[821] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /* ifconfig
|
---|
| 3 | *
|
---|
| 4 | * Similar to the standard Unix ifconfig, but with only the necessary
|
---|
| 5 | * parts for AF_INET, and without any printing of if info (for now).
|
---|
| 6 | *
|
---|
| 7 | * Bjorn Wesen, Axis Communications AB
|
---|
| 8 | *
|
---|
| 9 | *
|
---|
| 10 | * Authors of the original ifconfig was:
|
---|
| 11 | * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
|
---|
| 12 | *
|
---|
[2725] | 13 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
[821] | 14 | */
|
---|
| 15 |
|
---|
| 16 | /*
|
---|
| 17 | * Heavily modified by Manuel Novoa III Mar 6, 2001
|
---|
| 18 | *
|
---|
| 19 | * From initial port to busybox, removed most of the redundancy by
|
---|
| 20 | * converting to a table-driven approach. Added several (optional)
|
---|
| 21 | * args missing from initial port.
|
---|
| 22 | *
|
---|
| 23 | * Still missing: media, tunnel.
|
---|
| 24 | *
|
---|
| 25 | * 2002-04-20
|
---|
| 26 | * IPV6 support added by Bart Visscher <magick@linux-fan.com>
|
---|
| 27 | */
|
---|
| 28 |
|
---|
[3232] | 29 | //usage:#define ifconfig_trivial_usage
|
---|
| 30 | //usage: IF_FEATURE_IFCONFIG_STATUS("[-a]") " interface [address]"
|
---|
| 31 | //usage:#define ifconfig_full_usage "\n\n"
|
---|
| 32 | //usage: "Configure a network interface\n"
|
---|
| 33 | //usage: "\n"
|
---|
| 34 | //usage: IF_FEATURE_IPV6(
|
---|
| 35 | //usage: " [add ADDRESS[/PREFIXLEN]]\n")
|
---|
| 36 | //usage: IF_FEATURE_IPV6(
|
---|
| 37 | //usage: " [del ADDRESS[/PREFIXLEN]]\n")
|
---|
| 38 | //usage: " [[-]broadcast [ADDRESS]] [[-]pointopoint [ADDRESS]]\n"
|
---|
| 39 | //usage: " [netmask ADDRESS] [dstaddr ADDRESS]\n"
|
---|
| 40 | //usage: IF_FEATURE_IFCONFIG_SLIP(
|
---|
| 41 | //usage: " [outfill NN] [keepalive NN]\n")
|
---|
| 42 | //usage: " " IF_FEATURE_IFCONFIG_HW("[hw ether" IF_FEATURE_HWIB("|infiniband")" ADDRESS] ") "[metric NN] [mtu NN]\n"
|
---|
| 43 | //usage: " [[-]trailers] [[-]arp] [[-]allmulti]\n"
|
---|
| 44 | //usage: " [multicast] [[-]promisc] [txqueuelen NN] [[-]dynamic]\n"
|
---|
| 45 | //usage: IF_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ(
|
---|
| 46 | //usage: " [mem_start NN] [io_addr NN] [irq NN]\n")
|
---|
| 47 | //usage: " [up|down] ..."
|
---|
| 48 |
|
---|
| 49 | #include "libbb.h"
|
---|
| 50 | #include "inet_common.h"
|
---|
[821] | 51 | #include <net/if.h>
|
---|
| 52 | #include <net/if_arp.h>
|
---|
| 53 | #include <netinet/in.h>
|
---|
[3232] | 54 | #ifdef HAVE_NET_ETHERNET_H
|
---|
| 55 | # include <net/ethernet.h>
|
---|
[821] | 56 | #endif
|
---|
| 57 |
|
---|
[1765] | 58 | #if ENABLE_FEATURE_IFCONFIG_SLIP
|
---|
[821] | 59 | # include <net/if_slip.h>
|
---|
| 60 | #endif
|
---|
| 61 |
|
---|
| 62 | /* I don't know if this is needed for busybox or not. Anyone? */
|
---|
| 63 | #define QUESTIONABLE_ALIAS_CASE
|
---|
| 64 |
|
---|
| 65 |
|
---|
| 66 | /* Defines for glibc2.0 users. */
|
---|
| 67 | #ifndef SIOCSIFTXQLEN
|
---|
| 68 | # define SIOCSIFTXQLEN 0x8943
|
---|
| 69 | # define SIOCGIFTXQLEN 0x8942
|
---|
| 70 | #endif
|
---|
| 71 |
|
---|
| 72 | /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
|
---|
| 73 | #ifndef ifr_qlen
|
---|
| 74 | # define ifr_qlen ifr_ifru.ifru_mtu
|
---|
| 75 | #endif
|
---|
| 76 |
|
---|
| 77 | #ifndef IFF_DYNAMIC
|
---|
| 78 | # define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
|
---|
| 79 | #endif
|
---|
| 80 |
|
---|
[1765] | 81 | #if ENABLE_FEATURE_IPV6
|
---|
[821] | 82 | struct in6_ifreq {
|
---|
| 83 | struct in6_addr ifr6_addr;
|
---|
| 84 | uint32_t ifr6_prefixlen;
|
---|
| 85 | int ifr6_ifindex;
|
---|
| 86 | };
|
---|
| 87 | #endif
|
---|
| 88 |
|
---|
| 89 | /*
|
---|
| 90 | * Here are the bit masks for the "flags" member of struct options below.
|
---|
| 91 | * N_ signifies no arg prefix; M_ signifies arg prefixed by '-'.
|
---|
| 92 | * CLR clears the flag; SET sets the flag; ARG signifies (optional) arg.
|
---|
| 93 | */
|
---|
| 94 | #define N_CLR 0x01
|
---|
| 95 | #define M_CLR 0x02
|
---|
| 96 | #define N_SET 0x04
|
---|
| 97 | #define M_SET 0x08
|
---|
| 98 | #define N_ARG 0x10
|
---|
| 99 | #define M_ARG 0x20
|
---|
| 100 |
|
---|
| 101 | #define M_MASK (M_CLR | M_SET | M_ARG)
|
---|
| 102 | #define N_MASK (N_CLR | N_SET | N_ARG)
|
---|
| 103 | #define SET_MASK (N_SET | M_SET)
|
---|
| 104 | #define CLR_MASK (N_CLR | M_CLR)
|
---|
| 105 | #define SET_CLR_MASK (SET_MASK | CLR_MASK)
|
---|
| 106 | #define ARG_MASK (M_ARG | N_ARG)
|
---|
| 107 |
|
---|
| 108 | /*
|
---|
| 109 | * Here are the bit masks for the "arg_flags" member of struct options below.
|
---|
| 110 | */
|
---|
| 111 |
|
---|
| 112 | /*
|
---|
| 113 | * cast type:
|
---|
| 114 | * 00 int
|
---|
| 115 | * 01 char *
|
---|
| 116 | * 02 HOST_COPY in_ether
|
---|
| 117 | * 03 HOST_COPY INET_resolve
|
---|
| 118 | */
|
---|
| 119 | #define A_CAST_TYPE 0x03
|
---|
| 120 | /*
|
---|
| 121 | * map type:
|
---|
| 122 | * 00 not a map type (mem_start, io_addr, irq)
|
---|
| 123 | * 04 memstart (unsigned long)
|
---|
| 124 | * 08 io_addr (unsigned short)
|
---|
| 125 | * 0C irq (unsigned char)
|
---|
| 126 | */
|
---|
| 127 | #define A_MAP_TYPE 0x0C
|
---|
| 128 | #define A_ARG_REQ 0x10 /* Set if an arg is required. */
|
---|
| 129 | #define A_NETMASK 0x20 /* Set if netmask (check for multiple sets). */
|
---|
| 130 | #define A_SET_AFTER 0x40 /* Set a flag at the end. */
|
---|
| 131 | #define A_COLON_CHK 0x80 /* Is this needed? See below. */
|
---|
[1765] | 132 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
[821] | 133 | #define A_HOSTNAME 0x100 /* Set if it is ip addr. */
|
---|
| 134 | #define A_BROADCAST 0x200 /* Set if it is broadcast addr. */
|
---|
| 135 | #else
|
---|
| 136 | #define A_HOSTNAME 0
|
---|
| 137 | #define A_BROADCAST 0
|
---|
| 138 | #endif
|
---|
| 139 |
|
---|
| 140 | /*
|
---|
| 141 | * These defines are for dealing with the A_CAST_TYPE field.
|
---|
| 142 | */
|
---|
| 143 | #define A_CAST_CHAR_PTR 0x01
|
---|
| 144 | #define A_CAST_RESOLVE 0x01
|
---|
| 145 | #define A_CAST_HOST_COPY 0x02
|
---|
| 146 | #define A_CAST_HOST_COPY_IN_ETHER A_CAST_HOST_COPY
|
---|
| 147 | #define A_CAST_HOST_COPY_RESOLVE (A_CAST_HOST_COPY | A_CAST_RESOLVE)
|
---|
| 148 |
|
---|
| 149 | /*
|
---|
| 150 | * These defines are for dealing with the A_MAP_TYPE field.
|
---|
| 151 | */
|
---|
| 152 | #define A_MAP_ULONG 0x04 /* memstart */
|
---|
| 153 | #define A_MAP_USHORT 0x08 /* io_addr */
|
---|
| 154 | #define A_MAP_UCHAR 0x0C /* irq */
|
---|
| 155 |
|
---|
| 156 | /*
|
---|
| 157 | * Define the bit masks signifying which operations to perform for each arg.
|
---|
| 158 | */
|
---|
| 159 |
|
---|
| 160 | #define ARG_METRIC (A_ARG_REQ /*| A_CAST_INT*/)
|
---|
| 161 | #define ARG_MTU (A_ARG_REQ /*| A_CAST_INT*/)
|
---|
| 162 | #define ARG_TXQUEUELEN (A_ARG_REQ /*| A_CAST_INT*/)
|
---|
| 163 | #define ARG_MEM_START (A_ARG_REQ | A_MAP_ULONG)
|
---|
| 164 | #define ARG_IO_ADDR (A_ARG_REQ | A_MAP_ULONG)
|
---|
| 165 | #define ARG_IRQ (A_ARG_REQ | A_MAP_UCHAR)
|
---|
| 166 | #define ARG_DSTADDR (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE)
|
---|
| 167 | #define ARG_NETMASK (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_NETMASK)
|
---|
| 168 | #define ARG_BROADCAST (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_BROADCAST)
|
---|
| 169 | #define ARG_HW (A_ARG_REQ | A_CAST_HOST_COPY_IN_ETHER)
|
---|
| 170 | #define ARG_POINTOPOINT (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
|
---|
| 171 | #define ARG_KEEPALIVE (A_ARG_REQ | A_CAST_CHAR_PTR)
|
---|
| 172 | #define ARG_OUTFILL (A_ARG_REQ | A_CAST_CHAR_PTR)
|
---|
| 173 | #define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK | A_HOSTNAME)
|
---|
| 174 | #define ARG_ADD_DEL (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
|
---|
| 175 |
|
---|
| 176 |
|
---|
| 177 | struct arg1opt {
|
---|
| 178 | const char *name;
|
---|
[2725] | 179 | unsigned short selector;
|
---|
[821] | 180 | unsigned short ifr_offset;
|
---|
| 181 | };
|
---|
| 182 |
|
---|
| 183 | struct options {
|
---|
| 184 | const char *name;
|
---|
[1765] | 185 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
[821] | 186 | const unsigned int flags:6;
|
---|
| 187 | const unsigned int arg_flags:10;
|
---|
| 188 | #else
|
---|
| 189 | const unsigned char flags;
|
---|
| 190 | const unsigned char arg_flags;
|
---|
| 191 | #endif
|
---|
| 192 | const unsigned short selector;
|
---|
| 193 | };
|
---|
| 194 |
|
---|
| 195 | #define ifreq_offsetof(x) offsetof(struct ifreq, x)
|
---|
| 196 |
|
---|
[3232] | 197 | /*
|
---|
| 198 | * Set up the tables. Warning! They must have corresponding order!
|
---|
| 199 | */
|
---|
| 200 |
|
---|
[821] | 201 | static const struct arg1opt Arg1Opt[] = {
|
---|
[2725] | 202 | { "SIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric) },
|
---|
| 203 | { "SIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu) },
|
---|
| 204 | { "SIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen) },
|
---|
| 205 | { "SIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr) },
|
---|
| 206 | { "SIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask) },
|
---|
| 207 | { "SIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr) },
|
---|
[1765] | 208 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[2725] | 209 | { "SIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr) },
|
---|
[821] | 210 | #endif
|
---|
[2725] | 211 | { "SIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr) },
|
---|
[821] | 212 | #ifdef SIOCSKEEPALIVE
|
---|
[2725] | 213 | { "SKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data) },
|
---|
[821] | 214 | #endif
|
---|
| 215 | #ifdef SIOCSOUTFILL
|
---|
[2725] | 216 | { "SOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data) },
|
---|
[821] | 217 | #endif
|
---|
[1765] | 218 | #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
---|
[2725] | 219 | { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start) },
|
---|
| 220 | { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr) },
|
---|
| 221 | { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq) },
|
---|
[821] | 222 | #endif
|
---|
[1765] | 223 | #if ENABLE_FEATURE_IPV6
|
---|
[2725] | 224 | { "SIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr) }, /* IPv6 version ignores the offset */
|
---|
| 225 | { "DIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr) }, /* IPv6 version ignores the offset */
|
---|
[821] | 226 | #endif
|
---|
[3232] | 227 | /* Last entry is for unmatched (assumed to be hostname/address) arg. */
|
---|
[2725] | 228 | { "SIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr) },
|
---|
[821] | 229 | };
|
---|
| 230 |
|
---|
| 231 | static const struct options OptArray[] = {
|
---|
[2725] | 232 | { "metric", N_ARG, ARG_METRIC, 0 },
|
---|
| 233 | { "mtu", N_ARG, ARG_MTU, 0 },
|
---|
| 234 | { "txqueuelen", N_ARG, ARG_TXQUEUELEN, 0 },
|
---|
| 235 | { "dstaddr", N_ARG, ARG_DSTADDR, 0 },
|
---|
| 236 | { "netmask", N_ARG, ARG_NETMASK, 0 },
|
---|
| 237 | { "broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST },
|
---|
[1765] | 238 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[2725] | 239 | { "hw", N_ARG, ARG_HW, 0 },
|
---|
[821] | 240 | #endif
|
---|
[2725] | 241 | { "pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT },
|
---|
[821] | 242 | #ifdef SIOCSKEEPALIVE
|
---|
[2725] | 243 | { "keepalive", N_ARG, ARG_KEEPALIVE, 0 },
|
---|
[821] | 244 | #endif
|
---|
| 245 | #ifdef SIOCSOUTFILL
|
---|
[2725] | 246 | { "outfill", N_ARG, ARG_OUTFILL, 0 },
|
---|
[821] | 247 | #endif
|
---|
[1765] | 248 | #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
---|
[2725] | 249 | { "mem_start", N_ARG, ARG_MEM_START, 0 },
|
---|
| 250 | { "io_addr", N_ARG, ARG_IO_ADDR, 0 },
|
---|
| 251 | { "irq", N_ARG, ARG_IRQ, 0 },
|
---|
[821] | 252 | #endif
|
---|
[1765] | 253 | #if ENABLE_FEATURE_IPV6
|
---|
[2725] | 254 | { "add", N_ARG, ARG_ADD_DEL, 0 },
|
---|
| 255 | { "del", N_ARG, ARG_ADD_DEL, 0 },
|
---|
[821] | 256 | #endif
|
---|
[2725] | 257 | { "arp", N_CLR | M_SET, 0, IFF_NOARP },
|
---|
| 258 | { "trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS },
|
---|
| 259 | { "promisc", N_SET | M_CLR, 0, IFF_PROMISC },
|
---|
| 260 | { "multicast", N_SET | M_CLR, 0, IFF_MULTICAST },
|
---|
| 261 | { "allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI },
|
---|
| 262 | { "dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC },
|
---|
| 263 | { "up", N_SET, 0, (IFF_UP | IFF_RUNNING) },
|
---|
| 264 | { "down", N_CLR, 0, IFF_UP },
|
---|
| 265 | { NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING) }
|
---|
[821] | 266 | };
|
---|
| 267 |
|
---|
[1765] | 268 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[3232] | 269 | /* Input an Ethernet address and convert to binary. */
|
---|
| 270 | static int in_ether(const char *bufp, struct sockaddr *sap)
|
---|
| 271 | {
|
---|
| 272 | char *ptr;
|
---|
| 273 | int i, j;
|
---|
| 274 | unsigned char val;
|
---|
| 275 | unsigned char c;
|
---|
| 276 |
|
---|
| 277 | sap->sa_family = ARPHRD_ETHER;
|
---|
| 278 | ptr = (char *) sap->sa_data;
|
---|
| 279 |
|
---|
| 280 | i = 0;
|
---|
| 281 | do {
|
---|
| 282 | j = val = 0;
|
---|
| 283 |
|
---|
| 284 | /* We might get a semicolon here - not required. */
|
---|
| 285 | if (i && (*bufp == ':')) {
|
---|
| 286 | bufp++;
|
---|
| 287 | }
|
---|
| 288 |
|
---|
| 289 | do {
|
---|
| 290 | c = *bufp;
|
---|
| 291 | if (((unsigned char)(c - '0')) <= 9) {
|
---|
| 292 | c -= '0';
|
---|
| 293 | } else if ((unsigned char)((c|0x20) - 'a') <= 5) {
|
---|
| 294 | c = (unsigned char)((c|0x20) - 'a') + 10;
|
---|
| 295 | } else if (j && (c == ':' || c == 0)) {
|
---|
| 296 | break;
|
---|
| 297 | } else {
|
---|
| 298 | return -1;
|
---|
| 299 | }
|
---|
| 300 | ++bufp;
|
---|
| 301 | val <<= 4;
|
---|
| 302 | val += c;
|
---|
| 303 | } while (++j < 2);
|
---|
| 304 | *ptr++ = val;
|
---|
| 305 | } while (++i < ETH_ALEN);
|
---|
| 306 |
|
---|
| 307 | return *bufp; /* Error if we don't end at end of string. */
|
---|
| 308 | }
|
---|
[821] | 309 | #endif
|
---|
| 310 |
|
---|
[2725] | 311 | int ifconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 312 | int ifconfig_main(int argc UNUSED_PARAM, char **argv)
|
---|
[821] | 313 | {
|
---|
| 314 | struct ifreq ifr;
|
---|
| 315 | struct sockaddr_in sai;
|
---|
[1765] | 316 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[821] | 317 | struct sockaddr sa;
|
---|
| 318 | #endif
|
---|
| 319 | const struct arg1opt *a1op;
|
---|
| 320 | const struct options *op;
|
---|
| 321 | int sockfd; /* socket fd we use to manipulate stuff with */
|
---|
| 322 | int selector;
|
---|
[1765] | 323 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
[821] | 324 | unsigned int mask;
|
---|
| 325 | unsigned int did_flags;
|
---|
| 326 | unsigned int sai_hostname, sai_netmask;
|
---|
| 327 | #else
|
---|
| 328 | unsigned char mask;
|
---|
| 329 | unsigned char did_flags;
|
---|
| 330 | #endif
|
---|
| 331 | char *p;
|
---|
[1765] | 332 | /*char host[128];*/
|
---|
| 333 | const char *host = NULL; /* make gcc happy */
|
---|
[821] | 334 |
|
---|
| 335 | did_flags = 0;
|
---|
[1765] | 336 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
[821] | 337 | sai_hostname = 0;
|
---|
| 338 | sai_netmask = 0;
|
---|
| 339 | #endif
|
---|
| 340 |
|
---|
| 341 | /* skip argv[0] */
|
---|
| 342 | ++argv;
|
---|
| 343 |
|
---|
[1765] | 344 | #if ENABLE_FEATURE_IFCONFIG_STATUS
|
---|
[2725] | 345 | if (argv[0] && (argv[0][0] == '-' && argv[0][1] == 'a' && !argv[0][2])) {
|
---|
[821] | 346 | interface_opt_a = 1;
|
---|
| 347 | ++argv;
|
---|
| 348 | }
|
---|
| 349 | #endif
|
---|
| 350 |
|
---|
[2725] | 351 | if (!argv[0] || !argv[1]) { /* one or no args */
|
---|
[1765] | 352 | #if ENABLE_FEATURE_IFCONFIG_STATUS
|
---|
[2725] | 353 | return display_interfaces(argv[0] /* can be NULL */);
|
---|
[821] | 354 | #else
|
---|
[1765] | 355 | bb_error_msg_and_die("no support for status display");
|
---|
[821] | 356 | #endif
|
---|
| 357 | }
|
---|
| 358 |
|
---|
| 359 | /* Create a channel to the NET kernel. */
|
---|
[1765] | 360 | sockfd = xsocket(AF_INET, SOCK_DGRAM, 0);
|
---|
[821] | 361 |
|
---|
| 362 | /* get interface name */
|
---|
[2725] | 363 | strncpy_IFNAMSIZ(ifr.ifr_name, *argv);
|
---|
[821] | 364 |
|
---|
| 365 | /* Process the remaining arguments. */
|
---|
[3232] | 366 | while (*++argv != NULL) {
|
---|
[821] | 367 | p = *argv;
|
---|
| 368 | mask = N_MASK;
|
---|
| 369 | if (*p == '-') { /* If the arg starts with '-'... */
|
---|
| 370 | ++p; /* advance past it and */
|
---|
| 371 | mask = M_MASK; /* set the appropriate mask. */
|
---|
| 372 | }
|
---|
| 373 | for (op = OptArray; op->name; op++) { /* Find table entry. */
|
---|
| 374 | if (strcmp(p, op->name) == 0) { /* If name matches... */
|
---|
[1765] | 375 | mask &= op->flags;
|
---|
| 376 | if (mask) /* set the mask and go. */
|
---|
[821] | 377 | goto FOUND_ARG;
|
---|
| 378 | /* If we get here, there was a valid arg with an */
|
---|
| 379 | /* invalid '-' prefix. */
|
---|
[1765] | 380 | bb_error_msg_and_die("bad: '%s'", p-1);
|
---|
[821] | 381 | }
|
---|
| 382 | }
|
---|
| 383 |
|
---|
| 384 | /* We fell through, so treat as possible hostname. */
|
---|
[1765] | 385 | a1op = Arg1Opt + ARRAY_SIZE(Arg1Opt) - 1;
|
---|
[821] | 386 | mask = op->arg_flags;
|
---|
| 387 | goto HOSTNAME;
|
---|
| 388 |
|
---|
[1765] | 389 | FOUND_ARG:
|
---|
[821] | 390 | if (mask & ARG_MASK) {
|
---|
| 391 | mask = op->arg_flags;
|
---|
[1765] | 392 | if (mask & A_NETMASK & did_flags)
|
---|
[821] | 393 | bb_show_usage();
|
---|
[3232] | 394 | a1op = Arg1Opt + (op - OptArray);
|
---|
[821] | 395 | if (*++argv == NULL) {
|
---|
[1765] | 396 | if (mask & A_ARG_REQ)
|
---|
[821] | 397 | bb_show_usage();
|
---|
[1765] | 398 | --argv;
|
---|
| 399 | mask &= A_SET_AFTER; /* just for broadcast */
|
---|
[821] | 400 | } else { /* got an arg so process it */
|
---|
[1765] | 401 | HOSTNAME:
|
---|
[821] | 402 | did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
|
---|
| 403 | if (mask & A_CAST_HOST_COPY) {
|
---|
[1765] | 404 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[821] | 405 | if (mask & A_CAST_RESOLVE) {
|
---|
| 406 | #endif
|
---|
[1765] | 407 | host = *argv;
|
---|
[3232] | 408 | if (strcmp(host, "inet") == 0)
|
---|
| 409 | continue; /* compat stuff */
|
---|
[821] | 410 | sai.sin_family = AF_INET;
|
---|
| 411 | sai.sin_port = 0;
|
---|
[2725] | 412 | if (strcmp(host, "default") == 0) {
|
---|
[821] | 413 | /* Default is special, meaning 0.0.0.0. */
|
---|
| 414 | sai.sin_addr.s_addr = INADDR_ANY;
|
---|
[1765] | 415 | }
|
---|
| 416 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
[3232] | 417 | else if ((host[0] == '+' && !host[1])
|
---|
| 418 | && (mask & A_BROADCAST)
|
---|
[1765] | 419 | && (did_flags & (A_NETMASK|A_HOSTNAME)) == (A_NETMASK|A_HOSTNAME)
|
---|
| 420 | ) {
|
---|
[821] | 421 | /* + is special, meaning broadcast is derived. */
|
---|
| 422 | sai.sin_addr.s_addr = (~sai_netmask) | (sai_hostname & sai_netmask);
|
---|
[1765] | 423 | }
|
---|
[821] | 424 | #endif
|
---|
[1765] | 425 | else {
|
---|
| 426 | len_and_sockaddr *lsa;
|
---|
[3232] | 427 | #if ENABLE_FEATURE_IPV6
|
---|
| 428 | char *prefix;
|
---|
| 429 | int prefix_len = 0;
|
---|
| 430 | prefix = strchr(host, '/');
|
---|
| 431 | if (prefix) {
|
---|
| 432 | prefix_len = xatou_range(prefix + 1, 0, 128);
|
---|
| 433 | *prefix = '\0';
|
---|
| 434 | }
|
---|
| 435 | resolve:
|
---|
| 436 | #endif
|
---|
[1765] | 437 | lsa = xhost2sockaddr(host, 0);
|
---|
| 438 | #if ENABLE_FEATURE_IPV6
|
---|
[3232] | 439 | if (lsa->u.sa.sa_family != AF_INET6 && prefix) {
|
---|
| 440 | /* TODO: we do not support "ifconfig eth0 up 1.2.3.4/17".
|
---|
| 441 | * For now, just make it fail instead of silently ignoring "/17" part:
|
---|
| 442 | */
|
---|
| 443 | *prefix = '/';
|
---|
| 444 | goto resolve;
|
---|
| 445 | }
|
---|
[2725] | 446 | if (lsa->u.sa.sa_family == AF_INET6) {
|
---|
[1765] | 447 | int sockfd6;
|
---|
| 448 | struct in6_ifreq ifr6;
|
---|
[821] | 449 |
|
---|
[1765] | 450 | sockfd6 = xsocket(AF_INET6, SOCK_DGRAM, 0);
|
---|
[3232] | 451 | xioctl(sockfd6, SIOCGIFINDEX, &ifr);
|
---|
[1765] | 452 | ifr6.ifr6_ifindex = ifr.ifr_ifindex;
|
---|
| 453 | ifr6.ifr6_prefixlen = prefix_len;
|
---|
[3232] | 454 | memcpy(&ifr6.ifr6_addr,
|
---|
| 455 | &lsa->u.sin6.sin6_addr,
|
---|
| 456 | sizeof(struct in6_addr));
|
---|
[2725] | 457 | ioctl_or_perror_and_die(sockfd6, a1op->selector, &ifr6, "SIOC%s", a1op->name);
|
---|
[1765] | 458 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 459 | free(lsa);
|
---|
[821] | 460 | continue;
|
---|
| 461 | }
|
---|
| 462 | #endif
|
---|
[2725] | 463 | sai.sin_addr = lsa->u.sin.sin_addr;
|
---|
[1765] | 464 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 465 | free(lsa);
|
---|
[821] | 466 | }
|
---|
[1765] | 467 | #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
|
---|
| 468 | if (mask & A_HOSTNAME)
|
---|
[821] | 469 | sai_hostname = sai.sin_addr.s_addr;
|
---|
[1765] | 470 | if (mask & A_NETMASK)
|
---|
[821] | 471 | sai_netmask = sai.sin_addr.s_addr;
|
---|
| 472 | #endif
|
---|
| 473 | p = (char *) &sai;
|
---|
[1765] | 474 | #if ENABLE_FEATURE_IFCONFIG_HW
|
---|
[821] | 475 | } else { /* A_CAST_HOST_COPY_IN_ETHER */
|
---|
| 476 | /* This is the "hw" arg case. */
|
---|
[3232] | 477 | smalluint hw_class = index_in_substrings("ether\0"
|
---|
[2725] | 478 | IF_FEATURE_HWIB("infiniband\0"), *argv) + 1;
|
---|
| 479 | if (!hw_class || !*++argv)
|
---|
[821] | 480 | bb_show_usage();
|
---|
[1765] | 481 | host = *argv;
|
---|
[2725] | 482 | if (hw_class == 1 ? in_ether(host, &sa) : in_ib(host, &sa))
|
---|
[1765] | 483 | bb_error_msg_and_die("invalid hw-addr %s", host);
|
---|
[821] | 484 | p = (char *) &sa;
|
---|
| 485 | }
|
---|
| 486 | #endif
|
---|
[3232] | 487 | memcpy( ((char *)&ifr) + a1op->ifr_offset,
|
---|
| 488 | p, sizeof(struct sockaddr));
|
---|
[821] | 489 | } else {
|
---|
[1765] | 490 | /* FIXME: error check?? */
|
---|
[821] | 491 | unsigned long i = strtoul(*argv, NULL, 0);
|
---|
[1765] | 492 | p = ((char *)&ifr) + a1op->ifr_offset;
|
---|
| 493 | #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
---|
[821] | 494 | if (mask & A_MAP_TYPE) {
|
---|
[1765] | 495 | xioctl(sockfd, SIOCGIFMAP, &ifr);
|
---|
| 496 | if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR)
|
---|
[3232] | 497 | *(unsigned char *) p = i;
|
---|
[1765] | 498 | else if (mask & A_MAP_USHORT)
|
---|
[3232] | 499 | *(unsigned short *) p = i;
|
---|
[1765] | 500 | else
|
---|
[3232] | 501 | *(unsigned long *) p = i;
|
---|
[821] | 502 | } else
|
---|
| 503 | #endif
|
---|
[1765] | 504 | if (mask & A_CAST_CHAR_PTR)
|
---|
[3232] | 505 | *(caddr_t *) p = (caddr_t) i;
|
---|
[1765] | 506 | else /* A_CAST_INT */
|
---|
[3232] | 507 | *(int *) p = i;
|
---|
[821] | 508 | }
|
---|
| 509 |
|
---|
[2725] | 510 | ioctl_or_perror_and_die(sockfd, a1op->selector, &ifr, "SIOC%s", a1op->name);
|
---|
[821] | 511 | #ifdef QUESTIONABLE_ALIAS_CASE
|
---|
| 512 | if (mask & A_COLON_CHK) {
|
---|
| 513 | /*
|
---|
| 514 | * Don't do the set_flag() if the address is an alias with
|
---|
[1765] | 515 | * a '-' at the end, since it's deleted already! - Roman
|
---|
[821] | 516 | *
|
---|
| 517 | * Should really use regex.h here, not sure though how well
|
---|
| 518 | * it'll go with the cross-platform support etc.
|
---|
| 519 | */
|
---|
| 520 | char *ptr;
|
---|
| 521 | short int found_colon = 0;
|
---|
[1765] | 522 | for (ptr = ifr.ifr_name; *ptr; ptr++)
|
---|
| 523 | if (*ptr == ':')
|
---|
[821] | 524 | found_colon++;
|
---|
[1765] | 525 | if (found_colon && ptr[-1] == '-')
|
---|
[821] | 526 | continue;
|
---|
| 527 | }
|
---|
| 528 | #endif
|
---|
| 529 | }
|
---|
[1765] | 530 | if (!(mask & A_SET_AFTER))
|
---|
[821] | 531 | continue;
|
---|
| 532 | mask = N_SET;
|
---|
[3232] | 533 | } /* if (mask & ARG_MASK) */
|
---|
[821] | 534 |
|
---|
[1765] | 535 | xioctl(sockfd, SIOCGIFFLAGS, &ifr);
|
---|
| 536 | selector = op->selector;
|
---|
| 537 | if (mask & SET_MASK)
|
---|
| 538 | ifr.ifr_flags |= selector;
|
---|
| 539 | else
|
---|
| 540 | ifr.ifr_flags &= ~selector;
|
---|
| 541 | xioctl(sockfd, SIOCSIFFLAGS, &ifr);
|
---|
| 542 | } /* while () */
|
---|
[821] | 543 |
|
---|
[1765] | 544 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 545 | close(sockfd);
|
---|
| 546 | return 0;
|
---|
[821] | 547 | }
|
---|