/*

 * 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_DSYNC_66_C

#define RDATA_GENERIC_DSYNC_66_C

#include <string.h>

#include <isc/net.h>

#include <dns/dsync.h>

#include <dns/fixedname.h>

#define RRTYPE_DSYNC_ATTRIBUTES (0)

static isc_result_t

fromtext_dsync(ARGS_FROMTEXT) {

  isc_token_t token;

  isc_result_t result;

  dns_fixedname_t fn;

  dns_name_t *name = dns_fixedname_initname(&fn);

  isc_buffer_t buffer;

  dns_rdatatype_t rrtype;

  dns_dsyncscheme_t scheme;

  bool ok = true;

  REQUIRE(type == dns_rdatatype_dsync);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(callbacks);

  /*

   * RRtype

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,

              false));

  result = dns_rdatatype_fromtext(&rrtype, &token.value.as_textregion);

  if (result != ISC_R_SUCCESS && result != ISC_R_NOTIMPLEMENTED) {

    char *e = NULL;

    long i = strtol(DNS_AS_STR(token), &e, 10);

    if (i < 0 || i > 65535) {

      RETTOK(ISC_R_RANGE);

    }

    if (*e != 0) {

      RETTOK(result);

    }

    rrtype = (dns_rdatatype_t)i;

  }

  RETERR(uint16_tobuffer(rrtype, target));

  /*

   * Scheme

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,

              false));

  RETERR(dns_dsyncscheme_fromtext(&scheme, &token.value.as_textregion));

  RETERR(uint8_tobuffer(scheme, target));

  /*

   * Port

   */

  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));

  /*

   * Target

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,

              false));

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

  if (origin == NULL) {

    origin = dns_rootname;

  }

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

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

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

    ok = dns_name_ishostname(name, false);

  }

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

    RETTOK(DNS_R_BADNAME);

  }

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

    warn_badname(name, lexer, callbacks);

  }

  return ISC_R_SUCCESS;

}

static isc_result_t

totext_dsync(ARGS_TOTEXT) {

  isc_region_t region;

  dns_name_t name;

  dns_name_t prefix;

  unsigned int opts;

  char buf[sizeof("TYPE64000")];

  unsigned short num;

  dns_rdatatype_t type;

  dns_dsyncscheme_t scheme;

  REQUIRE(rdata->type == dns_rdatatype_dsync);

  REQUIRE(rdata->length != 0);

  dns_name_init(&name);

  dns_name_init(&prefix);

  dns_rdata_toregion(rdata, &region);

  /*

   * Type.

   */

  type = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

  /*

   * XXXAG We should have something like dns_rdatatype_isknown()

   * that does the right thing with type 0.

   */

  if (dns_rdatatype_isknown(type) && type != 0) {

    RETERR(dns_rdatatype_totext(type, target));

  } else {

    snprintf(buf, sizeof(buf), "TYPE%u", type);

    RETERR(str_totext(buf, target));

  }

  RETERR(str_totext(" ", target));

  /*

   * Scheme.

   */

  scheme = uint8_fromregion(&region);

  isc_region_consume(&region, 1);

  RETERR(dns_dsyncscheme_totext(scheme, target));

  RETERR(str_totext(" ", target));

  /*

   * Port

   */

  num = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

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

  RETERR(str_totext(buf, target));

  RETERR(str_totext(" ", target));

  /*

   * Target

   */

  dns_name_fromregion(&name, &region);

  opts = name_prefix(&name, tctx->origin, &prefix) ? DNS_NAME_OMITFINALDOT

               : 0;

  return dns_name_totext(&prefix, opts, target);

}

static isc_result_t

fromwire_dsync(ARGS_FROMWIRE) {

  dns_name_t name;

  isc_region_t sregion;

  REQUIRE(type == dns_rdatatype_dsync);

  UNUSED(type);

  UNUSED(rdclass);

  dctx = dns_decompress_setpermitted(dctx, false);

  dns_name_init(&name);

  isc_buffer_activeregion(source, &sregion);

  if (sregion.length < 5) {

    return ISC_R_UNEXPECTEDEND;

  }

  RETERR(mem_tobuffer(target, sregion.base, 5));

  isc_buffer_forward(source, 5);

  return dns_name_fromwire(&name, source, dctx, target);

}

static isc_result_t

towire_dsync(ARGS_TOWIRE) {

  dns_name_t name;

  isc_region_t region;

  REQUIRE(rdata->type == dns_rdatatype_dsync);

  REQUIRE(rdata->length != 0);

  dns_compress_setpermitted(cctx, false);

  dns_rdata_toregion(rdata, &region);

  RETERR(mem_tobuffer(target, region.base, 5));

  isc_region_consume(&region, 5);

  dns_name_init(&name);

  dns_name_fromregion(&name, &region);

  return dns_name_towire(&name, cctx, target);

}

static int

compare_dsync(ARGS_COMPARE) {

  isc_region_t region1;

  isc_region_t region2;

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

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

  REQUIRE(rdata1->type == dns_rdatatype_dsync);

  REQUIRE(rdata1->length != 0);

  REQUIRE(rdata2->length != 0);

  dns_rdata_toregion(rdata1, &region1);

  dns_rdata_toregion(rdata2, &region2);

  return isc_region_compare(&region1, &region2);

}

static isc_result_t

fromstruct_dsync(ARGS_FROMSTRUCT) {

  dns_rdata_dsync_t *dsync = source;

  isc_region_t region;

  REQUIRE(type == dns_rdatatype_dsync);

  REQUIRE(dsync != NULL);

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

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

  UNUSED(type);

  UNUSED(rdclass);

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

  RETERR(uint8_tobuffer(dsync->scheme, target));

  RETERR(uint16_tobuffer(dsync->port, target));

  dns_name_toregion(&dsync->target, &region);

  return isc_buffer_copyregion(target, &region);

}

static isc_result_t

tostruct_dsync(ARGS_TOSTRUCT) {

  isc_region_t region;

  dns_rdata_dsync_t *dsync = target;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_dsync);

  REQUIRE(dsync != NULL);

  REQUIRE(rdata->length != 0);

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

  dns_name_init(&name);

  dns_rdata_toregion(rdata, &region);

  dsync->type = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

  dsync->scheme = uint8_fromregion(&region);

  isc_region_consume(&region, 1);

  dsync->port = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

  dns_name_fromregion(&name, &region);

  dns_name_init(&dsync->target);

  name_duporclone(&name, mctx, &dsync->target);

  dsync->mctx = mctx;

  return ISC_R_SUCCESS;

}

static void

freestruct_dsync(ARGS_FREESTRUCT) {

  dns_rdata_dsync_t *dsync = source;

  REQUIRE(dsync != NULL);

  REQUIRE(dsync->common.rdtype == dns_rdatatype_dsync);

  if (dsync->mctx == NULL) {

    return;

  }

  dns_name_free(&dsync->target, dsync->mctx);

  dsync->mctx = NULL;

}

static isc_result_t

additionaldata_dsync(ARGS_ADDLDATA) {

  dns_name_t name;

  isc_region_t region;

  REQUIRE(rdata->type == dns_rdatatype_dsync);

  UNUSED(owner);

  dns_name_init(&name);

  dns_rdata_toregion(rdata, &region);

  isc_region_consume(&region, 5);

  dns_name_fromregion(&name, &region);

  if (dns_name_equal(&name, dns_rootname)) {

    return ISC_R_SUCCESS;

  }

  return (add)(arg, &name, dns_rdatatype_a, NULL DNS__DB_FILELINE);

}

static isc_result_t

digest_dsync(ARGS_DIGEST) {

  isc_region_t r1;

  REQUIRE(rdata->type == dns_rdatatype_dsync);

  dns_rdata_toregion(rdata, &r1);

  return (digest)(arg, &r1);

}

static bool

checkowner_dsync(ARGS_CHECKOWNER) {

  REQUIRE(type == dns_rdatatype_dsync);

  UNUSED(name);

  UNUSED(rdclass);

  UNUSED(type);

  UNUSED(wildcard);

  return true;

}

static bool

checknames_dsync(ARGS_CHECKNAMES) {

  isc_region_t region;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_dsync);

  REQUIRE(rdata->length > 5);

  UNUSED(owner);

  dns_rdata_toregion(rdata, &region);

  isc_region_consume(&region, 5);

  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;

  }

  return true;

}

static int

casecompare_dsync(ARGS_COMPARE) {

  return compare_dsync(rdata1, rdata2);

}

#endif /* RDATA_GENERIC_DSYNC_66_C */