wks_11.c 5.8 KB
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/*
 * Copyright (C) 1998 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.
 */

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 /* $Id: wks_11.c,v 1.3 1999/01/22 04:35:10 explorer Exp $ */
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#ifndef RDATA_IN_1_WKS_11_H
#define RDATA_IN_1_WKS_11_H

#include <limits.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>

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#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
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#include <isc/inet.h>
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static dns_result_t
fromtext_in_wks(dns_rdataclass_t class, dns_rdatatype_t type,
	   isc_lex_t *lexer, dns_name_t *origin,
	   isc_boolean_t downcase, isc_buffer_t *target) {
	isc_token_t token;
	isc_region_t region;
	struct in_addr addr;
	struct protoent *pe;
	struct servent *se;
	char *e;
	long proto;
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	unsigned char bm[8*1024]; /* 64k bits */
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	long port;
	long maxport = -1;
	char *ps = NULL;
	unsigned int n;

	REQUIRE(type == 11);
	REQUIRE(class == 1);
	
	origin = origin;	/*unused*/
	downcase = downcase;	/*unused*/

	/* IPv4 dotted quad */
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	RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
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	isc_buffer_available(target, &region);
	if (inet_aton(token.value.as_pointer , &addr) != 1)
		return (DNS_R_BADDOTTEDQUAD);
	if (region.length < 4)
		return (DNS_R_NOSPACE);
	memcpy(region.base, &addr, 4);
	isc_buffer_add(target, 4);

	/* protocol */
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	RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
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	proto = strtol(token.value.as_pointer, &e, 10);
	if (*e == '\0')
		(void)NULL;
	else if ((pe = getprotobyname(token.value.as_pointer)) != NULL)
		proto = pe->p_proto;
	else
		return (DNS_R_UNEXPECTED);
	if (proto < 0 || proto > 0xffff)
		return (DNS_R_RANGE);

	if (proto == IPPROTO_TCP)
		ps = "tcp";
	else if (proto == IPPROTO_UDP)
		ps = "udp";

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	RETERR(uint16_tobuffer(proto, target));
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	memset(bm, 0, sizeof bm);
	while (1) {
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		RETERR(gettoken(lexer, &token, isc_tokentype_string,
				  ISC_TRUE));
		if (token.type != isc_tokentype_string)
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			break;
		port = strtol(token.value.as_pointer, &e, 10);
		if (*e == '\0')
			(void) NULL;
		else if ((se = getservbyname(token.value.as_pointer, ps))
			  != NULL)
			port = ntohs(se->s_port);
		else
			return (DNS_R_UNEXPECTED);
		if (port < 0 || port > 0xffff)
			return (DNS_R_RANGE);
		if (port > maxport)
			maxport = port;
		bm[port/8] |= (0x80>>(port%8));
	}
	isc_lex_ungettoken(lexer, &token);
	n = (maxport + 8) / 8;
	return (mem_tobuffer(target, bm, n));
}

static dns_result_t
totext_in_wks(dns_rdata_t *rdata, dns_name_t *origin, isc_buffer_t *target) {
	isc_region_t sr;
	isc_region_t tr;
	unsigned short proto;
	char buf[sizeof "65535"];
	unsigned int i, j;

	REQUIRE(rdata->type == 11);
	REQUIRE(rdata->class == 1);

	origin = origin;
	dns_rdata_toregion(rdata, &sr);
	isc_buffer_available(target, &tr);
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	if (isc_inet_ntop(AF_INET, sr.base, tr.base, tr.length) == NULL)
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		return (DNS_R_NOSPACE);
	isc_buffer_add(target, strlen(tr.base));
	isc_region_consume(&sr, 4);

	proto = uint16_fromregion(&sr);
	sprintf(buf, "%u", proto);
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	RETERR(str_totext(" ", target));
	RETERR(str_totext(buf, target));
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	isc_region_consume(&sr, 2);
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	RETERR(str_totext(" (", target));

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	for (i = 0 ; i < sr.length ; i++) {
		if (sr.base[i] != 0)
			for (j = 0; j < 8; j++)
				if ((sr.base[i] & (0x80>>j)) != 0) {
					sprintf(buf, "%u", i * 8 + j);
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					RETERR(str_totext(" ", target));
					RETERR(str_totext(buf, target));
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				}
	}
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	RETERR(str_totext(" )", target));
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	return (DNS_R_SUCCESS);
}

static dns_result_t
fromwire_in_wks(dns_rdataclass_t class, dns_rdatatype_t type,
	   isc_buffer_t *source, dns_decompress_t *dctx,
	   isc_boolean_t downcase, isc_buffer_t *target) {
	isc_region_t sr;
	isc_region_t tr;

	REQUIRE(type == 11);
	REQUIRE(class == 1);

	dctx = dctx;		/*unused*/
	downcase = downcase;	/*unused*/
	
	isc_buffer_active(source, &sr);
	isc_buffer_available(target, &tr);

	if (sr.length < 6)
		return (DNS_R_UNEXPECTEDEND);
	if (sr.length > 8 * 1024 + 6)
		return (DNS_R_EXTRADATA);
	if (tr.length < sr.length)
		return (DNS_R_NOSPACE);

	memcpy(tr.base, sr.base, sr.length);
	isc_buffer_add(target, sr.length);
	isc_buffer_forward(source, sr.length);
	return (DNS_R_SUCCESS);
}

static dns_result_t
towire_in_wks(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
	isc_region_t sr;

	REQUIRE(rdata->type == 11);
	REQUIRE(rdata->class == 1);

	cctx = cctx;	/*unused*/

	dns_rdata_toregion(rdata, &sr);
	return (mem_tobuffer(target, sr.base, sr.length));
}

static int
compare_in_wks(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
	isc_region_t r1;
	isc_region_t r2;

	REQUIRE(rdata1->type == rdata2->type);
	REQUIRE(rdata1->class == rdata2->class);
	REQUIRE(rdata1->type == 11);
	REQUIRE(rdata1->class == 1);

	dns_rdata_toregion(rdata1, &r1);
	dns_rdata_toregion(rdata2, &r2);
	return (compare_region(&r1, &r2));
}

static dns_result_t
fromstruct_in_wks(dns_rdataclass_t class, dns_rdatatype_t type, void *source,
	     isc_buffer_t *target) {

	REQUIRE(type == 11);
	REQUIRE(class == 1);

	source = source;
	target = target;

	return (DNS_R_NOTIMPLEMENTED);
}

static dns_result_t
tostruct_in_wks(dns_rdata_t *rdata, void *target) {

	REQUIRE(rdata->type == 11);
	REQUIRE(rdata->class == 1);

	target = target;

	return (DNS_R_NOTIMPLEMENTED);
}
#endif	/* RDATA_IN_1_WKS_11_H */