6318052d9e
lots of new features compared to 9.4.x, including: Full NSEC3 support Automatic zone re-signing New update-policy methods tcp-self and 6to4-self DHCID support. More detailed statistics counters including those supported in BIND 8. Faster ACL processing. Efficient LRU cache-cleaning mechanism. NSID support.
328 lines
9.2 KiB
C
328 lines
9.2 KiB
C
/*
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* Copyright (C) 2007, 2008 Internet Systems Consortium, Inc. ("ISC")
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: dnssec-keyfromlabel.c,v 1.4 2008/09/24 02:46:21 marka Exp $ */
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/*! \file */
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#include <config.h>
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#include <stdlib.h>
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#include <isc/buffer.h>
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#include <isc/commandline.h>
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#include <isc/entropy.h>
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#include <isc/mem.h>
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#include <isc/region.h>
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#include <isc/string.h>
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#include <isc/util.h>
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#include <dns/fixedname.h>
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#include <dns/keyvalues.h>
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#include <dns/log.h>
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#include <dns/name.h>
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#include <dns/rdataclass.h>
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#include <dns/result.h>
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#include <dns/secalg.h>
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#include <dst/dst.h>
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#include "dnssectool.h"
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#define MAX_RSA 4096 /* should be long enough... */
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const char *program = "dnssec-keyfromlabel";
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int verbose;
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static const char *algs = "RSA | RSAMD5 | DH | DSA | RSASHA1 |"
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" NSEC3DSA | NSEC3RSASHA1";
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static void
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usage(void) {
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fprintf(stderr, "Usage:\n");
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fprintf(stderr, " %s -a alg -l label [options] name\n\n",
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program);
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fprintf(stderr, "Version: %s\n", VERSION);
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fprintf(stderr, "Required options:\n");
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fprintf(stderr, " -a algorithm: %s\n", algs);
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fprintf(stderr, " -l label: label of the key\n");
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fprintf(stderr, " name: owner of the key\n");
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fprintf(stderr, "Other options:\n");
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fprintf(stderr, " -n nametype: ZONE | HOST | ENTITY | USER | OTHER\n");
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fprintf(stderr, " (DNSKEY generation defaults to ZONE\n");
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fprintf(stderr, " -c <class> (default: IN)\n");
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fprintf(stderr, " -f keyflag: KSK\n");
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fprintf(stderr, " -t <type>: "
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"AUTHCONF | NOAUTHCONF | NOAUTH | NOCONF "
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"(default: AUTHCONF)\n");
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fprintf(stderr, " -p <protocol>: "
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"default: 3 [dnssec]\n");
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fprintf(stderr, " -v <verbose level>\n");
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fprintf(stderr, " -k : generate a TYPE=KEY key\n");
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fprintf(stderr, "Output:\n");
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fprintf(stderr, " K<name>+<alg>+<id>.key, "
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"K<name>+<alg>+<id>.private\n");
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exit (-1);
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}
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int
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main(int argc, char **argv) {
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char *algname = NULL, *nametype = NULL, *type = NULL;
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char *classname = NULL;
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char *endp;
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dst_key_t *key = NULL, *oldkey;
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dns_fixedname_t fname;
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dns_name_t *name;
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isc_uint16_t flags = 0, ksk = 0;
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dns_secalg_t alg;
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isc_boolean_t null_key = ISC_FALSE;
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isc_mem_t *mctx = NULL;
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int ch;
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int protocol = -1, signatory = 0;
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isc_result_t ret;
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isc_textregion_t r;
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char filename[255];
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isc_buffer_t buf;
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isc_log_t *log = NULL;
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isc_entropy_t *ectx = NULL;
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dns_rdataclass_t rdclass;
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int options = DST_TYPE_PRIVATE | DST_TYPE_PUBLIC;
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char *label = NULL;
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if (argc == 1)
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usage();
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RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
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dns_result_register();
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isc_commandline_errprint = ISC_FALSE;
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while ((ch = isc_commandline_parse(argc, argv,
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"a:c:f:kl:n:p:t:v:h")) != -1)
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{
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switch (ch) {
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case 'a':
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algname = isc_commandline_argument;
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break;
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case 'c':
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classname = isc_commandline_argument;
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break;
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case 'f':
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if (strcasecmp(isc_commandline_argument, "KSK") == 0)
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ksk = DNS_KEYFLAG_KSK;
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else
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fatal("unknown flag '%s'",
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isc_commandline_argument);
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break;
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case 'k':
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options |= DST_TYPE_KEY;
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break;
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case 'l':
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label = isc_commandline_argument;
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break;
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case 'n':
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nametype = isc_commandline_argument;
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break;
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case 'p':
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protocol = strtol(isc_commandline_argument, &endp, 10);
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if (*endp != '\0' || protocol < 0 || protocol > 255)
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fatal("-p must be followed by a number "
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"[0..255]");
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break;
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case 't':
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type = isc_commandline_argument;
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break;
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case 'v':
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verbose = strtol(isc_commandline_argument, &endp, 0);
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if (*endp != '\0')
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fatal("-v must be followed by a number");
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break;
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case '?':
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if (isc_commandline_option != '?')
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fprintf(stderr, "%s: invalid argument -%c\n",
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program, isc_commandline_option);
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case 'h':
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usage();
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default:
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fprintf(stderr, "%s: unhandled option -%c\n",
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program, isc_commandline_option);
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exit(1);
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}
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}
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if (ectx == NULL)
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setup_entropy(mctx, NULL, &ectx);
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ret = dst_lib_init(mctx, ectx,
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ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
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if (ret != ISC_R_SUCCESS)
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fatal("could not initialize dst");
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setup_logging(verbose, mctx, &log);
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if (label == NULL)
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fatal("the key label was not specified");
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if (argc < isc_commandline_index + 1)
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fatal("the key name was not specified");
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if (argc > isc_commandline_index + 1)
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fatal("extraneous arguments");
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if (algname == NULL)
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fatal("no algorithm was specified");
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if (strcasecmp(algname, "RSA") == 0) {
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fprintf(stderr, "The use of RSA (RSAMD5) is not recommended.\n"
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"If you still wish to use RSA (RSAMD5) please "
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"specify \"-a RSAMD5\"\n");
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return (1);
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} else {
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r.base = algname;
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r.length = strlen(algname);
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ret = dns_secalg_fromtext(&alg, &r);
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if (ret != ISC_R_SUCCESS)
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fatal("unknown algorithm %s", algname);
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if (alg == DST_ALG_DH)
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options |= DST_TYPE_KEY;
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}
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if (type != NULL && (options & DST_TYPE_KEY) != 0) {
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if (strcasecmp(type, "NOAUTH") == 0)
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flags |= DNS_KEYTYPE_NOAUTH;
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else if (strcasecmp(type, "NOCONF") == 0)
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flags |= DNS_KEYTYPE_NOCONF;
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else if (strcasecmp(type, "NOAUTHCONF") == 0) {
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flags |= (DNS_KEYTYPE_NOAUTH | DNS_KEYTYPE_NOCONF);
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}
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else if (strcasecmp(type, "AUTHCONF") == 0)
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/* nothing */;
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else
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fatal("invalid type %s", type);
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}
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if (nametype == NULL) {
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if ((options & DST_TYPE_KEY) != 0) /* KEY */
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fatal("no nametype specified");
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flags |= DNS_KEYOWNER_ZONE; /* DNSKEY */
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} else if (strcasecmp(nametype, "zone") == 0)
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flags |= DNS_KEYOWNER_ZONE;
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else if ((options & DST_TYPE_KEY) != 0) { /* KEY */
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if (strcasecmp(nametype, "host") == 0 ||
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strcasecmp(nametype, "entity") == 0)
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flags |= DNS_KEYOWNER_ENTITY;
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else if (strcasecmp(nametype, "user") == 0)
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flags |= DNS_KEYOWNER_USER;
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else
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fatal("invalid KEY nametype %s", nametype);
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} else if (strcasecmp(nametype, "other") != 0) /* DNSKEY */
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fatal("invalid DNSKEY nametype %s", nametype);
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rdclass = strtoclass(classname);
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if ((options & DST_TYPE_KEY) != 0) /* KEY */
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flags |= signatory;
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else if ((flags & DNS_KEYOWNER_ZONE) != 0) /* DNSKEY */
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flags |= ksk;
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if (protocol == -1)
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protocol = DNS_KEYPROTO_DNSSEC;
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else if ((options & DST_TYPE_KEY) == 0 &&
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protocol != DNS_KEYPROTO_DNSSEC)
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fatal("invalid DNSKEY protocol: %d", protocol);
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if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY) {
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if ((flags & DNS_KEYFLAG_SIGNATORYMASK) != 0)
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fatal("specified null key with signing authority");
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}
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if ((flags & DNS_KEYFLAG_OWNERMASK) == DNS_KEYOWNER_ZONE &&
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alg == DNS_KEYALG_DH)
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fatal("a key with algorithm '%s' cannot be a zone key",
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algname);
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dns_fixedname_init(&fname);
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name = dns_fixedname_name(&fname);
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isc_buffer_init(&buf, argv[isc_commandline_index],
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strlen(argv[isc_commandline_index]));
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isc_buffer_add(&buf, strlen(argv[isc_commandline_index]));
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ret = dns_name_fromtext(name, &buf, dns_rootname, ISC_FALSE, NULL);
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if (ret != ISC_R_SUCCESS)
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fatal("invalid key name %s: %s", argv[isc_commandline_index],
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isc_result_totext(ret));
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if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY)
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null_key = ISC_TRUE;
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isc_buffer_init(&buf, filename, sizeof(filename) - 1);
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/* associate the key */
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ret = dst_key_fromlabel(name, alg, flags, protocol,
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rdclass, "", label, NULL, mctx, &key);
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isc_entropy_stopcallbacksources(ectx);
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if (ret != ISC_R_SUCCESS) {
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char namestr[DNS_NAME_FORMATSIZE];
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char algstr[ALG_FORMATSIZE];
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dns_name_format(name, namestr, sizeof(namestr));
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alg_format(alg, algstr, sizeof(algstr));
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fatal("failed to generate key %s/%s: %s\n",
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namestr, algstr, isc_result_totext(ret));
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exit(-1);
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}
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/*
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* Try to read a key with the same name, alg and id from disk.
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* If there is one we must continue generating a new one
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* unless we were asked to generate a null key, in which
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* case we return failure.
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*/
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ret = dst_key_fromfile(name, dst_key_id(key), alg,
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DST_TYPE_PRIVATE, NULL, mctx, &oldkey);
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/* do not overwrite an existing key */
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if (ret == ISC_R_SUCCESS) {
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isc_buffer_clear(&buf);
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ret = dst_key_buildfilename(key, 0, NULL, &buf);
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fprintf(stderr, "%s: %s already exists\n",
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program, filename);
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dst_key_free(&key);
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exit (1);
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}
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ret = dst_key_tofile(key, options, NULL);
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if (ret != ISC_R_SUCCESS) {
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char keystr[KEY_FORMATSIZE];
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key_format(key, keystr, sizeof(keystr));
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fatal("failed to write key %s: %s\n", keystr,
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isc_result_totext(ret));
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}
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isc_buffer_clear(&buf);
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ret = dst_key_buildfilename(key, 0, NULL, &buf);
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printf("%s\n", filename);
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dst_key_free(&key);
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cleanup_logging(&log);
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cleanup_entropy(&ectx);
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dst_lib_destroy();
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dns_name_destroy();
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if (verbose > 10)
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isc_mem_stats(mctx, stdout);
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isc_mem_destroy(&mctx);
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return (0);
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}
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