2 info.c -- Show information about a node, subnet or address
3 Copyright (C) 2012-2013 Guus Sliepen <guus@tinc-vpn.org>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "control_common.h"
30 void logger(int level, int priority, const char *format, ...) {
33 vfprintf(stderr, format, ap);
38 char *strip_weight(char *netstr) {
39 int len = strlen(netstr);
40 if(len >= 3 && !strcmp(netstr + len - 3, "#10"))
45 static int info_node(int fd, const char *item) {
46 // Check the list of nodes
47 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_NODES, item);
60 int code, req, cipher, digest, maclength, compression, distance;
61 short int pmtu, minmtu, maxmtu;
68 long int last_state_change;
70 while(recvline(fd, line, sizeof line)) {
71 int n = sscanf(line, "%d %d %s %s port %s %d %d %d %d %x %"PRIx32" %s %s %d %hd %hd %hd %ld", &code, &req, node, host, port, &cipher, &digest, &maclength, &compression, &options, &status_union.raw, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
77 fprintf(stderr, "Unable to parse node dump from tincd.\n");
81 if(!strcmp(node, item)) {
88 fprintf(stderr, "Unknown node %s.\n", item);
92 while(recvline(fd, line, sizeof line)) {
93 if(sscanf(line, "%d %d %s", &code, &req, node) == 2)
97 printf("Node: %s\n", item);
98 printf("Address: %s port %s\n", host, port);
100 char timestr[32] = "never";
101 time_t lsc_time = last_state_change;
103 if(last_state_change)
104 strftime(timestr, sizeof timestr, "%Y-%m-%d %H:%M:%S", localtime(&lsc_time));
106 status = status_union.bits;
109 printf("Online since: %s\n", timestr);
111 printf("Last seen: %s\n", timestr);
119 printf(" reachable");
124 if(status.udp_confirmed)
125 printf(" udp_confirmed");
129 if(options & OPTION_INDIRECT)
131 if(options & OPTION_TCPONLY)
133 if(options & OPTION_PMTU_DISCOVERY)
134 printf(" pmtu_discovery");
135 if(options & OPTION_CLAMP_MSS)
136 printf(" clamp_mss");
138 printf("Protocol: %d.%d\n", PROT_MAJOR, OPTION_VERSION(options));
139 printf("Reachability: ");
140 if(!strcmp(host, "MYSELF"))
141 printf("can reach itself\n");
142 else if(!status.reachable)
143 printf("unreachable\n");
144 else if(strcmp(via, item))
145 printf("indirectly via %s\n", via);
146 else if(!status.validkey)
149 printf("directly with UDP\nPMTU: %d\n", pmtu);
150 else if(!strcmp(nexthop, item))
151 printf("directly with TCP\n");
153 printf("none, forwarded via %s\n", nexthop);
157 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_EDGES, item);
158 while(recvline(fd, line, sizeof line)) {
159 int n = sscanf(line, "%d %d %s %s", &code, &req, from, to);
163 fprintf(stderr, "Unable to parse edge dump from tincd.\n%s\n", line);
166 if(!strcmp(from, item))
173 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
174 while(recvline(fd, line, sizeof line)) {
175 int n = sscanf(line, "%d %d %s %s", &code, &req, subnet, from);
179 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
182 if(!strcmp(from, item))
183 printf(" %s", strip_weight(subnet));
190 static int info_subnet(int fd, const char *item) {
191 subnet_t subnet, find;
193 if(!str2net(&find, item)) {
194 fprintf(stderr, "Could not parse subnet or address '%s'.\n", item);
198 bool address = !strchr(item, '/');
199 bool weight = strchr(item, '#');
208 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
209 while(recvline(fd, line, sizeof line)) {
210 int n = sscanf(line, "%d %d %s %s", &code, &req, netstr, owner);
214 if(n != 4 || !str2net(&subnet, netstr)) {
215 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
219 if(find.type != subnet.type)
223 if(find.weight != subnet.weight)
227 if(find.type == SUBNET_IPV4) {
229 if(maskcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, subnet.net.ipv4.prefixlength))
232 if(find.net.ipv4.prefixlength != subnet.net.ipv4.prefixlength)
234 if(memcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, sizeof subnet.net.ipv4))
237 } else if(find.type == SUBNET_IPV6) {
239 if(maskcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, subnet.net.ipv6.prefixlength))
242 if(find.net.ipv6.prefixlength != subnet.net.ipv6.prefixlength)
244 if(memcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, sizeof subnet.net.ipv6))
247 } if(find.type == SUBNET_MAC) {
248 if(memcmp(&find.net.mac.address, &subnet.net.mac.address, sizeof subnet.net.mac))
253 printf("Subnet: %s\n", strip_weight(netstr));
254 printf("Owner: %s\n", owner);
259 fprintf(stderr, "Unknown address %s.\n", item);
261 fprintf(stderr, "Unknown subnet %s.\n", item);
268 int info(int fd, const char *item) {
270 return info_node(fd, item);
271 if(strchr(item, '.') || strchr(item, ':'))
272 return info_subnet(fd, item);
274 fprintf(stderr, "Argument is not a node name, subnet or address.\n");