I'm reversing this change, as it seems the error is somewhere else.
[openssl.git] / ssl / d1_lib.c
1 /* ssl/d1_lib.c */
2 /* 
3  * DTLS implementation written by Nagendra Modadugu
4  * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.  
5  */
6 /* ====================================================================
7  * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer. 
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in
18  *    the documentation and/or other materials provided with the
19  *    distribution.
20  *
21  * 3. All advertising materials mentioning features or use of this
22  *    software must display the following acknowledgment:
23  *    "This product includes software developed by the OpenSSL Project
24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25  *
26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27  *    endorse or promote products derived from this software without
28  *    prior written permission. For written permission, please contact
29  *    openssl-core@OpenSSL.org.
30  *
31  * 5. Products derived from this software may not be called "OpenSSL"
32  *    nor may "OpenSSL" appear in their names without prior written
33  *    permission of the OpenSSL Project.
34  *
35  * 6. Redistributions of any form whatsoever must retain the following
36  *    acknowledgment:
37  *    "This product includes software developed by the OpenSSL Project
38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39  *
40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51  * OF THE POSSIBILITY OF SUCH DAMAGE.
52  * ====================================================================
53  *
54  * This product includes cryptographic software written by Eric Young
55  * (eay@cryptsoft.com).  This product includes software written by Tim
56  * Hudson (tjh@cryptsoft.com).
57  *
58  */
59
60 #include <stdio.h>
61 #include <openssl/objects.h>
62 #include "ssl_locl.h"
63
64 const char *dtls1_version_str="DTLSv1" OPENSSL_VERSION_PTEXT;
65
66 static long dtls1_default_timeout(void);
67
68 static SSL3_ENC_METHOD DTLSv1_enc_data={
69     dtls1_enc,
70         tls1_mac,
71         tls1_setup_key_block,
72         tls1_generate_master_secret,
73         tls1_change_cipher_state,
74         tls1_final_finish_mac,
75         TLS1_FINISH_MAC_LENGTH,
76         tls1_cert_verify_mac,
77         TLS_MD_CLIENT_FINISH_CONST,TLS_MD_CLIENT_FINISH_CONST_SIZE,
78         TLS_MD_SERVER_FINISH_CONST,TLS_MD_SERVER_FINISH_CONST_SIZE,
79         tls1_alert_code,
80         };
81
82 static SSL_METHOD DTLSv1_data= {
83         DTLS1_VERSION,
84         dtls1_new,
85         dtls1_clear,
86         dtls1_free,
87         ssl_undefined_function,
88         ssl_undefined_function,
89         ssl3_read,
90         ssl3_peek,
91         ssl3_write,
92         ssl3_shutdown,
93         ssl3_renegotiate,
94         ssl3_renegotiate_check,
95         dtls1_get_message,
96         dtls1_read_bytes,
97         dtls1_write_app_data_bytes,
98         dtls1_dispatch_alert,
99         ssl3_ctrl,
100         ssl3_ctx_ctrl,
101         ssl3_get_cipher_by_char,
102         ssl3_put_cipher_by_char,
103         ssl3_pending,
104         ssl3_num_ciphers,
105         ssl3_get_cipher,
106         ssl_bad_method,
107         dtls1_default_timeout,
108         &DTLSv1_enc_data,
109         ssl_undefined_void_function,
110         ssl3_callback_ctrl,
111         ssl3_ctx_callback_ctrl,
112         };
113
114 static long dtls1_default_timeout(void)
115         {
116         /* 2 hours, the 24 hours mentioned in the DTLSv1 spec
117          * is way too long for http, the cache would over fill */
118         return(60*60*2);
119         }
120
121 SSL_METHOD *dtlsv1_base_method(void)
122         {
123         return(&DTLSv1_data);
124         }
125
126 int dtls1_new(SSL *s)
127         {
128         DTLS1_STATE *d1;
129
130         if (!ssl3_new(s)) return(0);
131         if ((d1=OPENSSL_malloc(sizeof *d1)) == NULL) return (0);
132         memset(d1,0, sizeof *d1);
133
134         /* d1->handshake_epoch=0; */
135
136         d1->unprocessed_rcds.q=pqueue_new();
137         d1->processed_rcds.q=pqueue_new();
138         d1->buffered_messages = pqueue_new();
139         d1->sent_messages=pqueue_new();
140
141         if ( s->server)
142                 {
143                 d1->cookie_len = sizeof(s->d1->cookie);
144                 }
145
146         if( ! d1->unprocessed_rcds.q || ! d1->processed_rcds.q 
147         || ! d1->buffered_messages || ! d1->sent_messages)
148                 {
149         if ( d1->unprocessed_rcds.q) pqueue_free(d1->unprocessed_rcds.q);
150         if ( d1->processed_rcds.q) pqueue_free(d1->processed_rcds.q);
151         if ( d1->buffered_messages) pqueue_free(d1->buffered_messages);
152                 if ( d1->sent_messages) pqueue_free(d1->sent_messages);
153                 OPENSSL_free(d1);
154                 return (0);
155                 }
156
157         s->d1=d1;
158         s->method->ssl_clear(s);
159         return(1);
160         }
161
162 void dtls1_free(SSL *s)
163         {
164     pitem *item = NULL;
165     hm_fragment *frag = NULL;
166
167         ssl3_free(s);
168
169     while( (item = pqueue_pop(s->d1->unprocessed_rcds.q)) != NULL)
170         {
171         OPENSSL_free(item->data);
172         pitem_free(item);
173         }
174     pqueue_free(s->d1->unprocessed_rcds.q);
175
176     while( (item = pqueue_pop(s->d1->processed_rcds.q)) != NULL)
177         {
178         OPENSSL_free(item->data);
179         pitem_free(item);
180         }
181     pqueue_free(s->d1->processed_rcds.q);
182
183     while( (item = pqueue_pop(s->d1->buffered_messages)) != NULL)
184         {
185         frag = (hm_fragment *)item->data;
186         OPENSSL_free(frag->fragment);
187         OPENSSL_free(frag);
188         pitem_free(item);
189         }
190     pqueue_free(s->d1->buffered_messages);
191
192     while ( (item = pqueue_pop(s->d1->sent_messages)) != NULL)
193         {
194         frag = (hm_fragment *)item->data;
195         OPENSSL_free(frag->fragment);
196         OPENSSL_free(frag);
197         pitem_free(item);
198         }
199         pqueue_free(s->d1->sent_messages);
200
201         OPENSSL_free(s->d1);
202         }
203
204 void dtls1_clear(SSL *s)
205         {
206         ssl3_clear(s);
207         s->version=DTLS1_VERSION;
208         }