[1765] | 1 | /* vi: set sw=4 ts=4: */
|
---|
[821] | 2 | /*
|
---|
[2725] | 3 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
[821] | 4 | *
|
---|
[2725] | 5 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
|
---|
[821] | 6 | *
|
---|
| 7 | * Changes:
|
---|
[2725] | 8 | * Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated
|
---|
[821] | 9 | */
|
---|
| 10 |
|
---|
| 11 | #include <fnmatch.h>
|
---|
| 12 | #include <net/if.h>
|
---|
| 13 | #include <net/if_arp.h>
|
---|
| 14 |
|
---|
[1765] | 15 | #include "ip_common.h" /* #include "libbb.h" is inside */
|
---|
[821] | 16 | #include "rt_names.h"
|
---|
| 17 | #include "utils.h"
|
---|
| 18 |
|
---|
[2725] | 19 | #ifndef IFF_LOWER_UP
|
---|
| 20 | /* from linux/if.h */
|
---|
| 21 | #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
|
---|
| 22 | #endif
|
---|
[821] | 23 |
|
---|
[2725] | 24 | struct filter_t {
|
---|
| 25 | char *label;
|
---|
| 26 | char *flushb;
|
---|
| 27 | struct rtnl_handle *rth;
|
---|
[821] | 28 | int scope, scopemask;
|
---|
| 29 | int flags, flagmask;
|
---|
| 30 | int flushp;
|
---|
| 31 | int flushe;
|
---|
[2725] | 32 | int ifindex;
|
---|
| 33 | family_t family;
|
---|
| 34 | smallint showqueue;
|
---|
| 35 | smallint oneline;
|
---|
| 36 | smallint up;
|
---|
| 37 | smallint flushed;
|
---|
| 38 | inet_prefix pfx;
|
---|
| 39 | } FIX_ALIASING;
|
---|
| 40 | typedef struct filter_t filter_t;
|
---|
[821] | 41 |
|
---|
[2725] | 42 | #define G_filter (*(filter_t*)&bb_common_bufsiz1)
|
---|
[1765] | 43 |
|
---|
| 44 |
|
---|
[2725] | 45 | static void print_link_flags(unsigned flags, unsigned mdown)
|
---|
[821] | 46 | {
|
---|
[2725] | 47 | static const int flag_masks[] = {
|
---|
| 48 | IFF_LOOPBACK, IFF_BROADCAST, IFF_POINTOPOINT,
|
---|
| 49 | IFF_MULTICAST, IFF_NOARP, IFF_UP, IFF_LOWER_UP };
|
---|
| 50 | static const char flag_labels[] ALIGN1 =
|
---|
| 51 | "LOOPBACK\0""BROADCAST\0""POINTOPOINT\0"
|
---|
| 52 | "MULTICAST\0""NOARP\0""UP\0""LOWER_UP\0";
|
---|
| 53 |
|
---|
| 54 | bb_putchar('<');
|
---|
| 55 | if (flags & IFF_UP && !(flags & IFF_RUNNING))
|
---|
| 56 | printf("NO-CARRIER,");
|
---|
[821] | 57 | flags &= ~IFF_RUNNING;
|
---|
| 58 | #if 0
|
---|
| 59 | _PF(ALLMULTI);
|
---|
| 60 | _PF(PROMISC);
|
---|
| 61 | _PF(MASTER);
|
---|
| 62 | _PF(SLAVE);
|
---|
| 63 | _PF(DEBUG);
|
---|
| 64 | _PF(DYNAMIC);
|
---|
| 65 | _PF(AUTOMEDIA);
|
---|
| 66 | _PF(PORTSEL);
|
---|
| 67 | _PF(NOTRAILERS);
|
---|
| 68 | #endif
|
---|
[2725] | 69 | flags = print_flags_separated(flag_masks, flag_labels, flags, ",");
|
---|
[821] | 70 | if (flags)
|
---|
[2725] | 71 | printf("%x", flags);
|
---|
[821] | 72 | if (mdown)
|
---|
[2725] | 73 | printf(",M-DOWN");
|
---|
| 74 | printf("> ");
|
---|
[821] | 75 | }
|
---|
| 76 |
|
---|
| 77 | static void print_queuelen(char *name)
|
---|
| 78 | {
|
---|
| 79 | struct ifreq ifr;
|
---|
| 80 | int s;
|
---|
| 81 |
|
---|
| 82 | s = socket(AF_INET, SOCK_STREAM, 0);
|
---|
| 83 | if (s < 0)
|
---|
| 84 | return;
|
---|
| 85 |
|
---|
| 86 | memset(&ifr, 0, sizeof(ifr));
|
---|
[2725] | 87 | strncpy_IFNAMSIZ(ifr.ifr_name, name);
|
---|
[1765] | 88 | if (ioctl_or_warn(s, SIOCGIFTXQLEN, &ifr) < 0) {
|
---|
[821] | 89 | close(s);
|
---|
| 90 | return;
|
---|
| 91 | }
|
---|
| 92 | close(s);
|
---|
| 93 |
|
---|
| 94 | if (ifr.ifr_qlen)
|
---|
| 95 | printf("qlen %d", ifr.ifr_qlen);
|
---|
| 96 | }
|
---|
| 97 |
|
---|
[2725] | 98 | static NOINLINE int print_linkinfo(const struct nlmsghdr *n)
|
---|
[821] | 99 | {
|
---|
| 100 | struct ifinfomsg *ifi = NLMSG_DATA(n);
|
---|
[2725] | 101 | struct rtattr *tb[IFLA_MAX+1];
|
---|
[821] | 102 | int len = n->nlmsg_len;
|
---|
| 103 |
|
---|
| 104 | if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
|
---|
| 105 | return 0;
|
---|
| 106 |
|
---|
| 107 | len -= NLMSG_LENGTH(sizeof(*ifi));
|
---|
| 108 | if (len < 0)
|
---|
| 109 | return -1;
|
---|
| 110 |
|
---|
[2725] | 111 | if (G_filter.ifindex && ifi->ifi_index != G_filter.ifindex)
|
---|
[821] | 112 | return 0;
|
---|
[2725] | 113 | if (G_filter.up && !(ifi->ifi_flags & IFF_UP))
|
---|
[821] | 114 | return 0;
|
---|
| 115 |
|
---|
| 116 | memset(tb, 0, sizeof(tb));
|
---|
| 117 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
|
---|
| 118 | if (tb[IFLA_IFNAME] == NULL) {
|
---|
| 119 | bb_error_msg("nil ifname");
|
---|
| 120 | return -1;
|
---|
| 121 | }
|
---|
[2725] | 122 | if (G_filter.label
|
---|
| 123 | && (!G_filter.family || G_filter.family == AF_PACKET)
|
---|
| 124 | && fnmatch(G_filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0)
|
---|
[1765] | 125 | ) {
|
---|
[821] | 126 | return 0;
|
---|
[1765] | 127 | }
|
---|
[821] | 128 |
|
---|
| 129 | if (n->nlmsg_type == RTM_DELLINK)
|
---|
[2725] | 130 | printf("Deleted ");
|
---|
[821] | 131 |
|
---|
[2725] | 132 | printf("%d: %s", ifi->ifi_index,
|
---|
| 133 | /*tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>" - we checked tb[IFLA_IFNAME] above*/
|
---|
| 134 | (char*)RTA_DATA(tb[IFLA_IFNAME])
|
---|
| 135 | );
|
---|
[821] | 136 |
|
---|
[2725] | 137 | {
|
---|
| 138 | unsigned m_flag = 0;
|
---|
| 139 | if (tb[IFLA_LINK]) {
|
---|
| 140 | SPRINT_BUF(b1);
|
---|
| 141 | int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
|
---|
| 142 | if (iflink == 0)
|
---|
| 143 | printf("@NONE: ");
|
---|
| 144 | else {
|
---|
| 145 | printf("@%s: ", ll_idx_n2a(iflink, b1));
|
---|
| 146 | m_flag = ll_index_to_flags(iflink);
|
---|
| 147 | m_flag = !(m_flag & IFF_UP);
|
---|
| 148 | }
|
---|
| 149 | } else {
|
---|
| 150 | printf(": ");
|
---|
[821] | 151 | }
|
---|
[2725] | 152 | print_link_flags(ifi->ifi_flags, m_flag);
|
---|
[821] | 153 | }
|
---|
| 154 |
|
---|
| 155 | if (tb[IFLA_MTU])
|
---|
[2725] | 156 | printf("mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
|
---|
[821] | 157 | if (tb[IFLA_QDISC])
|
---|
[2725] | 158 | printf("qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
|
---|
[821] | 159 | #ifdef IFLA_MASTER
|
---|
| 160 | if (tb[IFLA_MASTER]) {
|
---|
| 161 | SPRINT_BUF(b1);
|
---|
[2725] | 162 | printf("master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
|
---|
[821] | 163 | }
|
---|
| 164 | #endif
|
---|
[3232] | 165 | /* IFLA_OPERSTATE was added to kernel with the same commit as IFF_DORMANT */
|
---|
| 166 | #ifdef IFF_DORMANT
|
---|
[2725] | 167 | if (tb[IFLA_OPERSTATE]) {
|
---|
| 168 | static const char operstate_labels[] ALIGN1 =
|
---|
| 169 | "UNKNOWN\0""NOTPRESENT\0""DOWN\0""LOWERLAYERDOWN\0"
|
---|
| 170 | "TESTING\0""DORMANT\0""UP\0";
|
---|
| 171 | printf("state %s ", nth_string(operstate_labels,
|
---|
| 172 | *(uint8_t *)RTA_DATA(tb[IFLA_OPERSTATE])));
|
---|
| 173 | }
|
---|
[3232] | 174 | #endif
|
---|
[2725] | 175 | if (G_filter.showqueue)
|
---|
[821] | 176 | print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
|
---|
| 177 |
|
---|
[2725] | 178 | if (!G_filter.family || G_filter.family == AF_PACKET) {
|
---|
[821] | 179 | SPRINT_BUF(b1);
|
---|
[2725] | 180 | printf("%c link/%s ", _SL_, ll_type_n2a(ifi->ifi_type, b1));
|
---|
[821] | 181 |
|
---|
| 182 | if (tb[IFLA_ADDRESS]) {
|
---|
[2725] | 183 | fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
|
---|
[821] | 184 | RTA_PAYLOAD(tb[IFLA_ADDRESS]),
|
---|
| 185 | ifi->ifi_type,
|
---|
[2725] | 186 | b1, sizeof(b1)), stdout);
|
---|
[821] | 187 | }
|
---|
| 188 | if (tb[IFLA_BROADCAST]) {
|
---|
[2725] | 189 | if (ifi->ifi_flags & IFF_POINTOPOINT)
|
---|
| 190 | printf(" peer ");
|
---|
[821] | 191 | else
|
---|
[2725] | 192 | printf(" brd ");
|
---|
| 193 | fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
|
---|
[821] | 194 | RTA_PAYLOAD(tb[IFLA_BROADCAST]),
|
---|
| 195 | ifi->ifi_type,
|
---|
[2725] | 196 | b1, sizeof(b1)), stdout);
|
---|
[821] | 197 | }
|
---|
| 198 | }
|
---|
[2725] | 199 | bb_putchar('\n');
|
---|
| 200 | /*fflush_all();*/
|
---|
[821] | 201 | return 0;
|
---|
| 202 | }
|
---|
| 203 |
|
---|
| 204 | static int flush_update(void)
|
---|
| 205 | {
|
---|
[2725] | 206 | if (rtnl_send(G_filter.rth, G_filter.flushb, G_filter.flushp) < 0) {
|
---|
| 207 | bb_perror_msg("can't send flush request");
|
---|
[821] | 208 | return -1;
|
---|
| 209 | }
|
---|
[2725] | 210 | G_filter.flushp = 0;
|
---|
[821] | 211 | return 0;
|
---|
| 212 | }
|
---|
| 213 |
|
---|
[2725] | 214 | static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
|
---|
| 215 | struct nlmsghdr *n, void *arg UNUSED_PARAM)
|
---|
[821] | 216 | {
|
---|
| 217 | struct ifaddrmsg *ifa = NLMSG_DATA(n);
|
---|
| 218 | int len = n->nlmsg_len;
|
---|
| 219 | struct rtattr * rta_tb[IFA_MAX+1];
|
---|
| 220 | char abuf[256];
|
---|
| 221 | SPRINT_BUF(b1);
|
---|
| 222 |
|
---|
| 223 | if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
|
---|
| 224 | return 0;
|
---|
| 225 | len -= NLMSG_LENGTH(sizeof(*ifa));
|
---|
| 226 | if (len < 0) {
|
---|
| 227 | bb_error_msg("wrong nlmsg len %d", len);
|
---|
| 228 | return -1;
|
---|
| 229 | }
|
---|
| 230 |
|
---|
[2725] | 231 | if (G_filter.flushb && n->nlmsg_type != RTM_NEWADDR)
|
---|
[821] | 232 | return 0;
|
---|
| 233 |
|
---|
| 234 | memset(rta_tb, 0, sizeof(rta_tb));
|
---|
| 235 | parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
|
---|
| 236 |
|
---|
| 237 | if (!rta_tb[IFA_LOCAL])
|
---|
| 238 | rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
|
---|
| 239 | if (!rta_tb[IFA_ADDRESS])
|
---|
| 240 | rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
|
---|
| 241 |
|
---|
[2725] | 242 | if (G_filter.ifindex && G_filter.ifindex != ifa->ifa_index)
|
---|
[821] | 243 | return 0;
|
---|
[2725] | 244 | if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
|
---|
[821] | 245 | return 0;
|
---|
[2725] | 246 | if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
|
---|
[821] | 247 | return 0;
|
---|
[2725] | 248 | if (G_filter.label) {
|
---|
[821] | 249 | const char *label;
|
---|
| 250 | if (rta_tb[IFA_LABEL])
|
---|
| 251 | label = RTA_DATA(rta_tb[IFA_LABEL]);
|
---|
| 252 | else
|
---|
| 253 | label = ll_idx_n2a(ifa->ifa_index, b1);
|
---|
[2725] | 254 | if (fnmatch(G_filter.label, label, 0) != 0)
|
---|
[821] | 255 | return 0;
|
---|
| 256 | }
|
---|
[2725] | 257 | if (G_filter.pfx.family) {
|
---|
[821] | 258 | if (rta_tb[IFA_LOCAL]) {
|
---|
| 259 | inet_prefix dst;
|
---|
| 260 | memset(&dst, 0, sizeof(dst));
|
---|
| 261 | dst.family = ifa->ifa_family;
|
---|
| 262 | memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
|
---|
[2725] | 263 | if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
|
---|
[821] | 264 | return 0;
|
---|
| 265 | }
|
---|
| 266 | }
|
---|
| 267 |
|
---|
[2725] | 268 | if (G_filter.flushb) {
|
---|
[821] | 269 | struct nlmsghdr *fn;
|
---|
[2725] | 270 | if (NLMSG_ALIGN(G_filter.flushp) + n->nlmsg_len > G_filter.flushe) {
|
---|
[821] | 271 | if (flush_update())
|
---|
| 272 | return -1;
|
---|
| 273 | }
|
---|
[2725] | 274 | fn = (struct nlmsghdr*)(G_filter.flushb + NLMSG_ALIGN(G_filter.flushp));
|
---|
[821] | 275 | memcpy(fn, n, n->nlmsg_len);
|
---|
| 276 | fn->nlmsg_type = RTM_DELADDR;
|
---|
| 277 | fn->nlmsg_flags = NLM_F_REQUEST;
|
---|
[2725] | 278 | fn->nlmsg_seq = ++G_filter.rth->seq;
|
---|
| 279 | G_filter.flushp = (((char*)fn) + n->nlmsg_len) - G_filter.flushb;
|
---|
| 280 | G_filter.flushed = 1;
|
---|
[821] | 281 | return 0;
|
---|
| 282 | }
|
---|
| 283 |
|
---|
| 284 | if (n->nlmsg_type == RTM_DELADDR)
|
---|
[2725] | 285 | printf("Deleted ");
|
---|
[821] | 286 |
|
---|
[2725] | 287 | if (G_filter.oneline)
|
---|
| 288 | printf("%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
|
---|
[821] | 289 | if (ifa->ifa_family == AF_INET)
|
---|
[2725] | 290 | printf(" inet ");
|
---|
[821] | 291 | else if (ifa->ifa_family == AF_INET6)
|
---|
[2725] | 292 | printf(" inet6 ");
|
---|
[821] | 293 | else
|
---|
[2725] | 294 | printf(" family %d ", ifa->ifa_family);
|
---|
[821] | 295 |
|
---|
| 296 | if (rta_tb[IFA_LOCAL]) {
|
---|
[2725] | 297 | fputs(rt_addr_n2a(ifa->ifa_family,
|
---|
[821] | 298 | RTA_DATA(rta_tb[IFA_LOCAL]),
|
---|
[2725] | 299 | abuf, sizeof(abuf)), stdout);
|
---|
[821] | 300 |
|
---|
[2725] | 301 | if (rta_tb[IFA_ADDRESS] == NULL
|
---|
| 302 | || memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0
|
---|
| 303 | ) {
|
---|
| 304 | printf("/%d ", ifa->ifa_prefixlen);
|
---|
[821] | 305 | } else {
|
---|
[2725] | 306 | printf(" peer %s/%d ",
|
---|
[821] | 307 | rt_addr_n2a(ifa->ifa_family,
|
---|
| 308 | RTA_DATA(rta_tb[IFA_ADDRESS]),
|
---|
| 309 | abuf, sizeof(abuf)),
|
---|
| 310 | ifa->ifa_prefixlen);
|
---|
| 311 | }
|
---|
| 312 | }
|
---|
| 313 |
|
---|
| 314 | if (rta_tb[IFA_BROADCAST]) {
|
---|
[2725] | 315 | printf("brd %s ",
|
---|
[821] | 316 | rt_addr_n2a(ifa->ifa_family,
|
---|
[3232] | 317 | RTA_DATA(rta_tb[IFA_BROADCAST]),
|
---|
| 318 | abuf, sizeof(abuf))
|
---|
| 319 | );
|
---|
[821] | 320 | }
|
---|
| 321 | if (rta_tb[IFA_ANYCAST]) {
|
---|
[2725] | 322 | printf("any %s ",
|
---|
[821] | 323 | rt_addr_n2a(ifa->ifa_family,
|
---|
[3232] | 324 | RTA_DATA(rta_tb[IFA_ANYCAST]),
|
---|
| 325 | abuf, sizeof(abuf))
|
---|
| 326 | );
|
---|
[821] | 327 | }
|
---|
[2725] | 328 | printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1));
|
---|
| 329 | if (ifa->ifa_flags & IFA_F_SECONDARY) {
|
---|
[821] | 330 | ifa->ifa_flags &= ~IFA_F_SECONDARY;
|
---|
[2725] | 331 | printf("secondary ");
|
---|
[821] | 332 | }
|
---|
[2725] | 333 | if (ifa->ifa_flags & IFA_F_TENTATIVE) {
|
---|
[821] | 334 | ifa->ifa_flags &= ~IFA_F_TENTATIVE;
|
---|
[2725] | 335 | printf("tentative ");
|
---|
[821] | 336 | }
|
---|
[2725] | 337 | if (ifa->ifa_flags & IFA_F_DEPRECATED) {
|
---|
[821] | 338 | ifa->ifa_flags &= ~IFA_F_DEPRECATED;
|
---|
[2725] | 339 | printf("deprecated ");
|
---|
[821] | 340 | }
|
---|
[2725] | 341 | if (!(ifa->ifa_flags & IFA_F_PERMANENT)) {
|
---|
| 342 | printf("dynamic ");
|
---|
[821] | 343 | } else
|
---|
| 344 | ifa->ifa_flags &= ~IFA_F_PERMANENT;
|
---|
| 345 | if (ifa->ifa_flags)
|
---|
[2725] | 346 | printf("flags %02x ", ifa->ifa_flags);
|
---|
[821] | 347 | if (rta_tb[IFA_LABEL])
|
---|
[2725] | 348 | fputs((char*)RTA_DATA(rta_tb[IFA_LABEL]), stdout);
|
---|
[821] | 349 | if (rta_tb[IFA_CACHEINFO]) {
|
---|
| 350 | struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
|
---|
| 351 | char buf[128];
|
---|
[2725] | 352 | bb_putchar(_SL_);
|
---|
[821] | 353 | if (ci->ifa_valid == 0xFFFFFFFFU)
|
---|
| 354 | sprintf(buf, "valid_lft forever");
|
---|
| 355 | else
|
---|
| 356 | sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
|
---|
| 357 | if (ci->ifa_prefered == 0xFFFFFFFFU)
|
---|
| 358 | sprintf(buf+strlen(buf), " preferred_lft forever");
|
---|
| 359 | else
|
---|
| 360 | sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
|
---|
[2725] | 361 | printf(" %s", buf);
|
---|
[821] | 362 | }
|
---|
[2725] | 363 | bb_putchar('\n');
|
---|
| 364 | /*fflush_all();*/
|
---|
[821] | 365 | return 0;
|
---|
| 366 | }
|
---|
| 367 |
|
---|
| 368 |
|
---|
[2725] | 369 | struct nlmsg_list {
|
---|
[821] | 370 | struct nlmsg_list *next;
|
---|
[2725] | 371 | struct nlmsghdr h;
|
---|
[821] | 372 | };
|
---|
| 373 |
|
---|
[2725] | 374 | static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo)
|
---|
[821] | 375 | {
|
---|
[1765] | 376 | for (; ainfo; ainfo = ainfo->next) {
|
---|
[821] | 377 | struct nlmsghdr *n = &ainfo->h;
|
---|
| 378 | struct ifaddrmsg *ifa = NLMSG_DATA(n);
|
---|
| 379 |
|
---|
| 380 | if (n->nlmsg_type != RTM_NEWADDR)
|
---|
| 381 | continue;
|
---|
| 382 | if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
|
---|
| 383 | return -1;
|
---|
[2725] | 384 | if (ifa->ifa_index != ifindex
|
---|
| 385 | || (G_filter.family && G_filter.family != ifa->ifa_family)
|
---|
| 386 | ) {
|
---|
[821] | 387 | continue;
|
---|
[2725] | 388 | }
|
---|
| 389 | print_addrinfo(NULL, n, NULL);
|
---|
[821] | 390 | }
|
---|
| 391 | return 0;
|
---|
| 392 | }
|
---|
| 393 |
|
---|
| 394 |
|
---|
[2725] | 395 | static int FAST_FUNC store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
|
---|
[821] | 396 | {
|
---|
| 397 | struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
|
---|
| 398 | struct nlmsg_list *h;
|
---|
| 399 | struct nlmsg_list **lp;
|
---|
| 400 |
|
---|
[2725] | 401 | h = xzalloc(n->nlmsg_len + sizeof(void*));
|
---|
[821] | 402 |
|
---|
| 403 | memcpy(&h->h, n, n->nlmsg_len);
|
---|
[2725] | 404 | /*h->next = NULL; - xzalloc did it */
|
---|
[821] | 405 |
|
---|
[2725] | 406 | for (lp = linfo; *lp; lp = &(*lp)->next)
|
---|
| 407 | continue;
|
---|
[821] | 408 | *lp = h;
|
---|
| 409 |
|
---|
| 410 | ll_remember_index(who, n, NULL);
|
---|
| 411 | return 0;
|
---|
| 412 | }
|
---|
| 413 |
|
---|
| 414 | static void ipaddr_reset_filter(int _oneline)
|
---|
| 415 | {
|
---|
[2725] | 416 | memset(&G_filter, 0, sizeof(G_filter));
|
---|
| 417 | G_filter.oneline = _oneline;
|
---|
[821] | 418 | }
|
---|
| 419 |
|
---|
[1765] | 420 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
[2725] | 421 | int FAST_FUNC ipaddr_list_or_flush(char **argv, int flush)
|
---|
[821] | 422 | {
|
---|
[1765] | 423 | static const char option[] ALIGN1 = "to\0""scope\0""up\0""label\0""dev\0";
|
---|
[821] | 424 |
|
---|
| 425 | struct nlmsg_list *linfo = NULL;
|
---|
| 426 | struct nlmsg_list *ainfo = NULL;
|
---|
| 427 | struct nlmsg_list *l;
|
---|
| 428 | struct rtnl_handle rth;
|
---|
| 429 | char *filter_dev = NULL;
|
---|
| 430 | int no_link = 0;
|
---|
| 431 |
|
---|
| 432 | ipaddr_reset_filter(oneline);
|
---|
[2725] | 433 | G_filter.showqueue = 1;
|
---|
[821] | 434 |
|
---|
[2725] | 435 | if (G_filter.family == AF_UNSPEC)
|
---|
| 436 | G_filter.family = preferred_family;
|
---|
[821] | 437 |
|
---|
| 438 | if (flush) {
|
---|
[2725] | 439 | if (!*argv) {
|
---|
[1765] | 440 | bb_error_msg_and_die(bb_msg_requires_arg, "flush");
|
---|
[821] | 441 | }
|
---|
[2725] | 442 | if (G_filter.family == AF_PACKET) {
|
---|
| 443 | bb_error_msg_and_die("can't flush link addresses");
|
---|
[821] | 444 | }
|
---|
| 445 | }
|
---|
| 446 |
|
---|
[2725] | 447 | while (*argv) {
|
---|
| 448 | const smalluint key = index_in_strings(option, *argv);
|
---|
| 449 | if (key == 0) { /* to */
|
---|
| 450 | NEXT_ARG();
|
---|
| 451 | get_prefix(&G_filter.pfx, *argv, G_filter.family);
|
---|
| 452 | if (G_filter.family == AF_UNSPEC) {
|
---|
| 453 | G_filter.family = G_filter.pfx.family;
|
---|
| 454 | }
|
---|
| 455 | } else if (key == 1) { /* scope */
|
---|
| 456 | uint32_t scope = 0;
|
---|
| 457 | NEXT_ARG();
|
---|
| 458 | G_filter.scopemask = -1;
|
---|
| 459 | if (rtnl_rtscope_a2n(&scope, *argv)) {
|
---|
| 460 | if (strcmp(*argv, "all") != 0) {
|
---|
| 461 | invarg(*argv, "scope");
|
---|
[821] | 462 | }
|
---|
[2725] | 463 | scope = RT_SCOPE_NOWHERE;
|
---|
| 464 | G_filter.scopemask = 0;
|
---|
[821] | 465 | }
|
---|
[2725] | 466 | G_filter.scope = scope;
|
---|
| 467 | } else if (key == 2) { /* up */
|
---|
| 468 | G_filter.up = 1;
|
---|
| 469 | } else if (key == 3) { /* label */
|
---|
| 470 | NEXT_ARG();
|
---|
| 471 | G_filter.label = *argv;
|
---|
| 472 | } else {
|
---|
| 473 | if (key == 4) /* dev */
|
---|
[821] | 474 | NEXT_ARG();
|
---|
[2725] | 475 | if (filter_dev)
|
---|
| 476 | duparg2("dev", *argv);
|
---|
| 477 | filter_dev = *argv;
|
---|
[821] | 478 | }
|
---|
| 479 | argv++;
|
---|
| 480 | }
|
---|
| 481 |
|
---|
[1765] | 482 | xrtnl_open(&rth);
|
---|
[821] | 483 |
|
---|
[1765] | 484 | xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK);
|
---|
| 485 | xrtnl_dump_filter(&rth, store_nlmsg, &linfo);
|
---|
[821] | 486 |
|
---|
| 487 | if (filter_dev) {
|
---|
[2725] | 488 | G_filter.ifindex = xll_name_to_index(filter_dev);
|
---|
[821] | 489 | }
|
---|
| 490 |
|
---|
| 491 | if (flush) {
|
---|
| 492 | char flushb[4096-512];
|
---|
| 493 |
|
---|
[2725] | 494 | G_filter.flushb = flushb;
|
---|
| 495 | G_filter.flushp = 0;
|
---|
| 496 | G_filter.flushe = sizeof(flushb);
|
---|
| 497 | G_filter.rth = &rth;
|
---|
[821] | 498 |
|
---|
| 499 | for (;;) {
|
---|
[2725] | 500 | xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
|
---|
| 501 | G_filter.flushed = 0;
|
---|
| 502 | xrtnl_dump_filter(&rth, print_addrinfo, NULL);
|
---|
| 503 | if (G_filter.flushed == 0) {
|
---|
[821] | 504 | return 0;
|
---|
| 505 | }
|
---|
[2725] | 506 | if (flush_update() < 0) {
|
---|
[1765] | 507 | return 1;
|
---|
[2725] | 508 | }
|
---|
[821] | 509 | }
|
---|
| 510 | }
|
---|
| 511 |
|
---|
[2725] | 512 | if (G_filter.family != AF_PACKET) {
|
---|
| 513 | xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
|
---|
[1765] | 514 | xrtnl_dump_filter(&rth, store_nlmsg, &ainfo);
|
---|
[821] | 515 | }
|
---|
| 516 |
|
---|
| 517 |
|
---|
[2725] | 518 | if (G_filter.family && G_filter.family != AF_PACKET) {
|
---|
[821] | 519 | struct nlmsg_list **lp;
|
---|
[2725] | 520 | lp = &linfo;
|
---|
[821] | 521 |
|
---|
[2725] | 522 | if (G_filter.oneline)
|
---|
[821] | 523 | no_link = 1;
|
---|
| 524 |
|
---|
[2725] | 525 | while ((l = *lp) != NULL) {
|
---|
[821] | 526 | int ok = 0;
|
---|
| 527 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
|
---|
| 528 | struct nlmsg_list *a;
|
---|
| 529 |
|
---|
[2725] | 530 | for (a = ainfo; a; a = a->next) {
|
---|
[821] | 531 | struct nlmsghdr *n = &a->h;
|
---|
| 532 | struct ifaddrmsg *ifa = NLMSG_DATA(n);
|
---|
| 533 |
|
---|
[2725] | 534 | if (ifa->ifa_index != ifi->ifi_index
|
---|
| 535 | || (G_filter.family && G_filter.family != ifa->ifa_family)
|
---|
| 536 | ) {
|
---|
[821] | 537 | continue;
|
---|
[2725] | 538 | }
|
---|
| 539 | if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
|
---|
[821] | 540 | continue;
|
---|
[2725] | 541 | if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
|
---|
[821] | 542 | continue;
|
---|
[2725] | 543 | if (G_filter.pfx.family || G_filter.label) {
|
---|
[821] | 544 | struct rtattr *tb[IFA_MAX+1];
|
---|
| 545 | memset(tb, 0, sizeof(tb));
|
---|
| 546 | parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
|
---|
| 547 | if (!tb[IFA_LOCAL])
|
---|
| 548 | tb[IFA_LOCAL] = tb[IFA_ADDRESS];
|
---|
| 549 |
|
---|
[2725] | 550 | if (G_filter.pfx.family && tb[IFA_LOCAL]) {
|
---|
[821] | 551 | inet_prefix dst;
|
---|
| 552 | memset(&dst, 0, sizeof(dst));
|
---|
| 553 | dst.family = ifa->ifa_family;
|
---|
| 554 | memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
|
---|
[2725] | 555 | if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
|
---|
[821] | 556 | continue;
|
---|
| 557 | }
|
---|
[2725] | 558 | if (G_filter.label) {
|
---|
[821] | 559 | SPRINT_BUF(b1);
|
---|
| 560 | const char *label;
|
---|
| 561 | if (tb[IFA_LABEL])
|
---|
| 562 | label = RTA_DATA(tb[IFA_LABEL]);
|
---|
| 563 | else
|
---|
| 564 | label = ll_idx_n2a(ifa->ifa_index, b1);
|
---|
[2725] | 565 | if (fnmatch(G_filter.label, label, 0) != 0)
|
---|
[821] | 566 | continue;
|
---|
| 567 | }
|
---|
| 568 | }
|
---|
| 569 |
|
---|
| 570 | ok = 1;
|
---|
| 571 | break;
|
---|
| 572 | }
|
---|
| 573 | if (!ok)
|
---|
| 574 | *lp = l->next;
|
---|
| 575 | else
|
---|
| 576 | lp = &l->next;
|
---|
| 577 | }
|
---|
| 578 | }
|
---|
| 579 |
|
---|
[1765] | 580 | for (l = linfo; l; l = l->next) {
|
---|
[2725] | 581 | if (no_link || print_linkinfo(&l->h) == 0) {
|
---|
[821] | 582 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
|
---|
[2725] | 583 | if (G_filter.family != AF_PACKET)
|
---|
| 584 | print_selected_addrinfo(ifi->ifi_index, ainfo);
|
---|
[821] | 585 | }
|
---|
| 586 | }
|
---|
| 587 |
|
---|
[1765] | 588 | return 0;
|
---|
[821] | 589 | }
|
---|
| 590 |
|
---|
| 591 | static int default_scope(inet_prefix *lcl)
|
---|
| 592 | {
|
---|
| 593 | if (lcl->family == AF_INET) {
|
---|
[1765] | 594 | if (lcl->bytelen >= 1 && *(uint8_t*)&lcl->data == 127)
|
---|
[821] | 595 | return RT_SCOPE_HOST;
|
---|
| 596 | }
|
---|
| 597 | return 0;
|
---|
| 598 | }
|
---|
| 599 |
|
---|
[1765] | 600 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
[2725] | 601 | static int ipaddr_modify(int cmd, char **argv)
|
---|
[821] | 602 | {
|
---|
[1765] | 603 | static const char option[] ALIGN1 =
|
---|
| 604 | "peer\0""remote\0""broadcast\0""brd\0"
|
---|
| 605 | "anycast\0""scope\0""dev\0""label\0""local\0";
|
---|
[821] | 606 | struct rtnl_handle rth;
|
---|
| 607 | struct {
|
---|
[1765] | 608 | struct nlmsghdr n;
|
---|
| 609 | struct ifaddrmsg ifa;
|
---|
| 610 | char buf[256];
|
---|
[821] | 611 | } req;
|
---|
[1765] | 612 | char *d = NULL;
|
---|
| 613 | char *l = NULL;
|
---|
[821] | 614 | inet_prefix lcl;
|
---|
| 615 | inet_prefix peer;
|
---|
| 616 | int local_len = 0;
|
---|
| 617 | int peer_len = 0;
|
---|
| 618 | int brd_len = 0;
|
---|
| 619 | int any_len = 0;
|
---|
[1765] | 620 | bool scoped = 0;
|
---|
[821] | 621 |
|
---|
| 622 | memset(&req, 0, sizeof(req));
|
---|
| 623 |
|
---|
| 624 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
|
---|
| 625 | req.n.nlmsg_flags = NLM_F_REQUEST;
|
---|
| 626 | req.n.nlmsg_type = cmd;
|
---|
| 627 | req.ifa.ifa_family = preferred_family;
|
---|
| 628 |
|
---|
[2725] | 629 | while (*argv) {
|
---|
| 630 | const smalluint arg = index_in_strings(option, *argv);
|
---|
| 631 | if (arg <= 1) { /* peer, remote */
|
---|
| 632 | NEXT_ARG();
|
---|
[821] | 633 |
|
---|
[2725] | 634 | if (peer_len) {
|
---|
| 635 | duparg("peer", *argv);
|
---|
[821] | 636 | }
|
---|
[2725] | 637 | get_prefix(&peer, *argv, req.ifa.ifa_family);
|
---|
| 638 | peer_len = peer.bytelen;
|
---|
| 639 | if (req.ifa.ifa_family == AF_UNSPEC) {
|
---|
| 640 | req.ifa.ifa_family = peer.family;
|
---|
| 641 | }
|
---|
| 642 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
|
---|
| 643 | req.ifa.ifa_prefixlen = peer.bitlen;
|
---|
| 644 | } else if (arg <= 3) { /* broadcast, brd */
|
---|
| 645 | inet_prefix addr;
|
---|
| 646 | NEXT_ARG();
|
---|
| 647 | if (brd_len) {
|
---|
| 648 | duparg("broadcast", *argv);
|
---|
| 649 | }
|
---|
| 650 | if (LONE_CHAR(*argv, '+')) {
|
---|
| 651 | brd_len = -1;
|
---|
| 652 | } else if (LONE_DASH(*argv)) {
|
---|
| 653 | brd_len = -2;
|
---|
| 654 | } else {
|
---|
[821] | 655 | get_addr(&addr, *argv, req.ifa.ifa_family);
|
---|
[2725] | 656 | if (req.ifa.ifa_family == AF_UNSPEC)
|
---|
[821] | 657 | req.ifa.ifa_family = addr.family;
|
---|
[2725] | 658 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
|
---|
| 659 | brd_len = addr.bytelen;
|
---|
[821] | 660 | }
|
---|
[2725] | 661 | } else if (arg == 4) { /* anycast */
|
---|
| 662 | inet_prefix addr;
|
---|
| 663 | NEXT_ARG();
|
---|
| 664 | if (any_len) {
|
---|
| 665 | duparg("anycast", *argv);
|
---|
| 666 | }
|
---|
| 667 | get_addr(&addr, *argv, req.ifa.ifa_family);
|
---|
| 668 | if (req.ifa.ifa_family == AF_UNSPEC) {
|
---|
| 669 | req.ifa.ifa_family = addr.family;
|
---|
| 670 | }
|
---|
| 671 | addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
|
---|
| 672 | any_len = addr.bytelen;
|
---|
| 673 | } else if (arg == 5) { /* scope */
|
---|
| 674 | uint32_t scope = 0;
|
---|
| 675 | NEXT_ARG();
|
---|
| 676 | if (rtnl_rtscope_a2n(&scope, *argv)) {
|
---|
| 677 | invarg(*argv, "scope");
|
---|
| 678 | }
|
---|
| 679 | req.ifa.ifa_scope = scope;
|
---|
| 680 | scoped = 1;
|
---|
| 681 | } else if (arg == 6) { /* dev */
|
---|
| 682 | NEXT_ARG();
|
---|
| 683 | d = *argv;
|
---|
| 684 | } else if (arg == 7) { /* label */
|
---|
| 685 | NEXT_ARG();
|
---|
| 686 | l = *argv;
|
---|
| 687 | addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l) + 1);
|
---|
| 688 | } else {
|
---|
| 689 | if (arg == 8) /* local */
|
---|
[821] | 690 | NEXT_ARG();
|
---|
[2725] | 691 | if (local_len) {
|
---|
| 692 | duparg2("local", *argv);
|
---|
[821] | 693 | }
|
---|
[2725] | 694 | get_prefix(&lcl, *argv, req.ifa.ifa_family);
|
---|
| 695 | if (req.ifa.ifa_family == AF_UNSPEC) {
|
---|
| 696 | req.ifa.ifa_family = lcl.family;
|
---|
| 697 | }
|
---|
| 698 | addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
|
---|
| 699 | local_len = lcl.bytelen;
|
---|
[821] | 700 | }
|
---|
| 701 | argv++;
|
---|
| 702 | }
|
---|
| 703 |
|
---|
[2725] | 704 | if (!d) {
|
---|
| 705 | /* There was no "dev IFACE", but we need that */
|
---|
| 706 | bb_error_msg_and_die("need \"dev IFACE\"");
|
---|
[821] | 707 | }
|
---|
[1765] | 708 | if (l && strncmp(d, l, strlen(d)) != 0) {
|
---|
[821] | 709 | bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l);
|
---|
| 710 | }
|
---|
| 711 |
|
---|
| 712 | if (peer_len == 0 && local_len && cmd != RTM_DELADDR) {
|
---|
| 713 | peer = lcl;
|
---|
| 714 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
|
---|
| 715 | }
|
---|
| 716 | if (req.ifa.ifa_prefixlen == 0)
|
---|
| 717 | req.ifa.ifa_prefixlen = lcl.bitlen;
|
---|
| 718 |
|
---|
| 719 | if (brd_len < 0 && cmd != RTM_DELADDR) {
|
---|
| 720 | inet_prefix brd;
|
---|
| 721 | int i;
|
---|
| 722 | if (req.ifa.ifa_family != AF_INET) {
|
---|
[1765] | 723 | bb_error_msg_and_die("broadcast can be set only for IPv4 addresses");
|
---|
[821] | 724 | }
|
---|
| 725 | brd = peer;
|
---|
| 726 | if (brd.bitlen <= 30) {
|
---|
| 727 | for (i=31; i>=brd.bitlen; i--) {
|
---|
| 728 | if (brd_len == -1)
|
---|
| 729 | brd.data[0] |= htonl(1<<(31-i));
|
---|
| 730 | else
|
---|
| 731 | brd.data[0] &= ~htonl(1<<(31-i));
|
---|
| 732 | }
|
---|
| 733 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
|
---|
| 734 | brd_len = brd.bytelen;
|
---|
| 735 | }
|
---|
| 736 | }
|
---|
| 737 | if (!scoped && cmd != RTM_DELADDR)
|
---|
| 738 | req.ifa.ifa_scope = default_scope(&lcl);
|
---|
| 739 |
|
---|
[1765] | 740 | xrtnl_open(&rth);
|
---|
[821] | 741 |
|
---|
| 742 | ll_init_map(&rth);
|
---|
| 743 |
|
---|
[1765] | 744 | req.ifa.ifa_index = xll_name_to_index(d);
|
---|
[821] | 745 |
|
---|
| 746 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
|
---|
[1765] | 747 | return 2;
|
---|
[821] | 748 |
|
---|
[1765] | 749 | return 0;
|
---|
[821] | 750 | }
|
---|
| 751 |
|
---|
[1765] | 752 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
[2725] | 753 | int FAST_FUNC do_ipaddr(char **argv)
|
---|
[821] | 754 | {
|
---|
[1765] | 755 | static const char commands[] ALIGN1 =
|
---|
| 756 | "add\0""delete\0""list\0""show\0""lst\0""flush\0";
|
---|
[2725] | 757 | smalluint cmd = 2;
|
---|
[821] | 758 | if (*argv) {
|
---|
[2725] | 759 | cmd = index_in_substrings(commands, *argv);
|
---|
| 760 | if (cmd > 5)
|
---|
| 761 | bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
|
---|
| 762 | argv++;
|
---|
| 763 | if (cmd <= 1)
|
---|
| 764 | return ipaddr_modify((cmd == 0) ? RTM_NEWADDR : RTM_DELADDR, argv);
|
---|
[821] | 765 | }
|
---|
[2725] | 766 | /* 2 == list, 3 == show, 4 == lst */
|
---|
| 767 | return ipaddr_list_or_flush(argv, cmd == 5);
|
---|
[821] | 768 | }
|
---|