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Don't run if ppp.conf is writable.

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This commit is contained in:
brian 1997-11-13 15:35:06 +00:00
parent 2fb9c5f228
commit 0ab602e14e
1 changed files with 17 additions and 1 deletions
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18
usr.sbin/ppp/main.c
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@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: main.c,v 1.96 1997/11/13 14:43:18 brian Exp $
* $Id: main.c,v 1.97 1997/11/13 14:44:06 brian Exp $
*
* TODO:
* o Add commands for traffic summary, version display, etc.
@ -69,6 +69,7 @@
#include "main.h"
#include "vjcomp.h"
#include "async.h"
#include "pathnames.h"
#ifndef O_NONBLOCK
#ifdef O_NDELAY
@ -356,6 +357,21 @@ main(int argc, char **argv)
VarTerm = stdout;
ID0init();
if (ID0realuid() != 0) {
char conf[200], *ptr;
snprintf(conf, sizeof conf, "%s/%s", _PATH_PPP, CONFFILE);
do {
if (!access(conf, W_OK)) {
LogPrintf(LogALERT, "ppp: Access violation: Please protect %s\n", conf);
return -1;
}
ptr = conf + strlen(conf)-2;
while (ptr > conf && *ptr != '/')
*ptr-- = '\0';
} while (ptr >= conf);
}
if (!ValidSystem(GetLabel())) {
fprintf(stderr, "You may not use ppp in this mode with this label\n");
if (mode & MODE_DIRECT) {