The first step towards a SSL_peek fix.
The main thing to verify about these changes is that nothing at all has changed, as far as behaviour is concerned (except that some SSLerr() invocations now have a different function code): SSL_read (ssl2_read, ssl3_read) behaves exactly as before, and SSL_peek refuses to do any work exactly as before. But now the functions actually doing the work have a 'peek' flag, so it should be easy to change them to behave accordingly.
This commit is contained in:
Bodo Möller
parent
a29b1a3f0f
commit
2452e013aa
8 changed files with 206 additions and 55 deletions
5
CHANGES
5
CHANGES
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@ -18,8 +18,9 @@
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*) Disable ssl2_peek and ssl3_peek (i.e., both implementations
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of SSL_peek) because they both are completely broken.
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They will be fixed RSN by adding an additional 'peek' parameter
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to the internal read functions.
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For fixing this, the internal read functions now have an additional
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'peek' parameter, but the actual peek functionality has not
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yet been implemented.
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[Bodo Moeller]
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*) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
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97
ssl/s2_pkt.c
97
ssl/s2_pkt.c
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@ -55,6 +55,59 @@
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* ====================================================================
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* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
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||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
|
||||
* distribution.
|
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*
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* 3. All advertising materials mentioning features or use of this
|
||||
* software must display the following acknowledgment:
|
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* "This product includes software developed by the OpenSSL Project
|
||||
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
|
||||
* prior written permission. For written permission, please contact
|
||||
* openssl-core@openssl.org.
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||||
*
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||||
* 5. Products derived from this software may not be called "OpenSSL"
|
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* nor may "OpenSSL" appear in their names without prior written
|
||||
* permission of the OpenSSL Project.
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||||
*
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* 6. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
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||||
* "This product includes software developed by the OpenSSL Project
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||||
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* 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,
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||||
* 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.
|
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include "ssl_locl.h"
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#ifndef NO_SSL2
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@ -66,28 +119,12 @@ static int read_n(SSL *s,unsigned int n,unsigned int max,unsigned int extend);
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static int do_ssl_write(SSL *s, const unsigned char *buf, unsigned int len);
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static int write_pending(SSL *s, const unsigned char *buf, unsigned int len);
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static int ssl_mt_error(int n);
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int ssl2_peek(SSL *s, char *buf, int len)
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{
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#if 1
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SSLerr(SSL_F_SSL2_PEEK, SSL_R_FIXME); /* function is totally broken */
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return -1;
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#else
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int ret;
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ret=ssl2_read(s,buf,len);
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if (ret > 0)
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{
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s->s2->ract_data_length+=ret;
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s->s2->ract_data-=ret;
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}
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return(ret);
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#endif
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}
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/* SSL_read -
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/* SSL 2.0 imlementation for SSL_read/SSL_peek -
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* This routine will return 0 to len bytes, decrypted etc if required.
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*/
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int ssl2_read(SSL *s, void *buf, int len)
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static int ssl2_read_internal(SSL *s, void *buf, int len, int peek)
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{
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int n;
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unsigned char mac[MAX_MAC_SIZE];
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@ -95,6 +132,12 @@ int ssl2_read(SSL *s, void *buf, int len)
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int i;
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unsigned int mac_size=0;
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if (peek)
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{
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SSLerr(SSL_F_SSL2_READ_INTERNAL, SSL_R_FIXME); /* proper implementation not yet completed */
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return -1;
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}
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ssl2_read_again:
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if (SSL_in_init(s) && !s->in_handshake)
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{
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@ -102,7 +145,7 @@ ssl2_read_again:
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if (n < 0) return(n);
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if (n == 0)
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{
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SSLerr(SSL_F_SSL2_READ,SSL_R_SSL_HANDSHAKE_FAILURE);
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SSLerr(SSL_F_SSL2_READ_INTERNAL,SSL_R_SSL_HANDSHAKE_FAILURE);
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return(-1);
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}
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}
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@ -138,7 +181,7 @@ ssl2_read_again:
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(p[2] == SSL2_MT_CLIENT_HELLO) ||
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(p[2] == SSL2_MT_SERVER_HELLO))))
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{
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SSLerr(SSL_F_SSL2_READ,SSL_R_NON_SSLV2_INITIAL_PACKET);
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SSLerr(SSL_F_SSL2_READ_INTERNAL,SSL_R_NON_SSLV2_INITIAL_PACKET);
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return(-1);
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}
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}
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@ -216,7 +259,7 @@ ssl2_read_again:
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(unsigned int)mac_size) != 0) ||
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(s->s2->rlength%EVP_CIPHER_CTX_block_size(s->enc_read_ctx) != 0))
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{
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SSLerr(SSL_F_SSL2_READ,SSL_R_BAD_MAC_DECODE);
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SSLerr(SSL_F_SSL2_READ_INTERNAL,SSL_R_BAD_MAC_DECODE);
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return(-1);
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}
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}
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@ -253,11 +296,21 @@ ssl2_read_again:
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}
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else
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{
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SSLerr(SSL_F_SSL2_READ,SSL_R_BAD_STATE);
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SSLerr(SSL_F_SSL2_READ_INTERNAL,SSL_R_BAD_STATE);
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return(-1);
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}
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}
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int ssl2_read(SSL *s, void *buf, int len)
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{
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return ssl2_read_internal(s, buf, len, 0);
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}
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int ssl2_peek(SSL *s, char *buf, int len)
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{
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return ssl2_read_internal(s, buf, len, 1);
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}
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static int read_n(SSL *s, unsigned int n, unsigned int max,
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unsigned int extend)
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{
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@ -365,7 +365,7 @@ long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
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while (s->init_num < 4)
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{
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i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],
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4 - s->init_num);
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4 - s->init_num, 0);
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if (i <= 0)
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{
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s->rwstate=SSL_READING;
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@ -434,7 +434,7 @@ long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
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n=s->s3->tmp.message_size;
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while (n > 0)
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{
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i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n);
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i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0);
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if (i <= 0)
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{
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s->rwstate=SSL_READING;
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90
ssl/s3_lib.c
90
ssl/s3_lib.c
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@ -55,6 +55,59 @@
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* copied and put under another distribution licence
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||||
* [including the GNU Public Licence.]
|
||||
*/
|
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/* ====================================================================
|
||||
* Copyright (c) 1998-2000 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).
|
||||
*
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||||
*/
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#include <stdio.h>
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#include <openssl/md5.h>
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|
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@ -1189,7 +1242,7 @@ int ssl3_shutdown(SSL *s)
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else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
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{
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/* If we are waiting for a close from our peer, we are closed */
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ssl3_read_bytes(s,0,NULL,0);
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ssl3_read_bytes(s,0,NULL,0,0);
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}
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if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
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|
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@ -1252,14 +1305,14 @@ int ssl3_write(SSL *s, const void *buf, int len)
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return(ret);
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}
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int ssl3_read(SSL *s, void *buf, int len)
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static int ssl3_read_internal(SSL *s, void *buf, int len, int peek)
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{
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int ret;
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clear_sys_error();
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if (s->s3->renegotiate) ssl3_renegotiate_check(s);
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s->s3->in_read_app_data=1;
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ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
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ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
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if ((ret == -1) && (s->s3->in_read_app_data == 0))
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{
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/* ssl3_read_bytes decided to call s->handshake_func, which
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|
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@ -1269,7 +1322,7 @@ int ssl3_read(SSL *s, void *buf, int len)
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* by resetting 'in_read_app_data', strangely); so disable
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* handshake processing and try to read application data again. */
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s->in_handshake++;
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ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len);
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ret=ssl3_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
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s->in_handshake--;
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}
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else
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|
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@ -1278,31 +1331,14 @@ int ssl3_read(SSL *s, void *buf, int len)
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return(ret);
|
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}
|
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|
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int ssl3_read(SSL *s, void *buf, int len)
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{
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return ssl3_read_internal(s, buf, len, 0);
|
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}
|
||||
|
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int ssl3_peek(SSL *s, char *buf, int len)
|
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{
|
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#if 1
|
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SSLerr(SSL_F_SSL3_PEEK, SSL_R_FIXME); /* function is totally broken */
|
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return -1;
|
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#else
|
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SSL3_RECORD *rr;
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int n;
|
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|
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rr= &(s->s3->rrec);
|
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if ((rr->length == 0) || (rr->type != SSL3_RT_APPLICATION_DATA))
|
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{
|
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n=ssl3_read(s,buf,1);
|
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if (n <= 0) return(n);
|
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rr->length++;
|
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rr->off--;
|
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}
|
||||
|
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if ((unsigned int)len > rr->length)
|
||||
n=rr->length;
|
||||
else
|
||||
n=len;
|
||||
memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
|
||||
return(n);
|
||||
#endif
|
||||
return ssl3_read_internal(s, buf, len, 0);
|
||||
}
|
||||
|
||||
int ssl3_renegotiate(SSL *s)
|
||||
|
|
|
|||
|
|
@ -704,13 +704,19 @@ static int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
|
|||
* Application data protocol
|
||||
* none of our business
|
||||
*/
|
||||
int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len)
|
||||
int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek)
|
||||
{
|
||||
int al,i,j,ret;
|
||||
unsigned int n;
|
||||
SSL3_RECORD *rr;
|
||||
void (*cb)()=NULL;
|
||||
|
||||
if (peek)
|
||||
{
|
||||
SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_FIXME); /* proper implementation not yet completed */
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (s->s3->rbuf.buf == NULL) /* Not initialized yet */
|
||||
if (!ssl3_setup_buffers(s))
|
||||
return(-1);
|
||||
|
|
|
|||
|
|
@ -1240,6 +1240,7 @@ int SSL_COMP_add_compression_method(int id,char *cm);
|
|||
#define SSL_F_SSL2_ENC_INIT 124
|
||||
#define SSL_F_SSL2_PEEK 234
|
||||
#define SSL_F_SSL2_READ 125
|
||||
#define SSL_F_SSL2_READ_INTERNAL 236
|
||||
#define SSL_F_SSL2_SET_CERTIFICATE 126
|
||||
#define SSL_F_SSL2_WRITE 127
|
||||
#define SSL_F_SSL3_ACCEPT 128
|
||||
|
|
|
|||
|
|
@ -93,6 +93,7 @@ static ERR_STRING_DATA SSL_str_functs[]=
|
|||
{ERR_PACK(0,SSL_F_SSL2_ENC_INIT,0), "SSL2_ENC_INIT"},
|
||||
{ERR_PACK(0,SSL_F_SSL2_PEEK,0), "SSL2_PEEK"},
|
||||
{ERR_PACK(0,SSL_F_SSL2_READ,0), "SSL2_READ"},
|
||||
{ERR_PACK(0,SSL_F_SSL2_READ_INTERNAL,0), "SSL2_READ_INTERNAL"},
|
||||
{ERR_PACK(0,SSL_F_SSL2_SET_CERTIFICATE,0), "SSL2_SET_CERTIFICATE"},
|
||||
{ERR_PACK(0,SSL_F_SSL2_WRITE,0), "SSL2_WRITE"},
|
||||
{ERR_PACK(0,SSL_F_SSL3_ACCEPT,0), "SSL3_ACCEPT"},
|
||||
|
|
|
|||
|
|
@ -55,6 +55,59 @@
|
|||
* copied and put under another distribution licence
|
||||
* [including the GNU Public Licence.]
|
||||
*/
|
||||
/* ====================================================================
|
||||
* Copyright (c) 1998-2000 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).
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef HEADER_SSL_LOCL_H
|
||||
#define HEADER_SSL_LOCL_H
|
||||
|
|
@ -494,7 +547,7 @@ SSL_CIPHER *ssl3_get_cipher(unsigned int u);
|
|||
int ssl3_renegotiate(SSL *ssl);
|
||||
int ssl3_renegotiate_check(SSL *ssl);
|
||||
int ssl3_dispatch_alert(SSL *s);
|
||||
int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len);
|
||||
int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
|
||||
int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
|
||||
int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
|
||||
const char *sender, int slen,unsigned char *p);
|
||||
|
|
|
|||
Loading…
Reference in a new issue