/*

 * 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.

 */

#ifndef RDATA_GENERIC_SOA_6_C

#define RDATA_GENERIC_SOA_6_C

#define RRTYPE_SOA_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON)

static isc_result_t

fromtext_soa(ARGS_FROMTEXT) {

  isc_token_t token;

  isc_buffer_t buffer;

  int i;

  uint32_t n;

  bool ok;

  REQUIRE(type == dns_rdatatype_soa);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(callbacks);

  if (origin == NULL) {

    origin = dns_rootname;

  }

  for (i = 0; i < 2; i++) {

    dns_fixedname_t fn;

    dns_name_t *name = dns_fixedname_initname(&fn);

    RETERR(isc_lex_getmastertoken(lexer, &token,

                isc_tokentype_string, false));

    buffer_fromregion(&buffer, &token.value.as_region);

    RETTOK(dns_name_fromtext(name, &buffer, origin, options));

    RETTOK(dns_name_towire(name, NULL, target));

    ok = true;

    if ((options & DNS_RDATA_CHECKNAMES) != 0) {

      switch (i) {

      case 0:

        ok = dns_name_ishostname(name, false);

        break;

      case 1:

        ok = dns_name_ismailbox(name);

        break;

      }

    }

    if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) {

      RETTOK(DNS_R_BADNAME);

    }

    if (!ok && callbacks != NULL) {

      warn_badname(name, lexer, callbacks);

    }

  }

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,

              false));

  RETERR(uint32_tobuffer(token.value.as_ulong, target));

  for (i = 0; i < 4; i++) {

    RETERR(isc_lex_getmastertoken(lexer, &token,

                isc_tokentype_string, false));

    RETTOK(dns_counter_fromtext(&token.value.as_textregion, &n));

    RETERR(uint32_tobuffer(n, target));

  }

  return ISC_R_SUCCESS;

}

static const char *soa_fieldnames[5] = { "serial", "refresh", "retry", "expire",

           "minimum" };

static isc_result_t

totext_soa(ARGS_TOTEXT) {

  isc_region_t dregion;

  dns_name_t mname;

  dns_name_t rname;

  dns_name_t prefix;

  unsigned int opts;

  int i;

  bool multiline;

  bool comm;

  REQUIRE(rdata->type == dns_rdatatype_soa);

  REQUIRE(rdata->length != 0);

  multiline = ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0);

  if (multiline) {

    comm = ((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0);

  } else {

    comm = false;

  }

  dns_name_init(&mname);

  dns_name_init(&rname);

  dns_name_init(&prefix);

  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));

  opts = name_prefix(&mname, tctx->origin, &prefix)

           ? DNS_NAME_OMITFINALDOT

           : 0;

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

  RETERR(str_totext(" ", target));

  opts = name_prefix(&rname, tctx->origin, &prefix)

           ? DNS_NAME_OMITFINALDOT

           : 0;

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

  if (multiline) {

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

  }

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

  for (i = 0; i < 5; i++) {

    char buf[sizeof("0123456789 ; ")];

    unsigned long num;

    num = uint32_fromregion(&dregion);

    isc_region_consume(&dregion, 4);

    snprintf(buf, sizeof(buf), comm ? "%-10lu ; " : "%lu", num);

    RETERR(str_totext(buf, target));

    if (comm) {

      RETERR(str_totext(soa_fieldnames[i], target));

      /* Print times in week/day/hour/minute/second form */

      if (i >= 1) {

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

        RETERR(dns_ttl_totext(num, true, true, target));

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

      }

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

    } else if (i < 4) {

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

    }

  }

  if (multiline) {

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

  }

  return ISC_R_SUCCESS;

}

static isc_result_t

fromwire_soa(ARGS_FROMWIRE) {

  dns_name_t mname;

  dns_name_t rname;

  isc_region_t sregion;

  isc_region_t tregion;

  REQUIRE(type == dns_rdatatype_soa);

  UNUSED(type);

  UNUSED(rdclass);

  dns_decompress_setpermitted(dctx, true);

  dns_name_init(&mname);

  dns_name_init(&rname);

  RETERR(dns_name_fromwire(&mname, source, dctx, target));

  RETERR(dns_name_fromwire(&rname, source, dctx, target));

  isc_buffer_activeregion(source, &sregion);

  isc_buffer_availableregion(target, &tregion);

  if (sregion.length < 20) {

    return ISC_R_UNEXPECTEDEND;

  }

  if (tregion.length < 20) {

    return ISC_R_NOSPACE;

  }

  memmove(tregion.base, sregion.base, 20);

  isc_buffer_forward(source, 20);

  isc_buffer_add(target, 20);

  return ISC_R_SUCCESS;

}

static int

compare_soa(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 == dns_rdatatype_soa);

  REQUIRE(rdata1->length != 0);

  REQUIRE(rdata2->length != 0);

  dns_name_init(&name1);

  dns_name_init(&name2);

  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);

  dns_name_init(&name2);

  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));

  return isc_region_compare(&region1, &region2);

}

static isc_result_t

fromstruct_soa(ARGS_FROMSTRUCT) {

  dns_rdata_soa_t *soa = source;

  isc_region_t region;

  REQUIRE(type == dns_rdatatype_soa);

  REQUIRE(soa != NULL);

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

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

  UNUSED(type);

  UNUSED(rdclass);

  dns_name_toregion(&soa->origin, &region);

  RETERR(isc_buffer_copyregion(target, &region));

  dns_name_toregion(&soa->contact, &region);

  RETERR(isc_buffer_copyregion(target, &region));

  RETERR(uint32_tobuffer(soa->serial, target));

  RETERR(uint32_tobuffer(soa->refresh, target));

  RETERR(uint32_tobuffer(soa->retry, target));

  RETERR(uint32_tobuffer(soa->expire, target));

  return uint32_tobuffer(soa->minimum, target);

}

static isc_result_t

tostruct_soa(ARGS_TOSTRUCT) {

  isc_region_t region;

  dns_rdata_soa_t *soa = target;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_soa);

  REQUIRE(soa != NULL);

  REQUIRE(rdata->length != 0);

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

  dns_rdata_toregion(rdata, &region);

  dns_name_init(&name);

  dns_name_fromregion(&name, &region);

  isc_region_consume(&region, name_length(&name));

  dns_name_init(&soa->origin);

  dns_name_clone(&name, &soa->origin);

  dns_name_fromregion(&name, &region);

  isc_region_consume(&region, name_length(&name));

  dns_name_init(&soa->contact);

  dns_name_clone(&name, &soa->contact);

  soa->serial = uint32_fromregion(&region);

  isc_region_consume(&region, 4);

  soa->refresh = uint32_fromregion(&region);

  isc_region_consume(&region, 4);

  soa->retry = uint32_fromregion(&region);

  isc_region_consume(&region, 4);

  soa->expire = uint32_fromregion(&region);

  isc_region_consume(&region, 4);

  soa->minimum = uint32_fromregion(&region);

  return ISC_R_SUCCESS;

}

static isc_result_t

additionaldata_soa(ARGS_ADDLDATA) {

  REQUIRE(rdata->type == dns_rdatatype_soa);

  UNUSED(rdata);

  UNUSED(owner);

  UNUSED(add);

  UNUSED(arg);

  return ISC_R_SUCCESS;

}

static isc_result_t

digest_soa(ARGS_DIGEST) {

  isc_region_t r;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_soa);

  dns_rdata_toregion(rdata, &r);

  dns_name_init(&name);

  dns_name_fromregion(&name, &r);

  RETERR(dns_name_digest(&name, digest, arg));

  isc_region_consume(&r, name_length(&name));

  dns_name_init(&name);

  dns_name_fromregion(&name, &r);

  RETERR(dns_name_digest(&name, digest, arg));

  isc_region_consume(&r, name_length(&name));

  return (digest)(arg, &r);

}

static bool

checkowner_soa(ARGS_CHECKOWNER) {

  REQUIRE(type == dns_rdatatype_soa);

  UNUSED(name);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(wildcard);

  return true;

}

static bool

checknames_soa(ARGS_CHECKNAMES) {

  isc_region_t region;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_soa);

  UNUSED(owner);

  dns_rdata_toregion(rdata, &region);

  dns_name_init(&name);

  dns_name_fromregion(&name, &region);

  if (!dns_name_ishostname(&name, false)) {

    if (bad != NULL) {

      dns_name_clone(&name, bad);

    }

    return false;

  }

  isc_region_consume(&region, name_length(&name));

  dns_name_fromregion(&name, &region);

  if (!dns_name_ismailbox(&name)) {

    if (bad != NULL) {

      dns_name_clone(&name, bad);

    }

    return false;

  }

  return true;

}

static int

casecompare_soa(ARGS_COMPARE) {

  return compare_soa(rdata1, rdata2);

}

#endif /* RDATA_GENERIC_SOA_6_C */