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/*
** Master include file of the host utility.
**
** @(#)host.h e07@nikhef.nl (Eric Wassenaar) 991529
*/
#if defined(apollo) && defined(lint)
#define __attribute(x)
#endif
#define justfun /* this is only for fun */
#undef obsolete /* old code left as a reminder */
#undef notyet /* new code for possible future use */
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <setjmp.h>
#include <signal.h>
#include <time.h>
#include <sys/types.h> /* not always automatically included */
#if !defined(WINNT)
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#include <sys/stat.h>
#if !defined(WINNT)
#include <sys/time.h>
#endif
#if defined(_AIX)
#include <sys/select.h> /* needed for fd_set */
#endif
#include <fcntl.h>
#include <netdb.h>
#undef NOERROR /* in <sys/streams.h> on solaris 2.x */
#include <arpa/nameser.h>
#include <resolv.h>
#include "port.h" /* various portability definitions */
#include "conf.h" /* various configuration definitions */
#include "type.h" /* types should be in <arpa/nameser.h> */
#include "exit.h" /* exit codes come from <sysexits.h> */
#ifndef NO_DATA
#define NO_DATA NO_ADDRESS /* used here only in case authoritative */
#endif
#define NO_RREC (NO_DATA + 1) /* non-authoritative NO_DATA */
#define NO_HOST (NO_DATA + 2) /* non-authoritative HOST_NOT_FOUND */
#define QUERY_REFUSED (NO_DATA + 3) /* query explicitly refused by server */
#define SERVER_FAILURE (NO_DATA + 4) /* instead of TRY_AGAIN upon SERVFAIL */
#define HOST_NOT_CANON (NO_DATA + 5) /* host name is not canonical */
#define CACHE_ERROR (NO_DATA + 6) /* to signal local cache I/O errors */
#define T_NONE 0 /* yet unspecified resource record type */
#define T_FIRST T_A /* first possible type in resource record */
#define T_LAST (T_IXFR - 1) /* last possible type in resource record */
#ifndef NOCHANGE
#define NOCHANGE 0xf /* compatibility with older BIND versions */
#endif
#define NOT_DOTTED_QUAD ((ipaddr_t)-1)
#define BROADCAST_ADDR ((ipaddr_t)0xffffffff)
#define LOCALHOST_ADDR ((ipaddr_t)0x7f000001)
#if PACKETSZ > 8192
#define MAXPACKET PACKETSZ /* PACKETSZ should be the max udp size (512) */
#else
#define MAXPACKET 8192 /* but tcp packets can be considerably larger */
#endif
typedef union {
HEADER header;
u_char packet[MAXPACKET];
} querybuf;
#ifndef HFIXEDSZ
#define HFIXEDSZ 12 /* actually sizeof(HEADER) */
#endif
#define MAXDLEN (MAXPACKET - HFIXEDSZ) /* upper bound for dlen */
#include "rrec.h" /* resource record structures */
#define input /* read-only input parameter */
#define output /* modified output parameter */
#define STDIN 0
#define STDOUT 1
#define STDERR 2
#define MAXINT8 255
#define MAXINT16 65535
#define HASHSIZE 2003 /* size of various hash tables */
#ifdef lint
#define EXTERN
#else
#define EXTERN extern
#endif
#if !defined(errno)
EXTERN int errno;
#endif
#if !defined(h_errno)
EXTERN int h_errno; /* defined in the resolver library */
#endif
EXTERN res_state_t _res; /* defined in res_init.c */
#include "defs.h" /* declaration of functions */
#define plural(n) (((n) == 1) ? "" : "s")
#define plurale(n) (((n) == 1) ? "" : "es")
#define is_xdigit(c) (isascii(c) && isxdigit(c))
#define is_digit(c) (isascii(c) && isdigit(c))
#define is_print(c) (isascii(c) && isprint(c))
#define is_space(c) (isascii(c) && isspace(c))
#define is_alnum(c) (isascii(c) && isalnum(c))
#define is_upper(c) (isascii(c) && isupper(c))
#define lowercase(c) (is_upper(c) ? tolower(c) : (c))
#define lower(c) (((c) >= 'A' && (c) <= 'Z') ? (c) + 'a' - 'A' : (c))
#define hexdigit(c) (((c) < 10) ? '0' + (c) : 'A' + (c) - 10);
#define bitset(a,b) (((a) & (b)) != 0)
#define sameword(a,b) (strcasecmp(a, b) == 0)
#define samepart(a,b) (strncasecmp(a, b, strlen(b)) == 0)
#define samehead(a,b) (strncasecmp(a, b, sizeof(b)-1) == 0)
#define zeroname(a) (samehead(a, "0.") || samehead(a, "255."))
#define fakename(a) (samehead(a, "localhost.") || samehead(a, "loopback."))
#define nulladdr(a) (((a) == 0) || ((a) == BROADCAST_ADDR))
#define fakeaddr(a) (nulladdr(a) || ((a) == htonl(LOCALHOST_ADDR)))
#define incopy(a) *((struct in_addr *)(a))
#define querysize(n) (((n) > sizeof(querybuf)) ? (int)sizeof(querybuf) : (n))
#define newlist(a,n,t) (t *)xalloc((ptr_t *)(a), (siz_t)((n)*sizeof(t)))
#define newstruct(t) (t *)xalloc((ptr_t *)NULL, (siz_t)(sizeof(t)))
#define newstring(s) (char *)xalloc((ptr_t *)NULL, (siz_t)(strlen(s)+1))
#define newstr(s) strcpy(newstring(s), s)
#define xfree(a) (void) free((ptr_t *)(a))
#define strlength(s) (int)strlen(s)
#define in_string(s,c) (index(s, c) != NULL)
#define in_label(a,b) (((a) > (b)) && ((a)[-1] != '.') && ((a)[1] != '.'))
#define is_quoted(a,b) (((a) > (b)) && ((a)[-1] == '\\'))
#define is_empty(s) (((s) == NULL) || ((s)[0] == '\0'))
#ifdef DEBUG
#define assert(condition)\
{\
if (!(condition))\
{\
(void) fprintf(stderr, "assertion botch: ");\
(void) fprintf(stderr, "%s(%d): ", __FILE__, __LINE__);\
(void) fprintf(stderr, "%s\n", "condition");\
exit(EX_SOFTWARE);\
}\
}
#else
#define assert(condition)
#endif
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