2 info.c -- Show information about a node, subnet or address
3 Copyright (C) 2012-2017 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, ...) {
36 vfprintf(stderr, format, ap);
42 char *strip_weight(char *netstr) {
43 int len = strlen(netstr);
45 if(len >= 3 && !strcmp(netstr + len - 3, "#10")) {
52 static int info_node(int fd, const char *item) {
53 // Check the list of nodes
54 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_NODES, item);
68 int code, req, cipher, digest, maclength, compression, distance;
69 short int pmtu, minmtu, maxmtu;
76 long int last_state_change;
78 uint64_t in_packets, in_bytes, out_packets, out_bytes;
80 while(recvline(fd, line, sizeof(line))) {
81 int n = sscanf(line, "%d %d %4095s %4095s %4095s port %4095s %d %d %d %d %x %"PRIx32" %4095s %4095s %d %hd %hd %hd %ld %d %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64, &code, &req, node, id, host, port, &cipher, &digest, &maclength, &compression, &options, &status_union.raw, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change, &udp_ping_rtt, &in_packets, &in_bytes, &out_packets, &out_bytes);
88 fprintf(stderr, "Unable to parse node dump from tincd.\n");
92 if(!strcmp(node, item)) {
99 fprintf(stderr, "Unknown node %s.\n", item);
103 while(recvline(fd, line, sizeof(line))) {
104 if(sscanf(line, "%d %d %4095s", &code, &req, node) == 2) {
109 printf("Node: %s\n", item);
110 printf("Node ID: %s\n", id);
111 printf("Address: %s port %s\n", host, port);
113 char timestr[32] = "never";
114 time_t lsc_time = last_state_change;
116 if(last_state_change) {
117 strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", localtime(&lsc_time));
120 status = status_union.bits;
122 if(status.reachable) {
123 printf("Online since: %s\n", timestr);
125 printf("Last seen: %s\n", timestr);
130 if(status.validkey) {
138 if(status.reachable) {
139 printf(" reachable");
142 if(status.indirect) {
150 if(status.udp_confirmed) {
151 printf(" udp_confirmed");
158 if(options & OPTION_INDIRECT) {
162 if(options & OPTION_TCPONLY) {
166 if(options & OPTION_PMTU_DISCOVERY) {
167 printf(" pmtu_discovery");
170 if(options & OPTION_CLAMP_MSS) {
171 printf(" clamp_mss");
175 printf("Protocol: %d.%d\n", PROT_MAJOR, OPTION_VERSION(options));
176 printf("Reachability: ");
178 if(!strcmp(host, "MYSELF")) {
179 printf("can reach itself\n");
180 } else if(!status.reachable) {
181 printf("unreachable\n");
182 } else if(strcmp(via, item)) {
183 printf("indirectly via %s\n", via);
184 } else if(!status.validkey) {
186 } else if(minmtu > 0) {
187 printf("directly with UDP\nPMTU: %d\n", pmtu);
189 if(udp_ping_rtt != -1) {
190 printf("RTT: %d.%03d\n", udp_ping_rtt / 1000, udp_ping_rtt % 1000);
192 } else if(!strcmp(nexthop, item)) {
193 printf("directly with TCP\n");
195 printf("none, forwarded via %s\n", nexthop);
198 printf("RX: %"PRIu64" packets %"PRIu64" bytes\n", in_packets, in_bytes);
199 printf("TX: %"PRIu64" packets %"PRIu64" bytes\n", out_packets, out_bytes);
203 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_EDGES, item);
205 while(recvline(fd, line, sizeof(line))) {
206 int n = sscanf(line, "%d %d %4095s %4095s", &code, &req, from, to);
213 fprintf(stderr, "Unable to parse edge dump from tincd.\n%s\n", line);
217 if(!strcmp(from, item)) {
226 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
228 while(recvline(fd, line, sizeof(line))) {
229 int n = sscanf(line, "%d %d %4095s %4095s", &code, &req, subnet, from);
236 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
240 if(!strcmp(from, item)) {
241 printf(" %s", strip_weight(subnet));
250 static int info_subnet(int fd, const char *item) {
251 subnet_t subnet, find;
253 if(!str2net(&find, item)) {
254 fprintf(stderr, "Could not parse subnet or address '%s'.\n", item);
258 bool address = !strchr(item, '/');
259 bool weight = strchr(item, '#');
268 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
270 while(recvline(fd, line, sizeof(line))) {
271 int n = sscanf(line, "%d %d %4095s %4095s", &code, &req, netstr, owner);
277 if(n != 4 || !str2net(&subnet, netstr)) {
278 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
282 if(find.type != subnet.type) {
287 if(find.weight != subnet.weight) {
292 if(find.type == SUBNET_IPV4) {
294 if(maskcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, subnet.net.ipv4.prefixlength)) {
298 if(find.net.ipv4.prefixlength != subnet.net.ipv4.prefixlength) {
302 if(memcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, sizeof(subnet.net.ipv4))) {
306 } else if(find.type == SUBNET_IPV6) {
308 if(maskcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, subnet.net.ipv6.prefixlength)) {
312 if(find.net.ipv6.prefixlength != subnet.net.ipv6.prefixlength) {
316 if(memcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, sizeof(subnet.net.ipv6))) {
322 if(find.type == SUBNET_MAC) {
323 if(memcmp(&find.net.mac.address, &subnet.net.mac.address, sizeof(subnet.net.mac))) {
329 printf("Subnet: %s\n", strip_weight(netstr));
330 printf("Owner: %s\n", owner);
335 fprintf(stderr, "Unknown address %s.\n", item);
337 fprintf(stderr, "Unknown subnet %s.\n", item);
346 int info(int fd, const char *item) {
348 return info_node(fd, item);
351 if(strchr(item, '.') || strchr(item, ':')) {
352 return info_subnet(fd, item);
355 fprintf(stderr, "Argument is not a node name, subnet or address.\n");