| 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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