busybox/networking/libiproute/ip_parse_common_args.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 <string.h>
  18
  19 #include "utils.h"
  20 #include "ip_common.h"
  21
  22 #include "busybox.h"
  23
  24 int preferred_family = AF_UNSPEC;
  25 int oneline = 0;
  26 char * _SL_ = NULL;
  27
  28 void ip_parse_common_args(int *argcp, char ***argvp)
  29 {
  30         int argc = *argcp;
  31         char **argv = *argvp;
  32
  33         while (argc > 1) {
  34                 char *opt = argv[1];
  35
  36                 if (strcmp(opt,"--") == 0) {
  37                         argc--; argv++;
  38                         break;
  39                 }
  40
  41                 if (opt[0] != '-')
  42                         break;
  43
  44                 if (opt[1] == '-')
  45                         opt++;
  46
  47                 if (matches(opt, "-family") == 0) {
  48                         argc--;
  49                         argv++;
  50                         if (! argv[1])
  51                             bb_show_usage();
  52                         if (strcmp(argv[1], "inet") == 0)
  53                                 preferred_family = AF_INET;
  54                         else if (strcmp(argv[1], "inet6") == 0)
  55                                 preferred_family = AF_INET6;
  56                         else if (strcmp(argv[1], "link") == 0)
  57                                 preferred_family = AF_PACKET;
  58                         else
  59                                 invarg(argv[1], "invalid protocol family");
  60                 } else if (strcmp(opt, "-4") == 0) {
  61                         preferred_family = AF_INET;
  62                 } else if (strcmp(opt, "-6") == 0) {
  63                         preferred_family = AF_INET6;
  64                 } else if (strcmp(opt, "-0") == 0) {
  65                         preferred_family = AF_PACKET;
  66                 } else if (matches(opt, "-oneline") == 0) {
  67                         ++oneline;
  68                 } else {
  69                         bb_show_usage();
  70                 }
  71                 argc--; argv++;
  72         }
  73         _SL_ = oneline ? "\\" : "\n" ;
  74         *argcp = argc;
  75         *argvp = argv;
  76 }