2012-07-15 23:05:25 +00:00
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/*
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info.c -- Show information about a node, subnet or address
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2013-08-13 18:38:57 +00:00
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Copyright (C) 2012-2013 Guus Sliepen <guus@tinc-vpn.org>
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2012-07-15 23:05:25 +00:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "system.h"
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#include "control_common.h"
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#include "list.h"
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#include "subnet.h"
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#include "tincctl.h"
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#include "info.h"
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2014-08-25 04:55:42 +00:00
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#include "utils.h"
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2012-07-15 23:05:25 +00:00
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#include "xalloc.h"
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void logger(int level, int priority, const char *format, ...) {
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va_list ap;
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2012-10-10 15:17:49 +00:00
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va_start(ap, format);
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vfprintf(stderr, format, ap);
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va_end(ap);
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2013-05-28 11:40:32 +00:00
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fputc('\n', stderr);
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2012-07-15 23:05:25 +00:00
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}
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2012-08-03 11:23:07 +00:00
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char *strip_weight(char *netstr) {
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2012-07-15 23:14:08 +00:00
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int len = strlen(netstr);
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if(len >= 3 && !strcmp(netstr + len - 3, "#10"))
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netstr[len - 3] = 0;
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return netstr;
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}
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2012-07-15 23:05:25 +00:00
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static int info_node(int fd, const char *item) {
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// Check the list of nodes
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sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_NODES, item);
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bool found = false;
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char line[4096];
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char node[4096];
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2014-09-21 17:17:02 +00:00
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char id[4096];
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2012-07-15 23:05:25 +00:00
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char from[4096];
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char to[4096];
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char subnet[4096];
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char host[4096];
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char port[4096];
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char via[4096];
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char nexthop[4096];
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int code, req, cipher, digest, maclength, compression, distance;
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2012-10-10 15:17:49 +00:00
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short int pmtu, minmtu, maxmtu;
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2012-07-15 23:05:25 +00:00
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unsigned int options;
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2013-02-20 14:35:08 +00:00
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union {
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node_status_t bits;
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uint32_t raw;
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} status_union;
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2012-07-15 23:05:25 +00:00
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node_status_t status;
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2012-09-26 20:20:43 +00:00
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long int last_state_change;
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2012-07-15 23:05:25 +00:00
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while(recvline(fd, line, sizeof line)) {
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2014-09-21 17:17:02 +00:00
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int n = sscanf(line, "%d %d %s %s %s port %s %d %d %d %d %x %"PRIx32" %s %s %d %hd %hd %hd %ld", &code, &req, node, id, host, port, &cipher, &digest, &maclength, &compression, &options, &status_union.raw, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
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2012-07-15 23:05:25 +00:00
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if(n == 2)
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break;
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2014-09-21 17:17:02 +00:00
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if(n != 19) {
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2012-09-26 21:18:32 +00:00
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fprintf(stderr, "Unable to parse node dump from tincd.\n");
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return 1;
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2012-07-15 23:05:25 +00:00
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}
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if(!strcmp(node, item)) {
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found = true;
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break;
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}
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}
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if(!found) {
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fprintf(stderr, "Unknown node %s.\n", item);
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return 1;
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}
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while(recvline(fd, line, sizeof line)) {
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if(sscanf(line, "%d %d %s", &code, &req, node) == 2)
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break;
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}
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2012-10-10 15:17:49 +00:00
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2012-07-15 23:05:25 +00:00
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printf("Node: %s\n", item);
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2014-09-21 17:17:02 +00:00
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printf("Node ID: %s\n", id);
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2012-09-26 21:18:32 +00:00
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printf("Address: %s port %s\n", host, port);
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2012-09-26 20:20:43 +00:00
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char timestr[32] = "never";
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2013-02-20 14:35:08 +00:00
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time_t lsc_time = last_state_change;
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2012-09-26 20:20:43 +00:00
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if(last_state_change)
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2013-02-20 14:35:08 +00:00
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strftime(timestr, sizeof timestr, "%Y-%m-%d %H:%M:%S", localtime(&lsc_time));
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status = status_union.bits;
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2012-09-26 20:20:43 +00:00
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if(status.reachable)
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printf("Online since: %s\n", timestr);
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else
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printf("Last seen: %s\n", timestr);
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2012-07-15 23:05:25 +00:00
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printf("Status: ");
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if(status.validkey)
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printf(" validkey");
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if(status.visited)
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printf(" visited");
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if(status.reachable)
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printf(" reachable");
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if(status.indirect)
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printf(" indirect");
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2012-07-31 19:43:49 +00:00
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if(status.sptps)
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printf(" sptps");
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2012-10-10 12:46:22 +00:00
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if(status.udp_confirmed)
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printf(" udp_confirmed");
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2012-07-15 23:05:25 +00:00
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printf("\n");
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2012-09-26 20:20:43 +00:00
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2012-07-15 23:05:25 +00:00
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printf("Options: ");
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if(options & OPTION_INDIRECT)
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printf(" indirect");
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if(options & OPTION_TCPONLY)
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printf(" tcponly");
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if(options & OPTION_PMTU_DISCOVERY)
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printf(" pmtu_discovery");
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if(options & OPTION_CLAMP_MSS)
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printf(" clamp_mss");
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printf("\n");
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2012-07-17 16:05:55 +00:00
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printf("Protocol: %d.%d\n", PROT_MAJOR, OPTION_VERSION(options));
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2012-07-15 23:05:25 +00:00
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printf("Reachability: ");
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2012-09-26 20:20:43 +00:00
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if(!strcmp(host, "MYSELF"))
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2012-07-15 23:05:25 +00:00
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printf("can reach itself\n");
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else if(!status.reachable)
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printf("unreachable\n");
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else if(strcmp(via, item))
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printf("indirectly via %s\n", via);
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else if(!status.validkey)
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printf("unknown\n");
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else if(minmtu > 0)
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printf("directly with UDP\nPMTU: %d\n", pmtu);
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else if(!strcmp(nexthop, item))
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printf("directly with TCP\n");
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else
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printf("none, forwarded via %s\n", nexthop);
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// List edges
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printf("Edges: ");
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sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_EDGES, item);
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while(recvline(fd, line, sizeof line)) {
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2012-09-26 21:18:32 +00:00
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int n = sscanf(line, "%d %d %s %s", &code, &req, from, to);
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2012-07-15 23:05:25 +00:00
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if(n == 2)
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break;
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if(n != 4) {
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fprintf(stderr, "Unable to parse edge dump from tincd.\n%s\n", line);
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return 1;
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}
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if(!strcmp(from, item))
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printf(" %s", to);
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}
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printf("\n");
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// List subnets
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printf("Subnets: ");
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sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
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while(recvline(fd, line, sizeof line)) {
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2012-09-26 21:18:32 +00:00
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int n = sscanf(line, "%d %d %s %s", &code, &req, subnet, from);
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2012-07-15 23:05:25 +00:00
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if(n == 2)
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break;
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if(n != 4) {
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fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
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return 1;
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}
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if(!strcmp(from, item))
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2012-07-15 23:14:08 +00:00
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printf(" %s", strip_weight(subnet));
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2012-07-15 23:05:25 +00:00
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}
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printf("\n");
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return 0;
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}
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static int info_subnet(int fd, const char *item) {
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subnet_t subnet, find;
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2012-07-15 23:09:47 +00:00
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if(!str2net(&find, item)) {
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fprintf(stderr, "Could not parse subnet or address '%s'.\n", item);
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2012-07-15 23:05:25 +00:00
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return 1;
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2012-07-15 23:09:47 +00:00
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}
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2012-07-15 23:05:25 +00:00
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bool address = !strchr(item, '/');
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bool weight = strchr(item, '#');
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bool found = false;
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char line[4096];
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char netstr[4096];
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char owner[4096];
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int code, req;
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sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
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while(recvline(fd, line, sizeof line)) {
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2012-09-26 21:18:32 +00:00
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int n = sscanf(line, "%d %d %s %s", &code, &req, netstr, owner);
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2012-07-15 23:05:25 +00:00
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if(n == 2)
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break;
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if(n != 4 || !str2net(&subnet, netstr)) {
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fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
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return 1;
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}
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if(find.type != subnet.type)
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continue;
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if(weight) {
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if(find.weight != subnet.weight)
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continue;
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}
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if(find.type == SUBNET_IPV4) {
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if(address) {
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if(maskcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, subnet.net.ipv4.prefixlength))
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continue;
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} else {
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if(find.net.ipv4.prefixlength != subnet.net.ipv4.prefixlength)
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continue;
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if(memcmp(&find.net.ipv4.address, &subnet.net.ipv4.address, sizeof subnet.net.ipv4))
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continue;
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}
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} else if(find.type == SUBNET_IPV6) {
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if(address) {
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if(maskcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, subnet.net.ipv6.prefixlength))
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continue;
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} else {
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if(find.net.ipv6.prefixlength != subnet.net.ipv6.prefixlength)
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continue;
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if(memcmp(&find.net.ipv6.address, &subnet.net.ipv6.address, sizeof subnet.net.ipv6))
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continue;
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}
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} if(find.type == SUBNET_MAC) {
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if(memcmp(&find.net.mac.address, &subnet.net.mac.address, sizeof subnet.net.mac))
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continue;
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}
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found = true;
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2012-07-15 23:14:08 +00:00
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printf("Subnet: %s\n", strip_weight(netstr));
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2012-07-15 23:05:25 +00:00
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printf("Owner: %s\n", owner);
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}
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if(!found) {
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if(address)
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fprintf(stderr, "Unknown address %s.\n", item);
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else
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fprintf(stderr, "Unknown subnet %s.\n", item);
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return 1;
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}
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return 0;
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}
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int info(int fd, const char *item) {
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if(check_id(item))
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return info_node(fd, item);
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if(strchr(item, '.') || strchr(item, ':'))
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return info_subnet(fd, item);
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fprintf(stderr, "Argument is not a node name, subnet or address.\n");
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return 1;
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}
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