diff options
Diffstat (limited to 'sbin/ping/ping.c')
| -rw-r--r-- | sbin/ping/ping.c | 34 |
1 files changed, 8 insertions, 26 deletions
diff --git a/sbin/ping/ping.c b/sbin/ping/ping.c index 91d1eaca3ab..9b2181143ee 100644 --- a/sbin/ping/ping.c +++ b/sbin/ping/ping.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ping.c,v 1.34 1998/05/16 21:14:17 angelos Exp $ */ +/* $OpenBSD: ping.c,v 1.35 1998/05/17 01:46:51 angelos Exp $ */ /* $NetBSD: ping.c,v 1.20 1995/08/11 22:37:58 cgd Exp $ */ /* @@ -47,7 +47,7 @@ static char copyright[] = #if 0 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93"; #else -static char rcsid[] = "$OpenBSD: ping.c,v 1.34 1998/05/16 21:14:17 angelos Exp $"; +static char rcsid[] = "$OpenBSD: ping.c,v 1.35 1998/05/17 01:46:51 angelos Exp $"; #endif #endif /* not lint */ @@ -156,7 +156,6 @@ long nreceived; /* # of packets we got back */ long nrepeats; /* number of duplicates */ long ntransmitted; /* sequence # for outbound packets = #sent */ int interval = 1; /* interval between packets */ -volatile time_t lasttime; /* avoid DOS attack that involves SIGALRMs */ /* timing */ int timing; /* flag to do timing */ @@ -214,8 +213,6 @@ main(argc, argv) setuid(getuid()); preload = 0; - lasttime = 0; - datap = &outpack[8 + sizeof(struct tvi)]; while ((ch = getopt(argc, argv, "DI:LRS:c:dfh:i:l:np:qrs:T:t:vw:")) != -1) switch(ch) { @@ -524,36 +521,21 @@ catcher() { int waittime; int save_errno = errno; - time_t timenow; - - if (nreceived) { - waittime = 2 * tmax / 1000000; - if (!waittime) - waittime = 1; - } else - waittime = maxwait; - - /* - * Die if SIGALRM is caught earlier than it should have been. This - * is usually the result of someone sending thousands of SIGALRMs - * in an attempt to simulate a ping -f (flood). - */ - - if (time((time_t *)&timenow) < lasttime + waittime) - exit(0); - - lasttime = timenow; pinger(); - (void)signal(SIGALRM, catcher); if (!npackets || ntransmitted < npackets) alarm((u_int)interval); else { + if (nreceived) { + waittime = 2 * tmax / 1000000; + if (!waittime) + waittime = 1; + } else + waittime = maxwait; (void)signal(SIGALRM, finish); (void)alarm((u_int)waittime); } - errno = save_errno; } |