A traceroute applet from vodz. This could probably be slimmed down,

but will do for now...

8 files changed, 1259 insertions, 0 deletions

diff --git a/Config.h b/Config.h
index 051181160..00294f72e 100644
--- a/Config.h
+++ b/Config.h
@@ -114,6 +114,7 @@
 //#define BB_TFTP
 #define BB_TOUCH
 //#define BB_TR
+//#define BB_TRACEROUTE
 #define BB_TRUE_FALSE
 #define BB_TTY
 //#define BB_UNIX2DOS
diff --git a/applets.h b/applets.h
index e6ee3c95e..12a28d5be 100644
--- a/applets.h
+++ b/applets.h
@@ -386,6 +386,9 @@
 #ifdef BB_TR
         APPLET(tr, tr_main, _BB_DIR_USR_BIN)
 #endif
+#ifdef BB_TRACEROUTE
+        APPLET(traceroute, traceroute_main, _BB_DIR_USR_BIN)
+#endif
 #ifdef BB_TRUE_FALSE
         APPLET(true, true_main, _BB_DIR_BIN)
 #endif
diff --git a/applets/usage.h b/applets/usage.h
index a19f0fe22..70dafd81c 100644
--- a/applets/usage.h
+++ b/applets/usage.h
@@ -1593,6 +1593,28 @@
         "$ echo "gdkkn vnqkc" | tr [a-y] [b-z]\n" \
         "hello world\n" 
 
+#define traceroute_trivial_usage \
+        "[-dnrv] [-m max_ttl] [-p port#] [-q nqueries]\n\
+        [-s src_addr] [-t tos] [-w wait] host [data size]"
+#define traceroute_full_usage \
+        "trace the route ip packets follow going to \"host\"\n" \
+        "Options:\n" \
+        "\t-d\tset SO_DEBUG options to socket\n" \
+        "\t-n\tPrint hop addresses numerically rather than symbolically\n" \
+        "\t-r\tBypass the normal routing tables and send directly to a host\n" \
+        "\t-v\tVerbose output\n" \
+        "\t-m max_ttl\tSet the max time-to-live (max number of hops)\n" \
+        "\t-p port#\tSet the base UDP port number used in probes\n" \
+        "\t\t(default is 33434)\n" \
+        "\t-q nqueries\tSet the number of probes per ``ttl'' to nqueries\n" \
+        "\t\t(default is 3)\n" \
+        "\t-s src_addr\tUse the following IP address as the source address\n" \
+        "\t-t tos\tSet the type-of-service in probe packets to the following value\n" \
+        "\t\t(default 0)\n" \
+        "\t-w wait\tSet the time (in seconds) to wait for a response to a probe\n" \
+        "\t\t(default 3 sec.)."
+
+
 #define true_trivial_usage \
         ""
 #define true_full_usage \
diff --git a/include/applets.h b/include/applets.h
index e6ee3c95e..12a28d5be 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -386,6 +386,9 @@
 #ifdef BB_TR
         APPLET(tr, tr_main, _BB_DIR_USR_BIN)
 #endif
+#ifdef BB_TRACEROUTE
+        APPLET(traceroute, traceroute_main, _BB_DIR_USR_BIN)
+#endif
 #ifdef BB_TRUE_FALSE
         APPLET(true, true_main, _BB_DIR_BIN)
 #endif
diff --git a/include/usage.h b/include/usage.h
index a19f0fe22..70dafd81c 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1593,6 +1593,28 @@
         "$ echo "gdkkn vnqkc" | tr [a-y] [b-z]\n" \
         "hello world\n" 
 
+#define traceroute_trivial_usage \
+        "[-dnrv] [-m max_ttl] [-p port#] [-q nqueries]\n\
+        [-s src_addr] [-t tos] [-w wait] host [data size]"
+#define traceroute_full_usage \
+        "trace the route ip packets follow going to \"host\"\n" \
+        "Options:\n" \
+        "\t-d\tset SO_DEBUG options to socket\n" \
+        "\t-n\tPrint hop addresses numerically rather than symbolically\n" \
+        "\t-r\tBypass the normal routing tables and send directly to a host\n" \
+        "\t-v\tVerbose output\n" \
+        "\t-m max_ttl\tSet the max time-to-live (max number of hops)\n" \
+        "\t-p port#\tSet the base UDP port number used in probes\n" \
+        "\t\t(default is 33434)\n" \
+        "\t-q nqueries\tSet the number of probes per ``ttl'' to nqueries\n" \
+        "\t\t(default is 3)\n" \
+        "\t-s src_addr\tUse the following IP address as the source address\n" \
+        "\t-t tos\tSet the type-of-service in probe packets to the following value\n" \
+        "\t\t(default 0)\n" \
+        "\t-w wait\tSet the time (in seconds) to wait for a response to a probe\n" \
+        "\t\t(default 3 sec.)."
+
+
 #define true_trivial_usage \
         ""
 #define true_full_usage \
diff --git a/networking/traceroute.c b/networking/traceroute.c
new file mode 100644
index 000000000..a02be8a9e
--- /dev/null
+++ b/networking/traceroute.c
@@ -0,0 +1,593 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Van Jacobson.
+ *
+ * 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.
+ */
+
+/*
+ * traceroute host  - trace the route ip packets follow going to "host".
+ * Notes
+ * -----
+ * This program must be run by root or be setuid.  (I suggest that
+ * you *don't* make it setuid -- casual use could result in a lot
+ * of unnecessary traffic on our poor, congested nets.)
+ *
+ * I stole the idea for this program from Steve Deering.  Since
+ * the first release, I've learned that had I attended the right
+ * IETF working group meetings, I also could have stolen it from Guy
+ * Almes or Matt Mathis.  I don't know (or care) who came up with
+ * the idea first.  I envy the originators' perspicacity and I'm
+ * glad they didn't keep the idea a secret.
+ *
+ * Tim Seaver, Ken Adelman and C. Philip Wood provided bug fixes and/or
+ * enhancements to the original distribution.
+ *
+ * I've hacked up a round-trip-route version of this that works by
+ * sending a loose-source-routed udp datagram through the destination
+ * back to yourself.  Unfortunately, SO many gateways botch source
+ * routing, the thing is almost worthless.  Maybe one day...
+ *
+ *  -- Van Jacobson (van@helios.ee.lbl.gov)
+ *     Tue Dec 20 03:50:13 PST 1988
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <netdb.h>
+#include <endian.h>
+#include <arpa/inet.h>
+#include <netinet/udp.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+
+
+#define MAXPACKET       65535   /* max ip packet size */
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN  64
+#endif
+
+/*
+ * format of a (udp) probe packet.
+ */
+struct opacket {
+        struct ip ip;
+        struct udphdr udp;
+        u_char seq;             /* sequence number of this packet */
+        u_char ttl;             /* ttl packet left with */
+        struct timeval tv;      /* time packet left */
+};
+
+/*
+ * Definitions for internet protocol version 4.
+ * Per RFC 791, September 1981.
+ */
+#define IPVERSION       4
+
+
+#include "busybox.h"
+
+static int wait_for_reply (int, struct sockaddr_in *, int);
+static void send_probe (int, int);
+static double deltaT (struct timeval *, struct timeval *);
+static int packet_ok (u_char *, int, struct sockaddr_in *, int);
+static void print (u_char *, int, struct sockaddr_in *);
+static char *inetname (struct in_addr);
+
+static u_char  packet[512];            /* last inbound (icmp) packet */
+static struct opacket  *outpacket;     /* last output (udp) packet */
+
+static int s;                          /* receive (icmp) socket file descriptor */
+static int sndsock;                    /* send (udp) socket file descriptor */
+
+static struct sockaddr whereto;        /* Who to try to reach */
+static int datalen;                    /* How much data */
+
+static char *hostname;
+
+static int max_ttl = 30;
+static u_short ident;
+static u_short port = 32768+666;       /* start udp dest port # for probe packets */
+
+static int verbose;
+static int waittime = 5;               /* time to wait for response (in seconds) */
+static int nflag;                      /* print addresses numerically */
+
+int
+#ifndef BB_TRACEROUTE
+main(argc, argv)
+#else
+traceroute_main(argc, argv)
+#endif
+        int argc;
+        char *argv[];
+{
+        extern char *optarg;
+        extern int optind;
+        struct hostent *hp;
+        struct protoent *pe;
+        struct sockaddr_in from, *to;
+        int ch, i, on, probe, seq, tos, ttl;
+
+        int options = 0;                /* socket options */
+        char *source = 0;
+        int nprobes = 3;
+
+        on = 1;
+        seq = tos = 0;
+        to = (struct sockaddr_in *)&whereto;
+        while ((ch = getopt(argc, argv, "dm:np:q:rs:t:w:v")) != EOF)
+                switch(ch) {
+                case 'd':
+                        options |= SO_DEBUG;
+                        break;
+                case 'm':
+                        max_ttl = atoi(optarg);
+                        if (max_ttl <= 1)
+                                error_msg_and_die("max ttl must be >1.");
+                        break;
+                case 'n':
+                        nflag++;
+                        break;
+                case 'p':
+                        port = atoi(optarg);
+                        if (port < 1)
+                                error_msg_and_die("port must be >0.");
+                        break;
+                case 'q':
+                        nprobes = atoi(optarg);
+                        if (nprobes < 1)
+                                error_msg_and_die("nprobes must be >0.");
+                        break;
+                case 'r':
+                        options |= SO_DONTROUTE;
+                        break;
+                case 's':
+                        /*
+                         * set the ip source address of the outbound
+                         * probe (e.g., on a multi-homed host).
+                         */
+                        source = optarg;
+                        break;
+                case 't':
+                        tos = atoi(optarg);
+                        if (tos < 0 || tos > 255)
+                                error_msg_and_die("tos must be 0 to 255.");
+                        break;
+                case 'v':
+                        verbose++;
+                        break;
+                case 'w':
+                        waittime = atoi(optarg);
+                        if (waittime <= 1)
+                                error_msg_and_die("wait must be >1 sec.");
+                        break;
+                default:
+                        show_usage();
+                }
+        argc -= optind;
+        argv += optind;
+
+        if (argc < 1)
+                show_usage();
+
+        setlinebuf (stdout);
+
+        (void) bzero((char *)&whereto, sizeof(struct sockaddr));
+        to->sin_family = AF_INET;
+        to->sin_addr.s_addr = inet_addr(*argv);
+        if (to->sin_addr.s_addr != -1)
+                hostname = *argv;
+        else {
+                hp = gethostbyname(*argv);
+                if (hp) {
+                        to->sin_family = hp->h_addrtype;
+                        bcopy(hp->h_addr, (caddr_t)&to->sin_addr, hp->h_length);
+                        hostname = (char *)hp->h_name;
+                } else {
+                        error_msg_and_die("unknown host %s", *argv);
+                }
+        }
+        if (*++argv)
+                datalen = atoi(*argv);
+        if (datalen < 0 || datalen >= MAXPACKET - sizeof(struct opacket))
+                error_msg_and_die("packet size must be 0 <= s < %d.",
+                    MAXPACKET - sizeof(struct opacket));
+        datalen += sizeof(struct opacket);
+        outpacket = (struct opacket *)xmalloc((unsigned)datalen);
+        (void) bzero((char *)outpacket, datalen);
+        outpacket->ip.ip_dst = to->sin_addr;
+        outpacket->ip.ip_tos = tos;
+        outpacket->ip.ip_v = IPVERSION;
+        outpacket->ip.ip_id = 0;
+
+        ident = (getpid() & 0xffff) | 0x8000;
+
+        if ((pe = getprotobyname("icmp")) == NULL)
+                error_msg_and_die("icmp: unknown protocol");
+        if ((s = socket(AF_INET, SOCK_RAW, pe->p_proto)) < 0)
+                perror_msg_and_die("icmp socket");
+        if (options & SO_DEBUG)
+                (void) setsockopt(s, SOL_SOCKET, SO_DEBUG,
+                                  (char *)&on, sizeof(on));
+        if (options & SO_DONTROUTE)
+                (void) setsockopt(s, SOL_SOCKET, SO_DONTROUTE,
+                                  (char *)&on, sizeof(on));
+
+        if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
+                perror_msg_and_die("raw socket");
+#ifdef SO_SNDBUF
+        if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&datalen,
+                       sizeof(datalen)) < 0)
+                perror_msg_and_die("SO_SNDBUF");
+#endif SO_SNDBUF
+#ifdef IP_HDRINCL
+        if (setsockopt(sndsock, IPPROTO_IP, IP_HDRINCL, (char *)&on,
+                       sizeof(on)) < 0)
+                perror_msg_and_die("IP_HDRINCL");
+#endif IP_HDRINCL
+        if (options & SO_DEBUG)
+                (void) setsockopt(sndsock, SOL_SOCKET, SO_DEBUG,
+                                  (char *)&on, sizeof(on));
+        if (options & SO_DONTROUTE)
+                (void) setsockopt(sndsock, SOL_SOCKET, SO_DONTROUTE,
+                                  (char *)&on, sizeof(on));
+
+        if (source) {
+                (void) bzero((char *)&from, sizeof(struct sockaddr));
+                from.sin_family = AF_INET;
+                from.sin_addr.s_addr = inet_addr(source);
+                if (from.sin_addr.s_addr == -1)
+                        error_msg_and_die("unknown host %s", source);
+                outpacket->ip.ip_src = from.sin_addr;
+#ifndef IP_HDRINCL
+                if (bind(sndsock, (struct sockaddr *)&from, sizeof(from)) < 0)
+                        perror_msg_and_die("bind");
+#endif IP_HDRINCL
+        }
+
+        fprintf(stderr, "traceroute to %s (%s)", hostname,
+                inet_ntoa(to->sin_addr));
+        if (source)
+                fprintf(stderr, " from %s", source);
+        fprintf(stderr, ", %d hops max, %d byte packets\n", max_ttl, datalen);
+        (void) fflush(stderr);
+
+        for (ttl = 1; ttl <= max_ttl; ++ttl) {
+                u_long lastaddr = 0;
+                int got_there = 0;
+                int unreachable = 0;
+
+                printf("%2d ", ttl);
+                for (probe = 0; probe < nprobes; ++probe) {
+                        int cc, reset_timer;
+                        struct timeval t1, t2;
+                        struct timezone tz;
+                        struct ip *ip;
+
+                        (void) gettimeofday(&t1, &tz);
+                        send_probe(++seq, ttl);
+                        reset_timer = 1;
+                        while ((cc = wait_for_reply(s, &from, reset_timer)) != 0) {
+                                (void) gettimeofday(&t2, &tz);
+                                if ((i = packet_ok(packet, cc, &from, seq))) {
+                                        reset_timer = 1;
+                                        if (from.sin_addr.s_addr != lastaddr) {
+                                                print(packet, cc, &from);
+                                                lastaddr = from.sin_addr.s_addr;
+                                        }
+                                        printf("  %g ms", deltaT(&t1, &t2));
+                                        switch(i - 1) {
+                                        case ICMP_UNREACH_PORT:
+#ifndef ARCHAIC
+                                                ip = (struct ip *)packet;
+                                                if (ip->ip_ttl <= 1)
+                                                        printf(" !");
+#endif ARCHAIC
+                                                ++got_there;
+                                                break;
+                                        case ICMP_UNREACH_NET:
+                                                ++unreachable;
+                                                printf(" !N");
+                                                break;
+                                        case ICMP_UNREACH_HOST:
+                                                ++unreachable;
+                                                printf(" !H");
+                                                break;
+                                        case ICMP_UNREACH_PROTOCOL:
+                                                ++got_there;
+                                                printf(" !P");
+                                                break;
+                                        case ICMP_UNREACH_NEEDFRAG:
+                                                ++unreachable;
+                                                printf(" !F");
+                                                break;
+                                        case ICMP_UNREACH_SRCFAIL:
+                                                ++unreachable;
+                                                printf(" !S");
+                                                break;
+                                        }
+                                        break;
+                                } else
+                                        reset_timer = 0;
+                        }
+                        if (cc == 0)
+                                printf(" *");
+                        (void) fflush(stdout);
+                }
+                putchar('\n');
+                if (got_there || unreachable >= nprobes-1)
+                        exit(0);
+        }
+
+        return 0;
+}
+
+static int
+wait_for_reply(sock, from, reset_timer)
+        int sock;
+        struct sockaddr_in *from;
+        int reset_timer;
+{
+        fd_set fds;
+        static struct timeval wait;
+        int cc = 0;
+        int fromlen = sizeof (*from);
+
+        FD_ZERO(&fds);
+        FD_SET(sock, &fds);
+        if (reset_timer) {
+                /*
+                 * traceroute could hang if someone else has a ping
+                 * running and our ICMP reply gets dropped but we don't
+                 * realize it because we keep waking up to handle those
+                 * other ICMP packets that keep coming in.  To fix this,
+                 * "reset_timer" will only be true if the last packet that
+                 * came in was for us or if this is the first time we're
+                 * waiting for a reply since sending out a probe.  Note
+                 * that this takes advantage of the select() feature on
+                 * Linux where the remaining timeout is written to the
+                 * struct timeval area.
+                 */
+                wait.tv_sec = waittime;
+                wait.tv_usec = 0;
+        }
+
+        if (select(sock+1, &fds, (fd_set *)0, (fd_set *)0, &wait) > 0)
+                cc=recvfrom(s, (char *)packet, sizeof(packet), 0,
+                            (struct sockaddr *)from, &fromlen);
+
+        return(cc);
+}
+
+
+static void
+send_probe(seq, ttl)
+        int seq, ttl;
+{
+        struct opacket *op = outpacket;
+        struct ip *ip = &op->ip;
+        struct udphdr *up = &op->udp;
+        int i;
+        struct timezone tz;
+
+        ip->ip_off = 0;
+        ip->ip_hl = sizeof(*ip) >> 2;
+        ip->ip_p = IPPROTO_UDP;
+        ip->ip_len = datalen;
+        ip->ip_ttl = ttl;
+        ip->ip_v = IPVERSION;
+        ip->ip_id = htons(ident+seq);
+
+        up->source = htons(ident);
+        up->dest = htons(port+seq);
+        up->len = htons((u_short)(datalen - sizeof(struct ip)));
+        up->check = 0;
+
+        op->seq = seq;
+        op->ttl = ttl;
+        (void) gettimeofday(&op->tv, &tz);
+
+        i = sendto(sndsock, (char *)outpacket, datalen, 0, &whereto,
+                   sizeof(struct sockaddr));
+        if (i < 0 || i != datalen)  {
+                if (i<0)
+                        perror("sendto");
+                printf("traceroute: wrote %s %d chars, ret=%d\n", hostname,
+                        datalen, i);
+                (void) fflush(stdout);
+        }
+}
+
+
+static double
+deltaT(t1p, t2p)
+        struct timeval *t1p, *t2p;
+{
+        register double dt;
+
+        dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 +
+             (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0;
+        return (dt);
+}
+
+
+/*
+ * Convert an ICMP "type" field to a printable string.
+ */
+static const char *
+pr_type(t)
+        u_char t;
+{
+        static const char * const ttab[] = {
+        "Echo Reply",   "ICMP 1",       "ICMP 2",       "Dest Unreachable",
+        "Source Quench", "Redirect",    "ICMP 6",       "ICMP 7",
+        "Echo",         "ICMP 9",       "ICMP 10",      "Time Exceeded",
+        "Param Problem", "Timestamp",   "Timestamp Reply", "Info Request",
+        "Info Reply"
+        };
+
+        if(t > 16)
+                return("OUT-OF-RANGE");
+
+        return(ttab[t]);
+}
+
+
+static int
+packet_ok(buf, cc, from, seq)
+        u_char *buf;
+        int cc;
+        struct sockaddr_in *from;
+        int seq;
+{
+        register struct icmp *icp;
+        u_char type, code;
+        int hlen;
+#ifndef ARCHAIC
+        struct ip *ip;
+
+        ip = (struct ip *) buf;
+        hlen = ip->ip_hl << 2;
+        if (cc < hlen + ICMP_MINLEN) {
+                if (verbose)
+                        printf("packet too short (%d bytes) from %s\n", cc,
+                                inet_ntoa(from->sin_addr));
+                return (0);
+        }
+        cc -= hlen;
+        icp = (struct icmp *)(buf + hlen);
+#else
+        icp = (struct icmp *)buf;
+#endif ARCHAIC
+        type = icp->icmp_type; code = icp->icmp_code;
+        if ((type == ICMP_TIMXCEED && code == ICMP_TIMXCEED_INTRANS) ||
+            type == ICMP_UNREACH) {
+                struct ip *hip;
+                struct udphdr *up;
+
+                hip = &icp->icmp_ip;
+                hlen = hip->ip_hl << 2;
+                up = (struct udphdr *)((u_char *)hip + hlen);
+                if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP &&
+                    up->source == htons(ident) &&
+                    up->dest == htons(port+seq))
+                        return (type == ICMP_TIMXCEED? -1 : code+1);
+        }
+#ifndef ARCHAIC
+        if (verbose) {
+                int i;
+                u_long *lp = (u_long *)&icp->icmp_ip;
+
+                printf("\n%d bytes from %s to %s", cc,
+                        inet_ntoa(from->sin_addr), inet_ntoa(ip->ip_dst));
+                printf(": icmp type %d (%s) code %d\n", type, pr_type(type),
+                       icp->icmp_code);
+                for (i = 4; i < cc ; i += sizeof(long))
+                        printf("%2d: x%8.8lx\n", i, *lp++);
+        }
+#endif ARCHAIC
+        return(0);
+}
+
+
+static void
+print(buf, cc, from)
+        u_char *buf;
+        int cc;
+        struct sockaddr_in *from;
+{
+        struct ip *ip;
+        int hlen;
+
+        ip = (struct ip *) buf;
+        hlen = ip->ip_hl << 2;
+        cc -= hlen;
+
+        if (nflag)
+                printf(" %s", inet_ntoa(from->sin_addr));
+        else
+                printf(" %s (%s)", inetname(from->sin_addr),
+                       inet_ntoa(from->sin_addr));
+
+        if (verbose)
+                printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
+}
+
+
+/*
+ * Construct an Internet address representation.
+ * If the nflag has been supplied, give
+ * numeric value, otherwise try for symbolic name.
+ */
+static char *
+inetname(in)
+        struct in_addr in;
+{
+        register char *cp;
+        static char line[50];
+        struct hostent *hp;
+        static char domain[MAXHOSTNAMELEN + 1];
+        static int first = 1;
+
+        if (first && !nflag) {
+                first = 0;
+                if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
+                    (cp = index(domain, '.')))
+                        (void) strcpy(domain, cp + 1);
+                else
+                        domain[0] = 0;
+        }
+        cp = 0;
+        if (!nflag && in.s_addr != INADDR_ANY) {
+                hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
+                if (hp) {
+                        if ((cp = index(hp->h_name, '.')) &&
+                            !strcmp(cp + 1, domain))
+                                *cp = 0;
+                        cp = (char *)hp->h_name;
+                }
+        }
+        if (cp)
+                (void) strcpy(line, cp);
+        else {
+                in.s_addr = ntohl(in.s_addr);
+#define C(x)    ((x) & 0xff)
+                sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
+                        C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
+        }
+        return (line);
+}
diff --git a/traceroute.c b/traceroute.c
new file mode 100644
index 000000000..a02be8a9e
--- /dev/null
+++ b/traceroute.c
@@ -0,0 +1,593 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Van Jacobson.
+ *
+ * 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.
+ */
+
+/*
+ * traceroute host  - trace the route ip packets follow going to "host".
+ * Notes
+ * -----
+ * This program must be run by root or be setuid.  (I suggest that
+ * you *don't* make it setuid -- casual use could result in a lot
+ * of unnecessary traffic on our poor, congested nets.)
+ *
+ * I stole the idea for this program from Steve Deering.  Since
+ * the first release, I've learned that had I attended the right
+ * IETF working group meetings, I also could have stolen it from Guy
+ * Almes or Matt Mathis.  I don't know (or care) who came up with
+ * the idea first.  I envy the originators' perspicacity and I'm
+ * glad they didn't keep the idea a secret.
+ *
+ * Tim Seaver, Ken Adelman and C. Philip Wood provided bug fixes and/or
+ * enhancements to the original distribution.
+ *
+ * I've hacked up a round-trip-route version of this that works by
+ * sending a loose-source-routed udp datagram through the destination
+ * back to yourself.  Unfortunately, SO many gateways botch source
+ * routing, the thing is almost worthless.  Maybe one day...
+ *
+ *  -- Van Jacobson (van@helios.ee.lbl.gov)
+ *     Tue Dec 20 03:50:13 PST 1988
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <netdb.h>
+#include <endian.h>
+#include <arpa/inet.h>
+#include <netinet/udp.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+
+
+#define MAXPACKET       65535   /* max ip packet size */
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN  64
+#endif
+
+/*
+ * format of a (udp) probe packet.
+ */
+struct opacket {
+        struct ip ip;
+        struct udphdr udp;
+        u_char seq;             /* sequence number of this packet */
+        u_char ttl;             /* ttl packet left with */
+        struct timeval tv;      /* time packet left */
+};
+
+/*
+ * Definitions for internet protocol version 4.
+ * Per RFC 791, September 1981.
+ */
+#define IPVERSION       4
+
+
+#include "busybox.h"
+
+static int wait_for_reply (int, struct sockaddr_in *, int);
+static void send_probe (int, int);
+static double deltaT (struct timeval *, struct timeval *);
+static int packet_ok (u_char *, int, struct sockaddr_in *, int);
+static void print (u_char *, int, struct sockaddr_in *);
+static char *inetname (struct in_addr);
+
+static u_char  packet[512];            /* last inbound (icmp) packet */
+static struct opacket  *outpacket;     /* last output (udp) packet */
+
+static int s;                          /* receive (icmp) socket file descriptor */
+static int sndsock;                    /* send (udp) socket file descriptor */
+
+static struct sockaddr whereto;        /* Who to try to reach */
+static int datalen;                    /* How much data */
+
+static char *hostname;
+
+static int max_ttl = 30;
+static u_short ident;
+static u_short port = 32768+666;       /* start udp dest port # for probe packets */
+
+static int verbose;
+static int waittime = 5;               /* time to wait for response (in seconds) */
+static int nflag;                      /* print addresses numerically */
+
+int
+#ifndef BB_TRACEROUTE
+main(argc, argv)
+#else
+traceroute_main(argc, argv)
+#endif
+        int argc;
+        char *argv[];
+{
+        extern char *optarg;
+        extern int optind;
+        struct hostent *hp;
+        struct protoent *pe;
+        struct sockaddr_in from, *to;
+        int ch, i, on, probe, seq, tos, ttl;
+
+        int options = 0;                /* socket options */
+        char *source = 0;
+        int nprobes = 3;
+
+        on = 1;
+        seq = tos = 0;
+        to = (struct sockaddr_in *)&whereto;
+        while ((ch = getopt(argc, argv, "dm:np:q:rs:t:w:v")) != EOF)
+                switch(ch) {
+                case 'd':
+                        options |= SO_DEBUG;
+                        break;
+                case 'm':
+                        max_ttl = atoi(optarg);
+                        if (max_ttl <= 1)
+                                error_msg_and_die("max ttl must be >1.");
+                        break;
+                case 'n':
+                        nflag++;
+                        break;
+                case 'p':
+                        port = atoi(optarg);
+                        if (port < 1)
+                                error_msg_and_die("port must be >0.");
+                        break;
+                case 'q':
+                        nprobes = atoi(optarg);
+                        if (nprobes < 1)
+                                error_msg_and_die("nprobes must be >0.");
+                        break;
+                case 'r':
+                        options |= SO_DONTROUTE;
+                        break;
+                case 's':
+                        /*
+                         * set the ip source address of the outbound
+                         * probe (e.g., on a multi-homed host).
+                         */
+                        source = optarg;
+                        break;
+                case 't':
+                        tos = atoi(optarg);
+                        if (tos < 0 || tos > 255)
+                                error_msg_and_die("tos must be 0 to 255.");
+                        break;
+                case 'v':
+                        verbose++;
+                        break;
+                case 'w':
+                        waittime = atoi(optarg);
+                        if (waittime <= 1)
+                                error_msg_and_die("wait must be >1 sec.");
+                        break;
+                default:
+                        show_usage();
+                }
+        argc -= optind;
+        argv += optind;
+
+        if (argc < 1)
+                show_usage();
+
+        setlinebuf (stdout);
+
+        (void) bzero((char *)&whereto, sizeof(struct sockaddr));
+        to->sin_family = AF_INET;
+        to->sin_addr.s_addr = inet_addr(*argv);
+        if (to->sin_addr.s_addr != -1)
+                hostname = *argv;
+        else {
+                hp = gethostbyname(*argv);
+                if (hp) {
+                        to->sin_family = hp->h_addrtype;
+                        bcopy(hp->h_addr, (caddr_t)&to->sin_addr, hp->h_length);
+                        hostname = (char *)hp->h_name;
+                } else {
+                        error_msg_and_die("unknown host %s", *argv);
+                }
+        }
+        if (*++argv)
+                datalen = atoi(*argv);
+        if (datalen < 0 || datalen >= MAXPACKET - sizeof(struct opacket))
+                error_msg_and_die("packet size must be 0 <= s < %d.",
+                    MAXPACKET - sizeof(struct opacket));
+        datalen += sizeof(struct opacket);
+        outpacket = (struct opacket *)xmalloc((unsigned)datalen);
+        (void) bzero((char *)outpacket, datalen);
+        outpacket->ip.ip_dst = to->sin_addr;
+        outpacket->ip.ip_tos = tos;
+        outpacket->ip.ip_v = IPVERSION;
+        outpacket->ip.ip_id = 0;
+
+        ident = (getpid() & 0xffff) | 0x8000;
+
+        if ((pe = getprotobyname("icmp")) == NULL)
+                error_msg_and_die("icmp: unknown protocol");
+        if ((s = socket(AF_INET, SOCK_RAW, pe->p_proto)) < 0)
+                perror_msg_and_die("icmp socket");
+        if (options & SO_DEBUG)
+                (void) setsockopt(s, SOL_SOCKET, SO_DEBUG,
+                                  (char *)&on, sizeof(on));
+        if (options & SO_DONTROUTE)
+                (void) setsockopt(s, SOL_SOCKET, SO_DONTROUTE,
+                                  (char *)&on, sizeof(on));
+
+        if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
+                perror_msg_and_die("raw socket");
+#ifdef SO_SNDBUF
+        if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&datalen,
+                       sizeof(datalen)) < 0)
+                perror_msg_and_die("SO_SNDBUF");
+#endif SO_SNDBUF
+#ifdef IP_HDRINCL
+        if (setsockopt(sndsock, IPPROTO_IP, IP_HDRINCL, (char *)&on,
+                       sizeof(on)) < 0)
+                perror_msg_and_die("IP_HDRINCL");
+#endif IP_HDRINCL
+        if (options & SO_DEBUG)
+                (void) setsockopt(sndsock, SOL_SOCKET, SO_DEBUG,
+                                  (char *)&on, sizeof(on));
+        if (options & SO_DONTROUTE)
+                (void) setsockopt(sndsock, SOL_SOCKET, SO_DONTROUTE,
+                                  (char *)&on, sizeof(on));
+
+        if (source) {
+                (void) bzero((char *)&from, sizeof(struct sockaddr));
+                from.sin_family = AF_INET;
+                from.sin_addr.s_addr = inet_addr(source);
+                if (from.sin_addr.s_addr == -1)
+                        error_msg_and_die("unknown host %s", source);
+                outpacket->ip.ip_src = from.sin_addr;
+#ifndef IP_HDRINCL
+                if (bind(sndsock, (struct sockaddr *)&from, sizeof(from)) < 0)
+                        perror_msg_and_die("bind");
+#endif IP_HDRINCL
+        }
+
+        fprintf(stderr, "traceroute to %s (%s)", hostname,
+                inet_ntoa(to->sin_addr));
+        if (source)
+                fprintf(stderr, " from %s", source);
+        fprintf(stderr, ", %d hops max, %d byte packets\n", max_ttl, datalen);
+        (void) fflush(stderr);
+
+        for (ttl = 1; ttl <= max_ttl; ++ttl) {
+                u_long lastaddr = 0;
+                int got_there = 0;
+                int unreachable = 0;
+
+                printf("%2d ", ttl);
+                for (probe = 0; probe < nprobes; ++probe) {
+                        int cc, reset_timer;
+                        struct timeval t1, t2;
+                        struct timezone tz;
+                        struct ip *ip;
+
+                        (void) gettimeofday(&t1, &tz);
+                        send_probe(++seq, ttl);
+                        reset_timer = 1;
+                        while ((cc = wait_for_reply(s, &from, reset_timer)) != 0) {
+                                (void) gettimeofday(&t2, &tz);
+                                if ((i = packet_ok(packet, cc, &from, seq))) {
+                                        reset_timer = 1;
+                                        if (from.sin_addr.s_addr != lastaddr) {
+                                                print(packet, cc, &from);
+                                                lastaddr = from.sin_addr.s_addr;
+                                        }
+                                        printf("  %g ms", deltaT(&t1, &t2));
+                                        switch(i - 1) {
+                                        case ICMP_UNREACH_PORT:
+#ifndef ARCHAIC
+                                                ip = (struct ip *)packet;
+                                                if (ip->ip_ttl <= 1)
+                                                        printf(" !");
+#endif ARCHAIC
+                                                ++got_there;
+                                                break;
+                                        case ICMP_UNREACH_NET:
+                                                ++unreachable;
+                                                printf(" !N");
+                                                break;
+                                        case ICMP_UNREACH_HOST:
+                                                ++unreachable;
+                                                printf(" !H");
+                                                break;
+                                        case ICMP_UNREACH_PROTOCOL:
+                                                ++got_there;
+                                                printf(" !P");
+                                                break;
+                                        case ICMP_UNREACH_NEEDFRAG:
+                                                ++unreachable;
+                                                printf(" !F");
+                                                break;
+                                        case ICMP_UNREACH_SRCFAIL:
+                                                ++unreachable;
+                                                printf(" !S");
+                                                break;
+                                        }
+                                        break;
+                                } else
+                                        reset_timer = 0;
+                        }
+                        if (cc == 0)
+                                printf(" *");
+                        (void) fflush(stdout);
+                }
+                putchar('\n');
+                if (got_there || unreachable >= nprobes-1)
+                        exit(0);
+        }
+
+        return 0;
+}
+
+static int
+wait_for_reply(sock, from, reset_timer)
+        int sock;
+        struct sockaddr_in *from;
+        int reset_timer;
+{
+        fd_set fds;
+        static struct timeval wait;
+        int cc = 0;
+        int fromlen = sizeof (*from);
+
+        FD_ZERO(&fds);
+        FD_SET(sock, &fds);
+        if (reset_timer) {
+                /*
+                 * traceroute could hang if someone else has a ping
+                 * running and our ICMP reply gets dropped but we don't
+                 * realize it because we keep waking up to handle those
+                 * other ICMP packets that keep coming in.  To fix this,
+                 * "reset_timer" will only be true if the last packet that
+                 * came in was for us or if this is the first time we're
+                 * waiting for a reply since sending out a probe.  Note
+                 * that this takes advantage of the select() feature on
+                 * Linux where the remaining timeout is written to the
+                 * struct timeval area.
+                 */
+                wait.tv_sec = waittime;
+                wait.tv_usec = 0;
+        }
+
+        if (select(sock+1, &fds, (fd_set *)0, (fd_set *)0, &wait) > 0)
+                cc=recvfrom(s, (char *)packet, sizeof(packet), 0,
+                            (struct sockaddr *)from, &fromlen);
+
+        return(cc);
+}
+
+
+static void
+send_probe(seq, ttl)
+        int seq, ttl;
+{
+        struct opacket *op = outpacket;
+        struct ip *ip = &op->ip;
+        struct udphdr *up = &op->udp;
+        int i;
+        struct timezone tz;
+
+        ip->ip_off = 0;
+        ip->ip_hl = sizeof(*ip) >> 2;
+        ip->ip_p = IPPROTO_UDP;
+        ip->ip_len = datalen;
+        ip->ip_ttl = ttl;
+        ip->ip_v = IPVERSION;
+        ip->ip_id = htons(ident+seq);
+
+        up->source = htons(ident);
+        up->dest = htons(port+seq);
+        up->len = htons((u_short)(datalen - sizeof(struct ip)));
+        up->check = 0;
+
+        op->seq = seq;
+        op->ttl = ttl;
+        (void) gettimeofday(&op->tv, &tz);
+
+        i = sendto(sndsock, (char *)outpacket, datalen, 0, &whereto,
+                   sizeof(struct sockaddr));
+        if (i < 0 || i != datalen)  {
+                if (i<0)
+                        perror("sendto");
+                printf("traceroute: wrote %s %d chars, ret=%d\n", hostname,
+                        datalen, i);
+                (void) fflush(stdout);
+        }
+}
+
+
+static double
+deltaT(t1p, t2p)
+        struct timeval *t1p, *t2p;
+{
+        register double dt;
+
+        dt = (double)(t2p->tv_sec - t1p->tv_sec) * 1000.0 +
+             (double)(t2p->tv_usec - t1p->tv_usec) / 1000.0;
+        return (dt);
+}
+
+
+/*
+ * Convert an ICMP "type" field to a printable string.
+ */
+static const char *
+pr_type(t)
+        u_char t;
+{
+        static const char * const ttab[] = {
+        "Echo Reply",   "ICMP 1",       "ICMP 2",       "Dest Unreachable",
+        "Source Quench", "Redirect",    "ICMP 6",       "ICMP 7",
+        "Echo",         "ICMP 9",       "ICMP 10",      "Time Exceeded",
+        "Param Problem", "Timestamp",   "Timestamp Reply", "Info Request",
+        "Info Reply"
+        };
+
+        if(t > 16)
+                return("OUT-OF-RANGE");
+
+        return(ttab[t]);
+}
+
+
+static int
+packet_ok(buf, cc, from, seq)
+        u_char *buf;
+        int cc;
+        struct sockaddr_in *from;
+        int seq;
+{
+        register struct icmp *icp;
+        u_char type, code;
+        int hlen;
+#ifndef ARCHAIC
+        struct ip *ip;
+
+        ip = (struct ip *) buf;
+        hlen = ip->ip_hl << 2;
+        if (cc < hlen + ICMP_MINLEN) {
+                if (verbose)
+                        printf("packet too short (%d bytes) from %s\n", cc,
+                                inet_ntoa(from->sin_addr));
+                return (0);
+        }
+        cc -= hlen;
+        icp = (struct icmp *)(buf + hlen);
+#else
+        icp = (struct icmp *)buf;
+#endif ARCHAIC
+        type = icp->icmp_type; code = icp->icmp_code;
+        if ((type == ICMP_TIMXCEED && code == ICMP_TIMXCEED_INTRANS) ||
+            type == ICMP_UNREACH) {
+                struct ip *hip;
+                struct udphdr *up;
+
+                hip = &icp->icmp_ip;
+                hlen = hip->ip_hl << 2;
+                up = (struct udphdr *)((u_char *)hip + hlen);
+                if (hlen + 12 <= cc && hip->ip_p == IPPROTO_UDP &&
+                    up->source == htons(ident) &&
+                    up->dest == htons(port+seq))
+                        return (type == ICMP_TIMXCEED? -1 : code+1);
+        }
+#ifndef ARCHAIC
+        if (verbose) {
+                int i;
+                u_long *lp = (u_long *)&icp->icmp_ip;
+
+                printf("\n%d bytes from %s to %s", cc,
+                        inet_ntoa(from->sin_addr), inet_ntoa(ip->ip_dst));
+                printf(": icmp type %d (%s) code %d\n", type, pr_type(type),
+                       icp->icmp_code);
+                for (i = 4; i < cc ; i += sizeof(long))
+                        printf("%2d: x%8.8lx\n", i, *lp++);
+        }
+#endif ARCHAIC
+        return(0);
+}
+
+
+static void
+print(buf, cc, from)
+        u_char *buf;
+        int cc;
+        struct sockaddr_in *from;
+{
+        struct ip *ip;
+        int hlen;
+
+        ip = (struct ip *) buf;
+        hlen = ip->ip_hl << 2;
+        cc -= hlen;
+
+        if (nflag)
+                printf(" %s", inet_ntoa(from->sin_addr));
+        else
+                printf(" %s (%s)", inetname(from->sin_addr),
+                       inet_ntoa(from->sin_addr));
+
+        if (verbose)
+                printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
+}
+
+
+/*
+ * Construct an Internet address representation.
+ * If the nflag has been supplied, give
+ * numeric value, otherwise try for symbolic name.
+ */
+static char *
+inetname(in)
+        struct in_addr in;
+{
+        register char *cp;
+        static char line[50];
+        struct hostent *hp;
+        static char domain[MAXHOSTNAMELEN + 1];
+        static int first = 1;
+
+        if (first && !nflag) {
+                first = 0;
+                if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
+                    (cp = index(domain, '.')))
+                        (void) strcpy(domain, cp + 1);
+                else
+                        domain[0] = 0;
+        }
+        cp = 0;
+        if (!nflag && in.s_addr != INADDR_ANY) {
+                hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
+                if (hp) {
+                        if ((cp = index(hp->h_name, '.')) &&
+                            !strcmp(cp + 1, domain))
+                                *cp = 0;
+                        cp = (char *)hp->h_name;
+                }
+        }
+        if (cp)
+                (void) strcpy(line, cp);
+        else {
+                in.s_addr = ntohl(in.s_addr);
+#define C(x)    ((x) & 0xff)
+                sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
+                        C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
+        }
+        return (line);
+}
diff --git a/usage.h b/usage.h
index a19f0fe22..70dafd81c 100644
--- a/usage.h
+++ b/usage.h
@@ -1593,6 +1593,28 @@
         "$ echo "gdkkn vnqkc" | tr [a-y] [b-z]\n" \
         "hello world\n" 
 
+#define traceroute_trivial_usage \
+        "[-dnrv] [-m max_ttl] [-p port#] [-q nqueries]\n\
+        [-s src_addr] [-t tos] [-w wait] host [data size]"
+#define traceroute_full_usage \
+        "trace the route ip packets follow going to \"host\"\n" \
+        "Options:\n" \
+        "\t-d\tset SO_DEBUG options to socket\n" \
+        "\t-n\tPrint hop addresses numerically rather than symbolically\n" \
+        "\t-r\tBypass the normal routing tables and send directly to a host\n" \
+        "\t-v\tVerbose output\n" \
+        "\t-m max_ttl\tSet the max time-to-live (max number of hops)\n" \
+        "\t-p port#\tSet the base UDP port number used in probes\n" \
+        "\t\t(default is 33434)\n" \
+        "\t-q nqueries\tSet the number of probes per ``ttl'' to nqueries\n" \
+        "\t\t(default is 3)\n" \
+        "\t-s src_addr\tUse the following IP address as the source address\n" \
+        "\t-t tos\tSet the type-of-service in probe packets to the following value\n" \
+        "\t\t(default 0)\n" \
+        "\t-w wait\tSet the time (in seconds) to wait for a response to a probe\n" \
+        "\t\t(default 3 sec.)."
+
+
 #define true_trivial_usage \
         ""
 #define true_full_usage \