+++ /dev/null
-/*
- * ipmaddr.c "ip maddress".
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <string.h>
-
-#include <linux/netdevice.h>
-#include <linux/if.h>
-#include <linux/if_arp.h>
-#include <linux/sockios.h>
-
-#include "rt_names.h"
-#include "utils.h"
-
-static struct {
- char *dev;
- int family;
-} filter;
-
-static void usage(void) __attribute__((noreturn));
-
-static void usage(void)
-{
- fprintf(stderr, "Usage: ip maddr [ add | del ] MULTIADDR dev STRING\n");
- fprintf(stderr, " ip maddr show [ dev STRING ]\n");
- exit(-1);
-}
-
-static int parse_hex(char *str, unsigned char *addr)
-{
- int len=0;
-
- while (*str) {
- int tmp;
- if (str[1] == 0)
- return -1;
- if (sscanf(str, "%02x", &tmp) != 1)
- return -1;
- addr[len] = tmp;
- len++;
- str += 2;
- }
- return len;
-}
-
-struct ma_info
-{
- struct ma_info *next;
- int index;
- int users;
- char *features;
- char name[IFNAMSIZ];
- inet_prefix addr;
-};
-
-void maddr_ins(struct ma_info **lst, struct ma_info *m)
-{
- struct ma_info *mp;
-
- for (; (mp=*lst) != NULL; lst = &mp->next) {
- if (mp->index > m->index)
- break;
- }
- m->next = *lst;
- *lst = m;
-}
-
-void read_dev_mcast(struct ma_info **result_p)
-{
- char buf[256];
- FILE *fp = fopen("/proc/net/dev_mcast", "r");
-
- if (!fp)
- return;
-
- while (fgets(buf, sizeof(buf), fp)) {
- char hexa[256];
- struct ma_info m;
- int len;
- int st;
-
- memset(&m, 0, sizeof(m));
- sscanf(buf, "%d%s%d%d%s", &m.index, m.name, &m.users, &st,
- hexa);
- if (filter.dev && strcmp(filter.dev, m.name))
- continue;
-
- m.addr.family = AF_PACKET;
-
- len = parse_hex(hexa, (unsigned char*)&m.addr.data);
- if (len >= 0) {
- struct ma_info *ma = malloc(sizeof(m));
-
- memcpy(ma, &m, sizeof(m));
- ma->addr.bytelen = len;
- ma->addr.bitlen = len<<3;
- if (st)
- ma->features = "static";
- maddr_ins(result_p, ma);
- }
- }
- fclose(fp);
-}
-
-void read_igmp(struct ma_info **result_p)
-{
- struct ma_info m;
- char buf[256];
- FILE *fp = fopen("/proc/net/igmp", "r");
-
- if (!fp)
- return;
- memset(&m, 0, sizeof(m));
- fgets(buf, sizeof(buf), fp);
-
- m.addr.family = AF_INET;
- m.addr.bitlen = 32;
- m.addr.bytelen = 4;
-
- while (fgets(buf, sizeof(buf), fp)) {
- struct ma_info *ma = malloc(sizeof(m));
-
- if (buf[0] != '\t') {
- sscanf(buf, "%d%s", &m.index, m.name);
- continue;
- }
-
- if (filter.dev && strcmp(filter.dev, m.name))
- continue;
-
- sscanf(buf, "%08x%d", (__u32*)&m.addr.data, &m.users);
-
- ma = malloc(sizeof(m));
- memcpy(ma, &m, sizeof(m));
- maddr_ins(result_p, ma);
- }
- fclose(fp);
-}
-
-
-void read_igmp6(struct ma_info **result_p)
-{
- char buf[256];
- FILE *fp = fopen("/proc/net/igmp6", "r");
-
- if (!fp)
- return;
-
- while (fgets(buf, sizeof(buf), fp)) {
- char hexa[256];
- struct ma_info m;
- int len;
-
- memset(&m, 0, sizeof(m));
- sscanf(buf, "%d%s%s%d", &m.index, m.name, hexa, &m.users);
-
- if (filter.dev && strcmp(filter.dev, m.name))
- continue;
-
- m.addr.family = AF_INET6;
-
- len = parse_hex(hexa, (unsigned char*)&m.addr.data);
- if (len >= 0) {
- struct ma_info *ma = malloc(sizeof(m));
-
- memcpy(ma, &m, sizeof(m));
-
- ma->addr.bytelen = len;
- ma->addr.bitlen = len<<3;
- maddr_ins(result_p, ma);
- }
- }
- fclose(fp);
-}
-
-static void print_maddr(FILE *fp, struct ma_info *list)
-{
- fprintf(fp, "\t");
-
- if (list->addr.family == AF_PACKET) {
- SPRINT_BUF(b1);
- fprintf(fp, "link %s", ll_addr_n2a((unsigned char*)list->addr.data,
- list->addr.bytelen, 0,
- b1, sizeof(b1)));
- } else {
- char abuf[256];
- switch(list->addr.family) {
- case AF_INET:
- fprintf(fp, "inet ");
- break;
- case AF_INET6:
- fprintf(fp, "inet6 ");
- break;
- default:
- fprintf(fp, "family %d ", list->addr.family);
- break;
- }
- fprintf(fp, "%s",
- format_host(list->addr.family,
- -1,
- list->addr.data,
- abuf, sizeof(abuf)));
- }
- if (list->users != 1)
- fprintf(fp, " users %d", list->users);
- if (list->features)
- fprintf(fp, " %s", list->features);
- fprintf(fp, "\n");
-}
-
-static void print_mlist(FILE *fp, struct ma_info *list)
-{
- int cur_index = 0;
-
- for (; list; list = list->next) {
- if (oneline) {
- cur_index = list->index;
- fprintf(fp, "%d:\t%s%s", cur_index, list->name, _SL_);
- } else if (cur_index != list->index) {
- cur_index = list->index;
- fprintf(fp, "%d:\t%s\n", cur_index, list->name);
- }
- print_maddr(fp, list);
- }
-}
-
-static int multiaddr_list(int argc, char **argv)
-{
- struct ma_info *list = NULL;
-
- if (!filter.family)
- filter.family = preferred_family;
-
- while (argc > 0) {
- if (1) {
- if (strcmp(*argv, "dev") == 0) {
- NEXT_ARG();
- }
- if (matches(*argv, "help") == 0)
- usage();
- if (filter.dev)
- duparg2("dev", *argv);
- filter.dev = *argv;
- }
- argv++; argc--;
- }
-
- if (!filter.family || filter.family == AF_PACKET)
- read_dev_mcast(&list);
- if (!filter.family || filter.family == AF_INET)
- read_igmp(&list);
- if (!filter.family || filter.family == AF_INET6)
- read_igmp6(&list);
- print_mlist(stdout, list);
- return 0;
-}
-
-int multiaddr_modify(int cmd, int argc, char **argv)
-{
- struct ifreq ifr;
- int fd;
-
- memset(&ifr, 0, sizeof(ifr));
-
- if (cmd == RTM_NEWADDR)
- cmd = SIOCADDMULTI;
- else
- cmd = SIOCDELMULTI;
-
- while (argc > 0) {
- if (strcmp(*argv, "dev") == 0) {
- NEXT_ARG();
- if (ifr.ifr_name[0])
- duparg("dev", *argv);
- strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
- } else {
- if (matches(*argv, "address") == 0) {
- NEXT_ARG();
- }
- if (matches(*argv, "help") == 0)
- usage();
- if (ifr.ifr_hwaddr.sa_data[0])
- duparg("address", *argv);
- if (ll_addr_a2n(ifr.ifr_hwaddr.sa_data,
- 14, *argv) < 0) {
- fprintf(stderr, "Error: \"%s\" is not a legal ll address.\n", *argv);
- exit(1);
- }
- }
- argc--; argv++;
- }
- if (ifr.ifr_name[0] == 0) {
- fprintf(stderr, "Not enough information: \"dev\" is required.\n");
- exit(-1);
- }
-
- fd = socket(AF_INET, SOCK_DGRAM, 0);
- if (fd < 0) {
- perror("Cannot create socket");
- exit(1);
- }
- if (ioctl(fd, cmd, (char*)&ifr) != 0) {
- perror("ioctl");
- exit(1);
- }
- close(fd);
-
- exit(0);
-}
-
-
-int do_multiaddr(int argc, char **argv)
-{
- if (argc < 1)
- return multiaddr_list(0, NULL);
- if (matches(*argv, "add") == 0)
- return multiaddr_modify(RTM_NEWADDR, argc-1, argv+1);
- if (matches(*argv, "delete") == 0)
- return multiaddr_modify(RTM_DELADDR, argc-1, argv+1);
- if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
- || matches(*argv, "lst") == 0)
- return multiaddr_list(argc-1, argv+1);
- if (matches(*argv, "help") == 0)
- usage();
- fprintf(stderr, "Command \"%s\" is unknown, try \"ip maddr help\".\n", *argv);
- exit(-1);
-}
git://git.onelab.eu / iproute2.git / blobdiff