1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * This program is free software; you can redistribute it and/or
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4 | * modify it under the terms of the GNU General Public License
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5 | * as published by the Free Software Foundation; either version
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6 | * 2 of the License, or (at your option) any later version.
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7 | *
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8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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9 | *
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10 | * Changes:
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11 | *
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12 | * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
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13 | */
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14 |
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15 | #include "ip_common.h" /* #include "libbb.h" is inside */
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16 | #include "utils.h"
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17 |
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18 | family_t preferred_family = AF_UNSPEC;
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19 | smallint oneline;
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20 | char _SL_;
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21 |
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22 | char** FAST_FUNC ip_parse_common_args(char **argv)
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23 | {
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24 | static const char ip_common_commands[] ALIGN1 =
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25 | "oneline" "\0"
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26 | "family" "\0"
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27 | "4" "\0"
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28 | "6" "\0"
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29 | "0" "\0"
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30 | ;
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31 | enum {
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32 | ARG_oneline,
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33 | ARG_family,
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34 | ARG_IPv4,
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35 | ARG_IPv6,
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36 | ARG_packet,
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37 | };
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38 | static const family_t af_numbers[] = { AF_INET, AF_INET6, AF_PACKET };
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39 | int arg;
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40 |
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41 | while (*argv) {
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42 | char *opt = *argv;
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43 |
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44 | if (opt[0] != '-')
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45 | break;
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46 | opt++;
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47 | if (opt[0] == '-') {
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48 | opt++;
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49 | if (!opt[0]) { /* "--" */
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50 | argv++;
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51 | break;
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52 | }
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53 | }
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54 | arg = index_in_substrings(ip_common_commands, opt);
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55 | if (arg < 0)
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56 | bb_show_usage();
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57 | if (arg == ARG_oneline) {
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58 | oneline = 1;
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59 | argv++;
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60 | continue;
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61 | }
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62 | if (arg == ARG_family) {
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63 | static const char families[] ALIGN1 =
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64 | "inet" "\0" "inet6" "\0" "link" "\0";
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65 | argv++;
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66 | if (!*argv)
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67 | bb_show_usage();
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68 | arg = index_in_strings(families, *argv);
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69 | if (arg < 0)
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70 | invarg(*argv, "protocol family");
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71 | /* now arg == 0, 1 or 2 */
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72 | } else {
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73 | arg -= ARG_IPv4;
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74 | /* now arg == 0, 1 or 2 */
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75 | }
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76 | preferred_family = af_numbers[arg];
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77 | argv++;
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78 | }
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79 | _SL_ = oneline ? '\\' : '\n';
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80 | return argv;
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81 | }
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