| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * ip.c "ip" utility frontend.
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU General Public License
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| 7 | * as published by the Free Software Foundation; either version
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| 8 | * 2 of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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| 11 | *
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| 12 | *
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| 13 | * Changes:
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| 14 | *
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| 15 | * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
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| 16 | */
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| 17 |
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| 18 | #include "ip_common.h" /* #include "libbb.h" is inside */
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| 19 | #include "utils.h"
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| 20 |
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| 21 | int preferred_family = AF_UNSPEC;
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| 22 | smallint oneline;
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| 23 | char _SL_;
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| 24 |
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| 25 | void ip_parse_common_args(int *argcp, char ***argvp)
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| 26 | {
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| 27 | int argc = *argcp;
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| 28 | char **argv = *argvp;
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| 29 | static const char ip_common_commands[] ALIGN1 =
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| 30 | "-family\0""inet\0""inet6\0""link\0"
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| 31 | "-4\0""-6\0""-0\0""-oneline\0";
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| 32 | enum {
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| 33 | ARG_family = 1,
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| 34 | ARG_inet,
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| 35 | ARG_inet6,
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| 36 | ARG_link,
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| 37 | ARG_IPv4,
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| 38 | ARG_IPv6,
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| 39 | ARG_packet,
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| 40 | ARG_oneline
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| 41 | };
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| 42 | smalluint arg;
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| 43 |
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| 44 | while (argc > 1) {
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| 45 | char *opt = argv[1];
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| 46 |
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| 47 | if (strcmp(opt,"--") == 0) {
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| 48 | argc--;
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| 49 | argv++;
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| 50 | break;
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| 51 | }
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| 52 | if (opt[0] != '-')
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| 53 | break;
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| 54 | if (opt[1] == '-')
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| 55 | opt++;
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| 56 | arg = index_in_strings(ip_common_commands, opt) + 1;
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| 57 | if (arg == ARG_family) {
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| 58 | argc--;
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| 59 | argv++;
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| 60 | if (!argv[1])
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| 61 | bb_show_usage();
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| 62 | arg = index_in_strings(ip_common_commands, argv[1]) + 1;
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| 63 | if (arg == ARG_inet)
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| 64 | preferred_family = AF_INET;
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| 65 | else if (arg == ARG_inet6)
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| 66 | preferred_family = AF_INET6;
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| 67 | else if (arg == ARG_link)
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| 68 | preferred_family = AF_PACKET;
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| 69 | else
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| 70 | invarg(argv[1], "protocol family");
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| 71 | } else if (arg == ARG_IPv4) {
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| 72 | preferred_family = AF_INET;
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| 73 | } else if (arg == ARG_IPv6) {
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| 74 | preferred_family = AF_INET6;
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| 75 | } else if (arg == ARG_packet) {
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| 76 | preferred_family = AF_PACKET;
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| 77 | } else if (arg == ARG_oneline) {
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| 78 | ++oneline;
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| 79 | } else {
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| 80 | bb_show_usage();
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| 81 | }
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| 82 | argc--;
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| 83 | argv++;
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| 84 | }
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| 85 | _SL_ = oneline ? '\\' : '\n';
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| 86 | *argcp = argc;
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| 87 | *argvp = argv;
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| 88 | }
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