This is pppkill.c in view mode; [Download] [Up]
Many thanks to:
shess@winternet.com (Scott Hess)
andrew_abernathy@wire.seanet.com (Andrew Abernathy)
michal@ellpspace.math.ualberta.ca (Michal Jaegermann)
for contributing programs that can take the place
of the pppdown script. I have included Scott Hess's
(now modified) here. If you would like to see the other program, please
mail Andrew.
======================================================================
From shess@winternet.com Mon Jan 9 02:45 EST 1995
Date: Mon, 9 Jan 95 01:45 CST
From: shess@winternet.com (Scott Hess)
Reply-To: shess@winternet.com (Scott Hess)
To: Steve Perkins <perkins@cps.msu.edu>
Subject: Bringing down ppp.
[munch]
In any case, having to run pppdown as root has been annoying,
because I don't like to run things as root more than necessary.
In other words, more than about once a week is too often :-). So,
I wrote the following quick&dirty hack. Basic operation is to read
the pppd pid from a file where it's stored and send a SIGINT to
that process. Since there's not a shell script in sight, this
should be a reasonably safe program to make setuid root. [I'll
have to think on what someone can do if they crack it or /etc/ppp
and can send SIGINT to just anyone. Perhaps it should check to
see if the process is really a pppd? Oh, well.]
howard:/tmp> ls -l /usr/local/ppp/bin/killppp
-rwsr-sr-x 1 root 1464 Jan 7 12:41 /usr/local/ppp/bin/killppp*
howard:/tmp> cat /usr/local/ppp/src/killppp.c
/*
* Originally written by Scott Hess <shess@winternet.com>
* and later modified by Michal Jaegermann <michal@ellpspace.math.ualberta.ca>
*/
#include <libc.h>
#include <stdio.h>
#include <libc.h>
#include <stdio.h>
#define PIDF "/etc/ppp/ppp0.pid"
int
main( void)
{
FILE *ff;
int pid;
if( NULL == (ff = fopen( PIDF, "r"))) {
perror( "opening " PIDF
"\nppp0 link does not seem to be active" );
exit(1);
}
if( fscanf( ff, "%d", &pid)<1) {
fprintf( stderr, "Cannot read pid from" PIDF "\n");
exit(1);
}
fclose( ff);
if( kill( pid, SIGINT)==-1) {
perror( "killing pppd");
fprintf( stderr, "removing stale" PIDF "file\n");
if (0 != unlink( PIDF)) {
perror("cannot remove" PIDF);
}
exit(1);
}
return 0;
}
Later,
---
scott hess <shess@winternet.com> (WWW to "http://www.winternet.com/~shess/")
Home: 12901 Upton Avenue South, #326 Burnsville, MN 55337 (612) 895-1208
Office: 101 W. Burnsville Pkwy, Suite 108E, Burnsville, MN 55337 890-1332
<?If you haven't the time to design, where will you find the time to debug?>
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.