X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fd1_lib.c;h=2b066e01651e396715c1730ac4561db9148c362c;hp=fafc5c0bc63a5dd0e6bca874b4d6131b1e5f55ff;hb=0ebc965b9ca4352e407bb7cfa65ac235942117f6;hpb=7832d6ab1c56d1096a23c18a3b56fa3bfd3bed3b

diff --git a/ssl/d1_lib.c b/ssl/d1_lib.c
index fafc5c0bc6..2b066e0165 100644
--- a/ssl/d1_lib.c
+++ b/ssl/d1_lib.c
@@ -62,16 +62,18 @@
 #include <openssl/objects.h>
 #include "ssl_locl.h"
 
-#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)
+#if defined(OPENSSL_SYS_VMS)
 #include <sys/timeb.h>
 #endif
 
 static void get_current_time(struct timeval *t);
+static void dtls1_set_handshake_header(SSL *s, int type, unsigned long len);
+static int dtls1_handshake_write(SSL *s);
 const char dtls1_version_str[]="DTLSv1" OPENSSL_VERSION_PTEXT;
 int dtls1_listen(SSL *s, struct sockaddr *client);
 
 SSL3_ENC_METHOD DTLSv1_enc_data={
-    dtls1_enc,
+    	tls1_enc,
 	tls1_mac,
 	tls1_setup_key_block,
 	tls1_generate_master_secret,
@@ -82,6 +84,31 @@ SSL3_ENC_METHOD DTLSv1_enc_data={
 	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,
+	tls1_export_keying_material,
+	SSL_ENC_FLAG_DTLS|SSL_ENC_FLAG_EXPLICIT_IV,
+	DTLS1_HM_HEADER_LENGTH,
+	dtls1_set_handshake_header,
+	dtls1_handshake_write	
+	};
+
+SSL3_ENC_METHOD DTLSv1_2_enc_data={
+    	tls1_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,
+	tls1_export_keying_material,
+	SSL_ENC_FLAG_DTLS|SSL_ENC_FLAG_EXPLICIT_IV|SSL_ENC_FLAG_SIGALGS
+		|SSL_ENC_FLAG_SHA256_PRF|SSL_ENC_FLAG_TLS1_2_CIPHERS,
+	DTLS1_HM_HEADER_LENGTH,
+	dtls1_set_handshake_header,
+	dtls1_handshake_write	
 	};
 
 long dtls1_default_timeout(void)
@@ -133,15 +160,26 @@ static void dtls1_clear_queues(SSL *s)
 	{
     pitem *item = NULL;
     hm_fragment *frag = NULL;
-	
+	DTLS1_RECORD_DATA *rdata;
+
     while( (item = pqueue_pop(s->d1->unprocessed_rcds.q)) != NULL)
         {
+		rdata = (DTLS1_RECORD_DATA *) item->data;
+		if (rdata->rbuf.buf)
+			{
+			OPENSSL_free(rdata->rbuf.buf);
+			}
         OPENSSL_free(item->data);
         pitem_free(item);
         }
 
     while( (item = pqueue_pop(s->d1->processed_rcds.q)) != NULL)
         {
+		rdata = (DTLS1_RECORD_DATA *) item->data;
+		if (rdata->rbuf.buf)
+			{
+			OPENSSL_free(rdata->rbuf.buf);
+			}
         OPENSSL_free(item->data);
         pitem_free(item);
         }
@@ -184,6 +222,7 @@ void dtls1_free(SSL *s)
 	pqueue_free(s->d1->buffered_app_data.q);
 
 	OPENSSL_free(s->d1);
+	s->d1 = NULL;
 	}
 
 void dtls1_clear(SSL *s)
@@ -193,7 +232,8 @@ void dtls1_clear(SSL *s)
     pqueue buffered_messages;
 	pqueue sent_messages;
 	pqueue buffered_app_data;
-	
+	unsigned int mtu;
+
 	if (s->d1)
 		{
 		unprocessed_rcds = s->d1->unprocessed_rcds.q;
@@ -201,6 +241,7 @@ void dtls1_clear(SSL *s)
 		buffered_messages = s->d1->buffered_messages;
 		sent_messages = s->d1->sent_messages;
 		buffered_app_data = s->d1->buffered_app_data.q;
+		mtu = s->d1->mtu;
 
 		dtls1_clear_queues(s);
 
@@ -211,6 +252,11 @@ void dtls1_clear(SSL *s)
 			s->d1->cookie_len = sizeof(s->d1->cookie);
 			}
 
+		if (SSL_get_options(s) & SSL_OP_NO_QUERY_MTU)
+			{
+			s->d1->mtu = mtu;
+			}
+
 		s->d1->unprocessed_rcds.q = unprocessed_rcds;
 		s->d1->processed_rcds.q = processed_rcds;
 		s->d1->buffered_messages = buffered_messages;
@@ -221,8 +267,10 @@ void dtls1_clear(SSL *s)
 	ssl3_clear(s);
 	if (s->options & SSL_OP_CISCO_ANYCONNECT)
 		s->version=DTLS1_BAD_VER;
+	else if (s->method->version == DTLS_ANY_VERSION)
+		s->version=DTLS1_2_VERSION;
 	else
-		s->version=DTLS1_VERSION;
+		s->version=s->method->version;
 	}
 
 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg)
@@ -273,6 +321,15 @@ const SSL_CIPHER *dtls1_get_cipher(unsigned int u)
 
 void dtls1_start_timer(SSL *s)
 	{
+#ifndef OPENSSL_NO_SCTP
+	/* Disable timer for SCTP */
+	if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
+		{
+		memset(&(s->d1->next_timeout), 0, sizeof(struct timeval));
+		return;
+		}
+#endif
+
 	/* If timer is not set, initialize duration with 1 second */
 	if (s->d1->next_timeout.tv_sec == 0 && s->d1->next_timeout.tv_usec == 0)
 		{
@@ -363,6 +420,7 @@ void dtls1_double_timeout(SSL *s)
 void dtls1_stop_timer(SSL *s)
 	{
 	/* Reset everything */
+	memset(&(s->d1->timeout), 0, sizeof(struct dtls1_timeout_st));
 	memset(&(s->d1->next_timeout), 0, sizeof(struct timeval));
 	s->d1->timeout_duration = 1;
 	BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT, 0, &(s->d1->next_timeout));
@@ -370,10 +428,28 @@ void dtls1_stop_timer(SSL *s)
 	dtls1_clear_record_buffer(s);
 	}
 
-int dtls1_handle_timeout(SSL *s)
+int dtls1_check_timeout_num(SSL *s)
 	{
-	DTLS1_STATE *state;
+	s->d1->timeout.num_alerts++;
 
+	/* Reduce MTU after 2 unsuccessful retransmissions */
+	if (s->d1->timeout.num_alerts > 2)
+		{
+		s->d1->mtu = BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, NULL);		
+		}
+
+	if (s->d1->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT)
+		{
+		/* fail the connection, enough alerts have been sent */
+		SSLerr(SSL_F_DTLS1_CHECK_TIMEOUT_NUM,SSL_R_READ_TIMEOUT_EXPIRED);
+		return -1;
+		}
+
+	return 0;
+	}
+
+int dtls1_handle_timeout(SSL *s)
+	{
 	/* if no timer is expired, don't do anything */
 	if (!dtls1_is_timer_expired(s))
 		{
@@ -381,20 +457,23 @@ int dtls1_handle_timeout(SSL *s)
 		}
 
 	dtls1_double_timeout(s);
-	state = s->d1;
-	state->timeout.num_alerts++;
-	if ( state->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT)
+
+	if (dtls1_check_timeout_num(s) < 0)
+		return -1;
+
+	s->d1->timeout.read_timeouts++;
+	if (s->d1->timeout.read_timeouts > DTLS1_TMO_READ_COUNT)
 		{
-		/* fail the connection, enough alerts have been sent */
-		SSLerr(SSL_F_DTLS1_HANDLE_TIMEOUT,SSL_R_READ_TIMEOUT_EXPIRED);
-		return 0;
+		s->d1->timeout.read_timeouts = 1;
 		}
 
-	state->timeout.read_timeouts++;
-	if ( state->timeout.read_timeouts > DTLS1_TMO_READ_COUNT)
+#ifndef OPENSSL_NO_HEARTBEATS
+	if (s->tlsext_hb_pending)
 		{
-		state->timeout.read_timeouts = 1;
+		s->tlsext_hb_pending = 0;
+		return dtls1_heartbeat(s);
 		}
+#endif
 
 	dtls1_start_timer(s);
 	return dtls1_retransmit_buffered_messages(s);
@@ -402,11 +481,15 @@ int dtls1_handle_timeout(SSL *s)
 
 static void get_current_time(struct timeval *t)
 {
-#ifdef OPENSSL_SYS_WIN32
-	struct _timeb tb;
-	_ftime(&tb);
-	t->tv_sec = (long)tb.time;
-	t->tv_usec = (long)tb.millitm * 1000;
+#if defined(_WIN32)
+	SYSTEMTIME st;
+	union { unsigned __int64 ul; FILETIME ft; } now;
+
+	GetSystemTime(&st);
+	SystemTimeToFileTime(&st,&now.ft);
+	now.ul -= 116444736000000000UI64;	/* re-bias to 1/1/1970 */
+	t->tv_sec  = (long)(now.ul/10000000);
+	t->tv_usec = ((int)(now.ul%10000000))/10;
 #elif defined(OPENSSL_SYS_VMS)
 	struct timeb tb;
 	ftime(&tb);
@@ -430,3 +513,18 @@ int dtls1_listen(SSL *s, struct sockaddr *client)
 	(void) BIO_dgram_get_peer(SSL_get_rbio(s), client);
 	return 1;
 	}
+
+static void dtls1_set_handshake_header(SSL *s, int htype, unsigned long len)
+	{
+	unsigned char *p = (unsigned char *)s->init_buf->data;
+	dtls1_set_message_header(s, p, htype, len, 0, len);
+	s->init_num = (int)len + DTLS1_HM_HEADER_LENGTH;
+	s->init_off = 0;
+	/* Buffer the message to handle re-xmits */
+	dtls1_buffer_message(s, 0);
+	}
+
+static int dtls1_handshake_write(SSL *s)
+	{
+	return dtls1_do_write(s, SSL3_RT_HANDSHAKE);
+	}