dnssec-makekeyset.c 11.7 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
/*
 * Copyright (C) 1999, 2000  Internet Software Consortium.
 * 
 * Permission to use, copy, modify, and 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 * CONSORTIUM 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.
 */

#include <config.h>

#include <stdlib.h>

#include <isc/commandline.h>
#include <isc/mem.h>
24
#include <isc/string.h>
Brian Wellington's avatar
Brian Wellington committed
25
#include <isc/util.h>
26
27

#include <dns/db.h>
28
29
30
#include <dns/dnssec.h>
#include <dns/fixedname.h>
#include <dns/log.h>
31
32
33
34
#include <dns/rdata.h>
#include <dns/rdatalist.h>
#include <dns/rdataset.h>
#include <dns/result.h>
35
#include <dns/secalg.h>
36
37
#include <dns/time.h>

38
39
#define PROGRAM "keysettool"

40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
#define BUFSIZE 2048

typedef struct keynode keynode_t;
struct keynode {
	dst_key_t *key;
	ISC_LINK(keynode_t) link;
};
typedef ISC_LIST(keynode_t) keylist_t;

static isc_stdtime_t starttime = 0, endtime = 0, now;
static int ttl = -1;
static int verbose;

static isc_mem_t *mctx = NULL;

static keylist_t keylist;
56

57
static inline void
58
59
60
61
62
63
64
65
fatal(char *format, ...) {
	va_list args;

	fprintf(stderr, "%s: ", PROGRAM);
	va_start(args, format);
	vfprintf(stderr, format, args);
	va_end(args);
	fprintf(stderr, "\n");
66
67
68
69
70
71
	exit(1);
}

static inline void
check_result(isc_result_t result, char *message) {
	if (result != ISC_R_SUCCESS) {
72
		fatal("%s: %s\n", message, isc_result_totext(result));
73
74
75
76
		exit(1);
	}
}

77
78
79
80
81
/* Not thread-safe! */
static char *
nametostr(dns_name_t *name) {
	isc_buffer_t b;
	isc_region_t r;
82
	isc_result_t result;
83
84
85
	static char data[1025];

	isc_buffer_init(&b, data, sizeof(data));
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
	result = dns_name_totext(name, ISC_FALSE, &b);
	check_result(result, "dns_name_totext()");
	isc_buffer_usedregion(&b, &r);
	r.base[r.length] = 0;
	return (char *) r.base;
}

/* Not thread-safe! */
static char *
algtostr(const dns_secalg_t alg) {
	isc_buffer_t b;
	isc_region_t r;
	isc_result_t result;
	static char data[10];

	isc_buffer_init(&b, data, sizeof(data));
	result = dns_secalg_totext(alg, &b);
	check_result(result, "dns_secalg_totext()");
104
105
106
107
108
109
	isc_buffer_usedregion(&b, &r);
	r.base[r.length] = 0;
	return (char *) r.base;
}


110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
static isc_stdtime_t
strtotime(char *str, isc_int64_t now, isc_int64_t base) {
	isc_int64_t val, offset;
	isc_result_t result;
	char *endp = "";

	if (str[0] == '+') {
		offset = strtol(str + 1, &endp, 0);
		val = base + offset;
	}
	else if (strncmp(str, "now+", 4) == 0) {
		offset = strtol(str + 4, &endp, 0);
		val = now + offset;
	}
	else {
		result = dns_time64_fromtext(str, &val);
126
127
		if (result != ISC_R_SUCCESS)
			fatal("time %s must be numeric", str);
128
129
	}
	if (*endp != '\0')
130
		fatal("time value %s is invalid", str);
131
132
133
134
135
136
137

	return ((isc_stdtime_t) val);
}

static void
usage() {
	fprintf(stderr, "Usage:\n");
138
	fprintf(stderr, "\tkeysettool [options] keys\n");
139
140
141
142
143
144
145

	fprintf(stderr, "\n");

	fprintf(stderr, "Options: (default value in parenthesis) \n");
	fprintf(stderr, "\t-s YYYYMMDDHHMMSS|+offset:\n");
	fprintf(stderr, "\t\tSIG start time - absolute|offset (now)\n");
	fprintf(stderr, "\t-e YYYYMMDDHHMMSS|+offset|\"now\"+offset]:\n");
146
147
	fprintf(stderr, "\t\tSIG end time  - "
			     "absolute|from start|from now (now + 30 days)\n");
148
149
150
151
152
153
	fprintf(stderr, "\t-t ttl\n");
	fprintf(stderr, "\t-v level:\n");
	fprintf(stderr, "\t\tverbose level (0)\n");

	fprintf(stderr, "\n");

154
155
	fprintf(stderr, "keys:\n");
	fprintf(stderr, "\tkeyfile (Kname+alg+id)\n");
156
157
158
159
160
161
162
163
	exit(0);
}

int
main(int argc, char *argv[]) {
	int i, ch;
	char *startstr = NULL, *endstr = NULL;
	dns_fixedname_t fdomain;
164
	dns_name_t *domain = NULL;
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
	char *output = NULL;
	char *endp;
	unsigned char *data;
	dns_db_t *db;
	dns_dbnode_t *node;
	dns_dbversion_t *version;
	dst_key_t *key = NULL;
	dns_rdata_t *rdata;
	dns_rdatalist_t rdatalist, sigrdatalist;
	dns_rdataset_t rdataset, sigrdataset;
	isc_result_t result;
	isc_buffer_t b;
	isc_region_t r;
	isc_log_t *log = NULL;
	isc_logconfig_t *logconfig;
	keynode_t *keynode;
181
	char *savedname = NULL;
182
183
184
185

	dns_result_register();

	result = isc_mem_create(0, 0, &mctx);
186
187
188
	if (result != ISC_R_SUCCESS)
		fatal("failed to create memory context: %s",
		      isc_result_totext(result));
189
190
191
192
193
194
195
196

	while ((ch = isc_commandline_parse(argc, argv, "s:e:t:v:")) != -1)
	{
		switch (ch) {
		case 's':
			startstr = isc_mem_strdup(mctx,
						  isc_commandline_argument);
			if (startstr == NULL)
197
				fatal("out of memory");
198
199
200
201
202
203
			break;

		case 'e':
			endstr = isc_mem_strdup(mctx,
						isc_commandline_argument);
			if (endstr == NULL)
204
				fatal("out of memory");
205
206
207
208
209
210
			break;

		case 't':
			endp = NULL;
			ttl = strtol(isc_commandline_argument, &endp, 0);
			if (*endp != '\0')
211
				fatal("TTL must be numeric");
212
213
214
215
216
217
			break;

		case 'v':
			endp = NULL;
			verbose = strtol(isc_commandline_argument, &endp, 0);
			if (*endp != '\0')
218
				fatal("verbose level must be numeric");
219
220
221
222
223
224
225
226
227
228
229
			break;

		default:
			usage();

		}
	}

	argc -= isc_commandline_index;
	argv += isc_commandline_index;

230
	if (argc < 1)
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
		usage();

	isc_stdtime_get(&now);

	if (startstr != NULL) {
		starttime = strtotime(startstr, now, now);
		isc_mem_free(mctx, startstr);
	}
	else
		starttime = now;

	if (endstr != NULL) {
		endtime = strtotime(endstr, now, starttime);
		isc_mem_free(mctx, endstr);
	}
	else
		endtime = starttime + (30 * 24 * 60 * 60);

	if (ttl == -1) {
		ttl = 3600;
251
252
		fprintf(stderr, "%s: TTL not specified, assuming 3600\n",
			PROGRAM);
253
254
255
256
257
	}

	if (verbose > 0) {
		RUNTIME_CHECK(isc_log_create(mctx, &log, &logconfig)
			      == ISC_R_SUCCESS);
258
		isc_log_setcontext(log);
259
		dns_log_init(log);
260
		dns_log_setcontext(log);
261
262
263
264
265
266
267
268
269
270
271
272
273
		RUNTIME_CHECK(isc_log_usechannel(logconfig, "default_stderr",
						 NULL, NULL) == ISC_R_SUCCESS);
	}

	dns_rdatalist_init(&rdatalist);
	rdatalist.rdclass = dns_rdataclass_in;
	rdatalist.type = dns_rdatatype_key;
	rdatalist.covers = 0;
	rdatalist.ttl = ttl;

	ISC_LIST_INIT(keylist);

	for (i = 0; i < argc; i++) {
274
275
276
277
278
279
280
281
282
		isc_uint16_t id;
		int alg;
		char *namestr = NULL;

		isc_buffer_init(&b, argv[i], strlen(argv[i]));
		isc_buffer_add(&b, strlen(argv[i]));
		result = dst_key_parsefilename(&b, mctx, &namestr, &id, &alg,
					       NULL);
		if (result != ISC_R_SUCCESS)
283
			fatal("%s is not a valid key filename", argv[i]);
284

285
286
287
288
289
290
291
292
293
294
295
		if (savedname == NULL) {
			savedname = isc_mem_strdup(mctx, namestr);
			if (savedname == NULL)
				fatal("out of memory");
		}
		else {
			if (strcmp(savedname, namestr) != 0)
				fatal("all keys must have the same owner - %s "
				      "and %s do not match",
				      savedname, namestr);
		}
296
297
298
299
300
		if (output == NULL) {
			output = isc_mem_allocate(mctx,
						  strlen(namestr) +
						  strlen("keyset") + 1);
			if (output == NULL)
301
				fatal("out of memory");
302
303
304
305
306
307
308
309
310
311
			strcpy(output, namestr);
			strcat(output, "keyset");
		}
		if (domain == NULL) {
			dns_fixedname_init(&fdomain);
			domain = dns_fixedname_name(&fdomain);
			isc_buffer_init(&b, namestr, strlen(namestr));
			isc_buffer_add(&b, strlen(namestr));
			result = dns_name_fromtext(domain, &b, dns_rootname,
						   ISC_FALSE, NULL);
312
313
314
			if (result != ISC_R_SUCCESS)
				fatal("%s is not a valid name: %s",
				      namestr, isc_result_totext(result));
315
		}
316
		key = NULL;
317
		result = dst_key_fromfile(namestr, id, alg, DST_TYPE_PUBLIC,
318
					  mctx, &key);
Andreas Gustafsson's avatar
style    
Andreas Gustafsson committed
319
		check_result(result, "dst_key_fromfile");
320
321
		if (dst_key_iszonekey(key)) {
			dst_key_t *zonekey = NULL;
322
			result = dst_key_fromfile(namestr, id, alg,
323
324
						  DST_TYPE_PRIVATE, mctx,
						  &zonekey);
325
326
			
			if (result != ISC_R_SUCCESS)
327
328
				fatal("failed to read key %s/%s/%d: %s",
				      namestr, id, algtostr(alg),
329
				      isc_result_totext(result));
330
331
			keynode = isc_mem_get(mctx, sizeof (keynode_t));
			if (keynode == NULL)
332
				fatal("out of memory");
333
334
335
336
337
338
			keynode->key = zonekey;
			ISC_LINK_INIT(keynode, link);
			ISC_LIST_APPEND(keylist, keynode, link);
		}
		rdata = isc_mem_get(mctx, sizeof(dns_rdata_t));
		if (rdata == NULL)
339
			fatal("out of memory");
340
341
		data = isc_mem_get(mctx, BUFSIZE);
		if (data == NULL)
342
			fatal("out of memory");
343
		isc_buffer_init(&b, data, BUFSIZE);
344
		result = dst_key_todns(key, &b);
345
		if (result != ISC_R_SUCCESS)
346
347
348
			fatal("failed to convert key %s/%s/%d to a DNS KEY: %s",
			      namestr, id, algtostr(alg),
			      isc_result_totext(result));
Bob Halley's avatar
Bob Halley committed
349
		isc_buffer_usedregion(&b, &r);
350
351
352
		dns_rdata_fromregion(rdata, dns_rdataclass_in,
				     dns_rdatatype_key, &r);
		ISC_LIST_APPEND(rdatalist.rdata, rdata, link);
353
		isc_mem_put(mctx, namestr, strlen(namestr) + 1);
354
355
356
		dst_key_free(key);
	}

357
358
	isc_mem_free(mctx, savedname);

359
360
361
362
363
364
365
366
367
368
369
370
	dns_rdataset_init(&rdataset);
	result = dns_rdatalist_tordataset(&rdatalist, &rdataset);
	check_result(result, "dns_rdatalist_tordataset()");

	dns_rdatalist_init(&sigrdatalist);
	sigrdatalist.rdclass = dns_rdataclass_in;
	sigrdatalist.type = dns_rdatatype_sig;
	sigrdatalist.covers = dns_rdatatype_key;
	sigrdatalist.ttl = ttl;

	if (ISC_LIST_EMPTY(keylist))
		fprintf(stderr,
371
372
			"%s: no private zone key found; not self-signing\n",
			PROGRAM);
373
374
375
376
377
378
	for (keynode = ISC_LIST_HEAD(keylist);
	     keynode != NULL;
	     keynode = ISC_LIST_NEXT(keynode, link))
	{
		rdata = isc_mem_get(mctx, sizeof(dns_rdata_t));
		if (rdata == NULL)
379
			fatal("out of memory");
380
381
		data = isc_mem_get(mctx, BUFSIZE);
		if (data == NULL)
382
			fatal("out of memory");
383
		isc_buffer_init(&b, data, BUFSIZE);
384
		result = dns_dnssec_sign(domain, &rdataset, keynode->key,
385
386
					 &starttime, &endtime, mctx, &b,
					 rdata);
387
		if (result != ISC_R_SUCCESS)
388
			fatal("failed to sign keyset with key %s/%s/%d: %s",
389
			      dst_key_name(keynode->key),
390
			      algtostr(dst_key_alg(keynode->key)),
391
392
			      dst_key_id(keynode->key),
			      isc_result_totext(result));
393
394
395
396
397
398
399
400
401
		ISC_LIST_APPEND(sigrdatalist.rdata, rdata, link);
		dns_rdataset_init(&sigrdataset);
		result = dns_rdatalist_tordataset(&sigrdatalist, &sigrdataset);
		check_result(result, "dns_rdatalist_tordataset()");
	}

	db = NULL;
	result = dns_db_create(mctx, "rbt", domain, ISC_FALSE,
			       dns_rdataclass_in, 0, NULL, &db);
402
403
	if (result != ISC_R_SUCCESS)
		fatal("failed to create a database for %s", nametostr(domain));
404
405
406
407
408
409
410
411
412
413

	version = NULL;
	dns_db_newversion(db, &version);

	node = NULL;
	result = dns_db_findnode(db, domain, ISC_TRUE, &node);
	check_result(result, "dns_db_findnode()");

	dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL);
	if (!ISC_LIST_EMPTY(keylist))
414
415
		dns_db_addrdataset(db, node, version, 0, &sigrdataset, 0,
				   NULL);
416
417
418
419

	dns_db_detachnode(db, &node);
	dns_db_closeversion(db, &version, ISC_TRUE);
	result = dns_db_dump(db, version, output);
420
421
422
	if (result != ISC_R_SUCCESS)
		fatal("failed to write database for %s to %s",
		      nametostr(domain), output);
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453

	dns_db_detach(&db);

	dns_rdataset_disassociate(&rdataset);
	while (!ISC_LIST_EMPTY(rdatalist.rdata)) {
		rdata = ISC_LIST_HEAD(rdatalist.rdata);
		ISC_LIST_UNLINK(rdatalist.rdata, rdata, link);
		isc_mem_put(mctx, rdata->data, BUFSIZE);
		isc_mem_put(mctx, rdata, sizeof *rdata);
	}
	while (!ISC_LIST_EMPTY(sigrdatalist.rdata)) {
		rdata = ISC_LIST_HEAD(sigrdatalist.rdata);
		ISC_LIST_UNLINK(sigrdatalist.rdata, rdata, link);
		isc_mem_put(mctx, rdata->data, BUFSIZE);
		isc_mem_put(mctx, rdata, sizeof *rdata);
	}

	while (!ISC_LIST_EMPTY(keylist)) {
		keynode = ISC_LIST_HEAD(keylist);
		ISC_LIST_UNLINK(keylist, keynode, link);
		dst_key_free(keynode->key);
		isc_mem_put(mctx, keynode, sizeof(keynode_t));
	}

	if (log != NULL)
		isc_log_destroy(&log);

	isc_mem_free(mctx, output);
	isc_mem_destroy(&mctx);
	return (0);
}