diff options
Diffstat (limited to 'contrib/bind9/bin/dnssec/dnssec-keyfromlabel.c')
| -rw-r--r-- | contrib/bind9/bin/dnssec/dnssec-keyfromlabel.c | 587 |
1 files changed, 587 insertions, 0 deletions
diff --git a/contrib/bind9/bin/dnssec/dnssec-keyfromlabel.c b/contrib/bind9/bin/dnssec/dnssec-keyfromlabel.c new file mode 100644 index 0000000..3ad00d7 --- /dev/null +++ b/contrib/bind9/bin/dnssec/dnssec-keyfromlabel.c @@ -0,0 +1,587 @@ +/* + * Copyright (C) 2007-2012 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. + */ + +/* $Id: dnssec-keyfromlabel.c,v 1.38 2011/11/30 00:48:51 marka Exp $ */ + +/*! \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> + +#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"); +#ifdef USE_PKCS11 + fprintf(stderr, " -E enginename (default: pkcs11)\n"); +#else + fprintf(stderr, " -E enginename\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, "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, "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; +#ifdef USE_PKCS11 + const char *engine = "pkcs11"; +#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; + 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); + + dns_result_register(); + + isc_commandline_errprint = ISC_FALSE; + + isc_stdtime_get(&now); + + while ((ch = isc_commandline_parse(argc, argv, + "3a:Cc:E:f:K:kl:L:n:p:t:v:yFhGP:A:R:I:D:")) != -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': + if (strcmp(isc_commandline_argument, "none") == 0) + ttl = 0; + else + 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"); + + if (strcasecmp(isc_commandline_argument, "none")) { + setpub = ISC_TRUE; + publish = strtotime(isc_commandline_argument, + now, now); + } else { + unsetpub = ISC_TRUE; + } + break; + case 'A': + if (setact || unsetact) + fatal("-A specified more than once"); + + if (strcasecmp(isc_commandline_argument, "none")) { + setact = ISC_TRUE; + activate = strtotime(isc_commandline_argument, + now, now); + } else { + unsetact = ISC_TRUE; + } + break; + case 'R': + if (setrev || unsetrev) + fatal("-R specified more than once"); + + if (strcasecmp(isc_commandline_argument, "none")) { + setrev = ISC_TRUE; + revoke = strtotime(isc_commandline_argument, + now, now); + } else { + unsetrev = ISC_TRUE; + } + break; + case 'I': + if (setinact || unsetinact) + fatal("-I specified more than once"); + + if (strcasecmp(isc_commandline_argument, "none")) { + setinact = ISC_TRUE; + inactive = strtotime(isc_commandline_argument, + now, now); + } else { + unsetinact = ISC_TRUE; + } + break; + case 'D': + if (setdel || unsetdel) + fatal("-D specified more than once"); + + if (strcasecmp(isc_commandline_argument, "none")) { + setdel = ISC_TRUE; + delete = strtotime(isc_commandline_argument, + now, now); + } else { + unsetdel = ISC_TRUE; + } + 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': + usage(); + + 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(verbose, mctx, &log); + + 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"); + + if (strchr(label, ':') == NULL && + engine != NULL && strlen(engine) != 0U) { + char *l; + int len; + + len = strlen(label) + strlen(engine) + 2; + l = isc_mem_allocate(mctx, len); + if (l == NULL) + fatal("cannot allocate memory"); + snprintf(l, len, "%s:%s", engine, 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.\n" + "If 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 (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); + + 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)); + + isc_buffer_init(&buf, filename, sizeof(filename) - 1); + + /* associate the key */ + ret = dst_key_fromlabel(name, alg, flags, protocol, + rdclass, engine, 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\n", + 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); + + 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); +} |
