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bind/bin/dnssec/dnssec-keygen.c
Michał Kępień 4df4a8e731 Use dns_fixedname_initname() where possible 
Replace dns_fixedname_init() calls followed by dns_fixedname_name()
calls with calls to dns_fixedname_initname() where it is possible
without affecting current behavior and/or performance.

This patch was mostly prepared using Coccinelle and the following
semantic patch:

    @@
    expression fixedname, name;
    @@
    -	dns_fixedname_init(&fixedname);
    	...
    -	name = dns_fixedname_name(&fixedname);
    +	name = dns_fixedname_initname(&fixedname);

The resulting set of changes was then manually reviewed to exclude false
positives and apply minor tweaks.

It is likely that more occurrences of this pattern can be refactored in
an identical way.  This commit only takes care of the low-hanging fruit.
2018-04-09 12:14:16 +02:00

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/*
* Portions Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* 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 http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*
* Portions Copyright (C) Network Associates, Inc.
*
* 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 AND NETWORK ASSOCIATES 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.
*/
/*! \file */
#include <config.h>
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include <isc/buffer.h>
#include <isc/commandline.h>
#include <isc/entropy.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/region.h>
#include <isc/string.h>
#include <isc/util.h>
#include <pk11/site.h>
#include <dns/dnssec.h>
#include <dns/fixedname.h>
#include <dns/keyvalues.h>
#include <dns/log.h>
#include <dns/name.h>
#include <dns/rdataclass.h>
#include <dns/result.h>
#include <dns/secalg.h>
#include <dst/dst.h>
#ifdef PKCS11CRYPTO
#include <pk11/result.h>
#endif
#include "dnssectool.h"
#define MAX_RSA 4096 /* should be long enough... */
const char *program = "dnssec-keygen";
int verbose;
ISC_PLATFORM_NORETURN_PRE static void
usage(void) ISC_PLATFORM_NORETURN_POST;
static void progress(int p);
static void
usage(void) {
fprintf(stderr, "Usage:\n");
fprintf(stderr, " %s [options] name\n\n", program);
fprintf(stderr, "Version: %s\n", VERSION);
fprintf(stderr, " name: owner of the key\n");
fprintf(stderr, "Options:\n");
fprintf(stderr, " -K <directory>: write keys into directory\n");
fprintf(stderr, " -a <algorithm>:\n");
fprintf(stderr, " RSA | RSAMD5 | DSA | RSASHA1 | NSEC3RSASHA1"
" | NSEC3DSA |\n");
fprintf(stderr, " RSASHA256 | RSASHA512 | ECCGOST |\n");
fprintf(stderr, " ECDSAP256SHA256 | ECDSAP384SHA384 |\n");
fprintf(stderr, " ED25519 | ED448 | DH\n");
fprintf(stderr, " -3: use NSEC3-capable algorithm\n");
fprintf(stderr, " -b <key size in bits>:\n");
fprintf(stderr, " RSAMD5:\t[1024..%d]\n", MAX_RSA);
fprintf(stderr, " RSASHA1:\t[1024..%d]\n", MAX_RSA);
fprintf(stderr, " NSEC3RSASHA1:\t[1024..%d]\n", MAX_RSA);
fprintf(stderr, " RSASHA256:\t[1024..%d]\n", MAX_RSA);
fprintf(stderr, " RSASHA512:\t[1024..%d]\n", MAX_RSA);
fprintf(stderr, " DH:\t\t[128..4096]\n");
fprintf(stderr, " DSA:\t\t[512..1024] and divisible by 64\n");
fprintf(stderr, " NSEC3DSA:\t[512..1024] and divisible "
"by 64\n");
fprintf(stderr, " ECCGOST:\tignored\n");
fprintf(stderr, " ECDSAP256SHA256:\tignored\n");
fprintf(stderr, " ECDSAP384SHA384:\tignored\n");
fprintf(stderr, " ED25519:\tignored\n");
fprintf(stderr, " ED448:\tignored\n");
fprintf(stderr, " (key size defaults are set according to\n"
" algorithm and usage (ZSK or KSK)\n");
fprintf(stderr, " -n <nametype>: ZONE | HOST | ENTITY | "
"USER | OTHER\n");
fprintf(stderr, " (DNSKEY generation defaults to ZONE)\n");
fprintf(stderr, " -c <class>: (default: IN)\n");
fprintf(stderr, " -d <digest bits> (0 => max, default)\n");
fprintf(stderr, " -E <engine>:\n");
#if defined(PKCS11CRYPTO)
fprintf(stderr, " path to PKCS#11 provider library "
"(default is %s)\n", PK11_LIB_LOCATION);
#elif defined(USE_PKCS11)
fprintf(stderr, " name of an OpenSSL engine to use "
"(default is \"pkcs11\")\n");
#else
fprintf(stderr, " name of an OpenSSL engine to use\n");
#endif
fprintf(stderr, " -f <keyflag>: KSK | REVOKE\n");
fprintf(stderr, " -g <generator>: use specified generator "
"(DH only)\n");
fprintf(stderr, " -L <ttl>: default key TTL\n");
fprintf(stderr, " -p <protocol>: (default: 3 [dnssec])\n");
fprintf(stderr, " -r <randomdev>: a file containing random data\n");
fprintf(stderr, " -s <strength>: strength value this key signs DNS "
"records with (default: 0)\n");
fprintf(stderr, " -T <rrtype>: DNSKEY | KEY (default: DNSKEY; "
"use KEY for SIG(0))\n");
fprintf(stderr, " -t <type>: "
"AUTHCONF | NOAUTHCONF | NOAUTH | NOCONF "
"(default: AUTHCONF)\n");
fprintf(stderr, " -h: print usage and exit\n");
fprintf(stderr, " -m <memory debugging mode>:\n");
fprintf(stderr, " usage | trace | record | size | mctx\n");
fprintf(stderr, " -v <level>: set verbosity level (0 - 10)\n");
fprintf(stderr, " -V: print version information\n");
fprintf(stderr, "Timing options:\n");
fprintf(stderr, " -P date/[+-]offset/none: set key publication date "
"(default: now)\n");
fprintf(stderr, " -P sync date/[+-]offset/none: set CDS and CDNSKEY "
"publication date\n");
fprintf(stderr, " -A date/[+-]offset/none: set key activation date "
"(default: now)\n");
fprintf(stderr, " -R date/[+-]offset/none: set key "
"revocation date\n");
fprintf(stderr, " -I date/[+-]offset/none: set key "
"inactivation date\n");
fprintf(stderr, " -D date/[+-]offset/none: set key deletion date\n");
fprintf(stderr, " -D sync date/[+-]offset/none: set CDS and CDNSKEY "
"deletion date\n");
fprintf(stderr, " -G: generate key only; do not set -P or -A\n");
fprintf(stderr, " -C: generate a backward-compatible key, omitting "
"all dates\n");
fprintf(stderr, " -S <key>: generate a successor to an existing "
"key\n");
fprintf(stderr, " -i <interval>: prepublication interval for "
"successor key "
"(default: 30 days)\n");
fprintf(stderr, "Output:\n");
fprintf(stderr, " K<name>+<alg>+<id>.key, "
"K<name>+<alg>+<id>.private\n");
exit (-1);
}
static isc_boolean_t
dsa_size_ok(int size) {
return (ISC_TF(size >= 512 && size <= 1024 && size % 64 == 0));
}
static void
progress(int p)
{
char c = '*';
switch (p) {
case 0:
c = '.';
break;
case 1:
c = '+';
break;
case 2:
c = '*';
break;
case 3:
c = ' ';
break;
default:
break;
}
(void) putc(c, stderr);
(void) fflush(stderr);
}
int
main(int argc, char **argv) {
char *algname = NULL, *freeit = NULL;
char *nametype = NULL, *type = NULL;
char *classname = NULL;
char *endp;
dst_key_t *key = NULL;
dns_fixedname_t fname;
dns_name_t *name;
isc_uint16_t flags = 0, kskflag = 0, revflag = 0;
dns_secalg_t alg;
isc_boolean_t conflict = ISC_FALSE, null_key = ISC_FALSE;
isc_boolean_t oldstyle = ISC_FALSE;
isc_mem_t *mctx = NULL;
int ch, generator = 0, param = 0;
int protocol = -1, size = -1, signatory = 0;
isc_result_t ret;
isc_textregion_t r;
char filename[255];
const char *directory = NULL;
const char *predecessor = NULL;
dst_key_t *prevkey = NULL;
isc_buffer_t buf;
isc_log_t *log = NULL;
isc_entropy_t *ectx = NULL;
#ifdef USE_PKCS11
const char *engine = PKCS11_ENGINE;
#else
const char *engine = NULL;
#endif
dns_rdataclass_t rdclass;
int options = DST_TYPE_PRIVATE | DST_TYPE_PUBLIC;
int dbits = 0;
dns_ttl_t ttl = 0;
isc_boolean_t use_nsec3 = ISC_FALSE;
isc_stdtime_t publish = 0, activate = 0, revokekey = 0;
isc_stdtime_t inactive = 0, deltime = 0;
isc_stdtime_t now;
int prepub = -1;
isc_boolean_t setpub = ISC_FALSE, setact = ISC_FALSE;
isc_boolean_t setrev = ISC_FALSE, setinact = ISC_FALSE;
isc_boolean_t setdel = ISC_FALSE, setttl = ISC_FALSE;
isc_boolean_t unsetpub = ISC_FALSE, unsetact = ISC_FALSE;
isc_boolean_t unsetrev = ISC_FALSE, unsetinact = ISC_FALSE;
isc_boolean_t unsetdel = ISC_FALSE;
isc_boolean_t genonly = ISC_FALSE;
isc_boolean_t quiet = ISC_FALSE;
isc_boolean_t show_progress = ISC_FALSE;
unsigned char c;
isc_stdtime_t syncadd = 0, syncdel = 0;
isc_boolean_t setsyncadd = ISC_FALSE;
isc_boolean_t setsyncdel = ISC_FALSE;
if (argc == 1)
usage();
#ifdef PKCS11CRYPTO
pk11_result_register();
#endif
dns_result_register();
isc_commandline_errprint = ISC_FALSE;
/*
* Process memory debugging argument first.
*/
#define CMDLINE_FLAGS "3A:a:b:Cc:D:d:E:eFf:Gg:hI:i:K:kL:m:n:P:p:qR:r:S:s:T:t:" \
"v:V"
while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) {
switch (ch) {
case 'm':
if (strcasecmp(isc_commandline_argument, "record") == 0)
isc_mem_debugging |= ISC_MEM_DEBUGRECORD;
if (strcasecmp(isc_commandline_argument, "trace") == 0)
isc_mem_debugging |= ISC_MEM_DEBUGTRACE;
if (strcasecmp(isc_commandline_argument, "usage") == 0)
isc_mem_debugging |= ISC_MEM_DEBUGUSAGE;
if (strcasecmp(isc_commandline_argument, "size") == 0)
isc_mem_debugging |= ISC_MEM_DEBUGSIZE;
if (strcasecmp(isc_commandline_argument, "mctx") == 0)
isc_mem_debugging |= ISC_MEM_DEBUGCTX;
break;
default:
break;
}
}
isc_commandline_reset = ISC_TRUE;
RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
isc_stdtime_get(&now);
while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) {
switch (ch) {
case '3':
use_nsec3 = ISC_TRUE;
break;
case 'a':
algname = isc_commandline_argument;
break;
case 'b':
size = strtol(isc_commandline_argument, &endp, 10);
if (*endp != '\0' || size < 0)
fatal("-b requires a non-negative number");
break;
case 'C':
oldstyle = ISC_TRUE;
break;
case 'c':
classname = isc_commandline_argument;
break;
case 'd':
dbits = strtol(isc_commandline_argument, &endp, 10);
if (*endp != '\0' || dbits < 0)
fatal("-d requires a non-negative number");
break;
case 'E':
engine = isc_commandline_argument;
break;
case 'e':
fprintf(stderr,
"phased-out option -e "
"(was 'use (RSA) large exponent)\n");
break;
case 'f':
c = (unsigned char)(isc_commandline_argument[0]);
if (toupper(c) == 'K')
kskflag = DNS_KEYFLAG_KSK;
else if (toupper(c) == 'R')
revflag = DNS_KEYFLAG_REVOKE;
else
fatal("unknown flag '%s'",
isc_commandline_argument);
break;
case 'g':
generator = strtol(isc_commandline_argument,
&endp, 10);
if (*endp != '\0' || generator <= 0)
fatal("-g requires a positive number");
break;
case 'K':
directory = isc_commandline_argument;
ret = try_dir(directory);
if (ret != ISC_R_SUCCESS)
fatal("cannot open directory %s: %s",
directory, isc_result_totext(ret));
break;
case 'k':
fatal("The -k option has been deprecated.\n"
"To generate a key-signing key, use -f KSK.\n"
"To generate a key with TYPE=KEY, use -T KEY.\n");
break;
case 'L':
ttl = strtottl(isc_commandline_argument);
setttl = ISC_TRUE;
break;
case 'n':
nametype = isc_commandline_argument;
break;
case 'm':
break;
case 'p':
protocol = strtol(isc_commandline_argument, &endp, 10);
if (*endp != '\0' || protocol < 0 || protocol > 255)
fatal("-p must be followed by a number "
"[0..255]");
break;
case 'q':
quiet = ISC_TRUE;
break;
case 'r':
setup_entropy(mctx, isc_commandline_argument, &ectx);
break;
case 's':
signatory = strtol(isc_commandline_argument,
&endp, 10);
if (*endp != '\0' || signatory < 0 || signatory > 15)
fatal("-s must be followed by a number "
"[0..15]");
break;
case 'T':
if (strcasecmp(isc_commandline_argument, "KEY") == 0)
options |= DST_TYPE_KEY;
else if (strcasecmp(isc_commandline_argument,
"DNSKEY") == 0)
/* default behavior */
;
else
fatal("unknown type '%s'",
isc_commandline_argument);
break;
case 't':
type = isc_commandline_argument;
break;
case 'v':
endp = NULL;
verbose = strtol(isc_commandline_argument, &endp, 0);
if (*endp != '\0')
fatal("-v must be followed by a number");
break;
case 'z':
/* already the default */
break;
case 'G':
genonly = ISC_TRUE;
break;
case 'P':
/* -Psync ? */
if (isoptarg("sync", argv, usage)) {
if (setsyncadd)
fatal("-P sync specified more than "
"once");
syncadd = strtotime(isc_commandline_argument,
now, now, &setsyncadd);
break;
}
(void)isoptarg("dnskey", argv, usage);
if (setpub || unsetpub)
fatal("-P specified more than once");
publish = strtotime(isc_commandline_argument,
now, now, &setpub);
unsetpub = !setpub;
break;
case 'A':
if (setact || unsetact)
fatal("-A specified more than once");
activate = strtotime(isc_commandline_argument,
now, now, &setact);
unsetact = !setact;
break;
case 'R':
if (setrev || unsetrev)
fatal("-R specified more than once");
revokekey = strtotime(isc_commandline_argument,
now, now, &setrev);
unsetrev = !setrev;
break;
case 'I':
if (setinact || unsetinact)
fatal("-I specified more than once");
inactive = strtotime(isc_commandline_argument,
now, now, &setinact);
unsetinact = !setinact;
break;
case 'D':
/* -Dsync ? */
if (isoptarg("sync", argv, usage)) {
if (setsyncdel)
fatal("-D sync specified more than "
"once");
syncdel = strtotime(isc_commandline_argument,
now, now, &setsyncdel);
break;
}
(void)isoptarg("dnskey", argv, usage);
if (setdel || unsetdel)
fatal("-D specified more than once");
deltime = strtotime(isc_commandline_argument,
now, now, &setdel);
unsetdel = !setdel;
break;
case 'S':
predecessor = isc_commandline_argument;
break;
case 'i':
prepub = strtottl(isc_commandline_argument);
break;
case 'F':
/* Reserved for FIPS mode */
/* FALLTHROUGH */
case '?':
if (isc_commandline_option != '?')
fprintf(stderr, "%s: invalid argument -%c\n",
program, isc_commandline_option);
/* FALLTHROUGH */
case 'h':
/* Does not return. */
usage();
case 'V':
/* Does not return. */
version(program);
default:
fprintf(stderr, "%s: unhandled option -%c\n",
program, isc_commandline_option);
exit(1);
}
}
if (!isatty(0))
quiet = ISC_TRUE;
if (ectx == NULL)
setup_entropy(mctx, NULL, &ectx);
ret = dst_lib_init(mctx, ectx, engine,
ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
if (ret != ISC_R_SUCCESS)
fatal("could not initialize dst: %s",
isc_result_totext(ret));
setup_logging(mctx, &log);
if (predecessor == NULL) {
if (prepub == -1)
prepub = 0;
if (argc < isc_commandline_index + 1)
fatal("the key name was not specified");
if (argc > isc_commandline_index + 1)
fatal("extraneous arguments");
name = dns_fixedname_initname(&fname);
isc_buffer_init(&buf, argv[isc_commandline_index],
strlen(argv[isc_commandline_index]));
isc_buffer_add(&buf, strlen(argv[isc_commandline_index]));
ret = dns_name_fromtext(name, &buf, dns_rootname, 0, NULL);
if (ret != ISC_R_SUCCESS)
fatal("invalid key name %s: %s",
argv[isc_commandline_index],
isc_result_totext(ret));
if (algname == NULL) {
fatal("no algorithm specified");
}
if (strcasecmp(algname, "RSA") == 0) {
#ifndef PK11_MD5_DISABLE
fprintf(stderr, "The use of RSA (RSAMD5) is not "
"recommended.\nIf you still wish to "
"use RSA (RSAMD5) please specify "
"\"-a RSAMD5\"\n");
INSIST(freeit == NULL);
return (1);
#else
fprintf(stderr,
"The use of RSA (RSAMD5) was disabled\n");
INSIST(freeit == NULL);
return (1);
} else if (strcasecmp(algname, "RSAMD5") == 0) {
fprintf(stderr, "The use of RSAMD5 was disabled\n");
INSIST(freeit == NULL);
return (1);
#endif
} else {
r.base = algname;
r.length = strlen(algname);
ret = dns_secalg_fromtext(&alg, &r);
if (ret != ISC_R_SUCCESS) {
fatal("unknown algorithm %s", algname);
}
if (alg == DST_ALG_DH) {
options |= DST_TYPE_KEY;
}
}
#ifdef PK11_MD5_DISABLE
INSIST((alg != DNS_KEYALG_RSAMD5));
#endif
if (!dst_algorithm_supported(alg)) {
fatal("unsupported algorithm: %d", alg);
}
if (use_nsec3) {
switch (alg) {
case DST_ALG_DSA:
alg = DST_ALG_NSEC3DSA;
break;
case DST_ALG_RSASHA1:
alg = DST_ALG_NSEC3RSASHA1;
break;
case DST_ALG_NSEC3DSA:
case DST_ALG_NSEC3RSASHA1:
case DST_ALG_RSASHA256:
case DST_ALG_RSASHA512:
case DST_ALG_ECCGOST:
case DST_ALG_ECDSA256:
case DST_ALG_ECDSA384:
case DST_ALG_ED25519:
case DST_ALG_ED448:
break;
default:
fatal("%s is incompatible with NSEC3; "
"do not use the -3 option", algname);
}
}
if (type != NULL && (options & DST_TYPE_KEY) != 0) {
if (strcasecmp(type, "NOAUTH") == 0) {
flags |= DNS_KEYTYPE_NOAUTH;
} else if (strcasecmp(type, "NOCONF") == 0) {
flags |= DNS_KEYTYPE_NOCONF;
} else if (strcasecmp(type, "NOAUTHCONF") == 0) {
flags |= (DNS_KEYTYPE_NOAUTH |
DNS_KEYTYPE_NOCONF);
if (size < 0)
size = 0;
} else if (strcasecmp(type, "AUTHCONF") == 0) {
/* nothing */;
} else {
fatal("invalid type %s", type);
}
}
if (size < 0) {
switch (alg) {
case DST_ALG_RSASHA1:
case DST_ALG_NSEC3RSASHA1:
case DST_ALG_RSASHA256:
case DST_ALG_RSASHA512:
if ((kskflag & DNS_KEYFLAG_KSK) != 0) {
size = 2048;
} else {
size = 1024;
}
if (verbose > 0) {
fprintf(stderr, "key size not "
"specified; defaulting"
" to %d\n", size);
}
break;
case DST_ALG_ECCGOST:
case DST_ALG_ECDSA256:
case DST_ALG_ECDSA384:
case DST_ALG_ED25519:
case DST_ALG_ED448:
break;
default:
fatal("key size not specified (-b option)");
}
}
if (!oldstyle && prepub > 0) {
if (setpub && setact && (activate - prepub) < publish)
fatal("Activation and publication dates "
"are closer together than the\n\t"
"prepublication interval.");
if (!setpub && !setact) {
setpub = setact = ISC_TRUE;
publish = now;
activate = now + prepub;
} else if (setpub && !setact) {
setact = ISC_TRUE;
activate = publish + prepub;
} else if (setact && !setpub) {
setpub = ISC_TRUE;
publish = activate - prepub;
}
if ((activate - prepub) < now)
fatal("Time until activation is shorter "
"than the\n\tprepublication interval.");
}
} else {
char keystr[DST_KEY_FORMATSIZE];
isc_stdtime_t when;
int major, minor;
if (prepub == -1)
prepub = (30 * 86400);
if (algname != NULL)
fatal("-S and -a cannot be used together");
if (size >= 0)
fatal("-S and -b cannot be used together");
if (nametype != NULL)
fatal("-S and -n cannot be used together");
if (type != NULL)
fatal("-S and -t cannot be used together");
if (setpub || unsetpub)
fatal("-S and -P cannot be used together");
if (setact || unsetact)
fatal("-S and -A cannot be used together");
if (use_nsec3)
fatal("-S and -3 cannot be used together");
if (oldstyle)
fatal("-S and -C cannot be used together");
if (genonly)
fatal("-S and -G cannot be used together");
ret = dst_key_fromnamedfile(predecessor, directory,
DST_TYPE_PUBLIC | DST_TYPE_PRIVATE,
mctx, &prevkey);
if (ret != ISC_R_SUCCESS)
fatal("Invalid keyfile %s: %s",
predecessor, isc_result_totext(ret));
if (!dst_key_isprivate(prevkey))
fatal("%s is not a private key", predecessor);
name = dst_key_name(prevkey);
alg = dst_key_alg(prevkey);
size = dst_key_size(prevkey);
flags = dst_key_flags(prevkey);
dst_key_format(prevkey, keystr, sizeof(keystr));
dst_key_getprivateformat(prevkey, &major, &minor);
if (major != DST_MAJOR_VERSION || minor < DST_MINOR_VERSION)
fatal("Key %s has incompatible format version %d.%d\n\t"
"It is not possible to generate a successor key.",
keystr, major, minor);
ret = dst_key_gettime(prevkey, DST_TIME_ACTIVATE, &when);
if (ret != ISC_R_SUCCESS)
fatal("Key %s has no activation date.\n\t"
"You must use dnssec-settime -A to set one "
"before generating a successor.", keystr);
ret = dst_key_gettime(prevkey, DST_TIME_INACTIVE, &activate);
if (ret != ISC_R_SUCCESS)
fatal("Key %s has no inactivation date.\n\t"
"You must use dnssec-settime -I to set one "
"before generating a successor.", keystr);
publish = activate - prepub;
if (publish < now)
fatal("Key %s becomes inactive\n\t"
"sooner than the prepublication period "
"for the new key ends.\n\t"
"Either change the inactivation date with "
"dnssec-settime -I,\n\t"
"or use the -i option to set a shorter "
"prepublication interval.", keystr);
ret = dst_key_gettime(prevkey, DST_TIME_DELETE, &when);
if (ret != ISC_R_SUCCESS)
fprintf(stderr, "%s: WARNING: Key %s has no removal "
"date;\n\t it will remain in the zone "
"indefinitely after rollover.\n\t "
"You can use dnssec-settime -D to "
"change this.\n", program, keystr);
setpub = setact = ISC_TRUE;
}
switch (alg) {
case DNS_KEYALG_RSAMD5:
case DNS_KEYALG_RSASHA1:
case DNS_KEYALG_NSEC3RSASHA1:
case DNS_KEYALG_RSASHA256:
if (size != 0 && (size < 1024 || size > MAX_RSA))
fatal("RSA key size %d out of range", size);
break;
case DNS_KEYALG_RSASHA512:
if (size != 0 && (size < 1024 || size > MAX_RSA))
fatal("RSA key size %d out of range", size);
break;
case DNS_KEYALG_DH:
if (size != 0 && (size < 128 || size > 4096))
fatal("DH key size %d out of range", size);
break;
case DNS_KEYALG_DSA:
case DNS_KEYALG_NSEC3DSA:
if (size != 0 && !dsa_size_ok(size))
fatal("invalid DSS key size: %d", size);
break;
case DST_ALG_ECCGOST:
size = 256;
break;
case DST_ALG_ECDSA256:
size = 256;
break;
case DST_ALG_ECDSA384:
size = 384;
break;
case DST_ALG_ED25519:
size = 256;
break;
case DST_ALG_ED448:
size = 456;
break;
}
if (alg != DNS_KEYALG_DH && generator != 0)
fatal("specified DH generator for a non-DH key");
if (nametype == NULL) {
if ((options & DST_TYPE_KEY) != 0) /* KEY */
fatal("no nametype specified");
flags |= DNS_KEYOWNER_ZONE; /* DNSKEY */
} else if (strcasecmp(nametype, "zone") == 0)
flags |= DNS_KEYOWNER_ZONE;
else if ((options & DST_TYPE_KEY) != 0) { /* KEY */
if (strcasecmp(nametype, "host") == 0 ||
strcasecmp(nametype, "entity") == 0)
flags |= DNS_KEYOWNER_ENTITY;
else if (strcasecmp(nametype, "user") == 0)
flags |= DNS_KEYOWNER_USER;
else
fatal("invalid KEY nametype %s", nametype);
} else if (strcasecmp(nametype, "other") != 0) /* DNSKEY */
fatal("invalid DNSKEY nametype %s", nametype);
rdclass = strtoclass(classname);
if (directory == NULL)
directory = ".";
if ((options & DST_TYPE_KEY) != 0) /* KEY */
flags |= signatory;
else if ((flags & DNS_KEYOWNER_ZONE) != 0) { /* DNSKEY */
flags |= kskflag;
flags |= revflag;
}
if (protocol == -1)
protocol = DNS_KEYPROTO_DNSSEC;
else if ((options & DST_TYPE_KEY) == 0 &&
protocol != DNS_KEYPROTO_DNSSEC)
fatal("invalid DNSKEY protocol: %d", protocol);
if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY) {
if (size > 0)
fatal("specified null key with non-zero size");
if ((flags & DNS_KEYFLAG_SIGNATORYMASK) != 0)
fatal("specified null key with signing authority");
}
if ((flags & DNS_KEYFLAG_OWNERMASK) == DNS_KEYOWNER_ZONE &&
alg == DNS_KEYALG_DH)
{
fatal("a key with algorithm '%s' cannot be a zone key",
algname);
}
switch(alg) {
case DNS_KEYALG_RSAMD5:
case DNS_KEYALG_RSASHA1:
case DNS_KEYALG_NSEC3RSASHA1:
case DNS_KEYALG_RSASHA256:
case DNS_KEYALG_RSASHA512:
show_progress = ISC_TRUE;
break;
case DNS_KEYALG_DH:
param = generator;
break;
case DNS_KEYALG_DSA:
case DNS_KEYALG_NSEC3DSA:
case DST_ALG_ECCGOST:
case DST_ALG_ECDSA256:
case DST_ALG_ECDSA384:
case DST_ALG_ED25519:
case DST_ALG_ED448:
show_progress = ISC_TRUE;
break;
}
if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY)
null_key = ISC_TRUE;
isc_buffer_init(&buf, filename, sizeof(filename) - 1);
do {
conflict = ISC_FALSE;
if (!quiet && show_progress) {
fprintf(stderr, "Generating key pair.");
ret = dst_key_generate(name, alg, size, param, flags,
protocol, rdclass, mctx, &key,
&progress);
putc('\n', stderr);
fflush(stderr);
} else {
ret = dst_key_generate(name, alg, size, param, flags,
protocol, rdclass, mctx, &key,
NULL);
}
isc_entropy_stopcallbacksources(ectx);
if (ret != ISC_R_SUCCESS) {
char namestr[DNS_NAME_FORMATSIZE];
char algstr[DNS_SECALG_FORMATSIZE];
dns_name_format(name, namestr, sizeof(namestr));
dns_secalg_format(alg, algstr, sizeof(algstr));
fatal("failed to generate key %s/%s: %s\n",
namestr, algstr, isc_result_totext(ret));
/* NOTREACHED */
exit(-1);
}
dst_key_setbits(key, dbits);
/*
* Set key timing metadata (unless using -C)
*
* Creation date is always set to "now".
*
* For a new key without an explicit predecessor, publish
* and activation dates are set to "now" by default, but
* can both be overridden.
*
* For a successor key, activation is set to match the
* predecessor's inactivation date. Publish is set to 30
* days earlier than that (XXX: this should be configurable).
* If either of the resulting dates are in the past, that's
* an error; the inactivation date of the predecessor key
* must be updated before a successor key can be created.
*/
if (!oldstyle) {
dst_key_settime(key, DST_TIME_CREATED, now);
if (genonly && (setpub || setact))
fatal("cannot use -G together with "
"-P or -A options");
if (setpub)
dst_key_settime(key, DST_TIME_PUBLISH, publish);
else if (setact && !unsetpub)
dst_key_settime(key, DST_TIME_PUBLISH,
activate - prepub);
else if (!genonly && !unsetpub)
dst_key_settime(key, DST_TIME_PUBLISH, now);
if (setact)
dst_key_settime(key, DST_TIME_ACTIVATE,
activate);
else if (!genonly && !unsetact)
dst_key_settime(key, DST_TIME_ACTIVATE, now);
if (setrev) {
if (kskflag == 0)
fprintf(stderr, "%s: warning: Key is "
"not flagged as a KSK, but -R "
"was used. Revoking a ZSK is "
"legal, but undefined.\n",
program);
dst_key_settime(key, DST_TIME_REVOKE, revokekey);
}
if (setinact)
dst_key_settime(key, DST_TIME_INACTIVE,
inactive);
if (setdel) {
if (setinact && deltime < inactive)
fprintf(stderr, "%s: warning: Key is "
"scheduled to be deleted "
"before it is scheduled to be "
"made inactive.\n",
program);
dst_key_settime(key, DST_TIME_DELETE, deltime);
}
if (setsyncadd)
dst_key_settime(key, DST_TIME_SYNCPUBLISH,
syncadd);
if (setsyncdel)
dst_key_settime(key, DST_TIME_SYNCDELETE,
syncdel);
} else {
if (setpub || setact || setrev || setinact ||
setdel || unsetpub || unsetact ||
unsetrev || unsetinact || unsetdel || genonly ||
setsyncadd || setsyncdel)
fatal("cannot use -C together with "
"-P, -A, -R, -I, -D, or -G options");
/*
* Compatibility mode: Private-key-format
* should be set to 1.2.
*/
dst_key_setprivateformat(key, 1, 2);
}
/* Set the default key TTL */
if (setttl)
dst_key_setttl(key, ttl);
/*
* Do not overwrite an existing key, or create a key
* if there is a risk of ID collision due to this key
* or another key being revoked.
*/
if (key_collision(key, name, directory, mctx, NULL)) {
conflict = ISC_TRUE;
if (null_key) {
dst_key_free(&key);
break;
}
if (verbose > 0) {
isc_buffer_clear(&buf);
ret = dst_key_buildfilename(key, 0,
directory, &buf);
if (ret == ISC_R_SUCCESS)
fprintf(stderr,
"%s: %s already exists, or "
"might collide with another "
"key upon revokation. "
"Generating a new key\n",
program, filename);
}
dst_key_free(&key);
}
} while (conflict == ISC_TRUE);
if (conflict)
fatal("cannot generate a null key due to possible key ID "
"collision");
ret = dst_key_tofile(key, options, directory);
if (ret != ISC_R_SUCCESS) {
char keystr[DST_KEY_FORMATSIZE];
dst_key_format(key, keystr, sizeof(keystr));
fatal("failed to write key %s: %s\n", keystr,
isc_result_totext(ret));
}
isc_buffer_clear(&buf);
ret = dst_key_buildfilename(key, 0, NULL, &buf);
if (ret != ISC_R_SUCCESS)
fatal("dst_key_buildfilename returned: %s\n",
isc_result_totext(ret));
printf("%s\n", filename);
dst_key_free(&key);
if (prevkey != NULL)
dst_key_free(&prevkey);
cleanup_logging(&log);
cleanup_entropy(&ectx);
dst_lib_destroy();
dns_name_destroy();
if (verbose > 10)
isc_mem_stats(mctx, stdout);
isc_mem_destroy(&mctx);
if (freeit != NULL)
free(freeit);
return (0);
}
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