2 * Copyright (C) 2004-2012 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001, 2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
24 #include <isc/buffer.h>
25 #include <isc/entropy.h>
28 #include <isc/string.h>
31 #include <dns/dnssec.h>
32 #include <dns/fixedname.h>
33 #include <dns/keyvalues.h>
35 #include <dns/message.h>
37 #include <dns/rdata.h>
38 #include <dns/rdatalist.h>
39 #include <dns/rdataset.h>
40 #include <dns/rdatastruct.h>
41 #include <dns/result.h>
46 #include <dst/gssapi.h>
48 #define TKEY_RANDOM_AMOUNT 16
50 #define RETERR(x) do { \
52 if (result != ISC_R_SUCCESS) \
57 tkey_log(const char *fmt, ...) ISC_FORMAT_PRINTF(1, 2);
60 tkey_log(const char *fmt, ...) {
64 isc_log_vwrite(dns_lctx, DNS_LOGCATEGORY_GENERAL,
65 DNS_LOGMODULE_REQUEST, ISC_LOG_DEBUG(4), fmt, ap);
70 _dns_tkey_dumpmessage(dns_message_t *msg) {
72 unsigned char output[4096];
75 isc_buffer_init(&outbuf, output, sizeof(output));
76 result = dns_message_totext(msg, &dns_master_style_debug, 0,
78 if (result != ISC_R_SUCCESS)
79 fprintf(stderr, "Warning: dns_message_totext returned: %s\n",
80 dns_result_totext(result));
81 fprintf(stderr, "%.*s\n", (int)isc_buffer_usedlength(&outbuf),
82 (char *)isc_buffer_base(&outbuf));
86 dns_tkeyctx_create(isc_mem_t *mctx, isc_entropy_t *ectx, dns_tkeyctx_t **tctxp)
90 REQUIRE(mctx != NULL);
91 REQUIRE(ectx != NULL);
92 REQUIRE(tctxp != NULL && *tctxp == NULL);
94 tctx = isc_mem_get(mctx, sizeof(dns_tkeyctx_t));
96 return (ISC_R_NOMEMORY);
98 isc_mem_attach(mctx, &tctx->mctx);
100 isc_entropy_attach(ectx, &tctx->ectx);
103 tctx->gsscred = NULL;
104 tctx->gssapi_keytab = NULL;
107 return (ISC_R_SUCCESS);
111 dns_tkeyctx_destroy(dns_tkeyctx_t **tctxp) {
115 REQUIRE(tctxp != NULL && *tctxp != NULL);
120 if (tctx->dhkey != NULL)
121 dst_key_free(&tctx->dhkey);
122 if (tctx->domain != NULL) {
123 if (dns_name_dynamic(tctx->domain))
124 dns_name_free(tctx->domain, mctx);
125 isc_mem_put(mctx, tctx->domain, sizeof(dns_name_t));
127 if (tctx->gssapi_keytab != NULL) {
128 isc_mem_free(mctx, tctx->gssapi_keytab);
130 if (tctx->gsscred != NULL)
131 dst_gssapi_releasecred(&tctx->gsscred);
132 isc_entropy_detach(&tctx->ectx);
133 isc_mem_put(mctx, tctx, sizeof(dns_tkeyctx_t));
134 isc_mem_detach(&mctx);
139 add_rdata_to_list(dns_message_t *msg, dns_name_t *name, dns_rdata_t *rdata,
140 isc_uint32_t ttl, dns_namelist_t *namelist)
143 isc_region_t r, newr;
144 dns_rdata_t *newrdata = NULL;
145 dns_name_t *newname = NULL;
146 dns_rdatalist_t *newlist = NULL;
147 dns_rdataset_t *newset = NULL;
148 isc_buffer_t *tmprdatabuf = NULL;
150 RETERR(dns_message_gettemprdata(msg, &newrdata));
152 dns_rdata_toregion(rdata, &r);
153 RETERR(isc_buffer_allocate(msg->mctx, &tmprdatabuf, r.length));
154 isc_buffer_availableregion(tmprdatabuf, &newr);
155 memcpy(newr.base, r.base, r.length);
156 dns_rdata_fromregion(newrdata, rdata->rdclass, rdata->type, &newr);
157 dns_message_takebuffer(msg, &tmprdatabuf);
159 RETERR(dns_message_gettempname(msg, &newname));
160 dns_name_init(newname, NULL);
161 RETERR(dns_name_dup(name, msg->mctx, newname));
163 RETERR(dns_message_gettemprdatalist(msg, &newlist));
164 newlist->rdclass = newrdata->rdclass;
165 newlist->type = newrdata->type;
168 ISC_LIST_INIT(newlist->rdata);
169 ISC_LIST_APPEND(newlist->rdata, newrdata, link);
171 RETERR(dns_message_gettemprdataset(msg, &newset));
172 dns_rdataset_init(newset);
173 RETERR(dns_rdatalist_tordataset(newlist, newset));
175 ISC_LIST_INIT(newname->list);
176 ISC_LIST_APPEND(newname->list, newset, link);
178 ISC_LIST_APPEND(*namelist, newname, link);
180 return (ISC_R_SUCCESS);
183 if (newrdata != NULL) {
184 if (ISC_LINK_LINKED(newrdata, link)) {
185 INSIST(newlist != NULL);
186 ISC_LIST_UNLINK(newlist->rdata, newrdata, link);
188 dns_message_puttemprdata(msg, &newrdata);
191 dns_message_puttempname(msg, &newname);
192 if (newset != NULL) {
193 dns_rdataset_disassociate(newset);
194 dns_message_puttemprdataset(msg, &newset);
197 dns_message_puttemprdatalist(msg, &newlist);
202 free_namelist(dns_message_t *msg, dns_namelist_t *namelist) {
206 while (!ISC_LIST_EMPTY(*namelist)) {
207 name = ISC_LIST_HEAD(*namelist);
208 ISC_LIST_UNLINK(*namelist, name, link);
209 while (!ISC_LIST_EMPTY(name->list)) {
210 set = ISC_LIST_HEAD(name->list);
211 ISC_LIST_UNLINK(name->list, set, link);
212 dns_message_puttemprdataset(msg, &set);
214 dns_message_puttempname(msg, &name);
219 compute_secret(isc_buffer_t *shared, isc_region_t *queryrandomness,
220 isc_region_t *serverrandomness, isc_buffer_t *secret)
224 unsigned char digests[32];
227 isc_buffer_usedregion(shared, &r);
230 * MD5 ( query data | DH value ).
232 isc_md5_init(&md5ctx);
233 isc_md5_update(&md5ctx, queryrandomness->base,
234 queryrandomness->length);
235 isc_md5_update(&md5ctx, r.base, r.length);
236 isc_md5_final(&md5ctx, digests);
239 * MD5 ( server data | DH value ).
241 isc_md5_init(&md5ctx);
242 isc_md5_update(&md5ctx, serverrandomness->base,
243 serverrandomness->length);
244 isc_md5_update(&md5ctx, r.base, r.length);
245 isc_md5_final(&md5ctx, &digests[ISC_MD5_DIGESTLENGTH]);
248 * XOR ( DH value, MD5-1 | MD5-2).
250 isc_buffer_availableregion(secret, &r);
251 isc_buffer_usedregion(shared, &r2);
252 if (r.length < sizeof(digests) || r.length < r2.length)
253 return (ISC_R_NOSPACE);
254 if (r2.length > sizeof(digests)) {
255 memcpy(r.base, r2.base, r2.length);
256 for (i = 0; i < sizeof(digests); i++)
257 r.base[i] ^= digests[i];
258 isc_buffer_add(secret, r2.length);
260 memcpy(r.base, digests, sizeof(digests));
261 for (i = 0; i < r2.length; i++)
262 r.base[i] ^= r2.base[i];
263 isc_buffer_add(secret, sizeof(digests));
265 return (ISC_R_SUCCESS);
270 process_dhtkey(dns_message_t *msg, dns_name_t *signer, dns_name_t *name,
271 dns_rdata_tkey_t *tkeyin, dns_tkeyctx_t *tctx,
272 dns_rdata_tkey_t *tkeyout,
273 dns_tsig_keyring_t *ring, dns_namelist_t *namelist)
275 isc_result_t result = ISC_R_SUCCESS;
276 dns_name_t *keyname, ourname;
277 dns_rdataset_t *keyset = NULL;
278 dns_rdata_t keyrdata = DNS_RDATA_INIT, ourkeyrdata = DNS_RDATA_INIT;
279 isc_boolean_t found_key = ISC_FALSE, found_incompatible = ISC_FALSE;
280 dst_key_t *pubkey = NULL;
281 isc_buffer_t ourkeybuf, *shared = NULL;
282 isc_region_t r, r2, ourkeyr;
283 unsigned char keydata[DST_KEY_MAXSIZE];
284 unsigned int sharedsize;
286 unsigned char *randomdata = NULL, secretdata[256];
289 if (tctx->dhkey == NULL) {
290 tkey_log("process_dhtkey: tkey-dhkey not defined");
291 tkeyout->error = dns_tsigerror_badalg;
292 return (DNS_R_REFUSED);
295 if (!dns_name_equal(&tkeyin->algorithm, DNS_TSIG_HMACMD5_NAME)) {
296 tkey_log("process_dhtkey: algorithms other than "
297 "hmac-md5 are not supported");
298 tkeyout->error = dns_tsigerror_badalg;
299 return (ISC_R_SUCCESS);
303 * Look for a DH KEY record that will work with ours.
305 for (result = dns_message_firstname(msg, DNS_SECTION_ADDITIONAL);
306 result == ISC_R_SUCCESS && !found_key;
307 result = dns_message_nextname(msg, DNS_SECTION_ADDITIONAL)) {
309 dns_message_currentname(msg, DNS_SECTION_ADDITIONAL, &keyname);
311 result = dns_message_findtype(keyname, dns_rdatatype_key, 0,
313 if (result != ISC_R_SUCCESS)
316 for (result = dns_rdataset_first(keyset);
317 result == ISC_R_SUCCESS && !found_key;
318 result = dns_rdataset_next(keyset)) {
319 dns_rdataset_current(keyset, &keyrdata);
321 result = dns_dnssec_keyfromrdata(keyname, &keyrdata,
323 if (result != ISC_R_SUCCESS) {
324 dns_rdata_reset(&keyrdata);
327 if (dst_key_alg(pubkey) == DNS_KEYALG_DH) {
328 if (dst_key_paramcompare(pubkey, tctx->dhkey))
330 found_key = ISC_TRUE;
334 found_incompatible = ISC_TRUE;
336 dst_key_free(&pubkey);
337 dns_rdata_reset(&keyrdata);
342 if (found_incompatible) {
343 tkey_log("process_dhtkey: found an incompatible key");
344 tkeyout->error = dns_tsigerror_badkey;
345 return (ISC_R_SUCCESS);
347 tkey_log("process_dhtkey: failed to find a key");
348 return (DNS_R_FORMERR);
352 RETERR(add_rdata_to_list(msg, keyname, &keyrdata, ttl, namelist));
354 isc_buffer_init(&ourkeybuf, keydata, sizeof(keydata));
355 RETERR(dst_key_todns(tctx->dhkey, &ourkeybuf));
356 isc_buffer_usedregion(&ourkeybuf, &ourkeyr);
357 dns_rdata_fromregion(&ourkeyrdata, dns_rdataclass_any,
358 dns_rdatatype_key, &ourkeyr);
360 dns_name_init(&ourname, NULL);
361 dns_name_clone(dst_key_name(tctx->dhkey), &ourname);
364 * XXXBEW The TTL should be obtained from the database, if it exists.
366 RETERR(add_rdata_to_list(msg, &ourname, &ourkeyrdata, 0, namelist));
368 RETERR(dst_key_secretsize(tctx->dhkey, &sharedsize));
369 RETERR(isc_buffer_allocate(msg->mctx, &shared, sharedsize));
371 result = dst_key_computesecret(pubkey, tctx->dhkey, shared);
372 if (result != ISC_R_SUCCESS) {
373 tkey_log("process_dhtkey: failed to compute shared secret: %s",
374 isc_result_totext(result));
377 dst_key_free(&pubkey);
379 isc_buffer_init(&secret, secretdata, sizeof(secretdata));
381 randomdata = isc_mem_get(tkeyout->mctx, TKEY_RANDOM_AMOUNT);
382 if (randomdata == NULL)
385 result = isc_entropy_getdata(tctx->ectx, randomdata,
386 TKEY_RANDOM_AMOUNT, NULL, 0);
387 if (result != ISC_R_SUCCESS) {
388 tkey_log("process_dhtkey: failed to obtain entropy: %s",
389 isc_result_totext(result));
394 r.length = TKEY_RANDOM_AMOUNT;
395 r2.base = tkeyin->key;
396 r2.length = tkeyin->keylen;
397 RETERR(compute_secret(shared, &r2, &r, &secret));
398 isc_buffer_free(&shared);
400 RETERR(dns_tsigkey_create(name, &tkeyin->algorithm,
401 isc_buffer_base(&secret),
402 isc_buffer_usedlength(&secret),
403 ISC_TRUE, signer, tkeyin->inception,
404 tkeyin->expire, ring->mctx, ring, NULL));
406 /* This key is good for a long time */
407 tkeyout->inception = tkeyin->inception;
408 tkeyout->expire = tkeyin->expire;
410 tkeyout->key = randomdata;
411 tkeyout->keylen = TKEY_RANDOM_AMOUNT;
413 return (ISC_R_SUCCESS);
416 if (!ISC_LIST_EMPTY(*namelist))
417 free_namelist(msg, namelist);
419 isc_buffer_free(&shared);
421 dst_key_free(&pubkey);
422 if (randomdata != NULL)
423 isc_mem_put(tkeyout->mctx, randomdata, TKEY_RANDOM_AMOUNT);
428 process_gsstkey(dns_name_t *name, dns_rdata_tkey_t *tkeyin,
429 dns_tkeyctx_t *tctx, dns_rdata_tkey_t *tkeyout,
430 dns_tsig_keyring_t *ring)
432 isc_result_t result = ISC_R_SUCCESS;
433 dst_key_t *dstkey = NULL;
434 dns_tsigkey_t *tsigkey = NULL;
435 dns_fixedname_t principal;
437 isc_region_t intoken;
438 isc_buffer_t *outtoken = NULL;
439 gss_ctx_id_t gss_ctx = NULL;
442 * You have to define either a gss credential (principal) to
443 * accept with tkey-gssapi-credential, or you have to
444 * configure a specific keytab (with tkey-gssapi-keytab) in
445 * order to use gsstkey
447 if (tctx->gsscred == NULL && tctx->gssapi_keytab == NULL) {
448 tkey_log("process_gsstkey(): no tkey-gssapi-credential "
449 "or tkey-gssapi-keytab configured");
450 return (ISC_R_NOPERM);
453 if (!dns_name_equal(&tkeyin->algorithm, DNS_TSIG_GSSAPI_NAME) &&
454 !dns_name_equal(&tkeyin->algorithm, DNS_TSIG_GSSAPIMS_NAME)) {
455 tkeyout->error = dns_tsigerror_badalg;
456 tkey_log("process_gsstkey(): dns_tsigerror_badalg"); /* XXXSRA */
457 return (ISC_R_SUCCESS);
461 * XXXDCL need to check for key expiry per 4.1.1
462 * XXXDCL need a way to check fully established, perhaps w/key_flags
465 intoken.base = tkeyin->key;
466 intoken.length = tkeyin->keylen;
468 result = dns_tsigkey_find(&tsigkey, name, &tkeyin->algorithm, ring);
469 if (result == ISC_R_SUCCESS)
470 gss_ctx = dst_key_getgssctx(tsigkey->key);
472 dns_fixedname_init(&principal);
475 * Note that tctx->gsscred may be NULL if tctx->gssapi_keytab is set
477 result = dst_gssapi_acceptctx(tctx->gsscred, tctx->gssapi_keytab,
480 dns_fixedname_name(&principal),
482 if (result == DNS_R_INVALIDTKEY) {
484 dns_tsigkey_detach(&tsigkey);
485 tkeyout->error = dns_tsigerror_badkey;
486 tkey_log("process_gsstkey(): dns_tsigerror_badkey"); /* XXXSRA */
487 return (ISC_R_SUCCESS);
489 if (result != DNS_R_CONTINUE && result != ISC_R_SUCCESS)
492 * XXXDCL Section 4.1.3: Limit GSS_S_CONTINUE_NEEDED to 10 times.
495 isc_stdtime_get(&now);
497 if (tsigkey == NULL) {
499 OM_uint32 gret, minor, lifetime;
503 RETERR(dst_key_fromgssapi(name, gss_ctx, ring->mctx,
506 * Limit keys to 1 hour or the context's lifetime whichever
511 gret = gss_context_time(&minor, gss_ctx, &lifetime);
512 if (gret == GSS_S_COMPLETE && now + lifetime < expire)
513 expire = now + lifetime;
515 RETERR(dns_tsigkey_createfromkey(name, &tkeyin->algorithm,
517 dns_fixedname_name(&principal),
518 now, expire, ring->mctx, ring,
520 dst_key_free(&dstkey);
521 tkeyout->inception = now;
522 tkeyout->expire = expire;
524 tkeyout->inception = tsigkey->inception;
525 tkeyout->expire = tsigkey->expire;
526 dns_tsigkey_detach(&tsigkey);
530 tkeyout->key = isc_mem_get(tkeyout->mctx,
531 isc_buffer_usedlength(outtoken));
532 if (tkeyout->key == NULL) {
533 result = ISC_R_NOMEMORY;
536 tkeyout->keylen = isc_buffer_usedlength(outtoken);
537 memcpy(tkeyout->key, isc_buffer_base(outtoken),
538 isc_buffer_usedlength(outtoken));
539 isc_buffer_free(&outtoken);
541 tkeyout->key = isc_mem_get(tkeyout->mctx, tkeyin->keylen);
542 if (tkeyout->key == NULL) {
543 result = ISC_R_NOMEMORY;
546 tkeyout->keylen = tkeyin->keylen;
547 memcpy(tkeyout->key, tkeyin->key, tkeyin->keylen);
550 tkeyout->error = dns_rcode_noerror;
552 tkey_log("process_gsstkey(): dns_tsigerror_noerror"); /* XXXSRA */
554 return (ISC_R_SUCCESS);
558 dns_tsigkey_detach(&tsigkey);
561 dst_key_free(&dstkey);
563 if (outtoken != NULL)
564 isc_buffer_free(&outtoken);
566 tkey_log("process_gsstkey(): %s",
567 isc_result_totext(result)); /* XXXSRA */
573 process_deletetkey(dns_name_t *signer, dns_name_t *name,
574 dns_rdata_tkey_t *tkeyin, dns_rdata_tkey_t *tkeyout,
575 dns_tsig_keyring_t *ring)
578 dns_tsigkey_t *tsigkey = NULL;
579 dns_name_t *identity;
581 result = dns_tsigkey_find(&tsigkey, name, &tkeyin->algorithm, ring);
582 if (result != ISC_R_SUCCESS) {
583 tkeyout->error = dns_tsigerror_badname;
584 return (ISC_R_SUCCESS);
588 * Only allow a delete if the identity that created the key is the
589 * same as the identity that signed the message.
591 identity = dns_tsigkey_identity(tsigkey);
592 if (identity == NULL || !dns_name_equal(identity, signer)) {
593 dns_tsigkey_detach(&tsigkey);
594 return (DNS_R_REFUSED);
598 * Set the key to be deleted when no references are left. If the key
599 * was not generated with TKEY and is in the config file, it may be
602 dns_tsigkey_setdeleted(tsigkey);
604 /* Release the reference */
605 dns_tsigkey_detach(&tsigkey);
607 return (ISC_R_SUCCESS);
611 dns_tkey_processquery(dns_message_t *msg, dns_tkeyctx_t *tctx,
612 dns_tsig_keyring_t *ring)
614 isc_result_t result = ISC_R_SUCCESS;
615 dns_rdata_tkey_t tkeyin, tkeyout;
616 isc_boolean_t freetkeyin = ISC_FALSE;
617 dns_name_t *qname, *name, *keyname, *signer, tsigner;
618 dns_fixedname_t fkeyname;
619 dns_rdataset_t *tkeyset;
621 dns_namelist_t namelist;
622 char tkeyoutdata[512];
623 isc_buffer_t tkeyoutbuf;
625 REQUIRE(msg != NULL);
626 REQUIRE(tctx != NULL);
627 REQUIRE(ring != NULL);
629 ISC_LIST_INIT(namelist);
632 * Interpret the question section.
634 result = dns_message_firstname(msg, DNS_SECTION_QUESTION);
635 if (result != ISC_R_SUCCESS)
636 return (DNS_R_FORMERR);
639 dns_message_currentname(msg, DNS_SECTION_QUESTION, &qname);
642 * Look for a TKEY record that matches the question.
646 result = dns_message_findname(msg, DNS_SECTION_ADDITIONAL, qname,
647 dns_rdatatype_tkey, 0, &name, &tkeyset);
648 if (result != ISC_R_SUCCESS) {
650 * Try the answer section, since that's where Win2000
653 if (dns_message_findname(msg, DNS_SECTION_ANSWER, qname,
654 dns_rdatatype_tkey, 0, &name,
655 &tkeyset) != ISC_R_SUCCESS) {
656 result = DNS_R_FORMERR;
657 tkey_log("dns_tkey_processquery: couldn't find a TKEY "
658 "matching the question");
662 result = dns_rdataset_first(tkeyset);
663 if (result != ISC_R_SUCCESS) {
664 result = DNS_R_FORMERR;
667 dns_rdata_init(&rdata);
668 dns_rdataset_current(tkeyset, &rdata);
670 RETERR(dns_rdata_tostruct(&rdata, &tkeyin, NULL));
671 freetkeyin = ISC_TRUE;
673 if (tkeyin.error != dns_rcode_noerror) {
674 result = DNS_R_FORMERR;
679 * Before we go any farther, verify that the message was signed.
680 * GSSAPI TKEY doesn't require a signature, the rest do.
682 dns_name_init(&tsigner, NULL);
683 result = dns_message_signer(msg, &tsigner);
684 if (result != ISC_R_SUCCESS) {
685 if (tkeyin.mode == DNS_TKEYMODE_GSSAPI &&
686 result == ISC_R_NOTFOUND)
689 tkey_log("dns_tkey_processquery: query was not "
690 "properly signed - rejecting");
691 result = DNS_R_FORMERR;
697 tkeyout.common.rdclass = tkeyin.common.rdclass;
698 tkeyout.common.rdtype = tkeyin.common.rdtype;
699 ISC_LINK_INIT(&tkeyout.common, link);
700 tkeyout.mctx = msg->mctx;
702 dns_name_init(&tkeyout.algorithm, NULL);
703 dns_name_clone(&tkeyin.algorithm, &tkeyout.algorithm);
705 tkeyout.inception = tkeyout.expire = 0;
706 tkeyout.mode = tkeyin.mode;
708 tkeyout.keylen = tkeyout.otherlen = 0;
709 tkeyout.key = tkeyout.other = NULL;
712 * A delete operation must have a fully specified key name. If this
713 * is not a delete, we do the following:
715 * keyname = qname + defaultdomain
717 * keyname = <random hex> + defaultdomain
719 if (tkeyin.mode != DNS_TKEYMODE_DELETE) {
720 dns_tsigkey_t *tsigkey = NULL;
722 if (tctx->domain == NULL && tkeyin.mode != DNS_TKEYMODE_GSSAPI) {
723 tkey_log("dns_tkey_processquery: tkey-domain not set");
724 result = DNS_R_REFUSED;
728 dns_fixedname_init(&fkeyname);
729 keyname = dns_fixedname_name(&fkeyname);
731 if (!dns_name_equal(qname, dns_rootname)) {
732 unsigned int n = dns_name_countlabels(qname);
733 RUNTIME_CHECK(dns_name_copy(qname, keyname, NULL)
735 dns_name_getlabelsequence(keyname, 0, n - 1, keyname);
737 static char hexdigits[16] = {
738 '0', '1', '2', '3', '4', '5', '6', '7',
739 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
740 unsigned char randomdata[16];
745 result = isc_entropy_getdata(tctx->ectx,
749 if (result != ISC_R_SUCCESS)
752 for (i = 0, j = 0; i < sizeof(randomdata); i++) {
753 unsigned char val = randomdata[i];
754 randomtext[j++] = hexdigits[val >> 4];
755 randomtext[j++] = hexdigits[val & 0xF];
757 isc_buffer_init(&b, randomtext, sizeof(randomtext));
758 isc_buffer_add(&b, sizeof(randomtext));
759 result = dns_name_fromtext(keyname, &b, NULL, 0, NULL);
760 if (result != ISC_R_SUCCESS)
764 if (tkeyin.mode == DNS_TKEYMODE_GSSAPI) {
765 /* Yup. This is a hack */
766 result = dns_name_concatenate(keyname, dns_rootname,
768 if (result != ISC_R_SUCCESS)
771 result = dns_name_concatenate(keyname, tctx->domain,
773 if (result != ISC_R_SUCCESS)
777 result = dns_tsigkey_find(&tsigkey, keyname, NULL, ring);
779 if (result == ISC_R_SUCCESS) {
780 tkeyout.error = dns_tsigerror_badname;
781 dns_tsigkey_detach(&tsigkey);
782 goto failure_with_tkey;
783 } else if (result != ISC_R_NOTFOUND)
788 switch (tkeyin.mode) {
789 case DNS_TKEYMODE_DIFFIEHELLMAN:
790 tkeyout.error = dns_rcode_noerror;
791 RETERR(process_dhtkey(msg, signer, keyname, &tkeyin,
792 tctx, &tkeyout, ring,
795 case DNS_TKEYMODE_GSSAPI:
796 tkeyout.error = dns_rcode_noerror;
797 RETERR(process_gsstkey(keyname, &tkeyin, tctx,
800 case DNS_TKEYMODE_DELETE:
801 tkeyout.error = dns_rcode_noerror;
802 RETERR(process_deletetkey(signer, keyname, &tkeyin,
805 case DNS_TKEYMODE_SERVERASSIGNED:
806 case DNS_TKEYMODE_RESOLVERASSIGNED:
807 result = DNS_R_NOTIMP;
810 tkeyout.error = dns_tsigerror_badmode;
814 dns_rdata_init(&rdata);
815 isc_buffer_init(&tkeyoutbuf, tkeyoutdata, sizeof(tkeyoutdata));
816 result = dns_rdata_fromstruct(&rdata, tkeyout.common.rdclass,
817 tkeyout.common.rdtype, &tkeyout,
821 dns_rdata_freestruct(&tkeyin);
822 freetkeyin = ISC_FALSE;
825 if (tkeyout.key != NULL)
826 isc_mem_put(tkeyout.mctx, tkeyout.key, tkeyout.keylen);
827 if (tkeyout.other != NULL)
828 isc_mem_put(tkeyout.mctx, tkeyout.other, tkeyout.otherlen);
829 if (result != ISC_R_SUCCESS)
832 RETERR(add_rdata_to_list(msg, keyname, &rdata, 0, &namelist));
834 RETERR(dns_message_reply(msg, ISC_TRUE));
836 name = ISC_LIST_HEAD(namelist);
837 while (name != NULL) {
838 dns_name_t *next = ISC_LIST_NEXT(name, link);
839 ISC_LIST_UNLINK(namelist, name, link);
840 dns_message_addname(msg, name, DNS_SECTION_ANSWER);
844 return (ISC_R_SUCCESS);
848 dns_rdata_freestruct(&tkeyin);
849 if (!ISC_LIST_EMPTY(namelist))
850 free_namelist(msg, &namelist);
855 buildquery(dns_message_t *msg, dns_name_t *name,
856 dns_rdata_tkey_t *tkey, isc_boolean_t win2k)
858 dns_name_t *qname = NULL, *aname = NULL;
859 dns_rdataset_t *question = NULL, *tkeyset = NULL;
860 dns_rdatalist_t *tkeylist = NULL;
861 dns_rdata_t *rdata = NULL;
862 isc_buffer_t *dynbuf = NULL;
865 REQUIRE(msg != NULL);
866 REQUIRE(name != NULL);
867 REQUIRE(tkey != NULL);
869 RETERR(dns_message_gettempname(msg, &qname));
870 RETERR(dns_message_gettempname(msg, &aname));
872 RETERR(dns_message_gettemprdataset(msg, &question));
873 dns_rdataset_init(question);
874 dns_rdataset_makequestion(question, dns_rdataclass_any,
877 RETERR(isc_buffer_allocate(msg->mctx, &dynbuf, 4096));
878 RETERR(dns_message_gettemprdata(msg, &rdata));
880 RETERR(dns_rdata_fromstruct(rdata, dns_rdataclass_any,
881 dns_rdatatype_tkey, tkey, dynbuf));
882 dns_message_takebuffer(msg, &dynbuf);
884 RETERR(dns_message_gettemprdatalist(msg, &tkeylist));
885 tkeylist->rdclass = dns_rdataclass_any;
886 tkeylist->type = dns_rdatatype_tkey;
887 tkeylist->covers = 0;
889 ISC_LIST_INIT(tkeylist->rdata);
890 ISC_LIST_APPEND(tkeylist->rdata, rdata, link);
892 RETERR(dns_message_gettemprdataset(msg, &tkeyset));
893 dns_rdataset_init(tkeyset);
894 RETERR(dns_rdatalist_tordataset(tkeylist, tkeyset));
896 dns_name_init(qname, NULL);
897 dns_name_clone(name, qname);
899 dns_name_init(aname, NULL);
900 dns_name_clone(name, aname);
902 ISC_LIST_APPEND(qname->list, question, link);
903 ISC_LIST_APPEND(aname->list, tkeyset, link);
905 dns_message_addname(msg, qname, DNS_SECTION_QUESTION);
908 * Windows 2000 needs this in the answer section, not the additional
909 * section where the RFC specifies.
912 dns_message_addname(msg, aname, DNS_SECTION_ANSWER);
914 dns_message_addname(msg, aname, DNS_SECTION_ADDITIONAL);
916 return (ISC_R_SUCCESS);
920 dns_message_puttempname(msg, &qname);
922 dns_message_puttempname(msg, &aname);
923 if (question != NULL) {
924 dns_rdataset_disassociate(question);
925 dns_message_puttemprdataset(msg, &question);
928 isc_buffer_free(&dynbuf);
929 printf("buildquery error\n");
934 dns_tkey_builddhquery(dns_message_t *msg, dst_key_t *key, dns_name_t *name,
935 dns_name_t *algorithm, isc_buffer_t *nonce,
936 isc_uint32_t lifetime)
938 dns_rdata_tkey_t tkey;
939 dns_rdata_t *rdata = NULL;
940 isc_buffer_t *dynbuf = NULL;
943 dns_namelist_t namelist;
947 REQUIRE(msg != NULL);
948 REQUIRE(key != NULL);
949 REQUIRE(dst_key_alg(key) == DNS_KEYALG_DH);
950 REQUIRE(dst_key_isprivate(key));
951 REQUIRE(name != NULL);
952 REQUIRE(algorithm != NULL);
954 tkey.common.rdclass = dns_rdataclass_any;
955 tkey.common.rdtype = dns_rdatatype_tkey;
956 ISC_LINK_INIT(&tkey.common, link);
957 tkey.mctx = msg->mctx;
958 dns_name_init(&tkey.algorithm, NULL);
959 dns_name_clone(algorithm, &tkey.algorithm);
960 isc_stdtime_get(&now);
961 tkey.inception = now;
962 tkey.expire = now + lifetime;
963 tkey.mode = DNS_TKEYMODE_DIFFIEHELLMAN;
965 isc_buffer_usedregion(nonce, &r);
967 r.base = isc_mem_get(msg->mctx, 0);
972 tkey.keylen = r.length;
976 RETERR(buildquery(msg, name, &tkey, ISC_FALSE));
979 isc_mem_put(msg->mctx, r.base, 0);
981 RETERR(dns_message_gettemprdata(msg, &rdata));
982 RETERR(isc_buffer_allocate(msg->mctx, &dynbuf, 1024));
983 RETERR(dst_key_todns(key, dynbuf));
984 isc_buffer_usedregion(dynbuf, &r);
985 dns_rdata_fromregion(rdata, dns_rdataclass_any,
986 dns_rdatatype_key, &r);
987 dns_message_takebuffer(msg, &dynbuf);
989 dns_name_init(&keyname, NULL);
990 dns_name_clone(dst_key_name(key), &keyname);
992 ISC_LIST_INIT(namelist);
993 RETERR(add_rdata_to_list(msg, &keyname, rdata, 0, &namelist));
994 dns_message_addname(msg, ISC_LIST_HEAD(namelist),
995 DNS_SECTION_ADDITIONAL);
997 return (ISC_R_SUCCESS);
1002 isc_buffer_free(&dynbuf);
1007 dns_tkey_buildgssquery(dns_message_t *msg, dns_name_t *name, dns_name_t *gname,
1008 isc_buffer_t *intoken, isc_uint32_t lifetime,
1009 gss_ctx_id_t *context, isc_boolean_t win2k,
1010 isc_mem_t *mctx, char **err_message)
1012 dns_rdata_tkey_t tkey;
1013 isc_result_t result;
1016 unsigned char array[4096];
1020 REQUIRE(msg != NULL);
1021 REQUIRE(name != NULL);
1022 REQUIRE(gname != NULL);
1023 REQUIRE(context != NULL);
1024 REQUIRE(mctx != NULL);
1026 isc_buffer_init(&token, array, sizeof(array));
1027 result = dst_gssapi_initctx(gname, NULL, &token, context,
1029 if (result != DNS_R_CONTINUE && result != ISC_R_SUCCESS)
1032 tkey.common.rdclass = dns_rdataclass_any;
1033 tkey.common.rdtype = dns_rdatatype_tkey;
1034 ISC_LINK_INIT(&tkey.common, link);
1036 dns_name_init(&tkey.algorithm, NULL);
1039 dns_name_clone(DNS_TSIG_GSSAPIMS_NAME, &tkey.algorithm);
1041 dns_name_clone(DNS_TSIG_GSSAPI_NAME, &tkey.algorithm);
1043 isc_stdtime_get(&now);
1044 tkey.inception = now;
1045 tkey.expire = now + lifetime;
1046 tkey.mode = DNS_TKEYMODE_GSSAPI;
1048 tkey.key = isc_buffer_base(&token);
1049 tkey.keylen = isc_buffer_usedlength(&token);
1053 RETERR(buildquery(msg, name, &tkey, win2k));
1055 return (ISC_R_SUCCESS);
1062 dns_tkey_builddeletequery(dns_message_t *msg, dns_tsigkey_t *key) {
1063 dns_rdata_tkey_t tkey;
1065 REQUIRE(msg != NULL);
1066 REQUIRE(key != NULL);
1068 tkey.common.rdclass = dns_rdataclass_any;
1069 tkey.common.rdtype = dns_rdatatype_tkey;
1070 ISC_LINK_INIT(&tkey.common, link);
1071 tkey.mctx = msg->mctx;
1072 dns_name_init(&tkey.algorithm, NULL);
1073 dns_name_clone(key->algorithm, &tkey.algorithm);
1074 tkey.inception = tkey.expire = 0;
1075 tkey.mode = DNS_TKEYMODE_DELETE;
1077 tkey.keylen = tkey.otherlen = 0;
1078 tkey.key = tkey.other = NULL;
1080 return (buildquery(msg, &key->name, &tkey, ISC_FALSE));
1084 find_tkey(dns_message_t *msg, dns_name_t **name, dns_rdata_t *rdata,
1087 dns_rdataset_t *tkeyset;
1088 isc_result_t result;
1090 result = dns_message_firstname(msg, section);
1091 while (result == ISC_R_SUCCESS) {
1093 dns_message_currentname(msg, section, name);
1095 result = dns_message_findtype(*name, dns_rdatatype_tkey, 0,
1097 if (result == ISC_R_SUCCESS) {
1098 result = dns_rdataset_first(tkeyset);
1099 if (result != ISC_R_SUCCESS)
1101 dns_rdataset_current(tkeyset, rdata);
1102 return (ISC_R_SUCCESS);
1104 result = dns_message_nextname(msg, section);
1106 if (result == ISC_R_NOMORE)
1107 return (ISC_R_NOTFOUND);
1112 dns_tkey_processdhresponse(dns_message_t *qmsg, dns_message_t *rmsg,
1113 dst_key_t *key, isc_buffer_t *nonce,
1114 dns_tsigkey_t **outkey, dns_tsig_keyring_t *ring)
1116 dns_rdata_t qtkeyrdata = DNS_RDATA_INIT, rtkeyrdata = DNS_RDATA_INIT;
1117 dns_name_t keyname, *tkeyname, *theirkeyname, *ourkeyname, *tempname;
1118 dns_rdataset_t *theirkeyset = NULL, *ourkeyset = NULL;
1119 dns_rdata_t theirkeyrdata = DNS_RDATA_INIT;
1120 dst_key_t *theirkey = NULL;
1121 dns_rdata_tkey_t qtkey, rtkey;
1122 unsigned char secretdata[256];
1123 unsigned int sharedsize;
1124 isc_buffer_t *shared = NULL, secret;
1126 isc_result_t result;
1127 isc_boolean_t freertkey = ISC_FALSE;
1129 REQUIRE(qmsg != NULL);
1130 REQUIRE(rmsg != NULL);
1131 REQUIRE(key != NULL);
1132 REQUIRE(dst_key_alg(key) == DNS_KEYALG_DH);
1133 REQUIRE(dst_key_isprivate(key));
1135 REQUIRE(*outkey == NULL);
1137 if (rmsg->rcode != dns_rcode_noerror)
1138 return (ISC_RESULTCLASS_DNSRCODE + rmsg->rcode);
1139 RETERR(find_tkey(rmsg, &tkeyname, &rtkeyrdata, DNS_SECTION_ANSWER));
1140 RETERR(dns_rdata_tostruct(&rtkeyrdata, &rtkey, NULL));
1141 freertkey = ISC_TRUE;
1143 RETERR(find_tkey(qmsg, &tempname, &qtkeyrdata,
1144 DNS_SECTION_ADDITIONAL));
1145 RETERR(dns_rdata_tostruct(&qtkeyrdata, &qtkey, NULL));
1147 if (rtkey.error != dns_rcode_noerror ||
1148 rtkey.mode != DNS_TKEYMODE_DIFFIEHELLMAN ||
1149 rtkey.mode != qtkey.mode ||
1150 !dns_name_equal(&rtkey.algorithm, &qtkey.algorithm) ||
1151 rmsg->rcode != dns_rcode_noerror) {
1152 tkey_log("dns_tkey_processdhresponse: tkey mode invalid "
1154 result = DNS_R_INVALIDTKEY;
1155 dns_rdata_freestruct(&qtkey);
1159 dns_rdata_freestruct(&qtkey);
1161 dns_name_init(&keyname, NULL);
1162 dns_name_clone(dst_key_name(key), &keyname);
1166 RETERR(dns_message_findname(rmsg, DNS_SECTION_ANSWER, &keyname,
1167 dns_rdatatype_key, 0, &ourkeyname,
1170 result = dns_message_firstname(rmsg, DNS_SECTION_ANSWER);
1171 while (result == ISC_R_SUCCESS) {
1172 theirkeyname = NULL;
1173 dns_message_currentname(rmsg, DNS_SECTION_ANSWER,
1175 if (dns_name_equal(theirkeyname, ourkeyname))
1178 result = dns_message_findtype(theirkeyname, dns_rdatatype_key,
1180 if (result == ISC_R_SUCCESS) {
1181 RETERR(dns_rdataset_first(theirkeyset));
1185 result = dns_message_nextname(rmsg, DNS_SECTION_ANSWER);
1188 if (theirkeyset == NULL) {
1189 tkey_log("dns_tkey_processdhresponse: failed to find server "
1191 result = ISC_R_NOTFOUND;
1195 dns_rdataset_current(theirkeyset, &theirkeyrdata);
1196 RETERR(dns_dnssec_keyfromrdata(theirkeyname, &theirkeyrdata,
1197 rmsg->mctx, &theirkey));
1199 RETERR(dst_key_secretsize(key, &sharedsize));
1200 RETERR(isc_buffer_allocate(rmsg->mctx, &shared, sharedsize));
1202 RETERR(dst_key_computesecret(theirkey, key, shared));
1204 isc_buffer_init(&secret, secretdata, sizeof(secretdata));
1207 r.length = rtkey.keylen;
1209 isc_buffer_usedregion(nonce, &r2);
1211 r2.base = isc_mem_get(rmsg->mctx, 0);
1214 RETERR(compute_secret(shared, &r2, &r, &secret));
1216 isc_mem_put(rmsg->mctx, r2.base, 0);
1218 isc_buffer_usedregion(&secret, &r);
1219 result = dns_tsigkey_create(tkeyname, &rtkey.algorithm,
1220 r.base, r.length, ISC_TRUE,
1221 NULL, rtkey.inception, rtkey.expire,
1222 rmsg->mctx, ring, outkey);
1223 isc_buffer_free(&shared);
1224 dns_rdata_freestruct(&rtkey);
1225 dst_key_free(&theirkey);
1230 isc_buffer_free(&shared);
1232 if (theirkey != NULL)
1233 dst_key_free(&theirkey);
1236 dns_rdata_freestruct(&rtkey);
1242 dns_tkey_processgssresponse(dns_message_t *qmsg, dns_message_t *rmsg,
1243 dns_name_t *gname, gss_ctx_id_t *context,
1244 isc_buffer_t *outtoken, dns_tsigkey_t **outkey,
1245 dns_tsig_keyring_t *ring, char **err_message)
1247 dns_rdata_t rtkeyrdata = DNS_RDATA_INIT, qtkeyrdata = DNS_RDATA_INIT;
1248 dns_name_t *tkeyname;
1249 dns_rdata_tkey_t rtkey, qtkey;
1250 dst_key_t *dstkey = NULL;
1251 isc_buffer_t intoken;
1252 isc_result_t result;
1253 unsigned char array[1024];
1255 REQUIRE(outtoken != NULL);
1256 REQUIRE(qmsg != NULL);
1257 REQUIRE(rmsg != NULL);
1258 REQUIRE(gname != NULL);
1259 REQUIRE(ring != NULL);
1261 REQUIRE(*outkey == NULL);
1263 if (rmsg->rcode != dns_rcode_noerror)
1264 return (ISC_RESULTCLASS_DNSRCODE + rmsg->rcode);
1265 RETERR(find_tkey(rmsg, &tkeyname, &rtkeyrdata, DNS_SECTION_ANSWER));
1266 RETERR(dns_rdata_tostruct(&rtkeyrdata, &rtkey, NULL));
1269 * Win2k puts the item in the ANSWER section, while the RFC
1270 * specifies it should be in the ADDITIONAL section. Check first
1271 * where it should be, and then where it may be.
1273 result = find_tkey(qmsg, &tkeyname, &qtkeyrdata,
1274 DNS_SECTION_ADDITIONAL);
1275 if (result == ISC_R_NOTFOUND)
1276 result = find_tkey(qmsg, &tkeyname, &qtkeyrdata,
1277 DNS_SECTION_ANSWER);
1278 if (result != ISC_R_SUCCESS)
1281 RETERR(dns_rdata_tostruct(&qtkeyrdata, &qtkey, NULL));
1283 if (rtkey.error != dns_rcode_noerror ||
1284 rtkey.mode != DNS_TKEYMODE_GSSAPI ||
1285 !dns_name_equal(&rtkey.algorithm, &qtkey.algorithm)) {
1286 tkey_log("dns_tkey_processgssresponse: tkey mode invalid "
1287 "or error set(2) %d", rtkey.error);
1288 _dns_tkey_dumpmessage(qmsg);
1289 _dns_tkey_dumpmessage(rmsg);
1290 result = DNS_R_INVALIDTKEY;
1294 isc_buffer_init(outtoken, array, sizeof(array));
1295 isc_buffer_init(&intoken, rtkey.key, rtkey.keylen);
1296 RETERR(dst_gssapi_initctx(gname, &intoken, outtoken, context,
1297 ring->mctx, err_message));
1299 RETERR(dst_key_fromgssapi(dns_rootname, *context, rmsg->mctx,
1302 RETERR(dns_tsigkey_createfromkey(tkeyname, DNS_TSIG_GSSAPI_NAME,
1303 dstkey, ISC_FALSE, NULL,
1304 rtkey.inception, rtkey.expire,
1305 ring->mctx, ring, outkey));
1306 dst_key_free(&dstkey);
1307 dns_rdata_freestruct(&rtkey);
1312 * XXXSRA This probably leaks memory from rtkey and qtkey.
1315 dst_key_free(&dstkey);
1320 dns_tkey_processdeleteresponse(dns_message_t *qmsg, dns_message_t *rmsg,
1321 dns_tsig_keyring_t *ring)
1323 dns_rdata_t qtkeyrdata = DNS_RDATA_INIT, rtkeyrdata = DNS_RDATA_INIT;
1324 dns_name_t *tkeyname, *tempname;
1325 dns_rdata_tkey_t qtkey, rtkey;
1326 dns_tsigkey_t *tsigkey = NULL;
1327 isc_result_t result;
1329 REQUIRE(qmsg != NULL);
1330 REQUIRE(rmsg != NULL);
1332 if (rmsg->rcode != dns_rcode_noerror)
1333 return(ISC_RESULTCLASS_DNSRCODE + rmsg->rcode);
1335 RETERR(find_tkey(rmsg, &tkeyname, &rtkeyrdata, DNS_SECTION_ANSWER));
1336 RETERR(dns_rdata_tostruct(&rtkeyrdata, &rtkey, NULL));
1338 RETERR(find_tkey(qmsg, &tempname, &qtkeyrdata,
1339 DNS_SECTION_ADDITIONAL));
1340 RETERR(dns_rdata_tostruct(&qtkeyrdata, &qtkey, NULL));
1342 if (rtkey.error != dns_rcode_noerror ||
1343 rtkey.mode != DNS_TKEYMODE_DELETE ||
1344 rtkey.mode != qtkey.mode ||
1345 !dns_name_equal(&rtkey.algorithm, &qtkey.algorithm) ||
1346 rmsg->rcode != dns_rcode_noerror) {
1347 tkey_log("dns_tkey_processdeleteresponse: tkey mode invalid "
1349 result = DNS_R_INVALIDTKEY;
1350 dns_rdata_freestruct(&qtkey);
1351 dns_rdata_freestruct(&rtkey);
1355 dns_rdata_freestruct(&qtkey);
1357 RETERR(dns_tsigkey_find(&tsigkey, tkeyname, &rtkey.algorithm, ring));
1359 dns_rdata_freestruct(&rtkey);
1362 * Mark the key as deleted.
1364 dns_tsigkey_setdeleted(tsigkey);
1366 * Release the reference.
1368 dns_tsigkey_detach(&tsigkey);
1375 dns_tkey_gssnegotiate(dns_message_t *qmsg, dns_message_t *rmsg,
1376 dns_name_t *server, gss_ctx_id_t *context,
1377 dns_tsigkey_t **outkey, dns_tsig_keyring_t *ring,
1378 isc_boolean_t win2k, char **err_message)
1380 dns_rdata_t rtkeyrdata = DNS_RDATA_INIT, qtkeyrdata = DNS_RDATA_INIT;
1381 dns_name_t *tkeyname;
1382 dns_rdata_tkey_t rtkey, qtkey;
1383 isc_buffer_t intoken, outtoken;
1384 dst_key_t *dstkey = NULL;
1385 isc_result_t result;
1386 unsigned char array[1024];
1388 REQUIRE(qmsg != NULL);
1389 REQUIRE(rmsg != NULL);
1390 REQUIRE(server != NULL);
1392 REQUIRE(*outkey == NULL);
1394 if (rmsg->rcode != dns_rcode_noerror)
1395 return (ISC_RESULTCLASS_DNSRCODE + rmsg->rcode);
1397 RETERR(find_tkey(rmsg, &tkeyname, &rtkeyrdata, DNS_SECTION_ANSWER));
1398 RETERR(dns_rdata_tostruct(&rtkeyrdata, &rtkey, NULL));
1400 if (win2k == ISC_TRUE)
1401 RETERR(find_tkey(qmsg, &tkeyname, &qtkeyrdata,
1402 DNS_SECTION_ANSWER));
1404 RETERR(find_tkey(qmsg, &tkeyname, &qtkeyrdata,
1405 DNS_SECTION_ADDITIONAL));
1407 RETERR(dns_rdata_tostruct(&qtkeyrdata, &qtkey, NULL));
1409 if (rtkey.error != dns_rcode_noerror ||
1410 rtkey.mode != DNS_TKEYMODE_GSSAPI ||
1411 !dns_name_equal(&rtkey.algorithm, &qtkey.algorithm))
1413 tkey_log("dns_tkey_processdhresponse: tkey mode invalid "
1415 result = DNS_R_INVALIDTKEY;
1419 isc_buffer_init(&intoken, rtkey.key, rtkey.keylen);
1420 isc_buffer_init(&outtoken, array, sizeof(array));
1422 result = dst_gssapi_initctx(server, &intoken, &outtoken, context,
1423 ring->mctx, err_message);
1424 if (result != DNS_R_CONTINUE && result != ISC_R_SUCCESS)
1427 RETERR(dst_key_fromgssapi(dns_rootname, *context, rmsg->mctx,
1431 * XXXSRA This seems confused. If we got CONTINUE from initctx,
1432 * the GSS negotiation hasn't completed yet, so we can't sign
1436 RETERR(dns_tsigkey_createfromkey(tkeyname,
1438 ? DNS_TSIG_GSSAPIMS_NAME
1439 : DNS_TSIG_GSSAPI_NAME),
1440 dstkey, ISC_TRUE, NULL,
1441 rtkey.inception, rtkey.expire,
1442 ring->mctx, ring, outkey));
1443 dst_key_free(&dstkey);
1444 dns_rdata_freestruct(&rtkey);
1449 * XXXSRA This probably leaks memory from qtkey.
1451 dns_rdata_freestruct(&rtkey);
1453 dst_key_free(&dstkey);