From: yvs <VSYakovetsky@gmail.com>
Date: Fri, 8 May 2026 13:28:05 +0000 (+0400)
Subject: curses: validate packet size input
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F628%2Fhead;p=thirdparty%2Fmtr.git

curses: validate packet size input

Port the interactive packet-size validation from yvs2014/mtr085. The curses s command now validates the newly entered value before assigning it, matching the command-line packet-size range.

Ported-from: yvs2014/mtr085@e100fd72be37f0a98d6893db7e0baa8a5b81b72a

Original-author: yvs <VSYakovetsky@gmail.com>
---

diff --git a/ui/curses.c b/ui/curses.c
index 5c776e9..aa9a57c 100644
--- a/ui/curses.c
+++ b/ui/curses.c
@@ -217,8 +217,11 @@ int mtr_curses_keyaction(
         }
         buf[i] = '\0';
         int new_packetsize = atoi(buf);
-        if (abs(ctl->cpacketsize) >= MINPACKET && abs(ctl->cpacketsize) < MAXPACKET) {
+        if (abs(new_packetsize) >= MINPACKET
+            && abs(new_packetsize) <= MAXPACKET) {
             ctl->cpacketsize = new_packetsize;
+        } else {
+            printf("\a");
         }
         return ActionNone;
     case 'b':