| /* |
| * Copyright (c) 2000, 2013, 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 <windows.h> |
| #include <winsock2.h> |
| #include <ctype.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <malloc.h> |
| #include <sys/types.h> |
| #include <process.h> |
| #include <iphlpapi.h> |
| #include <icmpapi.h> |
| |
| #include "java_net_InetAddress.h" |
| #include "java_net_Inet4AddressImpl.h" |
| #include "java_net_Inet6AddressImpl.h" |
| #include "net_util.h" |
| #include "icmp.h" |
| |
| #ifdef WIN32 |
| #ifndef _WIN64 |
| |
| /* Retain this code a little longer to support building in |
| * old environments. _MSC_VER is defined as: |
| * 1200 for MSVC++ 6.0 |
| * 1310 for Vc7 |
| */ |
| #if defined(_MSC_VER) && _MSC_VER < 1310 |
| #define sockaddr_in6 SOCKADDR_IN6 |
| #endif |
| #endif |
| #define uint32_t UINT32 |
| #endif |
| |
| /* |
| * Inet6AddressImpl |
| */ |
| |
| /* |
| * Class: java_net_Inet6AddressImpl |
| * Method: getLocalHostName |
| * Signature: ()Ljava/lang/String; |
| */ |
| JNIEXPORT jstring JNICALL |
| Java_java_net_Inet6AddressImpl_getLocalHostName (JNIEnv *env, jobject this) { |
| char hostname [256]; |
| |
| if (gethostname (hostname, sizeof (hostname)) == -1) { |
| strcpy (hostname, "localhost"); |
| } |
| return JNU_NewStringPlatform (env, hostname); |
| } |
| |
| JNIEXPORT jobjectArray JNICALL |
| Java_java_net_Inet6AddressImpl_lookupAllHostAddr(JNIEnv *env, jobject this, |
| jstring host) { |
| const char *hostname; |
| jobjectArray ret = 0; |
| int retLen = 0; |
| jboolean preferIPv6Address; |
| |
| int error=0; |
| struct addrinfo hints, *res, *resNew = NULL; |
| |
| initInetAddressIDs(env); |
| JNU_CHECK_EXCEPTION_RETURN(env, NULL); |
| |
| if (IS_NULL(host)) { |
| JNU_ThrowNullPointerException(env, "host is null"); |
| return 0; |
| } |
| hostname = JNU_GetStringPlatformChars(env, host, JNI_FALSE); |
| CHECK_NULL_RETURN(hostname, NULL); |
| |
| /* get the address preference */ |
| preferIPv6Address |
| = (*env)->GetStaticBooleanField(env, ia_class, ia_preferIPv6AddressID); |
| |
| /* Try once, with our static buffer. */ |
| memset(&hints, 0, sizeof(hints)); |
| hints.ai_flags = AI_CANONNAME; |
| hints.ai_family = AF_UNSPEC; |
| |
| error = getaddrinfo(hostname, NULL, &hints, &res); |
| |
| if (error) { |
| if (WSAGetLastError() == WSATRY_AGAIN) { |
| NET_ThrowByNameWithLastError(env, |
| JNU_JAVANETPKG "UnknownHostException", |
| hostname); |
| JNU_ReleaseStringPlatformChars(env, host, hostname); |
| return NULL; |
| } else { |
| /* report error */ |
| JNU_ThrowByName(env, JNU_JAVANETPKG "UnknownHostException", |
| (char *)hostname); |
| JNU_ReleaseStringPlatformChars(env, host, hostname); |
| return NULL; |
| } |
| } else { |
| int i = 0; |
| int inetCount = 0, inet6Count = 0, inetIndex, inet6Index; |
| struct addrinfo *itr, *last, *iterator = res; |
| while (iterator != NULL) { |
| int skip = 0; |
| itr = resNew; |
| while (itr != NULL) { |
| if (iterator->ai_family == itr->ai_family && |
| iterator->ai_addrlen == itr->ai_addrlen) { |
| if (itr->ai_family == AF_INET) { /* AF_INET */ |
| struct sockaddr_in *addr1, *addr2; |
| addr1 = (struct sockaddr_in *)iterator->ai_addr; |
| addr2 = (struct sockaddr_in *)itr->ai_addr; |
| if (addr1->sin_addr.s_addr == |
| addr2->sin_addr.s_addr) { |
| skip = 1; |
| break; |
| } |
| } else { |
| int t; |
| struct sockaddr_in6 *addr1, *addr2; |
| addr1 = (struct sockaddr_in6 *)iterator->ai_addr; |
| addr2 = (struct sockaddr_in6 *)itr->ai_addr; |
| |
| for (t = 0; t < 16; t++) { |
| if (addr1->sin6_addr.s6_addr[t] != |
| addr2->sin6_addr.s6_addr[t]) { |
| break; |
| } |
| } |
| if (t < 16) { |
| itr = itr->ai_next; |
| continue; |
| } else { |
| skip = 1; |
| break; |
| } |
| } |
| } else if (iterator->ai_family != AF_INET && |
| iterator->ai_family != AF_INET6) { |
| /* we can't handle other family types */ |
| skip = 1; |
| break; |
| } |
| itr = itr->ai_next; |
| } |
| |
| if (!skip) { |
| struct addrinfo *next |
| = (struct addrinfo*) malloc(sizeof(struct addrinfo)); |
| if (!next) { |
| JNU_ThrowOutOfMemoryError(env, "Native heap allocation failed"); |
| ret = NULL; |
| goto cleanupAndReturn; |
| } |
| memcpy(next, iterator, sizeof(struct addrinfo)); |
| next->ai_next = NULL; |
| if (resNew == NULL) { |
| resNew = next; |
| } else { |
| last->ai_next = next; |
| } |
| last = next; |
| i++; |
| if (iterator->ai_family == AF_INET) { |
| inetCount ++; |
| } else if (iterator->ai_family == AF_INET6) { |
| inet6Count ++; |
| } |
| } |
| iterator = iterator->ai_next; |
| } |
| retLen = i; |
| iterator = resNew; |
| i = 0; |
| ret = (*env)->NewObjectArray(env, retLen, ia_class, NULL); |
| |
| if (IS_NULL(ret)) { |
| /* we may have memory to free at the end of this */ |
| goto cleanupAndReturn; |
| } |
| |
| if (preferIPv6Address) { |
| inetIndex = inet6Count; |
| inet6Index = 0; |
| } else { |
| inetIndex = 0; |
| inet6Index = inetCount; |
| } |
| |
| while (iterator != NULL) { |
| if (iterator->ai_family == AF_INET) { |
| jobject iaObj = (*env)->NewObject(env, ia4_class, ia4_ctrID); |
| if (IS_NULL(iaObj)) { |
| ret = NULL; |
| goto cleanupAndReturn; |
| } |
| setInetAddress_addr(env, iaObj, ntohl(((struct sockaddr_in*)iterator->ai_addr)->sin_addr.s_addr)); |
| setInetAddress_hostName(env, iaObj, host); |
| (*env)->SetObjectArrayElement(env, ret, inetIndex, iaObj); |
| inetIndex ++; |
| } else if (iterator->ai_family == AF_INET6) { |
| jint scope = 0, ret1; |
| jobject iaObj = (*env)->NewObject(env, ia6_class, ia6_ctrID); |
| if (IS_NULL(iaObj)) { |
| ret = NULL; |
| goto cleanupAndReturn; |
| } |
| ret1 = setInet6Address_ipaddress(env, iaObj, (jbyte *)&(((struct sockaddr_in6*)iterator->ai_addr)->sin6_addr)); |
| |
| if (ret1 == JNI_FALSE) { |
| ret = NULL; |
| goto cleanupAndReturn; |
| } |
| scope = ((struct sockaddr_in6*)iterator->ai_addr)->sin6_scope_id; |
| if (scope != 0) { /* zero is default value, no need to set */ |
| setInet6Address_scopeid(env, iaObj, scope); |
| } |
| setInetAddress_hostName(env, iaObj, host); |
| (*env)->SetObjectArrayElement(env, ret, inet6Index, iaObj); |
| inet6Index ++; |
| } |
| iterator = iterator->ai_next; |
| } |
| } |
| |
| cleanupAndReturn: |
| { |
| struct addrinfo *iterator, *tmp; |
| iterator = resNew; |
| while (iterator != NULL) { |
| tmp = iterator; |
| iterator = iterator->ai_next; |
| free(tmp); |
| } |
| JNU_ReleaseStringPlatformChars(env, host, hostname); |
| } |
| |
| freeaddrinfo(res); |
| |
| return ret; |
| } |
| |
| /* |
| * Class: java_net_Inet6AddressImpl |
| * Method: getHostByAddr |
| * Signature: (I)Ljava/lang/String; |
| */ |
| JNIEXPORT jstring JNICALL |
| Java_java_net_Inet6AddressImpl_getHostByAddr(JNIEnv *env, jobject this, |
| jbyteArray addrArray) { |
| jstring ret = NULL; |
| |
| char host[NI_MAXHOST+1]; |
| int error = 0; |
| int len = 0; |
| jbyte caddr[16]; |
| |
| struct sockaddr_in him4; |
| struct sockaddr_in6 him6; |
| struct sockaddr *sa; |
| |
| /* |
| * For IPv4 addresses construct a sockaddr_in structure. |
| */ |
| if ((*env)->GetArrayLength(env, addrArray) == 4) { |
| jint addr; |
| (*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); |
| memset((char *) &him4, 0, sizeof(him4)); |
| him4.sin_addr.s_addr = (uint32_t) htonl(addr); |
| him4.sin_family = AF_INET; |
| sa = (struct sockaddr *) &him4; |
| len = sizeof(him4); |
| } else { |
| /* |
| * For IPv6 address construct a sockaddr_in6 structure. |
| */ |
| (*env)->GetByteArrayRegion(env, addrArray, 0, 16, caddr); |
| memset((char *) &him6, 0, sizeof(him6)); |
| memcpy((void *)&(him6.sin6_addr), caddr, sizeof(struct in6_addr) ); |
| him6.sin6_family = AF_INET6; |
| sa = (struct sockaddr *) &him6 ; |
| len = sizeof(him6) ; |
| } |
| |
| error = getnameinfo(sa, len, host, NI_MAXHOST, NULL, 0, NI_NAMEREQD); |
| |
| if (!error) { |
| ret = (*env)->NewStringUTF(env, host); |
| CHECK_NULL_RETURN(ret, NULL); |
| } |
| |
| if (ret == NULL) { |
| JNU_ThrowByName(env, JNU_JAVANETPKG "UnknownHostException", NULL); |
| } |
| |
| return ret; |
| } |
| |
| #ifdef AF_INET6 |
| |
| /** |
| * ping implementation using tcp port 7 (echo) |
| */ |
| static jboolean |
| tcp_ping6(JNIEnv *env, |
| jint timeout, |
| jint ttl, |
| struct sockaddr_in6 him6, |
| struct sockaddr_in6* netif, |
| int len) |
| { |
| jint fd; |
| WSAEVENT hEvent; |
| int connect_rv = -1; |
| |
| fd = NET_Socket(AF_INET6, SOCK_STREAM, 0); |
| if (fd == SOCKET_ERROR) { |
| /* note: if you run out of fds, you may not be able to load |
| * the exception class, and get a NoClassDefFoundError |
| * instead. |
| */ |
| NET_ThrowNew(env, errno, "Can't create socket"); |
| return JNI_FALSE; |
| } |
| |
| /** |
| * A TTL was specified, let's set the socket option. |
| */ |
| if (ttl > 0) { |
| setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, (const char *)&ttl, sizeof(ttl)); |
| } |
| |
| /** |
| * A network interface was specified, let's bind to it. |
| */ |
| if (netif != NULL) { |
| if (NET_Bind(fd, (struct sockaddr*)netif, sizeof(struct sockaddr_in6)) < 0) { |
| NET_ThrowNew(env, WSAGetLastError(), "Can't bind socket to interface"); |
| closesocket(fd); |
| return JNI_FALSE; |
| } |
| } |
| |
| /** |
| * Make the socket non blocking. |
| */ |
| hEvent = WSACreateEvent(); |
| WSAEventSelect(fd, hEvent, FD_READ|FD_CONNECT|FD_CLOSE); |
| |
| /* no need to use NET_Connect as non-blocking */ |
| him6.sin6_port = htons((short) 7); /* Echo port */ |
| connect_rv = connect(fd, (struct sockaddr *)&him6, len); |
| |
| /** |
| * connection established or refused immediately, either way it means |
| * we were able to reach the host! |
| */ |
| if (connect_rv == 0 || WSAGetLastError() == WSAECONNREFUSED) { |
| WSACloseEvent(hEvent); |
| closesocket(fd); |
| return JNI_TRUE; |
| } else { |
| int optlen; |
| |
| switch (WSAGetLastError()) { |
| case WSAEHOSTUNREACH: /* Host Unreachable */ |
| case WSAENETUNREACH: /* Network Unreachable */ |
| case WSAENETDOWN: /* Network is down */ |
| case WSAEPFNOSUPPORT: /* Protocol Family unsupported */ |
| WSACloseEvent(hEvent); |
| closesocket(fd); |
| return JNI_FALSE; |
| } |
| |
| if (WSAGetLastError() != WSAEWOULDBLOCK) { |
| NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "ConnectException", |
| "connect failed"); |
| WSACloseEvent(hEvent); |
| closesocket(fd); |
| return JNI_FALSE; |
| } |
| |
| timeout = NET_Wait(env, fd, NET_WAIT_CONNECT, timeout); |
| |
| if (timeout >= 0) { |
| /* has connection been established? */ |
| optlen = sizeof(connect_rv); |
| if (getsockopt(fd, SOL_SOCKET, SO_ERROR, (void*)&connect_rv, |
| &optlen) <0) { |
| connect_rv = WSAGetLastError(); |
| } |
| |
| if (connect_rv == 0 || connect_rv == WSAECONNREFUSED) { |
| WSACloseEvent(hEvent); |
| closesocket(fd); |
| return JNI_TRUE; |
| } |
| } |
| } |
| WSACloseEvent(hEvent); |
| closesocket(fd); |
| return JNI_FALSE; |
| } |
| |
| /** |
| * ping implementation. |
| * Send a ICMP_ECHO_REQUEST packet every second until either the timeout |
| * expires or a answer is received. |
| * Returns true is an ECHO_REPLY is received, otherwise, false. |
| */ |
| static jboolean |
| ping6(JNIEnv *env, |
| struct sockaddr_in6* src, |
| struct sockaddr_in6* dest, |
| jint timeout, |
| HANDLE hIcmpFile) |
| { |
| DWORD dwRetVal = 0; |
| char SendData[32] = {0}; |
| LPVOID ReplyBuffer = NULL; |
| DWORD ReplySize = 0; |
| IP_OPTION_INFORMATION ipInfo = {255, 0, 0, 0, NULL}; |
| struct sockaddr_in6 sa6Source; |
| |
| ReplySize = sizeof(ICMPV6_ECHO_REPLY) + sizeof(SendData); |
| ReplyBuffer = (VOID*) malloc(ReplySize); |
| if (ReplyBuffer == NULL) { |
| IcmpCloseHandle(hIcmpFile); |
| NET_ThrowNew(env, WSAGetLastError(), "Unable to allocate memory"); |
| return JNI_FALSE; |
| } |
| |
| //define local source information |
| sa6Source.sin6_addr = in6addr_any; |
| sa6Source.sin6_family = AF_INET6; |
| sa6Source.sin6_flowinfo = 0; |
| sa6Source.sin6_port = 0; |
| |
| dwRetVal = Icmp6SendEcho2(hIcmpFile, // HANDLE IcmpHandle, |
| NULL, // HANDLE Event, |
| NULL, // PIO_APC_ROUTINE ApcRoutine, |
| NULL, // PVOID ApcContext, |
| &sa6Source, // struct sockaddr_in6 *SourceAddress, |
| dest, // struct sockaddr_in6 *DestinationAddress, |
| SendData, // LPVOID RequestData, |
| sizeof(SendData), // WORD RequestSize, |
| &ipInfo, // PIP_OPTION_INFORMATION RequestOptions, |
| ReplyBuffer, // LPVOID ReplyBuffer, |
| ReplySize, // DWORD ReplySize, |
| timeout); // DWORD Timeout |
| |
| free(ReplyBuffer); |
| IcmpCloseHandle(hIcmpFile); |
| |
| |
| if (dwRetVal != 0) { |
| return JNI_TRUE; |
| } else { |
| return JNI_FALSE; |
| } |
| } |
| #endif /* AF_INET6 */ |
| |
| /* |
| * Class: java_net_Inet6AddressImpl |
| * Method: isReachable0 |
| * Signature: ([bII[bI)Z |
| */ |
| JNIEXPORT jboolean JNICALL |
| Java_java_net_Inet6AddressImpl_isReachable0(JNIEnv *env, jobject this, |
| jbyteArray addrArray, |
| jint scope, |
| jint timeout, |
| jbyteArray ifArray, |
| jint ttl, jint if_scope) { |
| #ifdef AF_INET6 |
| jbyte caddr[16]; |
| jint sz; |
| struct sockaddr_in6 him6; |
| struct sockaddr_in6* netif = NULL; |
| struct sockaddr_in6 inf6; |
| int len = 0; |
| HANDLE hIcmpFile; |
| |
| /* |
| * If IPv6 is not enable, then we can't reach an IPv6 address, can we? |
| * Actually, we probably shouldn't even get here. |
| */ |
| if (!ipv6_available()) { |
| return JNI_FALSE; |
| } |
| /* |
| * If it's an IPv4 address, ICMP won't work with IPv4 mapped address, |
| * therefore, let's delegate to the Inet4Address method. |
| */ |
| sz = (*env)->GetArrayLength(env, addrArray); |
| if (sz == 4) { |
| return Java_java_net_Inet4AddressImpl_isReachable0(env, this, |
| addrArray, |
| timeout, |
| ifArray, ttl); |
| } |
| |
| memset((char *) caddr, 0, 16); |
| memset((char *) &him6, 0, sizeof(him6)); |
| (*env)->GetByteArrayRegion(env, addrArray, 0, 16, caddr); |
| memcpy((void *)&(him6.sin6_addr), caddr, sizeof(struct in6_addr) ); |
| him6.sin6_family = AF_INET6; |
| if (scope > 0) { |
| him6.sin6_scope_id = scope; |
| } |
| len = sizeof(struct sockaddr_in6); |
| |
| /** |
| * A network interface was specified, let's convert the address |
| */ |
| if (!(IS_NULL(ifArray))) { |
| memset((char *) caddr, 0, 16); |
| memset((char *) &inf6, 0, sizeof(inf6)); |
| (*env)->GetByteArrayRegion(env, ifArray, 0, 16, caddr); |
| memcpy((void *)&(inf6.sin6_addr), caddr, sizeof(struct in6_addr) ); |
| inf6.sin6_family = AF_INET6; |
| inf6.sin6_port = 0; |
| inf6.sin6_scope_id = if_scope; |
| netif = &inf6; |
| } |
| |
| hIcmpFile = Icmp6CreateFile(); |
| if (hIcmpFile == INVALID_HANDLE_VALUE) { |
| int err = WSAGetLastError(); |
| if (err == ERROR_ACCESS_DENIED) { |
| // fall back to TCP echo if access is denied to ICMP |
| return tcp_ping6(env, timeout, ttl, him6, netif, len); |
| } else { |
| NET_ThrowNew(env, err, "Unable to create ICMP file handle"); |
| return JNI_FALSE; |
| } |
| } else { |
| return ping6(env, netif, &him6, timeout, hIcmpFile); |
| } |
| |
| #endif /* AF_INET6 */ |
| return JNI_FALSE; |
| } |
