/*
graph.c -- graph algorithms
- Copyright (C) 2001-2012 Guus Sliepen <guus@tinc-vpn.org>,
+ Copyright (C) 2001-2013 Guus Sliepen <guus@tinc-vpn.org>,
2001-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
#include "system.h"
-#include "config.h"
#include "connection.h"
#include "device.h"
#include "edge.h"
#include "graph.h"
#include "list.h"
#include "logger.h"
+#include "names.h"
#include "netutl.h"
#include "node.h"
-#include "process.h"
#include "protocol.h"
+#include "script.h"
#include "subnet.h"
#include "utils.h"
#include "xalloc.h"
#include "graph.h"
/* Implementation of Kruskal's algorithm.
- Running time: O(E)
+ Running time: O(EN)
Please note that sorting on weight is already done by add_edge().
*/
for splay_each(node_t, n, node_tree)
n->status.visited = false;
+ /* Starting point */
+
+ for splay_each(edge_t, e, edge_weight_tree) {
+ if(e->from->status.reachable) {
+ e->from->status.visited = true;
+ break;
+ }
+ }
+
/* Add safe edges */
+ bool skipped = false;
+
for splay_each(edge_t, e, edge_weight_tree) {
- if(!e->reverse || (e->from->status.visited && e->to->status.visited))
+ if(!e->reverse || (e->from->status.visited == e->to->status.visited)) {
+ skipped = true;
continue;
+ }
e->from->status.visited = true;
e->to->status.visited = true;
if(e->reverse->connection)
e->reverse->connection->status.mst = true;
- logger(DEBUG_SCARY_THINGS, LOG_DEBUG, " Adding edge %s - %s weight %d", e->from->name,
- e->to->name, e->weight);
+ logger(DEBUG_SCARY_THINGS, LOG_DEBUG, " Adding edge %s - %s weight %d", e->from->name, e->to->name, e->weight);
+
+ if(skipped) {
+ skipped = false;
+ next = edge_weight_tree->head;
+ }
}
}
for splay_each(node_t, n, node_tree) {
if(n->status.visited != n->status.reachable) {
n->status.reachable = !n->status.reachable;
- n->last_state_change = time(NULL);
+ n->last_state_change = now.tv_sec;
if(n->status.reachable) {
logger(DEBUG_TRAFFIC, LOG_DEBUG, "Node %s (%s) became reachable",
char *name;
char *address;
char *port;
- char *envp[7];
+ char *envp[8] = {NULL};
xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
xasprintf(&envp[1], "DEVICE=%s", device ? : "");
sockaddr2str(&n->address, &address, &port);
xasprintf(&envp[4], "REMOTEADDRESS=%s", address);
xasprintf(&envp[5], "REMOTEPORT=%s", port);
- envp[6] = NULL;
+ xasprintf(&envp[6], "NAME=%s", myself->name);
execute_script(n->status.reachable ? "host-up" : "host-down", envp);
free(address);
free(port);
- for(int i = 0; i < 6; i++)
+ for(int i = 0; i < 7; i++)
free(envp[i]);
subnet_update(n, NULL, n->status.reachable);