Date: Sun, 11 Jun 1995 19:40:02 -0700 From: Charles Henrich <henrich@crh.cl.msu.edu> To: freebsd-bugs Subject: bin/505: LINEMODE causes problems with some telnetd clients + fix. Message-ID: <199506120240.TAA15991@freefall.cdrom.com> In-Reply-To: Your message of Sun, 11 Jun 1995 22:34:14 -0400 <199506120234.WAA05116@crh.cl.msu.edu>
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>Number: 505
>Category: bin
>Synopsis: LINEMODE causes problems with some telnetd clients + fix.
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs (FreeBSD bugs mailing list)
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Jun 11 19:40:01 1995
>Originator: Charles Henrich
>Organization:
Michigan State U.
>Release: FreeBSD 2.0-BUILT-19950603 i386
>Environment:
FreeBSD 2.0.5-R
>Description:
The final negotiation of DO_BINARY in the LINEMODE portion of the telnetd code
causes some clients that do not support linemode to mis-interpret the return
key (i.e. double returns).
>How-To-Repeat:
Use FTP Software PCTCP or NCSA Telnet and telnet to a freebsd box.
>Fix:
*** termstat.c.orig Mon Dec 21 08:09:29 1987
--- termstat.c Mon Dec 21 08:18:20 1987
***************
*** 144,168 ****
#endif /* defined(CRAY2) && defined(UNICOS5) */
/*
- * Check for state of BINARY options.
- */
- if (tty_isbinaryin()) {
- if (his_want_state_is_wont(TELOPT_BINARY))
- send_do(TELOPT_BINARY, 1);
- } else {
- if (his_want_state_is_will(TELOPT_BINARY))
- send_dont(TELOPT_BINARY, 1);
- }
-
- if (tty_isbinaryout()) {
- if (my_want_state_is_wont(TELOPT_BINARY))
- send_will(TELOPT_BINARY, 1);
- } else {
- if (my_want_state_is_will(TELOPT_BINARY))
- send_wont(TELOPT_BINARY, 1);
- }
-
- /*
* Check for changes to flow control if client supports it.
*/
flowstat();
--- 144,149 ----
***************
*** 181,186 ****
--- 162,195 ----
tty_setlinemode(uselinemode);
}
+ if(uselinemode) {
+
+ /*
+ * Check for state of BINARY options.
+ *
+ * We only need to do the binary dance if we are actually going
+ * to use linemode. As this confuses some telnet clients that dont
+ * support linemode, and doesnt gain us anything, we dont do it
+ * unless we're doing linemode. -Crh (henrich@msu.edu)
+ */
+
+ if (tty_isbinaryin()) {
+ if (his_want_state_is_wont(TELOPT_BINARY))
+ send_do(TELOPT_BINARY, 1);
+ } else {
+ if (his_want_state_is_will(TELOPT_BINARY))
+ send_dont(TELOPT_BINARY, 1);
+ }
+
+ if (tty_isbinaryout()) {
+ if (my_want_state_is_wont(TELOPT_BINARY))
+ send_will(TELOPT_BINARY, 1);
+ } else {
+ if (my_want_state_is_will(TELOPT_BINARY))
+ send_wont(TELOPT_BINARY, 1);
+ }
+
+ }
/*
* Do echo mode handling as soon as we know what the
>Audit-Trail:
>Unformatted:
To: FreeBSD-gnats-submit@freebsd.org
Subject: LINEMODE causes problems with some telnetd clients + fix.
From: henrich@crh.cl.msu.edu
Reply-To: henrich@crh.cl.msu.edu
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