networking/libiproute/ip_parse_common_args.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * ip.c         "ip" utility frontend.
   4  *
   5  *              This program is free software; you can redistribute it and/or
   6  *              modify it under the terms of the GNU General Public License
   7  *              as published by the Free Software Foundation; either version
   8  *              2 of the License, or (at your option) any later version.
   9  *
  10  * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  11  *
  12  *
  13  * Changes:
  14  *
  15  * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
  16  */
  17
  18 #include <string.h>
  19
  20 #include "libbb.h"
  21 #include "utils.h"
  22 #include "ip_common.h"
  23
  24
  25 int preferred_family = AF_UNSPEC;
  26 int oneline = 0;
  27 char * _SL_ = NULL;
  28
  29 void ip_parse_common_args(int *argcp, char ***argvp)
  30 {
  31         int argc = *argcp;
  32         char **argv = *argvp;
  33
  34         while (argc > 1) {
  35                 char *opt = argv[1];
  36
  37                 if (strcmp(opt,"--") == 0) {
  38                         argc--;
  39                         argv++;
  40                         break;
  41                 }
  42
  43                 if (opt[0] != '-')
  44                         break;
  45
  46                 if (opt[1] == '-')
  47                         opt++;
  48
  49                 if (matches(opt, "-family") == 0) {
  50                         argc--;
  51                         argv++;
  52                         if (!argv[1])
  53                                 bb_show_usage();
  54                         if (strcmp(argv[1], "inet") == 0)
  55                                 preferred_family = AF_INET;
  56                         else if (strcmp(argv[1], "inet6") == 0)
  57                                 preferred_family = AF_INET6;
  58                         else if (strcmp(argv[1], "link") == 0)
  59                                 preferred_family = AF_PACKET;
  60                         else
  61                                 invarg(argv[1], "protocol family");
  62                 } else if (strcmp(opt, "-4") == 0) {
  63                         preferred_family = AF_INET;
  64                 } else if (strcmp(opt, "-6") == 0) {
  65                         preferred_family = AF_INET6;
  66                 } else if (strcmp(opt, "-0") == 0) {
  67                         preferred_family = AF_PACKET;
  68                 } else if (matches(opt, "-oneline") == 0) {
  69                         ++oneline;
  70                 } else {
  71                         bb_show_usage();
  72                 }
  73                 argc--;
  74                 argv++;
  75         }
  76         _SL_ = oneline ? "\\" : "\n" ;
  77         *argcp = argc;
  78         *argvp = argv;
  79 }