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/* -*- c -*- ------------------------------------------------------------- *
 *
 *   Copyright 2001-2006 H. Peter Anvin - All Rights Reserved
 *
 *   This program is free software available under the same license
 *   as the "OpenBSD" operating system, distributed at
 *   http://www.openbsd.org/.
 *
 * ----------------------------------------------------------------------- */

/*
 * config.h
 *
 * Sets up a common baseline environment, based on "autoconf" findings...
 */

#ifndef CONFIG_H
#define CONFIG_H 1

/* Must be included before we include any system headers! */
#include "aconfig.h"            /* autogenerated configuration header */

/* Standard includes */

#include <stdio.h>

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif

#ifdef STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#else
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#endif

#ifdef HAVE_MEMORY_H
#ifndef STDC_HEADERS
#include <memory.h>
#endif
#endif

#ifdef HAVE_STRING_H
#include <string.h>
#endif

#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif

#ifdef HAVE_INTTYPES_H
#ifdef INTTYPES_H_IS_SANE
#include <inttypes.h>
#endif
#else
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif

#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif

#ifdef HAVE_GRP_H
#include <grp.h>
#endif

#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif

#include <errno.h>
#include <signal.h>

#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#else
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#else
#ifdef HAVE_WINSOCK_H
#include <winsock.h>
#endif
#endif
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif

#ifdef HAVE_GETOPT_LONG
#include <getopt.h>
#else
#include "lib/getopt.h"
#endif

#ifdef HAVE_SYS_CAPABILITY_H
#include <sys/capability.h>
#endif

/* A lot of this is old BSD code.  Some newer systems don't approve. */

/* The type used by htons(), ntohs() */
#ifndef HAVE_U_SHORT
#ifdef HAVE_UINT16_T
typedef uint16_t u_short;
#else
typedef unsigned short u_short;
#endif
#endif

/* The type used to htonl(), ntohl() */
#ifndef HAVE_U_LONG
#ifdef HAVE_UINT32_T
typedef uint32_t u_long;
#else
typedef unsigned long u_long;
#endif
#endif

/* socklen_t */
#ifndef HAVE_SOCKLEN_T
typedef int socklen_t;
#endif

/* sysexits.h */

#ifdef HAVE_SYSEXITS_H
#include <sysexits.h>
#else
#define EX_USAGE        64      /* command line usage error */
#define EX_DATAERR      65      /* data format error */
#define EX_NOINPUT      66      /* cannot open input */
#define EX_NOUSER       67      /* addressee unknown */
#define EX_NOHOST       68      /* host name unknown */
#define EX_UNAVAILABLE  69      /* service unavailable */
#define EX_SOFTWARE     70      /* internal software error */
#define EX_OSERR        71      /* system error (e.g., can't fork) */
#define EX_OSFILE       72      /* critical OS file missing */
#define EX_CANTCREAT    73      /* can't create (user) output file */
#define EX_IOERR        74      /* input/output error */
#define EX_TEMPFAIL     75      /* temp failure; user is invited to retry */
#define EX_PROTOCOL     76      /* remote error in protocol */
#define EX_NOPERM       77      /* permission denied */
#define EX_CONFIG       78      /* configuration error */
#endif

/* If we don't have sigsetjmp() et all, setjmp() will have to do */

#ifndef HAVE_SIGSETJMP
#define sigsetjmp(x,y)  setjmp(x)
#define siglongjmp(x,y) longjmp(x,y)
#define sigjmp_buf jmp_buf
#endif

/* How do we annotate unused data items? */

#ifndef UNUSED
#ifdef __GNUC__
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
#endif

/* arpa/inet.h, and possible missing pieces */

#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif

/* Prototypes for libxtra functions */

#ifndef HAVE_DUP2
int dup2(int, int);
#endif
#ifndef HAVE_DAEMON
int daemon(int, int);
#endif

#ifndef HAVE_GETADDRINFO
#ifndef HAVE_STRUCT_ADDRINFO
struct addrinfo {
    int     ai_flags;
    int     ai_family;
    int     ai_socktype;
    int     ai_protocol;
    size_t  ai_addrlen;
    struct sockaddr *ai_addr;
    char    *ai_canonname;
    struct addrinfo *ai_next;
};
#endif
int getaddrinfo(const char *, const char *, const struct addrinfo *,
                struct addrinfo **);
void freeaddrinfo(struct addrinfo *);
const char *gai_strerror(int);


#ifndef EAI_NONAME
#define EAI_NONAME      -2    /* NAME or SERVICE is unknown.  */
#endif
#ifndef EAI_ADDRFAMILY
#define EAI_ADDRFAMILY -9    /* Address family for NAME not supported.  */
#endif
#ifndef EAI_MEMORY
#define EAI_MEMORY      -10   /* Memory allocation failure.  */
#endif
#ifndef EAI_SYSTEM
#define EAI_SYSTEM      -11   /* System error returned in `errno'.  */
#endif
#endif

#ifndef AI_CANONNAME
#define AI_CANONNAME    0
#endif

#ifndef AI_ADDRCONFIG
#define AI_ADDRCONFIG   0
#endif

#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN 46
#endif

#endif