Implement FIPS_mode and FIPS_mode_set

ssl/s23_srvr.c

@@ -115,6 +115,9 @@
 #include <openssl/rand.h>
 #include <openssl/objects.h>
 #include <openssl/evp.h>
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
 
 static const SSL_METHOD *ssl23_get_server_method(int ver);
 int ssl23_get_client_hello(SSL *s);
@@ -422,6 +425,15 @@ int ssl23_get_client_hello(SSL *s)
 			}
 		}
 
+#ifdef OPENSSL_FIPS
+	if (FIPS_mode() && (s->version < TLS1_VERSION))
+		{
+		SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
+					SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+		goto err;
+		}
+#endif
+
 	if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
 		{
 		/* we have SSLv3/TLSv1 in an SSLv2 header