No longer needed
[oweals/busybox.git] / networking / traceroute.c
index a3abd0a00761bc2ec6885bf9cd421a072345c478..44ffdf07e34704ad3ee50abc69f29baa5f6b52fb 100644 (file)
  * 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
+ * 3. 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.
  *
@@ -62,9 +58,9 @@
  *     Tue Dec 20 03:50:13 PST 1988
  */
 
-#undef BB_FEATURE_TRACEROUTE_VERBOSE
-//#define BB_FEATURE_TRACEROUTE_VERBOSE
-#undef BB_FEATURE_TRACEROUTE_SO_DEBUG   /* not in documentation man */
+#undef CONFIG_FEATURE_TRACEROUTE_VERBOSE
+//#define CONFIG_FEATURE_TRACEROUTE_VERBOSE
+#undef CONFIG_FEATURE_TRACEROUTE_SO_DEBUG   /* not in documentation man */
 
 #include <stdio.h>
 #include <errno.h>
 #include <string.h>
 #include <unistd.h>
 #include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
+#include "inet_common.h"
 #include <netdb.h>
 #include <endian.h>
-#include <arpa/inet.h>
 #include <netinet/udp.h>
 #include <netinet/ip.h>
 #include <netinet/ip_icmp.h>
 
- /* It turns out that libc5 doesn't have proper icmp support
- * built into it header files, so we have to supplement it */
-#if __GNU_LIBRARY__ < 5
-static const int ICMP_MINLEN = 8;                              /* abs minimum */
-
-struct icmp_ra_addr
-{
-  u_int32_t ira_addr;
-  u_int32_t ira_preference;
-};
-
-
-struct icmp
-{
-  u_int8_t  icmp_type; /* type of message, see below */
-  u_int8_t  icmp_code; /* type sub code */
-  u_int16_t icmp_cksum;        /* ones complement checksum of struct */
-  union
-  {
-    u_char ih_pptr;            /* ICMP_PARAMPROB */
-    struct in_addr ih_gwaddr;  /* gateway address */
-    struct ih_idseq            /* echo datagram */
-    {
-      u_int16_t icd_id;
-      u_int16_t icd_seq;
-    } ih_idseq;
-    u_int32_t ih_void;
-
-    /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
-    struct ih_pmtu
-    {
-      u_int16_t ipm_void;
-      u_int16_t ipm_nextmtu;
-    } ih_pmtu;
-
-    struct ih_rtradv
-    {
-      u_int8_t irt_num_addrs;
-      u_int8_t irt_wpa;
-      u_int16_t irt_lifetime;
-    } ih_rtradv;
-  } icmp_hun;
-#define        icmp_pptr       icmp_hun.ih_pptr
-#define        icmp_gwaddr     icmp_hun.ih_gwaddr
-#define        icmp_id         icmp_hun.ih_idseq.icd_id
-#define        icmp_seq        icmp_hun.ih_idseq.icd_seq
-#define        icmp_void       icmp_hun.ih_void
-#define        icmp_pmvoid     icmp_hun.ih_pmtu.ipm_void
-#define        icmp_nextmtu    icmp_hun.ih_pmtu.ipm_nextmtu
-#define        icmp_num_addrs  icmp_hun.ih_rtradv.irt_num_addrs
-#define        icmp_wpa        icmp_hun.ih_rtradv.irt_wpa
-#define        icmp_lifetime   icmp_hun.ih_rtradv.irt_lifetime
-  union
-  {
-    struct
-    {
-      u_int32_t its_otime;
-      u_int32_t its_rtime;
-      u_int32_t its_ttime;
-    } id_ts;
-    struct
-    {
-      struct ip idi_ip;
-      /* options and then 64 bits of data */
-    } id_ip;
-    struct icmp_ra_addr id_radv;
-    u_int32_t   id_mask;
-    u_int8_t    id_data[1];
-  } icmp_dun;
-#define        icmp_otime      icmp_dun.id_ts.its_otime
-#define        icmp_rtime      icmp_dun.id_ts.its_rtime
-#define        icmp_ttime      icmp_dun.id_ts.its_ttime
-#define        icmp_ip         icmp_dun.id_ip.idi_ip
-#define        icmp_radv       icmp_dun.id_radv
-#define        icmp_mask       icmp_dun.id_mask
-#define        icmp_data       icmp_dun.id_data
-};
-
-#define        ICMP_MINLEN     8                               /* abs minimum */
-#define        ICMP_UNREACH            3               /* dest unreachable, codes: */
-#define        ICMP_TIMXCEED           11              /* time exceeded, code: */
-#define        ICMP_TIMXCEED_INTRANS   0               /* ttl==0 in transit */
-#define        ICMP_UNREACH_NET                0       /* bad net */
-#define        ICMP_UNREACH_HOST               1       /* bad host */
-#define        ICMP_UNREACH_PROTOCOL           2       /* bad protocol */
-#define        ICMP_UNREACH_PORT               3       /* bad port */
-#define        ICMP_UNREACH_NEEDFRAG           4       /* IP_DF caused drop */
-#define        ICMP_UNREACH_SRCFAIL            5       /* src route failed */
-#endif
-
 
 #define MAXPACKET       65535   /* max ip packet size */
 #ifndef MAXHOSTNAMELEN
@@ -213,7 +116,7 @@ static int max_ttl = 30;
 static u_short ident;
 static u_short port = 32768+666;       /* start udp dest port # for probe packets */
 
-#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+#ifdef CONFIG_FEATURE_TRACEROUTE_VERBOSE
 static int verbose;
 #endif
 static int waittime = 5;               /* time to wait for response (in seconds) */
@@ -228,27 +131,23 @@ static inline void
 inetname(struct sockaddr_in *from)
 {
        char *cp;
-       struct hostent *hp;
        static char domain[MAXHOSTNAMELEN + 1];
+       char name[MAXHOSTNAMELEN + 1];
        static int first = 1;
        const char *ina;
 
        if (first && !nflag) {
                first = 0;
-               if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
-                   (cp = strchr(domain, '.')))
-                       (void) strcpy(domain, cp + 1);
-               else
+               if (getdomainname(domain, MAXHOSTNAMELEN) != 0)
                        domain[0] = 0;
        }
        cp = 0;
        if (!nflag && from->sin_addr.s_addr != INADDR_ANY) {
-               hp = gethostbyaddr((char *)&(from->sin_addr), sizeof (from->sin_addr), AF_INET);
-               if (hp) {
-                       if ((cp = strchr(hp->h_name, '.')) &&
+               if(INET_rresolve(name, sizeof(name), from, 0x4000, 0xffffffff) >= 0) {
+                       if ((cp = strchr(name, '.')) &&
                            !strcmp(cp + 1, domain))
                                *cp = 0;
-                       cp = (char *)hp->h_name;
+                       cp = (char *)name;
                }
        }
        ina = inet_ntoa(from->sin_addr);
@@ -269,7 +168,7 @@ print(u_char *buf, int cc, struct sockaddr_in *from)
        cc -= hlen;
 
        inetname(from);
-#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+#ifdef CONFIG_FEATURE_TRACEROUTE_VERBOSE
        if (verbose)
                printf (" %d bytes to %s", cc, inet_ntoa (ip->ip_dst));
 #endif
@@ -319,13 +218,12 @@ wait_for_reply(int sock, struct sockaddr_in *from, int reset_timer)
        return(cc);
 }
 
-#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+#ifdef CONFIG_FEATURE_TRACEROUTE_VERBOSE
 /*
  * Convert an ICMP "type" field to a printable string.
  */
 static inline const char *
-pr_type(t)
-       u_char t;
+pr_type(u_char t)
 {
        static const char * const ttab[] = {
        "Echo Reply",   "ICMP 1",       "ICMP 2",       "Dest Unreachable",
@@ -353,7 +251,7 @@ packet_ok(u_char *buf, int cc, struct sockaddr_in *from, int seq)
        ip = (struct ip *) buf;
        hlen = ip->ip_hl << 2;
        if (cc < hlen + ICMP_MINLEN) {
-#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+#ifdef CONFIG_FEATURE_TRACEROUTE_VERBOSE
                if (verbose)
                        printf("packet too short (%d bytes) from %s\n", cc,
                                inet_ntoa(from->sin_addr));
@@ -376,7 +274,7 @@ packet_ok(u_char *buf, int cc, struct sockaddr_in *from, int seq)
                    up->dest == htons(port+seq))
                        return (type == ICMP_TIMXCEED? -1 : code+1);
        }
-#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+#ifdef CONFIG_FEATURE_TRACEROUTE_VERBOSE
        if (verbose) {
                int i;
                u_long *lp = (u_long *)&icp->icmp_ip;
@@ -430,13 +328,11 @@ send_probe(int seq, int ttl)
 
 
 int
-#ifndef BB_TRACEROUTE
-main(argc, argv)
+#ifndef CONFIG_TRACEROUTE
+main(int argc, char *argv[])
 #else
-traceroute_main(argc, argv)
+traceroute_main(int argc, char *argv[])
 #endif
-       int argc;
-       char *argv[];
 {
        extern char *optarg;
        extern int optind;
@@ -454,14 +350,14 @@ traceroute_main(argc, argv)
        while ((ch = getopt(argc, argv, "dm:np:q:rs:t:w:v")) != EOF)
                switch(ch) {
                case 'd':
-#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
+#ifdef CONFIG_FEATURE_TRACEROUTE_SO_DEBUG
                        options |= SO_DEBUG;
 #endif
                        break;
                case 'm':
                        max_ttl = atoi(optarg);
                        if (max_ttl <= 1)
-                               error_msg_and_die("max ttl must be >1.");
+                               bb_error_msg_and_die("max ttl must be >1.");
                        break;
                case 'n':
                        nflag++;
@@ -469,12 +365,12 @@ traceroute_main(argc, argv)
                case 'p':
                        port = atoi(optarg);
                        if (port < 1)
-                               error_msg_and_die("port must be >0.");
+                               bb_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.");
+                               bb_error_msg_and_die("nprobes must be >0.");
                        break;
                case 'r':
                        options |= SO_DONTROUTE;
@@ -489,26 +385,26 @@ traceroute_main(argc, argv)
                case 't':
                        tos = atoi(optarg);
                        if (tos < 0 || tos > 255)
-                               error_msg_and_die("tos must be 0 to 255.");
+                               bb_error_msg_and_die("tos must be 0 to 255.");
                        break;
                case 'v':
-#ifdef BB_FEATURE_TRACEROUTE_VERBOSE
+#ifdef CONFIG_FEATURE_TRACEROUTE_VERBOSE
                        verbose++;
 #endif
                        break;
                case 'w':
                        waittime = atoi(optarg);
                        if (waittime <= 1)
-                               error_msg_and_die("wait must be >1 sec.");
+                               bb_error_msg_and_die("wait must be >1 sec.");
                        break;
                default:
-                       show_usage();
+                       bb_show_usage();
                }
        argc -= optind;
        argv += optind;
 
        if (argc < 1)
-               show_usage();
+               bb_show_usage();
 
        setlinebuf (stdout);
 
@@ -520,7 +416,7 @@ traceroute_main(argc, 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.",
+               bb_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);
@@ -533,11 +429,11 @@ traceroute_main(argc, argv)
        ident = (getpid() & 0xffff) | 0x8000;
 
        if ((sndsock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
-               perror_msg_and_die(can_not_create_raw_socket);
+               bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
 
        s = create_icmp_socket();
 
-#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
+#ifdef CONFIG_FEATURE_TRACEROUTE_SO_DEBUG
        if (options & SO_DEBUG)
                (void) setsockopt(s, SOL_SOCKET, SO_DEBUG,
                                  (char *)&on, sizeof(on));
@@ -548,14 +444,14 @@ traceroute_main(argc, argv)
 #ifdef SO_SNDBUF
        if (setsockopt(sndsock, SOL_SOCKET, SO_SNDBUF, (char *)&datalen,
                       sizeof(datalen)) < 0)
-               perror_msg_and_die("SO_SNDBUF");
-#endif SO_SNDBUF
+               bb_perror_msg_and_die("SO_SNDBUF");
+#endif
 #ifdef IP_HDRINCL
        if (setsockopt(sndsock, IPPROTO_IP, IP_HDRINCL, (char *)&on,
                       sizeof(on)) < 0)
-               perror_msg_and_die("IP_HDRINCL");
-#endif IP_HDRINCL
-#ifdef BB_FEATURE_TRACEROUTE_SO_DEBUG
+               bb_perror_msg_and_die("IP_HDRINCL");
+#endif
+#ifdef CONFIG_FEATURE_TRACEROUTE_SO_DEBUG
        if (options & SO_DEBUG)
                (void) setsockopt(sndsock, SOL_SOCKET, SO_DEBUG,
                                  (char *)&on, sizeof(on));
@@ -569,12 +465,12 @@ traceroute_main(argc, argv)
                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);
+                       bb_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
+                       bb_perror_msg_and_die("bind");
+#endif
        }
 
        fprintf(stderr, "traceroute to %s (%s)", hostname,
@@ -645,7 +541,7 @@ traceroute_main(argc, argv)
                }
                putchar('\n');
                if (got_there || unreachable >= nprobes-1)
-                       exit(0);
+                       return 0;
        }
 
        return 0;