path: root/resolv/ns_print.c

/*
 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
 * Copyright (c) 1996-1999 by Internet Software Consortium.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */

/* Import. */

#include <sys/types.h>
#include <sys/socket.h>

#include <netinet/in.h>
#include <arpa/nameser.h>
#include <arpa/inet.h>

#include <assert.h>
#include <errno.h>
#include <resolv.h>
#include <string.h>
#include <ctype.h>

#define SPRINTF(x) ((size_t)sprintf x)

/* Forward. */

static size_t	prune_origin(const char *name, const char *origin);
static int	charstr(const u_char *rdata, const u_char *edata,
			char **buf, size_t *buflen);
static int	addname(const u_char *msg, size_t msglen,
			const u_char **p, const char *origin,
			char **buf, size_t *buflen);
static void	addlen(size_t len, char **buf, size_t *buflen);
static int	addstr(const char *src, size_t len,
		       char **buf, size_t *buflen);
static int	addtab(size_t len, size_t target, int spaced,
		       char **buf, size_t *buflen);

/* Macros. */

#define	T(x) \
	do { \
		if ((x) < 0) \
			return (-1); \
	} while (0)

/* Public. */

/*%
 *	Convert an RR to presentation format.
 *
 * return:
 *\li	Number of characters written to buf, or -1 (check errno).
 */
int
ns_sprintrr(const ns_msg *handle, const ns_rr *rr,
	    const char *name_ctx, const char *origin,
	    char *buf, size_t buflen)
{
	int n;

	n = ns_sprintrrf(ns_msg_base(*handle), ns_msg_size(*handle),
			 ns_rr_name(*rr), ns_rr_class(*rr), ns_rr_type(*rr),
			 ns_rr_ttl(*rr), ns_rr_rdata(*rr), ns_rr_rdlen(*rr),
			 name_ctx, origin, buf, buflen);
	return (n);
}
libresolv_hidden_def (ns_sprintrr)

/*%
 *	Convert the fields of an RR into presentation format.
 *
 * return:
 *\li	Number of characters written to buf, or -1 (check errno).
 */