/* vi: set sw=4 ts=4: */
/*
- * $Id: ping6.c,v 1.1 2002/07/03 11:46:34 andersen Exp $
+ * $Id: ping6.c,v 1.6 2004/03/15 08:28:48 andersen Exp $
* Mini ping implementation for busybox
*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
* This version of ping is adapted from the ping in netkit-base 0.10,
* which is:
*
* This code is derived from software contributed to Berkeley by
* Mike Muuss.
- *
+ *
* Original copyright notice is retained at the end of this file.
*
* This version is an adaptation of ping.c from busybox.
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/file.h>
-#include <sys/time.h>
#include <sys/times.h>
-#include <sys/signal.h>
+#include <signal.h>
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <stddef.h> /* offsetof */
#include "busybox.h"
-static const int DEFDATALEN = 56;
-static const int MAXIPLEN = 60;
-static const int MAXICMPLEN = 76;
-static const int MAXPACKET = 65468;
-#define MAX_DUP_CHK (8 * 128)
-static const int MAXWAIT = 10;
-static const int PINGINTERVAL = 1; /* second */
-
-#define O_QUIET (1 << 0)
-#define O_VERBOSE (1 << 1)
-
-#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
-#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
-#define SET(bit) (A(bit) |= B(bit))
-#define CLR(bit) (A(bit) &= (~B(bit)))
-#define TST(bit) (A(bit) & B(bit))
+enum {
+ DEFDATALEN = 56,
+ MAXIPLEN = 60,
+ MAXICMPLEN = 76,
+ MAXPACKET = 65468,
+ MAX_DUP_CHK = (8 * 128),
+ MAXWAIT = 10,
+ PINGINTERVAL = 1 /* second */
+};
static void ping(const char *host);
-/* simple version */
#ifndef CONFIG_FEATURE_FANCY_PING6
+/* simple version */
+
+static struct hostent *h;
+
+static void noresp(int ign)
+{
+ printf("No response from %s\n", h->h_name);
+ exit(EXIT_FAILURE);
+}
+
static void ping(const char *host)
{
- struct hostent *h;
struct sockaddr_in6 pingaddr;
struct icmp6_hdr *pkt;
int pingsock, c;
int sockopt;
char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
- void noresp(int ign)
- {
- printf("No response from %s\n", h->h_name);
- exit(0);
- }
-
pingsock = create_icmp6_socket();
memset(&pingaddr, 0, sizeof(struct sockaddr_in));
setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, (char *) &sockopt,
sizeof(sockopt));
- c = sendto(pingsock, packet, sizeof(packet), 0,
+ c = sendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr), 0,
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in6));
- if (c < 0 || c != sizeof(packet))
- perror_msg_and_die("sendto");
+ if (c < 0 || c != sizeof(packet)) {
+ if (ENABLE_FEATURE_CLEAN_UP) close(pingsock);
+ bb_perror_msg_and_die("sendto");
+ }
signal(SIGALRM, noresp);
alarm(5); /* give the host 5000ms to respond */
(struct sockaddr *) &from, &fromlen)) < 0) {
if (errno == EINTR)
continue;
- perror_msg("recvfrom");
+ bb_perror_msg("recvfrom");
continue;
}
if (c >= 8) { /* icmp6_hdr */
break;
}
}
+ if (ENABLE_FEATURE_CLEAN_UP) close(pingsock);
printf("%s is alive!\n", h->h_name);
return;
}
-extern int ping6_main(int argc, char **argv)
+int ping6_main(int argc, char **argv)
{
argc--;
argv++;
if (argc < 1)
- show_usage();
+ bb_show_usage();
ping(*argv);
return EXIT_SUCCESS;
}
#else /* ! CONFIG_FEATURE_FANCY_PING6 */
+
/* full(er) version */
+
+#define OPT_STRING "qvc:s:I:"
+enum {
+ OPT_QUIET = 1 << 0,
+ OPT_VERBOSE = 1 << 1,
+};
+
static struct sockaddr_in6 pingaddr;
static int pingsock = -1;
-static int datalen; /* intentionally uninitialized to work around gcc bug */
-static char* ifname;
+static unsigned datalen; /* intentionally uninitialized to work around gcc bug */
+static int if_index;
-static long ntransmitted, nreceived, nrepeats, pingcount;
-static int myid, options;
+static unsigned long ntransmitted, nreceived, nrepeats, pingcount;
+static int myid;
static unsigned long tmin = ULONG_MAX, tmax, tsum;
static char rcvd_tbl[MAX_DUP_CHK / 8];
-#if CONFIG_FEATURE_FANCY_PING
-extern
-#endif
- struct hostent *hostent;
+static struct hostent *hostent;
static void sendping(int);
static void pingstats(int);
static void unpack(char *, int, struct sockaddr_in6 *, int);
+#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
+#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
+#define SET(bit) (A(bit) |= B(bit))
+#define CLR(bit) (A(bit) &= (~B(bit)))
+#define TST(bit) (A(bit) & B(bit))
+
/**************************************************************************/
static void pingstats(int junk)
signal(SIGINT, SIG_IGN);
printf("\n--- %s ping statistics ---\n", hostent->h_name);
- printf("%ld packets transmitted, ", ntransmitted);
- printf("%ld packets received, ", nreceived);
+ printf("%lu packets transmitted, ", ntransmitted);
+ printf("%lu packets received, ", nreceived);
if (nrepeats)
- printf("%ld duplicates, ", nrepeats);
+ printf("%lu duplicates, ", nrepeats);
if (ntransmitted)
- printf("%ld%% packet loss\n",
+ printf("%lu%% packet loss\n",
(ntransmitted - nreceived) * 100 / ntransmitted);
if (nreceived)
printf("round-trip min/avg/max = %lu.%lu/%lu.%lu/%lu.%lu ms\n",
{
struct icmp6_hdr *pkt;
int i;
- char packet[datalen + 8];
+ char packet[datalen + sizeof (struct icmp6_hdr)];
pkt = (struct icmp6_hdr *) packet;
pkt->icmp6_type = ICMP6_ECHO_REQUEST;
pkt->icmp6_code = 0;
pkt->icmp6_cksum = 0;
- pkt->icmp6_seq = ntransmitted++;
+ pkt->icmp6_seq = htons(ntransmitted++);
pkt->icmp6_id = myid;
CLR(pkt->icmp6_seq % MAX_DUP_CHK);
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in6));
if (i < 0)
- perror_msg_and_die("sendto");
+ bb_perror_msg_and_die("sendto");
else if ((size_t)i != sizeof(packet))
- error_msg_and_die("ping wrote %d chars; %d expected", i,
+ bb_error_msg_and_die("ping wrote %d chars; %d expected", i,
(int)sizeof(packet));
signal(SIGALRM, sendping);
}
}
-static char *icmp6_type_name (int id)
+/* RFC3542 changed some definitions from RFC2292 for no good reason, whee !
+ * the newer 3542 uses a MLD_ prefix where as 2292 uses ICMP6_ prefix */
+#ifndef MLD_LISTENER_QUERY
+# define MLD_LISTENER_QUERY ICMP6_MEMBERSHIP_QUERY
+#endif
+#ifndef MLD_LISTENER_REPORT
+# define MLD_LISTENER_REPORT ICMP6_MEMBERSHIP_REPORT
+#endif
+#ifndef MLD_LISTENER_REDUCTION
+# define MLD_LISTENER_REDUCTION ICMP6_MEMBERSHIP_REDUCTION
+#endif
+static char *icmp6_type_name(int id)
{
switch (id) {
case ICMP6_DST_UNREACH: return "Destination Unreachable";
case ICMP6_PARAM_PROB: return "Parameter Problem";
case ICMP6_ECHO_REPLY: return "Echo Reply";
case ICMP6_ECHO_REQUEST: return "Echo Request";
- case ICMP6_MEMBERSHIP_QUERY: return "Membership Query";
- case ICMP6_MEMBERSHIP_REPORT: return "Membership Report";
- case ICMP6_MEMBERSHIP_REDUCTION: return "Membership Reduction";
- default: return "unknown ICMP type";
+ case MLD_LISTENER_QUERY: return "Listener Query";
+ case MLD_LISTENER_REPORT: return "Listener Report";
+ case MLD_LISTENER_REDUCTION: return "Listener Reduction";
+ default: return "unknown ICMP type";
}
}
return;
icmppkt = (struct icmp6_hdr *) packet;
-
if (icmppkt->icmp6_id != myid)
- return; /* not our ping */
+ return; /* not our ping */
if (icmppkt->icmp6_type == ICMP6_ECHO_REPLY) {
- ++nreceived;
+ ++nreceived;
tp = (struct timeval *) &icmppkt->icmp6_data8[4];
if ((tv.tv_usec -= tp->tv_usec) < 0) {
dupflag = 0;
}
- if (options & O_QUIET)
+ if (option_mask32 & OPT_QUIET)
return;
printf("%d bytes from %s: icmp6_seq=%u", sz,
- inet_ntop(AF_INET6, (struct in_addr6 *) &pingaddr.sin6_addr,
+ inet_ntop(AF_INET6, &pingaddr.sin6_addr,
buf, sizeof(buf)),
icmppkt->icmp6_seq);
- printf(" ttl=%d time=%lu.%lu ms", hoplimit,
+ printf(" ttl=%d time=%lu.%lu ms", hoplimit,
triptime / 10, triptime % 10);
if (dupflag)
printf(" (DUP!)");
- printf("\n");
- } else
+ puts("");
+ } else
if (icmppkt->icmp6_type != ICMP6_ECHO_REQUEST)
- error_msg("Warning: Got ICMP %d (%s)",
- icmppkt->icmp6_type, icmp6_type_name (icmppkt->icmp6_type));
+ bb_error_msg("warning: got ICMP %d (%s)",
+ icmppkt->icmp6_type, icmp6_type_name(icmppkt->icmp6_type));
}
static void ping(const char *host)
pingaddr.sin6_family = AF_INET6;
hostent = xgethostbyname2(host, AF_INET6);
if (hostent->h_addrtype != AF_INET6)
- error_msg_and_die("unknown address type; only AF_INET6 is currently supported.");
+ bb_error_msg_and_die("unknown address type; only AF_INET6 is currently supported");
memcpy(&pingaddr.sin6_addr, hostent->h_addr, sizeof(pingaddr.sin6_addr));
#ifdef ICMP6_FILTER
{
struct icmp6_filter filt;
- if (!(options & O_VERBOSE)) {
+ if (!(option_mask32 & OPT_VERBOSE)) {
ICMP6_FILTER_SETBLOCKALL(&filt);
-#if 0
- if ((options & F_FQDN) || (options & F_FQDNOLD) ||
- (options & F_NODEADDR) || (options & F_SUPTYPES))
- ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
- else
-#endif
- ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
+ ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
} else {
ICMP6_FILTER_SETPASSALL(&filt);
}
if (setsockopt(pingsock, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
sizeof(filt)) < 0)
- error_msg_and_die("setsockopt(ICMP6_FILTER)");
+ bb_error_msg_and_die("setsockopt(ICMP6_FILTER)");
}
#endif /*ICMP6_FILTER*/
/* enable broadcast pings */
- sockopt = 1;
- setsockopt(pingsock, SOL_SOCKET, SO_BROADCAST, (char *) &sockopt,
- sizeof(sockopt));
+ setsockopt_broadcast(pingsock);
/* set recv buf for broadcast pings */
sockopt = 48 * 1024;
setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, (char *) &sockopt,
sizeof(sockopt));
- if (ifname) {
- if ((pingaddr.sin6_scope_id = if_nametoindex(ifname)) == 0)
- error_msg_and_die("%s: invalid interface name", ifname);
- }
+ if (if_index)
+ pingaddr.sin6_scope_id = if_index;
printf("PING %s (%s): %d data bytes\n",
- hostent->h_name,
- inet_ntop(AF_INET6, (struct in_addr6 *) &pingaddr.sin6_addr,
- buf, sizeof(buf)),
+ hostent->h_name,
+ inet_ntop(AF_INET6, &pingaddr.sin6_addr,
+ buf, sizeof(buf)),
datalen);
signal(SIGINT, pingstats);
sendping(0);
/* listen for replies */
- msg.msg_name=&from;
- msg.msg_namelen=sizeof(from);
- msg.msg_iov=&iov;
- msg.msg_iovlen=1;
- msg.msg_control=control_buf;
- iov.iov_base=packet;
- iov.iov_len=sizeof(packet);
+ msg.msg_name = &from;
+ msg.msg_namelen = sizeof(from);
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = control_buf;
+ iov.iov_base = packet;
+ iov.iov_len = sizeof(packet);
while (1) {
int c;
struct cmsghdr *cmsgptr = NULL;
- int hoplimit=-1;
- msg.msg_controllen=sizeof(control_buf);
+ int hoplimit = -1;
+ msg.msg_controllen = sizeof(control_buf);
if ((c = recvmsg(pingsock, &msg, 0)) < 0) {
if (errno == EINTR)
continue;
- perror_msg("recvfrom");
+ bb_perror_msg("recvfrom");
continue;
}
for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL;
cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) {
if (cmsgptr->cmsg_level == SOL_IPV6 &&
cmsgptr->cmsg_type == IPV6_HOPLIMIT ) {
- hoplimit=*(int*)CMSG_DATA(cmsgptr);
+ hoplimit = *(int*)CMSG_DATA(cmsgptr);
}
}
unpack(packet, c, &from, hoplimit);
pingstats(0);
}
-extern int ping6_main(int argc, char **argv)
+int ping6_main(int argc, char **argv)
{
- char *thisarg;
+ char *opt_c, *opt_s, *opt_I;
datalen = DEFDATALEN; /* initialized here rather than in global scope to work around gcc bug */
- argc--;
- argv++;
- options = 0;
- /* Parse any options */
- while (argc >= 1 && **argv == '-') {
- thisarg = *argv;
- thisarg++;
- switch (*thisarg) {
- case 'v':
- options &= ~O_QUIET;
- options |= O_VERBOSE;
- break;
- case 'q':
- options &= ~O_VERBOSE;
- options |= O_QUIET;
- break;
- case 'c':
- if (--argc <= 0)
- show_usage();
- argv++;
- pingcount = atoi(*argv);
- break;
- case 's':
- if (--argc <= 0)
- show_usage();
- argv++;
- datalen = atoi(*argv);
- break;
- case 'I':
- if (--argc <= 0)
- show_usage();
- argv++;
- ifname = *argv;
- break;
- default:
- show_usage();
- }
- argc--;
- argv++;
+ /* exactly one argument needed, -v and -q don't mix */
+ opt_complementary = "=1:q--v:v--q";
+ getopt32(argc, argv, OPT_STRING, &opt_c, &opt_s, &opt_I);
+ if (option_mask32 & 4) pingcount = xatoul(opt_c); // -c
+ if (option_mask32 & 8) datalen = xatou16(opt_s); // -s
+ if (option_mask32 & 0x10) { // -I
+ if_index = if_nametoindex(opt_I);
+ if (!if_index)
+ bb_error_msg_and_die(
+ "%s: invalid interface name", opt_I);
}
- if (argc < 1)
- show_usage();
- myid = getpid() & 0xFFFF;
- ping(*argv);
+ myid = (int16_t)getpid();
+ ping(argv[optind]);
return EXIT_SUCCESS;
}
#endif /* ! CONFIG_FEATURE_FANCY_PING6 */
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
- * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
- * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
+ * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
+ * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
projects / oweals / busybox.git / blobdiff