--- /dev/null
+/* ssl/dtls1.h */\r
+/* \r
+ * DTLS implementation written by Nagendra Modadugu\r
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. \r
+ */\r
+/* ====================================================================\r
+ * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.\r
+ *\r
+ * Redistribution and use in source and binary forms, with or without\r
+ * modification, are permitted provided that the following conditions\r
+ * are met:\r
+ *\r
+ * 1. Redistributions of source code must retain the above copyright\r
+ * notice, this list of conditions and the following disclaimer. \r
+ *\r
+ * 2. Redistributions in binary form must reproduce the above copyright\r
+ * notice, this list of conditions and the following disclaimer in\r
+ * the documentation and/or other materials provided with the\r
+ * distribution.\r
+ *\r
+ * 3. All advertising materials mentioning features or use of this\r
+ * software must display the following acknowledgment:\r
+ * "This product includes software developed by the OpenSSL Project\r
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"\r
+ *\r
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to\r
+ * endorse or promote products derived from this software without\r
+ * prior written permission. For written permission, please contact\r
+ * openssl-core@OpenSSL.org.\r
+ *\r
+ * 5. Products derived from this software may not be called "OpenSSL"\r
+ * nor may "OpenSSL" appear in their names without prior written\r
+ * permission of the OpenSSL Project.\r
+ *\r
+ * 6. Redistributions of any form whatsoever must retain the following\r
+ * acknowledgment:\r
+ * "This product includes software developed by the OpenSSL Project\r
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"\r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY\r
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR\r
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\r
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\r
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\r
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,\r
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED\r
+ * OF THE POSSIBILITY OF SUCH DAMAGE.\r
+ * ====================================================================\r
+ *\r
+ * This product includes cryptographic software written by Eric Young\r
+ * (eay@cryptsoft.com). This product includes software written by Tim\r
+ * Hudson (tjh@cryptsoft.com).\r
+ *\r
+ */\r
+\r
+#ifndef HEADER_DTLS1_H \r
+#define HEADER_DTLS1_H \r
+\r
+#include <openssl/buffer.h>\r
+#include <openssl/pqueue.h>\r
+\r
+#ifdef __cplusplus\r
+extern "C" {\r
+#endif\r
+\r
+#define DTLS1_VERSION 0x0100\r
+#define DTLS1_VERSION_MAJOR 0x01\r
+#define DTLS1_VERSION_MINOR 0x00\r
+\r
+#define DTLS1_AD_MISSING_HANDSHAKE_MESSAGE 110\r
+\r
+/* lengths of messages */\r
+#define DTLS1_COOKIE_LENGTH 32\r
+\r
+#define DTLS1_RT_HEADER_LENGTH 13\r
+\r
+#define DTLS1_HM_HEADER_LENGTH 12\r
+\r
+#define DTLS1_HM_BAD_FRAGMENT -2\r
+#define DTLS1_HM_FRAGMENT_RETRY -3\r
+\r
+#define DTLS1_CCS_HEADER_LENGTH 3\r
+\r
+#define DTLS1_AL_HEADER_LENGTH 7\r
+\r
+\r
+typedef struct dtls1_bitmap_st\r
+ {\r
+ PQ_64BIT map;\r
+ unsigned long length; /* sizeof the bitmap in bits */\r
+ PQ_64BIT max_seq_num; /* max record number seen so far */\r
+ } DTLS1_BITMAP;\r
+\r
+struct hm_header_st\r
+ {\r
+ unsigned char type;\r
+ unsigned long msg_len;\r
+ unsigned short seq;\r
+ unsigned long frag_off;\r
+ unsigned long frag_len;\r
+ unsigned int is_ccs;\r
+ };\r
+\r
+struct ccs_header_st\r
+ {\r
+ unsigned char type;\r
+ unsigned short seq;\r
+ };\r
+\r
+struct dtls1_timeout_st\r
+ {\r
+ /* Number of read timeouts so far */\r
+ unsigned int read_timeouts;\r
+ \r
+ /* Number of write timeouts so far */\r
+ unsigned int write_timeouts;\r
+ \r
+ /* Number of alerts received so far */\r
+ unsigned int num_alerts;\r
+ };\r
+\r
+typedef struct record_pqueue_st\r
+ {\r
+ unsigned short epoch;\r
+ pqueue q;\r
+ } record_pqueue;\r
+\r
+typedef struct hm_fragment_st\r
+ {\r
+ struct hm_header_st msg_header;\r
+ unsigned char *fragment;\r
+ } hm_fragment;\r
+\r
+typedef struct dtls1_state_st\r
+ {\r
+ unsigned int send_cookie;\r
+ unsigned char cookie[DTLS1_COOKIE_LENGTH];\r
+ unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH];\r
+ unsigned int cookie_len;\r
+\r
+ /* \r
+ * The current data and handshake epoch. This is initially\r
+ * undefined, and starts at zero once the initial handshake is\r
+ * completed \r
+ */\r
+ unsigned short r_epoch;\r
+ unsigned short w_epoch;\r
+\r
+ /* records being received in the current epoch */\r
+ DTLS1_BITMAP bitmap;\r
+\r
+ /* renegotiation starts a new set of sequence numbers */\r
+ DTLS1_BITMAP next_bitmap;\r
+\r
+ /* handshake message numbers */\r
+ unsigned short handshake_write_seq;\r
+ unsigned short next_handshake_write_seq;\r
+\r
+ unsigned short handshake_read_seq;\r
+\r
+ /* Received handshake records (processed and unprocessed) */\r
+ record_pqueue unprocessed_rcds;\r
+ record_pqueue processed_rcds;\r
+\r
+ /* Buffered handshake messages */\r
+ pqueue buffered_messages;\r
+\r
+ /* Buffered (sent) handshake records */\r
+ pqueue sent_messages;\r
+\r
+ unsigned int mtu; /* max wire packet size */\r
+\r
+ struct hm_header_st w_msg_hdr;\r
+ struct hm_header_st r_msg_hdr;\r
+\r
+ struct dtls1_timeout_st timeout;\r
+ \r
+ /* storage for Alert/Handshake protocol data received but not\r
+ * yet processed by ssl3_read_bytes: */\r
+ unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH];\r
+ unsigned int alert_fragment_len;\r
+ unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH];\r
+ unsigned int handshake_fragment_len;\r
+\r
+ unsigned int retransmitting;\r
+\r
+ } DTLS1_STATE;\r
+\r
+typedef struct dtls1_record_data_st\r
+ {\r
+ unsigned char *packet;\r
+ unsigned int packet_length;\r
+ SSL3_BUFFER rbuf;\r
+ SSL3_RECORD rrec;\r
+ } DTLS1_RECORD_DATA;\r
+\r
+\r
+/* Timeout multipliers (timeout slice is defined in apps/timeouts.h */\r
+#define DTLS1_TMO_READ_COUNT 2\r
+#define DTLS1_TMO_WRITE_COUNT 2\r
+\r
+#define DTLS1_TMO_ALERT_COUNT 12\r
+\r
+#ifdef __cplusplus\r
+}\r
+#endif\r
+#endif\r
+\r
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