From 8919b7cf69575773ce7140a5412d0547a26bb8e6 Mon Sep 17 00:00:00 2001

From: "peng.wang@smartm.com" peng.wang@smartm.com Date: Tue, 4 May 2021 01:13:31 -0700 Subject: [PATCH] cli: Fix non-printable character handling

This patch converts unhandled non-printable character to a beep without putting it into the buffer.

Signed-off-by: peng.wang@smartm.com peng.wang@smartm.com --- common/cli_readline.c | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/common/cli_readline.c b/common/cli_readline.c index c7614a4c90..c481917d5e 100644 --- a/common/cli_readline.c +++ b/common/cli_readline.c @@ -637,6 +637,12 @@ int cli_readline_into_buffer(const char *const prompt, char *buffer, } else { char __maybe_unused buf[2];

+ if (c <= 0x1f || c > 0x7f) { + /* all special characters shall be handled above; + otherwise output an alarm here without changing col */ + putc('\a'); + continue; + } /* * Echo input using puts() to force an * LCD flush if we are using an LCD