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boringssl/ssl/s3_both.c
David Benjamin 457112e197 unifdef a bunch of OPENSSL_NO_* ifdefs. 
Get all this stuff out of the way.

- OPENSSL_NO_MD5
- OPENSSL_NO_SHA
- OPENSSL_NO_EC
- OPENSSL_NO_ECDSA
- OPENSSL_NO_ECDH
- OPENSSL_NO_NEXTPROTONEG
- OPENSSL_NO_DH
- OPENSSL_NO_SSL3
- OPENSSL_NO_RC4
- OPENSSL_NO_RSA

Also manually removed a couple instances of OPENSSL_NO_DSA that seemed to be
confused anyway. Did some minor manual cleanup. (Removed a few now-pointless
'if (0)'s.)

Change-Id: Id540ba97ee22ff2309ab20ceb24c7eabe766d4c4
Reviewed-on: https://boringssl-review.googlesource.com/1662
Reviewed-by: Adam Langley <agl@google.com>
2014-08-28 00:41:34 +00:00

738 lines
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/* ====================================================================
* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com). */
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECC cipher suite support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <openssl/buf.h>
#include <openssl/evp.h>
#include <openssl/mem.h>
#include <openssl/md5.h>
#include <openssl/obj.h>
#include <openssl/rand.h>
#include <openssl/sha.h>
#include <openssl/x509.h>
#include "ssl_locl.h"
/* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */
int ssl3_do_write(SSL *s, int type)
{
int ret;
ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off],
s->init_num);
if (ret < 0) return(-1);
if (type == SSL3_RT_HANDSHAKE)
/* should not be done for 'Hello Request's, but in that case
* we'll ignore the result anyway */
ssl3_finish_mac(s,(unsigned char *)&s->init_buf->data[s->init_off],ret);
if (ret == s->init_num)
{
if (s->msg_callback)
s->msg_callback(1, s->version, type, s->init_buf->data, (size_t)(s->init_off + s->init_num), s, s->msg_callback_arg);
return(1);
}
s->init_off+=ret;
s->init_num-=ret;
return(0);
}
int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
{
unsigned char *p;
int i;
unsigned long l;
if (s->state == a)
{
p = ssl_handshake_start(s);
i=s->method->ssl3_enc->final_finish_mac(s,
sender,slen,s->s3->tmp.finish_md);
if (i == 0)
return 0;
s->s3->tmp.finish_md_len = i;
memcpy(p, s->s3->tmp.finish_md, i);
l=i;
/* Copy the finished so we can use it for
renegotiation checks */
if(s->type == SSL_ST_CONNECT)
{
assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_client_finished,
s->s3->tmp.finish_md, i);
s->s3->previous_client_finished_len=i;
}
else
{
assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_server_finished,
s->s3->tmp.finish_md, i);
s->s3->previous_server_finished_len=i;
}
ssl_set_handshake_header(s, SSL3_MT_FINISHED, l);
s->state=b;
}
/* SSL3_ST_SEND_xxxxxx_HELLO_B */
return ssl_do_write(s);
}
/* ssl3_take_mac calculates the Finished MAC for the handshakes messages seen to far. */
static void ssl3_take_mac(SSL *s)
{
const char *sender;
int slen;
/* If no new cipher setup return immediately: other functions will
* set the appropriate error.
*/
if (s->s3->tmp.new_cipher == NULL)
return;
if (s->state & SSL_ST_CONNECT)
{
sender=s->method->ssl3_enc->server_finished_label;
slen=s->method->ssl3_enc->server_finished_label_len;
}
else
{
sender=s->method->ssl3_enc->client_finished_label;
slen=s->method->ssl3_enc->client_finished_label_len;
}
s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s,
sender,slen,s->s3->tmp.peer_finish_md);
}
int ssl3_get_finished(SSL *s, int a, int b)
{
int al,i,ok;
long n;
unsigned char *p;
n=s->method->ssl_get_message(s,
a,
b,
SSL3_MT_FINISHED,
64, /* should actually be 36+4 :-) */
SSL_GET_MESSAGE_DONT_HASH_MESSAGE,
&ok);
if (!ok) return((int)n);
/* Snapshot the finished hash before incorporating the new message. */
ssl3_take_mac(s);
ssl3_hash_current_message(s);
/* If this occurs, we have missed a message.
* TODO(davidben): Is this check now redundant with
* SSL3_FLAGS_EXPECT_CCS? */
if (!s->s3->change_cipher_spec)
{
al=SSL_AD_UNEXPECTED_MESSAGE;
OPENSSL_PUT_ERROR(SSL, ssl3_get_finished, SSL_R_GOT_A_FIN_BEFORE_A_CCS);
goto f_err;
}
s->s3->change_cipher_spec=0;
p = s->init_msg;
i = s->s3->tmp.peer_finish_md_len;
if (i != n)
{
al=SSL_AD_DECODE_ERROR;
OPENSSL_PUT_ERROR(SSL, ssl3_get_finished, SSL_R_BAD_DIGEST_LENGTH);
goto f_err;
}
if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
{
al=SSL_AD_DECRYPT_ERROR;
OPENSSL_PUT_ERROR(SSL, ssl3_get_finished, SSL_R_DIGEST_CHECK_FAILED);
goto f_err;
}
/* Copy the finished so we can use it for
renegotiation checks */
if(s->type == SSL_ST_ACCEPT)
{
assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_client_finished,
s->s3->tmp.peer_finish_md, i);
s->s3->previous_client_finished_len=i;
}
else
{
assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_server_finished,
s->s3->tmp.peer_finish_md, i);
s->s3->previous_server_finished_len=i;
}
return(1);
f_err:
ssl3_send_alert(s,SSL3_AL_FATAL,al);
return(0);
}
/* for these 2 messages, we need to
* ssl->enc_read_ctx re-init
* ssl->s3->read_sequence zero
* ssl->s3->read_mac_secret re-init
* ssl->session->read_sym_enc assign
* ssl->session->read_compression assign
* ssl->session->read_hash assign
*/
int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
{
unsigned char *p;
if (s->state == a)
{
p=(unsigned char *)s->init_buf->data;
*p=SSL3_MT_CCS;
s->init_num=1;
s->init_off=0;
s->state=b;
}
/* SSL3_ST_CW_CHANGE_B */
return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
}
unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk)
{
unsigned char *p;
unsigned long l = 3 + SSL_HM_HEADER_LENGTH(s);
if (!ssl_add_cert_chain(s, cpk, &l))
return 0;
l -= 3 + SSL_HM_HEADER_LENGTH(s);
p = ssl_handshake_start(s);
l2n3(l,p);
l += 3;
ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l);
return l + SSL_HM_HEADER_LENGTH(s);
}
/* Obtain handshake message of message type 'mt' (any if mt == -1),
* maximum acceptable body length 'max'.
* The first four bytes (msg_type and length) are read in state 'st1',
* the body is read in state 'stn'.
*/
long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int hash_message, int *ok)
{
unsigned char *p;
unsigned long l;
long n;
int i,al;
if (s->s3->tmp.reuse_message)
{
/* A SSL_GET_MESSAGE_DONT_HASH_MESSAGE call cannot be combined
* with reuse_message; the SSL_GET_MESSAGE_DONT_HASH_MESSAGE
* would have to have been applied to the previous call. */
assert(hash_message != SSL_GET_MESSAGE_DONT_HASH_MESSAGE);
s->s3->tmp.reuse_message=0;
if ((mt >= 0) && (s->s3->tmp.message_type != mt))
{
al=SSL_AD_UNEXPECTED_MESSAGE;
OPENSSL_PUT_ERROR(SSL, ssl3_get_message, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
}
*ok=1;
s->init_msg = (uint8_t*)s->init_buf->data + 4;
s->init_num = (int)s->s3->tmp.message_size;
return s->init_num;
}
p=(unsigned char *)s->init_buf->data;
if (s->state == st1) /* s->init_num < 4 */
{
int skip_message;
do
{
while (s->init_num < 4)
{
i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
&p[s->init_num],4 - s->init_num, 0);
if (i <= 0)
{
s->rwstate=SSL_READING;
*ok = 0;
return i;
}
s->init_num+=i;
}
skip_message = 0;
if (!s->server)
if (p[0] == SSL3_MT_HELLO_REQUEST)
/* The server may always send 'Hello Request' messages --
* we are doing a handshake anyway now, so ignore them
* if their format is correct. Does not count for
* 'Finished' MAC. */
if (p[1] == 0 && p[2] == 0 &&p[3] == 0)
{
s->init_num = 0;
skip_message = 1;
if (s->msg_callback)
s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg);
}
}
while (skip_message);
/* s->init_num == 4 */
if ((mt >= 0) && (*p != mt))
{
al=SSL_AD_UNEXPECTED_MESSAGE;
OPENSSL_PUT_ERROR(SSL, ssl3_get_message, SSL_R_UNEXPECTED_MESSAGE);
goto f_err;
}
if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) &&
(st1 == SSL3_ST_SR_CERT_A) &&
(stn == SSL3_ST_SR_CERT_B))
{
/* At this point we have got an MS SGC second client
* hello (maybe we should always allow the client to
* start a new handshake?). We need to restart the mac.
* Don't increment {num,total}_renegotiations because
* we have not completed the handshake. */
ssl3_init_finished_mac(s);
}
s->s3->tmp.message_type= *(p++);
n2l3(p,l);
if (l > (unsigned long)max)
{
al=SSL_AD_ILLEGAL_PARAMETER;
OPENSSL_PUT_ERROR(SSL, ssl3_get_message, SSL_R_EXCESSIVE_MESSAGE_SIZE);
goto f_err;
}
if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */
{
al=SSL_AD_ILLEGAL_PARAMETER;
OPENSSL_PUT_ERROR(SSL, ssl3_get_message, SSL_R_EXCESSIVE_MESSAGE_SIZE);
goto f_err;
}
if (l && !BUF_MEM_grow_clean(s->init_buf,(int)l+4))
{
OPENSSL_PUT_ERROR(SSL, ssl3_get_message, ERR_R_BUF_LIB);
goto err;
}
s->s3->tmp.message_size=l;
s->state=stn;
s->init_msg = (uint8_t*)s->init_buf->data + 4;
s->init_num = 0;
}
/* next state (stn) */
p = s->init_msg;
n = s->s3->tmp.message_size - s->init_num;
while (n > 0)
{
i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0);
if (i <= 0)
{
s->rwstate=SSL_READING;
*ok = 0;
return i;
}
s->init_num += i;
n -= i;
}
/* Feed this message into MAC computation. */
if (hash_message != SSL_GET_MESSAGE_DONT_HASH_MESSAGE)
ssl3_hash_current_message(s);
if (s->msg_callback)
s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg);
*ok=1;
return s->init_num;
f_err:
ssl3_send_alert(s,SSL3_AL_FATAL,al);
err:
*ok=0;
return(-1);
}
void ssl3_hash_current_message(SSL *s)
{
/* The handshake header (different size between DTLS and TLS) is included in the hash. */
size_t header_len = s->init_msg - (uint8_t *)s->init_buf->data;
ssl3_finish_mac(s, (uint8_t *)s->init_buf->data, s->init_num + header_len);
}
/* ssl3_cert_verify_hash is documented as needing EVP_MAX_MD_SIZE because that
* is sufficient pre-TLS1.2 as well. */
OPENSSL_COMPILE_ASSERT(EVP_MAX_MD_SIZE > MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
combined_tls_hash_fits_in_max);
int ssl3_cert_verify_hash(SSL *s, uint8_t *out, size_t *out_len, const EVP_MD **out_md, EVP_PKEY *pkey)
{
/* For TLS v1.2 send signature algorithm and signature using
* agreed digest and cached handshake records. Otherwise, use
* SHA1 or MD5 + SHA1 depending on key type. */
if (SSL_USE_SIGALGS(s))
{
const uint8_t *hdata;
size_t hdatalen;
EVP_MD_CTX mctx;
unsigned len;
if (!BIO_mem_contents(s->s3->handshake_buffer, &hdata, &hdatalen))
{
OPENSSL_PUT_ERROR(SSL, ssl3_cert_verify_hash, ERR_R_INTERNAL_ERROR);
return 0;
}
EVP_MD_CTX_init(&mctx);
if (!EVP_DigestInit_ex(&mctx, *out_md, NULL)
|| !EVP_DigestUpdate(&mctx, hdata, hdatalen)
|| !EVP_DigestFinal(&mctx, out, &len))
{
OPENSSL_PUT_ERROR(SSL, ssl3_cert_verify_hash, ERR_R_EVP_LIB);
EVP_MD_CTX_cleanup(&mctx);
return 0;
}
*out_len = len;
}
else if (pkey->type == EVP_PKEY_RSA)
{
if (s->method->ssl3_enc->cert_verify_mac(s, NID_md5, out) == 0 ||
s->method->ssl3_enc->cert_verify_mac(s,
NID_sha1, out + MD5_DIGEST_LENGTH) == 0)
return 0;
*out_len = MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH;
/* Using a NULL signature MD makes EVP_PKEY_sign perform
* a raw RSA signature, rather than wrapping in a
* DigestInfo. */
*out_md = NULL;
}
else if (pkey->type == EVP_PKEY_EC)
{
if (s->method->ssl3_enc->cert_verify_mac(s, NID_sha1, out) == 0)
return 0;
*out_len = SHA_DIGEST_LENGTH;
*out_md = EVP_sha1();
}
else
{
OPENSSL_PUT_ERROR(SSL, ssl3_cert_verify_hash, ERR_R_INTERNAL_ERROR);
return 0;
}
return 1;
}
int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
{
EVP_PKEY *pk;
int ret= -1,i;
if (pkey == NULL)
pk=X509_get_pubkey(x);
else
pk=pkey;
if (pk == NULL) goto err;
i=pk->type;
if (i == EVP_PKEY_RSA)
{
ret=SSL_PKEY_RSA_ENC;
}
else if (i == EVP_PKEY_EC)
{
ret = SSL_PKEY_ECC;
}
err:
if(!pkey) EVP_PKEY_free(pk);
return(ret);
}
int ssl_verify_alarm_type(long type)
{
int al;
switch(type)
{
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
case X509_V_ERR_UNABLE_TO_GET_CRL:
case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
al=SSL_AD_UNKNOWN_CA;
break;
case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_CRL_NOT_YET_VALID:
case X509_V_ERR_CERT_UNTRUSTED:
case X509_V_ERR_CERT_REJECTED:
al=SSL_AD_BAD_CERTIFICATE;
break;
case X509_V_ERR_CERT_SIGNATURE_FAILURE:
case X509_V_ERR_CRL_SIGNATURE_FAILURE:
al=SSL_AD_DECRYPT_ERROR;
break;
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_CRL_HAS_EXPIRED:
al=SSL_AD_CERTIFICATE_EXPIRED;
break;
case X509_V_ERR_CERT_REVOKED:
al=SSL_AD_CERTIFICATE_REVOKED;
break;
case X509_V_ERR_OUT_OF_MEM:
al=SSL_AD_INTERNAL_ERROR;
break;
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
case X509_V_ERR_CERT_CHAIN_TOO_LONG:
case X509_V_ERR_PATH_LENGTH_EXCEEDED:
case X509_V_ERR_INVALID_CA:
al=SSL_AD_UNKNOWN_CA;
break;
case X509_V_ERR_APPLICATION_VERIFICATION:
al=SSL_AD_HANDSHAKE_FAILURE;
break;
case X509_V_ERR_INVALID_PURPOSE:
al=SSL_AD_UNSUPPORTED_CERTIFICATE;
break;
default:
al=SSL_AD_CERTIFICATE_UNKNOWN;
break;
}
return(al);
}
int ssl3_setup_read_buffer(SSL *s)
{
unsigned char *p;
size_t len,align=0,headerlen;
if (SSL_IS_DTLS(s))
headerlen = DTLS1_RT_HEADER_LENGTH;
else
headerlen = SSL3_RT_HEADER_LENGTH;
#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
align = (-SSL3_RT_HEADER_LENGTH)&(SSL3_ALIGN_PAYLOAD-1);
#endif
if (s->s3->rbuf.buf == NULL)
{
len = SSL3_RT_MAX_PLAIN_LENGTH
+ SSL3_RT_MAX_ENCRYPTED_OVERHEAD
+ headerlen + align;
if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
{
s->s3->init_extra = 1;
len += SSL3_RT_MAX_EXTRA;
}
if ((p=OPENSSL_malloc(len)) == NULL)
goto err;
s->s3->rbuf.buf = p;
s->s3->rbuf.len = len;
}
s->packet= &(s->s3->rbuf.buf[0]);
return 1;
err:
OPENSSL_PUT_ERROR(SSL, ssl3_setup_read_buffer, ERR_R_MALLOC_FAILURE);
return 0;
}
int ssl3_setup_write_buffer(SSL *s)
{
unsigned char *p;
size_t len,align=0,headerlen;
if (SSL_IS_DTLS(s))
headerlen = DTLS1_RT_HEADER_LENGTH + 1;
else
headerlen = SSL3_RT_HEADER_LENGTH;
#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
align = (-SSL3_RT_HEADER_LENGTH)&(SSL3_ALIGN_PAYLOAD-1);
#endif
if (s->s3->wbuf.buf == NULL)
{
len = s->max_send_fragment
+ SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD
+ headerlen + align;
if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
len += headerlen + align
+ SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD;
if ((p=OPENSSL_malloc(len)) == NULL)
goto err;
s->s3->wbuf.buf = p;
s->s3->wbuf.len = len;
}
return 1;
err:
OPENSSL_PUT_ERROR(SSL, ssl3_setup_write_buffer, ERR_R_MALLOC_FAILURE);
return 0;
}
int ssl3_setup_buffers(SSL *s)
{
if (!ssl3_setup_read_buffer(s))
return 0;
if (!ssl3_setup_write_buffer(s))
return 0;
return 1;
}
int ssl3_release_write_buffer(SSL *s)
{
if (s->s3->wbuf.buf != NULL)
{
OPENSSL_free(s->s3->wbuf.buf);
s->s3->wbuf.buf = NULL;
}
return 1;
}
int ssl3_release_read_buffer(SSL *s)
{
if (s->s3->rbuf.buf != NULL)
{
OPENSSL_free(s->s3->rbuf.buf);
s->s3->rbuf.buf = NULL;
}
return 1;
}
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