[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /* ifconfig
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| 3 | *
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| 4 | * Similar to the standard Unix ifconfig, but with only the necessary
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| 5 | * parts for AF_INET, and without any printing of if info (for now).
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| 6 | *
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| 7 | * Bjorn Wesen, Axis Communications AB
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| 8 | *
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| 9 | *
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| 10 | * Authors of the original ifconfig was:
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| 11 | * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
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| 12 | *
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| 13 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 14 | */
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| 15 |
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| 16 | /*
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| 17 | * Heavily modified by Manuel Novoa III Mar 6, 2001
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| 18 | *
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| 19 | * From initial port to busybox, removed most of the redundancy by
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| 20 | * converting to a table-driven approach. Added several (optional)
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| 21 | * args missing from initial port.
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| 22 | *
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| 23 | * Still missing: media, tunnel.
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| 24 | *
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| 25 | * 2002-04-20
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| 26 | * IPV6 support added by Bart Visscher <magick@linux-fan.com>
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| 27 | */
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| 28 |
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| 29 | #include <stdio.h>
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| 30 | #include <stdlib.h>
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| 31 | #include <string.h> /* strcmp and friends */
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| 32 | #include <ctype.h> /* isdigit and friends */
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| 33 | #include <stddef.h> /* offsetof */
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| 34 | #include <unistd.h>
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| 35 | #include <netdb.h>
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| 36 | #include <sys/ioctl.h>
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| 37 | #include <net/if.h>
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| 38 | #include <net/if_arp.h>
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| 39 | #include <netinet/in.h>
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| 40 | #if __GLIBC__ >=2 && __GLIBC_MINOR >= 1
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| 41 | #include <netpacket/packet.h>
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| 42 | #include <net/ethernet.h>
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| 43 | #else
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| 44 | #include <sys/types.h>
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| 45 | #include <netinet/if_ether.h>
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| 46 | #endif
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| 47 | #include "inet_common.h"
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| 48 | #include "busybox.h"
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| 49 |
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| 50 | #ifdef CONFIG_FEATURE_IFCONFIG_SLIP
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| 51 | # include <net/if_slip.h>
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| 52 | #endif
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| 53 |
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| 54 | /* I don't know if this is needed for busybox or not. Anyone? */
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| 55 | #define QUESTIONABLE_ALIAS_CASE
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| 56 |
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| 57 |
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| 58 | /* Defines for glibc2.0 users. */
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| 59 | #ifndef SIOCSIFTXQLEN
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| 60 | # define SIOCSIFTXQLEN 0x8943
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| 61 | # define SIOCGIFTXQLEN 0x8942
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| 62 | #endif
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| 63 |
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| 64 | /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
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| 65 | #ifndef ifr_qlen
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| 66 | # define ifr_qlen ifr_ifru.ifru_mtu
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| 67 | #endif
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| 68 |
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| 69 | #ifndef IFF_DYNAMIC
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| 70 | # define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
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| 71 | #endif
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| 72 |
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| 73 | #ifdef CONFIG_FEATURE_IPV6
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| 74 | struct in6_ifreq {
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| 75 | struct in6_addr ifr6_addr;
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| 76 | uint32_t ifr6_prefixlen;
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| 77 | int ifr6_ifindex;
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| 78 | };
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| 79 | #endif
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| 80 |
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| 81 | /*
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| 82 | * Here are the bit masks for the "flags" member of struct options below.
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| 83 | * N_ signifies no arg prefix; M_ signifies arg prefixed by '-'.
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| 84 | * CLR clears the flag; SET sets the flag; ARG signifies (optional) arg.
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| 85 | */
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| 86 | #define N_CLR 0x01
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| 87 | #define M_CLR 0x02
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| 88 | #define N_SET 0x04
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| 89 | #define M_SET 0x08
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| 90 | #define N_ARG 0x10
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| 91 | #define M_ARG 0x20
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| 92 |
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| 93 | #define M_MASK (M_CLR | M_SET | M_ARG)
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| 94 | #define N_MASK (N_CLR | N_SET | N_ARG)
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| 95 | #define SET_MASK (N_SET | M_SET)
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| 96 | #define CLR_MASK (N_CLR | M_CLR)
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| 97 | #define SET_CLR_MASK (SET_MASK | CLR_MASK)
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| 98 | #define ARG_MASK (M_ARG | N_ARG)
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| 99 |
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| 100 | /*
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| 101 | * Here are the bit masks for the "arg_flags" member of struct options below.
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| 102 | */
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| 103 |
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| 104 | /*
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| 105 | * cast type:
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| 106 | * 00 int
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| 107 | * 01 char *
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| 108 | * 02 HOST_COPY in_ether
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| 109 | * 03 HOST_COPY INET_resolve
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| 110 | */
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| 111 | #define A_CAST_TYPE 0x03
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| 112 | /*
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| 113 | * map type:
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| 114 | * 00 not a map type (mem_start, io_addr, irq)
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| 115 | * 04 memstart (unsigned long)
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| 116 | * 08 io_addr (unsigned short)
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| 117 | * 0C irq (unsigned char)
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| 118 | */
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| 119 | #define A_MAP_TYPE 0x0C
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| 120 | #define A_ARG_REQ 0x10 /* Set if an arg is required. */
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| 121 | #define A_NETMASK 0x20 /* Set if netmask (check for multiple sets). */
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| 122 | #define A_SET_AFTER 0x40 /* Set a flag at the end. */
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| 123 | #define A_COLON_CHK 0x80 /* Is this needed? See below. */
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| 124 | #ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
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| 125 | #define A_HOSTNAME 0x100 /* Set if it is ip addr. */
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| 126 | #define A_BROADCAST 0x200 /* Set if it is broadcast addr. */
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| 127 | #else
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| 128 | #define A_HOSTNAME 0
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| 129 | #define A_BROADCAST 0
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| 130 | #endif
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| 131 |
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| 132 | /*
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| 133 | * These defines are for dealing with the A_CAST_TYPE field.
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| 134 | */
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| 135 | #define A_CAST_CHAR_PTR 0x01
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| 136 | #define A_CAST_RESOLVE 0x01
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| 137 | #define A_CAST_HOST_COPY 0x02
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| 138 | #define A_CAST_HOST_COPY_IN_ETHER A_CAST_HOST_COPY
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| 139 | #define A_CAST_HOST_COPY_RESOLVE (A_CAST_HOST_COPY | A_CAST_RESOLVE)
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| 140 |
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| 141 | /*
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| 142 | * These defines are for dealing with the A_MAP_TYPE field.
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| 143 | */
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| 144 | #define A_MAP_ULONG 0x04 /* memstart */
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| 145 | #define A_MAP_USHORT 0x08 /* io_addr */
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| 146 | #define A_MAP_UCHAR 0x0C /* irq */
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| 147 |
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| 148 | /*
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| 149 | * Define the bit masks signifying which operations to perform for each arg.
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| 150 | */
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| 151 |
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| 152 | #define ARG_METRIC (A_ARG_REQ /*| A_CAST_INT*/)
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| 153 | #define ARG_MTU (A_ARG_REQ /*| A_CAST_INT*/)
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| 154 | #define ARG_TXQUEUELEN (A_ARG_REQ /*| A_CAST_INT*/)
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| 155 | #define ARG_MEM_START (A_ARG_REQ | A_MAP_ULONG)
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| 156 | #define ARG_IO_ADDR (A_ARG_REQ | A_MAP_ULONG)
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| 157 | #define ARG_IRQ (A_ARG_REQ | A_MAP_UCHAR)
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| 158 | #define ARG_DSTADDR (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE)
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| 159 | #define ARG_NETMASK (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_NETMASK)
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| 160 | #define ARG_BROADCAST (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_BROADCAST)
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| 161 | #define ARG_HW (A_ARG_REQ | A_CAST_HOST_COPY_IN_ETHER)
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| 162 | #define ARG_POINTOPOINT (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
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| 163 | #define ARG_KEEPALIVE (A_ARG_REQ | A_CAST_CHAR_PTR)
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| 164 | #define ARG_OUTFILL (A_ARG_REQ | A_CAST_CHAR_PTR)
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| 165 | #define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK | A_HOSTNAME)
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| 166 | #define ARG_ADD_DEL (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
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| 167 |
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| 168 |
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| 169 | /*
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| 170 | * Set up the tables. Warning! They must have corresponding order!
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| 171 | */
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| 172 |
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| 173 | struct arg1opt {
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| 174 | const char *name;
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| 175 | int selector;
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| 176 | unsigned short ifr_offset;
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| 177 | };
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| 178 |
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| 179 | struct options {
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| 180 | const char *name;
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| 181 | #ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
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| 182 | const unsigned int flags:6;
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| 183 | const unsigned int arg_flags:10;
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| 184 | #else
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| 185 | const unsigned char flags;
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| 186 | const unsigned char arg_flags;
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| 187 | #endif
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| 188 | const unsigned short selector;
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| 189 | };
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| 190 |
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| 191 | #define ifreq_offsetof(x) offsetof(struct ifreq, x)
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| 192 |
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| 193 | static const struct arg1opt Arg1Opt[] = {
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| 194 | {"SIOCSIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric)},
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| 195 | {"SIOCSIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu)},
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| 196 | {"SIOCSIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen)},
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| 197 | {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
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| 198 | {"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)},
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| 199 | {"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)},
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| 200 | #ifdef CONFIG_FEATURE_IFCONFIG_HW
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| 201 | {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
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| 202 | #endif
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| 203 | {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
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| 204 | #ifdef SIOCSKEEPALIVE
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| 205 | {"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)},
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| 206 | #endif
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| 207 | #ifdef SIOCSOUTFILL
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| 208 | {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
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| 209 | #endif
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| 210 | #ifdef CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
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| 211 | {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)},
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| 212 | {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)},
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| 213 | {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)},
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| 214 | #endif
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| 215 | /* Last entry if for unmatched (possibly hostname) arg. */
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| 216 | #ifdef CONFIG_FEATURE_IPV6
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| 217 | {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
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| 218 | {"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
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| 219 | #endif
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| 220 | {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)},
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| 221 | };
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| 222 |
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| 223 | static const struct options OptArray[] = {
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| 224 | {"metric", N_ARG, ARG_METRIC, 0},
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| 225 | {"mtu", N_ARG, ARG_MTU, 0},
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| 226 | {"txqueuelen", N_ARG, ARG_TXQUEUELEN, 0},
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| 227 | {"dstaddr", N_ARG, ARG_DSTADDR, 0},
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| 228 | {"netmask", N_ARG, ARG_NETMASK, 0},
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| 229 | {"broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST},
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| 230 | #ifdef CONFIG_FEATURE_IFCONFIG_HW
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| 231 | {"hw", N_ARG, ARG_HW, 0},
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| 232 | #endif
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| 233 | {"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT},
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| 234 | #ifdef SIOCSKEEPALIVE
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| 235 | {"keepalive", N_ARG, ARG_KEEPALIVE, 0},
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| 236 | #endif
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| 237 | #ifdef SIOCSOUTFILL
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| 238 | {"outfill", N_ARG, ARG_OUTFILL, 0},
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| 239 | #endif
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| 240 | #ifdef CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
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| 241 | {"mem_start", N_ARG, ARG_MEM_START, 0},
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| 242 | {"io_addr", N_ARG, ARG_IO_ADDR, 0},
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| 243 | {"irq", N_ARG, ARG_IRQ, 0},
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| 244 | #endif
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| 245 | #ifdef CONFIG_FEATURE_IPV6
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| 246 | {"add", N_ARG, ARG_ADD_DEL, 0},
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| 247 | {"del", N_ARG, ARG_ADD_DEL, 0},
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| 248 | #endif
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| 249 | {"arp", N_CLR | M_SET, 0, IFF_NOARP},
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| 250 | {"trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS},
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| 251 | {"promisc", N_SET | M_CLR, 0, IFF_PROMISC},
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| 252 | {"multicast", N_SET | M_CLR, 0, IFF_MULTICAST},
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| 253 | {"allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI},
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| 254 | {"dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC},
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| 255 | {"up", N_SET, 0, (IFF_UP | IFF_RUNNING)},
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| 256 | {"down", N_CLR, 0, IFF_UP},
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| 257 | {NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING)}
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| 258 | };
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| 259 |
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| 260 | /*
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| 261 | * A couple of prototypes.
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| 262 | */
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| 263 |
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| 264 | #ifdef CONFIG_FEATURE_IFCONFIG_HW
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| 265 | static int in_ether(char *bufp, struct sockaddr *sap);
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| 266 | #endif
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| 267 |
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| 268 | #ifdef CONFIG_FEATURE_IFCONFIG_STATUS
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| 269 | extern int interface_opt_a;
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| 270 | extern int display_interfaces(char *ifname);
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| 271 | #endif
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| 272 |
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| 273 | /*
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| 274 | * Our main function.
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| 275 | */
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| 276 |
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| 277 | int ifconfig_main(int argc, char **argv)
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| 278 | {
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| 279 | struct ifreq ifr;
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| 280 | struct sockaddr_in sai;
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| 281 | #ifdef CONFIG_FEATURE_IPV6
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| 282 | struct sockaddr_in6 sai6;
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| 283 | #endif
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| 284 | #ifdef CONFIG_FEATURE_IFCONFIG_HW
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| 285 | struct sockaddr sa;
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| 286 | #endif
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| 287 | const struct arg1opt *a1op;
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| 288 | const struct options *op;
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| 289 | int sockfd; /* socket fd we use to manipulate stuff with */
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| 290 | int goterr;
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| 291 | int selector;
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| 292 | #ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
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| 293 | unsigned int mask;
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| 294 | unsigned int did_flags;
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| 295 | unsigned int sai_hostname, sai_netmask;
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| 296 | #else
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| 297 | unsigned char mask;
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| 298 | unsigned char did_flags;
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| 299 | #endif
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| 300 | char *p;
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| 301 | char host[128];
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| 302 |
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| 303 | goterr = 0;
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| 304 | did_flags = 0;
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| 305 | #ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
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| 306 | sai_hostname = 0;
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| 307 | sai_netmask = 0;
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| 308 | #endif
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| 309 |
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| 310 | /* skip argv[0] */
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| 311 | ++argv;
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| 312 | --argc;
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| 313 |
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| 314 | #ifdef CONFIG_FEATURE_IFCONFIG_STATUS
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| 315 | if ((argc > 0) && (((*argv)[0] == '-') && ((*argv)[1] == 'a') && !(*argv)[2])) {
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| 316 | interface_opt_a = 1;
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| 317 | --argc;
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| 318 | ++argv;
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| 319 | }
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| 320 | #endif
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| 321 |
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| 322 | if (argc <= 1) {
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| 323 | #ifdef CONFIG_FEATURE_IFCONFIG_STATUS
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| 324 | return display_interfaces(argc ? *argv : NULL);
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| 325 | #else
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| 326 | bb_error_msg_and_die
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| 327 | ("ifconfig was not compiled with interface status display support.");
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| 328 | #endif
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| 329 | }
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| 330 |
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| 331 | /* Create a channel to the NET kernel. */
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| 332 | sockfd = bb_xsocket(AF_INET, SOCK_DGRAM, 0);
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| 333 |
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| 334 | /* get interface name */
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| 335 | safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
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| 336 |
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| 337 | /* Process the remaining arguments. */
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| 338 | while (*++argv != (char *) NULL) {
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| 339 | p = *argv;
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| 340 | mask = N_MASK;
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| 341 | if (*p == '-') { /* If the arg starts with '-'... */
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| 342 | ++p; /* advance past it and */
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| 343 | mask = M_MASK; /* set the appropriate mask. */
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| 344 | }
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| 345 | for (op = OptArray; op->name; op++) { /* Find table entry. */
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| 346 | if (strcmp(p, op->name) == 0) { /* If name matches... */
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| 347 | if ((mask &= op->flags)) { /* set the mask and go. */
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| 348 | goto FOUND_ARG;
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| 349 | }
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| 350 | /* If we get here, there was a valid arg with an */
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| 351 | /* invalid '-' prefix. */
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| 352 | ++goterr;
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| 353 | goto LOOP;
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| 354 | }
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| 355 | }
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| 356 |
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| 357 | /* We fell through, so treat as possible hostname. */
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| 358 | a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1;
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| 359 | mask = op->arg_flags;
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| 360 | goto HOSTNAME;
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| 361 |
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| 362 | FOUND_ARG:
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| 363 | if (mask & ARG_MASK) {
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| 364 | mask = op->arg_flags;
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| 365 | a1op = Arg1Opt + (op - OptArray);
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| 366 | if (mask & A_NETMASK & did_flags) {
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| 367 | bb_show_usage();
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| 368 | }
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| 369 | if (*++argv == NULL) {
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| 370 | if (mask & A_ARG_REQ) {
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| 371 | bb_show_usage();
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| 372 | } else {
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| 373 | --argv;
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| 374 | mask &= A_SET_AFTER; /* just for broadcast */
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| 375 | }
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| 376 | } else { /* got an arg so process it */
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| 377 | HOSTNAME:
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| 378 | did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
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| 379 | if (mask & A_CAST_HOST_COPY) {
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| 380 | #ifdef CONFIG_FEATURE_IFCONFIG_HW
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| 381 | if (mask & A_CAST_RESOLVE) {
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| 382 | #endif
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| 383 | #ifdef CONFIG_FEATURE_IPV6
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| 384 | char *prefix;
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| 385 | int prefix_len = 0;
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| 386 | #endif
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| 387 |
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| 388 | safe_strncpy(host, *argv, (sizeof host));
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| 389 | #ifdef CONFIG_FEATURE_IPV6
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| 390 | if ((prefix = strchr(host, '/'))) {
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| 391 | if (safe_strtoi(prefix + 1, &prefix_len) ||
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| 392 | (prefix_len < 0) || (prefix_len > 128))
|
---|
| 393 | {
|
---|
| 394 | ++goterr;
|
---|
| 395 | goto LOOP;
|
---|
| 396 | }
|
---|
| 397 | *prefix = 0;
|
---|
| 398 | }
|
---|
| 399 | #endif
|
---|
| 400 |
|
---|
| 401 | sai.sin_family = AF_INET;
|
---|
| 402 | sai.sin_port = 0;
|
---|
| 403 | if (!strcmp(host, bb_INET_default)) {
|
---|
| 404 | /* Default is special, meaning 0.0.0.0. */
|
---|
| 405 | sai.sin_addr.s_addr = INADDR_ANY;
|
---|
| 406 | #ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
| 407 | } else if (((host[0] == '+') && !host[1]) && (mask & A_BROADCAST) &&
|
---|
| 408 | (did_flags & (A_NETMASK|A_HOSTNAME)) == (A_NETMASK|A_HOSTNAME)) {
|
---|
| 409 | /* + is special, meaning broadcast is derived. */
|
---|
| 410 | sai.sin_addr.s_addr = (~sai_netmask) | (sai_hostname & sai_netmask);
|
---|
| 411 | #endif
|
---|
| 412 | #ifdef CONFIG_FEATURE_IPV6
|
---|
| 413 | } else if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) {
|
---|
| 414 | int sockfd6;
|
---|
| 415 | struct in6_ifreq ifr6;
|
---|
| 416 |
|
---|
| 417 | memcpy((char *) &ifr6.ifr6_addr,
|
---|
| 418 | (char *) &sai6.sin6_addr,
|
---|
| 419 | sizeof(struct in6_addr));
|
---|
| 420 |
|
---|
| 421 | /* Create a channel to the NET kernel. */
|
---|
| 422 | if ((sockfd6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
|
---|
| 423 | bb_perror_msg_and_die("socket6");
|
---|
| 424 | }
|
---|
| 425 | if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0) {
|
---|
| 426 | perror("SIOGIFINDEX");
|
---|
| 427 | ++goterr;
|
---|
| 428 | continue;
|
---|
| 429 | }
|
---|
| 430 | ifr6.ifr6_ifindex = ifr.ifr_ifindex;
|
---|
| 431 | ifr6.ifr6_prefixlen = prefix_len;
|
---|
| 432 | if (ioctl(sockfd6, a1op->selector, &ifr6) < 0) {
|
---|
| 433 | perror(a1op->name);
|
---|
| 434 | ++goterr;
|
---|
| 435 | }
|
---|
| 436 | continue;
|
---|
| 437 | #endif
|
---|
| 438 | } else if (inet_aton(host, &sai.sin_addr) == 0) {
|
---|
| 439 | /* It's not a dotted quad. */
|
---|
| 440 | struct hostent *hp;
|
---|
| 441 | if ((hp = gethostbyname(host)) == (struct hostent *)NULL) {
|
---|
| 442 | ++goterr;
|
---|
| 443 | continue;
|
---|
| 444 | }
|
---|
| 445 | memcpy((char *) &sai.sin_addr, (char *) hp->h_addr_list[0],
|
---|
| 446 | sizeof(struct in_addr));
|
---|
| 447 | }
|
---|
| 448 | #ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
| 449 | if (mask & A_HOSTNAME) {
|
---|
| 450 | sai_hostname = sai.sin_addr.s_addr;
|
---|
| 451 | }
|
---|
| 452 | if (mask & A_NETMASK) {
|
---|
| 453 | sai_netmask = sai.sin_addr.s_addr;
|
---|
| 454 | }
|
---|
| 455 | #endif
|
---|
| 456 | p = (char *) &sai;
|
---|
| 457 | #ifdef CONFIG_FEATURE_IFCONFIG_HW
|
---|
| 458 | } else { /* A_CAST_HOST_COPY_IN_ETHER */
|
---|
| 459 | /* This is the "hw" arg case. */
|
---|
| 460 | if (strcmp("ether", *argv) || (*++argv == NULL)) {
|
---|
| 461 | bb_show_usage();
|
---|
| 462 | }
|
---|
| 463 | safe_strncpy(host, *argv, (sizeof host));
|
---|
| 464 | if (in_ether(host, &sa)) {
|
---|
| 465 | bb_error_msg("invalid hw-addr %s", host);
|
---|
| 466 | ++goterr;
|
---|
| 467 | continue;
|
---|
| 468 | }
|
---|
| 469 | p = (char *) &sa;
|
---|
| 470 | }
|
---|
| 471 | #endif
|
---|
| 472 | memcpy((((char *) (&ifr)) + a1op->ifr_offset),
|
---|
| 473 | p, sizeof(struct sockaddr));
|
---|
| 474 | } else {
|
---|
| 475 | unsigned long i = strtoul(*argv, NULL, 0);
|
---|
| 476 |
|
---|
| 477 | p = ((char *) (&ifr)) + a1op->ifr_offset;
|
---|
| 478 | #ifdef CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
---|
| 479 | if (mask & A_MAP_TYPE) {
|
---|
| 480 | if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) {
|
---|
| 481 | ++goterr;
|
---|
| 482 | continue;
|
---|
| 483 | }
|
---|
| 484 | if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR) {
|
---|
| 485 | *((unsigned char *) p) = i;
|
---|
| 486 | } else if (mask & A_MAP_USHORT) {
|
---|
| 487 | *((unsigned short *) p) = i;
|
---|
| 488 | } else {
|
---|
| 489 | *((unsigned long *) p) = i;
|
---|
| 490 | }
|
---|
| 491 | } else
|
---|
| 492 | #endif
|
---|
| 493 | if (mask & A_CAST_CHAR_PTR) {
|
---|
| 494 | *((caddr_t *) p) = (caddr_t) i;
|
---|
| 495 | } else { /* A_CAST_INT */
|
---|
| 496 | *((int *) p) = i;
|
---|
| 497 | }
|
---|
| 498 | }
|
---|
| 499 |
|
---|
| 500 | if (ioctl(sockfd, a1op->selector, &ifr) < 0) {
|
---|
| 501 | perror(a1op->name);
|
---|
| 502 | ++goterr;
|
---|
| 503 | continue;
|
---|
| 504 | }
|
---|
| 505 | #ifdef QUESTIONABLE_ALIAS_CASE
|
---|
| 506 | if (mask & A_COLON_CHK) {
|
---|
| 507 | /*
|
---|
| 508 | * Don't do the set_flag() if the address is an alias with
|
---|
| 509 | * a - at the end, since it's deleted already! - Roman
|
---|
| 510 | *
|
---|
| 511 | * Should really use regex.h here, not sure though how well
|
---|
| 512 | * it'll go with the cross-platform support etc.
|
---|
| 513 | */
|
---|
| 514 | char *ptr;
|
---|
| 515 | short int found_colon = 0;
|
---|
| 516 |
|
---|
| 517 | for (ptr = ifr.ifr_name; *ptr; ptr++) {
|
---|
| 518 | if (*ptr == ':') {
|
---|
| 519 | found_colon++;
|
---|
| 520 | }
|
---|
| 521 | }
|
---|
| 522 |
|
---|
| 523 | if (found_colon && *(ptr - 1) == '-') {
|
---|
| 524 | continue;
|
---|
| 525 | }
|
---|
| 526 | }
|
---|
| 527 | #endif
|
---|
| 528 | }
|
---|
| 529 | if (!(mask & A_SET_AFTER)) {
|
---|
| 530 | continue;
|
---|
| 531 | }
|
---|
| 532 | mask = N_SET;
|
---|
| 533 | }
|
---|
| 534 |
|
---|
| 535 | if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
|
---|
| 536 | perror("SIOCGIFFLAGS");
|
---|
| 537 | ++goterr;
|
---|
| 538 | } else {
|
---|
| 539 | selector = op->selector;
|
---|
| 540 | if (mask & SET_MASK) {
|
---|
| 541 | ifr.ifr_flags |= selector;
|
---|
| 542 | } else {
|
---|
| 543 | ifr.ifr_flags &= ~selector;
|
---|
| 544 | }
|
---|
| 545 | if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
|
---|
| 546 | perror("SIOCSIFFLAGS");
|
---|
| 547 | ++goterr;
|
---|
| 548 | }
|
---|
| 549 | }
|
---|
| 550 | LOOP:
|
---|
| 551 | continue;
|
---|
| 552 | } /* end of while-loop */
|
---|
| 553 |
|
---|
| 554 | if (ENABLE_FEATURE_CLEAN_UP) close(sockfd);
|
---|
| 555 | return goterr;
|
---|
| 556 | }
|
---|
| 557 |
|
---|
| 558 | #ifdef CONFIG_FEATURE_IFCONFIG_HW
|
---|
| 559 | /* Input an Ethernet address and convert to binary. */
|
---|
| 560 | static int in_ether(char *bufp, struct sockaddr *sap)
|
---|
| 561 | {
|
---|
| 562 | char *ptr;
|
---|
| 563 | int i, j;
|
---|
| 564 | unsigned char val;
|
---|
| 565 | unsigned char c;
|
---|
| 566 |
|
---|
| 567 | sap->sa_family = ARPHRD_ETHER;
|
---|
| 568 | ptr = sap->sa_data;
|
---|
| 569 |
|
---|
| 570 | i = 0;
|
---|
| 571 | do {
|
---|
| 572 | j = val = 0;
|
---|
| 573 |
|
---|
| 574 | /* We might get a semicolon here - not required. */
|
---|
| 575 | if (i && (*bufp == ':')) {
|
---|
| 576 | bufp++;
|
---|
| 577 | }
|
---|
| 578 |
|
---|
| 579 | do {
|
---|
| 580 | c = *bufp;
|
---|
| 581 | if (((unsigned char)(c - '0')) <= 9) {
|
---|
| 582 | c -= '0';
|
---|
| 583 | } else if (((unsigned char)((c|0x20) - 'a')) <= 5) {
|
---|
| 584 | c = (c|0x20) - ('a'-10);
|
---|
| 585 | } else if (j && (c == ':' || c == 0)) {
|
---|
| 586 | break;
|
---|
| 587 | } else {
|
---|
| 588 | return -1;
|
---|
| 589 | }
|
---|
| 590 | ++bufp;
|
---|
| 591 | val <<= 4;
|
---|
| 592 | val += c;
|
---|
| 593 | } while (++j < 2);
|
---|
| 594 | *ptr++ = val;
|
---|
| 595 | } while (++i < ETH_ALEN);
|
---|
| 596 |
|
---|
| 597 | return (int) (*bufp); /* Error if we don't end at end of string. */
|
---|
| 598 | }
|
---|
| 599 | #endif
|
---|