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