rdata/generic/soa_6.h

	soa_6.h revision 44a966dff66061ac3f266c6b451a70733eb78e82
/*
 * 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.
 */

 /* $Id: soa_6.h,v 1.7 1999/01/21 06:02:14 marka Exp $ */

#ifndef RDATA_GENERIC_SOA_6_H
#define RDATA_GENERIC_SOA_6_H

static dns_result_t
fromtext_soa(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;
    dns_name_t name;
    isc_buffer_t buffer;
    dns_result_t result;
    int i;
    unsigned int options = ISC_LEXOPT_EOL | ISC_LEXOPT_EOF;

    REQUIRE(type == 6);

    class = class;  /*unused*/

    if (isc_lex_gettoken(lexer, options, &token) != ISC_R_SUCCESS)
        return (DNS_R_UNEXPECTED);
    if (token.type != isc_tokentype_string) {
        isc_lex_ungettoken(lexer, &token);
        if (token.type == isc_tokentype_eol ||
            token.type == isc_tokentype_eof)
            return(DNS_R_UNEXPECTEDEND);
        return (DNS_R_UNEXPECTED);
    }

    dns_name_init(&name, NULL);
    buffer_fromregion(&buffer, &token.value.as_region,
              ISC_BUFFERTYPE_TEXT);
    origin = (origin != NULL) ? origin : dns_rootname;
    result = dns_name_fromtext(&name, &buffer, origin, downcase, target);
    if (result != DNS_R_SUCCESS)
        return (result);

    if (isc_lex_gettoken(lexer, options, &token) != ISC_R_SUCCESS)
        return (DNS_R_UNEXPECTED);
    if (token.type != isc_tokentype_string) {
        isc_lex_ungettoken(lexer, &token);
        if (token.type == isc_tokentype_eol ||
            token.type == isc_tokentype_eof)
            return(DNS_R_UNEXPECTEDEND);
        return (DNS_R_UNEXPECTED);
    }

    dns_name_init(&name, NULL);
    buffer_fromregion(&buffer, &token.value.as_region,
              ISC_BUFFERTYPE_TEXT);
    origin = (origin != NULL) ? origin : dns_rootname;
    result = dns_name_fromtext(&name, &buffer, origin, downcase, target);
    if (result != DNS_R_SUCCESS)
        return (result);

    options |= ISC_LEXOPT_NUMBER;
    for (i = 0; i < 5; i++) {
        if (isc_lex_gettoken(lexer, options, &token) != ISC_R_SUCCESS)
            return (DNS_R_UNEXPECTED);
        if (token.type != isc_tokentype_number) {
            isc_lex_ungettoken(lexer, &token);
            if (token.type == isc_tokentype_eol ||
                token.type == isc_tokentype_eof)
                return(DNS_R_UNEXPECTEDEND);
            return (DNS_R_UNEXPECTED);
        }

        result = uint32_tobuffer(token.value.as_ulong, target);
        if (result != DNS_R_SUCCESS)
            return (result);
    }
    return (DNS_R_SUCCESS);
}

static dns_result_t
totext_soa(dns_rdata_t *rdata, dns_name_t *origin, isc_buffer_t *target) {
    isc_region_t dregion;
    dns_name_t mname;
    dns_name_t rname;
    dns_name_t prefix;
    dns_result_t result;
    isc_boolean_t sub;
    int i;

    REQUIRE(rdata->type == 6);

    dns_name_init(&mname, NULL);
    dns_name_init(&rname, NULL);
    dns_name_init(&prefix, NULL);

    dns_rdata_toregion(rdata, &dregion);

    dns_name_fromregion(&mname, &dregion);
    isc_region_consume(&dregion, name_length(&mname));

    dns_name_fromregion(&rname, &dregion);
    isc_region_consume(&dregion, name_length(&rname));

    sub = name_prefix(&mname, origin, &prefix);
    result = dns_name_totext(&prefix, sub, target);
    if (result != DNS_R_SUCCESS)
        return (result);

    result = str_totext(" ", target);
    if (result != DNS_R_SUCCESS)
        return (result);

    sub = name_prefix(&rname, origin, &prefix);
    result = dns_name_totext(&prefix, sub, target);
    if (result != DNS_R_SUCCESS)
        return (result);

    for (i = 0; i < 5 ; i++) {
        char buf[sizeof "2147483647"];
        unsigned long num;

        result = str_totext(" ", target);
        if (result != DNS_R_SUCCESS)
            return (result);

        num = uint32_fromregion(&dregion);
        isc_region_consume(&dregion, 4);
        sprintf(buf, "%lu", num);
        result = str_totext(buf, target);
        if (result != DNS_R_SUCCESS)
            return (result);
    }
    return (DNS_R_SUCCESS);
}

static dns_result_t
fromwire_soa(dns_rdataclass_t class, dns_rdatatype_t type,
         isc_buffer_t *source, dns_decompress_t *dctx,
         isc_boolean_t downcase, isc_buffer_t *target) {
        dns_name_t mname;
        dns_name_t rname;
    dns_result_t result;
    isc_region_t sregion;
    isc_region_t tregion;

    REQUIRE(type == 6);

    class = class;  /*unused*/

        dns_name_init(&mname, NULL);
        dns_name_init(&rname, NULL);

        result = dns_name_fromwire(&mname, source, dctx, downcase, target);
    if (result != DNS_R_SUCCESS)
        return (result);

        result = dns_name_fromwire(&rname, source, dctx, downcase, target);
    if (result != DNS_R_SUCCESS)
        return (result);

    isc_buffer_active(source, &sregion);
    isc_buffer_available(target, &tregion);

    if (sregion.length < 20)
        return (DNS_R_UNEXPECTEDEND);
    if (tregion.length < 20)
        return (DNS_R_NOSPACE);

    memcpy(tregion.base, sregion.base, 20);
    isc_buffer_forward(source, 20);
    isc_buffer_add(target, 20);
    return (DNS_R_SUCCESS);
}

static dns_result_t
towire_soa(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
    isc_region_t sregion;
    isc_region_t tregion;
    dns_name_t mname;
    dns_name_t rname;
    dns_result_t result;

    REQUIRE(rdata->type == 6);

    dns_name_init(&mname, NULL);
    dns_name_init(&rname, NULL);

    dns_rdata_toregion(rdata, &sregion);
    dns_name_fromregion(&mname, &sregion);
    isc_region_consume(&sregion, name_length(&mname));
    result = dns_name_towire(&mname, cctx, target);
    if (result != DNS_R_SUCCESS)
        return (result);

    dns_name_fromregion(&rname, &sregion);
    isc_region_consume(&sregion, name_length(&rname));
    result = dns_name_towire(&rname, cctx, target);
    if (result != DNS_R_SUCCESS)
        return (result);

    isc_buffer_available(target, &tregion);
    if (tregion.length < 20)
        return (DNS_R_NOSPACE);

    memcpy(tregion.base, sregion.base, 20);
    isc_buffer_add(target, 20);
    return (DNS_R_SUCCESS);
}

static int
compare_soa(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
    isc_region_t region1;
    isc_region_t region2;
    dns_name_t name1;
    dns_name_t name2;
    int result;

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->class == rdata2->class);
    REQUIRE(rdata1->type == 6);

    dns_name_init(&name1, NULL);
    dns_name_init(&name2, NULL);

    dns_rdata_toregion(rdata1, &region1);
    dns_rdata_toregion(rdata2, &region1);

    dns_name_fromregion(&name1, &region1);
    dns_name_fromregion(&name2, &region2);

    result = dns_name_compare(&name1, &name2);
    if (result != 0)
        return (result);

    isc_region_consume(&region1, name1.length);
    isc_region_consume(&region2, name2.length);

    dns_name_init(&name1, NULL);
    dns_name_init(&name2, NULL);

    dns_name_fromregion(&name1, &region1);
    dns_name_fromregion(&name2, &region2);

    result = dns_name_compare(&name1, &name2);
    if (result != 0)
        return (result);

    isc_region_consume(&region1, name1.length);
    isc_region_consume(&region2, name2.length);

    result = memcmp(region1.base, region2.base, 12);
    if (result != 0)
        return ((result < 0) ? -1 : 1);

    return (0);
}

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

    REQUIRE(type == 6);

    class = class;  /*unused*/

    source = source;
    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}

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

    REQUIRE(rdata->type == 6);

    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}
#endif  /* RDATA_GENERIC_SOA_6_H */