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/*
* Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <stdlib.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#if __linux__
#include <netinet/in.h>
#endif
#if defined(__solaris__) && !defined(_SOCKLEN_T)
typedef size_t socklen_t; /* New in SunOS 5.7, so need this for 5.6 */
#endif
#include "jni.h"
#include "jni_util.h"
#include "net_util.h"
#include "jvm.h"
#include "jlong.h"
#include "sun_nio_ch_ServerSocketChannelImpl.h"
#include "nio.h"
#include "nio_util.h"
#include <nativehelper/JNIHelp.h>
#define NATIVE_METHOD(className, functionName, signature) \
{ #functionName, signature, (void*)(className ## _ ## functionName) }
static jfieldID fd_fdID; /* java.io.FileDescriptor.fd */
static jclass isa_class; /* java.net.InetSocketAddress */
static jmethodID isa_ctorID; /* .InetSocketAddress(InetAddress, int) */
JNIEXPORT void JNICALL
Java_sun_nio_ch_ServerSocketChannelImpl_initIDs(JNIEnv *env, jclass c)
{
jclass cls;
cls = (*env)->FindClass(env, "java/io/FileDescriptor");
CHECK_NULL(cls);
fd_fdID = (*env)->GetFieldID(env, cls, "descriptor", "I");
CHECK_NULL(fd_fdID);
cls = (*env)->FindClass(env, "java/net/InetSocketAddress");
CHECK_NULL(cls);
isa_class = (*env)->NewGlobalRef(env, cls);
if (isa_class == NULL) {
JNU_ThrowOutOfMemoryError(env, NULL);
return;
}
isa_ctorID = (*env)->GetMethodID(env, cls, "<init>",
"(Ljava/net/InetAddress;I)V");
CHECK_NULL(isa_ctorID);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_ServerSocketChannelImpl_accept0(JNIEnv *env, jobject this,
jobject ssfdo, jobject newfdo,
jobjectArray isaa)
{
jint ssfd = (*env)->GetIntField(env, ssfdo, fd_fdID);
jint newfd;
struct sockaddr *sa;
int alloc_len;
jobject remote_ia = 0;
jobject isa;
jint remote_port;
NET_AllocSockaddr(&sa, &alloc_len);
if (sa == NULL) {
JNU_ThrowOutOfMemoryError(env, NULL);
return IOS_THROWN;
}
/*
* accept connection but ignore ECONNABORTED indicating that
* a connection was eagerly accepted but was reset before
* accept() was called.
*/
for (;;) {
socklen_t sa_len = alloc_len;
newfd = accept(ssfd, sa, &sa_len);
if (newfd >= 0) {
break;
}
if (errno != ECONNABORTED) {
break;
}
/* ECONNABORTED => restart accept */
}
if (newfd < 0) {
free((void *)sa);
if (errno == EAGAIN)
return IOS_UNAVAILABLE;
if (errno == EINTR)
return IOS_INTERRUPTED;
JNU_ThrowIOExceptionWithLastError(env, "Accept failed");
return IOS_THROWN;
}
(*env)->SetIntField(env, newfdo, fd_fdID, newfd);
remote_ia = NET_SockaddrToInetAddress(env, sa, (int *)&remote_port);
free((void *)sa);
CHECK_NULL_RETURN(remote_ia, IOS_THROWN);
isa = (*env)->NewObject(env, isa_class, isa_ctorID, remote_ia, remote_port);
CHECK_NULL_RETURN(isa, IOS_THROWN);
(*env)->SetObjectArrayElement(env, isaa, 0, isa);
return 1;
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(Java_sun_nio_ch_ServerSocketChannelImpl, initIDs, "()V"),
NATIVE_METHOD(Java_sun_nio_ch_ServerSocketChannelImpl, accept0,
"(Ljava/io/FileDescriptor;Ljava/io/FileDescriptor;[Ljava/net/InetSocketAddress;)I"),
};
void register_sun_nio_ch_ServerSocketChannelImpl(JNIEnv* env) {
jniRegisterNativeMethods(env, "sun/nio/ch/ServerSocketChannelImpl", gMethods, NELEM(gMethods));
}
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