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-rw-r--r--packages/icmpquery/files/icmpquery.c501
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diff --git a/packages/icmpquery/files/icmpquery.c b/packages/icmpquery/files/icmpquery.c
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-/*
- * icmpquery.c - send and receive ICMP queries for address mask
- * and current time.
- *
- * Version 1.0.3
- *
- * Copyright 1998, 1999, 2000 David G. Andersen <angio@pobox.com>
- * <danderse@cs.utah.edu>
- * http://www.angio.net/
- *
- * All rights reserved.
- * This information is subject to change without notice and does not
- * represent a commitment on the part of David G. Andersen.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 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. The name of David G. Andersen may not
- * be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL DAVID G. ANDERSEN BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *
- *
- * Verified to work on:
- * FreeBSD (2.x, 3.x)
- * Linux 2.0.x, 2.2.0-pre1
- * NetBSD 1.3
- *
- * Should work on Solaris and other platforms with BSD-ish stacks.
- *
- * If you compile it somewhere else, or it doesn't work somewhere,
- * please let me know.
- *
- * Compilation: gcc icmpquery.c -o icmpquery
- *
- * One usage note: In order to receive accurate time information,
- * the time on your computer must be correct; the
- * ICMP timestamp reply is a relative time figure.
- */
-
-
-/* Some portions of this code are taken from FreeBSD's ping source.
- * Those portions are subject to the BSD copyright, which is appended
- * at the end of this file. Namely, in_cksum.
- */
-
-#include <time.h>
-#include <sys/time.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/ip_icmp.h>
-#include <errno.h>
-#include <string.h>
-#include <signal.h>
-#include <arpa/inet.h>
-
-u_short in_cksum(u_short *addr, int len);
-
-/*
- * We perform lookups on the hosts, and then store them in a chain
- * here.
- */
-
-struct hostdesc {
- char *hostname;
- struct in_addr hostaddr;
- struct hostdesc *next;
-};
-
-struct hostdesc *hostnames;
-struct hostdesc *hosttail;
-
-void resolv_from(char *hostfrom, struct in_addr *fromaddr)
-{
- struct hostent *hp;
- if (hostfrom == NULL) {
- fromaddr->s_addr = 0;
- return;
- }
-
- if ((hp = gethostbyname(hostfrom)) == NULL) {
- if ((fromaddr->s_addr = inet_addr(hostfrom)) == -1) {
- fprintf(stderr, "could not resolve from address\n");
- exit(0);
- }
- } else {
- bcopy(hp->h_addr_list[0], &fromaddr->s_addr, hp->h_length);
- }
-}
-
-/*
- * Set up the list of hosts. Return the count.
- */
-
-int makehosts(char **hostlist)
-{
- int i;
- struct hostent *hp;
- struct in_addr tmpaddr;
- int hostcount = 0;
-
- for (i = 0; hostlist[i]; i++) {
-#ifdef DEBUG
- printf("Resolving %s\n", hostlist[i]);
-#endif
- if ((hp = gethostbyname(hostlist[i])) == NULL) {
- if ((tmpaddr.s_addr = inet_addr(hostlist[i]))) {
- /* Could not resolve it. Skip it. */
- fprintf(stderr, "%s: unknown host\n",
- hostlist[i]);
- continue;
- }
- } else {
- bcopy(hp->h_addr_list[0],
- &tmpaddr.s_addr, hp->h_length);
- }
-
- /* The host has been resolved. Put it in the chain */
- /* We want to stick it on the end. */
- if (hostnames == NULL) {
- hostnames = (struct hostdesc *)
- malloc(sizeof(*hostnames));
- if (hostnames == NULL) {
- perror("hostnames malloc failed");
- exit(-1);
- }
- hosttail = hostnames;
- } else {
- hosttail->next = (struct hostdesc *)
- malloc(sizeof(*hostnames));
- if (hosttail->next == NULL) {
- perror("hosttail->next malloc failed");
- exit(-1);
- }
- hosttail = hosttail->next;
- }
- hosttail->hostname = strdup(hostlist[i]);
- if (hosttail->hostname == NULL) {
- perror("strdup failed");
- exit(-1);
- }
- hosttail->hostaddr = tmpaddr;
- hosttail->next = NULL;
- hostcount++;
- }
- return hostcount;
-}
-
-void usage(char *prog)
-{
- fprintf(stderr,
- "%s <-query> [-B] [-f fromhost] [-d delay] [-T time] targets\n"
- " where <query> is one of:\n"
- " -t : icmp timestamp request (default)\n"
- " -m : icmp address mask request\n"
- " The delay is in microseconds to sleep between packets.\n"
- " targets is a list of hostnames or addresses\n"
- " -T specifies the number of seconds to wait for a host to\n"
- " respond. The default is 5.\n"
- " -B specifies \'broadcast\' mode. icmpquery will wait\n"
- " for timeout seconds and print all responses.\n"
- " If you're on a modem, you may wish to use a larger -d and -T\n"
- ,prog);
-}
-
-/*
- * Set up a packet. Returns the length of the ICMP portion.
- */
-
-int initpacket(char *buf, int querytype, struct in_addr fromaddr)
-{
- struct ip *ip = (struct ip *)buf;
- struct icmp *icmp = (struct icmp *)(ip + 1);
-
- /* things we customize */
- int icmplen = 0;
-
- ip->ip_src = fromaddr; /* if 0, have kernel fill in */
- ip->ip_v = 4; /* Always use ipv4 for now */
- ip->ip_hl = sizeof *ip >> 2;
- ip->ip_tos = 0;
- ip->ip_id = htons(4321);
- ip->ip_ttl = 255;
- ip->ip_p = 1;
- ip->ip_sum = 0; /* kernel fills in */
-
- icmp->icmp_seq = 1;
- icmp->icmp_cksum = 0;
- icmp->icmp_type = querytype;
- icmp->icmp_code = 0;
-
- switch(querytype) {
- case ICMP_TSTAMP:
- gettimeofday( (struct timeval *)(icmp+8), NULL);
- bzero( icmp+12, 8);
- icmplen = 20;
- break;
- case ICMP_MASKREQ:
- *((char *)(icmp+8)) = 255;
- icmplen = 12;
- break;
- default:
- fprintf(stderr, "eek: unknown query type\n");
- exit(0);
- }
- ip->ip_len = sizeof(struct ip) + icmplen;
- return icmplen;
-}
-
-void sendpings(int s, int querytype, struct hostdesc *head, int delay,
- struct in_addr fromaddr)
-
-{
- char buf[1500];
- struct ip *ip = (struct ip *)buf;
- struct icmp *icmp = (struct icmp *)(ip + 1);
- struct sockaddr_in dst;
- int icmplen;
-
- bzero(buf, 1500);
- icmplen = initpacket(buf, querytype, fromaddr);
- dst.sin_family = AF_INET;
-
- while (head != NULL) {
-#ifdef DEBUG
- printf("pinging %s\n", head->hostname);
-#endif
- ip->ip_dst.s_addr = head->hostaddr.s_addr;
- dst.sin_addr = head->hostaddr;
- icmp->icmp_cksum = 0;
- icmp->icmp_cksum = in_cksum((u_short *)icmp, icmplen);
- if (sendto(s, buf, ip->ip_len, 0,
- (struct sockaddr *)&dst,
- sizeof(dst)) < 0) {
- perror("sendto");
- }
- if (delay)
- usleep(delay);
- /* Don't flood the pipeline..kind of arbitrary */
- head = head->next;
- }
-}
-
-void myexit(int whatsig)
-{
- exit(0);
-}
-
-/*
- * Listen for 'hostcount' pings, print out the information, and
- * then exit.
- */
-
-void recvpings(int s, int querytype, struct hostdesc *head, int hostcount,
- int broadcast)
-{
- char buf[1500];
- struct ip *ip = (struct ip *)buf;
- struct icmp *icmp;
- int err = 0;
- long int fromlen = 0;
- int hlen;
- struct timeval tv;
- struct tm *tmtime;
- int recvd = 0;
- char *hostto;
- char hostbuf[128], timebuf[128];
- struct hostdesc *foundhost;
- unsigned long int icmptime, icmpmask;
-
- gettimeofday(&tv, NULL);
-
- while (recvd < hostcount) {
- if ((err = recvfrom(s, buf, sizeof buf, 0, NULL,
- (int *)&fromlen)) < 0)
- {
- perror("icmpquery: recvfrom");
- }
-
- hlen = ip->ip_hl << 2;
- icmp = (struct icmp *)(buf + hlen);
-
- /* Find the host */
- hostto = 0;
- for (foundhost = head; foundhost != NULL;
- foundhost = foundhost->next) {
- if (foundhost->hostaddr.s_addr == ip->ip_src.s_addr) {
- hostto = foundhost->hostname;
- break;
- }
- }
-
- if (!hostto) {
- sprintf(hostbuf, "unknown (%s)",
- inet_ntoa(ip->ip_src));
- hostto = hostbuf;
- }
-
- /* For time */
- switch(icmp->icmp_type) {
- case ICMP_TSTAMPREPLY:
- icmptime = ntohl(icmp->icmp_ttime);
- /* ms since midnight. yuch. */
- tv.tv_sec -= tv.tv_sec%(24*60*60);
- tv.tv_sec += (icmptime/1000);
- tv.tv_usec = (icmptime%1000);
- tmtime = localtime(&tv.tv_sec);
- strftime(timebuf, 128, "%H:%M:%S", tmtime);
- printf("%-40.40s: %s\n", hostto, timebuf);
- break;
-
- case ICMP_MASKREPLY:
- icmpmask = ntohl(icmp->icmp_dun.id_mask);
- printf("%-40.40s: 0x%lX\n", hostto, icmpmask);
- break;
-
- default:
- printf("Unknown ICMP message received (type %d)\n",
- icmp->icmp_type);
- break;
- }
- if (!broadcast)
- recvd++;
- }
-}
-
-int
-main(int argc, char **argv)
-{
- int s;
-
- char *progname;
- extern char *optarg; /* getopt variable declarations */
- char *hostfrom = NULL;
- extern int optind;
- extern int optopt;
- extern int opterr;
- char ch; /* Holds the getopt result */
- int on = 1;
- int hostcount;
- int delay = 0;
- int querytype = ICMP_TSTAMP;
- struct in_addr fromaddr;
- int timeout = 5; /* Default to 5 seconds */
- int broadcast = 0; /* Should we wait for all responses? */
-
- fromaddr.s_addr = 0;
-
- progname = argv[0];
-
- while ((ch = getopt(argc, argv, "Btmf:d:T:")) != EOF)
- switch(ch)
- {
- case 'B':
- broadcast = 1;
- break;
- case 'd':
- delay = (int) strtol(optarg, NULL, 10);
- break;
- case 't': /* timestamp request */
- querytype = ICMP_TSTAMP;
- break;
- case 'm': /* address mask request */
- querytype = ICMP_MASKREQ;
- break;
- case 'f':
- hostfrom = optarg;
- resolv_from(hostfrom, &fromaddr);
- break;
- case 'T':
- timeout = (int) strtol(optarg, NULL, 10);
- break;
- default:
- usage(progname);
- exit(-1);
- }
- argc -= optind;
- argv += optind;
-
- if (!argv[0] || !strlen(argv[0]))
- {
- usage(progname);
- exit(-1);
- }
-
- hostcount = makehosts(argv);
-
- if ((s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP)) < 0) {
- perror("socket");
- exit(1);
- }
- if (setsockopt(s, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on)) < 0) {
- perror("IP_HDRINCL");
- exit(1);
- }
-
- signal(SIGALRM, myexit);
- alarm(timeout);
- sendpings(s, querytype, hostnames, delay, fromaddr);
- recvpings(s, querytype, hostnames, hostcount, broadcast);
- exit(0);
-}
-
-/*
- * in_cksum --
- * Checksum routine for Internet Protocol family headers (C Version)
- * From FreeBSD's ping.c
- */
-
-u_short
-in_cksum(addr, len)
- u_short *addr;
- int len;
-{
- register int nleft = len;
- register u_short *w = addr;
- register int sum = 0;
- u_short answer = 0;
-
- /*
- * Our algorithm is simple, using a 32 bit accumulator (sum), we add
- * sequential 16 bit words to it, and at the end, fold back all the
- * carry bits from the top 16 bits into the lower 16 bits.
- */
- while (nleft > 1) {
- sum += *w++;
- nleft -= 2;
- }
-
- /* mop up an odd byte, if necessary */
- if (nleft == 1) {
- *(u_char *)(&answer) = *(u_char *)w ;
- sum += answer;
- }
-
- /* add back carry outs from top 16 bits to low 16 bits */
- sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
- sum += (sum >> 16); /* add carry */
- answer = ~sum; /* truncate to 16 bits */
- return(answer);
-}
-
-
-/*
- * Copyright (c) 1989, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Mike Muuss.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 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.
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
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