1 /* $OpenBSD: ssl_locl.h,v 1.245 2019/04/04 16:44:24 jsing Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
143 #ifndef HEADER_SSL_LOCL_H
144 #define HEADER_SSL_LOCL_H
146 #include <sys/types.h>
154 #include <openssl/opensslconf.h>
155 #include <openssl/bio.h>
156 #include <openssl/buffer.h>
157 #include <openssl/dsa.h>
158 #include <openssl/err.h>
159 #include <openssl/rsa.h>
160 #include <openssl/ssl.h>
161 #include <openssl/stack.h>
163 #include "bytestring.h"
164 #include "ssl_sigalgs.h"
165 #include "tls13_internal.h"
169 #define CTASSERT(x) extern char _ctassert[(x) ? 1 : -1 ] \
170 __attribute__((__unused__))
172 #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
173 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
174 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
175 *((c)++)=(unsigned char)(((l) )&0xff))
177 #define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
178 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
179 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
180 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
181 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
182 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
183 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
184 *((c)++)=(unsigned char)(((l) )&0xff))
186 #define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
187 c[1]=(unsigned char)(((s) )&0xff)),c+=2)
191 #define SSL_DECRYPT 0
192 #define SSL_ENCRYPT 1
195 * Define the Bitmasks for SSL_CIPHER.algorithms.
196 * This bits are used packed as dense as possible. If new methods/ciphers
197 * etc will be added, the bits a likely to change, so this information
198 * is for internal library use only, even though SSL_CIPHER.algorithms
199 * can be publicly accessed.
200 * Use the according functions for cipher management instead.
202 * The bit mask handling in the selection and sorting scheme in
203 * ssl_create_cipher_list() has only limited capabilities, reflecting
204 * that the different entities within are mutually exclusive:
205 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
208 /* Bits for algorithm_mkey (key exchange algorithm) */
209 #define SSL_kRSA 0x00000001L /* RSA key exchange */
210 #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */
211 #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */
212 #define SSL_kGOST 0x00000200L /* GOST key exchange */
213 #define SSL_kTLS1_3 0x00000400L /* TLSv1.3 key exchange */
215 /* Bits for algorithm_auth (server authentication) */
216 #define SSL_aRSA 0x00000001L /* RSA auth */
217 #define SSL_aDSS 0x00000002L /* DSS auth */
218 #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */
219 #define SSL_aECDSA 0x00000040L /* ECDSA auth*/
220 #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */
221 #define SSL_aTLS1_3 0x00000400L /* TLSv1.3 authentication */
223 /* Bits for algorithm_enc (symmetric encryption) */
224 #define SSL_DES 0x00000001L
225 #define SSL_3DES 0x00000002L
226 #define SSL_RC4 0x00000004L
227 #define SSL_IDEA 0x00000008L
228 #define SSL_eNULL 0x00000010L
229 #define SSL_AES128 0x00000020L
230 #define SSL_AES256 0x00000040L
231 #define SSL_CAMELLIA128 0x00000080L
232 #define SSL_CAMELLIA256 0x00000100L
233 #define SSL_eGOST2814789CNT 0x00000200L
234 #define SSL_AES128GCM 0x00000400L
235 #define SSL_AES256GCM 0x00000800L
236 #define SSL_CHACHA20POLY1305 0x00001000L
238 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
239 #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
242 /* Bits for algorithm_mac (symmetric authentication) */
244 #define SSL_MD5 0x00000001L
245 #define SSL_SHA1 0x00000002L
246 #define SSL_GOST94 0x00000004L
247 #define SSL_GOST89MAC 0x00000008L
248 #define SSL_SHA256 0x00000010L
249 #define SSL_SHA384 0x00000020L
250 /* Not a real MAC, just an indication it is part of cipher */
251 #define SSL_AEAD 0x00000040L
252 #define SSL_STREEBOG256 0x00000080L
254 /* Bits for algorithm_ssl (protocol version) */
255 #define SSL_SSLV3 0x00000002L
256 #define SSL_TLSV1 SSL_SSLV3 /* for now */
257 #define SSL_TLSV1_2 0x00000004L
258 #define SSL_TLSV1_3 0x00000008L
261 /* Bits for algorithm2 (handshake digests and other extra flags) */
263 #define SSL_HANDSHAKE_MAC_MASK 0xff0
264 #define SSL_HANDSHAKE_MAC_MD5 0x010
265 #define SSL_HANDSHAKE_MAC_SHA 0x020
266 #define SSL_HANDSHAKE_MAC_GOST94 0x040
267 #define SSL_HANDSHAKE_MAC_SHA256 0x080
268 #define SSL_HANDSHAKE_MAC_SHA384 0x100
269 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200
270 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
272 #define SSL3_CK_ID 0x03000000
273 #define SSL3_CK_VALUE_MASK 0x0000ffff
275 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT)
277 #define TLS1_PRF_DGST_SHIFT 10
278 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
279 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
280 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
281 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
282 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
283 #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT)
284 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
287 * Stream MAC for GOST ciphersuites from cryptopro draft
288 * (currently this also goes into algorithm2).
290 #define TLS1_STREAM_MAC 0x04
293 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that
294 * indicates that the variable part of the nonce is included as a prefix of
295 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.)
297 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22)
300 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce
301 * for an SSL_CIPHER with an algorithm_mac of SSL_AEAD.
303 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \
304 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2)
307 * Cipher strength information.
309 #define SSL_STRONG_MASK 0x000001fcL
310 #define SSL_STRONG_NONE 0x00000004L
311 #define SSL_LOW 0x00000020L
312 #define SSL_MEDIUM 0x00000040L
313 #define SSL_HIGH 0x00000080L
316 * The keylength (measured in RSA key bits, I guess) for temporary keys.
317 * Cipher argument is so that this can be variable in the future.
319 #define SSL_C_PKEYLENGTH(c) 1024
321 /* Check if an SSL structure is using DTLS. */
322 #define SSL_IS_DTLS(s) \
323 (s->method->internal->version == DTLS1_VERSION)
325 /* See if we need explicit IV. */
326 #define SSL_USE_EXPLICIT_IV(s) \
327 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
329 /* See if we use signature algorithms extension. */
330 #define SSL_USE_SIGALGS(s) \
331 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
333 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */
334 #define SSL_USE_TLS1_2_CIPHERS(s) \
335 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
337 #define SSL_PKEY_RSA_ENC 0
338 #define SSL_PKEY_RSA_SIGN 1
339 #define SSL_PKEY_DH_RSA 2
340 #define SSL_PKEY_ECC 3
341 #define SSL_PKEY_GOST01 4
342 #define SSL_PKEY_NUM 5
344 #define SSL_MAX_EMPTY_RECORDS 32
346 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
347 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
348 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
349 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
350 * SSL_aRSA <- RSA_ENC | RSA_SIGN
351 * SSL_aDSS <- DSA_SIGN
355 #define CERT_INVALID 0
356 #define CERT_PUBLIC_KEY 1
357 #define CERT_PRIVATE_KEY 2
360 /* From ECC-TLS draft, used in encoding the curve type in
363 #define EXPLICIT_PRIME_CURVE_TYPE 1
364 #define EXPLICIT_CHAR2_CURVE_TYPE 2
365 #define NAMED_CURVE_TYPE 3
367 typedef struct ssl_method_internal_st {
370 uint16_t min_version;
371 uint16_t max_version;
373 int (*ssl_new)(SSL *s);
374 void (*ssl_clear)(SSL *s);
375 void (*ssl_free)(SSL *s);
377 int (*ssl_accept)(SSL *s);
378 int (*ssl_connect)(SSL *s);
380 int (*ssl_renegotiate)(SSL *s);
381 int (*ssl_renegotiate_check)(SSL *s);
383 long (*ssl_get_message)(SSL *s, int st1, int stn, int mt,
385 int (*ssl_read_bytes)(SSL *s, int type, unsigned char *buf,
387 int (*ssl_write_bytes)(SSL *s, int type, const void *buf_, int len);
389 const struct ssl_method_st *(*get_ssl_method)(int version);
391 long (*get_timeout)(void);
392 int (*ssl_version)(void);
394 struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
395 } SSL_METHOD_INTERNAL;
397 typedef struct ssl_session_internal_st {
398 CRYPTO_EX_DATA ex_data; /* application specific data */
400 /* These are used to make removal of session-ids more
401 * efficient and to implement a maximum cache size. */
402 struct ssl_session_st *prev, *next;
404 /* Used to indicate that session resumption is not allowed.
405 * Applications can also set this bit for a new session via
406 * not_resumable_session_cb to disable session caching and tickets. */
409 /* The cert is the certificate used to establish this connection */
410 struct sess_cert_st /* SESS_CERT */ *sess_cert;
412 size_t tlsext_ecpointformatlist_length;
413 uint8_t *tlsext_ecpointformatlist; /* peer's list */
414 size_t tlsext_supportedgroups_length;
415 uint16_t *tlsext_supportedgroups; /* peer's list */
416 } SSL_SESSION_INTERNAL;
417 #define SSI(s) (s->session->internal)
419 typedef struct ssl_handshake_st {
420 /* state contains one of the SSL3_ST_* values. */
423 /* used when SSL_ST_FLUSH_DATA is entered */
426 /* new_cipher is the cipher being negotiated in this handshake. */
427 const SSL_CIPHER *new_cipher;
429 /* key_block is the record-layer key block for TLS 1.2 and earlier. */
431 unsigned char *key_block;
433 /* Extensions seen in this handshake. */
434 uint32_t extensions_seen;
436 /* sigalgs offered in this handshake in wire form */
441 typedef struct ssl_handshake_tls13_st {
442 uint16_t min_version;
443 uint16_t max_version;
446 /* Version proposed by peer server. */
447 uint16_t server_version;
449 /* X25519 key share. */
450 uint8_t *x25519_public;
451 uint8_t *x25519_private;
452 uint8_t *x25519_peer_public;
454 struct tls13_secrets *secrets;
459 /* Preserved transcript hash. */
460 uint8_t transcript_hash[EVP_MAX_MD_SIZE];
461 size_t transcript_hash_len;
462 } SSL_HANDSHAKE_TLS13;
464 typedef struct ssl_ctx_internal_st {
465 uint16_t min_version;
466 uint16_t max_version;
468 unsigned long options;
471 /* If this callback is not null, it will be called each
472 * time a session id is added to the cache. If this function
473 * returns 1, it means that the callback will do a
474 * SSL_SESSION_free() when it has finished using it. Otherwise,
475 * on 0, it means the callback has finished with it.
476 * If remove_session_cb is not null, it will be called when
477 * a session-id is removed from the cache. After the call,
478 * OpenSSL will SSL_SESSION_free() it. */
479 int (*new_session_cb)(struct ssl_st *ssl, SSL_SESSION *sess);
480 void (*remove_session_cb)(struct ssl_ctx_st *ctx, SSL_SESSION *sess);
481 SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl,
482 const unsigned char *data, int len, int *copy);
484 /* if defined, these override the X509_verify_cert() calls */
485 int (*app_verify_callback)(X509_STORE_CTX *, void *);
486 void *app_verify_arg;
488 /* get client cert callback */
489 int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
491 /* cookie generate callback */
492 int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie,
493 unsigned int *cookie_len);
495 /* verify cookie callback */
496 int (*app_verify_cookie_cb)(SSL *ssl, const unsigned char *cookie,
497 unsigned int cookie_len);
499 void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */
501 /* callback that allows applications to peek at protocol messages */
502 void (*msg_callback)(int write_p, int version, int content_type,
503 const void *buf, size_t len, SSL *ssl, void *arg);
504 void *msg_callback_arg;
506 int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */
508 /* Default generate session ID callback. */
509 GEN_SESSION_CB generate_session_id;
511 /* TLS extensions servername callback */
512 int (*tlsext_servername_callback)(SSL*, int *, void *);
513 void *tlsext_servername_arg;
515 /* Callback to support customisation of ticket key setting */
516 int (*tlsext_ticket_key_cb)(SSL *ssl, unsigned char *name,
517 unsigned char *iv, EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
519 /* certificate status request info */
520 /* Callback for status request */
521 int (*tlsext_status_cb)(SSL *ssl, void *arg);
522 void *tlsext_status_arg;
524 struct lhash_st_SSL_SESSION *sessions;
526 /* Most session-ids that will be cached, default is
527 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */
528 unsigned long session_cache_size;
529 struct ssl_session_st *session_cache_head;
530 struct ssl_session_st *session_cache_tail;
532 /* This can have one of 2 values, ored together,
533 * SSL_SESS_CACHE_CLIENT,
534 * SSL_SESS_CACHE_SERVER,
535 * Default is SSL_SESSION_CACHE_SERVER, which means only
536 * SSL_accept which cache SSL_SESSIONS. */
537 int session_cache_mode;
540 int sess_connect; /* SSL new conn - started */
541 int sess_connect_renegotiate;/* SSL reneg - requested */
542 int sess_connect_good; /* SSL new conne/reneg - finished */
543 int sess_accept; /* SSL new accept - started */
544 int sess_accept_renegotiate;/* SSL reneg - requested */
545 int sess_accept_good; /* SSL accept/reneg - finished */
546 int sess_miss; /* session lookup misses */
547 int sess_timeout; /* reuse attempt on timeouted session */
548 int sess_cache_full; /* session removed due to full cache */
549 int sess_hit; /* session reuse actually done */
550 int sess_cb_hit; /* session-id that was not
552 * passed back via the callback. This
553 * indicates that the application is
554 * supplying session-id's from other
555 * processes - spooky :-) */
558 CRYPTO_EX_DATA ex_data;
560 /* same cipher_list but sorted for lookup */
561 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
563 struct cert_st /* CERT */ *cert;
565 /* Default values used when no per-SSL value is defined follow */
567 /* what we put in client cert requests */
568 STACK_OF(X509_NAME) *client_CA;
576 /* Maximum amount of data to send in one fragment.
577 * actual record size can be more than this due to
578 * padding and MAC overheads.
580 unsigned int max_send_fragment;
582 #ifndef OPENSSL_NO_ENGINE
583 /* Engine to pass requests for client certs to
585 ENGINE *client_cert_engine;
588 /* RFC 4507 session ticket keys */
589 unsigned char tlsext_tick_key_name[16];
590 unsigned char tlsext_tick_hmac_key[16];
591 unsigned char tlsext_tick_aes_key[16];
593 /* SRTP profiles we are willing to do from RFC 5764 */
594 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
601 * Server callback function that allows the server to select the
602 * protocol for the connection.
603 * out: on successful return, this must point to the raw protocol
604 * name (without the length prefix).
605 * outlen: on successful return, this contains the length of out.
606 * in: points to the client's list of supported protocols in
608 * inlen: the length of in.
610 int (*alpn_select_cb)(SSL *s, const unsigned char **out,
611 unsigned char *outlen, const unsigned char *in, unsigned int inlen,
613 void *alpn_select_cb_arg;
615 /* Client list of supported protocols in wire format. */
616 unsigned char *alpn_client_proto_list;
617 unsigned int alpn_client_proto_list_len;
619 size_t tlsext_ecpointformatlist_length;
620 uint8_t *tlsext_ecpointformatlist; /* our list */
621 size_t tlsext_supportedgroups_length;
622 uint16_t *tlsext_supportedgroups; /* our list */
625 typedef struct ssl_internal_st {
626 struct tls13_ctx *tls13;
628 uint16_t min_version;
629 uint16_t max_version;
631 unsigned long options; /* protocol behaviour */
632 unsigned long mode; /* API behaviour */
634 /* Client list of supported protocols in wire format. */
635 unsigned char *alpn_client_proto_list;
636 unsigned int alpn_client_proto_list_len;
640 /* true when we are actually in SSL_accept() or SSL_connect() */
642 int (*handshake_func)(SSL *);
643 /* callback that allows applications to peek at protocol messages */
644 void (*msg_callback)(int write_p, int version, int content_type,
645 const void *buf, size_t len, SSL *ssl, void *arg);
646 void *msg_callback_arg;
648 /* Default generate session ID callback. */
649 GEN_SESSION_CB generate_session_id;
651 int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */
653 void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */
655 /* TLS extension debug callback */
656 void (*tlsext_debug_cb)(SSL *s, int client_server, int type,
657 unsigned char *data, int len, void *arg);
658 void *tlsext_debug_arg;
660 /* TLS Session Ticket extension callback */
661 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
662 void *tls_session_ticket_ext_cb_arg;
664 /* TLS pre-shared secret session resumption */
665 tls_session_secret_cb_fn tls_session_secret_cb;
666 void *tls_session_secret_cb_arg;
668 /* XXX non-callback */
670 int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */
672 /* This holds a variable that indicates what we were doing
673 * when a 0 or -1 is returned. This is needed for
674 * non-blocking IO so we know what request needs re-doing when
675 * in SSL_accept or SSL_connect */
678 /* Imagine that here's a boolean member "init" that is
679 * switched as soon as SSL_set_{accept/connect}_state
680 * is called for the first time, so that "state" and
681 * "handshake_func" are properly initialized. But as
682 * handshake_func is == 0 until then, we use this
683 * test instead of an "init" member.
686 int new_session;/* Generate a new session or reuse an old one.
687 * NB: For servers, the 'new' session may actually be a previously
688 * cached session or even the previous session unless
689 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */
690 int quiet_shutdown;/* don't send shutdown packets */
691 int shutdown; /* we have shut things down, 0x01 sent, 0x02
693 BUF_MEM *init_buf; /* buffer used during init */
694 void *init_msg; /* pointer to handshake message body, set by ssl3_get_message() */
695 int init_num; /* amount read/written */
696 int init_off; /* amount read/written */
698 /* used internally to point at a raw packet */
699 unsigned char *packet;
700 unsigned int packet_length;
702 int read_ahead; /* Read as many input bytes as possible
703 * (for non-blocking reads) */
705 int hit; /* reusing a previous session */
708 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
710 /* These are the ones being used, the ones in SSL_SESSION are
711 * the ones to be 'copied' into these ones */
714 SSL_AEAD_CTX *aead_read_ctx; /* AEAD context. If non-NULL, then
715 enc_read_ctx and read_hash are
718 SSL_AEAD_CTX *aead_write_ctx; /* AEAD context. If non-NULL, then
719 enc_write_ctx and write_hash are
722 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
723 EVP_MD_CTX *write_hash; /* used for mac generation */
727 /* extra application data */
728 CRYPTO_EX_DATA ex_data;
731 /* for server side, keep the list of CA_dn we can use */
732 STACK_OF(X509_NAME) *client_CA;
734 /* set this flag to 1 and a sleep(1) is put into all SSL_read()
735 * and SSL_write() calls, good for nbio debuging :-) */
740 int servername_done; /* no further mod of servername
741 0 : call the servername extension callback.
742 1 : prepare 2, allow last ack just after in server callback.
743 2 : don't call servername callback, no ack in server hello
746 /* Expect OCSP CertificateStatus message */
747 int tlsext_status_expected;
748 /* OCSP status request only */
749 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
750 X509_EXTENSIONS *tlsext_ocsp_exts;
751 /* OCSP response received or to be sent */
752 unsigned char *tlsext_ocsp_resp;
753 int tlsext_ocsp_resplen;
755 /* RFC4507 session ticket expected to be received or sent */
756 int tlsext_ticket_expected;
758 size_t tlsext_ecpointformatlist_length;
759 uint8_t *tlsext_ecpointformatlist; /* our list */
760 size_t tlsext_supportedgroups_length;
761 uint16_t *tlsext_supportedgroups; /* our list */
763 /* TLS Session Ticket extension override */
764 TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
766 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles; /* What we'll do */
767 SRTP_PROTECTION_PROFILE *srtp_profile; /* What's been chosen */
769 int renegotiate;/* 1 if we are renegotiating.
770 * 2 if we are a server and are inside a handshake
771 * (i.e. not just sending a HelloRequest) */
773 int rstate; /* where we are when reading */
777 int empty_record_count;
780 typedef struct ssl3_state_internal_st {
781 unsigned char read_sequence[SSL3_SEQUENCE_SIZE];
782 int read_mac_secret_size;
783 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
784 unsigned char write_sequence[SSL3_SEQUENCE_SIZE];
785 int write_mac_secret_size;
786 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
788 SSL3_BUFFER rbuf; /* read IO goes into here */
789 SSL3_BUFFER wbuf; /* write IO goes into here */
791 /* we allow one fatal and one warning alert to be outstanding,
792 * send close alert via the warning alert */
794 unsigned char send_alert[2];
796 /* flags for countermeasure against known-IV weakness */
797 int need_empty_fragments;
798 int empty_fragment_done;
800 SSL3_RECORD rrec; /* each decoded record goes in here */
801 SSL3_RECORD wrec; /* goes out from here */
803 /* storage for Alert/Handshake protocol data received but not
804 * yet processed by ssl3_read_bytes: */
805 unsigned char alert_fragment[2];
806 unsigned int alert_fragment_len;
807 unsigned char handshake_fragment[4];
808 unsigned int handshake_fragment_len;
810 /* partial write - check the numbers match */
811 unsigned int wnum; /* number of bytes sent so far */
812 int wpend_tot; /* number bytes written */
814 int wpend_ret; /* number of bytes submitted */
815 const unsigned char *wpend_buf;
817 /* Transcript of handshake messages that have been sent and received. */
818 BUF_MEM *handshake_transcript;
820 /* Rolling hash of handshake messages. */
821 EVP_MD_CTX *handshake_hash;
823 /* this is set whenerver we see a change_cipher_spec message
824 * come in when we are not looking for one */
825 int change_cipher_spec;
830 /* This flag is set when we should renegotiate ASAP, basically when
831 * there is no more data in the read or write buffers */
833 int total_renegotiations;
834 int num_renegotiations;
836 int in_read_app_data;
839 SSL_HANDSHAKE_TLS13 hs_tls13;
842 int new_mac_secret_size;
844 /* actually only needs to be 16+20 */
845 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
847 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
848 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
850 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
851 int peer_finish_md_len;
853 unsigned long message_size;
858 EC_KEY *ecdh; /* holds short lived ECDH key */
864 /* used for certificate requests */
867 char ctype[SSL3_CT_NUMBER];
868 STACK_OF(X509_NAME) *ca_names;
870 const EVP_CIPHER *new_sym_enc;
871 const EVP_AEAD *new_aead;
872 const EVP_MD *new_hash;
873 int new_mac_pkey_type;
877 /* Connection binding to prevent renegotiation attacks */
878 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
879 unsigned char previous_client_finished_len;
880 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
881 unsigned char previous_server_finished_len;
882 int send_connection_binding; /* TODOEKR */
884 /* Set if we saw a Renegotiation Indication extension from our peer. */
885 int renegotiate_seen;
890 * In a server these point to the selected ALPN protocol after the
891 * ClientHello has been processed. In a client these contain the
892 * protocol that the server selected once the ServerHello has been
895 unsigned char *alpn_selected;
896 size_t alpn_selected_len;
897 } SSL3_STATE_INTERNAL;
898 #define S3I(s) (s->s3->internal)
900 typedef struct dtls1_state_internal_st {
901 unsigned int send_cookie;
902 unsigned char cookie[DTLS1_COOKIE_LENGTH];
903 unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH];
904 unsigned int cookie_len;
907 * The current data and handshake epoch. This is initially
908 * undefined, and starts at zero once the initial handshake is
911 unsigned short r_epoch;
912 unsigned short w_epoch;
914 /* records being received in the current epoch */
917 /* renegotiation starts a new set of sequence numbers */
918 DTLS1_BITMAP next_bitmap;
920 /* handshake message numbers */
921 unsigned short handshake_write_seq;
922 unsigned short next_handshake_write_seq;
924 unsigned short handshake_read_seq;
926 /* save last sequence number for retransmissions */
927 unsigned char last_write_sequence[8];
929 /* Received handshake records (processed and unprocessed) */
930 record_pqueue unprocessed_rcds;
931 record_pqueue processed_rcds;
933 /* Buffered handshake messages */
934 struct _pqueue *buffered_messages;
936 /* Buffered application records.
937 * Only for records between CCS and Finished
938 * to prevent either protocol violation or
939 * unnecessary message loss.
941 record_pqueue buffered_app_data;
943 /* Is set when listening for new connections with dtls1_listen() */
946 unsigned int mtu; /* max DTLS packet size */
948 struct hm_header_st w_msg_hdr;
949 struct hm_header_st r_msg_hdr;
951 struct dtls1_timeout_st timeout;
953 /* storage for Alert/Handshake protocol data received but not
954 * yet processed by ssl3_read_bytes: */
955 unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH];
956 unsigned int alert_fragment_len;
957 unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH];
958 unsigned int handshake_fragment_len;
960 unsigned int retransmitting;
961 unsigned int change_cipher_spec_ok;
962 } DTLS1_STATE_INTERNAL;
963 #define D1I(s) (s->d1->internal)
965 typedef struct cert_pkey_st {
967 EVP_PKEY *privatekey;
968 STACK_OF(X509) *chain;
971 typedef struct cert_st {
972 /* Current active set */
973 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
974 * Probably it would make more sense to store
975 * an index, not a pointer. */
977 /* The following masks are for the key and auth
978 * algorithms that are supported by the certs below */
980 unsigned long mask_k;
981 unsigned long mask_a;
984 DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize);
987 CERT_PKEY pkeys[SSL_PKEY_NUM];
989 int references; /* >1 only if SSL_copy_session_id is used */
993 typedef struct sess_cert_st {
994 STACK_OF(X509) *cert_chain; /* as received from peer */
996 /* The 'peer_...' members are used only by clients. */
999 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
1000 CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
1001 /* Obviously we don't have the private keys of these,
1002 * so maybe we shouldn't even use the CERT_PKEY type here. */
1005 EC_KEY *peer_ecdh_tmp;
1006 uint8_t *peer_x25519_tmp;
1008 int references; /* actually always 1 at the moment */
1011 /*#define SSL_DEBUG */
1012 /*#define RSA_DEBUG */
1014 typedef struct ssl3_enc_method {
1015 int (*enc)(SSL *, int);
1016 unsigned int enc_flags;
1020 * Flag values for enc_flags.
1023 /* Uses explicit IV. */
1024 #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0)
1026 /* Uses signature algorithms extension. */
1027 #define SSL_ENC_FLAG_SIGALGS (1 << 1)
1029 /* Uses SHA256 default PRF. */
1030 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2)
1032 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */
1033 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4)
1036 * ssl_aead_ctx_st contains information about an AEAD that is being used to
1037 * encrypt an SSL connection.
1039 struct ssl_aead_ctx_st {
1042 * fixed_nonce contains any bytes of the nonce that are fixed for all
1045 unsigned char fixed_nonce[12];
1046 unsigned char fixed_nonce_len;
1047 unsigned char variable_nonce_len;
1048 unsigned char xor_fixed_nonce;
1049 unsigned char tag_len;
1051 * variable_nonce_in_record is non-zero if the variable nonce
1052 * for a record is included as a prefix before the ciphertext.
1054 char variable_nonce_in_record;
1057 extern SSL_CIPHER ssl3_ciphers[];
1059 const char *ssl_version_string(int ver);
1060 int ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver);
1061 int ssl_supported_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver);
1062 int ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver);
1063 int ssl_version_set_min(const SSL_METHOD *meth, uint16_t ver, uint16_t max_ver,
1065 int ssl_version_set_max(const SSL_METHOD *meth, uint16_t ver, uint16_t min_ver,
1067 uint16_t ssl_max_server_version(SSL *s);
1068 int ssl_cipher_is_permitted(const SSL_CIPHER *cipher, uint16_t min_ver,
1071 const SSL_METHOD *tls_legacy_client_method(void);
1073 const SSL_METHOD *dtls1_get_client_method(int ver);
1074 const SSL_METHOD *dtls1_get_server_method(int ver);
1075 const SSL_METHOD *tls1_get_client_method(int ver);
1076 const SSL_METHOD *tls1_get_server_method(int ver);
1078 extern SSL3_ENC_METHOD DTLSv1_enc_data;
1079 extern SSL3_ENC_METHOD TLSv1_enc_data;
1080 extern SSL3_ENC_METHOD TLSv1_1_enc_data;
1081 extern SSL3_ENC_METHOD TLSv1_2_enc_data;
1083 void ssl_clear_cipher_state(SSL *s);
1084 void ssl_clear_cipher_read_state(SSL *s);
1085 void ssl_clear_cipher_write_state(SSL *s);
1086 int ssl_clear_bad_session(SSL *s);
1088 CERT *ssl_cert_new(void);
1089 CERT *ssl_cert_dup(CERT *cert);
1090 void ssl_cert_free(CERT *c);
1091 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain);
1092 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain);
1093 int ssl_cert_add0_chain_cert(CERT *c, X509 *cert);
1094 int ssl_cert_add1_chain_cert(CERT *c, X509 *cert);
1096 SESS_CERT *ssl_sess_cert_new(void);
1097 void ssl_sess_cert_free(SESS_CERT *sc);
1098 int ssl_get_new_session(SSL *s, int session);
1099 int ssl_get_prev_session(SSL *s, const unsigned char *session_id,
1100 int session_id_len, CBS *ext_block);
1101 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
1102 SSL_CIPHER *OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base,
1104 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1105 const SSL_CIPHER * const *bp);
1106 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb);
1107 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, CBS *cbs);
1108 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
1109 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) **sorted,
1110 const char *rule_str);
1111 void ssl_update_cache(SSL *s, int mode);
1112 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
1113 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size);
1114 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead);
1115 int ssl_get_handshake_evp_md(SSL *s, const EVP_MD **md);
1117 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
1118 int ssl_undefined_function(SSL *s);
1119 int ssl_undefined_void_function(void);
1120 int ssl_undefined_const_function(const SSL *s);
1121 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
1122 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd,
1123 const struct ssl_sigalg **sap);
1124 DH *ssl_get_auto_dh(SSL *s);
1125 int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
1126 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
1127 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
1128 int ssl_has_ecc_ciphers(SSL *s);
1129 int ssl_verify_alarm_type(long type);
1131 int SSL_SESSION_ticket(SSL_SESSION *ss, unsigned char **out, size_t *out_len);
1133 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
1134 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1135 int ssl3_send_server_certificate(SSL *s);
1136 int ssl3_send_newsession_ticket(SSL *s);
1137 int ssl3_send_cert_status(SSL *s);
1138 int ssl3_get_finished(SSL *s, int state_a, int state_b);
1139 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b);
1140 int ssl3_do_write(SSL *s, int type);
1141 int ssl3_send_alert(SSL *s, int level, int desc);
1142 int ssl3_get_req_cert_types(SSL *s, CBB *cbb);
1143 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1144 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen);
1145 int ssl3_num_ciphers(void);
1146 const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
1147 const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id);
1148 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value);
1149 uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c);
1150 int ssl3_renegotiate(SSL *ssl);
1152 int ssl3_renegotiate_check(SSL *ssl);
1154 int ssl3_dispatch_alert(SSL *s);
1155 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
1156 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
1157 int ssl3_output_cert_chain(SSL *s, CBB *cbb, CERT_PKEY *cpk);
1158 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt,
1159 STACK_OF(SSL_CIPHER) *srvr);
1160 int ssl3_setup_buffers(SSL *s);
1161 int ssl3_setup_init_buffer(SSL *s);
1162 int ssl3_setup_read_buffer(SSL *s);
1163 int ssl3_setup_write_buffer(SSL *s);
1164 int ssl3_release_read_buffer(SSL *s);
1165 int ssl3_release_write_buffer(SSL *s);
1166 int ssl3_new(SSL *s);
1167 void ssl3_free(SSL *s);
1168 int ssl3_accept(SSL *s);
1169 int ssl3_connect(SSL *s);
1170 int ssl3_read(SSL *s, void *buf, int len);
1171 int ssl3_peek(SSL *s, void *buf, int len);
1172 int ssl3_write(SSL *s, const void *buf, int len);
1173 int ssl3_shutdown(SSL *s);
1174 void ssl3_clear(SSL *s);
1175 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
1176 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
1177 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void));
1178 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void));
1179 int ssl3_pending(const SSL *s);
1181 int ssl3_handshake_msg_hdr_len(SSL *s);
1182 int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body,
1184 int ssl3_handshake_msg_finish(SSL *s, CBB *handshake);
1185 int ssl3_handshake_write(SSL *s);
1186 int ssl3_record_write(SSL *s, int type);
1188 void tls1_record_sequence_increment(unsigned char *seq);
1189 int ssl3_do_change_cipher_spec(SSL *ssl);
1191 long tls1_default_timeout(void);
1192 int dtls1_do_write(SSL *s, int type);
1193 int ssl3_packet_read(SSL *s, int plen);
1194 int ssl3_packet_extend(SSL *s, int plen);
1195 int ssl_server_legacy_first_packet(SSL *s);
1196 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
1197 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
1199 void dtls1_set_message_header(SSL *s, unsigned char mt, unsigned long len,
1200 unsigned long frag_off, unsigned long frag_len);
1201 void dtls1_set_message_header_int(SSL *s, unsigned char mt,
1202 unsigned long len, unsigned short seq_num, unsigned long frag_off,
1203 unsigned long frag_len);
1205 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
1206 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
1208 int dtls1_read_failed(SSL *s, int code);
1209 int dtls1_buffer_message(SSL *s, int ccs);
1210 int dtls1_retransmit_message(SSL *s, unsigned short seq,
1211 unsigned long frag_off, int *found);
1212 int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
1213 int dtls1_retransmit_buffered_messages(SSL *s);
1214 void dtls1_clear_record_buffer(SSL *s);
1215 int dtls1_get_message_header(unsigned char *data,
1216 struct hm_header_st *msg_hdr);
1217 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
1218 void dtls1_reset_seq_numbers(SSL *s, int rw);
1219 void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq,
1220 unsigned short epoch);
1221 long dtls1_default_timeout(void);
1222 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft);
1223 int dtls1_check_timeout_num(SSL *s);
1224 int dtls1_handle_timeout(SSL *s);
1225 const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
1226 void dtls1_start_timer(SSL *s);
1227 void dtls1_stop_timer(SSL *s);
1228 int dtls1_is_timer_expired(SSL *s);
1229 void dtls1_double_timeout(SSL *s);
1230 unsigned int dtls1_min_mtu(void);
1232 /* some client-only functions */
1233 int dtls1_get_hello_verify(SSL *s);
1234 int ssl3_send_client_hello(SSL *s);
1235 int ssl3_get_server_hello(SSL *s);
1236 int ssl3_get_certificate_request(SSL *s);
1237 int ssl3_get_new_session_ticket(SSL *s);
1238 int ssl3_get_cert_status(SSL *s);
1239 int ssl3_get_server_done(SSL *s);
1240 int ssl3_send_client_verify(SSL *s);
1241 int ssl3_send_client_certificate(SSL *s);
1242 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
1243 int ssl3_send_client_key_exchange(SSL *s);
1244 int ssl3_get_server_key_exchange(SSL *s);
1245 int ssl3_get_server_certificate(SSL *s);
1246 int ssl3_check_cert_and_algorithm(SSL *s);
1247 int ssl3_check_finished(SSL *s);
1249 /* some server-only functions */
1250 int dtls1_send_hello_verify_request(SSL *s);
1251 int ssl3_get_client_hello(SSL *s);
1252 int ssl3_send_server_hello(SSL *s);
1253 int ssl3_send_hello_request(SSL *s);
1254 int ssl3_send_server_key_exchange(SSL *s);
1255 int ssl3_send_certificate_request(SSL *s);
1256 int ssl3_send_server_done(SSL *s);
1257 int ssl3_get_client_certificate(SSL *s);
1258 int ssl3_get_client_key_exchange(SSL *s);
1259 int ssl3_get_cert_verify(SSL *s);
1261 int tls1_new(SSL *s);
1262 void tls1_free(SSL *s);
1263 void tls1_clear(SSL *s);
1265 int dtls1_new(SSL *s);
1266 void dtls1_free(SSL *s);
1267 void dtls1_clear(SSL *s);
1268 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1270 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1271 int dtls1_get_record(SSL *s);
1272 int dtls1_dispatch_alert(SSL *s);
1273 int dtls1_enc(SSL *s, int snd);
1275 int ssl_init_wbio_buffer(SSL *s, int push);
1276 void ssl_free_wbio_buffer(SSL *s);
1278 int tls1_transcript_hash_init(SSL *s);
1279 int tls1_transcript_hash_update(SSL *s, const unsigned char *buf, size_t len);
1280 int tls1_transcript_hash_value(SSL *s, const unsigned char *out, size_t len,
1282 void tls1_transcript_hash_free(SSL *s);
1284 int tls1_transcript_init(SSL *s);
1285 void tls1_transcript_free(SSL *s);
1286 void tls1_transcript_reset(SSL *s);
1287 int tls1_transcript_append(SSL *s, const unsigned char *buf, size_t len);
1288 int tls1_transcript_data(SSL *s, const unsigned char **data, size_t *len);
1289 void tls1_transcript_freeze(SSL *s);
1290 int tls1_transcript_record(SSL *s, const unsigned char *buf, size_t len);
1292 void tls1_cleanup_key_block(SSL *s);
1293 int tls1_change_cipher_state(SSL *s, int which);
1294 int tls1_setup_key_block(SSL *s);
1295 int tls1_enc(SSL *s, int snd);
1296 int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p);
1297 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1298 int tls1_generate_master_secret(SSL *s, unsigned char *out,
1299 unsigned char *p, int len);
1300 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1301 const char *label, size_t llen, const unsigned char *p, size_t plen,
1303 int tls1_alert_code(int code);
1306 int ssl_using_ecc_cipher(SSL *s);
1307 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1309 void tls1_get_formatlist(SSL *s, int client_formats, const uint8_t **pformats,
1310 size_t *pformatslen);
1311 void tls1_get_group_list(SSL *s, int client_groups, const uint16_t **pgroups,
1312 size_t *pgroupslen);
1314 int tls1_set_groups(uint16_t **out_group_ids, size_t *out_group_ids_len,
1315 const int *groups, size_t ngroups);
1316 int tls1_set_group_list(uint16_t **out_group_ids, size_t *out_group_ids_len,
1317 const char *groups);
1319 int tls1_ec_curve_id2nid(const uint16_t curve_id);
1320 uint16_t tls1_ec_nid2curve_id(const int nid);
1321 int tls1_check_curve(SSL *s, const uint16_t group_id);
1322 int tls1_get_shared_curve(SSL *s);
1324 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data,
1326 int ssl_check_clienthello_tlsext_early(SSL *s);
1327 int ssl_check_clienthello_tlsext_late(SSL *s);
1328 int ssl_check_serverhello_tlsext(SSL *s);
1330 #define tlsext_tick_md EVP_sha256
1331 int tls1_process_ticket(SSL *s, const unsigned char *session_id,
1332 int session_id_len, CBS *ext_block, SSL_SESSION **ret);
1334 long ssl_get_algorithm2(SSL *s);
1336 int tls1_check_ec_server_key(SSL *s);
1338 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p,
1339 int *len, int maxlen);
1340 int ssl_parse_clienthello_use_srtp_ext(SSL *s, const unsigned char *d,
1342 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p,
1343 int *len, int maxlen);
1344 int ssl_parse_serverhello_use_srtp_ext(SSL *s, const unsigned char *d,
1348 void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD *rec,
1349 unsigned md_size, unsigned orig_len);
1350 int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD *rec,
1351 unsigned block_size, unsigned mac_size);
1352 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
1353 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out,
1354 size_t *md_out_size, const unsigned char header[13],
1355 const unsigned char *data, size_t data_plus_mac_size,
1356 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret,
1357 unsigned mac_secret_length);
1358 int SSL_state_func_code(int _state);
1360 #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__)
1361 #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__)
1362 void SSL_error_internal(const SSL *s, int r, char *f, int l);
1364 #ifndef OPENSSL_NO_SRTP
1366 int srtp_find_profile_by_name(char *profile_name,
1367 SRTP_PROTECTION_PROFILE **pptr, unsigned len);
1368 int srtp_find_profile_by_num(unsigned profile_num,
1369 SRTP_PROTECTION_PROFILE **pptr);
1371 #endif /* OPENSSL_NO_SRTP */