From: Jim Warner <james.warner@comcast.net>
Date: Sun, 26 Jun 2022 05:00:00 +0000 (-0500)
Subject: top: afford another level of protection for line input <=== port of newlib 757a3452
X-Git-Tag: v4.0.3_rc1~33^2~22
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1750dd2b96577ac2ca51666ca4ba1da38bcb60e9;p=procps-ng

top: afford another level of protection for line input <=== port of newlib 757a3452

______________________________ original newlib message

This commit just provides the final protection against
possible screen corruption when processing line input.

[ such corruption was limited to the input line only ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
---

diff --git a/top/top.c b/top/top.c
index 9e3574fc..d6c80602 100644
--- a/top/top.c
+++ b/top/top.c
@@ -1423,7 +1423,7 @@ static char *ioline (const char *prompt) {
             pos = strlen(buf);
             break;
          default:                      // what we REALLY wanted (maybe)
-            if (bufNXT < bufMAX && scrNXT < Screen_cols) {
+            if (bufNXT < bufMAX && scrNXT < Screen_cols && strlen(buf) < bufMAX) {
                int tot = UTF8_tab[(unsigned char)key],
                    sav = pos;
                if (tot < 1) tot = 1;