From fef0b61e18b9c7475e4d6e67ddfc55db46573f4e Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Wed, 16 Jun 2010 16:17:11 +0000
Subject: Switched to openssl-1.0.0a

---
 openssl/ssl/d1_pkt.c | 44 +++++++++++++++++++++-----------------------
 1 file changed, 21 insertions(+), 23 deletions(-)

(limited to 'openssl/ssl/d1_pkt.c')

diff --git a/openssl/ssl/d1_pkt.c b/openssl/ssl/d1_pkt.c
index c9757e1d6..a5439d544 100644
--- a/openssl/ssl/d1_pkt.c
+++ b/openssl/ssl/d1_pkt.c
@@ -196,6 +196,9 @@ dtls1_copy_record(SSL *s, pitem *item)
     s->packet_length = rdata->packet_length;
     memcpy(&(s->s3->rbuf), &(rdata->rbuf), sizeof(SSL3_BUFFER));
     memcpy(&(s->s3->rrec), &(rdata->rrec), sizeof(SSL3_RECORD));
+	
+	/* Set proper sequence number for mac calculation */
+	memcpy(&(s->s3->read_sequence[2]), &(rdata->packet[5]), 6);
     
     return(1);
     }
@@ -414,7 +417,7 @@ dtls1_process_record(SSL *s)
 			goto err;
 
 		/* otherwise enc_err == -1 */
-		goto decryption_failed_or_bad_record_mac;
+		goto err;
 		}
 
 #ifdef TLS_DEBUG
@@ -444,7 +447,7 @@ printf("\n");
 			SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_PRE_MAC_LENGTH_TOO_LONG);
 			goto f_err;
 #else
-			goto decryption_failed_or_bad_record_mac;
+			goto err;
 #endif			
 			}
 		/* check the MAC for rr->input (it's in mac_size bytes at the tail) */
@@ -455,14 +458,14 @@ printf("\n");
 			SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_LENGTH_TOO_SHORT);
 			goto f_err;
 #else
-			goto decryption_failed_or_bad_record_mac;
+			goto err;
 #endif
 			}
 		rr->length-=mac_size;
 		i=s->method->ssl3_enc->mac(s,md,0);
 		if (i < 0 || memcmp(md,&(rr->data[rr->length]),mac_size) != 0)
 			{
-			goto decryption_failed_or_bad_record_mac;
+			goto err;
 			}
 		}
 
@@ -504,14 +507,6 @@ printf("\n");
 	dtls1_record_bitmap_update(s, &(s->d1->bitmap));/* Mark receipt of record. */
 	return(1);
 
-decryption_failed_or_bad_record_mac:
-	/* Separate 'decryption_failed' alert was introduced with TLS 1.0,
-	 * SSL 3.0 only has 'bad_record_mac'.  But unless a decryption
-	 * failure is directly visible from the ciphertext anyway,
-	 * we should not reveal which kind of error occured -- this
-	 * might become visible to an attacker (e.g. via logfile) */
-	al=SSL_AD_BAD_RECORD_MAC;
-	SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
 f_err:
 	ssl3_send_alert(s,SSL3_AL_FATAL,al);
 err:
@@ -544,8 +539,7 @@ int dtls1_get_record(SSL *s)
 
 	/* The epoch may have changed.  If so, process all the
 	 * pending records.  This is a non-blocking operation. */
-	if ( ! dtls1_process_buffered_records(s))
-            return 0;
+	dtls1_process_buffered_records(s);
 
 	/* if we're renegotiating, then there may be buffered records */
 	if (dtls1_get_processed_record(s))
@@ -667,21 +661,25 @@ again:
 	if (rr->length == 0) goto again;
 
 	/* If this record is from the next epoch (either HM or ALERT),
-	 * buffer it since it cannot be processed at this time. Records
-	 * from the next epoch are marked as received even though they
-	 * are not processed, so as to prevent any potential resource
-	 * DoS attack */
+	 * and a handshake is currently in progress, buffer it since it
+	 * cannot be processed at this time. */
 	if (is_next_epoch)
 		{
-		dtls1_record_bitmap_update(s, bitmap);
-		dtls1_buffer_record(s, &(s->d1->unprocessed_rcds), rr->seq_num);
+		if (SSL_in_init(s) || s->in_handshake)
+			{
+			dtls1_buffer_record(s, &(s->d1->unprocessed_rcds), rr->seq_num);
+			}
 		rr->length = 0;
 		s->packet_length = 0;
 		goto again;
 		}
 
-	if ( ! dtls1_process_record(s))
-		return(0);
+	if (!dtls1_process_record(s))
+		{
+		rr->length = 0;
+		s->packet_length = 0;  /* dump this record */
+		goto again;   /* get another record */
+		}
 
 	dtls1_clear_timeouts(s);  /* done waiting */
 	return(1);
@@ -809,7 +807,7 @@ start:
 		 * buffer the application data for later processing rather
 		 * than dropping the connection.
 		 */
-		dtls1_buffer_record(s, &(s->d1->buffered_app_data), 0);
+		dtls1_buffer_record(s, &(s->d1->buffered_app_data), rr->seq_num);
 		rr->length = 0;
 		goto start;
 		}
-- 
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