rdata/generic/minfo_14.c

	minfo_14.c revision 499b34cea04a46823d003d4c0520c8b03e8513cb
/*
 * Copyright (C) 1998-2001  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: minfo_14.c,v 1.36 2001/01/09 21:54:20 bwelling Exp $ */

/* reviewed: Wed Mar 15 17:45:32 PST 2000 by brister */

#ifndef RDATA_GENERIC_MINFO_14_C
#define RDATA_GENERIC_MINFO_14_C

#define RRTYPE_MINFO_ATTRIBUTES (0)

static inline isc_result_t
fromtext_minfo(ARGS_FROMTEXT) {
    isc_token_t token;
    dns_name_t name;
    isc_buffer_t buffer;
    int i;

    REQUIRE(type == 14);

    UNUSED(rdclass);

    for (i = 0; i < 2 ; i++) {
        RETERR(isc_lex_getmastertoken(lexer, &token,
                          isc_tokentype_string,
                          ISC_FALSE));
        dns_name_init(&name, NULL);
        buffer_fromregion(&buffer, &token.value.as_region);
        origin = (origin != NULL) ? origin : dns_rootname;
        RETERR(dns_name_fromtext(&name, &buffer, origin,
                     downcase, target));
    }
    return (ISC_R_SUCCESS);
}

static inline isc_result_t
totext_minfo(ARGS_TOTEXT) {
    isc_region_t region;
    dns_name_t rmail;
    dns_name_t email;
    dns_name_t prefix;
    isc_boolean_t sub;

    REQUIRE(rdata->type == 14);
    REQUIRE(rdata->length != 0);

    dns_name_init(&rmail, NULL);
    dns_name_init(&email, NULL);
    dns_name_init(&prefix, NULL);

    dns_rdata_toregion(rdata, &region);

    dns_name_fromregion(&rmail, &region);
    isc_region_consume(&region, rmail.length);

    dns_name_fromregion(&email, &region);
    isc_region_consume(&region, email.length);

    sub = name_prefix(&rmail, tctx->origin, &prefix);

    RETERR(dns_name_totext(&prefix, sub, target));

    RETERR(str_totext(" ", target));

    sub = name_prefix(&email, tctx->origin, &prefix);
    return (dns_name_totext(&prefix, sub, target));
}

static inline isc_result_t
fromwire_minfo(ARGS_FROMWIRE) {
        dns_name_t rmail;
        dns_name_t email;

    REQUIRE(type == 14);

    dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);

    UNUSED(rdclass);

        dns_name_init(&rmail, NULL);
        dns_name_init(&email, NULL);

        RETERR(dns_name_fromwire(&rmail, source, dctx, downcase, target));
        return (dns_name_fromwire(&email, source, dctx, downcase, target));
}

static inline isc_result_t
towire_minfo(ARGS_TOWIRE) {
    isc_region_t region;
    dns_name_t rmail;
    dns_name_t email;

    REQUIRE(rdata->type == 14);
    REQUIRE(rdata->length != 0);

    dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);

    dns_name_init(&rmail, NULL);
    dns_name_init(&email, NULL);

    dns_rdata_toregion(rdata, &region);

    dns_name_fromregion(&rmail, &region);
    isc_region_consume(&region, name_length(&rmail));

    RETERR(dns_name_towire(&rmail, cctx, target));

    dns_name_fromregion(&rmail, &region);
    isc_region_consume(&region, rmail.length);

    return (dns_name_towire(&rmail, cctx, target));
}

static inline int
compare_minfo(ARGS_COMPARE) {
    isc_region_t region1;
    isc_region_t region2;
    dns_name_t name1;
    dns_name_t name2;
    int order;

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == 14);
    REQUIRE(rdata1->length != 0);
    REQUIRE(rdata2->length != 0);

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

    dns_rdata_toregion(rdata1, &region1);
    dns_rdata_toregion(rdata2, &region2);

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

    order = dns_name_rdatacompare(&name1, &name2);
    if (order != 0)
        return (order);

    isc_region_consume(&region1, name_length(&name1));
    isc_region_consume(&region2, name_length(&name2));

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

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

    order = dns_name_rdatacompare(&name1, &name2);
    return (order);
}

static inline isc_result_t
fromstruct_minfo(ARGS_FROMSTRUCT) {
    dns_rdata_minfo_t *minfo = source;
    isc_region_t region;

    REQUIRE(type == 14);
    REQUIRE(source != NULL);
    REQUIRE(minfo->common.rdtype == type);
    REQUIRE(minfo->common.rdclass == rdclass);

    UNUSED(rdclass);

    dns_name_toregion(&minfo->rmailbox, &region);
    RETERR(isc_buffer_copyregion(target, &region));
    dns_name_toregion(&minfo->emailbox, &region);
    return (isc_buffer_copyregion(target, &region));
}

static inline isc_result_t
tostruct_minfo(ARGS_TOSTRUCT) {
    dns_rdata_minfo_t *minfo = target;
    isc_region_t region;
    dns_name_t name;
    isc_result_t result;

    REQUIRE(rdata->type == 14);
    REQUIRE(target != NULL);
    REQUIRE(rdata->length != 0);

    minfo->common.rdclass = rdata->rdclass;
    minfo->common.rdtype = rdata->type;
    ISC_LINK_INIT(&minfo->common, link);

    dns_name_init(&name, NULL);
    dns_rdata_toregion(rdata, &region);
    dns_name_fromregion(&name, &region);
    dns_name_init(&minfo->rmailbox, NULL);
    RETERR(name_duporclone(&name, mctx, &minfo->rmailbox));
    isc_region_consume(&region, name_length(&name));

    dns_name_fromregion(&name, &region);
    dns_name_init(&minfo->emailbox, NULL);
    result = name_duporclone(&name, mctx, &minfo->emailbox);
    if (result != ISC_R_SUCCESS)
        goto cleanup;
    minfo->mctx = mctx;
    return (ISC_R_SUCCESS);

 cleanup:
    if (mctx != NULL)
        dns_name_free(&minfo->rmailbox, mctx);
    return (ISC_R_NOMEMORY);
}

static inline void
freestruct_minfo(ARGS_FREESTRUCT) {
    dns_rdata_minfo_t *minfo = source;

    REQUIRE(source != NULL);
    REQUIRE(minfo->common.rdtype == 14);

    if (minfo->mctx == NULL)
        return;

    dns_name_free(&minfo->rmailbox, minfo->mctx);
    dns_name_free(&minfo->emailbox, minfo->mctx);
    minfo->mctx = NULL;
}

static inline isc_result_t
additionaldata_minfo(ARGS_ADDLDATA) {
    REQUIRE(rdata->type == 14);

    UNUSED(rdata);
    UNUSED(add);
    UNUSED(arg);

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_minfo(ARGS_DIGEST) {
    isc_region_t r;
    dns_name_t name;
    isc_result_t result;

    REQUIRE(rdata->type == 14);

    dns_rdata_toregion(rdata, &r);
    dns_name_init(&name, NULL);
    dns_name_fromregion(&name, &r);
    result = dns_name_digest(&name, digest, arg);
    if (result != ISC_R_SUCCESS)
        return (result);
    isc_region_consume(&r, name_length(&name));
    dns_name_init(&name, NULL);
    dns_name_fromregion(&name, &r);

    return (dns_name_digest(&name, digest, arg));
}

#endif  /* RDATA_GENERIC_MINFO_14_C */