ssl_lib.c 96.4 KB
Newer Older
1 2
/*
 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
3
 */
4
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 6 7 8 9
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
10
 *
11 12 13 14 15 16
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17
 *
18 19 20 21 22 23
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
24
 *
25 26 27 28 29 30 31 32 33 34 35 36 37 38
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
39
 * 4. If you include any Windows specific code (or a derivative thereof) from
40 41
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42
 *
43 44 45 46 47 48 49 50 51 52 53
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
54
 *
55 56 57 58 59
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
60
/* ====================================================================
61
 * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
62 63 64 65 66 67
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
68
 *    notice, this list of conditions and the following disclaimer.
69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
B
Bodo Möller 已提交
113 114
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115
 * ECC cipher suite support in OpenSSL originally developed by
B
Bodo Möller 已提交
116 117
 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
/* ====================================================================
 * Copyright 2005 Nokia. All rights reserved.
 *
 * The portions of the attached software ("Contribution") is developed by
 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 * license.
 *
 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 * support (see RFC 4279) to OpenSSL.
 *
 * No patent licenses or other rights except those expressly stated in
 * the OpenSSL open source license shall be deemed granted or received
 * expressly, by implication, estoppel, or otherwise.
 *
 * No assurances are provided by Nokia that the Contribution does not
 * infringe the patent or other intellectual property rights of any third
 * party or that the license provides you with all the necessary rights
 * to make use of the Contribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 * OTHERWISE.
 */
144

B
Bodo Möller 已提交
145
#ifdef REF_CHECK
146
# include <assert.h>
B
Bodo Möller 已提交
147
#endif
148
#include <stdio.h>
149
#include "ssl_locl.h"
150 151
#include <openssl/objects.h>
#include <openssl/lhash.h>
152
#include <openssl/x509v3.h>
153
#include <openssl/rand.h>
154
#include <openssl/ocsp.h>
N
make  
Nils Larsch 已提交
155
#ifndef OPENSSL_NO_DH
156
# include <openssl/dh.h>
N
make  
Nils Larsch 已提交
157
#endif
158
#ifndef OPENSSL_NO_ENGINE
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187
# include <openssl/engine.h>
#endif

const char *SSL_version_str = OPENSSL_VERSION_TEXT;

SSL3_ENC_METHOD ssl3_undef_enc_method = {
    /*
     * evil casts, but these functions are only called if there's a library
     * bug
     */
    (int (*)(SSL *, int))ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
    ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, unsigned char *, int))
        ssl_undefined_function,
    (int (*)(SSL *, int))ssl_undefined_function,
    (int (*)(SSL *, const char *, int, unsigned char *))
        ssl_undefined_function,
    0,                          /* finish_mac_length */
    (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
    NULL,                       /* client_finished_label */
    0,                          /* client_finished_label_len */
    NULL,                       /* server_finished_label */
    0,                          /* server_finished_label_len */
    (int (*)(int))ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, size_t, const char *,
             size_t, const unsigned char *, size_t,
             int use_context))ssl_undefined_function,
};
188

R
Rich Salz 已提交
189 190 191 192 193 194 195 196
static void clear_ciphers(SSL *s)
{
    /* clear the current cipher */
    ssl_clear_cipher_ctx(s);
    ssl_clear_hash_ctx(&s->read_hash);
    ssl_clear_hash_ctx(&s->write_hash);
}

197
int SSL_clear(SSL *s)
198 199 200 201 202
{
    if (s->method == NULL) {
        SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
        return (0);
    }
203

204 205 206 207
    if (ssl_clear_bad_session(s)) {
        SSL_SESSION_free(s->session);
        s->session = NULL;
    }
L
Lutz Jänicke 已提交
208

209 210 211
    s->error = 0;
    s->hit = 0;
    s->shutdown = 0;
212

213 214 215 216
    if (s->renegotiate) {
        SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
        return 0;
    }
217

218
    s->type = 0;
219

220
    s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
221

222 223 224
    s->version = s->method->version;
    s->client_version = s->version;
    s->rwstate = SSL_NOTHING;
225

R
Rich Salz 已提交
226 227
    BUF_MEM_free(s->init_buf);
    s->init_buf = NULL;
R
Rich Salz 已提交
228
    clear_ciphers(s);
229
    s->first_packet = 0;
230

231 232 233 234 235 236 237 238 239 240 241 242
    /*
     * Check to see if we were changed into a different method, if so, revert
     * back if we are not doing session-id reuse.
     */
    if (!s->in_handshake && (s->session == NULL)
        && (s->method != s->ctx->method)) {
        s->method->ssl_free(s);
        s->method = s->ctx->method;
        if (!s->method->ssl_new(s))
            return (0);
    } else
        s->method->ssl_clear(s);
M
Matt Caswell 已提交
243

244
    RECORD_LAYER_clear(&s->rlayer);
M
Matt Caswell 已提交
245

246 247
    return (1);
}
248

249
/** Used to change an SSL_CTXs default SSL method type */
250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
{
    STACK_OF(SSL_CIPHER) *sk;

    ctx->method = meth;

    sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
                                &(ctx->cipher_list_by_id),
                                SSL_DEFAULT_CIPHER_LIST, ctx->cert);
    if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
        SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
               SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
        return (0);
    }
    return (1);
}
266

267
SSL *SSL_new(SSL_CTX *ctx)
268 269 270 271 272 273 274 275 276 277 278 279
{
    SSL *s;

    if (ctx == NULL) {
        SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
        return (NULL);
    }
    if (ctx->method == NULL) {
        SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
        return (NULL);
    }

R
Rich Salz 已提交
280
    s = OPENSSL_malloc(sizeof(*s));
281 282
    if (s == NULL)
        goto err;
283
    memset(s, 0, sizeof(*s));
284

285
    RECORD_LAYER_init(&s->rlayer, s);
286

287 288 289 290
    s->options = ctx->options;
    s->mode = ctx->mode;
    s->max_cert_list = ctx->max_cert_list;

K
Kurt Roeckx 已提交
291 292 293 294 295 296 297 298 299 300 301 302
    /*
     * Earlier library versions used to copy the pointer to the CERT, not
     * its contents; only when setting new parameters for the per-SSL
     * copy, ssl_cert_new would be called (and the direct reference to
     * the per-SSL_CTX settings would be lost, but those still were
     * indirectly accessed for various purposes, and for that reason they
     * used to be known as s->ctx->default_cert). Now we don't look at the
     * SSL_CTX's CERT after having duplicated it once.
     */
    s->cert = ssl_cert_dup(ctx->cert);
    if (s->cert == NULL)
        goto err;
303

304
    RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
    s->msg_callback = ctx->msg_callback;
    s->msg_callback_arg = ctx->msg_callback_arg;
    s->verify_mode = ctx->verify_mode;
    s->not_resumable_session_cb = ctx->not_resumable_session_cb;
    s->sid_ctx_length = ctx->sid_ctx_length;
    OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
    memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
    s->verify_callback = ctx->default_verify_callback;
    s->generate_session_id = ctx->generate_session_id;

    s->param = X509_VERIFY_PARAM_new();
    if (!s->param)
        goto err;
    X509_VERIFY_PARAM_inherit(s->param, ctx->param);
    s->quiet_shutdown = ctx->quiet_shutdown;
    s->max_send_fragment = ctx->max_send_fragment;
321

322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354
    CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
    s->ctx = ctx;
    s->tlsext_debug_cb = 0;
    s->tlsext_debug_arg = NULL;
    s->tlsext_ticket_expected = 0;
    s->tlsext_status_type = -1;
    s->tlsext_status_expected = 0;
    s->tlsext_ocsp_ids = NULL;
    s->tlsext_ocsp_exts = NULL;
    s->tlsext_ocsp_resp = NULL;
    s->tlsext_ocsp_resplen = -1;
    CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
    s->initial_ctx = ctx;
# ifndef OPENSSL_NO_EC
    if (ctx->tlsext_ecpointformatlist) {
        s->tlsext_ecpointformatlist =
            BUF_memdup(ctx->tlsext_ecpointformatlist,
                       ctx->tlsext_ecpointformatlist_length);
        if (!s->tlsext_ecpointformatlist)
            goto err;
        s->tlsext_ecpointformatlist_length =
            ctx->tlsext_ecpointformatlist_length;
    }
    if (ctx->tlsext_ellipticcurvelist) {
        s->tlsext_ellipticcurvelist =
            BUF_memdup(ctx->tlsext_ellipticcurvelist,
                       ctx->tlsext_ellipticcurvelist_length);
        if (!s->tlsext_ellipticcurvelist)
            goto err;
        s->tlsext_ellipticcurvelist_length =
            ctx->tlsext_ellipticcurvelist_length;
    }
# endif
B
Ben Laurie 已提交
355
# ifndef OPENSSL_NO_NEXTPROTONEG
356
    s->next_proto_negotiated = NULL;
B
Ben Laurie 已提交
357
# endif
A
Adam Langley 已提交
358

359 360 361 362 363 364 365 366 367
    if (s->ctx->alpn_client_proto_list) {
        s->alpn_client_proto_list =
            OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
        if (s->alpn_client_proto_list == NULL)
            goto err;
        memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
               s->ctx->alpn_client_proto_list_len);
        s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
    }
368

369
    s->verify_result = X509_V_OK;
370

371
    s->method = ctx->method;
372

373 374
    if (!s->method->ssl_new(s))
        goto err;
375

376 377
    s->references = 1;
    s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
378

V
Viktor Dukhovni 已提交
379
    if (!SSL_clear(s))
M
Matt Caswell 已提交
380
        goto err;
381

382
    CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
383

384
#ifndef OPENSSL_NO_PSK
385 386
    s->psk_client_callback = ctx->psk_client_callback;
    s->psk_server_callback = ctx->psk_server_callback;
387 388
#endif

389 390
    return (s);
 err:
R
Rich Salz 已提交
391
    SSL_free(s);
392 393 394
    SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
    return (NULL);
}
395

396 397 398 399 400 401 402 403 404 405
int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
                                   unsigned int sid_ctx_len)
{
    if (sid_ctx_len > sizeof ctx->sid_ctx) {
        SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
               SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
        return 0;
    }
    ctx->sid_ctx_length = sid_ctx_len;
    memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
406 407

    return 1;
408
}
409

410 411 412 413 414 415 416 417 418 419
int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
                               unsigned int sid_ctx_len)
{
    if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
        SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
               SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
        return 0;
    }
    ssl->sid_ctx_length = sid_ctx_len;
    memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
B
Ben Laurie 已提交
420 421

    return 1;
422
}
B
Ben Laurie 已提交
423

424
int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
425 426 427 428 429 430
{
    CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
    ctx->generate_session_id = cb;
    CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
    return 1;
}
431 432

int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
433 434 435 436 437 438
{
    CRYPTO_w_lock(CRYPTO_LOCK_SSL);
    ssl->generate_session_id = cb;
    CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
    return 1;
}
439

440
int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463
                                unsigned int id_len)
{
    /*
     * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
     * we can "construct" a session to give us the desired check - ie. to
     * find if there's a session in the hash table that would conflict with
     * any new session built out of this id/id_len and the ssl_version in use
     * by this SSL.
     */
    SSL_SESSION r, *p;

    if (id_len > sizeof r.session_id)
        return 0;

    r.ssl_version = ssl->version;
    r.session_id_length = id_len;
    memcpy(r.session_id, id, id_len);

    CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
    p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
    CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
    return (p != NULL);
}
464

465
int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
466 467 468
{
    return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
}
469 470

int SSL_set_purpose(SSL *s, int purpose)
471 472 473
{
    return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
}
D
 
Dr. Stephen Henson 已提交
474

475
int SSL_CTX_set_trust(SSL_CTX *s, int trust)
476 477 478
{
    return X509_VERIFY_PARAM_set_trust(s->param, trust);
}
479 480

int SSL_set_trust(SSL *s, int trust)
481 482 483
{
    return X509_VERIFY_PARAM_set_trust(s->param, trust);
}
484

D
Dr. Stephen Henson 已提交
485
int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
486 487 488
{
    return X509_VERIFY_PARAM_set1(ctx->param, vpm);
}
D
Dr. Stephen Henson 已提交
489 490

int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
491 492 493
{
    return X509_VERIFY_PARAM_set1(ssl->param, vpm);
}
D
Dr. Stephen Henson 已提交
494

495
X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
496 497 498
{
    return ctx->param;
}
499 500

X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
501 502 503
{
    return ssl->param;
}
504

505
void SSL_certs_clear(SSL *s)
506 507 508
{
    ssl_cert_clear_certs(s->cert);
}
509

510
void SSL_free(SSL *s)
511 512
{
    int i;
513

514 515
    if (s == NULL)
        return;
B
Ben Laurie 已提交
516

517
    i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
518
#ifdef REF_PRINT
519
    REF_PRINT("SSL", s);
520
#endif
521 522
    if (i > 0)
        return;
523
#ifdef REF_CHECK
524 525 526 527
    if (i < 0) {
        fprintf(stderr, "SSL_free, bad reference count\n");
        abort();                /* ok */
    }
528
#endif
529

R
Rich Salz 已提交
530
    X509_VERIFY_PARAM_free(s->param);
531 532 533 534 535 536 537 538 539 540
    CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);

    if (s->bbio != NULL) {
        /* If the buffering BIO is in place, pop it off */
        if (s->bbio == s->wbio) {
            s->wbio = BIO_pop(s->wbio);
        }
        BIO_free(s->bbio);
        s->bbio = NULL;
    }
R
Rich Salz 已提交
541 542
    BIO_free_all(s->rbio);
    if (s->wbio != s->rbio)
543 544
        BIO_free_all(s->wbio);

R
Rich Salz 已提交
545
    BUF_MEM_free(s->init_buf);
546 547

    /* add extra stuff */
R
Rich Salz 已提交
548 549
    sk_SSL_CIPHER_free(s->cipher_list);
    sk_SSL_CIPHER_free(s->cipher_list_by_id);
550 551 552 553 554 555 556

    /* Make the next call work :-) */
    if (s->session != NULL) {
        ssl_clear_bad_session(s);
        SSL_SESSION_free(s->session);
    }

R
Rich Salz 已提交
557
    clear_ciphers(s);
558

R
Rich Salz 已提交
559
    ssl_cert_free(s->cert);
560
    /* Free up if allocated */
561

R
Rich Salz 已提交
562
    OPENSSL_free(s->tlsext_hostname);
R
Rich Salz 已提交
563
    SSL_CTX_free(s->initial_ctx);
564
#ifndef OPENSSL_NO_EC
R
Rich Salz 已提交
565 566
    OPENSSL_free(s->tlsext_ecpointformatlist);
    OPENSSL_free(s->tlsext_ellipticcurvelist);
567
#endif                         /* OPENSSL_NO_EC */
R
Rich Salz 已提交
568
    sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
R
Rich Salz 已提交
569
    sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
R
Rich Salz 已提交
570 571
    OPENSSL_free(s->tlsext_ocsp_resp);
    OPENSSL_free(s->alpn_client_proto_list);
572

R
Rich Salz 已提交
573
    sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
574 575 576 577

    if (s->method != NULL)
        s->method->ssl_free(s);

578
    RECORD_LAYER_release(&s->rlayer);
M
Matt Caswell 已提交
579

R
Rich Salz 已提交
580
    SSL_CTX_free(s->ctx);
D
Dr. Stephen Henson 已提交
581

582
#if !defined(OPENSSL_NO_NEXTPROTONEG)
R
Rich Salz 已提交
583
    OPENSSL_free(s->next_proto_negotiated);
B
Ben Laurie 已提交
584 585
#endif

P
Piotr Sikora 已提交
586
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
587
    sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
588 589 590 591 592
#endif

    OPENSSL_free(s);
}

593 594
void SSL_set_rbio(SSL *s, BIO *rbio)
{
R
Rich Salz 已提交
595
    if (s->rbio != rbio)
596 597 598 599 600
        BIO_free_all(s->rbio);
    s->rbio = rbio;
}

void SSL_set_wbio(SSL *s, BIO *wbio)
601 602 603 604 605 606 607 608 609 610
{
    /*
     * If the output buffering BIO is still in place, remove it
     */
    if (s->bbio != NULL) {
        if (s->wbio == s->bbio) {
            s->wbio = s->wbio->next_bio;
            s->bbio->next_bio = NULL;
        }
    }
R
Rich Salz 已提交
611
    if (s->wbio != wbio && s->rbio != s->wbio)
612 613 614
        BIO_free_all(s->wbio);
    s->wbio = wbio;
}
615

616 617 618 619 620 621
void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
{
    SSL_set_wbio(s, wbio);
    SSL_set_rbio(s, rbio);
}

B
Ben Laurie 已提交
622
BIO *SSL_get_rbio(const SSL *s)
623 624 625
{
    return (s->rbio);
}
626

B
Ben Laurie 已提交
627
BIO *SSL_get_wbio(const SSL *s)
628 629 630
{
    return (s->wbio);
}
631

B
Ben Laurie 已提交
632
int SSL_get_fd(const SSL *s)
633 634 635
{
    return (SSL_get_rfd(s));
}
636

B
Ben Laurie 已提交
637
int SSL_get_rfd(const SSL *s)
638 639 640 641 642 643 644 645 646 647
{
    int ret = -1;
    BIO *b, *r;

    b = SSL_get_rbio(s);
    r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
    if (r != NULL)
        BIO_get_fd(r, &ret);
    return (ret);
}
648

B
Ben Laurie 已提交
649
int SSL_get_wfd(const SSL *s)
650 651 652 653 654 655 656 657 658 659
{
    int ret = -1;
    BIO *b, *r;

    b = SSL_get_wbio(s);
    r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
    if (r != NULL)
        BIO_get_fd(r, &ret);
    return (ret);
}
660

661
#ifndef OPENSSL_NO_SOCK
662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678
int SSL_set_fd(SSL *s, int fd)
{
    int ret = 0;
    BIO *bio = NULL;

    bio = BIO_new(BIO_s_socket());

    if (bio == NULL) {
        SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
        goto err;
    }
    BIO_set_fd(bio, fd, BIO_NOCLOSE);
    SSL_set_bio(s, bio, bio);
    ret = 1;
 err:
    return (ret);
}
679

680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723
int SSL_set_wfd(SSL *s, int fd)
{
    int ret = 0;
    BIO *bio = NULL;

    if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
        || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
        bio = BIO_new(BIO_s_socket());

        if (bio == NULL) {
            SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
            goto err;
        }
        BIO_set_fd(bio, fd, BIO_NOCLOSE);
        SSL_set_bio(s, SSL_get_rbio(s), bio);
    } else
        SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
    ret = 1;
 err:
    return (ret);
}

int SSL_set_rfd(SSL *s, int fd)
{
    int ret = 0;
    BIO *bio = NULL;

    if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
        || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
        bio = BIO_new(BIO_s_socket());

        if (bio == NULL) {
            SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
            goto err;
        }
        BIO_set_fd(bio, fd, BIO_NOCLOSE);
        SSL_set_bio(s, bio, SSL_get_wbio(s));
    } else
        SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
    ret = 1;
 err:
    return (ret);
}
#endif
724 725

/* return length of latest Finished message we sent, copy to 'buf' */
B
Ben Laurie 已提交
726
size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
727 728 729 730 731 732 733 734 735 736 737
{
    size_t ret = 0;

    if (s->s3 != NULL) {
        ret = s->s3->tmp.finish_md_len;
        if (count > ret)
            count = ret;
        memcpy(buf, s->s3->tmp.finish_md, count);
    }
    return ret;
}
738 739

/* return length of latest Finished message we expected, copy to 'buf' */
B
Ben Laurie 已提交
740
size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
741 742
{
    size_t ret = 0;
743

744 745 746 747 748 749 750 751
    if (s->s3 != NULL) {
        ret = s->s3->tmp.peer_finish_md_len;
        if (count > ret)
            count = ret;
        memcpy(buf, s->s3->tmp.peer_finish_md, count);
    }
    return ret;
}
752

B
Ben Laurie 已提交
753
int SSL_get_verify_mode(const SSL *s)
754 755 756
{
    return (s->verify_mode);
}
757

B
Ben Laurie 已提交
758
int SSL_get_verify_depth(const SSL *s)
759 760 761
{
    return X509_VERIFY_PARAM_get_depth(s->param);
}
762

763 764 765
int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
    return (s->verify_callback);
}
766

B
Ben Laurie 已提交
767
int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
768 769 770
{
    return (ctx->verify_mode);
}
771

B
Ben Laurie 已提交
772
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795
{
    return X509_VERIFY_PARAM_get_depth(ctx->param);
}

int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
    return (ctx->default_verify_callback);
}

void SSL_set_verify(SSL *s, int mode,
                    int (*callback) (int ok, X509_STORE_CTX *ctx))
{
    s->verify_mode = mode;
    if (callback != NULL)
        s->verify_callback = callback;
}

void SSL_set_verify_depth(SSL *s, int depth)
{
    X509_VERIFY_PARAM_set_depth(s->param, depth);
}

void SSL_set_read_ahead(SSL *s, int yes)
{
796
    RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
797
}
798

B
Ben Laurie 已提交
799
int SSL_get_read_ahead(const SSL *s)
800
{
801
    return RECORD_LAYER_get_read_ahead(&s->rlayer);
802
}
803

B
Ben Laurie 已提交
804
int SSL_pending(const SSL *s)
805 806 807 808 809 810 811 812 813 814
{
    /*
     * SSL_pending cannot work properly if read-ahead is enabled
     * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
     * impossible to fix since SSL_pending cannot report errors that may be
     * observed while scanning the new data. (Note that SSL_pending() is
     * often used as a boolean value, so we'd better not return -1.)
     */
    return (s->method->ssl_pending(s));
}
815

B
Ben Laurie 已提交
816
X509 *SSL_get_peer_certificate(const SSL *s)
817 818
{
    X509 *r;
819

820 821 822 823
    if ((s == NULL) || (s->session == NULL))
        r = NULL;
    else
        r = s->session->peer;
824

825 826
    if (r == NULL)
        return (r);
827

D
Dr. Stephen Henson 已提交
828
    X509_up_ref(r);
829 830 831

    return (r);
}
832

B
Ben Laurie 已提交
833
STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
834 835 836
{
    STACK_OF(X509) *r;

837
    if ((s == NULL) || (s->session == NULL))
838 839
        r = NULL;
    else
840
        r = s->session->peer_chain;
841 842 843 844 845 846 847 848 849 850 851 852 853

    /*
     * If we are a client, cert_chain includes the peer's own certificate; if
     * we are a server, it does not.
     */

    return (r);
}

/*
 * Now in theory, since the calling process own 't' it should be safe to
 * modify.  We need to be able to read f without being hassled
 */
M
Matt Caswell 已提交
854
int SSL_copy_session_id(SSL *t, const SSL *f)
855 856
{
    /* Do we need to to SSL locking? */
V
Viktor Dukhovni 已提交
857
    if (!SSL_set_session(t, SSL_get_session(f))) {
M
Matt Caswell 已提交
858
        return 0;
M
Matt Caswell 已提交
859
    }
860 861 862 863 864 865 866 867 868 869

    /*
     * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
     */
    if (t->method != f->method) {
        t->method->ssl_free(t); /* cleanup current */
        t->method = f->method;  /* change method */
        t->method->ssl_new(t);  /* setup new */
    }

K
Kurt Roeckx 已提交
870 871 872
    CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
    ssl_cert_free(t->cert);
    t->cert = f->cert;
V
Viktor Dukhovni 已提交
873
    if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
M
Matt Caswell 已提交
874
        return 0;
M
Matt Caswell 已提交
875
    }
M
Matt Caswell 已提交
876 877

    return 1;
878
}
879

880
/* Fix this so it checks all the valid key/cert options */
B
Ben Laurie 已提交
881
int SSL_CTX_check_private_key(const SSL_CTX *ctx)
882 883
{
    if ((ctx == NULL) ||
K
Kurt Roeckx 已提交
884
        (ctx->cert->key->x509 == NULL)) {
885 886 887 888 889 890 891 892 893 894 895 896
        SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
               SSL_R_NO_CERTIFICATE_ASSIGNED);
        return (0);
    }
    if (ctx->cert->key->privatekey == NULL) {
        SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
               SSL_R_NO_PRIVATE_KEY_ASSIGNED);
        return (0);
    }
    return (X509_check_private_key
            (ctx->cert->key->x509, ctx->cert->key->privatekey));
}
897

898
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
899
int SSL_check_private_key(const SSL *ssl)
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
{
    if (ssl == NULL) {
        SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
        return (0);
    }
    if (ssl->cert->key->x509 == NULL) {
        SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
        return (0);
    }
    if (ssl->cert->key->privatekey == NULL) {
        SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
        return (0);
    }
    return (X509_check_private_key(ssl->cert->key->x509,
                                   ssl->cert->key->privatekey));
}
916

917
int SSL_accept(SSL *s)
918 919 920 921
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_accept_state(s);
922

923 924
    return (s->method->ssl_accept(s));
}
925

926
int SSL_connect(SSL *s)
927 928 929 930
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_connect_state(s);
931

932 933
    return (s->method->ssl_connect(s));
}
934

B
Ben Laurie 已提交
935
long SSL_get_default_timeout(const SSL *s)
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
{
    return (s->method->get_timeout());
}

int SSL_read(SSL *s, void *buf, int num)
{
    if (s->handshake_func == 0) {
        SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
        return -1;
    }

    if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
        s->rwstate = SSL_NOTHING;
        return (0);
    }
    return (s->method->ssl_read(s, buf, num));
}

int SSL_peek(SSL *s, void *buf, int num)
{
    if (s->handshake_func == 0) {
        SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
        return -1;
    }

    if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
        return (0);
    }
    return (s->method->ssl_peek(s, buf, num));
}

int SSL_write(SSL *s, const void *buf, int num)
{
    if (s->handshake_func == 0) {
        SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
        return -1;
    }

    if (s->shutdown & SSL_SENT_SHUTDOWN) {
        s->rwstate = SSL_NOTHING;
        SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
        return (-1);
    }
    return (s->method->ssl_write(s, buf, num));
}
981

982
int SSL_shutdown(SSL *s)
983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000
{
    /*
     * Note that this function behaves differently from what one might
     * expect.  Return values are 0 for no success (yet), 1 for success; but
     * calling it once is usually not enough, even if blocking I/O is used
     * (see ssl3_shutdown).
     */

    if (s->handshake_func == 0) {
        SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
        return -1;
    }

    if ((s != NULL) && !SSL_in_init(s))
        return (s->method->ssl_shutdown(s));
    else
        return (1);
}
1001

1002
int SSL_renegotiate(SSL *s)
1003 1004 1005
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
D
Dr. Stephen Henson 已提交
1006

1007
    s->new_session = 1;
D
Dr. Stephen Henson 已提交
1008

1009 1010
    return (s->method->ssl_renegotiate(s));
}
1011

D
Dr. Stephen Henson 已提交
1012
int SSL_renegotiate_abbreviated(SSL *s)
1013 1014 1015
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
B
Bodo Möller 已提交
1016

1017
    s->new_session = 0;
B
Bodo Möller 已提交
1018

1019 1020
    return (s->method->ssl_renegotiate(s));
}
D
Dr. Stephen Henson 已提交
1021

1022
int SSL_renegotiate_pending(SSL *s)
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
{
    /*
     * becomes true when negotiation is requested; false again once a
     * handshake has finished
     */
    return (s->renegotiate != 0);
}

long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
{
    long l;

    switch (cmd) {
    case SSL_CTRL_GET_READ_AHEAD:
1037
        return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1038
    case SSL_CTRL_SET_READ_AHEAD:
1039 1040
        l = RECORD_LAYER_get_read_ahead(&s->rlayer);
        RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
        return (l);

    case SSL_CTRL_SET_MSG_CALLBACK_ARG:
        s->msg_callback_arg = parg;
        return 1;

    case SSL_CTRL_OPTIONS:
        return (s->options |= larg);
    case SSL_CTRL_CLEAR_OPTIONS:
        return (s->options &= ~larg);
    case SSL_CTRL_MODE:
        return (s->mode |= larg);
    case SSL_CTRL_CLEAR_MODE:
        return (s->mode &= ~larg);
    case SSL_CTRL_GET_MAX_CERT_LIST:
        return (s->max_cert_list);
    case SSL_CTRL_SET_MAX_CERT_LIST:
        l = s->max_cert_list;
        s->max_cert_list = larg;
        return (l);
    case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
        if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
            return 0;
        s->max_send_fragment = larg;
        return 1;
    case SSL_CTRL_GET_RI_SUPPORT:
        if (s->s3)
            return s->s3->send_connection_binding;
        else
            return 0;
    case SSL_CTRL_CERT_FLAGS:
        return (s->cert->cert_flags |= larg);
    case SSL_CTRL_CLEAR_CERT_FLAGS:
        return (s->cert->cert_flags &= ~larg);

    case SSL_CTRL_GET_RAW_CIPHERLIST:
        if (parg) {
D
Dr. Stephen Henson 已提交
1078
            if (s->s3->tmp.ciphers_raw == NULL)
1079
                return 0;
D
Dr. Stephen Henson 已提交
1080 1081
            *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
            return (int)s->s3->tmp.ciphers_rawlen;
1082 1083
        } else
            return ssl_put_cipher_by_char(s, NULL, NULL);
1084
    case SSL_CTRL_GET_EXTMS_SUPPORT:
1085 1086 1087
        if (!s->session || SSL_in_init(s) || s->in_handshake)
		return -1;
	if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1088 1089 1090
            return 1;
        else
            return 0;
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109
    default:
        return (s->method->ssl_ctrl(s, cmd, larg, parg));
    }
}

long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
{
    switch (cmd) {
    case SSL_CTRL_SET_MSG_CALLBACK:
        s->msg_callback = (void (*)
                           (int write_p, int version, int content_type,
                            const void *buf, size_t len, SSL *ssl,
                            void *arg))(fp);
        return 1;

    default:
        return (s->method->ssl_callback_ctrl(s, cmd, fp));
    }
}
1110

B
Ben Laurie 已提交
1111
LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121
{
    return ctx->sessions;
}

long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
{
    long l;
    /* For some cases with ctx == NULL perform syntax checks */
    if (ctx == NULL) {
        switch (cmd) {
1122
#ifndef OPENSSL_NO_EC
1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
        case SSL_CTRL_SET_CURVES_LIST:
            return tls1_set_curves_list(NULL, NULL, parg);
#endif
        case SSL_CTRL_SET_SIGALGS_LIST:
        case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
            return tls1_set_sigalgs_list(NULL, parg, 0);
        default:
            return 0;
        }
    }

    switch (cmd) {
    case SSL_CTRL_GET_READ_AHEAD:
        return (ctx->read_ahead);
    case SSL_CTRL_SET_READ_AHEAD:
        l = ctx->read_ahead;
        ctx->read_ahead = larg;
        return (l);

    case SSL_CTRL_SET_MSG_CALLBACK_ARG:
        ctx->msg_callback_arg = parg;
        return 1;

    case SSL_CTRL_GET_MAX_CERT_LIST:
        return (ctx->max_cert_list);
    case SSL_CTRL_SET_MAX_CERT_LIST:
        l = ctx->max_cert_list;
        ctx->max_cert_list = larg;
        return (l);

    case SSL_CTRL_SET_SESS_CACHE_SIZE:
        l = ctx->session_cache_size;
        ctx->session_cache_size = larg;
        return (l);
    case SSL_CTRL_GET_SESS_CACHE_SIZE:
        return (ctx->session_cache_size);
    case SSL_CTRL_SET_SESS_CACHE_MODE:
        l = ctx->session_cache_mode;
        ctx->session_cache_mode = larg;
        return (l);
    case SSL_CTRL_GET_SESS_CACHE_MODE:
        return (ctx->session_cache_mode);

    case SSL_CTRL_SESS_NUMBER:
        return (lh_SSL_SESSION_num_items(ctx->sessions));
    case SSL_CTRL_SESS_CONNECT:
        return (ctx->stats.sess_connect);
    case SSL_CTRL_SESS_CONNECT_GOOD:
        return (ctx->stats.sess_connect_good);
    case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
        return (ctx->stats.sess_connect_renegotiate);
    case SSL_CTRL_SESS_ACCEPT:
        return (ctx->stats.sess_accept);
    case SSL_CTRL_SESS_ACCEPT_GOOD:
        return (ctx->stats.sess_accept_good);
    case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
        return (ctx->stats.sess_accept_renegotiate);
    case SSL_CTRL_SESS_HIT:
        return (ctx->stats.sess_hit);
    case SSL_CTRL_SESS_CB_HIT:
        return (ctx->stats.sess_cb_hit);
    case SSL_CTRL_SESS_MISSES:
        return (ctx->stats.sess_miss);
    case SSL_CTRL_SESS_TIMEOUTS:
        return (ctx->stats.sess_timeout);
    case SSL_CTRL_SESS_CACHE_FULL:
        return (ctx->stats.sess_cache_full);
    case SSL_CTRL_OPTIONS:
        return (ctx->options |= larg);
    case SSL_CTRL_CLEAR_OPTIONS:
        return (ctx->options &= ~larg);
    case SSL_CTRL_MODE:
        return (ctx->mode |= larg);
    case SSL_CTRL_CLEAR_MODE:
        return (ctx->mode &= ~larg);
    case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
        if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
            return 0;
        ctx->max_send_fragment = larg;
        return 1;
    case SSL_CTRL_CERT_FLAGS:
        return (ctx->cert->cert_flags |= larg);
    case SSL_CTRL_CLEAR_CERT_FLAGS:
        return (ctx->cert->cert_flags &= ~larg);
    default:
        return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
    }
}

long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
{
    switch (cmd) {
    case SSL_CTRL_SET_MSG_CALLBACK:
        ctx->msg_callback = (void (*)
                             (int write_p, int version, int content_type,
                              const void *buf, size_t len, SSL *ssl,
                              void *arg))(fp);
        return 1;

    default:
        return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
    }
}
1226

1227
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248
{
    long l;

    l = a->id - b->id;
    if (l == 0L)
        return (0);
    else
        return ((l > 0) ? 1 : -1);
}

int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
                          const SSL_CIPHER *const *bp)
{
    long l;

    l = (*ap)->id - (*bp)->id;
    if (l == 0L)
        return (0);
    else
        return ((l > 0) ? 1 : -1);
}
1249

1250
/** return a STACK of the ciphers available for the SSL and in order of
1251
 * preference */
B
Ben Laurie 已提交
1252
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263
{
    if (s != NULL) {
        if (s->cipher_list != NULL) {
            return (s->cipher_list);
        } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
            return (s->ctx->cipher_list);
        }
    }
    return (NULL);
}

1264 1265 1266 1267 1268 1269 1270
STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
{
    if ((s == NULL) || (s->session == NULL) || !s->server)
        return NULL;
    return s->session->ciphers;
}

1271
STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293
{
    STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
    int i;
    ciphers = SSL_get_ciphers(s);
    if (!ciphers)
        return NULL;
    ssl_set_client_disabled(s);
    for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
        const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
        if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
            if (!sk)
                sk = sk_SSL_CIPHER_new_null();
            if (!sk)
                return NULL;
            if (!sk_SSL_CIPHER_push(sk, c)) {
                sk_SSL_CIPHER_free(sk);
                return NULL;
            }
        }
    }
    return sk;
}
1294

1295
/** return a STACK of the ciphers available for the SSL and in order of
1296
 * algorithm id */
B
Ben Laurie 已提交
1297
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1298 1299 1300 1301 1302 1303 1304 1305 1306 1307
{
    if (s != NULL) {
        if (s->cipher_list_by_id != NULL) {
            return (s->cipher_list_by_id);
        } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
            return (s->ctx->cipher_list_by_id);
        }
    }
    return (NULL);
}
1308

1309
/** The old interface to get the same thing as SSL_get_ciphers() */
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324
const char *SSL_get_cipher_list(const SSL *s, int n)
{
    SSL_CIPHER *c;
    STACK_OF(SSL_CIPHER) *sk;

    if (s == NULL)
        return (NULL);
    sk = SSL_get_ciphers(s);
    if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
        return (NULL);
    c = sk_SSL_CIPHER_value(sk, n);
    if (c == NULL)
        return (NULL);
    return (c->name);
}
1325

1326
/** specify the ciphers to be used by default by the SSL_CTX */
1327
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347
{
    STACK_OF(SSL_CIPHER) *sk;

    sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
                                &ctx->cipher_list_by_id, str, ctx->cert);
    /*
     * ssl_create_cipher_list may return an empty stack if it was unable to
     * find a cipher matching the given rule string (for example if the rule
     * string specifies a cipher which has been disabled). This is not an
     * error as far as ssl_create_cipher_list is concerned, and hence
     * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
     */
    if (sk == NULL)
        return 0;
    else if (sk_SSL_CIPHER_num(sk) == 0) {
        SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
        return 0;
    }
    return 1;
}
1348

1349
/** specify the ciphers to be used by the SSL */
1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364
int SSL_set_cipher_list(SSL *s, const char *str)
{
    STACK_OF(SSL_CIPHER) *sk;

    sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
                                &s->cipher_list_by_id, str, s->cert);
    /* see comment in SSL_CTX_set_cipher_list */
    if (sk == NULL)
        return 0;
    else if (sk_SSL_CIPHER_num(sk) == 0) {
        SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
        return 0;
    }
    return 1;
}
1365 1366

/* works well for SSLv2, not so good for SSLv3 */
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402
char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
{
    char *p;
    STACK_OF(SSL_CIPHER) *sk;
    SSL_CIPHER *c;
    int i;

    if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
        return (NULL);

    p = buf;
    sk = s->session->ciphers;

    if (sk_SSL_CIPHER_num(sk) == 0)
        return NULL;

    for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
        int n;

        c = sk_SSL_CIPHER_value(sk, i);
        n = strlen(c->name);
        if (n + 1 > len) {
            if (p != buf)
                --p;
            *p = '\0';
            return buf;
        }
        strcpy(p, c->name);
        p += n;
        *(p++) = ':';
        len -= n + 1;
    }
    p[-1] = '\0';
    return (buf);
}

1403
/** return a servername extension value if provided in Client Hello, or NULL.
1404
 * So far, only host_name types are defined (RFC 3546).
1405 1406
 */

1407
const char *SSL_get_servername(const SSL *s, const int type)
1408 1409 1410
{
    if (type != TLSEXT_NAMETYPE_host_name)
        return NULL;
B
Bodo Möller 已提交
1411

1412 1413 1414
    return s->session && !s->tlsext_hostname ?
        s->session->tlsext_hostname : s->tlsext_hostname;
}
1415

1416
int SSL_get_servername_type(const SSL *s)
1417 1418 1419 1420 1421 1422 1423
{
    if (s->session
        && (!s->tlsext_hostname ? s->session->
            tlsext_hostname : s->tlsext_hostname))
        return TLSEXT_NAMETYPE_host_name;
    return -1;
}
B
Ben Laurie 已提交
1424

1425 1426
/*
 * SSL_select_next_proto implements the standard protocol selection. It is
B
Ben Laurie 已提交
1427
 * expected that this function is called from the callback set by
1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443
 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
 * vector of 8-bit, length prefixed byte strings. The length byte itself is
 * not included in the length. A byte string of length 0 is invalid. No byte
 * string may be truncated. The current, but experimental algorithm for
 * selecting the protocol is: 1) If the server doesn't support NPN then this
 * is indicated to the callback. In this case, the client application has to
 * abort the connection or have a default application level protocol. 2) If
 * the server supports NPN, but advertises an empty list then the client
 * selects the first protcol in its list, but indicates via the API that this
 * fallback case was enacted. 3) Otherwise, the client finds the first
 * protocol in the server's list that it supports and selects this protocol.
 * This is because it's assumed that the server has better information about
 * which protocol a client should use. 4) If the client doesn't support any
 * of the server's advertised protocols, then this is treated the same as
 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
B
Ben Laurie 已提交
1444
 */
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
                          const unsigned char *server,
                          unsigned int server_len,
                          const unsigned char *client,
                          unsigned int client_len)
{
    unsigned int i, j;
    const unsigned char *result;
    int status = OPENSSL_NPN_UNSUPPORTED;

    /*
     * For each protocol in server preference order, see if we support it.
     */
    for (i = 0; i < server_len;) {
        for (j = 0; j < client_len;) {
            if (server[i] == client[j] &&
                memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
                /* We found a match */
                result = &server[i];
                status = OPENSSL_NPN_NEGOTIATED;
                goto found;
            }
            j += client[j];
            j++;
        }
        i += server[i];
        i++;
    }

    /* There's no overlap between our protocols and the server's list. */
    result = client;
    status = OPENSSL_NPN_NO_OVERLAP;

 found:
    *out = (unsigned char *)result + 1;
    *outlen = result[0];
    return status;
}
B
Ben Laurie 已提交
1483

1484
#ifndef OPENSSL_NO_NEXTPROTONEG
1485 1486 1487 1488 1489 1490
/*
 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
 * client's requested protocol for this connection and returns 0. If the
 * client didn't request any protocol, then *data is set to NULL. Note that
 * the client can request any protocol it chooses. The value returned from
 * this function need not be a member of the list of supported protocols
B
Ben Laurie 已提交
1491 1492
 * provided by the callback.
 */
1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526
void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
                                    unsigned *len)
{
    *data = s->next_proto_negotiated;
    if (!*data) {
        *len = 0;
    } else {
        *len = s->next_proto_negotiated_len;
    }
}

/*
 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
 * a TLS server needs a list of supported protocols for Next Protocol
 * Negotiation. The returned list must be in wire format.  The list is
 * returned by setting |out| to point to it and |outlen| to its length. This
 * memory will not be modified, but one should assume that the SSL* keeps a
 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
 * wishes to advertise. Otherwise, no such extension will be included in the
 * ServerHello.
 */
void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
                                           int (*cb) (SSL *ssl,
                                                      const unsigned char
                                                      **out,
                                                      unsigned int *outlen,
                                                      void *arg), void *arg)
{
    ctx->next_protos_advertised_cb = cb;
    ctx->next_protos_advertised_cb_arg = arg;
}

/*
 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
B
Ben Laurie 已提交
1527 1528
 * client needs to select a protocol from the server's provided list. |out|
 * must be set to point to the selected protocol (which may be within |in|).
1529 1530 1531 1532 1533
 * The length of the protocol name must be written into |outlen|. The
 * server's advertised protocols are provided in |in| and |inlen|. The
 * callback can assume that |in| is syntactically valid. The client must
 * select a protocol. It is fatal to the connection if this callback returns
 * a value other than SSL_TLSEXT_ERR_OK.
B
Ben Laurie 已提交
1534
 */
1535 1536 1537 1538 1539 1540 1541 1542 1543 1544
void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
                                      int (*cb) (SSL *s, unsigned char **out,
                                                 unsigned char *outlen,
                                                 const unsigned char *in,
                                                 unsigned int inlen,
                                                 void *arg), void *arg)
{
    ctx->next_proto_select_cb = cb;
    ctx->next_proto_select_cb_arg = arg;
}
1545
#endif
1546

1547 1548
/*
 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
A
Adam Langley 已提交
1549
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1550 1551 1552 1553 1554
 * length-prefixed strings). Returns 0 on success.
 */
int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
                            unsigned protos_len)
{
R
Rich Salz 已提交
1555
    OPENSSL_free(ctx->alpn_client_proto_list);
1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566
    ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
    if (!ctx->alpn_client_proto_list)
        return 1;
    memcpy(ctx->alpn_client_proto_list, protos, protos_len);
    ctx->alpn_client_proto_list_len = protos_len;

    return 0;
}

/*
 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
A
Adam Langley 已提交
1567
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1568 1569 1570 1571 1572
 * length-prefixed strings). Returns 0 on success.
 */
int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
                        unsigned protos_len)
{
R
Rich Salz 已提交
1573
    OPENSSL_free(ssl->alpn_client_proto_list);
1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605
    ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
    if (!ssl->alpn_client_proto_list)
        return 1;
    memcpy(ssl->alpn_client_proto_list, protos, protos_len);
    ssl->alpn_client_proto_list_len = protos_len;

    return 0;
}

/*
 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
 * called during ClientHello processing in order to select an ALPN protocol
 * from the client's list of offered protocols.
 */
void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
                                int (*cb) (SSL *ssl,
                                           const unsigned char **out,
                                           unsigned char *outlen,
                                           const unsigned char *in,
                                           unsigned int inlen,
                                           void *arg), void *arg)
{
    ctx->alpn_select_cb = cb;
    ctx->alpn_select_cb_arg = arg;
}

/*
 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
 * (not including the leading length-prefix byte). If the server didn't
 * respond with a negotiated protocol then |*len| will be zero.
 */
A
Adam Langley 已提交
1606
void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
                            unsigned *len)
{
    *data = NULL;
    if (ssl->s3)
        *data = ssl->s3->alpn_selected;
    if (*data == NULL)
        *len = 0;
    else
        *len = ssl->s3->alpn_selected_len;
}

1618

1619
int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1620 1621 1622 1623 1624 1625
                               const char *label, size_t llen,
                               const unsigned char *p, size_t plen,
                               int use_context)
{
    if (s->version < TLS1_VERSION)
        return -1;
B
Ben Laurie 已提交
1626

1627 1628 1629 1630
    return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
                                                       llen, p, plen,
                                                       use_context);
}
B
Ben Laurie 已提交
1631

B
Ben Laurie 已提交
1632
static unsigned long ssl_session_hash(const SSL_SESSION *a)
1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645
{
    unsigned long l;

    l = (unsigned long)
        ((unsigned int)a->session_id[0]) |
        ((unsigned int)a->session_id[1] << 8L) |
        ((unsigned long)a->session_id[2] << 16L) |
        ((unsigned long)a->session_id[3] << 24L);
    return (l);
}

/*
 * NB: If this function (or indeed the hash function which uses a sort of
1646
 * coarser function than this one) is changed, ensure
1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661
 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
 * being able to construct an SSL_SESSION that will collide with any existing
 * session with a matching session ID.
 */
static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
{
    if (a->ssl_version != b->ssl_version)
        return (1);
    if (a->session_id_length != b->session_id_length)
        return (1);
    return (memcmp(a->session_id, b->session_id, a->session_id_length));
}

/*
 * These wrapper functions should remain rather than redeclaring
1662
 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1663 1664 1665
 * variable. The reason is that the functions aren't static, they're exposed
 * via ssl.h.
 */
B
Ben Laurie 已提交
1666 1667
static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1668

1669
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686
{
    SSL_CTX *ret = NULL;

    if (meth == NULL) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
        return (NULL);
    }

    if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
        return NULL;
    }

    if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
        goto err;
    }
R
Rich Salz 已提交
1687
    ret = OPENSSL_malloc(sizeof(*ret));
1688 1689 1690
    if (ret == NULL)
        goto err;

1691
    memset(ret, 0, sizeof(*ret));
1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708

    ret->method = meth;

    ret->cert_store = NULL;
    ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
    ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
    ret->session_cache_head = NULL;
    ret->session_cache_tail = NULL;

    /* We take the system default */
    ret->session_timeout = meth->get_timeout();

    ret->new_session_cb = 0;
    ret->remove_session_cb = 0;
    ret->get_session_cb = 0;
    ret->generate_session_id = 0;

1709
    memset(&ret->stats, 0, sizeof(ret->stats));
1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738

    ret->references = 1;
    ret->quiet_shutdown = 0;
    ret->info_callback = NULL;
    ret->app_verify_callback = 0;
    ret->app_verify_arg = NULL;
    ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
    ret->read_ahead = 0;
    ret->msg_callback = 0;
    ret->msg_callback_arg = NULL;
    ret->verify_mode = SSL_VERIFY_NONE;
    ret->sid_ctx_length = 0;
    ret->default_verify_callback = NULL;
    if ((ret->cert = ssl_cert_new()) == NULL)
        goto err;

    ret->default_passwd_callback = 0;
    ret->default_passwd_callback_userdata = NULL;
    ret->client_cert_cb = 0;
    ret->app_gen_cookie_cb = 0;
    ret->app_verify_cookie_cb = 0;

    ret->sessions = lh_SSL_SESSION_new();
    if (ret->sessions == NULL)
        goto err;
    ret->cert_store = X509_STORE_new();
    if (ret->cert_store == NULL)
        goto err;

V
Viktor Dukhovni 已提交
1739
    if (!ssl_create_cipher_list(ret->method,
1740
                           &ret->cipher_list, &ret->cipher_list_by_id,
M
Matt Caswell 已提交
1741 1742
                           SSL_DEFAULT_CIPHER_LIST, ret->cert)
       || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
        goto err2;
    }

    ret->param = X509_VERIFY_PARAM_new();
    if (!ret->param)
        goto err;

    if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
        goto err2;
    }
    if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
        goto err2;
    }

    if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
        goto err;

    CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);

    ret->extra_certs = NULL;
    /* No compression for DTLS */
    if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
        ret->comp_methods = SSL_COMP_get_compression_methods();

    ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1771

1772 1773 1774
    ret->tlsext_servername_callback = 0;
    ret->tlsext_servername_arg = NULL;
    /* Setup RFC4507 ticket keys */
M
Matt Caswell 已提交
1775
    if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1776 1777 1778
        || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
        || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
        ret->options |= SSL_OP_NO_TICKET;
1779

1780 1781
    ret->tlsext_status_cb = 0;
    ret->tlsext_status_arg = NULL;
1782

1783
#ifndef OPENSSL_NO_NEXTPROTONEG
1784 1785
    ret->next_protos_advertised_cb = 0;
    ret->next_proto_select_cb = 0;
1786 1787
#endif
#ifndef OPENSSL_NO_PSK
1788 1789 1790
    ret->psk_identity_hint = NULL;
    ret->psk_client_callback = NULL;
    ret->psk_server_callback = NULL;
B
Ben Laurie 已提交
1791
#endif
B
Ben Laurie 已提交
1792
#ifndef OPENSSL_NO_SRP
V
Viktor Dukhovni 已提交
1793
    if (!SSL_CTX_SRP_CTX_init(ret))
M
Matt Caswell 已提交
1794
        goto err;
B
Ben Laurie 已提交
1795
#endif
1796
#ifndef OPENSSL_NO_ENGINE
1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824
    ret->client_cert_engine = NULL;
# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
#  define eng_strx(x)     #x
#  define eng_str(x)      eng_strx(x)
    /* Use specific client engine automatically... ignore errors */
    {
        ENGINE *eng;
        eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
        if (!eng) {
            ERR_clear_error();
            ENGINE_load_builtin_engines();
            eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
        }
        if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
            ERR_clear_error();
    }
# endif
#endif
    /*
     * Default is to connect to non-RI servers. When RI is more widely
     * deployed might change this.
     */
    ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;

    return (ret);
 err:
    SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
 err2:
R
Rich Salz 已提交
1825
    SSL_CTX_free(ret);
1826 1827
    return (NULL);
}
1828

1829
void SSL_CTX_free(SSL_CTX *a)
1830 1831
{
    int i;
1832

1833 1834
    if (a == NULL)
        return;
1835

1836
    i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1837
#ifdef REF_PRINT
1838
    REF_PRINT("SSL_CTX", a);
1839
#endif
1840 1841
    if (i > 0)
        return;
1842
#ifdef REF_CHECK
1843 1844 1845 1846 1847 1848
    if (i < 0) {
        fprintf(stderr, "SSL_CTX_free, bad reference count\n");
        abort();                /* ok */
    }
#endif

R
Rich Salz 已提交
1849
    X509_VERIFY_PARAM_free(a->param);
1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863

    /*
     * Free internal session cache. However: the remove_cb() may reference
     * the ex_data of SSL_CTX, thus the ex_data store can only be removed
     * after the sessions were flushed.
     * As the ex_data handling routines might also touch the session cache,
     * the most secure solution seems to be: empty (flush) the cache, then
     * free ex_data, then finally free the cache.
     * (See ticket [openssl.org #212].)
     */
    if (a->sessions != NULL)
        SSL_CTX_flush_sessions(a, 0);

    CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
R
Rich Salz 已提交
1864
    lh_SSL_SESSION_free(a->sessions);
R
Rich Salz 已提交
1865
    X509_STORE_free(a->cert_store);
R
Rich Salz 已提交
1866 1867
    sk_SSL_CIPHER_free(a->cipher_list);
    sk_SSL_CIPHER_free(a->cipher_list_by_id);
R
Rich Salz 已提交
1868
    ssl_cert_free(a->cert);
R
Rich Salz 已提交
1869 1870
    sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
    sk_X509_pop_free(a->extra_certs, X509_free);
1871
    a->comp_methods = NULL;
P
Piotr Sikora 已提交
1872
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
1873
    sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
P
Piotr Sikora 已提交
1874
#endif
1875
#ifndef OPENSSL_NO_PSK
R
Rich Salz 已提交
1876
    OPENSSL_free(a->psk_identity_hint);
1877
#endif
B
Ben Laurie 已提交
1878
#ifndef OPENSSL_NO_SRP
1879
    SSL_CTX_SRP_CTX_free(a);
B
Ben Laurie 已提交
1880
#endif
1881
#ifndef OPENSSL_NO_ENGINE
1882 1883
    if (a->client_cert_engine)
        ENGINE_finish(a->client_cert_engine);
1884
#endif
B
Ben Laurie 已提交
1885

1886
#ifndef OPENSSL_NO_EC
R
Rich Salz 已提交
1887 1888
    OPENSSL_free(a->tlsext_ecpointformatlist);
    OPENSSL_free(a->tlsext_ellipticcurvelist);
B
Ben Laurie 已提交
1889
#endif
1890
    OPENSSL_free(a->alpn_client_proto_list);
B
Ben Laurie 已提交
1891

1892 1893
    OPENSSL_free(a);
}
1894

1895
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934
{
    ctx->default_passwd_callback = cb;
}

void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
{
    ctx->default_passwd_callback_userdata = u;
}

void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
                                      int (*cb) (X509_STORE_CTX *, void *),
                                      void *arg)
{
    ctx->app_verify_callback = cb;
    ctx->app_verify_arg = arg;
}

void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
                        int (*cb) (int, X509_STORE_CTX *))
{
    ctx->verify_mode = mode;
    ctx->default_verify_callback = cb;
}

void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
{
    X509_VERIFY_PARAM_set_depth(ctx->param, depth);
}

void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
                         void *arg)
{
    ssl_cert_set_cert_cb(c->cert, cb, arg);
}

void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
{
    ssl_cert_set_cert_cb(s->cert, cb, arg);
}
1935

1936
void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
1937 1938
{
    CERT_PKEY *cpk;
1939
    CERT *c = s->cert;
1940
    uint32_t *pvalid = s->s3->tmp.valid_flags;
1941 1942 1943 1944
    int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
    int rsa_enc_export, dh_rsa_export, dh_dsa_export;
    int rsa_tmp_export, dh_tmp_export, kl;
    unsigned long mask_k, mask_a, emask_k, emask_a;
1945
#ifndef OPENSSL_NO_EC
1946 1947 1948 1949 1950
    int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
    int have_ecdh_tmp, ecdh_ok;
    X509 *x = NULL;
    EVP_PKEY *ecc_pkey = NULL;
    int signature_nid = 0, pk_nid = 0, md_nid = 0;
1951
#endif
1952 1953
    if (c == NULL)
        return;
1954

1955
    kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1956

1957
#ifndef OPENSSL_NO_RSA
1958 1959 1960
    rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
    rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
                      (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
1961
#else
1962
    rsa_tmp = rsa_tmp_export = 0;
1963
#endif
1964
#ifndef OPENSSL_NO_DH
1965 1966 1967 1968
    dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
    dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
                                        (dh_tmp
                                         && DH_size(c->dh_tmp) * 8 <= kl));
1969
#else
1970
    dh_tmp = dh_tmp_export = 0;
1971 1972
#endif

1973
#ifndef OPENSSL_NO_EC
1974 1975 1976
    have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
#endif
    cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
1977
    rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
1978 1979
    rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1980
    rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
1981
    cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1982
    dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
1983
    cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
1984
    dh_rsa = pvalid[SSL_PKEY_DH_RSA] & CERT_PKEY_VALID;
1985 1986
    dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
1987
    dh_dsa = pvalid[SSL_PKEY_DH_DSA] & CERT_PKEY_VALID;
1988 1989
    dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_ECC]);
1990
#ifndef OPENSSL_NO_EC
1991
    have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
1992
#endif
1993 1994 1995 1996
    mask_k = 0;
    mask_a = 0;
    emask_k = 0;
    emask_a = 0;
1997

1998
#ifdef CIPHER_DEBUG
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
    fprintf(stderr,
            "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
            rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
            rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
#endif

    cpk = &(c->pkeys[SSL_PKEY_GOST01]);
    if (cpk->x509 != NULL && cpk->privatekey != NULL) {
        mask_k |= SSL_kGOST;
        mask_a |= SSL_aGOST01;
    }

    if (rsa_enc || (rsa_tmp && rsa_sign))
        mask_k |= SSL_kRSA;
    if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
        emask_k |= SSL_kRSA;
2015

2016 2017
    if (dh_tmp_export)
        emask_k |= SSL_kDHE;
2018

2019 2020
    if (dh_tmp)
        mask_k |= SSL_kDHE;
2021

2022 2023 2024 2025
    if (dh_rsa)
        mask_k |= SSL_kDHr;
    if (dh_rsa_export)
        emask_k |= SSL_kDHr;
2026

2027 2028 2029 2030
    if (dh_dsa)
        mask_k |= SSL_kDHd;
    if (dh_dsa_export)
        emask_k |= SSL_kDHd;
2031

2032
    if (mask_k & (SSL_kDHr | SSL_kDHd))
2033
        mask_a |= SSL_aDH;
2034

2035 2036 2037 2038
    if (rsa_enc || rsa_sign) {
        mask_a |= SSL_aRSA;
        emask_a |= SSL_aRSA;
    }
2039

2040 2041 2042 2043
    if (dsa_sign) {
        mask_a |= SSL_aDSS;
        emask_a |= SSL_aDSS;
    }
2044

2045 2046
    mask_a |= SSL_aNULL;
    emask_a |= SSL_aNULL;
2047

2048 2049 2050 2051
    /*
     * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
     * depending on the key usage extension.
     */
2052
#ifndef OPENSSL_NO_EC
2053 2054 2055 2056 2057 2058 2059 2060 2061
    if (have_ecc_cert) {
        cpk = &c->pkeys[SSL_PKEY_ECC];
        x = cpk->x509;
        /* This call populates extension flags (ex_flags) */
        X509_check_purpose(x, -1, 0);
        ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
            (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
        ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
            (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2062
        if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095
            ecdsa_ok = 0;
        ecc_pkey = X509_get_pubkey(x);
        ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
        EVP_PKEY_free(ecc_pkey);
        if ((x->sig_alg) && (x->sig_alg->algorithm)) {
            signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
            OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
        }
        if (ecdh_ok) {

            if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
                mask_k |= SSL_kECDHr;
                mask_a |= SSL_aECDH;
                if (ecc_pkey_size <= 163) {
                    emask_k |= SSL_kECDHr;
                    emask_a |= SSL_aECDH;
                }
            }

            if (pk_nid == NID_X9_62_id_ecPublicKey) {
                mask_k |= SSL_kECDHe;
                mask_a |= SSL_aECDH;
                if (ecc_pkey_size <= 163) {
                    emask_k |= SSL_kECDHe;
                    emask_a |= SSL_aECDH;
                }
            }
        }
        if (ecdsa_ok) {
            mask_a |= SSL_aECDSA;
            emask_a |= SSL_aECDSA;
        }
    }
2096
#endif
B
Bodo Möller 已提交
2097

2098
#ifndef OPENSSL_NO_EC
2099 2100 2101 2102
    if (have_ecdh_tmp) {
        mask_k |= SSL_kECDHE;
        emask_k |= SSL_kECDHE;
    }
B
Bodo Möller 已提交
2103
#endif
2104 2105

#ifndef OPENSSL_NO_PSK
2106 2107 2108 2109
    mask_k |= SSL_kPSK;
    mask_a |= SSL_aPSK;
    emask_k |= SSL_kPSK;
    emask_a |= SSL_aPSK;
2110 2111 2112 2113 2114 2115
    if (mask_k & SSL_kRSA)
        mask_k |= SSL_kRSAPSK;
    if (mask_k & SSL_kDHE)
        mask_k |= SSL_kDHEPSK;
    if (mask_k & SSL_kECDHE)
        mask_k |= SSL_kECDHEPSK;
2116 2117
#endif

2118 2119 2120 2121
    s->s3->tmp.mask_k = mask_k;
    s->s3->tmp.mask_a = mask_a;
    s->s3->tmp.export_mask_k = emask_k;
    s->s3->tmp.export_mask_a = emask_a;
2122
}
2123

B
Bodo Möller 已提交
2124 2125
/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
#define ku_reject(x, usage) \
2126
        (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
B
Bodo Möller 已提交
2127

2128 2129
#ifndef OPENSSL_NO_EC

2130
int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193
{
    unsigned long alg_k, alg_a;
    EVP_PKEY *pkey = NULL;
    int keysize = 0;
    int signature_nid = 0, md_nid = 0, pk_nid = 0;
    const SSL_CIPHER *cs = s->s3->tmp.new_cipher;

    alg_k = cs->algorithm_mkey;
    alg_a = cs->algorithm_auth;

    if (SSL_C_IS_EXPORT(cs)) {
        /* ECDH key length in export ciphers must be <= 163 bits */
        pkey = X509_get_pubkey(x);
        if (pkey == NULL)
            return 0;
        keysize = EVP_PKEY_bits(pkey);
        EVP_PKEY_free(pkey);
        if (keysize > 163)
            return 0;
    }

    /* This call populates the ex_flags field correctly */
    X509_check_purpose(x, -1, 0);
    if ((x->sig_alg) && (x->sig_alg->algorithm)) {
        signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
        OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
    }
    if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
        /* key usage, if present, must allow key agreement */
        if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
            SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                   SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
            return 0;
        }
        if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
            /* signature alg must be ECDSA */
            if (pk_nid != NID_X9_62_id_ecPublicKey) {
                SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                       SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
                return 0;
            }
        }
        if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
            /* signature alg must be RSA */

            if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
                SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                       SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
                return 0;
            }
        }
    }
    if (alg_a & SSL_aECDSA) {
        /* key usage, if present, must allow signing */
        if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
            SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                   SSL_R_ECC_CERT_NOT_FOR_SIGNING);
            return 0;
        }
    }

    return 1;                   /* all checks are ok */
}
B
Bodo Möller 已提交
2194

2195 2196
#endif

2197
static int ssl_get_server_cert_index(const SSL *s)
2198 2199 2200 2201 2202 2203 2204 2205 2206
{
    int idx;
    idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
    if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
        idx = SSL_PKEY_RSA_SIGN;
    if (idx == -1)
        SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
    return idx;
}
B
Ben Laurie 已提交
2207

2208
CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2209 2210 2211
{
    CERT *c;
    int i;
B
Bodo Möller 已提交
2212

2213 2214 2215
    c = s->cert;
    if (!s->s3 || !s->s3->tmp.new_cipher)
        return NULL;
2216
    ssl_set_masks(s, s->s3->tmp.new_cipher);
B
Ben Laurie 已提交
2217

2218
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2219 2220 2221 2222 2223 2224
    /*
     * Broken protocol test: return last used certificate: which may mismatch
     * the one expected.
     */
    if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
        return c->key;
2225 2226
#endif

2227
    i = ssl_get_server_cert_index(s);
B
Ben Laurie 已提交
2228

2229 2230 2231
    /* This may or may not be an error. */
    if (i < 0)
        return NULL;
B
Ben Laurie 已提交
2232

2233 2234 2235
    /* May be NULL. */
    return &c->pkeys[i];
}
2236

2237 2238 2239 2240 2241 2242
EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
                            const EVP_MD **pmd)
{
    unsigned long alg_a;
    CERT *c;
    int idx = -1;
2243

2244 2245
    alg_a = cipher->algorithm_auth;
    c = s->cert;
2246

2247
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272
    /*
     * Broken protocol test: use last key: which may mismatch the one
     * expected.
     */
    if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
        idx = c->key - c->pkeys;
    else
#endif

    if ((alg_a & SSL_aDSS) &&
            (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
        idx = SSL_PKEY_DSA_SIGN;
    else if (alg_a & SSL_aRSA) {
        if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
            idx = SSL_PKEY_RSA_SIGN;
        else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
            idx = SSL_PKEY_RSA_ENC;
    } else if ((alg_a & SSL_aECDSA) &&
               (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
        idx = SSL_PKEY_ECC;
    if (idx == -1) {
        SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
        return (NULL);
    }
    if (pmd)
2273
        *pmd = s->s3->tmp.md[idx];
2274 2275
    return c->pkeys[idx].privatekey;
}
2276

2277
int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326
                                   size_t *serverinfo_length)
{
    CERT *c = NULL;
    int i = 0;
    *serverinfo_length = 0;

    c = s->cert;
    i = ssl_get_server_cert_index(s);

    if (i == -1)
        return 0;
    if (c->pkeys[i].serverinfo == NULL)
        return 0;

    *serverinfo = c->pkeys[i].serverinfo;
    *serverinfo_length = c->pkeys[i].serverinfo_length;
    return 1;
}

void ssl_update_cache(SSL *s, int mode)
{
    int i;

    /*
     * If the session_id_length is 0, we are not supposed to cache it, and it
     * would be rather hard to do anyway :-)
     */
    if (s->session->session_id_length == 0)
        return;

    i = s->session_ctx->session_cache_mode;
    if ((i & mode) && (!s->hit)
        && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
            || SSL_CTX_add_session(s->session_ctx, s->session))
        && (s->session_ctx->new_session_cb != NULL)) {
        CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
        if (!s->session_ctx->new_session_cb(s, s->session))
            SSL_SESSION_free(s->session);
    }

    /* auto flush every 255 connections */
    if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
        if ((((mode & SSL_SESS_CACHE_CLIENT)
              ? s->session_ctx->stats.sess_connect_good
              : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
            SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
        }
    }
}
2327

2328
const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2329 2330 2331
{
    return ctx->method;
}
2332

2333
const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2334 2335 2336
{
    return (s->method);
}
2337

2338
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438
{
    int conn = -1;
    int ret = 1;

    if (s->method != meth) {
        if (s->handshake_func != NULL)
            conn = (s->handshake_func == s->method->ssl_connect);

        if (s->method->version == meth->version)
            s->method = meth;
        else {
            s->method->ssl_free(s);
            s->method = meth;
            ret = s->method->ssl_new(s);
        }

        if (conn == 1)
            s->handshake_func = meth->ssl_connect;
        else if (conn == 0)
            s->handshake_func = meth->ssl_accept;
    }
    return (ret);
}

int SSL_get_error(const SSL *s, int i)
{
    int reason;
    unsigned long l;
    BIO *bio;

    if (i > 0)
        return (SSL_ERROR_NONE);

    /*
     * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
     * where we do encode the error
     */
    if ((l = ERR_peek_error()) != 0) {
        if (ERR_GET_LIB(l) == ERR_LIB_SYS)
            return (SSL_ERROR_SYSCALL);
        else
            return (SSL_ERROR_SSL);
    }

    if ((i < 0) && SSL_want_read(s)) {
        bio = SSL_get_rbio(s);
        if (BIO_should_read(bio))
            return (SSL_ERROR_WANT_READ);
        else if (BIO_should_write(bio))
            /*
             * This one doesn't make too much sense ... We never try to write
             * to the rbio, and an application program where rbio and wbio
             * are separate couldn't even know what it should wait for.
             * However if we ever set s->rwstate incorrectly (so that we have
             * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
             * wbio *are* the same, this test works around that bug; so it
             * might be safer to keep it.
             */
            return (SSL_ERROR_WANT_WRITE);
        else if (BIO_should_io_special(bio)) {
            reason = BIO_get_retry_reason(bio);
            if (reason == BIO_RR_CONNECT)
                return (SSL_ERROR_WANT_CONNECT);
            else if (reason == BIO_RR_ACCEPT)
                return (SSL_ERROR_WANT_ACCEPT);
            else
                return (SSL_ERROR_SYSCALL); /* unknown */
        }
    }

    if ((i < 0) && SSL_want_write(s)) {
        bio = SSL_get_wbio(s);
        if (BIO_should_write(bio))
            return (SSL_ERROR_WANT_WRITE);
        else if (BIO_should_read(bio))
            /*
             * See above (SSL_want_read(s) with BIO_should_write(bio))
             */
            return (SSL_ERROR_WANT_READ);
        else if (BIO_should_io_special(bio)) {
            reason = BIO_get_retry_reason(bio);
            if (reason == BIO_RR_CONNECT)
                return (SSL_ERROR_WANT_CONNECT);
            else if (reason == BIO_RR_ACCEPT)
                return (SSL_ERROR_WANT_ACCEPT);
            else
                return (SSL_ERROR_SYSCALL);
        }
    }
    if ((i < 0) && SSL_want_x509_lookup(s)) {
        return (SSL_ERROR_WANT_X509_LOOKUP);
    }

    if (i == 0) {
        if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
            (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
            return (SSL_ERROR_ZERO_RETURN);
    }
    return (SSL_ERROR_SYSCALL);
}
2439

2440
int SSL_do_handshake(SSL *s)
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456
{
    int ret = 1;

    if (s->handshake_func == NULL) {
        SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
        return (-1);
    }

    s->method->ssl_renegotiate_check(s);

    if (SSL_in_init(s) || SSL_in_before(s)) {
        ret = s->handshake_func(s);
    }
    return (ret);
}

2457
void SSL_set_accept_state(SSL *s)
2458 2459 2460 2461 2462
{
    s->server = 1;
    s->shutdown = 0;
    s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
    s->handshake_func = s->method->ssl_accept;
R
Rich Salz 已提交
2463
    clear_ciphers(s);
2464
}
2465

2466
void SSL_set_connect_state(SSL *s)
2467 2468 2469 2470 2471
{
    s->server = 0;
    s->shutdown = 0;
    s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
    s->handshake_func = s->method->ssl_connect;
R
Rich Salz 已提交
2472
    clear_ciphers(s);
2473
}
2474

2475
int ssl_undefined_function(SSL *s)
2476 2477 2478 2479
{
    SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2480

2481
int ssl_undefined_void_function(void)
2482 2483 2484 2485 2486
{
    SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2487

B
Ben Laurie 已提交
2488
int ssl_undefined_const_function(const SSL *s)
2489 2490 2491 2492 2493
{
    SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
B
Ben Laurie 已提交
2494

2495
SSL_METHOD *ssl_bad_method(int ver)
2496 2497 2498 2499
{
    SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (NULL);
}
2500

B
Ben Laurie 已提交
2501
const char *SSL_get_version(const SSL *s)
2502 2503 2504 2505 2506 2507 2508 2509 2510
{
    if (s->version == TLS1_2_VERSION)
        return ("TLSv1.2");
    else if (s->version == TLS1_1_VERSION)
        return ("TLSv1.1");
    else if (s->version == TLS1_VERSION)
        return ("TLSv1");
    else if (s->version == SSL3_VERSION)
        return ("SSLv3");
D
David Woodhouse 已提交
2511 2512 2513 2514 2515 2516
    else if (s->version == DTLS1_BAD_VER)
        return ("DTLSv0.9");
    else if (s->version == DTLS1_VERSION)
        return ("DTLSv1");
    else if (s->version == DTLS1_2_VERSION)
        return ("DTLSv1.2");
2517 2518 2519
    else
        return ("unknown");
}
2520

2521
SSL *SSL_dup(SSL *s)
2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536
{
    STACK_OF(X509_NAME) *sk;
    X509_NAME *xn;
    SSL *ret;
    int i;

    if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
        return (NULL);

    ret->version = s->version;
    ret->type = s->type;
    ret->method = s->method;

    if (s->session != NULL) {
        /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
V
Viktor Dukhovni 已提交
2537
        if (!SSL_copy_session_id(ret, s))
M
Matt Caswell 已提交
2538
            goto err;
2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551
    } else {
        /*
         * No session has been established yet, so we have to expect that
         * s->cert or ret->cert will be changed later -- they should not both
         * point to the same object, and thus we can't use
         * SSL_copy_session_id.
         */

        ret->method->ssl_free(ret);
        ret->method = s->method;
        ret->method->ssl_new(ret);

        if (s->cert != NULL) {
R
Rich Salz 已提交
2552
            ssl_cert_free(ret->cert);
2553 2554 2555 2556 2557
            ret->cert = ssl_cert_dup(s->cert);
            if (ret->cert == NULL)
                goto err;
        }

V
Viktor Dukhovni 已提交
2558
        if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
M
Matt Caswell 已提交
2559
            goto err;
2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601
    }

    ret->options = s->options;
    ret->mode = s->mode;
    SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
    SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
    ret->msg_callback = s->msg_callback;
    ret->msg_callback_arg = s->msg_callback_arg;
    SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
    SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
    ret->generate_session_id = s->generate_session_id;

    SSL_set_info_callback(ret, SSL_get_info_callback(s));

    ret->debug = s->debug;

    /* copy app data, a little dangerous perhaps */
    if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
        goto err;

    /* setup rbio, and wbio */
    if (s->rbio != NULL) {
        if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
            goto err;
    }
    if (s->wbio != NULL) {
        if (s->wbio != s->rbio) {
            if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
                goto err;
        } else
            ret->wbio = ret->rbio;
    }
    ret->rwstate = s->rwstate;
    ret->in_handshake = s->in_handshake;
    ret->handshake_func = s->handshake_func;
    ret->server = s->server;
    ret->renegotiate = s->renegotiate;
    ret->new_session = s->new_session;
    ret->quiet_shutdown = s->quiet_shutdown;
    ret->shutdown = s->shutdown;
    ret->state = s->state;      /* SSL_dup does not really work at any state,
                                 * though */
2602
    RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632
    ret->init_num = 0;          /* would have to copy ret->init_buf,
                                 * ret->init_msg, ret->init_num,
                                 * ret->init_off */
    ret->hit = s->hit;

    X509_VERIFY_PARAM_inherit(ret->param, s->param);

    /* dup the cipher_list and cipher_list_by_id stacks */
    if (s->cipher_list != NULL) {
        if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
            goto err;
    }
    if (s->cipher_list_by_id != NULL)
        if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
            == NULL)
            goto err;

    /* Dup the client_CA list */
    if (s->client_CA != NULL) {
        if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
            goto err;
        ret->client_CA = sk;
        for (i = 0; i < sk_X509_NAME_num(sk); i++) {
            xn = sk_X509_NAME_value(sk, i);
            if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
                X509_NAME_free(xn);
                goto err;
            }
        }
    }
R
Rich Salz 已提交
2633
    return ret;
2634 2635

 err:
R
Rich Salz 已提交
2636 2637
    SSL_free(ret);
    return NULL;
2638
}
2639

2640
void ssl_clear_cipher_ctx(SSL *s)
2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651
{
    if (s->enc_read_ctx != NULL) {
        EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
        OPENSSL_free(s->enc_read_ctx);
        s->enc_read_ctx = NULL;
    }
    if (s->enc_write_ctx != NULL) {
        EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
        OPENSSL_free(s->enc_write_ctx);
        s->enc_write_ctx = NULL;
    }
2652
#ifndef OPENSSL_NO_COMP
R
Rich Salz 已提交
2653 2654 2655 2656
    COMP_CTX_free(s->expand);
    s->expand = NULL;
    COMP_CTX_free(s->compress);
    s->compress = NULL;
2657 2658
#endif
}
2659

B
Ben Laurie 已提交
2660
X509 *SSL_get_certificate(const SSL *s)
2661 2662 2663 2664 2665 2666
{
    if (s->cert != NULL)
        return (s->cert->key->x509);
    else
        return (NULL);
}
2667

2668
EVP_PKEY *SSL_get_privatekey(const SSL *s)
2669 2670 2671 2672 2673 2674
{
    if (s->cert != NULL)
        return (s->cert->key->privatekey);
    else
        return (NULL);
}
2675

2676
X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2677 2678 2679 2680 2681 2682
{
    if (ctx->cert != NULL)
        return ctx->cert->key->x509;
    else
        return NULL;
}
2683 2684

EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2685 2686 2687 2688 2689 2690
{
    if (ctx->cert != NULL)
        return ctx->cert->key->privatekey;
    else
        return NULL;
}
2691

2692
const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2693 2694 2695 2696 2697 2698
{
    if ((s->session != NULL) && (s->session->cipher != NULL))
        return (s->session->cipher);
    return (NULL);
}

2699
const COMP_METHOD *SSL_get_current_compression(SSL *s)
2700
{
R
Rich Salz 已提交
2701 2702 2703 2704 2705
#ifndef OPENSSL_NO_COMP
    return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
#else
    return NULL;
#endif
2706
}
2707 2708

const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2709
{
R
Rich Salz 已提交
2710 2711 2712 2713
#ifndef OPENSSL_NO_COMP
    return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
#else
    return NULL;
2714
#endif
R
Rich Salz 已提交
2715
}
2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745

int ssl_init_wbio_buffer(SSL *s, int push)
{
    BIO *bbio;

    if (s->bbio == NULL) {
        bbio = BIO_new(BIO_f_buffer());
        if (bbio == NULL)
            return (0);
        s->bbio = bbio;
    } else {
        bbio = s->bbio;
        if (s->bbio == s->wbio)
            s->wbio = BIO_pop(s->wbio);
    }
    (void)BIO_reset(bbio);
/*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
    if (!BIO_set_read_buffer_size(bbio, 1)) {
        SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
        return (0);
    }
    if (push) {
        if (s->wbio != bbio)
            s->wbio = BIO_push(bbio, s->wbio);
    } else {
        if (s->wbio == bbio)
            s->wbio = BIO_pop(bbio);
    }
    return (1);
}
2746

2747
void ssl_free_wbio_buffer(SSL *s)
2748
{
R
Rich Salz 已提交
2749
    /* callers ensure s is never null */
2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768
    if (s->bbio == NULL)
        return;

    if (s->bbio == s->wbio) {
        /* remove buffering */
        s->wbio = BIO_pop(s->wbio);
#ifdef REF_CHECK                /* not the usual REF_CHECK, but this avoids
                                 * adding one more preprocessor symbol */
        assert(s->wbio != NULL);
#endif
    }
    BIO_free(s->bbio);
    s->bbio = NULL;
}

void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
{
    ctx->quiet_shutdown = mode;
}
2769

B
Ben Laurie 已提交
2770
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2771 2772 2773
{
    return (ctx->quiet_shutdown);
}
2774

2775 2776 2777 2778
void SSL_set_quiet_shutdown(SSL *s, int mode)
{
    s->quiet_shutdown = mode;
}
2779

B
Ben Laurie 已提交
2780
int SSL_get_quiet_shutdown(const SSL *s)
2781 2782 2783
{
    return (s->quiet_shutdown);
}
2784

2785 2786 2787 2788
void SSL_set_shutdown(SSL *s, int mode)
{
    s->shutdown = mode;
}
2789

B
Ben Laurie 已提交
2790
int SSL_get_shutdown(const SSL *s)
2791 2792 2793
{
    return (s->shutdown);
}
2794

B
Ben Laurie 已提交
2795
int SSL_version(const SSL *s)
2796 2797 2798
{
    return (s->version);
}
2799

B
Ben Laurie 已提交
2800
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2801 2802 2803 2804 2805 2806
{
    return (ssl->ctx);
}

SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
{
K
Kurt Roeckx 已提交
2807
    CERT *new_cert;
2808 2809 2810 2811
    if (ssl->ctx == ctx)
        return ssl->ctx;
    if (ctx == NULL)
        ctx = ssl->initial_ctx;
K
Kurt Roeckx 已提交
2812 2813 2814
    new_cert = ssl_cert_dup(ctx->cert);
    if (new_cert == NULL) {
        return NULL;
2815
    }
K
Kurt Roeckx 已提交
2816 2817
    ssl_cert_free(ssl->cert);
    ssl->cert = new_cert;
2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838

    /*
     * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
     * so setter APIs must prevent invalid lengths from entering the system.
     */
    OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));

    /*
     * If the session ID context matches that of the parent SSL_CTX,
     * inherit it from the new SSL_CTX as well. If however the context does
     * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
     * leave it unchanged.
     */
    if ((ssl->ctx != NULL) &&
        (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
        (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
        ssl->sid_ctx_length = ctx->sid_ctx_length;
        memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
    }

    CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
R
Rich Salz 已提交
2839
    SSL_CTX_free(ssl->ctx); /* decrement reference count */
2840 2841 2842 2843
    ssl->ctx = ctx;

    return (ssl->ctx);
}
2844

2845
#ifndef OPENSSL_NO_STDIO
2846
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2847 2848 2849
{
    return (X509_STORE_set_default_paths(ctx->cert_store));
}
2850

2851
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2852 2853 2854 2855
                                  const char *CApath)
{
    return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
}
2856
#endif
2857

B
Ben Laurie 已提交
2858
void SSL_set_info_callback(SSL *ssl,
2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872
                           void (*cb) (const SSL *ssl, int type, int val))
{
    ssl->info_callback = cb;
}

/*
 * One compiler (Diab DCC) doesn't like argument names in returned function
 * pointer.
 */
void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
                                               int /* type */ ,
                                               int /* val */ ) {
    return ssl->info_callback;
}
2873

B
Ben Laurie 已提交
2874
int SSL_state(const SSL *ssl)
2875 2876 2877
{
    return (ssl->state);
}
2878

2879
void SSL_set_state(SSL *ssl, int state)
2880 2881 2882
{
    ssl->state = state;
}
2883

2884 2885 2886 2887
void SSL_set_verify_result(SSL *ssl, long arg)
{
    ssl->verify_result = arg;
}
2888

B
Ben Laurie 已提交
2889
long SSL_get_verify_result(const SSL *ssl)
2890 2891 2892 2893
{
    return (ssl->verify_result);
}

2894
size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
2895
{
2896
    if (outlen == 0)
2897 2898 2899 2900
        return sizeof(ssl->s3->client_random);
    if (outlen > sizeof(ssl->s3->client_random))
        outlen = sizeof(ssl->s3->client_random);
    memcpy(out, ssl->s3->client_random, outlen);
2901
    return outlen;
2902 2903
}

2904
size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
2905
{
2906
    if (outlen == 0)
2907 2908 2909 2910
        return sizeof(ssl->s3->server_random);
    if (outlen > sizeof(ssl->s3->server_random))
        outlen = sizeof(ssl->s3->server_random);
    memcpy(out, ssl->s3->server_random, outlen);
2911
    return outlen;
2912 2913
}

2914
size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
2915
                               unsigned char *out, size_t outlen)
2916
{
2917 2918 2919 2920
    if (session->master_key_length < 0) {
        /* Should never happen */
        return 0;
    }
2921 2922
    if (outlen == 0)
        return session->master_key_length;
2923
    if (outlen > (size_t)session->master_key_length)
2924 2925
        outlen = session->master_key_length;
    memcpy(out, session->master_key, outlen);
2926
    return outlen;
2927 2928
}

2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962
int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
                         CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
{
    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
                                   new_func, dup_func, free_func);
}

int SSL_set_ex_data(SSL *s, int idx, void *arg)
{
    return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
}

void *SSL_get_ex_data(const SSL *s, int idx)
{
    return (CRYPTO_get_ex_data(&s->ex_data, idx));
}

int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
                             CRYPTO_EX_dup *dup_func,
                             CRYPTO_EX_free *free_func)
{
    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
                                   new_func, dup_func, free_func);
}

int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
{
    return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
}

void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
{
    return (CRYPTO_get_ex_data(&s->ex_data, idx));
}
2963

2964
int ssl_ok(SSL *s)
2965 2966 2967
{
    return (1);
}
2968

B
Ben Laurie 已提交
2969
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2970 2971 2972
{
    return (ctx->cert_store);
}
2973

2974 2975
void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
{
R
Rich Salz 已提交
2976
    X509_STORE_free(ctx->cert_store);
2977 2978
    ctx->cert_store = store;
}
2979

B
Ben Laurie 已提交
2980
int SSL_want(const SSL *s)
2981 2982 2983
{
    return (s->rwstate);
}
2984

2985
/**
2986 2987 2988 2989 2990
 * \brief Set the callback for generating temporary RSA keys.
 * \param ctx the SSL context.
 * \param cb the callback
 */

2991
#ifndef OPENSSL_NO_RSA
2992 2993 2994 2995 2996 2997
void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
                                                            int is_export,
                                                            int keylength))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
}
2998

2999 3000 3001 3002 3003 3004
void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
                                                    int is_export,
                                                    int keylength))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
}
3005
#endif
3006

3007
#ifdef DOXYGEN
3008
/**
3009 3010
 * \brief The RSA temporary key callback function.
 * \param ssl the SSL session.
U
Ulf Möller 已提交
3011 3012 3013
 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
 * of the required key in bits.
3014 3015 3016 3017
 * \return the temporary RSA key.
 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
 */

3018 3019 3020
RSA *cb(SSL *ssl, int is_export, int keylength)
{
}
3021 3022
#endif

3023
/**
3024 3025 3026 3027 3028
 * \brief Set the callback for generating temporary DH keys.
 * \param ctx the SSL context.
 * \param dh the callback
 */

3029
#ifndef OPENSSL_NO_DH
3030 3031 3032 3033 3034 3035
void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
                                 DH *(*dh) (SSL *ssl, int is_export,
                                            int keylength))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
}
3036

3037 3038 3039 3040 3041
void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
                                                  int keylength))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
}
3042
#endif
3043

3044
#ifndef OPENSSL_NO_EC
3045 3046 3047 3048 3049 3050 3051
void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
                                   EC_KEY *(*ecdh) (SSL *ssl, int is_export,
                                                    int keylength))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
                          (void (*)(void))ecdh);
}
B
Bodo Möller 已提交
3052

3053 3054 3055 3056 3057 3058
void SSL_set_tmp_ecdh_callback(SSL *ssl,
                               EC_KEY *(*ecdh) (SSL *ssl, int is_export,
                                                int keylength))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
}
B
Bodo Möller 已提交
3059 3060
#endif

3061 3062
#ifndef OPENSSL_NO_PSK
int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3063 3064 3065 3066 3067 3068
{
    if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
        SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
               SSL_R_DATA_LENGTH_TOO_LONG);
        return 0;
    }
R
Rich Salz 已提交
3069
    OPENSSL_free(ctx->psk_identity_hint);
3070 3071 3072 3073 3074 3075 3076 3077
    if (identity_hint != NULL) {
        ctx->psk_identity_hint = BUF_strdup(identity_hint);
        if (ctx->psk_identity_hint == NULL)
            return 0;
    } else
        ctx->psk_identity_hint = NULL;
    return 1;
}
3078 3079

int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090
{
    if (s == NULL)
        return 0;

    if (s->session == NULL)
        return 1;               /* session not created yet, ignored */

    if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
        SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
        return 0;
    }
R
Rich Salz 已提交
3091
    OPENSSL_free(s->session->psk_identity_hint);
3092 3093 3094 3095 3096 3097 3098 3099
    if (identity_hint != NULL) {
        s->session->psk_identity_hint = BUF_strdup(identity_hint);
        if (s->session->psk_identity_hint == NULL)
            return 0;
    } else
        s->session->psk_identity_hint = NULL;
    return 1;
}
3100 3101

const char *SSL_get_psk_identity_hint(const SSL *s)
3102 3103 3104 3105 3106
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity_hint);
}
3107 3108

const char *SSL_get_psk_identity(const SSL *s)
3109 3110 3111 3112 3113
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity);
}
N
Nils Larsch 已提交
3114

3115
void SSL_set_psk_client_callback(SSL *s,
3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126
                                 unsigned int (*cb) (SSL *ssl,
                                                     const char *hint,
                                                     char *identity,
                                                     unsigned int
                                                     max_identity_len,
                                                     unsigned char *psk,
                                                     unsigned int
                                                     max_psk_len))
{
    s->psk_client_callback = cb;
}
N
Nils Larsch 已提交
3127 3128

void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139
                                     unsigned int (*cb) (SSL *ssl,
                                                         const char *hint,
                                                         char *identity,
                                                         unsigned int
                                                         max_identity_len,
                                                         unsigned char *psk,
                                                         unsigned int
                                                         max_psk_len))
{
    ctx->psk_client_callback = cb;
}
N
Nils Larsch 已提交
3140

3141
void SSL_set_psk_server_callback(SSL *s,
3142 3143 3144 3145 3146 3147 3148 3149
                                 unsigned int (*cb) (SSL *ssl,
                                                     const char *identity,
                                                     unsigned char *psk,
                                                     unsigned int
                                                     max_psk_len))
{
    s->psk_server_callback = cb;
}
N
Nils Larsch 已提交
3150 3151

void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176
                                     unsigned int (*cb) (SSL *ssl,
                                                         const char *identity,
                                                         unsigned char *psk,
                                                         unsigned int
                                                         max_psk_len))
{
    ctx->psk_server_callback = cb;
}
#endif

void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
                              void (*cb) (int write_p, int version,
                                          int content_type, const void *buf,
                                          size_t len, SSL *ssl, void *arg))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
}

void SSL_set_msg_callback(SSL *ssl,
                          void (*cb) (int write_p, int version,
                                      int content_type, const void *buf,
                                      size_t len, SSL *ssl, void *arg))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
}
3177

3178
void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3179 3180 3181 3182 3183 3184 3185 3186
                                                int (*cb) (SSL *ssl,
                                                           int
                                                           is_forward_secure))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
                          (void (*)(void))cb);
}

3187
void SSL_set_not_resumable_session_callback(SSL *ssl,
3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199
                                            int (*cb) (SSL *ssl,
                                                       int is_forward_secure))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
                      (void (*)(void))cb);
}

/*
 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
 * allocated ctx;
B
Ben Laurie 已提交
3200
 */
3201

3202
EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3203
{
3204 3205 3206 3207 3208
    ssl_clear_hash_ctx(hash);
    *hash = EVP_MD_CTX_create();
    if (md)
        EVP_DigestInit_ex(*hash, md, NULL);
    return *hash;
3209
}
3210 3211

void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3212 3213
{

3214 3215 3216
    if (*hash)
        EVP_MD_CTX_destroy(*hash);
    *hash = NULL;
3217
}
3218

3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247
/* Retrieve handshake hashes */
int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
{
    unsigned char *p = out;
    int idx, ret = 0;
    long mask;
    EVP_MD_CTX ctx;
    const EVP_MD *md;
    EVP_MD_CTX_init(&ctx);
    for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
        if (mask & ssl_get_algorithm2(s)) {
            int hashsize = EVP_MD_size(md);
            EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
            if (!hdgst || hashsize < 0 || hashsize > outlen)
                goto err;
            if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
                goto err;
            if (!EVP_DigestFinal_ex(&ctx, p, NULL))
                goto err;
            p += hashsize;
            outlen -= hashsize;
        }
    }
    ret = p - out;
 err:
    EVP_MD_CTX_cleanup(&ctx);
    return ret;
}

3248
void SSL_set_debug(SSL *s, int debug)
3249 3250 3251
{
    s->debug = debug;
}
3252 3253

int SSL_cache_hit(SSL *s)
3254 3255 3256
{
    return s->hit;
}
3257

3258
int SSL_is_server(SSL *s)
3259 3260 3261
{
    return s->server;
}
3262

D
Dr. Stephen Henson 已提交
3263
void SSL_set_security_level(SSL *s, int level)
3264 3265 3266
{
    s->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3267 3268

int SSL_get_security_level(const SSL *s)
3269 3270 3271
{
    return s->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3272

3273 3274 3275 3276 3277 3278 3279
void SSL_set_security_callback(SSL *s,
                               int (*cb) (SSL *s, SSL_CTX *ctx, int op,
                                          int bits, int nid, void *other,
                                          void *ex))
{
    s->cert->sec_cb = cb;
}
D
Dr. Stephen Henson 已提交
3280

3281 3282 3283 3284 3285
int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
                                                int bits, int nid,
                                                void *other, void *ex) {
    return s->cert->sec_cb;
}
D
Dr. Stephen Henson 已提交
3286 3287

void SSL_set0_security_ex_data(SSL *s, void *ex)
3288 3289 3290
{
    s->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3291 3292

void *SSL_get0_security_ex_data(const SSL *s)
3293 3294 3295
{
    return s->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3296 3297

void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3298 3299 3300
{
    ctx->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3301 3302

int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3303 3304 3305
{
    return ctx->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3306

3307 3308 3309 3310 3311 3312 3313
void SSL_CTX_set_security_callback(SSL_CTX *ctx,
                                   int (*cb) (SSL *s, SSL_CTX *ctx, int op,
                                              int bits, int nid, void *other,
                                              void *ex))
{
    ctx->cert->sec_cb = cb;
}
D
Dr. Stephen Henson 已提交
3314

3315 3316 3317 3318 3319 3320 3321 3322
int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
                                                          SSL_CTX *ctx,
                                                          int op, int bits,
                                                          int nid,
                                                          void *other,
                                                          void *ex) {
    return ctx->cert->sec_cb;
}
D
Dr. Stephen Henson 已提交
3323 3324

void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3325 3326 3327
{
    ctx->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3328 3329

void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3330 3331 3332
{
    return ctx->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3333

3334
IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);