1 /* $OpenBSD: ssl_locl.h,v 1.202 2018/01/27 15:30:05 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"
167 #define CTASSERT(x) extern char _ctassert[(x) ? 1 : -1 ] \
168 __attribute__((__unused__))
170 #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
171 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
172 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
173 *((c)++)=(unsigned char)(((l) )&0xff))
175 #define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
176 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
177 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
178 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
179 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
180 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
181 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
182 *((c)++)=(unsigned char)(((l) )&0xff))
184 #define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
185 (((unsigned int)(c[1])) )),c+=2)
186 #define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
187 c[1]=(unsigned char)(((s) )&0xff)),c+=2)
189 #define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
190 c[1]=(unsigned char)(((l)>> 8)&0xff), \
191 c[2]=(unsigned char)(((l) )&0xff)),c+=3)
195 #define SSL_DECRYPT 0
196 #define SSL_ENCRYPT 1
199 * Define the Bitmasks for SSL_CIPHER.algorithms.
200 * This bits are used packed as dense as possible. If new methods/ciphers
201 * etc will be added, the bits a likely to change, so this information
202 * is for internal library use only, even though SSL_CIPHER.algorithms
203 * can be publicly accessed.
204 * Use the according functions for cipher management instead.
206 * The bit mask handling in the selection and sorting scheme in
207 * ssl_create_cipher_list() has only limited capabilities, reflecting
208 * that the different entities within are mutually exclusive:
209 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
212 /* Bits for algorithm_mkey (key exchange algorithm) */
213 #define SSL_kRSA 0x00000001L /* RSA key exchange */
214 #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */
215 #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */
216 #define SSL_kGOST 0x00000200L /* GOST key exchange */
218 /* Bits for algorithm_auth (server authentication) */
219 #define SSL_aRSA 0x00000001L /* RSA auth */
220 #define SSL_aDSS 0x00000002L /* DSS auth */
221 #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */
222 #define SSL_aECDSA 0x00000040L /* ECDSA auth*/
223 #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */
225 /* Bits for algorithm_enc (symmetric encryption) */
226 #define SSL_DES 0x00000001L
227 #define SSL_3DES 0x00000002L
228 #define SSL_RC4 0x00000004L
229 #define SSL_IDEA 0x00000008L
230 #define SSL_eNULL 0x00000010L
231 #define SSL_AES128 0x00000020L
232 #define SSL_AES256 0x00000040L
233 #define SSL_CAMELLIA128 0x00000080L
234 #define SSL_CAMELLIA256 0x00000100L
235 #define SSL_eGOST2814789CNT 0x00000200L
236 #define SSL_AES128GCM 0x00000400L
237 #define SSL_AES256GCM 0x00000800L
238 #define SSL_CHACHA20POLY1305 0x00001000L
240 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
241 #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
244 /* Bits for algorithm_mac (symmetric authentication) */
246 #define SSL_MD5 0x00000001L
247 #define SSL_SHA1 0x00000002L
248 #define SSL_GOST94 0x00000004L
249 #define SSL_GOST89MAC 0x00000008L
250 #define SSL_SHA256 0x00000010L
251 #define SSL_SHA384 0x00000020L
252 /* Not a real MAC, just an indication it is part of cipher */
253 #define SSL_AEAD 0x00000040L
254 #define SSL_STREEBOG256 0x00000080L
256 /* Bits for algorithm_ssl (protocol version) */
257 #define SSL_SSLV3 0x00000002L
258 #define SSL_TLSV1 SSL_SSLV3 /* for now */
259 #define SSL_TLSV1_2 0x00000004L
262 /* Bits for algorithm2 (handshake digests and other extra flags) */
264 #define SSL_HANDSHAKE_MAC_MASK 0xff0
265 #define SSL_HANDSHAKE_MAC_MD5 0x010
266 #define SSL_HANDSHAKE_MAC_SHA 0x020
267 #define SSL_HANDSHAKE_MAC_GOST94 0x040
268 #define SSL_HANDSHAKE_MAC_SHA256 0x080
269 #define SSL_HANDSHAKE_MAC_SHA384 0x100
270 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200
271 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
273 /* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX
274 * make sure to update this constant too */
275 #define SSL_MAX_DIGEST 7
277 #define SSL3_CK_ID 0x03000000
278 #define SSL3_CK_VALUE_MASK 0x0000ffff
280 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT)
282 #define TLS1_PRF_DGST_SHIFT 10
283 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
284 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
285 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
286 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
287 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
288 #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT)
289 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
291 /* Stream MAC for GOST ciphersuites from cryptopro draft
292 * (currently this also goes into algorithm2) */
293 #define TLS1_STREAM_MAC 0x04
296 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that
297 * indicates that the variable part of the nonce is included as a prefix of
298 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.)
300 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22)
303 * SSL_CIPHER_ALGORITHM2_AEAD is an algorithm2 flag that indicates the cipher
304 * is implemented via an EVP_AEAD.
306 #define SSL_CIPHER_ALGORITHM2_AEAD (1 << 23)
309 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce
310 * for an SSL_CIPHER with the SSL_CIPHER_ALGORITHM2_AEAD flag.
312 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \
313 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2)
316 * Cipher strength information.
318 #define SSL_STRONG_MASK 0x000001fcL
319 #define SSL_STRONG_NONE 0x00000004L
320 #define SSL_LOW 0x00000020L
321 #define SSL_MEDIUM 0x00000040L
322 #define SSL_HIGH 0x00000080L
325 * The keylength (measured in RSA key bits, I guess) for temporary keys.
326 * Cipher argument is so that this can be variable in the future.
328 #define SSL_C_PKEYLENGTH(c) 1024
330 /* Check if an SSL structure is using DTLS. */
331 #define SSL_IS_DTLS(s) \
332 (s->method->internal->version == DTLS1_VERSION)
334 /* See if we need explicit IV. */
335 #define SSL_USE_EXPLICIT_IV(s) \
336 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
338 /* See if we use signature algorithms extension. */
339 #define SSL_USE_SIGALGS(s) \
340 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
342 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */
343 #define SSL_USE_TLS1_2_CIPHERS(s) \
344 (s->method->internal->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
346 #define SSL_PKEY_RSA_ENC 0
347 #define SSL_PKEY_RSA_SIGN 1
348 #define SSL_PKEY_DH_RSA 2
349 #define SSL_PKEY_ECC 3
350 #define SSL_PKEY_GOST01 4
351 #define SSL_PKEY_NUM 5
353 #define SSL_MAX_EMPTY_RECORDS 32
355 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
356 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
357 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
358 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
359 * SSL_aRSA <- RSA_ENC | RSA_SIGN
360 * SSL_aDSS <- DSA_SIGN
364 #define CERT_INVALID 0
365 #define CERT_PUBLIC_KEY 1
366 #define CERT_PRIVATE_KEY 2
369 /* From ECC-TLS draft, used in encoding the curve type in
372 #define EXPLICIT_PRIME_CURVE_TYPE 1
373 #define EXPLICIT_CHAR2_CURVE_TYPE 2
374 #define NAMED_CURVE_TYPE 3
376 typedef struct ssl_method_internal_st
{
379 uint16_t min_version
;
380 uint16_t max_version
;
382 int (*ssl_new
)(SSL
*s
);
383 void (*ssl_clear
)(SSL
*s
);
384 void (*ssl_free
)(SSL
*s
);
386 int (*ssl_accept
)(SSL
*s
);
387 int (*ssl_connect
)(SSL
*s
);
388 int (*ssl_read
)(SSL
*s
, void *buf
, int len
);
389 int (*ssl_peek
)(SSL
*s
, void *buf
, int len
);
390 int (*ssl_write
)(SSL
*s
, const void *buf
, int len
);
391 int (*ssl_shutdown
)(SSL
*s
);
393 int (*ssl_renegotiate
)(SSL
*s
);
394 int (*ssl_renegotiate_check
)(SSL
*s
);
396 long (*ssl_get_message
)(SSL
*s
, int st1
, int stn
, int mt
,
398 int (*ssl_read_bytes
)(SSL
*s
, int type
, unsigned char *buf
,
400 int (*ssl_write_bytes
)(SSL
*s
, int type
, const void *buf_
, int len
);
402 int (*ssl_pending
)(const SSL
*s
);
403 const struct ssl_method_st
*(*get_ssl_method
)(int version
);
405 long (*get_timeout
)(void);
406 int (*ssl_version
)(void);
408 struct ssl3_enc_method
*ssl3_enc
; /* Extra SSLv3/TLS stuff */
409 } SSL_METHOD_INTERNAL
;
411 typedef struct ssl_session_internal_st
{
412 CRYPTO_EX_DATA ex_data
; /* application specific data */
414 /* These are used to make removal of session-ids more
415 * efficient and to implement a maximum cache size. */
416 struct ssl_session_st
*prev
, *next
;
418 /* Used to indicate that session resumption is not allowed.
419 * Applications can also set this bit for a new session via
420 * not_resumable_session_cb to disable session caching and tickets. */
423 /* The cert is the certificate used to establish this connection */
424 struct sess_cert_st
/* SESS_CERT */ *sess_cert
;
426 size_t tlsext_ecpointformatlist_length
;
427 uint8_t *tlsext_ecpointformatlist
; /* peer's list */
428 size_t tlsext_supportedgroups_length
;
429 uint16_t *tlsext_supportedgroups
; /* peer's list */
430 } SSL_SESSION_INTERNAL
;
431 #define SSI(s) (s->session->internal)
433 typedef struct ssl_handshake_st
{
434 /* state contains one of the SSL3_ST_* values. */
437 /* used when SSL_ST_FLUSH_DATA is entered */
440 /* new_cipher is the cipher being negotiated in this handshake. */
441 const SSL_CIPHER
*new_cipher
;
443 /* key_block is the record-layer key block for TLS 1.2 and earlier. */
445 unsigned char *key_block
;
448 typedef struct ssl_ctx_internal_st
{
449 uint16_t min_version
;
450 uint16_t max_version
;
452 unsigned long options
;
455 /* If this callback is not null, it will be called each
456 * time a session id is added to the cache. If this function
457 * returns 1, it means that the callback will do a
458 * SSL_SESSION_free() when it has finished using it. Otherwise,
459 * on 0, it means the callback has finished with it.
460 * If remove_session_cb is not null, it will be called when
461 * a session-id is removed from the cache. After the call,
462 * OpenSSL will SSL_SESSION_free() it. */
463 int (*new_session_cb
)(struct ssl_st
*ssl
, SSL_SESSION
*sess
);
464 void (*remove_session_cb
)(struct ssl_ctx_st
*ctx
, SSL_SESSION
*sess
);
465 SSL_SESSION
*(*get_session_cb
)(struct ssl_st
*ssl
,
466 unsigned char *data
, int len
, int *copy
);
468 /* if defined, these override the X509_verify_cert() calls */
469 int (*app_verify_callback
)(X509_STORE_CTX
*, void *);
470 void *app_verify_arg
;
472 /* get client cert callback */
473 int (*client_cert_cb
)(SSL
*ssl
, X509
**x509
, EVP_PKEY
**pkey
);
475 /* cookie generate callback */
476 int (*app_gen_cookie_cb
)(SSL
*ssl
, unsigned char *cookie
,
477 unsigned int *cookie_len
);
479 /* verify cookie callback */
480 int (*app_verify_cookie_cb
)(SSL
*ssl
, unsigned char *cookie
,
481 unsigned int cookie_len
);
483 void (*info_callback
)(const SSL
*ssl
,int type
,int val
); /* used if SSL's info_callback is NULL */
485 /* callback that allows applications to peek at protocol messages */
486 void (*msg_callback
)(int write_p
, int version
, int content_type
,
487 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
488 void *msg_callback_arg
;
490 int (*default_verify_callback
)(int ok
,X509_STORE_CTX
*ctx
); /* called 'verify_callback' in the SSL */
492 /* Default generate session ID callback. */
493 GEN_SESSION_CB generate_session_id
;
495 /* TLS extensions servername callback */
496 int (*tlsext_servername_callback
)(SSL
*, int *, void *);
497 void *tlsext_servername_arg
;
499 /* Callback to support customisation of ticket key setting */
500 int (*tlsext_ticket_key_cb
)(SSL
*ssl
, unsigned char *name
,
501 unsigned char *iv
, EVP_CIPHER_CTX
*ectx
, HMAC_CTX
*hctx
, int enc
);
503 /* certificate status request info */
504 /* Callback for status request */
505 int (*tlsext_status_cb
)(SSL
*ssl
, void *arg
);
506 void *tlsext_status_arg
;
508 struct lhash_st_SSL_SESSION
*sessions
;
510 /* Most session-ids that will be cached, default is
511 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */
512 unsigned long session_cache_size
;
513 struct ssl_session_st
*session_cache_head
;
514 struct ssl_session_st
*session_cache_tail
;
516 /* This can have one of 2 values, ored together,
517 * SSL_SESS_CACHE_CLIENT,
518 * SSL_SESS_CACHE_SERVER,
519 * Default is SSL_SESSION_CACHE_SERVER, which means only
520 * SSL_accept which cache SSL_SESSIONS. */
521 int session_cache_mode
;
524 int sess_connect
; /* SSL new conn - started */
525 int sess_connect_renegotiate
;/* SSL reneg - requested */
526 int sess_connect_good
; /* SSL new conne/reneg - finished */
527 int sess_accept
; /* SSL new accept - started */
528 int sess_accept_renegotiate
;/* SSL reneg - requested */
529 int sess_accept_good
; /* SSL accept/reneg - finished */
530 int sess_miss
; /* session lookup misses */
531 int sess_timeout
; /* reuse attempt on timeouted session */
532 int sess_cache_full
; /* session removed due to full cache */
533 int sess_hit
; /* session reuse actually done */
534 int sess_cb_hit
; /* session-id that was not
536 * passed back via the callback. This
537 * indicates that the application is
538 * supplying session-id's from other
539 * processes - spooky :-) */
542 CRYPTO_EX_DATA ex_data
;
544 /* same cipher_list but sorted for lookup */
545 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
547 struct cert_st
/* CERT */ *cert
;
549 /* Default values used when no per-SSL value is defined follow */
551 /* what we put in client cert requests */
552 STACK_OF(X509_NAME
) *client_CA
;
560 /* Maximum amount of data to send in one fragment.
561 * actual record size can be more than this due to
562 * padding and MAC overheads.
564 unsigned int max_send_fragment
;
566 #ifndef OPENSSL_NO_ENGINE
567 /* Engine to pass requests for client certs to
569 ENGINE
*client_cert_engine
;
572 /* RFC 4507 session ticket keys */
573 unsigned char tlsext_tick_key_name
[16];
574 unsigned char tlsext_tick_hmac_key
[16];
575 unsigned char tlsext_tick_aes_key
[16];
577 /* SRTP profiles we are willing to do from RFC 5764 */
578 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
585 * Server callback function that allows the server to select the
586 * protocol for the connection.
587 * out: on successful return, this must point to the raw protocol
588 * name (without the length prefix).
589 * outlen: on successful return, this contains the length of out.
590 * in: points to the client's list of supported protocols in
592 * inlen: the length of in.
594 int (*alpn_select_cb
)(SSL
*s
, const unsigned char **out
,
595 unsigned char *outlen
, const unsigned char *in
, unsigned int inlen
,
597 void *alpn_select_cb_arg
;
599 /* Client list of supported protocols in wire format. */
600 unsigned char *alpn_client_proto_list
;
601 unsigned int alpn_client_proto_list_len
;
603 size_t tlsext_ecpointformatlist_length
;
604 uint8_t *tlsext_ecpointformatlist
; /* our list */
605 size_t tlsext_supportedgroups_length
;
606 uint16_t *tlsext_supportedgroups
; /* our list */
609 typedef struct ssl_internal_st
{
610 uint16_t min_version
;
611 uint16_t max_version
;
613 unsigned long options
; /* protocol behaviour */
614 unsigned long mode
; /* API behaviour */
616 /* Client list of supported protocols in wire format. */
617 unsigned char *alpn_client_proto_list
;
618 unsigned int alpn_client_proto_list_len
;
622 /* true when we are actually in SSL_accept() or SSL_connect() */
624 int (*handshake_func
)(SSL
*);
625 /* callback that allows applications to peek at protocol messages */
626 void (*msg_callback
)(int write_p
, int version
, int content_type
,
627 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
628 void *msg_callback_arg
;
630 /* Default generate session ID callback. */
631 GEN_SESSION_CB generate_session_id
;
633 int (*verify_callback
)(int ok
,X509_STORE_CTX
*ctx
); /* fail if callback returns 0 */
635 void (*info_callback
)(const SSL
*ssl
,int type
,int val
); /* optional informational callback */
637 /* TLS extension debug callback */
638 void (*tlsext_debug_cb
)(SSL
*s
, int client_server
, int type
,
639 unsigned char *data
, int len
, void *arg
);
640 void *tlsext_debug_arg
;
642 /* TLS Session Ticket extension callback */
643 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb
;
644 void *tls_session_ticket_ext_cb_arg
;
646 /* TLS pre-shared secret session resumption */
647 tls_session_secret_cb_fn tls_session_secret_cb
;
648 void *tls_session_secret_cb_arg
;
650 /* XXX non-callback */
652 int type
; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */
654 /* This holds a variable that indicates what we were doing
655 * when a 0 or -1 is returned. This is needed for
656 * non-blocking IO so we know what request needs re-doing when
657 * in SSL_accept or SSL_connect */
660 /* Imagine that here's a boolean member "init" that is
661 * switched as soon as SSL_set_{accept/connect}_state
662 * is called for the first time, so that "state" and
663 * "handshake_func" are properly initialized. But as
664 * handshake_func is == 0 until then, we use this
665 * test instead of an "init" member.
668 int new_session
;/* Generate a new session or reuse an old one.
669 * NB: For servers, the 'new' session may actually be a previously
670 * cached session or even the previous session unless
671 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */
672 int quiet_shutdown
;/* don't send shutdown packets */
673 int shutdown
; /* we have shut things down, 0x01 sent, 0x02
675 BUF_MEM
*init_buf
; /* buffer used during init */
676 void *init_msg
; /* pointer to handshake message body, set by ssl3_get_message() */
677 int init_num
; /* amount read/written */
678 int init_off
; /* amount read/written */
680 /* used internally to point at a raw packet */
681 unsigned char *packet
;
682 unsigned int packet_length
;
684 int read_ahead
; /* Read as many input bytes as possible
685 * (for non-blocking reads) */
687 int hit
; /* reusing a previous session */
690 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
692 /* These are the ones being used, the ones in SSL_SESSION are
693 * the ones to be 'copied' into these ones */
696 SSL_AEAD_CTX
*aead_read_ctx
; /* AEAD context. If non-NULL, then
697 enc_read_ctx and read_hash are
700 SSL_AEAD_CTX
*aead_write_ctx
; /* AEAD context. If non-NULL, then
701 enc_write_ctx and write_hash are
704 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
705 EVP_MD_CTX
*write_hash
; /* used for mac generation */
709 /* extra application data */
710 CRYPTO_EX_DATA ex_data
;
713 /* for server side, keep the list of CA_dn we can use */
714 STACK_OF(X509_NAME
) *client_CA
;
716 /* set this flag to 1 and a sleep(1) is put into all SSL_read()
717 * and SSL_write() calls, good for nbio debuging :-) */
722 int servername_done
; /* no further mod of servername
723 0 : call the servername extension callback.
724 1 : prepare 2, allow last ack just after in server callback.
725 2 : don't call servername callback, no ack in server hello
728 /* Expect OCSP CertificateStatus message */
729 int tlsext_status_expected
;
730 /* OCSP status request only */
731 STACK_OF(OCSP_RESPID
) *tlsext_ocsp_ids
;
732 X509_EXTENSIONS
*tlsext_ocsp_exts
;
733 /* OCSP response received or to be sent */
734 unsigned char *tlsext_ocsp_resp
;
735 int tlsext_ocsp_resplen
;
737 /* RFC4507 session ticket expected to be received or sent */
738 int tlsext_ticket_expected
;
740 size_t tlsext_ecpointformatlist_length
;
741 uint8_t *tlsext_ecpointformatlist
; /* our list */
742 size_t tlsext_supportedgroups_length
;
743 uint16_t *tlsext_supportedgroups
; /* our list */
745 /* TLS Session Ticket extension override */
746 TLS_SESSION_TICKET_EXT
*tlsext_session_ticket
;
748 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
; /* What we'll do */
749 SRTP_PROTECTION_PROFILE
*srtp_profile
; /* What's been chosen */
751 int renegotiate
;/* 1 if we are renegotiating.
752 * 2 if we are a server and are inside a handshake
753 * (i.e. not just sending a HelloRequest) */
755 int rstate
; /* where we are when reading */
759 int empty_record_count
;
762 typedef struct ssl3_state_internal_st
{
763 int delay_buf_pop_ret
;
765 unsigned char read_sequence
[SSL3_SEQUENCE_SIZE
];
766 int read_mac_secret_size
;
767 unsigned char read_mac_secret
[EVP_MAX_MD_SIZE
];
768 unsigned char write_sequence
[SSL3_SEQUENCE_SIZE
];
769 int write_mac_secret_size
;
770 unsigned char write_mac_secret
[EVP_MAX_MD_SIZE
];
772 /* flags for countermeasure against known-IV weakness */
773 int need_empty_fragments
;
774 int empty_fragment_done
;
776 SSL3_RECORD rrec
; /* each decoded record goes in here */
777 SSL3_RECORD wrec
; /* goes out from here */
779 /* storage for Alert/Handshake protocol data received but not
780 * yet processed by ssl3_read_bytes: */
781 unsigned char alert_fragment
[2];
782 unsigned int alert_fragment_len
;
783 unsigned char handshake_fragment
[4];
784 unsigned int handshake_fragment_len
;
786 /* partial write - check the numbers match */
787 unsigned int wnum
; /* number of bytes sent so far */
788 int wpend_tot
; /* number bytes written */
790 int wpend_ret
; /* number of bytes submitted */
791 const unsigned char *wpend_buf
;
793 /* used during startup, digest all incoming/outgoing packets */
794 BIO
*handshake_buffer
;
796 /* Rolling hash of handshake messages. */
797 EVP_MD_CTX
*handshake_hash
;
799 /* this is set whenerver we see a change_cipher_spec message
800 * come in when we are not looking for one */
801 int change_cipher_spec
;
806 /* This flag is set when we should renegotiate ASAP, basically when
807 * there is no more data in the read or write buffers */
809 int total_renegotiations
;
810 int num_renegotiations
;
812 int in_read_app_data
;
817 /* actually only needs to be 16+20 */
818 unsigned char cert_verify_md
[EVP_MAX_MD_SIZE
*2];
820 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
821 unsigned char finish_md
[EVP_MAX_MD_SIZE
*2];
823 unsigned char peer_finish_md
[EVP_MAX_MD_SIZE
*2];
824 int peer_finish_md_len
;
826 unsigned long message_size
;
831 EC_KEY
*ecdh
; /* holds short lived ECDH key */
837 /* used for certificate requests */
840 char ctype
[SSL3_CT_NUMBER
];
841 STACK_OF(X509_NAME
) *ca_names
;
843 const EVP_CIPHER
*new_sym_enc
;
844 const EVP_AEAD
*new_aead
;
845 const EVP_MD
*new_hash
;
846 int new_mac_pkey_type
;
850 /* Connection binding to prevent renegotiation attacks */
851 unsigned char previous_client_finished
[EVP_MAX_MD_SIZE
];
852 unsigned char previous_client_finished_len
;
853 unsigned char previous_server_finished
[EVP_MAX_MD_SIZE
];
854 unsigned char previous_server_finished_len
;
855 int send_connection_binding
; /* TODOEKR */
857 /* Set if we saw a Renegotiation Indication extension from our peer. */
858 int renegotiate_seen
;
863 * In a server these point to the selected ALPN protocol after the
864 * ClientHello has been processed. In a client these contain the
865 * protocol that the server selected once the ServerHello has been
868 unsigned char *alpn_selected
;
869 size_t alpn_selected_len
;
870 } SSL3_STATE_INTERNAL
;
871 #define S3I(s) (s->s3->internal)
873 typedef struct dtls1_state_internal_st
{
874 unsigned int send_cookie
;
875 unsigned char cookie
[DTLS1_COOKIE_LENGTH
];
876 unsigned char rcvd_cookie
[DTLS1_COOKIE_LENGTH
];
877 unsigned int cookie_len
;
880 * The current data and handshake epoch. This is initially
881 * undefined, and starts at zero once the initial handshake is
884 unsigned short r_epoch
;
885 unsigned short w_epoch
;
887 /* records being received in the current epoch */
890 /* renegotiation starts a new set of sequence numbers */
891 DTLS1_BITMAP next_bitmap
;
893 /* handshake message numbers */
894 unsigned short handshake_write_seq
;
895 unsigned short next_handshake_write_seq
;
897 unsigned short handshake_read_seq
;
899 /* save last sequence number for retransmissions */
900 unsigned char last_write_sequence
[8];
902 /* Received handshake records (processed and unprocessed) */
903 record_pqueue unprocessed_rcds
;
904 record_pqueue processed_rcds
;
906 /* Buffered handshake messages */
907 struct _pqueue
*buffered_messages
;
909 /* Buffered application records.
910 * Only for records between CCS and Finished
911 * to prevent either protocol violation or
912 * unnecessary message loss.
914 record_pqueue buffered_app_data
;
916 /* Is set when listening for new connections with dtls1_listen() */
919 unsigned int mtu
; /* max DTLS packet size */
921 struct hm_header_st w_msg_hdr
;
922 struct hm_header_st r_msg_hdr
;
924 struct dtls1_timeout_st timeout
;
926 /* storage for Alert/Handshake protocol data received but not
927 * yet processed by ssl3_read_bytes: */
928 unsigned char alert_fragment
[DTLS1_AL_HEADER_LENGTH
];
929 unsigned int alert_fragment_len
;
930 unsigned char handshake_fragment
[DTLS1_HM_HEADER_LENGTH
];
931 unsigned int handshake_fragment_len
;
933 unsigned int retransmitting
;
934 unsigned int change_cipher_spec_ok
;
935 } DTLS1_STATE_INTERNAL
;
936 #define D1I(s) (s->d1->internal)
938 typedef struct cert_pkey_st
{
940 EVP_PKEY
*privatekey
;
941 /* Digest to use when signing */
942 const EVP_MD
*digest
;
945 typedef struct cert_st
{
946 /* Current active set */
947 CERT_PKEY
*key
; /* ALWAYS points to an element of the pkeys array
948 * Probably it would make more sense to store
949 * an index, not a pointer. */
951 /* The following masks are for the key and auth
952 * algorithms that are supported by the certs below */
954 unsigned long mask_k
;
955 unsigned long mask_a
;
958 DH
*(*dh_tmp_cb
)(SSL
*ssl
, int is_export
, int keysize
);
963 CERT_PKEY pkeys
[SSL_PKEY_NUM
];
965 int references
; /* >1 only if SSL_copy_session_id is used */
969 typedef struct sess_cert_st
{
970 STACK_OF(X509
) *cert_chain
; /* as received from peer */
972 /* The 'peer_...' members are used only by clients. */
975 CERT_PKEY
*peer_key
; /* points to an element of peer_pkeys (never NULL!) */
976 CERT_PKEY peer_pkeys
[SSL_PKEY_NUM
];
977 /* Obviously we don't have the private keys of these,
978 * so maybe we shouldn't even use the CERT_PKEY type here. */
981 EC_KEY
*peer_ecdh_tmp
;
982 uint8_t *peer_x25519_tmp
;
984 int references
; /* actually always 1 at the moment */
987 /*#define SSL_DEBUG */
988 /*#define RSA_DEBUG */
990 typedef struct ssl3_enc_method
{
991 int (*enc
)(SSL
*, int);
992 unsigned int enc_flags
;
996 * Flag values for enc_flags.
999 /* Uses explicit IV. */
1000 #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0)
1002 /* Uses signature algorithms extension. */
1003 #define SSL_ENC_FLAG_SIGALGS (1 << 1)
1005 /* Uses SHA256 default PRF. */
1006 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2)
1008 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */
1009 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4)
1012 * ssl_aead_ctx_st contains information about an AEAD that is being used to
1013 * encrypt an SSL connection.
1015 struct ssl_aead_ctx_st
{
1018 * fixed_nonce contains any bytes of the nonce that are fixed for all
1021 unsigned char fixed_nonce
[12];
1022 unsigned char fixed_nonce_len
;
1023 unsigned char variable_nonce_len
;
1024 unsigned char xor_fixed_nonce
;
1025 unsigned char tag_len
;
1027 * variable_nonce_in_record is non-zero if the variable nonce
1028 * for a record is included as a prefix before the ciphertext.
1030 char variable_nonce_in_record
;
1033 extern SSL_CIPHER ssl3_ciphers
[];
1035 const char *ssl_version_string(int ver
);
1036 int ssl_enabled_version_range(SSL
*s
, uint16_t *min_ver
, uint16_t *max_ver
);
1037 int ssl_supported_version_range(SSL
*s
, uint16_t *min_ver
, uint16_t *max_ver
);
1038 int ssl_max_shared_version(SSL
*s
, uint16_t peer_ver
, uint16_t *max_ver
);
1039 int ssl_version_set_min(const SSL_METHOD
*meth
, uint16_t ver
, uint16_t max_ver
,
1041 int ssl_version_set_max(const SSL_METHOD
*meth
, uint16_t ver
, uint16_t min_ver
,
1043 uint16_t ssl_max_server_version(SSL
*s
);
1045 const SSL_METHOD
*dtls1_get_client_method(int ver
);
1046 const SSL_METHOD
*dtls1_get_server_method(int ver
);
1047 const SSL_METHOD
*tls1_get_client_method(int ver
);
1048 const SSL_METHOD
*tls1_get_server_method(int ver
);
1050 extern SSL3_ENC_METHOD DTLSv1_enc_data
;
1051 extern SSL3_ENC_METHOD TLSv1_enc_data
;
1052 extern SSL3_ENC_METHOD TLSv1_1_enc_data
;
1053 extern SSL3_ENC_METHOD TLSv1_2_enc_data
;
1055 void ssl_clear_cipher_ctx(SSL
*s
);
1056 int ssl_clear_bad_session(SSL
*s
);
1057 CERT
*ssl_cert_new(void);
1058 CERT
*ssl_cert_dup(CERT
*cert
);
1059 int ssl_cert_inst(CERT
**o
);
1060 void ssl_cert_free(CERT
*c
);
1061 SESS_CERT
*ssl_sess_cert_new(void);
1062 void ssl_sess_cert_free(SESS_CERT
*sc
);
1063 int ssl_get_new_session(SSL
*s
, int session
);
1064 int ssl_get_prev_session(SSL
*s
, unsigned char *session
, int len
,
1065 const unsigned char *limit
);
1066 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
);
1067 SSL_CIPHER
*OBJ_bsearch_ssl_cipher_id(SSL_CIPHER
*key
, SSL_CIPHER
const *base
, int num
);
1068 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
* const *ap
,
1069 const SSL_CIPHER
* const *bp
);
1070 int ssl_cipher_list_to_bytes(SSL
*s
, STACK_OF(SSL_CIPHER
) *ciphers
, CBB
*cbb
);
1071 STACK_OF(SSL_CIPHER
) *ssl_bytes_to_cipher_list(SSL
*s
, CBS
*cbs
);
1072 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*meth
,
1073 STACK_OF(SSL_CIPHER
) **pref
, STACK_OF(SSL_CIPHER
) **sorted
,
1074 const char *rule_str
);
1075 void ssl_update_cache(SSL
*s
, int mode
);
1076 int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
1077 const EVP_MD
**md
, int *mac_pkey_type
, int *mac_secret_size
);
1078 int ssl_cipher_get_evp_aead(const SSL_SESSION
*s
, const EVP_AEAD
**aead
);
1079 int ssl_get_handshake_evp_md(SSL
*s
, const EVP_MD
**md
);
1081 int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
);
1082 int ssl_undefined_function(SSL
*s
);
1083 int ssl_undefined_void_function(void);
1084 int ssl_undefined_const_function(const SSL
*s
);
1085 CERT_PKEY
*ssl_get_server_send_pkey(const SSL
*s
);
1086 X509
*ssl_get_server_send_cert(const SSL
*);
1087 EVP_PKEY
*ssl_get_sign_pkey(SSL
*s
, const SSL_CIPHER
*c
, const EVP_MD
**pmd
);
1088 DH
*ssl_get_auto_dh(SSL
*s
);
1089 int ssl_cert_type(X509
*x
, EVP_PKEY
*pkey
);
1090 void ssl_set_cert_masks(CERT
*c
, const SSL_CIPHER
*cipher
);
1091 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
);
1092 int ssl_has_ecc_ciphers(SSL
*s
);
1093 int ssl_verify_alarm_type(long type
);
1094 void ssl_load_ciphers(void);
1096 const SSL_CIPHER
*ssl3_get_cipher_by_char(const unsigned char *p
);
1097 int ssl3_put_cipher_by_char(const SSL_CIPHER
*c
, unsigned char *p
);
1098 int ssl3_send_server_certificate(SSL
*s
);
1099 int ssl3_send_newsession_ticket(SSL
*s
);
1100 int ssl3_send_cert_status(SSL
*s
);
1101 int ssl3_get_finished(SSL
*s
, int state_a
, int state_b
);
1102 int ssl3_send_change_cipher_spec(SSL
*s
, int state_a
, int state_b
);
1103 int ssl3_do_write(SSL
*s
, int type
);
1104 int ssl3_send_alert(SSL
*s
, int level
, int desc
);
1105 int ssl3_get_req_cert_types(SSL
*s
, CBB
*cbb
);
1106 long ssl3_get_message(SSL
*s
, int st1
, int stn
, int mt
, long max
, int *ok
);
1107 int ssl3_send_finished(SSL
*s
, int a
, int b
, const char *sender
, int slen
);
1108 int ssl3_num_ciphers(void);
1109 const SSL_CIPHER
*ssl3_get_cipher(unsigned int u
);
1110 const SSL_CIPHER
*ssl3_get_cipher_by_id(unsigned int id
);
1111 const SSL_CIPHER
*ssl3_get_cipher_by_value(uint16_t value
);
1112 uint16_t ssl3_cipher_get_value(const SSL_CIPHER
*c
);
1113 int ssl3_renegotiate(SSL
*ssl
);
1115 int ssl3_renegotiate_check(SSL
*ssl
);
1117 int ssl3_dispatch_alert(SSL
*s
);
1118 int ssl3_read_bytes(SSL
*s
, int type
, unsigned char *buf
, int len
, int peek
);
1119 int ssl3_write_bytes(SSL
*s
, int type
, const void *buf
, int len
);
1120 int ssl3_output_cert_chain(SSL
*s
, CBB
*cbb
, X509
*x
);
1121 SSL_CIPHER
*ssl3_choose_cipher(SSL
*ssl
, STACK_OF(SSL_CIPHER
) *clnt
,
1122 STACK_OF(SSL_CIPHER
) *srvr
);
1123 int ssl3_setup_buffers(SSL
*s
);
1124 int ssl3_setup_init_buffer(SSL
*s
);
1125 int ssl3_setup_read_buffer(SSL
*s
);
1126 int ssl3_setup_write_buffer(SSL
*s
);
1127 int ssl3_release_read_buffer(SSL
*s
);
1128 int ssl3_release_write_buffer(SSL
*s
);
1129 int ssl3_new(SSL
*s
);
1130 void ssl3_free(SSL
*s
);
1131 int ssl3_accept(SSL
*s
);
1132 int ssl3_connect(SSL
*s
);
1133 int ssl3_read(SSL
*s
, void *buf
, int len
);
1134 int ssl3_peek(SSL
*s
, void *buf
, int len
);
1135 int ssl3_write(SSL
*s
, const void *buf
, int len
);
1136 int ssl3_shutdown(SSL
*s
);
1137 void ssl3_clear(SSL
*s
);
1138 long ssl3_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
1139 long ssl3_ctx_ctrl(SSL_CTX
*s
, int cmd
, long larg
, void *parg
);
1140 long ssl3_callback_ctrl(SSL
*s
, int cmd
, void (*fp
)(void));
1141 long ssl3_ctx_callback_ctrl(SSL_CTX
*s
, int cmd
, void (*fp
)(void));
1142 int ssl3_pending(const SSL
*s
);
1144 int ssl3_handshake_msg_hdr_len(SSL
*s
);
1145 unsigned char *ssl3_handshake_msg_start(SSL
*s
, uint8_t htype
);
1146 void ssl3_handshake_msg_finish(SSL
*s
, unsigned int len
);
1147 int ssl3_handshake_msg_start_cbb(SSL
*s
, CBB
*handshake
, CBB
*body
,
1149 int ssl3_handshake_msg_finish_cbb(SSL
*s
, CBB
*handshake
);
1150 int ssl3_handshake_write(SSL
*s
);
1151 int ssl3_record_write(SSL
*s
, int type
);
1153 void tls1_record_sequence_increment(unsigned char *seq
);
1154 int ssl3_do_change_cipher_spec(SSL
*ssl
);
1156 long tls1_default_timeout(void);
1157 int dtls1_do_write(SSL
*s
, int type
);
1158 int ssl3_packet_read(SSL
*s
, int plen
);
1159 int ssl3_packet_extend(SSL
*s
, int plen
);
1160 int ssl_server_legacy_first_packet(SSL
*s
);
1161 int dtls1_read_bytes(SSL
*s
, int type
, unsigned char *buf
, int len
, int peek
);
1162 int ssl3_write_pending(SSL
*s
, int type
, const unsigned char *buf
,
1164 void dtls1_set_message_header(SSL
*s
, unsigned char mt
, unsigned long len
,
1165 unsigned long frag_off
, unsigned long frag_len
);
1166 void dtls1_set_message_header_int(SSL
*s
, unsigned char mt
,
1167 unsigned long len
, unsigned short seq_num
, unsigned long frag_off
,
1168 unsigned long frag_len
);
1170 int dtls1_write_app_data_bytes(SSL
*s
, int type
, const void *buf
, int len
);
1171 int dtls1_write_bytes(SSL
*s
, int type
, const void *buf
, int len
);
1173 int dtls1_read_failed(SSL
*s
, int code
);
1174 int dtls1_buffer_message(SSL
*s
, int ccs
);
1175 int dtls1_retransmit_message(SSL
*s
, unsigned short seq
,
1176 unsigned long frag_off
, int *found
);
1177 int dtls1_get_queue_priority(unsigned short seq
, int is_ccs
);
1178 int dtls1_retransmit_buffered_messages(SSL
*s
);
1179 void dtls1_clear_record_buffer(SSL
*s
);
1180 int dtls1_get_message_header(unsigned char *data
,
1181 struct hm_header_st
*msg_hdr
);
1182 void dtls1_get_ccs_header(unsigned char *data
, struct ccs_header_st
*ccs_hdr
);
1183 void dtls1_reset_seq_numbers(SSL
*s
, int rw
);
1184 void dtls1_build_sequence_number(unsigned char *dst
, unsigned char *seq
,
1185 unsigned short epoch
);
1186 long dtls1_default_timeout(void);
1187 struct timeval
* dtls1_get_timeout(SSL
*s
, struct timeval
* timeleft
);
1188 int dtls1_check_timeout_num(SSL
*s
);
1189 int dtls1_handle_timeout(SSL
*s
);
1190 const SSL_CIPHER
*dtls1_get_cipher(unsigned int u
);
1191 void dtls1_start_timer(SSL
*s
);
1192 void dtls1_stop_timer(SSL
*s
);
1193 int dtls1_is_timer_expired(SSL
*s
);
1194 void dtls1_double_timeout(SSL
*s
);
1195 unsigned int dtls1_min_mtu(void);
1197 /* some client-only functions */
1198 int dtls1_get_hello_verify(SSL
*s
);
1199 int ssl3_send_client_hello(SSL
*s
);
1200 int ssl3_get_server_hello(SSL
*s
);
1201 int ssl3_get_certificate_request(SSL
*s
);
1202 int ssl3_get_new_session_ticket(SSL
*s
);
1203 int ssl3_get_cert_status(SSL
*s
);
1204 int ssl3_get_server_done(SSL
*s
);
1205 int ssl3_send_client_verify(SSL
*s
);
1206 int ssl3_send_client_certificate(SSL
*s
);
1207 int ssl_do_client_cert_cb(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
);
1208 int ssl3_send_client_key_exchange(SSL
*s
);
1209 int ssl3_get_server_key_exchange(SSL
*s
);
1210 int ssl3_get_server_certificate(SSL
*s
);
1211 int ssl3_check_cert_and_algorithm(SSL
*s
);
1212 int ssl3_check_finished(SSL
*s
);
1214 /* some server-only functions */
1215 int dtls1_send_hello_verify_request(SSL
*s
);
1216 int ssl3_get_client_hello(SSL
*s
);
1217 int ssl3_send_server_hello(SSL
*s
);
1218 int ssl3_send_hello_request(SSL
*s
);
1219 int ssl3_send_server_key_exchange(SSL
*s
);
1220 int ssl3_send_certificate_request(SSL
*s
);
1221 int ssl3_send_server_done(SSL
*s
);
1222 int ssl3_get_client_certificate(SSL
*s
);
1223 int ssl3_get_client_key_exchange(SSL
*s
);
1224 int ssl3_get_cert_verify(SSL
*s
);
1226 int tls1_new(SSL
*s
);
1227 void tls1_free(SSL
*s
);
1228 void tls1_clear(SSL
*s
);
1230 int dtls1_new(SSL
*s
);
1231 void dtls1_free(SSL
*s
);
1232 void dtls1_clear(SSL
*s
);
1233 long dtls1_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
1234 int dtls1_shutdown(SSL
*s
);
1236 long dtls1_get_message(SSL
*s
, int st1
, int stn
, int mt
, long max
, int *ok
);
1237 int dtls1_get_record(SSL
*s
);
1238 int dtls1_dispatch_alert(SSL
*s
);
1239 int dtls1_enc(SSL
*s
, int snd
);
1241 int ssl_init_wbio_buffer(SSL
*s
, int push
);
1242 void ssl_free_wbio_buffer(SSL
*s
);
1244 int tls1_handshake_hash_init(SSL
*s
);
1245 int tls1_handshake_hash_update(SSL
*s
, const unsigned char *buf
, size_t len
);
1246 int tls1_handshake_hash_value(SSL
*s
, const unsigned char *out
, size_t len
,
1248 void tls1_handshake_hash_free(SSL
*s
);
1250 int tls1_init_finished_mac(SSL
*s
);
1251 int tls1_finish_mac(SSL
*s
, const unsigned char *buf
, int len
);
1252 void tls1_free_digest_list(SSL
*s
);
1253 void tls1_cleanup_key_block(SSL
*s
);
1254 int tls1_digest_cached_records(SSL
*s
);
1255 int tls1_change_cipher_state(SSL
*s
, int which
);
1256 int tls1_setup_key_block(SSL
*s
);
1257 int tls1_enc(SSL
*s
, int snd
);
1258 int tls1_final_finish_mac(SSL
*s
, const char *str
, int slen
, unsigned char *p
);
1259 int tls1_mac(SSL
*ssl
, unsigned char *md
, int snd
);
1260 int tls1_generate_master_secret(SSL
*s
, unsigned char *out
,
1261 unsigned char *p
, int len
);
1262 int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
1263 const char *label
, size_t llen
, const unsigned char *p
, size_t plen
,
1265 int tls1_alert_code(int code
);
1268 int ssl_using_ecc_cipher(SSL
*s
);
1269 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
);
1271 int tls1_set_groups(uint16_t **out_group_ids
, size_t *out_group_ids_len
,
1272 const int *groups
, size_t ngroups
);
1273 int tls1_set_groups_list(uint16_t **out_group_ids
, size_t *out_group_ids_len
,
1274 const char *groups
);
1276 int tls1_ec_curve_id2nid(const uint16_t curve_id
);
1277 uint16_t tls1_ec_nid2curve_id(const int nid
);
1278 int tls1_check_curve(SSL
*s
, const uint16_t curve_id
);
1279 int tls1_get_shared_curve(SSL
*s
);
1281 int ssl_parse_serverhello_tlsext(SSL
*s
, unsigned char **data
,
1283 int ssl_check_clienthello_tlsext_early(SSL
*s
);
1284 int ssl_check_clienthello_tlsext_late(SSL
*s
);
1285 int ssl_check_serverhello_tlsext(SSL
*s
);
1287 #define tlsext_tick_md EVP_sha256
1288 int tls1_process_ticket(SSL
*s
, const unsigned char *session_id
, int len
,
1289 const unsigned char *limit
, SSL_SESSION
**ret
);
1290 int tls12_get_sigandhash(unsigned char *p
, const EVP_PKEY
*pk
,
1292 int tls12_get_sigid(const EVP_PKEY
*pk
);
1293 const EVP_MD
*tls12_get_hash(unsigned char hash_alg
);
1295 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
);
1296 long ssl_get_algorithm2(SSL
*s
);
1297 int tls1_process_sigalgs(SSL
*s
, CBS
*cbs
);
1298 void tls12_get_req_sig_algs(SSL
*s
, unsigned char **sigalgs
,
1299 size_t *sigalgs_len
);
1301 int tls1_check_ec_server_key(SSL
*s
);
1302 int tls1_check_ec_tmp_key(SSL
*s
);
1304 int ssl_add_clienthello_use_srtp_ext(SSL
*s
, unsigned char *p
,
1305 int *len
, int maxlen
);
1306 int ssl_parse_clienthello_use_srtp_ext(SSL
*s
, const unsigned char *d
,
1308 int ssl_add_serverhello_use_srtp_ext(SSL
*s
, unsigned char *p
,
1309 int *len
, int maxlen
);
1310 int ssl_parse_serverhello_use_srtp_ext(SSL
*s
, const unsigned char *d
,
1314 void ssl3_cbc_copy_mac(unsigned char *out
, const SSL3_RECORD
*rec
,
1315 unsigned md_size
, unsigned orig_len
);
1316 int tls1_cbc_remove_padding(const SSL
*s
, SSL3_RECORD
*rec
,
1317 unsigned block_size
, unsigned mac_size
);
1318 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX
*ctx
);
1319 int ssl3_cbc_digest_record(const EVP_MD_CTX
*ctx
, unsigned char *md_out
,
1320 size_t *md_out_size
, const unsigned char header
[13],
1321 const unsigned char *data
, size_t data_plus_mac_size
,
1322 size_t data_plus_mac_plus_padding_size
, const unsigned char *mac_secret
,
1323 unsigned mac_secret_length
);
1324 int SSL_state_func_code(int _state
);
1326 #define SSLerror(s, r) SSL_error_internal(s, r, __FILE__, __LINE__)
1327 #define SSLerrorx(r) ERR_PUT_error(ERR_LIB_SSL,(0xfff),(r),__FILE__,__LINE__)
1328 void SSL_error_internal(const SSL
*s
, int r
, char *f
, int l
);
1330 void tls1_get_formatlist(SSL
*s
, int client_formats
, const uint8_t **pformats
,
1331 size_t *pformatslen
);
1332 void tls1_get_curvelist(SSL
*s
, int client_curves
, const uint16_t **pcurves
,
1333 size_t *pcurveslen
);
1335 #ifndef OPENSSL_NO_SRTP
1337 int srtp_find_profile_by_name(char *profile_name
,
1338 SRTP_PROTECTION_PROFILE
**pptr
, unsigned len
);
1339 int srtp_find_profile_by_num(unsigned profile_num
,
1340 SRTP_PROTECTION_PROFILE
**pptr
);
1342 #endif /* OPENSSL_NO_SRTP */