osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 1 | /* |
| 2 | * ipmonitor.c "ip monitor". |
| 3 | * |
| 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. |
| 8 | * |
| 9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <unistd.h> |
| 16 | #include <syslog.h> |
| 17 | #include <fcntl.h> |
| 18 | #include <sys/socket.h> |
| 19 | #include <netinet/in.h> |
| 20 | #include <arpa/inet.h> |
| 21 | #include <string.h> |
| 22 | #include <time.h> |
| 23 | |
| 24 | #include "utils.h" |
| 25 | #include "ip_common.h" |
| 26 | |
| 27 | static void usage(void) __attribute__((noreturn)); |
| 28 | |
| 29 | static void usage(void) |
| 30 | { |
| 31 | fprintf(stderr, "Usage: ip monitor [ all | LISTofOBJECTS ]\n"); |
| 32 | exit(-1); |
| 33 | } |
| 34 | |
| 35 | |
osdl.net!shemminger | 6dc9f01 | 2004-08-31 17:45:21 +0000 | [diff] [blame] | 36 | int accept_msg(const struct sockaddr_nl *who, |
osdl.net!shemminger | 50772dc | 2004-12-07 21:48:29 +0000 | [diff] [blame] | 37 | struct nlmsghdr *n, void *arg) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 38 | { |
| 39 | FILE *fp = (FILE*)arg; |
| 40 | |
| 41 | if (n->nlmsg_type == RTM_NEWROUTE || n->nlmsg_type == RTM_DELROUTE) { |
| 42 | print_route(who, n, arg); |
| 43 | return 0; |
| 44 | } |
| 45 | if (n->nlmsg_type == RTM_NEWLINK || n->nlmsg_type == RTM_DELLINK) { |
| 46 | ll_remember_index(who, n, NULL); |
| 47 | print_linkinfo(who, n, arg); |
| 48 | return 0; |
| 49 | } |
| 50 | if (n->nlmsg_type == RTM_NEWADDR || n->nlmsg_type == RTM_DELADDR) { |
| 51 | print_addrinfo(who, n, arg); |
| 52 | return 0; |
| 53 | } |
| 54 | if (n->nlmsg_type == RTM_NEWNEIGH || n->nlmsg_type == RTM_DELNEIGH) { |
| 55 | print_neigh(who, n, arg); |
| 56 | return 0; |
| 57 | } |
net[shemminger]!shemminger | 1cb54e5 | 2005-01-17 23:30:18 +0000 | [diff] [blame^] | 58 | if (n->nlmsg_type == RTM_NEWPREFIX) { |
| 59 | print_prefix(who, n, arg); |
| 60 | return 0; |
| 61 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 62 | if (n->nlmsg_type == 15) { |
| 63 | char *tstr; |
| 64 | time_t secs = ((__u32*)NLMSG_DATA(n))[0]; |
| 65 | long usecs = ((__u32*)NLMSG_DATA(n))[1]; |
| 66 | tstr = asctime(localtime(&secs)); |
| 67 | tstr[strlen(tstr)-1] = 0; |
| 68 | fprintf(fp, "Timestamp: %s %lu us\n", tstr, usecs); |
| 69 | return 0; |
| 70 | } |
| 71 | if (n->nlmsg_type == RTM_NEWQDISC || |
| 72 | n->nlmsg_type == RTM_DELQDISC || |
| 73 | n->nlmsg_type == RTM_NEWTCLASS || |
| 74 | n->nlmsg_type == RTM_DELTCLASS || |
| 75 | n->nlmsg_type == RTM_NEWTFILTER || |
| 76 | n->nlmsg_type == RTM_DELTFILTER) |
| 77 | return 0; |
| 78 | if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP && |
| 79 | n->nlmsg_type != NLMSG_DONE) { |
| 80 | fprintf(fp, "Unknown message: %08x %08x %08x\n", |
| 81 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); |
| 82 | } |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | int do_ipmonitor(int argc, char **argv) |
| 87 | { |
| 88 | struct rtnl_handle rth; |
| 89 | char *file = NULL; |
| 90 | unsigned groups = ~RTMGRP_TC; |
| 91 | int llink=0; |
| 92 | int laddr=0; |
| 93 | int lroute=0; |
net[shemminger]!shemminger | 1cb54e5 | 2005-01-17 23:30:18 +0000 | [diff] [blame^] | 94 | int lprefix=0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 95 | |
| 96 | ipaddr_reset_filter(1); |
| 97 | iproute_reset_filter(); |
| 98 | ipneigh_reset_filter(); |
| 99 | |
| 100 | while (argc > 0) { |
| 101 | if (matches(*argv, "file") == 0) { |
| 102 | NEXT_ARG(); |
| 103 | file = *argv; |
| 104 | } else if (matches(*argv, "link") == 0) { |
| 105 | llink=1; |
| 106 | groups = 0; |
| 107 | } else if (matches(*argv, "address") == 0) { |
| 108 | laddr=1; |
| 109 | groups = 0; |
| 110 | } else if (matches(*argv, "route") == 0) { |
| 111 | lroute=1; |
| 112 | groups = 0; |
net[shemminger]!shemminger | 1cb54e5 | 2005-01-17 23:30:18 +0000 | [diff] [blame^] | 113 | } else if (matches(*argv, "prefix") == 0) { |
| 114 | lprefix=1; |
| 115 | groups = 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 116 | } else if (strcmp(*argv, "all") == 0) { |
| 117 | groups = ~RTMGRP_TC; |
| 118 | } else if (matches(*argv, "help") == 0) { |
| 119 | usage(); |
| 120 | } else { |
| 121 | fprintf(stderr, "Argument \"%s\" is unknown, try \"ip monitor help\".\n", *argv); |
| 122 | exit(-1); |
| 123 | } |
| 124 | argc--; argv++; |
| 125 | } |
| 126 | |
| 127 | if (llink) |
| 128 | groups |= RTMGRP_LINK; |
| 129 | if (laddr) { |
| 130 | if (!preferred_family || preferred_family == AF_INET) |
| 131 | groups |= RTMGRP_IPV4_IFADDR; |
| 132 | if (!preferred_family || preferred_family == AF_INET6) |
| 133 | groups |= RTMGRP_IPV6_IFADDR; |
| 134 | } |
| 135 | if (lroute) { |
| 136 | if (!preferred_family || preferred_family == AF_INET) |
| 137 | groups |= RTMGRP_IPV4_ROUTE; |
| 138 | if (!preferred_family || preferred_family == AF_INET6) |
| 139 | groups |= RTMGRP_IPV6_ROUTE; |
| 140 | } |
net[shemminger]!shemminger | 1cb54e5 | 2005-01-17 23:30:18 +0000 | [diff] [blame^] | 141 | if (lprefix) { |
| 142 | if (!preferred_family || preferred_family == AF_INET6) |
| 143 | groups |= RTMGRP_IPV6_PREFIX; |
| 144 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 145 | |
| 146 | if (file) { |
| 147 | FILE *fp; |
| 148 | fp = fopen(file, "r"); |
| 149 | if (fp == NULL) { |
| 150 | perror("Cannot fopen"); |
| 151 | exit(-1); |
| 152 | } |
| 153 | return rtnl_from_file(fp, accept_msg, (void*)stdout); |
| 154 | } |
| 155 | |
| 156 | if (rtnl_open(&rth, groups) < 0) |
| 157 | exit(1); |
| 158 | |
| 159 | ll_init_map(&rth); |
| 160 | |
| 161 | if (rtnl_listen(&rth, accept_msg, (void*)stdout) < 0) |
| 162 | exit(2); |
| 163 | |
| 164 | exit(0); |
| 165 | } |