/*

 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")

 *

 * SPDX-License-Identifier: MPL-2.0

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, you can obtain one at https://mozilla.org/MPL/2.0/.

 *

 * See the COPYRIGHT file distributed with this work for additional

 * information regarding copyright ownership.

 */

/* RFC2538 */

#ifndef RDATA_GENERIC_CERT_37_C

#define RDATA_GENERIC_CERT_37_C

#define RRTYPE_CERT_ATTRIBUTES (0)

static isc_result_t

fromtext_cert(ARGS_FROMTEXT) {

  isc_token_t token;

  dns_secalg_t secalg;

  dns_cert_t cert;

  REQUIRE(type == dns_rdatatype_cert);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(origin);

  UNUSED(options);

  UNUSED(callbacks);

  /*

   * Cert type.

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,

              false));

  RETTOK(dns_cert_fromtext(&cert, &token.value.as_textregion));

  RETERR(uint16_tobuffer(cert, target));

  /*

   * Key tag.

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,

              false));

  if (token.value.as_ulong > 0xffffU) {

    RETTOK(ISC_R_RANGE);

  }

  RETERR(uint16_tobuffer(token.value.as_ulong, target));

  /*

   * Algorithm.

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,

              false));

  RETTOK(dns_secalg_fromtext(&secalg, &token.value.as_textregion));

  RETERR(mem_tobuffer(target, &secalg, 1));

  return isc_base64_tobuffer(lexer, target, -2);

}

static isc_result_t

totext_cert(ARGS_TOTEXT) {

  isc_region_t sr;

  char buf[sizeof("64000 ")];

  unsigned int n;

  REQUIRE(rdata->type == dns_rdatatype_cert);

  REQUIRE(rdata->length != 0);

  UNUSED(tctx);

  dns_rdata_toregion(rdata, &sr);

  /*

   * Type.

   */

  n = uint16_fromregion(&sr);

  isc_region_consume(&sr, 2);

  RETERR(dns_cert_totext((dns_cert_t)n, target));

  RETERR(str_totext(" ", target));

  /*

   * Key tag.

   */

  n = uint16_fromregion(&sr);

  isc_region_consume(&sr, 2);

  snprintf(buf, sizeof(buf), "%u ", n);

  RETERR(str_totext(buf, target));

  /*

   * Algorithm.

   */

  RETERR(dns_secalg_totext(sr.base[0], target));

  isc_region_consume(&sr, 1);

  /*

   * Cert.

   */

  if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) {

    RETERR(str_totext(" (", target));

  }

  RETERR(str_totext(tctx->linebreak, target));

  if (tctx->width == 0) { /* No splitting */

    RETERR(isc_base64_totext(&sr, 60, "", target));

  } else {

    RETERR(isc_base64_totext(&sr, tctx->width - 2, tctx->linebreak,

           target));

  }

  if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) {

    RETERR(str_totext(" )", target));

  }

  return ISC_R_SUCCESS;

}

static isc_result_t

fromwire_cert(ARGS_FROMWIRE) {

  isc_region_t sr;

  REQUIRE(type == dns_rdatatype_cert);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(dctx);

  isc_buffer_activeregion(source, &sr);

  if (sr.length < 6) {

    return ISC_R_UNEXPECTEDEND;

  }

  isc_buffer_forward(source, sr.length);

  return mem_tobuffer(target, sr.base, sr.length);

}

static isc_result_t

towire_cert(ARGS_TOWIRE) {

  isc_region_t sr;

  REQUIRE(rdata->type == dns_rdatatype_cert);

  REQUIRE(rdata->length != 0);

  UNUSED(cctx);

  dns_rdata_toregion(rdata, &sr);

  return mem_tobuffer(target, sr.base, sr.length);

}

static int

compare_cert(ARGS_COMPARE) {

  isc_region_t r1;

  isc_region_t r2;

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

  REQUIRE(rdata1->rdclass == rdata2->rdclass);

  REQUIRE(rdata1->type == dns_rdatatype_cert);

  REQUIRE(rdata1->length != 0);

  REQUIRE(rdata2->length != 0);

  dns_rdata_toregion(rdata1, &r1);

  dns_rdata_toregion(rdata2, &r2);

  return isc_region_compare(&r1, &r2);

}

static isc_result_t

fromstruct_cert(ARGS_FROMSTRUCT) {

  dns_rdata_cert_t *cert = source;

  REQUIRE(type == dns_rdatatype_cert);

  REQUIRE(cert != NULL);

  REQUIRE(cert->common.rdtype == type);

  REQUIRE(cert->common.rdclass == rdclass);

  UNUSED(type);

  UNUSED(rdclass);

  RETERR(uint16_tobuffer(cert->type, target));

  RETERR(uint16_tobuffer(cert->key_tag, target));

  RETERR(uint8_tobuffer(cert->algorithm, target));

  return mem_tobuffer(target, cert->certificate, cert->length);

}

static isc_result_t

tostruct_cert(ARGS_TOSTRUCT) {

  dns_rdata_cert_t *cert = target;

  isc_region_t region;

  REQUIRE(rdata->type == dns_rdatatype_cert);

  REQUIRE(cert != NULL);

  REQUIRE(rdata->length != 0);

  DNS_RDATACOMMON_INIT(cert, rdata->type, rdata->rdclass);

  dns_rdata_toregion(rdata, &region);

  cert->type = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

  cert->key_tag = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

  cert->algorithm = uint8_fromregion(&region);

  isc_region_consume(&region, 1);

  cert->length = region.length;

  cert->certificate = mem_maybedup(mctx, region.base, region.length);

  cert->mctx = mctx;

  return ISC_R_SUCCESS;

}

static void

freestruct_cert(ARGS_FREESTRUCT) {

  dns_rdata_cert_t *cert = source;

  REQUIRE(cert != NULL);

  REQUIRE(cert->common.rdtype == dns_rdatatype_cert);

  if (cert->mctx == NULL) {

    return;

  }

  if (cert->certificate != NULL) {

    isc_mem_free(cert->mctx, cert->certificate);

  }

  cert->mctx = NULL;

}

static isc_result_t

additionaldata_cert(ARGS_ADDLDATA) {

  REQUIRE(rdata->type == dns_rdatatype_cert);

  UNUSED(rdata);

  UNUSED(owner);

  UNUSED(add);

  UNUSED(arg);

  return ISC_R_SUCCESS;

}

static isc_result_t

digest_cert(ARGS_DIGEST) {

  isc_region_t r;

  REQUIRE(rdata->type == dns_rdatatype_cert);

  dns_rdata_toregion(rdata, &r);

  return (digest)(arg, &r);

}

static bool

checkowner_cert(ARGS_CHECKOWNER) {

  REQUIRE(type == dns_rdatatype_cert);

  UNUSED(name);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(wildcard);

  return true;

}

static bool

checknames_cert(ARGS_CHECKNAMES) {

  REQUIRE(rdata->type == dns_rdatatype_cert);

  UNUSED(rdata);

  UNUSED(owner);

  UNUSED(bad);

  return true;

}

static int

casecompare_cert(ARGS_COMPARE) {

  return compare_cert(rdata1, rdata2);

}

#endif /* RDATA_GENERIC_CERT_37_C */