/*
* 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 *ifList, *curr;
jint addr = getInetAddress_addr(env, iaObj);
jobject netifObj = NULL;
// Retained for now to support IPv4 only stack, java.net.preferIPv4Stack
if (ipv6_available()) {
return Java_java_net_NetworkInterface_getByInetAddress0_XP (env, cls, iaObj);
}
/* get the list of interfaces */
if (enumInterfaces(env, &ifList) < 0) {
return NULL;
}
/*
* Enumerate the addresses on each interface until we find a
* matching address.
*/
curr = ifList;
while (curr != NULL) {
int count;
netaddr *addrList;
netaddr *addrP;
/* enumerate the addresses on this interface */
count = enumAddresses_win(env, curr, &addrList);
if (count < 0) {
free_netif(ifList);
return NULL;
}
/* iterate through each address */
addrP = addrList;
while (addrP != NULL) {
if ((unsigned long)addr == ntohl(addrP->addr.him4.sin_addr.s_addr)) {
break;
}
addrP = addrP->next;
}
/*
* Address matched so create NetworkInterface for this interface
* and address list.
*/
if (addrP != NULL) {
/* createNetworkInterface will free addrList */
netifObj = createNetworkInterface(env, curr, count, addrList);
break;
}
/* on next interface */
curr = curr->next;
}
/* release the interface list */
free_netif(ifList);
return netifObj;
}
/*
* Class: java_net_NetworkInterface
* Method: getByInetAddress0
* Signature: (Ljava/net/InetAddress;)Ljava/net/NetworkInterface;
*/
JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByInetAddress0
(JNIEnv *env, jclass cls, jobject iaObj) {
netif *ifs, *curr;
int family = (getInetAddress_family(env, iaObj) == IPv4) ? AF_INET : AF_INET6;
jobject obj = NULL;
jboolean match = JNI_FALSE;
ifs = enumInterfaces(env);
if (ifs == NULL) {
return NULL;
}
curr = ifs;
while (curr != NULL) {
netaddr *addrP = curr->addr;
/*
* Iterate through each address on the interface
*/
while (addrP != NULL) {
if (family == addrP->family) {
if (family == AF_INET) {
int address1 = htonl(((struct sockaddr_in*)addrP->addr)->sin_addr.s_addr);
int address2 = getInetAddress_addr(env, iaObj);
if (address1 == address2) {
match = JNI_TRUE;
break;
}
}
#ifdef AF_INET6
if (family == AF_INET6) {
jbyte *bytes = (jbyte *)&(((struct sockaddr_in6*)addrP->addr)->sin6_addr);
jbyte caddr[16];
int i;
getInet6Address_ipaddress(env, iaObj, (char *)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;
}
