dnssec-makekeyset.c 10.5 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
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
/*
 * 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 <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <isc/types.h>
#include <isc/assertions.h>
#include <isc/commandline.h>
#include <isc/boolean.h>
#include <isc/buffer.h>
#include <isc/error.h>
#include <isc/mem.h>
#include <isc/stdtime.h>
#include <isc/list.h>

#include <dns/types.h>
#include <dns/name.h>
#include <dns/fixedname.h>
#include <dns/db.h>
#include <dns/dbiterator.h>
#include <dns/rdata.h>
#include <dns/rdatalist.h>
#include <dns/rdataset.h>
#include <dns/rdatasetiter.h>
#include <dns/rdatastruct.h>
#include <dns/rdatatype.h>
#include <dns/result.h>
#include <dns/dnssec.h>
#include <dns/keyvalues.h>
#include <dns/secalg.h>
#include <dns/nxt.h>
#include <dns/time.h>
#include <dns/log.h>

#include <dst/dst.h>

#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;
static inline void
fatal(char *message) {
	fprintf(stderr, "%s\n", message);
	exit(1);
}

static inline void
check_result(isc_result_t result, char *message) {
	if (result != ISC_R_SUCCESS) {
		fprintf(stderr, "%s: %s\n", message,
			isc_result_totext(result));
		exit(1);
	}
}

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);
		check_result(result, "dns_time64_fromtext()");
	}
	if (*endp != '\0')
		check_result(ISC_R_FAILURE, "strtol()");

	return ((isc_stdtime_t) val);
}

static void
usage() {
	fprintf(stderr, "Usage:\n");
	fprintf(stderr, "\tkeysettool [options] domain keyfiles\n");

	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");
	fprintf(stderr, "\t\tSIG end time  - absolute|from start|from now (now + 30 days)\n");
	fprintf(stderr, "\t-t ttl\n");
	fprintf(stderr, "\t-v level:\n");
	fprintf(stderr, "\t\tverbose level (0)\n");

	fprintf(stderr, "\n");

	fprintf(stderr, "domain:\n");
	fprintf(stderr, "\tdomain name associated with the keys\n");
	fprintf(stderr, "Keyfiles:\n");
	fprintf(stderr, "\tid/alg:\t\t");
	fprintf(stderr, "key matching keyid, algorithm, and domain\n");
	exit(0);
}

int
main(int argc, char *argv[]) {
	int i, ch;
	char *startstr = NULL, *endstr = NULL;
	char tdomain[1025];
	dns_fixedname_t fdomain;
	dns_name_t *domain;
	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;

	dns_result_register();

	result = isc_mem_create(0, 0, &mctx);
	check_result(result, "isc_mem_create()");

	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)
				check_result(ISC_R_FAILURE, "isc_mem_strdup()");
			break;

		case 'e':
			endstr = isc_mem_strdup(mctx,
						isc_commandline_argument);
			if (endstr == NULL)
				check_result(ISC_R_FAILURE, "isc_mem_strdup()");
			break;

		case 't':
			endp = NULL;
			ttl = strtol(isc_commandline_argument, &endp, 0);
			if (*endp != '\0')
				check_result(ISC_R_FAILURE, "strtol()");
			break;

		case 'v':
			endp = NULL;
			verbose = strtol(isc_commandline_argument, &endp, 0);
			if (*endp != '\0')
				check_result(ISC_R_FAILURE, "strtol()");
			break;

		default:
			usage();

		}
	}

	argc -= isc_commandline_index;
	argv += isc_commandline_index;

	if (argc < 2)
		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;
		fprintf(stderr, "TTL not specified, assuming 3600\n");
	}

	if (verbose > 0) {
		RUNTIME_CHECK(isc_log_create(mctx, &log, &logconfig)
			      == ISC_R_SUCCESS);
		dns_log_init(log);
		RUNTIME_CHECK(isc_log_usechannel(logconfig, "default_stderr",
						 NULL, NULL) == ISC_R_SUCCESS);
	}

	dns_fixedname_init(&fdomain);
	domain = dns_fixedname_name(&fdomain);
239
	isc_buffer_init(&b, argv[0], strlen(argv[0]));
240
241
242
	isc_buffer_add(&b, strlen(argv[0]));
	result = dns_name_fromtext(domain, &b, dns_rootname, ISC_FALSE, NULL);
	check_result(result, "dns_name_fromtext()");
243
	isc_buffer_init(&b, tdomain, sizeof(tdomain) - 1);
244
245
	result = dns_name_totext(domain, ISC_FALSE, &b);
	check_result(result, "dns_name_totext()");
Bob Halley's avatar
Bob Halley committed
246
	isc_buffer_usedregion(&b, &r);
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
	tdomain[r.length] = 0;

	output = isc_mem_allocate(mctx, strlen(tdomain) + strlen("keyset") + 1);
	if (output == NULL)
		check_result(ISC_R_FAILURE, "isc_mem_allocate()");
	strcpy(output, tdomain);
	strcat(output, "keyset");

	argc -= 1;
	argv += 1;

	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++) {
		int id, alg;
		char *idstr = NULL, *algstr = NULL;

		idstr = argv[i];
		algstr = strchr(idstr, '/');
		if (algstr == NULL)
			usage();
		*algstr++ = 0;

		endp = NULL;
		id = strtol(idstr, &endp, 10);
		if (*endp != '\0')
			check_result(ISC_R_FAILURE, "strtol");

		endp = NULL;
		alg = strtol(algstr, &endp, 10);
		if (*endp != '\0')
			check_result(ISC_R_FAILURE, "strtol");

		key = NULL;
		result = dst_key_fromfile(tdomain, id, alg, DST_TYPE_PUBLIC,
					  mctx, &key);
		check_result (result, "dst_key_fromfile");
		if (dst_key_iszonekey(key)) {
			dst_key_t *zonekey = NULL;
			result = dst_key_fromfile(tdomain, id, alg,
						  DST_TYPE_PRIVATE, mctx,
						  &zonekey);
			check_result(result, "dst_key_fromfile()");
			keynode = isc_mem_get(mctx, sizeof (keynode_t));
			if (keynode == NULL)
				check_result(ISC_R_NOMEMORY, "isc_mem_get()");
			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)
			check_result(ISC_R_NOMEMORY, "isc_mem_get()");
		data = isc_mem_get(mctx, BUFSIZE);
		if (data == NULL)
			check_result(ISC_R_NOMEMORY, "isc_mem_get()");
309
		isc_buffer_init(&b, data, BUFSIZE);
310
311
		result = dst_key_todns(key, &b);
		check_result(result, "dst_key_todns()");
Bob Halley's avatar
Bob Halley committed
312
		isc_buffer_usedregion(&b, &r);
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
		dns_rdata_fromregion(rdata, dns_rdataclass_in,
				     dns_rdatatype_key, &r);
		ISC_LIST_APPEND(rdatalist.rdata, rdata, link);
		dst_key_free(key);
	}

	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,
			"no private zone key found; not self-signing\n");
	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)
			check_result(ISC_R_NOMEMORY, "isc_mem_get()");
		data = isc_mem_get(mctx, BUFSIZE);
		if (data == NULL)
			check_result(ISC_R_NOMEMORY, "isc_mem_get()");
342
		isc_buffer_init(&b, data, BUFSIZE);
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
		result = dns_dnssec_sign(domain, &rdataset, keynode->key,
					 &starttime, &endtime, mctx, &b, rdata);
		check_result(result, "dst_key_todns()");
		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);
	check_result(result, "dns_db_create()");

	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))
		dns_db_addrdataset(db, node, version, 0, &sigrdataset, 0, NULL);

	dns_db_detachnode(db, &node);
	dns_db_closeversion(db, &version, ISC_TRUE);
	result = dns_db_dump(db, version, output);
	check_result(result, "dns_db_dump()");

	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);
}