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85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* ip.c "ip" utility frontend.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*
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*
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* Changes:
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*
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* Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
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*/
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#include "ip_common.h" /* #include "libbb.h" is inside */
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#include "utils.h"
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family_t preferred_family = AF_UNSPEC;
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smallint oneline;
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char _SL_;
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char **ip_parse_common_args(char **argv)
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{
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static const char ip_common_commands[] ALIGN1 =
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"oneline" "\0"
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"family" "\0"
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"4" "\0"
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"6" "\0"
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"0" "\0"
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;
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enum {
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ARG_oneline,
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ARG_family,
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ARG_IPv4,
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ARG_IPv6,
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ARG_packet,
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};
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static const family_t af_numbers[] = { AF_INET, AF_INET6, AF_PACKET };
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int arg;
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while (*argv) {
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char *opt = *argv;
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if (opt[0] != '-')
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break;
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opt++;
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if (opt[0] == '-') {
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opt++;
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if (!opt[0]) { /* "--" */
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argv++;
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break;
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}
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}
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arg = index_in_substrings(ip_common_commands, opt);
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if (arg < 0)
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bb_show_usage();
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if (arg == ARG_oneline) {
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oneline = 1;
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argv++;
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continue;
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}
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if (arg == ARG_family) {
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static const char families[] ALIGN1 =
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"inet" "\0" "inet6" "\0" "link" "\0";
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argv++;
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if (!*argv)
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bb_show_usage();
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arg = index_in_strings(families, *argv);
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if (arg < 0)
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invarg(*argv, "protocol family");
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/* now arg == 0, 1 or 2 */
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} else {
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arg -= ARG_IPv4;
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/* now arg == 0, 1 or 2 */
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}
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preferred_family = af_numbers[arg];
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argv++;
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}
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_SL_ = oneline ? '\\' : '\n';
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return argv;
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}
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