| /* |
| * Copyright (c) 2003, 2016, 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 "net_util.h" |
| #include "NetworkInterface.h" |
| |
| #include "java_net_NetworkInterface.h" |
| |
| /* |
| * Windows implementation of the java.net.NetworkInterface native methods. |
| * This module provides the implementations of getAll, getByName, getByIndex, |
| * and getByAddress. |
| */ |
| |
| extern int enumAddresses_win(JNIEnv *env, netif *netifP, netaddr **netaddrPP); |
| int getAddrsFromAdapter(IP_ADAPTER_ADDRESSES *ptr, netaddr **netaddrPP); |
| |
| #ifdef DEBUG |
| void printnif (netif *nif) { |
| #ifdef _WIN64 |
| printf ("nif:0x%I64x name:%s\n", nif,nif->name); |
| #else |
| printf ("nif:0x%x name:%s\n", nif,nif->name); |
| #endif |
| if (nif->dNameIsUnicode) { |
| printf ("dName:%S index:%d ", nif->displayName,nif->index); |
| } else { |
| printf ("dName:%s index:%d ", nif->displayName,nif->index); |
| } |
| printf ("naddrs:%d\n", nif->naddrs); |
| } |
| |
| void printnifs (netif *netifPP, char *str) { |
| netif *nif; |
| printf ("%s\n", str); |
| for (nif=netifPP; nif!=NULL; nif=nif->next) { |
| printnif (nif); |
| } |
| printf("-----------------\n"); |
| } |
| |
| #endif |
| |
| static int bufsize = 4096; |
| |
| /* |
| * return an array of IP_ADAPTER_ADDRESSES containing one element |
| * for each adapter on the system. Returned in *adapters. |
| * Buffer is malloc'd and must be freed (unless error returned) |
| */ |
| static int getAdapters (JNIEnv *env, IP_ADAPTER_ADDRESSES **adapters) { |
| DWORD ret, flags; |
| IP_ADAPTER_ADDRESSES *adapterInfo; |
| ULONG len; |
| char *error_msg_buf = NULL; |
| size_t error_msg_buf_size = |
| strlen("IP Helper Library GetAdaptersAddresses function failed" |
| " with error == ") + 10; |
| int _ret = 0; |
| |
| |
| adapterInfo = (IP_ADAPTER_ADDRESSES *)malloc (bufsize); |
| if (adapterInfo == NULL) { |
| JNU_ThrowByName(env, "java/lang/OutOfMemoryError", |
| "Native heap allocation failure"); |
| return -1; |
| } |
| |
| len = bufsize; |
| flags = GAA_FLAG_SKIP_DNS_SERVER; |
| flags |= GAA_FLAG_SKIP_MULTICAST; |
| flags |= GAA_FLAG_INCLUDE_PREFIX; |
| ret = GetAdaptersAddresses(AF_UNSPEC, flags, NULL, adapterInfo, &len); |
| |
| if (ret == ERROR_BUFFER_OVERFLOW) { |
| IP_ADAPTER_ADDRESSES * newAdapterInfo = NULL; |
| if (len < (ULONG_MAX - bufsize)) { |
| len = len + bufsize; |
| } |
| newAdapterInfo = |
| (IP_ADAPTER_ADDRESSES *) realloc (adapterInfo, len); |
| if (newAdapterInfo == NULL) { |
| free(adapterInfo); |
| JNU_ThrowByName(env, "java/lang/OutOfMemoryError", |
| "Native heap allocation failure"); |
| return -1; |
| } |
| |
| adapterInfo = newAdapterInfo; |
| |
| ret = GetAdaptersAddresses(AF_UNSPEC, flags, NULL, adapterInfo, &len); |
| } |
| |
| if (ret != ERROR_SUCCESS) { |
| free (adapterInfo); |
| if (ret == ERROR_INSUFFICIENT_BUFFER) { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failed " |
| "with ERROR_INSUFFICIENT_BUFFER"); |
| } else if (ret == ERROR_ADDRESS_NOT_ASSOCIATED ) { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failed " |
| "with ERROR_ADDRESS_NOT_ASSOCIATED"); |
| } else { |
| error_msg_buf = (char *)malloc(error_msg_buf_size); |
| if (error_msg_buf != NULL) { |
| memset(error_msg_buf, 0, error_msg_buf_size); |
| _ret = _snprintf_s(error_msg_buf, error_msg_buf_size, |
| _TRUNCATE, "IP Helper Library GetAdaptersAddresses " |
| "function failed with error == %d", ret); |
| if (_ret != -1) { |
| JNU_ThrowByName(env, "java/lang/Error", error_msg_buf); |
| } else { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failure"); |
| } |
| } else { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failed"); |
| } |
| } |
| return -1; |
| } |
| *adapters = adapterInfo; |
| return ERROR_SUCCESS; |
| } |
| |
| /* |
| * return an array of IP_ADAPTER_ADDRESSES containing one element |
| * for each adapter on the system. Returned in *adapters. |
| * Buffer is malloc'd and must be freed (unless error returned) |
| */ |
| IP_ADAPTER_ADDRESSES *getAdapter (JNIEnv *env, jint index) { |
| DWORD flags, val; |
| IP_ADAPTER_ADDRESSES *adapterInfo, *ptr, *ret; |
| ULONG len; |
| char *error_msg_buf = NULL; |
| size_t error_msg_buf_size = |
| strlen("IP Helper Library GetAdaptersAddresses function failed with error == ") + 10; |
| int _ret = 0; |
| adapterInfo = (IP_ADAPTER_ADDRESSES *)malloc (bufsize); |
| if (adapterInfo == NULL) { |
| JNU_ThrowByName(env, "java/lang/OutOfMemoryError", |
| "Native heap allocation failure"); |
| return NULL; |
| } |
| len = bufsize; |
| flags = GAA_FLAG_SKIP_DNS_SERVER; |
| flags |= GAA_FLAG_SKIP_MULTICAST; |
| flags |= GAA_FLAG_INCLUDE_PREFIX; |
| val = GetAdaptersAddresses(AF_UNSPEC, flags, NULL, adapterInfo, &len); |
| if (val == ERROR_BUFFER_OVERFLOW) { |
| IP_ADAPTER_ADDRESSES * newAdapterInfo = NULL; |
| if (len < (ULONG_MAX - bufsize)) { |
| len = len + bufsize; |
| } |
| newAdapterInfo = |
| (IP_ADAPTER_ADDRESSES *) realloc (adapterInfo, len); |
| if (newAdapterInfo == NULL) { |
| free(adapterInfo); |
| JNU_ThrowByName(env, "java/lang/OutOfMemoryError", |
| "Native heap allocation failure"); |
| return NULL; |
| } |
| |
| adapterInfo = newAdapterInfo; |
| |
| val = GetAdaptersAddresses(AF_UNSPEC, flags, NULL, adapterInfo, &len); |
| } |
| |
| if (val != ERROR_SUCCESS) { |
| free (adapterInfo); |
| if (val == ERROR_INSUFFICIENT_BUFFER) { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failed " |
| "with ERROR_INSUFFICIENT_BUFFER"); |
| } else if (val == ERROR_ADDRESS_NOT_ASSOCIATED ) { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failed " |
| "with ERROR_ADDRESS_NOT_ASSOCIATED"); |
| } else { |
| error_msg_buf = (char *)malloc(error_msg_buf_size); |
| if (error_msg_buf != NULL) { |
| memset(error_msg_buf, 0, error_msg_buf_size); |
| _ret = _snprintf_s(error_msg_buf, error_msg_buf_size, |
| _TRUNCATE, "IP Helper Library GetAdaptersAddresses function failed " |
| "with error == %d", val); |
| if (_ret != -1) { |
| JNU_ThrowByName(env, "java/lang/Error", error_msg_buf); |
| } else { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failure"); |
| } |
| } else { |
| JNU_ThrowByName(env, "java/lang/Error", |
| "IP Helper Library GetAdaptersAddresses function failed"); |
| } |
| } |
| return NULL; |
| } |
| |
| ptr = adapterInfo; |
| ret = NULL; |
| while (ptr != NULL) { |
| // in theory the IPv4 index and the IPv6 index can be the same |
| // where an interface is enabled for v4 and v6 |
| // IfIndex == 0 IPv4 not available on this interface |
| // Ipv6IfIndex == 0 IPv6 not available on this interface |
| if (((ptr->IfIndex != 0)&&(ptr->IfIndex == index)) || |
| ((ptr->Ipv6IfIndex !=0) && (ptr->Ipv6IfIndex == index))) { |
| ret = (IP_ADAPTER_ADDRESSES *) malloc(sizeof(IP_ADAPTER_ADDRESSES)); |
| if (ret == NULL) { |
| free(adapterInfo); |
| JNU_ThrowByName(env, "java/lang/OutOfMemoryError", |
| "Native heap allocation failure"); |
| return NULL; |
| } |
| |
| //copy the memory and break out of the while loop. |
| memcpy(ret, ptr, sizeof(IP_ADAPTER_ADDRESSES)); |
| break; |
| |
| } |
| ptr=ptr->Next; |
| } |
| free(adapterInfo); |
| return ret; |
| } |
| |
| static int ipinflen = 2048; |
| |
| /* |
| */ |
| int getAllInterfacesAndAddresses (JNIEnv *env, netif **netifPP) |
| { |
| DWORD ret; |
| IP_ADAPTER_ADDRESSES *ptr, *adapters=NULL; |
| ULONG len=ipinflen, count=0; |
| netif *nif=NULL, *dup_nif, *last=NULL, *loopif=NULL, *curr; |
| int tun=0, net=0; |
| |
| *netifPP = NULL; |
| /* |
| * Get the IPv4 interfaces. This information is the same |
| * as what previous JDK versions would return. |
| */ |
| |
| ret = enumInterfaces(env, netifPP); |
| if (ret == -1) { |
| return -1; |
| } else { |
| count = ret; |
| } |
| |
| /* locate the loopback (and the last) interface */ |
| for (nif=*netifPP, last=nif; nif!=NULL; nif=nif->next) { |
| if (nif->ifType == MIB_IF_TYPE_LOOPBACK) { |
| loopif = nif; |
| } |
| last = nif; |
| } |
| |
| // Retrieve IPv4 addresses with the IP Helper API |
| curr = *netifPP; |
| while (curr != NULL) { |
| netaddr *netaddrP; |
| ret = enumAddresses_win(env, curr, &netaddrP); |
| if (ret == -1) { |
| return -1; |
| } |
| curr->addrs = netaddrP; |
| curr->naddrs += ret; |
| curr = curr->next; |
| } |
| |
| ret = getAdapters (env, &adapters); |
| if (ret != ERROR_SUCCESS) { |
| goto err; |
| } |
| |
| /* Now get the IPv6 information. This includes: |
| * (a) IPv6 information associated with interfaces already found |
| * (b) IPv6 information for IPv6 only interfaces (probably tunnels) |
| * |
| * For compatibility with previous releases we use the naming |
| * information gotten from enumInterfaces() for (a) entries |
| * However, the index numbers are taken from the new API. |
| * |
| * The procedure is to go through the list of adapters returned |
| * by the new API looking for entries that correspond to IPv4 interfaces |
| * already found. |
| */ |
| |
| ptr = adapters; |
| while (ptr != NULL) { |
| int c; |
| netif *nif0; |
| if (ptr->IfType == IF_TYPE_SOFTWARE_LOOPBACK && (loopif != NULL)) { |
| c = getAddrsFromAdapter(ptr, &loopif->addrs); |
| if (c == -1) { |
| goto err; |
| } |
| loopif->naddrs += c; |
| } else { |
| int index = ptr->IfIndex; |
| if (index != 0) { |
| /* This entry is associated with an IPv4 interface */ |
| for (nif=*netifPP; nif!=NULL; nif=nif->next) { |
| if (nif->index == index) { |
| /* found the interface entry |
| * set the index to the IPv6 index and add the |
| * IPv6 addresses |
| */ |
| nif->ipv6Index = ptr->Ipv6IfIndex; |
| c = getAddrsFromAdapter(ptr, &nif->addrs); |
| nif->naddrs += c; |
| break; |
| } |
| } |
| } else { |
| /* This entry is IPv6 only */ |
| char newname [128]; |
| int c; |
| |
| /* Windows allocates duplicate adapter entries |
| * for tunnel interfaces when there are multiple |
| * physical adapters. Need to check |
| * if this is a duplicate (ipv6Index is the same) |
| */ |
| dup_nif = 0; |
| for (nif0=*netifPP; nif0!=NULL; nif0=nif0->next) { |
| if (nif0->hasIpv6Address && |
| ptr->Ipv6IfIndex == nif0->ipv6Index) { |
| dup_nif = nif0; |
| break; |
| } |
| } |
| if (dup_nif == 0) { |
| /* new interface */ |
| nif = (netif *) calloc (1, sizeof(netif)); |
| if (nif == 0) { |
| goto err; |
| } |
| if (ptr->IfType == IF_TYPE_TUNNEL) { |
| sprintf (newname, "tun%d", tun); |
| tun ++; |
| } else { |
| sprintf (newname, "net%d", net); |
| net ++; |
| } |
| nif->name = malloc (strlen(newname)+1); |
| nif->displayName = malloc (wcslen(ptr->FriendlyName)*2+2); |
| if (nif->name == 0 || nif->displayName == 0) { |
| goto err; |
| } |
| strcpy (nif->name, newname); |
| wcscpy ((PWCHAR)nif->displayName, ptr->FriendlyName); |
| nif->dNameIsUnicode = TRUE; |
| |
| // the java.net.NetworkInterface abstraction only has index |
| // so the Ipv6IfIndex needs to map onto index |
| nif->index = ptr->Ipv6IfIndex; |
| nif->ipv6Index = ptr->Ipv6IfIndex; |
| nif->hasIpv6Address = TRUE; |
| |
| last->next = nif; |
| last = nif; |
| count++; |
| c = getAddrsFromAdapter(ptr, &nif->addrs); |
| if (c == -1) { |
| goto err; |
| } |
| nif->naddrs += c; |
| } else { |
| /* add the addresses from this adapter to the |
| * original (dup_nif) |
| */ |
| c = getAddrsFromAdapter(ptr, &dup_nif->addrs); |
| if (c == -1) { |
| goto err; |
| } |
| dup_nif->naddrs += c; |
| } |
| } |
| } |
| ptr=ptr->Next; |
| } |
| |
| free (adapters); |
| return count; |
| |
| err: |
| if (*netifPP) { |
| free_netif (*netifPP); |
| } |
| if (adapters) { |
| free (adapters); |
| } |
| return -1; |
| } |
| |
| /* If *netaddrPP is null, then the addresses are allocated and the beginning |
| * of the allocated chain is returned in *netaddrPP. |
| * If *netaddrPP is not null, then the addresses allocated here are appended |
| * to the existing chain. |
| * |
| * Returns count of addresses or -1 on error. |
| */ |
| |
| static int getAddrsFromAdapter(IP_ADAPTER_ADDRESSES *ptr, netaddr **netaddrPP) { |
| LPSOCKADDR sock; |
| int count = 0; |
| netaddr *curr, *start = NULL, *prev = NULL; |
| PIP_ADAPTER_UNICAST_ADDRESS uni_addr; |
| PIP_ADAPTER_ANYCAST_ADDRESS any_addr; |
| PIP_ADAPTER_PREFIX prefix; |
| |
| /* If chain passed in, find end */ |
| if (*netaddrPP != NULL) { |
| for (start=*netaddrPP; start->next!=NULL; start=start->next) |
| ; |
| |
| prev=start; |
| } |
| |
| prefix = ptr->FirstPrefix; |
| /* Unicast */ |
| uni_addr = ptr->FirstUnicastAddress; |
| while (uni_addr != NULL) { |
| /* address is only usable if dad state is preferred or deprecated */ |
| if (uni_addr->DadState == IpDadStateDeprecated || |
| uni_addr->DadState == IpDadStatePreferred) { |
| sock = uni_addr->Address.lpSockaddr; |
| |
| // IPv4 addresses already retrieved with enumAddresses_win |
| if (sock->sa_family == AF_INET) { |
| uni_addr = uni_addr->Next; |
| continue; |
| } |
| |
| curr = (netaddr *)calloc (1, sizeof (netaddr)); |
| |
| if (curr == NULL) |
| goto freeAllocatedMemory; |
| |
| if (start == NULL) |
| start = curr; |
| |
| if (prev != NULL) |
| prev->next = curr; |
| |
| prev = curr; |
| SOCKETADDRESS_COPY (&curr->addr, sock); |
| if (prefix != NULL) { |
| curr->mask = (short)prefix->PrefixLength; |
| prefix = prefix->Next; |
| } |
| count ++; |
| } |
| uni_addr = uni_addr->Next; |
| } |
| /* Anycast */ |
| any_addr = ptr->FirstAnycastAddress; |
| while (any_addr != NULL) { |
| curr = (netaddr *)calloc (1, sizeof (netaddr)); |
| |
| if (curr == NULL) |
| goto freeAllocatedMemory; |
| |
| if (start == NULL) |
| start = curr; |
| |
| if (prev != NULL) |
| prev->next = curr; |
| |
| prev = curr; |
| sock = any_addr->Address.lpSockaddr; |
| SOCKETADDRESS_COPY (&curr->addr, sock); |
| count ++; |
| any_addr = any_addr->Next; |
| } |
| if (*netaddrPP == NULL) { |
| *netaddrPP = start; |
| } |
| return count; |
| |
| freeAllocatedMemory: |
| |
| if (*netaddrPP != NULL) { |
| //N.B. the variable "start" cannot be NULL at this point because we started with an |
| //existing list. |
| curr=start->next; |
| start->next = NULL; |
| start = curr; |
| } |
| // otherwise, "start" points to the beginning of an incomplete list that we must deallocate. |
| |
| while (start != NULL) { |
| curr = start->next; |
| free(start); |
| start = curr; |
| } |
| |
| return -1; |
| } |
| |
| /* |
| * Create a NetworkInterface object, populate the name and index, and |
| * populate the InetAddress array based on the IP addresses for this |
| * interface. |
| */ |
| static jobject createNetworkInterfaceXP(JNIEnv *env, netif *ifs) |
| { |
| jobject netifObj; |
| jobject name, displayName; |
| jobjectArray addrArr, bindsArr, childArr; |
| netaddr *addrs; |
| jint addr_index; |
| int netaddrCount=ifs->naddrs; |
| netaddr *netaddrP=ifs->addrs; |
| jint bind_index; |
| |
| /* |
| * Create a NetworkInterface object and populate it |
| */ |
| netifObj = (*env)->NewObject(env, ni_class, ni_ctor); |
| if (netifObj == NULL) { |
| return NULL; |
| } |
| name = (*env)->NewStringUTF(env, ifs->name); |
| if (name == NULL) { |
| return NULL; |
| } |
| if (ifs->dNameIsUnicode) { |
| displayName = (*env)->NewString(env, (PWCHAR)ifs->displayName, |
| (jsize)wcslen ((PWCHAR)ifs->displayName)); |
| } else { |
| displayName = (*env)->NewStringUTF(env, ifs->displayName); |
| } |
| if (displayName == NULL) { |
| return NULL; |
| } |
| (*env)->SetObjectField(env, netifObj, ni_nameID, name); |
| (*env)->SetObjectField(env, netifObj, ni_displayNameID, displayName); |
| (*env)->SetIntField(env, netifObj, ni_indexID, ifs->index); |
| /* |
| * Get the IP addresses for this interface if necessary |
| * Note that 0 is a valid number of addresses. |
| */ |
| if (netaddrCount < 0) { |
| netaddrCount = enumAddresses_win(env, ifs, &netaddrP); |
| if (netaddrCount == -1) { |
| return NULL; |
| } |
| } |
| |
| addrArr = (*env)->NewObjectArray(env, netaddrCount, ia_class, NULL); |
| if (addrArr == NULL) { |
| return NULL; |
| } |
| |
| bindsArr = (*env)->NewObjectArray(env, netaddrCount, ni_ibcls, NULL); |
| if (bindsArr == NULL) { |
| free_netaddr(netaddrP); |
| return NULL; |
| } |
| |
| addrs = netaddrP; |
| addr_index = 0; |
| bind_index = 0; |
| while (addrs != NULL) { |
| jobject iaObj, ia2Obj; |
| jobject ibObj = NULL; |
| if (addrs->addr.sa.sa_family == AF_INET) { |
| iaObj = (*env)->NewObject(env, ia4_class, ia4_ctrID); |
| if (iaObj == NULL) { |
| return NULL; |
| } |
| /* default ctor will set family to AF_INET */ |
| |
| setInetAddress_addr(env, iaObj, ntohl(addrs->addr.sa4.sin_addr.s_addr)); |
| |
| ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID); |
| if (ibObj == NULL) { |
| free_netaddr(netaddrP); |
| return NULL; |
| } |
| (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj); |
| ia2Obj = (*env)->NewObject(env, ia4_class, ia4_ctrID); |
| if (ia2Obj == NULL) { |
| free_netaddr(netaddrP); |
| return NULL; |
| } |
| setInetAddress_addr(env, ia2Obj, ntohl(addrs->brdcast.sa4.sin_addr.s_addr)); |
| (*env)->SetObjectField(env, ibObj, ni_ibbroadcastID, ia2Obj); |
| (*env)->SetShortField(env, ibObj, ni_ibmaskID, addrs->mask); |
| (*env)->SetObjectArrayElement(env, bindsArr, bind_index++, ibObj); |
| } else /* AF_INET6 */ { |
| int scope; |
| jboolean ret; |
| iaObj = (*env)->NewObject(env, ia6_class, ia6_ctrID); |
| if (iaObj == NULL) { |
| return NULL; |
| } |
| ret = setInet6Address_ipaddress(env, iaObj, (jbyte *)&(addrs->addr.sa6.sin6_addr.s6_addr)); |
| if (ret == JNI_FALSE) { |
| return NULL; |
| } |
| scope = addrs->addr.sa6.sin6_scope_id; |
| if (scope != 0) { /* zero is default value, no need to set */ |
| setInet6Address_scopeid(env, iaObj, scope); |
| setInet6Address_scopeifname(env, iaObj, netifObj); |
| } |
| ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID); |
| if (ibObj == NULL) { |
| free_netaddr(netaddrP); |
| return NULL; |
| } |
| (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj); |
| (*env)->SetShortField(env, ibObj, ni_ibmaskID, addrs->mask); |
| (*env)->SetObjectArrayElement(env, bindsArr, bind_index++, ibObj); |
| } |
| (*env)->SetObjectArrayElement(env, addrArr, addr_index, iaObj); |
| addrs = addrs->next; |
| addr_index++; |
| } |
| (*env)->SetObjectField(env, netifObj, ni_addrsID, addrArr); |
| (*env)->SetObjectField(env, netifObj, ni_bindsID, bindsArr); |
| |
| /* |
| * Windows doesn't have virtual interfaces, so child array |
| * is always empty. |
| */ |
| childArr = (*env)->NewObjectArray(env, 0, ni_class, NULL); |
| if (childArr == NULL) { |
| return NULL; |
| } |
| (*env)->SetObjectField(env, netifObj, ni_childsID, childArr); |
| |
| /* return the NetworkInterface */ |
| return netifObj; |
| } |
| |
| JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0_XP |
| (JNIEnv *env, jclass cls, jstring name) |
| { |
| netif *ifList, *curr; |
| jboolean isCopy; |
| const char *name_utf; |
| jobject netifObj = NULL; |
| |
| if (getAllInterfacesAndAddresses (env, &ifList) < 0) { |
| return NULL; |
| } |
| |
| /* get the name as a C string */ |
| name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); |
| |
| /* Search by name */ |
| curr = ifList; |
| while (curr != NULL) { |
| if (strcmp(name_utf, curr->name) == 0) { |
| break; |
| } |
| curr = curr->next; |
| } |
| |
| /* if found create a NetworkInterface */ |
| if (curr != NULL) {; |
| netifObj = createNetworkInterfaceXP(env, curr); |
| } |
| |
| /* release the UTF string */ |
| (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| |
| /* release the interface list */ |
| free_netif(ifList); |
| |
| return netifObj; |
| } |
| |
| /* |
| * Class: NetworkInterface |
| * Method: getByIndex0_XP |
| * Signature: (I)LNetworkInterface; |
| */ |
| JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByIndex0_XP |
| (JNIEnv *env, jclass cls, jint index) |
| { |
| netif *ifList, *curr; |
| jobject netifObj = NULL; |
| |
| if (getAllInterfacesAndAddresses (env, &ifList) < 0) { |
| return NULL; |
| } |
| |
| /* search by index */ |
| curr = ifList; |
| while (curr != NULL) { |
| if (index == curr->index) { |
| break; |
| } |
| curr = curr->next; |
| } |
| |
| /* if found create a NetworkInterface */ |
| if (curr != NULL) { |
| netifObj = createNetworkInterfaceXP(env, curr); |
| } |
| |
| /* 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_XP |
| (JNIEnv *env, jclass cls, jobject iaObj) |
| { |
| netif *ifList, *curr; |
| jobject netifObj = NULL; |
| |
| /* get the list of interfaces */ |
| if (getAllInterfacesAndAddresses (env, &ifList) < 0) { |
| return NULL; |
| } |
| |
| /* |
| * Enumerate the addresses on each interface until we find a |
| * matching address. |
| */ |
| curr = ifList; |
| while (curr != NULL) { |
| netaddr *addrList = curr->addrs; |
| netaddr *addrP; |
| |
| /* iterate through each address */ |
| addrP = addrList; |
| |
| while (addrP != NULL) { |
| if (NET_SockaddrEqualsInetAddress(env, |
| (struct sockaddr*)&addrP->addr, iaObj)) { |
| break; |
| } |
| addrP = addrP->next; |
| } |
| |
| /* |
| * Address matched so create NetworkInterface for this interface |
| * and address list. |
| */ |
| if (addrP != NULL) { |
| netifObj = createNetworkInterfaceXP(env, curr); |
| break; |
| } |
| |
| /* on next interface */ |
| curr = curr->next; |
| } |
| |
| /* release the interface list */ |
| free_netif(ifList); |
| |
| return netifObj; |
| } |
| |
| /* |
| * Class: java_net_NetworkInterface |
| * Method: getAll |
| * Signature: ()[Ljava/net/NetworkInterface; |
| */ |
| JNIEXPORT jobjectArray JNICALL Java_java_net_NetworkInterface_getAll_XP |
| (JNIEnv *env, jclass cls) |
| { |
| int count; |
| netif *ifList, *curr; |
| jobjectArray netIFArr; |
| jint arr_index; |
| |
| /* |
| * Get list of interfaces |
| */ |
| count = getAllInterfacesAndAddresses (env, &ifList); |
| if (count < 0) { |
| return NULL; |
| } |
| |
| /* allocate a NetworkInterface array */ |
| netIFArr = (*env)->NewObjectArray(env, count, cls, NULL); |
| if (netIFArr == NULL) { |
| return NULL; |
| } |
| |
| /* |
| * Iterate through the interfaces, create a NetworkInterface instance |
| * for each array element and populate the object. |
| */ |
| curr = ifList; |
| arr_index = 0; |
| while (curr != NULL) { |
| jobject netifObj; |
| |
| netifObj = createNetworkInterfaceXP(env, curr); |
| if (netifObj == NULL) { |
| return NULL; |
| } |
| |
| /* put the NetworkInterface into the array */ |
| (*env)->SetObjectArrayElement(env, netIFArr, arr_index++, netifObj); |
| curr = curr->next; |
| } |
| |
| /* release the interface list */ |
| free_netif(ifList); |
| |
| return netIFArr; |
| } |
| |
| /* |
| * Class: java_net_NetworkInterface |
| * Method: supportsMulticast0 |
| * Signature: (Ljava/lang/String;I)Z |
| */ |
| JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_supportsMulticast0_XP |
| (JNIEnv *env, jclass cls, jstring name, jint index) { |
| IP_ADAPTER_ADDRESSES *ptr; |
| jboolean val = JNI_TRUE; |
| |
| ptr = getAdapter(env, index); |
| if (ptr != NULL) { |
| val = ptr->Flags & IP_ADAPTER_NO_MULTICAST ? JNI_FALSE : JNI_TRUE; |
| free(ptr); |
| } |
| return val; |
| } |
| |
| /* |
| * Class: java_net_NetworkInterface |
| * Method: isUp0 |
| * Signature: (Ljava/lang/String;I)Z |
| */ |
| JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isUp0_XP |
| (JNIEnv *env, jclass cls, jstring name, jint index) { |
| IP_ADAPTER_ADDRESSES *ptr; |
| jboolean val = JNI_FALSE; |
| |
| ptr = getAdapter(env, index); |
| if (ptr != NULL) { |
| val = ptr->OperStatus == IfOperStatusUp ? JNI_TRUE : JNI_FALSE; |
| free(ptr); |
| } |
| return val; |
| } |
| |
| /* |
| * Class: java_net_NetworkInterface |
| * Method: getMacAddr0 |
| * Signature: (Ljava/lang/String;I)Z |
| */ |
| JNIEXPORT jbyteArray JNICALL Java_java_net_NetworkInterface_getMacAddr0_XP |
| (JNIEnv *env, jclass cls, jstring name, jint index) { |
| IP_ADAPTER_ADDRESSES *ptr; |
| jbyteArray ret = NULL; |
| int len; |
| |
| ptr = getAdapter(env, index); |
| if (ptr != NULL) { |
| len = ptr->PhysicalAddressLength; |
| if (len > 0) { |
| ret = (*env)->NewByteArray(env, len); |
| if (!IS_NULL(ret)) { |
| (*env)->SetByteArrayRegion(env, ret, 0, len, |
| (jbyte*) ptr->PhysicalAddress); |
| } |
| } |
| free(ptr); |
| } |
| return ret; |
| } |
| |
| /* |
| * Class: java_net_NetworkInterface |
| * Method: getMTU0 |
| * Signature: ([bLjava/lang/String;I)I |
| */ |
| JNIEXPORT jint JNICALL Java_java_net_NetworkInterface_getMTU0_XP |
| (JNIEnv *env, jclass cls, jstring name, jint index) { |
| IP_ADAPTER_ADDRESSES *ptr; |
| jint ret = -1; |
| |
| ptr = getAdapter(env, index); |
| if (ptr != NULL) { |
| ret = ptr->Mtu; |
| free(ptr); |
| } |
| return ret; |
| } |
| |
| /* |
| * Class: java_net_NetworkInterface |
| * Method: isLoopback0 |
| * Signature: (Ljava/lang/String;I)Z |
| */ |
| JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isLoopback0_XP |
| (JNIEnv *env, jclass cls, jstring name, jint index) { |
| IP_ADAPTER_ADDRESSES *ptr; |
| jboolean val = JNI_FALSE; |
| |
| ptr = getAdapter(env, index); |
| if (ptr != NULL) { |
| val = ptr->IfType == IF_TYPE_SOFTWARE_LOOPBACK ? JNI_TRUE : JNI_FALSE; |
| free(ptr); |
| } |
| return val; |
| } |
| |
| /* |
| * Class: java_net_NetworkInterface |
| * Method: isP2P0 |
| * Signature: (Ljava/lang/String;I)Z |
| */ |
| JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isP2P0_XP |
| (JNIEnv *env, jclass cls, jstring name, jint index) { |
| IP_ADAPTER_ADDRESSES *ptr; |
| jboolean val = JNI_FALSE; |
| |
| ptr = getAdapter(env, index); |
| if (ptr != NULL) { |
| if (ptr->IfType == IF_TYPE_PPP || ptr->IfType == IF_TYPE_SLIP || |
| ptr->IfType == IF_TYPE_TUNNEL) { |
| val = JNI_TRUE; |
| } |
| free(ptr); |
| } |
| return val; |
| } |