[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 <net/if.h>
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| 30 | #include <net/if_arp.h>
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| 31 | #include <netinet/in.h>
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[1765] | 32 | #if defined(__GLIBC__) && __GLIBC__ >=2 && __GLIBC_MINOR__ >= 1
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[821] | 33 | #include <netpacket/packet.h>
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| 34 | #include <net/ethernet.h>
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| 35 | #else
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| 36 | #include <sys/types.h>
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| 37 | #include <netinet/if_ether.h>
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| 38 | #endif
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| 39 | #include "inet_common.h"
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[1765] | 40 | #include "libbb.h"
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[821] | 41 |
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[1765] | 42 | #if ENABLE_FEATURE_IFCONFIG_SLIP
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[821] | 43 | # include <net/if_slip.h>
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| 44 | #endif
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| 45 |
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| 46 | /* I don't know if this is needed for busybox or not. Anyone? */
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| 47 | #define QUESTIONABLE_ALIAS_CASE
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| 48 |
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| 49 |
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| 50 | /* Defines for glibc2.0 users. */
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| 51 | #ifndef SIOCSIFTXQLEN
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| 52 | # define SIOCSIFTXQLEN 0x8943
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| 53 | # define SIOCGIFTXQLEN 0x8942
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| 54 | #endif
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| 55 |
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| 56 | /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
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| 57 | #ifndef ifr_qlen
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| 58 | # define ifr_qlen ifr_ifru.ifru_mtu
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| 59 | #endif
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| 60 |
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| 61 | #ifndef IFF_DYNAMIC
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| 62 | # define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
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| 63 | #endif
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| 64 |
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[1765] | 65 | #if ENABLE_FEATURE_IPV6
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[821] | 66 | struct in6_ifreq {
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| 67 | struct in6_addr ifr6_addr;
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| 68 | uint32_t ifr6_prefixlen;
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| 69 | int ifr6_ifindex;
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| 70 | };
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| 71 | #endif
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| 72 |
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| 73 | /*
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| 74 | * Here are the bit masks for the "flags" member of struct options below.
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| 75 | * N_ signifies no arg prefix; M_ signifies arg prefixed by '-'.
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| 76 | * CLR clears the flag; SET sets the flag; ARG signifies (optional) arg.
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| 77 | */
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| 78 | #define N_CLR 0x01
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| 79 | #define M_CLR 0x02
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| 80 | #define N_SET 0x04
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| 81 | #define M_SET 0x08
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| 82 | #define N_ARG 0x10
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| 83 | #define M_ARG 0x20
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| 84 |
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| 85 | #define M_MASK (M_CLR | M_SET | M_ARG)
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| 86 | #define N_MASK (N_CLR | N_SET | N_ARG)
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| 87 | #define SET_MASK (N_SET | M_SET)
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| 88 | #define CLR_MASK (N_CLR | M_CLR)
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| 89 | #define SET_CLR_MASK (SET_MASK | CLR_MASK)
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| 90 | #define ARG_MASK (M_ARG | N_ARG)
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| 91 |
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| 92 | /*
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| 93 | * Here are the bit masks for the "arg_flags" member of struct options below.
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| 94 | */
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| 95 |
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| 96 | /*
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| 97 | * cast type:
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| 98 | * 00 int
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| 99 | * 01 char *
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| 100 | * 02 HOST_COPY in_ether
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| 101 | * 03 HOST_COPY INET_resolve
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| 102 | */
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| 103 | #define A_CAST_TYPE 0x03
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| 104 | /*
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| 105 | * map type:
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| 106 | * 00 not a map type (mem_start, io_addr, irq)
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| 107 | * 04 memstart (unsigned long)
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| 108 | * 08 io_addr (unsigned short)
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| 109 | * 0C irq (unsigned char)
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| 110 | */
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| 111 | #define A_MAP_TYPE 0x0C
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| 112 | #define A_ARG_REQ 0x10 /* Set if an arg is required. */
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| 113 | #define A_NETMASK 0x20 /* Set if netmask (check for multiple sets). */
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| 114 | #define A_SET_AFTER 0x40 /* Set a flag at the end. */
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| 115 | #define A_COLON_CHK 0x80 /* Is this needed? See below. */
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[1765] | 116 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
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[821] | 117 | #define A_HOSTNAME 0x100 /* Set if it is ip addr. */
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| 118 | #define A_BROADCAST 0x200 /* Set if it is broadcast addr. */
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| 119 | #else
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| 120 | #define A_HOSTNAME 0
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| 121 | #define A_BROADCAST 0
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| 122 | #endif
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| 123 |
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| 124 | /*
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| 125 | * These defines are for dealing with the A_CAST_TYPE field.
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| 126 | */
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| 127 | #define A_CAST_CHAR_PTR 0x01
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| 128 | #define A_CAST_RESOLVE 0x01
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| 129 | #define A_CAST_HOST_COPY 0x02
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| 130 | #define A_CAST_HOST_COPY_IN_ETHER A_CAST_HOST_COPY
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| 131 | #define A_CAST_HOST_COPY_RESOLVE (A_CAST_HOST_COPY | A_CAST_RESOLVE)
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| 132 |
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| 133 | /*
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| 134 | * These defines are for dealing with the A_MAP_TYPE field.
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| 135 | */
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| 136 | #define A_MAP_ULONG 0x04 /* memstart */
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| 137 | #define A_MAP_USHORT 0x08 /* io_addr */
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| 138 | #define A_MAP_UCHAR 0x0C /* irq */
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| 139 |
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| 140 | /*
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| 141 | * Define the bit masks signifying which operations to perform for each arg.
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| 142 | */
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| 143 |
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| 144 | #define ARG_METRIC (A_ARG_REQ /*| A_CAST_INT*/)
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| 145 | #define ARG_MTU (A_ARG_REQ /*| A_CAST_INT*/)
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| 146 | #define ARG_TXQUEUELEN (A_ARG_REQ /*| A_CAST_INT*/)
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| 147 | #define ARG_MEM_START (A_ARG_REQ | A_MAP_ULONG)
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| 148 | #define ARG_IO_ADDR (A_ARG_REQ | A_MAP_ULONG)
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| 149 | #define ARG_IRQ (A_ARG_REQ | A_MAP_UCHAR)
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| 150 | #define ARG_DSTADDR (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE)
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| 151 | #define ARG_NETMASK (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_NETMASK)
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| 152 | #define ARG_BROADCAST (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_BROADCAST)
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| 153 | #define ARG_HW (A_ARG_REQ | A_CAST_HOST_COPY_IN_ETHER)
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| 154 | #define ARG_POINTOPOINT (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
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| 155 | #define ARG_KEEPALIVE (A_ARG_REQ | A_CAST_CHAR_PTR)
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| 156 | #define ARG_OUTFILL (A_ARG_REQ | A_CAST_CHAR_PTR)
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| 157 | #define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK | A_HOSTNAME)
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| 158 | #define ARG_ADD_DEL (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
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| 159 |
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| 160 |
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| 161 | /*
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| 162 | * Set up the tables. Warning! They must have corresponding order!
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| 163 | */
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| 164 |
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| 165 | struct arg1opt {
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| 166 | const char *name;
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| 167 | int selector;
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| 168 | unsigned short ifr_offset;
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| 169 | };
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| 170 |
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| 171 | struct options {
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| 172 | const char *name;
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[1765] | 173 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
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[821] | 174 | const unsigned int flags:6;
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| 175 | const unsigned int arg_flags:10;
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| 176 | #else
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| 177 | const unsigned char flags;
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| 178 | const unsigned char arg_flags;
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| 179 | #endif
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| 180 | const unsigned short selector;
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| 181 | };
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| 182 |
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| 183 | #define ifreq_offsetof(x) offsetof(struct ifreq, x)
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| 184 |
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| 185 | static const struct arg1opt Arg1Opt[] = {
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| 186 | {"SIOCSIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric)},
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| 187 | {"SIOCSIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu)},
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| 188 | {"SIOCSIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen)},
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| 189 | {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
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| 190 | {"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)},
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| 191 | {"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)},
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[1765] | 192 | #if ENABLE_FEATURE_IFCONFIG_HW
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[821] | 193 | {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
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| 194 | #endif
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| 195 | {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
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| 196 | #ifdef SIOCSKEEPALIVE
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| 197 | {"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)},
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| 198 | #endif
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| 199 | #ifdef SIOCSOUTFILL
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| 200 | {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
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| 201 | #endif
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[1765] | 202 | #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
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[821] | 203 | {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)},
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| 204 | {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)},
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| 205 | {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)},
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| 206 | #endif
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| 207 | /* Last entry if for unmatched (possibly hostname) arg. */
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[1765] | 208 | #if ENABLE_FEATURE_IPV6
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[821] | 209 | {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
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| 210 | {"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
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| 211 | #endif
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| 212 | {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)},
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| 213 | };
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| 214 |
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| 215 | static const struct options OptArray[] = {
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| 216 | {"metric", N_ARG, ARG_METRIC, 0},
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| 217 | {"mtu", N_ARG, ARG_MTU, 0},
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| 218 | {"txqueuelen", N_ARG, ARG_TXQUEUELEN, 0},
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| 219 | {"dstaddr", N_ARG, ARG_DSTADDR, 0},
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| 220 | {"netmask", N_ARG, ARG_NETMASK, 0},
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| 221 | {"broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST},
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[1765] | 222 | #if ENABLE_FEATURE_IFCONFIG_HW
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[821] | 223 | {"hw", N_ARG, ARG_HW, 0},
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| 224 | #endif
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| 225 | {"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT},
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| 226 | #ifdef SIOCSKEEPALIVE
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| 227 | {"keepalive", N_ARG, ARG_KEEPALIVE, 0},
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| 228 | #endif
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| 229 | #ifdef SIOCSOUTFILL
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| 230 | {"outfill", N_ARG, ARG_OUTFILL, 0},
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| 231 | #endif
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[1765] | 232 | #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
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[821] | 233 | {"mem_start", N_ARG, ARG_MEM_START, 0},
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| 234 | {"io_addr", N_ARG, ARG_IO_ADDR, 0},
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| 235 | {"irq", N_ARG, ARG_IRQ, 0},
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| 236 | #endif
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[1765] | 237 | #if ENABLE_FEATURE_IPV6
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[821] | 238 | {"add", N_ARG, ARG_ADD_DEL, 0},
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| 239 | {"del", N_ARG, ARG_ADD_DEL, 0},
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| 240 | #endif
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| 241 | {"arp", N_CLR | M_SET, 0, IFF_NOARP},
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| 242 | {"trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS},
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| 243 | {"promisc", N_SET | M_CLR, 0, IFF_PROMISC},
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| 244 | {"multicast", N_SET | M_CLR, 0, IFF_MULTICAST},
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| 245 | {"allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI},
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| 246 | {"dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC},
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| 247 | {"up", N_SET, 0, (IFF_UP | IFF_RUNNING)},
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| 248 | {"down", N_CLR, 0, IFF_UP},
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| 249 | {NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING)}
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| 250 | };
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| 251 |
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| 252 | /*
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| 253 | * A couple of prototypes.
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| 254 | */
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| 255 |
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[1765] | 256 | #if ENABLE_FEATURE_IFCONFIG_HW
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| 257 | static int in_ether(const char *bufp, struct sockaddr *sap);
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[821] | 258 | #endif
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| 259 |
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| 260 | /*
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| 261 | * Our main function.
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| 262 | */
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| 263 |
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[1765] | 264 | int ifconfig_main(int argc, char **argv);
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[821] | 265 | int ifconfig_main(int argc, char **argv)
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| 266 | {
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| 267 | struct ifreq ifr;
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| 268 | struct sockaddr_in sai;
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[1765] | 269 | #if ENABLE_FEATURE_IFCONFIG_HW
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[821] | 270 | struct sockaddr sa;
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| 271 | #endif
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| 272 | const struct arg1opt *a1op;
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| 273 | const struct options *op;
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| 274 | int sockfd; /* socket fd we use to manipulate stuff with */
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| 275 | int selector;
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[1765] | 276 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
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[821] | 277 | unsigned int mask;
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| 278 | unsigned int did_flags;
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| 279 | unsigned int sai_hostname, sai_netmask;
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| 280 | #else
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| 281 | unsigned char mask;
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| 282 | unsigned char did_flags;
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| 283 | #endif
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| 284 | char *p;
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[1765] | 285 | /*char host[128];*/
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| 286 | const char *host = NULL; /* make gcc happy */
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[821] | 287 |
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| 288 | did_flags = 0;
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[1765] | 289 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
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[821] | 290 | sai_hostname = 0;
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| 291 | sai_netmask = 0;
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| 292 | #endif
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| 293 |
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| 294 | /* skip argv[0] */
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| 295 | ++argv;
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| 296 | --argc;
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| 297 |
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[1765] | 298 | #if ENABLE_FEATURE_IFCONFIG_STATUS
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| 299 | if (argc > 0 && (argv[0][0] == '-' && argv[0][1] == 'a' && !argv[0][2])) {
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[821] | 300 | interface_opt_a = 1;
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| 301 | --argc;
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| 302 | ++argv;
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| 303 | }
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| 304 | #endif
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| 305 |
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| 306 | if (argc <= 1) {
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[1765] | 307 | #if ENABLE_FEATURE_IFCONFIG_STATUS
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[821] | 308 | return display_interfaces(argc ? *argv : NULL);
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| 309 | #else
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[1765] | 310 | bb_error_msg_and_die("no support for status display");
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[821] | 311 | #endif
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| 312 | }
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| 313 |
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| 314 | /* Create a channel to the NET kernel. */
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[1765] | 315 | sockfd = xsocket(AF_INET, SOCK_DGRAM, 0);
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[821] | 316 |
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| 317 | /* get interface name */
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| 318 | safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
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| 319 |
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| 320 | /* Process the remaining arguments. */
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| 321 | while (*++argv != (char *) NULL) {
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| 322 | p = *argv;
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| 323 | mask = N_MASK;
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| 324 | if (*p == '-') { /* If the arg starts with '-'... */
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| 325 | ++p; /* advance past it and */
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| 326 | mask = M_MASK; /* set the appropriate mask. */
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| 327 | }
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| 328 | for (op = OptArray; op->name; op++) { /* Find table entry. */
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| 329 | if (strcmp(p, op->name) == 0) { /* If name matches... */
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[1765] | 330 | mask &= op->flags;
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| 331 | if (mask) /* set the mask and go. */
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[821] | 332 | goto FOUND_ARG;
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| 333 | /* If we get here, there was a valid arg with an */
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| 334 | /* invalid '-' prefix. */
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[1765] | 335 | bb_error_msg_and_die("bad: '%s'", p-1);
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[821] | 336 | }
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| 337 | }
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| 338 |
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| 339 | /* We fell through, so treat as possible hostname. */
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[1765] | 340 | a1op = Arg1Opt + ARRAY_SIZE(Arg1Opt) - 1;
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[821] | 341 | mask = op->arg_flags;
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| 342 | goto HOSTNAME;
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| 343 |
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[1765] | 344 | FOUND_ARG:
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[821] | 345 | if (mask & ARG_MASK) {
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| 346 | mask = op->arg_flags;
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| 347 | a1op = Arg1Opt + (op - OptArray);
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[1765] | 348 | if (mask & A_NETMASK & did_flags)
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[821] | 349 | bb_show_usage();
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| 350 | if (*++argv == NULL) {
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[1765] | 351 | if (mask & A_ARG_REQ)
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[821] | 352 | bb_show_usage();
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[1765] | 353 | --argv;
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| 354 | mask &= A_SET_AFTER; /* just for broadcast */
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[821] | 355 | } else { /* got an arg so process it */
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[1765] | 356 | HOSTNAME:
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[821] | 357 | did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
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| 358 | if (mask & A_CAST_HOST_COPY) {
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[1765] | 359 | #if ENABLE_FEATURE_IFCONFIG_HW
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[821] | 360 | if (mask & A_CAST_RESOLVE) {
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| 361 | #endif
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[1765] | 362 | #if ENABLE_FEATURE_IPV6
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[821] | 363 | char *prefix;
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| 364 | int prefix_len = 0;
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| 365 | #endif
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[1765] | 366 | /*safe_strncpy(host, *argv, (sizeof host));*/
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| 367 | host = *argv;
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| 368 | #if ENABLE_FEATURE_IPV6
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| 369 | prefix = strchr(host, '/');
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| 370 | if (prefix) {
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| 371 | prefix_len = xatou_range(prefix + 1, 0, 128);
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| 372 | *prefix = '\0';
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[821] | 373 | }
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| 374 | #endif
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| 375 | sai.sin_family = AF_INET;
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| 376 | sai.sin_port = 0;
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[1765] | 377 | if (!strcmp(host, bb_str_default)) {
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[821] | 378 | /* Default is special, meaning 0.0.0.0. */
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| 379 | sai.sin_addr.s_addr = INADDR_ANY;
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[1765] | 380 | }
|
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| 381 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
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| 382 | else if ((host[0] == '+' && !host[1]) && (mask & A_BROADCAST)
|
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| 383 | && (did_flags & (A_NETMASK|A_HOSTNAME)) == (A_NETMASK|A_HOSTNAME)
|
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| 384 | ) {
|
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[821] | 385 | /* + is special, meaning broadcast is derived. */
|
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| 386 | sai.sin_addr.s_addr = (~sai_netmask) | (sai_hostname & sai_netmask);
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[1765] | 387 | }
|
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[821] | 388 | #endif
|
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[1765] | 389 | else {
|
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| 390 | len_and_sockaddr *lsa;
|
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| 391 | if (strcmp(host, "inet") == 0)
|
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| 392 | continue; /* compat stuff */
|
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| 393 | lsa = xhost2sockaddr(host, 0);
|
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| 394 | #if ENABLE_FEATURE_IPV6
|
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| 395 | if (lsa->sa.sa_family == AF_INET6) {
|
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| 396 | int sockfd6;
|
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| 397 | struct in6_ifreq ifr6;
|
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[821] | 398 |
|
---|
[1765] | 399 | memcpy((char *) &ifr6.ifr6_addr,
|
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| 400 | (char *) &(lsa->sin6.sin6_addr),
|
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| 401 | sizeof(struct in6_addr));
|
---|
[821] | 402 |
|
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[1765] | 403 | /* Create a channel to the NET kernel. */
|
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| 404 | sockfd6 = xsocket(AF_INET6, SOCK_DGRAM, 0);
|
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| 405 | xioctl(sockfd6, SIOGIFINDEX, &ifr);
|
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| 406 | ifr6.ifr6_ifindex = ifr.ifr_ifindex;
|
---|
| 407 | ifr6.ifr6_prefixlen = prefix_len;
|
---|
| 408 | ioctl_or_perror_and_die(sockfd6, a1op->selector, &ifr6, "%s", a1op->name);
|
---|
| 409 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 410 | free(lsa);
|
---|
[821] | 411 | continue;
|
---|
| 412 | }
|
---|
| 413 | #endif
|
---|
[1765] | 414 | sai.sin_addr = lsa->sin.sin_addr;
|
---|
| 415 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 416 | free(lsa);
|
---|
[821] | 417 | }
|
---|
[1765] | 418 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
| 419 | if (mask & A_HOSTNAME)
|
---|
[821] | 420 | sai_hostname = sai.sin_addr.s_addr;
|
---|
[1765] | 421 | if (mask & A_NETMASK)
|
---|
[821] | 422 | sai_netmask = sai.sin_addr.s_addr;
|
---|
| 423 | #endif
|
---|
| 424 | p = (char *) &sai;
|
---|
[1765] | 425 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[821] | 426 | } else { /* A_CAST_HOST_COPY_IN_ETHER */
|
---|
| 427 | /* This is the "hw" arg case. */
|
---|
[1765] | 428 | if (strcmp("ether", *argv) || !*++argv)
|
---|
[821] | 429 | bb_show_usage();
|
---|
[1765] | 430 | /*safe_strncpy(host, *argv, sizeof(host));*/
|
---|
| 431 | host = *argv;
|
---|
| 432 | if (in_ether(host, &sa))
|
---|
| 433 | bb_error_msg_and_die("invalid hw-addr %s", host);
|
---|
[821] | 434 | p = (char *) &sa;
|
---|
| 435 | }
|
---|
| 436 | #endif
|
---|
[1765] | 437 | memcpy( (((char *)&ifr) + a1op->ifr_offset),
|
---|
[821] | 438 | p, sizeof(struct sockaddr));
|
---|
| 439 | } else {
|
---|
[1765] | 440 | /* FIXME: error check?? */
|
---|
[821] | 441 | unsigned long i = strtoul(*argv, NULL, 0);
|
---|
[1765] | 442 | p = ((char *)&ifr) + a1op->ifr_offset;
|
---|
| 443 | #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
---|
[821] | 444 | if (mask & A_MAP_TYPE) {
|
---|
[1765] | 445 | xioctl(sockfd, SIOCGIFMAP, &ifr);
|
---|
| 446 | if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR)
|
---|
[821] | 447 | *((unsigned char *) p) = i;
|
---|
[1765] | 448 | else if (mask & A_MAP_USHORT)
|
---|
[821] | 449 | *((unsigned short *) p) = i;
|
---|
[1765] | 450 | else
|
---|
[821] | 451 | *((unsigned long *) p) = i;
|
---|
| 452 | } else
|
---|
| 453 | #endif
|
---|
[1765] | 454 | if (mask & A_CAST_CHAR_PTR)
|
---|
[821] | 455 | *((caddr_t *) p) = (caddr_t) i;
|
---|
[1765] | 456 | else /* A_CAST_INT */
|
---|
[821] | 457 | *((int *) p) = i;
|
---|
| 458 | }
|
---|
| 459 |
|
---|
[1765] | 460 | ioctl_or_perror_and_die(sockfd, a1op->selector, &ifr, "%s", a1op->name);
|
---|
[821] | 461 | #ifdef QUESTIONABLE_ALIAS_CASE
|
---|
| 462 | if (mask & A_COLON_CHK) {
|
---|
| 463 | /*
|
---|
| 464 | * Don't do the set_flag() if the address is an alias with
|
---|
[1765] | 465 | * a '-' at the end, since it's deleted already! - Roman
|
---|
[821] | 466 | *
|
---|
| 467 | * Should really use regex.h here, not sure though how well
|
---|
| 468 | * it'll go with the cross-platform support etc.
|
---|
| 469 | */
|
---|
| 470 | char *ptr;
|
---|
| 471 | short int found_colon = 0;
|
---|
[1765] | 472 | for (ptr = ifr.ifr_name; *ptr; ptr++)
|
---|
| 473 | if (*ptr == ':')
|
---|
[821] | 474 | found_colon++;
|
---|
[1765] | 475 | if (found_colon && ptr[-1] == '-')
|
---|
[821] | 476 | continue;
|
---|
| 477 | }
|
---|
| 478 | #endif
|
---|
| 479 | }
|
---|
[1765] | 480 | if (!(mask & A_SET_AFTER))
|
---|
[821] | 481 | continue;
|
---|
| 482 | mask = N_SET;
|
---|
| 483 | }
|
---|
| 484 |
|
---|
[1765] | 485 | xioctl(sockfd, SIOCGIFFLAGS, &ifr);
|
---|
| 486 | selector = op->selector;
|
---|
| 487 | if (mask & SET_MASK)
|
---|
| 488 | ifr.ifr_flags |= selector;
|
---|
| 489 | else
|
---|
| 490 | ifr.ifr_flags &= ~selector;
|
---|
| 491 | xioctl(sockfd, SIOCSIFFLAGS, &ifr);
|
---|
| 492 | } /* while () */
|
---|
[821] | 493 |
|
---|
[1765] | 494 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 495 | close(sockfd);
|
---|
| 496 | return 0;
|
---|
[821] | 497 | }
|
---|
| 498 |
|
---|
[1765] | 499 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[821] | 500 | /* Input an Ethernet address and convert to binary. */
|
---|
[1765] | 501 | static int in_ether(const char *bufp, struct sockaddr *sap)
|
---|
[821] | 502 | {
|
---|
| 503 | char *ptr;
|
---|
| 504 | int i, j;
|
---|
| 505 | unsigned char val;
|
---|
| 506 | unsigned char c;
|
---|
| 507 |
|
---|
| 508 | sap->sa_family = ARPHRD_ETHER;
|
---|
| 509 | ptr = sap->sa_data;
|
---|
| 510 |
|
---|
| 511 | i = 0;
|
---|
| 512 | do {
|
---|
| 513 | j = val = 0;
|
---|
| 514 |
|
---|
| 515 | /* We might get a semicolon here - not required. */
|
---|
| 516 | if (i && (*bufp == ':')) {
|
---|
| 517 | bufp++;
|
---|
| 518 | }
|
---|
| 519 |
|
---|
| 520 | do {
|
---|
| 521 | c = *bufp;
|
---|
| 522 | if (((unsigned char)(c - '0')) <= 9) {
|
---|
| 523 | c -= '0';
|
---|
| 524 | } else if (((unsigned char)((c|0x20) - 'a')) <= 5) {
|
---|
| 525 | c = (c|0x20) - ('a'-10);
|
---|
| 526 | } else if (j && (c == ':' || c == 0)) {
|
---|
| 527 | break;
|
---|
| 528 | } else {
|
---|
| 529 | return -1;
|
---|
| 530 | }
|
---|
| 531 | ++bufp;
|
---|
| 532 | val <<= 4;
|
---|
| 533 | val += c;
|
---|
| 534 | } while (++j < 2);
|
---|
| 535 | *ptr++ = val;
|
---|
| 536 | } while (++i < ETH_ALEN);
|
---|
| 537 |
|
---|
[1765] | 538 | return *bufp; /* Error if we don't end at end of string. */
|
---|
[821] | 539 | }
|
---|
| 540 | #endif
|
---|