X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fdtls1.h;h=c6edbe39f9cc1e666db453ebfb67c086c2987dfb;hp=4543ef75bb25c25354aabbd08737d7f335b0f1af;hb=b45e874d7c4a8fdac7ec10cff43f21d02e75d511;hpb=480506bd49060f65c672af1f9de8968c51262125

diff --git a/ssl/dtls1.h b/ssl/dtls1.h
index 4543ef75bb..c6edbe39f9 100644
--- a/ssl/dtls1.h
+++ b/ssl/dtls1.h
@@ -57,24 +57,45 @@
  *
  */
 
-#ifndef HEADER_DTLS1_H 
-#define HEADER_DTLS1_H 
+#ifndef HEADER_DTLS1_H
+#define HEADER_DTLS1_H
 
 #include <openssl/buffer.h>
 #include <openssl/pqueue.h>
+#ifdef OPENSSL_SYS_VMS
+#include <resource.h>
+#include <sys/timeb.h>
+#endif
+#ifdef OPENSSL_SYS_WIN32
+/* Needed for struct timeval */
+#include <winsock.h>
+#elif defined(OPENSSL_SYS_NETWARE) && !defined(_WINSOCK2API_)
+#include <sys/timeval.h>
+#else
+#if defined(OPENSSL_SYS_VXWORKS)
+#include <sys/times.h>
+#else
+#include <sys/time.h>
+#endif
+#endif
 
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
-#define DTLS1_VERSION			0x0100
-#define DTLS1_VERSION_MAJOR		0x01
-#define DTLS1_VERSION_MINOR		0x00
+#define DTLS1_VERSION			0xFEFF
+#define DTLS1_BAD_VER			0x0100
+#define DTLS1_2_VERSION			0xFEFD
+/* Special value for method supporting multiple versions */
+#define DTLS_ANY_VERSION		0x1FFFF
 
+#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_COOKIE_LENGTH                     256
 
 #define DTLS1_RT_HEADER_LENGTH                  13
 
@@ -83,18 +104,42 @@ extern "C" {
 #define DTLS1_HM_BAD_FRAGMENT                   -2
 #define DTLS1_HM_FRAGMENT_RETRY                 -3
 
-#define DTLS1_CCS_HEADER_LENGTH                  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
+
+#ifndef OPENSSL_NO_SSL_INTERN
 
+#ifndef OPENSSL_NO_SCTP
+#define DTLS1_SCTP_AUTH_LABEL	"EXPORTER_DTLS_OVER_SCTP"
+#endif
 
 typedef struct dtls1_bitmap_st
 	{
-	unsigned long long map;
-	unsigned long length;     /* sizeof the bitmap in bits */
-	unsigned long long max_seq_num;  /* max record number seen so far */
+	unsigned long map;		/* track 32 packets on 32-bit systems
+					   and 64 - on 64-bit systems */
+	unsigned char max_seq_num[8];	/* max record number seen so far,
+					   64-bit value in big-endian
+					   encoding */
 	} DTLS1_BITMAP;
 
+struct dtls1_retransmit_state
+	{
+	EVP_CIPHER_CTX *enc_write_ctx;	/* cryptographic state */
+	EVP_MD_CTX *write_hash;			/* used for mac generation */
+#ifndef OPENSSL_NO_COMP
+	COMP_CTX *compress;				/* compression */
+#else
+	char *compress;	
+#endif
+	SSL_SESSION *session;
+	unsigned short epoch;
+	};
+
 struct hm_header_st
 	{
 	unsigned char type;
@@ -103,6 +148,7 @@ struct hm_header_st
 	unsigned long frag_off;
 	unsigned long frag_len;
 	unsigned int is_ccs;
+	struct dtls1_retransmit_state saved_retransmit_state;
 	};
 
 struct ccs_header_st
@@ -133,6 +179,7 @@ typedef struct hm_fragment_st
 	{
 	struct hm_header_st msg_header;
 	unsigned char *fragment;
+	unsigned char *reassembly;
 	} hm_fragment;
 
 typedef struct dtls1_state_st
@@ -162,8 +209,8 @@ typedef struct dtls1_state_st
 
 	unsigned short handshake_read_seq;
 
-	/* only matters for handshake messages */  
-	unsigned long long next_expected_seq_num; 
+	/* save last sequence number for retransmissions */
+	unsigned char last_write_sequence[8];
 
 	/* Received handshake records (processed and unprocessed) */
 	record_pqueue unprocessed_rcds;
@@ -175,13 +222,29 @@ typedef struct dtls1_state_st
 	/* Buffered (sent) handshake records */
 	pqueue sent_messages;
 
-	unsigned int mtu; /* max wire packet size */
+	/* Buffered application records.
+	 * Only for records between CCS and Finished
+	 * to prevent either protocol violation or
+	 * unnecessary message loss.
+	 */
+	record_pqueue buffered_app_data;
+
+	/* Is set when listening for new connections with dtls1_listen() */
+	unsigned int listen;
+
+	unsigned int mtu; /* max DTLS packet size */
 
 	struct hm_header_st w_msg_hdr;
 	struct hm_header_st r_msg_hdr;
 
 	struct dtls1_timeout_st timeout;
-	
+
+	/* Indicates when the last handshake msg or heartbeat sent will timeout */
+	struct timeval next_timeout;
+
+	/* Timeout duration */
+	unsigned short timeout_duration;
+
 	/* storage for Alert/Handshake protocol data received but not
 	 * yet processed by ssl3_read_bytes: */
 	unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH];
@@ -190,6 +253,14 @@ typedef struct dtls1_state_st
 	unsigned int handshake_fragment_len;
 
 	unsigned int retransmitting;
+	unsigned int change_cipher_spec_ok;
+
+#ifndef OPENSSL_NO_SCTP
+	/* used when SSL_ST_XX_FLUSH is entered */
+	int next_state;
+
+	int shutdown_received;
+#endif
 
 	} DTLS1_STATE;
 
@@ -199,8 +270,12 @@ typedef struct dtls1_record_data_st
 	unsigned int   packet_length;
 	SSL3_BUFFER    rbuf;
 	SSL3_RECORD    rrec;
+#ifndef OPENSSL_NO_SCTP
+	struct bio_dgram_sctp_rcvinfo recordinfo;
+#endif
 	} DTLS1_RECORD_DATA;
 
+#endif
 
 /* Timeout multipliers (timeout slice is defined in apps/timeouts.h */
 #define DTLS1_TMO_READ_COUNT                      2