ip/ip.c

   1 /*
   2  * ip.c         "ip" utility frontend.
   3  *
   4  *              This program is free software; you can redistribute it and/or
   5  *              modify it under the terms of the GNU General Public License
   6  *              as published by the Free Software Foundation; either version
   7  *              2 of the License, or (at your option) any later version.
   8  *
   9  * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  10  *
  11  *
  12  * Changes:
  13  *
  14  * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <syslog.h>
  21 #include <fcntl.h>
  22 #include <sys/socket.h>
  23 #include <netinet/in.h>
  24 #include <string.h>
  25
  26 #include "SNAPSHOT.h"
  27 #include "utils.h"
  28 #include "ip_common.h"
  29
  30 int preferred_family = AF_UNSPEC;
  31 int show_stats = 0;
  32 int resolve_hosts = 0;
  33 int oneline = 0;
  34 char * _SL_ = NULL;
  35
  36 static void usage(void) __attribute__((noreturn));
  37
  38 static void usage(void)
  39 {
  40         fprintf(stderr,
  41 "Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
  42 "where  OBJECT := { link | addr | route | rule | neigh | tunnel |\n"
  43 "                   maddr | mroute | monitor | xfrm }\n"
  44 "       OPTIONS := { -V[ersion] | -s[tatistics] | -r[esolve] |\n"
  45 "                    -f[amily] { inet | inet6 | ipx | dnet | link } | -o[neline] }\n");
  46         exit(-1);
  47 }
  48
  49 int main(int argc, char **argv)
  50 {
  51         char *basename;
  52
  53         basename = strrchr(argv[0], '/');
  54         if (basename == NULL)
  55                 basename = argv[0];
  56         else
  57                 basename++;
  58
  59         while (argc > 1) {
  60                 char *opt = argv[1];
  61                 if (strcmp(opt,"--") == 0) {
  62                         argc--; argv++;
  63                         break;
  64                 }
  65                 if (opt[0] != '-')
  66                         break;
  67                 if (opt[1] == '-')
  68                         opt++;
  69                 if (matches(opt, "-family") == 0) {
  70                         argc--;
  71                         argv++;
  72                         if (argc <= 1)
  73                                 usage();
  74                         if (strcmp(argv[1], "inet") == 0)
  75                                 preferred_family = AF_INET;
  76                         else if (strcmp(argv[1], "inet6") == 0)
  77                                 preferred_family = AF_INET6;
  78                         else if (strcmp(argv[1], "dnet") == 0)
  79                                 preferred_family = AF_DECnet;
  80                         else if (strcmp(argv[1], "link") == 0)
  81                                 preferred_family = AF_PACKET;
  82                         else if (strcmp(argv[1], "ipx") == 0)
  83                                 preferred_family = AF_IPX;
  84                         else if (strcmp(argv[1], "help") == 0)
  85                                 usage();
  86                         else
  87                                 invarg(argv[1], "invalid protocol family");
  88                 } else if (strcmp(opt, "-4") == 0) {
  89                         preferred_family = AF_INET;
  90                 } else if (strcmp(opt, "-6") == 0) {
  91                         preferred_family = AF_INET6;
  92                 } else if (strcmp(opt, "-0") == 0) {
  93                         preferred_family = AF_PACKET;
  94                 } else if (strcmp(opt, "-I") == 0) {
  95                         preferred_family = AF_IPX;
  96                 } else if (strcmp(opt, "-D") == 0) {
  97                         preferred_family = AF_DECnet;
  98                 } else if (matches(opt, "-stats") == 0 ||
  99                            matches(opt, "-statistics") == 0) {
 100                         ++show_stats;
 101                 } else if (matches(opt, "-resolve") == 0) {
 102                         ++resolve_hosts;
 103                 } else if (matches(opt, "-oneline") == 0) {
 104                         ++oneline;
 105 #if 0
 106                 } else if (matches(opt, "-numeric") == 0) {
 107                         rtnl_names_numeric++;
 108 #endif
 109                 } else if (matches(opt, "-Version") == 0) {
 110                         printf("ip utility, iproute2-ss%s\n", SNAPSHOT);
 111                         exit(0);
 112                 } else if (matches(opt, "-help") == 0) {
 113                         usage();
 114                 } else {
 115                         fprintf(stderr, "Option \"%s\" is unknown, try \"ip -help\".\n", opt);
 116                         exit(-1);
 117                 }
 118                 argc--; argv++;
 119         }
 120
 121         _SL_ = oneline ? "\\" : "\n" ;
 122
 123         if (strcmp(basename, "ipaddr") == 0)
 124                 return do_ipaddr(argc-1, argv+1);
 125         if (strcmp(basename, "ipmaddr") == 0)
 126                 return do_multiaddr(argc-1, argv+1);
 127         if (strcmp(basename, "iproute") == 0)
 128                 return do_iproute(argc-1, argv+1);
 129         if (strcmp(basename, "iprule") == 0)
 130                 return do_iprule(argc-1, argv+1);
 131         if (strcmp(basename, "ipneigh") == 0)
 132                 return do_ipneigh(argc-1, argv+1);
 133         if (strcmp(basename, "iplink") == 0)
 134                 return do_iplink(argc-1, argv+1);
 135         if (strcmp(basename, "iptunnel") == 0)
 136                 return do_iptunnel(argc-1, argv+1);
 137         if (strcmp(basename, "ipmonitor") == 0)
 138                 return do_ipmonitor(argc-1, argv+1);
 139         if (strcmp(basename, "ipxfrm") == 0)
 140                 return do_xfrm(argc-1, argv+1);
 141
 142         if (argc > 1) {
 143                 if (matches(argv[1], "address") == 0)
 144                         return do_ipaddr(argc-2, argv+2);
 145                 if (matches(argv[1], "maddress") == 0)
 146                         return do_multiaddr(argc-2, argv+2);
 147                 if (matches(argv[1], "route") == 0)
 148                         return do_iproute(argc-2, argv+2);
 149                 if (matches(argv[1], "rule") == 0)
 150                         return do_iprule(argc-2, argv+2);
 151                 if (matches(argv[1], "mroute") == 0)
 152                         return do_multiroute(argc-2, argv+2);
 153                 if (matches(argv[1], "neighbor") == 0 ||
 154                     matches(argv[1], "neighbour") == 0)
 155                         return do_ipneigh(argc-2, argv+2);
 156                 if (matches(argv[1], "link") == 0)
 157                         return do_iplink(argc-2, argv+2);
 158                 if (matches(argv[1], "tunnel") == 0 ||
 159                     strcmp(argv[1], "tunl") == 0)
 160                         return do_iptunnel(argc-2, argv+2);
 161                 if (matches(argv[1], "monitor") == 0)
 162                         return do_ipmonitor(argc-2, argv+2);
 163                 if (matches(argv[1], "xfrm") == 0)
 164                         return do_xfrm(argc-2, argv+2);
 165                 if (matches(argv[1], "help") == 0)
 166                         usage();
 167                 fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv[1]);
 168                 exit(-1);
 169         }
 170         usage();
 171 }