Fixes to NPN from Adam Langley.

apps/apps.c

@@ -3032,7 +3032,7 @@ int raw_write_stdout(const void *buf,int siz)
 	{	return write(fileno(stdout),buf,siz);	}
 #endif
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 /* next_protos_parse parses a comma separated list of strings into a string
  * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
  *   outlen: (output) set to the length of the resulting buffer on success.
@@ -3047,7 +3047,7 @@ unsigned char *next_protos_parse(unsigned short *outlen, const char *in)
 	size_t i, start = 0;
 
 	len = strlen(in);
-	if (len > 65535)
+	if (len >= 65535)
 		return NULL;
 
 	out = OPENSSL_malloc(strlen(in) + 1);
@@ -3073,4 +3073,4 @@ unsigned char *next_protos_parse(unsigned short *outlen, const char *in)
 	*outlen = len + 1;
 	return out;
 	}
-#endif  /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NPN */
+#endif  /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */

apps/apps.h

@@ -365,6 +365,6 @@ int raw_write_stdout(const void *,int);
 double app_tminterval (int stop,int usertime);
 #endif
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 unsigned char *next_protos_parse(unsigned short *outlen, const char *in);
 #endif

apps/s_client.c

@@ -343,7 +343,7 @@ static void sc_usage(void)
 	BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
 	BIO_printf(bio_err," -status           - request certificate status from server\n");
 	BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
 # endif
 #endif
@@ -371,7 +371,7 @@ static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
 	return SSL_TLSEXT_ERR_OK;
 	}
 
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 /* This the context that we pass to next_proto_cb */
 typedef struct tlsextnextprotoctx_st {
 	unsigned char *data;
@@ -403,7 +403,7 @@ static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, con
 	ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
 	return SSL_TLSEXT_ERR_OK;
 	}
-# endif  /* ndef OPENSSL_NO_NPN */
+# endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 #endif
 
 enum
@@ -467,7 +467,7 @@ int MAIN(int argc, char **argv)
 	char *servername = NULL; 
         tlsextctx tlsextcbp = 
         {NULL,0};
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	const char *next_proto_neg_in = NULL;
 # endif
 #endif
@@ -701,7 +701,7 @@ int MAIN(int argc, char **argv)
 #ifndef OPENSSL_NO_TLSEXT
 		else if	(strcmp(*argv,"-no_ticket") == 0)
 			{ off|=SSL_OP_NO_TICKET; }
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 		else if (strcmp(*argv,"-nextprotoneg") == 0)
 			{
 			if (--argc < 1) goto bad;
@@ -814,7 +814,7 @@ bad:
 	OpenSSL_add_ssl_algorithms();
 	SSL_load_error_strings();
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 	next_proto.status = -1;
 	if (next_proto_neg_in)
 		{
@@ -950,7 +950,7 @@ bad:
 	 */
 	if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 	if (next_proto.data)
 		SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
 #endif
@@ -1815,7 +1815,7 @@ static void print_stuff(BIO *bio, SSL *s, int full)
 		expansion ? SSL_COMP_get_name(expansion) : "NONE");
 #endif
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 	if (next_proto.status != -1) {
 		const unsigned char *proto;
 		unsigned int proto_len;

apps/s_server.c

@@ -496,12 +496,12 @@ static void sv_usage(void)
 	BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT2);
 	BIO_printf(bio_err," -key2 arg     - Private Key file to use for servername, in cert file if\n");
 	BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT2);
-# ifndef OPENSSL_NO_NPN
 	BIO_printf(bio_err," -tlsextdebug  - hex dump of all TLS extensions received\n");
-# endif
 	BIO_printf(bio_err," -no_ticket    - disable use of RFC4507bis session tickets\n");
 	BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	BIO_printf(bio_err," -nextprotoneg arg - set the advertised protocols for the NPN extension (comma-separated list)\n");
+# endif
 #endif
 	}
 
@@ -837,7 +837,7 @@ BIO_printf(err, "cert_status: received %d ids\n", sk_OCSP_RESPID_num(ids));
 	goto done;
 	}
 
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 /* This is the context that we pass to next_proto_cb */
 typedef struct tlsextnextprotoctx_st {
 	unsigned char *data;
@@ -901,7 +901,7 @@ int MAIN(int argc, char *argv[])
 #endif
 #ifndef OPENSSL_NO_TLSEXT
         tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING};
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	const char *next_proto_neg_in = NULL;
 	tlsextnextprotoctx next_proto;
 # endif
@@ -1237,7 +1237,7 @@ int MAIN(int argc, char *argv[])
 			if (--argc < 1) goto bad;
 			s_key_file2= *(++argv);
 			}
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 		else if	(strcmp(*argv,"-nextprotoneg") == 0)
 			{
 			if (--argc < 1) goto bad;
@@ -1348,7 +1348,7 @@ bad:
 				goto end;
 				}
 			}
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 		if (next_proto_neg_in)
 			{
 			unsigned short len;
@@ -1548,7 +1548,7 @@ bad:
 			SSL_CTX_set1_param(ctx2, vpm);
 		}
 
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	if (next_proto.data)
 		SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb, &next_proto);
 # endif
@@ -2245,7 +2245,7 @@ static int init_ssl_connection(SSL *con)
 	X509 *peer;
 	long verify_error;
 	MS_STATIC char buf[BUFSIZ];
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 	const unsigned char *next_proto_neg;
 	unsigned next_proto_neg_len;
 #endif
@@ -2288,7 +2288,7 @@ static int init_ssl_connection(SSL *con)
 		BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
 	str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
 	BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 	SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
 	if (next_proto_neg)
 		{

ssl/s3_both.c

@@ -202,7 +202,7 @@ int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
 	return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
 	}
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 /* ssl3_take_mac calculates the Finished MAC for the handshakes messages seen to far. */
 static void ssl3_take_mac(SSL *s)
 	{
@@ -231,7 +231,7 @@ int ssl3_get_finished(SSL *s, int a, int b)
 	long n;
 	unsigned char *p;
 
-#ifdef OPENSSL_NO_NPN
+#ifdef OPENSSL_NO_NEXTPROTONEG
 	/* the mac has already been generated when we received the
 	 * change cipher spec message and is in s->s3->tmp.peer_finish_md
 	 */ 
@@ -540,7 +540,7 @@ long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
 		n -= i;
 		}
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 	/* If receiving Finished, record MAC of prior handshake messages for
 	 * Finished verification. */
 	if (*s->init_buf->data == SSL3_MT_FINISHED)

ssl/s3_clnt.c

@@ -424,7 +424,7 @@ int ssl3_connect(SSL *s)
 				SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
 			if (ret <= 0) goto end;
 
-#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NPN)
+#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
 			s->state=SSL3_ST_CW_FINISHED_A;
 #else
 			if (s->next_proto_negotiated)
@@ -459,7 +459,7 @@ int ssl3_connect(SSL *s)
 
 			break;
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#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);
@@ -3018,7 +3018,7 @@ err:
  */
 
 #ifndef OPENSSL_NO_TLSEXT
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 int ssl3_send_next_proto(SSL *s)
 	{
 	unsigned int len, padding_len;

ssl/s3_lib.c

@@ -2231,7 +2231,7 @@ void ssl3_clear(SSL *s)
 	s->s3->in_read_app_data=0;
 	s->version=SSL3_VERSION;
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 	if (s->next_proto_negotiated)
 		{
 		OPENSSL_free(s->next_proto_negotiated);

ssl/s3_pkt.c

@@ -1375,7 +1375,7 @@ err:
 int ssl3_do_change_cipher_spec(SSL *s)
 	{
 	int i;
-#ifdef OPENSSL_NO_NPN
+#ifdef OPENSSL_NO_NEXTPROTONEG
 	const char *sender;
 	int slen;
 #endif
@@ -1401,7 +1401,7 @@ int ssl3_do_change_cipher_spec(SSL *s)
 	if (!s->method->ssl3_enc->change_cipher_state(s,i))
 		return(0);
 
-#ifdef OPENSSL_NO_NPN
+#ifdef OPENSSL_NO_NEXTPROTONEG
 	/* we have to record the message digest at
 	 * this point so we can get it before we read
 	 * the finished message */

ssl/s3_srvr.c

@@ -538,7 +538,7 @@ int ssl3_accept(SSL *s)
 				 * the client uses its key from the certificate
 				 * for key exchange.
 				 */
-#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NPN)
+#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
 				s->state=SSL3_ST_SR_FINISHED_A;
 #else
 				if (s->s3->next_proto_neg_seen)
@@ -588,7 +588,7 @@ int ssl3_accept(SSL *s)
 			ret=ssl3_get_cert_verify(s);
 			if (ret <= 0) goto end;
 
-#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NPN)
+#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
 			s->state=SSL3_ST_SR_FINISHED_A;
 #else
 			if (s->s3->next_proto_neg_seen)
@@ -599,7 +599,7 @@ int ssl3_accept(SSL *s)
 			s->init_num=0;
 			break;
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 		case SSL3_ST_SR_NEXT_PROTO_A:
 		case SSL3_ST_SR_NEXT_PROTO_B:
 			ret=ssl3_get_next_proto(s);
@@ -680,7 +680,7 @@ int ssl3_accept(SSL *s)
 			s->state=SSL3_ST_SW_FLUSH;
 			if (s->hit)
 				{
-#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NPN)
+#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
 				s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A;
 #else
 				if (s->s3->next_proto_neg_seen)
@@ -3242,7 +3242,7 @@ int ssl3_get_next_proto(SSL *s)
 		SSL3_ST_SR_NEXT_PROTO_A,
 		SSL3_ST_SR_NEXT_PROTO_B,
 		SSL3_MT_NEXT_PROTO,
-		129,
+		514,  /* See the payload format below */
 		&ok);
 
 	if (!ok)

ssl/ssl.h

@@ -860,7 +860,7 @@ struct ssl_ctx_st
 	int (*tlsext_opaque_prf_input_callback)(SSL *, void *peerinput, size_t len, void *arg);
 	void *tlsext_opaque_prf_input_callback_arg;
 
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	/* Next protocol negotiation information */
 	/* (for experimental NPN extension). */
 
@@ -949,7 +949,7 @@ int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
 #endif
 void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len));
 void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, int (*app_verify_cookie_cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len));
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
 					   int (*cb) (SSL *ssl,
 						      const unsigned char **out,
@@ -1236,7 +1236,7 @@ struct ssl_st
 
 	SSL_CTX * initial_ctx; /* initial ctx, used to store sessions */
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 	/* Next protocol negotiation. For the client, this is the protocol that
 	 * we sent in NextProtocol and is set when handling ServerHello
 	 * extensions.

ssl/ssl3.h

@@ -455,7 +455,7 @@ typedef struct ssl3_state_st
 	void *server_opaque_prf_input;
 	size_t server_opaque_prf_input_len;
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 	/* Set if we saw the Next Protocol Negotiation extension from
 	   our peer. */
 	int next_proto_neg_seen;
@@ -552,7 +552,7 @@ typedef struct ssl3_state_st
 #define SSL3_ST_CW_CERT_VRFY_B		(0x191|SSL_ST_CONNECT)
 #define SSL3_ST_CW_CHANGE_A		(0x1A0|SSL_ST_CONNECT)
 #define SSL3_ST_CW_CHANGE_B		(0x1A1|SSL_ST_CONNECT)
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 #define SSL3_ST_CW_NEXT_PROTO_A		(0x200|SSL_ST_CONNECT)
 #define SSL3_ST_CW_NEXT_PROTO_B		(0x201|SSL_ST_CONNECT)
 #endif
@@ -601,7 +601,7 @@ typedef struct ssl3_state_st
 #define SSL3_ST_SR_CERT_VRFY_B		(0x1A1|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_CHANGE_A		(0x1B0|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_CHANGE_B		(0x1B1|SSL_ST_ACCEPT)
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 #define SSL3_ST_SR_NEXT_PROTO_A		(0x210|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_NEXT_PROTO_B		(0x211|SSL_ST_ACCEPT)
 #endif
@@ -629,7 +629,7 @@ typedef struct ssl3_state_st
 #define SSL3_MT_CLIENT_KEY_EXCHANGE		16
 #define SSL3_MT_FINISHED			20
 #define SSL3_MT_CERTIFICATE_STATUS		22
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 #define SSL3_MT_NEXT_PROTO			67
 #endif
 #define DTLS1_MT_HELLO_VERIFY_REQUEST    3

ssl/ssl_lib.c

@@ -354,7 +354,7 @@ SSL *SSL_new(SSL_CTX *ctx)
 	s->tlsext_ocsp_resplen = -1;
 	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 	s->initial_ctx=ctx;
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	s->next_proto_negotiated = NULL;
 # endif
 #endif
@@ -590,7 +590,7 @@ void SSL_free(SSL *s)
 		kssl_ctx_free(s->kssl_ctx);
 #endif	/* OPENSSL_NO_KRB5 */
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
 	if (s->next_proto_negotiated)
 		OPENSSL_free(s->next_proto_negotiated);
 #endif
@@ -1497,7 +1497,7 @@ int SSL_get_servername_type(const SSL *s)
 	return -1;
 	}
 
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 /* SSL_select_next_proto implements the standard protocol selection. It is
  * expected that this function is called from the callback set by
  * SSL_CTX_set_next_proto_select_cb.
@@ -1778,7 +1778,7 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
 	ret->tlsext_status_cb = 0;
 	ret->tlsext_status_arg = NULL;
 
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 	ret->next_protos_advertised_cb = 0;
 	ret->next_proto_select_cb = 0;
 # endif

ssl/ssl_locl.h

@@ -968,7 +968,7 @@ int ssl3_get_server_certificate(SSL *s);
 int ssl3_check_cert_and_algorithm(SSL *s);
 #ifndef OPENSSL_NO_TLSEXT
 int ssl3_check_finished(SSL *s);
-# ifndef OPENSSL_NO_NPN
+# ifndef OPENSSL_NO_NEXTPROTONEG
 int ssl3_send_next_proto(SSL *s);
 # endif
 #endif
@@ -989,7 +989,7 @@ int ssl3_check_client_hello(SSL *s);
 int ssl3_get_client_certificate(SSL *s);
 int ssl3_get_client_key_exchange(SSL *s);
 int ssl3_get_cert_verify(SSL *s);
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 int ssl3_get_next_proto(SSL *s);
 #endif
 

ssl/t1_lib.c

@@ -494,7 +494,7 @@ unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, unsigned cha
 			i2d_X509_EXTENSIONS(s->tlsext_ocsp_exts, &ret);
 		}
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 	if (s->ctx->next_proto_select_cb && !s->s3->tmp.finish_md_len)
 		{
 		/* The client advertises an emtpy extension to indicate its
@@ -517,8 +517,8 @@ unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, unsigned cha
 	{
 	int extdatalen=0;
 	unsigned char *ret = p;
-#ifndef OPENSSL_NO_NPN
-	char next_proto_neg_seen;
+#ifndef OPENSSL_NO_NEXTPROTONEG
+	int next_proto_neg_seen;
 #endif
 
 	/* don't add extensions for SSLv3, unless doing secure renegotiation */
@@ -633,7 +633,7 @@ unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, unsigned cha
 
 		}
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 	next_proto_neg_seen = s->s3->next_proto_neg_seen;
 	s->s3->next_proto_neg_seen = 0;
 	if (next_proto_neg_seen && s->ctx->next_protos_advertised_cb)
@@ -995,7 +995,7 @@ int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 				else
 					s->tlsext_status_type = -1;
 			}
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 		else if (type == TLSEXT_TYPE_next_proto_neg &&
                          s->s3->tmp.finish_md_len == 0)
 			{
@@ -1040,11 +1040,11 @@ int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 	return 1;
 	}
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 /* ssl_next_proto_validate validates a Next Protocol Negotiation block. No
  * elements of zero length are allowed and the set of elements must exactly fill
  * the length of the block. */
-static char ssl_next_proto_validate(unsigned char *d, unsigned len)
+static int ssl_next_proto_validate(unsigned char *d, unsigned len)
 	{
 	unsigned int off = 0;
 
@@ -1194,7 +1194,7 @@ int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 			/* Set flag to expect CertificateStatus message */
 			s->tlsext_status_expected = 1;
 			}
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 		else if (type == TLSEXT_TYPE_next_proto_neg)
 			{
 			unsigned char *selected;

ssl/tls1.h

@@ -208,7 +208,7 @@ extern "C" {
 /* Temporary extension type */
 #define TLSEXT_TYPE_renegotiate                 0xff01
 
-#ifndef OPENSSL_NO_NPN
+#ifndef OPENSSL_NO_NEXTPROTONEG
 /* This is not an IANA defined extension number */
 #define TLSEXT_TYPE_next_proto_neg		13172
 #endif