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From: tim@amdcad.AMD.COM (Tim Olson)
Newsgroups: comp.unix.xenix,comp.sources.wanted,comp.unix.questions
Subject: Re: tty watcher
Message-ID: <18247@amdcad.AMD.COM>
Date: Mon, 14-Sep-87 12:44:20 EDT
Article-I.D.: amdcad.18247
Posted: Mon Sep 14 12:44:20 1987
Date-Received: Tue, 15-Sep-87 06:22:28 EDT
References: <4263@ozdaltx.UUCP> <15136@hi.UUCP> <1178@mtune.ATT.COM> <27816@sun.uucp>
Reply-To: tim@amdcad.UUCP (Tim Olson)
Organization: Advanced Micro Devices
Lines: 16
Xref: mnetor comp.unix.xenix:733 comp.sources.wanted:2244 comp.unix.questions:4065

In article <27816@sun.uucp> guy@sun.uucp (Guy Harris) writes:
+-----
| > :A while back I'd asked if anyone has an effective tty
| > :watcher or "spy" program, or if they had suggestion as to
| > :how such a thing could be accomplished.
| > 
| 2) Streams modules live in the kernel, and not everybody can stuff an
| arbitrary streams module into their kernel.  The tty watcher in question
| requires *some* kernel hacking (unless the vendor of your system has already
| done that hacking) even with a streams tty.
+-----
What about a new getty which, instead of exec'ing the user's shell,
forks the shell with a pseudo-tty as a terminal, then "watches" the real
terminal, sending the characters received & sent both to the pseudo-tty
as well as to the snooper?  That wouldn't involve hacking the kernal at
all.