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>
11 * Changes: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
12 * 20010404 - use setlocale
21 #include <sys/ioctl.h>
22 #include <sys/socket.h>
23 #include <netinet/in.h>
24 #include <arpa/inet.h>
27 #if defined(__GLIBC__) && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1))
36 #include "net-support.h"
38 #include "pathnames.h"
43 /* These have nothing to do with rtnetlink. :-) */
47 char *Release
= RELEASE
,
48 *Version
= "ipmaddr 1.1",
49 *Signature
= "Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>";
51 static void version(void)
53 printf("%s\n%s\n%s\n", Release
, Version
, Signature
);
57 static void usage(void) __attribute__((noreturn
));
59 static void usage(void)
61 fprintf(stderr
, _("Usage: ipmaddr [ add | del ] MULTIADDR dev STRING\n"));
62 fprintf(stderr
, _(" ipmaddr show [ dev STRING ] [ ipv4 | ipv6 | link | all ]\n"));
63 fprintf(stderr
, _(" ipmaddr -V | -version\n"));
67 static void print_lla(FILE *fp
, int len
, unsigned char *addr
)
70 for (i
=0; i
<len
; i
++) {
72 fprintf(fp
, "%02x", addr
[i
]);
74 fprintf(fp
, ":%02x", addr
[i
]);
78 static int parse_lla(char *str
, unsigned char *addr
)
84 if (str
[0] == ':' || str
[0] == '.') {
90 if (sscanf(str
, "%02x", &tmp
) != 1)
99 static int parse_hex(char *str
, unsigned char *addr
)
107 if (sscanf(str
, "%02x", &tmp
) != 1)
118 struct ma_info
*next
;
126 void maddr_ins(struct ma_info
**lst
, struct ma_info
*m
)
130 for (; (mp
=*lst
) != NULL
; lst
= &mp
->next
) {
131 if (mp
->index
> m
->index
)
138 void read_dev_mcast(struct ma_info
**result_p
)
141 FILE *fp
= fopen(_PATH_PROCNET_DEV_MCAST
, "r");
146 while (fgets(buf
, sizeof(buf
), fp
)) {
152 memset(&m
, 0, sizeof(m
));
153 sscanf(buf
, "%d%s%d%d%s", &m
.index
, m
.name
, &m
.users
, &st
,
155 if (filter_dev
[0] && strcmp(filter_dev
, m
.name
))
158 m
.addr
.family
= AF_PACKET
;
160 len
= parse_hex(hexa
, (unsigned char*)&m
.addr
.data
);
162 struct ma_info
*ma
= malloc(sizeof(m
));
164 memcpy(ma
, &m
, sizeof(m
));
165 ma
->addr
.bytelen
= len
;
166 ma
->addr
.bitlen
= len
<<3;
168 ma
->features
= "static";
169 maddr_ins(result_p
, ma
);
175 void read_igmp(struct ma_info
**result_p
)
179 FILE *fp
= fopen(_PATH_PROCNET_IGMP
, "r");
183 memset(&m
, 0, sizeof(m
));
184 fgets(buf
, sizeof(buf
), fp
);
186 m
.addr
.family
= AF_INET
;
190 while (fgets(buf
, sizeof(buf
), fp
)) {
191 struct ma_info
*ma
= malloc(sizeof(m
));
193 if (buf
[0] != '\t') {
194 sscanf(buf
, "%d%s", &m
.index
, m
.name
);
198 if (filter_dev
[0] && strcmp(filter_dev
, m
.name
))
201 sscanf(buf
, "%08x%d", (__u32
*)&m
.addr
.data
, &m
.users
);
203 ma
= malloc(sizeof(m
));
204 memcpy(ma
, &m
, sizeof(m
));
205 maddr_ins(result_p
, ma
);
211 void read_igmp6(struct ma_info
**result_p
)
214 FILE *fp
= fopen(_PATH_PROCNET_IGMP6
, "r");
219 while (fgets(buf
, sizeof(buf
), fp
)) {
224 memset(&m
, 0, sizeof(m
));
225 sscanf(buf
, "%d%s%s%d", &m
.index
, m
.name
, hexa
, &m
.users
);
227 if (filter_dev
[0] && strcmp(filter_dev
, m
.name
))
230 m
.addr
.family
= AF_INET6
;
232 len
= parse_hex(hexa
, (unsigned char*)&m
.addr
.data
);
234 struct ma_info
*ma
= malloc(sizeof(m
));
236 memcpy(ma
, &m
, sizeof(m
));
238 ma
->addr
.bytelen
= len
;
239 ma
->addr
.bitlen
= len
<<3;
240 maddr_ins(result_p
, ma
);
246 static void print_maddr(FILE *fp
, struct ma_info
*list
)
250 if (list
->addr
.family
== AF_PACKET
) {
251 fprintf(fp
, "link ");
252 print_lla(fp
, list
->addr
.bytelen
, (unsigned char*)list
->addr
.data
);
255 switch(list
->addr
.family
) {
257 fprintf(fp
, "inet ");
260 fprintf(fp
, "inet6 ");
263 fprintf(fp
, _("family %d "), list
->addr
.family
);
266 if (format_host(list
->addr
.family
, list
->addr
.data
, abuf
, sizeof(abuf
)))
267 fprintf(fp
, "%s", abuf
);
271 if (list
->users
!= 1)
272 fprintf(fp
, _(" users %d"), list
->users
);
274 fprintf(fp
, " %s", list
->features
);
278 static void print_mlist(FILE *fp
, struct ma_info
*list
)
282 for (; list
; list
= list
->next
) {
283 if (cur_index
!= list
->index
) {
284 cur_index
= list
->index
;
285 fprintf(fp
, "%d:\t%s\n", cur_index
, list
->name
);
287 print_maddr(fp
, list
);
291 static int multiaddr_list(int argc
, char **argv
)
293 struct ma_info
*list
= NULL
;
296 if (strcmp(*argv
, "dev") == 0) {
300 strcpy(filter_dev
, *argv
);
301 } else if (strcmp(*argv
, "all") == 0) {
302 filter_family
= AF_UNSPEC
;
303 } else if (strcmp(*argv
, "ipv4") == 0) {
304 filter_family
= AF_INET
;
305 } else if (strcmp(*argv
, "ipv6") == 0) {
306 filter_family
= AF_INET6
;
307 } else if (strcmp(*argv
, "link") == 0) {
308 filter_family
= AF_PACKET
;
312 strcpy(filter_dev
, *argv
);
317 if (!filter_family
|| filter_family
== AF_PACKET
)
318 read_dev_mcast(&list
);
319 if (!filter_family
|| filter_family
== AF_INET
)
321 if (!filter_family
|| filter_family
== AF_INET6
)
323 print_mlist(stdout
, list
);
327 int multiaddr_modify(int cmd
, int argc
, char **argv
)
332 memset(&ifr
, 0, sizeof(ifr
));
340 if (strcmp(*argv
, "dev") == 0) {
344 strncpy(ifr
.ifr_name
, *argv
, IFNAMSIZ
);
346 if (ifr
.ifr_hwaddr
.sa_data
[0])
348 if (parse_lla(*argv
, ifr
.ifr_hwaddr
.sa_data
) < 0)
353 if (ifr
.ifr_name
[0] == 0)
356 fd
= socket(AF_INET
, SOCK_DGRAM
, 0);
358 perror(_("Cannot create socket"));
361 if (ioctl(fd
, cmd
, (char*)&ifr
) != 0) {
371 int do_multiaddr(int argc
, char **argv
)
374 return multiaddr_list(0, NULL
);
375 if (matches(*argv
, "add") == 0)
376 return multiaddr_modify(NEWADDR
, argc
-1, argv
+1);
377 if (matches(*argv
, "delete") == 0)
378 return multiaddr_modify(DELADDR
, argc
-1, argv
+1);
379 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
380 || matches(*argv
, "lst") == 0)
381 return multiaddr_list(argc
-1, argv
+1);
385 int preferred_family
= AF_UNSPEC
;
387 int resolve_hosts
= 0;
389 int main(int argc
, char **argv
)
394 setlocale (LC_ALL
, "");
395 bindtextdomain("net-tools", "/usr/share/locale");
396 textdomain("net-tools");
399 basename
= strrchr(argv
[0], '/');
400 if (basename
== NULL
)
406 if (argv
[1][0] != '-')
408 if (matches(argv
[1], "-family") == 0) {
413 if (strcmp(argv
[1], "inet") == 0)
414 preferred_family
= AF_INET
;
415 else if (strcmp(argv
[1], "inet6") == 0)
416 preferred_family
= AF_INET6
;
419 } else if (matches(argv
[1], "-stats") == 0 ||
420 matches(argv
[1], "-statistics") == 0) {
422 } else if (matches(argv
[1], "-resolve") == 0) {
424 } else if ((matches(argv
[1], "-V") == 0) || matches(argv
[1], "--version") == 0) {
431 return do_multiaddr(argc
-1, argv
+1);