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authorDenys Vlasenko <vda.linux@googlemail.com>2019-10-18 16:47:37 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2019-10-18 16:47:37 +0200
commit95867147f5cdf6650dbfc207c8dada86246f23ae (patch)
tree4b65ff7b3395f4d271f9c7529588219be8db1afe /networking
parent37a9008f8e82b9469062f5a792a26f145012c617 (diff)
downloadbusybox-95867147f5cdf6650dbfc207c8dada86246f23ae.tar.gz
telnet: add disabled code to emit EC and IP
> I'm trying to connect to a Korenix 3005 switch through telnet > for management purposes, and all is well except for the backspace character > - seems like my switch doesn't handle it too well and instead of erasing > the last character all it does is print some garbage to the screen. > I've had the same issue before while using putty, but saw a solution that > suggests to enable "Telnet special commands" in the options menu, and it > worked. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking')
-rw-r--r--networking/telnet.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/networking/telnet.c b/networking/telnet.c
index 5c8805265..9fc85050b 100644
--- a/networking/telnet.c
+++ b/networking/telnet.c
@@ -238,6 +238,18 @@ static void handle_net_output(int len)
*dst = '\r'; /* Enter -> CR LF */
*++dst = '\n';
}
+#if 0
+/* putty's "special commands" mode does this: */
+/* Korenix 3005 switch needs at least the backspace tweak */
+ if (c == 0x08 || c == 0x7f) { /* ctrl+h || backspace */
+ *dst = IAC;
+ *++dst = EC;
+ }
+ if (c == 0x03) { /* ctrl+c */
+ *dst = IAC;
+ *++dst = IP;
+ }
+#endif
dst++;
}
if (dst - outbuf != 0)