0N/A/*
2362N/A * Copyright (c) 2001, 2008, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A#include "jni.h"
0N/A#include "jni_util.h"
0N/A#include "jvm.h"
0N/A#include "jlong.h"
0N/A
0N/A#include <netdb.h>
0N/A#include <sys/types.h>
0N/A#include <sys/socket.h>
0N/A#include <stdlib.h>
0N/A#include <string.h>
0N/A#include <errno.h>
0N/A
4632N/A#if defined(__linux__) || defined(_ALLBSD_SOURCE)
0N/A#include <netinet/in.h>
0N/A#endif
0N/A
0N/A#include "net_util.h"
0N/A#include "net_util_md.h"
0N/A#include "nio.h"
0N/A#include "nio_util.h"
0N/A
0N/A#include "sun_nio_ch_DatagramChannelImpl.h"
0N/A
0N/Astatic jfieldID dci_senderID; /* sender in sun.nio.ch.DatagramChannelImpl */
0N/Astatic jfieldID dci_senderAddrID; /* sender InetAddress in sun.nio.ch.DatagramChannelImpl */
0N/Astatic jfieldID dci_senderPortID; /* sender port in sun.nio.ch.DatagramChannelImpl */
0N/Astatic jclass isa_class; /* java.net.InetSocketAddress */
0N/Astatic jmethodID isa_ctorID; /* .InetSocketAddress(InetAddress, int) */
0N/A
0N/AJNIEXPORT void JNICALL
0N/AJava_sun_nio_ch_DatagramChannelImpl_initIDs(JNIEnv *env, jclass clazz)
0N/A{
0N/A clazz = (*env)->FindClass(env, "java/net/InetSocketAddress");
0N/A isa_class = (*env)->NewGlobalRef(env, clazz);
0N/A isa_ctorID = (*env)->GetMethodID(env, clazz, "<init>",
0N/A "(Ljava/net/InetAddress;I)V");
0N/A
0N/A clazz = (*env)->FindClass(env, "sun/nio/ch/DatagramChannelImpl");
0N/A dci_senderID = (*env)->GetFieldID(env, clazz, "sender",
0N/A "Ljava/net/SocketAddress;");
0N/A dci_senderAddrID = (*env)->GetFieldID(env, clazz,
0N/A "cachedSenderInetAddress",
0N/A "Ljava/net/InetAddress;");
0N/A dci_senderPortID = (*env)->GetFieldID(env, clazz,
0N/A "cachedSenderPort", "I");
0N/A}
0N/A
0N/AJNIEXPORT void JNICALL
0N/AJava_sun_nio_ch_DatagramChannelImpl_disconnect0(JNIEnv *env, jobject this,
5205N/A jobject fdo, jboolean isIPv6)
0N/A{
0N/A jint fd = fdval(env, fdo);
0N/A int rv;
0N/A
0N/A#ifdef __solaris__
0N/A rv = connect(fd, 0, 0);
0N/A#endif
0N/A
4632N/A#if defined(__linux__) || defined(_ALLBSD_SOURCE)
0N/A {
0N/A int len;
0N/A SOCKADDR sa;
0N/A
0N/A memset(&sa, 0, sizeof(sa));
0N/A
0N/A#ifdef AF_INET6
5205N/A if (isIPv6) {
0N/A struct sockaddr_in6 *him6 = (struct sockaddr_in6 *)&sa;
4632N/A#if defined(_ALLBSD_SOURCE)
4632N/A him6->sin6_family = AF_INET6;
4632N/A#else
0N/A him6->sin6_family = AF_UNSPEC;
4632N/A#endif
0N/A len = sizeof(struct sockaddr_in6);
0N/A } else
0N/A#endif
0N/A {
0N/A struct sockaddr_in *him4 = (struct sockaddr_in*)&sa;
4632N/A#if defined(_ALLBSD_SOURCE)
4632N/A him4->sin_family = AF_INET;
4632N/A#else
0N/A him4->sin_family = AF_UNSPEC;
4632N/A#endif
0N/A len = sizeof(struct sockaddr_in);
0N/A }
0N/A
0N/A rv = connect(fd, (struct sockaddr *)&sa, len);
4632N/A
4632N/A#if defined(_ALLBSD_SOURCE)
4632N/A if (rv < 0 && errno == EADDRNOTAVAIL)
4632N/A rv = errno = 0;
4632N/A#endif
0N/A }
0N/A#endif
0N/A
0N/A if (rv < 0)
0N/A handleSocketError(env, errno);
0N/A
0N/A}
0N/A
0N/AJNIEXPORT jint JNICALL
0N/AJava_sun_nio_ch_DatagramChannelImpl_receive0(JNIEnv *env, jobject this,
0N/A jobject fdo, jlong address,
0N/A jint len, jboolean connected)
0N/A{
0N/A jint fd = fdval(env, fdo);
0N/A void *buf = (void *)jlong_to_ptr(address);
0N/A SOCKADDR sa;
438N/A socklen_t sa_len = SOCKADDR_LEN;
0N/A jboolean retry = JNI_FALSE;
0N/A jint n = 0;
0N/A jobject senderAddr;
0N/A
0N/A if (len > MAX_PACKET_LEN) {
0N/A len = MAX_PACKET_LEN;
0N/A }
0N/A
0N/A do {
0N/A retry = JNI_FALSE;
0N/A n = recvfrom(fd, buf, len, 0, (struct sockaddr *)&sa, &sa_len);
0N/A if (n < 0) {
0N/A if (errno == EWOULDBLOCK) {
0N/A return IOS_UNAVAILABLE;
0N/A }
0N/A if (errno == EINTR) {
0N/A return IOS_INTERRUPTED;
0N/A }
0N/A if (errno == ECONNREFUSED) {
0N/A if (connected == JNI_FALSE) {
0N/A retry = JNI_TRUE;
0N/A } else {
0N/A JNU_ThrowByName(env, JNU_JAVANETPKG
0N/A "PortUnreachableException", 0);
0N/A return IOS_THROWN;
0N/A }
0N/A } else {
0N/A return handleSocketError(env, errno);
0N/A }
0N/A }
0N/A } while (retry == JNI_TRUE);
0N/A
0N/A /*
0N/A * If the source address and port match the cached address
0N/A * and port in DatagramChannelImpl then we don't need to
0N/A * create InetAddress and InetSocketAddress objects.
0N/A */
0N/A senderAddr = (*env)->GetObjectField(env, this, dci_senderAddrID);
0N/A if (senderAddr != NULL) {
0N/A if (!NET_SockaddrEqualsInetAddress(env, (struct sockaddr *)&sa,
0N/A senderAddr)) {
0N/A senderAddr = NULL;
0N/A } else {
0N/A jint port = (*env)->GetIntField(env, this, dci_senderPortID);
0N/A if (port != NET_GetPortFromSockaddr((struct sockaddr *)&sa)) {
0N/A senderAddr = NULL;
0N/A }
0N/A }
0N/A }
0N/A if (senderAddr == NULL) {
0N/A jobject isa = NULL;
0N/A int port;
0N/A jobject ia = NET_SockaddrToInetAddress(env, (struct sockaddr *)&sa,
0N/A &port);
0N/A
0N/A if (ia != NULL) {
0N/A isa = (*env)->NewObject(env, isa_class, isa_ctorID, ia, port);
0N/A }
0N/A
0N/A if (isa == NULL) {
0N/A JNU_ThrowOutOfMemoryError(env, "heap allocation failed");
0N/A return IOS_THROWN;
0N/A }
0N/A
0N/A (*env)->SetObjectField(env, this, dci_senderAddrID, ia);
0N/A (*env)->SetIntField(env, this, dci_senderPortID,
0N/A NET_GetPortFromSockaddr((struct sockaddr *)&sa));
0N/A (*env)->SetObjectField(env, this, dci_senderID, isa);
0N/A }
0N/A return n;
0N/A}
0N/A
0N/AJNIEXPORT jint JNICALL
0N/AJava_sun_nio_ch_DatagramChannelImpl_send0(JNIEnv *env, jobject this,
524N/A jboolean preferIPv6, jobject fdo, jlong address,
5697N/A jint len, jobject destAddress, jint destPort)
0N/A{
0N/A jint fd = fdval(env, fdo);
0N/A void *buf = (void *)jlong_to_ptr(address);
0N/A SOCKADDR sa;
0N/A int sa_len = SOCKADDR_LEN;
0N/A jint n = 0;
0N/A
0N/A if (len > MAX_PACKET_LEN) {
0N/A len = MAX_PACKET_LEN;
0N/A }
0N/A
0N/A if (NET_InetAddressToSockaddr(env, destAddress, destPort,
0N/A (struct sockaddr *)&sa,
524N/A &sa_len, preferIPv6) != 0) {
0N/A return IOS_THROWN;
0N/A }
0N/A
0N/A n = sendto(fd, buf, len, 0, (struct sockaddr *)&sa, sa_len);
0N/A if (n < 0) {
0N/A if (errno == EAGAIN) {
0N/A return IOS_UNAVAILABLE;
0N/A }
0N/A if (errno == EINTR) {
0N/A return IOS_INTERRUPTED;
0N/A }
0N/A if (errno == ECONNREFUSED) {
0N/A JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
0N/A return IOS_THROWN;
0N/A }
0N/A return handleSocketError(env, errno);
0N/A }
0N/A return n;
0N/A}