2 * Copyright (C) 2008-2012 Internet Systems Consortium, Inc. ("ISC")
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
14 * PERFORMANCE OF THIS SOFTWARE.
17 /* $Id: dnssec-dsfromkey.c,v 1.19.14.2 2011/09/05 23:45:53 tbox Exp $ */
25 #include <isc/buffer.h>
26 #include <isc/commandline.h>
27 #include <isc/entropy.h>
30 #include <isc/print.h>
31 #include <isc/string.h>
35 #include <dns/dbiterator.h>
37 #include <dns/fixedname.h>
39 #include <dns/keyvalues.h>
40 #include <dns/master.h>
42 #include <dns/rdata.h>
43 #include <dns/rdataclass.h>
44 #include <dns/rdataset.h>
45 #include <dns/rdatasetiter.h>
46 #include <dns/rdatatype.h>
47 #include <dns/result.h>
51 #include "dnssectool.h"
54 #define PATH_MAX 1024 /* AIX, WIN32, and others don't define this. */
57 const char *program = "dnssec-dsfromkey";
60 static dns_rdataclass_t rdclass;
61 static dns_fixedname_t fixed;
62 static dns_name_t *name = NULL;
63 static isc_mem_t *mctx = NULL;
66 initname(char *setname) {
70 dns_fixedname_init(&fixed);
71 name = dns_fixedname_name(&fixed);
73 isc_buffer_init(&buf, setname, strlen(setname));
74 isc_buffer_add(&buf, strlen(setname));
75 result = dns_name_fromtext(name, &buf, dns_rootname, 0, NULL);
80 loadsetfromfile(char *filename, dns_rdataset_t *rdataset) {
83 dns_dbnode_t *node = NULL;
84 char setname[DNS_NAME_FORMATSIZE];
86 dns_name_format(name, setname, sizeof(setname));
88 result = dns_db_create(mctx, "rbt", name, dns_dbtype_zone,
89 rdclass, 0, NULL, &db);
90 if (result != ISC_R_SUCCESS)
91 fatal("can't create database");
93 result = dns_db_load(db, filename);
94 if (result != ISC_R_SUCCESS && result != DNS_R_SEENINCLUDE)
95 fatal("can't load %s: %s", filename, isc_result_totext(result));
97 result = dns_db_findnode(db, name, ISC_FALSE, &node);
98 if (result != ISC_R_SUCCESS)
99 fatal("can't find %s node in %s", setname, filename);
101 result = dns_db_findrdataset(db, node, NULL, dns_rdatatype_dnskey,
102 0, 0, rdataset, NULL);
104 if (result == ISC_R_NOTFOUND)
105 fatal("no DNSKEY RR for %s in %s", setname, filename);
106 else if (result != ISC_R_SUCCESS)
107 fatal("dns_db_findrdataset");
110 dns_db_detachnode(db, &node);
117 loadkeyset(char *dirname, dns_rdataset_t *rdataset) {
119 char filename[PATH_MAX + 1];
122 dns_rdataset_init(rdataset);
124 isc_buffer_init(&buf, filename, sizeof(filename));
125 if (dirname != NULL) {
126 /* allow room for a trailing slash */
127 if (strlen(dirname) >= isc_buffer_availablelength(&buf))
128 return (ISC_R_NOSPACE);
129 isc_buffer_putstr(&buf, dirname);
130 if (dirname[strlen(dirname) - 1] != '/')
131 isc_buffer_putstr(&buf, "/");
134 if (isc_buffer_availablelength(&buf) < 7)
135 return (ISC_R_NOSPACE);
136 isc_buffer_putstr(&buf, "keyset-");
138 result = dns_name_tofilenametext(name, ISC_FALSE, &buf);
139 check_result(result, "dns_name_tofilenametext()");
140 if (isc_buffer_availablelength(&buf) == 0)
141 return (ISC_R_NOSPACE);
142 isc_buffer_putuint8(&buf, 0);
144 return (loadsetfromfile(filename, rdataset));
148 loadkey(char *filename, unsigned char *key_buf, unsigned int key_buf_size,
152 dst_key_t *key = NULL;
156 dns_rdata_init(rdata);
158 isc_buffer_init(&keyb, key_buf, key_buf_size);
160 result = dst_key_fromnamedfile(filename, NULL, DST_TYPE_PUBLIC,
162 if (result != ISC_R_SUCCESS)
163 fatal("invalid keyfile name %s: %s",
164 filename, isc_result_totext(result));
167 char keystr[DST_KEY_FORMATSIZE];
169 dst_key_format(key, keystr, sizeof(keystr));
170 fprintf(stderr, "%s: %s\n", program, keystr);
173 result = dst_key_todns(key, &keyb);
174 if (result != ISC_R_SUCCESS)
175 fatal("can't decode key");
177 isc_buffer_usedregion(&keyb, &r);
178 dns_rdata_fromregion(rdata, dst_key_class(key),
179 dns_rdatatype_dnskey, &r);
181 rdclass = dst_key_class(key);
183 dns_fixedname_init(&fixed);
184 name = dns_fixedname_name(&fixed);
185 result = dns_name_copy(dst_key_name(key), name, NULL);
186 if (result != ISC_R_SUCCESS)
187 fatal("can't copy name");
193 logkey(dns_rdata_t *rdata)
196 dst_key_t *key = NULL;
198 char keystr[DST_KEY_FORMATSIZE];
200 isc_buffer_init(&buf, rdata->data, rdata->length);
201 isc_buffer_add(&buf, rdata->length);
202 result = dst_key_fromdns(name, rdclass, &buf, mctx, &key);
203 if (result != ISC_R_SUCCESS)
206 dst_key_format(key, keystr, sizeof(keystr));
207 fprintf(stderr, "%s: %s\n", program, keystr);
213 emit(unsigned int dtype, isc_boolean_t showall, char *lookaside,
217 unsigned char buf[DNS_DS_BUFFERSIZE];
218 char text_buf[DST_KEY_MAXTEXTSIZE];
219 char name_buf[DNS_NAME_MAXWIRE];
221 isc_buffer_t textb, nameb, classb;
224 dns_rdata_dnskey_t dnskey;
226 isc_buffer_init(&textb, text_buf, sizeof(text_buf));
227 isc_buffer_init(&nameb, name_buf, sizeof(name_buf));
228 isc_buffer_init(&classb, class_buf, sizeof(class_buf));
232 result = dns_rdata_tostruct(rdata, &dnskey, NULL);
233 if (result != ISC_R_SUCCESS)
234 fatal("can't convert DNSKEY");
236 if ((dnskey.flags & DNS_KEYFLAG_KSK) == 0 && !showall)
239 result = dns_ds_buildrdata(name, rdata, dtype, buf, &ds);
240 if (result != ISC_R_SUCCESS)
241 fatal("can't build record");
243 result = dns_name_totext(name, ISC_FALSE, &nameb);
244 if (result != ISC_R_SUCCESS)
245 fatal("can't print name");
247 /* Add lookaside origin, if set */
248 if (lookaside != NULL) {
249 if (isc_buffer_availablelength(&nameb) < strlen(lookaside))
250 fatal("DLV origin '%s' is too long", lookaside);
251 isc_buffer_putstr(&nameb, lookaside);
252 if (lookaside[strlen(lookaside) - 1] != '.') {
253 if (isc_buffer_availablelength(&nameb) < 1)
254 fatal("DLV origin '%s' is too long", lookaside);
255 isc_buffer_putstr(&nameb, ".");
259 result = dns_rdata_totext(&ds, (dns_name_t *) NULL, &textb);
260 if (result != ISC_R_SUCCESS)
261 fatal("can't print rdata");
263 result = dns_rdataclass_totext(rdclass, &classb);
264 if (result != ISC_R_SUCCESS)
265 fatal("can't print class");
267 isc_buffer_usedregion(&nameb, &r);
268 printf("%.*s ", (int)r.length, r.base);
270 isc_buffer_usedregion(&classb, &r);
271 printf("%.*s", (int)r.length, r.base);
273 if (lookaside == NULL)
278 isc_buffer_usedregion(&textb, &r);
279 printf("%.*s\n", (int)r.length, r.base);
282 ISC_PLATFORM_NORETURN_PRE static void
283 usage(void) ISC_PLATFORM_NORETURN_POST;
287 fprintf(stderr, "Usage:\n");
288 fprintf(stderr, " %s options [-K dir] keyfile\n\n", program);
289 fprintf(stderr, " %s options [-K dir] [-c class] -s dnsname\n\n",
291 fprintf(stderr, " %s options -f zonefile (as zone name)\n\n", program);
292 fprintf(stderr, " %s options -f zonefile zonename\n\n", program);
293 fprintf(stderr, "Version: %s\n", VERSION);
294 fprintf(stderr, "Options:\n");
295 fprintf(stderr, " -v <verbose level>\n");
296 fprintf(stderr, " -K <directory>: directory in which to find "
297 "key file or keyset file\n");
298 fprintf(stderr, " -a algorithm: digest algorithm "
299 "(SHA-1, SHA-256, GOST or SHA-384)\n");
300 fprintf(stderr, " -1: use SHA-1\n");
301 fprintf(stderr, " -2: use SHA-256\n");
302 fprintf(stderr, " -l: add lookaside zone and print DLV records\n");
303 fprintf(stderr, " -s: read keyset from keyset-<dnsname> file\n");
304 fprintf(stderr, " -c class: rdata class for DS set (default: IN)\n");
305 fprintf(stderr, " -f file: read keyset from zone file\n");
306 fprintf(stderr, " -A: when used with -f, "
307 "include all keys in DS set, not just KSKs\n");
308 fprintf(stderr, "Output: DS or DLV RRs\n");
314 main(int argc, char **argv) {
315 char *algname = NULL, *classname = NULL;
316 char *filename = NULL, *dir = NULL, *namestr;
317 char *lookaside = NULL;
320 unsigned int dtype = DNS_DSDIGEST_SHA1;
321 isc_boolean_t both = ISC_TRUE;
322 isc_boolean_t usekeyset = ISC_FALSE;
323 isc_boolean_t showall = ISC_FALSE;
325 isc_log_t *log = NULL;
326 isc_entropy_t *ectx = NULL;
327 dns_rdataset_t rdataset;
330 dns_rdata_init(&rdata);
335 result = isc_mem_create(0, 0, &mctx);
336 if (result != ISC_R_SUCCESS)
337 fatal("out of memory");
339 dns_result_register();
341 isc_commandline_errprint = ISC_FALSE;
343 while ((ch = isc_commandline_parse(argc, argv,
344 "12Aa:c:d:Ff:K:l:sv:h")) != -1) {
347 dtype = DNS_DSDIGEST_SHA1;
351 dtype = DNS_DSDIGEST_SHA256;
358 algname = isc_commandline_argument;
362 classname = isc_commandline_argument;
365 fprintf(stderr, "%s: the -d option is deprecated; "
366 "use -K\n", program);
369 dir = isc_commandline_argument;
370 if (strlen(dir) == 0U)
371 fatal("directory must be non-empty string");
374 filename = isc_commandline_argument;
377 lookaside = isc_commandline_argument;
378 if (strlen(lookaside) == 0U)
379 fatal("lookaside must be a non-empty string");
382 usekeyset = ISC_TRUE;
385 verbose = strtol(isc_commandline_argument, &endp, 0);
387 fatal("-v must be followed by a number");
390 /* Reserved for FIPS mode */
393 if (isc_commandline_option != '?')
394 fprintf(stderr, "%s: invalid argument -%c\n",
395 program, isc_commandline_option);
401 fprintf(stderr, "%s: unhandled option -%c\n",
402 program, isc_commandline_option);
407 if (algname != NULL) {
408 if (strcasecmp(algname, "SHA1") == 0 ||
409 strcasecmp(algname, "SHA-1") == 0)
410 dtype = DNS_DSDIGEST_SHA1;
411 else if (strcasecmp(algname, "SHA256") == 0 ||
412 strcasecmp(algname, "SHA-256") == 0)
413 dtype = DNS_DSDIGEST_SHA256;
414 #ifdef HAVE_OPENSSL_GOST
415 else if (strcasecmp(algname, "GOST") == 0)
416 dtype = DNS_DSDIGEST_GOST;
418 else if (strcasecmp(algname, "SHA384") == 0 ||
419 strcasecmp(algname, "SHA-384") == 0)
420 dtype = DNS_DSDIGEST_SHA384;
422 fatal("unknown algorithm %s", algname);
425 rdclass = strtoclass(classname);
427 if (usekeyset && filename != NULL)
428 fatal("cannot use both -s and -f");
430 /* When not using -f, -A is implicit */
431 if (filename == NULL)
434 if (argc < isc_commandline_index + 1 && filename == NULL)
435 fatal("the key file name was not specified");
436 if (argc > isc_commandline_index + 1)
437 fatal("extraneous arguments");
440 setup_entropy(mctx, NULL, &ectx);
441 result = isc_hash_create(mctx, ectx, DNS_NAME_MAXWIRE);
442 if (result != ISC_R_SUCCESS)
443 fatal("could not initialize hash");
444 result = dst_lib_init(mctx, ectx,
445 ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
446 if (result != ISC_R_SUCCESS)
447 fatal("could not initialize dst: %s",
448 isc_result_totext(result));
449 isc_entropy_stopcallbacksources(ectx);
451 setup_logging(verbose, mctx, &log);
453 dns_rdataset_init(&rdataset);
455 if (usekeyset || filename != NULL) {
456 if (argc < isc_commandline_index + 1 && filename != NULL) {
457 /* using zone name as the zone file name */
460 namestr = argv[isc_commandline_index];
462 result = initname(namestr);
463 if (result != ISC_R_SUCCESS)
464 fatal("could not initialize name %s", namestr);
467 result = loadkeyset(dir, &rdataset);
469 result = loadsetfromfile(filename, &rdataset);
471 if (result != ISC_R_SUCCESS)
472 fatal("could not load DNSKEY set: %s\n",
473 isc_result_totext(result));
475 for (result = dns_rdataset_first(&rdataset);
476 result == ISC_R_SUCCESS;
477 result = dns_rdataset_next(&rdataset)) {
478 dns_rdata_init(&rdata);
479 dns_rdataset_current(&rdataset, &rdata);
485 emit(DNS_DSDIGEST_SHA1, showall, lookaside,
487 emit(DNS_DSDIGEST_SHA256, showall, lookaside,
490 emit(dtype, showall, lookaside, &rdata);
493 unsigned char key_buf[DST_KEY_MAXSIZE];
495 loadkey(argv[isc_commandline_index], key_buf,
496 DST_KEY_MAXSIZE, &rdata);
499 emit(DNS_DSDIGEST_SHA1, showall, lookaside, &rdata);
500 emit(DNS_DSDIGEST_SHA256, showall, lookaside, &rdata);
502 emit(dtype, showall, lookaside, &rdata);
505 if (dns_rdataset_isassociated(&rdataset))
506 dns_rdataset_disassociate(&rdataset);
507 cleanup_logging(&log);
510 cleanup_entropy(&ectx);
513 isc_mem_stats(mctx, stdout);
514 isc_mem_destroy(&mctx);
517 if (ferror(stdout)) {
518 fprintf(stderr, "write error\n");