1 files changed, 218 insertions, 0 deletions

diff --git a/src/lib/libssl/dtls1.h b/src/lib/libssl/dtls1.h
new file mode 100644
index 0000000000..f159d37110
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+++ b/src/lib/libssl/dtls1.h
@@ -0,0 +1,218 @@
+/* ssl/dtls1.h */
+/* 
+ * 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).
+ *
+ */
+
+#ifndef HEADER_DTLS1_H 
+#define HEADER_DTLS1_H 
+
+#include <openssl/buffer.h>
+#include <openssl/pqueue.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define DTLS1_VERSION                   0xFEFF
+#define DTLS1_BAD_VER                   0x0100
+
+#if 0
+/* this alert description is not specified anywhere... */
+#define DTLS1_AD_MISSING_HANDSHAKE_MESSAGE    110
+#endif
+
+/* lengths of messages */
+#define DTLS1_COOKIE_LENGTH                     32
+
+#define DTLS1_RT_HEADER_LENGTH                  13
+
+#define DTLS1_HM_HEADER_LENGTH                  12
+
+#define DTLS1_HM_BAD_FRAGMENT                   -2
+#define DTLS1_HM_FRAGMENT_RETRY                 -3
+
+#define DTLS1_CCS_HEADER_LENGTH                  1
+
+#ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
+#define DTLS1_AL_HEADER_LENGTH                   7
+#else
+#define DTLS1_AL_HEADER_LENGTH                   2
+#endif
+
+
+typedef struct dtls1_bitmap_st
+        {
+        PQ_64BIT map;
+        unsigned long length;     /* sizeof the bitmap in bits */
+        PQ_64BIT max_seq_num;  /* max record number seen so far */
+        } DTLS1_BITMAP;
+
+struct hm_header_st
+        {
+        unsigned char type;
+        unsigned long msg_len;
+        unsigned short seq;
+        unsigned long frag_off;
+        unsigned long frag_len;
+        unsigned int is_ccs;
+        };
+
+struct ccs_header_st
+        {
+        unsigned char type;
+        unsigned short seq;
+        };
+
+struct dtls1_timeout_st
+        {
+        /* Number of read timeouts so far */
+        unsigned int read_timeouts;
+        
+        /* Number of write timeouts so far */
+        unsigned int write_timeouts;
+        
+        /* Number of alerts received so far */
+        unsigned int num_alerts;
+        };
+
+typedef struct record_pqueue_st
+        {
+        unsigned short epoch;
+        pqueue q;
+        } record_pqueue;
+
+typedef struct hm_fragment_st
+        {
+        struct hm_header_st msg_header;
+        unsigned char *fragment;
+        } hm_fragment;
+
+typedef struct dtls1_state_st
+        {
+        unsigned int send_cookie;
+        unsigned char cookie[DTLS1_COOKIE_LENGTH];
+        unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH];
+        unsigned int cookie_len;
+
+        /* 
+         * The current data and handshake epoch.  This is initially
+         * undefined, and starts at zero once the initial handshake is
+         * completed 
+         */
+        unsigned short r_epoch;
+        unsigned short w_epoch;
+
+        /* records being received in the current epoch */
+        DTLS1_BITMAP bitmap;
+
+        /* renegotiation starts a new set of sequence numbers */
+        DTLS1_BITMAP next_bitmap;
+
+        /* handshake message numbers */
+        unsigned short handshake_write_seq;
+        unsigned short next_handshake_write_seq;
+
+        unsigned short handshake_read_seq;
+
+        /* Received handshake records (processed and unprocessed) */
+        record_pqueue unprocessed_rcds;
+        record_pqueue processed_rcds;
+
+        /* Buffered handshake messages */
+        pqueue buffered_messages;
+
+        /* Buffered (sent) handshake records */
+        pqueue sent_messages;
+
+        unsigned int mtu; /* max wire packet size */
+
+        struct hm_header_st w_msg_hdr;
+        struct hm_header_st r_msg_hdr;
+
+        struct dtls1_timeout_st timeout;
+        
+        /* storage for Alert/Handshake protocol data received but not
+         * yet processed by ssl3_read_bytes: */
+        unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH];
+        unsigned int alert_fragment_len;
+        unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH];
+        unsigned int handshake_fragment_len;
+
+        unsigned int retransmitting;
+
+        } DTLS1_STATE;
+
+typedef struct dtls1_record_data_st
+        {
+        unsigned char *packet;
+        unsigned int   packet_length;
+        SSL3_BUFFER    rbuf;
+        SSL3_RECORD    rrec;
+        } DTLS1_RECORD_DATA;
+
+
+/* Timeout multipliers (timeout slice is defined in apps/timeouts.h */
+#define DTLS1_TMO_READ_COUNT                      2
+#define DTLS1_TMO_WRITE_COUNT                     2
+
+#define DTLS1_TMO_ALERT_COUNT                     12
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
+