |
| |
| /* |
| * Enumerate IPv4 addresses |
| */ |
| ifs = enumIPv4Interfaces(env, NULL); |
| if (ifs == NULL) { |
| if ((*env)->ExceptionOccurred(env)) { |
| return NULL; |
| } |
| } |
| |
| /* |
| * If IPv6 is available then enumerate IPv6 addresses. |
| */ |
| #ifdef AF_INET6 |
| if (ipv6_available()) { |
| ifs = enumIPv6Interfaces(env, ifs); |
| |
| if ((*env)->ExceptionOccurred(env)) { |
| freeif(ifs); |
| return NULL; |
| } |
| } |
| #endif |
| |
| return ifs; |
| } |
| |
| |
| /* |
| * Enumerates and returns all IPv4 interfaces |
| */ |
| static netif *enumIPv4Interfaces(JNIEnv *env, netif *ifs) { |
| int sock; |
| struct ifconf ifc; |
| struct ifreq *ifreqP; |
| char *buf; |
| int numifs; |
| unsigned i; |
| unsigned bufsize; |
| |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| if (sock < 0) { |
| /* |
| * If EPROTONOSUPPORT is returned it means we don't have |
| * IPv4 support so don't throw an exception. |
| */ |
| if (errno != EPROTONOSUPPORT) { |
| NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| } |
| return ifs; |
| } |
| |
| #ifdef __linux__ |
| /* need to do a dummy SIOCGIFCONF to determine the buffer size. |
| * SIOCGIFCOUNT doesn't work |
| */ |
| ifc.ifc_buf = NULL; |
| if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) { |
| NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| "ioctl SIOCGIFCONF failed"); |
| close(sock); |
| return ifs; |
| } |
| bufsize = ifc.ifc_len; |
| #else |
| if (ioctl(sock, SIOCGIFNUM, (char *)&numifs) < 0) { |
| NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| "ioctl SIOCGIFNUM failed"); |
| close(sock); |
| return ifs; |
| } |
| bufsize = numifs * sizeof (struct ifreq); |
| #endif /* __linux__ */ |
| |
| buf = (char *)malloc(bufsize); |
| if (!buf) { |
| JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| (void) close(sock); |
| return ifs; |
| } |
| ifc.ifc_len = bufsize; |
| ifc.ifc_buf = buf; |
| if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) { |
| NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| "ioctl SIOCGIFCONF failed"); |
| (void) close(sock); |
| (void) free(buf); |
| return ifs; |
| } |
| |
| /* |
| * Iterate through each interface |
| */ |
| ifreqP = ifc.ifc_req; |
| for (i=0; i<ifc.ifc_len/sizeof (struct ifreq); i++, ifreqP++) { |
| int index; |
| struct ifreq if2; |
| |
| memset((char *)&if2, 0, sizeof(if2)); |
| strcpy(if2.ifr_name, ifreqP->ifr_name); |
| |
| /* |
| * Try to get the interface index |
| * (Not supported on Solaris 2.6 or 7) |
| */ |
| if (ioctl(sock, SIOCGIFINDEX, (char *)&if2) >= 0) { |
| index = if2.ifr_index; |
| } else { |
| index = -1; |
| } |
| |
| /* |
| * Add to the list |
| */ |
| ifs = addif(env, ifs, ifreqP->ifr_name, index, AF_INET, |
| (struct sockaddr *)&(ifreqP->ifr_addr), |
| sizeof(struct sockaddr_in), 0); |
| |
| /* |
| * If an exception occurred then free the list |
| */ |
| if ((*env)->ExceptionOccurred(env)) { |
| close(sock); |
| free(buf); |
| freeif(ifs); |
| return NULL; |
| } |
| } |
| |
| /* |
| * Free socket and buffer |
| */ |
| close(sock); |
| free(buf); |
| return ifs; |
| } |
| |
| |
| #if defined(__solaris__) && defined(AF_INET6) |
| /* |
| * Enumerates and returns all IPv6 interfaces on Solaris |
| */ |
| static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) { |
| int sock; |
| struct lifconf ifc; |
| struct lifreq *ifr; |
| int n; |
| char *buf; |
| struct lifnum numifs; |
| unsigned bufsize; |
| |
| sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0); |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| "Failed to create IPv6 socket"); |
| return ifs; |
| } |
| |
| /* |
| * Get the interface count |
| */ |
| numifs.lifn_family = AF_UNSPEC; |
| numifs.lifn_flags = 0; |
| if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) { |
| NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| "ioctl SIOCGLIFNUM failed"); |
| close(sock); |
| return ifs; |
| } |
| |
| /* |
| * Enumerate the interface configurations |
| */ |
| bufsize = numifs.lifn_count * sizeof (struct lifreq); |
| buf = (char *)malloc(bufsize); |
| if (!buf) { |
| JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| (void) close(sock); |
| return ifs; |
| } |
| ifc.lifc_family = AF_UNSPEC; |
| ifc.lifc_flags = 0; |
| ifc.lifc_len = bufsize; |
| ifc.lifc_buf = buf; |
| if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) { |
| NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| "ioctl SIOCGLIFCONF failed"); |
| close(sock); |
| free(buf); |
| return ifs; |
| } |
| |
| /* |
| * Iterate through each interface |
| */ |
| ifr = ifc.lifc_req; |
| for (n=0; n<numifs.lifn_count; n++, ifr++) { |
| int index = -1; |
| struct lifreq if2; |
| |
| /* |
| * Ignore non-IPv6 addresses |
| */ |
| if (ifr->lifr_addr.ss_family != AF_INET6) { |
| continue; |
| } |
| |
| /* |
| * Get the index |
| */ |
| memset((char *)&if2, 0, sizeof(if2)); |
| strcpy(if2.lifr_name, ifr->lifr_name); |
| if (ioctl(sock, SIOCGLIFINDEX, (char *)&if2) >= 0) { |
| struct sockaddr_in6 *s6= (struct sockaddr_in6 *)&(ifr->lifr_addr); |
| index = if2.lifr_index; |
| s6->sin6_scope_id = index; |
| } |
| |
| /* add to the list */ |
| ifs = addif(env, ifs, ifr->lifr_name, index, AF_INET6, |
| (struct sockaddr *)&(ifr->lifr_addr), |
| sizeof(struct sockaddr_in6), (short) ifr->lifr_addrlen); |
| |
| /* |
| * If an exception occurred we return |
| */ |
| if ((*env)->ExceptionOccurred(env)) { |
| close(sock); |
| free(buf); |
| return ifs; |
| } |
| |
| } |
| |
| close(sock); |
| free(buf); |
| return ifs; |
| |
| } |
| #endif |
| |
| |
| #if defined(__linux__) && defined(AF_INET6) |
| /* |
| * Enumerates and returns all IPv6 interfaces on Linux |
| */ |
| static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) { |
| FILE *f; |
| char addr6[40], devname[20]; |
| char addr6p[8][5]; |
| int plen, scope, dad_status, if_idx; |
| uint8_t ipv6addr[16]; |
| |
| if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) { |
| while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n", |
| addr6p[0], addr6p[1], addr6p[2], addr6p[3], |
| addr6p[4], addr6p[5], addr6p[6], addr6p[7], |
| &if_idx, &plen, &scope, &dad_status, devname) != EOF) { |
| 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]); |
| inet_pton(AF_INET6, addr6, ipv6addr); |
| |
| memset(&addr, 0, sizeof(struct sockaddr_in6)); |
| memcpy((void*)addr.sin6_addr.s6_addr, (const void*)ipv6addr, 16); |
| addr.sin6_scope_id = if_idx; |
| |
| ifs = addif(env, ifs, devname, if_idx, AF_INET6, |
| (struct sockaddr *)&addr, |
| sizeof(struct sockaddr_in6), plen); |
| |
| /* |
| * If an exception occurred then return the list as is. |
| */ |
| if ((*env)->ExceptionOccurred(env)) { |
| fclose(f); |
| return ifs; |
| } |
| } |
| fclose(f); |
| } |
| return ifs; |
| } |
| #endif |
| |
| |
| /* |
| * Free an interface list (including any attached addresses) |
| */ |
| void freeif(netif *ifs) { |
| netif *currif = ifs; |
| |
| while (currif != NULL) { |
| netaddr *addrP = currif->addr; |
| while (addrP != NULL) { |
| netaddr *next = addrP->next; |
| if (addrP->addr != NULL) |
| free(addrP->addr); |
| if (addrP->brdcast != NULL) |
| free(addrP->brdcast); |
| free(addrP); |
| addrP = next; |
| } |
| |
| free(currif->name); |
| |
| /* |
| * Don't forget to free the sub-interfaces. |
| */ |
| if (currif->childs != NULL) { |
| freeif(currif->childs); |
| } |
| |
| ifs = currif->next; |
| free(currif); |
| currif = ifs; |
| } |
| } |
| |
| /* |
| * Add an interface to the list. If known interface just link |
| * a new netaddr onto the list. If new interface create new |
| * netif structure. |
| */ |
| netif *addif(JNIEnv *env, netif *ifs, char *if_name, int index, int family, |
| struct sockaddr *new_addrP, int new_addrlen, short prefix) { |
| netif *currif = ifs, *parent; |
| netaddr *addrP; |
| #ifdef LIFNAMSIZ |
| char name[LIFNAMSIZ]; |
| char vname[LIFNAMSIZ]; |
| #else |
| char name[IFNAMSIZ]; |
| char vname[IFNAMSIZ]; |
| #endif |
| char *unit; |
| int isVirtual = 0; |
| |
| /* |
| * 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. |
| */ |
| strcpy(name, if_name); |
| |
| /* |
| * Create and populate the netaddr node. If allocation fails |
| * return an un-updated list. |
| */ |
| addrP = (netaddr *)malloc(sizeof(netaddr)); |
| if (addrP) { |
| addrP->addr = (struct sockaddr *)malloc(new_addrlen); |
| if (addrP->addr == NULL) { |
| free(addrP); |
| addrP = NULL; |
| } |
| } |
| if (addrP == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| return ifs; /* return untouched list */ |
| } |
| memcpy(addrP->addr, new_addrP, new_addrlen); |
| addrP->family = family; |
| |
| addrP->brdcast = NULL; |
| addrP->mask = prefix; |
| if (family == AF_INET) { |
| /* |
| * Deal with brodcast addr & subnet mask |
| */ |
| addrP->brdcast = getBroadcast(env, name); |
| if (addrP->brdcast) { |
| addrP->mask = getSubnet(env, name); |
| } |
| } |
| |
| vname[0] = 0; |
| unit = strchr(name, ':'); |
| if (unit != NULL) { |
| /** |
| * 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. |
| */ |
| struct ifreq if2; |
| int sock; |
| int len; |
| |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return ifs; /* return untouched list */ |
| } |
| |
| len = unit - name; |
| if (len > 0) { |
| // temporarily use vname to hold the parent name of the interface |
| // instead of creating another buffer. |
| memcpy(&vname, name, len); |
| vname[len] = '\0'; |
| |
| memset((char *) &if2, 0, sizeof(if2)); |
| strcpy(if2.ifr_name, vname); |
| |
| if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { |
| // Got access to parent, so create it if necessary. |
| strcpy(vname, name); |
| *unit = '\0'; |
| } else { |
| #if defined(__solaris__) && defined(AF_INET6) |
| struct lifreq lifr; |
| memset((char *) &lifr, 0, sizeof(lifr)); |
| strcpy(lifr.lifr_name, vname); |
| |
| /* Try with an IPv6 socket in case the interface has only IPv6 |
| * addresses assigned to it */ |
| close(sock); |
| sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0); |
| |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return ifs; /* return untouched list */ |
| } |
| |
| if (ioctl(sock, SIOCGLIFFLAGS, (char *)&lifr) >= 0) { |
| // Got access to parent, so create it if necessary. |
| strcpy(vname, name); |
| *unit = '\0'; |
| } else { |
| // failed to access parent interface do not create parent. |
| // We are a virtual interface with no parent. |
| isVirtual = 1; |
| vname[0] = 0; |
| } |
| #else |
| // failed to access parent interface do not create parent. |
| // We are a virtual interface with no parent. |
| isVirtual = 1; |
| vname[0] = 0; |
| #endif |
| } |
| } |
| close(sock); |
| } |
| |
| /* |
| * 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 an netif structure and |
| * insert it onto the list. |
| */ |
| if (currif == NULL) { |
| currif = (netif *)malloc(sizeof(netif)); |
| if (currif) { |
| currif->name = strdup(name); |
| if (currif->name == NULL) { |
| free(currif); |
| currif = NULL; |
| } |
| } |
| if (currif == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| return ifs; |
| } |
| currif->index = index; |
| 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; |
| |
| /** |
| * Let's 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) { |
| currif = (netif *)malloc(sizeof(netif)); |
| if (currif) { |
| currif->name = strdup(vname); |
| if (currif->name == NULL) { |
| free(currif); |
| currif = NULL; |
| } |
| } |
| if (currif == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| return ifs; |
| } |
| currif->index = index; |
| currif->addr = NULL; |
| /* Need to duplicate the addr entry? */ |
| currif->virtual = 1; |
| currif->childs = NULL; |
| currif->next = parent->childs; |
| parent->childs = currif; |
| } |
| |
| tmpaddr = (netaddr *) malloc(sizeof(netaddr)); |
| if (tmpaddr == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| return ifs; |
| } |
| memcpy(tmpaddr, addrP, sizeof(netaddr)); |
| /** |
| * Let's duplicate the address and broadcast address structures |
| * if there are any. |
| */ |
| if (addrP->addr != NULL) { |
| tmpaddr->addr = malloc(new_addrlen); |
| if (tmpaddr->addr != NULL) |
| memcpy(tmpaddr->addr, addrP->addr, new_addrlen); |
| } |
| if (addrP->brdcast != NULL) { |
| tmpaddr->brdcast = malloc(new_addrlen); |
| if (tmpaddr->brdcast != NULL) |
| memcpy(tmpaddr->brdcast, addrP->brdcast, new_addrlen); |
| } |
| tmpaddr->next = currif->addr; |
| currif->addr = tmpaddr; |
| } |
| |
| return ifs; |
| } |
| |
| /** |
| * Get flags from a NetworkInterface. |
| */ |
| static short getFlags(JNIEnv *env, jstring name) { |
| int sock; |
| struct ifreq if2; |
| jboolean isCopy; |
| const char* name_utf; |
| short ret = -1; |
| |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return -1; |
| } |
| |
| name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); |
| memset((char *) &if2, 0, sizeof(if2)); |
| strcpy(if2.ifr_name, name_utf); |
| |
| if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { |
| ret = if2.ifr_flags; |
| } else { |
| #if defined(__solaris__) && defined(AF_INET6) |
| /* Try with an IPv6 socket in case the interface has only IPv6 addresses assigned to it */ |
| struct lifreq lifr; |
| |
| close(sock); |
| sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0); |
| |
| if (sock < 0) { |
| (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return -1; |
| } |
| |
| memset((caddr_t)&lifr, 0, sizeof(lifr)); |
| strcpy((caddr_t)&(lifr.lifr_name), name_utf); |
| |
| if (ioctl(sock, SIOCGLIFFLAGS, (char *)&lifr) >= 0) { |
| ret = lifr.lifr_flags; |
| } else { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| } |
| #else |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| #endif |
| } |
| close(sock); |
| /* release the UTF string and interface list */ |
| (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| |
| return ret; |
| } |
| |
| /** |
| * Returns the IPv4 broadcast address of a named interface, if it exists. |
| * Returns 0 if it doesn't have one. |
| */ |
| static struct sockaddr *getBroadcast(JNIEnv *env, const char *ifname) { |
| int sock; |
| struct sockaddr *ret = NULL; |
| struct ifreq if2; |
| short flag = 0; |
| |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return ret; |
| } |
| |
| memset((char *) &if2, 0, sizeof(if2)); |
| strcpy(if2.ifr_name, ifname); |
| /* Let's make sure the interface does have a broadcast address */ |
| if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { |
| flag = if2.ifr_flags; |
| } else { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| } |
| if (flag & IFF_BROADCAST) { |
| /* It does, let's retrieve it*/ |
| if (ioctl(sock, SIOCGIFBRDADDR, (char *)&if2) >= 0) { |
| ret = (struct sockaddr*) malloc(sizeof(struct sockaddr)); |
| memcpy(ret, &if2.ifr_broadaddr, sizeof(struct sockaddr)); |
| } else { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| } |
| } |
| close(sock); |
| return ret; |
| } |
| |
| /** |
| * Returns the IPv4 subnet prefix length (aka subnet mask) for the named |
| * interface, if it has one, otherwise return -1. |
| */ |
| static short getSubnet(JNIEnv *env, const char *ifname) { |
| int sock; |
| unsigned int mask; |
| short ret; |
| struct ifreq if2; |
| |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return -1; |
| } |
| |
| memset((char *) &if2, 0, sizeof(if2)); |
| strcpy(if2.ifr_name, ifname); |
| if (ioctl(sock, SIOCGIFNETMASK, (char *)&if2) >= 0) { |
| mask = ntohl(((struct sockaddr_in*)&(if2.ifr_addr))->sin_addr.s_addr); |
| ret = 0; |
| while (mask) { |
| mask <<= 1; |
| ret++; |
| } |
| close(sock); |
| return ret; |
| } |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| close(sock); |
| return -1; |
| } |
| |
| #ifdef __solaris__ |
| #define DEV_PREFIX "/dev/" |
| |
| /** |
| * 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)) == -1) { |
| /* |
| * 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) { |
| NET_ThrowByNameWithLastError(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) { |
| NET_ThrowByNameWithLastError(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; |
| } |
| #endif |
| |
| /** |
| * Get the Hardware address (usually MAC address) for the named interface. |
| * 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. |
| */ |
| int getMacAddress(JNIEnv *env, const struct in_addr* addr, const char* ifname, |
| unsigned char *buf) { |
| int sock; |
| #ifdef __linux__ |
| static struct ifreq ifr; |
| int i; |
| |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return -1; |
| } |
| |
| strcpy(ifr.ifr_name, ifname); |
| |
| if (ioctl(sock, SIOCGIFHWADDR, &ifr) < 0) { |
| fprintf(stderr, "SIOCIFHWADDR: %s\n", |
| strerror(errno)); |
| close(sock); |
| return -1; |
| } |
| memcpy(buf, &ifr.ifr_hwaddr.sa_data, IFHWADDRLEN); |
| close(sock); |
| for (i = 0; i < IFHWADDRLEN; i++) { |
| if (buf[i] != 0) |
| return IFHWADDRLEN; |
| } |
| /* |
| * All bytes to 0 means no hardware address. |
| */ |
| return -1; |
| #else |
| struct arpreq arpreq; |
| struct sockaddr_in* sin; |
| struct sockaddr_in ipAddr; |
| int len; |
| |
| /** |
| * 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) { |
| return len; |
| } |
| if (addr == NULL) { |
| /** |
| * No IPv4 address for that interface, so can't do an ARP lookup. |
| */ |
| return -1; |
| } |
| 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; |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return -1; |
| } |
| |
| if (ioctl(sock, SIOCGARP, &arpreq) >= 0) { |
| close(sock); |
| memcpy(buf, &arpreq.arp_ha.sa_data[0], 6); |
| return 6; |
| } |
| |
| if (errno != ENXIO) { |
| // "No such device or address" means no hardware address, so it's |
| // normal don't throw an exception |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| } |
| close(sock); |
| #endif |
| return -1; |
| } |
| |
| /* |
| * 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) { |
| short val; |
| |
| val = getFlags(env, name); |
| if ( (val & IFF_UP) && (val & IFF_RUNNING)) |
| return JNI_TRUE; |
| return 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) { |
| if (getFlags(env, name) & IFF_POINTOPOINT) |
| return JNI_TRUE; |
| return 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) { |
| if (getFlags(env, name) & IFF_LOOPBACK) |
| return JNI_TRUE; |
| return 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) { |
| short val; |
| |
| val = getFlags(env, name); |
| if (val & IFF_MULTICAST) |
| return JNI_TRUE; |
| return 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 class, 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 = (*env)->GetStringUTFChars(env, name, &isCopy); |
| |
| 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, &iaddr, name_utf, mac); |
| } else { |
| len = getMacAddress(env, NULL, name_utf, mac); |
| } |
| if (len > 0) { |
| ret = (*env)->NewByteArray(env, len); |
| if (IS_NULL(ret)) { |
| /* we may have memory to free at the end of this */ |
| goto fexit; |
| } |
| (*env)->SetByteArrayRegion(env, ret, 0, len, (jbyte *) (mac)); |
| } |
| fexit: |
| /* 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 class, jstring name, jint index) { |
| jboolean isCopy; |
| int sock; |
| struct ifreq if2; |
| int ret = -1; |
| const char* name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); |
| |
| sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| if (sock < 0) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| } else { |
| |
| #ifdef __linux__ |
| memset((char *) &if2, 0, sizeof(if2)); |
| strcpy(if2.ifr_name, name_utf); |
| |
| if (ioctl(sock, SIOCGIFMTU, (char *)&if2) >= 0) { |
| ret= if2.ifr_mtu; |
| } else { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| } |
| #else /* Solaris */ |
| struct lifreq lifr; |
| memset((caddr_t)&lifr, 0, sizeof(lifr)); |
| strcpy((caddr_t)&(lifr.lifr_name), name_utf); |
| if (ioctl(sock, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) { |
| ret = lifr.lifr_mtu; |
| #ifdef AF_INET6 |
| } else { |
| /* Try wIth an IPv6 socket in case the interface has only IPv6 addresses assigned to it */ |
| close(sock); |
| sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0); |
| |
| if (sock < 0) { |
| (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "Socket creation failed"); |
| return -1; |
| } |
| |
| if (ioctl(sock, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) { |
| ret = lifr.lifr_mtu; |
| } else { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| } |
| } |
| #else |
| } else { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| "IOCTL failed"); |
| } |
| #endif |
| #endif |
| close(sock); |
| } |
| /* release the UTF string and interface list */ |
| (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| return ret; |
| } |
