2 info.c -- Show information about a node, subnet or address
3 Copyright (C) 2012 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"
29 void logger(int level, int priority, const char *format, ...) {
32 vfprintf(stderr, format, ap);
36 static char *strip_weight(char *netstr) {
37 int len = strlen(netstr);
38 if(len >= 3 && !strcmp(netstr + len - 3, "#10"))
43 static int info_node(int fd, const char *item) {
44 // Check the list of nodes
45 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_NODES, item);
58 int code, req, cipher, digest, maclength, compression, distance;
59 short int pmtu, minmtu, maxmtu;
63 while(recvline(fd, line, sizeof line)) {
64 int n = sscanf(line, "%d %d %s at %s port %s cipher %d digest %d maclength %d compression %d options %x status %04x nexthop %s via %s distance %d pmtu %hd (min %hd max %hd)", &code, &req, node, host, port, &cipher, &digest, &maclength, &compression, &options, (unsigned *)&status, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu);
71 n = sscanf(line, "%d %d %s at %s cipher %d digest %d maclength %d compression %d options %x status %04x nexthop %s via %s distance %d pmtu %hd (min %hd max %hd)", &code, &req, node, host, &cipher, &digest, &maclength, &compression, &options, (unsigned *)&status, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu);
74 fprintf(stderr, "Unable to parse node dump from tincd.\n");
79 if(!strcmp(node, item)) {
86 fprintf(stderr, "Unknown node %s.\n", item);
90 while(recvline(fd, line, sizeof line)) {
91 if(sscanf(line, "%d %d %s", &code, &req, node) == 2)
95 printf("Node: %s\n", item);
97 printf("Address: %s port %s\n", host, port);
104 printf(" reachable");
111 if(options & OPTION_INDIRECT)
113 if(options & OPTION_TCPONLY)
115 if(options & OPTION_PMTU_DISCOVERY)
116 printf(" pmtu_discovery");
117 if(options & OPTION_CLAMP_MSS)
118 printf(" clamp_mss");
120 printf("Protocol: %d.%d\n", PROT_MAJOR, OPTION_VERSION(options));
121 printf("Reachability: ");
123 printf("can reach itself\n");
124 else if(!status.reachable)
125 printf("unreachable\n");
126 else if(strcmp(via, item))
127 printf("indirectly via %s\n", via);
128 else if(!status.validkey)
131 printf("directly with UDP\nPMTU: %d\n", pmtu);
132 else if(!strcmp(nexthop, item))
133 printf("directly with TCP\n");
135 printf("none, forwarded via %s\n", nexthop);
139 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_EDGES, item);
140 while(recvline(fd, line, sizeof line)) {
141 int n = sscanf(line, "%d %d %s to %s", &code, &req, from, to);
145 fprintf(stderr, "Unable to parse edge dump from tincd.\n%s\n", line);
148 if(!strcmp(from, item))
155 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
156 while(recvline(fd, line, sizeof line)) {
157 int n = sscanf(line, "%d %d %s owner %s", &code, &req, subnet, from);
161 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
164 if(!strcmp(from, item))
165 printf(" %s", strip_weight(subnet));
172 static int info_subnet(int fd, const char *item) {
173 subnet_t subnet, find;
175 if(!str2net(&find, item)) {
176 fprintf(stderr, "Could not parse subnet or address '%s'.\n", item);
180 bool address = !strchr(item, '/');
181 bool weight = strchr(item, '#');
190 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
191 while(recvline(fd, line, sizeof line)) {
192 int n = sscanf(line, "%d %d %s owner %s", &code, &req, netstr, owner);
196 if(n != 4 || !str2net(&subnet, netstr)) {
197 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
201 if(find.type != subnet.type)
205 if(find.weight != subnet.weight)
209 if(find.type == SUBNET_IPV4) {
211 if(maskcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, subnet.net.ipv4.prefixlength))
214 if(find.net.ipv4.prefixlength != subnet.net.ipv4.prefixlength)
216 if(memcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, sizeof subnet.net.ipv4))
219 } else if(find.type == SUBNET_IPV6) {
221 if(maskcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, subnet.net.ipv6.prefixlength))
224 if(find.net.ipv6.prefixlength != subnet.net.ipv6.prefixlength)
226 if(memcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, sizeof subnet.net.ipv6))
229 } if(find.type == SUBNET_MAC) {
230 if(memcmp(&find.net.mac.address, &subnet.net.mac.address, sizeof subnet.net.mac))
235 printf("Subnet: %s\n", strip_weight(netstr));
236 printf("Owner: %s\n", owner);
241 fprintf(stderr, "Unknown address %s.\n", item);
243 fprintf(stderr, "Unknown subnet %s.\n", item);
250 int info(int fd, const char *item) {
252 return info_node(fd, item);
253 if(strchr(item, '.') || strchr(item, ':'))
254 return info_subnet(fd, item);
256 fprintf(stderr, "Argument is not a node name, subnet or address.\n");