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 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;
66 long int last_state_change;
68 while(recvline(fd, line, sizeof line)) {
69 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);
75 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);
96 printf("Address: %s port %s\n", host, port);
98 char timestr[32] = "never";
99 time_t lsc_time = last_state_change;
101 if(last_state_change)
102 strftime(timestr, sizeof timestr, "%Y-%m-%d %H:%M:%S", localtime(&lsc_time));
104 status = status_union.bits;
107 printf("Online since: %s\n", timestr);
109 printf("Last seen: %s\n", timestr);
117 printf(" reachable");
122 if(status.udp_confirmed)
123 printf(" udp_confirmed");
127 if(options & OPTION_INDIRECT)
129 if(options & OPTION_TCPONLY)
131 if(options & OPTION_PMTU_DISCOVERY)
132 printf(" pmtu_discovery");
133 if(options & OPTION_CLAMP_MSS)
134 printf(" clamp_mss");
136 printf("Protocol: %d.%d\n", PROT_MAJOR, OPTION_VERSION(options));
137 printf("Reachability: ");
138 if(!strcmp(host, "MYSELF"))
139 printf("can reach itself\n");
140 else if(!status.reachable)
141 printf("unreachable\n");
142 else if(strcmp(via, item))
143 printf("indirectly via %s\n", via);
144 else if(!status.validkey)
147 printf("directly with UDP\nPMTU: %d\n", pmtu);
148 else if(!strcmp(nexthop, item))
149 printf("directly with TCP\n");
151 printf("none, forwarded via %s\n", nexthop);
155 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_EDGES, item);
156 while(recvline(fd, line, sizeof line)) {
157 int n = sscanf(line, "%d %d %s %s", &code, &req, from, to);
161 fprintf(stderr, "Unable to parse edge dump from tincd.\n%s\n", line);
164 if(!strcmp(from, item))
171 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
172 while(recvline(fd, line, sizeof line)) {
173 int n = sscanf(line, "%d %d %s %s", &code, &req, subnet, from);
177 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
180 if(!strcmp(from, item))
181 printf(" %s", strip_weight(subnet));
188 static int info_subnet(int fd, const char *item) {
189 subnet_t subnet, find;
191 if(!str2net(&find, item)) {
192 fprintf(stderr, "Could not parse subnet or address '%s'.\n", item);
196 bool address = !strchr(item, '/');
197 bool weight = strchr(item, '#');
206 sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
207 while(recvline(fd, line, sizeof line)) {
208 int n = sscanf(line, "%d %d %s %s", &code, &req, netstr, owner);
212 if(n != 4 || !str2net(&subnet, netstr)) {
213 fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
217 if(find.type != subnet.type)
221 if(find.weight != subnet.weight)
225 if(find.type == SUBNET_IPV4) {
227 if(maskcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, subnet.net.ipv4.prefixlength))
230 if(find.net.ipv4.prefixlength != subnet.net.ipv4.prefixlength)
232 if(memcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, sizeof subnet.net.ipv4))
235 } else if(find.type == SUBNET_IPV6) {
237 if(maskcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, subnet.net.ipv6.prefixlength))
240 if(find.net.ipv6.prefixlength != subnet.net.ipv6.prefixlength)
242 if(memcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, sizeof subnet.net.ipv6))
245 } if(find.type == SUBNET_MAC) {
246 if(memcmp(&find.net.mac.address, &subnet.net.mac.address, sizeof subnet.net.mac))
251 printf("Subnet: %s\n", strip_weight(netstr));
252 printf("Owner: %s\n", owner);
257 fprintf(stderr, "Unknown address %s.\n", item);
259 fprintf(stderr, "Unknown subnet %s.\n", item);
266 int info(int fd, const char *item) {
268 return info_node(fd, item);
269 if(strchr(item, '.') || strchr(item, ':'))
270 return info_subnet(fd, item);
272 fprintf(stderr, "Argument is not a node name, subnet or address.\n");