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>
127 /* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */
128 int ssl3_do_write(SSL
*s
, int type
)
132 ret
=ssl3_write_bytes(s
,type
,&s
->init_buf
->data
[s
->init_off
],
134 if (ret
< 0) return(-1);
135 if (type
== SSL3_RT_HANDSHAKE
)
136 /* should not be done for 'Hello Request's, but in that case
137 * we'll ignore the result anyway */
138 ssl3_finish_mac(s
,(unsigned char *)&s
->init_buf
->data
[s
->init_off
],ret
);
140 if (ret
== s
->init_num
)
143 s
->msg_callback(1, s
->version
, type
, s
->init_buf
->data
, (size_t)(s
->init_off
+ s
->init_num
), s
, s
->msg_callback_arg
);
151 int ssl3_send_finished(SSL
*s
, int a
, int b
, const char *sender
, int slen
)
159 d
=(unsigned char *)s
->init_buf
->data
;
162 i
=s
->method
->ssl3_enc
->final_finish_mac(s
,
163 sender
,slen
,s
->s3
->tmp
.finish_md
);
164 s
->s3
->tmp
.finish_md_len
= i
;
165 memcpy(p
, s
->s3
->tmp
.finish_md
, i
);
169 #ifdef OPENSSL_SYS_WIN16
170 /* MSVC 1.5 does not clear the top bytes of the word unless
176 *(d
++)=SSL3_MT_FINISHED
;
178 s
->init_num
=(int)l
+4;
184 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
185 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
188 int ssl3_get_finished(SSL
*s
, int a
, int b
)
194 /* the mac has already been generated when we received the
195 * change cipher spec message and is in s->s3->tmp.peer_finish_md
198 n
=s
->method
->ssl_get_message(s
,
202 64, /* should actually be 36+4 :-) */
205 if (!ok
) return((int)n
);
207 /* If this occurs, we have missed a message */
208 if (!s
->s3
->change_cipher_spec
)
210 al
=SSL_AD_UNEXPECTED_MESSAGE
;
211 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_GOT_A_FIN_BEFORE_A_CCS
);
214 s
->s3
->change_cipher_spec
=0;
216 p
= (unsigned char *)s
->init_msg
;
217 i
= s
->s3
->tmp
.peer_finish_md_len
;
221 al
=SSL_AD_DECODE_ERROR
;
222 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_BAD_DIGEST_LENGTH
);
226 if (memcmp(p
, s
->s3
->tmp
.peer_finish_md
, i
) != 0)
228 al
=SSL_AD_DECRYPT_ERROR
;
229 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_DIGEST_CHECK_FAILED
);
235 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
239 /* for these 2 messages, we need to
240 * ssl->enc_read_ctx re-init
241 * ssl->s3->read_sequence zero
242 * ssl->s3->read_mac_secret re-init
243 * ssl->session->read_sym_enc assign
244 * ssl->session->read_compression assign
245 * ssl->session->read_hash assign
247 int ssl3_send_change_cipher_spec(SSL
*s
, int a
, int b
)
253 p
=(unsigned char *)s
->init_buf
->data
;
261 /* SSL3_ST_CW_CHANGE_B */
262 return(ssl3_do_write(s
,SSL3_RT_CHANGE_CIPHER_SPEC
));
265 unsigned long ssl3_output_cert_chain(SSL
*s
, X509
*x
)
271 X509_STORE_CTX xs_ctx
;
276 if ((s
->mode
& SSL_MODE_NO_AUTO_CHAIN
) || s
->ctx
->extra_certs
)
281 /* TLSv1 sends a chain with nothing in it, instead of an alert */
283 if (!BUF_MEM_grow_clean(buf
,10))
285 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
290 if(!no_chain
&& !X509_STORE_CTX_init(&xs_ctx
,s
->ctx
->cert_store
,NULL
,NULL
))
292 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_X509_LIB
);
299 if (!BUF_MEM_grow_clean(buf
,(int)(n
+l
+3)))
301 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
304 p
=(unsigned char *)&(buf
->data
[l
]);
312 if (X509_NAME_cmp(X509_get_subject_name(x
),
313 X509_get_issuer_name(x
)) == 0) break;
315 i
=X509_STORE_get_by_subject(&xs_ctx
,X509_LU_X509
,
316 X509_get_issuer_name(x
),&obj
);
319 /* Count is one too high since the X509_STORE_get uped the
324 X509_STORE_CTX_cleanup(&xs_ctx
);
327 /* Thawte special :-) */
328 if (s
->ctx
->extra_certs
!= NULL
)
329 for (i
=0; i
<sk_X509_num(s
->ctx
->extra_certs
); i
++)
331 x
=sk_X509_value(s
->ctx
->extra_certs
,i
);
333 if (!BUF_MEM_grow_clean(buf
,(int)(n
+l
+3)))
335 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
338 p
=(unsigned char *)&(buf
->data
[l
]);
345 p
=(unsigned char *)&(buf
->data
[4]);
348 p
=(unsigned char *)&(buf
->data
[0]);
349 *(p
++)=SSL3_MT_CERTIFICATE
;
355 /* Obtain handshake message of message type 'mt' (any if mt == -1),
356 * maximum acceptable body length 'max'.
357 * The first four bytes (msg_type and length) are read in state 'st1',
358 * the body is read in state 'stn'.
360 long ssl3_get_message(SSL
*s
, int st1
, int stn
, int mt
, long max
, int *ok
)
367 if (s
->s3
->tmp
.reuse_message
)
369 s
->s3
->tmp
.reuse_message
=0;
370 if ((mt
>= 0) && (s
->s3
->tmp
.message_type
!= mt
))
372 al
=SSL_AD_UNEXPECTED_MESSAGE
;
373 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_UNEXPECTED_MESSAGE
);
377 s
->init_msg
= s
->init_buf
->data
+ 4;
378 s
->init_num
= (int)s
->s3
->tmp
.message_size
;
382 p
=(unsigned char *)s
->init_buf
->data
;
384 if (s
->state
== st1
) /* s->init_num < 4 */
390 while (s
->init_num
< 4)
392 i
=s
->method
->ssl_read_bytes(s
,SSL3_RT_HANDSHAKE
,
393 &p
[s
->init_num
],4 - s
->init_num
, 0);
396 s
->rwstate
=SSL_READING
;
405 if (p
[0] == SSL3_MT_HELLO_REQUEST
)
406 /* The server may always send 'Hello Request' messages --
407 * we are doing a handshake anyway now, so ignore them
408 * if their format is correct. Does not count for
410 if (p
[1] == 0 && p
[2] == 0 &&p
[3] == 0)
416 s
->msg_callback(0, s
->version
, SSL3_RT_HANDSHAKE
, p
, 4, s
, s
->msg_callback_arg
);
419 while (skip_message
);
421 /* s->init_num == 4 */
423 if ((mt
>= 0) && (*p
!= mt
))
425 al
=SSL_AD_UNEXPECTED_MESSAGE
;
426 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_UNEXPECTED_MESSAGE
);
429 if ((mt
< 0) && (*p
== SSL3_MT_CLIENT_HELLO
) &&
430 (st1
== SSL3_ST_SR_CERT_A
) &&
431 (stn
== SSL3_ST_SR_CERT_B
))
433 /* At this point we have got an MS SGC second client
434 * hello (maybe we should always allow the client to
435 * start a new handshake?). We need to restart the mac.
436 * Don't increment {num,total}_renegotiations because
437 * we have not completed the handshake. */
438 ssl3_init_finished_mac(s
);
441 s
->s3
->tmp
.message_type
= *(p
++);
444 if (l
> (unsigned long)max
)
446 al
=SSL_AD_ILLEGAL_PARAMETER
;
447 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_EXCESSIVE_MESSAGE_SIZE
);
450 if (l
> (INT_MAX
-4)) /* BUF_MEM_grow takes an 'int' parameter */
452 al
=SSL_AD_ILLEGAL_PARAMETER
;
453 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_EXCESSIVE_MESSAGE_SIZE
);
456 if (l
&& !BUF_MEM_grow_clean(s
->init_buf
,(int)l
+4))
458 SSLerr(SSL_F_SSL3_GET_MESSAGE
,ERR_R_BUF_LIB
);
461 s
->s3
->tmp
.message_size
=l
;
464 s
->init_msg
= s
->init_buf
->data
+ 4;
468 /* next state (stn) */
470 n
= s
->s3
->tmp
.message_size
- s
->init_num
;
473 i
=s
->method
->ssl_read_bytes(s
,SSL3_RT_HANDSHAKE
,&p
[s
->init_num
],n
,0);
476 s
->rwstate
=SSL_READING
;
483 ssl3_finish_mac(s
, (unsigned char *)s
->init_buf
->data
, s
->init_num
+ 4);
485 s
->msg_callback(0, s
->version
, SSL3_RT_HANDSHAKE
, s
->init_buf
->data
, (size_t)s
->init_num
+ 4, s
, s
->msg_callback_arg
);
489 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
495 int ssl_cert_type(X509
*x
, EVP_PKEY
*pkey
)
501 pk
=X509_get_pubkey(x
);
504 if (pk
== NULL
) goto err
;
507 if (i
== EVP_PKEY_RSA
)
509 ret
=SSL_PKEY_RSA_ENC
;
511 else if (i
== EVP_PKEY_DSA
)
513 ret
=SSL_PKEY_DSA_SIGN
;
515 #ifndef OPENSSL_NO_EC
516 else if (i
== EVP_PKEY_EC
)
521 else if (i
== NID_id_GostR3410_94
|| i
== NID_id_GostR3410_94_cc
)
523 ret
= SSL_PKEY_GOST94
;
525 else if (i
== NID_id_GostR3410_2001
|| i
== NID_id_GostR3410_2001_cc
)
527 ret
= SSL_PKEY_GOST01
;
530 if(!pkey
) EVP_PKEY_free(pk
);
534 int ssl_verify_alarm_type(long type
)
540 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
:
541 case X509_V_ERR_UNABLE_TO_GET_CRL
:
542 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER
:
543 al
=SSL_AD_UNKNOWN_CA
;
545 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE
:
546 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE
:
547 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY
:
548 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD
:
549 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD
:
550 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD
:
551 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD
:
552 case X509_V_ERR_CERT_NOT_YET_VALID
:
553 case X509_V_ERR_CRL_NOT_YET_VALID
:
554 case X509_V_ERR_CERT_UNTRUSTED
:
555 case X509_V_ERR_CERT_REJECTED
:
556 al
=SSL_AD_BAD_CERTIFICATE
;
558 case X509_V_ERR_CERT_SIGNATURE_FAILURE
:
559 case X509_V_ERR_CRL_SIGNATURE_FAILURE
:
560 al
=SSL_AD_DECRYPT_ERROR
;
562 case X509_V_ERR_CERT_HAS_EXPIRED
:
563 case X509_V_ERR_CRL_HAS_EXPIRED
:
564 al
=SSL_AD_CERTIFICATE_EXPIRED
;
566 case X509_V_ERR_CERT_REVOKED
:
567 al
=SSL_AD_CERTIFICATE_REVOKED
;
569 case X509_V_ERR_OUT_OF_MEM
:
570 al
=SSL_AD_INTERNAL_ERROR
;
572 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
:
573 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
:
574 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
:
575 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE
:
576 case X509_V_ERR_CERT_CHAIN_TOO_LONG
:
577 case X509_V_ERR_PATH_LENGTH_EXCEEDED
:
578 case X509_V_ERR_INVALID_CA
:
579 al
=SSL_AD_UNKNOWN_CA
;
581 case X509_V_ERR_APPLICATION_VERIFICATION
:
582 al
=SSL_AD_HANDSHAKE_FAILURE
;
584 case X509_V_ERR_INVALID_PURPOSE
:
585 al
=SSL_AD_UNSUPPORTED_CERTIFICATE
;
588 al
=SSL_AD_CERTIFICATE_UNKNOWN
;
594 #if !defined(OPENSSL_NO_BUF_FREELISTS) && !defined(OPENSSL_NO_RELEASE_BUFFERS)
595 /* On some platforms, malloc() performance is bad enough that you can't just
596 * free() and malloc() buffers all the time, so we need to use freelists from
597 * unused buffers. Currently, each freelist holds memory chunks of only a
598 * given size (list->chunklen); other sized chunks are freed and malloced.
599 * This doesn't help much if you're using many different SSL option settings
600 * with a given context. (The options affecting buffer size are
601 * max_send_fragment, read buffer vs write buffer,
602 * SSL_OP_MICROSOFT_BIG_WRITE_BUFFER, SSL_OP_NO_COMPRESSION, and
603 * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS.) Using a separate freelist for every
604 * possible size is not an option, since max_send_fragment can take on many
607 * If you are on a platform with a slow malloc(), and you're using SSL
608 * connections with many different settings for these options, and you need to
609 * use the SSL_MOD_RELEASE_BUFFERS feature, you have a few options:
610 * - Link against a faster malloc implementation.
611 * - Use a separate SSL_CTX for each option set.
612 * - Improve this code.
615 freelist_extract(SSL_CTX
*ctx
, int for_read
, int sz
)
617 SSL3_BUF_FREELIST
*list
;
618 SSL3_BUF_FREELIST_ENTRY
*ent
= NULL
;
621 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
622 list
= for_read
? ctx
->rbuf_freelist
: ctx
->wbuf_freelist
;
623 if (list
!= NULL
&& sz
== list
->chunklen
)
627 list
->head
= ent
->next
;
629 if (--list
->len
== 0)
632 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
634 result
= OPENSSL_malloc(sz
);
639 freelist_insert(SSL_CTX
*ctx
, int for_read
, size_t sz
, void *mem
)
641 SSL3_BUF_FREELIST
*list
;
642 SSL3_BUF_FREELIST_ENTRY
*ent
;
644 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
645 list
= for_read
? ctx
->rbuf_freelist
: ctx
->wbuf_freelist
;
647 (sz
== list
->chunklen
|| list
->chunklen
== 0) &&
648 list
->len
< ctx
->freelist_max_len
&&
653 ent
->next
= list
->head
;
659 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
664 #define freelist_extract(c,fr,sz) OPENSSL_malloc(sz)
665 #define freelist_insert(c,fr,sz,m) OPENSSL_free(m)
668 int ssl3_setup_read_buffer(SSL
*s
)
673 #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
674 align
= (-SSL3_RT_HEADER_LENGTH
)&(SSL3_ALIGN_PAYLOAD
-1);
677 if (s
->s3
->rbuf
.buf
== NULL
)
679 len
= SSL3_RT_MAX_PLAIN_LENGTH
680 + SSL3_RT_MAX_ENCRYPTED_OVERHEAD
681 + SSL3_RT_HEADER_LENGTH
+ align
;
682 if (s
->options
& SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER
)
684 s
->s3
->init_extra
= 1;
685 len
+= SSL3_RT_MAX_EXTRA
;
687 #ifndef OPENSSL_NO_COMP
688 if (!(s
->options
& SSL_OP_NO_COMPRESSION
))
689 len
+= SSL3_RT_MAX_COMPRESSED_OVERHEAD
;
691 if ((p
=freelist_extract(s
->ctx
, 1, len
)) == NULL
)
694 s
->s3
->rbuf
.len
= len
;
697 s
->packet
= &(s
->s3
->rbuf
.buf
[0]);
701 SSLerr(SSL_F_SSL3_SETUP_BUFFERS
,ERR_R_MALLOC_FAILURE
);
705 int ssl3_setup_write_buffer(SSL
*s
)
710 #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
711 align
= (-SSL3_RT_HEADER_LENGTH
)&(SSL3_ALIGN_PAYLOAD
-1);
714 if (s
->s3
->wbuf
.buf
== NULL
)
716 len
= s
->max_send_fragment
717 + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD
718 + SSL3_RT_HEADER_LENGTH
+ align
;
719 #ifndef OPENSSL_NO_COMP
720 if (!(s
->options
& SSL_OP_NO_COMPRESSION
))
721 len
+= SSL3_RT_MAX_COMPRESSED_OVERHEAD
;
723 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
))
724 len
+= SSL3_RT_HEADER_LENGTH
+ align
725 + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD
;
727 if ((p
=freelist_extract(s
->ctx
, 0, len
)) == NULL
)
730 s
->s3
->wbuf
.len
= len
;
736 SSLerr(SSL_F_SSL3_SETUP_BUFFERS
,ERR_R_MALLOC_FAILURE
);
741 int ssl3_setup_buffers(SSL
*s
)
743 if (!ssl3_setup_read_buffer(s
))
745 if (!ssl3_setup_write_buffer(s
))
750 int ssl3_release_write_buffer(SSL
*s
)
752 if (s
->s3
->wbuf
.buf
!= NULL
)
754 freelist_insert(s
->ctx
, 0, s
->s3
->wbuf
.len
, s
->s3
->wbuf
.buf
);
755 s
->s3
->wbuf
.buf
= NULL
;
760 int ssl3_release_read_buffer(SSL
*s
)
762 if (s
->s3
->rbuf
.buf
!= NULL
)
764 freelist_insert(s
->ctx
, 1, s
->s3
->rbuf
.len
, s
->s3
->rbuf
.buf
);
765 s
->s3
->rbuf
.buf
= NULL
;