text: /*
   * Copyright (C) 2004, 2005, 2007, 2009, 2012  Internet Systems Consortium, Inc. ("ISC")
   * Copyright (C) 2003  Internet Software Consortium.
   *
   * Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
   * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS.  IN NO EVENT SHALL ISC 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.
   */
  
  /* $Id$ */
  
  /*
   * Reviewed: Wed Mar 15 16:47:10 PST 2000 by halley.
   */
  
  /* RFC2535 */
  
  #ifndef RDATA_GENERIC_DNSKEY_48_C
  #define RDATA_GENERIC_DNSKEY_48_C
  
  #include <dst/dst.h>
  
  #define RRTYPE_DNSKEY_ATTRIBUTES (DNS_RDATATYPEATTR_DNSSEC)
  
  static inline isc_result_t
  fromtext_dnskey(ARGS_FROMTEXT) {
  	isc_token_t token;
  	dns_secalg_t alg;
  	dns_secproto_t proto;
  	dns_keyflags_t flags;
  
  	REQUIRE(type == 48);
  
  	UNUSED(type);
  	UNUSED(rdclass);
  	UNUSED(origin);
  	UNUSED(options);
  	UNUSED(callbacks);
  
  	/* flags */
  	RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  				      ISC_FALSE));
  	RETTOK(dns_keyflags_fromtext(&flags, &token.value.as_textregion));
  	RETERR(uint16_tobuffer(flags, target));
  
  	/* protocol */
  	RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  				      ISC_FALSE));
  	RETTOK(dns_secproto_fromtext(&proto, &token.value.as_textregion));
  	RETERR(mem_tobuffer(target, &proto, 1));
  
  	/* algorithm */
  	RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  				      ISC_FALSE));
  	RETTOK(dns_secalg_fromtext(&alg, &token.value.as_textregion));
  	RETERR(mem_tobuffer(target, &alg, 1));
  
  	/* No Key? */
  	if ((flags & 0xc000) == 0xc000)
  		return (ISC_R_SUCCESS);
  
  	return (isc_base64_tobuffer(lexer, target, -1));
  }
  
  static inline isc_result_t
  totext_dnskey(ARGS_TOTEXT) {
  	isc_region_t sr;
  	char buf[sizeof("64000")];
  	unsigned int flags;
  	unsigned char algorithm;
  	char namebuf[DNS_NAME_FORMATSIZE];
  
  	REQUIRE(rdata->type == 48);
  	REQUIRE(rdata->length != 0);
  
  	dns_rdata_toregion(rdata, &sr);
  
  	/* flags */
  	flags = uint16_fromregion(&sr);
  	isc_region_consume(&sr, 2);
  	sprintf(buf, "%u", flags);
  	RETERR(str_totext(buf, target));
  	RETERR(str_totext(" ", target));
  
  	/* protocol */
  	sprintf(buf, "%u", sr.base[0]);
  	isc_region_consume(&sr, 1);
  	RETERR(str_totext(buf, target));
  	RETERR(str_totext(" ", target));
  
  	/* algorithm */
  	algorithm = sr.base[0];
  	sprintf(buf, "%u", algorithm);
  	isc_region_consume(&sr, 1);
  	RETERR(str_totext(buf, target));
  
  	/* No Key? */
  	if ((flags & 0xc000) == 0xc000)
  		return (ISC_R_SUCCESS);
  
  	if ((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0 &&
  	     algorithm == DNS_KEYALG_PRIVATEDNS) {
  		dns_name_t name;
  		dns_name_init(&name, NULL);
  		dns_name_fromregion(&name, &sr);
  		dns_name_format(&name, namebuf, sizeof(namebuf));
  	} else
  		namebuf[0] = 0;
  
  	/* key */
  	if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
  		RETERR(str_totext(" (", target));
  	RETERR(str_totext(tctx->linebreak, target));
  	RETERR(isc_base64_totext(&sr, tctx->width - 2,
  				 tctx->linebreak, target));
  
  	if ((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0)
  		RETERR(str_totext(tctx->linebreak, target));
  	else if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
  		RETERR(str_totext(" ", target));
  
  	if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
  		RETERR(str_totext(")", target));
  
  	if ((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0) {
  		isc_region_t tmpr;
  
  		RETERR(str_totext(" ; key id = ", target));
  		dns_rdata_toregion(rdata, &tmpr);
  		sprintf(buf, "%u", dst_region_computeid(&tmpr, algorithm));
  		RETERR(str_totext(buf, target));
  		if (algorithm == DNS_KEYALG_PRIVATEDNS) {
  			RETERR(str_totext(tctx->linebreak, target));
  			RETERR(str_totext("; alg = ", target));
  			RETERR(str_totext(namebuf, target));
  		}
  	}
  	return (ISC_R_SUCCESS);
  }
  
  static inline isc_result_t
  fromwire_dnskey(ARGS_FROMWIRE) {
  	unsigned char algorithm;
  	isc_region_t sr;
  
  	REQUIRE(type == 48);
  
  	UNUSED(type);
  	UNUSED(rdclass);
  	UNUSED(dctx);
  	UNUSED(options);
  
  	isc_buffer_activeregion(source, &sr);
  	if (sr.length < 4)
  		return (ISC_R_UNEXPECTEDEND);
  
  	algorithm = sr.base[3];
  	RETERR(mem_tobuffer(target, sr.base, 4));
  	isc_region_consume(&sr, 4);
  	isc_buffer_forward(source, 4);
  
  	if (algorithm == DNS_KEYALG_PRIVATEDNS) {
  		dns_name_t name;
  		dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
  		dns_name_init(&name, NULL);
  		RETERR(dns_name_fromwire(&name, source, dctx, options, target));
  	}
  	isc_buffer_activeregion(source, &sr);
  	isc_buffer_forward(source, sr.length);
  	return (mem_tobuffer(target, sr.base, sr.length));
  }
  
  static inline isc_result_t
  towire_dnskey(ARGS_TOWIRE) {
  	isc_region_t sr;
  
  	REQUIRE(rdata->type == 48);
  	REQUIRE(rdata->length != 0);
  
  	UNUSED(cctx);
  
  	dns_rdata_toregion(rdata, &sr);
  	return (mem_tobuffer(target, sr.base, sr.length));
  }
  
  static inline int
  compare_dnskey(ARGS_COMPARE) {
  	isc_region_t r1;
  	isc_region_t r2;
  
  	REQUIRE(rdata1->type == rdata2->type);
  	REQUIRE(rdata1->rdclass == rdata2->rdclass);
  	REQUIRE(rdata1->type == 48);
  	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 inline isc_result_t
  fromstruct_dnskey(ARGS_FROMSTRUCT) {
  	dns_rdata_dnskey_t *dnskey = source;
  
  	REQUIRE(type == 48);
  	REQUIRE(source != NULL);
  	REQUIRE(dnskey->common.rdtype == type);
  	REQUIRE(dnskey->common.rdclass == rdclass);
  
  	UNUSED(type);
  	UNUSED(rdclass);
  
  	/* Flags */
  	RETERR(uint16_tobuffer(dnskey->flags, target));
  
  	/* Protocol */
  	RETERR(uint8_tobuffer(dnskey->protocol, target));
  
  	/* Algorithm */
  	RETERR(uint8_tobuffer(dnskey->algorithm, target));
  
  	/* Data */
  	return (mem_tobuffer(target, dnskey->data, dnskey->datalen));
  }
  
  static inline isc_result_t
  tostruct_dnskey(ARGS_TOSTRUCT) {
  	dns_rdata_dnskey_t *dnskey = target;
  	isc_region_t sr;
  
  	REQUIRE(rdata->type == 48);
  	REQUIRE(target != NULL);
  	REQUIRE(rdata->length != 0);
  
  	dnskey->common.rdclass = rdata->rdclass;
  	dnskey->common.rdtype = rdata->type;
  	ISC_LINK_INIT(&dnskey->common, link);
  
  	dns_rdata_toregion(rdata, &sr);
  
  	/* Flags */
  	if (sr.length < 2)
  		return (ISC_R_UNEXPECTEDEND);
  	dnskey->flags = uint16_fromregion(&sr);
  	isc_region_consume(&sr, 2);
  
  	/* Protocol */
  	if (sr.length < 1)
  		return (ISC_R_UNEXPECTEDEND);
  	dnskey->protocol = uint8_fromregion(&sr);
  	isc_region_consume(&sr, 1);
  
  	/* Algorithm */
  	if (sr.length < 1)
  		return (ISC_R_UNEXPECTEDEND);
  	dnskey->algorithm = uint8_fromregion(&sr);
  	isc_region_consume(&sr, 1);
  
  	/* Data */
  	dnskey->datalen = sr.length;
  	dnskey->data = mem_maybedup(mctx, sr.base, dnskey->datalen);
  	if (dnskey->data == NULL)
  		return (ISC_R_NOMEMORY);
  
  	dnskey->mctx = mctx;
  	return (ISC_R_SUCCESS);
  }
  
  static inline void
  freestruct_dnskey(ARGS_FREESTRUCT) {
  	dns_rdata_dnskey_t *dnskey = (dns_rdata_dnskey_t *) source;
  
  	REQUIRE(source != NULL);
  	REQUIRE(dnskey->common.rdtype == 48);
  
  	if (dnskey->mctx == NULL)
  		return;
  
  	if (dnskey->data != NULL)
  		isc_mem_free(dnskey->mctx, dnskey->data);
  	dnskey->mctx = NULL;
  }
  
  static inline isc_result_t
  additionaldata_dnskey(ARGS_ADDLDATA) {
  	REQUIRE(rdata->type == 48);
  
  	UNUSED(rdata);
  	UNUSED(add);
  	UNUSED(arg);
  
  	return (ISC_R_SUCCESS);
  }
  
  static inline isc_result_t
  digest_dnskey(ARGS_DIGEST) {
  	isc_region_t r;
  
  	REQUIRE(rdata->type == 48);
  
  	dns_rdata_toregion(rdata, &r);
  
  	return ((digest)(arg, &r));
  }
  
  static inline isc_boolean_t
  checkowner_dnskey(ARGS_CHECKOWNER) {
  
  	REQUIRE(type == 48);
  
  	UNUSED(name);
  	UNUSED(type);
  	UNUSED(rdclass);
  	UNUSED(wildcard);
  
  	return (ISC_TRUE);
  }
  
  static inline isc_boolean_t
  checknames_dnskey(ARGS_CHECKNAMES) {
  
  	REQUIRE(rdata->type == 48);
  
  	UNUSED(rdata);
  	UNUSED(owner);
  	UNUSED(bad);
  
  	return (ISC_TRUE);
  }
  
  static inline int
  casecompare_dnskey(ARGS_COMPARE) {
  
  	/*
  	 * Treat ALG 253 (private DNS) subtype name case sensistively.
  	 */
  	return (compare_dnskey(rdata1, rdata2));
  }
  
  #endif	/* RDATA_GENERIC_DNSKEY_48_C */
  