2 * ipmaddr.c "ip maddress".
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
18 #include <sys/ioctl.h>
19 #include <sys/socket.h>
20 #include <netinet/in.h>
21 #include <arpa/inet.h>
24 #if defined(__GLIBC__) && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1))
33 #include "net-support.h"
35 #include "pathnames.h"
40 /* These have nothing to do with rtnetlink. :-) */
44 char *Release
= RELEASE
,
45 *Version
= "ipmaddr 1.0",
46 *Signature
= "Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>";
48 static void version(void)
50 printf("%s\n%s\n%s\n", Release
, Version
, Signature
);
54 static void usage(void) __attribute__((noreturn
));
56 static void usage(void)
58 fprintf(stderr
, _("Usage: ipmaddr [ add | del ] MULTIADDR dev STRING\n"));
59 fprintf(stderr
, _(" ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ]\n"));
60 fprintf(stderr
, _(" ipmaddr -V | -version\n"));
64 static void print_lla(FILE *fp
, int len
, unsigned char *addr
)
67 for (i
=0; i
<len
; i
++) {
69 fprintf(fp
, "%02x", addr
[i
]);
71 fprintf(fp
, ":%02x", addr
[i
]);
75 static int parse_lla(char *str
, unsigned char *addr
)
81 if (str
[0] == ':' || str
[0] == '.') {
87 if (sscanf(str
, "%02x", &tmp
) != 1)
96 static int parse_hex(char *str
, unsigned char *addr
)
104 if (sscanf(str
, "%02x", &tmp
) != 1)
115 struct ma_info
*next
;
123 void maddr_ins(struct ma_info
**lst
, struct ma_info
*m
)
127 for (; (mp
=*lst
) != NULL
; lst
= &mp
->next
) {
128 if (mp
->index
> m
->index
)
135 void read_dev_mcast(struct ma_info
**result_p
)
138 FILE *fp
= fopen(_PATH_PROCNET_DEV_MCAST
, "r");
143 while (fgets(buf
, sizeof(buf
), fp
)) {
149 memset(&m
, 0, sizeof(m
));
150 sscanf(buf
, "%d%s%d%d%s", &m
.index
, m
.name
, &m
.users
, &st
,
152 if (filter_dev
[0] && strcmp(filter_dev
, m
.name
))
155 m
.addr
.family
= AF_PACKET
;
157 len
= parse_hex(hexa
, (unsigned char*)&m
.addr
.data
);
159 struct ma_info
*ma
= malloc(sizeof(m
));
161 memcpy(ma
, &m
, sizeof(m
));
162 ma
->addr
.bytelen
= len
;
163 ma
->addr
.bitlen
= len
<<3;
165 ma
->features
= "static";
166 maddr_ins(result_p
, ma
);
172 void read_igmp(struct ma_info
**result_p
)
176 FILE *fp
= fopen(_PATH_PROCNET_IGMP
, "r");
180 memset(&m
, 0, sizeof(m
));
181 fgets(buf
, sizeof(buf
), fp
);
183 m
.addr
.family
= AF_INET
;
187 while (fgets(buf
, sizeof(buf
), fp
)) {
188 struct ma_info
*ma
= malloc(sizeof(m
));
190 if (buf
[0] != '\t') {
191 sscanf(buf
, "%d%s", &m
.index
, m
.name
);
195 if (filter_dev
[0] && strcmp(filter_dev
, m
.name
))
198 sscanf(buf
, "%08x%d", (__u32
*)&m
.addr
.data
, &m
.users
);
200 ma
= malloc(sizeof(m
));
201 memcpy(ma
, &m
, sizeof(m
));
202 maddr_ins(result_p
, ma
);
208 void read_igmp6(struct ma_info
**result_p
)
211 FILE *fp
= fopen(_PATH_PROCNET_IGMP6
, "r");
216 while (fgets(buf
, sizeof(buf
), fp
)) {
221 memset(&m
, 0, sizeof(m
));
222 sscanf(buf
, "%d%s%s%d", &m
.index
, m
.name
, hexa
, &m
.users
);
224 if (filter_dev
[0] && strcmp(filter_dev
, m
.name
))
227 m
.addr
.family
= AF_INET6
;
229 len
= parse_hex(hexa
, (unsigned char*)&m
.addr
.data
);
231 struct ma_info
*ma
= malloc(sizeof(m
));
233 memcpy(ma
, &m
, sizeof(m
));
235 ma
->addr
.bytelen
= len
;
236 ma
->addr
.bitlen
= len
<<3;
237 maddr_ins(result_p
, ma
);
243 static void print_maddr(FILE *fp
, struct ma_info
*list
)
247 if (list
->addr
.family
== AF_PACKET
) {
248 fprintf(fp
, "link ");
249 print_lla(fp
, list
->addr
.bytelen
, (unsigned char*)list
->addr
.data
);
252 switch(list
->addr
.family
) {
254 fprintf(fp
, "inet ");
257 fprintf(fp
, "inet6 ");
260 fprintf(fp
, _("family %d "), list
->addr
.family
);
263 if (format_host(list
->addr
.family
, list
->addr
.data
, abuf
, sizeof(abuf
)))
264 fprintf(fp
, "%s", abuf
);
268 if (list
->users
!= 1)
269 fprintf(fp
, _(" users %d"), list
->users
);
271 fprintf(fp
, " %s", list
->features
);
275 static void print_mlist(FILE *fp
, struct ma_info
*list
)
279 for (; list
; list
= list
->next
) {
280 if (cur_index
!= list
->index
) {
281 cur_index
= list
->index
;
282 fprintf(fp
, "%d:\t%s\n", cur_index
, list
->name
);
284 print_maddr(fp
, list
);
288 static int multiaddr_list(int argc
, char **argv
)
290 struct ma_info
*list
= NULL
;
293 if (strcmp(*argv
, "dev") == 0) {
297 strcpy(filter_dev
, *argv
);
298 } else if (strcmp(*argv
, "all") == 0) {
299 filter_family
= AF_UNSPEC
;
300 } else if (strcmp(*argv
, "ipv4") == 0) {
301 filter_family
= AF_INET
;
302 } else if (strcmp(*argv
, "ipv6") == 0) {
303 filter_family
= AF_INET6
;
304 } else if (strcmp(*argv
, "link") == 0) {
305 filter_family
= AF_PACKET
;
309 strcpy(filter_dev
, *argv
);
314 if (!filter_family
|| filter_family
== AF_PACKET
)
315 read_dev_mcast(&list
);
316 if (!filter_family
|| filter_family
== AF_INET
)
318 if (!filter_family
|| filter_family
== AF_INET6
)
320 print_mlist(stdout
, list
);
324 int multiaddr_modify(int cmd
, int argc
, char **argv
)
329 memset(&ifr
, 0, sizeof(ifr
));
337 if (strcmp(*argv
, "dev") == 0) {
341 strncpy(ifr
.ifr_name
, *argv
, IFNAMSIZ
);
343 if (ifr
.ifr_hwaddr
.sa_data
[0])
345 if (parse_lla(*argv
, ifr
.ifr_hwaddr
.sa_data
) < 0)
350 if (ifr
.ifr_name
[0] == 0)
353 fd
= socket(AF_INET
, SOCK_DGRAM
, 0);
355 perror(_("Cannot create socket"));
358 if (ioctl(fd
, cmd
, (char*)&ifr
) != 0) {
368 int do_multiaddr(int argc
, char **argv
)
371 return multiaddr_list(0, NULL
);
372 if (matches(*argv
, "add") == 0)
373 return multiaddr_modify(NEWADDR
, argc
-1, argv
+1);
374 if (matches(*argv
, "delete") == 0)
375 return multiaddr_modify(DELADDR
, argc
-1, argv
+1);
376 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
377 || matches(*argv
, "lst") == 0)
378 return multiaddr_list(argc
-1, argv
+1);
382 int preferred_family
= AF_UNSPEC
;
384 int resolve_hosts
= 0;
386 int main(int argc
, char **argv
)
391 bindtextdomain("net-tools", "/usr/share/locale");
392 textdomain("net-tools");
395 basename
= strrchr(argv
[0], '/');
396 if (basename
== NULL
)
402 if (argv
[1][0] != '-')
404 if (matches(argv
[1], "-family") == 0) {
409 if (strcmp(argv
[1], "inet") == 0)
410 preferred_family
= AF_INET
;
411 else if (strcmp(argv
[1], "inet6") == 0)
412 preferred_family
= AF_INET6
;
415 } else if (matches(argv
[1], "-stats") == 0 ||
416 matches(argv
[1], "-statistics") == 0) {
418 } else if (matches(argv
[1], "-resolve") == 0) {
420 } else if ((matches(argv
[1], "-V") == 0) || matches(argv
[1], "--version") == 0) {
427 return do_multiaddr(argc
-1, argv
+1);