Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 :
4 : dcerpc schannel operations
5 :
6 : Copyright (C) Andrew Tridgell 2004
7 : Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
8 :
9 : This program is free software; you can redistribute it and/or modify
10 : it under the terms of the GNU General Public License as published by
11 : the Free Software Foundation; either version 3 of the License, or
12 : (at your option) any later version.
13 :
14 : This program is distributed in the hope that it will be useful,
15 : but WITHOUT ANY WARRANTY; without even the implied warranty of
16 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 : GNU General Public License for more details.
18 :
19 : You should have received a copy of the GNU General Public License
20 : along with this program. If not, see <http://www.gnu.org/licenses/>.
21 : */
22 :
23 : #include "includes.h"
24 : #include <tevent.h>
25 : #include "lib/util/tevent_ntstatus.h"
26 : #include "librpc/gen_ndr/ndr_schannel.h"
27 : #include "auth/auth.h"
28 : #include "auth/credentials/credentials.h"
29 : #include "auth/gensec/gensec.h"
30 : #include "auth/gensec/gensec_internal.h"
31 : #include "auth/gensec/gensec_proto.h"
32 : #include "../libcli/auth/schannel.h"
33 : #include "librpc/gen_ndr/dcerpc.h"
34 : #include "param/param.h"
35 : #include "auth/gensec/gensec_toplevel_proto.h"
36 : #include "libds/common/roles.h"
37 :
38 : #include "lib/crypto/gnutls_helpers.h"
39 : #include <gnutls/gnutls.h>
40 : #include <gnutls/crypto.h>
41 :
42 : #undef DBGC_CLASS
43 : #define DBGC_CLASS DBGC_AUTH
44 :
45 : struct schannel_state {
46 : struct gensec_security *gensec;
47 : uint64_t seq_num;
48 : bool initiator;
49 : struct netlogon_creds_CredentialState *creds;
50 : struct auth_user_info_dc *user_info_dc;
51 : };
52 :
53 : #define SETUP_SEQNUM(state, buf, initiator) do { \
54 : uint8_t *_buf = buf; \
55 : uint32_t _seq_num_low = (state)->seq_num & UINT32_MAX; \
56 : uint32_t _seq_num_high = (state)->seq_num >> 32; \
57 : if (initiator) { \
58 : _seq_num_high |= 0x80000000; \
59 : } \
60 : RSIVAL(_buf, 0, _seq_num_low); \
61 : RSIVAL(_buf, 4, _seq_num_high); \
62 : } while(0)
63 :
64 4818 : static struct schannel_state *netsec_create_state(
65 : struct gensec_security *gensec,
66 : struct netlogon_creds_CredentialState *creds,
67 : bool initiator)
68 : {
69 640 : struct schannel_state *state;
70 :
71 4818 : state = talloc_zero(gensec, struct schannel_state);
72 4818 : if (state == NULL) {
73 0 : return NULL;
74 : }
75 :
76 4818 : state->gensec = gensec;
77 4818 : state->initiator = initiator;
78 4818 : state->creds = netlogon_creds_copy(state, creds);
79 4818 : if (state->creds == NULL) {
80 0 : talloc_free(state);
81 0 : return NULL;
82 : }
83 :
84 4818 : gensec->private_data = state;
85 :
86 4818 : return state;
87 : }
88 :
89 146590 : static void netsec_offset_and_sizes(struct schannel_state *state,
90 : bool do_seal,
91 : uint32_t *_min_sig_size,
92 : uint32_t *_used_sig_size,
93 : uint32_t *_checksum_length,
94 : uint32_t *_confounder_ofs)
95 : {
96 16044 : uint32_t min_sig_size;
97 16044 : uint32_t used_sig_size;
98 16044 : uint32_t checksum_length;
99 16044 : uint32_t confounder_ofs;
100 :
101 146590 : if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
102 68590 : min_sig_size = 48;
103 68590 : used_sig_size = 56;
104 : /*
105 : * Note: windows has a bug here and uses the old values...
106 : *
107 : * checksum_length = 32;
108 : * confounder_ofs = 48;
109 : */
110 68590 : checksum_length = 8;
111 68590 : confounder_ofs = 24;
112 : } else {
113 67260 : min_sig_size = 24;
114 67260 : used_sig_size = 32;
115 67260 : checksum_length = 8;
116 67260 : confounder_ofs = 24;
117 : }
118 :
119 135894 : if (do_seal) {
120 110108 : min_sig_size += 8;
121 : }
122 :
123 146590 : if (_min_sig_size) {
124 97706 : *_min_sig_size = min_sig_size;
125 : }
126 :
127 146590 : if (_used_sig_size) {
128 97768 : *_used_sig_size = used_sig_size;
129 : }
130 :
131 146590 : if (_checksum_length) {
132 97706 : *_checksum_length = checksum_length;
133 : }
134 :
135 146590 : if (_confounder_ofs) {
136 97706 : *_confounder_ofs = confounder_ofs;
137 : }
138 130546 : }
139 :
140 : /*******************************************************************
141 : Encode or Decode the sequence number (which is symmetric)
142 : ********************************************************************/
143 97706 : static NTSTATUS netsec_do_seq_num(struct schannel_state *state,
144 : const uint8_t *checksum,
145 : uint32_t checksum_length,
146 : uint8_t seq_num[8])
147 : {
148 97706 : if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
149 52880 : gnutls_cipher_hd_t cipher_hnd = NULL;
150 52880 : gnutls_datum_t key = {
151 52880 : .data = state->creds->session_key,
152 : .size = sizeof(state->creds->session_key),
153 : };
154 7160 : uint32_t iv_size =
155 52880 : gnutls_cipher_get_iv_size(GNUTLS_CIPHER_AES_128_CFB8);
156 52880 : uint8_t _iv[iv_size];
157 52880 : gnutls_datum_t iv = {
158 : .data = _iv,
159 : .size = iv_size,
160 : };
161 7160 : int rc;
162 :
163 52880 : ZERO_ARRAY(_iv);
164 :
165 52880 : memcpy(iv.data + 0, checksum, 8);
166 52880 : memcpy(iv.data + 8, checksum, 8);
167 :
168 52880 : rc = gnutls_cipher_init(&cipher_hnd,
169 : GNUTLS_CIPHER_AES_128_CFB8,
170 : &key,
171 : &iv);
172 52880 : if (rc < 0) {
173 0 : return gnutls_error_to_ntstatus(rc,
174 : NT_STATUS_CRYPTO_SYSTEM_INVALID);
175 : }
176 :
177 52880 : rc = gnutls_cipher_encrypt(cipher_hnd, seq_num, 8);
178 52880 : gnutls_cipher_deinit(cipher_hnd);
179 52880 : if (rc < 0) {
180 0 : return gnutls_error_to_ntstatus(rc,
181 : NT_STATUS_CRYPTO_SYSTEM_INVALID);
182 : }
183 :
184 : } else {
185 3536 : static const uint8_t zeros[4];
186 3536 : uint8_t _sequence_key[16];
187 3536 : gnutls_cipher_hd_t cipher_hnd;
188 44826 : gnutls_datum_t sequence_key = {
189 : .data = _sequence_key,
190 : .size = sizeof(_sequence_key),
191 : };
192 3536 : uint8_t digest1[16];
193 3536 : int rc;
194 :
195 48362 : rc = gnutls_hmac_fast(GNUTLS_MAC_MD5,
196 44826 : state->creds->session_key,
197 : sizeof(state->creds->session_key),
198 : zeros,
199 : sizeof(zeros),
200 : digest1);
201 44826 : if (rc < 0) {
202 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
203 : }
204 :
205 44826 : rc = gnutls_hmac_fast(GNUTLS_MAC_MD5,
206 : digest1,
207 : sizeof(digest1),
208 : checksum,
209 : checksum_length,
210 : _sequence_key);
211 44826 : if (rc < 0) {
212 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
213 : }
214 :
215 44826 : ZERO_ARRAY(digest1);
216 :
217 44826 : rc = gnutls_cipher_init(&cipher_hnd,
218 : GNUTLS_CIPHER_ARCFOUR_128,
219 : &sequence_key,
220 : NULL);
221 44826 : if (rc < 0) {
222 0 : ZERO_ARRAY(_sequence_key);
223 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
224 : }
225 :
226 44826 : rc = gnutls_cipher_encrypt(cipher_hnd,
227 : seq_num,
228 : 8);
229 44826 : gnutls_cipher_deinit(cipher_hnd);
230 44826 : ZERO_ARRAY(_sequence_key);
231 44826 : if (rc < 0) {
232 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
233 : }
234 : }
235 :
236 97706 : state->seq_num++;
237 :
238 97706 : return NT_STATUS_OK;
239 : }
240 :
241 69432 : static NTSTATUS netsec_do_seal(struct schannel_state *state,
242 : const uint8_t seq_num[8],
243 : uint8_t confounder[8],
244 : uint8_t *data, uint32_t length,
245 : bool forward)
246 : {
247 69432 : if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
248 33684 : gnutls_cipher_hd_t cipher_hnd = NULL;
249 33684 : uint8_t sess_kf0[16] = {0};
250 33684 : gnutls_datum_t key = {
251 : .data = sess_kf0,
252 : .size = sizeof(sess_kf0),
253 : };
254 3756 : uint32_t iv_size =
255 33684 : gnutls_cipher_get_iv_size(GNUTLS_CIPHER_AES_128_CFB8);
256 33684 : uint8_t _iv[iv_size];
257 33684 : gnutls_datum_t iv = {
258 : .data = _iv,
259 : .size = iv_size,
260 : };
261 3756 : uint32_t i;
262 3756 : int rc;
263 :
264 572628 : for (i = 0; i < key.size; i++) {
265 538944 : key.data[i] = state->creds->session_key[i] ^ 0xf0;
266 : }
267 :
268 33684 : ZERO_ARRAY(_iv);
269 :
270 33684 : memcpy(iv.data + 0, seq_num, 8);
271 33684 : memcpy(iv.data + 8, seq_num, 8);
272 :
273 33684 : rc = gnutls_cipher_init(&cipher_hnd,
274 : GNUTLS_CIPHER_AES_128_CFB8,
275 : &key,
276 : &iv);
277 33684 : if (rc < 0) {
278 0 : DBG_ERR("ERROR: gnutls_cipher_init: %s\n",
279 : gnutls_strerror(rc));
280 0 : return NT_STATUS_NO_MEMORY;
281 : }
282 :
283 33684 : if (forward) {
284 16840 : rc = gnutls_cipher_encrypt(cipher_hnd,
285 : confounder,
286 : 8);
287 16840 : if (rc < 0) {
288 0 : gnutls_cipher_deinit(cipher_hnd);
289 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
290 : }
291 :
292 16840 : rc = gnutls_cipher_encrypt(cipher_hnd,
293 : data,
294 : length);
295 16840 : if (rc < 0) {
296 0 : gnutls_cipher_deinit(cipher_hnd);
297 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
298 : }
299 : } else {
300 :
301 : /*
302 : * Workaround bug present in gnutls 3.6.8:
303 : *
304 : * gnutls_cipher_decrypt() uses an optimization
305 : * internally that breaks decryption when processing
306 : * buffers with their length not being a multiple
307 : * of the blocksize.
308 : */
309 :
310 16844 : uint8_t tmp[16] = { 0, };
311 16844 : uint32_t tmp_dlength = MIN(length, sizeof(tmp) - 8);
312 :
313 16844 : memcpy(tmp, confounder, 8);
314 16844 : memcpy(tmp + 8, data, tmp_dlength);
315 :
316 18722 : rc = gnutls_cipher_decrypt(cipher_hnd,
317 : tmp,
318 16844 : 8 + tmp_dlength);
319 16844 : if (rc < 0) {
320 0 : ZERO_STRUCT(tmp);
321 0 : gnutls_cipher_deinit(cipher_hnd);
322 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
323 : }
324 :
325 16844 : memcpy(confounder, tmp, 8);
326 16844 : memcpy(data, tmp + 8, tmp_dlength);
327 16844 : ZERO_STRUCT(tmp);
328 :
329 16844 : if (length > tmp_dlength) {
330 18712 : rc = gnutls_cipher_decrypt(cipher_hnd,
331 16839 : data + tmp_dlength,
332 16839 : length - tmp_dlength);
333 16839 : if (rc < 0) {
334 0 : gnutls_cipher_deinit(cipher_hnd);
335 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
336 : }
337 : }
338 : }
339 33684 : gnutls_cipher_deinit(cipher_hnd);
340 : } else {
341 1924 : gnutls_cipher_hd_t cipher_hnd;
342 1924 : uint8_t _sealing_key[16];
343 35748 : gnutls_datum_t sealing_key = {
344 : .data = _sealing_key,
345 : .size = sizeof(_sealing_key),
346 : };
347 1924 : static const uint8_t zeros[4];
348 1924 : uint8_t digest2[16];
349 1924 : uint8_t sess_kf0[16];
350 1924 : int rc;
351 1924 : int i;
352 :
353 607716 : for (i = 0; i < 16; i++) {
354 571968 : sess_kf0[i] = state->creds->session_key[i] ^ 0xf0;
355 : }
356 :
357 35748 : rc = gnutls_hmac_fast(GNUTLS_MAC_MD5,
358 : sess_kf0,
359 : sizeof(sess_kf0),
360 : zeros,
361 : 4,
362 : digest2);
363 35748 : if (rc < 0) {
364 0 : ZERO_ARRAY(digest2);
365 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
366 : }
367 :
368 35748 : rc = gnutls_hmac_fast(GNUTLS_MAC_MD5,
369 : digest2,
370 : sizeof(digest2),
371 : seq_num,
372 : 8,
373 : _sealing_key);
374 :
375 35748 : ZERO_ARRAY(digest2);
376 35748 : if (rc < 0) {
377 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
378 : }
379 :
380 35748 : rc = gnutls_cipher_init(&cipher_hnd,
381 : GNUTLS_CIPHER_ARCFOUR_128,
382 : &sealing_key,
383 : NULL);
384 35748 : if (rc < 0) {
385 0 : ZERO_ARRAY(_sealing_key);
386 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
387 : }
388 35748 : rc = gnutls_cipher_encrypt(cipher_hnd,
389 : confounder,
390 : 8);
391 35748 : if (rc < 0) {
392 0 : ZERO_ARRAY(_sealing_key);
393 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
394 : }
395 35748 : gnutls_cipher_deinit(cipher_hnd);
396 35748 : rc = gnutls_cipher_init(&cipher_hnd,
397 : GNUTLS_CIPHER_ARCFOUR_128,
398 : &sealing_key,
399 : NULL);
400 35748 : if (rc < 0) {
401 0 : ZERO_ARRAY(_sealing_key);
402 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
403 : }
404 35748 : rc = gnutls_cipher_encrypt(cipher_hnd,
405 : data,
406 : length);
407 35748 : gnutls_cipher_deinit(cipher_hnd);
408 35748 : ZERO_ARRAY(_sealing_key);
409 35748 : if (rc < 0) {
410 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_CRYPTO_SYSTEM_INVALID);
411 : }
412 : }
413 :
414 69432 : return NT_STATUS_OK;
415 : }
416 :
417 : /*******************************************************************
418 : Create a digest over the entire packet (including the data), and
419 : MD5 it with the session key.
420 : ********************************************************************/
421 97706 : static NTSTATUS netsec_do_sign(struct schannel_state *state,
422 : const uint8_t *confounder,
423 : const uint8_t *data, size_t length,
424 : uint8_t header[8],
425 : uint8_t *checksum)
426 : {
427 97706 : if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
428 52880 : gnutls_hmac_hd_t hmac_hnd = NULL;
429 7160 : int rc;
430 :
431 60040 : rc = gnutls_hmac_init(&hmac_hnd,
432 : GNUTLS_MAC_SHA256,
433 52880 : state->creds->session_key,
434 : sizeof(state->creds->session_key));
435 52880 : if (rc < 0) {
436 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
437 : }
438 :
439 52880 : if (confounder) {
440 33664 : SSVAL(header, 0, NL_SIGN_HMAC_SHA256);
441 33664 : SSVAL(header, 2, NL_SEAL_AES128);
442 33664 : SSVAL(header, 4, 0xFFFF);
443 33664 : SSVAL(header, 6, 0x0000);
444 :
445 33664 : rc = gnutls_hmac(hmac_hnd, header, 8);
446 33664 : if (rc < 0) {
447 0 : gnutls_hmac_deinit(hmac_hnd, NULL);
448 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
449 : }
450 33664 : rc = gnutls_hmac(hmac_hnd, confounder, 8);
451 33664 : if (rc < 0) {
452 0 : gnutls_hmac_deinit(hmac_hnd, NULL);
453 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
454 : }
455 : } else {
456 19216 : SSVAL(header, 0, NL_SIGN_HMAC_SHA256);
457 19216 : SSVAL(header, 2, NL_SEAL_NONE);
458 19216 : SSVAL(header, 4, 0xFFFF);
459 19216 : SSVAL(header, 6, 0x0000);
460 :
461 19216 : rc = gnutls_hmac(hmac_hnd, header, 8);
462 19216 : if (rc < 0) {
463 0 : gnutls_hmac_deinit(hmac_hnd, NULL);
464 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
465 : }
466 : }
467 :
468 52880 : rc = gnutls_hmac(hmac_hnd, data, length);
469 52880 : if (rc < 0) {
470 0 : gnutls_hmac_deinit(hmac_hnd, NULL);
471 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
472 : }
473 :
474 52880 : gnutls_hmac_deinit(hmac_hnd, checksum);
475 : } else {
476 3536 : uint8_t packet_digest[16];
477 3536 : static const uint8_t zeros[4];
478 44826 : gnutls_hash_hd_t hash_hnd = NULL;
479 3536 : int rc;
480 :
481 44826 : rc = gnutls_hash_init(&hash_hnd, GNUTLS_DIG_MD5);
482 44826 : if (rc < 0) {
483 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
484 : }
485 :
486 44826 : rc = gnutls_hash(hash_hnd, zeros, sizeof(zeros));
487 44826 : if (rc < 0) {
488 0 : gnutls_hash_deinit(hash_hnd, NULL);
489 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
490 : }
491 44826 : if (confounder) {
492 35728 : SSVAL(header, 0, NL_SIGN_HMAC_MD5);
493 35728 : SSVAL(header, 2, NL_SEAL_RC4);
494 35728 : SSVAL(header, 4, 0xFFFF);
495 35728 : SSVAL(header, 6, 0x0000);
496 :
497 35728 : rc = gnutls_hash(hash_hnd, header, 8);
498 35728 : if (rc < 0) {
499 0 : gnutls_hash_deinit(hash_hnd, NULL);
500 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
501 : }
502 35728 : rc = gnutls_hash(hash_hnd, confounder, 8);
503 35728 : if (rc < 0) {
504 0 : gnutls_hash_deinit(hash_hnd, NULL);
505 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
506 : }
507 : } else {
508 9098 : SSVAL(header, 0, NL_SIGN_HMAC_MD5);
509 9098 : SSVAL(header, 2, NL_SEAL_NONE);
510 9098 : SSVAL(header, 4, 0xFFFF);
511 9098 : SSVAL(header, 6, 0x0000);
512 :
513 9098 : rc = gnutls_hash(hash_hnd, header, 8);
514 9098 : if (rc < 0) {
515 0 : gnutls_hash_deinit(hash_hnd, NULL);
516 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
517 : }
518 : }
519 44826 : rc = gnutls_hash(hash_hnd, data, length);
520 44826 : if (rc < 0) {
521 0 : gnutls_hash_deinit(hash_hnd, NULL);
522 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
523 : }
524 44826 : gnutls_hash_deinit(hash_hnd, packet_digest);
525 :
526 48362 : rc = gnutls_hmac_fast(GNUTLS_MAC_MD5,
527 44826 : state->creds->session_key,
528 : sizeof(state->creds->session_key),
529 : packet_digest,
530 : sizeof(packet_digest),
531 : checksum);
532 44826 : ZERO_ARRAY(packet_digest);
533 44826 : if (rc < 0) {
534 0 : return gnutls_error_to_ntstatus(rc, NT_STATUS_HMAC_NOT_SUPPORTED);
535 : }
536 : }
537 :
538 97706 : return NT_STATUS_OK;
539 : }
540 :
541 48822 : static NTSTATUS netsec_incoming_packet(struct schannel_state *state,
542 : bool do_unseal,
543 : uint8_t *data, size_t length,
544 : const uint8_t *whole_pdu, size_t pdu_length,
545 : const DATA_BLOB *sig)
546 : {
547 48822 : uint32_t min_sig_size = 0;
548 5348 : uint8_t header[8];
549 5348 : uint8_t checksum[32];
550 48822 : uint32_t checksum_length = sizeof(checksum_length);
551 5348 : uint8_t _confounder[8];
552 48822 : uint8_t *confounder = NULL;
553 48822 : uint32_t confounder_ofs = 0;
554 5348 : uint8_t seq_num[8];
555 5348 : bool ret;
556 48822 : const uint8_t *sign_data = NULL;
557 48822 : size_t sign_length = 0;
558 5348 : NTSTATUS status;
559 :
560 48822 : netsec_offset_and_sizes(state,
561 : do_unseal,
562 : &min_sig_size,
563 : NULL,
564 : &checksum_length,
565 : &confounder_ofs);
566 :
567 48822 : if (sig->length < min_sig_size) {
568 0 : return NT_STATUS_ACCESS_DENIED;
569 : }
570 :
571 48822 : if (do_unseal) {
572 34686 : confounder = _confounder;
573 34686 : memcpy(confounder, sig->data+confounder_ofs, 8);
574 : } else {
575 11608 : confounder = NULL;
576 : }
577 :
578 48822 : SETUP_SEQNUM(state, seq_num, !state->initiator);
579 :
580 48822 : if (do_unseal) {
581 34686 : status = netsec_do_seal(state,
582 : seq_num,
583 : confounder,
584 : data,
585 : length,
586 : false);
587 34686 : if (!NT_STATUS_IS_OK(status)) {
588 0 : DBG_WARNING("netsec_do_seal failed: %s\n", nt_errstr(status));
589 0 : return NT_STATUS_ACCESS_DENIED;
590 : }
591 : }
592 :
593 48822 : if (state->gensec->want_features & GENSEC_FEATURE_SIGN_PKT_HEADER) {
594 43264 : sign_data = whole_pdu;
595 43264 : sign_length = pdu_length;
596 : } else {
597 210 : sign_data = data;
598 210 : sign_length = length;
599 : }
600 :
601 48822 : status = netsec_do_sign(state,
602 : confounder,
603 : sign_data,
604 : sign_length,
605 : header,
606 : checksum);
607 48822 : if (!NT_STATUS_IS_OK(status)) {
608 0 : DBG_WARNING("netsec_do_sign failed: %s\n", nt_errstr(status));
609 0 : return NT_STATUS_ACCESS_DENIED;
610 : }
611 :
612 48822 : ret = mem_equal_const_time(checksum, sig->data+16, checksum_length);
613 48822 : if (!ret) {
614 0 : dump_data_pw("calc digest:", checksum, checksum_length);
615 0 : dump_data_pw("wire digest:", sig->data+16, checksum_length);
616 0 : return NT_STATUS_ACCESS_DENIED;
617 : }
618 :
619 48822 : status = netsec_do_seq_num(state, checksum, checksum_length, seq_num);
620 48822 : if (!NT_STATUS_IS_OK(status)) {
621 0 : DBG_WARNING("netsec_do_seq_num failed: %s\n",
622 : nt_errstr(status));
623 0 : return status;
624 : }
625 :
626 48822 : ZERO_ARRAY(checksum);
627 :
628 48822 : ret = mem_equal_const_time(seq_num, sig->data+8, 8);
629 48822 : if (!ret) {
630 0 : dump_data_pw("calc seq num:", seq_num, 8);
631 0 : dump_data_pw("wire seq num:", sig->data+8, 8);
632 0 : return NT_STATUS_ACCESS_DENIED;
633 : }
634 :
635 48822 : return NT_STATUS_OK;
636 : }
637 :
638 48884 : static uint32_t netsec_outgoing_sig_size(struct schannel_state *state)
639 : {
640 48884 : uint32_t sig_size = 0;
641 :
642 54232 : netsec_offset_and_sizes(state,
643 : true,
644 : NULL,
645 : &sig_size,
646 : NULL,
647 : NULL);
648 :
649 48884 : return sig_size;
650 : }
651 :
652 48884 : static NTSTATUS netsec_outgoing_packet(struct schannel_state *state,
653 : TALLOC_CTX *mem_ctx,
654 : bool do_seal,
655 : uint8_t *data, size_t length,
656 : const uint8_t *whole_pdu, size_t pdu_length,
657 : DATA_BLOB *sig)
658 : {
659 48884 : uint32_t min_sig_size = 0;
660 48884 : uint32_t used_sig_size = 0;
661 5348 : uint8_t header[8];
662 5348 : uint8_t checksum[32];
663 48884 : uint32_t checksum_length = sizeof(checksum_length);
664 5348 : uint8_t _confounder[8];
665 48884 : uint8_t *confounder = NULL;
666 48884 : uint32_t confounder_ofs = 0;
667 5348 : uint8_t seq_num[8];
668 48884 : const uint8_t *sign_data = NULL;
669 48884 : size_t sign_length = 0;
670 5348 : NTSTATUS status;
671 :
672 48884 : netsec_offset_and_sizes(state,
673 : do_seal,
674 : &min_sig_size,
675 : &used_sig_size,
676 : &checksum_length,
677 : &confounder_ofs);
678 :
679 48884 : SETUP_SEQNUM(state, seq_num, state->initiator);
680 :
681 48884 : if (do_seal) {
682 34706 : confounder = _confounder;
683 34706 : generate_random_buffer(confounder, 8);
684 : } else {
685 11650 : confounder = NULL;
686 : }
687 :
688 48884 : if (state->gensec->want_features & GENSEC_FEATURE_SIGN_PKT_HEADER) {
689 43326 : sign_data = whole_pdu;
690 43326 : sign_length = pdu_length;
691 : } else {
692 210 : sign_data = data;
693 210 : sign_length = length;
694 : }
695 :
696 48884 : status = netsec_do_sign(state,
697 : confounder,
698 : sign_data,
699 : sign_length,
700 : header,
701 : checksum);
702 48884 : if (!NT_STATUS_IS_OK(status)) {
703 0 : DBG_WARNING("netsec_do_sign failed: %s\n", nt_errstr(status));
704 0 : return NT_STATUS_ACCESS_DENIED;
705 : }
706 :
707 48884 : if (do_seal) {
708 34706 : status = netsec_do_seal(state,
709 : seq_num,
710 : confounder,
711 : data,
712 : length,
713 : true);
714 34706 : if (!NT_STATUS_IS_OK(status)) {
715 0 : DBG_WARNING("netsec_do_seal failed: %s\n",
716 : nt_errstr(status));
717 0 : return status;
718 : }
719 : }
720 :
721 48884 : status = netsec_do_seq_num(state, checksum, checksum_length, seq_num);
722 48884 : if (!NT_STATUS_IS_OK(status)) {
723 0 : DBG_WARNING("netsec_do_seq_num failed: %s\n",
724 : nt_errstr(status));
725 0 : return status;
726 : }
727 :
728 48884 : (*sig) = data_blob_talloc_zero(mem_ctx, used_sig_size);
729 :
730 48884 : memcpy(sig->data, header, 8);
731 48884 : memcpy(sig->data+8, seq_num, 8);
732 48884 : memcpy(sig->data+16, checksum, checksum_length);
733 :
734 48884 : if (confounder) {
735 34706 : memcpy(sig->data+confounder_ofs, confounder, 8);
736 : }
737 :
738 48884 : dump_data_pw("signature:", sig->data+ 0, 8);
739 48884 : dump_data_pw("seq_num :", sig->data+ 8, 8);
740 48884 : dump_data_pw("digest :", sig->data+16, checksum_length);
741 48884 : dump_data_pw("confound :", sig->data+confounder_ofs, 8);
742 :
743 48884 : return NT_STATUS_OK;
744 : }
745 :
746 : _PUBLIC_ NTSTATUS gensec_schannel_init(TALLOC_CTX *ctx);
747 :
748 48884 : static size_t schannel_sig_size(struct gensec_security *gensec_security, size_t data_size)
749 : {
750 5348 : struct schannel_state *state =
751 48884 : talloc_get_type_abort(gensec_security->private_data,
752 : struct schannel_state);
753 :
754 48884 : return netsec_outgoing_sig_size(state);
755 : }
756 :
757 : struct schannel_update_state {
758 : NTSTATUS status;
759 : DATA_BLOB out;
760 : };
761 :
762 : static NTSTATUS schannel_update_internal(struct gensec_security *gensec_security,
763 : TALLOC_CTX *out_mem_ctx,
764 : const DATA_BLOB in, DATA_BLOB *out);
765 :
766 7214 : static struct tevent_req *schannel_update_send(TALLOC_CTX *mem_ctx,
767 : struct tevent_context *ev,
768 : struct gensec_security *gensec_security,
769 : const DATA_BLOB in)
770 : {
771 960 : struct tevent_req *req;
772 7214 : struct schannel_update_state *state = NULL;
773 960 : NTSTATUS status;
774 :
775 7214 : req = tevent_req_create(mem_ctx, &state,
776 : struct schannel_update_state);
777 7214 : if (req == NULL) {
778 0 : return NULL;
779 : }
780 :
781 8174 : status = schannel_update_internal(gensec_security,
782 : state, in,
783 7214 : &state->out);
784 7214 : state->status = status;
785 7214 : if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
786 2396 : status = NT_STATUS_OK;
787 : }
788 7214 : if (tevent_req_nterror(req, status)) {
789 0 : return tevent_req_post(req, ev);
790 : }
791 :
792 7214 : tevent_req_done(req);
793 7214 : return tevent_req_post(req, ev);
794 : }
795 :
796 7214 : static NTSTATUS schannel_update_internal(struct gensec_security *gensec_security,
797 : TALLOC_CTX *out_mem_ctx,
798 : const DATA_BLOB in, DATA_BLOB *out)
799 : {
800 960 : struct schannel_state *state =
801 7214 : talloc_get_type(gensec_security->private_data,
802 : struct schannel_state);
803 960 : NTSTATUS status;
804 960 : enum ndr_err_code ndr_err;
805 7214 : struct NL_AUTH_MESSAGE bind_schannel = {
806 : .Flags = 0,
807 : };
808 960 : struct NL_AUTH_MESSAGE bind_schannel_ack;
809 960 : struct netlogon_creds_CredentialState *creds;
810 960 : const char *workstation;
811 960 : const char *domain;
812 :
813 7214 : *out = data_blob(NULL, 0);
814 :
815 7214 : if (gensec_security->dcerpc_auth_level < DCERPC_AUTH_LEVEL_INTEGRITY) {
816 0 : switch (gensec_security->gensec_role) {
817 0 : case GENSEC_CLIENT:
818 0 : return NT_STATUS_INVALID_PARAMETER_MIX;
819 0 : case GENSEC_SERVER:
820 0 : return NT_STATUS_INVALID_PARAMETER;
821 : }
822 0 : return NT_STATUS_INTERNAL_ERROR;
823 : }
824 :
825 7214 : switch (gensec_security->gensec_role) {
826 4792 : case GENSEC_CLIENT:
827 4792 : if (state != NULL) {
828 : /* we could parse the bind ack, but we don't know what it is yet */
829 2396 : return NT_STATUS_OK;
830 : }
831 :
832 2396 : creds = cli_credentials_get_netlogon_creds(gensec_security->credentials);
833 2396 : if (creds == NULL) {
834 0 : return NT_STATUS_INVALID_PARAMETER_MIX;
835 : }
836 :
837 2396 : state = netsec_create_state(gensec_security,
838 : creds, true /* initiator */);
839 2396 : if (state == NULL) {
840 0 : return NT_STATUS_NO_MEMORY;
841 : }
842 :
843 2396 : bind_schannel.MessageType = NL_NEGOTIATE_REQUEST;
844 :
845 2396 : bind_schannel.Flags = NL_FLAG_OEM_NETBIOS_DOMAIN_NAME |
846 : NL_FLAG_OEM_NETBIOS_COMPUTER_NAME;
847 2396 : bind_schannel.oem_netbios_domain.a = cli_credentials_get_domain(gensec_security->credentials);
848 2396 : bind_schannel.oem_netbios_computer.a = creds->computer_name;
849 :
850 2396 : if (creds->secure_channel_type == SEC_CHAN_DNS_DOMAIN) {
851 36 : bind_schannel.Flags |= NL_FLAG_UTF8_DNS_DOMAIN_NAME;
852 36 : bind_schannel.utf8_dns_domain.u = cli_credentials_get_realm(gensec_security->credentials);
853 :
854 36 : bind_schannel.Flags |= NL_FLAG_UTF8_NETBIOS_COMPUTER_NAME;
855 36 : bind_schannel.utf8_netbios_computer.u = creds->computer_name;
856 : }
857 :
858 2396 : ndr_err = ndr_push_struct_blob(out, out_mem_ctx, &bind_schannel,
859 : (ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
860 2396 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
861 0 : status = ndr_map_error2ntstatus(ndr_err);
862 0 : DEBUG(3, ("Could not create schannel bind: %s\n",
863 : nt_errstr(status)));
864 0 : return status;
865 : }
866 :
867 2396 : return NT_STATUS_MORE_PROCESSING_REQUIRED;
868 2422 : case GENSEC_SERVER:
869 :
870 2422 : if (state != NULL) {
871 : /* no third leg on this protocol */
872 0 : return NT_STATUS_INVALID_PARAMETER;
873 : }
874 :
875 : /* parse the schannel startup blob */
876 2422 : ndr_err = ndr_pull_struct_blob(&in, out_mem_ctx, &bind_schannel,
877 : (ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_MESSAGE);
878 2422 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
879 0 : status = ndr_map_error2ntstatus(ndr_err);
880 0 : DEBUG(3, ("Could not parse incoming schannel bind: %s\n",
881 : nt_errstr(status)));
882 0 : return status;
883 : }
884 :
885 2422 : if (bind_schannel.Flags & NL_FLAG_OEM_NETBIOS_DOMAIN_NAME) {
886 2422 : domain = bind_schannel.oem_netbios_domain.a;
887 2422 : if (strcasecmp_m(domain, lpcfg_workgroup(gensec_security->settings->lp_ctx)) != 0) {
888 0 : DEBUG(3, ("Request for schannel to incorrect domain: %s != our domain %s\n",
889 : domain, lpcfg_workgroup(gensec_security->settings->lp_ctx)));
890 0 : return NT_STATUS_LOGON_FAILURE;
891 : }
892 0 : } else if (bind_schannel.Flags & NL_FLAG_UTF8_DNS_DOMAIN_NAME) {
893 0 : domain = bind_schannel.utf8_dns_domain.u;
894 0 : if (strcasecmp_m(domain, lpcfg_dnsdomain(gensec_security->settings->lp_ctx)) != 0) {
895 0 : DEBUG(3, ("Request for schannel to incorrect domain: %s != our domain %s\n",
896 : domain, lpcfg_dnsdomain(gensec_security->settings->lp_ctx)));
897 0 : return NT_STATUS_LOGON_FAILURE;
898 : }
899 : } else {
900 0 : DEBUG(3, ("Request for schannel to without domain\n"));
901 0 : return NT_STATUS_LOGON_FAILURE;
902 : }
903 :
904 2422 : if (bind_schannel.Flags & NL_FLAG_OEM_NETBIOS_COMPUTER_NAME) {
905 2422 : workstation = bind_schannel.oem_netbios_computer.a;
906 0 : } else if (bind_schannel.Flags & NL_FLAG_UTF8_NETBIOS_COMPUTER_NAME) {
907 0 : workstation = bind_schannel.utf8_netbios_computer.u;
908 : } else {
909 0 : DEBUG(3, ("Request for schannel to without netbios workstation\n"));
910 0 : return NT_STATUS_LOGON_FAILURE;
911 : }
912 :
913 2742 : status = schannel_get_creds_state(out_mem_ctx,
914 2422 : gensec_security->settings->lp_ctx,
915 : workstation, &creds);
916 2422 : if (!NT_STATUS_IS_OK(status)) {
917 0 : DEBUG(3, ("Could not find session key for attempted schannel connection from %s: %s\n",
918 : workstation, nt_errstr(status)));
919 0 : if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_HANDLE)) {
920 0 : return NT_STATUS_LOGON_FAILURE;
921 : }
922 0 : return status;
923 : }
924 :
925 2422 : state = netsec_create_state(gensec_security,
926 : creds, false /* not initiator */);
927 2422 : if (state == NULL) {
928 0 : return NT_STATUS_NO_MEMORY;
929 : }
930 :
931 2422 : status = auth_anonymous_user_info_dc(state,
932 2422 : lpcfg_netbios_name(gensec_security->settings->lp_ctx),
933 : &state->user_info_dc);
934 2422 : if (!NT_STATUS_IS_OK(status)) {
935 0 : return status;
936 : }
937 :
938 2422 : bind_schannel_ack.MessageType = NL_NEGOTIATE_RESPONSE;
939 2422 : bind_schannel_ack.Flags = 0;
940 2422 : bind_schannel_ack.Buffer.dummy = 0x6c0000; /* actually I think
941 : * this does not have
942 : * any meaning here
943 : * - gd */
944 :
945 2422 : ndr_err = ndr_push_struct_blob(out, out_mem_ctx, &bind_schannel_ack,
946 : (ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
947 2422 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
948 0 : status = ndr_map_error2ntstatus(ndr_err);
949 0 : DEBUG(3, ("Could not return schannel bind ack for client %s: %s\n",
950 : workstation, nt_errstr(status)));
951 0 : return status;
952 : }
953 :
954 2422 : return NT_STATUS_OK;
955 : }
956 0 : return NT_STATUS_INVALID_PARAMETER;
957 : }
958 :
959 7214 : static NTSTATUS schannel_update_recv(struct tevent_req *req,
960 : TALLOC_CTX *out_mem_ctx,
961 : DATA_BLOB *out)
962 : {
963 960 : struct schannel_update_state *state =
964 7214 : tevent_req_data(req,
965 : struct schannel_update_state);
966 960 : NTSTATUS status;
967 :
968 7214 : *out = data_blob_null;
969 :
970 7214 : if (tevent_req_is_nterror(req, &status)) {
971 0 : tevent_req_received(req);
972 0 : return status;
973 : }
974 :
975 7214 : status = state->status;
976 7214 : talloc_steal(out_mem_ctx, state->out.data);
977 7214 : *out = state->out;
978 7214 : tevent_req_received(req);
979 7214 : return status;
980 : }
981 :
982 : /**
983 : * Returns anonymous credentials for schannel, matching Win2k3.
984 : *
985 : */
986 :
987 2422 : static NTSTATUS schannel_session_info(struct gensec_security *gensec_security,
988 : TALLOC_CTX *mem_ctx,
989 : struct auth_session_info **_session_info)
990 : {
991 320 : struct schannel_state *state =
992 2422 : talloc_get_type(gensec_security->private_data,
993 : struct schannel_state);
994 2422 : struct auth4_context *auth_ctx = gensec_security->auth_context;
995 2422 : struct auth_session_info *session_info = NULL;
996 2422 : uint32_t session_info_flags = 0;
997 320 : NTSTATUS status;
998 :
999 2422 : if (auth_ctx == NULL) {
1000 0 : DEBUG(0, ("Cannot generate a session_info without the auth_context\n"));
1001 0 : return NT_STATUS_INTERNAL_ERROR;
1002 : }
1003 :
1004 2422 : if (auth_ctx->generate_session_info == NULL) {
1005 0 : DEBUG(0, ("Cannot generate a session_info without the generate_session_info hook\n"));
1006 0 : return NT_STATUS_INTERNAL_ERROR;
1007 : }
1008 :
1009 2422 : if (gensec_security->want_features & GENSEC_FEATURE_UNIX_TOKEN) {
1010 0 : session_info_flags |= AUTH_SESSION_INFO_UNIX_TOKEN;
1011 : }
1012 :
1013 2422 : session_info_flags |= AUTH_SESSION_INFO_SIMPLE_PRIVILEGES;
1014 :
1015 2422 : status = auth_ctx->generate_session_info(
1016 : auth_ctx,
1017 : mem_ctx,
1018 2102 : state->user_info_dc,
1019 2422 : state->user_info_dc->info->account_name,
1020 : session_info_flags,
1021 : &session_info);
1022 2422 : if (!NT_STATUS_IS_OK(status)) {
1023 0 : return status;
1024 : }
1025 :
1026 2422 : *_session_info = session_info;
1027 2422 : return NT_STATUS_OK;
1028 : }
1029 :
1030 : /*
1031 : * Reduce the attack surface by ensuring schannel is not available when
1032 : * we are not a DC
1033 : */
1034 2422 : static NTSTATUS schannel_server_start(struct gensec_security *gensec_security)
1035 : {
1036 2742 : enum server_role server_role
1037 2422 : = lpcfg_server_role(gensec_security->settings->lp_ctx);
1038 :
1039 2422 : switch (server_role) {
1040 2422 : case ROLE_DOMAIN_BDC:
1041 : case ROLE_DOMAIN_PDC:
1042 : case ROLE_ACTIVE_DIRECTORY_DC:
1043 : case ROLE_IPA_DC:
1044 2422 : return NT_STATUS_OK;
1045 0 : default:
1046 0 : return NT_STATUS_NOT_IMPLEMENTED;
1047 : }
1048 : }
1049 :
1050 2396 : static NTSTATUS schannel_client_start(struct gensec_security *gensec_security)
1051 : {
1052 2396 : return NT_STATUS_OK;
1053 : }
1054 :
1055 439965 : static bool schannel_have_feature(struct gensec_security *gensec_security,
1056 : uint32_t feature)
1057 : {
1058 439965 : if (gensec_security->dcerpc_auth_level >= DCERPC_AUTH_LEVEL_INTEGRITY) {
1059 439965 : if (feature & GENSEC_FEATURE_SIGN) {
1060 137506 : return true;
1061 : }
1062 : }
1063 285439 : if (gensec_security->dcerpc_auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
1064 252897 : if (feature & GENSEC_FEATURE_SEAL) {
1065 99848 : return true;
1066 : }
1067 : }
1068 176627 : if (feature & GENSEC_FEATURE_DCE_STYLE) {
1069 95638 : return true;
1070 : }
1071 72529 : if (feature & GENSEC_FEATURE_SIGN_PKT_HEADER) {
1072 7214 : return true;
1073 : }
1074 56999 : return false;
1075 : }
1076 :
1077 : /*
1078 : unseal a packet
1079 : */
1080 34686 : static NTSTATUS schannel_unseal_packet(struct gensec_security *gensec_security,
1081 : uint8_t *data, size_t length,
1082 : const uint8_t *whole_pdu, size_t pdu_length,
1083 : const DATA_BLOB *sig)
1084 : {
1085 2820 : struct schannel_state *state =
1086 34686 : talloc_get_type_abort(gensec_security->private_data,
1087 : struct schannel_state);
1088 :
1089 34686 : return netsec_incoming_packet(state, true,
1090 : discard_const_p(uint8_t, data),
1091 : length,
1092 : whole_pdu, pdu_length,
1093 : sig);
1094 : }
1095 :
1096 : /*
1097 : check the signature on a packet
1098 : */
1099 14136 : static NTSTATUS schannel_check_packet(struct gensec_security *gensec_security,
1100 : const uint8_t *data, size_t length,
1101 : const uint8_t *whole_pdu, size_t pdu_length,
1102 : const DATA_BLOB *sig)
1103 : {
1104 2528 : struct schannel_state *state =
1105 14136 : talloc_get_type_abort(gensec_security->private_data,
1106 : struct schannel_state);
1107 :
1108 14136 : return netsec_incoming_packet(state, false,
1109 : discard_const_p(uint8_t, data),
1110 : length,
1111 : whole_pdu, pdu_length,
1112 : sig);
1113 : }
1114 : /*
1115 : seal a packet
1116 : */
1117 34706 : static NTSTATUS schannel_seal_packet(struct gensec_security *gensec_security,
1118 : TALLOC_CTX *mem_ctx,
1119 : uint8_t *data, size_t length,
1120 : const uint8_t *whole_pdu, size_t pdu_length,
1121 : DATA_BLOB *sig)
1122 : {
1123 2820 : struct schannel_state *state =
1124 34706 : talloc_get_type_abort(gensec_security->private_data,
1125 : struct schannel_state);
1126 :
1127 34706 : return netsec_outgoing_packet(state, mem_ctx, true,
1128 : data, length,
1129 : whole_pdu, pdu_length,
1130 : sig);
1131 : }
1132 :
1133 : /*
1134 : sign a packet
1135 : */
1136 14178 : static NTSTATUS schannel_sign_packet(struct gensec_security *gensec_security,
1137 : TALLOC_CTX *mem_ctx,
1138 : const uint8_t *data, size_t length,
1139 : const uint8_t *whole_pdu, size_t pdu_length,
1140 : DATA_BLOB *sig)
1141 : {
1142 2528 : struct schannel_state *state =
1143 14178 : talloc_get_type_abort(gensec_security->private_data,
1144 : struct schannel_state);
1145 :
1146 14178 : return netsec_outgoing_packet(state, mem_ctx, false,
1147 : discard_const_p(uint8_t, data),
1148 : length,
1149 : whole_pdu, pdu_length,
1150 : sig);
1151 : }
1152 :
1153 : static const struct gensec_security_ops gensec_schannel_security_ops = {
1154 : .name = "schannel",
1155 : .auth_type = DCERPC_AUTH_TYPE_SCHANNEL,
1156 : .client_start = schannel_client_start,
1157 : .server_start = schannel_server_start,
1158 : .update_send = schannel_update_send,
1159 : .update_recv = schannel_update_recv,
1160 : .seal_packet = schannel_seal_packet,
1161 : .sign_packet = schannel_sign_packet,
1162 : .check_packet = schannel_check_packet,
1163 : .unseal_packet = schannel_unseal_packet,
1164 : .session_info = schannel_session_info,
1165 : .sig_size = schannel_sig_size,
1166 : .have_feature = schannel_have_feature,
1167 : .enabled = true,
1168 : .priority = GENSEC_SCHANNEL
1169 : };
1170 :
1171 51385 : _PUBLIC_ NTSTATUS gensec_schannel_init(TALLOC_CTX *ctx)
1172 : {
1173 1174 : NTSTATUS ret;
1174 51385 : ret = gensec_register(ctx, &gensec_schannel_security_ops);
1175 51385 : if (!NT_STATUS_IS_OK(ret)) {
1176 0 : DEBUG(0,("Failed to register '%s' gensec backend!\n",
1177 : gensec_schannel_security_ops.name));
1178 0 : return ret;
1179 : }
1180 :
1181 51385 : return ret;
1182 : }
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