ns_print.c

bind 9.3结合mysql数据库

/*
 * 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 ISC DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC 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.
 */

#ifndef lint
static const char rcsid[] = "$Id: ns_print.c,v 1.3.2.1.4.5 2004/07/28 20:16:45 marka Exp $";
#endif

/* Import. */

#include "port_before.h"

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

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

#include <isc/assertions.h>
#include <isc/dst.h>
#include <errno.h>
#include <resolv.h>
#include <string.h>
#include <ctype.h>

#include "port_after.h"

#ifdef SPRINTF_CHAR
# define SPRINTF(x) strlen(sprintf/**/x)
#else
# define SPRINTF(x) ((size_t)sprintf x)
#endif

/* 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. */

/*
 * int
 * ns_sprintrr(handle, rr, name_ctx, origin, buf, buflen)
 *	Convert an RR to presentation format.
 * return:
 *	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);
}

/*
 * int
 * ns_sprintrrf(msg, msglen, name, class, type, ttl, rdata, rdlen,
 *	       name_ctx, origin, buf, buflen)
 *	Convert the fields of an RR into presentation format.
 * return:
 *	Number of characters written to buf, or -1 (check errno).
 */
int
ns_sprintrrf(const u_char *msg, size_t msglen,
	    const char *name, ns_class class, ns_type type,
	    u_long ttl, const u_char *rdata, size_t rdlen,
	    const char *name_ctx, const char *origin,
	    char *buf, size_t buflen)
{
	const char *obuf = buf;
	const u_char *edata = rdata + rdlen;
	int spaced = 0;

	const char *comment;
	char tmp[100];
	int len, x;

	/*
	 * Owner.
	 */
	if (name_ctx != NULL && ns_samename(name_ctx, name) == 1) {
		T(addstr("\t\t\t", 3, &buf, &buflen));
	} else {
		len = prune_origin(name, origin);
		if (*name == '\0') {
			goto root;
		} else if (len == 0) {
			T(addstr("@\t\t\t", 4, &buf, &buflen));
		} else {
			T(addstr(name, len, &buf, &buflen));
			/* Origin not used or not root, and no trailing dot? */
			if (((origin == NULL || origin[0] == '\0') ||
			    (origin[0] != '.' && origin[1] != '\0' &&
			    name[len] == '\0')) && name[len - 1] != '.') {
 root:
				T(addstr(".", 1, &buf, &buflen));
				len++;
			}
			T(spaced = addtab(len, 24, spaced, &buf, &buflen));
		}
	}

	/*
	 * TTL, Class, Type.
	 */
	T(x = ns_format_ttl(ttl, buf, buflen));
	addlen(x, &buf, &buflen);
	len = SPRINTF((tmp, " %s %s", p_class(class), p_type(type)));
	T(addstr(tmp, len, &buf, &buflen));
	T(spaced = addtab(x + len, 16, spaced, &buf, &buflen));

	/*
	 * RData.
	 */
	switch (type) {
	case ns_t_a:
		if (rdlen != (size_t)NS_INADDRSZ)
			goto formerr;
		(void) inet_ntop(AF_INET, rdata, buf, buflen);
		addlen(strlen(buf), &buf, &buflen);
		break;

	case ns_t_cname:
	case ns_t_mb:
	case ns_t_mg:
	case ns_t_mr:
	case ns_t_ns:
	case ns_t_ptr:
	case ns_t_dname:
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
		break;

	case ns_t_hinfo:
	case ns_t_isdn:
		/* First word. */
		T(len = charstr(rdata, edata, &buf, &buflen));
		if (len == 0)
			goto formerr;
		rdata += len;
		T(addstr(" ", 1, &buf, &buflen));

		    
		/* Second word, optional in ISDN records. */
		if (type == ns_t_isdn && rdata == edata)
			break;
		    
		T(len = charstr(rdata, edata, &buf, &buflen));
		if (len == 0)
			goto formerr;
		rdata += len;
		break;

	case ns_t_soa: {
		u_long t;

		/* Server name. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
		T(addstr(" ", 1, &buf, &buflen));

		/* Administrator name. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
		T(addstr(" (\n", 3, &buf, &buflen));
		spaced = 0;

		if ((edata - rdata) != 5*NS_INT32SZ)
			goto formerr;

		/* Serial number. */
		t = ns_get32(rdata);  rdata += NS_INT32SZ;
		T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
		len = SPRINTF((tmp, "%lu", t));
		T(addstr(tmp, len, &buf, &buflen));
		T(spaced = addtab(len, 16, spaced, &buf, &buflen));
		T(addstr("; serial\n", 9, &buf, &buflen));
		spaced = 0;

		/* Refresh interval. */
		t = ns_get32(rdata);  rdata += NS_INT32SZ;
		T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
		T(len = ns_format_ttl(t, buf, buflen));
		addlen(len, &buf, &buflen);
		T(spaced = addtab(len, 16, spaced, &buf, &buflen));
		T(addstr("; refresh\n", 10, &buf, &buflen));
		spaced = 0;

		/* Retry interval. */
		t = ns_get32(rdata);  rdata += NS_INT32SZ;
		T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
		T(len = ns_format_ttl(t, buf, buflen));
		addlen(len, &buf, &buflen);
		T(spaced = addtab(len, 16, spaced, &buf, &buflen));
		T(addstr("; retry\n", 8, &buf, &buflen));
		spaced = 0;

		/* Expiry. */
		t = ns_get32(rdata);  rdata += NS_INT32SZ;
		T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
		T(len = ns_format_ttl(t, buf, buflen));
		addlen(len, &buf, &buflen);
		T(spaced = addtab(len, 16, spaced, &buf, &buflen));
		T(addstr("; expiry\n", 9, &buf, &buflen));
		spaced = 0;

		/* Minimum TTL. */
		t = ns_get32(rdata);  rdata += NS_INT32SZ;
		T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
		T(len = ns_format_ttl(t, buf, buflen));
		addlen(len, &buf, &buflen);
		T(addstr(" )", 2, &buf, &buflen));
		T(spaced = addtab(len, 16, spaced, &buf, &buflen));
		T(addstr("; minimum\n", 10, &buf, &buflen));

		break;
	    }

	case ns_t_mx:
	case ns_t_afsdb:
	case ns_t_rt: {
		u_int t;

		if (rdlen < (size_t)NS_INT16SZ)
			goto formerr;

		/* Priority. */
		t = ns_get16(rdata);
		rdata += NS_INT16SZ;
		len = SPRINTF((tmp, "%u ", t));
		T(addstr(tmp, len, &buf, &buflen));

		/* Target. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));

		break;
	    }

	case ns_t_px: {
		u_int t;

		if (rdlen < (size_t)NS_INT16SZ)
			goto formerr;

		/* Priority. */
		t = ns_get16(rdata);
		rdata += NS_INT16SZ;
		len = SPRINTF((tmp, "%u ", t));
		T(addstr(tmp, len, &buf, &buflen));

		/* Name1. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
		T(addstr(" ", 1, &buf, &buflen));

		/* Name2. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));

		break;
	    }

	case ns_t_x25:
		T(len = charstr(rdata, edata, &buf, &buflen));
		if (len == 0)
			goto formerr;
		rdata += len;
		break;

	case ns_t_txt:
		while (rdata < edata) {
			T(len = charstr(rdata, edata, &buf, &buflen));
			if (len == 0)
				goto formerr;
			rdata += len;
			if (rdata < edata)
				T(addstr(" ", 1, &buf, &buflen));
		}
		break;

	case ns_t_nsap: {
		char t[2+255*3];

		(void) inet_nsap_ntoa(rdlen, rdata, t);
		T(addstr(t, strlen(t), &buf, &buflen));
		break;
	    }

	case ns_t_aaaa:
		if (rdlen != (size_t)NS_IN6ADDRSZ)
			goto formerr;
		(void) inet_ntop(AF_INET6, rdata, buf, buflen);
		addlen(strlen(buf), &buf, &buflen);
		break;

	case ns_t_loc: {
		char t[255];

		/* XXX protocol format checking? */
		(void) loc_ntoa(rdata, t);
		T(addstr(t, strlen(t), &buf, &buflen));
		break;
	    }

	case ns_t_naptr: {
		u_int order, preference;
		char t[50];

		if (rdlen < 2U*NS_INT16SZ)
			goto formerr;

		/* Order, Precedence. */
		order = ns_get16(rdata);	rdata += NS_INT16SZ;
		preference = ns_get16(rdata);	rdata += NS_INT16SZ;
		len = SPRINTF((t, "%u %u ", order, preference));
		T(addstr(t, len, &buf, &buflen));

		/* Flags. */
		T(len = charstr(rdata, edata, &buf, &buflen));
		if (len == 0)
			goto formerr;
		rdata += len;
		T(addstr(" ", 1, &buf, &buflen));

		/* Service. */
		T(len = charstr(rdata, edata, &buf, &buflen));
		if (len == 0)
			goto formerr;
		rdata += len;
		T(addstr(" ", 1, &buf, &buflen));

		/* Regexp. */
		T(len = charstr(rdata, edata, &buf, &buflen));
		if (len < 0)
			return (-1);
		if (len == 0)
			goto formerr;
		rdata += len;
		T(addstr(" ", 1, &buf, &buflen));

		/* Server. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
		break;
	    }

	case ns_t_srv: {
		u_int priority, weight, port;
		char t[50];

		if (rdlen < 3U*NS_INT16SZ)
			goto formerr;

		/* Priority, Weight, Port. */
		priority = ns_get16(rdata);  rdata += NS_INT16SZ;
		weight   = ns_get16(rdata);  rdata += NS_INT16SZ;
		port     = ns_get16(rdata);  rdata += NS_INT16SZ;
		len = SPRINTF((t, "%u %u %u ", priority, weight, port));
		T(addstr(t, len, &buf, &buflen));

		/* Server. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
		break;
	    }

	case ns_t_minfo:
	case ns_t_rp:
		/* Name1. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
		T(addstr(" ", 1, &buf, &buflen));

		/* Name2. */
		T(addname(msg, msglen, &rdata, origin, &buf, &buflen));

		break;

	case ns_t_wks: {
		int n, lcnt;

		if (rdlen < 1U + NS_INT32SZ)
			goto formerr;

		/* Address. */
		(void) inet_ntop(AF_INET, rdata, buf, buflen);
		addlen(strlen(buf), &buf, &buflen);
		rdata += NS_INADDRSZ;

		/* Protocol. */
		len = SPRINTF((tmp, " %u ( ", *rdata));
		T(addstr(tmp, len, &buf, &buflen));
		rdata += NS_INT8SZ;

		/* Bit map. */
		n = 0;
		lcnt = 0;
		while (rdata < edata) {
			u_int c = *rdata++;
			do {
				if (c & 0200) {
					if (lcnt == 0) {
						T(addstr("\n\t\t\t\t", 5,
							 &buf, &buflen));
						lcnt = 10;
						spaced = 0;
					}
					len = SPRINTF((tmp, "%d ", n));
					T(addstr(tmp, len, &buf, &buflen));
					lcnt--;
				}
				c <<= 1;
			} while (++n & 07);
		}
		T(addstr(")", 1, &buf, &buflen));

		break;
	    }

	case ns_t_key: {