/*
* Copyright (c) 1997, 2007, 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.
*/
package java.net;
import java.io.FileDescriptor;
import static ikvm.internal.JNI.*;
import static ikvm.internal.Winsock.*;
import static java.net.net_util_md.*;
import static java.net.InetAddress.IPv4;
import static java.net.InetAddress.IPv6;
final class TwoStacksPlainSocketImpl_c
{
static final int JVM_IO_ERR = -1;
static final int JVM_IO_INTR = -2;
static final int java_net_SocketOptions_SO_TIMEOUT = SocketOptions.SO_TIMEOUT;
static final int java_net_SocketOptions_SO_BINDADDR = SocketOptions.SO_BINDADDR;
static final int java_net_SocketOptions_SO_SNDBUF = SocketOptions.SO_SNDBUF;
static final int java_net_SocketOptions_SO_RCVBUF = SocketOptions.SO_RCVBUF;
static final int java_net_SocketOptions_IP_TOS = SocketOptions.IP_TOS;
static final int java_net_SocketOptions_SO_REUSEADDR = SocketOptions.SO_REUSEADDR;
static final int java_net_SocketOptions_TCP_NODELAY = SocketOptions.TCP_NODELAY;
static final int java_net_SocketOptions_SO_OOBINLINE = SocketOptions.SO_OOBINLINE;
static final int java_net_SocketOptions_SO_KEEPALIVE = SocketOptions.SO_KEEPALIVE;
static final int java_net_SocketOptions_SO_LINGER = SocketOptions.SO_LINGER;
/*
#include <windows.h>
#include <winsock2.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <sys/types.h>
#include "java_net_SocketOptions.h"
#include "java_net_TwoStacksPlainSocketImpl.h"
#include "java_net_SocketImpl.h"
#include "java_net_InetAddress.h"
#include "java_io_FileDescriptor.h"
#include "java_lang_Integer.h"
#include "jvm.h"
#include "net_util.h"
#include "jni_util.h"
*/
/************************************************************************
* TwoStacksPlainSocketImpl
*/
/*
static jfieldID IO_fd_fdID;
jfieldID psi_fdID;
jfieldID psi_fd1ID;
jfieldID psi_addressID;
jfieldID psi_portID;
jfieldID psi_localportID;
jfieldID psi_timeoutID;
jfieldID psi_trafficClassID;
jfieldID psi_serverSocketID;
jfieldID psi_lastfdID;
*/
/*
* the level of the TCP protocol for setsockopt and getsockopt
* we only want to look this up once, from the static initializer
* of TwoStacksPlainSocketImpl
*/
static int tcp_level = -1;
static cli.System.Net.Sockets.Socket getFD(JNIEnv env, TwoStacksPlainSocketImpl _this) {
FileDescriptor fdObj = _this.fd;
if (fdObj == NULL) {
return null;
}
return fdObj.getSocket();
}
static cli.System.Net.Sockets.Socket getFD1(JNIEnv env, TwoStacksPlainSocketImpl _this) {
FileDescriptor fdObj = _this.fd1;
if (fdObj == NULL) {
return null;
}
return fdObj.getSocket();
}
/*
* The initProto function is called whenever TwoStacksPlainSocketImpl is
* loaded, to cache fieldIds for efficiency. This is called everytime
* the Java class is loaded.
*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: initProto
* Signature: ()V
*/
/*
JNIEXPORT void JNICALL
Java_java_net_TwoStacksPlainSocketImpl_initProto(JNIEnv *env, jclass cls) {
struct protoent *proto = getprotobyname("TCP");
tcp_level = (proto == 0 ? IPPROTO_TCP: proto->p_proto);
psi_fdID = (*env)->GetFieldID(env, cls , "fd", "Ljava/io/FileDescriptor;");
CHECK_NULL(psi_fdID);
psi_fd1ID =(*env)->GetFieldID(env, cls , "fd1", "Ljava/io/FileDescriptor;");
CHECK_NULL(psi_fd1ID);
psi_addressID = (*env)->GetFieldID(env, cls, "address",
"Ljava/net/InetAddress;");
CHECK_NULL(psi_addressID);
psi_portID = (*env)->GetFieldID(env, cls, "port", "I");
CHECK_NULL(psi_portID);
psi_lastfdID = (*env)->GetFieldID(env, cls, "lastfd", "I");
CHECK_NULL(psi_portID);
psi_localportID = (*env)->GetFieldID(env, cls, "localport", "I");
CHECK_NULL(psi_localportID);
psi_timeoutID = (*env)->GetFieldID(env, cls, "timeout", "I");
CHECK_NULL(psi_timeoutID);
psi_trafficClassID = (*env)->GetFieldID(env, cls, "trafficClass", "I");
CHECK_NULL(psi_trafficClassID);
psi_serverSocketID = (*env)->GetFieldID(env, cls, "serverSocket",
"Ljava/net/ServerSocket;");
CHECK_NULL(psi_serverSocketID);
IO_fd_fdID = NET_GetFileDescriptorID(env);
CHECK_NULL(IO_fd_fdID);
}
*/
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketCreate
* Signature: (Z)V
*/
static void socketCreate(JNIEnv env, TwoStacksPlainSocketImpl _this, boolean stream) {
FileDescriptor fdObj = _this.fd;
FileDescriptor fd1Obj = _this.fd1;
cli.System.Net.Sockets.Socket fd = null;
cli.System.Net.Sockets.Socket fd1 = null;
if (IS_NULL(fdObj)) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"null fd object");
return;
}
fd = socket(AF_INET, (stream ? SOCK_STREAM: SOCK_DGRAM), 0);
if (fd == INVALID_SOCKET) {
NET_ThrowCurrent(env, "create");
return;
} else {
/* Set socket attribute so it is not passed to any child process */
//SetHandleInformation((HANDLE)(UINT_PTR)fd, HANDLE_FLAG_INHERIT, FALSE);
fdObj.setSocket(fd);
}
if (ipv6_available()) {
if (IS_NULL(fd1Obj)) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"null fd1 object");
fdObj.setSocket(null);
NET_SocketClose(fd);
return;
}
fd1 = socket(AF_INET6, (stream ? SOCK_STREAM: SOCK_DGRAM), 0);
if (fd1 == INVALID_SOCKET) {
NET_ThrowCurrent(env, "create");
fdObj.setSocket(null);
NET_SocketClose(fd);
return;
} else {
fd1Obj.setSocket(fd1);
}
} else {
_this.fd1 = null;
}
}
/*
* inetAddress is the address object passed to the socket connect
* call.
*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketConnect
* Signature: (Ljava/net/InetAddress;I)V
*/
static void socketConnect(JNIEnv env, TwoStacksPlainSocketImpl _this, InetAddress iaObj, int port, int timeout)
{
int localport = _this.localport;
/* family and localport are int fields of iaObj */
int family;
cli.System.Net.Sockets.Socket fd = null;
cli.System.Net.Sockets.Socket fd1 = null;
boolean ipv6_supported = ipv6_available();
/* fd initially points to the IPv4 socket and fd1 to the IPv6 socket
* If we want to connect to IPv6 then we swap the two sockets/objects
* This way, fd is always the connected socket, and fd1 always gets closed.
*/
FileDescriptor fdObj = _this.fd;
FileDescriptor fd1Obj = _this.fd1;
SOCKETADDRESS him;
him = new SOCKETADDRESS();
/* The result of the connection */
int connect_res;
if (!IS_NULL(fdObj)) {
fd = fdObj.getSocket();
}
if (ipv6_supported && !IS_NULL(fd1Obj)) {
fd1 = fd1Obj.getSocket();
}
if (IS_NULL(iaObj)) {
JNU_ThrowNullPointerException(env, "inet address argument is null.");
return;
}
if (NET_InetAddressToSockaddr(env, iaObj, port, him, JNI_FALSE) != 0) {
return;
}
family = him.him.sa_family;
if (family == AF_INET6) {
if (!ipv6_supported) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Protocol family not supported");
return;
} else {
if (fd1 == null) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Destination unreachable");
return;
}
/* close the v4 socket, and set fd to be the v6 socket */
_this.fd = fd1Obj;
_this.fd1 = null;
NET_SocketClose(fd);
fd = fd1; fdObj = fd1Obj;
}
} else {
if (fd1 != null) {
fd1Obj.setSocket(null);
NET_SocketClose(fd1);
}
if (fd == null) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Destination unreachable");
return;
}
}
_this.fd1 = null;
if (timeout <= 0) {
connect_res = connect(fd, him);
if (connect_res == SOCKET_ERROR) {
connect_res = WSAGetLastError();
}
} else {
int optval;
/* make socket non-blocking */
optval = 1;
ioctlsocket( fd, FIONBIO, optval );
/* initiate the connect */
connect_res = connect(fd, him);
if (connect_res == SOCKET_ERROR) {
if (WSAGetLastError() != WSAEWOULDBLOCK) {
connect_res = WSAGetLastError();
} else {
fd_set wr, ex;
wr = new fd_set(); ex = new fd_set();
timeval t = new timeval();
FD_ZERO(wr);
FD_ZERO(ex);
FD_SET(fd, wr);
FD_SET(fd, ex);
t.tv_sec = timeout / 1000;
t.tv_usec = (timeout % 1000) * 1000;
/*
* Wait for timout, connection established or
* connection failed.
*/
connect_res = select(null, wr, ex, t);
/*
* Timeout before connection is established/failed so
* we throw exception and shutdown input/output to prevent
* socket from being used.
* The socket should be closed immediately by the caller.
*/
if (connect_res == 0) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketTimeoutException",
"connect timed out");
shutdown( fd, SD_BOTH );
/* make socket blocking again - just in case */
optval = 0;
ioctlsocket( fd, FIONBIO, optval );
return;
}
/*
* We must now determine if the connection has been established
* or if it has failed. The logic here is designed to work around
* bug on Windows NT whereby using getsockopt to obtain the
* last error (SO_ERROR) indicates there is no error. The workaround
* on NT is to allow winsock to be scheduled and this is done by
* yielding and retrying. As yielding is problematic in heavy
* load conditions we attempt up to 3 times to get the error reason.
*/
if (!FD_ISSET(fd, ex)) {
connect_res = 0;
} else {
int retry;
for (retry=0; retry<3; retry++) {
int[] tmp = { 0 };
NET_GetSockOpt(fd, SOL_SOCKET, SO_ERROR,
tmp);
connect_res = tmp[0];
if (connect_res != 0) {
break;
}
Sleep(0);
}
if (connect_res == 0) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Unable to establish connection");
return;
}
}
}
}
/* make socket blocking again */
optval = 0;
ioctlsocket(fd, FIONBIO, optval);
}
if (connect_res != 0) {
if (connect_res == WSAEADDRNOTAVAIL) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"ConnectException",
"connect: Address is invalid on local machine, or port is not valid on remote machine");
} else {
NET_ThrowNew(env, connect_res, "connect");
}
return;
}
fdObj.setSocket(fd);
/* set the remote peer address and port */
_this.address = iaObj;
_this.port = port;
/*
* we need to initialize the local port field if bind was called
* previously to the connect (by the client) then localport field
* will already be initialized
*/
if (localport == 0) {
/* Now that we're a connected socket, let's extract the port number
* that the system chose for us and store it in the Socket object.
*/
if (getsockname(fd, him) == -1) {
if (WSAGetLastError() == WSAENOTSOCK) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Socket closed");
} else {
NET_ThrowCurrent(env, "getsockname failed");
}
return;
}
port = ntohs (GET_PORT(him));
_this.localport = port;
}
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketBind
* Signature: (Ljava/net/InetAddress;I)V
*/
static void socketBind(JNIEnv env, TwoStacksPlainSocketImpl _this, InetAddress iaObj, int localport) {
FileDescriptor fdObj = _this.fd;
FileDescriptor fd1Obj = _this.fd1;
cli.System.Net.Sockets.Socket fd = null;
cli.System.Net.Sockets.Socket fd1 = null;
boolean ipv6_supported = ipv6_available();
/* family is an int field of iaObj */
int family;
int rv;
SOCKETADDRESS him;
him = new SOCKETADDRESS();
family = iaObj.family;
if (family == IPv6 && !ipv6_supported) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Protocol family not supported");
return;
}
if (IS_NULL(fdObj) || (ipv6_supported && IS_NULL(fd1Obj))) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Socket closed");
return;
} else {
fd = fdObj.getSocket();
if (ipv6_supported) {
fd1 = fd1Obj.getSocket();
}
}
if (IS_NULL(iaObj)) {
JNU_ThrowNullPointerException(env, "inet address argument");
return;
}
if (NET_InetAddressToSockaddr(env, iaObj, localport,
him, JNI_FALSE) != 0) {
return;
}
if (ipv6_supported) {
ipv6bind v6bind = new ipv6bind();
v6bind.addr = him;
v6bind.ipv4_fd = fd;
v6bind.ipv6_fd = fd1;
rv = NET_BindV6(v6bind);
if (rv != -1) {
/* check if the fds have changed */
if (v6bind.ipv4_fd != fd) {
fd = v6bind.ipv4_fd;
if (fd == null) {
/* socket is closed. */
_this.fd = null;
} else {
/* socket was re-created */
fdObj.setSocket(fd);
}
}
if (v6bind.ipv6_fd != fd1) {
fd1 = v6bind.ipv6_fd;
if (fd1 == null) {
/* socket is closed. */
_this.fd1 = null;
} else {
/* socket was re-created */
fd1Obj.setSocket(fd1);
}
}
}
} else {
rv = NET_Bind(fd, him);
}
if (rv == -1) {
NET_ThrowCurrent(env, "JVM_Bind");
return;
}
/* set the address */
_this.address = iaObj;
/* intialize the local port */
if (localport == 0) {
/* Now that we're a bound socket, let's extract the port number
* that the system chose for us and store it in the Socket object.
*/
int port;
fd = him.him.sa_family == AF_INET? fd: fd1;
if (getsockname(fd, him) == -1) {
NET_ThrowCurrent(env, "getsockname in plain socketBind");
return;
}
port = ntohs (GET_PORT (him));
_this.localport = port;
} else {
_this.localport = localport;
}
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketListen
* Signature: (I)V
*/
static void socketListen (JNIEnv env, TwoStacksPlainSocketImpl _this, int count)
{
/* this FileDescriptor fd field */
FileDescriptor fdObj = _this.fd;
FileDescriptor fd1Obj = _this.fd1;
InetAddress address;
/* fdObj's int fd field */
cli.System.Net.Sockets.Socket fd = null;
cli.System.Net.Sockets.Socket fd1 = null;
SOCKETADDRESS addr = new SOCKETADDRESS();
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"socket closed");
return;
}
if (!IS_NULL(fdObj)) {
fd = fdObj.getSocket();
}
/* Listen on V4 if address type is v4 or if v6 and address is ::0.
* Listen on V6 if address type is v6 or if v4 and address is 0.0.0.0.
* In cases, where we listen on one space only, we close the other socket.
*/
address = _this.address;
if (IS_NULL(address)) {
JNU_ThrowNullPointerException(env, "socket address");
return;
}
if (NET_InetAddressToSockaddr(env, address, 0, addr,
JNI_FALSE) != 0) {
return;
}
if (addr.him.sa_family == AF_INET || IN6ADDR_ISANY(addr.him6)) {
/* listen on v4 */
if (listen(fd, count) == -1) {
NET_ThrowCurrent(env, "listen failed");
}
} else {
NET_SocketClose (fd);
_this.fd = null;
}
if (ipv6_available() && !IS_NULL(fd1Obj)) {
fd1 = fd1Obj.getSocket();
if (addr.him.sa_family == AF_INET6 || addr.him4.sin_addr.s_addr == INADDR_ANY) {
/* listen on v6 */
if (listen(fd1, count) == -1) {
NET_ThrowCurrent(env, "listen failed");
}
} else {
NET_SocketClose (fd1);
_this.fd1 = null;
}
}
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketAccept
* Signature: (Ljava/net/SocketImpl;)V
*/
static void socketAccept(JNIEnv env, TwoStacksPlainSocketImpl _this, SocketImpl socket)
{
/* fields on this */
int port;
int timeout = _this.timeout;
FileDescriptor fdObj = _this.fd;
FileDescriptor fd1Obj = _this.fd1;
/* the FileDescriptor field on socket */
FileDescriptor socketFdObj;
/* the InetAddress field on socket */
InetAddress socketAddressObj;
/* the fd int field on fdObj */
cli.System.Net.Sockets.Socket fd=null, fd1=null;
SOCKETADDRESS him;
him = new SOCKETADDRESS();
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Socket closed");
return;
}
if (!IS_NULL(fdObj)) {
fd = fdObj.getSocket();
}
if (!IS_NULL(fd1Obj)) {
fd1 = fd1Obj.getSocket();
}
if (IS_NULL(socket)) {
JNU_ThrowNullPointerException(env, "socket is null");
return;
} else {
socketFdObj = socket.fd;
socketAddressObj = socket.address;
}
if ((IS_NULL(socketAddressObj)) || (IS_NULL(socketFdObj))) {
JNU_ThrowNullPointerException(env, "socket address or fd obj");
return;
}
if (fd != null && fd1 != null) {
fd_set rfds = new fd_set();
timeval t = new timeval();
cli.System.Net.Sockets.Socket lastfd, fd2;
FD_ZERO(rfds);
FD_SET(fd,rfds);
FD_SET(fd1,rfds);
if (timeout != 0) {
t.tv_sec = timeout/1000;
t.tv_usec = (timeout%1000)*1000;
} else {
t = null;
}
int res = select (rfds, null, null, t);
if (res == 0) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketTimeoutException",
"Accept timed out");
return;
} else if (res == 1) {
fd2 = FD_ISSET(fd, rfds)? fd: fd1;
} else if (res == 2) {
/* avoid starvation */
lastfd = _this.lastfd;
if (lastfd != null) {
fd2 = lastfd==fd? fd1: fd;
} else {
fd2 = fd;
}
_this.lastfd = fd2;
} else {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"select failed");
return;
}
fd = fd2;
} else {
int ret;
if (fd1 != null) {
fd = fd1;
}
if (timeout != 0) {
ret = NET_Timeout(fd, timeout);
if (ret == 0) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketTimeoutException",
"Accept timed out");
return;
} else if (ret == -1) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException", "socket closed");
/* REMIND: SOCKET CLOSED PROBLEM */
/* NET_ThrowCurrent(env, "Accept failed"); */
return;
} else if (ret == -2) {
JNU_ThrowByName(env, JNU_JAVAIOPKG+"InterruptedIOException",
"operation interrupted");
return;
}
}
}
fd = accept(fd, him);
if (fd == null) {
/* REMIND: SOCKET CLOSED PROBLEM */
if (false) {
JNU_ThrowByName(env, JNU_JAVAIOPKG+"InterruptedIOException",
"operation interrupted");
} else {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"socket closed");
}
return;
}
socketFdObj.setSocket(fd);
if (him.him.sa_family == AF_INET) {
/*
* fill up the remote peer port and address in the new socket structure
*/
socketAddressObj = new Inet4Address(null, ntohl(him.him4.sin_addr.s_addr));
socket.address = socketAddressObj;
} else {
/* AF_INET6 -> Inet6Address */
// [IKVM] We need to convert scope_id 0 to -1 here, because for sin6_scope_id 0 means unspecified, whereas Java uses -1
int scopeId = him.him6.sin6_scope_id;
socketAddressObj = new Inet6Address(null, him.him6.sin6_addr, scopeId == 0 ? -1 : scopeId);
}
/* fields common to AF_INET and AF_INET6 */
port = ntohs (GET_PORT (him));
socket.port = port;
port = _this.localport;
socket.localport = port;
socket.address = socketAddressObj;
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketAvailable
* Signature: ()I
*/
static int socketAvailable(JNIEnv env, TwoStacksPlainSocketImpl _this) {
int[] available = { -1 };
int res;
FileDescriptor fdObj = _this.fd;
cli.System.Net.Sockets.Socket fd;
if (IS_NULL(fdObj)) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException", "Socket closed");
return -1;
} else {
fd = fdObj.getSocket();
}
res = ioctlsocket(fd, FIONREAD, available);
/* if result isn't 0, it means an error */
if (res != 0) {
NET_ThrowNew(env, res, "socket available");
}
return available[0];
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketClose
* Signature: ()V
*/
static void socketClose0(JNIEnv env, TwoStacksPlainSocketImpl _this, boolean useDeferredClose) {
FileDescriptor fdObj = _this.fd;
FileDescriptor fd1Obj = _this.fd1;
cli.System.Net.Sockets.Socket fd = null;
cli.System.Net.Sockets.Socket fd1 = null;
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"socket already closed");
return;
}
if (!IS_NULL(fdObj)) {
fd = fdObj.getSocket();
}
if (!IS_NULL(fd1Obj)) {
fd1 = fd1Obj.getSocket();
}
if (fd != null) {
fdObj.setSocket(null);
NET_SocketClose(fd);
}
if (fd1 != null) {
fd1Obj.setSocket(null);
NET_SocketClose(fd1);
}
}
/*
* Socket options for plainsocketImpl
*
*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketSetOption
* Signature: (IZLjava/lang/Object;)V
*/
static void socketSetOption(JNIEnv env, TwoStacksPlainSocketImpl _this, int cmd, boolean on, Object value) {
cli.System.Net.Sockets.Socket fd, fd1;
int[] level = new int[1];
int[] optname = new int[1];
Object optval;
/*
* Get SOCKET and check that it hasn't been closed
*/
fd = getFD(env, _this);
fd1 = getFD1(env, _this);
if (fd == null && fd1 == null) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException", "Socket closed");
return;
}
/*
* SO_TIMEOUT is the socket option used to specify the timeout
* for ServerSocket.accept and Socket.getInputStream().read.
* It does not typically map to a native level socket option.
* For Windows we special-case this and use the SOL_SOCKET/SO_RCVTIMEO
* socket option to specify a receive timeout on the socket. This
* receive timeout is applicable to Socket only and the socket
* option should not be set on ServerSocket.
*/
if (cmd == java_net_SocketOptions_SO_TIMEOUT) {
/*
* Don't enable the socket option on ServerSocket as it's
* meaningless (we don't receive on a ServerSocket).
*/
Object ssObj = _this.serverSocket;
if (ssObj != NULL) {
return;
}
/*
* SO_RCVTIMEO is only supported on Microsoft's implementation
* of Windows Sockets so if WSAENOPROTOOPT returned then
* reset flag and timeout will be implemented using
* select() -- see SocketInputStream.socketRead.
*/
if (isRcvTimeoutSupported) {
int timeout = ((Integer)value).intValue();
/*
* Disable SO_RCVTIMEO if timeout is <= 5 second.
*/
if (timeout <= 5000) {
timeout = 0;
}
if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, timeout) < 0) {
if (WSAGetLastError() == WSAENOPROTOOPT) {
isRcvTimeoutSupported = JNI_FALSE;
} else {
NET_ThrowCurrent(env, "setsockopt SO_RCVTIMEO");
}
}
if (fd1 != null) {
if (setsockopt(fd1, SOL_SOCKET, SO_RCVTIMEO, timeout) < 0) {
NET_ThrowCurrent(env, "setsockopt SO_RCVTIMEO");
}
}
}
return;
}
/*
* Map the Java level socket option to the platform specific
* level
*/
if (NET_MapSocketOption(cmd, level, optname) != 0) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Invalid option");
return;
}
switch (cmd) {
case java_net_SocketOptions_TCP_NODELAY :
case java_net_SocketOptions_SO_OOBINLINE :
case java_net_SocketOptions_SO_KEEPALIVE :
case java_net_SocketOptions_SO_REUSEADDR :
optval = on;
break;
case java_net_SocketOptions_SO_SNDBUF :
case java_net_SocketOptions_SO_RCVBUF :
case java_net_SocketOptions_IP_TOS :
optval = ((Integer)value).intValue();
break;
case java_net_SocketOptions_SO_LINGER :
{
linger ling = new linger();
if (on) {
ling.l_onoff = 1;
ling.l_linger = ((Integer)value).intValue();
} else {
ling.l_onoff = 0;
ling.l_linger = 0;
}
optval = ling;
}
break;
default: /* shouldn't get here */
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Option not supported by TwoStacksPlainSocketImpl");
return;
}
if (fd != null) {
if (NET_SetSockOpt(fd, level[0], optname[0], optval) < 0) {
NET_ThrowCurrent(env, "setsockopt");
}
}
if (fd1 != null) {
if (NET_SetSockOpt(fd1, level[0], optname[0], optval) < 0) {
NET_ThrowCurrent(env, "setsockopt");
}
}
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketGetOption
* Signature: (I)I
*/
static int socketGetOption(JNIEnv env, TwoStacksPlainSocketImpl _this, int opt, Object iaContainerObj) {
cli.System.Net.Sockets.Socket fd, fd1;
int[] level = new int[1];
int[] optname = new int[1];
Object optval;
/*
* Get SOCKET and check it hasn't been closed
*/
fd = getFD(env, _this);
fd1 = getFD1(env, _this);
if (fd == null && fd1 == null) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException", "Socket closed");
return -1;
}
if (fd == null) {
fd = fd1;
}
/* For IPv6, we assume both sockets have the same setting always */
/*
* SO_BINDADDR isn't a socket option
*/
if (opt == java_net_SocketOptions_SO_BINDADDR) {
SOCKETADDRESS him;
him = new SOCKETADDRESS();
int[] port = { 0 };
InetAddress iaObj;
if (fd == null) {
/* must be an IPV6 only socket. Case where both sockets are != -1
* is handled in java
*/
fd = getFD1 (env, _this);
}
if (getsockname(fd, him) < 0) {
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG+"SocketException",
"Error getting socket name");
return -1;
}
iaObj = NET_SockaddrToInetAddress(him, port);
((InetAddressContainer)iaContainerObj).addr = iaObj;
return 0; /* notice change from before */
}
/*
* Map the Java level socket option to the platform specific
* level and option name.
*/
if (NET_MapSocketOption(opt, level, optname) != 0) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException", "Invalid option");
return -1;
}
/*
* Args are int except for SO_LINGER
*/
if (opt == java_net_SocketOptions_SO_LINGER) {
optval = new linger();
} else {
optval = new int[1];
}
if (NET_GetSockOpt(fd, level[0], optname[0], optval) < 0) {
NET_ThrowCurrent(env, "getsockopt");
return -1;
}
switch (opt) {
case java_net_SocketOptions_SO_LINGER:
return (((linger)optval).l_onoff != 0 ? ((linger)optval).l_linger: -1);
case java_net_SocketOptions_SO_SNDBUF:
case java_net_SocketOptions_SO_RCVBUF:
case java_net_SocketOptions_IP_TOS:
return ((int[])optval)[0];
case java_net_SocketOptions_TCP_NODELAY :
case java_net_SocketOptions_SO_OOBINLINE :
case java_net_SocketOptions_SO_KEEPALIVE :
case java_net_SocketOptions_SO_REUSEADDR :
return (((int[])optval)[0] == 0) ? -1 : 1;
default: /* shouldn't get here */
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"Option not supported by TwoStacksPlainSocketImpl");
return -1;
}
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketShutdown
* Signature: (I)V
*/
static void socketShutdown(JNIEnv env, TwoStacksPlainSocketImpl _this, int howto)
{
FileDescriptor fdObj = _this.fd;
cli.System.Net.Sockets.Socket fd;
/*
* WARNING: THIS NEEDS LOCKING. ALSO: SHOULD WE CHECK for fd being
* -1 already?
*/
if (IS_NULL(fdObj)) {
JNU_ThrowByName(env, JNU_JAVANETPKG+"SocketException",
"socket already closed");
return;
} else {
fd = fdObj.getSocket();
}
shutdown(fd, howto);
}
/*
* Class: java_net_TwoStacksPlainSocketImpl
* Method: socketSendUrgentData
* Signature: (B)V
*/
static void socketSendUrgentData(JNIEnv env, TwoStacksPlainSocketImpl _this, int data) {
/* The fd field */
FileDescriptor fdObj = _this.fd;
int n;
cli.System.Net.Sockets.Socket fd;
if (IS_NULL(fdObj)) {
JNU_ThrowByName(env, "java/net/SocketException", "Socket closed");
return;
} else {
fd = fdObj.getSocket();
/* Bug 4086704 - If the Socket associated with this file descriptor
* was closed (sysCloseFD), the the file descriptor is set to -1.
*/
if (fd == null) {
JNU_ThrowByName(env, "java/net/SocketException", "Socket closed");
return;
}
}
n = send(fd, new byte[] { (byte)data }, 1, MSG_OOB);
if (n == JVM_IO_ERR) {
NET_ThrowCurrent(env, "send");
return;
}
if (n == JVM_IO_INTR) {
JNU_ThrowByName(env, "java/io/InterruptedIOException", null);
return;
}
}
}