/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- tls_enabled
- tls_socket_init
- tls_pull
- tls_push
- tls_destructor
- tls_handshake
- tls_interrupted
- tls_socket_pending
- tls_socket_recv
- tls_socket_send
- tls_initialise
- tls_init_server
- tls_init_client
- tls_socket_set_option
- tls_socket_get_peer_name
- tls_socket_get_peer_addr
- tls_socket_get_my_addr
- tls_socket_get_fd
- tls_support
- tls_initialise
- tls_init_server
- tls_init_client
- tls_support
1 /*
2 Unix SMB/CIFS implementation.
3
4 transport layer security handling code
5
6 Copyright (C) Andrew Tridgell 2004-2005
7 Copyright (C) Stefan Metzmacher 2004
8 Copyright (C) Andrew Bartlett 2006
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "includes.h"
25 #include "lib/events/events.h"
26 #include "lib/socket/socket.h"
27 #include "lib/tls/tls.h"
28 #include "param/param.h"
29
30 #if ENABLE_GNUTLS
31 #include "gnutls/gnutls.h"
32
33 #define DH_BITS 1024
34
35 #if defined(HAVE_GNUTLS_DATUM) && !defined(HAVE_GNUTLS_DATUM_T)
36 typedef gnutls_datum gnutls_datum_t;
37 #endif
38
39 /* hold persistent tls data */
40 struct tls_params {
41 gnutls_certificate_credentials x509_cred;
42 gnutls_dh_params dh_params;
43 bool tls_enabled;
44 };
45 #endif
46
47 /* hold per connection tls data */
48 struct tls_context {
49 struct socket_context *socket;
50 struct tevent_fd *fde;
51 bool tls_enabled;
52 #if ENABLE_GNUTLS
53 gnutls_session session;
54 bool done_handshake;
55 bool have_first_byte;
56 uint8_t first_byte;
57 bool tls_detect;
58 const char *plain_chars;
59 bool output_pending;
60 gnutls_certificate_credentials xcred;
61 bool interrupted;
62 #endif
63 };
64
65 bool tls_enabled(struct socket_context *sock)
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66 {
67 struct tls_context *tls;
68 if (!sock) {
69 return false;
70 }
71 if (strcmp(sock->backend_name, "tls") != 0) {
72 return false;
73 }
74 tls = talloc_get_type(sock->private_data, struct tls_context);
75 if (!tls) {
76 return false;
77 }
78 return tls->tls_enabled;
79 }
80
81
82 #if ENABLE_GNUTLS
83
84 static const struct socket_ops tls_socket_ops;
85
86 static NTSTATUS tls_socket_init(struct socket_context *sock)
/* [<][>][^][v][top][bottom][index][help] */
87 {
88 switch (sock->type) {
89 case SOCKET_TYPE_STREAM:
90 break;
91 default:
92 return NT_STATUS_INVALID_PARAMETER;
93 }
94
95 sock->backend_name = "tls";
96
97 return NT_STATUS_OK;
98 }
99
100 #define TLSCHECK(call) do { \
101 ret = call; \
102 if (ret < 0) { \
103 DEBUG(0,("TLS %s - %s\n", #call, gnutls_strerror(ret))); \
104 goto failed; \
105 } \
106 } while (0)
107
108
109 /*
110 callback for reading from a socket
111 */
112 static ssize_t tls_pull(gnutls_transport_ptr ptr, void *buf, size_t size)
/* [<][>][^][v][top][bottom][index][help] */
113 {
114 struct tls_context *tls = talloc_get_type(ptr, struct tls_context);
115 NTSTATUS status;
116 size_t nread;
117
118 if (tls->have_first_byte) {
119 *(uint8_t *)buf = tls->first_byte;
120 tls->have_first_byte = false;
121 return 1;
122 }
123
124 status = socket_recv(tls->socket, buf, size, &nread);
125 if (NT_STATUS_EQUAL(status, NT_STATUS_END_OF_FILE)) {
126 return 0;
127 }
128 if (NT_STATUS_IS_ERR(status)) {
129 EVENT_FD_NOT_READABLE(tls->fde);
130 EVENT_FD_NOT_WRITEABLE(tls->fde);
131 errno = EBADF;
132 return -1;
133 }
134 if (!NT_STATUS_IS_OK(status)) {
135 EVENT_FD_READABLE(tls->fde);
136 errno = EAGAIN;
137 return -1;
138 }
139 if (tls->output_pending) {
140 EVENT_FD_WRITEABLE(tls->fde);
141 }
142 if (size != nread) {
143 EVENT_FD_READABLE(tls->fde);
144 }
145 return nread;
146 }
147
148 /*
149 callback for writing to a socket
150 */
151 static ssize_t tls_push(gnutls_transport_ptr ptr, const void *buf, size_t size)
/* [<][>][^][v][top][bottom][index][help] */
152 {
153 struct tls_context *tls = talloc_get_type(ptr, struct tls_context);
154 NTSTATUS status;
155 size_t nwritten;
156 DATA_BLOB b;
157
158 if (!tls->tls_enabled) {
159 return size;
160 }
161
162 b.data = discard_const(buf);
163 b.length = size;
164
165 status = socket_send(tls->socket, &b, &nwritten);
166 if (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
167 errno = EAGAIN;
168 return -1;
169 }
170 if (!NT_STATUS_IS_OK(status)) {
171 EVENT_FD_WRITEABLE(tls->fde);
172 return -1;
173 }
174 if (size != nwritten) {
175 EVENT_FD_WRITEABLE(tls->fde);
176 }
177 return nwritten;
178 }
179
180 /*
181 destroy a tls session
182 */
183 static int tls_destructor(struct tls_context *tls)
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184 {
185 int ret;
186 ret = gnutls_bye(tls->session, GNUTLS_SHUT_WR);
187 if (ret < 0) {
188 DEBUG(0,("TLS gnutls_bye failed - %s\n", gnutls_strerror(ret)));
189 }
190 return 0;
191 }
192
193
194 /*
195 possibly continue the handshake process
196 */
197 static NTSTATUS tls_handshake(struct tls_context *tls)
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198 {
199 int ret;
200
201 if (tls->done_handshake) {
202 return NT_STATUS_OK;
203 }
204
205 ret = gnutls_handshake(tls->session);
206 if (ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN) {
207 if (gnutls_record_get_direction(tls->session) == 1) {
208 EVENT_FD_WRITEABLE(tls->fde);
209 }
210 return STATUS_MORE_ENTRIES;
211 }
212 if (ret < 0) {
213 DEBUG(0,("TLS gnutls_handshake failed - %s\n", gnutls_strerror(ret)));
214 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
215 }
216 tls->done_handshake = true;
217 return NT_STATUS_OK;
218 }
219
220 /*
221 possibly continue an interrupted operation
222 */
223 static NTSTATUS tls_interrupted(struct tls_context *tls)
/* [<][>][^][v][top][bottom][index][help] */
224 {
225 int ret;
226
227 if (!tls->interrupted) {
228 return NT_STATUS_OK;
229 }
230 if (gnutls_record_get_direction(tls->session) == 1) {
231 ret = gnutls_record_send(tls->session, NULL, 0);
232 } else {
233 ret = gnutls_record_recv(tls->session, NULL, 0);
234 }
235 if (ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN) {
236 return STATUS_MORE_ENTRIES;
237 }
238 tls->interrupted = false;
239 return NT_STATUS_OK;
240 }
241
242 /*
243 see how many bytes are pending on the connection
244 */
245 static NTSTATUS tls_socket_pending(struct socket_context *sock, size_t *npending)
/* [<][>][^][v][top][bottom][index][help] */
246 {
247 struct tls_context *tls = talloc_get_type(sock->private_data, struct tls_context);
248 if (!tls->tls_enabled || tls->tls_detect) {
249 return socket_pending(tls->socket, npending);
250 }
251 *npending = gnutls_record_check_pending(tls->session);
252 if (*npending == 0) {
253 NTSTATUS status = socket_pending(tls->socket, npending);
254 if (*npending == 0) {
255 /* seems to be a gnutls bug */
256 (*npending) = 100;
257 }
258 return status;
259 }
260 return NT_STATUS_OK;
261 }
262
263 /*
264 receive data either by tls or normal socket_recv
265 */
266 static NTSTATUS tls_socket_recv(struct socket_context *sock, void *buf,
/* [<][>][^][v][top][bottom][index][help] */
267 size_t wantlen, size_t *nread)
268 {
269 int ret;
270 NTSTATUS status;
271 struct tls_context *tls = talloc_get_type(sock->private_data, struct tls_context);
272
273 if (tls->tls_enabled && tls->tls_detect) {
274 status = socket_recv(tls->socket, &tls->first_byte, 1, nread);
275 NT_STATUS_NOT_OK_RETURN(status);
276 if (*nread == 0) return NT_STATUS_OK;
277 tls->tls_detect = false;
278 /* look for the first byte of a valid HTTP operation */
279 if (strchr(tls->plain_chars, tls->first_byte)) {
280 /* not a tls link */
281 tls->tls_enabled = false;
282 *(uint8_t *)buf = tls->first_byte;
283 return NT_STATUS_OK;
284 }
285 tls->have_first_byte = true;
286 }
287
288 if (!tls->tls_enabled) {
289 return socket_recv(tls->socket, buf, wantlen, nread);
290 }
291
292 status = tls_handshake(tls);
293 NT_STATUS_NOT_OK_RETURN(status);
294
295 status = tls_interrupted(tls);
296 NT_STATUS_NOT_OK_RETURN(status);
297
298 ret = gnutls_record_recv(tls->session, buf, wantlen);
299 if (ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN) {
300 if (gnutls_record_get_direction(tls->session) == 1) {
301 EVENT_FD_WRITEABLE(tls->fde);
302 }
303 tls->interrupted = true;
304 return STATUS_MORE_ENTRIES;
305 }
306 if (ret < 0) {
307 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
308 }
309 *nread = ret;
310 return NT_STATUS_OK;
311 }
312
313
314 /*
315 send data either by tls or normal socket_recv
316 */
317 static NTSTATUS tls_socket_send(struct socket_context *sock,
/* [<][>][^][v][top][bottom][index][help] */
318 const DATA_BLOB *blob, size_t *sendlen)
319 {
320 NTSTATUS status;
321 int ret;
322 struct tls_context *tls = talloc_get_type(sock->private_data, struct tls_context);
323
324 if (!tls->tls_enabled) {
325 return socket_send(tls->socket, blob, sendlen);
326 }
327
328 status = tls_handshake(tls);
329 NT_STATUS_NOT_OK_RETURN(status);
330
331 status = tls_interrupted(tls);
332 NT_STATUS_NOT_OK_RETURN(status);
333
334 ret = gnutls_record_send(tls->session, blob->data, blob->length);
335 if (ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN) {
336 if (gnutls_record_get_direction(tls->session) == 1) {
337 EVENT_FD_WRITEABLE(tls->fde);
338 }
339 tls->interrupted = true;
340 return STATUS_MORE_ENTRIES;
341 }
342 if (ret < 0) {
343 DEBUG(0,("gnutls_record_send of %d failed - %s\n", (int)blob->length, gnutls_strerror(ret)));
344 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
345 }
346 *sendlen = ret;
347 tls->output_pending = (ret < blob->length);
348 return NT_STATUS_OK;
349 }
350
351
352 /*
353 initialise global tls state
354 */
355 struct tls_params *tls_initialise(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx)
/* [<][>][^][v][top][bottom][index][help] */
356 {
357 struct tls_params *params;
358 int ret;
359 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
360 const char *keyfile = lp_tls_keyfile(tmp_ctx, lp_ctx);
361 const char *certfile = lp_tls_certfile(tmp_ctx, lp_ctx);
362 const char *cafile = lp_tls_cafile(tmp_ctx, lp_ctx);
363 const char *crlfile = lp_tls_crlfile(tmp_ctx, lp_ctx);
364 const char *dhpfile = lp_tls_dhpfile(tmp_ctx, lp_ctx);
365 void tls_cert_generate(TALLOC_CTX *, const char *, const char *, const char *, const char *);
366 params = talloc(mem_ctx, struct tls_params);
367 if (params == NULL) {
368 talloc_free(tmp_ctx);
369 return NULL;
370 }
371
372 if (!lp_tls_enabled(lp_ctx) || keyfile == NULL || *keyfile == 0) {
373 params->tls_enabled = false;
374 talloc_free(tmp_ctx);
375 return params;
376 }
377
378 if (!file_exist(cafile)) {
379 char *hostname = talloc_asprintf(mem_ctx, "%s.%s",
380 lp_netbios_name(lp_ctx), lp_realm(lp_ctx));
381 if (hostname == NULL) {
382 goto init_failed;
383 }
384 tls_cert_generate(params, hostname, keyfile, certfile, cafile);
385 talloc_free(hostname);
386 }
387
388 ret = gnutls_global_init();
389 if (ret < 0) goto init_failed;
390
391 gnutls_certificate_allocate_credentials(¶ms->x509_cred);
392 if (ret < 0) goto init_failed;
393
394 if (cafile && *cafile) {
395 ret = gnutls_certificate_set_x509_trust_file(params->x509_cred, cafile,
396 GNUTLS_X509_FMT_PEM);
397 if (ret < 0) {
398 DEBUG(0,("TLS failed to initialise cafile %s\n", cafile));
399 goto init_failed;
400 }
401 }
402
403 if (crlfile && *crlfile) {
404 ret = gnutls_certificate_set_x509_crl_file(params->x509_cred,
405 crlfile,
406 GNUTLS_X509_FMT_PEM);
407 if (ret < 0) {
408 DEBUG(0,("TLS failed to initialise crlfile %s\n", crlfile));
409 goto init_failed;
410 }
411 }
412
413 ret = gnutls_certificate_set_x509_key_file(params->x509_cred,
414 certfile, keyfile,
415 GNUTLS_X509_FMT_PEM);
416 if (ret < 0) {
417 DEBUG(0,("TLS failed to initialise certfile %s and keyfile %s\n",
418 certfile, keyfile));
419 goto init_failed;
420 }
421
422
423 ret = gnutls_dh_params_init(¶ms->dh_params);
424 if (ret < 0) goto init_failed;
425
426 if (dhpfile && *dhpfile) {
427 gnutls_datum_t dhparms;
428 size_t size;
429 dhparms.data = (uint8_t *)file_load(dhpfile, &size, 0, mem_ctx);
430
431 if (!dhparms.data) {
432 DEBUG(0,("Failed to read DH Parms from %s\n", dhpfile));
433 goto init_failed;
434 }
435 dhparms.size = size;
436
437 ret = gnutls_dh_params_import_pkcs3(params->dh_params, &dhparms, GNUTLS_X509_FMT_PEM);
438 if (ret < 0) goto init_failed;
439 } else {
440 ret = gnutls_dh_params_generate2(params->dh_params, DH_BITS);
441 if (ret < 0) goto init_failed;
442 }
443
444 gnutls_certificate_set_dh_params(params->x509_cred, params->dh_params);
445
446 params->tls_enabled = true;
447
448 talloc_free(tmp_ctx);
449 return params;
450
451 init_failed:
452 DEBUG(0,("GNUTLS failed to initialise - %s\n", gnutls_strerror(ret)));
453 params->tls_enabled = false;
454 talloc_free(tmp_ctx);
455 return params;
456 }
457
458
459 /*
460 setup for a new connection
461 */
462 struct socket_context *tls_init_server(struct tls_params *params,
/* [<][>][^][v][top][bottom][index][help] */
463 struct socket_context *socket_ctx,
464 struct tevent_fd *fde,
465 const char *plain_chars)
466 {
467 struct tls_context *tls;
468 int ret;
469 struct socket_context *new_sock;
470 NTSTATUS nt_status;
471
472 nt_status = socket_create_with_ops(socket_ctx, &tls_socket_ops, &new_sock,
473 SOCKET_TYPE_STREAM,
474 socket_ctx->flags | SOCKET_FLAG_ENCRYPT);
475 if (!NT_STATUS_IS_OK(nt_status)) {
476 return NULL;
477 }
478
479 tls = talloc(new_sock, struct tls_context);
480 if (tls == NULL) {
481 return NULL;
482 }
483
484 tls->socket = socket_ctx;
485 tls->fde = fde;
486 if (talloc_reference(tls, fde) == NULL) {
487 talloc_free(new_sock);
488 return NULL;
489 }
490 if (talloc_reference(tls, socket_ctx) == NULL) {
491 talloc_free(new_sock);
492 return NULL;
493 }
494
495 new_sock->private_data = tls;
496
497 if (!params->tls_enabled) {
498 talloc_free(new_sock);
499 return NULL;
500 }
501
502 TLSCHECK(gnutls_init(&tls->session, GNUTLS_SERVER));
503
504 talloc_set_destructor(tls, tls_destructor);
505
506 TLSCHECK(gnutls_set_default_priority(tls->session));
507 TLSCHECK(gnutls_credentials_set(tls->session, GNUTLS_CRD_CERTIFICATE,
508 params->x509_cred));
509 gnutls_certificate_server_set_request(tls->session, GNUTLS_CERT_REQUEST);
510 gnutls_dh_set_prime_bits(tls->session, DH_BITS);
511 gnutls_transport_set_ptr(tls->session, (gnutls_transport_ptr)tls);
512 gnutls_transport_set_pull_function(tls->session, (gnutls_pull_func)tls_pull);
513 gnutls_transport_set_push_function(tls->session, (gnutls_push_func)tls_push);
514 gnutls_transport_set_lowat(tls->session, 0);
515
516 tls->plain_chars = plain_chars;
517 if (plain_chars) {
518 tls->tls_detect = true;
519 } else {
520 tls->tls_detect = false;
521 }
522
523 tls->output_pending = false;
524 tls->done_handshake = false;
525 tls->have_first_byte = false;
526 tls->tls_enabled = true;
527 tls->interrupted = false;
528
529 new_sock->state = SOCKET_STATE_SERVER_CONNECTED;
530
531 return new_sock;
532
533 failed:
534 DEBUG(0,("TLS init connection failed - %s\n", gnutls_strerror(ret)));
535 talloc_free(new_sock);
536 return NULL;
537 }
538
539
540 /*
541 setup for a new client connection
542 */
543 struct socket_context *tls_init_client(struct socket_context *socket_ctx,
/* [<][>][^][v][top][bottom][index][help] */
544 struct tevent_fd *fde,
545 const char *ca_path)
546 {
547 struct tls_context *tls;
548 int ret = 0;
549 const int cert_type_priority[] = { GNUTLS_CRT_X509, GNUTLS_CRT_OPENPGP, 0 };
550 char *cafile;
551 struct socket_context *new_sock;
552 NTSTATUS nt_status;
553
554 nt_status = socket_create_with_ops(socket_ctx, &tls_socket_ops, &new_sock,
555 SOCKET_TYPE_STREAM,
556 socket_ctx->flags | SOCKET_FLAG_ENCRYPT);
557 if (!NT_STATUS_IS_OK(nt_status)) {
558 return NULL;
559 }
560
561 tls = talloc(new_sock, struct tls_context);
562 if (tls == NULL) return NULL;
563
564 tls->socket = socket_ctx;
565 tls->fde = fde;
566 if (talloc_reference(tls, fde) == NULL) {
567 return NULL;
568 }
569 if (talloc_reference(tls, socket_ctx) == NULL) {
570 return NULL;
571 }
572 new_sock->private_data = tls;
573
574 gnutls_global_init();
575
576 gnutls_certificate_allocate_credentials(&tls->xcred);
577 gnutls_certificate_set_x509_trust_file(tls->xcred, cafile, GNUTLS_X509_FMT_PEM);
578 TLSCHECK(gnutls_init(&tls->session, GNUTLS_CLIENT));
579 TLSCHECK(gnutls_set_default_priority(tls->session));
580 gnutls_certificate_type_set_priority(tls->session, cert_type_priority);
581 TLSCHECK(gnutls_credentials_set(tls->session, GNUTLS_CRD_CERTIFICATE, tls->xcred));
582
583 talloc_set_destructor(tls, tls_destructor);
584
585 gnutls_transport_set_ptr(tls->session, (gnutls_transport_ptr)tls);
586 gnutls_transport_set_pull_function(tls->session, (gnutls_pull_func)tls_pull);
587 gnutls_transport_set_push_function(tls->session, (gnutls_push_func)tls_push);
588 gnutls_transport_set_lowat(tls->session, 0);
589 tls->tls_detect = false;
590
591 tls->output_pending = false;
592 tls->done_handshake = false;
593 tls->have_first_byte = false;
594 tls->tls_enabled = true;
595 tls->interrupted = false;
596
597 new_sock->state = SOCKET_STATE_CLIENT_CONNECTED;
598
599 return new_sock;
600
601 failed:
602 DEBUG(0,("TLS init connection failed - %s\n", gnutls_strerror(ret)));
603 tls->tls_enabled = false;
604 return new_sock;
605 }
606
607 static NTSTATUS tls_socket_set_option(struct socket_context *sock, const char *option, const char *val)
/* [<][>][^][v][top][bottom][index][help] */
608 {
609 set_socket_options(socket_get_fd(sock), option);
610 return NT_STATUS_OK;
611 }
612
613 static char *tls_socket_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
/* [<][>][^][v][top][bottom][index][help] */
614 {
615 struct tls_context *tls = talloc_get_type(sock->private_data, struct tls_context);
616 return socket_get_peer_name(tls->socket, mem_ctx);
617 }
618
619 static struct socket_address *tls_socket_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
/* [<][>][^][v][top][bottom][index][help] */
620 {
621 struct tls_context *tls = talloc_get_type(sock->private_data, struct tls_context);
622 return socket_get_peer_addr(tls->socket, mem_ctx);
623 }
624
625 static struct socket_address *tls_socket_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
/* [<][>][^][v][top][bottom][index][help] */
626 {
627 struct tls_context *tls = talloc_get_type(sock->private_data, struct tls_context);
628 return socket_get_my_addr(tls->socket, mem_ctx);
629 }
630
631 static int tls_socket_get_fd(struct socket_context *sock)
/* [<][>][^][v][top][bottom][index][help] */
632 {
633 struct tls_context *tls = talloc_get_type(sock->private_data, struct tls_context);
634 return socket_get_fd(tls->socket);
635 }
636
637 static const struct socket_ops tls_socket_ops = {
638 .name = "tls",
639 .fn_init = tls_socket_init,
640 .fn_recv = tls_socket_recv,
641 .fn_send = tls_socket_send,
642 .fn_pending = tls_socket_pending,
643
644 .fn_set_option = tls_socket_set_option,
645
646 .fn_get_peer_name = tls_socket_get_peer_name,
647 .fn_get_peer_addr = tls_socket_get_peer_addr,
648 .fn_get_my_addr = tls_socket_get_my_addr,
649 .fn_get_fd = tls_socket_get_fd
650 };
651
652 bool tls_support(struct tls_params *params)
/* [<][>][^][v][top][bottom][index][help] */
653 {
654 return params->tls_enabled;
655 }
656
657 #else
658
659 /* for systems without tls we just fail the operations, and the caller
660 * will retain the original socket */
661
662 struct tls_params *tls_initialise(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx)
/* [<][>][^][v][top][bottom][index][help] */
663 {
664 return talloc_new(mem_ctx);
665 }
666
667 /*
668 setup for a new connection
669 */
670 struct socket_context *tls_init_server(struct tls_params *params,
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671 struct socket_context *socket,
672 struct tevent_fd *fde,
673 const char *plain_chars)
674 {
675 return NULL;
676 }
677
678
679 /*
680 setup for a new client connection
681 */
682 struct socket_context *tls_init_client(struct socket_context *socket,
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683 struct tevent_fd *fde,
684 const char *ca_path)
685 {
686 return NULL;
687 }
688
689 bool tls_support(struct tls_params *params)
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690 {
691 return false;
692 }
693
694 #endif
695