1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
111 #include "../ssl_locl.h"
112 #include "record_locl.h"
114 void SSL3_BUFFER_set_data(SSL3_BUFFER *b, const unsigned char *d, int n)
117 memcpy(b->buf, d, n);
123 * Clear the contents of an SSL3_BUFFER but retain any memory allocated. Also
124 * retains the default_len setting
126 void SSL3_BUFFER_clear(SSL3_BUFFER *b)
132 void SSL3_BUFFER_release(SSL3_BUFFER *b)
134 OPENSSL_free(b->buf);
138 int ssl3_setup_read_buffer(SSL *s)
141 size_t len, align = 0, headerlen;
144 b = RECORD_LAYER_get_rbuf(&s->rlayer);
147 headerlen = DTLS1_RT_HEADER_LENGTH;
149 headerlen = SSL3_RT_HEADER_LENGTH;
151 #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
152 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
155 if (b->buf == NULL) {
156 len = SSL3_RT_MAX_PLAIN_LENGTH
157 + SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
158 #ifndef OPENSSL_NO_COMP
159 if (ssl_allow_compression(s))
160 len += SSL3_RT_MAX_COMPRESSED_OVERHEAD;
162 if (b->default_len > len)
163 len = b->default_len;
164 if ((p = OPENSSL_malloc(len)) == NULL)
170 RECORD_LAYER_set_packet(&s->rlayer, &(b->buf[0]));
174 SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER, ERR_R_MALLOC_FAILURE);
178 int ssl3_setup_write_buffer(SSL *s, unsigned int numwpipes)
181 size_t len, align = 0, headerlen;
183 unsigned int currpipe;
185 s->rlayer.numwpipes = numwpipes;
189 headerlen = DTLS1_RT_HEADER_LENGTH + 1;
191 headerlen = SSL3_RT_HEADER_LENGTH;
193 #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
194 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
197 len = s->max_send_fragment
198 + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
199 #ifndef OPENSSL_NO_COMP
200 if (ssl_allow_compression(s))
201 len += SSL3_RT_MAX_COMPRESSED_OVERHEAD;
203 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
204 len += headerlen + align + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD;
206 wb = RECORD_LAYER_get_wbuf(&s->rlayer);
207 for (currpipe = 0; currpipe < numwpipes; currpipe++) {
208 if (wb[currpipe].buf == NULL) {
209 if ((p = OPENSSL_malloc(len)) == NULL) {
210 s->rlayer.numwpipes = currpipe;
213 wb[currpipe].buf = p;
214 wb[currpipe].len = len;
221 SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER, ERR_R_MALLOC_FAILURE);
225 int ssl3_setup_buffers(SSL *s)
227 if (!ssl3_setup_read_buffer(s))
229 if (!ssl3_setup_write_buffer(s, 1))
234 int ssl3_release_write_buffer(SSL *s)
239 pipes = s->rlayer.numwpipes;
241 wb = &RECORD_LAYER_get_wbuf(&s->rlayer)[pipes - 1];
243 OPENSSL_free(wb->buf);
247 s->rlayer.numwpipes = 0;
251 int ssl3_release_read_buffer(SSL *s)
255 b = RECORD_LAYER_get_rbuf(&s->rlayer);
256 OPENSSL_free(b->buf);