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1 | /* | |
2 | * ! \file ssl/ssl_lib.c \brief Version independent SSL functions. | |
3 | */ | |
4 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
5 | * All rights reserved. | |
6 | * | |
7 | * This package is an SSL implementation written | |
8 | * by Eric Young (eay@cryptsoft.com). | |
9 | * The implementation was written so as to conform with Netscapes SSL. | |
10 | * | |
11 | * This library is free for commercial and non-commercial use as long as | |
12 | * the following conditions are aheared to. The following conditions | |
13 | * apply to all code found in this distribution, be it the RC4, RSA, | |
14 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
15 | * included with this distribution is covered by the same copyright terms | |
16 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
17 | * | |
18 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
19 | * the code are not to be removed. | |
20 | * If this package is used in a product, Eric Young should be given attribution | |
21 | * as the author of the parts of the library used. | |
22 | * This can be in the form of a textual message at program startup or | |
23 | * in documentation (online or textual) provided with the package. | |
24 | * | |
25 | * Redistribution and use in source and binary forms, with or without | |
26 | * modification, are permitted provided that the following conditions | |
27 | * are met: | |
28 | * 1. Redistributions of source code must retain the copyright | |
29 | * notice, this list of conditions and the following disclaimer. | |
30 | * 2. Redistributions in binary form must reproduce the above copyright | |
31 | * notice, this list of conditions and the following disclaimer in the | |
32 | * documentation and/or other materials provided with the distribution. | |
33 | * 3. All advertising materials mentioning features or use of this software | |
34 | * must display the following acknowledgement: | |
35 | * "This product includes cryptographic software written by | |
36 | * Eric Young (eay@cryptsoft.com)" | |
37 | * The word 'cryptographic' can be left out if the rouines from the library | |
38 | * being used are not cryptographic related :-). | |
39 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
40 | * the apps directory (application code) you must include an acknowledgement: | |
41 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
42 | * | |
43 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
44 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
45 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
46 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
47 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
48 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
49 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
50 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
51 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
52 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
53 | * SUCH DAMAGE. | |
54 | * | |
55 | * The licence and distribution terms for any publically available version or | |
56 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
57 | * copied and put under another distribution licence | |
58 | * [including the GNU Public Licence.] | |
59 | */ | |
60 | /* ==================================================================== | |
61 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. | |
62 | * | |
63 | * Redistribution and use in source and binary forms, with or without | |
64 | * modification, are permitted provided that the following conditions | |
65 | * are met: | |
66 | * | |
67 | * 1. Redistributions of source code must retain the above copyright | |
68 | * notice, this list of conditions and the following disclaimer. | |
69 | * | |
70 | * 2. Redistributions in binary form must reproduce the above copyright | |
71 | * notice, this list of conditions and the following disclaimer in | |
72 | * the documentation and/or other materials provided with the | |
73 | * distribution. | |
74 | * | |
75 | * 3. All advertising materials mentioning features or use of this | |
76 | * software must display the following acknowledgment: | |
77 | * "This product includes software developed by the OpenSSL Project | |
78 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
79 | * | |
80 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
81 | * endorse or promote products derived from this software without | |
82 | * prior written permission. For written permission, please contact | |
83 | * openssl-core@openssl.org. | |
84 | * | |
85 | * 5. Products derived from this software may not be called "OpenSSL" | |
86 | * nor may "OpenSSL" appear in their names without prior written | |
87 | * permission of the OpenSSL Project. | |
88 | * | |
89 | * 6. Redistributions of any form whatsoever must retain the following | |
90 | * acknowledgment: | |
91 | * "This product includes software developed by the OpenSSL Project | |
92 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
93 | * | |
94 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
95 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
96 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
97 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
98 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
99 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
100 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
101 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
102 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
103 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
104 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
105 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
106 | * ==================================================================== | |
107 | * | |
108 | * This product includes cryptographic software written by Eric Young | |
109 | * (eay@cryptsoft.com). This product includes software written by Tim | |
110 | * Hudson (tjh@cryptsoft.com). | |
111 | * | |
112 | */ | |
113 | /* ==================================================================== | |
114 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
115 | * ECC cipher suite support in OpenSSL originally developed by | |
116 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. | |
117 | */ | |
118 | /* ==================================================================== | |
119 | * Copyright 2005 Nokia. All rights reserved. | |
120 | * | |
121 | * The portions of the attached software ("Contribution") is developed by | |
122 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
123 | * license. | |
124 | * | |
125 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
126 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
127 | * support (see RFC 4279) to OpenSSL. | |
128 | * | |
129 | * No patent licenses or other rights except those expressly stated in | |
130 | * the OpenSSL open source license shall be deemed granted or received | |
131 | * expressly, by implication, estoppel, or otherwise. | |
132 | * | |
133 | * No assurances are provided by Nokia that the Contribution does not | |
134 | * infringe the patent or other intellectual property rights of any third | |
135 | * party or that the license provides you with all the necessary rights | |
136 | * to make use of the Contribution. | |
137 | * | |
138 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
139 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
140 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
141 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
142 | * OTHERWISE. | |
143 | */ | |
144 | ||
145 | #ifdef REF_CHECK | |
146 | # include <assert.h> | |
147 | #endif | |
148 | #include <stdio.h> | |
149 | #include "ssl_locl.h" | |
150 | #include <openssl/objects.h> | |
151 | #include <openssl/lhash.h> | |
152 | #include <openssl/x509v3.h> | |
153 | #include <openssl/rand.h> | |
154 | #include <openssl/ocsp.h> | |
155 | #ifndef OPENSSL_NO_DH | |
156 | # include <openssl/dh.h> | |
157 | #endif | |
158 | #ifndef OPENSSL_NO_ENGINE | |
159 | # include <openssl/engine.h> | |
160 | #endif | |
161 | ||
162 | const char *SSL_version_str = OPENSSL_VERSION_TEXT; | |
163 | ||
164 | SSL3_ENC_METHOD ssl3_undef_enc_method = { | |
165 | /* | |
166 | * evil casts, but these functions are only called if there's a library | |
167 | * bug | |
168 | */ | |
169 | (int (*)(SSL *, int))ssl_undefined_function, | |
170 | (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, | |
171 | ssl_undefined_function, | |
172 | (int (*)(SSL *, unsigned char *, unsigned char *, int)) | |
173 | ssl_undefined_function, | |
174 | (int (*)(SSL *, int))ssl_undefined_function, | |
175 | (int (*)(SSL *, const char *, int, unsigned char *)) | |
176 | ssl_undefined_function, | |
177 | 0, /* finish_mac_length */ | |
178 | (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, | |
179 | NULL, /* client_finished_label */ | |
180 | 0, /* client_finished_label_len */ | |
181 | NULL, /* server_finished_label */ | |
182 | 0, /* server_finished_label_len */ | |
183 | (int (*)(int))ssl_undefined_function, | |
184 | (int (*)(SSL *, unsigned char *, size_t, const char *, | |
185 | size_t, const unsigned char *, size_t, | |
186 | int use_context))ssl_undefined_function, | |
187 | }; | |
188 | ||
189 | int SSL_clear(SSL *s) | |
190 | { | |
191 | if (s->method == NULL) { | |
192 | SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); | |
193 | return (0); | |
194 | } | |
195 | ||
196 | if (ssl_clear_bad_session(s)) { | |
197 | SSL_SESSION_free(s->session); | |
198 | s->session = NULL; | |
199 | } | |
200 | ||
201 | s->error = 0; | |
202 | s->hit = 0; | |
203 | s->shutdown = 0; | |
204 | ||
205 | if (s->renegotiate) { | |
206 | SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); | |
207 | return 0; | |
208 | } | |
209 | ||
210 | s->type = 0; | |
211 | ||
212 | s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); | |
213 | ||
214 | s->version = s->method->version; | |
215 | s->client_version = s->version; | |
216 | s->rwstate = SSL_NOTHING; | |
217 | ||
218 | BUF_MEM_free(s->init_buf); | |
219 | s->init_buf = NULL; | |
220 | ssl_clear_cipher_ctx(s); | |
221 | ssl_clear_hash_ctx(&s->read_hash); | |
222 | ssl_clear_hash_ctx(&s->write_hash); | |
223 | s->first_packet = 0; | |
224 | ||
225 | /* | |
226 | * Check to see if we were changed into a different method, if so, revert | |
227 | * back if we are not doing session-id reuse. | |
228 | */ | |
229 | if (!s->in_handshake && (s->session == NULL) | |
230 | && (s->method != s->ctx->method)) { | |
231 | s->method->ssl_free(s); | |
232 | s->method = s->ctx->method; | |
233 | if (!s->method->ssl_new(s)) | |
234 | return (0); | |
235 | } else | |
236 | s->method->ssl_clear(s); | |
237 | ||
238 | RECORD_LAYER_clear(&s->rlayer); | |
239 | ||
240 | return (1); | |
241 | } | |
242 | ||
243 | /** Used to change an SSL_CTXs default SSL method type */ | |
244 | int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) | |
245 | { | |
246 | STACK_OF(SSL_CIPHER) *sk; | |
247 | ||
248 | ctx->method = meth; | |
249 | ||
250 | sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), | |
251 | &(ctx->cipher_list_by_id), | |
252 | SSL_DEFAULT_CIPHER_LIST, ctx->cert); | |
253 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { | |
254 | SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, | |
255 | SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); | |
256 | return (0); | |
257 | } | |
258 | return (1); | |
259 | } | |
260 | ||
261 | SSL *SSL_new(SSL_CTX *ctx) | |
262 | { | |
263 | SSL *s; | |
264 | ||
265 | if (ctx == NULL) { | |
266 | SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); | |
267 | return (NULL); | |
268 | } | |
269 | if (ctx->method == NULL) { | |
270 | SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); | |
271 | return (NULL); | |
272 | } | |
273 | ||
274 | s = OPENSSL_malloc(sizeof(*s)); | |
275 | if (s == NULL) | |
276 | goto err; | |
277 | memset(s, 0, sizeof(*s)); | |
278 | ||
279 | RECORD_LAYER_init(&s->rlayer, s); | |
280 | ||
281 | s->options = ctx->options; | |
282 | s->mode = ctx->mode; | |
283 | s->max_cert_list = ctx->max_cert_list; | |
284 | ||
285 | /* | |
286 | * Earlier library versions used to copy the pointer to the CERT, not | |
287 | * its contents; only when setting new parameters for the per-SSL | |
288 | * copy, ssl_cert_new would be called (and the direct reference to | |
289 | * the per-SSL_CTX settings would be lost, but those still were | |
290 | * indirectly accessed for various purposes, and for that reason they | |
291 | * used to be known as s->ctx->default_cert). Now we don't look at the | |
292 | * SSL_CTX's CERT after having duplicated it once. | |
293 | */ | |
294 | s->cert = ssl_cert_dup(ctx->cert); | |
295 | if (s->cert == NULL) | |
296 | goto err; | |
297 | ||
298 | RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead); | |
299 | s->msg_callback = ctx->msg_callback; | |
300 | s->msg_callback_arg = ctx->msg_callback_arg; | |
301 | s->verify_mode = ctx->verify_mode; | |
302 | s->not_resumable_session_cb = ctx->not_resumable_session_cb; | |
303 | s->sid_ctx_length = ctx->sid_ctx_length; | |
304 | OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); | |
305 | memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); | |
306 | s->verify_callback = ctx->default_verify_callback; | |
307 | s->generate_session_id = ctx->generate_session_id; | |
308 | ||
309 | s->param = X509_VERIFY_PARAM_new(); | |
310 | if (!s->param) | |
311 | goto err; | |
312 | X509_VERIFY_PARAM_inherit(s->param, ctx->param); | |
313 | s->quiet_shutdown = ctx->quiet_shutdown; | |
314 | s->max_send_fragment = ctx->max_send_fragment; | |
315 | ||
316 | CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); | |
317 | s->ctx = ctx; | |
318 | #ifndef OPENSSL_NO_TLSEXT | |
319 | s->tlsext_debug_cb = 0; | |
320 | s->tlsext_debug_arg = NULL; | |
321 | s->tlsext_ticket_expected = 0; | |
322 | s->tlsext_status_type = -1; | |
323 | s->tlsext_status_expected = 0; | |
324 | s->tlsext_ocsp_ids = NULL; | |
325 | s->tlsext_ocsp_exts = NULL; | |
326 | s->tlsext_ocsp_resp = NULL; | |
327 | s->tlsext_ocsp_resplen = -1; | |
328 | CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); | |
329 | s->initial_ctx = ctx; | |
330 | # ifndef OPENSSL_NO_EC | |
331 | if (ctx->tlsext_ecpointformatlist) { | |
332 | s->tlsext_ecpointformatlist = | |
333 | BUF_memdup(ctx->tlsext_ecpointformatlist, | |
334 | ctx->tlsext_ecpointformatlist_length); | |
335 | if (!s->tlsext_ecpointformatlist) | |
336 | goto err; | |
337 | s->tlsext_ecpointformatlist_length = | |
338 | ctx->tlsext_ecpointformatlist_length; | |
339 | } | |
340 | if (ctx->tlsext_ellipticcurvelist) { | |
341 | s->tlsext_ellipticcurvelist = | |
342 | BUF_memdup(ctx->tlsext_ellipticcurvelist, | |
343 | ctx->tlsext_ellipticcurvelist_length); | |
344 | if (!s->tlsext_ellipticcurvelist) | |
345 | goto err; | |
346 | s->tlsext_ellipticcurvelist_length = | |
347 | ctx->tlsext_ellipticcurvelist_length; | |
348 | } | |
349 | # endif | |
350 | # ifndef OPENSSL_NO_NEXTPROTONEG | |
351 | s->next_proto_negotiated = NULL; | |
352 | # endif | |
353 | ||
354 | if (s->ctx->alpn_client_proto_list) { | |
355 | s->alpn_client_proto_list = | |
356 | OPENSSL_malloc(s->ctx->alpn_client_proto_list_len); | |
357 | if (s->alpn_client_proto_list == NULL) | |
358 | goto err; | |
359 | memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list, | |
360 | s->ctx->alpn_client_proto_list_len); | |
361 | s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len; | |
362 | } | |
363 | #endif | |
364 | ||
365 | s->verify_result = X509_V_OK; | |
366 | ||
367 | s->method = ctx->method; | |
368 | ||
369 | if (!s->method->ssl_new(s)) | |
370 | goto err; | |
371 | ||
372 | s->references = 1; | |
373 | s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; | |
374 | ||
375 | if (!SSL_clear(s)) | |
376 | goto err; | |
377 | ||
378 | CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); | |
379 | ||
380 | #ifndef OPENSSL_NO_PSK | |
381 | s->psk_client_callback = ctx->psk_client_callback; | |
382 | s->psk_server_callback = ctx->psk_server_callback; | |
383 | #endif | |
384 | ||
385 | return (s); | |
386 | err: | |
387 | SSL_free(s); | |
388 | SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); | |
389 | return (NULL); | |
390 | } | |
391 | ||
392 | int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, | |
393 | unsigned int sid_ctx_len) | |
394 | { | |
395 | if (sid_ctx_len > sizeof ctx->sid_ctx) { | |
396 | SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, | |
397 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
398 | return 0; | |
399 | } | |
400 | ctx->sid_ctx_length = sid_ctx_len; | |
401 | memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); | |
402 | ||
403 | return 1; | |
404 | } | |
405 | ||
406 | int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, | |
407 | unsigned int sid_ctx_len) | |
408 | { | |
409 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
410 | SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, | |
411 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
412 | return 0; | |
413 | } | |
414 | ssl->sid_ctx_length = sid_ctx_len; | |
415 | memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); | |
416 | ||
417 | return 1; | |
418 | } | |
419 | ||
420 | int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) | |
421 | { | |
422 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
423 | ctx->generate_session_id = cb; | |
424 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
425 | return 1; | |
426 | } | |
427 | ||
428 | int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) | |
429 | { | |
430 | CRYPTO_w_lock(CRYPTO_LOCK_SSL); | |
431 | ssl->generate_session_id = cb; | |
432 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL); | |
433 | return 1; | |
434 | } | |
435 | ||
436 | int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, | |
437 | unsigned int id_len) | |
438 | { | |
439 | /* | |
440 | * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how | |
441 | * we can "construct" a session to give us the desired check - ie. to | |
442 | * find if there's a session in the hash table that would conflict with | |
443 | * any new session built out of this id/id_len and the ssl_version in use | |
444 | * by this SSL. | |
445 | */ | |
446 | SSL_SESSION r, *p; | |
447 | ||
448 | if (id_len > sizeof r.session_id) | |
449 | return 0; | |
450 | ||
451 | r.ssl_version = ssl->version; | |
452 | r.session_id_length = id_len; | |
453 | memcpy(r.session_id, id, id_len); | |
454 | ||
455 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); | |
456 | p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); | |
457 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); | |
458 | return (p != NULL); | |
459 | } | |
460 | ||
461 | int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) | |
462 | { | |
463 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
464 | } | |
465 | ||
466 | int SSL_set_purpose(SSL *s, int purpose) | |
467 | { | |
468 | return X509_VERIFY_PARAM_set_purpose(s->param, purpose); | |
469 | } | |
470 | ||
471 | int SSL_CTX_set_trust(SSL_CTX *s, int trust) | |
472 | { | |
473 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
474 | } | |
475 | ||
476 | int SSL_set_trust(SSL *s, int trust) | |
477 | { | |
478 | return X509_VERIFY_PARAM_set_trust(s->param, trust); | |
479 | } | |
480 | ||
481 | int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) | |
482 | { | |
483 | return X509_VERIFY_PARAM_set1(ctx->param, vpm); | |
484 | } | |
485 | ||
486 | int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) | |
487 | { | |
488 | return X509_VERIFY_PARAM_set1(ssl->param, vpm); | |
489 | } | |
490 | ||
491 | X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) | |
492 | { | |
493 | return ctx->param; | |
494 | } | |
495 | ||
496 | X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) | |
497 | { | |
498 | return ssl->param; | |
499 | } | |
500 | ||
501 | void SSL_certs_clear(SSL *s) | |
502 | { | |
503 | ssl_cert_clear_certs(s->cert); | |
504 | } | |
505 | ||
506 | void SSL_free(SSL *s) | |
507 | { | |
508 | int i; | |
509 | ||
510 | if (s == NULL) | |
511 | return; | |
512 | ||
513 | i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); | |
514 | #ifdef REF_PRINT | |
515 | REF_PRINT("SSL", s); | |
516 | #endif | |
517 | if (i > 0) | |
518 | return; | |
519 | #ifdef REF_CHECK | |
520 | if (i < 0) { | |
521 | fprintf(stderr, "SSL_free, bad reference count\n"); | |
522 | abort(); /* ok */ | |
523 | } | |
524 | #endif | |
525 | ||
526 | X509_VERIFY_PARAM_free(s->param); | |
527 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); | |
528 | ||
529 | if (s->bbio != NULL) { | |
530 | /* If the buffering BIO is in place, pop it off */ | |
531 | if (s->bbio == s->wbio) { | |
532 | s->wbio = BIO_pop(s->wbio); | |
533 | } | |
534 | BIO_free(s->bbio); | |
535 | s->bbio = NULL; | |
536 | } | |
537 | BIO_free_all(s->rbio); | |
538 | if (s->wbio != s->rbio) | |
539 | BIO_free_all(s->wbio); | |
540 | ||
541 | BUF_MEM_free(s->init_buf); | |
542 | ||
543 | /* add extra stuff */ | |
544 | sk_SSL_CIPHER_free(s->cipher_list); | |
545 | sk_SSL_CIPHER_free(s->cipher_list_by_id); | |
546 | ||
547 | /* Make the next call work :-) */ | |
548 | if (s->session != NULL) { | |
549 | ssl_clear_bad_session(s); | |
550 | SSL_SESSION_free(s->session); | |
551 | } | |
552 | ||
553 | ssl_clear_cipher_ctx(s); | |
554 | ssl_clear_hash_ctx(&s->read_hash); | |
555 | ssl_clear_hash_ctx(&s->write_hash); | |
556 | ||
557 | ssl_cert_free(s->cert); | |
558 | /* Free up if allocated */ | |
559 | ||
560 | #ifndef OPENSSL_NO_TLSEXT | |
561 | OPENSSL_free(s->tlsext_hostname); | |
562 | SSL_CTX_free(s->initial_ctx); | |
563 | # ifndef OPENSSL_NO_EC | |
564 | OPENSSL_free(s->tlsext_ecpointformatlist); | |
565 | OPENSSL_free(s->tlsext_ellipticcurvelist); | |
566 | # endif /* OPENSSL_NO_EC */ | |
567 | sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free); | |
568 | sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); | |
569 | OPENSSL_free(s->tlsext_ocsp_resp); | |
570 | OPENSSL_free(s->alpn_client_proto_list); | |
571 | #endif | |
572 | ||
573 | sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); | |
574 | ||
575 | if (s->method != NULL) | |
576 | s->method->ssl_free(s); | |
577 | ||
578 | RECORD_LAYER_release(&s->rlayer); | |
579 | ||
580 | SSL_CTX_free(s->ctx); | |
581 | ||
582 | #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) | |
583 | OPENSSL_free(s->next_proto_negotiated); | |
584 | #endif | |
585 | ||
586 | #ifndef OPENSSL_NO_SRTP | |
587 | sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); | |
588 | #endif | |
589 | ||
590 | OPENSSL_free(s); | |
591 | } | |
592 | ||
593 | void SSL_set_rbio(SSL *s, BIO *rbio) | |
594 | { | |
595 | if (s->rbio != rbio) | |
596 | BIO_free_all(s->rbio); | |
597 | s->rbio = rbio; | |
598 | } | |
599 | ||
600 | void SSL_set_wbio(SSL *s, BIO *wbio) | |
601 | { | |
602 | /* | |
603 | * If the output buffering BIO is still in place, remove it | |
604 | */ | |
605 | if (s->bbio != NULL) { | |
606 | if (s->wbio == s->bbio) { | |
607 | s->wbio = s->wbio->next_bio; | |
608 | s->bbio->next_bio = NULL; | |
609 | } | |
610 | } | |
611 | if (s->wbio != wbio && s->rbio != s->wbio) | |
612 | BIO_free_all(s->wbio); | |
613 | s->wbio = wbio; | |
614 | } | |
615 | ||
616 | void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) | |
617 | { | |
618 | SSL_set_wbio(s, wbio); | |
619 | SSL_set_rbio(s, rbio); | |
620 | } | |
621 | ||
622 | BIO *SSL_get_rbio(const SSL *s) | |
623 | { | |
624 | return (s->rbio); | |
625 | } | |
626 | ||
627 | BIO *SSL_get_wbio(const SSL *s) | |
628 | { | |
629 | return (s->wbio); | |
630 | } | |
631 | ||
632 | int SSL_get_fd(const SSL *s) | |
633 | { | |
634 | return (SSL_get_rfd(s)); | |
635 | } | |
636 | ||
637 | int SSL_get_rfd(const SSL *s) | |
638 | { | |
639 | int ret = -1; | |
640 | BIO *b, *r; | |
641 | ||
642 | b = SSL_get_rbio(s); | |
643 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
644 | if (r != NULL) | |
645 | BIO_get_fd(r, &ret); | |
646 | return (ret); | |
647 | } | |
648 | ||
649 | int SSL_get_wfd(const SSL *s) | |
650 | { | |
651 | int ret = -1; | |
652 | BIO *b, *r; | |
653 | ||
654 | b = SSL_get_wbio(s); | |
655 | r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); | |
656 | if (r != NULL) | |
657 | BIO_get_fd(r, &ret); | |
658 | return (ret); | |
659 | } | |
660 | ||
661 | #ifndef OPENSSL_NO_SOCK | |
662 | int SSL_set_fd(SSL *s, int fd) | |
663 | { | |
664 | int ret = 0; | |
665 | BIO *bio = NULL; | |
666 | ||
667 | bio = BIO_new(BIO_s_socket()); | |
668 | ||
669 | if (bio == NULL) { | |
670 | SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); | |
671 | goto err; | |
672 | } | |
673 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
674 | SSL_set_bio(s, bio, bio); | |
675 | ret = 1; | |
676 | err: | |
677 | return (ret); | |
678 | } | |
679 | ||
680 | int SSL_set_wfd(SSL *s, int fd) | |
681 | { | |
682 | int ret = 0; | |
683 | BIO *bio = NULL; | |
684 | ||
685 | if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) | |
686 | || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { | |
687 | bio = BIO_new(BIO_s_socket()); | |
688 | ||
689 | if (bio == NULL) { | |
690 | SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); | |
691 | goto err; | |
692 | } | |
693 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
694 | SSL_set_bio(s, SSL_get_rbio(s), bio); | |
695 | } else | |
696 | SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); | |
697 | ret = 1; | |
698 | err: | |
699 | return (ret); | |
700 | } | |
701 | ||
702 | int SSL_set_rfd(SSL *s, int fd) | |
703 | { | |
704 | int ret = 0; | |
705 | BIO *bio = NULL; | |
706 | ||
707 | if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) | |
708 | || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { | |
709 | bio = BIO_new(BIO_s_socket()); | |
710 | ||
711 | if (bio == NULL) { | |
712 | SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); | |
713 | goto err; | |
714 | } | |
715 | BIO_set_fd(bio, fd, BIO_NOCLOSE); | |
716 | SSL_set_bio(s, bio, SSL_get_wbio(s)); | |
717 | } else | |
718 | SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); | |
719 | ret = 1; | |
720 | err: | |
721 | return (ret); | |
722 | } | |
723 | #endif | |
724 | ||
725 | /* return length of latest Finished message we sent, copy to 'buf' */ | |
726 | size_t SSL_get_finished(const SSL *s, void *buf, size_t count) | |
727 | { | |
728 | size_t ret = 0; | |
729 | ||
730 | if (s->s3 != NULL) { | |
731 | ret = s->s3->tmp.finish_md_len; | |
732 | if (count > ret) | |
733 | count = ret; | |
734 | memcpy(buf, s->s3->tmp.finish_md, count); | |
735 | } | |
736 | return ret; | |
737 | } | |
738 | ||
739 | /* return length of latest Finished message we expected, copy to 'buf' */ | |
740 | size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) | |
741 | { | |
742 | size_t ret = 0; | |
743 | ||
744 | if (s->s3 != NULL) { | |
745 | ret = s->s3->tmp.peer_finish_md_len; | |
746 | if (count > ret) | |
747 | count = ret; | |
748 | memcpy(buf, s->s3->tmp.peer_finish_md, count); | |
749 | } | |
750 | return ret; | |
751 | } | |
752 | ||
753 | int SSL_get_verify_mode(const SSL *s) | |
754 | { | |
755 | return (s->verify_mode); | |
756 | } | |
757 | ||
758 | int SSL_get_verify_depth(const SSL *s) | |
759 | { | |
760 | return X509_VERIFY_PARAM_get_depth(s->param); | |
761 | } | |
762 | ||
763 | int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { | |
764 | return (s->verify_callback); | |
765 | } | |
766 | ||
767 | int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) | |
768 | { | |
769 | return (ctx->verify_mode); | |
770 | } | |
771 | ||
772 | int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) | |
773 | { | |
774 | return X509_VERIFY_PARAM_get_depth(ctx->param); | |
775 | } | |
776 | ||
777 | int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { | |
778 | return (ctx->default_verify_callback); | |
779 | } | |
780 | ||
781 | void SSL_set_verify(SSL *s, int mode, | |
782 | int (*callback) (int ok, X509_STORE_CTX *ctx)) | |
783 | { | |
784 | s->verify_mode = mode; | |
785 | if (callback != NULL) | |
786 | s->verify_callback = callback; | |
787 | } | |
788 | ||
789 | void SSL_set_verify_depth(SSL *s, int depth) | |
790 | { | |
791 | X509_VERIFY_PARAM_set_depth(s->param, depth); | |
792 | } | |
793 | ||
794 | void SSL_set_read_ahead(SSL *s, int yes) | |
795 | { | |
796 | RECORD_LAYER_set_read_ahead(&s->rlayer, yes); | |
797 | } | |
798 | ||
799 | int SSL_get_read_ahead(const SSL *s) | |
800 | { | |
801 | return RECORD_LAYER_get_read_ahead(&s->rlayer); | |
802 | } | |
803 | ||
804 | int SSL_pending(const SSL *s) | |
805 | { | |
806 | /* | |
807 | * SSL_pending cannot work properly if read-ahead is enabled | |
808 | * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is | |
809 | * impossible to fix since SSL_pending cannot report errors that may be | |
810 | * observed while scanning the new data. (Note that SSL_pending() is | |
811 | * often used as a boolean value, so we'd better not return -1.) | |
812 | */ | |
813 | return (s->method->ssl_pending(s)); | |
814 | } | |
815 | ||
816 | X509 *SSL_get_peer_certificate(const SSL *s) | |
817 | { | |
818 | X509 *r; | |
819 | ||
820 | if ((s == NULL) || (s->session == NULL)) | |
821 | r = NULL; | |
822 | else | |
823 | r = s->session->peer; | |
824 | ||
825 | if (r == NULL) | |
826 | return (r); | |
827 | ||
828 | CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); | |
829 | ||
830 | return (r); | |
831 | } | |
832 | ||
833 | STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) | |
834 | { | |
835 | STACK_OF(X509) *r; | |
836 | ||
837 | if ((s == NULL) || (s->session == NULL) | |
838 | || (s->session->sess_cert == NULL)) | |
839 | r = NULL; | |
840 | else | |
841 | r = s->session->sess_cert->cert_chain; | |
842 | ||
843 | /* | |
844 | * If we are a client, cert_chain includes the peer's own certificate; if | |
845 | * we are a server, it does not. | |
846 | */ | |
847 | ||
848 | return (r); | |
849 | } | |
850 | ||
851 | /* | |
852 | * Now in theory, since the calling process own 't' it should be safe to | |
853 | * modify. We need to be able to read f without being hassled | |
854 | */ | |
855 | int SSL_copy_session_id(SSL *t, const SSL *f) | |
856 | { | |
857 | /* Do we need to to SSL locking? */ | |
858 | if (!SSL_set_session(t, SSL_get_session(f))) { | |
859 | return 0; | |
860 | } | |
861 | ||
862 | /* | |
863 | * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa | |
864 | */ | |
865 | if (t->method != f->method) { | |
866 | t->method->ssl_free(t); /* cleanup current */ | |
867 | t->method = f->method; /* change method */ | |
868 | t->method->ssl_new(t); /* setup new */ | |
869 | } | |
870 | ||
871 | CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); | |
872 | ssl_cert_free(t->cert); | |
873 | t->cert = f->cert; | |
874 | if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) { | |
875 | return 0; | |
876 | } | |
877 | ||
878 | return 1; | |
879 | } | |
880 | ||
881 | /* Fix this so it checks all the valid key/cert options */ | |
882 | int SSL_CTX_check_private_key(const SSL_CTX *ctx) | |
883 | { | |
884 | if ((ctx == NULL) || | |
885 | (ctx->cert->key->x509 == NULL)) { | |
886 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, | |
887 | SSL_R_NO_CERTIFICATE_ASSIGNED); | |
888 | return (0); | |
889 | } | |
890 | if (ctx->cert->key->privatekey == NULL) { | |
891 | SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, | |
892 | SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
893 | return (0); | |
894 | } | |
895 | return (X509_check_private_key | |
896 | (ctx->cert->key->x509, ctx->cert->key->privatekey)); | |
897 | } | |
898 | ||
899 | /* Fix this function so that it takes an optional type parameter */ | |
900 | int SSL_check_private_key(const SSL *ssl) | |
901 | { | |
902 | if (ssl == NULL) { | |
903 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); | |
904 | return (0); | |
905 | } | |
906 | if (ssl->cert->key->x509 == NULL) { | |
907 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); | |
908 | return (0); | |
909 | } | |
910 | if (ssl->cert->key->privatekey == NULL) { | |
911 | SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); | |
912 | return (0); | |
913 | } | |
914 | return (X509_check_private_key(ssl->cert->key->x509, | |
915 | ssl->cert->key->privatekey)); | |
916 | } | |
917 | ||
918 | int SSL_accept(SSL *s) | |
919 | { | |
920 | if (s->handshake_func == 0) | |
921 | /* Not properly initialized yet */ | |
922 | SSL_set_accept_state(s); | |
923 | ||
924 | return (s->method->ssl_accept(s)); | |
925 | } | |
926 | ||
927 | int SSL_connect(SSL *s) | |
928 | { | |
929 | if (s->handshake_func == 0) | |
930 | /* Not properly initialized yet */ | |
931 | SSL_set_connect_state(s); | |
932 | ||
933 | return (s->method->ssl_connect(s)); | |
934 | } | |
935 | ||
936 | long SSL_get_default_timeout(const SSL *s) | |
937 | { | |
938 | return (s->method->get_timeout()); | |
939 | } | |
940 | ||
941 | int SSL_read(SSL *s, void *buf, int num) | |
942 | { | |
943 | if (s->handshake_func == 0) { | |
944 | SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); | |
945 | return -1; | |
946 | } | |
947 | ||
948 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
949 | s->rwstate = SSL_NOTHING; | |
950 | return (0); | |
951 | } | |
952 | return (s->method->ssl_read(s, buf, num)); | |
953 | } | |
954 | ||
955 | int SSL_peek(SSL *s, void *buf, int num) | |
956 | { | |
957 | if (s->handshake_func == 0) { | |
958 | SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); | |
959 | return -1; | |
960 | } | |
961 | ||
962 | if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { | |
963 | return (0); | |
964 | } | |
965 | return (s->method->ssl_peek(s, buf, num)); | |
966 | } | |
967 | ||
968 | int SSL_write(SSL *s, const void *buf, int num) | |
969 | { | |
970 | if (s->handshake_func == 0) { | |
971 | SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); | |
972 | return -1; | |
973 | } | |
974 | ||
975 | if (s->shutdown & SSL_SENT_SHUTDOWN) { | |
976 | s->rwstate = SSL_NOTHING; | |
977 | SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); | |
978 | return (-1); | |
979 | } | |
980 | return (s->method->ssl_write(s, buf, num)); | |
981 | } | |
982 | ||
983 | int SSL_shutdown(SSL *s) | |
984 | { | |
985 | /* | |
986 | * Note that this function behaves differently from what one might | |
987 | * expect. Return values are 0 for no success (yet), 1 for success; but | |
988 | * calling it once is usually not enough, even if blocking I/O is used | |
989 | * (see ssl3_shutdown). | |
990 | */ | |
991 | ||
992 | if (s->handshake_func == 0) { | |
993 | SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); | |
994 | return -1; | |
995 | } | |
996 | ||
997 | if ((s != NULL) && !SSL_in_init(s)) | |
998 | return (s->method->ssl_shutdown(s)); | |
999 | else | |
1000 | return (1); | |
1001 | } | |
1002 | ||
1003 | int SSL_renegotiate(SSL *s) | |
1004 | { | |
1005 | if (s->renegotiate == 0) | |
1006 | s->renegotiate = 1; | |
1007 | ||
1008 | s->new_session = 1; | |
1009 | ||
1010 | return (s->method->ssl_renegotiate(s)); | |
1011 | } | |
1012 | ||
1013 | int SSL_renegotiate_abbreviated(SSL *s) | |
1014 | { | |
1015 | if (s->renegotiate == 0) | |
1016 | s->renegotiate = 1; | |
1017 | ||
1018 | s->new_session = 0; | |
1019 | ||
1020 | return (s->method->ssl_renegotiate(s)); | |
1021 | } | |
1022 | ||
1023 | int SSL_renegotiate_pending(SSL *s) | |
1024 | { | |
1025 | /* | |
1026 | * becomes true when negotiation is requested; false again once a | |
1027 | * handshake has finished | |
1028 | */ | |
1029 | return (s->renegotiate != 0); | |
1030 | } | |
1031 | ||
1032 | long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) | |
1033 | { | |
1034 | long l; | |
1035 | ||
1036 | switch (cmd) { | |
1037 | case SSL_CTRL_GET_READ_AHEAD: | |
1038 | return (RECORD_LAYER_get_read_ahead(&s->rlayer)); | |
1039 | case SSL_CTRL_SET_READ_AHEAD: | |
1040 | l = RECORD_LAYER_get_read_ahead(&s->rlayer); | |
1041 | RECORD_LAYER_set_read_ahead(&s->rlayer, larg); | |
1042 | return (l); | |
1043 | ||
1044 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
1045 | s->msg_callback_arg = parg; | |
1046 | return 1; | |
1047 | ||
1048 | case SSL_CTRL_OPTIONS: | |
1049 | return (s->options |= larg); | |
1050 | case SSL_CTRL_CLEAR_OPTIONS: | |
1051 | return (s->options &= ~larg); | |
1052 | case SSL_CTRL_MODE: | |
1053 | return (s->mode |= larg); | |
1054 | case SSL_CTRL_CLEAR_MODE: | |
1055 | return (s->mode &= ~larg); | |
1056 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
1057 | return (s->max_cert_list); | |
1058 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
1059 | l = s->max_cert_list; | |
1060 | s->max_cert_list = larg; | |
1061 | return (l); | |
1062 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
1063 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
1064 | return 0; | |
1065 | s->max_send_fragment = larg; | |
1066 | return 1; | |
1067 | case SSL_CTRL_GET_RI_SUPPORT: | |
1068 | if (s->s3) | |
1069 | return s->s3->send_connection_binding; | |
1070 | else | |
1071 | return 0; | |
1072 | case SSL_CTRL_CERT_FLAGS: | |
1073 | return (s->cert->cert_flags |= larg); | |
1074 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
1075 | return (s->cert->cert_flags &= ~larg); | |
1076 | ||
1077 | case SSL_CTRL_GET_RAW_CIPHERLIST: | |
1078 | if (parg) { | |
1079 | if (s->cert->ciphers_raw == NULL) | |
1080 | return 0; | |
1081 | *(unsigned char **)parg = s->cert->ciphers_raw; | |
1082 | return (int)s->cert->ciphers_rawlen; | |
1083 | } else | |
1084 | return ssl_put_cipher_by_char(s, NULL, NULL); | |
1085 | case SSL_CTRL_GET_EXTMS_SUPPORT: | |
1086 | if (!s->session || SSL_in_init(s) || s->in_handshake) | |
1087 | return -1; | |
1088 | if (s->session->flags & SSL_SESS_FLAG_EXTMS) | |
1089 | return 1; | |
1090 | else | |
1091 | return 0; | |
1092 | default: | |
1093 | return (s->method->ssl_ctrl(s, cmd, larg, parg)); | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) | |
1098 | { | |
1099 | switch (cmd) { | |
1100 | case SSL_CTRL_SET_MSG_CALLBACK: | |
1101 | s->msg_callback = (void (*) | |
1102 | (int write_p, int version, int content_type, | |
1103 | const void *buf, size_t len, SSL *ssl, | |
1104 | void *arg))(fp); | |
1105 | return 1; | |
1106 | ||
1107 | default: | |
1108 | return (s->method->ssl_callback_ctrl(s, cmd, fp)); | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) | |
1113 | { | |
1114 | return ctx->sessions; | |
1115 | } | |
1116 | ||
1117 | long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) | |
1118 | { | |
1119 | long l; | |
1120 | /* For some cases with ctx == NULL perform syntax checks */ | |
1121 | if (ctx == NULL) { | |
1122 | switch (cmd) { | |
1123 | #ifndef OPENSSL_NO_EC | |
1124 | case SSL_CTRL_SET_CURVES_LIST: | |
1125 | return tls1_set_curves_list(NULL, NULL, parg); | |
1126 | #endif | |
1127 | case SSL_CTRL_SET_SIGALGS_LIST: | |
1128 | case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: | |
1129 | return tls1_set_sigalgs_list(NULL, parg, 0); | |
1130 | default: | |
1131 | return 0; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | switch (cmd) { | |
1136 | case SSL_CTRL_GET_READ_AHEAD: | |
1137 | return (ctx->read_ahead); | |
1138 | case SSL_CTRL_SET_READ_AHEAD: | |
1139 | l = ctx->read_ahead; | |
1140 | ctx->read_ahead = larg; | |
1141 | return (l); | |
1142 | ||
1143 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
1144 | ctx->msg_callback_arg = parg; | |
1145 | return 1; | |
1146 | ||
1147 | case SSL_CTRL_GET_MAX_CERT_LIST: | |
1148 | return (ctx->max_cert_list); | |
1149 | case SSL_CTRL_SET_MAX_CERT_LIST: | |
1150 | l = ctx->max_cert_list; | |
1151 | ctx->max_cert_list = larg; | |
1152 | return (l); | |
1153 | ||
1154 | case SSL_CTRL_SET_SESS_CACHE_SIZE: | |
1155 | l = ctx->session_cache_size; | |
1156 | ctx->session_cache_size = larg; | |
1157 | return (l); | |
1158 | case SSL_CTRL_GET_SESS_CACHE_SIZE: | |
1159 | return (ctx->session_cache_size); | |
1160 | case SSL_CTRL_SET_SESS_CACHE_MODE: | |
1161 | l = ctx->session_cache_mode; | |
1162 | ctx->session_cache_mode = larg; | |
1163 | return (l); | |
1164 | case SSL_CTRL_GET_SESS_CACHE_MODE: | |
1165 | return (ctx->session_cache_mode); | |
1166 | ||
1167 | case SSL_CTRL_SESS_NUMBER: | |
1168 | return (lh_SSL_SESSION_num_items(ctx->sessions)); | |
1169 | case SSL_CTRL_SESS_CONNECT: | |
1170 | return (ctx->stats.sess_connect); | |
1171 | case SSL_CTRL_SESS_CONNECT_GOOD: | |
1172 | return (ctx->stats.sess_connect_good); | |
1173 | case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: | |
1174 | return (ctx->stats.sess_connect_renegotiate); | |
1175 | case SSL_CTRL_SESS_ACCEPT: | |
1176 | return (ctx->stats.sess_accept); | |
1177 | case SSL_CTRL_SESS_ACCEPT_GOOD: | |
1178 | return (ctx->stats.sess_accept_good); | |
1179 | case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: | |
1180 | return (ctx->stats.sess_accept_renegotiate); | |
1181 | case SSL_CTRL_SESS_HIT: | |
1182 | return (ctx->stats.sess_hit); | |
1183 | case SSL_CTRL_SESS_CB_HIT: | |
1184 | return (ctx->stats.sess_cb_hit); | |
1185 | case SSL_CTRL_SESS_MISSES: | |
1186 | return (ctx->stats.sess_miss); | |
1187 | case SSL_CTRL_SESS_TIMEOUTS: | |
1188 | return (ctx->stats.sess_timeout); | |
1189 | case SSL_CTRL_SESS_CACHE_FULL: | |
1190 | return (ctx->stats.sess_cache_full); | |
1191 | case SSL_CTRL_OPTIONS: | |
1192 | return (ctx->options |= larg); | |
1193 | case SSL_CTRL_CLEAR_OPTIONS: | |
1194 | return (ctx->options &= ~larg); | |
1195 | case SSL_CTRL_MODE: | |
1196 | return (ctx->mode |= larg); | |
1197 | case SSL_CTRL_CLEAR_MODE: | |
1198 | return (ctx->mode &= ~larg); | |
1199 | case SSL_CTRL_SET_MAX_SEND_FRAGMENT: | |
1200 | if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) | |
1201 | return 0; | |
1202 | ctx->max_send_fragment = larg; | |
1203 | return 1; | |
1204 | case SSL_CTRL_CERT_FLAGS: | |
1205 | return (ctx->cert->cert_flags |= larg); | |
1206 | case SSL_CTRL_CLEAR_CERT_FLAGS: | |
1207 | return (ctx->cert->cert_flags &= ~larg); | |
1208 | default: | |
1209 | return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) | |
1214 | { | |
1215 | switch (cmd) { | |
1216 | case SSL_CTRL_SET_MSG_CALLBACK: | |
1217 | ctx->msg_callback = (void (*) | |
1218 | (int write_p, int version, int content_type, | |
1219 | const void *buf, size_t len, SSL *ssl, | |
1220 | void *arg))(fp); | |
1221 | return 1; | |
1222 | ||
1223 | default: | |
1224 | return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) | |
1229 | { | |
1230 | long l; | |
1231 | ||
1232 | l = a->id - b->id; | |
1233 | if (l == 0L) | |
1234 | return (0); | |
1235 | else | |
1236 | return ((l > 0) ? 1 : -1); | |
1237 | } | |
1238 | ||
1239 | int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, | |
1240 | const SSL_CIPHER *const *bp) | |
1241 | { | |
1242 | long l; | |
1243 | ||
1244 | l = (*ap)->id - (*bp)->id; | |
1245 | if (l == 0L) | |
1246 | return (0); | |
1247 | else | |
1248 | return ((l > 0) ? 1 : -1); | |
1249 | } | |
1250 | ||
1251 | /** return a STACK of the ciphers available for the SSL and in order of | |
1252 | * preference */ | |
1253 | STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) | |
1254 | { | |
1255 | if (s != NULL) { | |
1256 | if (s->cipher_list != NULL) { | |
1257 | return (s->cipher_list); | |
1258 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { | |
1259 | return (s->ctx->cipher_list); | |
1260 | } | |
1261 | } | |
1262 | return (NULL); | |
1263 | } | |
1264 | ||
1265 | STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s) | |
1266 | { | |
1267 | STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers; | |
1268 | int i; | |
1269 | ciphers = SSL_get_ciphers(s); | |
1270 | if (!ciphers) | |
1271 | return NULL; | |
1272 | ssl_set_client_disabled(s); | |
1273 | for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { | |
1274 | const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i); | |
1275 | if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) { | |
1276 | if (!sk) | |
1277 | sk = sk_SSL_CIPHER_new_null(); | |
1278 | if (!sk) | |
1279 | return NULL; | |
1280 | if (!sk_SSL_CIPHER_push(sk, c)) { | |
1281 | sk_SSL_CIPHER_free(sk); | |
1282 | return NULL; | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | return sk; | |
1287 | } | |
1288 | ||
1289 | /** return a STACK of the ciphers available for the SSL and in order of | |
1290 | * algorithm id */ | |
1291 | STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) | |
1292 | { | |
1293 | if (s != NULL) { | |
1294 | if (s->cipher_list_by_id != NULL) { | |
1295 | return (s->cipher_list_by_id); | |
1296 | } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { | |
1297 | return (s->ctx->cipher_list_by_id); | |
1298 | } | |
1299 | } | |
1300 | return (NULL); | |
1301 | } | |
1302 | ||
1303 | /** The old interface to get the same thing as SSL_get_ciphers() */ | |
1304 | const char *SSL_get_cipher_list(const SSL *s, int n) | |
1305 | { | |
1306 | SSL_CIPHER *c; | |
1307 | STACK_OF(SSL_CIPHER) *sk; | |
1308 | ||
1309 | if (s == NULL) | |
1310 | return (NULL); | |
1311 | sk = SSL_get_ciphers(s); | |
1312 | if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) | |
1313 | return (NULL); | |
1314 | c = sk_SSL_CIPHER_value(sk, n); | |
1315 | if (c == NULL) | |
1316 | return (NULL); | |
1317 | return (c->name); | |
1318 | } | |
1319 | ||
1320 | /** specify the ciphers to be used by default by the SSL_CTX */ | |
1321 | int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) | |
1322 | { | |
1323 | STACK_OF(SSL_CIPHER) *sk; | |
1324 | ||
1325 | sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, | |
1326 | &ctx->cipher_list_by_id, str, ctx->cert); | |
1327 | /* | |
1328 | * ssl_create_cipher_list may return an empty stack if it was unable to | |
1329 | * find a cipher matching the given rule string (for example if the rule | |
1330 | * string specifies a cipher which has been disabled). This is not an | |
1331 | * error as far as ssl_create_cipher_list is concerned, and hence | |
1332 | * ctx->cipher_list and ctx->cipher_list_by_id has been updated. | |
1333 | */ | |
1334 | if (sk == NULL) | |
1335 | return 0; | |
1336 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
1337 | SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
1338 | return 0; | |
1339 | } | |
1340 | return 1; | |
1341 | } | |
1342 | ||
1343 | /** specify the ciphers to be used by the SSL */ | |
1344 | int SSL_set_cipher_list(SSL *s, const char *str) | |
1345 | { | |
1346 | STACK_OF(SSL_CIPHER) *sk; | |
1347 | ||
1348 | sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, | |
1349 | &s->cipher_list_by_id, str, s->cert); | |
1350 | /* see comment in SSL_CTX_set_cipher_list */ | |
1351 | if (sk == NULL) | |
1352 | return 0; | |
1353 | else if (sk_SSL_CIPHER_num(sk) == 0) { | |
1354 | SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); | |
1355 | return 0; | |
1356 | } | |
1357 | return 1; | |
1358 | } | |
1359 | ||
1360 | /* works well for SSLv2, not so good for SSLv3 */ | |
1361 | char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) | |
1362 | { | |
1363 | char *p; | |
1364 | STACK_OF(SSL_CIPHER) *sk; | |
1365 | SSL_CIPHER *c; | |
1366 | int i; | |
1367 | ||
1368 | if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) | |
1369 | return (NULL); | |
1370 | ||
1371 | p = buf; | |
1372 | sk = s->session->ciphers; | |
1373 | ||
1374 | if (sk_SSL_CIPHER_num(sk) == 0) | |
1375 | return NULL; | |
1376 | ||
1377 | for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { | |
1378 | int n; | |
1379 | ||
1380 | c = sk_SSL_CIPHER_value(sk, i); | |
1381 | n = strlen(c->name); | |
1382 | if (n + 1 > len) { | |
1383 | if (p != buf) | |
1384 | --p; | |
1385 | *p = '\0'; | |
1386 | return buf; | |
1387 | } | |
1388 | strcpy(p, c->name); | |
1389 | p += n; | |
1390 | *(p++) = ':'; | |
1391 | len -= n + 1; | |
1392 | } | |
1393 | p[-1] = '\0'; | |
1394 | return (buf); | |
1395 | } | |
1396 | ||
1397 | #ifndef OPENSSL_NO_TLSEXT | |
1398 | /** return a servername extension value if provided in Client Hello, or NULL. | |
1399 | * So far, only host_name types are defined (RFC 3546). | |
1400 | */ | |
1401 | ||
1402 | const char *SSL_get_servername(const SSL *s, const int type) | |
1403 | { | |
1404 | if (type != TLSEXT_NAMETYPE_host_name) | |
1405 | return NULL; | |
1406 | ||
1407 | return s->session && !s->tlsext_hostname ? | |
1408 | s->session->tlsext_hostname : s->tlsext_hostname; | |
1409 | } | |
1410 | ||
1411 | int SSL_get_servername_type(const SSL *s) | |
1412 | { | |
1413 | if (s->session | |
1414 | && (!s->tlsext_hostname ? s->session-> | |
1415 | tlsext_hostname : s->tlsext_hostname)) | |
1416 | return TLSEXT_NAMETYPE_host_name; | |
1417 | return -1; | |
1418 | } | |
1419 | ||
1420 | /* | |
1421 | * SSL_select_next_proto implements the standard protocol selection. It is | |
1422 | * expected that this function is called from the callback set by | |
1423 | * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a | |
1424 | * vector of 8-bit, length prefixed byte strings. The length byte itself is | |
1425 | * not included in the length. A byte string of length 0 is invalid. No byte | |
1426 | * string may be truncated. The current, but experimental algorithm for | |
1427 | * selecting the protocol is: 1) If the server doesn't support NPN then this | |
1428 | * is indicated to the callback. In this case, the client application has to | |
1429 | * abort the connection or have a default application level protocol. 2) If | |
1430 | * the server supports NPN, but advertises an empty list then the client | |
1431 | * selects the first protcol in its list, but indicates via the API that this | |
1432 | * fallback case was enacted. 3) Otherwise, the client finds the first | |
1433 | * protocol in the server's list that it supports and selects this protocol. | |
1434 | * This is because it's assumed that the server has better information about | |
1435 | * which protocol a client should use. 4) If the client doesn't support any | |
1436 | * of the server's advertised protocols, then this is treated the same as | |
1437 | * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was | |
1438 | * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. | |
1439 | */ | |
1440 | int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, | |
1441 | const unsigned char *server, | |
1442 | unsigned int server_len, | |
1443 | const unsigned char *client, | |
1444 | unsigned int client_len) | |
1445 | { | |
1446 | unsigned int i, j; | |
1447 | const unsigned char *result; | |
1448 | int status = OPENSSL_NPN_UNSUPPORTED; | |
1449 | ||
1450 | /* | |
1451 | * For each protocol in server preference order, see if we support it. | |
1452 | */ | |
1453 | for (i = 0; i < server_len;) { | |
1454 | for (j = 0; j < client_len;) { | |
1455 | if (server[i] == client[j] && | |
1456 | memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { | |
1457 | /* We found a match */ | |
1458 | result = &server[i]; | |
1459 | status = OPENSSL_NPN_NEGOTIATED; | |
1460 | goto found; | |
1461 | } | |
1462 | j += client[j]; | |
1463 | j++; | |
1464 | } | |
1465 | i += server[i]; | |
1466 | i++; | |
1467 | } | |
1468 | ||
1469 | /* There's no overlap between our protocols and the server's list. */ | |
1470 | result = client; | |
1471 | status = OPENSSL_NPN_NO_OVERLAP; | |
1472 | ||
1473 | found: | |
1474 | *out = (unsigned char *)result + 1; | |
1475 | *outlen = result[0]; | |
1476 | return status; | |
1477 | } | |
1478 | ||
1479 | # ifndef OPENSSL_NO_NEXTPROTONEG | |
1480 | /* | |
1481 | * SSL_get0_next_proto_negotiated sets *data and *len to point to the | |
1482 | * client's requested protocol for this connection and returns 0. If the | |
1483 | * client didn't request any protocol, then *data is set to NULL. Note that | |
1484 | * the client can request any protocol it chooses. The value returned from | |
1485 | * this function need not be a member of the list of supported protocols | |
1486 | * provided by the callback. | |
1487 | */ | |
1488 | void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, | |
1489 | unsigned *len) | |
1490 | { | |
1491 | *data = s->next_proto_negotiated; | |
1492 | if (!*data) { | |
1493 | *len = 0; | |
1494 | } else { | |
1495 | *len = s->next_proto_negotiated_len; | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | /* | |
1500 | * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when | |
1501 | * a TLS server needs a list of supported protocols for Next Protocol | |
1502 | * Negotiation. The returned list must be in wire format. The list is | |
1503 | * returned by setting |out| to point to it and |outlen| to its length. This | |
1504 | * memory will not be modified, but one should assume that the SSL* keeps a | |
1505 | * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it | |
1506 | * wishes to advertise. Otherwise, no such extension will be included in the | |
1507 | * ServerHello. | |
1508 | */ | |
1509 | void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, | |
1510 | int (*cb) (SSL *ssl, | |
1511 | const unsigned char | |
1512 | **out, | |
1513 | unsigned int *outlen, | |
1514 | void *arg), void *arg) | |
1515 | { | |
1516 | ctx->next_protos_advertised_cb = cb; | |
1517 | ctx->next_protos_advertised_cb_arg = arg; | |
1518 | } | |
1519 | ||
1520 | /* | |
1521 | * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a | |
1522 | * client needs to select a protocol from the server's provided list. |out| | |
1523 | * must be set to point to the selected protocol (which may be within |in|). | |
1524 | * The length of the protocol name must be written into |outlen|. The | |
1525 | * server's advertised protocols are provided in |in| and |inlen|. The | |
1526 | * callback can assume that |in| is syntactically valid. The client must | |
1527 | * select a protocol. It is fatal to the connection if this callback returns | |
1528 | * a value other than SSL_TLSEXT_ERR_OK. | |
1529 | */ | |
1530 | void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, | |
1531 | int (*cb) (SSL *s, unsigned char **out, | |
1532 | unsigned char *outlen, | |
1533 | const unsigned char *in, | |
1534 | unsigned int inlen, | |
1535 | void *arg), void *arg) | |
1536 | { | |
1537 | ctx->next_proto_select_cb = cb; | |
1538 | ctx->next_proto_select_cb_arg = arg; | |
1539 | } | |
1540 | # endif | |
1541 | ||
1542 | /* | |
1543 | * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. | |
1544 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
1545 | * length-prefixed strings). Returns 0 on success. | |
1546 | */ | |
1547 | int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, | |
1548 | unsigned protos_len) | |
1549 | { | |
1550 | OPENSSL_free(ctx->alpn_client_proto_list); | |
1551 | ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); | |
1552 | if (!ctx->alpn_client_proto_list) | |
1553 | return 1; | |
1554 | memcpy(ctx->alpn_client_proto_list, protos, protos_len); | |
1555 | ctx->alpn_client_proto_list_len = protos_len; | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | /* | |
1561 | * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. | |
1562 | * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit | |
1563 | * length-prefixed strings). Returns 0 on success. | |
1564 | */ | |
1565 | int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, | |
1566 | unsigned protos_len) | |
1567 | { | |
1568 | OPENSSL_free(ssl->alpn_client_proto_list); | |
1569 | ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); | |
1570 | if (!ssl->alpn_client_proto_list) | |
1571 | return 1; | |
1572 | memcpy(ssl->alpn_client_proto_list, protos, protos_len); | |
1573 | ssl->alpn_client_proto_list_len = protos_len; | |
1574 | ||
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | /* | |
1579 | * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is | |
1580 | * called during ClientHello processing in order to select an ALPN protocol | |
1581 | * from the client's list of offered protocols. | |
1582 | */ | |
1583 | void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, | |
1584 | int (*cb) (SSL *ssl, | |
1585 | const unsigned char **out, | |
1586 | unsigned char *outlen, | |
1587 | const unsigned char *in, | |
1588 | unsigned int inlen, | |
1589 | void *arg), void *arg) | |
1590 | { | |
1591 | ctx->alpn_select_cb = cb; | |
1592 | ctx->alpn_select_cb_arg = arg; | |
1593 | } | |
1594 | ||
1595 | /* | |
1596 | * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from | |
1597 | * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name | |
1598 | * (not including the leading length-prefix byte). If the server didn't | |
1599 | * respond with a negotiated protocol then |*len| will be zero. | |
1600 | */ | |
1601 | void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, | |
1602 | unsigned *len) | |
1603 | { | |
1604 | *data = NULL; | |
1605 | if (ssl->s3) | |
1606 | *data = ssl->s3->alpn_selected; | |
1607 | if (*data == NULL) | |
1608 | *len = 0; | |
1609 | else | |
1610 | *len = ssl->s3->alpn_selected_len; | |
1611 | } | |
1612 | ||
1613 | #endif /* !OPENSSL_NO_TLSEXT */ | |
1614 | ||
1615 | int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, | |
1616 | const char *label, size_t llen, | |
1617 | const unsigned char *p, size_t plen, | |
1618 | int use_context) | |
1619 | { | |
1620 | if (s->version < TLS1_VERSION) | |
1621 | return -1; | |
1622 | ||
1623 | return s->method->ssl3_enc->export_keying_material(s, out, olen, label, | |
1624 | llen, p, plen, | |
1625 | use_context); | |
1626 | } | |
1627 | ||
1628 | static unsigned long ssl_session_hash(const SSL_SESSION *a) | |
1629 | { | |
1630 | unsigned long l; | |
1631 | ||
1632 | l = (unsigned long) | |
1633 | ((unsigned int)a->session_id[0]) | | |
1634 | ((unsigned int)a->session_id[1] << 8L) | | |
1635 | ((unsigned long)a->session_id[2] << 16L) | | |
1636 | ((unsigned long)a->session_id[3] << 24L); | |
1637 | return (l); | |
1638 | } | |
1639 | ||
1640 | /* | |
1641 | * NB: If this function (or indeed the hash function which uses a sort of | |
1642 | * coarser function than this one) is changed, ensure | |
1643 | * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on | |
1644 | * being able to construct an SSL_SESSION that will collide with any existing | |
1645 | * session with a matching session ID. | |
1646 | */ | |
1647 | static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) | |
1648 | { | |
1649 | if (a->ssl_version != b->ssl_version) | |
1650 | return (1); | |
1651 | if (a->session_id_length != b->session_id_length) | |
1652 | return (1); | |
1653 | return (memcmp(a->session_id, b->session_id, a->session_id_length)); | |
1654 | } | |
1655 | ||
1656 | /* | |
1657 | * These wrapper functions should remain rather than redeclaring | |
1658 | * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each | |
1659 | * variable. The reason is that the functions aren't static, they're exposed | |
1660 | * via ssl.h. | |
1661 | */ | |
1662 | static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) | |
1663 | static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) | |
1664 | ||
1665 | SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) | |
1666 | { | |
1667 | SSL_CTX *ret = NULL; | |
1668 | ||
1669 | if (meth == NULL) { | |
1670 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); | |
1671 | return (NULL); | |
1672 | } | |
1673 | ||
1674 | if (FIPS_mode() && (meth->version < TLS1_VERSION)) { | |
1675 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); | |
1676 | return NULL; | |
1677 | } | |
1678 | ||
1679 | if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { | |
1680 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); | |
1681 | goto err; | |
1682 | } | |
1683 | ret = OPENSSL_malloc(sizeof(*ret)); | |
1684 | if (ret == NULL) | |
1685 | goto err; | |
1686 | ||
1687 | memset(ret, 0, sizeof(*ret)); | |
1688 | ||
1689 | ret->method = meth; | |
1690 | ||
1691 | ret->cert_store = NULL; | |
1692 | ret->session_cache_mode = SSL_SESS_CACHE_SERVER; | |
1693 | ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; | |
1694 | ret->session_cache_head = NULL; | |
1695 | ret->session_cache_tail = NULL; | |
1696 | ||
1697 | /* We take the system default */ | |
1698 | ret->session_timeout = meth->get_timeout(); | |
1699 | ||
1700 | ret->new_session_cb = 0; | |
1701 | ret->remove_session_cb = 0; | |
1702 | ret->get_session_cb = 0; | |
1703 | ret->generate_session_id = 0; | |
1704 | ||
1705 | memset(&ret->stats, 0, sizeof(ret->stats)); | |
1706 | ||
1707 | ret->references = 1; | |
1708 | ret->quiet_shutdown = 0; | |
1709 | ret->info_callback = NULL; | |
1710 | ret->app_verify_callback = 0; | |
1711 | ret->app_verify_arg = NULL; | |
1712 | ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; | |
1713 | ret->read_ahead = 0; | |
1714 | ret->msg_callback = 0; | |
1715 | ret->msg_callback_arg = NULL; | |
1716 | ret->verify_mode = SSL_VERIFY_NONE; | |
1717 | ret->sid_ctx_length = 0; | |
1718 | ret->default_verify_callback = NULL; | |
1719 | if ((ret->cert = ssl_cert_new()) == NULL) | |
1720 | goto err; | |
1721 | ||
1722 | ret->default_passwd_callback = 0; | |
1723 | ret->default_passwd_callback_userdata = NULL; | |
1724 | ret->client_cert_cb = 0; | |
1725 | ret->app_gen_cookie_cb = 0; | |
1726 | ret->app_verify_cookie_cb = 0; | |
1727 | ||
1728 | ret->sessions = lh_SSL_SESSION_new(); | |
1729 | if (ret->sessions == NULL) | |
1730 | goto err; | |
1731 | ret->cert_store = X509_STORE_new(); | |
1732 | if (ret->cert_store == NULL) | |
1733 | goto err; | |
1734 | ||
1735 | if (!ssl_create_cipher_list(ret->method, | |
1736 | &ret->cipher_list, &ret->cipher_list_by_id, | |
1737 | SSL_DEFAULT_CIPHER_LIST, ret->cert) | |
1738 | || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { | |
1739 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); | |
1740 | goto err2; | |
1741 | } | |
1742 | ||
1743 | ret->param = X509_VERIFY_PARAM_new(); | |
1744 | if (!ret->param) | |
1745 | goto err; | |
1746 | ||
1747 | if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { | |
1748 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); | |
1749 | goto err2; | |
1750 | } | |
1751 | if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { | |
1752 | SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); | |
1753 | goto err2; | |
1754 | } | |
1755 | ||
1756 | if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) | |
1757 | goto err; | |
1758 | ||
1759 | CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); | |
1760 | ||
1761 | ret->extra_certs = NULL; | |
1762 | /* No compression for DTLS */ | |
1763 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)) | |
1764 | ret->comp_methods = SSL_COMP_get_compression_methods(); | |
1765 | ||
1766 | ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; | |
1767 | ||
1768 | #ifndef OPENSSL_NO_TLSEXT | |
1769 | ret->tlsext_servername_callback = 0; | |
1770 | ret->tlsext_servername_arg = NULL; | |
1771 | /* Setup RFC4507 ticket keys */ | |
1772 | if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0) | |
1773 | || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) | |
1774 | || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) | |
1775 | ret->options |= SSL_OP_NO_TICKET; | |
1776 | ||
1777 | ret->tlsext_status_cb = 0; | |
1778 | ret->tlsext_status_arg = NULL; | |
1779 | ||
1780 | # ifndef OPENSSL_NO_NEXTPROTONEG | |
1781 | ret->next_protos_advertised_cb = 0; | |
1782 | ret->next_proto_select_cb = 0; | |
1783 | # endif | |
1784 | #endif | |
1785 | #ifndef OPENSSL_NO_PSK | |
1786 | ret->psk_identity_hint = NULL; | |
1787 | ret->psk_client_callback = NULL; | |
1788 | ret->psk_server_callback = NULL; | |
1789 | #endif | |
1790 | #ifndef OPENSSL_NO_SRP | |
1791 | if (!SSL_CTX_SRP_CTX_init(ret)) | |
1792 | goto err; | |
1793 | #endif | |
1794 | #ifndef OPENSSL_NO_ENGINE | |
1795 | ret->client_cert_engine = NULL; | |
1796 | # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO | |
1797 | # define eng_strx(x) #x | |
1798 | # define eng_str(x) eng_strx(x) | |
1799 | /* Use specific client engine automatically... ignore errors */ | |
1800 | { | |
1801 | ENGINE *eng; | |
1802 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
1803 | if (!eng) { | |
1804 | ERR_clear_error(); | |
1805 | ENGINE_load_builtin_engines(); | |
1806 | eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); | |
1807 | } | |
1808 | if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) | |
1809 | ERR_clear_error(); | |
1810 | } | |
1811 | # endif | |
1812 | #endif | |
1813 | /* | |
1814 | * Default is to connect to non-RI servers. When RI is more widely | |
1815 | * deployed might change this. | |
1816 | */ | |
1817 | ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; | |
1818 | ||
1819 | return (ret); | |
1820 | err: | |
1821 | SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
1822 | err2: | |
1823 | SSL_CTX_free(ret); | |
1824 | return (NULL); | |
1825 | } | |
1826 | ||
1827 | void SSL_CTX_free(SSL_CTX *a) | |
1828 | { | |
1829 | int i; | |
1830 | ||
1831 | if (a == NULL) | |
1832 | return; | |
1833 | ||
1834 | i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); | |
1835 | #ifdef REF_PRINT | |
1836 | REF_PRINT("SSL_CTX", a); | |
1837 | #endif | |
1838 | if (i > 0) | |
1839 | return; | |
1840 | #ifdef REF_CHECK | |
1841 | if (i < 0) { | |
1842 | fprintf(stderr, "SSL_CTX_free, bad reference count\n"); | |
1843 | abort(); /* ok */ | |
1844 | } | |
1845 | #endif | |
1846 | ||
1847 | X509_VERIFY_PARAM_free(a->param); | |
1848 | ||
1849 | /* | |
1850 | * Free internal session cache. However: the remove_cb() may reference | |
1851 | * the ex_data of SSL_CTX, thus the ex_data store can only be removed | |
1852 | * after the sessions were flushed. | |
1853 | * As the ex_data handling routines might also touch the session cache, | |
1854 | * the most secure solution seems to be: empty (flush) the cache, then | |
1855 | * free ex_data, then finally free the cache. | |
1856 | * (See ticket [openssl.org #212].) | |
1857 | */ | |
1858 | if (a->sessions != NULL) | |
1859 | SSL_CTX_flush_sessions(a, 0); | |
1860 | ||
1861 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); | |
1862 | lh_SSL_SESSION_free(a->sessions); | |
1863 | X509_STORE_free(a->cert_store); | |
1864 | sk_SSL_CIPHER_free(a->cipher_list); | |
1865 | sk_SSL_CIPHER_free(a->cipher_list_by_id); | |
1866 | ssl_cert_free(a->cert); | |
1867 | sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); | |
1868 | sk_X509_pop_free(a->extra_certs, X509_free); | |
1869 | a->comp_methods = NULL; | |
1870 | #ifndef OPENSSL_NO_SRTP | |
1871 | sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); | |
1872 | #endif | |
1873 | #ifndef OPENSSL_NO_PSK | |
1874 | OPENSSL_free(a->psk_identity_hint); | |
1875 | #endif | |
1876 | #ifndef OPENSSL_NO_SRP | |
1877 | SSL_CTX_SRP_CTX_free(a); | |
1878 | #endif | |
1879 | #ifndef OPENSSL_NO_ENGINE | |
1880 | if (a->client_cert_engine) | |
1881 | ENGINE_finish(a->client_cert_engine); | |
1882 | #endif | |
1883 | ||
1884 | #ifndef OPENSSL_NO_TLSEXT | |
1885 | # ifndef OPENSSL_NO_EC | |
1886 | OPENSSL_free(a->tlsext_ecpointformatlist); | |
1887 | OPENSSL_free(a->tlsext_ellipticcurvelist); | |
1888 | # endif | |
1889 | OPENSSL_free(a->alpn_client_proto_list); | |
1890 | #endif | |
1891 | ||
1892 | OPENSSL_free(a); | |
1893 | } | |
1894 | ||
1895 | void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) | |
1896 | { | |
1897 | ctx->default_passwd_callback = cb; | |
1898 | } | |
1899 | ||
1900 | void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) | |
1901 | { | |
1902 | ctx->default_passwd_callback_userdata = u; | |
1903 | } | |
1904 | ||
1905 | void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, | |
1906 | int (*cb) (X509_STORE_CTX *, void *), | |
1907 | void *arg) | |
1908 | { | |
1909 | ctx->app_verify_callback = cb; | |
1910 | ctx->app_verify_arg = arg; | |
1911 | } | |
1912 | ||
1913 | void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, | |
1914 | int (*cb) (int, X509_STORE_CTX *)) | |
1915 | { | |
1916 | ctx->verify_mode = mode; | |
1917 | ctx->default_verify_callback = cb; | |
1918 | } | |
1919 | ||
1920 | void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) | |
1921 | { | |
1922 | X509_VERIFY_PARAM_set_depth(ctx->param, depth); | |
1923 | } | |
1924 | ||
1925 | void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), | |
1926 | void *arg) | |
1927 | { | |
1928 | ssl_cert_set_cert_cb(c->cert, cb, arg); | |
1929 | } | |
1930 | ||
1931 | void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) | |
1932 | { | |
1933 | ssl_cert_set_cert_cb(s->cert, cb, arg); | |
1934 | } | |
1935 | ||
1936 | void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) | |
1937 | { | |
1938 | CERT_PKEY *cpk; | |
1939 | int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; | |
1940 | int rsa_enc_export, dh_rsa_export, dh_dsa_export; | |
1941 | int rsa_tmp_export, dh_tmp_export, kl; | |
1942 | unsigned long mask_k, mask_a, emask_k, emask_a; | |
1943 | #ifndef OPENSSL_NO_EC | |
1944 | int have_ecc_cert, ecdsa_ok, ecc_pkey_size; | |
1945 | int have_ecdh_tmp, ecdh_ok; | |
1946 | X509 *x = NULL; | |
1947 | EVP_PKEY *ecc_pkey = NULL; | |
1948 | int signature_nid = 0, pk_nid = 0, md_nid = 0; | |
1949 | #endif | |
1950 | if (c == NULL) | |
1951 | return; | |
1952 | ||
1953 | kl = SSL_C_EXPORT_PKEYLENGTH(cipher); | |
1954 | ||
1955 | #ifndef OPENSSL_NO_RSA | |
1956 | rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); | |
1957 | rsa_tmp_export = (c->rsa_tmp_cb != NULL || | |
1958 | (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl)); | |
1959 | #else | |
1960 | rsa_tmp = rsa_tmp_export = 0; | |
1961 | #endif | |
1962 | #ifndef OPENSSL_NO_DH | |
1963 | dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto); | |
1964 | dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL || | |
1965 | (dh_tmp | |
1966 | && DH_size(c->dh_tmp) * 8 <= kl)); | |
1967 | #else | |
1968 | dh_tmp = dh_tmp_export = 0; | |
1969 | #endif | |
1970 | ||
1971 | #ifndef OPENSSL_NO_EC | |
1972 | have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto); | |
1973 | #endif | |
1974 | cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); | |
1975 | rsa_enc = cpk->valid_flags & CERT_PKEY_VALID; | |
1976 | rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); | |
1977 | cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); | |
1978 | rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; | |
1979 | cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); | |
1980 | dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; | |
1981 | cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); | |
1982 | dh_rsa = cpk->valid_flags & CERT_PKEY_VALID; | |
1983 | dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); | |
1984 | cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); | |
1985 | /* FIX THIS EAY EAY EAY */ | |
1986 | dh_dsa = cpk->valid_flags & CERT_PKEY_VALID; | |
1987 | dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); | |
1988 | cpk = &(c->pkeys[SSL_PKEY_ECC]); | |
1989 | #ifndef OPENSSL_NO_EC | |
1990 | have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID; | |
1991 | #endif | |
1992 | mask_k = 0; | |
1993 | mask_a = 0; | |
1994 | emask_k = 0; | |
1995 | emask_a = 0; | |
1996 | ||
1997 | #ifdef CIPHER_DEBUG | |
1998 | fprintf(stderr, | |
1999 | "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", | |
2000 | rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc, | |
2001 | rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); | |
2002 | #endif | |
2003 | ||
2004 | cpk = &(c->pkeys[SSL_PKEY_GOST01]); | |
2005 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2006 | mask_k |= SSL_kGOST; | |
2007 | mask_a |= SSL_aGOST01; | |
2008 | } | |
2009 | cpk = &(c->pkeys[SSL_PKEY_GOST94]); | |
2010 | if (cpk->x509 != NULL && cpk->privatekey != NULL) { | |
2011 | mask_k |= SSL_kGOST; | |
2012 | mask_a |= SSL_aGOST94; | |
2013 | } | |
2014 | ||
2015 | if (rsa_enc || (rsa_tmp && rsa_sign)) | |
2016 | mask_k |= SSL_kRSA; | |
2017 | if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) | |
2018 | emask_k |= SSL_kRSA; | |
2019 | ||
2020 | if (dh_tmp_export) | |
2021 | emask_k |= SSL_kDHE; | |
2022 | ||
2023 | if (dh_tmp) | |
2024 | mask_k |= SSL_kDHE; | |
2025 | ||
2026 | if (dh_rsa) | |
2027 | mask_k |= SSL_kDHr; | |
2028 | if (dh_rsa_export) | |
2029 | emask_k |= SSL_kDHr; | |
2030 | ||
2031 | if (dh_dsa) | |
2032 | mask_k |= SSL_kDHd; | |
2033 | if (dh_dsa_export) | |
2034 | emask_k |= SSL_kDHd; | |
2035 | ||
2036 | if (emask_k & (SSL_kDHr | SSL_kDHd)) | |
2037 | mask_a |= SSL_aDH; | |
2038 | ||
2039 | if (rsa_enc || rsa_sign) { | |
2040 | mask_a |= SSL_aRSA; | |
2041 | emask_a |= SSL_aRSA; | |
2042 | } | |
2043 | ||
2044 | if (dsa_sign) { | |
2045 | mask_a |= SSL_aDSS; | |
2046 | emask_a |= SSL_aDSS; | |
2047 | } | |
2048 | ||
2049 | mask_a |= SSL_aNULL; | |
2050 | emask_a |= SSL_aNULL; | |
2051 | ||
2052 | /* | |
2053 | * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites | |
2054 | * depending on the key usage extension. | |
2055 | */ | |
2056 | #ifndef OPENSSL_NO_EC | |
2057 | if (have_ecc_cert) { | |
2058 | cpk = &c->pkeys[SSL_PKEY_ECC]; | |
2059 | x = cpk->x509; | |
2060 | /* This call populates extension flags (ex_flags) */ | |
2061 | X509_check_purpose(x, -1, 0); | |
2062 | ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? | |
2063 | (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; | |
2064 | ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? | |
2065 | (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; | |
2066 | if (!(cpk->valid_flags & CERT_PKEY_SIGN)) | |
2067 | ecdsa_ok = 0; | |
2068 | ecc_pkey = X509_get_pubkey(x); | |
2069 | ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0; | |
2070 | EVP_PKEY_free(ecc_pkey); | |
2071 | if ((x->sig_alg) && (x->sig_alg->algorithm)) { | |
2072 | signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); | |
2073 | OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); | |
2074 | } | |
2075 | if (ecdh_ok) { | |
2076 | ||
2077 | if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { | |
2078 | mask_k |= SSL_kECDHr; | |
2079 | mask_a |= SSL_aECDH; | |
2080 | if (ecc_pkey_size <= 163) { | |
2081 | emask_k |= SSL_kECDHr; | |
2082 | emask_a |= SSL_aECDH; | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | if (pk_nid == NID_X9_62_id_ecPublicKey) { | |
2087 | mask_k |= SSL_kECDHe; | |
2088 | mask_a |= SSL_aECDH; | |
2089 | if (ecc_pkey_size <= 163) { | |
2090 | emask_k |= SSL_kECDHe; | |
2091 | emask_a |= SSL_aECDH; | |
2092 | } | |
2093 | } | |
2094 | } | |
2095 | if (ecdsa_ok) { | |
2096 | mask_a |= SSL_aECDSA; | |
2097 | emask_a |= SSL_aECDSA; | |
2098 | } | |
2099 | } | |
2100 | #endif | |
2101 | ||
2102 | #ifndef OPENSSL_NO_EC | |
2103 | if (have_ecdh_tmp) { | |
2104 | mask_k |= SSL_kECDHE; | |
2105 | emask_k |= SSL_kECDHE; | |
2106 | } | |
2107 | #endif | |
2108 | ||
2109 | #ifndef OPENSSL_NO_PSK | |
2110 | mask_k |= SSL_kPSK; | |
2111 | mask_a |= SSL_aPSK; | |
2112 | emask_k |= SSL_kPSK; | |
2113 | emask_a |= SSL_aPSK; | |
2114 | #endif | |
2115 | ||
2116 | c->mask_k = mask_k; | |
2117 | c->mask_a = mask_a; | |
2118 | c->export_mask_k = emask_k; | |
2119 | c->export_mask_a = emask_a; | |
2120 | c->valid = 1; | |
2121 | } | |
2122 | ||
2123 | /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ | |
2124 | #define ku_reject(x, usage) \ | |
2125 | (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) | |
2126 | ||
2127 | #ifndef OPENSSL_NO_EC | |
2128 | ||
2129 | int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) | |
2130 | { | |
2131 | unsigned long alg_k, alg_a; | |
2132 | EVP_PKEY *pkey = NULL; | |
2133 | int keysize = 0; | |
2134 | int signature_nid = 0, md_nid = 0, pk_nid = 0; | |
2135 | const SSL_CIPHER *cs = s->s3->tmp.new_cipher; | |
2136 | ||
2137 | alg_k = cs->algorithm_mkey; | |
2138 | alg_a = cs->algorithm_auth; | |
2139 | ||
2140 | if (SSL_C_IS_EXPORT(cs)) { | |
2141 | /* ECDH key length in export ciphers must be <= 163 bits */ | |
2142 | pkey = X509_get_pubkey(x); | |
2143 | if (pkey == NULL) | |
2144 | return 0; | |
2145 | keysize = EVP_PKEY_bits(pkey); | |
2146 | EVP_PKEY_free(pkey); | |
2147 | if (keysize > 163) | |
2148 | return 0; | |
2149 | } | |
2150 | ||
2151 | /* This call populates the ex_flags field correctly */ | |
2152 | X509_check_purpose(x, -1, 0); | |
2153 | if ((x->sig_alg) && (x->sig_alg->algorithm)) { | |
2154 | signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); | |
2155 | OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); | |
2156 | } | |
2157 | if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { | |
2158 | /* key usage, if present, must allow key agreement */ | |
2159 | if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { | |
2160 | SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, | |
2161 | SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); | |
2162 | return 0; | |
2163 | } | |
2164 | if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { | |
2165 | /* signature alg must be ECDSA */ | |
2166 | if (pk_nid != NID_X9_62_id_ecPublicKey) { | |
2167 | SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, | |
2168 | SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); | |
2169 | return 0; | |
2170 | } | |
2171 | } | |
2172 | if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { | |
2173 | /* signature alg must be RSA */ | |
2174 | ||
2175 | if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { | |
2176 | SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, | |
2177 | SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); | |
2178 | return 0; | |
2179 | } | |
2180 | } | |
2181 | } | |
2182 | if (alg_a & SSL_aECDSA) { | |
2183 | /* key usage, if present, must allow signing */ | |
2184 | if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { | |
2185 | SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, | |
2186 | SSL_R_ECC_CERT_NOT_FOR_SIGNING); | |
2187 | return 0; | |
2188 | } | |
2189 | } | |
2190 | ||
2191 | return 1; /* all checks are ok */ | |
2192 | } | |
2193 | ||
2194 | #endif | |
2195 | ||
2196 | static int ssl_get_server_cert_index(const SSL *s) | |
2197 | { | |
2198 | int idx; | |
2199 | idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); | |
2200 | if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) | |
2201 | idx = SSL_PKEY_RSA_SIGN; | |
2202 | if (idx == -1) | |
2203 | SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); | |
2204 | return idx; | |
2205 | } | |
2206 | ||
2207 | CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) | |
2208 | { | |
2209 | CERT *c; | |
2210 | int i; | |
2211 | ||
2212 | c = s->cert; | |
2213 | if (!s->s3 || !s->s3->tmp.new_cipher) | |
2214 | return NULL; | |
2215 | ssl_set_cert_masks(c, s->s3->tmp.new_cipher); | |
2216 | ||
2217 | #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL | |
2218 | /* | |
2219 | * Broken protocol test: return last used certificate: which may mismatch | |
2220 | * the one expected. | |
2221 | */ | |
2222 | if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) | |
2223 | return c->key; | |
2224 | #endif | |
2225 | ||
2226 | i = ssl_get_server_cert_index(s); | |
2227 | ||
2228 | /* This may or may not be an error. */ | |
2229 | if (i < 0) | |
2230 | return NULL; | |
2231 | ||
2232 | /* May be NULL. */ | |
2233 | return &c->pkeys[i]; | |
2234 | } | |
2235 | ||
2236 | EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, | |
2237 | const EVP_MD **pmd) | |
2238 | { | |
2239 | unsigned long alg_a; | |
2240 | CERT *c; | |
2241 | int idx = -1; | |
2242 | ||
2243 | alg_a = cipher->algorithm_auth; | |
2244 | c = s->cert; | |
2245 | ||
2246 | #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL | |
2247 | /* | |
2248 | * Broken protocol test: use last key: which may mismatch the one | |
2249 | * expected. | |
2250 | */ | |
2251 | if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) | |
2252 | idx = c->key - c->pkeys; | |
2253 | else | |
2254 | #endif | |
2255 | ||
2256 | if ((alg_a & SSL_aDSS) && | |
2257 | (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) | |
2258 | idx = SSL_PKEY_DSA_SIGN; | |
2259 | else if (alg_a & SSL_aRSA) { | |
2260 | if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) | |
2261 | idx = SSL_PKEY_RSA_SIGN; | |
2262 | else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) | |
2263 | idx = SSL_PKEY_RSA_ENC; | |
2264 | } else if ((alg_a & SSL_aECDSA) && | |
2265 | (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) | |
2266 | idx = SSL_PKEY_ECC; | |
2267 | if (idx == -1) { | |
2268 | SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); | |
2269 | return (NULL); | |
2270 | } | |
2271 | if (pmd) | |
2272 | *pmd = c->pkeys[idx].digest; | |
2273 | return c->pkeys[idx].privatekey; | |
2274 | } | |
2275 | ||
2276 | #ifndef OPENSSL_NO_TLSEXT | |
2277 | int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, | |
2278 | size_t *serverinfo_length) | |
2279 | { | |
2280 | CERT *c = NULL; | |
2281 | int i = 0; | |
2282 | *serverinfo_length = 0; | |
2283 | ||
2284 | c = s->cert; | |
2285 | i = ssl_get_server_cert_index(s); | |
2286 | ||
2287 | if (i == -1) | |
2288 | return 0; | |
2289 | if (c->pkeys[i].serverinfo == NULL) | |
2290 | return 0; | |
2291 | ||
2292 | *serverinfo = c->pkeys[i].serverinfo; | |
2293 | *serverinfo_length = c->pkeys[i].serverinfo_length; | |
2294 | return 1; | |
2295 | } | |
2296 | #endif | |
2297 | ||
2298 | void ssl_update_cache(SSL *s, int mode) | |
2299 | { | |
2300 | int i; | |
2301 | ||
2302 | /* | |
2303 | * If the session_id_length is 0, we are not supposed to cache it, and it | |
2304 | * would be rather hard to do anyway :-) | |
2305 | */ | |
2306 | if (s->session->session_id_length == 0) | |
2307 | return; | |
2308 | ||
2309 | i = s->session_ctx->session_cache_mode; | |
2310 | if ((i & mode) && (!s->hit) | |
2311 | && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) | |
2312 | || SSL_CTX_add_session(s->session_ctx, s->session)) | |
2313 | && (s->session_ctx->new_session_cb != NULL)) { | |
2314 | CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); | |
2315 | if (!s->session_ctx->new_session_cb(s, s->session)) | |
2316 | SSL_SESSION_free(s->session); | |
2317 | } | |
2318 | ||
2319 | /* auto flush every 255 connections */ | |
2320 | if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { | |
2321 | if ((((mode & SSL_SESS_CACHE_CLIENT) | |
2322 | ? s->session_ctx->stats.sess_connect_good | |
2323 | : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { | |
2324 | SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); | |
2325 | } | |
2326 | } | |
2327 | } | |
2328 | ||
2329 | const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) | |
2330 | { | |
2331 | return ctx->method; | |
2332 | } | |
2333 | ||
2334 | const SSL_METHOD *SSL_get_ssl_method(SSL *s) | |
2335 | { | |
2336 | return (s->method); | |
2337 | } | |
2338 | ||
2339 | int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) | |
2340 | { | |
2341 | int conn = -1; | |
2342 | int ret = 1; | |
2343 | ||
2344 | if (s->method != meth) { | |
2345 | if (s->handshake_func != NULL) | |
2346 | conn = (s->handshake_func == s->method->ssl_connect); | |
2347 | ||
2348 | if (s->method->version == meth->version) | |
2349 | s->method = meth; | |
2350 | else { | |
2351 | s->method->ssl_free(s); | |
2352 | s->method = meth; | |
2353 | ret = s->method->ssl_new(s); | |
2354 | } | |
2355 | ||
2356 | if (conn == 1) | |
2357 | s->handshake_func = meth->ssl_connect; | |
2358 | else if (conn == 0) | |
2359 | s->handshake_func = meth->ssl_accept; | |
2360 | } | |
2361 | return (ret); | |
2362 | } | |
2363 | ||
2364 | int SSL_get_error(const SSL *s, int i) | |
2365 | { | |
2366 | int reason; | |
2367 | unsigned long l; | |
2368 | BIO *bio; | |
2369 | ||
2370 | if (i > 0) | |
2371 | return (SSL_ERROR_NONE); | |
2372 | ||
2373 | /* | |
2374 | * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, | |
2375 | * where we do encode the error | |
2376 | */ | |
2377 | if ((l = ERR_peek_error()) != 0) { | |
2378 | if (ERR_GET_LIB(l) == ERR_LIB_SYS) | |
2379 | return (SSL_ERROR_SYSCALL); | |
2380 | else | |
2381 | return (SSL_ERROR_SSL); | |
2382 | } | |
2383 | ||
2384 | if ((i < 0) && SSL_want_read(s)) { | |
2385 | bio = SSL_get_rbio(s); | |
2386 | if (BIO_should_read(bio)) | |
2387 | return (SSL_ERROR_WANT_READ); | |
2388 | else if (BIO_should_write(bio)) | |
2389 | /* | |
2390 | * This one doesn't make too much sense ... We never try to write | |
2391 | * to the rbio, and an application program where rbio and wbio | |
2392 | * are separate couldn't even know what it should wait for. | |
2393 | * However if we ever set s->rwstate incorrectly (so that we have | |
2394 | * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and | |
2395 | * wbio *are* the same, this test works around that bug; so it | |
2396 | * might be safer to keep it. | |
2397 | */ | |
2398 | return (SSL_ERROR_WANT_WRITE); | |
2399 | else if (BIO_should_io_special(bio)) { | |
2400 | reason = BIO_get_retry_reason(bio); | |
2401 | if (reason == BIO_RR_CONNECT) | |
2402 | return (SSL_ERROR_WANT_CONNECT); | |
2403 | else if (reason == BIO_RR_ACCEPT) | |
2404 | return (SSL_ERROR_WANT_ACCEPT); | |
2405 | else | |
2406 | return (SSL_ERROR_SYSCALL); /* unknown */ | |
2407 | } | |
2408 | } | |
2409 | ||
2410 | if ((i < 0) && SSL_want_write(s)) { | |
2411 | bio = SSL_get_wbio(s); | |
2412 | if (BIO_should_write(bio)) | |
2413 | return (SSL_ERROR_WANT_WRITE); | |
2414 | else if (BIO_should_read(bio)) | |
2415 | /* | |
2416 | * See above (SSL_want_read(s) with BIO_should_write(bio)) | |
2417 | */ | |
2418 | return (SSL_ERROR_WANT_READ); | |
2419 | else if (BIO_should_io_special(bio)) { | |
2420 | reason = BIO_get_retry_reason(bio); | |
2421 | if (reason == BIO_RR_CONNECT) | |
2422 | return (SSL_ERROR_WANT_CONNECT); | |
2423 | else if (reason == BIO_RR_ACCEPT) | |
2424 | return (SSL_ERROR_WANT_ACCEPT); | |
2425 | else | |
2426 | return (SSL_ERROR_SYSCALL); | |
2427 | } | |
2428 | } | |
2429 | if ((i < 0) && SSL_want_x509_lookup(s)) { | |
2430 | return (SSL_ERROR_WANT_X509_LOOKUP); | |
2431 | } | |
2432 | ||
2433 | if (i == 0) { | |
2434 | if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && | |
2435 | (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) | |
2436 | return (SSL_ERROR_ZERO_RETURN); | |
2437 | } | |
2438 | return (SSL_ERROR_SYSCALL); | |
2439 | } | |
2440 | ||
2441 | int SSL_do_handshake(SSL *s) | |
2442 | { | |
2443 | int ret = 1; | |
2444 | ||
2445 | if (s->handshake_func == NULL) { | |
2446 | SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); | |
2447 | return (-1); | |
2448 | } | |
2449 | ||
2450 | s->method->ssl_renegotiate_check(s); | |
2451 | ||
2452 | if (SSL_in_init(s) || SSL_in_before(s)) { | |
2453 | ret = s->handshake_func(s); | |
2454 | } | |
2455 | return (ret); | |
2456 | } | |
2457 | ||
2458 | /* | |
2459 | * For the next 2 functions, SSL_clear() sets shutdown and so one of these | |
2460 | * calls will reset it | |
2461 | */ | |
2462 | void SSL_set_accept_state(SSL *s) | |
2463 | { | |
2464 | s->server = 1; | |
2465 | s->shutdown = 0; | |
2466 | s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE; | |
2467 | s->handshake_func = s->method->ssl_accept; | |
2468 | /* clear the current cipher */ | |
2469 | ssl_clear_cipher_ctx(s); | |
2470 | ssl_clear_hash_ctx(&s->read_hash); | |
2471 | ssl_clear_hash_ctx(&s->write_hash); | |
2472 | } | |
2473 | ||
2474 | void SSL_set_connect_state(SSL *s) | |
2475 | { | |
2476 | s->server = 0; | |
2477 | s->shutdown = 0; | |
2478 | s->state = SSL_ST_CONNECT | SSL_ST_BEFORE; | |
2479 | s->handshake_func = s->method->ssl_connect; | |
2480 | /* clear the current cipher */ | |
2481 | ssl_clear_cipher_ctx(s); | |
2482 | ssl_clear_hash_ctx(&s->read_hash); | |
2483 | ssl_clear_hash_ctx(&s->write_hash); | |
2484 | } | |
2485 | ||
2486 | int ssl_undefined_function(SSL *s) | |
2487 | { | |
2488 | SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
2489 | return (0); | |
2490 | } | |
2491 | ||
2492 | int ssl_undefined_void_function(void) | |
2493 | { | |
2494 | SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, | |
2495 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
2496 | return (0); | |
2497 | } | |
2498 | ||
2499 | int ssl_undefined_const_function(const SSL *s) | |
2500 | { | |
2501 | SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, | |
2502 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
2503 | return (0); | |
2504 | } | |
2505 | ||
2506 | SSL_METHOD *ssl_bad_method(int ver) | |
2507 | { | |
2508 | SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
2509 | return (NULL); | |
2510 | } | |
2511 | ||
2512 | const char *SSL_get_version(const SSL *s) | |
2513 | { | |
2514 | if (s->version == TLS1_2_VERSION) | |
2515 | return ("TLSv1.2"); | |
2516 | else if (s->version == TLS1_1_VERSION) | |
2517 | return ("TLSv1.1"); | |
2518 | else if (s->version == TLS1_VERSION) | |
2519 | return ("TLSv1"); | |
2520 | else if (s->version == SSL3_VERSION) | |
2521 | return ("SSLv3"); | |
2522 | else if (s->version == DTLS1_BAD_VER) | |
2523 | return ("DTLSv0.9"); | |
2524 | else if (s->version == DTLS1_VERSION) | |
2525 | return ("DTLSv1"); | |
2526 | else if (s->version == DTLS1_2_VERSION) | |
2527 | return ("DTLSv1.2"); | |
2528 | else | |
2529 | return ("unknown"); | |
2530 | } | |
2531 | ||
2532 | SSL *SSL_dup(SSL *s) | |
2533 | { | |
2534 | STACK_OF(X509_NAME) *sk; | |
2535 | X509_NAME *xn; | |
2536 | SSL *ret; | |
2537 | int i; | |
2538 | ||
2539 | if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) | |
2540 | return (NULL); | |
2541 | ||
2542 | ret->version = s->version; | |
2543 | ret->type = s->type; | |
2544 | ret->method = s->method; | |
2545 | ||
2546 | if (s->session != NULL) { | |
2547 | /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ | |
2548 | if (!SSL_copy_session_id(ret, s)) | |
2549 | goto err; | |
2550 | } else { | |
2551 | /* | |
2552 | * No session has been established yet, so we have to expect that | |
2553 | * s->cert or ret->cert will be changed later -- they should not both | |
2554 | * point to the same object, and thus we can't use | |
2555 | * SSL_copy_session_id. | |
2556 | */ | |
2557 | ||
2558 | ret->method->ssl_free(ret); | |
2559 | ret->method = s->method; | |
2560 | ret->method->ssl_new(ret); | |
2561 | ||
2562 | if (s->cert != NULL) { | |
2563 | ssl_cert_free(ret->cert); | |
2564 | ret->cert = ssl_cert_dup(s->cert); | |
2565 | if (ret->cert == NULL) | |
2566 | goto err; | |
2567 | } | |
2568 | ||
2569 | if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length)) | |
2570 | goto err; | |
2571 | } | |
2572 | ||
2573 | ret->options = s->options; | |
2574 | ret->mode = s->mode; | |
2575 | SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); | |
2576 | SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); | |
2577 | ret->msg_callback = s->msg_callback; | |
2578 | ret->msg_callback_arg = s->msg_callback_arg; | |
2579 | SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); | |
2580 | SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); | |
2581 | ret->generate_session_id = s->generate_session_id; | |
2582 | ||
2583 | SSL_set_info_callback(ret, SSL_get_info_callback(s)); | |
2584 | ||
2585 | ret->debug = s->debug; | |
2586 | ||
2587 | /* copy app data, a little dangerous perhaps */ | |
2588 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) | |
2589 | goto err; | |
2590 | ||
2591 | /* setup rbio, and wbio */ | |
2592 | if (s->rbio != NULL) { | |
2593 | if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) | |
2594 | goto err; | |
2595 | } | |
2596 | if (s->wbio != NULL) { | |
2597 | if (s->wbio != s->rbio) { | |
2598 | if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) | |
2599 | goto err; | |
2600 | } else | |
2601 | ret->wbio = ret->rbio; | |
2602 | } | |
2603 | ret->rwstate = s->rwstate; | |
2604 | ret->in_handshake = s->in_handshake; | |
2605 | ret->handshake_func = s->handshake_func; | |
2606 | ret->server = s->server; | |
2607 | ret->renegotiate = s->renegotiate; | |
2608 | ret->new_session = s->new_session; | |
2609 | ret->quiet_shutdown = s->quiet_shutdown; | |
2610 | ret->shutdown = s->shutdown; | |
2611 | ret->state = s->state; /* SSL_dup does not really work at any state, | |
2612 | * though */ | |
2613 | RECORD_LAYER_dup(&ret->rlayer, &s->rlayer); | |
2614 | ret->init_num = 0; /* would have to copy ret->init_buf, | |
2615 | * ret->init_msg, ret->init_num, | |
2616 | * ret->init_off */ | |
2617 | ret->hit = s->hit; | |
2618 | ||
2619 | X509_VERIFY_PARAM_inherit(ret->param, s->param); | |
2620 | ||
2621 | /* dup the cipher_list and cipher_list_by_id stacks */ | |
2622 | if (s->cipher_list != NULL) { | |
2623 | if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) | |
2624 | goto err; | |
2625 | } | |
2626 | if (s->cipher_list_by_id != NULL) | |
2627 | if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) | |
2628 | == NULL) | |
2629 | goto err; | |
2630 | ||
2631 | /* Dup the client_CA list */ | |
2632 | if (s->client_CA != NULL) { | |
2633 | if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) | |
2634 | goto err; | |
2635 | ret->client_CA = sk; | |
2636 | for (i = 0; i < sk_X509_NAME_num(sk); i++) { | |
2637 | xn = sk_X509_NAME_value(sk, i); | |
2638 | if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { | |
2639 | X509_NAME_free(xn); | |
2640 | goto err; | |
2641 | } | |
2642 | } | |
2643 | } | |
2644 | return ret; | |
2645 | ||
2646 | err: | |
2647 | SSL_free(ret); | |
2648 | return NULL; | |
2649 | } | |
2650 | ||
2651 | void ssl_clear_cipher_ctx(SSL *s) | |
2652 | { | |
2653 | if (s->enc_read_ctx != NULL) { | |
2654 | EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); | |
2655 | OPENSSL_free(s->enc_read_ctx); | |
2656 | s->enc_read_ctx = NULL; | |
2657 | } | |
2658 | if (s->enc_write_ctx != NULL) { | |
2659 | EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); | |
2660 | OPENSSL_free(s->enc_write_ctx); | |
2661 | s->enc_write_ctx = NULL; | |
2662 | } | |
2663 | #ifndef OPENSSL_NO_COMP | |
2664 | COMP_CTX_free(s->expand); | |
2665 | s->expand = NULL; | |
2666 | COMP_CTX_free(s->compress); | |
2667 | s->compress = NULL; | |
2668 | #endif | |
2669 | } | |
2670 | ||
2671 | X509 *SSL_get_certificate(const SSL *s) | |
2672 | { | |
2673 | if (s->cert != NULL) | |
2674 | return (s->cert->key->x509); | |
2675 | else | |
2676 | return (NULL); | |
2677 | } | |
2678 | ||
2679 | EVP_PKEY *SSL_get_privatekey(const SSL *s) | |
2680 | { | |
2681 | if (s->cert != NULL) | |
2682 | return (s->cert->key->privatekey); | |
2683 | else | |
2684 | return (NULL); | |
2685 | } | |
2686 | ||
2687 | X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) | |
2688 | { | |
2689 | if (ctx->cert != NULL) | |
2690 | return ctx->cert->key->x509; | |
2691 | else | |
2692 | return NULL; | |
2693 | } | |
2694 | ||
2695 | EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) | |
2696 | { | |
2697 | if (ctx->cert != NULL) | |
2698 | return ctx->cert->key->privatekey; | |
2699 | else | |
2700 | return NULL; | |
2701 | } | |
2702 | ||
2703 | const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) | |
2704 | { | |
2705 | if ((s->session != NULL) && (s->session->cipher != NULL)) | |
2706 | return (s->session->cipher); | |
2707 | return (NULL); | |
2708 | } | |
2709 | ||
2710 | const COMP_METHOD *SSL_get_current_compression(SSL *s) | |
2711 | { | |
2712 | #ifndef OPENSSL_NO_COMP | |
2713 | return s->compress ? COMP_CTX_get_method(s->compress) : NULL; | |
2714 | #else | |
2715 | return NULL; | |
2716 | #endif | |
2717 | } | |
2718 | ||
2719 | const COMP_METHOD *SSL_get_current_expansion(SSL *s) | |
2720 | { | |
2721 | #ifndef OPENSSL_NO_COMP | |
2722 | return s->expand ? COMP_CTX_get_method(s->expand) : NULL; | |
2723 | #else | |
2724 | return NULL; | |
2725 | #endif | |
2726 | } | |
2727 | ||
2728 | int ssl_init_wbio_buffer(SSL *s, int push) | |
2729 | { | |
2730 | BIO *bbio; | |
2731 | ||
2732 | if (s->bbio == NULL) { | |
2733 | bbio = BIO_new(BIO_f_buffer()); | |
2734 | if (bbio == NULL) | |
2735 | return (0); | |
2736 | s->bbio = bbio; | |
2737 | } else { | |
2738 | bbio = s->bbio; | |
2739 | if (s->bbio == s->wbio) | |
2740 | s->wbio = BIO_pop(s->wbio); | |
2741 | } | |
2742 | (void)BIO_reset(bbio); | |
2743 | /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ | |
2744 | if (!BIO_set_read_buffer_size(bbio, 1)) { | |
2745 | SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); | |
2746 | return (0); | |
2747 | } | |
2748 | if (push) { | |
2749 | if (s->wbio != bbio) | |
2750 | s->wbio = BIO_push(bbio, s->wbio); | |
2751 | } else { | |
2752 | if (s->wbio == bbio) | |
2753 | s->wbio = BIO_pop(bbio); | |
2754 | } | |
2755 | return (1); | |
2756 | } | |
2757 | ||
2758 | void ssl_free_wbio_buffer(SSL *s) | |
2759 | { | |
2760 | /* callers ensure s is never null */ | |
2761 | if (s->bbio == NULL) | |
2762 | return; | |
2763 | ||
2764 | if (s->bbio == s->wbio) { | |
2765 | /* remove buffering */ | |
2766 | s->wbio = BIO_pop(s->wbio); | |
2767 | #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids | |
2768 | * adding one more preprocessor symbol */ | |
2769 | assert(s->wbio != NULL); | |
2770 | #endif | |
2771 | } | |
2772 | BIO_free(s->bbio); | |
2773 | s->bbio = NULL; | |
2774 | } | |
2775 | ||
2776 | void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) | |
2777 | { | |
2778 | ctx->quiet_shutdown = mode; | |
2779 | } | |
2780 | ||
2781 | int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) | |
2782 | { | |
2783 | return (ctx->quiet_shutdown); | |
2784 | } | |
2785 | ||
2786 | void SSL_set_quiet_shutdown(SSL *s, int mode) | |
2787 | { | |
2788 | s->quiet_shutdown = mode; | |
2789 | } | |
2790 | ||
2791 | int SSL_get_quiet_shutdown(const SSL *s) | |
2792 | { | |
2793 | return (s->quiet_shutdown); | |
2794 | } | |
2795 | ||
2796 | void SSL_set_shutdown(SSL *s, int mode) | |
2797 | { | |
2798 | s->shutdown = mode; | |
2799 | } | |
2800 | ||
2801 | int SSL_get_shutdown(const SSL *s) | |
2802 | { | |
2803 | return (s->shutdown); | |
2804 | } | |
2805 | ||
2806 | int SSL_version(const SSL *s) | |
2807 | { | |
2808 | return (s->version); | |
2809 | } | |
2810 | ||
2811 | SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) | |
2812 | { | |
2813 | return (ssl->ctx); | |
2814 | } | |
2815 | ||
2816 | SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) | |
2817 | { | |
2818 | CERT *new_cert; | |
2819 | if (ssl->ctx == ctx) | |
2820 | return ssl->ctx; | |
2821 | #ifndef OPENSSL_NO_TLSEXT | |
2822 | if (ctx == NULL) | |
2823 | ctx = ssl->initial_ctx; | |
2824 | #endif | |
2825 | new_cert = ssl_cert_dup(ctx->cert); | |
2826 | if (new_cert == NULL) { | |
2827 | return NULL; | |
2828 | } | |
2829 | /* Preserve any already negotiated parameters */ | |
2830 | if (ssl->server) { | |
2831 | new_cert->peer_sigalgs = ssl->cert->peer_sigalgs; | |
2832 | new_cert->peer_sigalgslen = ssl->cert->peer_sigalgslen; | |
2833 | ssl->cert->peer_sigalgs = NULL; | |
2834 | new_cert->ciphers_raw = ssl->cert->ciphers_raw; | |
2835 | new_cert->ciphers_rawlen = ssl->cert->ciphers_rawlen; | |
2836 | ssl->cert->ciphers_raw = NULL; | |
2837 | } | |
2838 | ssl_cert_free(ssl->cert); | |
2839 | ssl->cert = new_cert; | |
2840 | ||
2841 | /* | |
2842 | * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), | |
2843 | * so setter APIs must prevent invalid lengths from entering the system. | |
2844 | */ | |
2845 | OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); | |
2846 | ||
2847 | /* | |
2848 | * If the session ID context matches that of the parent SSL_CTX, | |
2849 | * inherit it from the new SSL_CTX as well. If however the context does | |
2850 | * not match (i.e., it was set per-ssl with SSL_set_session_id_context), | |
2851 | * leave it unchanged. | |
2852 | */ | |
2853 | if ((ssl->ctx != NULL) && | |
2854 | (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && | |
2855 | (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { | |
2856 | ssl->sid_ctx_length = ctx->sid_ctx_length; | |
2857 | memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); | |
2858 | } | |
2859 | ||
2860 | CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); | |
2861 | SSL_CTX_free(ssl->ctx); /* decrement reference count */ | |
2862 | ssl->ctx = ctx; | |
2863 | ||
2864 | return (ssl->ctx); | |
2865 | } | |
2866 | ||
2867 | #ifndef OPENSSL_NO_STDIO | |
2868 | int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) | |
2869 | { | |
2870 | return (X509_STORE_set_default_paths(ctx->cert_store)); | |
2871 | } | |
2872 | ||
2873 | int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, | |
2874 | const char *CApath) | |
2875 | { | |
2876 | return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); | |
2877 | } | |
2878 | #endif | |
2879 | ||
2880 | void SSL_set_info_callback(SSL *ssl, | |
2881 | void (*cb) (const SSL *ssl, int type, int val)) | |
2882 | { | |
2883 | ssl->info_callback = cb; | |
2884 | } | |
2885 | ||
2886 | /* | |
2887 | * One compiler (Diab DCC) doesn't like argument names in returned function | |
2888 | * pointer. | |
2889 | */ | |
2890 | void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , | |
2891 | int /* type */ , | |
2892 | int /* val */ ) { | |
2893 | return ssl->info_callback; | |
2894 | } | |
2895 | ||
2896 | int SSL_state(const SSL *ssl) | |
2897 | { | |
2898 | return (ssl->state); | |
2899 | } | |
2900 | ||
2901 | void SSL_set_state(SSL *ssl, int state) | |
2902 | { | |
2903 | ssl->state = state; | |
2904 | } | |
2905 | ||
2906 | void SSL_set_verify_result(SSL *ssl, long arg) | |
2907 | { | |
2908 | ssl->verify_result = arg; | |
2909 | } | |
2910 | ||
2911 | long SSL_get_verify_result(const SSL *ssl) | |
2912 | { | |
2913 | return (ssl->verify_result); | |
2914 | } | |
2915 | ||
2916 | int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, | |
2917 | CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) | |
2918 | { | |
2919 | return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, | |
2920 | new_func, dup_func, free_func); | |
2921 | } | |
2922 | ||
2923 | int SSL_set_ex_data(SSL *s, int idx, void *arg) | |
2924 | { | |
2925 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
2926 | } | |
2927 | ||
2928 | void *SSL_get_ex_data(const SSL *s, int idx) | |
2929 | { | |
2930 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
2931 | } | |
2932 | ||
2933 | int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, | |
2934 | CRYPTO_EX_dup *dup_func, | |
2935 | CRYPTO_EX_free *free_func) | |
2936 | { | |
2937 | return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, | |
2938 | new_func, dup_func, free_func); | |
2939 | } | |
2940 | ||
2941 | int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) | |
2942 | { | |
2943 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
2944 | } | |
2945 | ||
2946 | void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) | |
2947 | { | |
2948 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
2949 | } | |
2950 | ||
2951 | int ssl_ok(SSL *s) | |
2952 | { | |
2953 | return (1); | |
2954 | } | |
2955 | ||
2956 | X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) | |
2957 | { | |
2958 | return (ctx->cert_store); | |
2959 | } | |
2960 | ||
2961 | void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) | |
2962 | { | |
2963 | X509_STORE_free(ctx->cert_store); | |
2964 | ctx->cert_store = store; | |
2965 | } | |
2966 | ||
2967 | int SSL_want(const SSL *s) | |
2968 | { | |
2969 | return (s->rwstate); | |
2970 | } | |
2971 | ||
2972 | /** | |
2973 | * \brief Set the callback for generating temporary RSA keys. | |
2974 | * \param ctx the SSL context. | |
2975 | * \param cb the callback | |
2976 | */ | |
2977 | ||
2978 | #ifndef OPENSSL_NO_RSA | |
2979 | void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl, | |
2980 | int is_export, | |
2981 | int keylength)) | |
2982 | { | |
2983 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); | |
2984 | } | |
2985 | ||
2986 | void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl, | |
2987 | int is_export, | |
2988 | int keylength)) | |
2989 | { | |
2990 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); | |
2991 | } | |
2992 | #endif | |
2993 | ||
2994 | #ifdef DOXYGEN | |
2995 | /** | |
2996 | * \brief The RSA temporary key callback function. | |
2997 | * \param ssl the SSL session. | |
2998 | * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. | |
2999 | * \param keylength if \c is_export is \c TRUE, then \c keylength is the size | |
3000 | * of the required key in bits. | |
3001 | * \return the temporary RSA key. | |
3002 | * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback | |
3003 | */ | |
3004 | ||
3005 | RSA *cb(SSL *ssl, int is_export, int keylength) | |
3006 | { | |
3007 | } | |
3008 | #endif | |
3009 | ||
3010 | /** | |
3011 | * \brief Set the callback for generating temporary DH keys. | |
3012 | * \param ctx the SSL context. | |
3013 | * \param dh the callback | |
3014 | */ | |
3015 | ||
3016 | #ifndef OPENSSL_NO_DH | |
3017 | void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, | |
3018 | DH *(*dh) (SSL *ssl, int is_export, | |
3019 | int keylength)) | |
3020 | { | |
3021 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3022 | } | |
3023 | ||
3024 | void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, | |
3025 | int keylength)) | |
3026 | { | |
3027 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); | |
3028 | } | |
3029 | #endif | |
3030 | ||
3031 | #ifndef OPENSSL_NO_EC | |
3032 | void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, | |
3033 | EC_KEY *(*ecdh) (SSL *ssl, int is_export, | |
3034 | int keylength)) | |
3035 | { | |
3036 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, | |
3037 | (void (*)(void))ecdh); | |
3038 | } | |
3039 | ||
3040 | void SSL_set_tmp_ecdh_callback(SSL *ssl, | |
3041 | EC_KEY *(*ecdh) (SSL *ssl, int is_export, | |
3042 | int keylength)) | |
3043 | { | |
3044 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh); | |
3045 | } | |
3046 | #endif | |
3047 | ||
3048 | #ifndef OPENSSL_NO_PSK | |
3049 | int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) | |
3050 | { | |
3051 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3052 | SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, | |
3053 | SSL_R_DATA_LENGTH_TOO_LONG); | |
3054 | return 0; | |
3055 | } | |
3056 | OPENSSL_free(ctx->psk_identity_hint); | |
3057 | if (identity_hint != NULL) { | |
3058 | ctx->psk_identity_hint = BUF_strdup(identity_hint); | |
3059 | if (ctx->psk_identity_hint == NULL) | |
3060 | return 0; | |
3061 | } else | |
3062 | ctx->psk_identity_hint = NULL; | |
3063 | return 1; | |
3064 | } | |
3065 | ||
3066 | int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) | |
3067 | { | |
3068 | if (s == NULL) | |
3069 | return 0; | |
3070 | ||
3071 | if (s->session == NULL) | |
3072 | return 1; /* session not created yet, ignored */ | |
3073 | ||
3074 | if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { | |
3075 | SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); | |
3076 | return 0; | |
3077 | } | |
3078 | OPENSSL_free(s->session->psk_identity_hint); | |
3079 | if (identity_hint != NULL) { | |
3080 | s->session->psk_identity_hint = BUF_strdup(identity_hint); | |
3081 | if (s->session->psk_identity_hint == NULL) | |
3082 | return 0; | |
3083 | } else | |
3084 | s->session->psk_identity_hint = NULL; | |
3085 | return 1; | |
3086 | } | |
3087 | ||
3088 | const char *SSL_get_psk_identity_hint(const SSL *s) | |
3089 | { | |
3090 | if (s == NULL || s->session == NULL) | |
3091 | return NULL; | |
3092 | return (s->session->psk_identity_hint); | |
3093 | } | |
3094 | ||
3095 | const char *SSL_get_psk_identity(const SSL *s) | |
3096 | { | |
3097 | if (s == NULL || s->session == NULL) | |
3098 | return NULL; | |
3099 | return (s->session->psk_identity); | |
3100 | } | |
3101 | ||
3102 | void SSL_set_psk_client_callback(SSL *s, | |
3103 | unsigned int (*cb) (SSL *ssl, | |
3104 | const char *hint, | |
3105 | char *identity, | |
3106 | unsigned int | |
3107 | max_identity_len, | |
3108 | unsigned char *psk, | |
3109 | unsigned int | |
3110 | max_psk_len)) | |
3111 | { | |
3112 | s->psk_client_callback = cb; | |
3113 | } | |
3114 | ||
3115 | void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, | |
3116 | unsigned int (*cb) (SSL *ssl, | |
3117 | const char *hint, | |
3118 | char *identity, | |
3119 | unsigned int | |
3120 | max_identity_len, | |
3121 | unsigned char *psk, | |
3122 | unsigned int | |
3123 | max_psk_len)) | |
3124 | { | |
3125 | ctx->psk_client_callback = cb; | |
3126 | } | |
3127 | ||
3128 | void SSL_set_psk_server_callback(SSL *s, | |
3129 | unsigned int (*cb) (SSL *ssl, | |
3130 | const char *identity, | |
3131 | unsigned char *psk, | |
3132 | unsigned int | |
3133 | max_psk_len)) | |
3134 | { | |
3135 | s->psk_server_callback = cb; | |
3136 | } | |
3137 | ||
3138 | void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, | |
3139 | unsigned int (*cb) (SSL *ssl, | |
3140 | const char *identity, | |
3141 | unsigned char *psk, | |
3142 | unsigned int | |
3143 | max_psk_len)) | |
3144 | { | |
3145 | ctx->psk_server_callback = cb; | |
3146 | } | |
3147 | #endif | |
3148 | ||
3149 | void SSL_CTX_set_msg_callback(SSL_CTX *ctx, | |
3150 | void (*cb) (int write_p, int version, | |
3151 | int content_type, const void *buf, | |
3152 | size_t len, SSL *ssl, void *arg)) | |
3153 | { | |
3154 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
3155 | } | |
3156 | ||
3157 | void SSL_set_msg_callback(SSL *ssl, | |
3158 | void (*cb) (int write_p, int version, | |
3159 | int content_type, const void *buf, | |
3160 | size_t len, SSL *ssl, void *arg)) | |
3161 | { | |
3162 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); | |
3163 | } | |
3164 | ||
3165 | void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, | |
3166 | int (*cb) (SSL *ssl, | |
3167 | int | |
3168 | is_forward_secure)) | |
3169 | { | |
3170 | SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
3171 | (void (*)(void))cb); | |
3172 | } | |
3173 | ||
3174 | void SSL_set_not_resumable_session_callback(SSL *ssl, | |
3175 | int (*cb) (SSL *ssl, | |
3176 | int is_forward_secure)) | |
3177 | { | |
3178 | SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB, | |
3179 | (void (*)(void))cb); | |
3180 | } | |
3181 | ||
3182 | /* | |
3183 | * Allocates new EVP_MD_CTX and sets pointer to it into given pointer | |
3184 | * vairable, freeing EVP_MD_CTX previously stored in that variable, if any. | |
3185 | * If EVP_MD pointer is passed, initializes ctx with this md Returns newly | |
3186 | * allocated ctx; | |
3187 | */ | |
3188 | ||
3189 | EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) | |
3190 | { | |
3191 | ssl_clear_hash_ctx(hash); | |
3192 | *hash = EVP_MD_CTX_create(); | |
3193 | if (md) | |
3194 | EVP_DigestInit_ex(*hash, md, NULL); | |
3195 | return *hash; | |
3196 | } | |
3197 | ||
3198 | void ssl_clear_hash_ctx(EVP_MD_CTX **hash) | |
3199 | { | |
3200 | ||
3201 | if (*hash) | |
3202 | EVP_MD_CTX_destroy(*hash); | |
3203 | *hash = NULL; | |
3204 | } | |
3205 | ||
3206 | /* Retrieve handshake hashes */ | |
3207 | int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen) | |
3208 | { | |
3209 | unsigned char *p = out; | |
3210 | int idx, ret = 0; | |
3211 | long mask; | |
3212 | EVP_MD_CTX ctx; | |
3213 | const EVP_MD *md; | |
3214 | EVP_MD_CTX_init(&ctx); | |
3215 | for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) { | |
3216 | if (mask & ssl_get_algorithm2(s)) { | |
3217 | int hashsize = EVP_MD_size(md); | |
3218 | EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx]; | |
3219 | if (!hdgst || hashsize < 0 || hashsize > outlen) | |
3220 | goto err; | |
3221 | if (!EVP_MD_CTX_copy_ex(&ctx, hdgst)) | |
3222 | goto err; | |
3223 | if (!EVP_DigestFinal_ex(&ctx, p, NULL)) | |
3224 | goto err; | |
3225 | p += hashsize; | |
3226 | outlen -= hashsize; | |
3227 | } | |
3228 | } | |
3229 | ret = p - out; | |
3230 | err: | |
3231 | EVP_MD_CTX_cleanup(&ctx); | |
3232 | return ret; | |
3233 | } | |
3234 | ||
3235 | void SSL_set_debug(SSL *s, int debug) | |
3236 | { | |
3237 | s->debug = debug; | |
3238 | } | |
3239 | ||
3240 | int SSL_cache_hit(SSL *s) | |
3241 | { | |
3242 | return s->hit; | |
3243 | } | |
3244 | ||
3245 | int SSL_is_server(SSL *s) | |
3246 | { | |
3247 | return s->server; | |
3248 | } | |
3249 | ||
3250 | void SSL_set_security_level(SSL *s, int level) | |
3251 | { | |
3252 | s->cert->sec_level = level; | |
3253 | } | |
3254 | ||
3255 | int SSL_get_security_level(const SSL *s) | |
3256 | { | |
3257 | return s->cert->sec_level; | |
3258 | } | |
3259 | ||
3260 | void SSL_set_security_callback(SSL *s, | |
3261 | int (*cb) (SSL *s, SSL_CTX *ctx, int op, | |
3262 | int bits, int nid, void *other, | |
3263 | void *ex)) | |
3264 | { | |
3265 | s->cert->sec_cb = cb; | |
3266 | } | |
3267 | ||
3268 | int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op, | |
3269 | int bits, int nid, | |
3270 | void *other, void *ex) { | |
3271 | return s->cert->sec_cb; | |
3272 | } | |
3273 | ||
3274 | void SSL_set0_security_ex_data(SSL *s, void *ex) | |
3275 | { | |
3276 | s->cert->sec_ex = ex; | |
3277 | } | |
3278 | ||
3279 | void *SSL_get0_security_ex_data(const SSL *s) | |
3280 | { | |
3281 | return s->cert->sec_ex; | |
3282 | } | |
3283 | ||
3284 | void SSL_CTX_set_security_level(SSL_CTX *ctx, int level) | |
3285 | { | |
3286 | ctx->cert->sec_level = level; | |
3287 | } | |
3288 | ||
3289 | int SSL_CTX_get_security_level(const SSL_CTX *ctx) | |
3290 | { | |
3291 | return ctx->cert->sec_level; | |
3292 | } | |
3293 | ||
3294 | void SSL_CTX_set_security_callback(SSL_CTX *ctx, | |
3295 | int (*cb) (SSL *s, SSL_CTX *ctx, int op, | |
3296 | int bits, int nid, void *other, | |
3297 | void *ex)) | |
3298 | { | |
3299 | ctx->cert->sec_cb = cb; | |
3300 | } | |
3301 | ||
3302 | int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s, | |
3303 | SSL_CTX *ctx, | |
3304 | int op, int bits, | |
3305 | int nid, | |
3306 | void *other, | |
3307 | void *ex) { | |
3308 | return ctx->cert->sec_cb; | |
3309 | } | |
3310 | ||
3311 | void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex) | |
3312 | { | |
3313 | ctx->cert->sec_ex = ex; | |
3314 | } | |
3315 | ||
3316 | void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx) | |
3317 | { | |
3318 | return ctx->cert->sec_ex; | |
3319 | } | |
3320 | ||
3321 | IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); |