Import OpenSSL 0.9.8p.

20 files changed, 328 insertions, 169 deletions

diff --git a/ssl/d1_both.c b/ssl/d1_both.c
index 0a5c08d..920fb1f 100644
--- a/ssl/d1_both.c
+++ b/ssl/d1_both.c
@@ -123,6 +123,37 @@
 #include <openssl/evp.h>
 #include <openssl/x509.h>
 
+#define RSMBLY_BITMASK_SIZE(msg_len) (((msg_len) + 7) / 8)
+
+#define RSMBLY_BITMASK_MARK(bitmask, start, end) { \
+			if ((end) - (start) <= 8) { \
+				long ii; \
+				for (ii = (start); ii < (end); ii++) bitmask[((ii) >> 3)] |= (1 << ((ii) & 7)); \
+			} else { \
+				long ii; \
+				bitmask[((start) >> 3)] |= bitmask_start_values[((start) & 7)]; \
+				for (ii = (((start) >> 3) + 1); ii < ((((end) - 1)) >> 3); ii++) bitmask[ii] = 0xff; \
+				bitmask[(((end) - 1) >> 3)] |= bitmask_end_values[((end) & 7)]; \
+			} }
+
+#define RSMBLY_BITMASK_IS_COMPLETE(bitmask, msg_len, is_complete) { \
+			long ii; \
+			OPENSSL_assert((msg_len) > 0); \
+			is_complete = 1; \
+			if (bitmask[(((msg_len) - 1) >> 3)] != bitmask_end_values[((msg_len) & 7)]) is_complete = 0; \
+			if (is_complete) for (ii = (((msg_len) - 1) >> 3) - 1; ii >= 0 ; ii--) \
+				if (bitmask[ii] != 0xff) { is_complete = 0; break; } }
+
+#if 0
+#define RSMBLY_BITMASK_PRINT(bitmask, msg_len) { \
+			long ii; \
+			printf("bitmask: "); for (ii = 0; ii < (msg_len); ii++) \
+			printf("%d ", (bitmask[ii >> 3] & (1 << (ii & 7))) >> (ii & 7)); \
+			printf("\n"); }
+#endif
+
+static unsigned char bitmask_start_values[] = {0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80};
+static unsigned char bitmask_end_values[]   = {0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f};
 
 /* XDTLS:  figure out the right values */
 static unsigned int g_probable_mtu[] = {1500 - 28, 512 - 28, 256 - 28};
@@ -140,10 +171,11 @@ static long dtls1_get_message_fragment(SSL *s, int st1, int stn,
 	long max, int *ok);
 
 static hm_fragment *
-dtls1_hm_fragment_new(unsigned long frag_len)
+dtls1_hm_fragment_new(unsigned long frag_len, int reassembly)
 	{
 	hm_fragment *frag = NULL;
 	unsigned char *buf = NULL;
+	unsigned char *bitmask = NULL;
 
 	frag = (hm_fragment *)OPENSSL_malloc(sizeof(hm_fragment));
 	if ( frag == NULL)
@@ -162,6 +194,21 @@ dtls1_hm_fragment_new(unsigned long frag_len)
 	/* zero length fragment gets zero frag->fragment */
 	frag->fragment = buf;
 
+	/* Initialize reassembly bitmask if necessary */
+	if (reassembly)
+		{
+		bitmask = (unsigned char *)OPENSSL_malloc(RSMBLY_BITMASK_SIZE(frag_len));
+		if (bitmask == NULL)
+			{
+			if (buf != NULL) OPENSSL_free(buf);
+			OPENSSL_free(frag);
+			return NULL;
+			}
+		memset(bitmask, 0, RSMBLY_BITMASK_SIZE(frag_len));
+		}
+
+	frag->reassembly = bitmask;
+
 	return frag;
 	}
 
@@ -169,6 +216,7 @@ static void
 dtls1_hm_fragment_free(hm_fragment *frag)
 	{
 	if (frag->fragment) OPENSSL_free(frag->fragment);
+	if (frag->reassembly) OPENSSL_free(frag->reassembly);
 	OPENSSL_free(frag);
 	}
 
@@ -363,6 +411,8 @@ long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
 	{
 	int i, al;
 	struct hm_header_st *msg_hdr;
+	unsigned char *p;
+	unsigned long msg_len;
 
 	/* s3->tmp is used to store messages that are unexpected, caused
 	 * by the absence of an optional handshake message */
@@ -382,76 +432,55 @@ long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
 		}
 
 	msg_hdr = &s->d1->r_msg_hdr;
-	do
-		{
-		if ( msg_hdr->frag_off == 0)
-			{
-			/* s->d1->r_message_header.msg_len = 0; */
-			memset(msg_hdr, 0x00, sizeof(struct hm_header_st));
-			}
+	memset(msg_hdr, 0x00, sizeof(struct hm_header_st));
 
-		i = dtls1_get_message_fragment(s, st1, stn, max, ok);
-		if ( i == DTLS1_HM_BAD_FRAGMENT ||
-			i == DTLS1_HM_FRAGMENT_RETRY)  /* bad fragment received */
-			continue;
-		else if ( i <= 0 && !*ok)
-			return i;
+again:
+	i = dtls1_get_message_fragment(s, st1, stn, max, ok);
+	if ( i == DTLS1_HM_BAD_FRAGMENT ||
+		i == DTLS1_HM_FRAGMENT_RETRY)  /* bad fragment received */
+		goto again;
+	else if ( i <= 0 && !*ok)
+		return i;
 
-		/* Note that s->init_sum is used as a counter summing
-		 * up fragments' lengths: as soon as they sum up to
-		 * handshake packet length, we assume we have got all
-		 * the fragments. Overlapping fragments would cause
-		 * premature termination, so we don't expect overlaps.
-		 * Well, handling overlaps would require something more
-		 * drastic. Indeed, as it is now there is no way to
-		 * tell if out-of-order fragment from the middle was
-		 * the last. '>=' is the best/least we can do to control
-		 * the potential damage caused by malformed overlaps. */
-		if ((unsigned int)s->init_num >= msg_hdr->msg_len)
-			{
-			unsigned char *p = (unsigned char *)s->init_buf->data;
-			unsigned long msg_len = msg_hdr->msg_len;
-
-			/* reconstruct message header as if it was
-			 * sent in single fragment */
-			*(p++) = msg_hdr->type;
-			l2n3(msg_len,p);
-			s2n (msg_hdr->seq,p);
-			l2n3(0,p);
-			l2n3(msg_len,p);
-			if (s->client_version != DTLS1_BAD_VER)
-				p       -= DTLS1_HM_HEADER_LENGTH,
-				msg_len += DTLS1_HM_HEADER_LENGTH;
-
-			ssl3_finish_mac(s, p, msg_len);
-			if (s->msg_callback)
-				s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
-					p, msg_len,
-					s, s->msg_callback_arg);
-
-			memset(msg_hdr, 0x00, sizeof(struct hm_header_st));
-
-			s->d1->handshake_read_seq++;
-			/* we just read a handshake message from the other side:
-			 * this means that we don't need to retransmit of the
-			 * buffered messages.  
-			 * XDTLS: may be able clear out this
-			 * buffer a little sooner (i.e if an out-of-order
-			 * handshake message/record is received at the record
-			 * layer.  
-			 * XDTLS: exception is that the server needs to
-			 * know that change cipher spec and finished messages
-			 * have been received by the client before clearing this
-			 * buffer.  this can simply be done by waiting for the
-			 * first data  segment, but is there a better way?  */
-			dtls1_clear_record_buffer(s);
-
-			s->init_msg = s->init_buf->data + DTLS1_HM_HEADER_LENGTH;
-			return s->init_num;
-			}
-		else
-			msg_hdr->frag_off = i;
-		} while(1) ;
+	p = (unsigned char *)s->init_buf->data;
+	msg_len = msg_hdr->msg_len;
+
+	/* reconstruct message header */
+	*(p++) = msg_hdr->type;
+	l2n3(msg_len,p);
+	s2n (msg_hdr->seq,p);
+	l2n3(0,p);
+	l2n3(msg_len,p);
+	if (s->version != DTLS1_BAD_VER) {
+		p       -= DTLS1_HM_HEADER_LENGTH;
+		msg_len += DTLS1_HM_HEADER_LENGTH;
+	}
+
+	ssl3_finish_mac(s, p, msg_len);
+	if (s->msg_callback)
+		s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
+			p, msg_len,
+			s, s->msg_callback_arg);
+
+	memset(msg_hdr, 0x00, sizeof(struct hm_header_st));
+
+	s->d1->handshake_read_seq++;
+	/* we just read a handshake message from the other side:
+	 * this means that we don't need to retransmit of the
+	 * buffered messages.  
+	 * XDTLS: may be able clear out this
+	 * buffer a little sooner (i.e if an out-of-order
+	 * handshake message/record is received at the record
+	 * layer.  
+	 * XDTLS: exception is that the server needs to
+	 * know that change cipher spec and finished messages
+	 * have been received by the client before clearing this
+	 * buffer.  this can simply be done by waiting for the
+	 * first data  segment, but is there a better way?  */
+	dtls1_clear_record_buffer(s);
+
+	s->init_msg = s->init_buf->data + DTLS1_HM_HEADER_LENGTH;
+	return s->init_num;
 
 f_err:
 	ssl3_send_alert(s,SSL3_AL_FATAL,al);
@@ -527,6 +556,10 @@ dtls1_retrieve_buffered_fragment(SSL *s, long max, int *ok)
 		return 0;
 
 	frag = (hm_fragment *)item->data;
+	
+	/* Don't return if reassembly still in progress */
+	if (frag->reassembly != NULL)
+		return 0;
 
 	if ( s->d1->handshake_read_seq == frag->msg_header.seq)
 		{
@@ -562,6 +595,109 @@ dtls1_retrieve_buffered_fragment(SSL *s, long max, int *ok)
 
 
 static int
+dtls1_reassemble_fragment(SSL *s, struct hm_header_st* msg_hdr, int *ok)
+	{
+	hm_fragment *frag = NULL;
+	pitem *item = NULL;
+	int i = -1, is_complete;
+	PQ_64BIT seq64;
+	unsigned long frag_len = msg_hdr->frag_len, max_len;
+
+	if ((msg_hdr->frag_off+frag_len) > msg_hdr->msg_len)
+		goto err;
+
+	/* Determine maximum allowed message size. Depends on (user set)
+	 * maximum certificate length, but 16k is minimum.
+	 */
+	if (DTLS1_HM_HEADER_LENGTH + SSL3_RT_MAX_ENCRYPTED_LENGTH < s->max_cert_list)
+		max_len = s->max_cert_list;
+	else
+		max_len = DTLS1_HM_HEADER_LENGTH + SSL3_RT_MAX_ENCRYPTED_LENGTH;
+
+	if ((msg_hdr->frag_off+frag_len) > max_len)
+		goto err;
+
+	/* Try to find item in queue */
+	pq_64bit_init(&seq64);
+	pq_64bit_assign_word(&seq64, msg_hdr->seq);
+	item = pqueue_find(s->d1->buffered_messages, seq64);
+	pq_64bit_free(&seq64);
+
+	if (item == NULL)
+		{
+		frag = dtls1_hm_fragment_new(msg_hdr->msg_len, 1);
+		if ( frag == NULL)
+			goto err;
+		memcpy(&(frag->msg_header), msg_hdr, sizeof(*msg_hdr));
+		frag->msg_header.frag_len = frag->msg_header.msg_len;
+		frag->msg_header.frag_off = 0;
+		}
+	else
+		frag = (hm_fragment*) item->data;
+
+	/* If message is already reassembled, this must be a
+	 * retransmit and can be dropped.
+	 */
+	if (frag->reassembly == NULL)
+		{
+		unsigned char devnull [256];
+
+		while (frag_len)
+			{
+			i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
+				devnull,
+				frag_len>sizeof(devnull)?sizeof(devnull):frag_len,0);
+			if (i<=0) goto err;
+			frag_len -= i;
+			}
+		return DTLS1_HM_FRAGMENT_RETRY;
+		}
+
+	/* read the body of the fragment (header has already been read */
+	i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
+		frag->fragment + msg_hdr->frag_off,frag_len,0);
+	if (i<=0 || (unsigned long)i!=frag_len)
+		goto err;
+
+	RSMBLY_BITMASK_MARK(frag->reassembly, (long)msg_hdr->frag_off,
+	                    (long)(msg_hdr->frag_off + frag_len));
+
+	RSMBLY_BITMASK_IS_COMPLETE(frag->reassembly, (long)msg_hdr->msg_len,
+	                           is_complete);
+
+	if (is_complete)
+		{
+		OPENSSL_free(frag->reassembly);
+		frag->reassembly = NULL;
+		}
+
+	if (item == NULL)
+		{
+		pq_64bit_init(&seq64);
+		pq_64bit_assign_word(&seq64, msg_hdr->seq);
+		item = pitem_new(seq64, frag);
+		pq_64bit_free(&seq64);
+
+		if (item == NULL)
+			{
+			goto err;
+			i = -1;
+			}
+
+		pqueue_insert(s->d1->buffered_messages, item);
+		}
+
+	return DTLS1_HM_FRAGMENT_RETRY;
+
+err:
+	if (frag != NULL) dtls1_hm_fragment_free(frag);
+	if (item != NULL) OPENSSL_free(item);
+	*ok = 0;
+	return i;
+	}
+
+
+static int
 dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok)
 {
 	int i=-1;
@@ -578,7 +714,13 @@ dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok)
 	pq_64bit_assign_word(&seq64, msg_hdr->seq);
 	item = pqueue_find(s->d1->buffered_messages, seq64);
 	pq_64bit_free(&seq64);
-	
+
+	/* If we already have an entry and this one is a fragment,
+	 * don't discard it and rather try to reassemble it.
+	 */
+	if (item != NULL && frag_len < msg_hdr->msg_len)
+		item = NULL;
+
 	/* Discard the message if sequence number was already there, is
 	 * too far in the future, already in the queue or if we received
 	 * a FINISHED before the SERVER_HELLO, which then must be a stale
@@ -599,20 +741,25 @@ dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok)
 			frag_len -= i;
 			}
 		}
+	else
+		{
+		if (frag_len && frag_len < msg_hdr->msg_len)
+			return dtls1_reassemble_fragment(s, msg_hdr, ok);
 
-	if (frag_len)
-	{
-		frag = dtls1_hm_fragment_new(frag_len);
+		frag = dtls1_hm_fragment_new(frag_len, 0);
 		if ( frag == NULL)
 			goto err;
 
 		memcpy(&(frag->msg_header), msg_hdr, sizeof(*msg_hdr));
 
-		/* read the body of the fragment (header has already been read) */
-		i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
-			frag->fragment,frag_len,0);
-		if (i<=0 || (unsigned long)i!=frag_len)
-			goto err;
+		if (frag_len)
+			{
+			/* read the body of the fragment (header has already been read) */
+			i = s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,
+				frag->fragment,frag_len,0);
+			if (i<=0 || (unsigned long)i!=frag_len)
+				goto err;
+			}
 
 		pq_64bit_init(&seq64);
 		pq_64bit_assign_word(&seq64, msg_hdr->seq);
@@ -623,7 +770,7 @@ dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok)
 			goto err;
 
 		pqueue_insert(s->d1->buffered_messages, item);
-	}
+		}
 
 	return DTLS1_HM_FRAGMENT_RETRY;
 
@@ -639,14 +786,14 @@ static long
 dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
 	{
 	unsigned char wire[DTLS1_HM_HEADER_LENGTH];
-	unsigned long l, frag_off, frag_len;
+	unsigned long len, frag_off, frag_len;
 	int i,al;
 	struct hm_header_st msg_hdr;
 
 	/* see if we have the required fragment already */
 	if ((frag_len = dtls1_retrieve_buffered_fragment(s,max,ok)) || *ok)
 		{
-		if (*ok)	s->init_num += frag_len;
+		if (*ok)	s->init_num = frag_len;
 		return frag_len;
 		}
 
@@ -671,10 +818,13 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
 	if ( msg_hdr.seq != s->d1->handshake_read_seq)
 		return dtls1_process_out_of_seq_message(s, &msg_hdr, ok);
 
-	l = msg_hdr.msg_len;
+	len = msg_hdr.msg_len;
 	frag_off = msg_hdr.frag_off;
 	frag_len = msg_hdr.frag_len;
 
+	if (frag_len && frag_len < len)
+		return dtls1_reassemble_fragment(s, &msg_hdr, ok);
+
 	if (!s->server && s->d1->r_msg_hdr.frag_off == 0 &&
 		wire[0] == SSL3_MT_HELLO_REQUEST)
 		{
@@ -734,7 +884,7 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
 	 * s->init_buf->data, but as a counter summing up fragments'
 	 * lengths: as soon as they sum up to handshake packet
 	 * length, we assume we have got all the fragments. */
-	s->init_num += frag_len;
+	s->init_num = frag_len;
 	return frag_len;
 
 f_err:
@@ -888,6 +1038,8 @@ unsigned long dtls1_output_cert_chain(SSL *s, X509 *x)
   			}
   
 		X509_verify_cert(&xs_ctx);
+		/* Don't leave errors in the queue */
+		ERR_clear_error();
 		for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
   			{
 			x = sk_X509_value(xs_ctx.chain, i);
@@ -1010,7 +1162,7 @@ dtls1_buffer_message(SSL *s, int is_ccs)
 	 * been serialized */
 	OPENSSL_assert(s->init_off == 0);
 
-	frag = dtls1_hm_fragment_new(s->init_num);
+	frag = dtls1_hm_fragment_new(s->init_num, 0);
 
 	memcpy(frag->fragment, s->init_buf->data, s->init_num);
 
diff --git a/ssl/d1_clnt.c b/ssl/d1_clnt.c
index 223d116..0aa77ee 100644
--- a/ssl/d1_clnt.c
+++ b/ssl/d1_clnt.c
@@ -144,7 +144,7 @@ IMPLEMENT_dtls1_meth_func(DTLSv1_client_method,
 int dtls1_connect(SSL *s)
 	{
 	BUF_MEM *buf=NULL;
-	unsigned long Time=(unsigned long)time(NULL),l;
+	unsigned long Time=(unsigned long)time(NULL);
 	void (*cb)(const SSL *ssl,int type,int val)=NULL;
 	int ret= -1;
 	int new_state,state,skip=0;;
@@ -374,7 +374,6 @@ int dtls1_connect(SSL *s)
 			dtls1_start_timer(s);
 			ret=dtls1_send_client_key_exchange(s);
 			if (ret <= 0) goto end;
-			l=s->s3->tmp.new_cipher->algorithms;
 			/* EAY EAY EAY need to check for DH fix cert
 			 * sent back */
 			/* For TLS, cert_req is set to 2, so a cert chain
diff --git a/ssl/d1_enc.c b/ssl/d1_enc.c
index 3dfa5ad..4a6c909 100644
--- a/ssl/d1_enc.c
+++ b/ssl/d1_enc.c
@@ -131,13 +131,11 @@ int dtls1_enc(SSL *s, int send)
 	SSL3_RECORD *rec;
 	EVP_CIPHER_CTX *ds;
 	unsigned long l;
-	int bs,i,ii,j,k,n=0;
+	int bs,i,ii,j,k;
 	const EVP_CIPHER *enc;
 
 	if (send)
 		{
-		if (s->write_hash != NULL)
-			n=EVP_MD_size(s->write_hash);
 		ds=s->enc_write_ctx;
 		rec= &(s->s3->wrec);
 		if (s->enc_write_ctx == NULL)
@@ -158,8 +156,6 @@ int dtls1_enc(SSL *s, int send)
 		}
 	else
 		{
-		if (s->read_hash != NULL)
-			n=EVP_MD_size(s->read_hash);
 		ds=s->enc_read_ctx;
 		rec= &(s->s3->rrec);
 		if (s->enc_read_ctx == NULL)
diff --git a/ssl/d1_lib.c b/ssl/d1_lib.c
index 63bfbac..54e1640 100644
--- a/ssl/d1_lib.c
+++ b/ssl/d1_lib.c
@@ -305,6 +305,16 @@ 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;
 	}
 
diff --git a/ssl/d1_pkt.c b/ssl/d1_pkt.c
index ca2d73f..3f19077 100644
--- a/ssl/d1_pkt.c
+++ b/ssl/d1_pkt.c
@@ -156,6 +156,9 @@ 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);
     }
@@ -253,9 +256,6 @@ dtls1_process_buffered_records(SSL *s)
     item = pqueue_peek(s->d1->unprocessed_rcds.q);
     if (item)
         {
-        DTLS1_RECORD_DATA *rdata;
-        rdata = (DTLS1_RECORD_DATA *)item->data;
-        
         /* Check if epoch is current. */
         if (s->d1->unprocessed_rcds.epoch != s->d1->r_epoch)
             return(1);  /* Nothing to do. */
@@ -328,7 +328,7 @@ dtls1_get_buffered_record(SSL *s)
 static int
 dtls1_process_record(SSL *s)
 {
-    int i,al;
+    int al;
 	int clear=0;
     int enc_err;
 	SSL_SESSION *sess;
@@ -374,7 +374,7 @@ dtls1_process_record(SSL *s)
 			goto err;
 
 		/* otherwise enc_err == -1 */
-		goto decryption_failed_or_bad_record_mac;
+		goto err;
 		}
 
 #ifdef TLS_DEBUG
@@ -400,7 +400,7 @@ if (	(sess == NULL) ||
 			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) */
@@ -411,14 +411,14 @@ if (	(sess == NULL) ||
 			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);
+		s->method->ssl3_enc->mac(s,md,0);
 		if (memcmp(md,&(rr->data[rr->length]),mac_size) != 0)
 			{
-			goto decryption_failed_or_bad_record_mac;
+			goto err;
 			}
 		}
 
@@ -460,14 +460,6 @@ if (	(sess == NULL) ||
     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:
@@ -489,19 +481,16 @@ int dtls1_get_record(SSL *s)
 	int ssl_major,ssl_minor;
 	int i,n;
 	SSL3_RECORD *rr;
-	SSL_SESSION *sess;
 	unsigned char *p = NULL;
 	unsigned short version;
 	DTLS1_BITMAP *bitmap;
 	unsigned int is_next_epoch;
 
 	rr= &(s->s3->rrec);
-	sess=s->session;
 
     /* 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))
@@ -624,21 +613,26 @@ again:
 	/* just read a 0 length packet */
 	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 */
-    if (is_next_epoch)
-        {
-        dtls1_record_bitmap_update(s, bitmap);
-        dtls1_buffer_record(s, &(s->d1->unprocessed_rcds), &rr->seq_num);
-	rr->length = 0;
+	/* If this record is from the next epoch (either HM or ALERT),
+	 * and a handshake is currently in progress, buffer it since it
+	 * cannot be processed at this time. */
+	if (is_next_epoch)
+		{
+		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);
@@ -766,7 +760,7 @@ 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;
 		}
diff --git a/ssl/dtls1.h b/ssl/dtls1.h
index a8ce51a..697ff6e 100644
--- a/ssl/dtls1.h
+++ b/ssl/dtls1.h
@@ -165,6 +165,7 @@ typedef struct hm_fragment_st
 	{
 	struct hm_header_st msg_header;
 	unsigned char *fragment;
+	unsigned char *reassembly;
 	} hm_fragment;
 
 typedef struct dtls1_state_st
diff --git a/ssl/s23_clnt.c b/ssl/s23_clnt.c
index de02389..c6b9142 100644
--- a/ssl/s23_clnt.c
+++ b/ssl/s23_clnt.c
@@ -369,7 +369,9 @@ static int ssl23_client_hello(SSL *s)
 				}
 			s2n(i,p);
 			p+=i;
-
+#ifdef OPENSSL_NO_COMP
+			*(p++)=1;
+#else
 			/* COMPRESSION */
 			if (s->ctx->comp_methods == NULL)
 				j=0;
@@ -381,6 +383,7 @@ static int ssl23_client_hello(SSL *s)
 				comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
 				*(p++)=comp->id;
 				}
+#endif
 			*(p++)=0; /* Add the NULL method */
 #ifndef OPENSSL_NO_TLSEXT
 			if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
diff --git a/ssl/s23_lib.c b/ssl/s23_lib.c
index fc29813..0b82777 100644
--- a/ssl/s23_lib.c
+++ b/ssl/s23_lib.c
@@ -97,14 +97,8 @@ SSL_CIPHER *ssl23_get_cipher(unsigned int u)
  * available */
 SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p)
 	{
-	SSL_CIPHER c,*cp;
-	unsigned long id;
-	int n;
+	SSL_CIPHER *cp;
 
-	n=ssl3_num_ciphers();
-	id=0x03000000|((unsigned long)p[0]<<16L)|
-		((unsigned long)p[1]<<8L)|(unsigned long)p[2];
-	c.id=id;
 	cp=ssl3_get_cipher_by_char(p);
 #ifndef OPENSSL_NO_SSL2
 	if (cp == NULL)
diff --git a/ssl/s2_srvr.c b/ssl/s2_srvr.c
index 01d62fa..eeffe25 100644
--- a/ssl/s2_srvr.c
+++ b/ssl/s2_srvr.c
@@ -697,7 +697,6 @@ static int server_hello(SSL *s)
 	{
 	unsigned char *p,*d;
 	int n,hit;
-	STACK_OF(SSL_CIPHER) *sk;
 
 	p=(unsigned char *)s->init_buf->data;
 	if (s->state == SSL2_ST_SEND_SERVER_HELLO_A)
@@ -778,7 +777,6 @@ static int server_hello(SSL *s)
 			
 			/* lets send out the ciphers we like in the
 			 * prefered order */
-			sk= s->session->ciphers;
 			n=ssl_cipher_list_to_bytes(s,s->session->ciphers,d,0);
 			d+=n;
 			s2n(n,p);		/* add cipher length */
diff --git a/ssl/s3_both.c b/ssl/s3_both.c
index 7f46225..869a25d 100644
--- a/ssl/s3_both.c
+++ b/ssl/s3_both.c
@@ -354,6 +354,8 @@ unsigned long ssl3_output_cert_chain(SSL *s, X509 *x)
 				return(0);
 				}
 			X509_verify_cert(&xs_ctx);
+			/* Don't leave errors in the queue */
+			ERR_clear_error();
 			for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
 				{
 				x = sk_X509_value(xs_ctx.chain, i);
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index e5138b6..f0995b9 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -166,7 +166,7 @@ IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
 int ssl3_connect(SSL *s)
 	{
 	BUF_MEM *buf=NULL;
-	unsigned long Time=(unsigned long)time(NULL),l;
+	unsigned long Time=(unsigned long)time(NULL);
 	void (*cb)(const SSL *ssl,int type,int val)=NULL;
 	int ret= -1;
 	int new_state,state,skip=0;
@@ -360,7 +360,6 @@ int ssl3_connect(SSL *s)
 		case SSL3_ST_CW_KEY_EXCH_B:
 			ret=ssl3_send_client_key_exchange(s);
 			if (ret <= 0) goto end;
-			l=s->s3->tmp.new_cipher->algorithms;
 			/* EAY EAY EAY need to check for DH fix cert
 			 * sent back */
 			/* For TLS, cert_req is set to 2, so a cert chain
@@ -1377,6 +1376,7 @@ int ssl3_get_key_exchange(SSL *s)
 		s->session->sess_cert->peer_ecdh_tmp=ecdh;
 		ecdh=NULL;
 		BN_CTX_free(bn_ctx);
+		bn_ctx = NULL;
 		EC_POINT_free(srvr_ecpoint);
 		srvr_ecpoint = NULL;
 		}
diff --git a/ssl/s3_enc.c b/ssl/s3_enc.c
index 06e5466..1539a4c 100644
--- a/ssl/s3_enc.c
+++ b/ssl/s3_enc.c
@@ -191,7 +191,7 @@ static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
 
 int ssl3_change_cipher_state(SSL *s, int which)
 	{
-	unsigned char *p,*key_block,*mac_secret;
+	unsigned char *p,*mac_secret;
 	unsigned char exp_key[EVP_MAX_KEY_LENGTH];
 	unsigned char exp_iv[EVP_MAX_IV_LENGTH];
 	unsigned char *ms,*key,*iv,*er1,*er2;
@@ -214,7 +214,6 @@ int ssl3_change_cipher_state(SSL *s, int which)
 	else
 		comp=s->s3->tmp.new_compression->method;
 #endif
-	key_block=s->s3->tmp.key_block;
 
 	if (which & SSL3_CC_READ)
 		{
diff --git a/ssl/ssl_algs.c b/ssl/ssl_algs.c
index 2d9077e..6488cdf 100644
--- a/ssl/ssl_algs.c
+++ b/ssl/ssl_algs.c
@@ -102,6 +102,14 @@ int SSL_library_init(void)
 	EVP_add_digest_alias(SN_sha1,"ssl3-sha1");
 	EVP_add_digest_alias(SN_sha1WithRSAEncryption,SN_sha1WithRSA);
 #endif
+#ifndef OPENSSL_NO_SHA256
+	EVP_add_digest(EVP_sha224());
+	EVP_add_digest(EVP_sha256());
+#endif
+#ifndef OPENSSL_NO_SHA512
+	EVP_add_digest(EVP_sha384());
+	EVP_add_digest(EVP_sha512());
+#endif
 #if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_DSA)
 	EVP_add_digest(EVP_dss1()); /* DSA with sha1 */
 	EVP_add_digest_alias(SN_dsaWithSHA1,SN_dsaWithSHA1_2);
diff --git a/ssl/ssl_asn1.c b/ssl/ssl_asn1.c
index d82e47a..df8ec82 100644
--- a/ssl/ssl_asn1.c
+++ b/ssl/ssl_asn1.c
@@ -297,7 +297,7 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 	     long length)
 	{
-	int version,ssl_version=0,i;
+	int ssl_version=0,i;
 	long id;
 	ASN1_INTEGER ai,*aip;
 	ASN1_OCTET_STRING os,*osp;
@@ -311,7 +311,6 @@ SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 
 	ai.data=NULL; ai.length=0;
 	M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
-	version=(int)ASN1_INTEGER_get(aip);
 	if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 
 	/* we don't care about the version right now :-) */
diff --git a/ssl/ssl_cert.c b/ssl/ssl_cert.c
index 16fda5d..361cd9c 100644
--- a/ssl/ssl_cert.c
+++ b/ssl/ssl_cert.c
@@ -753,6 +753,8 @@ int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
 			sk_X509_NAME_push(stack,xn);
 		}
 
+	ERR_clear_error();
+
 	if (0)
 		{
 err:
diff --git a/ssl/ssl_ciph.c b/ssl/ssl_ciph.c
index 5e2d436..a34680e 100644
--- a/ssl/ssl_ciph.c
+++ b/ssl/ssl_ciph.c
@@ -777,7 +777,7 @@ static int ssl_cipher_process_rulestr(const char *rule_str,
 		CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list)
 	{
 	unsigned long algorithms, mask, algo_strength, mask_strength;
-	const char *l, *start, *buf;
+	const char *l, *buf;
 	int j, multi, found, rule, retval, ok, buflen;
 	unsigned long cipher_id = 0, ssl_version = 0;
 	char ch;
@@ -809,7 +809,6 @@ static int ssl_cipher_process_rulestr(const char *rule_str,
 
 		algorithms = mask = algo_strength = mask_strength = 0;
 
-		start=l;
 		for (;;)
 			{
 			ch = *l;
@@ -1100,7 +1099,7 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
 	int is_export,pkl,kl;
 	const char *ver,*exp_str;
 	const char *kx,*au,*enc,*mac;
-	unsigned long alg,alg2,alg_s;
+	unsigned long alg,alg2;
 #ifdef KSSL_DEBUG
 	static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
 #else
@@ -1108,7 +1107,6 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
 #endif /* KSSL_DEBUG */
 
 	alg=cipher->algorithms;
-	alg_s=cipher->algo_strength;
 	alg2=cipher->algorithm2;
 
 	is_export=SSL_C_IS_EXPORT(cipher);
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 15650da..b6b8e60 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1940,15 +1940,13 @@ int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
 /* THIS NEEDS CLEANING UP */
 X509 *ssl_get_server_send_cert(SSL *s)
 	{
-	unsigned long alg,mask,kalg;
+	unsigned long alg,kalg;
 	CERT *c;
-	int i,is_export;
+	int i;
 
 	c=s->cert;
 	ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
 	alg=s->s3->tmp.new_cipher->algorithms;
-	is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
-	mask=is_export?c->export_mask:c->mask;
 	kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
 
 	if (kalg & SSL_kECDH)
diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index b09c542..310e067 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -1351,7 +1351,6 @@ int doit(SSL *s_ssl, SSL *c_ssl, long count)
 	BIO *c_bio=NULL;
 	BIO *s_bio=NULL;
 	int c_r,c_w,s_r,s_w;
-	int c_want,s_want;
 	int i,j;
 	int done=0;
 	int c_write,s_write;
@@ -1386,8 +1385,6 @@ int doit(SSL *s_ssl, SSL *c_ssl, long count)
 
 	c_r=0; s_r=1;
 	c_w=1; s_w=0;
-	c_want=W_WRITE;
-	s_want=0;
 	c_write=1,s_write=0;
 
 	/* We can always do writes */
diff --git a/ssl/t1_enc.c b/ssl/t1_enc.c
index dab6e44..3483098 100644
--- a/ssl/t1_enc.c
+++ b/ssl/t1_enc.c
@@ -125,7 +125,7 @@ static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
 			int sec_len, unsigned char *seed, int seed_len,
 			unsigned char *out, int olen)
 	{
-	int chunk,n;
+	int chunk;
 	unsigned int j;
 	HMAC_CTX ctx;
 	HMAC_CTX ctx_tmp;
@@ -143,7 +143,6 @@ static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
 	HMAC_Update(&ctx,seed,seed_len);
 	HMAC_Final(&ctx,A1,&A1_len);
 
-	n=0;
 	for (;;)
 		{
 		HMAC_Init_ex(&ctx,NULL,0,NULL,NULL); /* re-init */
@@ -227,14 +226,14 @@ static void tls1_generate_key_block(SSL *s, unsigned char *km,
 int tls1_change_cipher_state(SSL *s, int which)
 	{
 	static const unsigned char empty[]="";
-	unsigned char *p,*key_block,*mac_secret;
+	unsigned char *p,*mac_secret;
 	unsigned char *exp_label,buf[TLS_MD_MAX_CONST_SIZE+
 		SSL3_RANDOM_SIZE*2];
 	unsigned char tmp1[EVP_MAX_KEY_LENGTH];
 	unsigned char tmp2[EVP_MAX_KEY_LENGTH];
 	unsigned char iv1[EVP_MAX_IV_LENGTH*2];
 	unsigned char iv2[EVP_MAX_IV_LENGTH*2];
-	unsigned char *ms,*key,*iv,*er1,*er2;
+	unsigned char *ms,*key,*iv;
 	int client_write;
 	EVP_CIPHER_CTX *dd;
 	const EVP_CIPHER *c;
@@ -251,9 +250,10 @@ int tls1_change_cipher_state(SSL *s, int which)
 #ifndef OPENSSL_NO_COMP
 	comp=s->s3->tmp.new_compression;
 #endif
-	key_block=s->s3->tmp.key_block;
 
 #ifdef KSSL_DEBUG
+	key_block=s->s3->tmp.key_block;
+
 	printf("tls1_change_cipher_state(which= %d) w/\n", which);
 	printf("\talg= %ld, comp= %p\n", s->s3->tmp.new_cipher->algorithms,
                 (void *)comp);
@@ -348,8 +348,6 @@ int tls1_change_cipher_state(SSL *s, int which)
 	               cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
 	/* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
 	k=EVP_CIPHER_iv_length(c);
-	er1= &(s->s3->client_random[0]);
-	er2= &(s->s3->server_random[0]);
 	if (	(which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
 		(which == SSL3_CHANGE_CIPHER_SERVER_READ))
 		{
@@ -535,13 +533,11 @@ int tls1_enc(SSL *s, int send)
 	SSL3_RECORD *rec;
 	EVP_CIPHER_CTX *ds;
 	unsigned long l;
-	int bs,i,ii,j,k,n=0;
+	int bs,i,ii,j,k;
 	const EVP_CIPHER *enc;
 
 	if (send)
 		{
-		if (s->write_hash != NULL)
-			n=EVP_MD_size(s->write_hash);
 		ds=s->enc_write_ctx;
 		rec= &(s->s3->wrec);
 		if (s->enc_write_ctx == NULL)
@@ -551,8 +547,6 @@ int tls1_enc(SSL *s, int send)
 		}
 	else
 		{
-		if (s->read_hash != NULL)
-			n=EVP_MD_size(s->read_hash);
 		ds=s->enc_read_ctx;
 		rec= &(s->s3->rrec);
 		if (s->enc_read_ctx == NULL)
diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index 8b53112..0cc8320 100644
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -432,14 +432,23 @@ int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 				switch (servname_type)
 					{
 				case TLSEXT_NAMETYPE_host_name:
-					if (s->session->tlsext_hostname == NULL)
+					if (!s->hit)
 						{
-						if (len > TLSEXT_MAXLEN_host_name || 
-							((s->session->tlsext_hostname = OPENSSL_malloc(len+1)) == NULL))
+						if(s->session->tlsext_hostname)
+							{
+							*al = SSL_AD_DECODE_ERROR;
+							return 0;
+							}
+						if (len > TLSEXT_MAXLEN_host_name)
 							{
 							*al = TLS1_AD_UNRECOGNIZED_NAME;
 							return 0;
 							}
+						if ((s->session->tlsext_hostname = OPENSSL_malloc(len+1)) == NULL)
+							{
+							*al = TLS1_AD_INTERNAL_ERROR;
+							return 0;
+							}
 						memcpy(s->session->tlsext_hostname, sdata, len);
 						s->session->tlsext_hostname[len]='\0';
 						if (strlen(s->session->tlsext_hostname) != len) {
@@ -452,7 +461,8 @@ int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 
 						}
 					else 
-						s->servername_done = strlen(s->session->tlsext_hostname) == len 
+						s->servername_done = s->session->tlsext_hostname
+							&& strlen(s->session->tlsext_hostname) == len 
 							&& strncmp(s->session->tlsext_hostname, (char *)sdata, len) == 0;
 					
 					break;
@@ -601,9 +611,9 @@ int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 
 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **p, unsigned char *d, int n, int *al)
 	{
+	unsigned short length;
 	unsigned short type;
 	unsigned short size;
-	unsigned short len;  
 	unsigned char *data = *p;
 	int tlsext_servername = 0;
 	int renegotiate_seen = 0;
@@ -611,7 +621,12 @@ int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 	if (data >= (d+n-2))
 		goto ri_check;
 
-	n2s(data,len);
+	n2s(data,length);
+	if (data+length != d+n)
+		{
+		*al = SSL_AD_DECODE_ERROR;
+		return 0;
+		}
 
 	while(data <= (d+n-4))
 		{