2 * ipmonitor.c "ip monitor".
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/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
25 #include "ip_common.h"
27 static void usage(void) __attribute__((noreturn));
29 static void usage(void)
31 fprintf(stderr, "Usage: ip monitor [ all | LISTofOBJECTS ]\n");
36 int accept_msg(const struct sockaddr_nl *who,
37 struct nlmsghdr *n, void *arg)
39 FILE *fp = (FILE*)arg;
44 if (n->nlmsg_type == RTM_NEWROUTE || n->nlmsg_type == RTM_DELROUTE) {
45 print_route(who, n, arg);
48 if (n->nlmsg_type == RTM_NEWLINK || n->nlmsg_type == RTM_DELLINK) {
49 ll_remember_index(who, n, NULL);
50 print_linkinfo(who, n, arg);
53 if (n->nlmsg_type == RTM_NEWADDR || n->nlmsg_type == RTM_DELADDR) {
54 print_addrinfo(who, n, arg);
57 if (n->nlmsg_type == RTM_NEWADDRLABEL || n->nlmsg_type == RTM_DELADDRLABEL) {
58 print_addrlabel(who, n, arg);
61 if (n->nlmsg_type == RTM_NEWNEIGH || n->nlmsg_type == RTM_DELNEIGH) {
62 print_neigh(who, n, arg);
65 if (n->nlmsg_type == RTM_NEWPREFIX) {
66 print_prefix(who, n, arg);
69 if (n->nlmsg_type == RTM_NEWRULE || n->nlmsg_type == RTM_DELRULE) {
70 print_rule(who, n, arg);
73 if (n->nlmsg_type == 15) {
75 time_t secs = ((__u32*)NLMSG_DATA(n))[0];
76 long usecs = ((__u32*)NLMSG_DATA(n))[1];
77 tstr = asctime(localtime(&secs));
78 tstr[strlen(tstr)-1] = 0;
79 fprintf(fp, "Timestamp: %s %lu us\n", tstr, usecs);
82 if (n->nlmsg_type == RTM_NEWQDISC ||
83 n->nlmsg_type == RTM_DELQDISC ||
84 n->nlmsg_type == RTM_NEWTCLASS ||
85 n->nlmsg_type == RTM_DELTCLASS ||
86 n->nlmsg_type == RTM_NEWTFILTER ||
87 n->nlmsg_type == RTM_DELTFILTER)
89 if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP &&
90 n->nlmsg_type != NLMSG_DONE) {
91 fprintf(fp, "Unknown message: %08x %08x %08x\n",
92 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
97 int do_ipmonitor(int argc, char **argv)
100 unsigned groups = ~RTMGRP_TC;
107 ipaddr_reset_filter(1);
108 iproute_reset_filter();
109 ipneigh_reset_filter();
112 if (matches(*argv, "file") == 0) {
115 } else if (matches(*argv, "link") == 0) {
118 } else if (matches(*argv, "address") == 0) {
121 } else if (matches(*argv, "route") == 0) {
124 } else if (matches(*argv, "prefix") == 0) {
127 } else if (strcmp(*argv, "all") == 0) {
129 } else if (matches(*argv, "help") == 0) {
132 fprintf(stderr, "Argument \"%s\" is unknown, try \"ip monitor help\".\n", *argv);
139 groups |= nl_mgrp(RTNLGRP_LINK);
141 if (!preferred_family || preferred_family == AF_INET)
142 groups |= nl_mgrp(RTNLGRP_IPV4_IFADDR);
143 if (!preferred_family || preferred_family == AF_INET6)
144 groups |= nl_mgrp(RTNLGRP_IPV6_IFADDR);
147 if (!preferred_family || preferred_family == AF_INET)
148 groups |= nl_mgrp(RTNLGRP_IPV4_ROUTE);
149 if (!preferred_family || preferred_family == AF_INET6)
150 groups |= nl_mgrp(RTNLGRP_IPV6_ROUTE);
153 if (!preferred_family || preferred_family == AF_INET6)
154 groups |= nl_mgrp(RTNLGRP_IPV6_PREFIX);
159 fp = fopen(file, "r");
161 perror("Cannot fopen");
164 return rtnl_from_file(fp, accept_msg, stdout);
167 if (rtnl_open(&rth, groups) < 0)
171 if (rtnl_listen(&rth, accept_msg, stdout) < 0)