/*
* Copyright ( c ) 1997 , 2022 , 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 NET_WAIT_READ 0 x01
#define NET_WAIT_WRITE 0 x02
#define NET_WAIT_CONNECT 0 x04
/************************************************************************
* Cached field IDs
*
* The naming convention for field IDs is
* < class abbrv > _ < fieldName > ID
*/
extern jclass ia_class;
extern jfieldID iac_addressID;
extern jfieldID iac_familyID;
extern jfieldID iac_hostNameID;
extern jfieldID iac_origHostNameID;
JNIEXPORT void JNICALL initInetAddressIDs(JNIEnv *env);
/** (Inet6Address accessors)
* set_ methods return JNI_TRUE on success JNI_FALSE on error
* get_ methods that return int / boolean , return - 1 on error
* get_ methods that return objects return NULL on error .
*/
extern jboolean setInet6Address_scopeifname(JNIEnv *env, jobject ia6Obj, jobject scopeifname);
extern unsigned int getInet6Address_scopeid(JNIEnv *env, jobject ia6Obj);
extern jboolean setInet6Address_scopeid(JNIEnv *env, jobject ia6Obj, int scopeid);
extern jboolean getInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *dest);
extern jboolean setInet6Address_ipaddress(JNIEnv *env, jobject ia6Obj, char *address);
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 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;
/* 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_holder6ID;
extern jfieldID ia6_ipaddressID;
extern jfieldID ia6_scopeidID;
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);
JNIEXPORT jint JNICALL ipv4_available();
JNIEXPORT jint JNICALL ipv6_available();
JNIEXPORT jint JNICALL reuseport_available();
/**
* This function will fill a SOCKETADDRESS structure from an InetAddress
* object .
*
* The parameter ' sa ' must point to valid storage of size
* ' sizeof ( SOCKETADDRESS ) ' .
*
* The parameter ' len ' is a pointer to an int and is used for returning
* the actual sockaddr length , e . g . ' sizeof ( struct sockaddr_in ) ' or
* ' sizeof ( struct sockaddr_in6 ) ' .
*
* If the type of the InetAddress object is IPv6 , the function will fill a
* sockaddr_in6 structure . IPv6 must be available in that case , otherwise an
* exception is thrown .
* In the case of an IPv4 InetAddress , when IPv6 is available and
* v4MappedAddress is TRUE , this method will fill a sockaddr_in6 structure
* containing an IPv4 mapped IPv6 address . Otherwise a sockaddr_in
* structure will be filled .
*/
JNIEXPORT int JNICALL
NET_InetAddressToSockaddr(JNIEnv *env, jobject iaObj, int port,
SOCKETADDRESS *sa, int *len,
jboolean v4MappedAddress);
JNIEXPORT jobject JNICALL
NET_SockaddrToInetAddress(JNIEnv *env, SOCKETADDRESS *sa, int *port);
JNIEXPORT jint JNICALL NET_GetPortFromSockaddr(SOCKETADDRESS *sa);
JNIEXPORT jboolean JNICALL
NET_SockaddrEqualsInetAddress(JNIEnv *env, SOCKETADDRESS *sa, 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 system calls , except that they may do some
* platform - specific pre / post processing of the arguments and / or results .
*/
JNIEXPORT int JNICALL
NET_SocketAvailable(int fd, int *pbytes);
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, SOCKETADDRESS *sa, int len);
JNIEXPORT int JNICALL
NET_MapSocketOption(jint cmd, int *level, int *optname);
JNIEXPORT int JNICALL
NET_MapSocketOptionV6(jint cmd, int *level, int *optname);
JNIEXPORT jint JNICALL
NET_EnableFastTcpLoopback(int fd);
unsigned short in_cksum(unsigned short *addr, int len);
jint NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout);
int lookupCharacteristicsToAddressFamily(int characteristics);
int addressesInSystemOrder(int characteristics);
#endif /* NET_UTILS_H */
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