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aba5acdf SH |
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)); | |
4b6e07d8 | 28 | int prefix_banner; |
aba5acdf SH |
29 | |
30 | static void usage(void) | |
31 | { | |
32 | fprintf(stderr, "Usage: ip monitor [ all | LISTofOBJECTS ]\n"); | |
33 | exit(-1); | |
34 | } | |
35 | ||
36 | ||
6dc9f016 | 37 | int accept_msg(const struct sockaddr_nl *who, |
50772dc5 | 38 | struct nlmsghdr *n, void *arg) |
aba5acdf SH |
39 | { |
40 | FILE *fp = (FILE*)arg; | |
41 | ||
90f93024 SH |
42 | if (timestamp) |
43 | print_timestamp(fp); | |
44 | ||
aba5acdf | 45 | if (n->nlmsg_type == RTM_NEWROUTE || n->nlmsg_type == RTM_DELROUTE) { |
4b6e07d8 VC |
46 | if (prefix_banner) |
47 | fprintf(fp, "[ROUTE]"); | |
aba5acdf SH |
48 | print_route(who, n, arg); |
49 | return 0; | |
50 | } | |
51 | if (n->nlmsg_type == RTM_NEWLINK || n->nlmsg_type == RTM_DELLINK) { | |
52 | ll_remember_index(who, n, NULL); | |
4b6e07d8 VC |
53 | if (prefix_banner) |
54 | fprintf(fp, "[LINK]"); | |
aba5acdf SH |
55 | print_linkinfo(who, n, arg); |
56 | return 0; | |
57 | } | |
58 | if (n->nlmsg_type == RTM_NEWADDR || n->nlmsg_type == RTM_DELADDR) { | |
4b6e07d8 VC |
59 | if (prefix_banner) |
60 | fprintf(fp, "[ADDR]"); | |
aba5acdf SH |
61 | print_addrinfo(who, n, arg); |
62 | return 0; | |
63 | } | |
4759758c | 64 | if (n->nlmsg_type == RTM_NEWADDRLABEL || n->nlmsg_type == RTM_DELADDRLABEL) { |
4b6e07d8 VC |
65 | if (prefix_banner) |
66 | fprintf(fp, "[ADDRLABEL]"); | |
4759758c YH |
67 | print_addrlabel(who, n, arg); |
68 | return 0; | |
69 | } | |
1556e29d DS |
70 | if (n->nlmsg_type == RTM_NEWNEIGH || n->nlmsg_type == RTM_DELNEIGH || |
71 | n->nlmsg_type == RTM_GETNEIGH) { | |
4b6e07d8 VC |
72 | if (prefix_banner) |
73 | fprintf(fp, "[NEIGH]"); | |
aba5acdf SH |
74 | print_neigh(who, n, arg); |
75 | return 0; | |
76 | } | |
1cb54e58 | 77 | if (n->nlmsg_type == RTM_NEWPREFIX) { |
4b6e07d8 VC |
78 | if (prefix_banner) |
79 | fprintf(fp, "[PREFIX]"); | |
1cb54e58 | 80 | print_prefix(who, n, arg); |
81 | return 0; | |
82 | } | |
98bde989 | 83 | if (n->nlmsg_type == RTM_NEWRULE || n->nlmsg_type == RTM_DELRULE) { |
4b6e07d8 VC |
84 | if (prefix_banner) |
85 | fprintf(fp, "[RULE]"); | |
98bde989 TG |
86 | print_rule(who, n, arg); |
87 | return 0; | |
88 | } | |
9d0efc10 ND |
89 | if (n->nlmsg_type == RTM_NEWNETCONF) { |
90 | if (prefix_banner) | |
91 | fprintf(fp, "[NETCONF]"); | |
92 | print_netconf(who, n, arg); | |
93 | return 0; | |
94 | } | |
aba5acdf SH |
95 | if (n->nlmsg_type == 15) { |
96 | char *tstr; | |
97 | time_t secs = ((__u32*)NLMSG_DATA(n))[0]; | |
98 | long usecs = ((__u32*)NLMSG_DATA(n))[1]; | |
99 | tstr = asctime(localtime(&secs)); | |
100 | tstr[strlen(tstr)-1] = 0; | |
101 | fprintf(fp, "Timestamp: %s %lu us\n", tstr, usecs); | |
102 | return 0; | |
103 | } | |
104 | if (n->nlmsg_type == RTM_NEWQDISC || | |
105 | n->nlmsg_type == RTM_DELQDISC || | |
106 | n->nlmsg_type == RTM_NEWTCLASS || | |
107 | n->nlmsg_type == RTM_DELTCLASS || | |
108 | n->nlmsg_type == RTM_NEWTFILTER || | |
109 | n->nlmsg_type == RTM_DELTFILTER) | |
110 | return 0; | |
111 | if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP && | |
112 | n->nlmsg_type != NLMSG_DONE) { | |
113 | fprintf(fp, "Unknown message: %08x %08x %08x\n", | |
114 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
119 | int do_ipmonitor(int argc, char **argv) | |
120 | { | |
aba5acdf SH |
121 | char *file = NULL; |
122 | unsigned groups = ~RTMGRP_TC; | |
123 | int llink=0; | |
124 | int laddr=0; | |
125 | int lroute=0; | |
1cb54e58 | 126 | int lprefix=0; |
fb063322 | 127 | int lneigh=0; |
9d0efc10 | 128 | int lnetconf=0; |
aba5acdf | 129 | |
fc57a9df | 130 | rtnl_close(&rth); |
aba5acdf SH |
131 | ipaddr_reset_filter(1); |
132 | iproute_reset_filter(); | |
133 | ipneigh_reset_filter(); | |
134 | ||
135 | while (argc > 0) { | |
136 | if (matches(*argv, "file") == 0) { | |
137 | NEXT_ARG(); | |
138 | file = *argv; | |
139 | } else if (matches(*argv, "link") == 0) { | |
140 | llink=1; | |
141 | groups = 0; | |
142 | } else if (matches(*argv, "address") == 0) { | |
143 | laddr=1; | |
144 | groups = 0; | |
145 | } else if (matches(*argv, "route") == 0) { | |
146 | lroute=1; | |
147 | groups = 0; | |
1cb54e58 | 148 | } else if (matches(*argv, "prefix") == 0) { |
149 | lprefix=1; | |
150 | groups = 0; | |
fb063322 | 151 | } else if (matches(*argv, "neigh") == 0) { |
6cdbf370 AH |
152 | lneigh = 1; |
153 | groups = 0; | |
9d0efc10 ND |
154 | } else if (matches(*argv, "netconf") == 0) { |
155 | lnetconf = 1; | |
156 | groups = 0; | |
aba5acdf SH |
157 | } else if (strcmp(*argv, "all") == 0) { |
158 | groups = ~RTMGRP_TC; | |
4b6e07d8 | 159 | prefix_banner=1; |
aba5acdf SH |
160 | } else if (matches(*argv, "help") == 0) { |
161 | usage(); | |
162 | } else { | |
163 | fprintf(stderr, "Argument \"%s\" is unknown, try \"ip monitor help\".\n", *argv); | |
164 | exit(-1); | |
165 | } | |
166 | argc--; argv++; | |
167 | } | |
168 | ||
169 | if (llink) | |
b64f58b0 | 170 | groups |= nl_mgrp(RTNLGRP_LINK); |
aba5acdf SH |
171 | if (laddr) { |
172 | if (!preferred_family || preferred_family == AF_INET) | |
b64f58b0 | 173 | groups |= nl_mgrp(RTNLGRP_IPV4_IFADDR); |
aba5acdf | 174 | if (!preferred_family || preferred_family == AF_INET6) |
b64f58b0 | 175 | groups |= nl_mgrp(RTNLGRP_IPV6_IFADDR); |
aba5acdf SH |
176 | } |
177 | if (lroute) { | |
178 | if (!preferred_family || preferred_family == AF_INET) | |
b64f58b0 | 179 | groups |= nl_mgrp(RTNLGRP_IPV4_ROUTE); |
aba5acdf | 180 | if (!preferred_family || preferred_family == AF_INET6) |
b64f58b0 | 181 | groups |= nl_mgrp(RTNLGRP_IPV6_ROUTE); |
aba5acdf | 182 | } |
1cb54e58 | 183 | if (lprefix) { |
184 | if (!preferred_family || preferred_family == AF_INET6) | |
b64f58b0 | 185 | groups |= nl_mgrp(RTNLGRP_IPV6_PREFIX); |
1cb54e58 | 186 | } |
fb063322 VC |
187 | if (lneigh) { |
188 | groups |= nl_mgrp(RTNLGRP_NEIGH); | |
189 | } | |
9d0efc10 ND |
190 | if (lnetconf) { |
191 | if (!preferred_family || preferred_family == AF_INET) | |
192 | groups |= nl_mgrp(RTNLGRP_IPV4_NETCONF); | |
193 | if (!preferred_family || preferred_family == AF_INET6) | |
194 | groups |= nl_mgrp(RTNLGRP_IPV6_NETCONF); | |
195 | } | |
aba5acdf SH |
196 | if (file) { |
197 | FILE *fp; | |
198 | fp = fopen(file, "r"); | |
199 | if (fp == NULL) { | |
200 | perror("Cannot fopen"); | |
201 | exit(-1); | |
202 | } | |
fc57a9df | 203 | return rtnl_from_file(fp, accept_msg, stdout); |
aba5acdf SH |
204 | } |
205 | ||
fc57a9df SH |
206 | if (rtnl_open(&rth, groups) < 0) |
207 | exit(1); | |
aba5acdf SH |
208 | ll_init_map(&rth); |
209 | ||
fc57a9df | 210 | if (rtnl_listen(&rth, accept_msg, stdout) < 0) |
aba5acdf SH |
211 | exit(2); |
212 | ||
351efcde | 213 | return 0; |
aba5acdf | 214 | } |