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phunix/external/bsd/bind/dist/bin/dnssec/dnssec-keyfromlabel.c
David van Moolenbroek 00b67f09dd Import NetBSD named(8) 
Also known as ISC bind.  This import adds utilities such as host(1),
dig(1), and nslookup(1), as well as many other tools and libraries.

Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
2017-03-21 22:00:06 +00:00

700 lines
20 KiB
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/* $NetBSD: dnssec-keyfromlabel.c,v 1.14 2015/07/08 17:28:55 christos Exp $ */
/*
* Copyright (C) 2007-2012, 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
*
* 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.
*/
/*! \file */
#include <config.h>
#include <ctype.h>
#include <stdlib.h>
#include <isc/buffer.h>
#include <isc/commandline.h>
#include <isc/entropy.h>
#include <isc/mem.h>
#include <isc/region.h>
#include <isc/print.h>
#include <isc/string.h>
#include <isc/util.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-keyfromlabel";
int verbose;
#define DEFAULT_ALGORITHM "RSASHA1"
#define DEFAULT_NSEC3_ALGORITHM "NSEC3RSASHA1"
static const char *algs = "RSA | RSAMD5 | DH | DSA | RSASHA1 |"
" NSEC3DSA | NSEC3RSASHA1 |"
" RSASHA256 | RSASHA512 | ECCGOST |"
" ECDSAP256SHA256 | ECDSAP384SHA384";
ISC_PLATFORM_NORETURN_PRE static void
usage(void) ISC_PLATFORM_NORETURN_POST;
static void
usage(void) {
fprintf(stderr, "Usage:\n");
fprintf(stderr, " %s -l label [options] name\n\n",
program);
fprintf(stderr, "Version: %s\n", VERSION);
fprintf(stderr, "Required options:\n");
fprintf(stderr, " -l label: label of the key pair\n");
fprintf(stderr, " name: owner of the key\n");
fprintf(stderr, "Other options:\n");
fprintf(stderr, " -a algorithm: %s\n", algs);
fprintf(stderr, " (default: RSASHA1, or "
"NSEC3RSASHA1 if using -3)\n");
fprintf(stderr, " -3: use NSEC3-capable algorithm\n");
fprintf(stderr, " -c class (default: IN)\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, " -K directory: directory in which to place "
"key files\n");
fprintf(stderr, " -k: generate a TYPE=KEY key\n");
fprintf(stderr, " -L ttl: default key TTL\n");
fprintf(stderr, " -n nametype: ZONE | HOST | ENTITY | USER | OTHER\n");
fprintf(stderr, " (DNSKEY generation defaults to ZONE\n");
fprintf(stderr, " -p protocol: default: 3 [dnssec]\n");
fprintf(stderr, " -t type: "
"AUTHCONF | NOAUTHCONF | NOAUTH | NOCONF "
"(default: AUTHCONF)\n");
fprintf(stderr, " -y: permit keys that might collide\n");
fprintf(stderr, " -v verbose level\n");
fprintf(stderr, " -V: print version information\n");
fprintf(stderr, "Date options:\n");
fprintf(stderr, " -P date/[+-]offset: set key publication date\n");
fprintf(stderr, " -A date/[+-]offset: set key activation date\n");
fprintf(stderr, " -R date/[+-]offset: set key revocation date\n");
fprintf(stderr, " -I date/[+-]offset: set key inactivation date\n");
fprintf(stderr, " -D date/[+-]offset: set key 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);
}
int
main(int argc, char **argv) {
char *algname = NULL, *freeit = NULL;
char *nametype = NULL, *type = NULL;
const char *directory = NULL;
const char *predecessor = NULL;
dst_key_t *prevkey = NULL;
#ifdef USE_PKCS11
const char *engine = PKCS11_ENGINE;
#else
const char *engine = NULL;
#endif
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 oldstyle = ISC_FALSE;
isc_mem_t *mctx = NULL;
int ch;
int protocol = -1, signatory = 0;
isc_result_t ret;
isc_textregion_t r;
char filename[255];
isc_buffer_t buf;
isc_log_t *log = NULL;
isc_entropy_t *ectx = NULL;
dns_rdataclass_t rdclass;
int options = DST_TYPE_PRIVATE | DST_TYPE_PUBLIC;
char *label = NULL;
dns_ttl_t ttl = 0;
isc_stdtime_t publish = 0, activate = 0, revoke = 0;
isc_stdtime_t inactive = 0, delete = 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 use_nsec3 = ISC_FALSE;
isc_boolean_t avoid_collisions = ISC_TRUE;
isc_boolean_t exact;
unsigned char c;
if (argc == 1)
usage();
RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
#ifdef PKCS11CRYPTO
pk11_result_register();
#endif
dns_result_register();
isc_commandline_errprint = ISC_FALSE;
isc_stdtime_get(&now);
#define CMDLINE_FLAGS "3A:a:Cc:D:E:Ff:GhI:i:kK:L:l:n:P:p:R:S:t:v:Vy"
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 'C':
oldstyle = ISC_TRUE;
break;
case 'c':
classname = isc_commandline_argument;
break;
case 'E':
engine = isc_commandline_argument;
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 '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':
options |= DST_TYPE_KEY;
break;
case 'L':
ttl = strtottl(isc_commandline_argument);
setttl = ISC_TRUE;
break;
case 'l':
label = isc_mem_strdup(mctx, isc_commandline_argument);
break;
case 'n':
nametype = isc_commandline_argument;
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 't':
type = isc_commandline_argument;
break;
case 'v':
verbose = strtol(isc_commandline_argument, &endp, 0);
if (*endp != '\0')
fatal("-v must be followed by a number");
break;
case 'y':
avoid_collisions = ISC_FALSE;
break;
case 'G':
genonly = ISC_TRUE;
break;
case 'P':
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");
revoke = 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':
if (setdel || unsetdel)
fatal("-D specified more than once");
delete = 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 (ectx == NULL)
setup_entropy(mctx, NULL, &ectx);
ret = dst_lib_init2(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 (label == NULL)
fatal("the key label was not specified");
if (argc < isc_commandline_index + 1)
fatal("the key name was not specified");
if (argc > isc_commandline_index + 1)
fatal("extraneous arguments");
dns_fixedname_init(&fname);
name = dns_fixedname_name(&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 (strchr(label, ':') == NULL) {
char *l;
int len;
len = strlen(label) + 8;
l = isc_mem_allocate(mctx, len);
if (l == NULL)
fatal("cannot allocate memory");
snprintf(l, len, "pkcs11:%s", label);
isc_mem_free(mctx, label);
label = l;
}
if (algname == NULL) {
if (use_nsec3)
algname = strdup(DEFAULT_NSEC3_ALGORITHM);
else
algname = strdup(DEFAULT_ALGORITHM);
if (algname == NULL)
fatal("strdup failed");
freeit = algname;
if (verbose > 0)
fprintf(stderr, "no algorithm specified; "
"defaulting to %s\n", algname);
}
if (strcasecmp(algname, "RSA") == 0) {
fprintf(stderr, "The use of RSA (RSAMD5) is not "
"recommended.\nIf you still wish to "
"use RSA (RSAMD5) please specify "
"\"-a RSAMD5\"\n");
if (freeit != NULL)
free(freeit);
return (1);
} 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;
}
if (use_nsec3 &&
alg != DST_ALG_NSEC3DSA && alg != DST_ALG_NSEC3RSASHA1 &&
alg != DST_ALG_RSASHA256 && alg != DST_ALG_RSASHA512 &&
alg != DST_ALG_ECCGOST &&
alg != DST_ALG_ECDSA256 && alg != DST_ALG_ECDSA384) {
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);
else if (strcasecmp(type, "AUTHCONF") == 0)
/* nothing */;
else
fatal("invalid type %s", type);
}
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 (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);
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;
}
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 ((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);
isc_buffer_init(&buf, filename, sizeof(filename) - 1);
/* associate the key */
ret = dst_key_fromlabel(name, alg, flags, protocol,
rdclass, "pkcs11", label, NULL, mctx, &key);
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 get key %s/%s: %s",
namestr, algstr, isc_result_totext(ret));
/* NOTREACHED */
exit(-1);
}
/*
* Set key timing metadata (unless using -C)
*
* Publish and activation dates are set to "now" by default, but
* can be overridden. Creation date is always set to "now".
*/
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)
dst_key_settime(key, DST_TIME_PUBLISH, activate);
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, revoke);
}
if (setinact)
dst_key_settime(key, DST_TIME_INACTIVE, inactive);
if (setdel)
dst_key_settime(key, DST_TIME_DELETE, delete);
} else {
if (setpub || setact || setrev || setinact ||
setdel || unsetpub || unsetact ||
unsetrev || unsetinact || unsetdel || genonly)
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 default key TTL */
if (setttl)
dst_key_setttl(key, ttl);
/*
* Do not overwrite an existing key. Warn LOUDLY if there
* is a risk of ID collision due to this key or another key
* being revoked.
*/
if (key_collision(key, name, directory, mctx, &exact)) {
isc_buffer_clear(&buf);
ret = dst_key_buildfilename(key, 0, directory, &buf);
if (ret != ISC_R_SUCCESS)
fatal("dst_key_buildfilename returned: %s\n",
isc_result_totext(ret));
if (exact)
fatal("%s: %s already exists\n", program, filename);
if (avoid_collisions)
fatal("%s: %s could collide with another key upon "
"revokation\n", program, filename);
fprintf(stderr, "%s: WARNING: Key %s could collide with "
"another key upon revokation. If you plan "
"to revoke keys, destroy this key and "
"generate a different one.\n",
program, filename);
}
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_free(mctx, label);
isc_mem_destroy(&mctx);
if (freeit != NULL)
free(freeit);
return (0);
}
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