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Diffstat (limited to 'src/lib/libssl/bio_ssl.c')
-rw-r--r--src/lib/libssl/bio_ssl.c592
1 files changed, 0 insertions, 592 deletions
diff --git a/src/lib/libssl/bio_ssl.c b/src/lib/libssl/bio_ssl.c
deleted file mode 100644
index 1a8cda84d6..0000000000
--- a/src/lib/libssl/bio_ssl.c
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1/* $OpenBSD: bio_ssl.c,v 1.38 2023/02/16 08:38:17 tb Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <errno.h>
60#include <stdio.h>
61#include <stdlib.h>
62#include <string.h>
63
64#include <openssl/bio.h>
65#include <openssl/crypto.h>
66#include <openssl/err.h>
67#include <openssl/ssl.h>
68
69#include "bio_local.h"
70#include "ssl_local.h"
71
72static int ssl_write(BIO *h, const char *buf, int num);
73static int ssl_read(BIO *h, char *buf, int size);
74static int ssl_puts(BIO *h, const char *str);
75static long ssl_ctrl(BIO *h, int cmd, long arg1, void *arg2);
76static int ssl_new(BIO *h);
77static int ssl_free(BIO *data);
78static long ssl_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);
79typedef struct bio_ssl_st {
80 SSL *ssl; /* The ssl handle :-) */
81 /* re-negotiate every time the total number of bytes is this size */
82 int num_renegotiates;
83 unsigned long renegotiate_count;
84 unsigned long byte_count;
85 unsigned long renegotiate_timeout;
86 time_t last_time;
87} BIO_SSL;
88
89static const BIO_METHOD methods_sslp = {
90 .type = BIO_TYPE_SSL,
91 .name = "ssl",
92 .bwrite = ssl_write,
93 .bread = ssl_read,
94 .bputs = ssl_puts,
95 .ctrl = ssl_ctrl,
96 .create = ssl_new,
97 .destroy = ssl_free,
98 .callback_ctrl = ssl_callback_ctrl,
99};
100
101const BIO_METHOD *
102BIO_f_ssl(void)
103{
104 return (&methods_sslp);
105}
106LSSL_ALIAS(BIO_f_ssl);
107
108static int
109ssl_new(BIO *bi)
110{
111 BIO_SSL *bs;
112
113 bs = calloc(1, sizeof(BIO_SSL));
114 if (bs == NULL) {
115 SSLerrorx(ERR_R_MALLOC_FAILURE);
116 return (0);
117 }
118 bi->init = 0;
119 bi->ptr = (char *)bs;
120 bi->flags = 0;
121 return (1);
122}
123
124static int
125ssl_free(BIO *a)
126{
127 BIO_SSL *bs;
128
129 if (a == NULL)
130 return (0);
131 bs = (BIO_SSL *)a->ptr;
132 if (bs->ssl != NULL)
133 SSL_shutdown(bs->ssl);
134 if (a->shutdown) {
135 if (a->init && (bs->ssl != NULL))
136 SSL_free(bs->ssl);
137 a->init = 0;
138 a->flags = 0;
139 }
140 free(a->ptr);
141 return (1);
142}
143
144static int
145ssl_read(BIO *b, char *out, int outl)
146{
147 int ret = 1;
148 BIO_SSL *sb;
149 SSL *ssl;
150 int retry_reason = 0;
151 int r = 0;
152
153 if (out == NULL)
154 return (0);
155 sb = (BIO_SSL *)b->ptr;
156 ssl = sb->ssl;
157
158 BIO_clear_retry_flags(b);
159
160 ret = SSL_read(ssl, out, outl);
161
162 switch (SSL_get_error(ssl, ret)) {
163 case SSL_ERROR_NONE:
164 if (ret <= 0)
165 break;
166 if (sb->renegotiate_count > 0) {
167 sb->byte_count += ret;
168 if (sb->byte_count > sb->renegotiate_count) {
169 sb->byte_count = 0;
170 sb->num_renegotiates++;
171 SSL_renegotiate(ssl);
172 r = 1;
173 }
174 }
175 if ((sb->renegotiate_timeout > 0) && (!r)) {
176 time_t tm;
177
178 tm = time(NULL);
179 if (tm > sb->last_time + sb->renegotiate_timeout) {
180 sb->last_time = tm;
181 sb->num_renegotiates++;
182 SSL_renegotiate(ssl);
183 }
184 }
185
186 break;
187 case SSL_ERROR_WANT_READ:
188 BIO_set_retry_read(b);
189 break;
190 case SSL_ERROR_WANT_WRITE:
191 BIO_set_retry_write(b);
192 break;
193 case SSL_ERROR_WANT_X509_LOOKUP:
194 BIO_set_retry_special(b);
195 retry_reason = BIO_RR_SSL_X509_LOOKUP;
196 break;
197 case SSL_ERROR_WANT_ACCEPT:
198 BIO_set_retry_special(b);
199 retry_reason = BIO_RR_ACCEPT;
200 break;
201 case SSL_ERROR_WANT_CONNECT:
202 BIO_set_retry_special(b);
203 retry_reason = BIO_RR_CONNECT;
204 break;
205 case SSL_ERROR_SYSCALL:
206 case SSL_ERROR_SSL:
207 case SSL_ERROR_ZERO_RETURN:
208 default:
209 break;
210 }
211
212 b->retry_reason = retry_reason;
213 return (ret);
214}
215
216static int
217ssl_write(BIO *b, const char *out, int outl)
218{
219 int ret, r = 0;
220 int retry_reason = 0;
221 SSL *ssl;
222 BIO_SSL *bs;
223
224 if (out == NULL)
225 return (0);
226 bs = (BIO_SSL *)b->ptr;
227 ssl = bs->ssl;
228
229 BIO_clear_retry_flags(b);
230
231/* ret=SSL_do_handshake(ssl);
232 if (ret > 0) */
233 ret = SSL_write(ssl, out, outl);
234
235 switch (SSL_get_error(ssl, ret)) {
236 case SSL_ERROR_NONE:
237 if (ret <= 0)
238 break;
239 if (bs->renegotiate_count > 0) {
240 bs->byte_count += ret;
241 if (bs->byte_count > bs->renegotiate_count) {
242 bs->byte_count = 0;
243 bs->num_renegotiates++;
244 SSL_renegotiate(ssl);
245 r = 1;
246 }
247 }
248 if ((bs->renegotiate_timeout > 0) && (!r)) {
249 time_t tm;
250
251 tm = time(NULL);
252 if (tm > bs->last_time + bs->renegotiate_timeout) {
253 bs->last_time = tm;
254 bs->num_renegotiates++;
255 SSL_renegotiate(ssl);
256 }
257 }
258 break;
259 case SSL_ERROR_WANT_WRITE:
260 BIO_set_retry_write(b);
261 break;
262 case SSL_ERROR_WANT_READ:
263 BIO_set_retry_read(b);
264 break;
265 case SSL_ERROR_WANT_X509_LOOKUP:
266 BIO_set_retry_special(b);
267 retry_reason = BIO_RR_SSL_X509_LOOKUP;
268 break;
269 case SSL_ERROR_WANT_CONNECT:
270 BIO_set_retry_special(b);
271 retry_reason = BIO_RR_CONNECT;
272 case SSL_ERROR_SYSCALL:
273 case SSL_ERROR_SSL:
274 default:
275 break;
276 }
277
278 b->retry_reason = retry_reason;
279 return (ret);
280}
281
282static long
283ssl_ctrl(BIO *b, int cmd, long num, void *ptr)
284{
285 SSL **sslp, *ssl;
286 BIO_SSL *bs;
287 BIO *dbio, *bio;
288 long ret = 1;
289
290 bs = (BIO_SSL *)b->ptr;
291 ssl = bs->ssl;
292 if ((ssl == NULL) && (cmd != BIO_C_SET_SSL))
293 return (0);
294 switch (cmd) {
295 case BIO_CTRL_RESET:
296 SSL_shutdown(ssl);
297
298 if (ssl->handshake_func == ssl->method->ssl_connect)
299 SSL_set_connect_state(ssl);
300 else if (ssl->handshake_func == ssl->method->ssl_accept)
301 SSL_set_accept_state(ssl);
302
303 SSL_clear(ssl);
304
305 if (b->next_bio != NULL)
306 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
307 else if (ssl->rbio != NULL)
308 ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
309 else
310 ret = 1;
311 break;
312 case BIO_CTRL_INFO:
313 ret = 0;
314 break;
315 case BIO_C_SSL_MODE:
316 if (num) /* client mode */
317 SSL_set_connect_state(ssl);
318 else
319 SSL_set_accept_state(ssl);
320 break;
321 case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
322 ret = bs->renegotiate_timeout;
323 if (num < 60)
324 num = 5;
325 bs->renegotiate_timeout = (unsigned long)num;
326 bs->last_time = time(NULL);
327 break;
328 case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
329 ret = bs->renegotiate_count;
330 if ((long)num >=512)
331 bs->renegotiate_count = (unsigned long)num;
332 break;
333 case BIO_C_GET_SSL_NUM_RENEGOTIATES:
334 ret = bs->num_renegotiates;
335 break;
336 case BIO_C_SET_SSL:
337 if (ssl != NULL) {
338 ssl_free(b);
339 if (!ssl_new(b))
340 return 0;
341 }
342 b->shutdown = (int)num;
343 ssl = (SSL *)ptr;
344 ((BIO_SSL *)b->ptr)->ssl = ssl;
345 bio = SSL_get_rbio(ssl);
346 if (bio != NULL) {
347 if (b->next_bio != NULL)
348 BIO_push(bio, b->next_bio);
349 b->next_bio = bio;
350 CRYPTO_add(&bio->references, 1, CRYPTO_LOCK_BIO);
351 }
352 b->init = 1;
353 break;
354 case BIO_C_GET_SSL:
355 if (ptr != NULL) {
356 sslp = (SSL **)ptr;
357 *sslp = ssl;
358 } else
359 ret = 0;
360 break;
361 case BIO_CTRL_GET_CLOSE:
362 ret = b->shutdown;
363 break;
364 case BIO_CTRL_SET_CLOSE:
365 b->shutdown = (int)num;
366 break;
367 case BIO_CTRL_WPENDING:
368 ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
369 break;
370 case BIO_CTRL_PENDING:
371 ret = SSL_pending(ssl);
372 if (ret == 0)
373 ret = BIO_pending(ssl->rbio);
374 break;
375 case BIO_CTRL_FLUSH:
376 BIO_clear_retry_flags(b);
377 ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
378 BIO_copy_next_retry(b);
379 break;
380 case BIO_CTRL_PUSH:
381 if ((b->next_bio != NULL) && (b->next_bio != ssl->rbio)) {
382 SSL_set_bio(ssl, b->next_bio, b->next_bio);
383 CRYPTO_add(&b->next_bio->references, 1,
384 CRYPTO_LOCK_BIO);
385 }
386 break;
387 case BIO_CTRL_POP:
388 /* Only detach if we are the BIO explicitly being popped */
389 if (b == ptr) {
390 /* Shouldn't happen in practice because the
391 * rbio and wbio are the same when pushed.
392 */
393 if (ssl->rbio != ssl->wbio)
394 BIO_free_all(ssl->wbio);
395 if (b->next_bio != NULL)
396 CRYPTO_add(&b->next_bio->references, -1, CRYPTO_LOCK_BIO);
397 ssl->wbio = NULL;
398 ssl->rbio = NULL;
399 }
400 break;
401 case BIO_C_DO_STATE_MACHINE:
402 BIO_clear_retry_flags(b);
403
404 b->retry_reason = 0;
405 ret = (int)SSL_do_handshake(ssl);
406
407 switch (SSL_get_error(ssl, (int)ret)) {
408 case SSL_ERROR_WANT_READ:
409 BIO_set_flags(b,
410 BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
411 break;
412 case SSL_ERROR_WANT_WRITE:
413 BIO_set_flags(b,
414 BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);
415 break;
416 case SSL_ERROR_WANT_CONNECT:
417 BIO_set_flags(b,
418 BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY);
419 b->retry_reason = b->next_bio->retry_reason;
420 break;
421 default:
422 break;
423 }
424 break;
425 case BIO_CTRL_DUP:
426 dbio = (BIO *)ptr;
427 if (((BIO_SSL *)dbio->ptr)->ssl != NULL)
428 SSL_free(((BIO_SSL *)dbio->ptr)->ssl);
429 ((BIO_SSL *)dbio->ptr)->ssl = SSL_dup(ssl);
430 ((BIO_SSL *)dbio->ptr)->renegotiate_count =
431 ((BIO_SSL *)b->ptr)->renegotiate_count;
432 ((BIO_SSL *)dbio->ptr)->byte_count =
433 ((BIO_SSL *)b->ptr)->byte_count;
434 ((BIO_SSL *)dbio->ptr)->renegotiate_timeout =
435 ((BIO_SSL *)b->ptr)->renegotiate_timeout;
436 ((BIO_SSL *)dbio->ptr)->last_time =
437 ((BIO_SSL *)b->ptr)->last_time;
438 ret = (((BIO_SSL *)dbio->ptr)->ssl != NULL);
439 break;
440 case BIO_C_GET_FD:
441 ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
442 break;
443 case BIO_CTRL_SET_CALLBACK:
444 {
445 ret = 0;
446 }
447 break;
448 case BIO_CTRL_GET_CALLBACK:
449 {
450 void (**fptr)(const SSL *xssl, int type, int val);
451
452 fptr = (void (**)(const SSL *xssl, int type, int val))
453 ptr;
454 *fptr = SSL_get_info_callback(ssl);
455 }
456 break;
457 default:
458 ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
459 break;
460 }
461 return (ret);
462}
463
464static long
465ssl_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
466{
467 SSL *ssl;
468 BIO_SSL *bs;
469 long ret = 1;
470
471 bs = (BIO_SSL *)b->ptr;
472 ssl = bs->ssl;
473 switch (cmd) {
474 case BIO_CTRL_SET_CALLBACK:
475 {
476 /* FIXME: setting this via a completely different prototype
477 seems like a crap idea */
478 SSL_set_info_callback(ssl,
479 (void (*)(const SSL *, int, int))fp);
480 }
481 break;
482 default:
483 ret = BIO_callback_ctrl(ssl->rbio, cmd, fp);
484 break;
485 }
486 return (ret);
487}
488
489static int
490ssl_puts(BIO *bp, const char *str)
491{
492 int n, ret;
493
494 n = strlen(str);
495 ret = BIO_write(bp, str, n);
496 return (ret);
497}
498
499BIO *
500BIO_new_buffer_ssl_connect(SSL_CTX *ctx)
501{
502 BIO *ret = NULL, *buf = NULL, *ssl = NULL;
503
504 if ((buf = BIO_new(BIO_f_buffer())) == NULL)
505 goto err;
506 if ((ssl = BIO_new_ssl_connect(ctx)) == NULL)
507 goto err;
508 if ((ret = BIO_push(buf, ssl)) == NULL)
509 goto err;
510 return (ret);
511
512 err:
513 BIO_free(buf);
514 BIO_free(ssl);
515 return (NULL);
516}
517
518BIO *
519BIO_new_ssl_connect(SSL_CTX *ctx)
520{
521 BIO *ret = NULL, *con = NULL, *ssl = NULL;
522
523 if ((con = BIO_new(BIO_s_connect())) == NULL)
524 goto err;
525 if ((ssl = BIO_new_ssl(ctx, 1)) == NULL)
526 goto err;
527 if ((ret = BIO_push(ssl, con)) == NULL)
528 goto err;
529 return (ret);
530
531 err:
532 BIO_free(con);
533 BIO_free(ssl);
534 return (NULL);
535}
536LSSL_ALIAS(BIO_new_ssl_connect);
537
538BIO *
539BIO_new_ssl(SSL_CTX *ctx, int client)
540{
541 BIO *ret;
542 SSL *ssl;
543
544 if ((ret = BIO_new(BIO_f_ssl())) == NULL)
545 goto err;
546 if ((ssl = SSL_new(ctx)) == NULL)
547 goto err;
548
549 if (client)
550 SSL_set_connect_state(ssl);
551 else
552 SSL_set_accept_state(ssl);
553
554 BIO_set_ssl(ret, ssl, BIO_CLOSE);
555 return (ret);
556
557 err:
558 BIO_free(ret);
559 return (NULL);
560}
561LSSL_ALIAS(BIO_new_ssl);
562
563int
564BIO_ssl_copy_session_id(BIO *t, BIO *f)
565{
566 t = BIO_find_type(t, BIO_TYPE_SSL);
567 f = BIO_find_type(f, BIO_TYPE_SSL);
568 if ((t == NULL) || (f == NULL))
569 return (0);
570 if ((((BIO_SSL *)t->ptr)->ssl == NULL) ||
571 (((BIO_SSL *)f->ptr)->ssl == NULL))
572 return (0);
573 if (!SSL_copy_session_id(((BIO_SSL *)t->ptr)->ssl,
574 ((BIO_SSL *)f->ptr)->ssl))
575 return (0);
576 return (1);
577}
578
579void
580BIO_ssl_shutdown(BIO *b)
581{
582 SSL *s;
583
584 while (b != NULL) {
585 if (b->method->type == BIO_TYPE_SSL) {
586 s = ((BIO_SSL *)b->ptr)->ssl;
587 SSL_shutdown(s);
588 break;
589 }
590 b = b->next_bio;
591 }
592}
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