Commit Graph

44 Commits

Author SHA1 Message Date
Bill Fenner
039d6aa45a Use select() timeouts instead of SIGALRM to schedule packet transmission.
Fixes bin/6649 and removes the last abusive signal handler.
Use SO_TIMESTAMP to get the kernel to timestamp packets on reception.
 Fixes bin/5658 and provides slightly better accuracy.
Explicitly zero and terminate the IP options when using -R.

PR:		bin/5658
PR:		bin/6649
1998-05-25 20:16:05 +00:00
Steve Price
dd033c223d Revert the previous fix. As it turns out Warner Losh is
working a better fix.
1998-05-25 06:53:17 +00:00
Steve Price
a39f52db0f Attempt to stop another DoS attack related to ping flooding.
PR:		6649
Submitted by:	Jason Young <doogie@forbidden-donut.anet-stl.com>
1998-05-25 03:50:51 +00:00
John Birrell
d32ff0376f When a timeval is stored at the beginning of icmp_data, the fields
are unaligned for access by the alpha, so copy the value to a variable
that is aligned.

When checking the returned data, be careful to avoid confusing the
size of the icmp header with the size of a timeval. On i386 these
are both 8, but on alpha, a timeval is 16 bytes. This means that
a packet sent from an alpha contains 48 bytes of data, not 56 like
on i386.
1998-05-16 00:19:27 +00:00
Poul-Henning Kamp
416aa49b70 If ping write fails with short packet count, the
error message prints the two numbers backwards.
PR:		6313
Reviewed by:	phk
Submitted by:	Archie Cobbs
1998-04-15 19:55:14 +00:00
Warner Losh
47b630b949 Add aback in a line a accidentally killed in my last commit.
Submitted by:	Bill Fenner
1998-04-02 04:33:18 +00:00
Eivind Eklund
3aa4b74433 Make this compile (and seemingly work). 1998-04-02 01:12:55 +00:00
Warner Losh
c03e877a88 A fairly rare possible buffer overflow:
Theo fixed this and tqbf reported it
Obtained from: OpenBSD
1998-04-01 00:32:18 +00:00
Philippe Charnier
68085a0ef1 .Sh AUTHOR -> .Sh AUTHORS. Use .An/.Aq. 1998-03-19 07:46:04 +00:00
Warner Losh
b10d9d5f10 Minor style nit noticed by bde. 1997-12-24 00:59:02 +00:00
Bruce Evans
e3d099c303 Fixed DPADD. 1997-12-16 15:03:14 +00:00
Bill Fenner
ff49597ed1 Add an ntohs() and format an IP address with inet_ntoa() when
printing the details of a received ICMP packet.

PR:		bin/3766
Submitted by:	denny1@home.com (Denton Gentry)
1997-08-11 04:33:07 +00:00
Julian Elischer
363d7bbe50 don't lose track of how many packets we've sent
if we get 'host unreachable'. (or any other errors than ENOBUFS)
makes -c work again even if you can't get there..
This really needs a rework..
1997-08-07 02:41:15 +00:00
Bruce Evans
8f975bb321 Cleaned up revisions 1.22 and 1.23.
Fixed minor bugs in revisions 1.12 and 1.23 (variables assigned to in signal
handlers weren't declared as volatile).
1997-07-20 06:09:55 +00:00
Garrett Wollman
3109a91002 Calculate and print out the standard deviation of the round trip times.
This isn't necessarily the best statistic, but it is by far the easiest to
calculate.  Update the man page to be more explicit about precisely which
statistics are printed out.  Revert some of jmg's bogus man page changes from
rev 1.11.
1997-07-18 17:52:05 +00:00
Sean Eric Fagan
a2a0088805 Fix a problem introduced with a recent change that caused a hang with
unreachable hosts.  Note that most of this consists of telling SIGINT
and SIGALRM to interrupt the system call, instead of restarting them.
Also try to get rid of some potential races Bruce didn't like; hopefully
they aren't a problem (potential or otherwise) now.

Reviewed by:	julian
1997-07-13 06:16:44 +00:00
Julian Elischer
0e59c641dc don't count packets as being transmitted when we know that the sendto()
failed (e.g. ENOBUFS)
1997-07-09 20:33:58 +00:00
Julian Elischer
515dd2fa3f ping called printf() from a signal handler..
this is a NO-NO

re-arange to just set a "please die immediatly" flag in the signal handler
and handle this in the normal thread.

also handle ping -f better on slow links by backing off a bit when
we get a ENOBUFFS from the sendto().
1997-07-09 19:40:43 +00:00
Warner Losh
624ff93821 Fix typo introduced in 1.17.
Submitted by:	"Philippe Charnier" <charnier@xp11.frmug.org>
1997-03-04 22:05:49 +00:00
Warner Losh
1ffae4a6dd Check the size of the IP address reutrned from gethostbyname2, per PR
2578 from Julian A.  Likely not strictly needed, but it doesn't hurt
and protects ping against possible buffer overflows if the resolver
were to return large IP addresses.
1997-03-03 09:50:21 +00:00
John-Mark Gurney
50ceac8822 fix man page to use marcos instead of parens, quotes and braces
plus other minor fixes
1997-03-02 23:38:05 +00:00
Warner Losh
ee2bf73496 1) Minor nits in the usage message from bde. I took out the hard tabs and
used spaces to align the second line under the program name.
2) Cache uid after call to setuid(getuid()) so we don't waste a system call
   for each packet with a call to getuid for the -v case.
3) Update manual to reflect new restriction on -l from last delta.

Suggested by:	bde, Bill Fenner
1997-03-02 20:01:13 +00:00
Warner Losh
f78ac61b3a 1) Fix usage to match convention and manual. Fix manual to match usage.
2) Must be root to run preload (OpenBSD ping.c 1.8)
3) Don't print all replies unless verbose and root (from idea in
   OpenBSD ping.c 1.10 and 1.11) to avoid leaking information available
   only to root.
4) Remove unused h: from option string to getopt.
5) Make the compiler happy with exit(0) (Lite-2?)

Reviewed by: Dan Cross <tenser@spitfire.ecsel.psu.edu>

Good candidate for 2.2 and 2.1 (as are many of the 1.17 changes).
1997-03-02 06:32:42 +00:00
Garrett Wollman
43470e3be8 Make ping -Wall clean (except for one warning).
Do a better job of argument parsing.
Don't permit ping -f to a multicast address (very antisocial).
Don't permit -L, -I, -T options with unicast addresses.
Ensure that we ask for only AF_INET addresses (should close PR#2584).
Return <sysexits.h> error codes for failures.  Document this.
Fix man page to identify the author and put sections in correct order.
1997-03-01 20:19:18 +00:00
Peter Wemm
c0ec1f37ef Revert $FreeBSD$ to $Id$ 1997-02-22 14:40:44 +00:00
Daniel O'Callaghan
772dfa7231 Reviewed by: Gary Jennejohn <gj@freebsd.org>
Submitted by:	Bruce Murphy <packrat@iinet.net.au>

Add '-a' audible flag, so terminal will beep upon receipt of a reply
packet.  Useful for debugging ethernet runs, among other things.
1997-02-08 01:43:56 +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
Bill Fenner
854569350f Add multicast options -I (source interface), -T (set ttl), -L (no loopback).
They were all lowercase in the original, but our ping already uses -i and
-l so I made them all uppercase.

Obtained from:	Multicast release 3.5
1996-12-15 23:41:29 +00:00
Bruce Evans
7d81b35c91 Cleaned up recent SIGINFO changes.
Simplified average calculations.  This also fixes potential overflow errors
and minor rounding inconsistencies (always round to nearest now).

Don't lose more SIGINFOs than necessary.

Print \r at the start of the status message.  This clears the dots that
are sometimes left by ping -f.

Reviewed by:	sef
1996-12-10 14:41:22 +00:00
Paul Traina
f6bd468bf0 Fix typo in last patch. empty!=emtpy 1996-12-08 06:27:09 +00:00
Sean Eric Fagan
37e5b2c618 Change how SIGINFO is handled -- set a flag (of sig_atomic_t), and check
that flag on every iteration of the loop.  This avoids calling fprintf
inside a signal handler, which is always somewhat icky.

Reviewed by:	bde
1996-12-07 20:20:41 +00:00
Bill Fenner
0b71f5af34 Fix math in SIGINFO printer. 1996-12-02 21:42:11 +00:00
Sean Eric Fagan
4055611a53 Move the terminal handling code to a later location; this allows
the signal handlers to be set up; it also means that a failed name lookup
won't mess up the nokerninfo setting of the tty.

Reviewed by:	pst, nate
1996-11-19 03:32:32 +00:00
Bruce Evans
2ceaae21e9 Fixed backgrounding of ping, which was broken by the ^T changes in rev.1.3. 1996-11-04 17:25:03 +00:00
Wolfram Schneider
e83201b43a delete doubled words, e.g.: "the the" -> "the" 1996-10-05 22:27:30 +00:00
Bill Fenner
ef9e6dc7ee Print out ICMP errors that are responses to our own packets by default.
Turn this behavior off using '-Q'.  This makes '-v' useless other than as
an ICMP-sniffer, which tcpdump is better at anyway.

Print out another couple of ICMP messages, and fix the printing of the
original packet (mostly byte order problems).
1996-08-20 23:50:16 +00:00
Bill Fenner
f1284d7a51 Drop setuid ASAP, to minimize code executed as root.
Reviewed by:	pst
1996-08-09 06:00:53 +00:00
Peter Wemm
efa3853949 Limit the risk of `buf' overrun in ping.c when printing hostnames.
Note, this is not really a security risk, because the buffer in question
is a static variable in the data segment and not on the stack, and hence
cannot subert the flow of execution in any way.  About the worst case was
that if you pinged a long hostname, ping could coredump.

Pointed out on: bugtraq  (listserv@netspace.org)
1996-07-28 20:29:10 +00:00
Rodney W. Grimes
5ebc7e6281 Remove trailing whitespace. 1995-05-30 06:12:45 +00:00
David Greenman
6e1173dc29 In past releases of FreeBSD, I have used the exit status of "ping" to
determine whether a connection to a given machine is up or not.

In FreeBSD 2.0 (and therefore, I assume, BSD 4.4) the exit code of ping
is always zero, even if no packets were received.

I would like to propose the following change to /usr/src/sbin/ping/ping.c
to restore this useful behaviour:

Submitted by:	Denis Fortin
1994-11-29 16:09:56 +00:00
Sean Eric Fagan
badd813805 Reviewed by: jkh
Print out summary information on receipt of SIGINFO; also, stop the
kernel printing of information and restore it on exit.  Now, it needs
an option to be quiet. ;)
1994-10-22 17:30:35 +00:00
David Greenman
d410b6f150 Changed output formatting to accurately represent the precision. 1994-08-05 10:34:19 +00:00
Garrett Wollman
404c1a5fc1 Convert to our man installation style. Also fixed long-standing bug
in `fastboot'/`fasthalt' in which the interpreter would hang around
after `reboot' or `halt' is run, causing an irritating ``Killed'' message.
1994-08-05 02:42:42 +00:00
Rodney W. Grimes
8fae3551ec BSD 4.4 Lite sbin Sources
Note:  XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.
1994-05-26 06:35:07 +00:00