Add Next Protocol Negotiation.

1 files changed, 44 insertions, 0 deletions

diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index 6cf6e6f378..1578f17e97 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -460,7 +460,16 @@ int ssl3_connect(SSL *s)
 			ret=ssl3_send_change_cipher_spec(s,
 				SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
 			if (ret <= 0) goto end;
+
+
+#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
 			s->state=SSL3_ST_CW_FINISHED_A;
+#else
+			if (s->next_proto_negotiated)
+				s->state=SSL3_ST_CW_NEXT_PROTO_A;
+			else
+				s->state=SSL3_ST_CW_FINISHED_A;
+#endif
 			s->init_num=0;
 
 			s->session->cipher=s->s3->tmp.new_cipher;
@@ -488,6 +497,15 @@ int ssl3_connect(SSL *s)
 
 			break;
 
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
+		case SSL3_ST_CW_NEXT_PROTO_A:
+		case SSL3_ST_CW_NEXT_PROTO_B:
+			ret=ssl3_send_next_proto(s);
+			if (ret <= 0) goto end;
+			s->state=SSL3_ST_CW_FINISHED_A;
+			break;
+#endif
+
 		case SSL3_ST_CW_FINISHED_A:
 		case SSL3_ST_CW_FINISHED_B:
 			ret=ssl3_send_finished(s,
@@ -3236,6 +3254,32 @@ err:
 	return(0);
 	}
 
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
+int ssl3_send_next_proto(SSL *s)
+	{
+	unsigned int len, padding_len;
+	unsigned char *d;
+
+	if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
+		{
+		len = s->next_proto_negotiated_len;
+		padding_len = 32 - ((len + 2) % 32);
+		d = (unsigned char *)s->init_buf->data;
+		d[4] = len;
+		memcpy(d + 5, s->next_proto_negotiated, len);
+		d[5 + len] = padding_len;
+		memset(d + 6 + len, 0, padding_len);
+		*(d++)=SSL3_MT_NEXT_PROTO;
+		l2n3(2 + len + padding_len, d);
+		s->state = SSL3_ST_CW_NEXT_PROTO_B;
+		s->init_num = 4 + 2 + len + padding_len;
+		s->init_off = 0;
+		}
+
+	return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
+}
+#endif  /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
+
 /* Check to see if handshake is full or resumed. Usually this is just a
  * case of checking to see if a cache hit has occurred. In the case of
  * session tickets we have to check the next message to be sure.