From a5e55f62975c0f978eb348763a1de0cd923f0d77 Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Tue, 20 Sep 2016 21:41:58 +0200
Subject: [PATCH] RT4669: dgst can only sign/verify one file

Check arg count and print an error message.

Reviewed-by: Rich Salz <rsalz@openssl.org>
---
 apps/dgst.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/apps/dgst.c b/apps/dgst.c
index 95e5fa3fc7..26afcd7b30 100644
--- a/apps/dgst.c
+++ b/apps/dgst.c
@@ -243,6 +243,11 @@ int MAIN(int argc, char **argv)
         argv++;
     }
 
+    if (keyfile != NULL && argc > 1) {
+        BIO_printf(bio_err, "Can only sign or verify one file\n");
+        goto end;
+    }
+
     if (do_verify && !sigfile) {
         BIO_printf(bio_err,
                    "No signature to verify: use the -signature option\n");
-- 
2.25.1