/*

 * 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_MD_H

#define NET_UTILS_MD_H

#include <sys/socket.h>

#include <sys/types.h>

#include <netdb.h>

#include <netinet/in.h>

#include <unistd.h>

#ifndef USE_SELECT

#include <sys/poll.h>

#endif

/*

   AIX needs a workaround for I/O cancellation, see:

   http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.aix.basetechref/doc/basetrf1/close.htm

   ...

   The close subroutine is blocked until all subroutines which use the file

   descriptor return to usr space. For example, when a thread is calling close

   and another thread is calling select with the same file descriptor, the

   close subroutine does not return until the select call returns.

   ...

*/

#if defined(__linux__) || defined(MACOSX) || defined (_AIX)

extern int NET_Timeout(int s, long timeout);

extern int NET_Read(int s, void* buf, size_t len);

extern int NET_RecvFrom(int s, void *buf, int len, unsigned int flags,

       struct sockaddr *from, int *fromlen);

extern int NET_ReadV(int s, const struct iovec * vector, int count);

extern int NET_Send(int s, void *msg, int len, unsigned int flags);

extern int NET_SendTo(int s, const void *msg, int len,  unsigned  int

       flags, const struct sockaddr *to, int tolen);

extern int NET_Writev(int s, const struct iovec * vector, int count);

extern int NET_Connect(int s, struct sockaddr *addr, int addrlen);

extern int NET_Accept(int s, struct sockaddr *addr, int *addrlen);

extern int NET_SocketClose(int s);

extern int NET_Dup2(int oldfd, int newfd);

#ifdef USE_SELECT

extern int NET_Select(int s, fd_set *readfds, fd_set *writefds,

               fd_set *exceptfds, struct timeval *timeout);

#else

extern int NET_Poll(struct pollfd *ufds, unsigned int nfds, int timeout);

#endif

#else

#define NET_Timeout     JVM_Timeout

#define NET_Read        JVM_Read

#define NET_RecvFrom    JVM_RecvFrom

#define NET_ReadV       readv

#define NET_Send        JVM_Send

#define NET_SendTo      JVM_SendTo

#define NET_WriteV      writev

#define NET_Connect     JVM_Connect

#define NET_Accept      JVM_Accept

#define NET_SocketClose JVM_SocketClose

#define NET_Dup2        dup2

#define NET_Select      select

#define NET_Poll        poll

#endif

#if defined(__linux__) && defined(AF_INET6)

int getDefaultIPv6Interface(struct in6_addr *target_addr);

#endif

#ifdef __solaris__

extern int net_getParam(char *driver, char *param);

#endif

/* needed from libsocket on Solaris 8 */

typedef int (*getaddrinfo_f)(const char *nodename, const char *servname,

    const struct addrinfo *hints, struct addrinfo **res);

typedef void (*freeaddrinfo_f)(struct addrinfo *);

typedef const char * (*gai_strerror_f)(int ecode);

typedef int (*getnameinfo_f)(const struct sockaddr *, size_t,

    char *, size_t, char *, size_t, int);

extern getaddrinfo_f getaddrinfo_ptr;

extern freeaddrinfo_f freeaddrinfo_ptr;

extern getnameinfo_f getnameinfo_ptr;

void ThrowUnknownHostExceptionWithGaiError(JNIEnv *env,

                                           const char* hostname,

                                           int gai_error);

#define NET_WAIT_READ   0x01

#define NET_WAIT_WRITE  0x02

#define NET_WAIT_CONNECT        0x04

extern jint NET_Wait(JNIEnv *env, jint fd, jint flags, jint timeout);

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

 * Macros and constants

 */

/*

 * On 64-bit JDKs we use a much larger stack and heap buffer.

 */

#ifdef _LP64

#define MAX_BUFFER_LEN 65536

#define MAX_HEAP_BUFFER_LEN 131072

#else

#define MAX_BUFFER_LEN 8192

#define MAX_HEAP_BUFFER_LEN 65536

#endif

#ifdef AF_INET6

#define SOCKADDR        union { \

                            struct sockaddr_in him4; \

                            struct sockaddr_in6 him6; \

                        }

#define SOCKADDR_LEN    (ipv6_available() ? sizeof(SOCKADDR) : \

                         sizeof(struct sockaddr_in))

#else

#define SOCKADDR        union { struct sockaddr_in him4; }

#define SOCKADDR_LEN    sizeof(SOCKADDR)

#endif

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

 *  Utilities

 */

#ifdef __linux__

extern int kernelIsV24();

#endif

void NET_ThrowByNameWithLastError(JNIEnv *env, const char *name,

                   const char *defaultDetail);

#endif /* NET_UTILS_MD_H */