/*

 * Copyright (c) 1997, 2012, 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.

 */

#ifndef NET_UTILS_H

#define NET_UTILS_H

#include "jvm.h"

#include "jni_util.h"

#include "net_util_md.h"

/************************************************************************

 * Macros and misc constants

 */

#define MAX_PACKET_LEN 65536

#define IPv4 1

#define IPv6 2

#define NET_ERROR(env, ex, msg) \

{ if (!(*env)->ExceptionOccurred(env)) JNU_ThrowByName(env, ex, msg) }

#define CHECK_NULL(x) if ((x) == NULL) return;

#define CHECK_NULL_RETURN(x, y) if ((x) == NULL) return y;

/************************************************************************

 * Cached field IDs

 *

 * The naming convention for field IDs is

 *      <class abbrv>_<fieldName>ID

 * i.e. psi_timeoutID is PlainSocketImpl's timeout field's ID.

 */

extern jclass ia_class;

extern jfieldID iac_addressID;

extern jfieldID iac_familyID;

extern jfieldID iac_hostNameID;

extern jfieldID ia_preferIPv6AddressID;

extern void setInetAddress_addr(JNIEnv *env, jobject iaObj, int address);

extern void setInetAddress_family(JNIEnv *env, jobject iaObj, int family);

extern void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject h);

extern int getInetAddress_addr(JNIEnv *env, jobject iaObj);

extern int getInetAddress_family(JNIEnv *env, jobject iaObj);

extern jobject getInetAddress_hostName(JNIEnv *env, jobject iaObj);

extern jclass ia4_class;

extern jmethodID ia4_ctrID;

/* NetworkInterface fields */

extern jclass ni_class;

extern jfieldID ni_nameID;

extern jfieldID ni_indexID;

extern jfieldID ni_addrsID;

extern jfieldID ni_descID;

extern jmethodID ni_ctrID;

/* PlainSocketImpl fields */

extern jfieldID psi_timeoutID;

extern jfieldID psi_fdID;

extern jfieldID psi_addressID;

extern jfieldID psi_portID;

extern jfieldID psi_localportID;

/* DatagramPacket fields */

extern jfieldID dp_addressID;

extern jfieldID dp_portID;

extern jfieldID dp_bufID;

extern jfieldID dp_offsetID;

extern jfieldID dp_lengthID;

extern jfieldID dp_bufLengthID;

/* Inet6Address fields */

extern jclass ia6_class;

extern jfieldID ia6_ipaddressID;

extern jfieldID ia6_scopeidID;

extern jfieldID ia6_cachedscopeidID;

extern jfieldID ia6_scopeidsetID;

extern jfieldID ia6_scopeifnameID;

extern jmethodID ia6_ctrID;

/************************************************************************

 *  Utilities

 */

JNIEXPORT void JNICALL Java_java_net_InetAddress_init(JNIEnv *env, jclass cls);

JNIEXPORT void JNICALL Java_java_net_Inet4Address_init(JNIEnv *env, jclass cls);

JNIEXPORT void JNICALL Java_java_net_Inet6Address_init(JNIEnv *env, jclass cls);

JNIEXPORT void JNICALL Java_java_net_NetworkInterface_init(JNIEnv *env, jclass cls);

JNIEXPORT void JNICALL NET_ThrowNew(JNIEnv *env, int errorNum, char *msg);

int NET_GetError();

void NET_ThrowCurrent(JNIEnv *env, char *msg);

jfieldID NET_GetFileDescriptorID(JNIEnv *env);

JNIEXPORT jint JNICALL ipv6_available() ;

void

NET_AllocSockaddr(struct sockaddr **him, int *len);

JNIEXPORT int JNICALL

NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port, struct sockaddr *him, int *len, jboolean v4MappedAddress);

JNIEXPORT jobject JNICALL

NET_SockaddrToInetAddress(JNIEnv *env, struct sockaddr *him, int *port);

void initLocalAddrTable ();

void parseExclusiveBindProperty(JNIEnv *env);

void

NET_SetTrafficClass(struct sockaddr *him, int trafficClass);

JNIEXPORT jint JNICALL

NET_GetPortFromSockaddr(struct sockaddr *him);

JNIEXPORT jint JNICALL

NET_SockaddrEqualsInetAddress(JNIEnv *env,struct sockaddr *him, jobject iaObj);

int

NET_IsIPv4Mapped(jbyte* caddr);

int

NET_IPv4MappedToIPv4(jbyte* caddr);

int

NET_IsEqual(jbyte* caddr1, jbyte* caddr2);

int

NET_IsZeroAddr(jbyte* caddr);

/* Socket operations

 *

 * These work just like the JVM_* procedures, except that they may do some

 * platform-specific pre/post processing of the arguments and/or results.

 */

JNIEXPORT int JNICALL

NET_GetSockOpt(int fd, int level, int opt, void *result, int *len);

JNIEXPORT int JNICALL

NET_SetSockOpt(int fd, int level, int opt, const void *arg, int len);

JNIEXPORT int JNICALL

NET_Bind(int fd, struct sockaddr *him, int len);

JNIEXPORT int JNICALL

NET_MapSocketOption(jint cmd, int *level, int *optname);

JNIEXPORT int JNICALL

NET_MapSocketOptionV6(jint cmd, int *level, int *optname);

int getScopeID (struct sockaddr *);

int cmpScopeID (unsigned int, struct sockaddr *);

unsigned short in_cksum(unsigned short *addr, int len);

#endif /* NET_UTILS_H */