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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/ssl/d1_lib.c
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Diffstat (limited to 'openssl/ssl/d1_lib.c')
-rw-r--r--openssl/ssl/d1_lib.c211
1 files changed, 211 insertions, 0 deletions
diff --git a/openssl/ssl/d1_lib.c b/openssl/ssl/d1_lib.c
new file mode 100644
index 000000000..3568e97a8
--- /dev/null
+++ b/openssl/ssl/d1_lib.c
@@ -0,0 +1,211 @@
+/* ssl/d1_lib.c */
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2005 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).
+ *
+ */
+
+#include <stdio.h>
+#include <openssl/objects.h>
+#include "ssl_locl.h"
+
+const char dtls1_version_str[]="DTLSv1" OPENSSL_VERSION_PTEXT;
+
+SSL3_ENC_METHOD DTLSv1_enc_data={
+ dtls1_enc,
+ tls1_mac,
+ tls1_setup_key_block,
+ tls1_generate_master_secret,
+ tls1_change_cipher_state,
+ tls1_final_finish_mac,
+ TLS1_FINISH_MAC_LENGTH,
+ tls1_cert_verify_mac,
+ TLS_MD_CLIENT_FINISH_CONST,TLS_MD_CLIENT_FINISH_CONST_SIZE,
+ TLS_MD_SERVER_FINISH_CONST,TLS_MD_SERVER_FINISH_CONST_SIZE,
+ tls1_alert_code,
+ };
+
+long dtls1_default_timeout(void)
+ {
+ /* 2 hours, the 24 hours mentioned in the DTLSv1 spec
+ * is way too long for http, the cache would over fill */
+ return(60*60*2);
+ }
+
+IMPLEMENT_dtls1_meth_func(dtlsv1_base_method,
+ ssl_undefined_function,
+ ssl_undefined_function,
+ ssl_bad_method)
+
+int dtls1_new(SSL *s)
+ {
+ DTLS1_STATE *d1;
+
+ if (!ssl3_new(s)) return(0);
+ if ((d1=OPENSSL_malloc(sizeof *d1)) == NULL) return (0);
+ memset(d1,0, sizeof *d1);
+
+ /* d1->handshake_epoch=0; */
+#if defined(OPENSSL_SYS_VMS) || defined(VMS_TEST)
+ d1->bitmap.length=64;
+#else
+ d1->bitmap.length=sizeof(d1->bitmap.map) * 8;
+#endif
+ pq_64bit_init(&(d1->bitmap.map));
+ pq_64bit_init(&(d1->bitmap.max_seq_num));
+
+ d1->next_bitmap.length = d1->bitmap.length;
+ pq_64bit_init(&(d1->next_bitmap.map));
+ pq_64bit_init(&(d1->next_bitmap.max_seq_num));
+
+ d1->unprocessed_rcds.q=pqueue_new();
+ d1->processed_rcds.q=pqueue_new();
+ d1->buffered_messages = pqueue_new();
+ d1->sent_messages=pqueue_new();
+
+ if ( s->server)
+ {
+ d1->cookie_len = sizeof(s->d1->cookie);
+ }
+
+ if( ! d1->unprocessed_rcds.q || ! d1->processed_rcds.q
+ || ! d1->buffered_messages || ! d1->sent_messages)
+ {
+ if ( d1->unprocessed_rcds.q) pqueue_free(d1->unprocessed_rcds.q);
+ if ( d1->processed_rcds.q) pqueue_free(d1->processed_rcds.q);
+ if ( d1->buffered_messages) pqueue_free(d1->buffered_messages);
+ if ( d1->sent_messages) pqueue_free(d1->sent_messages);
+ OPENSSL_free(d1);
+ return (0);
+ }
+
+ s->d1=d1;
+ s->method->ssl_clear(s);
+ return(1);
+ }
+
+void dtls1_free(SSL *s)
+ {
+ pitem *item = NULL;
+ hm_fragment *frag = NULL;
+
+ ssl3_free(s);
+
+ while( (item = pqueue_pop(s->d1->unprocessed_rcds.q)) != NULL)
+ {
+ OPENSSL_free(item->data);
+ pitem_free(item);
+ }
+ pqueue_free(s->d1->unprocessed_rcds.q);
+
+ while( (item = pqueue_pop(s->d1->processed_rcds.q)) != NULL)
+ {
+ OPENSSL_free(item->data);
+ pitem_free(item);
+ }
+ pqueue_free(s->d1->processed_rcds.q);
+
+ while( (item = pqueue_pop(s->d1->buffered_messages)) != NULL)
+ {
+ frag = (hm_fragment *)item->data;
+ OPENSSL_free(frag->fragment);
+ OPENSSL_free(frag);
+ pitem_free(item);
+ }
+ pqueue_free(s->d1->buffered_messages);
+
+ while ( (item = pqueue_pop(s->d1->sent_messages)) != NULL)
+ {
+ frag = (hm_fragment *)item->data;
+ OPENSSL_free(frag->fragment);
+ OPENSSL_free(frag);
+ pitem_free(item);
+ }
+ pqueue_free(s->d1->sent_messages);
+
+ pq_64bit_free(&(s->d1->bitmap.map));
+ pq_64bit_free(&(s->d1->bitmap.max_seq_num));
+
+ pq_64bit_free(&(s->d1->next_bitmap.map));
+ pq_64bit_free(&(s->d1->next_bitmap.max_seq_num));
+
+ OPENSSL_free(s->d1);
+ }
+
+void dtls1_clear(SSL *s)
+ {
+ ssl3_clear(s);
+ s->version=DTLS1_VERSION;
+ }
+
+/*
+ * As it's impossible to use stream ciphers in "datagram" mode, this
+ * simple filter is designed to disengage them in DTLS. Unfortunately
+ * there is no universal way to identify stream SSL_CIPHER, so we have
+ * to explicitly list their SSL_* codes. Currently RC4 is the only one
+ * available, but if new ones emerge, they will have to be added...
+ */
+SSL_CIPHER *dtls1_get_cipher(unsigned int u)
+ {
+ SSL_CIPHER *ciph = ssl3_get_cipher(u);
+
+ if (ciph != NULL)
+ {
+ if ((ciph->algorithms&SSL_ENC_MASK) == SSL_RC4)
+ return NULL;
+ }
+
+ return ciph;
+ }