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dragonwell8_jdk
提交 fd2b5d2c 编写于 作者: D dsamersoff
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6931566: NetworkInterface is not working when interface name is more than 15 characters long 

Summary: Separate Linux and Solaris code, use lifreq under Solaris
Reviewed-by: chegar
上级 ae7f1139
隐藏空白更改
内联 并排
Showing with 920 addition and 850 deletion
src/solaris/native/java/net/NetworkInterface.c
浏览文件 @ fd2b5d2c
...@@ -23,6 +23,7 @@ ...@@ -23,6 +23,7 @@
* questions. * questions.
*/ */
#include <errno.h> #include <errno.h>
#include <strings.h> #include <strings.h>
#include <netinet/in.h> #include <netinet/in.h>
...@@ -33,23 +34,23 @@ ...@@ -33,23 +34,23 @@
#include <arpa/inet.h> #include <arpa/inet.h>
#include <net/if.h> #include <net/if.h>
#include <net/if_arp.h> #include <net/if_arp.h>
#ifdef __solaris__ #ifdef __solaris__
#include <sys/dlpi.h> #include <sys/dlpi.h>
#include <fcntl.h> #include <fcntl.h>
#include <stropts.h> #include <stropts.h>
#include <sys/sockio.h>
#endif #endif
#ifdef __linux__ #ifdef __linux__
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <bits/ioctls.h> #include <bits/ioctls.h>
#include <linux/sockios.h> #include <linux/sockios.h>
#include <sys/utsname.h> #include <sys/utsname.h>
#include <stdio.h> #include <stdio.h>
#else
#include <sys/sockio.h>
#endif #endif
#ifdef __linux__ #ifdef __linux__
#define ifr_index ifr_ifindex
#define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
#endif #endif
...@@ -108,20 +109,41 @@ static jfieldID ni_ibaddressID; ...@@ -108,20 +109,41 @@ static jfieldID ni_ibaddressID;
static jfieldID ni_ib4broadcastID; static jfieldID ni_ib4broadcastID;
static jfieldID ni_ib4maskID; static jfieldID ni_ib4maskID;
/** Private methods declarations **/
static jobject createNetworkInterface(JNIEnv *env, netif *ifs); 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 *enumInterfaces(JNIEnv *env);
static netif *enumIPv4Interfaces(JNIEnv *env, netif *ifs);
#ifdef AF_INET6 #ifdef AF_INET6
static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs); static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs);
#endif
static netif *addif(JNIEnv *env, int sock, const char * if_name, netif *ifs, struct sockaddr* ifr_addrP, 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 struct sockaddr *getBroadcast(JNIEnv *env, int sock, const char *name, struct sockaddr *brdcast_store);
static short getSubnet(JNIEnv *env, int sock, const char *ifname);
static int getIndex(JNIEnv *env, int sock, const char *ifname);
static int getFlags(JNIEnv *env, int sock, const char *ifname);
static int getMacAddress(JNIEnv *env, int sock, const char* ifname, const struct in_addr* addr, unsigned char *buf);
static int getMTU(JNIEnv *env, int sock, const char *ifname);
#ifdef __solaris__
static netif *enumIPvXInterfaces(JNIEnv *env, int sock, netif *ifs, int family);
static int getMacFromDevice(JNIEnv *env, const char* ifname, unsigned char* retbuf);
#endif #endif
static netif *addif(JNIEnv *env, netif *ifs, char *if_name, int index,
int family, struct sockaddr *new_addrP, int new_addrlen, /******************* Java entry points *****************************/
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 * Class: java_net_NetworkInterface
...@@ -172,7 +194,7 @@ JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0 ...@@ -172,7 +194,7 @@ JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0
netif *ifs, *curr; netif *ifs, *curr;
jboolean isCopy; jboolean isCopy;
const char* name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); const char* name_utf;
jobject obj = NULL; jobject obj = NULL;
ifs = enumInterfaces(env); ifs = enumInterfaces(env);
...@@ -180,6 +202,8 @@ JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0 ...@@ -180,6 +202,8 @@ JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0
return NULL; return NULL;
} }
name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
/* /*
* Search the list of interface based on name * Search the list of interface based on name
*/ */
...@@ -253,12 +277,13 @@ JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByInetAddress0 ...@@ -253,12 +277,13 @@ JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByInetAddress0
(JNIEnv *env, jclass cls, jobject iaObj) { (JNIEnv *env, jclass cls, jobject iaObj) {
netif *ifs, *curr; netif *ifs, *curr;
#ifdef AF_INET6 #ifdef AF_INET6
int family = (*env)->GetIntField(env, iaObj, ni_iafamilyID) == IPv4? int family = ( (*env)->GetIntField(env, iaObj, ni_iafamilyID) == IPv4 ) ? AF_INET : AF_INET6;
AF_INET : AF_INET6;
#else #else
int family = AF_INET; int family = AF_INET;
#endif #endif
jobject obj = NULL; jobject obj = NULL;
jboolean match = JNI_FALSE; jboolean match = JNI_FALSE;
...@@ -390,18 +415,169 @@ JNIEXPORT jobjectArray JNICALL Java_java_net_NetworkInterface_getAll ...@@ -390,18 +415,169 @@ JNIEXPORT jobjectArray JNICALL Java_java_net_NetworkInterface_getAll
return netIFArr; 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 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;
int sock;
jboolean isCopy;
const char* name_utf;
name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
if ((sock =openSocketWithFallback(env, name_utf)) < 0) {
(*env)->ReleaseStringUTFChars(env, name, name_utf);
return JNI_FALSE;
}
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, sock, name_utf, &iaddr, mac);
} else {
len = getMacAddress(env, sock, name_utf,NULL, 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);
close(sock);
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 ret = -1;
int sock;
const char* name_utf;
name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
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;
const char* name_utf;
name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
if ((sock = openSocketWithFallback(env, name_utf)) < 0) {
(*env)->ReleaseStringUTFChars(env, name, name_utf);
return -1;
}
name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
ret = getFlags(env, sock, name_utf);
close(sock);
(*env)->ReleaseStringUTFChars(env, name, name_utf);
if (ret < 0) {
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGLIFFLAGS failed");
return -1;
}
return ret;
}
/* /*
* Create a NetworkInterface object, populate the name and index, and * Create a NetworkInterface object, populate the name and index, and
* populate the InetAddress array based on the IP addresses for this * populate the InetAddress array based on the IP addresses for this
* interface. * interface.
*/ */
jobject createNetworkInterface(JNIEnv *env, netif *ifs) jobject createNetworkInterface(JNIEnv *env, netif *ifs) {
{
jobject netifObj; jobject netifObj;
jobject name; jobject name;
jobjectArray addrArr; jobjectArray addrArr;
jobjectArray bindArr; jobjectArray bindArr;
jobjectArray childArr; jobjectArray childArr;
netaddr *addrs;
jint addr_index, addr_count, bind_index; jint addr_index, addr_count, bind_index;
jint child_count, child_index; jint child_count, child_index;
netaddr *addrP; netaddr *addrP;
...@@ -441,7 +617,7 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs) ...@@ -441,7 +617,7 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs)
bindArr = (*env)->NewObjectArray(env, addr_count, ni_ibcls, NULL); bindArr = (*env)->NewObjectArray(env, addr_count, ni_ibcls, NULL);
if (bindArr == NULL) { if (bindArr == NULL) {
return NULL; return NULL;
} }
addrP = ifs->addr; addrP = ifs->addr;
addr_index = 0; addr_index = 0;
...@@ -453,23 +629,22 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs) ...@@ -453,23 +629,22 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs)
if (addrP->family == AF_INET) { if (addrP->family == AF_INET) {
iaObj = (*env)->NewObject(env, ni_ia4cls, ni_ia4ctrID); iaObj = (*env)->NewObject(env, ni_ia4cls, ni_ia4ctrID);
if (iaObj) { if (iaObj) {
(*env)->SetIntField(env, iaObj, ni_iaaddressID, (*env)->SetIntField(env, iaObj, ni_iaaddressID, htonl(((struct sockaddr_in*)addrP->addr)->sin_addr.s_addr));
htonl(((struct sockaddr_in*)addrP->addr)->sin_addr.s_addr));
} }
ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID); ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID);
if (ibObj) { if (ibObj) {
(*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj); (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj);
if (addrP->brdcast) { if (addrP->brdcast) {
jobject ia2Obj = NULL; jobject ia2Obj = NULL;
ia2Obj = (*env)->NewObject(env, ni_ia4cls, ni_ia4ctrID); ia2Obj = (*env)->NewObject(env, ni_ia4cls, ni_ia4ctrID);
if (ia2Obj) { if (ia2Obj) {
(*env)->SetIntField(env, ia2Obj, ni_iaaddressID, (*env)->SetIntField(env, ia2Obj, ni_iaaddressID,
htonl(((struct sockaddr_in*)addrP->brdcast)->sin_addr.s_addr)); htonl(((struct sockaddr_in*)addrP->brdcast)->sin_addr.s_addr));
(*env)->SetObjectField(env, ibObj, ni_ib4broadcastID, ia2Obj); (*env)->SetObjectField(env, ibObj, ni_ib4broadcastID, ia2Obj);
(*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask); (*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask);
} }
} }
(*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj); (*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj);
} }
} }
...@@ -483,14 +658,10 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs) ...@@ -483,14 +658,10 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs)
return NULL; return NULL;
} }
(*env)->SetByteArrayRegion(env, ipaddress, 0, 16, (*env)->SetByteArrayRegion(env, ipaddress, 0, 16,
(jbyte *)&(((struct sockaddr_in6*)addrP->addr)->sin6_addr)); (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; scope = ((struct sockaddr_in6*)addrP->addr)->sin6_scope_id;
#endif
if (scope != 0) { /* zero is default value, no need to set */ if (scope != 0) { /* zero is default value, no need to set */
(*env)->SetIntField(env, iaObj, ia6_scopeidID, scope); (*env)->SetIntField(env, iaObj, ia6_scopeidID, scope);
(*env)->SetBooleanField(env, iaObj, ia6_scopeidsetID, JNI_TRUE); (*env)->SetBooleanField(env, iaObj, ia6_scopeidsetID, JNI_TRUE);
...@@ -500,9 +671,9 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs) ...@@ -500,9 +671,9 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs)
} }
ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID); ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID);
if (ibObj) { if (ibObj) {
(*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj); (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj);
(*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask); (*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask);
(*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj); (*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj);
} }
} }
#endif #endif
...@@ -521,13 +692,13 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs) ...@@ -521,13 +692,13 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs)
child_count = 0; child_count = 0;
childP = ifs->childs; childP = ifs->childs;
while (childP) { while (childP) {
child_count++; child_count++;
childP = childP->next; childP = childP->next;
} }
childArr = (*env)->NewObjectArray(env, child_count, ni_class, NULL); childArr = (*env)->NewObjectArray(env, child_count, ni_class, NULL);
if (childArr == NULL) { if (childArr == NULL) {
return NULL; return NULL;
} }
/* /*
...@@ -539,7 +710,7 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs) ...@@ -539,7 +710,7 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs)
while(childP) { while(childP) {
tmp = createNetworkInterface(env, childP); tmp = createNetworkInterface(env, childP);
if (tmp == NULL) { if (tmp == NULL) {
return NULL; return NULL;
} }
(*env)->SetObjectField(env, tmp, ni_parentID, netifObj); (*env)->SetObjectField(env, tmp, ni_parentID, netifObj);
(*env)->SetObjectArrayElement(env, childArr, child_index++, tmp); (*env)->SetObjectArrayElement(env, childArr, child_index++, tmp);
...@@ -558,255 +729,368 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs) ...@@ -558,255 +729,368 @@ jobject createNetworkInterface(JNIEnv *env, netif *ifs)
*/ */
static netif *enumInterfaces(JNIEnv *env) { static netif *enumInterfaces(JNIEnv *env) {
netif *ifs; netif *ifs;
int sock;
/* /*
* Enumerate IPv4 addresses * Enumerate IPv4 addresses
*/ */
ifs = enumIPv4Interfaces(env, NULL);
if (ifs == NULL) { sock = openSocket(env, AF_INET);
if ((*env)->ExceptionOccurred(env)) { if (sock < 0 && (*env)->ExceptionOccurred(env)) {
return NULL; return NULL;
} }
ifs = enumIPv4Interfaces(env, sock, NULL);
close(sock);
if (ifs == NULL && (*env)->ExceptionOccurred(env)) {
return NULL;
} }
/* return partial list if exception occure in the middle of process ???*/
/* /*
* If IPv6 is available then enumerate IPv6 addresses. * If IPv6 is available then enumerate IPv6 addresses.
*/ */
#ifdef AF_INET6 #ifdef AF_INET6
if (ipv6_available()) { sock = openSocket(env, AF_INET6);
ifs = enumIPv6Interfaces(env, ifs); if (sock < 0 && (*env)->ExceptionOccurred(env)) {
freeif(ifs);
return NULL;
}
ifs = enumIPv6Interfaces(env, sock, ifs);
close(sock);
if ((*env)->ExceptionOccurred(env)) { if ((*env)->ExceptionOccurred(env)) {
freeif(ifs); freeif(ifs);
return NULL; return NULL;
} }
}
#endif #endif
return ifs; return ifs;
} }
#define CHECKED_MALLOC3(_pointer,_type,_size) \
do{ \
_pointer = (_type)malloc( _size ); \
if (_pointer == NULL) { \
JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); \
return ifs; /* return untouched list */ \
} \
} while(0)
/* /*
* Enumerates and returns all IPv4 interfaces * Free an interface list (including any attached addresses)
*/ */
static netif *enumIPv4Interfaces(JNIEnv *env, netif *ifs) { void freeif(netif *ifs) {
int sock; netif *currif = ifs;
struct ifconf ifc; netif *child = NULL;
struct ifreq *ifreqP;
char *buf;
int numifs;
unsigned i;
unsigned bufsize;
sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); while (currif != NULL) {
if (sock < 0) { netaddr *addrP = currif->addr;
/* while (addrP != NULL) {
* If EPROTONOSUPPORT is returned it means we don't have netaddr *next = addrP->next;
* IPv4 support so don't throw an exception. free(addrP);
*/ addrP = next;
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. * Don't forget to free the sub-interfaces.
* SIOCGIFCOUNT doesn't work */
*/ if (currif->childs != NULL) {
ifc.ifc_buf = NULL; freeif(currif->childs);
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); ifs = currif->next;
if (!buf) { free(currif);
JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); currif = ifs;
(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;
} }
}
/* netif *addif(JNIEnv *env, int sock, const char * if_name, netif *ifs, struct sockaddr* ifr_addrP, int family, short prefix) {
* Iterate through each interface netif *currif = ifs, *parent;
*/ netaddr *addrP;
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);
/* #ifdef __solaris__
* Try to get the interface index char name[LIFNAMSIZ], vname[LIFNAMSIZ];
* (Not supported on Solaris 2.6 or 7) #else
*/ char name[IFNAMSIZ], vname[IFNAMSIZ];
if (ioctl(sock, SIOCGIFINDEX, (char *)&if2) >= 0) { #endif
index = if2.ifr_index;
} else {
index = -1;
}
/* char *name_colonP;
* Add to the list int mask;
*/ int isVirtual = 0;
ifs = addif(env, ifs, ifreqP->ifr_name, index, AF_INET, int addr_size;
(struct sockaddr *)&(ifreqP->ifr_addr),
sizeof(struct sockaddr_in), 0);
/* /*
* If an exception occurred then free the list * If the interface name is a logical interface then we
*/ * remove the unit number so that we have the physical
if ((*env)->ExceptionOccurred(env)) { * interface (eg: hme0:1 -> hme0). NetworkInterface
close(sock); * currently doesn't have any concept of physical vs.
free(buf); * logical interfaces.
freeif(ifs); */
return NULL; strcpy(name, if_name);
} *vname = 0;
}
/* /*
* Free socket and buffer * Create and populate the netaddr node. If allocation fails
* return an un-updated list.
*/ */
close(sock); /*Allocate for addr and brdcast at once*/
free(buf);
return ifs;
}
#ifdef AF_INET6
addr_size = (family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
#else
addr_size = sizeof(struct sockaddr_in);
#endif
#if defined(__solaris__) && defined(AF_INET6) CHECKED_MALLOC3(addrP, netaddr *, sizeof(netaddr)+2*addr_size);
/* addrP->addr = (struct sockaddr *)( (char *) addrP+sizeof(netaddr) );
* Enumerates and returns all IPv6 interfaces on Solaris memcpy(addrP->addr, ifr_addrP, addr_size);
*/
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); addrP->family = family;
if (sock < 0) { addrP->brdcast = NULL;
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", addrP->mask = prefix;
"Failed to create IPv6 socket"); addrP->next = 0;
return ifs; if (family == AF_INET) {
} /*
* Deal with brodcast addr & subnet mask
*/
struct sockaddr * brdcast_to = (struct sockaddr *) ((char *) addrP + sizeof(netaddr) + addr_size);
addrP->brdcast = getBroadcast(env, sock, name, brdcast_to );
/* if (addrP->brdcast && (mask = getSubnet(env, sock, name)) != -1) {
* Get the interface count addrP->mask = mask;
*/ }
numifs.lifn_family = AF_UNSPEC; }
numifs.lifn_flags = 0;
if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) { /**
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", * Deal with virtual interface with colon notaion e.g. eth0:1
"ioctl SIOCGLIFNUM failed"); */
close(sock); name_colonP = strchr(name, ':');
return ifs; if (name_colonP != 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.
*/
*name_colonP = 0;
if (getFlags(env,sock,name) < 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] = ':';
}
}
/* /*
* Enumerate the interface configurations * Check if this is a "new" interface. Use the interface
* name for matching because index isn't supported on
* Solaris 2.6 & 7.
*/ */
bufsize = numifs.lifn_count * sizeof (struct lifreq); while (currif != NULL) {
buf = (char *)malloc(bufsize); if (strcmp(name, currif->name) == 0) {
if (!buf) { break;
JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); }
(void) close(sock); currif = currif->next;
return ifs;
} }
ifc.lifc_family = AF_UNSPEC;
ifc.lifc_flags = 0; /*
ifc.lifc_len = bufsize; * If "new" then create an netif structure and
ifc.lifc_buf = buf; * insert it onto the list.
if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) { */
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", if (currif == NULL) {
"ioctl SIOCGLIFCONF failed"); CHECKED_MALLOC3(currif, netif *, sizeof(netif)+IFNAMSIZ );
close(sock); currif->name = (char *) currif+sizeof(netif);
free(buf); strcpy(currif->name, name);
return ifs; currif->index = getIndex(env,sock,name);
currif->addr = NULL;
currif->childs = NULL;
currif->virtual = isVirtual;
currif->next = ifs;
ifs = currif;
} }
/* /*
* Iterate through each interface * Finally insert the address on the interface
*/ */
ifr = ifc.lifc_req; addrP->next = currif->addr;
for (n=0; n<numifs.lifn_count; n++, ifr++) { currif->addr = addrP;
int index = -1;
struct lifreq if2;
/* parent = currif;
* Ignore non-IPv6 addresses
*/ /**
if (ifr->lifr_addr.ss_family != AF_INET6) { * Let's deal with the virtual interface now.
continue; */
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)+ IFNAMSIZ );
currif->name = (char *) currif + sizeof(netif);
strcpy(currif->name, vname);
currif->index = getIndex(env,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;
}
/* Open socket for further ioct calls
* proto is AF_INET/AF_INET6
*/
static int openSocket(JNIEnv *env, int proto){
int sock;
if ((sock = JVM_Socket(proto, SOCK_DGRAM, 0)) < 0) {
/* /*
* Get the index * If EPROTONOSUPPORT is returned it means we don't have
* support for this proto so don't throw an exception.
*/ */
memset((char *)&if2, 0, sizeof(if2)); if (errno != EPROTONOSUPPORT) {
strcpy(if2.lifr_name, ifr->lifr_name); NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "Socket creation failed");
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;
} }
return -1;
}
/* add to the list */ return sock;
ifs = addif(env, ifs, ifr->lifr_name, index, AF_INET6, }
(struct sockaddr *)&(ifr->lifr_addr),
sizeof(struct sockaddr_in6), (short) ifr->lifr_addrlen);
/** Linux **/
#ifdef __linux__
/* Open socket for further ioct calls, try v4 socket first and
* if it falls return v6 socket
*/
#ifdef AF_INET6
static int openSocketWithFallback(JNIEnv *env, const char *ifname){
int sock;
struct ifreq if2;
if ((sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
if (errno == EPROTONOSUPPORT){
if ( (sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0)) < 0 ){
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
return -1;
}
}
else{ // errno is not NOSUPPORT
NET_ThrowByNameWithLastError(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;
}
#else
static int openSocketWithFallback(JNIEnv *env, const char *ifname){
return openSocket(env,AF_INET);
}
#endif
static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
struct ifconf ifc;
struct ifreq *ifreqP;
char *buf;
int numifs;
unsigned i;
/* 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");
return ifs;
}
CHECKED_MALLOC3(buf,char *, ifc.ifc_len);
ifc.ifc_buf = buf;
if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "ioctl SIOCGIFCONF failed");
(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++) {
/* /*
* If an exception occurred we return * Add to the list
*/
ifs = addif(env, sock, ifreqP->ifr_name, ifs, (struct sockaddr *) & (ifreqP->ifr_addr), AF_INET, 0);
/*
* If an exception occurred then free the list
*/ */
if ((*env)->ExceptionOccurred(env)) { if ((*env)->ExceptionOccurred(env)) {
close(sock);
free(buf); free(buf);
return ifs; freeif(ifs);
return NULL;
} }
} }
close(sock); /*
* Free socket and buffer
*/
free(buf); free(buf);
return ifs; return ifs;
} }
#endif
#if defined(__linux__) && defined(AF_INET6)
/* /*
* Enumerates and returns all IPv6 interfaces on Linux * Enumerates and returns all IPv6 interfaces on Linux
*/ */
static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) {
#ifdef AF_INET6
static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
FILE *f; FILE *f;
char addr6[40], devname[20]; char addr6[40], devname[20];
char addr6p[8][5]; char addr6p[8][5];
...@@ -815,23 +1099,24 @@ static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) { ...@@ -815,23 +1099,24 @@ static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) {
if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) { 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", 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[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], addr6p[5], addr6p[6], addr6p[7],
addr6p[4], addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope, &dad_status, devname) != EOF) {
&if_idx, &plen, &scope, &dad_status, devname) != EOF) {
struct netif *ifs_ptr = NULL;
struct netif *last_ptr = NULL;
struct sockaddr_in6 addr; struct sockaddr_in6 addr;
sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
inet_pton(AF_INET6, addr6, ipv6addr); inet_pton(AF_INET6, addr6, ipv6addr);
memset(&addr, 0, sizeof(struct sockaddr_in6)); memset(&addr, 0, sizeof(struct sockaddr_in6));
memcpy((void*)addr.sin6_addr.s6_addr, (const void*)ipv6addr, 16); memcpy((void*)addr.sin6_addr.s6_addr, (const void*)ipv6addr, 16);
addr.sin6_scope_id = if_idx; addr.sin6_scope_id = if_idx;
ifs = addif(env, ifs, devname, if_idx, AF_INET6, ifs = addif(env, sock, devname, ifs, (struct sockaddr *)&addr, AF_INET6, plen);
(struct sockaddr *)&addr,
sizeof(struct sockaddr_in6), plen);
/* /*
* If an exception occurred then return the list as is. * If an exception occurred then return the list as is.
...@@ -840,421 +1125,365 @@ static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) { ...@@ -840,421 +1125,365 @@ static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) {
fclose(f); fclose(f);
return ifs; return ifs;
} }
} }
fclose(f); fclose(f);
} }
return ifs; return ifs;
} }
#endif #endif
/* static int getIndex(JNIEnv *env, int sock, const char *name){
* Free an interface list (including any attached addresses) /*
* Try to get the interface index
* (Not supported on Solaris 2.6 or 7)
*/
struct ifreq if2;
strcpy(if2.ifr_name, name);
if (ioctl(sock, SIOCGIFINDEX, (char *)&if2) < 0) {
return -1;
}
return if2.ifr_ifindex;
}
/**
* Returns the IPv4 broadcast address of a named interface, if it exists.
* Returns 0 if it doesn't have one.
*/ */
void freeif(netif *ifs) { static struct sockaddr *getBroadcast(JNIEnv *env, int sock, const char *ifname, struct sockaddr *brdcast_store) {
netif *currif = ifs; struct sockaddr *ret = NULL;
struct ifreq if2;
while (currif != NULL) { memset((char *) &if2, 0, sizeof(if2));
netaddr *addrP = currif->addr; strcpy(if2.ifr_name, ifname);
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); /* Let's make sure the interface does have a broadcast address */
if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0) {
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGIFFLAGS failed");
return ret;
}
/* if (if2.ifr_flags & IFF_BROADCAST) {
* Don't forget to free the sub-interfaces. /* It does, let's retrieve it*/
*/ if (ioctl(sock, SIOCGIFBRDADDR, (char *)&if2) < 0) {
if (currif->childs != NULL) { NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGIFBRDADDR failed");
freeif(currif->childs); return ret;
} }
ifs = currif->next; ret = brdcast_store;
free(currif); memcpy(ret, &if2.ifr_broadaddr, sizeof(struct sockaddr));
currif = ifs; }
}
return ret;
} }
/* /**
* Add an interface to the list. If known interface just link * Returns the IPv4 subnet prefix length (aka subnet mask) for the named
* a new netaddr onto the list. If new interface create new * interface, if it has one, otherwise return -1.
* netif structure.
*/ */
netif *addif(JNIEnv *env, netif *ifs, char *if_name, int index, int family, static short getSubnet(JNIEnv *env, int sock, const char *ifname) {
struct sockaddr *new_addrP, int new_addrlen, short prefix) { unsigned int mask;
netif *currif = ifs, *parent; short ret;
netaddr *addrP; struct ifreq if2;
#ifdef LIFNAMSIZ
char name[LIFNAMSIZ];
char vname[LIFNAMSIZ];
#else
char name[IFNAMSIZ];
char vname[IFNAMSIZ];
#endif
char *unit;
int isVirtual = 0;
/* memset((char *) &if2, 0, sizeof(if2));
* If the interface name is a logical interface then we strcpy(if2.ifr_name, ifname);
* 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);
/* if (ioctl(sock, SIOCGIFNETMASK, (char *)&if2) < 0) {
* Create and populate the netaddr node. If allocation fails NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGIFNETMASK failed");
* return an un-updated list. return -1;
*/
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"); mask = ntohl(((struct sockaddr_in*)&(if2.ifr_addr))->sin_addr.s_addr);
return ifs; /* return untouched list */ ret = 0;
while (mask) {
mask <<= 1;
ret++;
} }
memcpy(addrP->addr, new_addrP, new_addrlen);
addrP->family = family;
addrP->brdcast = NULL; return ret;
addrP->mask = prefix; }
if (family == AF_INET) {
/* /**
* Deal with brodcast addr & subnet mask * 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
addrP->brdcast = getBroadcast(env, name); * MAC address. Returns -1 if there is no hardware address on that interface.
if (addrP->brdcast) { */
addrP->mask = getSubnet(env, name); static int getMacAddress(JNIEnv *env, int sock, const char* ifname, const struct in_addr* addr, unsigned char *buf) {
} static struct ifreq ifr;
int i;
strcpy(ifr.ifr_name, ifname);
if (ioctl(sock, SIOCGIFHWADDR, &ifr) < 0) {
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGIFHWADDR failed");
return -1;
} }
vname[0] = 0; memcpy(buf, &ifr.ifr_hwaddr.sa_data, IFHWADDRLEN);
unit = strchr(name, ':');
if (unit != NULL) { /*
/** * All bytes to 0 means no hardware address.
* 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; for (i = 0; i < IFHWADDRLEN; i++) {
if (len > 0) { if (buf[i] != 0)
// temporarily use vname to hold the parent name of the interface return IFHWADDRLEN;
// instead of creating another buffer. }
memcpy(&vname, name, len);
vname[len] = '\0'; return -1;
}
static int getMTU(JNIEnv *env, int sock, const char *ifname) {
struct ifreq if2;
memset((char *) &if2, 0, sizeof(if2));
strcpy(if2.ifr_name, ifname);
if (ioctl(sock, SIOCGIFMTU, (char *)&if2) < 0) {
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGIFMTU failed");
return -1;
}
return if2.ifr_mtu;
}
static int getFlags(JNIEnv *env, int sock, const char *ifname) {
struct ifreq if2;
int ret = -1;
memset((char *) &if2, 0, sizeof(if2));
strcpy(if2.ifr_name, ifname);
if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0){
return -1;
}
return if2.ifr_flags;
}
#endif
/** Solaris **/
#ifdef __solaris__
/* Open socket for further ioct calls, try v4 socket first and
* if it falls return v6 socket
*/
#ifdef AF_INET6
static int openSocketWithFallback(JNIEnv *env, const char *ifname){
int sock, alreadyV6 = 0;
struct lifreq if2;
if ((sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
if (errno == EPROTONOSUPPORT){
if ( (sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0)) < 0 ){
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
return -1;
}
alreadyV6=1;
}
else{ // errno is not NOSUPPORT
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
return -1;
}
}
/**
* Solaris requires that we have IPv6 socket to query an
* interface without IPv4 address - check it here
* POSIX 1 require the kernell to return ENOTTY if the call is
* unappropriate for device e.g. NETMASK for device having IPv6
* only address but not all devices follows the standart so
* fallback on any error. It's not an ecology friendly but more
* reliable.
*/
if (! alreadyV6 ){
memset((char *) &if2, 0, sizeof(if2)); memset((char *) &if2, 0, sizeof(if2));
strcpy(if2.ifr_name, vname); strcpy(if2.lifr_name, ifname);
if (ioctl(sock, SIOCGLIFNETMASK, (char *)&if2) < 0) {
close(sock);
if ( (sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0)) < 0 ){
NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
return -1;
}
}
}
if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { return sock;
// 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 #else
// failed to access parent interface do not create parent. static int openSocketWithFallback(JNIEnv *env, const char *ifname){
// We are a virtual interface with no parent. return openSocket(env,AF_INET);
isVirtual = 1; }
vname[0] = 0; #endif
/*
* Enumerates and returns all IPv4 interfaces
* (linux verison)
*/
static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
return enumIPvXInterfaces(env,sock, ifs, AF_INET);
}
#ifdef AF_INET6
static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
return enumIPvXInterfaces(env,sock, ifs, AF_INET6);
}
#endif #endif
}
} /*
close(sock); Enumerates and returns all interfaces on Solaris
} use the same code for IPv4 and IPv6
*/
static netif *enumIPvXInterfaces(JNIEnv *env, int sock, netif *ifs, int family) {
struct lifconf ifc;
struct lifreq *ifr;
int n;
char *buf;
struct lifnum numifs;
unsigned bufsize;
/* /*
* Check if this is a "new" interface. Use the interface * Get the interface count
* name for matching because index isn't supported on
* Solaris 2.6 & 7.
*/ */
while (currif != NULL) { numifs.lifn_family = family;
if (strcmp(name, currif->name) == 0) { numifs.lifn_flags = 0;
break; if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) {
} NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "ioctl SIOCGLIFNUM failed");
currif = currif->next; return ifs;
} }
/* /*
* If "new" then create an netif structure and * Enumerate the interface configurations
* insert it onto the list.
*/ */
if (currif == NULL) { bufsize = numifs.lifn_count * sizeof (struct lifreq);
currif = (netif *)malloc(sizeof(netif)); CHECKED_MALLOC3(buf, char *, bufsize);
if (currif) {
currif->name = strdup(name); ifc.lifc_family = family;
if (currif->name == NULL) { ifc.lifc_flags = 0;
free(currif); ifc.lifc_len = bufsize;
currif = NULL; ifc.lifc_buf = buf;
} if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) {
} NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", "ioctl SIOCGLIFCONF failed");
if (currif == NULL) { free(buf);
JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); return ifs;
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 * Iterate through each interface
*/ */
addrP->next = currif->addr; ifr = ifc.lifc_req;
currif->addr = addrP; for (n=0; n<numifs.lifn_count; n++, ifr++) {
int index = -1;
parent = currif; struct lifreq if2;
/** /*
* Let's deal with the virtual interface now. * Ignore either IPv4 or IPv6 addresses
*/ */
if (vname[0]) { if (ifr->lifr_addr.ss_family != family) {
netaddr *tmpaddr; continue;
}
currif = parent->childs; /* add to the list */
ifs = addif(env, sock,ifr->lifr_name, ifs, (struct sockaddr *)&(ifr->lifr_addr),family, (short) ifr->lifr_addrlen);
while (currif != NULL) { /*
if (strcmp(vname, currif->name) == 0) { * If an exception occurred we return immediately
break; */
} if ((*env)->ExceptionOccurred(env)) {
currif = currif->next; free(buf);
} return ifs;
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;
}
free(buf);
return ifs; return ifs;
} }
/** static int getIndex(JNIEnv *env, int sock, const char *name){
* Get flags from a NetworkInterface. /*
*/ * Try to get the interface index
static short getFlags(JNIEnv *env, jstring name) { * (Not supported on Solaris 2.6 or 7)
int sock; */
struct ifreq if2; struct lifreq if2;
jboolean isCopy; strcpy(if2.lifr_name, name);
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) { if (ioctl(sock, SIOCGLIFINDEX, (char *)&if2) < 0) {
ret = lifr.lifr_flags; return -1;
} 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; return if2.lifr_index;
} }
/** /**
* Returns the IPv4 broadcast address of a named interface, if it exists. * Returns the IPv4 broadcast address of a named interface, if it exists.
* Returns 0 if it doesn't have one. * Returns 0 if it doesn't have one.
*/ */
static struct sockaddr *getBroadcast(JNIEnv *env, const char *ifname) { static struct sockaddr *getBroadcast(JNIEnv *env, int sock, const char *ifname, struct sockaddr *brdcast_store) {
int sock; struct sockaddr *ret = NULL;
struct sockaddr *ret = NULL; struct lifreq if2;
struct ifreq if2;
short flag = 0;
sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); memset((char *) &if2, 0, sizeof(if2));
if (sock < 0) { strcpy(if2.lifr_name, ifname);
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
"Socket creation failed");
return ret;
}
memset((char *) &if2, 0, sizeof(if2)); /* Let's make sure the interface does have a broadcast address */
strcpy(if2.ifr_name, ifname); if (ioctl(sock, SIOCGLIFFLAGS, (char *)&if2) < 0) {
/* Let's make sure the interface does have a broadcast address */ NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGLIFFLAGS failed");
if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { return ret;
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); if (if2.lifr_flags & IFF_BROADCAST) {
return ret; /* It does, let's retrieve it*/
if (ioctl(sock, SIOCGLIFBRDADDR, (char *)&if2) < 0) {
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGLIFBRDADDR failed");
return ret;
}
ret = brdcast_store;
memcpy(ret, &if2.lifr_broadaddr, sizeof(struct sockaddr));
}
return ret;
} }
/** /**
* Returns the IPv4 subnet prefix length (aka subnet mask) for the named * Returns the IPv4 subnet prefix length (aka subnet mask) for the named
* interface, if it has one, otherwise return -1. * interface, if it has one, otherwise return -1.
*/ */
static short getSubnet(JNIEnv *env, const char *ifname) { static short getSubnet(JNIEnv *env, int sock, const char *ifname) {
int sock; unsigned int mask;
unsigned int mask; short ret;
short ret; struct lifreq if2;
struct ifreq if2;
sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); memset((char *) &if2, 0, sizeof(if2));
if (sock < 0) { strcpy(if2.lifr_name, ifname);
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
"Socket creation failed");
return -1;
}
memset((char *) &if2, 0, sizeof(if2)); if (ioctl(sock, SIOCGLIFNETMASK, (char *)&if2) < 0) {
strcpy(if2.ifr_name, ifname); NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGLIFNETMASK failed");
if (ioctl(sock, SIOCGIFNETMASK, (char *)&if2) >= 0) { return -1;
mask = ntohl(((struct sockaddr_in*)&(if2.ifr_addr))->sin_addr.s_addr); }
mask = ntohl(((struct sockaddr_in*)&(if2.lifr_addr))->sin_addr.s_addr);
ret = 0; ret = 0;
while (mask) { while (mask) {
mask <<= 1; mask <<= 1;
ret++; ret++;
} }
close(sock);
return ret; return ret;
}
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
"IOCTL failed");
close(sock);
return -1;
} }
#ifdef __solaris__
#define DEV_PREFIX "/dev/"
#define DEV_PREFIX "/dev/"
/** /**
* Solaris specific DLPI code to get hardware address from a device. * Solaris specific DLPI code to get hardware address from a device.
...@@ -1262,306 +1491,147 @@ static short getSubnet(JNIEnv *env, const char *ifname) { ...@@ -1262,306 +1491,147 @@ static short getSubnet(JNIEnv *env, const char *ifname) {
* privileges (i.e. be root). * privileges (i.e. be root).
*/ */
static int getMacFromDevice(JNIEnv *env, const char* ifname, unsigned char* retbuf) { static int getMacFromDevice(JNIEnv *env, const char* ifname, unsigned char* retbuf) {
char style1dev[MAXPATHLEN]; char style1dev[MAXPATHLEN];
int fd; int fd;
dl_phys_addr_req_t dlpareq; dl_phys_addr_req_t dlpareq;
dl_phys_addr_ack_t *dlpaack; dl_phys_addr_ack_t *dlpaack;
struct strbuf msg; struct strbuf msg;
char buf[128]; char buf[128];
int flags = 0; int flags = 0;
/** /**
* Device is in /dev * Device is in /dev
* e.g.: /dev/bge0 * e.g.: /dev/bge0
*/ */
strcpy(style1dev, DEV_PREFIX); strcpy(style1dev, DEV_PREFIX);
strcat(style1dev, ifname); strcat(style1dev, ifname);
if ((fd = open(style1dev, O_RDWR)) == -1) { if ((fd = open(style1dev, O_RDWR)) < 0) {
/* /*
* Can't open it. We probably are missing the privilege. * Can't open it. We probably are missing the privilege.
* We'll have to try something else * We'll have to try something else
*/ */
return 0; return 0;
} }
dlpareq.dl_primitive = DL_PHYS_ADDR_REQ;
dlpareq.dl_addr_type = DL_CURR_PHYS_ADDR; dlpareq.dl_primitive = DL_PHYS_ADDR_REQ;
msg.buf = (char *)&dlpareq; dlpareq.dl_addr_type = DL_CURR_PHYS_ADDR;
msg.len = DL_PHYS_ADDR_REQ_SIZE;
if (putmsg(fd, &msg, NULL, 0) < 0) { msg.buf = (char *)&dlpareq;
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", msg.len = DL_PHYS_ADDR_REQ_SIZE;
"putmsg failed");
return -1; if (putmsg(fd, &msg, NULL, 0) < 0) {
} NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "putmsg failed");
dlpaack = (dl_phys_addr_ack_t *)buf; return -1;
msg.buf = (char *)buf; }
msg.len = 0;
msg.maxlen = sizeof (buf); dlpaack = (dl_phys_addr_ack_t *)buf;
if (getmsg(fd, &msg, NULL, &flags) < 0) {
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", msg.buf = (char *)buf;
"getmsg failed"); msg.len = 0;
return -1; msg.maxlen = sizeof (buf);
} if (getmsg(fd, &msg, NULL, &flags) < 0) {
if (msg.len < DL_PHYS_ADDR_ACK_SIZE || NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "getmsg failed");
dlpaack->dl_primitive != DL_PHYS_ADDR_ACK) { return -1;
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", }
"Couldn't obtain phys addr\n");
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); memcpy(retbuf, &buf[dlpaack->dl_addr_offset], dlpaack->dl_addr_length);
return dlpaack->dl_addr_length; return dlpaack->dl_addr_length;
} }
#endif
/** /**
* Get the Hardware address (usually MAC address) for the named interface. * 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 * 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. * 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, static int getMacAddress(JNIEnv *env, int sock, const char *ifname, const struct in_addr* addr, unsigned char *buf) {
unsigned char *buf) { struct arpreq arpreq;
int sock; struct sockaddr_in* sin;
#ifdef __linux__ struct sockaddr_in ipAddr;
static struct ifreq ifr; int len, i;
int i;
/**
* 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) {
/*DLPI failed - trying to do arp lookup*/
if (addr == NULL) {
/**
* No IPv4 address for that interface, so can't do an ARP lookup.
*/
return -1;
}
sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); 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) {
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");
return -1;
}
}
if (sock < 0) { memcpy(buf, &arpreq.arp_ha.sa_data[0], len );
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
"Socket creation failed");
return -1;
} }
strcpy(ifr.ifr_name, ifname); /*
* All bytes to 0 means no hardware address.
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) { for (i = 0; i < len; i++) {
close(sock); if (buf[i] != 0)
memcpy(buf, &arpreq.arp_ha.sa_data[0], 6); return len;
return 6; }
}
if (errno != ENXIO) { return -1;
// "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;
} }
/* static int getMTU(JNIEnv *env, int sock, const char *ifname) {
* Class: java_net_NetworkInterface struct lifreq if2;
* 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;
}
/* memset((char *) &if2, 0, sizeof(if2));
* Class: java_net_NetworkInterface strcpy(if2.lifr_name, ifname);
* 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;
}
/* if (ioctl(sock, SIOCGLIFMTU, (char *)&if2) < 0) {
* Class: java_net_NetworkInterface NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGLIFMTU failed");
* Method: isLoopback0 return -1;
* 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;
}
/* return if2.lifr_mtu;
* 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;
}
/* static int getFlags(JNIEnv *env, int sock, const char *ifname) {
* Class: java_net_NetworkInterface struct lifreq lifr;
* Method: getMTU0 memset((caddr_t)&lifr, 0, sizeof(lifr));
* Signature: ([bLjava/lang/String;I)I strcpy((caddr_t)&(lifr.lifr_name), ifname);
*/
JNIEXPORT jint JNICALL Java_java_net_NetworkInterface_getMTU0(JNIEnv *env, jclass class, jstring name, jint index) { if (ioctl(sock, SIOCGLIFFLAGS, (char *)&lifr) < 0) {
jboolean isCopy; NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", "IOCTL SIOCGLIFFLAGS failed");
int sock; return -1;
struct ifreq if2; }
int ret = -1;
const char* name_utf = (*env)->GetStringUTFChars(env, name, &isCopy);
sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); return lifr.lifr_flags;
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) { #endif
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;
}
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