a_1.c revision 94a3bcd132e515b4baa0884ba9dd0f361d2e17bc
/*
* Copyright (C) 1998-1999 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.
*/
/* $Id: a_1.c,v 1.14 1999/05/07 03:24:13 marka Exp $ */
#ifndef RDATA_IN_1_A_1_C
#define RDATA_IN_1_A_1_C
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <isc/inet.h>
static dns_result_t
fromtext_in_a(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;
struct in_addr addr;
isc_region_t region;
REQUIRE(type == 1);
REQUIRE(class == 1);
origin = origin; /*unused*/
downcase = downcase; /*unused*/
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
if (isc_inet_aton(token.value.as_pointer, &addr) != 1)
return (DNS_R_BADDOTTEDQUAD);
isc_buffer_available(target, &region);
if (region.length < 4)
return (DNS_R_NOSPACE);
memcpy(region.base, &addr, 4);
isc_buffer_add(target, 4);
return (DNS_R_SUCCESS);
}
static dns_result_t
totext_in_a(dns_rdata_t *rdata, dns_name_t *origin, isc_buffer_t *target) {
isc_region_t region;
REQUIRE(rdata->type == 1);
REQUIRE(rdata->class == 1);
REQUIRE(rdata->length == 4);
origin = origin; /* unused */
isc_buffer_available(target, &region);
if (isc_inet_ntop(AF_INET, rdata->data,
(char *)region.base, region.length) == NULL)
return (DNS_R_NOSPACE);
isc_buffer_add(target, strlen((char *)region.base));
return (DNS_R_SUCCESS);
}
static dns_result_t
fromwire_in_a(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 sregion;
isc_region_t tregion;
REQUIRE(type == 1);
REQUIRE(class == 1);
dctx = dctx; /* unused */
downcase = downcase; /* unused */
isc_buffer_active(source, &sregion);
isc_buffer_available(target, &tregion);
if (sregion.length < 4)
return (DNS_R_UNEXPECTEDEND);
if (tregion.length < 4)
return (DNS_R_NOSPACE);
memcpy(tregion.base, sregion.base, 4);
isc_buffer_forward(source, 4);
isc_buffer_add(target, 4);
return (DNS_R_SUCCESS);
}
static dns_result_t
towire_in_a(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
isc_region_t region;
REQUIRE(rdata->type == 1);
REQUIRE(rdata->class == 1);
cctx = cctx; /*unused*/
isc_buffer_available(target, &region);
if (region.length < rdata->length)
return (DNS_R_NOSPACE);
memcpy(region.base, rdata->data, rdata->length);
isc_buffer_add(target, 4);
return (DNS_R_SUCCESS);
}
static int
compare_in_a(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
int result;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->class == rdata2->type);
REQUIRE(rdata1->type == 1);
REQUIRE(rdata1->class == 1);
result = memcmp(rdata1->data, rdata2->data, 4);
if (result != 0)
result = (result < 0) ? -1 : 1;
return (result);
}
static dns_result_t
fromstruct_in_a(dns_rdataclass_t class, dns_rdatatype_t type, void *source,
isc_buffer_t *target)
{
REQUIRE(type == 1);
REQUIRE(class == 1);
source = source;
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
static dns_result_t
tostruct_in_a(dns_rdata_t *rdata, void *target, isc_mem_t *mctx) {
REQUIRE(rdata->type == 1);
REQUIRE(rdata->class == 1);
target = target;
mctx = mctx;
return (DNS_R_NOTIMPLEMENTED);
}
static void
freestruct_in_a(void *source) {
REQUIRE(source != NULL);
REQUIRE(ISC_FALSE); /*XXX*/
}
#endif /* RDATA_IN_1_A_1_C */