embedaddon/arping/src/arping.c - diff

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Diff for /embedaddon/arping/src/arping.c between versions 1.1 and 1.1.1.2

version 1.1, 2012/02/21 22:16:27	version 1.1.1.2, 2014/06/15 16:26:43
Line 2	Line 2
*	*
* arping	* arping
*	*
* By Thomas Habets <thomas@habets.pp.se>	* By Thomas Habets <thomas@habets.se>
*	*
* ARP 'ping' utility	* ARP 'ping' utility
*	*
Line 11	Line 11
* you don't yet have routing to. Then again, if you have no idea what I'm	* you don't yet have routing to. Then again, if you have no idea what I'm
* talking about then you prolly don't need it.	* talking about then you prolly don't need it.
*	*
* Also finds out IP of specified MAC	* Also finds out IP of specified MAC.
*	*
*/	*/
/*	/*
* Copyright (C) 2000-2010 Thomas Habets <thomas@habets.pp.se>	* Copyright (C) 2000-2011 Thomas Habets <thomas@habets.se>
*	*
* This library is free software; you can redistribute it and/or	* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public	* modify it under the terms of the GNU General Public
Line 37	Line 37

#include <stdio.h>	#include <stdio.h>
#include <stdlib.h>	#include <stdlib.h>
	#include <limits.h>
	#include <math.h>
#include <poll.h>	#include <poll.h>

#if HAVE_UNISTD_H	#if HAVE_UNISTD_H
Line 51	Line 53
#include <inttypes.h>	#include <inttypes.h>
#endif	#endif

	#if HAVE_TIME_H
	#include <time.h>
	#endif

#if HAVE_SYS_TIME_H	#if HAVE_SYS_TIME_H
#include <sys/time.h>	#include <sys/time.h>
#endif	#endif
Line 78	Line 84
#if HAVE_WIN32_LIBNET_H	#if HAVE_WIN32_LIBNET_H
#include <win32/libnet.h>	#include <win32/libnet.h>
#endif	#endif
#include <pcap.h>

#if HAVE_NET_BPF_H	#if HAVE_NET_BPF_H
#include <net/bpf.h>	#include <net/bpf.h>
#endif	#endif
	#include <pcap.h>

	#include "arping.h"

#ifndef ETH_ALEN	#ifndef ETH_ALEN
#define ETH_ALEN 6	#define ETH_ALEN 6
#endif	#endif
Line 96	Line 104
#define WIN32 0	#define WIN32 0
#endif	#endif

	#ifndef CLOCK_MONOTONIC
	#define CLOCK_MONOTONIC CLOCK_REALTIME
	#endif

/**	/**
* OS-specific interface finding using routing table. See findif_*.c	* OS-specific interface finding using routing table. See findif_*.c
*/	*/
const char *	const char *
arping_lookupdev(const char *ifname,	arping_lookupdev(uint32_t srcip, uint32_t dstip, char *ebuf);
uint32_t srcip,
uint32_t dstip,
char *ebuf);

	const char *
	arping_lookupdev_default(uint32_t srcip, uint32_t dstip, char *ebuf);

static const char version = VERSION; / from autoconf */	static const char version = VERSION; / from autoconf */

static libnet_t *libnet = 0;	static libnet_t *libnet = 0;

static struct timeval lastpacketsent;	static struct timespec lastpacketsent;

uint32_t srcip, dstip;	/* target string */
	static char *target = "huh? bug in arping?";

static int beep = 0;	/*
static int reverse_beep = 0;	* Ping IP mode: cmdline target
static int verbose = 0;	* Ping MAC mode: 255.255.255.255, override with -T
static int alsototal = 0;	*/
/static int pingmac = 0; /	static uint32_t dstip;
static int finddup = 0;
static int dupfound = 0;	/*
static unsigned int numsent = 0;	* Ping IP mode: ethxmas, override with -t
static unsigned int numrecvd = 0;	* Ping MAC mode: cmdline target
static unsigned int numdots = 0;	*/
static int addr_must_be_same = 0;	static uint8_t dstmac[ETH_ALEN];

	static uint32_t srcip; /* autodetected, override with -S/-b/-0 */
	static uint8_t srcmac[ETH_ALEN]; /* autodetected, override with -s */

	static int beep = 0; /* beep when reply is received. -a */
	static int reverse_beep = 0; /* beep when expected reply absent. -e */
	static int alsototal = 0; /* print sent as well as received. -u */
	static int addr_must_be_same = 0; /* -A */
	static int unsolicited = 0; /* -U */

	static int finddup = 0; /* finddup mode. -d */
	static int dupfound = 0; /* set to 1 if dup found */
	static char lastreplymac[ETH_ALEN]; /* if last different from this then dup */

	static unsigned int numsent = 0; /* packets sent */
	static unsigned int numrecvd = 0; /* packets received */
	static unsigned int numdots = 0; /* dots that should be printed */

	static double stats_min_time = -1;
	static double stats_max_time = -1;
	static double stats_total_time = 0;
	static double stats_total_sq_time = 0;

/* RAWRAW is RAW\|RRAW */	/* RAWRAW is RAW\|RRAW */
static enum { NORMAL, QUIET, RAW, RRAW, RAWRAW, DOT } display = NORMAL;	static enum { NORMAL, /* normal output */
static char *target = "huh? bug in arping?";	QUIET, /* No output. -q */
static uint8_t ethnull[ETH_ALEN];	RAW, /* Print MAC when pinging IP. -r */
static uint8_t ethxmas[ETH_ALEN];	RRAW, /* Print IP when pinging IP. -R */
static char srcmac[ETH_ALEN];	RAWRAW, /* Print both. -r and -R */
static char dstmac[ETH_ALEN];	DOT /* Print '.' and '!', Cisco-style. -D */
static char lastreplymac[ETH_ALEN];	} display = NORMAL;

/* doesn't need to be volatile */	static const uint8_t ethnull[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
volatile int time_to_die = 0;	static const uint8_t ethxmas[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

	int verbose = 0; /* Increase with -v */

	/* Doesn't really need to be volatile, but doesn't hurt. */
	static volatile sig_atomic_t time_to_die = 0;

/**	/**
	* Some stupid OSs (Solaris) think it's a good idea to put network
	* devices in /dev and then play musical chairs with them.
*	*
	* Since libpcap doesn't seem to have a workaround for that, here's arpings
	* workaround.
	*
	* E.g. if the network interface is called net0, pcap will fail because it
	* fails to open /dev/net, because it's a directory.
*/	*/
	static pcap_t*
	do_pcap_open_live(const char *device, int snaplen,
	int promisc, int to_ms, char *errbuf)
	{
	pcap_t* ret;
	char buf[PATH_MAX];

	if ((ret = pcap_open_live(device, snaplen, promisc, to_ms, errbuf))) {
	return ret;
	}

	snprintf(buf, sizeof(buf), "/dev/%s", device);
	if ((ret = pcap_open_live(buf, snaplen, promisc, to_ms, errbuf))) {
	return ret;
	}

	snprintf(buf, sizeof(buf), "/dev/net/%s", device);
	if ((ret = pcap_open_live(buf, snaplen, promisc, to_ms, errbuf))) {
	return ret;
	}

	/* Call original again to reset the error message. */
	return pcap_open_live(device, snaplen, promisc, to_ms, errbuf);
	}

	/**
	*
	*/
static void	static void
count_missing_dots()	count_missing_dots()
{	{
Line 149 count_missing_dots()	Line 225 count_missing_dots()
}	}

/**	/**
*	* Init libnet with specified ifname. Destroy if already inited.
*/	*/
void	void
do_libnet_init(const char *ifname)	do_libnet_init(const char *ifname)
{	{
char ebuf[LIBNET_ERRBUF_SIZE];	char ebuf[LIBNET_ERRBUF_SIZE];
if (verbose > 1) {	if (verbose > 1) {
printf("libnet_init(%s)\n", ifname?ifname:"<null>");	printf("libnet_init(%s)\n", ifname ? ifname : "<null>");
}	}
if (libnet) {	if (libnet) {
/* prolly going to switch interface from temp to real */	/* Probably going to switch interface from temp to real. */
libnet_destroy(libnet);	libnet_destroy(libnet);
libnet = 0;	libnet = 0;
}	}
if (getuid() && geteuid()) {
fprintf(stderr, "arping: must run as root\n");
exit(1);
}

	/* Try libnet_init() even though we aren't root. We may have
	* a capability or something. */
if (!(libnet = libnet_init(LIBNET_LINK,	if (!(libnet = libnet_init(LIBNET_LINK,
(char*)ifname,	(char*)ifname,
ebuf))) {	ebuf))) {
fprintf(stderr, "arping: libnet_init(): %s\n", ebuf);	fprintf(stderr, "arping: %s\n", ebuf);
	if (getuid() && geteuid()) {
	fprintf(stderr,
	"arping: you may need to run as root\n");
	}
exit(1);	exit(1);
}	}
}	}
Line 179 do_libnet_init(const char *ifname)	Line 257 do_libnet_init(const char *ifname)
/**	/**
*	*
*/	*/
const char *	void
arping_lookupdev_default(const char *ifname,	sigint(int i)
uint32_t srcip, uint32_t dstip,
char *ebuf)
{	{
#if WIN32
WCHAR buf[LIBNET_ERRBUF_SIZE + PCAP_ERRBUF_SIZE];
WCHAR* ret = (WCHAR)pcap_lookupdev((char)buf);
if (ret != NULL) {
wcstombs(ebuf, ret, LIBNET_ERRBUF_SIZE + PCAP_ERRBUF_SIZE);
return ebuf;
}
return NULL;
#else
return pcap_lookupdev(ebuf);
#endif
}

#if WIN32
static BOOL WINAPI arping_console_ctrl_handler(DWORD dwCtrlType)
{
if(verbose) {
printf("arping_console_ctrl_handler( %d )\n", (int)dwCtrlType);
}
time_to_die = 1;	time_to_die = 1;

#if 0
/* if SetConsoleCtrlHandler() does what I think, this isn't needed */
if (display == NORMAL) {
printf("\n--- %s statistics ---\n"
"%d packets transmitted, %d packets received, %3.0f%% "
"unanswered\n",target,numsent,numrecvd,
100.0 - 100.0 * (float)(numrecvd)/(float)numsent);
}
#endif
return TRUE;
}	}
#endif


/**	/**
*	* idiot-proof clock_gettime() wrapper
*/	*/
static void sigint(int i)	static void
	getclock(struct timespec *ts)
{	{
time_to_die = 1;	#if HAVE_CLOCK_MONOTONIC
	if (-1 == clock_gettime(CLOCK_MONOTONIC, ts)) {
	fprintf(stderr,
	"arping: clock_gettime(): %s\n",
	strerror(errno));
	sigint(0);
	}
	#else
	struct timeval tv;
	if (-1 == gettimeofday(&tv, NULL)) {
	fprintf(stderr, "arping: gettimeofday(): %s\n",
	strerror(errno));
	sigint(0);
	}
	ts->tv_sec = tv.tv_sec;
	ts->tv_nsec = tv.tv_usec * 1000;
	#endif
}	}

/**	/**
Line 252 extended_usage()	Line 313 extended_usage()
" -d Find duplicate replies. Exit with 1 if there are "	" -d Find duplicate replies. Exit with 1 if there are "
"answers from\n"	"answers from\n"
" two different MAC addresses.\n"	" two different MAC addresses.\n"
" -D Display answers as dots and missing packets as exclamation points.\n"	" -D Display answers as exclamation points and missing packets as dots.\n"
" -e Like -a but beep when there is no reply.\n"	" -e Like -a but beep when there is no reply.\n"
" -F Don't try to be smart about the interface name. (even if this\n"	" -F Don't try to be smart about the interface name. (even if this\n"
" switch is not given, -i overrides smartness)\n"	" switch is not given, -i overrides smartness)\n"
Line 280 extended_usage()	Line 341 extended_usage()
" \"own\" the MAC address you are using.\n"	" \"own\" the MAC address you are using.\n"
" -u Show index=received/sent instead of just index=received when\n"	" -u Show index=received/sent instead of just index=received when\n"
" pinging MACs.\n"	" pinging MACs.\n"
	" -U Send unsolicited ARP.\n"
" -v Verbose output. Use twice for more messages.\n"	" -v Verbose output. Use twice for more messages.\n"
" -w Time to wait between pings, in microseconds.\n");	" -w Time to wait between pings, in microseconds.\n");
printf("Report bugs to: thomas@habets.pp.se\n"	printf("Report bugs to: thomas@habets.se\n"
"Arping home page: <http://www.habets.pp.se/synscan/>\n"	"Arping home page: <http://www.habets.pp.se/synscan/>\n"
"Development repo: http://github.com/ThomasHabets/arping\n");	"Development repo: http://github.com/ThomasHabets/arping\n");
}	}
Line 293 extended_usage()	Line 355 extended_usage()
static void	static void
standard_usage()	standard_usage()
{	{
printf("ARPing %s, by Thomas Habets <thomas@habets.pp.se>\n",	printf("ARPing %s, by Thomas Habets <thomas@habets.se>\n",
version);	version);
printf("usage: arping [ -0aAbdDeFpqrRuv ] [ -w <us> ] "	printf("usage: arping [ -0aAbdDeFpqrRuUv ] [ -w <us> ] "
"[ -S <host/ip> ]\n"	"[ -S <host/ip> ]\n"
" "	" "
"[ -T <host/ip ] "	"[ -T <host/ip ] "
Line 387 static int get_mac_addr(const char *in,	Line 449 static int get_mac_addr(const char *in,
}	}

/**	/**
* as always, the answer is 42
*	*
* in this case the question is how many bytes buf needs to be.	*/
* Assuming a 33 byte max %d	static void
	update_stats(double sample)
	{
	if (stats_min_time < 0 \|\| sample < stats_min_time) {
	stats_min_time = sample;
	}
	if (sample > stats_max_time) {
	stats_max_time = sample;
	}
	stats_total_time += sample;
	stats_total_sq_time += sample * sample;
	}

	/**
*	*
	*/
	static double
	timespec2dbl(const struct timespec *tv)
	{
	return tv->tv_sec + (double)tv->tv_nsec / 1000000000;
	}

	/**
	* max size of buffer is intsize + 1 + intsize + 4 = 70 bytes or so
	*
* Still, I'm using at least 128bytes below	* Still, I'm using at least 128bytes below
*	*
* (because snprintf() sadly isn't as portable, that's why)	* (because snprintf() sadly isn't as portable, that's why)
*/	*/
static char tv2str(const struct timeval tv, const struct timeval *tv2,	static char ts2str(const struct timespec tv, const struct timespec *tv2,
char *buf)	char *buf)
{	{
double f,f2;	double f,f2;
int exp = 0;	int exp = 0;

f = tv->tv_sec + (double)tv->tv_usec / 1000000;	f = timespec2dbl(tv);
f2 = tv2->tv_sec + (double)tv2->tv_usec / 1000000;	f2 = timespec2dbl(tv2);
f = (f2 - f) * 1000000;	f = (f2 - f) * 1000000000;
while (f > 1000) {	while (f > 1000) {
exp+= 3;	exp += 3;
f /= 1000;	f /= 1000;
}	}
switch (exp) {	switch (exp) {
case 0:	case 0:
sprintf(buf, "%.3f usec", f);	sprintf(buf, "%.3f nsec", f);
break;	break;
case 3:	case 3:
sprintf(buf, "%.3f msec", f);	sprintf(buf, "%.3f usec", f);
break;	break;
case 6:	case 6:
sprintf(buf, "%.3f sec", f);	sprintf(buf, "%.3f msec", f);
break;	break;
case 9:	case 9:
	sprintf(buf, "%.3f sec", f);
	break;
	case 12:
sprintf(buf, "%.3f sec", f*1000);	sprintf(buf, "%.3f sec", f*1000);
break;	break;
default:	default:
/* huh, uh, huhuh */	/* huh, uh, huhuh */
sprintf(buf, "%.3fe%d sec", f, exp-6);	sprintf(buf, "%.3fe%d sec", f, exp-9);
}	}
return buf;	return buf;
}	}
Line 433 static char tv2str(const struct timeval tv, const st	Line 520 static char tv2str(const struct timeval tv, const st

/** Send directed IPv4 ICMP echo request.	/** Send directed IPv4 ICMP echo request.
*	*
* \param srcmac Source MAC. From -s switch or autodetected
* \param dstmac Destination/target MAC. Target command line.
* \param srcip From -S switch or autodetected
* \param dstip From -D switch, or 255.255.255.255
* \param id IP id	* \param id IP id
* \param seq Ping seq	* \param seq Ping seq
*/	*/
static void	static void
pingmac_send(uint8_t srcmac, uint8_t dstmac,	pingmac_send(uint16_t id, uint16_t seq)
uint32_t srcip, uint32_t dstip,
uint16_t id, uint16_t seq)
{	{
static libnet_ptag_t icmp = 0, ipv4 = 0,eth=0;	static libnet_ptag_t icmp = 0, ipv4 = 0,eth=0;
int c;	int c;
Line 491 pingmac_send(uint8_t srcmac, uint8_t dstmac,	Line 572 pingmac_send(uint8_t srcmac, uint8_t dstmac,
libnet_geterror(libnet));	libnet_geterror(libnet));
sigint(0);	sigint(0);
}	}
if(verbose>1) {	if (verbose > 1) {
if (-1 == gettimeofday(&lastpacketsent, NULL)) {	getclock(&lastpacketsent);
fprintf(stderr, "arping: gettimeofday(): %s\n",	printf("arping: sending packet at time %ld.%09ld\n",
strerror(errno));	(long)lastpacketsent.tv_sec,
sigint(0);	(long)lastpacketsent.tv_nsec);
}
printf("arping: sending packet at time %d %d\n",
lastpacketsent.tv_sec,
lastpacketsent.tv_usec);
}	}
if (-1 == (c = libnet_write(libnet))) {	if (-1 == (c = libnet_write(libnet))) {
fprintf(stderr, "arping: libnet_write(): %s\n",	fprintf(stderr, "arping: libnet_write(): %s\n",
libnet_geterror(libnet));	libnet_geterror(libnet));
sigint(0);	sigint(0);
}	}
if (-1 == gettimeofday(&lastpacketsent, NULL)) {	getclock(&lastpacketsent);
fprintf(stderr, "arping: gettimeofday(): %s\n",
strerror(errno));
sigint(0);
}
numsent++;	numsent++;
}	}

/** Send ARP who-has.	/** Send ARP who-has.
*	*
* \param srcmac -s or autodetected
* \param dstmac -t or ff:ff:ff:ff:ff:ff
* \param srcip -S or autodetected
* \param dstip -T or or cmdline
*
*/	*/
static void	static void
pingip_send(uint8_t srcmac, uint8_t dstmac,	pingip_send()
uint32_t srcip, uint32_t dstip)
{	{
static libnet_ptag_t arp=0,eth=0;	static libnet_ptag_t arp=0,eth=0;
if (-1 == (arp = libnet_build_arp(ARPHRD_ETHER,	if (-1 == (arp = libnet_build_arp(ARPHRD_ETHER,
Line 534 pingip_send(uint8_t srcmac, uint8_t dstmac,	Line 601 pingip_send(uint8_t srcmac, uint8_t dstmac,
ARPOP_REQUEST,	ARPOP_REQUEST,
srcmac,	srcmac,
(uint8_t*)&srcip,	(uint8_t*)&srcip,
ethnull,	unsolicited ? (uint8_t)ethxmas : (uint8_t)ethnull,
(uint8_t*)&dstip,	(uint8_t*)&dstip,
NULL,	NULL,
0,	0,
Line 555 pingip_send(uint8_t srcmac, uint8_t dstmac,	Line 622 pingip_send(uint8_t srcmac, uint8_t dstmac,
libnet_geterror(libnet));	libnet_geterror(libnet));
sigint(0);	sigint(0);
}	}
if(verbose>1) {	if (verbose > 1) {
if (-1 == gettimeofday(&lastpacketsent, NULL)) {	getclock(&lastpacketsent);
fprintf(stderr, "arping: gettimeofday(): %s\n",	printf("arping: sending packet at time %ld.%09ld\n",
strerror(errno));	(long)lastpacketsent.tv_sec,
sigint(0);	(long)lastpacketsent.tv_nsec);
}
printf("arping: sending packet at time %d %d\n",
lastpacketsent.tv_sec,
lastpacketsent.tv_usec);
}	}
if (-1 == libnet_write(libnet)) {	if (-1 == libnet_write(libnet)) {
fprintf(stderr, "arping: libnet_write(): %s\n",	fprintf(stderr, "arping: libnet_write(): %s\n",
libnet_geterror(libnet));	libnet_geterror(libnet));
sigint(0);	sigint(0);
}	}
if (-1 == gettimeofday(&lastpacketsent, NULL)) {	getclock(&lastpacketsent);
fprintf(stderr, "arping: gettimeofday(): %s\n",
strerror(errno));
sigint(0);
}
numsent++;	numsent++;
}	}

Line 584 pingip_send(uint8_t srcmac, uint8_t dstmac,	Line 643 pingip_send(uint8_t srcmac, uint8_t dstmac,
* \param packet packet data	* \param packet packet data
*/	*/
static void	static void
pingip_recv(const char unused, struct pcap_pkthdr h,	pingip_recv(const char unused, struct pcap_pkthdr h, uint8_t *packet)
uint8_t *packet)
{	{
struct libnet_802_3_hdr *heth;	struct libnet_802_3_hdr *heth;
struct libnet_arp_hdr *harp;	struct libnet_arp_hdr *harp;
struct timeval arrival;	struct timespec arrival;
int c;	int c;

if(verbose>2) {	if (verbose > 2) {
printf("arping: received response for ip ping\n");	printf("arping: received response for ip ping\n");
}	}

if (-1 == gettimeofday(&arrival, NULL)) {	getclock(&arrival);
fprintf(stderr, "arping: gettimeofday(): %s\n",
strerror(errno));
sigint(0);
}
heth = (void*)packet;	heth = (void*)packet;
harp = (void)((char)heth + LIBNET_ETH_H);	harp = (void)((char)heth + LIBNET_ETH_H);

Line 616 pingip_recv(const char unused, struct pcap_pkthdr h,	Line 671 pingip_recv(const char unused, struct pcap_pkthdr h,
return;	return;
}	}
if (dstip == ip) {	if (dstip == ip) {
	update_stats(timespec2dbl(&arrival)
	- timespec2dbl(&lastpacketsent));
switch(display) {	switch(display) {
case DOT:	case DOT:
numdots++;	numdots++;
Line 637 pingip_recv(const char unused, struct pcap_pkthdr h,	Line 694 pingip_recv(const char unused, struct pcap_pkthdr h,
printf("/%u", numsent-1);	printf("/%u", numsent-1);
}	}
printf(" time=%s",	printf(" time=%s",
tv2str(&lastpacketsent,	ts2str(&lastpacketsent,
&arrival,buf));	&arrival,buf));
break; }	break;
	}
case QUIET:	case QUIET:
break;	break;
case RAWRAW:	case RAWRAW:
Line 691 pingip_recv(const char unused, struct pcap_pkthdr h,	Line 749 pingip_recv(const char unused, struct pcap_pkthdr h,
* \param packet packet data	* \param packet packet data
*/	*/
static void	static void
pingmac_recv(const char unused, struct pcap_pkthdr h,	pingmac_recv(const char unused, struct pcap_pkthdr h, uint8_t *packet)
uint8_t *packet)
{	{
struct libnet_802_3_hdr *heth;	struct libnet_802_3_hdr *heth;
struct libnet_ipv4_hdr *hip;	struct libnet_ipv4_hdr *hip;
struct libnet_icmpv4_hdr *hicmp;	struct libnet_icmpv4_hdr *hicmp;
struct timeval arrival;	struct timespec arrival;
int c;	int c;

if(verbose>2) {	if(verbose>2) {
printf("arping: received response for mac ping\n");	printf("arping: received response for mac ping\n");
}	}

if (-1 == gettimeofday(&arrival, NULL)) {	getclock(&arrival);
fprintf(stderr, "arping: gettimeofday(): %s\n",
strerror(errno));
sigint(0);
}

heth = (void*)packet;	heth = (void*)packet;
hip = (void)((char)heth + LIBNET_ETH_H);	hip = (void)((char)heth + LIBNET_ETH_H);
Line 725 pingmac_recv(const char unused, struct pcap_pkthdr h	Line 778 pingmac_recv(const char unused, struct pcap_pkthdr h
return;	return;
}	}
}	}
	update_stats(timespec2dbl(&arrival)
	- timespec2dbl(&lastpacketsent));
switch(display) {	switch(display) {
case QUIET:	case QUIET:
break;	break;
Line 737 pingmac_recv(const char unused, struct pcap_pkthdr h	Line 792 pingmac_recv(const char unused, struct pcap_pkthdr h
(c<5)?':':')');	(c<5)?':':')');
}	}
printf(": icmp_seq=%d time=%s",	printf(": icmp_seq=%d time=%s",
htons(hicmp->icmp_seq),tv2str(&lastpacketsent,	htons(hicmp->icmp_seq),ts2str(&lastpacketsent,
&arrival,buf));	&arrival,buf));
break; }	break; }
case RAW:	case RAW:
printf("%s",	printf("%s",
Line 769 pingmac_recv(const char unused, struct pcap_pkthdr h	Line 824 pingmac_recv(const char unused, struct pcap_pkthdr h
}	}
}	}


#if WIN32
/**	/**
* untested for a long time. Maybe since arping 2.05 or so.	* while negative nanoseconds, take from whole seconds.
*/
static void
ping_recv_win32(pcap_t *pcap,uint32_t packetwait, pcap_handler func)
{
struct timeval tv,tv2;
char done = 0;
/* windows won't let us do select() */
if (-1 == gettimeofday(&tv2,NULL)) {
fprintf(stderr, "arping: gettimeofday(): %s\n",
strerror(errno));
sigint(0);
}
while (!done && !time_to_die) {
struct pcap_pkthdr *pkt_header;
u_char *pkt_data;
if (pcap_next_ex(pcap, &pkt_header, &pkt_data) == 1) {
func(pcap, pkt_header, pkt_data);
}
if (-1 == gettimeofday(&tv,NULL)) {
fprintf(stderr, "arping: "
"gettimeofday(): %s\n",
strerror(errno));
sigint(0);
}
/*
* setup next timeval, not very exact
*/
tv.tv_sec = (packetwait / 1000000)
- (tv.tv_sec - tv2.tv_sec);
tv.tv_usec = (packetwait % 1000000)
- (tv.tv_usec - tv2.tv_usec);
while (tv.tv_usec < 0) {
tv.tv_sec--;
tv.tv_usec += 1000000;
}
usleep(10);
if (tv.tv_sec < 0) {
done=1;
}
}
}
#endif

/**
* while negative microseconds, take from whole seconds.
* help function for measuring deltas.	* help function for measuring deltas.
*/	*/
static void	static void
fixup_timeval(struct timeval *tv)	fixup_timespec(struct timespec *tv)
{	{
while (tv->tv_usec < 0) {	while (tv->tv_nsec < 0) {
tv->tv_sec--;	tv->tv_sec--;
tv->tv_usec += 1000000;	tv->tv_nsec += 1000000000;
}	}
}	}

/**	/**
* idiot-proof gettimeofday() wrapper	* try to receive a packet for 'packetwait' microseconds
*/	*/
static void	static void
gettv(struct timeval *tv)	ping_recv(pcap_t *pcap, uint32_t packetwait, pcap_handler func)
{	{
if (-1 == gettimeofday(tv,NULL)) {	struct timespec ts;
fprintf(stderr, "arping: "	struct timespec endtime;
"gettimeofday(): %s\n",
strerror(errno));
sigint(0);
}
}


/**
*
*/
static void
ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_handler func)
{
struct timeval tv;
struct timeval endtime;
char done = 0;	char done = 0;
	int fd;
	int old_received;

gettv(&tv);	if (verbose > 3) {
endtime.tv_sec = tv.tv_sec + (packetwait / 1000000);	printf("arping: receiving packets...\n");
endtime.tv_usec = tv.tv_usec + (packetwait % 1000000);	}
fixup_timeval(&endtime);

int fd;	getclock(&ts);
	endtime.tv_sec = ts.tv_sec + (packetwait / 1000000);
	endtime.tv_nsec = ts.tv_nsec + 1000 * (packetwait % 1000000);
	fixup_timespec(&endtime);

fd = pcap_get_selectable_fd(pcap);	fd = pcap_get_selectable_fd(pcap);
	old_received = numrecvd;

for (;!done;) {	for (;!done;) {
int trydispatch = 0;	int trydispatch = 0;

gettv(&tv);	getclock(&ts);
tv.tv_sec = endtime.tv_sec - tv.tv_sec;	ts.tv_sec = endtime.tv_sec - ts.tv_sec;
tv.tv_usec = endtime.tv_usec - tv.tv_usec;	ts.tv_nsec = endtime.tv_nsec - ts.tv_nsec;
fixup_timeval(&tv);	fixup_timespec(&ts);
if (tv.tv_sec < 0) {	if (verbose > 2) {
tv.tv_sec = 0;	printf("listen for replies for %ld.%09ld sec\n",
tv.tv_usec = 1;	(long)ts.tv_sec, (long)ts.tv_nsec);
	}

	/* if time has passed, do one last check and then we're done.
	* this also triggers if not using monotonic clock and time
	* is set forwards */
	if (ts.tv_sec < 0) {
	ts.tv_sec = 0;
	ts.tv_nsec = 1;
done = 1;	done = 1;
}	}

	/* if wait-for-packet time is longer than full period,
	* we're obviously not using a monotonic clock and the system
	* time has been changed.
	* we don't know how far we're into the waiting, so just end
	* it here */
	if ((ts.tv_sec > packetwait / 1000000)
	\|\| ((ts.tv_sec == packetwait / 1000000)
	&& (ts.tv_nsec/1000 > packetwait % 1000000))) {
	ts.tv_sec = 0;
	ts.tv_nsec = 1;
	done = 1;
	}

	/* check for sigint */
if (time_to_die) {	if (time_to_die) {
return;	return;
}	}

/* try to wait for data */	/* try to wait for data */
{	{
struct pollfd p;	fd_set fds;
int r;	int r;
p.fd = fd;	struct timeval tv;
p.events = POLLIN \| POLLPRI;	tv.tv_sec = ts.tv_sec;
	tv.tv_usec = ts.tv_nsec / 1000;

r = poll(&p, 1, tv.tv_sec * 1000 + tv.tv_usec / 1000);	FD_ZERO(&fds);
	FD_SET(fd, &fds);

	r = select(fd + 1, &fds, NULL, NULL, &tv);
switch (r) {	switch (r) {
case 0: /* timeout */	case 0: /* timeout */
	if (display == NORMAL) {
	if (numrecvd == old_received) {
	printf("Timeout\n");
	}
	}
done = 1;	done = 1;
break;	break;
case -1: /* error */	case -1: /* error */
Line 896 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_	Line 926 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_
done = 1;	done = 1;
sigint(0);	sigint(0);
fprintf(stderr,	fprintf(stderr,
"arping: poll() failed: %s\n",	"arping: select() failed: %s\n",
strerror(errno));	strerror(errno));
}	}
break;	break;
Line 908 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_	Line 938 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_

if (trydispatch) {	if (trydispatch) {
int ret;	int ret;
if (1 != (ret = pcap_dispatch(pcap, 1,	if (0 > (ret = pcap_dispatch(pcap, -1,
func,	func,
NULL))) {	NULL))) {
/* rest, so we don't take 100% CPU... mostly	/* rest, so we don't take 100% CPU... mostly
hmm... does usleep() exist everywhere? */	hmm... does usleep() exist everywhere? */
usleep(1);	usleep(1);
Line 918 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_	Line 948 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_
/* weird is normal on bsd :) */	/* weird is normal on bsd :) */
if (verbose > 3) {	if (verbose > 3) {
fprintf(stderr,	fprintf(stderr,
"arping: poll says ok, "	"arping: select says ok, but "
"pcap_dispatch=%d!\n",	"pcap_dispatch=%d!\n",
ret);	ret);
}	}
Line 928 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_	Line 958 ping_recv_unix(pcap_t *pcap,uint32_t packetwait, pcap_
}	}

/**	/**
*
*/
static void
ping_recv(pcap_t *pcap,uint32_t packetwait, pcap_handler func)
{
if(verbose>3) {
printf("arping: receiving packets...\n");
}

#if WIN32
ping_recv_win32(pcap,packetwait,func);
#else
ping_recv_unix(pcap,packetwait,func);
#endif
}

/**
*	*
*/	*/
int main(int argc, char **argv)	int main(int argc, char **argv)
Line 962 int main(int argc, char **argv)	Line 975 int main(int argc, char **argv)
int dont_use_arping_lookupdev=0;	int dont_use_arping_lookupdev=0;
struct bpf_program bp;	struct bpf_program bp;
pcap_t *pcap;	pcap_t *pcap;
static enum { NONE, PINGMAC, PINGIP } mode = NONE;	enum { NONE, PINGMAC, PINGIP } mode = NONE;
unsigned int packetwait = 1000000;	unsigned int packetwait = 1000000;

for (c = 1; c < argc; c++) {	for (c = 1; c < argc; c++) {
Line 973 int main(int argc, char **argv)	Line 986 int main(int argc, char **argv)
}	}
}	}

memset(ethnull, 0, ETH_ALEN);

srcip = 0;	srcip = 0;
dstip = 0xffffffff;	dstip = 0xffffffff;
memset(dstmac, 0xff, ETH_ALEN);	memcpy(dstmac, ethxmas, ETH_ALEN);
memset(ethxmas, 0xff, ETH_ALEN);

while (EOF!=(c=getopt(argc,argv,"0aAbBc:dDeFhi:I:pqrRs:S:t:T:uvw:"))) {	while (EOF!=(c=getopt(argc,argv,"0aAbBc:dDeFhi:I:pqrRs:S:t:T:uUvw:"))) {
switch(c) {	switch(c) {
case '0':	case '0':
srcip = 0;	srcip = 0;
Line 1109 int main(int argc, char **argv)	Line 1119 int main(int argc, char **argv)
case 'u':	case 'u':
alsototal = 1;	alsototal = 1;
break;	break;
	case 'U':
	if (mode == PINGMAC) {
	fprintf(stderr, "arping: -U can only be used "
	"in IP ping mode\n");
	exit(1);
	}
	unsolicited = 1;
	break;
case 'v':	case 'v':
verbose++;	verbose++;
break;	break;
Line 1120 int main(int argc, char **argv)	Line 1138 int main(int argc, char **argv)
}	}
}	}

	if (verbose > 1) {
	#if HAVE_CLOCK_MONOTONIC
	struct timespec ts;
	clock_getres(CLOCK_MONOTONIC, &ts);
	printf("clock_getres() = %ld %ld\n",
	(long)ts.tv_sec, (long)ts.tv_nsec);
	#else
	printf("Using gettimeofday() for time measurements\n");
	#endif
	}

if (display == DOT) {	if (display == DOT) {
setvbuf(stdout, NULL, _IONBF, 0);	setvbuf(stdout, NULL, _IONBF, 0);
}	}
Line 1228 int main(int argc, char **argv)	Line 1257 int main(int argc, char **argv)
* Get some good iface.	* Get some good iface.
*/	*/
if (!ifname) {	if (!ifname) {
if (dont_use_arping_lookupdev) {	if (!dont_use_arping_lookupdev) {
ifname = arping_lookupdev_default(ifname,	ifname = arping_lookupdev(srcip, dstip, ebuf);
srcip,dstip,ebuf);	}
} else {	if (!ifname) {
ifname = arping_lookupdev(ifname,srcip,dstip,ebuf);	ifname = arping_lookupdev_default(srcip, dstip, ebuf);
	if (!dont_use_arping_lookupdev) {
	fprintf(stderr,
	"arping: Unable to automatically find "
	"interface to use. Is it on the local "
	"LAN?\n"
	"arping: Use -i to manually "
	"specify interface. "
	"Guessing interface %s.\n", ifname);
	}
}	}
if (!ifname) {	if (!ifname) {
fprintf(stderr, "arping: arping_lookupdev(): %s\n",	fprintf(stderr, "arping: Gave up looking for interface"
ebuf);	" to use: %s\n", ebuf);
exit(1);	exit(1);
}	}
/* FIXME: check for other probably-not interfaces */	/* FIXME: check for other probably-not interfaces */
Line 1258 int main(int argc, char **argv)	Line 1296 int main(int argc, char **argv)
/*	/*
* pcap init	* pcap init
*/	*/
if (!(pcap = pcap_open_live((char*)ifname, 100, promisc, 10, ebuf))) {	if (!(pcap = do_pcap_open_live(ifname, 100, promisc, 10, ebuf))) {
fprintf(stderr, "arping: pcap_open_live(): %s\n",ebuf);	fprintf(stderr, "arping: pcap_open_live(): %s\n",ebuf);
exit(1);	exit(1);
}	}
Line 1266 int main(int argc, char **argv)	Line 1304 int main(int argc, char **argv)
fprintf(stderr, "arping: pcap_set_nonblock(): %s\n", ebuf);	fprintf(stderr, "arping: pcap_set_nonblock(): %s\n", ebuf);
exit(1);	exit(1);
}	}
if (verbose) {	if (verbose > 1) {
printf("pcap_get_selectable(): %d\n",	printf("pcap_get_selectable_fd(): %d\n",
pcap_get_selectable_fd(pcap));	pcap_get_selectable_fd(pcap));
}	}

#if HAVE_NET_BPF_H	#ifdef BIOCIMMEDIATE
{	{
uint32_t on = 1;	uint32_t on = 1;
if (0 < (ioctl(pcap_fileno(pcap), BIOCIMMEDIATE,	if (0 < (ioctl(pcap_fileno(pcap), BIOCIMMEDIATE,
Line 1314 int main(int argc, char **argv)	Line 1352 int main(int argc, char **argv)
}	}
if (!srcip_given) {	if (!srcip_given) {
if (-1 == (srcip = libnet_get_ipaddr4(libnet))) {	if (-1 == (srcip = libnet_get_ipaddr4(libnet))) {
fprintf(stderr, "arping: libnet_get_ipaddr4(libnet): "	fprintf(stderr,
"%s\n", libnet_geterror(libnet));	"arping: Unable to get the IPv4 address of "
	"interface %s:\narping: %s"
	"arping: "
	"Use -S to specify address manually.\n",
	ifname, libnet_geterror(libnet));
exit(1);	exit(1);
}	}
}	}
#if WIN32	do_signal_init();
/* SetConsoleCtrlHandler(NULL, TRUE); */
SetConsoleCtrlHandler(arping_console_ctrl_handler, TRUE);
#else
signal(SIGINT, sigint);
#endif

if (verbose) {	if (verbose) {
printf("This box: Interface: %s IP: %s MAC address: ",	printf("This box: Interface: %s IP: %s MAC address: ",
Line 1348 int main(int argc, char **argv)	Line 1385 int main(int argc, char **argv)
unsigned int c;	unsigned int c;
unsigned int r;	unsigned int r;
for (c = 0; c < maxcount && !time_to_die; c++) {	for (c = 0; c < maxcount && !time_to_die; c++) {
pingip_send(srcmac, dstmac, srcip, dstip);	pingip_send();
r = numrecvd;	r = numrecvd;
ping_recv(pcap,packetwait,	ping_recv(pcap,packetwait,
(pcap_handler)pingip_recv);	(pcap_handler)pingip_recv);
Line 1361 int main(int argc, char **argv)	Line 1398 int main(int argc, char **argv)
unsigned int c;	unsigned int c;
unsigned int r;	unsigned int r;
for (c = 0; c < maxcount && !time_to_die; c++) {	for (c = 0; c < maxcount && !time_to_die; c++) {
pingmac_send(srcmac, dstmac, srcip, dstip, rand(), c);	pingmac_send(rand(), c);
r = numrecvd;	r = numrecvd;
ping_recv(pcap,packetwait,	ping_recv(pcap,packetwait,
(pcap_handler)pingmac_recv);	(pcap_handler)pingmac_recv);
Line 1385 int main(int argc, char **argv)	Line 1422 int main(int argc, char **argv)
"unanswered (%d extra)\n",	"unanswered (%d extra)\n",
target,numsent,numrecvd,	target,numsent,numrecvd,
(succ < 0.0) ? 0.0 : succ,	(succ < 0.0) ? 0.0 : succ,
(succ < 0.0) ? (numrecvd - numsent): 0);	(succ < 0.0) ? (numrecvd - numsent): 0);
	if (numrecvd) {
	double avg = stats_total_time / numrecvd;
	printf("rtt min/avg/max/std-dev = "
	"%.3f/%.3f/%.3f/%.3f ms",
	1000*stats_min_time,
	1000*avg,
	1000*stats_max_time,
	1000*sqrt(stats_total_sq_time/numrecvd
	-avg*avg));
	}
	printf("\n");
}	}

if (finddup) {	if (finddup) {
Line 1394 int main(int argc, char **argv)	Line 1442 int main(int argc, char **argv)
return !numrecvd;	return !numrecvd;
}	}
}	}
	/* ---- Emacs Variables ----
	* Local Variables:
	* c-basic-offset: 8
	* indent-tabs-mode: nil
	* End:
	*/

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.1
changed lines
	Added in v.1.1.1.2