/* vi: set sw=4 ts=4: */
/*
- * $Id: ping.c,v 1.20 2000/07/12 17:02:35 kraai Exp $
+ * $Id: ping.c,v 1.40 2001/04/09 23:52:18 andersen Exp $
* Mini ping implementation for busybox
*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
* Original copyright notice is retained at the end of this file.
*/
-#include "internal.h"
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include "busybox.h"
/* It turns out that libc5 doesn't have proper icmp support
* built into it header files, so we have to supplement it */
-#if ! defined __GLIBC__ && ! defined __UCLIBC__
-typedef unsigned int socklen_t;
-
-#define ICMP_MINLEN 8 /* abs minimum */
+#if __GNU_LIBRARY__ < 5
+static const int ICMP_MINLEN = 8; /* abs minimum */
struct icmp_ra_addr
{
};
#endif
-#define DEFDATALEN 56
-#define MAXIPLEN 60
-#define MAXICMPLEN 76
-#define MAXPACKET 65468
+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)
-#define MAXWAIT 10
-#define PINGINTERVAL 1 /* second */
+static const int MAXWAIT = 10;
+static const int PINGINTERVAL = 1; /* second */
#define O_QUIET (1 << 0)
/* simple version */
#ifdef BB_FEATURE_SIMPLE_PING
-static const char *ping_usage = "ping host\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nSend ICMP ECHO_REQUEST packets to network hosts\n"
-#endif
- ;
-
static char *hostname = NULL;
static void noresp(int ign)
int pingsock, c;
char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
- if ((pingsock = socket(AF_INET, SOCK_RAW, 1)) < 0) { /* 1 == ICMP */
- perror("ping: creating a raw socket");
- exit(1);
- }
+ if ((pingsock = socket(AF_INET, SOCK_RAW, 1)) < 0) /* 1 == ICMP */
+ perror_msg_and_die("creating a raw socket");
/* drop root privs if running setuid */
setuid(getuid());
pingaddr.sin_family = AF_INET;
if (!(h = gethostbyname(host))) {
- fprintf(stderr, "ping: unknown host %s\n", host);
+ error_msg("unknown host %s", host);
exit(1);
}
memcpy(&pingaddr.sin_addr, h->h_addr, sizeof(pingaddr.sin_addr));
c = sendto(pingsock, packet, sizeof(packet), 0,
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in));
- if (c < 0 || c != sizeof(packet)) {
- if (c < 0)
- perror("ping: sendto");
- fprintf(stderr, "ping: write incomplete\n");
- exit(1);
- }
+ if (c < 0 || c != sizeof(packet))
+ 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("ping: recvfrom");
+ perror_msg("recvfrom");
continue;
}
if (c >= 76) { /* ip + icmp */
argc--;
argv++;
if (argc < 1)
- usage(ping_usage);
+ show_usage();
ping(*argv);
- exit(TRUE);
+ return EXIT_SUCCESS;
}
#else /* ! BB_FEATURE_SIMPLE_PING */
/* full(er) version */
-static const char *ping_usage = "ping [OPTION]... host\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nSend ICMP ECHO_REQUEST packets to network hosts.\n\n"
- "Options:\n"
- "\t-c COUNT\tSend only COUNT pings.\n"
- "\t-s SIZE\t\tSend SIZE data bytes in packets (default=56).\n"
- "\t-q\t\tQuiet mode, only displays output at start\n"
- "\t\t\tand when finished.\n"
-#endif
- ;
-
static char *hostname = NULL;
static struct sockaddr_in pingaddr;
static int pingsock = -1;
-static int datalen = DEFDATALEN;
+static int datalen; /* intentionally uninitialized to work around gcc bug */
static long ntransmitted = 0, nreceived = 0, nrepeats = 0, pingcount = 0;
static int myid = 0, options = 0;
/**************************************************************************/
-static void pingstats(int ign)
+static void pingstats(int junk)
{
+ int status;
+
signal(SIGINT, SIG_IGN);
printf("\n--- %s ping statistics ---\n", hostname);
tmin / 10, tmin % 10,
(tsum / (nreceived + nrepeats)) / 10,
(tsum / (nreceived + nrepeats)) % 10, tmax / 10, tmax % 10);
- exit(0);
+ if (nreceived != 0)
+ status = EXIT_SUCCESS;
+ else
+ status = EXIT_FAILURE;
+ exit(status);
}
-static void sendping(int ign)
+static void sendping(int junk)
{
struct icmp *pkt;
int i;
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in));
if (i < 0)
- fatalError("sendto: %s\n", strerror(errno));
- else if (i != sizeof(packet))
- fatalError("ping wrote %d chars; %d expected\n", i,
+ perror_msg_and_die("sendto");
+ else if ((size_t)i != sizeof(packet))
+ error_msg_and_die("ping wrote %d chars; %d expected", i,
(int)sizeof(packet));
signal(SIGALRM, sendping);
printf("\n");
} else
if (icmppkt->icmp_type != ICMP_ECHO)
- fprintf(stderr,
- "Warning: Got ICMP %d (%s)\n",
+ error_msg("Warning: Got ICMP %d (%s)",
icmppkt->icmp_type, icmp_type_name (icmppkt->icmp_type));
}
* proto->p_proto to have the correct value for "icmp" */
if ((pingsock = socket(AF_INET, SOCK_RAW,
(proto ? proto->p_proto : 1))) < 0) { /* 1 == ICMP */
- if (errno == EPERM) {
- fprintf(stderr, "ping: permission denied. (are you root?)\n");
- } else {
- perror("ping: creating a raw socket");
- }
- exit(1);
+ if (errno == EPERM)
+ error_msg_and_die("permission denied. (are you root?)");
+ else
+ perror_msg_and_die("creating a raw socket");
}
/* drop root privs if running setuid */
pingaddr.sin_family = AF_INET;
if (!(h = gethostbyname(host))) {
- fprintf(stderr, "ping: unknown host %s\n", host);
+ error_msg("unknown host %s", host);
exit(1);
}
if (h->h_addrtype != AF_INET) {
- fprintf(stderr,
- "ping: unknown address type; only AF_INET is currently supported.\n");
+ error_msg("unknown address type; only AF_INET is currently supported.");
exit(1);
}
(struct sockaddr *) &from, &fromlen)) < 0) {
if (errno == EINTR)
continue;
- perror("ping: recvfrom");
+ perror_msg("recvfrom");
continue;
}
unpack(packet, c, &from);
{
char *thisarg;
+ datalen = DEFDATALEN; /* initialized here rather than in global scope to work around gcc bug */
+
argc--;
argv++;
options = 0;
break;
case 'c':
if (--argc <= 0)
- usage(ping_usage);
+ show_usage();
argv++;
pingcount = atoi(*argv);
break;
case 's':
if (--argc <= 0)
- usage(ping_usage);
+ show_usage();
argv++;
datalen = atoi(*argv);
break;
default:
- usage(ping_usage);
+ show_usage();
}
argc--;
argv++;
}
if (argc < 1)
- usage(ping_usage);
+ show_usage();
myid = getpid() & 0xFFFF;
ping(*argv);
- return(TRUE);
+ return EXIT_SUCCESS;
}
#endif /* ! BB_FEATURE_SIMPLE_PING */
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
+ *
+ * 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
* without specific prior written permission.
projects / oweals / busybox.git / blobdiff