1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* ssl/dtls1.h */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DTLS implementation written by Nagendra Modadugu 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* ==================================================================== 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the above copyright 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the documentation and/or other materials provided with the 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * distribution. 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * software must display the following acknowledgment: 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software developed by the OpenSSL Project 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * endorse or promote products derived from this software without 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * prior written permission. For written permission, please contact 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * openssl-core@OpenSSL.org. 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5. Products derived from this software may not be called "OpenSSL" 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * nor may "OpenSSL" appear in their names without prior written 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * permission of the OpenSSL Project. 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 6. Redistributions of any form whatsoever must retain the following 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * acknowledgment: 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software developed by the OpenSSL Project 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OF THE POSSIBILITY OF SUCH DAMAGE. 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ==================================================================== 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This product includes cryptographic software written by Eric Young 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * (eay@cryptsoft.com). This product includes software written by Tim 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Hudson (tjh@cryptsoft.com). 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef HEADER_DTLS1_H 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define HEADER_DTLS1_H 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/buffer.h> 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/pqueue.h> 6598d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#ifdef OPENSSL_SYS_VMS 6698d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#include <resource.h> 6798d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#include <sys/timeb.h> 6898d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#endif 6998d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#ifdef OPENSSL_SYS_WIN32 7098d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom/* Needed for struct timeval */ 7198d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#include <winsock.h> 7298d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#elif defined(OPENSSL_SYS_NETWARE) && !defined(_WINSOCK2API_) 7398d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#include <sys/timeval.h> 7498d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#else 7598d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#include <sys/time.h> 7698d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#endif 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef __cplusplus 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectextern "C" { 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_VERSION 0xFEFF 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_BAD_VER 0x0100 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 85e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#if 0 86e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu/* this alert description is not specified anywhere... */ 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_AD_MISSING_HANDSHAKE_MESSAGE 110 88e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#endif 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* lengths of messages */ 9198d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#define DTLS1_COOKIE_LENGTH 256 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_RT_HEADER_LENGTH 13 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_HM_HEADER_LENGTH 12 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_HM_BAD_FRAGMENT -2 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_HM_FRAGMENT_RETRY -3 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_CCS_HEADER_LENGTH 1 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 102e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_AL_HEADER_LENGTH 7 104e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#else 105e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#define DTLS1_AL_HEADER_LENGTH 2 106e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#endif 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 108392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifndef OPENSSL_NO_SSL_INTERN 109392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 110392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifndef OPENSSL_NO_SCTP 111392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP" 112392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecttypedef struct dtls1_bitmap_st 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 116221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom unsigned long map; /* track 32 packets on 32-bit systems 117221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom and 64 - on 64-bit systems */ 118221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom unsigned char max_seq_num[8]; /* max record number seen so far, 119221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 64-bit value in big-endian 120221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom encoding */ 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } DTLS1_BITMAP; 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 12398d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstromstruct dtls1_retransmit_state 12498d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom { 12598d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */ 126221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVP_MD_CTX *write_hash; /* used for mac generation */ 12798d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#ifndef OPENSSL_NO_COMP 12898d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom COMP_CTX *compress; /* compression */ 12998d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#else 13098d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom char *compress; 13198d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom#endif 13298d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom SSL_SESSION *session; 13398d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom unsigned short epoch; 13498d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom }; 13598d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstruct hm_header_st 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char type; 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned long msg_len; 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short seq; 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned long frag_off; 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned long frag_len; 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int is_ccs; 14498d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom struct dtls1_retransmit_state saved_retransmit_state; 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project }; 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstruct ccs_header_st 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char type; 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short seq; 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project }; 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstruct dtls1_timeout_st 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Number of read timeouts so far */ 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int read_timeouts; 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Number of write timeouts so far */ 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int write_timeouts; 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Number of alerts received so far */ 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int num_alerts; 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project }; 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecttypedef struct record_pqueue_st 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short epoch; 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pqueue q; 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } record_pqueue; 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecttypedef struct hm_fragment_st 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project struct hm_header_st msg_header; 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *fragment; 1753d3a1b8fcf46ca3bdb3d8f09acd6ef604624a30dBrian Carlstrom unsigned char *reassembly; 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } hm_fragment; 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecttypedef struct dtls1_state_st 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int send_cookie; 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char cookie[DTLS1_COOKIE_LENGTH]; 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char rcvd_cookie[DTLS1_COOKIE_LENGTH]; 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int cookie_len; 184656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 185656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* 186656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The current data and handshake epoch. This is initially 187656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * undefined, and starts at zero once the initial handshake is 188656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * completed 189656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 190656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short r_epoch; 191656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short w_epoch; 192656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 193656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* records being received in the current epoch */ 194656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DTLS1_BITMAP bitmap; 195656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 196656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* renegotiation starts a new set of sequence numbers */ 197656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DTLS1_BITMAP next_bitmap; 198656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 199656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* handshake message numbers */ 200656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short handshake_write_seq; 201656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short next_handshake_write_seq; 202656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 203656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned short handshake_read_seq; 204656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 20598d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom /* save last sequence number for retransmissions */ 20698d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom unsigned char last_write_sequence[8]; 20798d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom 208656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Received handshake records (processed and unprocessed) */ 209656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project record_pqueue unprocessed_rcds; 210656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project record_pqueue processed_rcds; 211656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 212656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Buffered handshake messages */ 213656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pqueue buffered_messages; 214656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 215656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* Buffered (sent) handshake records */ 216656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project pqueue sent_messages; 217656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 21898d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom /* Buffered application records. 21998d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom * Only for records between CCS and Finished 22098d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom * to prevent either protocol violation or 22198d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom * unnecessary message loss. 22298d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom */ 22398d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom record_pqueue buffered_app_data; 22498d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom 22598d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom /* Is set when listening for new connections with dtls1_listen() */ 22698d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom unsigned int listen; 22798d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom 22898d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom unsigned int mtu; /* max DTLS packet size */ 229656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 230656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project struct hm_header_st w_msg_hdr; 231656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project struct hm_header_st r_msg_hdr; 232656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 233656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project struct dtls1_timeout_st timeout; 23498d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom 235392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom /* Indicates when the last handshake msg or heartbeat sent will timeout */ 23698d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom struct timeval next_timeout; 23798d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom 23898d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom /* Timeout duration */ 23998d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom unsigned short timeout_duration; 24098d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom 241656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* storage for Alert/Handshake protocol data received but not 242656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * yet processed by ssl3_read_bytes: */ 243656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH]; 244656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int alert_fragment_len; 245656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char handshake_fragment[DTLS1_HM_HEADER_LENGTH]; 246656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int handshake_fragment_len; 247656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 248656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int retransmitting; 24998d58bb80c64b02a33662f0ea80351d4a1535267Brian Carlstrom unsigned int change_cipher_spec_ok; 250656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 251392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifndef OPENSSL_NO_SCTP 252392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom /* used when SSL_ST_XX_FLUSH is entered */ 253392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom int next_state; 254392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 255392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom int shutdown_received; 256392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 257392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 258656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } DTLS1_STATE; 259656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 260656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projecttypedef struct dtls1_record_data_st 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *packet; 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int packet_length; 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project SSL3_BUFFER rbuf; 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project SSL3_RECORD rrec; 266392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifndef OPENSSL_NO_SCTP 267392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom struct bio_dgram_sctp_rcvinfo recordinfo; 268392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } DTLS1_RECORD_DATA; 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 271392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Timeout multipliers (timeout slice is defined in apps/timeouts.h */ 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_TMO_READ_COUNT 2 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_TMO_WRITE_COUNT 2 276656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DTLS1_TMO_ALERT_COUNT 12 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef __cplusplus 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 283656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 284