--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/windows/native/java/net/net_util_md.c Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,1011 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc. 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+#include "net_util.h"
+#include "jni.h"
+#include "typedefs.h"
+
+#ifndef IPTOS_TOS_MASK
+#define IPTOS_TOS_MASK 0x1e
+#endif
+#ifndef IPTOS_PREC_MASK
+#define IPTOS_PREC_MASK 0xe0
+#endif
+
+/* true if SO_RCVTIMEO is supported */
+jboolean isRcvTimeoutSupported = JNI_TRUE;
+
+LPFN_GETADDRINFO getaddrinfo_ptr = NULL;
+LPFN_FREEADDRINFO freaddrinfo_ptr = NULL;
+LPFN_GETNAMEINFO getnameinfo_ptr = NULL;
+
+/*
+ * Table of Windows Sockets errors, the specific exception we
+ * throw for the error, and the error text.
+ *
+ * Note that this table excludes OS dependent errors.
+ *
+ * Latest list of Windows Sockets errors can be found at :-
+ * http://msdn.microsoft.com/library/psdk/winsock/errors_3wc2.htm
+ */
+static struct {
+ int errCode;
+ const char *exc;
+ const char *errString;
+} const winsock_errors[] = {
+ { WSAEACCES, 0, "Permission denied" },
+ { WSAEADDRINUSE, "BindException", "Address already in use" },
+ { WSAEADDRNOTAVAIL, "BindException", "Cannot assign requested address" },
+ { WSAEAFNOSUPPORT, 0, "Address family not supported by protocol family" },
+ { WSAEALREADY, 0, "Operation already in progress" },
+ { WSAECONNABORTED, 0, "Software caused connection abort" },
+ { WSAECONNREFUSED, "ConnectException", "Connection refused" },
+ { WSAECONNRESET, 0, "Connection reset by peer" },
+ { WSAEDESTADDRREQ, 0, "Destination address required" },
+ { WSAEFAULT, 0, "Bad address" },
+ { WSAEHOSTDOWN, 0, "Host is down" },
+ { WSAEHOSTUNREACH, "NoRouteToHostException", "No route to host" },
+ { WSAEINPROGRESS, 0, "Operation now in progress" },
+ { WSAEINTR, 0, "Interrupted function call" },
+ { WSAEINVAL, 0, "Invalid argument" },
+ { WSAEISCONN, 0, "Socket is already connected" },
+ { WSAEMFILE, 0, "Too many open files" },
+ { WSAEMSGSIZE, 0, "The message is larger than the maximum supported by the underlying transport" },
+ { WSAENETDOWN, 0, "Network is down" },
+ { WSAENETRESET, 0, "Network dropped connection on reset" },
+ { WSAENETUNREACH, 0, "Network is unreachable" },
+ { WSAENOBUFS, 0, "No buffer space available (maximum connections reached?)" },
+ { WSAENOPROTOOPT, 0, "Bad protocol option" },
+ { WSAENOTCONN, 0, "Socket is not connected" },
+ { WSAENOTSOCK, 0, "Socket operation on nonsocket" },
+ { WSAEOPNOTSUPP, 0, "Operation not supported" },
+ { WSAEPFNOSUPPORT, 0, "Protocol family not supported" },
+ { WSAEPROCLIM, 0, "Too many processes" },
+ { WSAEPROTONOSUPPORT, 0, "Protocol not supported" },
+ { WSAEPROTOTYPE, 0, "Protocol wrong type for socket" },
+ { WSAESHUTDOWN, 0, "Cannot send after socket shutdown" },
+ { WSAESOCKTNOSUPPORT, 0, "Socket type not supported" },
+ { WSAETIMEDOUT, "ConnectException", "Connection timed out" },
+ { WSATYPE_NOT_FOUND, 0, "Class type not found" },
+ { WSAEWOULDBLOCK, 0, "Resource temporarily unavailable" },
+ { WSAHOST_NOT_FOUND, 0, "Host not found" },
+ { WSA_NOT_ENOUGH_MEMORY, 0, "Insufficient memory available" },
+ { WSANOTINITIALISED, 0, "Successful WSAStartup not yet performed" },
+ { WSANO_DATA, 0, "Valid name, no data record of requested type" },
+ { WSANO_RECOVERY, 0, "This is a nonrecoverable error" },
+ { WSASYSNOTREADY, 0, "Network subsystem is unavailable" },
+ { WSATRY_AGAIN, 0, "Nonauthoritative host not found" },
+ { WSAVERNOTSUPPORTED, 0, "Winsock.dll version out of range" },
+ { WSAEDISCON, 0, "Graceful shutdown in progress" },
+ { WSA_OPERATION_ABORTED, 0, "Overlapped operation aborted" },
+};
+
+/*
+ * Initialize Windows Sockets API support
+ */
+BOOL WINAPI
+DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved)
+{
+ WSADATA wsadata;
+
+ switch (reason) {
+ case DLL_PROCESS_ATTACH:
+ if (WSAStartup(MAKEWORD(2,2), &wsadata) != 0) {
+ return FALSE;
+ }
+ break;
+
+ case DLL_PROCESS_DETACH:
+ WSACleanup();
+ break;
+
+ default:
+ break;
+ }
+ return TRUE;
+}
+
+void initLocalAddrTable () {}
+
+/*
+ * Since winsock doesn't have the equivalent of strerror(errno)
+ * use table to lookup error text for the error.
+ */
+JNIEXPORT void JNICALL
+NET_ThrowNew(JNIEnv *env, int errorNum, char *msg)
+{
+ int i;
+ int table_size = sizeof(winsock_errors) /
+ sizeof(winsock_errors[0]);
+ char exc[256];
+ char fullMsg[256];
+ char *excP = NULL;
+
+ /*
+ * If exception already throw then don't overwrite it.
+ */
+ if ((*env)->ExceptionOccurred(env)) {
+ return;
+ }
+
+ /*
+ * Default message text if not provided
+ */
+ if (!msg) {
+ msg = "no further information";
+ }
+
+ /*
+ * Check table for known winsock errors
+ */
+ i=0;
+ while (i < table_size) {
+ if (errorNum == winsock_errors[i].errCode) {
+ break;
+ }
+ i++;
+ }
+
+ /*
+ * If found get pick the specific exception and error
+ * message corresponding to this error.
+ */
+ if (i < table_size) {
+ excP = (char *)winsock_errors[i].exc;
+ jio_snprintf(fullMsg, sizeof(fullMsg), "%s: %s",
+ (char *)winsock_errors[i].errString, msg);
+ } else {
+ jio_snprintf(fullMsg, sizeof(fullMsg),
+ "Unrecognized Windows Sockets error: %d: %s",
+ errorNum, msg);
+
+ }
+
+ /*
+ * Throw SocketException if no specific exception for this
+ * error.
+ */
+ if (excP == NULL) {
+ excP = "SocketException";
+ }
+ sprintf(exc, "%s%s", JNU_JAVANETPKG, excP);
+ JNU_ThrowByName(env, exc, fullMsg);
+}
+
+void
+NET_ThrowCurrent(JNIEnv *env, char *msg)
+{
+ NET_ThrowNew(env, WSAGetLastError(), msg);
+}
+
+void
+NET_ThrowSocketException(JNIEnv *env, char* msg)
+{
+ static jclass cls = NULL;
+ if (cls == NULL) {
+ cls = (*env)->FindClass(env, "java/net/SocketException");
+ CHECK_NULL(cls);
+ cls = (*env)->NewGlobalRef(env, cls);
+ CHECK_NULL(cls);
+ }
+ (*env)->ThrowNew(env, cls, msg);
+}
+
+void
+NET_ThrowByNameWithLastError(JNIEnv *env, const char *name,
+ const char *defaultDetail) {
+ char errmsg[255];
+ sprintf(errmsg, "errno: %d, error: %s\n", WSAGetLastError(), defaultDetail);
+ JNU_ThrowByNameWithLastError(env, name, errmsg);
+}
+
+jfieldID
+NET_GetFileDescriptorID(JNIEnv *env)
+{
+ jclass cls = (*env)->FindClass(env, "java/io/FileDescriptor");
+ CHECK_NULL_RETURN(cls, NULL);
+ return (*env)->GetFieldID(env, cls, "fd", "I");
+}
+
+jint IPv6_supported()
+{
+ HMODULE lib;
+ int fd = socket(AF_INET6, SOCK_STREAM, 0) ;
+ if (fd < 0) {
+ return JNI_FALSE;
+ }
+ closesocket (fd);
+
+ if ((lib = LoadLibrary ("ws2_32.dll")) == NULL) {
+ return JNI_FALSE;
+ }
+ if ((getaddrinfo_ptr = (LPFN_GETADDRINFO)GetProcAddress (lib, "getaddrinfo")) == NULL) {
+ FreeLibrary (lib);
+ return JNI_FALSE;
+ }
+ if ((freeaddrinfo_ptr = (LPFN_FREEADDRINFO)GetProcAddress (lib, "freeaddrinfo")) == NULL) {
+ FreeLibrary (lib);
+ return JNI_FALSE;
+ }
+ if ((getnameinfo_ptr = (LPFN_GETNAMEINFO)GetProcAddress (lib, "getnameinfo")) == NULL) {
+ FreeLibrary (lib);
+ return JNI_FALSE;
+ }
+ FreeLibrary(lib);
+
+ return JNI_TRUE;
+}
+
+jboolean NET_addrtransAvailable() {
+ return (jboolean)(getaddrinfo_ptr != NULL);
+}
+
+
+/*
+ * Return the default TOS value
+ */
+int NET_GetDefaultTOS() {
+ static int default_tos = -1;
+ OSVERSIONINFO ver;
+ HKEY hKey;
+ LONG ret;
+
+ /*
+ * If default ToS already determined then return it
+ */
+ if (default_tos >= 0) {
+ return default_tos;
+ }
+
+ /*
+ * Assume default is "normal service"
+ */
+ default_tos = 0;
+
+ /*
+ * Which OS is this?
+ */
+ ver.dwOSVersionInfoSize = sizeof(ver);
+ GetVersionEx(&ver);
+
+ /*
+ * If 2000 or greater then no default ToS in registry
+ */
+ if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
+ if (ver.dwMajorVersion >= 5) {
+ return default_tos;
+ }
+ }
+
+ /*
+ * Query the registry to see if a Default ToS has been set.
+ * Different registry entry for NT vs 95/98/ME.
+ */
+ if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
+ ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
+ "SYSTEM\\CurrentControlSet\\Services\\Tcp\\Parameters",
+ 0, KEY_READ, (PHKEY)&hKey);
+ } else {
+ ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
+ "SYSTEM\\CurrentControlSet\\Services\\VxD\\MSTCP\\Parameters",
+ 0, KEY_READ, (PHKEY)&hKey);
+ }
+ if (ret == ERROR_SUCCESS) {
+ DWORD dwLen;
+ DWORD dwDefaultTOS;
+ ULONG ulType;
+ dwLen = sizeof(dwDefaultTOS);
+
+ ret = RegQueryValueEx(hKey, "DefaultTOS", NULL, &ulType,
+ (LPBYTE)&dwDefaultTOS, &dwLen);
+ RegCloseKey(hKey);
+ if (ret == ERROR_SUCCESS) {
+ default_tos = (int)dwDefaultTOS;
+ }
+ }
+ return default_tos;
+}
+
+/* call NET_MapSocketOptionV6 for the IPv6 fd only
+ * and NET_MapSocketOption for the IPv4 fd
+ */
+JNIEXPORT int JNICALL
+NET_MapSocketOptionV6(jint cmd, int *level, int *optname) {
+
+ switch (cmd) {
+ case java_net_SocketOptions_IP_MULTICAST_IF:
+ case java_net_SocketOptions_IP_MULTICAST_IF2:
+ *level = IPPROTO_IPV6;
+ *optname = IPV6_MULTICAST_IF;
+ return 0;
+
+ case java_net_SocketOptions_IP_MULTICAST_LOOP:
+ *level = IPPROTO_IPV6;
+ *optname = IPV6_MULTICAST_LOOP;
+ return 0;
+ }
+ return NET_MapSocketOption (cmd, level, optname);
+}
+
+/*
+ * Map the Java level socket option to the platform specific
+ * level and option name.
+ */
+
+JNIEXPORT int JNICALL
+NET_MapSocketOption(jint cmd, int *level, int *optname) {
+
+ typedef struct {
+ jint cmd;
+ int level;
+ int optname;
+ } sockopts;
+
+ static sockopts opts[] = {
+ { java_net_SocketOptions_TCP_NODELAY, IPPROTO_TCP, TCP_NODELAY },
+ { java_net_SocketOptions_SO_OOBINLINE, SOL_SOCKET, SO_OOBINLINE },
+ { java_net_SocketOptions_SO_LINGER, SOL_SOCKET, SO_LINGER },
+ { java_net_SocketOptions_SO_SNDBUF, SOL_SOCKET, SO_SNDBUF },
+ { java_net_SocketOptions_SO_RCVBUF, SOL_SOCKET, SO_RCVBUF },
+ { java_net_SocketOptions_SO_KEEPALIVE, SOL_SOCKET, SO_KEEPALIVE },
+ { java_net_SocketOptions_SO_REUSEADDR, SOL_SOCKET, SO_REUSEADDR },
+ { java_net_SocketOptions_SO_BROADCAST, SOL_SOCKET, SO_BROADCAST },
+ { java_net_SocketOptions_IP_MULTICAST_IF, IPPROTO_IP, IP_MULTICAST_IF },
+ { java_net_SocketOptions_IP_MULTICAST_LOOP, IPPROTO_IP, IP_MULTICAST_LOOP },
+ { java_net_SocketOptions_IP_TOS, IPPROTO_IP, IP_TOS },
+
+ };
+
+
+ int i;
+
+ /*
+ * Map the Java level option to the native level
+ */
+ for (i=0; i<(int)(sizeof(opts) / sizeof(opts[0])); i++) {
+ if (cmd == opts[i].cmd) {
+ *level = opts[i].level;
+ *optname = opts[i].optname;
+ return 0;
+ }
+ }
+
+ /* not found */
+ return -1;
+}
+
+
+/*
+ * Wrapper for setsockopt dealing with Windows specific issues :-
+ *
+ * IP_TOS and IP_MULTICAST_LOOP can't be set on some Windows
+ * editions.
+ *
+ * The value for the type-of-service (TOS) needs to be masked
+ * to get consistent behaviour with other operating systems.
+ */
+JNIEXPORT int JNICALL
+NET_SetSockOpt(int s, int level, int optname, const void *optval,
+ int optlen)
+{
+ int rv;
+
+ if (level == IPPROTO_IP && optname == IP_TOS) {
+ int *tos = (int *)optval;
+ *tos &= (IPTOS_TOS_MASK | IPTOS_PREC_MASK);
+ }
+
+ rv = setsockopt(s, level, optname, optval, optlen);
+
+ if (rv == SOCKET_ERROR) {
+ /*
+ * IP_TOS & IP_MULTICAST_LOOP can't be set on some versions
+ * of Windows.
+ */
+ if ((WSAGetLastError() == WSAENOPROTOOPT) &&
+ (level == IPPROTO_IP) &&
+ (optname == IP_TOS || optname == IP_MULTICAST_LOOP)) {
+ rv = 0;
+ }
+
+ /*
+ * IP_TOS can't be set on unbound UDP sockets.
+ */
+ if ((WSAGetLastError() == WSAEINVAL) &&
+ (level == IPPROTO_IP) &&
+ (optname == IP_TOS)) {
+ rv = 0;
+ }
+ }
+
+ return rv;
+}
+
+/*
+ * Wrapper for setsockopt dealing with Windows specific issues :-
+ *
+ * IP_TOS is not supported on some versions of Windows so
+ * instead return the default value for the OS.
+ */
+JNIEXPORT int JNICALL
+NET_GetSockOpt(int s, int level, int optname, void *optval,
+ int *optlen)
+{
+ int rv;
+
+ rv = getsockopt(s, level, optname, optval, optlen);
+
+
+ /*
+ * IPPROTO_IP/IP_TOS is not supported on some Windows
+ * editions so return the default type-of-service
+ * value.
+ */
+ if (rv == SOCKET_ERROR) {
+
+ if (WSAGetLastError() == WSAENOPROTOOPT &&
+ level == IPPROTO_IP && optname == IP_TOS) {
+
+ int *tos;
+ tos = (int *)optval;
+ *tos = NET_GetDefaultTOS();
+
+ rv = 0;
+ }
+ }
+
+ return rv;
+}
+
+/*
+ * Wrapper for bind winsock call - transparent converts an
+ * error related to binding to a port that has exclusive access
+ * into an error indicating the port is in use (facilitates
+ * better error reporting).
+ */
+JNIEXPORT int JNICALL
+NET_Bind(int s, struct sockaddr *him, int len)
+{
+ int rv = bind(s, him, len);
+
+ if (rv == SOCKET_ERROR) {
+ /*
+ * If bind fails with WSAEACCES it means that a privileged
+ * process has done an exclusive bind (NT SP4/2000/XP only).
+ */
+ if (WSAGetLastError() == WSAEACCES) {
+ WSASetLastError(WSAEADDRINUSE);
+ }
+ }
+
+ return rv;
+}
+
+JNIEXPORT int JNICALL
+NET_SocketClose(int fd) {
+ struct linger l;
+ int ret;
+ int len = sizeof (l);
+ if (getsockopt(fd, SOL_SOCKET, SO_LINGER, (char *)&l, &len) == 0) {
+ if (l.l_onoff == 0) {
+ WSASendDisconnect(fd, NULL);
+ }
+ }
+ ret = closesocket (fd);
+ return ret;
+}
+
+JNIEXPORT int JNICALL
+NET_Timeout(int fd, long timeout) {
+ int ret;
+ fd_set tbl;
+ struct timeval t;
+ t.tv_sec = timeout / 1000;
+ t.tv_usec = (timeout % 1000) * 1000;
+ FD_ZERO(&tbl);
+ FD_SET(fd, &tbl);
+ ret = select (fd + 1, &tbl, 0, 0, &t);
+ return ret;
+}
+
+
+/*
+ * differs from NET_Timeout() as follows:
+ *
+ * If timeout = -1, it blocks forever.
+ *
+ * returns 1 or 2 depending if only one or both sockets
+ * fire at same time.
+ *
+ * *fdret is (one of) the active fds. If both sockets
+ * fire at same time, *fdret = fd always.
+ */
+JNIEXPORT int JNICALL
+NET_Timeout2(int fd, int fd1, long timeout, int *fdret) {
+ int ret;
+ fd_set tbl;
+ struct timeval t, *tP = &t;
+ if (timeout == -1) {
+ tP = 0;
+ } else {
+ t.tv_sec = timeout / 1000;
+ t.tv_usec = (timeout % 1000) * 1000;
+ }
+ FD_ZERO(&tbl);
+ FD_SET(fd, &tbl);
+ FD_SET(fd1, &tbl);
+ ret = select (0, &tbl, 0, 0, tP);
+ switch (ret) {
+ case 0:
+ return 0; /* timeout */
+ case 1:
+ if (FD_ISSET (fd, &tbl)) {
+ *fdret= fd;
+ } else {
+ *fdret= fd1;
+ }
+ return 1;
+ case 2:
+ *fdret= fd;
+ return 2;
+ }
+ return -1;
+}
+
+
+void dumpAddr (char *str, void *addr) {
+ struct SOCKADDR_IN6 *a = (struct SOCKADDR_IN6 *)addr;
+ int family = a->sin6_family;
+ printf ("%s\n", str);
+ if (family == AF_INET) {
+ struct sockaddr_in *him = (struct sockaddr_in *)addr;
+ printf ("AF_INET: port %d: %x\n", ntohs(him->sin_port),
+ ntohl(him->sin_addr.s_addr));
+ } else {
+ int i;
+ struct in6_addr *in = &a->sin6_addr;
+ printf ("AF_INET6 ");
+ printf ("port %d ", ntohs (a->sin6_port));
+ printf ("flow %d ", a->sin6_flowinfo);
+ printf ("addr ");
+ for (i=0; i<7; i++) {
+ printf ("%04x:", ntohs(in->s6_words[i]));
+ }
+ printf ("%04x", ntohs(in->s6_words[7]));
+ printf (" scope %d\n", a->sin6_scope_id);
+ }
+}
+
+/* Macro, which cleans-up the iv6bind structure,
+ * closes the two sockets (if open),
+ * and returns SOCKET_ERROR. Used in NET_BindV6 only.
+ */
+
+#define CLOSE_SOCKETS_AND_RETURN { \
+ if (fd != -1) { \
+ closesocket (fd); \
+ fd = -1; \
+ } \
+ if (ofd != -1) { \
+ closesocket (ofd); \
+ ofd = -1; \
+ } \
+ if (close_fd != -1) { \
+ closesocket (close_fd); \
+ close_fd = -1; \
+ } \
+ if (close_ofd != -1) { \
+ closesocket (close_ofd); \
+ close_ofd = -1; \
+ } \
+ b->ipv4_fd = b->ipv6_fd = -1; \
+ return SOCKET_ERROR; \
+}
+
+/*
+ * if ipv6 is available, call NET_BindV6 to bind to the required address/port.
+ * Because the same port number may need to be reserved in both v4 and v6 space,
+ * this may require socket(s) to be re-opened. Therefore, all of this information
+ * is passed in and returned through the ipv6bind structure.
+ *
+ * If the request is to bind to a specific address, then this (by definition) means
+ * only bind in either v4 or v6, and this is just the same as normal. ie. a single
+ * call to bind() will suffice. The other socket is closed in this case.
+ *
+ * The more complicated case is when the requested address is ::0 or 0.0.0.0.
+ *
+ * Two further cases:
+ * 2. If the reqeusted port is 0 (ie. any port) then we try to bind in v4 space
+ * first with a wild-card port argument. We then try to bind in v6 space
+ * using the returned port number. If this fails, we repeat the process
+ * until a free port common to both spaces becomes available.
+ *
+ * 3. If the requested port is a specific port, then we just try to get that
+ * port in both spaces, and if it is not free in both, then the bind fails.
+ *
+ * On failure, sockets are closed and an error returned with CLOSE_SOCKETS_AND_RETURN
+ */
+
+JNIEXPORT int JNICALL
+NET_BindV6(struct ipv6bind* b) {
+ int fd=-1, ofd=-1, rv, len;
+ /* need to defer close until new sockets created */
+ int close_fd=-1, close_ofd=-1;
+ SOCKETADDRESS oaddr; /* other address to bind */
+ int family = b->addr->him.sa_family;
+ int ofamily;
+ u_short port; /* requested port parameter */
+ u_short bound_port;
+
+ if (family == AF_INET && (b->addr->him4.sin_addr.s_addr != INADDR_ANY)) {
+ /* bind to v4 only */
+ int ret;
+ ret = NET_Bind (b->ipv4_fd, (struct sockaddr *)b->addr,
+ sizeof (struct sockaddr_in));
+ if (ret == SOCKET_ERROR) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+ closesocket (b->ipv6_fd);
+ b->ipv6_fd = -1;
+ return 0;
+ }
+ if (family == AF_INET6 && (!IN6_IS_ADDR_ANY(&b->addr->him6.sin6_addr))) {
+ /* bind to v6 only */
+ int ret;
+ ret = NET_Bind (b->ipv6_fd, (struct sockaddr *)b->addr,
+ sizeof (struct SOCKADDR_IN6));
+ if (ret == SOCKET_ERROR) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+ closesocket (b->ipv4_fd);
+ b->ipv4_fd = -1;
+ return 0;
+ }
+
+ /* We need to bind on both stacks, with the same port number */
+
+ memset (&oaddr, 0, sizeof(oaddr));
+ if (family == AF_INET) {
+ ofamily = AF_INET6;
+ fd = b->ipv4_fd;
+ ofd = b->ipv6_fd;
+ port = (u_short)GET_PORT (b->addr);
+ IN6ADDR_SETANY (&oaddr.him6);
+ oaddr.him6.sin6_port = port;
+ } else {
+ ofamily = AF_INET;
+ ofd = b->ipv4_fd;
+ fd = b->ipv6_fd;
+ port = (u_short)GET_PORT (b->addr);
+ oaddr.him4.sin_family = AF_INET;
+ oaddr.him4.sin_port = port;
+ oaddr.him4.sin_addr.s_addr = INADDR_ANY;
+ }
+
+ rv = NET_Bind (fd, (struct sockaddr *)b->addr, SOCKETADDRESS_LEN(b->addr));
+ if (rv == SOCKET_ERROR) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+
+ /* get the port and set it in the other address */
+ len = SOCKETADDRESS_LEN(b->addr);
+ if (getsockname(fd, (struct sockaddr *)b->addr, &len) == -1) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+ bound_port = GET_PORT (b->addr);
+ SET_PORT (&oaddr, bound_port);
+ if ((rv=NET_Bind (ofd, (struct sockaddr *) &oaddr,
+ SOCKETADDRESS_LEN (&oaddr))) == SOCKET_ERROR) {
+ int retries;
+ int sotype, arglen=sizeof(sotype);
+
+ /* no retries unless, the request was for any free port */
+
+ if (port != 0) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+
+ getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *)&sotype, &arglen);
+
+#define SOCK_RETRIES 50
+ /* 50 is an arbitrary limit, just to ensure that this
+ * cannot be an endless loop. Would expect socket creation to
+ * succeed sooner.
+ */
+ for (retries = 0; retries < SOCK_RETRIES; retries ++) {
+ int len;
+ close_fd = fd; fd = -1;
+ close_ofd = ofd; ofd = -1;
+ b->ipv4_fd = SOCKET_ERROR;
+ b->ipv6_fd = SOCKET_ERROR;
+
+ /* create two new sockets */
+ fd = socket (family, sotype, 0);
+ if (fd == SOCKET_ERROR) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+ ofd = socket (ofamily, sotype, 0);
+ if (ofd == SOCKET_ERROR) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+
+ /* bind random port on first socket */
+ SET_PORT (&oaddr, 0);
+ rv = NET_Bind (ofd, (struct sockaddr *)&oaddr, SOCKETADDRESS_LEN(&oaddr));
+ if (rv == SOCKET_ERROR) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+ /* close the original pair of sockets before continuing */
+ closesocket (close_fd);
+ closesocket (close_ofd);
+ close_fd = close_ofd = -1;
+
+ /* bind new port on second socket */
+ len = SOCKETADDRESS_LEN(&oaddr);
+ if (getsockname(ofd, (struct sockaddr *)&oaddr, &len) == -1) {
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+ bound_port = GET_PORT (&oaddr);
+ SET_PORT (b->addr, bound_port);
+ rv = NET_Bind (fd, (struct sockaddr *)b->addr, SOCKETADDRESS_LEN(b->addr));
+
+ if (rv != SOCKET_ERROR) {
+ if (family == AF_INET) {
+ b->ipv4_fd = fd;
+ b->ipv6_fd = ofd;
+ } else {
+ b->ipv4_fd = ofd;
+ b->ipv6_fd = fd;
+ }
+ return 0;
+ }
+ }
+ CLOSE_SOCKETS_AND_RETURN;
+ }
+ return 0;
+}
+
+/*
+ * Determine the default interface for an IPv6 address.
+ *
+ * Returns :-
+ * 0 if error
+ * > 0 interface index to use
+ */
+jint getDefaultIPv6Interface(JNIEnv *env, struct SOCKADDR_IN6 *target_addr)
+{
+ int ret;
+ DWORD b;
+ struct sockaddr_in6 route;
+ SOCKET fd = socket(AF_INET6, SOCK_STREAM, 0);
+ if (fd < 0) {
+ return 0;
+ }
+
+ ret = WSAIoctl(fd, SIO_ROUTING_INTERFACE_QUERY,
+ (void *)target_addr, sizeof(struct sockaddr_in6),
+ (void *)&route, sizeof(struct sockaddr_in6),
+ &b, 0, 0);
+ if (ret < 0) {
+ // error
+ closesocket(fd);
+ return 0;
+ } else {
+ closesocket(fd);
+ return route.sin6_scope_id;
+ }
+}
+
+/* If address types is IPv6, then IPv6 must be available. Otherwise
+ * no address can be generated. In the case of an IPv4 Inetaddress this
+ * method will return an IPv4 mapped address where IPv6 is available and
+ * v4MappedAddress is TRUE. Otherwise it will return a sockaddr_in
+ * structure for an IPv4 InetAddress.
+*/
+JNIEXPORT int JNICALL
+NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, struct sockaddr *him,
+ int *len, jboolean v4MappedAddress) {
+ jint family, iafam;
+ iafam = (*env)->GetIntField(env, iaObj, ia_familyID);
+ family = (iafam == IPv4)? AF_INET : AF_INET6;
+ if (ipv6_available() && !(family == AF_INET && v4MappedAddress == JNI_FALSE)) {
+ struct SOCKADDR_IN6 *him6 = (struct SOCKADDR_IN6 *)him;
+ jbyteArray ipaddress;
+ jbyte caddr[16];
+ jint address, scopeid = 0;
+ jint cached_scope_id = 0;
+
+ if (family == AF_INET) { /* will convert to IPv4-mapped address */
+ memset((char *) caddr, 0, 16);
+ address = (*env)->GetIntField(env, iaObj, ia_addressID);
+ if (address == INADDR_ANY) {
+ /* we would always prefer IPv6 wildcard address
+ caddr[10] = 0xff;
+ caddr[11] = 0xff; */
+ } else {
+ caddr[10] = 0xff;
+ caddr[11] = 0xff;
+ caddr[12] = ((address >> 24) & 0xff);
+ caddr[13] = ((address >> 16) & 0xff);
+ caddr[14] = ((address >> 8) & 0xff);
+ caddr[15] = (address & 0xff);
+ }
+ } else {
+ ipaddress = (*env)->GetObjectField(env, iaObj, ia6_ipaddressID);
+ scopeid = (jint)(*env)->GetIntField(env, iaObj, ia6_scopeidID);
+ cached_scope_id = (jint)(*env)->GetIntField(env, iaObj, ia6_cachedscopeidID);
+ (*env)->GetByteArrayRegion(env, ipaddress, 0, 16, caddr);
+ }
+
+ memset((char *)him6, 0, sizeof(struct SOCKADDR_IN6));
+ him6->sin6_port = (u_short) htons((u_short)port);
+ memcpy((void *)&(him6->sin6_addr), caddr, sizeof(struct in6_addr) );
+ him6->sin6_family = AF_INET6;
+ if ((family == AF_INET6) && IN6_IS_ADDR_LINKLOCAL( &(him6->sin6_addr) )
+ && (!scopeid && !cached_scope_id)) {
+ cached_scope_id = getDefaultIPv6Interface(env, him6);
+ (*env)->SetIntField(env, iaObj, ia6_cachedscopeidID, cached_scope_id);
+ }
+ him6->sin6_scope_id = scopeid != 0 ? scopeid : cached_scope_id;
+ *len = sizeof(struct SOCKADDR_IN6) ;
+ } else {
+ struct sockaddr_in *him4 = (struct sockaddr_in*)him;
+ jint address;
+ if (family != AF_INET) {
+ JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Protocol family unavailable");
+ return -1;
+ }
+ memset((char *) him4, 0, sizeof(struct sockaddr_in));
+ address = (int)(*env)->GetIntField(env, iaObj, ia_addressID);
+ him4->sin_port = htons((short) port);
+ him4->sin_addr.s_addr = (u_long) htonl(address);
+ him4->sin_family = AF_INET;
+ *len = sizeof(struct sockaddr_in);
+ }
+ return 0;
+}
+
+jint
+NET_GetPortFromSockaddr(struct sockaddr *him) {
+ if (him->sa_family == AF_INET6) {
+ return ntohs(((struct sockaddr_in6*)him)->sin6_port);
+ } else {
+ return ntohs(((struct sockaddr_in*)him)->sin_port);
+ }
+}
+
+int
+NET_IsIPv4Mapped(jbyte* caddr) {
+ int i;
+ for (i = 0; i < 10; i++) {
+ if (caddr[i] != 0x00) {
+ return 0; /* false */
+ }
+ }
+
+ if (((caddr[10] & 0xff) == 0xff) && ((caddr[11] & 0xff) == 0xff)) {
+ return 1; /* true */
+ }
+ return 0; /* false */
+}
+
+int
+NET_IPv4MappedToIPv4(jbyte* caddr) {
+ return ((caddr[12] & 0xff) << 24) | ((caddr[13] & 0xff) << 16) | ((caddr[14] & 0xff) << 8)
+ | (caddr[15] & 0xff);
+}
+
+int
+NET_IsEqual(jbyte* caddr1, jbyte* caddr2) {
+ int i;
+ for (i = 0; i < 16; i++) {
+ if (caddr1[i] != caddr2[i]) {
+ return 0; /* false */
+ }
+ }
+ return 1;
+}
+
+int getScopeID (struct sockaddr *him) {
+ struct SOCKADDR_IN6 *him6 = (struct SOCKADDR_IN6 *)him;
+ return him6->sin6_scope_id;
+}
+
+int cmpScopeID (unsigned int scope, struct sockaddr *him) {
+ struct SOCKADDR_IN6 *him6 = (struct SOCKADDR_IN6 *)him;
+ return him6->sin6_scope_id == scope;
+}
+
+/**
+ * Wrapper for select/poll with timeout on a single file descriptor.
+ *
+ * flags (defined in net_util_md.h can be any combination of
+ * NET_WAIT_READ, NET_WAIT_WRITE & NET_WAIT_CONNECT.
+ *
+ * The function will return when either the socket is ready for one
+ * of the specified operation or the timeout expired.
+ *
+ * It returns the time left from the timeout, or -1 if it expired.
+ */
+
+jint
+NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout)
+{
+ jlong prevTime = JVM_CurrentTimeMillis(env, 0);
+ jint read_rv;
+
+ while (1) {
+ jlong newTime;
+ fd_set rd, wr, ex;
+ struct timeval t;
+
+ t.tv_sec = timeout / 1000;
+ t.tv_usec = (timeout % 1000) * 1000;
+
+ FD_ZERO(&rd);
+ FD_ZERO(&wr);
+ FD_ZERO(&ex);
+ if (flags & NET_WAIT_READ) {
+ FD_SET(fd, &rd);
+ }
+ if (flags & NET_WAIT_WRITE) {
+ FD_SET(fd, &wr);
+ }
+ if (flags & NET_WAIT_CONNECT) {
+ FD_SET(fd, &wr);
+ FD_SET(fd, &ex);
+ }
+
+ errno = 0;
+ read_rv = select(fd+1, &rd, &wr, &ex, &t);
+
+ newTime = JVM_CurrentTimeMillis(env, 0);
+ timeout -= (newTime - prevTime);
+ if (timeout <= 0) {
+ return read_rv > 0 ? 0 : -1;
+ }
+ newTime = prevTime;
+
+ if (read_rv > 0) {
+ break;
+ }
+
+
+ } /* while */
+
+ return timeout;
+}
+
+int NET_Socket (int domain, int type, int protocol) {
+ int sock;
+ sock = socket (domain, type, protocol);
+ if (sock != INVALID_SOCKET) {
+ SetHandleInformation((HANDLE)(uintptr_t)sock, HANDLE_FLAG_INHERIT, FALSE);
+ }
+ return sock;
+}