X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fd1_lib.c;h=fafc5c0bc63a5dd0e6bca874b4d6131b1e5f55ff;hp=8039740555f2b388168a3250a277da20e237a62d;hb=7832d6ab1c56d1096a23c18a3b56fa3bfd3bed3b;hpb=b972fbaa8f96d3774d3543d96e232ae50131bb9e

diff --git a/ssl/d1_lib.c b/ssl/d1_lib.c
index 8039740555..fafc5c0bc6 100644
--- a/ssl/d1_lib.c
+++ b/ssl/d1_lib.c
@@ -62,12 +62,13 @@
 #include <openssl/objects.h>
 #include "ssl_locl.h"
 
-#ifdef OPENSSL_SYS_WIN32
+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)
 #include <sys/timeb.h>
 #endif
 
 static void get_current_time(struct timeval *t);
 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,
@@ -128,26 +129,22 @@ int dtls1_new(SSL *s)
 	return(1);
 	}
 
-void dtls1_free(SSL *s)
+static void dtls1_clear_queues(SSL *s)
 	{
     pitem *item = NULL;
     hm_fragment *frag = NULL;
-
-	ssl3_free(s);
-
+	
     while( (item = pqueue_pop(s->d1->unprocessed_rcds.q)) != NULL)
         {
         OPENSSL_free(item->data);
         pitem_free(item);
         }
-    pqueue_free(s->d1->unprocessed_rcds.q);
 
     while( (item = pqueue_pop(s->d1->processed_rcds.q)) != NULL)
         {
         OPENSSL_free(item->data);
         pitem_free(item);
         }
-    pqueue_free(s->d1->processed_rcds.q);
 
     while( (item = pqueue_pop(s->d1->buffered_messages)) != NULL)
         {
@@ -156,7 +153,6 @@ void dtls1_free(SSL *s)
         OPENSSL_free(frag);
         pitem_free(item);
         }
-    pqueue_free(s->d1->buffered_messages);
 
     while ( (item = pqueue_pop(s->d1->sent_messages)) != NULL)
         {
@@ -165,7 +161,6 @@ void dtls1_free(SSL *s)
         OPENSSL_free(frag);
         pitem_free(item);
         }
-	pqueue_free(s->d1->sent_messages);
 
 	while ( (item = pqueue_pop(s->d1->buffered_app_data.q)) != NULL)
 		{
@@ -174,6 +169,18 @@ void dtls1_free(SSL *s)
 		OPENSSL_free(frag);
 		pitem_free(item);
 		}
+	}
+
+void dtls1_free(SSL *s)
+	{
+	ssl3_free(s);
+
+	dtls1_clear_queues(s);
+
+    pqueue_free(s->d1->unprocessed_rcds.q);
+    pqueue_free(s->d1->processed_rcds.q);
+    pqueue_free(s->d1->buffered_messages);
+	pqueue_free(s->d1->sent_messages);
 	pqueue_free(s->d1->buffered_app_data.q);
 
 	OPENSSL_free(s->d1);
@@ -181,6 +188,36 @@ void dtls1_free(SSL *s)
 
 void dtls1_clear(SSL *s)
 	{
+    pqueue unprocessed_rcds;
+    pqueue processed_rcds;
+    pqueue buffered_messages;
+	pqueue sent_messages;
+	pqueue buffered_app_data;
+	
+	if (s->d1)
+		{
+		unprocessed_rcds = s->d1->unprocessed_rcds.q;
+		processed_rcds = s->d1->processed_rcds.q;
+		buffered_messages = s->d1->buffered_messages;
+		sent_messages = s->d1->sent_messages;
+		buffered_app_data = s->d1->buffered_app_data.q;
+
+		dtls1_clear_queues(s);
+
+		memset(s->d1, 0, sizeof(*(s->d1)));
+
+		if (s->server)
+			{
+			s->d1->cookie_len = sizeof(s->d1->cookie);
+			}
+
+		s->d1->unprocessed_rcds.q = unprocessed_rcds;
+		s->d1->processed_rcds.q = processed_rcds;
+		s->d1->buffered_messages = buffered_messages;
+		s->d1->sent_messages = sent_messages;
+		s->d1->buffered_app_data.q = buffered_app_data;
+		}
+
 	ssl3_clear(s);
 	if (s->options & SSL_OP_CISCO_ANYCONNECT)
 		s->version=DTLS1_BAD_VER;
@@ -203,6 +240,9 @@ long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg)
 	case DTLS_CTRL_HANDLE_TIMEOUT:
 		ret = dtls1_handle_timeout(s);
 		break;
+	case DTLS_CTRL_LISTEN:
+		ret = dtls1_listen(s, parg);
+		break;
 
 	default:
 		ret = ssl3_ctrl(s, cmd, larg, parg);
@@ -279,6 +319,16 @@ struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft)
 		timeleft->tv_usec += 1000000;
 		}
 
+	/* If remaining time is less than 15 ms, set it to 0
+	 * to prevent issues because of small devergences with
+	 * socket timeouts.
+	 */
+	if (timeleft->tv_sec == 0 && timeleft->tv_usec < 15000)
+		{
+		memset(timeleft, 0, sizeof(struct timeval));
+		}
+	
+
 	return timeleft;
 	}
 
@@ -316,6 +366,8 @@ void dtls1_stop_timer(SSL *s)
 	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));
+	/* Clear retransmission buffer */
+	dtls1_clear_record_buffer(s);
 	}
 
 int dtls1_handle_timeout(SSL *s)
@@ -334,7 +386,7 @@ int dtls1_handle_timeout(SSL *s)
 	if ( state->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT)
 		{
 		/* fail the connection, enough alerts have been sent */
-		SSLerr(SSL_F_DTLS1_READ_FAILED,SSL_R_READ_TIMEOUT_EXPIRED);
+		SSLerr(SSL_F_DTLS1_HANDLE_TIMEOUT,SSL_R_READ_TIMEOUT_EXPIRED);
 		return 0;
 		}
 
@@ -364,3 +416,17 @@ static void get_current_time(struct timeval *t)
 	gettimeofday(t, NULL);
 #endif
 }
+
+int dtls1_listen(SSL *s, struct sockaddr *client)
+	{
+	int ret;
+
+	SSL_set_options(s, SSL_OP_COOKIE_EXCHANGE);
+	s->d1->listen = 1;
+
+	ret = SSL_accept(s);
+	if (ret <= 0) return ret;
+	
+	(void) BIO_dgram_get_peer(SSL_get_rbio(s), client);
+	return 1;
+	}