2
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/*
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* Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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#include <windows.h>
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include <sys/types.h>
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#ifndef IPTOS_TOS_MASK
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#define IPTOS_TOS_MASK 0x1e
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#endif
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#ifndef IPTOS_PREC_MASK
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#define IPTOS_PREC_MASK 0xe0
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#endif
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#include "java_net_TwoStacksPlainDatagramSocketImpl.h"
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#include "java_net_SocketOptions.h"
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#include "java_net_NetworkInterface.h"
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#include "jvm.h"
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#include "jni_util.h"
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#include "net_util.h"
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#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
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#define IN_MULTICAST(i) IN_CLASSD(i)
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/************************************************************************
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* TwoStacksPlainDatagramSocketImpl
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*/
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static jfieldID IO_fd_fdID;
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static jfieldID pdsi_trafficClassID;
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jfieldID pdsi_fdID;
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jfieldID pdsi_fd1ID;
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jfieldID pdsi_fduseID;
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jfieldID pdsi_lastfdID;
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jfieldID pdsi_timeoutID;
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jfieldID pdsi_localPortID;
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jfieldID pdsi_connected;
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static jclass ia4_clazz;
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static jmethodID ia4_ctor;
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static CRITICAL_SECTION sizeCheckLock;
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/* Windows OS version is XP or better */
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static int xp_or_later = 0;
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/* Windows OS version is Windows 2000 or better */
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static int w2k_or_later = 0;
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/*
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* Notes about UDP/IPV6 on Windows (XP and 2003 server):
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*
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* fd always points to the IPv4 fd, and fd1 points to the IPv6 fd.
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* Both fds are used when we bind to a wild-card address. When a specific
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* address is used, only one of them is used.
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*/
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/*
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* Returns a java.lang.Integer based on 'i'
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*/
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jobject createInteger(JNIEnv *env, int i) {
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static jclass i_class;
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static jmethodID i_ctrID;
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static jfieldID i_valueID;
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if (i_class == NULL) {
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jclass c = (*env)->FindClass(env, "java/lang/Integer");
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CHECK_NULL_RETURN(c, NULL);
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i_ctrID = (*env)->GetMethodID(env, c, "<init>", "(I)V");
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CHECK_NULL_RETURN(i_ctrID, NULL);
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i_class = (*env)->NewGlobalRef(env, c);
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CHECK_NULL_RETURN(i_class, NULL);
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}
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return ( (*env)->NewObject(env, i_class, i_ctrID, i) );
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}
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/*
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* Returns a java.lang.Boolean based on 'b'
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*/
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jobject createBoolean(JNIEnv *env, int b) {
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static jclass b_class;
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static jmethodID b_ctrID;
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static jfieldID b_valueID;
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if (b_class == NULL) {
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jclass c = (*env)->FindClass(env, "java/lang/Boolean");
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CHECK_NULL_RETURN(c, NULL);
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b_ctrID = (*env)->GetMethodID(env, c, "<init>", "(Z)V");
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CHECK_NULL_RETURN(b_ctrID, NULL);
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b_class = (*env)->NewGlobalRef(env, c);
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CHECK_NULL_RETURN(b_class, NULL);
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}
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return( (*env)->NewObject(env, b_class, b_ctrID, (jboolean)(b!=0)) );
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}
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static int getFD(JNIEnv *env, jobject this) {
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jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
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if (fdObj == NULL) {
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return -1;
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}
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return (*env)->GetIntField(env, fdObj, IO_fd_fdID);
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}
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static int getFD1(JNIEnv *env, jobject this) {
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jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
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if (fdObj == NULL) {
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return -1;
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}
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return (*env)->GetIntField(env, fdObj, IO_fd_fdID);
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}
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/*
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* This function returns JNI_TRUE if the datagram size exceeds the underlying
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* provider's ability to send to the target address. The following OS
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* oddies have been observed :-
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*
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* 1. On Windows 95/98 if we try to send a datagram > 12k to an application
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* on the same machine then the send will fail silently.
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*
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* 2. On Windows ME if we try to send a datagram > supported by underlying
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* provider then send will not return an error.
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*
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* 3. On Windows NT/2000 if we exceeds the maximum size then send will fail
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* with WSAEADDRNOTAVAIL.
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*
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* 4. On Windows 95/98 if we exceed the maximum size when sending to
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* another machine then WSAEINVAL is returned.
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*
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*/
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jboolean exceedSizeLimit(JNIEnv *env, jint fd, jint addr, jint size)
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{
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#define DEFAULT_MSG_SIZE 65527
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static jboolean initDone;
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static jboolean is95or98;
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static int maxmsg;
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typedef struct _netaddr { /* Windows 95/98 only */
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unsigned long addr;
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struct _netaddr *next;
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} netaddr;
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static netaddr *addrList;
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netaddr *curr;
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/*
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* First time we are called we must determine which OS this is and also
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* get the maximum size supported by the underlying provider.
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*
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* In addition on 95/98 we must enumerate our IP addresses.
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*/
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if (!initDone) {
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EnterCriticalSection(&sizeCheckLock);
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185 |
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if (initDone) {
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/* another thread got there first */
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LeaveCriticalSection(&sizeCheckLock);
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189 |
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} else {
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OSVERSIONINFO ver;
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int len;
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193 |
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/*
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* Step 1: Determine which OS this is.
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*/
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ver.dwOSVersionInfoSize = sizeof(ver);
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GetVersionEx(&ver);
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199 |
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is95or98 = JNI_FALSE;
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if (ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS &&
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ver.dwMajorVersion == 4 &&
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(ver.dwMinorVersion == 0 || ver.dwMinorVersion == 10)) {
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204 |
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is95or98 = JNI_TRUE;
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206 |
}
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207 |
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/*
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* Step 2: Determine the maximum datagram supported by the
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* underlying provider. On Windows 95 if winsock hasn't been
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* upgraded (ie: unsupported configuration) then we assume
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* the default 64k limit.
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*/
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len = sizeof(maxmsg);
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if (NET_GetSockOpt(fd, SOL_SOCKET, SO_MAX_MSG_SIZE, (char *)&maxmsg, &len) < 0) {
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maxmsg = DEFAULT_MSG_SIZE;
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}
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218 |
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219 |
/*
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* Step 3: On Windows 95/98 then enumerate the IP addresses on
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* this machine. This is necesary because we need to check if the
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* datagram is being sent to an application on the same machine.
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*/
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224 |
if (is95or98) {
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char hostname[255];
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struct hostent *hp;
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227 |
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if (gethostname(hostname, sizeof(hostname)) == -1) {
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LeaveCriticalSection(&sizeCheckLock);
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JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Unable to obtain hostname");
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return JNI_TRUE;
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}
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hp = (struct hostent *)gethostbyname(hostname);
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if (hp != NULL) {
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struct in_addr **addrp = (struct in_addr **) hp->h_addr_list;
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236 |
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while (*addrp != (struct in_addr *) 0) {
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curr = (netaddr *)malloc(sizeof(netaddr));
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|
239 |
if (curr == NULL) {
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240 |
while (addrList != NULL) {
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curr = addrList->next;
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free(addrList);
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addrList = curr;
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}
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LeaveCriticalSection(&sizeCheckLock);
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JNU_ThrowOutOfMemoryError(env, "heap allocation failed");
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return JNI_TRUE;
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|
248 |
}
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curr->addr = htonl((*addrp)->S_un.S_addr);
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curr->next = addrList;
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addrList = curr;
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addrp++;
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}
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254 |
}
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|
255 |
}
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256 |
|
|
257 |
/*
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|
258 |
* Step 4: initialization is done so set flag and unlock cs
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|
259 |
*/
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|
260 |
initDone = JNI_TRUE;
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LeaveCriticalSection(&sizeCheckLock);
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|
262 |
}
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|
263 |
}
|
|
264 |
|
|
265 |
/*
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* Now examine the size of the datagram :-
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267 |
*
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* (a) If exceeds size of service provider return 'false' to indicate that
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269 |
* we exceed the limit.
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|
270 |
* (b) If not 95/98 then return 'true' to indicate that the size is okay.
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* (c) On 95/98 if the size is <12k we are okay.
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* (d) On 95/98 if size > 12k then check if the destination is the current
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* machine.
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*/
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if (size > maxmsg) { /* step (a) */
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return JNI_TRUE;
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|
277 |
}
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278 |
if (!is95or98) { /* step (b) */
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|
279 |
return JNI_FALSE;
|
|
280 |
}
|
|
281 |
if (size <= 12280) { /* step (c) */
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|
282 |
return JNI_FALSE;
|
|
283 |
}
|
|
284 |
|
|
285 |
/* step (d) */
|
|
286 |
|
|
287 |
if ((addr & 0x7f000000) == 0x7f000000) {
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|
288 |
return JNI_TRUE;
|
|
289 |
}
|
|
290 |
curr = addrList;
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|
291 |
while (curr != NULL) {
|
|
292 |
if (curr->addr == addr) {
|
|
293 |
return JNI_TRUE;
|
|
294 |
}
|
|
295 |
curr = curr->next;
|
|
296 |
}
|
|
297 |
return JNI_FALSE;
|
|
298 |
}
|
|
299 |
|
|
300 |
/*
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|
301 |
* Return JNI_TRUE if this Windows edition supports ICMP Port Unreachable
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|
302 |
*/
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303 |
__inline static jboolean supportPortUnreachable() {
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304 |
static jboolean initDone;
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|
305 |
static jboolean portUnreachableSupported;
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|
306 |
|
|
307 |
if (!initDone) {
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|
308 |
OSVERSIONINFO ver;
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|
309 |
ver.dwOSVersionInfoSize = sizeof(ver);
|
|
310 |
GetVersionEx(&ver);
|
|
311 |
if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT && ver.dwMajorVersion >= 5) {
|
|
312 |
portUnreachableSupported = JNI_TRUE;
|
|
313 |
} else {
|
|
314 |
portUnreachableSupported = JNI_FALSE;
|
|
315 |
}
|
|
316 |
initDone = JNI_TRUE;
|
|
317 |
}
|
|
318 |
return portUnreachableSupported;
|
|
319 |
}
|
|
320 |
|
|
321 |
/*
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|
322 |
* This function "purges" all outstanding ICMP port unreachable packets
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|
323 |
* outstanding on a socket and returns JNI_TRUE if any ICMP messages
|
|
324 |
* have been purged. The rational for purging is to emulate normal BSD
|
|
325 |
* behaviour whereby receiving a "connection reset" status resets the
|
|
326 |
* socket.
|
|
327 |
*/
|
|
328 |
static jboolean purgeOutstandingICMP(JNIEnv *env, jobject this, jint fd)
|
|
329 |
{
|
|
330 |
jboolean got_icmp = JNI_FALSE;
|
|
331 |
char buf[1];
|
|
332 |
fd_set tbl;
|
|
333 |
struct timeval t = { 0, 0 };
|
|
334 |
struct sockaddr_in rmtaddr;
|
|
335 |
int addrlen = sizeof(rmtaddr);
|
|
336 |
|
|
337 |
/*
|
|
338 |
* A no-op if this OS doesn't support it.
|
|
339 |
*/
|
|
340 |
if (!supportPortUnreachable()) {
|
|
341 |
return JNI_FALSE;
|
|
342 |
}
|
|
343 |
|
|
344 |
/*
|
|
345 |
* Peek at the queue to see if there is an ICMP port unreachable. If there
|
|
346 |
* is then receive it.
|
|
347 |
*/
|
|
348 |
FD_ZERO(&tbl);
|
|
349 |
FD_SET(fd, &tbl);
|
|
350 |
while(1) {
|
|
351 |
if (select(/*ignored*/fd+1, &tbl, 0, 0, &t) <= 0) {
|
|
352 |
break;
|
|
353 |
}
|
|
354 |
if (recvfrom(fd, buf, 1, MSG_PEEK,
|
|
355 |
(struct sockaddr *)&rmtaddr, &addrlen) != JVM_IO_ERR) {
|
|
356 |
break;
|
|
357 |
}
|
|
358 |
if (WSAGetLastError() != WSAECONNRESET) {
|
|
359 |
/* some other error - we don't care here */
|
|
360 |
break;
|
|
361 |
}
|
|
362 |
|
|
363 |
recvfrom(fd, buf, 1, 0, (struct sockaddr *)&rmtaddr, &addrlen);
|
|
364 |
got_icmp = JNI_TRUE;
|
|
365 |
}
|
|
366 |
|
|
367 |
return got_icmp;
|
|
368 |
}
|
|
369 |
|
|
370 |
|
|
371 |
/*
|
|
372 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
373 |
* Method: init
|
|
374 |
* Signature: ()V
|
|
375 |
*/
|
|
376 |
JNIEXPORT void JNICALL
|
|
377 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_init(JNIEnv *env, jclass cls) {
|
|
378 |
|
|
379 |
OSVERSIONINFO ver;
|
|
380 |
int version;
|
|
381 |
ver.dwOSVersionInfoSize = sizeof(ver);
|
|
382 |
GetVersionEx(&ver);
|
|
383 |
|
|
384 |
version = ver.dwMajorVersion * 10 + ver.dwMinorVersion;
|
|
385 |
xp_or_later = (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) && (version >= 51);
|
|
386 |
w2k_or_later = (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) && (version >= 50);
|
|
387 |
|
|
388 |
/* get fieldIDs */
|
|
389 |
pdsi_fdID = (*env)->GetFieldID(env, cls, "fd", "Ljava/io/FileDescriptor;");
|
|
390 |
CHECK_NULL(pdsi_fdID);
|
|
391 |
pdsi_fd1ID = (*env)->GetFieldID(env, cls, "fd1", "Ljava/io/FileDescriptor;");
|
|
392 |
CHECK_NULL(pdsi_fd1ID);
|
|
393 |
pdsi_timeoutID = (*env)->GetFieldID(env, cls, "timeout", "I");
|
|
394 |
CHECK_NULL(pdsi_timeoutID);
|
|
395 |
pdsi_fduseID = (*env)->GetFieldID(env, cls, "fduse", "I");
|
|
396 |
CHECK_NULL(pdsi_fduseID);
|
|
397 |
pdsi_lastfdID = (*env)->GetFieldID(env, cls, "lastfd", "I");
|
|
398 |
CHECK_NULL(pdsi_lastfdID);
|
|
399 |
pdsi_trafficClassID = (*env)->GetFieldID(env, cls, "trafficClass", "I");
|
|
400 |
CHECK_NULL(pdsi_trafficClassID);
|
|
401 |
pdsi_localPortID = (*env)->GetFieldID(env, cls, "localPort", "I");
|
|
402 |
CHECK_NULL(pdsi_localPortID);
|
|
403 |
pdsi_connected = (*env)->GetFieldID(env, cls, "connected", "Z");
|
|
404 |
CHECK_NULL(pdsi_connected);
|
|
405 |
|
|
406 |
cls = (*env)->FindClass(env, "java/io/FileDescriptor");
|
|
407 |
CHECK_NULL(cls);
|
|
408 |
IO_fd_fdID = NET_GetFileDescriptorID(env);
|
|
409 |
CHECK_NULL(IO_fd_fdID);
|
|
410 |
|
|
411 |
ia4_clazz = (*env)->FindClass(env, "java/net/Inet4Address");
|
|
412 |
CHECK_NULL(ia4_clazz);
|
|
413 |
ia4_clazz = (*env)->NewGlobalRef(env, ia4_clazz);
|
|
414 |
CHECK_NULL(ia4_clazz);
|
|
415 |
ia4_ctor = (*env)->GetMethodID(env, ia4_clazz, "<init>", "()V");
|
|
416 |
CHECK_NULL(ia4_ctor);
|
|
417 |
|
|
418 |
|
|
419 |
InitializeCriticalSection(&sizeCheckLock);
|
|
420 |
}
|
|
421 |
|
|
422 |
JNIEXPORT void JNICALL
|
|
423 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_bind0(JNIEnv *env, jobject this,
|
|
424 |
jint port, jobject addressObj) {
|
|
425 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
426 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
427 |
|
|
428 |
int fd, fd1, family;
|
|
429 |
int ipv6_supported = ipv6_available();
|
|
430 |
|
|
431 |
SOCKETADDRESS lcladdr;
|
|
432 |
int lcladdrlen;
|
|
433 |
int address;
|
|
434 |
|
|
435 |
family = (*env)->GetIntField(env, addressObj, ia_familyID);
|
|
436 |
if (family == IPv6 && !ipv6_supported) {
|
|
437 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
438 |
"Protocol family not supported");
|
|
439 |
return;
|
|
440 |
}
|
|
441 |
|
|
442 |
if (IS_NULL(fdObj) || (ipv6_supported && IS_NULL(fd1Obj))) {
|
|
443 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed");
|
|
444 |
return;
|
|
445 |
} else {
|
|
446 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
447 |
if (ipv6_supported) {
|
|
448 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
449 |
}
|
|
450 |
}
|
|
451 |
if (IS_NULL(addressObj)) {
|
|
452 |
JNU_ThrowNullPointerException(env, "argument address");
|
|
453 |
return;
|
|
454 |
} else {
|
|
455 |
address = (*env)->GetIntField(env, addressObj, ia_addressID);
|
|
456 |
}
|
|
457 |
|
|
458 |
if (NET_InetAddressToSockaddr(env, addressObj, port, (struct sockaddr *)&lcladdr, &lcladdrlen, JNI_FALSE) != 0) {
|
|
459 |
return;
|
|
460 |
}
|
|
461 |
|
|
462 |
if (ipv6_supported) {
|
|
463 |
struct ipv6bind v6bind;
|
|
464 |
v6bind.addr = &lcladdr;
|
|
465 |
v6bind.ipv4_fd = fd;
|
|
466 |
v6bind.ipv6_fd = fd1;
|
|
467 |
if (NET_BindV6(&v6bind) != -1) {
|
|
468 |
/* check if the fds have changed */
|
|
469 |
if (v6bind.ipv4_fd != fd) {
|
|
470 |
fd = v6bind.ipv4_fd;
|
|
471 |
if (fd == -1) {
|
|
472 |
/* socket is closed. */
|
|
473 |
(*env)->SetObjectField(env, this, pdsi_fdID, NULL);
|
|
474 |
} else {
|
|
475 |
/* socket was re-created */
|
|
476 |
(*env)->SetIntField(env, fdObj, IO_fd_fdID, fd);
|
|
477 |
}
|
|
478 |
}
|
|
479 |
if (v6bind.ipv6_fd != fd1) {
|
|
480 |
fd1 = v6bind.ipv6_fd;
|
|
481 |
if (fd1 == -1) {
|
|
482 |
/* socket is closed. */
|
|
483 |
(*env)->SetObjectField(env, this, pdsi_fd1ID, NULL);
|
|
484 |
} else {
|
|
485 |
/* socket was re-created */
|
|
486 |
(*env)->SetIntField(env, fd1Obj, IO_fd_fdID, fd1);
|
|
487 |
}
|
|
488 |
}
|
|
489 |
} else {
|
|
490 |
NET_ThrowCurrent (env, "Cannot bind");
|
|
491 |
return;
|
|
492 |
}
|
|
493 |
} else {
|
|
494 |
if (bind(fd, (struct sockaddr *)&lcladdr, lcladdrlen) == -1) {
|
|
495 |
if (WSAGetLastError() == WSAEACCES) {
|
|
496 |
WSASetLastError(WSAEADDRINUSE);
|
|
497 |
}
|
|
498 |
NET_ThrowCurrent(env, "Cannot bind");
|
|
499 |
return;
|
|
500 |
}
|
|
501 |
}
|
|
502 |
|
|
503 |
if (port == 0) {
|
|
504 |
if (fd == -1) {
|
|
505 |
/* must be an IPV6 only socket. */
|
|
506 |
fd = fd1;
|
|
507 |
}
|
|
508 |
if (getsockname(fd, (struct sockaddr *)&lcladdr, &lcladdrlen) == -1) {
|
|
509 |
NET_ThrowCurrent(env, "JVM_GetSockName");
|
|
510 |
return;
|
|
511 |
}
|
|
512 |
port = ntohs((u_short) GET_PORT (&lcladdr));
|
|
513 |
}
|
|
514 |
(*env)->SetIntField(env, this, pdsi_localPortID, port);
|
|
515 |
}
|
|
516 |
|
|
517 |
|
|
518 |
/*
|
|
519 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
520 |
* Method: connect0
|
|
521 |
* Signature: (Ljava/net/InetAddress;I)V
|
|
522 |
*/
|
|
523 |
|
|
524 |
JNIEXPORT void JNICALL
|
|
525 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_connect0(JNIEnv *env, jobject this,
|
|
526 |
jobject address, jint port) {
|
|
527 |
/* The object's field */
|
|
528 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
529 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
530 |
/* The fdObj'fd */
|
|
531 |
jint fd=-1, fd1=-1, fdc;
|
|
532 |
/* The packetAddress address, family and port */
|
|
533 |
jint addr, family;
|
|
534 |
SOCKETADDRESS rmtaddr;
|
|
535 |
int rmtaddrlen;
|
|
536 |
int ipv6_supported = ipv6_available();
|
|
537 |
|
|
538 |
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
|
|
539 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
540 |
"Socket closed");
|
|
541 |
return;
|
|
542 |
}
|
|
543 |
if (!IS_NULL(fdObj)) {
|
|
544 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
545 |
}
|
|
546 |
if (!IS_NULL(fd1Obj)) {
|
|
547 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
548 |
}
|
|
549 |
|
|
550 |
if (IS_NULL(address)) {
|
|
551 |
JNU_ThrowNullPointerException(env, "address");
|
|
552 |
return;
|
|
553 |
}
|
|
554 |
|
|
555 |
addr = (*env)->GetIntField(env, address, ia_addressID);
|
|
556 |
|
|
557 |
family = (*env)->GetIntField(env, address, ia_familyID);
|
|
558 |
if (family == IPv6 && !ipv6_supported) {
|
|
559 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
560 |
"Protocol family not supported");
|
|
561 |
return;
|
|
562 |
}
|
|
563 |
|
|
564 |
fdc = family == IPv4? fd: fd1;
|
|
565 |
|
|
566 |
if (xp_or_later) {
|
|
567 |
/* SIO_UDP_CONNRESET fixes a bug introduced in Windows 2000, which
|
|
568 |
* returns connection reset errors un connected UDP sockets (as well
|
|
569 |
* as connected sockets. The solution is to only enable this feature
|
|
570 |
* when the socket is connected
|
|
571 |
*/
|
|
572 |
DWORD x1, x2; /* ignored result codes */
|
|
573 |
int res, t = TRUE;
|
|
574 |
res = WSAIoctl(fdc,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0);
|
|
575 |
}
|
|
576 |
|
|
577 |
if (NET_InetAddressToSockaddr(env, address, port,(struct sockaddr *)&rmtaddr, &rmtaddrlen, JNI_FALSE) != 0) {
|
|
578 |
return;
|
|
579 |
}
|
|
580 |
|
|
581 |
if (connect(fdc, (struct sockaddr *)&rmtaddr, sizeof(rmtaddr)) == -1) {
|
|
582 |
NET_ThrowCurrent(env, "connect");
|
|
583 |
return;
|
|
584 |
}
|
|
585 |
}
|
|
586 |
|
|
587 |
/*
|
|
588 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
589 |
* Method: disconnect0
|
|
590 |
* Signature: ()V
|
|
591 |
*/
|
|
592 |
|
|
593 |
JNIEXPORT void JNICALL
|
|
594 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_disconnect0(JNIEnv *env, jobject this, jint family) {
|
|
595 |
/* The object's field */
|
|
596 |
jobject fdObj;
|
|
597 |
/* The fdObj'fd */
|
|
598 |
jint fd, len;
|
|
599 |
SOCKETADDRESS addr;
|
|
600 |
|
|
601 |
if (family == IPv4) {
|
|
602 |
fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
603 |
len = sizeof (struct sockaddr_in);
|
|
604 |
} else {
|
|
605 |
fdObj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
606 |
len = sizeof (struct SOCKADDR_IN6);
|
|
607 |
}
|
|
608 |
|
|
609 |
if (IS_NULL(fdObj)) {
|
|
610 |
/* disconnect doesn't throw any exceptions */
|
|
611 |
return;
|
|
612 |
}
|
|
613 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
614 |
|
|
615 |
memset(&addr, 0, len);
|
|
616 |
connect(fd, (struct sockaddr *)&addr, len);
|
|
617 |
|
|
618 |
/*
|
|
619 |
* use SIO_UDP_CONNRESET
|
|
620 |
* to disable ICMP port unreachable handling here.
|
|
621 |
*/
|
|
622 |
if (xp_or_later) {
|
|
623 |
DWORD x1, x2; /* ignored result codes */
|
|
624 |
int t = FALSE;
|
|
625 |
WSAIoctl(fd,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0);
|
|
626 |
}
|
|
627 |
}
|
|
628 |
|
|
629 |
/*
|
|
630 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
631 |
* Method: send
|
|
632 |
* Signature: (Ljava/net/DatagramPacket;)V
|
|
633 |
*/
|
|
634 |
JNIEXPORT void JNICALL
|
|
635 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_send(JNIEnv *env, jobject this,
|
|
636 |
jobject packet) {
|
|
637 |
|
|
638 |
char BUF[MAX_BUFFER_LEN];
|
|
639 |
char *fullPacket;
|
|
640 |
jobject fdObj;
|
|
641 |
jint fd;
|
|
642 |
|
|
643 |
jobject iaObj;
|
|
644 |
jint address;
|
|
645 |
jint family;
|
|
646 |
|
|
647 |
jint packetBufferOffset, packetBufferLen, packetPort;
|
|
648 |
jbyteArray packetBuffer;
|
|
649 |
jboolean connected;
|
|
650 |
|
|
651 |
SOCKETADDRESS rmtaddr;
|
|
652 |
SOCKETADDRESS *addrp = &rmtaddr;
|
|
653 |
int addrlen;
|
|
654 |
int x; /* DELETE ME */
|
|
655 |
|
|
656 |
|
|
657 |
if (IS_NULL(packet)) {
|
|
658 |
JNU_ThrowNullPointerException(env, "null packet");
|
|
659 |
return;
|
|
660 |
}
|
|
661 |
|
|
662 |
iaObj = (*env)->GetObjectField(env, packet, dp_addressID);
|
|
663 |
|
|
664 |
packetPort = (*env)->GetIntField(env, packet, dp_portID);
|
|
665 |
packetBufferOffset = (*env)->GetIntField(env, packet, dp_offsetID);
|
|
666 |
packetBuffer = (jbyteArray)(*env)->GetObjectField(env, packet, dp_bufID);
|
|
667 |
connected = (*env)->GetBooleanField(env, this, pdsi_connected);
|
|
668 |
|
|
669 |
if (IS_NULL(iaObj) || IS_NULL(packetBuffer)) {
|
|
670 |
JNU_ThrowNullPointerException(env, "null address || null buffer");
|
|
671 |
return;
|
|
672 |
}
|
|
673 |
|
|
674 |
family = (*env)->GetIntField(env, iaObj, ia_familyID);
|
|
675 |
if (family == IPv4) {
|
|
676 |
fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
677 |
} else {
|
|
678 |
if (!ipv6_available()) {
|
|
679 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
680 |
"Protocol not allowed");
|
|
681 |
return;
|
|
682 |
}
|
|
683 |
fdObj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
684 |
}
|
|
685 |
|
|
686 |
if (IS_NULL(fdObj)) {
|
|
687 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
688 |
"Socket closed");
|
|
689 |
return;
|
|
690 |
}
|
|
691 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
692 |
|
|
693 |
packetBufferLen = (*env)->GetIntField(env, packet, dp_lengthID);
|
|
694 |
|
|
695 |
if (connected) {
|
|
696 |
addrp = 0; /* arg to JVM_Sendto () null in this case */
|
|
697 |
addrlen = 0;
|
|
698 |
} else {
|
|
699 |
if (NET_InetAddressToSockaddr(env, iaObj, packetPort, (struct sockaddr *)&rmtaddr, &addrlen, JNI_FALSE) != 0) {
|
|
700 |
return;
|
|
701 |
}
|
|
702 |
}
|
|
703 |
|
|
704 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
705 |
|
|
706 |
/*
|
|
707 |
* On 95/98 if we try to send a datagram >12k to an application
|
|
708 |
* on the same machine then this will fail silently. Thus we
|
|
709 |
* catch this situation here so that we can throw an exception
|
|
710 |
* when this arises.
|
|
711 |
* On ME if we try to send a datagram with a size greater than
|
|
712 |
* that supported by the service provider then no error is
|
|
713 |
* returned.
|
|
714 |
*/
|
|
715 |
if (!w2k_or_later) { /* avoid this check on Win 2K or better. Does not work with IPv6.
|
|
716 |
* Check is not necessary on these OSes */
|
|
717 |
if (connected) {
|
|
718 |
address = (*env)->GetIntField(env, iaObj, ia_addressID);
|
|
719 |
} else {
|
|
720 |
address = ntohl(rmtaddr.him4.sin_addr.s_addr);
|
|
721 |
}
|
|
722 |
|
|
723 |
if (exceedSizeLimit(env, fd, address, packetBufferLen)) {
|
|
724 |
if (!((*env)->ExceptionOccurred(env))) {
|
|
725 |
NET_ThrowNew(env, WSAEMSGSIZE, "Datagram send failed");
|
|
726 |
}
|
|
727 |
return;
|
|
728 |
}
|
|
729 |
}
|
|
730 |
|
|
731 |
/* When JNI-ifying the JDK's IO routines, we turned
|
|
732 |
* read's and write's of byte arrays of size greater
|
|
733 |
* than 2048 bytes into several operations of size 2048.
|
|
734 |
* This saves a malloc()/memcpy()/free() for big
|
|
735 |
* buffers. This is OK for file IO and TCP, but that
|
|
736 |
* strategy violates the semantics of a datagram protocol.
|
|
737 |
* (one big send) != (several smaller sends). So here
|
|
738 |
* we *must* alloc the buffer. Note it needn't be bigger
|
|
739 |
* than 65,536 (0xFFFF) the max size of an IP packet.
|
|
740 |
* anything bigger is truncated anyway.
|
|
741 |
*/
|
|
742 |
fullPacket = (char *)malloc(packetBufferLen);
|
|
743 |
if (!fullPacket) {
|
|
744 |
JNU_ThrowOutOfMemoryError(env, "heap allocation failed");
|
|
745 |
return;
|
|
746 |
}
|
|
747 |
} else {
|
|
748 |
fullPacket = &(BUF[0]);
|
|
749 |
}
|
|
750 |
|
|
751 |
(*env)->GetByteArrayRegion(env, packetBuffer, packetBufferOffset, packetBufferLen,
|
|
752 |
(jbyte *)fullPacket);
|
|
753 |
switch (sendto(fd, fullPacket, packetBufferLen, 0,
|
|
754 |
(struct sockaddr *)addrp, addrlen)) {
|
|
755 |
case JVM_IO_ERR:
|
|
756 |
NET_ThrowCurrent(env, "Datagram send failed");
|
|
757 |
break;
|
|
758 |
|
|
759 |
case JVM_IO_INTR:
|
|
760 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
761 |
"operation interrupted");
|
|
762 |
}
|
|
763 |
|
|
764 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
765 |
free(fullPacket);
|
|
766 |
}
|
|
767 |
}
|
|
768 |
|
|
769 |
/*
|
|
770 |
* check which socket was last serviced when there was data on both sockets.
|
|
771 |
* Only call this if sure that there is data on both sockets.
|
|
772 |
*/
|
|
773 |
static int checkLastFD (JNIEnv *env, jobject this, int fd, int fd1) {
|
|
774 |
int nextfd, lastfd = (*env)->GetIntField(env, this, pdsi_lastfdID);
|
|
775 |
if (lastfd == -1) {
|
|
776 |
/* arbitrary. Choose fd */
|
|
777 |
(*env)->SetIntField(env, this, pdsi_lastfdID, fd);
|
|
778 |
return fd;
|
|
779 |
} else {
|
|
780 |
if (lastfd == fd) {
|
|
781 |
nextfd = fd1;
|
|
782 |
} else {
|
|
783 |
nextfd = fd;
|
|
784 |
}
|
|
785 |
(*env)->SetIntField(env, this, pdsi_lastfdID, nextfd);
|
|
786 |
return nextfd;
|
|
787 |
}
|
|
788 |
}
|
|
789 |
|
|
790 |
/*
|
|
791 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
792 |
* Method: peek
|
|
793 |
* Signature: (Ljava/net/InetAddress;)I
|
|
794 |
*/
|
|
795 |
JNIEXPORT jint JNICALL
|
|
796 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_peek(JNIEnv *env, jobject this,
|
|
797 |
jobject addressObj) {
|
|
798 |
|
|
799 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
800 |
jint timeout = (*env)->GetIntField(env, this, pdsi_timeoutID);
|
|
801 |
jint fd;
|
|
802 |
|
|
803 |
/* The address and family fields of addressObj */
|
|
804 |
jint address, family;
|
|
805 |
|
|
806 |
int n;
|
|
807 |
struct sockaddr_in remote_addr;
|
|
808 |
jint remote_addrsize = sizeof (remote_addr);
|
|
809 |
char buf[1];
|
|
810 |
BOOL retry;
|
|
811 |
jlong prevTime = 0;
|
|
812 |
|
|
813 |
if (IS_NULL(fdObj)) {
|
|
814 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Socket closed");
|
|
815 |
return -1;
|
|
816 |
} else {
|
|
817 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
818 |
if (fd < 0) {
|
|
819 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
820 |
"socket closed");
|
|
821 |
return -1;
|
|
822 |
}
|
|
823 |
}
|
|
824 |
if (IS_NULL(addressObj)) {
|
|
825 |
JNU_ThrowNullPointerException(env, "Null address in peek()");
|
|
826 |
} else {
|
|
827 |
address = (*env)->GetIntField(env, addressObj, ia_addressID);
|
|
828 |
/* We only handle IPv4 for now. Will support IPv6 once its in the os */
|
|
829 |
family = AF_INET;
|
|
830 |
}
|
|
831 |
|
|
832 |
do {
|
|
833 |
retry = FALSE;
|
|
834 |
|
|
835 |
/*
|
|
836 |
* If a timeout has been specified then we select on the socket
|
|
837 |
* waiting for a read event or a timeout.
|
|
838 |
*/
|
|
839 |
if (timeout) {
|
|
840 |
int ret;
|
|
841 |
prevTime = JVM_CurrentTimeMillis(env, 0);
|
|
842 |
ret = NET_Timeout (fd, timeout);
|
|
843 |
if (ret == 0) {
|
|
844 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException",
|
|
845 |
"Peek timed out");
|
|
846 |
return ret;
|
|
847 |
} else if (ret == JVM_IO_ERR) {
|
|
848 |
NET_ThrowCurrent(env, "timeout in datagram socket peek");
|
|
849 |
return ret;
|
|
850 |
} else if (ret == JVM_IO_INTR) {
|
|
851 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
852 |
"operation interrupted");
|
|
853 |
return ret;
|
|
854 |
}
|
|
855 |
}
|
|
856 |
|
|
857 |
/* now try the peek */
|
|
858 |
n = recvfrom(fd, buf, 1, MSG_PEEK,
|
|
859 |
(struct sockaddr *)&remote_addr, &remote_addrsize);
|
|
860 |
|
|
861 |
if (n == JVM_IO_ERR) {
|
|
862 |
if (WSAGetLastError() == WSAECONNRESET) {
|
|
863 |
jboolean connected;
|
|
864 |
|
|
865 |
/*
|
|
866 |
* An icmp port unreachable - we must receive this as Windows
|
|
867 |
* does not reset the state of the socket until this has been
|
|
868 |
* received.
|
|
869 |
*/
|
|
870 |
purgeOutstandingICMP(env, this, fd);
|
|
871 |
|
|
872 |
connected = (*env)->GetBooleanField(env, this, pdsi_connected);
|
|
873 |
if (connected) {
|
|
874 |
JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException",
|
|
875 |
"ICMP Port Unreachable");
|
|
876 |
return 0;
|
|
877 |
}
|
|
878 |
|
|
879 |
/*
|
|
880 |
* If a timeout was specified then we need to adjust it because
|
|
881 |
* we may have used up some of the timeout befor the icmp port
|
|
882 |
* unreachable arrived.
|
|
883 |
*/
|
|
884 |
if (timeout) {
|
|
885 |
jlong newTime = JVM_CurrentTimeMillis(env, 0);
|
|
886 |
timeout -= (newTime - prevTime);
|
|
887 |
if (timeout <= 0) {
|
|
888 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException",
|
|
889 |
"Receive timed out");
|
|
890 |
return 0;
|
|
891 |
}
|
|
892 |
prevTime = newTime;
|
|
893 |
}
|
|
894 |
|
|
895 |
/* Need to retry the recv */
|
|
896 |
retry = TRUE;
|
|
897 |
}
|
|
898 |
}
|
|
899 |
} while (retry);
|
|
900 |
|
|
901 |
if (n == JVM_IO_ERR && WSAGetLastError() != WSAEMSGSIZE) {
|
|
902 |
NET_ThrowCurrent(env, "Datagram peek failed");
|
|
903 |
return 0;
|
|
904 |
}
|
|
905 |
if (n == JVM_IO_INTR) {
|
|
906 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", 0);
|
|
907 |
return 0;
|
|
908 |
}
|
|
909 |
(*env)->SetIntField(env, addressObj, ia_addressID,
|
|
910 |
ntohl(remote_addr.sin_addr.s_addr));
|
|
911 |
(*env)->SetIntField(env, addressObj, ia_familyID, IPv4);
|
|
912 |
|
|
913 |
/* return port */
|
|
914 |
return ntohs(remote_addr.sin_port);
|
|
915 |
}
|
|
916 |
|
|
917 |
JNIEXPORT jint JNICALL
|
|
918 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_peekData(JNIEnv *env, jobject this,
|
|
919 |
jobject packet) {
|
|
920 |
|
|
921 |
char BUF[MAX_BUFFER_LEN];
|
|
922 |
char *fullPacket;
|
|
923 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
924 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
925 |
jint timeout = (*env)->GetIntField(env, this, pdsi_timeoutID);
|
|
926 |
|
|
927 |
jbyteArray packetBuffer;
|
|
928 |
jint packetBufferOffset, packetBufferLen;
|
|
929 |
|
|
930 |
int fd, fd1, fduse, nsockets=0, errorCode;
|
|
931 |
int port;
|
|
932 |
jbyteArray data;
|
|
933 |
|
|
934 |
int checkBoth = 0, datalen;
|
|
935 |
int n;
|
|
936 |
SOCKETADDRESS remote_addr;
|
|
937 |
jint remote_addrsize=sizeof(remote_addr);
|
|
938 |
BOOL retry;
|
|
939 |
jlong prevTime = 0;
|
|
940 |
|
|
941 |
if (!IS_NULL(fdObj)) {
|
|
942 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
943 |
if (fd < 0) {
|
|
944 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
945 |
"socket closed");
|
|
946 |
return -1;
|
|
947 |
}
|
|
948 |
nsockets = 1;
|
|
949 |
}
|
|
950 |
|
|
951 |
if (!IS_NULL(fd1Obj)) {
|
|
952 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
953 |
if (fd1 < 0) {
|
|
954 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
955 |
"socket closed");
|
|
956 |
return -1;
|
|
957 |
}
|
|
958 |
nsockets ++;
|
|
959 |
}
|
|
960 |
|
|
961 |
switch (nsockets) {
|
|
962 |
case 0:
|
|
963 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
964 |
"socket closed");
|
|
965 |
return -1;
|
|
966 |
case 1:
|
|
967 |
if (!IS_NULL(fdObj)) {
|
|
968 |
fduse = fd;
|
|
969 |
} else {
|
|
970 |
fduse = fd1;
|
|
971 |
}
|
|
972 |
break;
|
|
973 |
case 2:
|
|
974 |
checkBoth = TRUE;
|
|
975 |
break;
|
|
976 |
}
|
|
977 |
|
|
978 |
if (IS_NULL(packet)) {
|
|
979 |
JNU_ThrowNullPointerException(env, "packet");
|
|
980 |
return -1;
|
|
981 |
}
|
|
982 |
|
|
983 |
packetBuffer = (*env)->GetObjectField(env, packet, dp_bufID);
|
|
984 |
|
|
985 |
if (IS_NULL(packetBuffer)) {
|
|
986 |
JNU_ThrowNullPointerException(env, "packet buffer");
|
|
987 |
return -1;
|
|
988 |
}
|
|
989 |
|
|
990 |
packetBufferOffset = (*env)->GetIntField(env, packet, dp_offsetID);
|
|
991 |
packetBufferLen = (*env)->GetIntField(env, packet, dp_bufLengthID);
|
|
992 |
|
|
993 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
994 |
|
|
995 |
/* When JNI-ifying the JDK's IO routines, we turned
|
|
996 |
* read's and write's of byte arrays of size greater
|
|
997 |
* than 2048 bytes into several operations of size 2048.
|
|
998 |
* This saves a malloc()/memcpy()/free() for big
|
|
999 |
* buffers. This is OK for file IO and TCP, but that
|
|
1000 |
* strategy violates the semantics of a datagram protocol.
|
|
1001 |
* (one big send) != (several smaller sends). So here
|
|
1002 |
* we *must* alloc the buffer. Note it needn't be bigger
|
|
1003 |
* than 65,536 (0xFFFF) the max size of an IP packet.
|
|
1004 |
* anything bigger is truncated anyway.
|
|
1005 |
*/
|
|
1006 |
fullPacket = (char *)malloc(packetBufferLen);
|
|
1007 |
if (!fullPacket) {
|
|
1008 |
JNU_ThrowOutOfMemoryError(env, "heap allocation failed");
|
|
1009 |
return -1;
|
|
1010 |
}
|
|
1011 |
} else {
|
|
1012 |
fullPacket = &(BUF[0]);
|
|
1013 |
}
|
|
1014 |
|
|
1015 |
do {
|
|
1016 |
int ret;
|
|
1017 |
retry = FALSE;
|
|
1018 |
|
|
1019 |
/*
|
|
1020 |
* If a timeout has been specified then we select on the socket
|
|
1021 |
* waiting for a read event or a timeout.
|
|
1022 |
*/
|
|
1023 |
if (checkBoth) {
|
|
1024 |
int t = timeout == 0 ? -1: timeout;
|
|
1025 |
prevTime = JVM_CurrentTimeMillis(env, 0);
|
|
1026 |
ret = NET_Timeout2 (fd, fd1, t, &fduse);
|
|
1027 |
/* all subsequent calls to recv() or select() will use the same fd
|
|
1028 |
* for this call to peek() */
|
|
1029 |
if (ret <= 0) {
|
|
1030 |
if (ret == 0) {
|
|
1031 |
JNU_ThrowByName(env,JNU_JAVANETPKG "SocketTimeoutException",
|
|
1032 |
"Peek timed out");
|
|
1033 |
} else if (ret == JVM_IO_ERR) {
|
|
1034 |
NET_ThrowCurrent(env, "timeout in datagram socket peek");
|
|
1035 |
} else if (ret == JVM_IO_INTR) {
|
|
1036 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
1037 |
"operation interrupted");
|
|
1038 |
}
|
|
1039 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1040 |
free(fullPacket);
|
|
1041 |
}
|
|
1042 |
return -1;
|
|
1043 |
}
|
|
1044 |
if (ret == 2) {
|
|
1045 |
fduse = checkLastFD (env, this, fd, fd1);
|
|
1046 |
}
|
|
1047 |
checkBoth = FALSE;
|
|
1048 |
} else if (timeout) {
|
|
1049 |
if (prevTime == 0) {
|
|
1050 |
prevTime = JVM_CurrentTimeMillis(env, 0);
|
|
1051 |
}
|
|
1052 |
ret = NET_Timeout (fduse, timeout);
|
|
1053 |
if (ret <= 0) {
|
|
1054 |
if (ret == 0) {
|
|
1055 |
JNU_ThrowByName(env,JNU_JAVANETPKG "SocketTimeoutException",
|
|
1056 |
"Receive timed out");
|
|
1057 |
} else if (ret == JVM_IO_ERR) {
|
|
1058 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1059 |
"Socket closed");
|
|
1060 |
} else if (ret == JVM_IO_INTR) {
|
|
1061 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
1062 |
"operation interrupted");
|
|
1063 |
}
|
|
1064 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1065 |
free(fullPacket);
|
|
1066 |
}
|
|
1067 |
return -1;
|
|
1068 |
}
|
|
1069 |
}
|
|
1070 |
|
|
1071 |
/* receive the packet */
|
|
1072 |
n = recvfrom(fduse, fullPacket, packetBufferLen, MSG_PEEK,
|
|
1073 |
(struct sockaddr *)&remote_addr, &remote_addrsize);
|
|
1074 |
port = (int) ntohs ((u_short) GET_PORT((SOCKETADDRESS *)&remote_addr));
|
|
1075 |
if (n == JVM_IO_ERR) {
|
|
1076 |
if (WSAGetLastError() == WSAECONNRESET) {
|
|
1077 |
jboolean connected;
|
|
1078 |
|
|
1079 |
/*
|
|
1080 |
* An icmp port unreachable - we must receive this as Windows
|
|
1081 |
* does not reset the state of the socket until this has been
|
|
1082 |
* received.
|
|
1083 |
*/
|
|
1084 |
purgeOutstandingICMP(env, this, fduse);
|
|
1085 |
|
|
1086 |
connected = (*env)->GetBooleanField(env, this, pdsi_connected);
|
|
1087 |
if (connected) {
|
|
1088 |
JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException",
|
|
1089 |
"ICMP Port Unreachable");
|
|
1090 |
|
|
1091 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1092 |
free(fullPacket);
|
|
1093 |
}
|
|
1094 |
return -1;
|
|
1095 |
}
|
|
1096 |
|
|
1097 |
/*
|
|
1098 |
* If a timeout was specified then we need to adjust it because
|
|
1099 |
* we may have used up some of the timeout befor the icmp port
|
|
1100 |
* unreachable arrived.
|
|
1101 |
*/
|
|
1102 |
if (timeout) {
|
|
1103 |
jlong newTime = JVM_CurrentTimeMillis(env, 0);
|
|
1104 |
timeout -= (newTime - prevTime);
|
|
1105 |
if (timeout <= 0) {
|
|
1106 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException",
|
|
1107 |
"Receive timed out");
|
|
1108 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1109 |
free(fullPacket);
|
|
1110 |
}
|
|
1111 |
return -1;
|
|
1112 |
}
|
|
1113 |
prevTime = newTime;
|
|
1114 |
}
|
|
1115 |
retry = TRUE;
|
|
1116 |
}
|
|
1117 |
}
|
|
1118 |
} while (retry);
|
|
1119 |
|
|
1120 |
/* truncate the data if the packet's length is too small */
|
|
1121 |
if (n > packetBufferLen) {
|
|
1122 |
n = packetBufferLen;
|
|
1123 |
}
|
|
1124 |
if (n < 0) {
|
|
1125 |
errorCode = WSAGetLastError();
|
|
1126 |
/* check to see if it's because the buffer was too small */
|
|
1127 |
if (errorCode == WSAEMSGSIZE) {
|
|
1128 |
/* it is because the buffer is too small. It's UDP, it's
|
|
1129 |
* unreliable, it's all good. discard the rest of the
|
|
1130 |
* data..
|
|
1131 |
*/
|
|
1132 |
n = packetBufferLen;
|
|
1133 |
} else {
|
|
1134 |
/* failure */
|
|
1135 |
(*env)->SetIntField(env, packet, dp_lengthID, 0);
|
|
1136 |
}
|
|
1137 |
}
|
|
1138 |
if (n == -1) {
|
|
1139 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed");
|
|
1140 |
} else if (n == -2) {
|
|
1141 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
1142 |
"operation interrupted");
|
|
1143 |
} else if (n < 0) {
|
|
1144 |
NET_ThrowCurrent(env, "Datagram receive failed");
|
|
1145 |
} else {
|
|
1146 |
jobject packetAddress;
|
|
1147 |
|
|
1148 |
/*
|
|
1149 |
* Check if there is an InetAddress already associated with this
|
|
1150 |
* packet. If so we check if it is the same source address. We
|
|
1151 |
* can't update any existing InetAddress because it is immutable
|
|
1152 |
*/
|
|
1153 |
packetAddress = (*env)->GetObjectField(env, packet, dp_addressID);
|
|
1154 |
if (packetAddress != NULL) {
|
|
1155 |
if (!NET_SockaddrEqualsInetAddress(env, (struct sockaddr *)
|
|
1156 |
&remote_addr, packetAddress)) {
|
|
1157 |
/* force a new InetAddress to be created */
|
|
1158 |
packetAddress = NULL;
|
|
1159 |
}
|
|
1160 |
}
|
|
1161 |
if (packetAddress == NULL) {
|
|
1162 |
packetAddress = NET_SockaddrToInetAddress(env, (struct sockaddr *)
|
|
1163 |
&remote_addr, &port);
|
|
1164 |
/* stuff the new Inetaddress in the packet */
|
|
1165 |
(*env)->SetObjectField(env, packet, dp_addressID, packetAddress);
|
|
1166 |
}
|
|
1167 |
|
|
1168 |
/* populate the packet */
|
|
1169 |
(*env)->SetByteArrayRegion(env, packetBuffer, packetBufferOffset, n,
|
|
1170 |
(jbyte *)fullPacket);
|
|
1171 |
(*env)->SetIntField(env, packet, dp_portID, port);
|
|
1172 |
(*env)->SetIntField(env, packet, dp_lengthID, n);
|
|
1173 |
}
|
|
1174 |
|
|
1175 |
/* make sure receive() picks up the right fd */
|
|
1176 |
(*env)->SetIntField(env, this, pdsi_fduseID, fduse);
|
|
1177 |
|
|
1178 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1179 |
free(fullPacket);
|
|
1180 |
}
|
|
1181 |
return port;
|
|
1182 |
}
|
|
1183 |
|
|
1184 |
/*
|
|
1185 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
1186 |
* Method: receive
|
|
1187 |
* Signature: (Ljava/net/DatagramPacket;)V
|
|
1188 |
*/
|
|
1189 |
JNIEXPORT void JNICALL
|
|
1190 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_receive0(JNIEnv *env, jobject this,
|
|
1191 |
jobject packet) {
|
|
1192 |
|
|
1193 |
char BUF[MAX_BUFFER_LEN];
|
|
1194 |
char *fullPacket;
|
|
1195 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
1196 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
1197 |
jint timeout = (*env)->GetIntField(env, this, pdsi_timeoutID);
|
|
1198 |
jbyteArray packetBuffer;
|
|
1199 |
jint packetBufferOffset, packetBufferLen;
|
|
1200 |
int ipv6_supported = ipv6_available();
|
|
1201 |
|
|
1202 |
/* as a result of the changes for ipv6, peek() or peekData()
|
|
1203 |
* must be called prior to receive() so that fduse can be set.
|
|
1204 |
*/
|
|
1205 |
int fd, fd1, fduse, errorCode;
|
|
1206 |
jbyteArray data;
|
|
1207 |
|
|
1208 |
int datalen;
|
|
1209 |
int n, nsockets=0;
|
|
1210 |
SOCKETADDRESS remote_addr;
|
|
1211 |
jint remote_addrsize=sizeof(remote_addr);
|
|
1212 |
BOOL retry;
|
|
1213 |
jlong prevTime = 0, selectTime=0;
|
|
1214 |
jboolean connected;
|
|
1215 |
|
|
1216 |
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
|
|
1217 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1218 |
"Socket closed");
|
|
1219 |
return;
|
|
1220 |
}
|
|
1221 |
|
|
1222 |
if (!IS_NULL(fdObj)) {
|
|
1223 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
1224 |
nsockets ++;
|
|
1225 |
}
|
|
1226 |
if (!IS_NULL(fd1Obj)) {
|
|
1227 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
1228 |
nsockets ++;
|
|
1229 |
}
|
|
1230 |
|
|
1231 |
if (nsockets == 2) { /* need to choose one of them */
|
|
1232 |
/* was fduse set in peek? */
|
|
1233 |
fduse = (*env)->GetIntField(env, this, pdsi_fduseID);
|
|
1234 |
if (fduse == -1) {
|
|
1235 |
/* not set in peek(), must select on both sockets */
|
|
1236 |
int ret, t = (timeout == 0) ? -1: timeout;
|
|
1237 |
ret = NET_Timeout2 (fd, fd1, t, &fduse);
|
|
1238 |
if (ret == 2) {
|
|
1239 |
fduse = checkLastFD (env, this, fd, fd1);
|
|
1240 |
} else if (ret <= 0) {
|
|
1241 |
if (ret == 0) {
|
|
1242 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException",
|
|
1243 |
"Receive timed out");
|
|
1244 |
} else if (ret == JVM_IO_ERR) {
|
|
1245 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1246 |
"Socket closed");
|
|
1247 |
} else if (ret == JVM_IO_INTR) {
|
|
1248 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
1249 |
"operation interrupted");
|
|
1250 |
}
|
|
1251 |
return;
|
|
1252 |
}
|
|
1253 |
}
|
|
1254 |
} else if (!ipv6_supported) {
|
|
1255 |
fduse = fd;
|
|
1256 |
} else if (IS_NULL(fdObj)) {
|
|
1257 |
/* ipv6 supported: and this socket bound to an IPV6 only address */
|
|
1258 |
fduse = fd1;
|
|
1259 |
} else {
|
|
1260 |
/* ipv6 supported: and this socket bound to an IPV4 only address */
|
|
1261 |
fduse = fd;
|
|
1262 |
}
|
|
1263 |
|
|
1264 |
if (IS_NULL(packet)) {
|
|
1265 |
JNU_ThrowNullPointerException(env, "packet");
|
|
1266 |
return;
|
|
1267 |
}
|
|
1268 |
|
|
1269 |
packetBuffer = (*env)->GetObjectField(env, packet, dp_bufID);
|
|
1270 |
|
|
1271 |
if (IS_NULL(packetBuffer)) {
|
|
1272 |
JNU_ThrowNullPointerException(env, "packet buffer");
|
|
1273 |
return;
|
|
1274 |
}
|
|
1275 |
|
|
1276 |
packetBufferOffset = (*env)->GetIntField(env, packet, dp_offsetID);
|
|
1277 |
packetBufferLen = (*env)->GetIntField(env, packet, dp_bufLengthID);
|
|
1278 |
|
|
1279 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1280 |
|
|
1281 |
/* When JNI-ifying the JDK's IO routines, we turned
|
|
1282 |
* read's and write's of byte arrays of size greater
|
|
1283 |
* than 2048 bytes into several operations of size 2048.
|
|
1284 |
* This saves a malloc()/memcpy()/free() for big
|
|
1285 |
* buffers. This is OK for file IO and TCP, but that
|
|
1286 |
* strategy violates the semantics of a datagram protocol.
|
|
1287 |
* (one big send) != (several smaller sends). So here
|
|
1288 |
* we *must* alloc the buffer. Note it needn't be bigger
|
|
1289 |
* than 65,536 (0xFFFF) the max size of an IP packet.
|
|
1290 |
* anything bigger is truncated anyway.
|
|
1291 |
*/
|
|
1292 |
fullPacket = (char *)malloc(packetBufferLen);
|
|
1293 |
if (!fullPacket) {
|
|
1294 |
JNU_ThrowOutOfMemoryError(env, "heap allocation failed");
|
|
1295 |
return;
|
|
1296 |
}
|
|
1297 |
} else {
|
|
1298 |
fullPacket = &(BUF[0]);
|
|
1299 |
}
|
|
1300 |
|
|
1301 |
|
|
1302 |
|
|
1303 |
/*
|
|
1304 |
* If this Windows edition supports ICMP port unreachable and if we
|
|
1305 |
* are not connected then we need to know if a timeout has been specified
|
|
1306 |
* and if so we need to pick up the current time. These are required in
|
|
1307 |
* order to implement the semantics of timeout, viz :-
|
|
1308 |
* timeout set to t1 but ICMP port unreachable arrives in t2 where
|
|
1309 |
* t2 < t1. In this case we must discard the ICMP packets and then
|
|
1310 |
* wait for the next packet up to a maximum of t1 minus t2.
|
|
1311 |
*/
|
|
1312 |
connected = (*env)->GetBooleanField(env, this, pdsi_connected);
|
|
1313 |
if (supportPortUnreachable() && !connected && timeout &&!ipv6_supported) {
|
|
1314 |
prevTime = JVM_CurrentTimeMillis(env, 0);
|
|
1315 |
}
|
|
1316 |
|
|
1317 |
if (timeout && nsockets == 1) {
|
|
1318 |
int ret;
|
|
1319 |
ret = NET_Timeout(fduse, timeout);
|
|
1320 |
if (ret <= 0) {
|
|
1321 |
if (ret == 0) {
|
|
1322 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException",
|
|
1323 |
"Receive timed out");
|
|
1324 |
} else if (ret == JVM_IO_ERR) {
|
|
1325 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1326 |
"Socket closed");
|
|
1327 |
} else if (ret == JVM_IO_INTR) {
|
|
1328 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
1329 |
"operation interrupted");
|
|
1330 |
}
|
|
1331 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1332 |
free(fullPacket);
|
|
1333 |
}
|
|
1334 |
return;
|
|
1335 |
}
|
|
1336 |
}
|
|
1337 |
|
|
1338 |
/*
|
|
1339 |
* Loop only if we discarding ICMP port unreachable packets
|
|
1340 |
*/
|
|
1341 |
do {
|
|
1342 |
retry = FALSE;
|
|
1343 |
|
|
1344 |
/* receive the packet */
|
|
1345 |
n = recvfrom(fduse, fullPacket, packetBufferLen, 0,
|
|
1346 |
(struct sockaddr *)&remote_addr, &remote_addrsize);
|
|
1347 |
|
|
1348 |
if (n == JVM_IO_ERR) {
|
|
1349 |
if (WSAGetLastError() == WSAECONNRESET) {
|
|
1350 |
/*
|
|
1351 |
* An icmp port unreachable has been received - consume any other
|
|
1352 |
* outstanding packets.
|
|
1353 |
*/
|
|
1354 |
purgeOutstandingICMP(env, this, fduse);
|
|
1355 |
|
|
1356 |
/*
|
|
1357 |
* If connected throw a PortUnreachableException
|
|
1358 |
*/
|
|
1359 |
|
|
1360 |
if (connected) {
|
|
1361 |
JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException",
|
|
1362 |
"ICMP Port Unreachable");
|
|
1363 |
|
|
1364 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1365 |
free(fullPacket);
|
|
1366 |
}
|
|
1367 |
|
|
1368 |
return;
|
|
1369 |
}
|
|
1370 |
|
|
1371 |
/*
|
|
1372 |
* If a timeout was specified then we need to adjust it because
|
|
1373 |
* we may have used up some of the timeout before the icmp port
|
|
1374 |
* unreachable arrived.
|
|
1375 |
*/
|
|
1376 |
if (timeout) {
|
|
1377 |
int ret;
|
|
1378 |
jlong newTime = JVM_CurrentTimeMillis(env, 0);
|
|
1379 |
timeout -= (newTime - prevTime);
|
|
1380 |
prevTime = newTime;
|
|
1381 |
|
|
1382 |
if (timeout <= 0) {
|
|
1383 |
ret = 0;
|
|
1384 |
} else {
|
|
1385 |
ret = NET_Timeout(fduse, timeout);
|
|
1386 |
}
|
|
1387 |
|
|
1388 |
if (ret <= 0) {
|
|
1389 |
if (ret == 0) {
|
|
1390 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException",
|
|
1391 |
"Receive timed out");
|
|
1392 |
} else if (ret == JVM_IO_ERR) {
|
|
1393 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1394 |
"Socket closed");
|
|
1395 |
} else if (ret == JVM_IO_INTR) {
|
|
1396 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
1397 |
"operation interrupted");
|
|
1398 |
}
|
|
1399 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1400 |
free(fullPacket);
|
|
1401 |
}
|
|
1402 |
return;
|
|
1403 |
}
|
|
1404 |
}
|
|
1405 |
|
|
1406 |
/*
|
|
1407 |
* An ICMP port unreachable was received but we are
|
|
1408 |
* not connected so ignore it.
|
|
1409 |
*/
|
|
1410 |
retry = TRUE;
|
|
1411 |
}
|
|
1412 |
}
|
|
1413 |
} while (retry);
|
|
1414 |
|
|
1415 |
/* truncate the data if the packet's length is too small */
|
|
1416 |
if (n > packetBufferLen) {
|
|
1417 |
n = packetBufferLen;
|
|
1418 |
}
|
|
1419 |
if (n < 0) {
|
|
1420 |
errorCode = WSAGetLastError();
|
|
1421 |
/* check to see if it's because the buffer was too small */
|
|
1422 |
if (errorCode == WSAEMSGSIZE) {
|
|
1423 |
/* it is because the buffer is too small. It's UDP, it's
|
|
1424 |
* unreliable, it's all good. discard the rest of the
|
|
1425 |
* data..
|
|
1426 |
*/
|
|
1427 |
n = packetBufferLen;
|
|
1428 |
} else {
|
|
1429 |
/* failure */
|
|
1430 |
(*env)->SetIntField(env, packet, dp_lengthID, 0);
|
|
1431 |
}
|
|
1432 |
}
|
|
1433 |
if (n == -1) {
|
|
1434 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed");
|
|
1435 |
} else if (n == -2) {
|
|
1436 |
JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException",
|
|
1437 |
"operation interrupted");
|
|
1438 |
} else if (n < 0) {
|
|
1439 |
NET_ThrowCurrent(env, "Datagram receive failed");
|
|
1440 |
} else {
|
|
1441 |
int port;
|
|
1442 |
jobject packetAddress;
|
|
1443 |
|
|
1444 |
/*
|
|
1445 |
* Check if there is an InetAddress already associated with this
|
|
1446 |
* packet. If so we check if it is the same source address. We
|
|
1447 |
* can't update any existing InetAddress because it is immutable
|
|
1448 |
*/
|
|
1449 |
packetAddress = (*env)->GetObjectField(env, packet, dp_addressID);
|
|
1450 |
|
|
1451 |
if (packetAddress != NULL) {
|
|
1452 |
if (!NET_SockaddrEqualsInetAddress(env, (struct sockaddr *)&remote_addr, packetAddress)) {
|
|
1453 |
/* force a new InetAddress to be created */
|
|
1454 |
packetAddress = NULL;
|
|
1455 |
}
|
|
1456 |
}
|
|
1457 |
if (packetAddress == NULL) {
|
|
1458 |
packetAddress = NET_SockaddrToInetAddress(env, (struct sockaddr *)&remote_addr, &port);
|
|
1459 |
/* stuff the new Inetaddress in the packet */
|
|
1460 |
(*env)->SetObjectField(env, packet, dp_addressID, packetAddress);
|
|
1461 |
} else {
|
|
1462 |
/* only get the new port number */
|
|
1463 |
port = NET_GetPortFromSockaddr((struct sockaddr *)&remote_addr);
|
|
1464 |
}
|
|
1465 |
/* populate the packet */
|
|
1466 |
(*env)->SetByteArrayRegion(env, packetBuffer, packetBufferOffset, n,
|
|
1467 |
(jbyte *)fullPacket);
|
|
1468 |
(*env)->SetIntField(env, packet, dp_portID, port);
|
|
1469 |
(*env)->SetIntField(env, packet, dp_lengthID, n);
|
|
1470 |
}
|
|
1471 |
if (packetBufferLen > MAX_BUFFER_LEN) {
|
|
1472 |
free(fullPacket);
|
|
1473 |
}
|
|
1474 |
}
|
|
1475 |
|
|
1476 |
/*
|
|
1477 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
1478 |
* Method: datagramSocketCreate
|
|
1479 |
* Signature: ()V
|
|
1480 |
*/
|
|
1481 |
JNIEXPORT void JNICALL
|
|
1482 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_datagramSocketCreate(JNIEnv *env,
|
|
1483 |
jobject this) {
|
|
1484 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
1485 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
1486 |
|
|
1487 |
int fd, fd1;
|
|
1488 |
int t = TRUE;
|
|
1489 |
DWORD x1, x2; /* ignored result codes */
|
|
1490 |
int ipv6_supported = ipv6_available();
|
|
1491 |
|
|
1492 |
int arg = -1;
|
|
1493 |
|
|
1494 |
if (IS_NULL(fdObj) || (ipv6_supported && IS_NULL(fd1Obj))) {
|
|
1495 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Socket closed");
|
|
1496 |
return;
|
|
1497 |
} else {
|
|
1498 |
fd = (int) socket (AF_INET, SOCK_DGRAM, 0);
|
|
1499 |
}
|
|
1500 |
if (fd == JVM_IO_ERR) {
|
|
1501 |
NET_ThrowCurrent(env, "Socket creation failed");
|
|
1502 |
return;
|
|
1503 |
}
|
|
1504 |
SetHandleInformation((HANDLE)(UINT_PTR)fd, HANDLE_FLAG_INHERIT, FALSE);
|
|
1505 |
(*env)->SetIntField(env, fdObj, IO_fd_fdID, fd);
|
|
1506 |
NET_SetSockOpt(fd, SOL_SOCKET, SO_BROADCAST, (char*)&t, sizeof(BOOL));
|
|
1507 |
|
|
1508 |
if (ipv6_supported) {
|
|
1509 |
/* SIO_UDP_CONNRESET fixes a bug introduced in Windows 2000, which
|
|
1510 |
* returns connection reset errors un connected UDP sockets (as well
|
|
1511 |
* as connected sockets. The solution is to only enable this feature
|
|
1512 |
* when the socket is connected
|
|
1513 |
*/
|
|
1514 |
t = FALSE;
|
|
1515 |
WSAIoctl(fd,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0);
|
|
1516 |
t = TRUE;
|
|
1517 |
fd1 = socket (AF_INET6, SOCK_DGRAM, 0);
|
|
1518 |
if (fd1 == JVM_IO_ERR) {
|
|
1519 |
NET_ThrowCurrent(env, "Socket creation failed");
|
|
1520 |
return;
|
|
1521 |
}
|
|
1522 |
NET_SetSockOpt(fd1, SOL_SOCKET, SO_BROADCAST, (char*)&t, sizeof(BOOL));
|
|
1523 |
t = FALSE;
|
|
1524 |
WSAIoctl(fd1,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0);
|
|
1525 |
(*env)->SetIntField(env, fd1Obj, IO_fd_fdID, fd1);
|
|
1526 |
SetHandleInformation((HANDLE)(UINT_PTR)fd1, HANDLE_FLAG_INHERIT, FALSE);
|
|
1527 |
} else {
|
|
1528 |
/* drop the second fd */
|
|
1529 |
(*env)->SetObjectField(env, this, pdsi_fd1ID, NULL);
|
|
1530 |
}
|
|
1531 |
}
|
|
1532 |
|
|
1533 |
/*
|
|
1534 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
1535 |
* Method: datagramSocketClose
|
|
1536 |
* Signature: ()V
|
|
1537 |
*/
|
|
1538 |
JNIEXPORT void JNICALL
|
|
1539 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_datagramSocketClose(JNIEnv *env,
|
|
1540 |
jobject this) {
|
|
1541 |
/*
|
|
1542 |
* REMIND: PUT A LOCK AROUND THIS CODE
|
|
1543 |
*/
|
|
1544 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
1545 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
1546 |
int ipv6_supported = ipv6_available();
|
|
1547 |
int fd=-1, fd1=-1;
|
|
1548 |
|
|
1549 |
if (IS_NULL(fdObj) && (!ipv6_supported || IS_NULL(fd1Obj))) {
|
|
1550 |
return;
|
|
1551 |
}
|
|
1552 |
|
|
1553 |
if (!IS_NULL(fdObj)) {
|
|
1554 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
1555 |
if (fd != -1) {
|
|
1556 |
(*env)->SetIntField(env, fdObj, IO_fd_fdID, -1);
|
|
1557 |
NET_SocketClose(fd);
|
|
1558 |
}
|
|
1559 |
}
|
|
1560 |
|
|
1561 |
if (ipv6_supported && fd1Obj != NULL) {
|
|
1562 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
1563 |
if (fd1 == -1) {
|
|
1564 |
return;
|
|
1565 |
}
|
|
1566 |
(*env)->SetIntField(env, fd1Obj, IO_fd_fdID, -1);
|
|
1567 |
NET_SocketClose(fd1);
|
|
1568 |
}
|
|
1569 |
}
|
|
1570 |
|
|
1571 |
/*
|
|
1572 |
* check the addresses attached to the NetworkInterface object
|
|
1573 |
* and return the first one (of the requested family Ipv4 or Ipv6)
|
|
1574 |
* in *iaddr
|
|
1575 |
*/
|
|
1576 |
|
|
1577 |
static int getInetAddrFromIf (JNIEnv *env, int family, jobject nif, jobject *iaddr)
|
|
1578 |
{
|
|
1579 |
jobjectArray addrArray;
|
|
1580 |
static jfieldID ni_addrsID=0;
|
|
1581 |
static jfieldID ia_familyID=0;
|
|
1582 |
jsize len;
|
|
1583 |
jobject addr;
|
|
1584 |
int i;
|
|
1585 |
|
|
1586 |
if (ni_addrsID == NULL) {
|
|
1587 |
jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");
|
|
1588 |
CHECK_NULL_RETURN (c, -1);
|
|
1589 |
ni_addrsID = (*env)->GetFieldID(env, c, "addrs",
|
|
1590 |
"[Ljava/net/InetAddress;");
|
|
1591 |
CHECK_NULL_RETURN (ni_addrsID, -1);
|
|
1592 |
c = (*env)->FindClass(env,"java/net/InetAddress");
|
|
1593 |
CHECK_NULL_RETURN (c, -1);
|
|
1594 |
ia_familyID = (*env)->GetFieldID(env, c, "family", "I");
|
|
1595 |
CHECK_NULL_RETURN (ia_familyID, -1);
|
|
1596 |
}
|
|
1597 |
|
|
1598 |
addrArray = (*env)->GetObjectField(env, nif, ni_addrsID);
|
|
1599 |
len = (*env)->GetArrayLength(env, addrArray);
|
|
1600 |
|
|
1601 |
/*
|
|
1602 |
* Check that there is at least one address bound to this
|
|
1603 |
* interface.
|
|
1604 |
*/
|
|
1605 |
if (len < 1) {
|
|
1606 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1607 |
"bad argument for IP_MULTICAST_IF2: No IP addresses bound to interface");
|
|
1608 |
return -1;
|
|
1609 |
}
|
|
1610 |
for (i=0; i<len; i++) {
|
|
1611 |
int fam;
|
|
1612 |
addr = (*env)->GetObjectArrayElement(env, addrArray, i);
|
|
1613 |
fam = (*env)->GetIntField(env, addr, ia_familyID);
|
|
1614 |
if (fam == family) {
|
|
1615 |
*iaddr = addr;
|
|
1616 |
return 0;
|
|
1617 |
}
|
|
1618 |
}
|
|
1619 |
return -1;
|
|
1620 |
}
|
|
1621 |
|
|
1622 |
static int getInet4AddrFromIf (JNIEnv *env, jobject nif, struct in_addr *iaddr)
|
|
1623 |
{
|
|
1624 |
jobject addr;
|
|
1625 |
static jfieldID ia_addressID;
|
|
1626 |
|
|
1627 |
int ret = getInetAddrFromIf (env, IPv4, nif, &addr);
|
|
1628 |
if (ret == -1) {
|
|
1629 |
return -1;
|
|
1630 |
}
|
|
1631 |
|
|
1632 |
if (ia_addressID == 0) {
|
|
1633 |
jclass c = (*env)->FindClass(env,"java/net/InetAddress");
|
|
1634 |
CHECK_NULL_RETURN (c, -1);
|
|
1635 |
ia_addressID = (*env)->GetFieldID(env, c, "address", "I");
|
|
1636 |
CHECK_NULL_RETURN (ia_addressID, -1);
|
|
1637 |
}
|
|
1638 |
iaddr->s_addr = htonl((*env)->GetIntField(env, addr, ia_addressID));
|
|
1639 |
return 0;
|
|
1640 |
}
|
|
1641 |
|
|
1642 |
/* Get the multicasting index from the interface */
|
|
1643 |
|
|
1644 |
static int getIndexFromIf (JNIEnv *env, jobject nif) {
|
|
1645 |
static jfieldID ni_indexID;
|
|
1646 |
|
|
1647 |
if (ni_indexID == NULL) {
|
|
1648 |
jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");
|
|
1649 |
CHECK_NULL_RETURN(c, -1);
|
|
1650 |
ni_indexID = (*env)->GetFieldID(env, c, "index", "I");
|
|
1651 |
CHECK_NULL_RETURN(ni_indexID, -1);
|
|
1652 |
}
|
|
1653 |
|
|
1654 |
return (*env)->GetIntField(env, nif, ni_indexID);
|
|
1655 |
}
|
|
1656 |
|
|
1657 |
/*
|
|
1658 |
* Sets the multicast interface.
|
|
1659 |
*
|
|
1660 |
* SocketOptions.IP_MULTICAST_IF (argument is an InetAddress) :-
|
|
1661 |
* IPv4: set outgoing multicast interface using
|
|
1662 |
* IPPROTO_IP/IP_MULTICAST_IF
|
|
1663 |
*
|
|
1664 |
* IPv6: Get the interface to which the
|
|
1665 |
* InetAddress is bound
|
|
1666 |
* and do same as SockOptions.IF_MULTICAST_IF2
|
|
1667 |
*
|
|
1668 |
* SockOptions.IF_MULTICAST_IF2 (argument is a NetworkInterface ) :-
|
|
1669 |
* For each stack:
|
|
1670 |
* IPv4: Obtain IP address bound to network interface
|
|
1671 |
* (NetworkInterface.addres[0])
|
|
1672 |
* set outgoing multicast interface using
|
|
1673 |
* IPPROTO_IP/IP_MULTICAST_IF
|
|
1674 |
*
|
|
1675 |
* IPv6: Obtain NetworkInterface.index
|
|
1676 |
* Set outgoing multicast interface using
|
|
1677 |
* IPPROTO_IPV6/IPV6_MULTICAST_IF
|
|
1678 |
*
|
|
1679 |
*/
|
|
1680 |
static void setMulticastInterface(JNIEnv *env, jobject this, int fd, int fd1,
|
|
1681 |
jint opt, jobject value)
|
|
1682 |
{
|
|
1683 |
int ipv6_supported = ipv6_available();
|
|
1684 |
|
|
1685 |
if (opt == java_net_SocketOptions_IP_MULTICAST_IF) {
|
|
1686 |
/*
|
|
1687 |
* value is an InetAddress.
|
|
1688 |
* On IPv4 system use IP_MULTICAST_IF socket option
|
|
1689 |
* On IPv6 system get the NetworkInterface that this IP
|
|
1690 |
* address is bound to and use the IPV6_MULTICAST_IF
|
|
1691 |
* option instead of IP_MULTICAST_IF
|
|
1692 |
*/
|
|
1693 |
if (ipv6_supported) {
|
|
1694 |
static jclass ni_class;
|
|
1695 |
if (ni_class == NULL) {
|
|
1696 |
jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");
|
|
1697 |
CHECK_NULL(c);
|
|
1698 |
ni_class = (*env)->NewGlobalRef(env, c);
|
|
1699 |
CHECK_NULL(ni_class);
|
|
1700 |
}
|
|
1701 |
|
|
1702 |
value = Java_java_net_NetworkInterface_getByInetAddress0(env, ni_class, value);
|
|
1703 |
if (value == NULL) {
|
|
1704 |
if (!(*env)->ExceptionOccurred(env)) {
|
|
1705 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1706 |
"bad argument for IP_MULTICAST_IF"
|
|
1707 |
": address not bound to any interface");
|
|
1708 |
}
|
|
1709 |
return;
|
|
1710 |
}
|
|
1711 |
opt = java_net_SocketOptions_IP_MULTICAST_IF2;
|
|
1712 |
} else {
|
|
1713 |
static jfieldID ia_addressID;
|
|
1714 |
struct in_addr in;
|
|
1715 |
|
|
1716 |
if (ia_addressID == NULL) {
|
|
1717 |
jclass c = (*env)->FindClass(env,"java/net/InetAddress");
|
|
1718 |
CHECK_NULL(c);
|
|
1719 |
ia_addressID = (*env)->GetFieldID(env, c, "address", "I");
|
|
1720 |
CHECK_NULL(ia_addressID);
|
|
1721 |
}
|
|
1722 |
|
|
1723 |
in.s_addr = htonl((*env)->GetIntField(env, value, ia_addressID));
|
|
1724 |
|
|
1725 |
if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
|
|
1726 |
(const char*)&in, sizeof(in)) < 0) {
|
|
1727 |
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
|
|
1728 |
"Error setting socket option");
|
|
1729 |
}
|
|
1730 |
return;
|
|
1731 |
}
|
|
1732 |
}
|
|
1733 |
|
|
1734 |
if (opt == java_net_SocketOptions_IP_MULTICAST_IF2) {
|
|
1735 |
/*
|
|
1736 |
* value is a NetworkInterface.
|
|
1737 |
* On IPv6 system get the index of the interface and use the
|
|
1738 |
* IPV6_MULTICAST_IF socket option
|
|
1739 |
* On IPv4 system extract addr[0] and use the IP_MULTICAST_IF
|
|
1740 |
* option. For IPv6 both must be done.
|
|
1741 |
*/
|
|
1742 |
if (ipv6_supported) {
|
|
1743 |
static jfieldID ni_indexID;
|
|
1744 |
struct in_addr in;
|
|
1745 |
int index;
|
|
1746 |
|
|
1747 |
if (ni_indexID == NULL) {
|
|
1748 |
jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");
|
|
1749 |
CHECK_NULL(c);
|
|
1750 |
ni_indexID = (*env)->GetFieldID(env, c, "index", "I");
|
|
1751 |
CHECK_NULL(ni_indexID);
|
|
1752 |
}
|
|
1753 |
index = (*env)->GetIntField(env, value, ni_indexID);
|
|
1754 |
|
|
1755 |
if (setsockopt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_IF,
|
|
1756 |
(const char*)&index, sizeof(index)) < 0) {
|
|
1757 |
if (errno == EINVAL && index > 0) {
|
|
1758 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1759 |
"IPV6_MULTICAST_IF failed (interface has IPv4 "
|
|
1760 |
"address only?)");
|
|
1761 |
} else {
|
|
1762 |
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
|
|
1763 |
"Error setting socket option");
|
|
1764 |
}
|
|
1765 |
return;
|
|
1766 |
}
|
|
1767 |
|
|
1768 |
/* If there are any IPv4 addresses on this interface then
|
|
1769 |
* repeat the operation on the IPv4 fd */
|
|
1770 |
|
|
1771 |
if (getInet4AddrFromIf (env, value, &in) < 0) {
|
|
1772 |
return;
|
|
1773 |
}
|
|
1774 |
if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
|
|
1775 |
(const char*)&in, sizeof(in)) < 0) {
|
|
1776 |
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
|
|
1777 |
"Error setting socket option");
|
|
1778 |
}
|
|
1779 |
return;
|
|
1780 |
} else {
|
|
1781 |
struct in_addr in;
|
|
1782 |
|
|
1783 |
if (getInet4AddrFromIf (env, value, &in) < 0) {
|
|
1784 |
if ((*env)->ExceptionOccurred(env)) {
|
|
1785 |
return;
|
|
1786 |
}
|
|
1787 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1788 |
"no InetAddress instances of requested type");
|
|
1789 |
return;
|
|
1790 |
}
|
|
1791 |
|
|
1792 |
if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
|
|
1793 |
(const char*)&in, sizeof(in)) < 0) {
|
|
1794 |
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
|
|
1795 |
"Error setting socket option");
|
|
1796 |
}
|
|
1797 |
return;
|
|
1798 |
}
|
|
1799 |
}
|
|
1800 |
}
|
|
1801 |
|
|
1802 |
/*
|
|
1803 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
1804 |
* Method: socketSetOption
|
|
1805 |
* Signature: (ILjava/lang/Object;)V
|
|
1806 |
*/
|
|
1807 |
JNIEXPORT void JNICALL
|
|
1808 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_socketSetOption(JNIEnv *env,jobject this,
|
|
1809 |
jint opt,jobject value) {
|
|
1810 |
|
|
1811 |
int fd=-1, fd1=-1;
|
|
1812 |
int levelv4, levelv6, optnamev4, optnamev6, optlen;
|
|
1813 |
union {
|
|
1814 |
int i;
|
|
1815 |
char c;
|
|
1816 |
} optval;
|
|
1817 |
int ipv6_supported = ipv6_available();
|
|
1818 |
|
|
1819 |
fd = getFD(env, this);
|
|
1820 |
|
|
1821 |
if (ipv6_supported) {
|
|
1822 |
fd1 = getFD1(env, this);
|
|
1823 |
}
|
|
1824 |
if (fd < 0 && fd1 < 0) {
|
|
1825 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed");
|
|
1826 |
return;
|
|
1827 |
}
|
|
1828 |
|
|
1829 |
if ((opt == java_net_SocketOptions_IP_MULTICAST_IF) ||
|
|
1830 |
(opt == java_net_SocketOptions_IP_MULTICAST_IF2)) {
|
|
1831 |
|
|
1832 |
setMulticastInterface(env, this, fd, fd1, opt, value);
|
|
1833 |
return;
|
|
1834 |
}
|
|
1835 |
|
|
1836 |
/*
|
|
1837 |
* Map the Java level socket option to the platform specific
|
|
1838 |
* level(s) and option name(s).
|
|
1839 |
*/
|
|
1840 |
if (fd1 != -1) {
|
|
1841 |
if (NET_MapSocketOptionV6(opt, &levelv6, &optnamev6)) {
|
|
1842 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option");
|
|
1843 |
return;
|
|
1844 |
}
|
|
1845 |
}
|
|
1846 |
if (fd != -1) {
|
|
1847 |
if (NET_MapSocketOption(opt, &levelv4, &optnamev4)) {
|
|
1848 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option");
|
|
1849 |
return;
|
|
1850 |
}
|
|
1851 |
}
|
|
1852 |
|
|
1853 |
switch (opt) {
|
|
1854 |
case java_net_SocketOptions_SO_SNDBUF :
|
|
1855 |
case java_net_SocketOptions_SO_RCVBUF :
|
|
1856 |
case java_net_SocketOptions_IP_TOS :
|
|
1857 |
{
|
|
1858 |
jclass cls;
|
|
1859 |
jfieldID fid;
|
|
1860 |
|
|
1861 |
cls = (*env)->FindClass(env, "java/lang/Integer");
|
|
1862 |
CHECK_NULL(cls);
|
|
1863 |
fid = (*env)->GetFieldID(env, cls, "value", "I");
|
|
1864 |
CHECK_NULL(fid);
|
|
1865 |
|
|
1866 |
optval.i = (*env)->GetIntField(env, value, fid);
|
|
1867 |
optlen = sizeof(optval.i);
|
|
1868 |
}
|
|
1869 |
break;
|
|
1870 |
|
|
1871 |
case java_net_SocketOptions_SO_REUSEADDR:
|
|
1872 |
case java_net_SocketOptions_SO_BROADCAST:
|
|
1873 |
case java_net_SocketOptions_IP_MULTICAST_LOOP:
|
|
1874 |
{
|
|
1875 |
jclass cls;
|
|
1876 |
jfieldID fid;
|
|
1877 |
jboolean on;
|
|
1878 |
|
|
1879 |
cls = (*env)->FindClass(env, "java/lang/Boolean");
|
|
1880 |
CHECK_NULL(cls);
|
|
1881 |
fid = (*env)->GetFieldID(env, cls, "value", "Z");
|
|
1882 |
CHECK_NULL(fid);
|
|
1883 |
|
|
1884 |
on = (*env)->GetBooleanField(env, value, fid);
|
|
1885 |
optval.i = (on ? 1 : 0);
|
|
1886 |
/*
|
|
1887 |
* setLoopbackMode (true) disables IP_MULTICAST_LOOP rather
|
|
1888 |
* than enabling it.
|
|
1889 |
*/
|
|
1890 |
if (opt == java_net_SocketOptions_IP_MULTICAST_LOOP) {
|
|
1891 |
optval.i = !optval.i;
|
|
1892 |
}
|
|
1893 |
optlen = sizeof(optval.i);
|
|
1894 |
}
|
|
1895 |
break;
|
|
1896 |
|
|
1897 |
default :
|
|
1898 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
1899 |
"Socket option not supported by PlainDatagramSocketImp");
|
|
1900 |
break;
|
|
1901 |
|
|
1902 |
}
|
|
1903 |
|
|
1904 |
if (fd1 != -1) {
|
|
1905 |
if (NET_SetSockOpt(fd1, levelv6, optnamev6, (void *)&optval, optlen) < 0) {
|
|
1906 |
NET_ThrowCurrent(env, "setsockopt IPv6");
|
|
1907 |
return;
|
|
1908 |
}
|
|
1909 |
}
|
|
1910 |
if (fd != -1) {
|
|
1911 |
if (NET_SetSockOpt(fd, levelv4, optnamev4, (void *)&optval, optlen) < 0) {
|
|
1912 |
NET_ThrowCurrent(env, "setsockopt");
|
|
1913 |
return;
|
|
1914 |
}
|
|
1915 |
}
|
|
1916 |
}
|
|
1917 |
|
|
1918 |
/*
|
|
1919 |
* Return the multicast interface:
|
|
1920 |
*
|
|
1921 |
* SocketOptions.IP_MULTICAST_IF
|
|
1922 |
* IPv4: Query IPPROTO_IP/IP_MULTICAST_IF
|
|
1923 |
* Create InetAddress
|
|
1924 |
* IP_MULTICAST_IF returns struct ip_mreqn on 2.2
|
|
1925 |
* kernel but struct in_addr on 2.4 kernel
|
|
1926 |
* IPv6: Query IPPROTO_IPV6 / IPV6_MULTICAST_IF or
|
|
1927 |
* obtain from impl is Linux 2.2 kernel
|
|
1928 |
* If index == 0 return InetAddress representing
|
|
1929 |
* anyLocalAddress.
|
|
1930 |
* If index > 0 query NetworkInterface by index
|
|
1931 |
* and returns addrs[0]
|
|
1932 |
*
|
|
1933 |
* SocketOptions.IP_MULTICAST_IF2
|
|
1934 |
* IPv4: Query IPPROTO_IP/IP_MULTICAST_IF
|
|
1935 |
* Query NetworkInterface by IP address and
|
|
1936 |
* return the NetworkInterface that the address
|
|
1937 |
* is bound too.
|
|
1938 |
* IPv6: Query IPPROTO_IPV6 / IPV6_MULTICAST_IF
|
|
1939 |
* (except Linux .2 kernel)
|
|
1940 |
* Query NetworkInterface by index and
|
|
1941 |
* return NetworkInterface.
|
|
1942 |
*/
|
|
1943 |
jobject getMulticastInterface(JNIEnv *env, jobject this, int fd, int fd1, jint opt) {
|
|
1944 |
jboolean isIPV4 = !ipv6_available() || fd1 == -1;
|
|
1945 |
|
|
1946 |
/*
|
|
1947 |
* IPv4 implementation
|
|
1948 |
*/
|
|
1949 |
if (isIPV4) {
|
|
1950 |
static jclass inet4_class;
|
|
1951 |
static jmethodID inet4_ctrID;
|
|
1952 |
static jfieldID inet4_addrID;
|
|
1953 |
|
|
1954 |
static jclass ni_class;
|
|
1955 |
static jmethodID ni_ctrID;
|
|
1956 |
static jfieldID ni_indexID;
|
|
1957 |
static jfieldID ni_addrsID;
|
|
1958 |
|
|
1959 |
jobjectArray addrArray;
|
|
1960 |
jobject addr;
|
|
1961 |
jobject ni;
|
|
1962 |
|
|
1963 |
struct in_addr in;
|
|
1964 |
struct in_addr *inP = ∈
|
|
1965 |
int len = sizeof(struct in_addr);
|
|
1966 |
|
|
1967 |
if (getsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
|
|
1968 |
(char *)inP, &len) < 0) {
|
|
1969 |
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
|
|
1970 |
"Error getting socket option");
|
|
1971 |
return NULL;
|
|
1972 |
}
|
|
1973 |
|
|
1974 |
/*
|
|
1975 |
* Construct and populate an Inet4Address
|
|
1976 |
*/
|
|
1977 |
if (inet4_class == NULL) {
|
|
1978 |
jclass c = (*env)->FindClass(env, "java/net/Inet4Address");
|
|
1979 |
CHECK_NULL_RETURN(c, NULL);
|
|
1980 |
inet4_ctrID = (*env)->GetMethodID(env, c, "<init>", "()V");
|
|
1981 |
CHECK_NULL_RETURN(inet4_ctrID, NULL);
|
|
1982 |
inet4_addrID = (*env)->GetFieldID(env, c, "address", "I");
|
|
1983 |
CHECK_NULL_RETURN(inet4_addrID, NULL);
|
|
1984 |
inet4_class = (*env)->NewGlobalRef(env, c);
|
|
1985 |
CHECK_NULL_RETURN(inet4_class, NULL);
|
|
1986 |
}
|
|
1987 |
addr = (*env)->NewObject(env, inet4_class, inet4_ctrID, 0);
|
|
1988 |
CHECK_NULL_RETURN(addr, NULL);
|
|
1989 |
|
|
1990 |
(*env)->SetIntField(env, addr, inet4_addrID, ntohl(in.s_addr));
|
|
1991 |
|
|
1992 |
/*
|
|
1993 |
* For IP_MULTICAST_IF return InetAddress
|
|
1994 |
*/
|
|
1995 |
if (opt == java_net_SocketOptions_IP_MULTICAST_IF) {
|
|
1996 |
return addr;
|
|
1997 |
}
|
|
1998 |
|
|
1999 |
/*
|
|
2000 |
* For IP_MULTICAST_IF2 we get the NetworkInterface for
|
|
2001 |
* this address and return it
|
|
2002 |
*/
|
|
2003 |
if (ni_class == NULL) {
|
|
2004 |
jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");
|
|
2005 |
CHECK_NULL_RETURN(c, NULL);
|
|
2006 |
ni_ctrID = (*env)->GetMethodID(env, c, "<init>", "()V");
|
|
2007 |
CHECK_NULL_RETURN(ni_ctrID, NULL);
|
|
2008 |
ni_indexID = (*env)->GetFieldID(env, c, "index", "I");
|
|
2009 |
CHECK_NULL_RETURN(ni_indexID, NULL);
|
|
2010 |
ni_addrsID = (*env)->GetFieldID(env, c, "addrs",
|
|
2011 |
"[Ljava/net/InetAddress;");
|
|
2012 |
CHECK_NULL_RETURN(ni_addrsID, NULL);
|
|
2013 |
ni_class = (*env)->NewGlobalRef(env, c);
|
|
2014 |
CHECK_NULL_RETURN(ni_class, NULL);
|
|
2015 |
}
|
|
2016 |
ni = Java_java_net_NetworkInterface_getByInetAddress0(env, ni_class, addr);
|
|
2017 |
if (ni) {
|
|
2018 |
return ni;
|
|
2019 |
}
|
|
2020 |
|
|
2021 |
/*
|
|
2022 |
* The address doesn't appear to be bound at any known
|
|
2023 |
* NetworkInterface. Therefore we construct a NetworkInterface
|
|
2024 |
* with this address.
|
|
2025 |
*/
|
|
2026 |
ni = (*env)->NewObject(env, ni_class, ni_ctrID, 0);
|
|
2027 |
CHECK_NULL_RETURN(ni, NULL);
|
|
2028 |
|
|
2029 |
(*env)->SetIntField(env, ni, ni_indexID, -1);
|
|
2030 |
addrArray = (*env)->NewObjectArray(env, 1, inet4_class, NULL);
|
|
2031 |
CHECK_NULL_RETURN(addrArray, NULL);
|
|
2032 |
(*env)->SetObjectArrayElement(env, addrArray, 0, addr);
|
|
2033 |
(*env)->SetObjectField(env, ni, ni_addrsID, addrArray);
|
|
2034 |
return ni;
|
|
2035 |
}
|
|
2036 |
|
|
2037 |
|
|
2038 |
/*
|
|
2039 |
* IPv6 implementation
|
|
2040 |
*/
|
|
2041 |
if ((opt == java_net_SocketOptions_IP_MULTICAST_IF) ||
|
|
2042 |
(opt == java_net_SocketOptions_IP_MULTICAST_IF2)) {
|
|
2043 |
|
|
2044 |
static jclass ni_class;
|
|
2045 |
static jmethodID ni_ctrID;
|
|
2046 |
static jfieldID ni_indexID;
|
|
2047 |
static jfieldID ni_addrsID;
|
|
2048 |
static jclass ia_class;
|
|
2049 |
static jmethodID ia_anyLocalAddressID;
|
|
2050 |
|
|
2051 |
int index;
|
|
2052 |
int len = sizeof(index);
|
|
2053 |
|
|
2054 |
jobjectArray addrArray;
|
|
2055 |
jobject addr;
|
|
2056 |
jobject ni;
|
|
2057 |
|
|
2058 |
{
|
|
2059 |
if (getsockopt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_IF,
|
|
2060 |
(char*)&index, &len) < 0) {
|
|
2061 |
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
|
|
2062 |
"Error getting socket option");
|
|
2063 |
return NULL;
|
|
2064 |
}
|
|
2065 |
}
|
|
2066 |
|
|
2067 |
if (ni_class == NULL) {
|
|
2068 |
jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");
|
|
2069 |
CHECK_NULL_RETURN(c, NULL);
|
|
2070 |
ni_ctrID = (*env)->GetMethodID(env, c, "<init>", "()V");
|
|
2071 |
CHECK_NULL_RETURN(ni_ctrID, NULL);
|
|
2072 |
ni_indexID = (*env)->GetFieldID(env, c, "index", "I");
|
|
2073 |
CHECK_NULL_RETURN(ni_indexID, NULL);
|
|
2074 |
ni_addrsID = (*env)->GetFieldID(env, c, "addrs",
|
|
2075 |
"[Ljava/net/InetAddress;");
|
|
2076 |
CHECK_NULL_RETURN(ni_addrsID, NULL);
|
|
2077 |
|
|
2078 |
ia_class = (*env)->FindClass(env, "java/net/InetAddress");
|
|
2079 |
CHECK_NULL_RETURN(ia_class, NULL);
|
|
2080 |
ia_class = (*env)->NewGlobalRef(env, ia_class);
|
|
2081 |
CHECK_NULL_RETURN(ia_class, NULL);
|
|
2082 |
ia_anyLocalAddressID = (*env)->GetStaticMethodID(env,
|
|
2083 |
ia_class,
|
|
2084 |
"anyLocalAddress",
|
|
2085 |
"()Ljava/net/InetAddress;");
|
|
2086 |
CHECK_NULL_RETURN(ia_anyLocalAddressID, NULL);
|
|
2087 |
ni_class = (*env)->NewGlobalRef(env, c);
|
|
2088 |
CHECK_NULL_RETURN(ni_class, NULL);
|
|
2089 |
}
|
|
2090 |
|
|
2091 |
/*
|
|
2092 |
* If multicast to a specific interface then return the
|
|
2093 |
* interface (for IF2) or the any address on that interface
|
|
2094 |
* (for IF).
|
|
2095 |
*/
|
|
2096 |
if (index > 0) {
|
|
2097 |
ni = Java_java_net_NetworkInterface_getByIndex(env, ni_class,
|
|
2098 |
index);
|
|
2099 |
if (ni == NULL) {
|
|
2100 |
char errmsg[255];
|
|
2101 |
sprintf(errmsg,
|
|
2102 |
"IPV6_MULTICAST_IF returned index to unrecognized interface: %d",
|
|
2103 |
index);
|
|
2104 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", errmsg);
|
|
2105 |
return NULL;
|
|
2106 |
}
|
|
2107 |
|
|
2108 |
/*
|
|
2109 |
* For IP_MULTICAST_IF2 return the NetworkInterface
|
|
2110 |
*/
|
|
2111 |
if (opt == java_net_SocketOptions_IP_MULTICAST_IF2) {
|
|
2112 |
return ni;
|
|
2113 |
}
|
|
2114 |
|
|
2115 |
/*
|
|
2116 |
* For IP_MULTICAST_IF return addrs[0]
|
|
2117 |
*/
|
|
2118 |
addrArray = (*env)->GetObjectField(env, ni, ni_addrsID);
|
|
2119 |
if ((*env)->GetArrayLength(env, addrArray) < 1) {
|
|
2120 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2121 |
"IPV6_MULTICAST_IF returned interface without IP bindings");
|
|
2122 |
return NULL;
|
|
2123 |
}
|
|
2124 |
|
|
2125 |
addr = (*env)->GetObjectArrayElement(env, addrArray, 0);
|
|
2126 |
return addr;
|
|
2127 |
}
|
|
2128 |
|
|
2129 |
/*
|
|
2130 |
* Multicast to any address - return anyLocalAddress
|
|
2131 |
* or a NetworkInterface with addrs[0] set to anyLocalAddress
|
|
2132 |
*/
|
|
2133 |
|
|
2134 |
addr = (*env)->CallStaticObjectMethod(env, ia_class, ia_anyLocalAddressID,
|
|
2135 |
NULL);
|
|
2136 |
if (opt == java_net_SocketOptions_IP_MULTICAST_IF) {
|
|
2137 |
return addr;
|
|
2138 |
}
|
|
2139 |
|
|
2140 |
ni = (*env)->NewObject(env, ni_class, ni_ctrID, 0);
|
|
2141 |
CHECK_NULL_RETURN(ni, NULL);
|
|
2142 |
(*env)->SetIntField(env, ni, ni_indexID, -1);
|
|
2143 |
addrArray = (*env)->NewObjectArray(env, 1, ia_class, NULL);
|
|
2144 |
CHECK_NULL_RETURN(addrArray, NULL);
|
|
2145 |
(*env)->SetObjectArrayElement(env, addrArray, 0, addr);
|
|
2146 |
(*env)->SetObjectField(env, ni, ni_addrsID, addrArray);
|
|
2147 |
return ni;
|
|
2148 |
}
|
|
2149 |
return NULL;
|
|
2150 |
}
|
|
2151 |
/*
|
|
2152 |
* Returns relevant info as a jint.
|
|
2153 |
*
|
|
2154 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
2155 |
* Method: socketGetOption
|
|
2156 |
* Signature: (I)Ljava/lang/Object;
|
|
2157 |
*/
|
|
2158 |
JNIEXPORT jobject JNICALL
|
|
2159 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_socketGetOption(JNIEnv *env, jobject this,
|
|
2160 |
jint opt) {
|
|
2161 |
|
|
2162 |
int fd=-1, fd1=-1;
|
|
2163 |
int level, optname, optlen;
|
|
2164 |
union {
|
|
2165 |
int i;
|
|
2166 |
} optval;
|
|
2167 |
int ipv6_supported = ipv6_available();
|
|
2168 |
|
|
2169 |
fd = getFD(env, this);
|
|
2170 |
if (ipv6_supported) {
|
|
2171 |
fd1 = getFD1(env, this);
|
|
2172 |
}
|
|
2173 |
|
|
2174 |
if (fd < 0 && fd1 < 0) {
|
|
2175 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2176 |
"Socket closed");
|
|
2177 |
return NULL;
|
|
2178 |
}
|
|
2179 |
|
|
2180 |
/*
|
|
2181 |
* Handle IP_MULTICAST_IF separately
|
|
2182 |
*/
|
|
2183 |
if (opt == java_net_SocketOptions_IP_MULTICAST_IF ||
|
|
2184 |
opt == java_net_SocketOptions_IP_MULTICAST_IF2) {
|
|
2185 |
return getMulticastInterface(env, this, fd, fd1, opt);
|
|
2186 |
}
|
|
2187 |
|
|
2188 |
if (opt == java_net_SocketOptions_SO_BINDADDR) {
|
|
2189 |
/* find out local IP address */
|
|
2190 |
SOCKETADDRESS him;
|
|
2191 |
int len = 0;
|
|
2192 |
int port;
|
|
2193 |
jobject iaObj;
|
|
2194 |
|
|
2195 |
len = sizeof (struct sockaddr_in);
|
|
2196 |
|
|
2197 |
if (fd == -1) {
|
|
2198 |
fd = fd1; /* must be IPv6 only */
|
|
2199 |
len = sizeof (struct SOCKADDR_IN6);
|
|
2200 |
}
|
|
2201 |
|
|
2202 |
if (getsockname(fd, (struct sockaddr *)&him, &len) == -1) {
|
|
2203 |
NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException",
|
|
2204 |
"Error getting socket name");
|
|
2205 |
return NULL;
|
|
2206 |
}
|
|
2207 |
iaObj = NET_SockaddrToInetAddress(env, (struct sockaddr *)&him, &port);
|
|
2208 |
|
|
2209 |
return iaObj;
|
|
2210 |
}
|
|
2211 |
|
|
2212 |
/*
|
|
2213 |
* Map the Java level socket option to the platform specific
|
|
2214 |
* level and option name.
|
|
2215 |
*/
|
|
2216 |
if (NET_MapSocketOption(opt, &level, &optname)) {
|
|
2217 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option");
|
|
2218 |
return NULL;
|
|
2219 |
}
|
|
2220 |
|
|
2221 |
if (fd == -1) {
|
|
2222 |
if (NET_MapSocketOptionV6(opt, &level, &optname)) {
|
|
2223 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option");
|
|
2224 |
return NULL;
|
|
2225 |
}
|
|
2226 |
fd = fd1; /* must be IPv6 only */
|
|
2227 |
}
|
|
2228 |
|
|
2229 |
optlen = sizeof(optval.i);
|
|
2230 |
if (NET_GetSockOpt(fd, level, optname, (void *)&optval, &optlen) < 0) {
|
|
2231 |
char errmsg[255];
|
|
2232 |
sprintf(errmsg, "error getting socket option: %s\n", strerror(errno));
|
|
2233 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", errmsg);
|
|
2234 |
return NULL;
|
|
2235 |
}
|
|
2236 |
|
|
2237 |
switch (opt) {
|
|
2238 |
case java_net_SocketOptions_SO_BROADCAST:
|
|
2239 |
case java_net_SocketOptions_SO_REUSEADDR:
|
|
2240 |
return createBoolean(env, optval.i);
|
|
2241 |
|
|
2242 |
case java_net_SocketOptions_IP_MULTICAST_LOOP:
|
|
2243 |
/* getLoopbackMode() returns true if IP_MULTICAST_LOOP is disabled */
|
|
2244 |
return createBoolean(env, !optval.i);
|
|
2245 |
|
|
2246 |
case java_net_SocketOptions_SO_SNDBUF:
|
|
2247 |
case java_net_SocketOptions_SO_RCVBUF:
|
|
2248 |
case java_net_SocketOptions_IP_TOS:
|
|
2249 |
return createInteger(env, optval.i);
|
|
2250 |
|
|
2251 |
default :
|
|
2252 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2253 |
"Socket option not supported by TwoStacksPlainDatagramSocketImpl");
|
|
2254 |
return NULL;
|
|
2255 |
|
|
2256 |
}
|
|
2257 |
}
|
|
2258 |
|
|
2259 |
/*
|
|
2260 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
2261 |
* Method: setTimeToLive
|
|
2262 |
* Signature: (I)V
|
|
2263 |
*/
|
|
2264 |
JNIEXPORT void JNICALL
|
|
2265 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_setTimeToLive(JNIEnv *env, jobject this,
|
|
2266 |
jint ttl) {
|
|
2267 |
|
|
2268 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
2269 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
2270 |
int fd = -1, fd1 = -1;
|
|
2271 |
int ittl = (int)ttl;
|
|
2272 |
|
|
2273 |
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
|
|
2274 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2275 |
"Socket closed");
|
|
2276 |
return;
|
|
2277 |
} else {
|
|
2278 |
if (!IS_NULL(fdObj)) {
|
|
2279 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
2280 |
}
|
|
2281 |
if (!IS_NULL(fd1Obj)) {
|
|
2282 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
2283 |
}
|
|
2284 |
}
|
|
2285 |
|
|
2286 |
/* setsockopt to be correct ttl */
|
|
2287 |
if (fd >= 0) {
|
|
2288 |
if (NET_SetSockOpt(fd, IPPROTO_IP, IP_MULTICAST_TTL, (char*)&ittl,
|
|
2289 |
sizeof (ittl)) < 0) {
|
|
2290 |
NET_ThrowCurrent(env, "set IP_MULTICAST_TTL failed");
|
|
2291 |
}
|
|
2292 |
}
|
|
2293 |
|
|
2294 |
if (fd1 >= 0) {
|
|
2295 |
if (NET_SetSockOpt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&ittl,
|
|
2296 |
sizeof(ittl)) <0) {
|
|
2297 |
NET_ThrowCurrent(env, "set IPV6_MULTICAST_HOPS failed");
|
|
2298 |
}
|
|
2299 |
}
|
|
2300 |
}
|
|
2301 |
|
|
2302 |
/*
|
|
2303 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
2304 |
* Method: setTTL
|
|
2305 |
* Signature: (B)V
|
|
2306 |
*/
|
|
2307 |
JNIEXPORT void JNICALL
|
|
2308 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_setTTL(JNIEnv *env, jobject this,
|
|
2309 |
jbyte ttl) {
|
|
2310 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_setTimeToLive(env, this,
|
|
2311 |
(jint)ttl & 0xFF);
|
|
2312 |
}
|
|
2313 |
|
|
2314 |
/*
|
|
2315 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
2316 |
* Method: getTimeToLive
|
|
2317 |
* Signature: ()I
|
|
2318 |
*/
|
|
2319 |
JNIEXPORT jint JNICALL
|
|
2320 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_getTimeToLive(JNIEnv *env, jobject this) {
|
|
2321 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
2322 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
2323 |
int fd = -1, fd1 = -1;
|
|
2324 |
int ttl = 0;
|
|
2325 |
int len = sizeof(ttl);
|
|
2326 |
|
|
2327 |
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
|
|
2328 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2329 |
"Socket closed");
|
|
2330 |
return -1;
|
|
2331 |
} else {
|
|
2332 |
if (!IS_NULL(fdObj)) {
|
|
2333 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
2334 |
}
|
|
2335 |
if (!IS_NULL(fd1Obj)) {
|
|
2336 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
2337 |
}
|
|
2338 |
}
|
|
2339 |
|
|
2340 |
/* getsockopt of ttl */
|
|
2341 |
if (fd >= 0) {
|
|
2342 |
if (NET_GetSockOpt(fd, IPPROTO_IP, IP_MULTICAST_TTL, (char*)&ttl, &len) < 0) {
|
|
2343 |
NET_ThrowCurrent(env, "get IP_MULTICAST_TTL failed");
|
|
2344 |
return -1;
|
|
2345 |
}
|
|
2346 |
return (jint)ttl;
|
|
2347 |
}
|
|
2348 |
if (fd1 >= 0) {
|
|
2349 |
if (NET_GetSockOpt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char*)&ttl, &len) < 0) {
|
|
2350 |
NET_ThrowCurrent(env, "get IP_MULTICAST_TTL failed");
|
|
2351 |
return -1;
|
|
2352 |
}
|
|
2353 |
return (jint)ttl;
|
|
2354 |
}
|
|
2355 |
return -1;
|
|
2356 |
}
|
|
2357 |
|
|
2358 |
/*
|
|
2359 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
2360 |
* Method: getTTL
|
|
2361 |
* Signature: ()B
|
|
2362 |
*/
|
|
2363 |
JNIEXPORT jbyte JNICALL
|
|
2364 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_getTTL(JNIEnv *env, jobject this) {
|
|
2365 |
int result = Java_java_net_TwoStacksPlainDatagramSocketImpl_getTimeToLive(env, this);
|
|
2366 |
|
|
2367 |
return (jbyte)result;
|
|
2368 |
}
|
|
2369 |
|
|
2370 |
/* join/leave the named group on the named interface, or if no interface specified
|
|
2371 |
* then the interface set with setInterfac(), or the default interface otherwise */
|
|
2372 |
|
|
2373 |
static void mcast_join_leave(JNIEnv *env, jobject this,
|
|
2374 |
jobject iaObj, jobject niObj,
|
|
2375 |
jboolean join)
|
|
2376 |
{
|
|
2377 |
jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID);
|
|
2378 |
jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID);
|
|
2379 |
jint fd = -1, fd1 = -1;
|
|
2380 |
|
|
2381 |
SOCKETADDRESS name;
|
|
2382 |
struct ip_mreq mname;
|
|
2383 |
struct ipv6_mreq mname6;
|
|
2384 |
|
|
2385 |
struct in_addr in;
|
|
2386 |
DWORD ifindex;
|
|
2387 |
|
|
2388 |
int len, family;
|
|
2389 |
int ipv6_supported = ipv6_available();
|
|
2390 |
int cmd ;
|
|
2391 |
|
|
2392 |
if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) {
|
|
2393 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2394 |
"Socket closed");
|
|
2395 |
return;
|
|
2396 |
}
|
|
2397 |
if (!IS_NULL(fdObj)) {
|
|
2398 |
fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
|
|
2399 |
}
|
|
2400 |
if (ipv6_supported && !IS_NULL(fd1Obj)) {
|
|
2401 |
fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID);
|
|
2402 |
}
|
|
2403 |
|
|
2404 |
if (IS_NULL(iaObj)) {
|
|
2405 |
JNU_ThrowNullPointerException(env, "address");
|
|
2406 |
return;
|
|
2407 |
}
|
|
2408 |
|
|
2409 |
if (NET_InetAddressToSockaddr(env, iaObj, 0, (struct sockaddr *)&name, &len, JNI_FALSE) != 0) {
|
|
2410 |
return;
|
|
2411 |
}
|
|
2412 |
|
|
2413 |
/* Set the multicast group address in the ip_mreq field
|
|
2414 |
* eventually this check should be done by the security manager
|
|
2415 |
*/
|
|
2416 |
family = name.him.sa_family;
|
|
2417 |
|
|
2418 |
if (family == AF_INET) {
|
|
2419 |
int address = name.him4.sin_addr.s_addr;
|
|
2420 |
if (!IN_MULTICAST(ntohl(address))) {
|
|
2421 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "not in multicast");
|
|
2422 |
return;
|
|
2423 |
}
|
|
2424 |
mname.imr_multiaddr.s_addr = address;
|
|
2425 |
if (fd < 0) {
|
|
2426 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Can't join an IPv4 group on an IPv6 only socket");
|
|
2427 |
return;
|
|
2428 |
}
|
|
2429 |
if (IS_NULL(niObj)) {
|
|
2430 |
len = sizeof (in);
|
|
2431 |
if (NET_GetSockOpt(fd, IPPROTO_IP, IP_MULTICAST_IF,
|
|
2432 |
(char *)&in, &len) < 0) {
|
|
2433 |
NET_ThrowCurrent(env, "get IP_MULTICAST_IF failed");
|
|
2434 |
return;
|
|
2435 |
}
|
|
2436 |
mname.imr_interface.s_addr = in.s_addr;
|
|
2437 |
} else {
|
|
2438 |
if (getInet4AddrFromIf (env, niObj, &mname.imr_interface) != 0) {
|
|
2439 |
NET_ThrowCurrent(env, "no Inet4Address associated with interface");
|
|
2440 |
return;
|
|
2441 |
}
|
|
2442 |
}
|
|
2443 |
|
|
2444 |
cmd = join ? IP_ADD_MEMBERSHIP: IP_DROP_MEMBERSHIP;
|
|
2445 |
|
|
2446 |
/* Join the multicast group */
|
|
2447 |
if (NET_SetSockOpt(fd, IPPROTO_IP, cmd, (char *) &mname, sizeof (mname)) < 0) {
|
|
2448 |
if (WSAGetLastError() == WSAENOBUFS) {
|
|
2449 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2450 |
"IP_ADD_MEMBERSHIP failed (out of hardware filters?)");
|
|
2451 |
} else {
|
|
2452 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException","error setting options");
|
|
2453 |
}
|
|
2454 |
}
|
|
2455 |
} else /* AF_INET6 */ {
|
|
2456 |
if (ipv6_supported) {
|
|
2457 |
struct in6_addr *address;
|
|
2458 |
address = &name.him6.sin6_addr;
|
|
2459 |
if (!IN6_IS_ADDR_MULTICAST(address)) {
|
|
2460 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "not in6 multicast");
|
|
2461 |
return;
|
|
2462 |
}
|
|
2463 |
mname6.ipv6mr_multiaddr = *address;
|
|
2464 |
} else {
|
|
2465 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "IPv6 not supported");
|
|
2466 |
return;
|
|
2467 |
}
|
|
2468 |
if (fd1 < 0) {
|
|
2469 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Can't join an IPv6 group on a IPv4 socket");
|
|
2470 |
return;
|
|
2471 |
}
|
|
2472 |
if (IS_NULL(niObj)) {
|
|
2473 |
len = sizeof (ifindex);
|
|
2474 |
if (NET_GetSockOpt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_IF, &ifindex, &len) < 0) {
|
|
2475 |
NET_ThrowCurrent(env, "get IPV6_MULTICAST_IF failed");
|
|
2476 |
return;
|
|
2477 |
}
|
|
2478 |
} else {
|
|
2479 |
ifindex = getIndexFromIf (env, niObj);
|
|
2480 |
if (ifindex == -1) {
|
|
2481 |
NET_ThrowCurrent(env, "get ifindex failed");
|
|
2482 |
return;
|
|
2483 |
}
|
|
2484 |
}
|
|
2485 |
mname6.ipv6mr_interface = ifindex;
|
|
2486 |
cmd = join ? IPV6_ADD_MEMBERSHIP: IPV6_DROP_MEMBERSHIP;
|
|
2487 |
|
|
2488 |
/* Join the multicast group */
|
|
2489 |
if (NET_SetSockOpt(fd1, IPPROTO_IPV6, cmd, (char *) &mname6, sizeof (mname6)) < 0) {
|
|
2490 |
if (WSAGetLastError() == WSAENOBUFS) {
|
|
2491 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
|
|
2492 |
"IP_ADD_MEMBERSHIP failed (out of hardware filters?)");
|
|
2493 |
} else {
|
|
2494 |
JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException","error setting options");
|
|
2495 |
}
|
|
2496 |
}
|
|
2497 |
}
|
|
2498 |
|
|
2499 |
return;
|
|
2500 |
}
|
|
2501 |
|
|
2502 |
/*
|
|
2503 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
2504 |
* Method: join
|
|
2505 |
* Signature: (Ljava/net/InetAddress;)V
|
|
2506 |
*/
|
|
2507 |
JNIEXPORT void JNICALL
|
|
2508 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_join(JNIEnv *env, jobject this,
|
|
2509 |
jobject iaObj, jobject niObj)
|
|
2510 |
{
|
|
2511 |
mcast_join_leave (env, this, iaObj, niObj, JNI_TRUE);
|
|
2512 |
}
|
|
2513 |
|
|
2514 |
/*
|
|
2515 |
* Class: java_net_TwoStacksPlainDatagramSocketImpl
|
|
2516 |
* Method: leave
|
|
2517 |
* Signature: (Ljava/net/InetAddress;)V
|
|
2518 |
*/
|
|
2519 |
JNIEXPORT void JNICALL
|
|
2520 |
Java_java_net_TwoStacksPlainDatagramSocketImpl_leave(JNIEnv *env, jobject this,
|
|
2521 |
jobject iaObj, jobject niObj)
|
|
2522 |
{
|
|
2523 |
mcast_join_leave (env, this, iaObj, niObj, JNI_FALSE);
|
|
2524 |
}
|