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) 1998-2002 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.
120 #include "ssl_locl.h"
121 #include <openssl/buffer.h>
122 #include <openssl/rand.h>
123 #include <openssl/objects.h>
124 #include <openssl/evp.h>
125 #include <openssl/x509.h>
128 * send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or
129 * SSL3_RT_CHANGE_CIPHER_SPEC)
131 int ssl3_do_write(SSL
*s
, int type
)
135 ret
= ssl3_write_bytes(s
, type
, &s
->init_buf
->data
[s
->init_off
],
139 if (type
== SSL3_RT_HANDSHAKE
)
141 * should not be done for 'Hello Request's, but in that case we'll
142 * ignore the result anyway
144 ssl3_finish_mac(s
, (unsigned char *)&s
->init_buf
->data
[s
->init_off
],
147 if (ret
== s
->init_num
) {
149 s
->msg_callback(1, s
->version
, type
, s
->init_buf
->data
,
150 (size_t)(s
->init_off
+ s
->init_num
), s
,
151 s
->msg_callback_arg
);
159 int ssl3_send_finished(SSL
*s
, int a
, int b
, const char *sender
, int slen
)
161 unsigned char *p
, *d
;
166 d
= (unsigned char *)s
->init_buf
->data
;
169 i
= s
->method
->ssl3_enc
->final_finish_mac(s
,
171 s
->s3
->tmp
.finish_md
);
174 s
->s3
->tmp
.finish_md_len
= i
;
175 memcpy(p
, s
->s3
->tmp
.finish_md
, i
);
180 * Copy the finished so we can use it for renegotiation checks
182 if (s
->type
== SSL_ST_CONNECT
) {
183 OPENSSL_assert(i
<= EVP_MAX_MD_SIZE
);
184 memcpy(s
->s3
->previous_client_finished
, s
->s3
->tmp
.finish_md
, i
);
185 s
->s3
->previous_client_finished_len
= i
;
187 OPENSSL_assert(i
<= EVP_MAX_MD_SIZE
);
188 memcpy(s
->s3
->previous_server_finished
, s
->s3
->tmp
.finish_md
, i
);
189 s
->s3
->previous_server_finished_len
= i
;
192 #ifdef OPENSSL_SYS_WIN16
194 * MSVC 1.5 does not clear the top bytes of the word unless I do
200 *(d
++) = SSL3_MT_FINISHED
;
202 s
->init_num
= (int)l
+ 4;
208 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
209 return (ssl3_do_write(s
, SSL3_RT_HANDSHAKE
));
212 #ifndef OPENSSL_NO_NEXTPROTONEG
214 * ssl3_take_mac calculates the Finished MAC for the handshakes messages seen
217 static void ssl3_take_mac(SSL
*s
)
222 * If no new cipher setup return immediately: other functions will set
223 * the appropriate error.
225 if (s
->s3
->tmp
.new_cipher
== NULL
)
227 if (s
->state
& SSL_ST_CONNECT
) {
228 sender
= s
->method
->ssl3_enc
->server_finished_label
;
229 slen
= s
->method
->ssl3_enc
->server_finished_label_len
;
231 sender
= s
->method
->ssl3_enc
->client_finished_label
;
232 slen
= s
->method
->ssl3_enc
->client_finished_label_len
;
235 s
->s3
->tmp
.peer_finish_md_len
= s
->method
->ssl3_enc
->final_finish_mac(s
,
238 s
->s3
->tmp
.peer_finish_md
);
242 int ssl3_get_finished(SSL
*s
, int a
, int b
)
248 #ifdef OPENSSL_NO_NEXTPROTONEG
250 * the mac has already been generated when we received the change cipher
251 * spec message and is in s->s3->tmp.peer_finish_md.
255 /* 64 argument should actually be 36+4 :-) */
256 n
= s
->method
->ssl_get_message(s
, a
, b
, SSL3_MT_FINISHED
, 64, &ok
);
261 /* If this occurs, we have missed a message */
262 if (!s
->s3
->change_cipher_spec
) {
263 al
= SSL_AD_UNEXPECTED_MESSAGE
;
264 SSLerr(SSL_F_SSL3_GET_FINISHED
, SSL_R_GOT_A_FIN_BEFORE_A_CCS
);
267 s
->s3
->change_cipher_spec
= 0;
269 p
= (unsigned char *)s
->init_msg
;
270 i
= s
->s3
->tmp
.peer_finish_md_len
;
273 al
= SSL_AD_DECODE_ERROR
;
274 SSLerr(SSL_F_SSL3_GET_FINISHED
, SSL_R_BAD_DIGEST_LENGTH
);
278 if (CRYPTO_memcmp(p
, s
->s3
->tmp
.peer_finish_md
, i
) != 0) {
279 al
= SSL_AD_DECRYPT_ERROR
;
280 SSLerr(SSL_F_SSL3_GET_FINISHED
, SSL_R_DIGEST_CHECK_FAILED
);
285 * Copy the finished so we can use it for renegotiation checks
287 if (s
->type
== SSL_ST_ACCEPT
) {
288 OPENSSL_assert(i
<= EVP_MAX_MD_SIZE
);
289 memcpy(s
->s3
->previous_client_finished
, s
->s3
->tmp
.peer_finish_md
, i
);
290 s
->s3
->previous_client_finished_len
= i
;
292 OPENSSL_assert(i
<= EVP_MAX_MD_SIZE
);
293 memcpy(s
->s3
->previous_server_finished
, s
->s3
->tmp
.peer_finish_md
, i
);
294 s
->s3
->previous_server_finished_len
= i
;
299 ssl3_send_alert(s
, SSL3_AL_FATAL
, al
);
304 * for these 2 messages, we need to
305 * ssl->enc_read_ctx re-init
306 * ssl->s3->read_sequence zero
307 * ssl->s3->read_mac_secret re-init
308 * ssl->session->read_sym_enc assign
309 * ssl->session->read_compression assign
310 * ssl->session->read_hash assign
312 int ssl3_send_change_cipher_spec(SSL
*s
, int a
, int b
)
317 p
= (unsigned char *)s
->init_buf
->data
;
325 /* SSL3_ST_CW_CHANGE_B */
326 return (ssl3_do_write(s
, SSL3_RT_CHANGE_CIPHER_SPEC
));
329 static int ssl3_add_cert_to_buf(BUF_MEM
*buf
, unsigned long *l
, X509
*x
)
334 n
= i2d_X509(x
, NULL
);
335 if (!BUF_MEM_grow_clean(buf
, (int)(n
+ (*l
) + 3))) {
336 SSLerr(SSL_F_SSL3_ADD_CERT_TO_BUF
, ERR_R_BUF_LIB
);
339 p
= (unsigned char *)&(buf
->data
[*l
]);
347 unsigned long ssl3_output_cert_chain(SSL
*s
, X509
*x
)
355 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || s
->ctx
->extra_certs
)
360 /* TLSv1 sends a chain with nothing in it, instead of an alert */
362 if (!BUF_MEM_grow_clean(buf
, 10)) {
363 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
, ERR_R_BUF_LIB
);
368 if (ssl3_add_cert_to_buf(buf
, &l
, x
))
371 X509_STORE_CTX xs_ctx
;
373 if (!X509_STORE_CTX_init(&xs_ctx
, s
->ctx
->cert_store
, x
, NULL
)) {
374 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
, ERR_R_X509_LIB
);
377 X509_verify_cert(&xs_ctx
);
378 /* Don't leave errors in the queue */
380 for (i
= 0; i
< sk_X509_num(xs_ctx
.chain
); i
++) {
381 x
= sk_X509_value(xs_ctx
.chain
, i
);
383 if (ssl3_add_cert_to_buf(buf
, &l
, x
)) {
384 X509_STORE_CTX_cleanup(&xs_ctx
);
388 X509_STORE_CTX_cleanup(&xs_ctx
);
391 /* Thawte special :-) */
392 for (i
= 0; i
< sk_X509_num(s
->ctx
->extra_certs
); i
++) {
393 x
= sk_X509_value(s
->ctx
->extra_certs
, i
);
394 if (ssl3_add_cert_to_buf(buf
, &l
, x
))
399 p
= (unsigned char *)&(buf
->data
[4]);
402 p
= (unsigned char *)&(buf
->data
[0]);
403 *(p
++) = SSL3_MT_CERTIFICATE
;
410 * Obtain handshake message of message type 'mt' (any if mt == -1), maximum
411 * acceptable body length 'max'. The first four bytes (msg_type and length)
412 * are read in state 'st1', the body is read in state 'stn'.
414 long ssl3_get_message(SSL
*s
, int st1
, int stn
, int mt
, long max
, int *ok
)
421 if (s
->s3
->tmp
.reuse_message
) {
422 s
->s3
->tmp
.reuse_message
= 0;
423 if ((mt
>= 0) && (s
->s3
->tmp
.message_type
!= mt
)) {
424 al
= SSL_AD_UNEXPECTED_MESSAGE
;
425 SSLerr(SSL_F_SSL3_GET_MESSAGE
, SSL_R_UNEXPECTED_MESSAGE
);
430 s
->init_msg
= s
->init_buf
->data
+ 4;
431 s
->init_num
= (int)s
->s3
->tmp
.message_size
;
435 p
= (unsigned char *)s
->init_buf
->data
;
437 if (s
->state
== st1
) { /* s->init_num < 4 */
441 while (s
->init_num
< 4) {
442 i
= s
->method
->ssl_read_bytes(s
, SSL3_RT_HANDSHAKE
,
446 s
->rwstate
= SSL_READING
;
455 if (p
[0] == SSL3_MT_HELLO_REQUEST
)
457 * The server may always send 'Hello Request' messages --
458 * we are doing a handshake anyway now, so ignore them if
459 * their format is correct. Does not count for 'Finished'
462 if (p
[1] == 0 && p
[2] == 0 && p
[3] == 0) {
467 s
->msg_callback(0, s
->version
, SSL3_RT_HANDSHAKE
,
468 p
, 4, s
, s
->msg_callback_arg
);
471 while (skip_message
);
473 /* s->init_num == 4 */
475 if ((mt
>= 0) && (*p
!= mt
)) {
476 al
= SSL_AD_UNEXPECTED_MESSAGE
;
477 SSLerr(SSL_F_SSL3_GET_MESSAGE
, SSL_R_UNEXPECTED_MESSAGE
);
480 if ((mt
< 0) && (*p
== SSL3_MT_CLIENT_HELLO
) &&
481 (st1
== SSL3_ST_SR_CERT_A
) && (stn
== SSL3_ST_SR_CERT_B
)) {
483 * At this point we have got an MS SGC second client hello (maybe
484 * we should always allow the client to start a new handshake?).
485 * We need to restart the mac. Don't increment
486 * {num,total}_renegotiations because we have not completed the
489 ssl3_init_finished_mac(s
);
492 s
->s3
->tmp
.message_type
= *(p
++);
495 if (l
> (unsigned long)max
) {
496 al
= SSL_AD_ILLEGAL_PARAMETER
;
497 SSLerr(SSL_F_SSL3_GET_MESSAGE
, SSL_R_EXCESSIVE_MESSAGE_SIZE
);
500 if (l
&& !BUF_MEM_grow_clean(s
->init_buf
, (int)l
+ 4)) {
501 SSLerr(SSL_F_SSL3_GET_MESSAGE
, ERR_R_BUF_LIB
);
504 s
->s3
->tmp
.message_size
= l
;
507 s
->init_msg
= s
->init_buf
->data
+ 4;
511 /* next state (stn) */
513 n
= s
->s3
->tmp
.message_size
- s
->init_num
;
515 i
= s
->method
->ssl_read_bytes(s
, SSL3_RT_HANDSHAKE
, &p
[s
->init_num
],
518 s
->rwstate
= SSL_READING
;
526 #ifndef OPENSSL_NO_NEXTPROTONEG
528 * If receiving Finished, record MAC of prior handshake messages for
529 * Finished verification.
531 if (*s
->init_buf
->data
== SSL3_MT_FINISHED
)
535 /* Feed this message into MAC computation. */
536 ssl3_finish_mac(s
, (unsigned char *)s
->init_buf
->data
, s
->init_num
+ 4);
538 s
->msg_callback(0, s
->version
, SSL3_RT_HANDSHAKE
, s
->init_buf
->data
,
539 (size_t)s
->init_num
+ 4, s
, s
->msg_callback_arg
);
543 ssl3_send_alert(s
, SSL3_AL_FATAL
, al
);
549 int ssl_cert_type(X509
*x
, EVP_PKEY
*pkey
)
555 pk
= X509_get_pubkey(x
);
562 if (i
== EVP_PKEY_RSA
) {
563 ret
= SSL_PKEY_RSA_ENC
;
564 } else if (i
== EVP_PKEY_DSA
) {
565 ret
= SSL_PKEY_DSA_SIGN
;
567 #ifndef OPENSSL_NO_EC
568 else if (i
== EVP_PKEY_EC
) {
572 else if (i
== NID_id_GostR3410_94
|| i
== NID_id_GostR3410_94_cc
) {
573 ret
= SSL_PKEY_GOST94
;
574 } else if (i
== NID_id_GostR3410_2001
|| i
== NID_id_GostR3410_2001_cc
) {
575 ret
= SSL_PKEY_GOST01
;
583 int ssl_verify_alarm_type(long type
)
588 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
:
589 case X509_V_ERR_UNABLE_TO_GET_CRL
:
590 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER
:
591 al
= SSL_AD_UNKNOWN_CA
;
593 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE
:
594 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE
:
595 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY
:
596 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD
:
597 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD
:
598 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD
:
599 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD
:
600 case X509_V_ERR_CERT_NOT_YET_VALID
:
601 case X509_V_ERR_CRL_NOT_YET_VALID
:
602 case X509_V_ERR_CERT_UNTRUSTED
:
603 case X509_V_ERR_CERT_REJECTED
:
604 al
= SSL_AD_BAD_CERTIFICATE
;
606 case X509_V_ERR_CERT_SIGNATURE_FAILURE
:
607 case X509_V_ERR_CRL_SIGNATURE_FAILURE
:
608 al
= SSL_AD_DECRYPT_ERROR
;
610 case X509_V_ERR_CERT_HAS_EXPIRED
:
611 case X509_V_ERR_CRL_HAS_EXPIRED
:
612 al
= SSL_AD_CERTIFICATE_EXPIRED
;
614 case X509_V_ERR_CERT_REVOKED
:
615 al
= SSL_AD_CERTIFICATE_REVOKED
;
617 case X509_V_ERR_UNSPECIFIED
:
618 case X509_V_ERR_OUT_OF_MEM
:
619 case X509_V_ERR_INVALID_CALL
:
620 case X509_V_ERR_STORE_LOOKUP
:
621 al
= SSL_AD_INTERNAL_ERROR
;
623 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
:
624 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
:
625 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
:
626 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE
:
627 case X509_V_ERR_CERT_CHAIN_TOO_LONG
:
628 case X509_V_ERR_PATH_LENGTH_EXCEEDED
:
629 case X509_V_ERR_INVALID_CA
:
630 al
= SSL_AD_UNKNOWN_CA
;
632 case X509_V_ERR_APPLICATION_VERIFICATION
:
633 al
= SSL_AD_HANDSHAKE_FAILURE
;
635 case X509_V_ERR_INVALID_PURPOSE
:
636 al
= SSL_AD_UNSUPPORTED_CERTIFICATE
;
639 al
= SSL_AD_CERTIFICATE_UNKNOWN
;
645 #ifndef OPENSSL_NO_BUF_FREELISTS
647 * On some platforms, malloc() performance is bad enough that you can't just
648 * free() and malloc() buffers all the time, so we need to use freelists from
649 * unused buffers. Currently, each freelist holds memory chunks of only a
650 * given size (list->chunklen); other sized chunks are freed and malloced.
651 * This doesn't help much if you're using many different SSL option settings
652 * with a given context. (The options affecting buffer size are
653 * max_send_fragment, read buffer vs write buffer,
654 * SSL_OP_MICROSOFT_BIG_WRITE_BUFFER, SSL_OP_NO_COMPRESSION, and
655 * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS.) Using a separate freelist for every
656 * possible size is not an option, since max_send_fragment can take on many
659 * If you are on a platform with a slow malloc(), and you're using SSL
660 * connections with many different settings for these options, and you need to
661 * use the SSL_MOD_RELEASE_BUFFERS feature, you have a few options:
662 * - Link against a faster malloc implementation.
663 * - Use a separate SSL_CTX for each option set.
664 * - Improve this code.
666 static void *freelist_extract(SSL_CTX
*ctx
, int for_read
, int sz
)
668 SSL3_BUF_FREELIST
*list
;
669 SSL3_BUF_FREELIST_ENTRY
*ent
= NULL
;
672 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
673 list
= for_read
? ctx
->rbuf_freelist
: ctx
->wbuf_freelist
;
674 if (list
!= NULL
&& sz
== (int)list
->chunklen
)
677 list
->head
= ent
->next
;
679 if (--list
->len
== 0)
682 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
684 result
= OPENSSL_malloc(sz
);
688 static void freelist_insert(SSL_CTX
*ctx
, int for_read
, size_t sz
, void *mem
)
690 SSL3_BUF_FREELIST
*list
;
691 SSL3_BUF_FREELIST_ENTRY
*ent
;
693 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
694 list
= for_read
? ctx
->rbuf_freelist
: ctx
->wbuf_freelist
;
696 (sz
== list
->chunklen
|| list
->chunklen
== 0) &&
697 list
->len
< ctx
->freelist_max_len
&& sz
>= sizeof(*ent
)) {
700 ent
->next
= list
->head
;
706 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
711 # define freelist_extract(c,fr,sz) OPENSSL_malloc(sz)
712 # define freelist_insert(c,fr,sz,m) OPENSSL_free(m)
715 int ssl3_setup_read_buffer(SSL
*s
)
718 size_t len
, align
= 0, headerlen
;
720 if (SSL_version(s
) == DTLS1_VERSION
|| SSL_version(s
) == DTLS1_BAD_VER
)
721 headerlen
= DTLS1_RT_HEADER_LENGTH
;
723 headerlen
= SSL3_RT_HEADER_LENGTH
;
725 #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
726 align
= (-SSL3_RT_HEADER_LENGTH
) & (SSL3_ALIGN_PAYLOAD
- 1);
729 if (s
->s3
->rbuf
.buf
== NULL
) {
730 len
= SSL3_RT_MAX_PLAIN_LENGTH
731 + SSL3_RT_MAX_ENCRYPTED_OVERHEAD
+ headerlen
+ align
;
732 if (s
->options
& SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER
) {
733 s
->s3
->init_extra
= 1;
734 len
+= SSL3_RT_MAX_EXTRA
;
736 #ifndef OPENSSL_NO_COMP
737 if (!(s
->options
& SSL_OP_NO_COMPRESSION
))
738 len
+= SSL3_RT_MAX_COMPRESSED_OVERHEAD
;
740 if ((p
= freelist_extract(s
->ctx
, 1, len
)) == NULL
)
743 s
->s3
->rbuf
.len
= len
;
746 s
->packet
= &(s
->s3
->rbuf
.buf
[0]);
750 SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER
, ERR_R_MALLOC_FAILURE
);
754 int ssl3_setup_write_buffer(SSL
*s
)
757 size_t len
, align
= 0, headerlen
;
759 if (SSL_version(s
) == DTLS1_VERSION
|| SSL_version(s
) == DTLS1_BAD_VER
)
760 headerlen
= DTLS1_RT_HEADER_LENGTH
+ 1;
762 headerlen
= SSL3_RT_HEADER_LENGTH
;
764 #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
765 align
= (-SSL3_RT_HEADER_LENGTH
) & (SSL3_ALIGN_PAYLOAD
- 1);
768 if (s
->s3
->wbuf
.buf
== NULL
) {
769 len
= s
->max_send_fragment
770 + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD
+ headerlen
+ align
;
771 #ifndef OPENSSL_NO_COMP
772 if (!(s
->options
& SSL_OP_NO_COMPRESSION
))
773 len
+= SSL3_RT_MAX_COMPRESSED_OVERHEAD
;
775 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
))
776 len
+= headerlen
+ align
+ SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD
;
778 if ((p
= freelist_extract(s
->ctx
, 0, len
)) == NULL
)
781 s
->s3
->wbuf
.len
= len
;
787 SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER
, ERR_R_MALLOC_FAILURE
);
791 int ssl3_setup_buffers(SSL
*s
)
793 if (!ssl3_setup_read_buffer(s
))
795 if (!ssl3_setup_write_buffer(s
))
800 int ssl3_release_write_buffer(SSL
*s
)
802 if (s
->s3
->wbuf
.buf
!= NULL
) {
803 freelist_insert(s
->ctx
, 0, s
->s3
->wbuf
.len
, s
->s3
->wbuf
.buf
);
804 s
->s3
->wbuf
.buf
= NULL
;
809 int ssl3_release_read_buffer(SSL
*s
)
811 if (s
->s3
->rbuf
.buf
!= NULL
) {
812 freelist_insert(s
->ctx
, 1, s
->s3
->rbuf
.len
, s
->s3
->rbuf
.buf
);
813 s
->s3
->rbuf
.buf
= NULL
;