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Author SHA1 Message Date
Juli Mallett 2061e87111 Don't risk catching a signal while handling a signal for a dying child, as we 
can then end up not properly clearing wtmp/utmp entries.

PR:		bin/37934
Submitted by:	Sandeep Kumar <skumar@juniper.net>
Reviewed by:	markm
MFC after:	2 weeks
 2002-05-27 08:10:24 +00:00
Sheldon Hearn fa3e900453 Don't use non-signal-safe functions (exit(3) in this case) in 
signal handlers.  In this case, use _exit(2) instead, following
the call to shutdown(2).

This fixes rare telnetd hangs.

PR:		misc/33672
Submitted by:	Umesh Krishnaswamy <umesh@juniper.net>
MFC after:	1 month
 2002-02-05 15:20:02 +00:00
Mark Murray 7a32b4b1c6 Merge from master (crypto) telnet. WARNS fixes for alpha. 2001-12-03 12:41:19 +00:00
Mark Murray 33cc94ddaf Merge the (in)complete ANSIfication work from src/crypto/telnet. 2001-11-30 22:37:28 +00:00
Mark Murray e895047b95 After running a "make unifdef", commit the resultant diffs. 
This code is now a complete sunset of the crypto (master) code.
 2001-11-30 22:03:20 +00:00
Mark Murray 6b022d0047 Manually unifdef(1) CRAY, UNICOS, hpux and sun uselsess code. 2001-08-29 14:16:17 +00:00
Mark Murray aa71cb52b5 Feature merging and diff reduction between this code and crypto telnet. 
Also remove conditional (AUTHENTICATION) code as we have never compiled
it here, and it is doubtful that it even works in this scenario.
 2001-08-20 12:12:27 +00:00
Brian Somers 7bc6d0158f Fix the type of the NULL arg to execl() 
Idea from: Theo de Raadt <deraadt@openbsd.org>
 2001-07-09 09:24:06 +00:00
Guy Helmer 7582054e10 Fix the number of bytes allocated by realloc when more space is needed 
for the vector of arguments.

MFC after:	1 week
 2001-06-07 20:05:18 +00:00
Jeroen Ruigrok van der Werven 1debc9f69d Synch: Properly constify sccsid[]. 
Replace bcopy() with memmove().
 2001-02-07 22:25:56 +00:00
Assar Westerlund ba688fa510 (scrub_env): change to only accept a listed set of variables, 
including only non-filename contents for TERMCAP
 2000-12-10 20:50:20 +00:00
David E. O'Brien 1a37aa566b Add `_PATH_DEVZERO'. 
Use _PATH_* where where possible.
 2000-12-09 09:35:55 +00:00
Kris Kennaway 75dd9c65fa Don't use sizeof() on a pointer when we really wanted to measure 
the length of the array.

Noticed by:	Christos Zoulas <christos@ZOULAS.COM>
Obtained from:	OpenBSD
 2000-11-19 10:01:27 +00:00
Kris Kennaway 4147bd4426 Filter out some more magic environment variables used by libraries linked 
with telnetd. This should really be done with a positive filter - i.e.
only allow through a configured list of variables.

Also do some buffer-safety cleanups while I'm here - I don't think these
are exploitable.
 2000-10-31 05:29:54 +00:00
Peter Wemm 7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Jordan K. Hubbard ef4aaceaa0 Back out previous commit - it's not necessary now that tty.h properly includes 
the queue macros.
 1999-08-09 07:51:03 +00:00
Brian Feldman 3452a15dcf Add a missing include (sys/queue.h for sys/tty.h SLIST usage.) 1999-08-09 02:19:38 +00:00
Brian Somers 9e9a43bdec Ensure that things returned by gethostname() and 
friends are terminated and allow for a maximum
host name length of MAXHOSTNAMELEN - 1.
Put parenthesis around sizeof args.
Make some variables static.
Fix telnetd -u (broken by my last commit)

Prompted by: bde
 1999-04-07 08:27:45 +00:00
John Birrell ad12d72a41 Remove a bogus prototype for time() and let time.h do that. 
Change pointer casts from int to long. The code that looks to index -1
of argv is still broken on alpha.
 1998-05-14 10:07:29 +00:00
Warner Losh d3a9dd61ac sprintf->snprintf paranoia. The one thing that looks like a hole in 
the diff is in an ifdef that isn't enabled for FreeBSD.
Obtained from:	OpenBSD(?)
 1997-12-24 19:21:09 +00:00
Philippe Charnier 5f806c3ccf Use err(3). Remove progname and trailing \n in syslog strings. 1997-12-03 07:16:08 +00:00
Peter Wemm 9e522f7a18 Revert $FreeBSD$ to $Id$ 1997-02-22 14:22:49 +00:00
Jordan K. Hubbard 1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$ 
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
 1997-01-14 07:20:47 +00:00
Paul Traina a29e4eaa60 Some buffer overrun fixes and removed check for username starting with "-" 
(replacied it with a getopt stopper (--) instead, which is more correct).

Obtained from: OpenBSD
 1997-01-07 19:00:52 +00:00
Wolfram Schneider 148531ef1e add forgotten $Id$ 1996-09-22 21:56:57 +00:00
Peter Wemm 326bbdd92f Add a ``-P altlogin'' option which allows the sysadmin to specify an 
alternate login(1) type program to run.
 1996-08-13 07:51:45 +00:00
Andrey A. Chernov d7582593f6 Remove LD_NOSTD_PATH unsetenv, isn't exist anymore 1995-10-24 06:50:45 +00:00
Andrey A. Chernov d549e5cc7f Fix original patch error with ! before strncmp 
Zap only needed LD_* variables
 1995-10-20 22:17:35 +00:00
Andrey A. Chernov 68942f23dd Don't allow LD_* env. variables to be tricked 
Submitted by: Sam Hartman <hartmans@mit.edu>
 1995-10-20 17:26:40 +00:00
Paul Traina b74fc1026f Move erase cleanup outside linemode conditional 1995-09-06 02:03:36 +00:00
Paul Traina e22b1cd1ca Properly set the erase character for the login prompt. 
Submitted by:	John Capo <jc@irbs.com> & Peter Wemm
 1995-09-05 17:38:31 +00:00
Andreas Schulz c4dfd14ae0 Fix some typos in a comment BUAD -> BAUD. 1995-08-05 18:16:50 +00:00
Andrey A. Chernov 955db62afa Use the same DECODE_BAUD trick like in new telnetd to obtain 
termios speed.
Obtained from: Pre-Lite2 telnet
 1995-08-02 11:20:05 +00:00
Rodney W. Grimes 6c06b4e2aa Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
Andrey A. Chernov d3e6b9f393 Fix bug: 
When hostname len > 8, name replaced with dot notation when -u flag
not specified (default case).
Use _PATH_* for utmp/wtmp.
 1995-04-26 22:33:15 +00:00
Jordan K. Hubbard 1338e00966 Support for >32 PTYs. 
Submitted by:	Heikki Suonsivu <hsu@cs.hut.fi>
 1995-02-09 11:11:01 +00:00
Guido van Rooij e27eb9e8ec Plug already known security hole. (Brought over from 1.1.5): 
Fixed security problem with telnetd, which allowed
        telnet -l -hcert.org localhost
to change the user's host in utmp.
Thanks to Matthew Green <mrgreen@@mame.mu.oz.au> for showing me this one.


Reviewed by:	karl, guido
Submitted by:	mrgreen@@mame.mu.oz.au
 1994-08-15 20:06:13 +00:00
Rodney W. Grimes ea022d1687 BSD 4.4 Lite Libexec Sources 1994-05-27 12:39:25 +00:00