From cd2e17020e6ce6ba1d29d643bfaf1758302c8ca7 Mon Sep 17 00:00:00 2001
From: "Dr. Stephen Henson" <steve@openssl.org>
Date: Tue, 12 Aug 2014 16:18:55 +0100
Subject: Remove serverinfo checks.
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Since sanity checks are performed for all custom extensions the
serverinfo checks are no longer needed.
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 707b026d7871eb12c23671c975e6a15a8c331785)

Conflicts:

	ssl/ssl3.h
	ssl/t1_lib.c
---
 ssl/s3_lib.c  | 10 ----------
 ssl/ssl3.h    |  7 -------
 ssl/ssl_rsa.c | 39 ---------------------------------------
 ssl/t1_lib.c  |  8 --------
 4 files changed, 64 deletions(-)

(limited to 'ssl')

diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c
index 1a1e3faac2..a15625b911 100644
--- a/ssl/s3_lib.c
+++ b/ssl/s3_lib.c
@@ -3027,10 +3027,6 @@ void ssl3_free(SSL *s)
 
 #ifndef OPENSSL_NO_SRP
 	SSL_SRP_CTX_free(s);
-#endif
-#ifndef OPENSSL_NO_TLSEXT
-	if (s->s3->serverinfo_client_tlsext_custom_types != NULL)
-		OPENSSL_free(s->s3->serverinfo_client_tlsext_custom_types);
 #endif
 	OPENSSL_cleanse(s->s3,sizeof *s->s3);
 	OPENSSL_free(s->s3);
@@ -3076,12 +3072,6 @@ void ssl3_clear(SSL *s)
 		}
 #endif
 #ifndef OPENSSL_NO_TLSEXT
-	if (s->s3->serverinfo_client_tlsext_custom_types != NULL)
-		{
-		OPENSSL_free(s->s3->serverinfo_client_tlsext_custom_types);
-		s->s3->serverinfo_client_tlsext_custom_types = NULL;
-		}
-	s->s3->serverinfo_client_tlsext_custom_types_count = 0;
 #ifndef OPENSSL_NO_EC
 	s->s3->is_probably_safari = 0;
 #endif /* !OPENSSL_NO_EC */
diff --git a/ssl/ssl3.h b/ssl/ssl3.h
index 504ad49d3b..7ba8f4c130 100644
--- a/ssl/ssl3.h
+++ b/ssl/ssl3.h
@@ -568,13 +568,6 @@ typedef struct ssl3_state_st
 	char is_probably_safari;
 #endif /* !OPENSSL_NO_EC */
 
-        /* serverinfo_client_tlsext_custom_types contains an array of TLS Extension types which
-         * were advertised by the client in its ClientHello and leveraged by ServerInfo TLS extension callbacks.
-	 * The array does not contain any duplicates, and is in the same order
-	 * as the types were received in the client hello. */
-        unsigned short *serverinfo_client_tlsext_custom_types;
-        size_t serverinfo_client_tlsext_custom_types_count; /* how many serverinfo_client_tlsext_custom_types */
-
 	/* ALPN information
 	 * (we are in the process of transitioning from NPN to ALPN.) */
 
diff --git a/ssl/ssl_rsa.c b/ssl/ssl_rsa.c
index 49bd03596a..76e9194a01 100644
--- a/ssl/ssl_rsa.c
+++ b/ssl/ssl_rsa.c
@@ -848,7 +848,6 @@ static int serverinfo_srv_first_cb(SSL *s, unsigned short ext_type,
 				   unsigned short inlen, int *al,
 				   void *arg)
 	{
-	size_t i = 0;
 
 	if (inlen != 0)
 		{
@@ -856,28 +855,6 @@ static int serverinfo_srv_first_cb(SSL *s, unsigned short ext_type,
 		return 0;
 		}
 
-	/* if already in list, error out */
-	for (i = 0; i < s->s3->serverinfo_client_tlsext_custom_types_count; i++)
-		{
-		if (s->s3->serverinfo_client_tlsext_custom_types[i] == ext_type)
-			{
-			*al = SSL_AD_DECODE_ERROR;
-			return 0;
-			}
-		}
-	s->s3->serverinfo_client_tlsext_custom_types_count++;
-	s->s3->serverinfo_client_tlsext_custom_types = OPENSSL_realloc(
-	s->s3->serverinfo_client_tlsext_custom_types,
-	s->s3->serverinfo_client_tlsext_custom_types_count * 2);
-	if (s->s3->serverinfo_client_tlsext_custom_types == NULL)
-		{
-		s->s3->serverinfo_client_tlsext_custom_types_count = 0;
-		*al = TLS1_AD_INTERNAL_ERROR;
-		return 0;
-		}
-	s->s3->serverinfo_client_tlsext_custom_types[
-	s->s3->serverinfo_client_tlsext_custom_types_count - 1] = ext_type;
-
 	return 1;
 	}
 
@@ -887,22 +864,6 @@ static int serverinfo_srv_second_cb(SSL *s, unsigned short ext_type,
 	{
 	const unsigned char *serverinfo = NULL;
 	size_t serverinfo_length = 0;
-	size_t i = 0;
-	unsigned int match = 0;
-	/* Did the client send a TLS extension for this type? */
-	for (i = 0; i < s->s3->serverinfo_client_tlsext_custom_types_count; i++)
-		{
-		if (s->s3->serverinfo_client_tlsext_custom_types[i] == ext_type)
-			{
-			match = 1;
-			break;
-			}
-		}
-	if (!match)
-		{
-		/* extension not sent by client...don't send extension */
-		return -1;
-		}
 
 	/* Is there serverinfo data for the chosen server cert? */
 	if ((ssl_get_server_cert_serverinfo(s, &serverinfo,
diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index f13b3762c9..bbb478d05a 100644
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -1868,14 +1868,6 @@ static int ssl_scan_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char
 	s->s3->next_proto_neg_seen = 0;
 #endif
 
-	/* Clear observed custom extensions */
-	s->s3->serverinfo_client_tlsext_custom_types_count = 0;
-	if (s->s3->serverinfo_client_tlsext_custom_types != NULL)
-		{
-		OPENSSL_free(s->s3->serverinfo_client_tlsext_custom_types);
-		s->s3->serverinfo_client_tlsext_custom_types = NULL;
-		}
-
 	if (s->s3->alpn_selected)
 		{
 		OPENSSL_free(s->s3->alpn_selected);
-- 
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