/*
graph.c -- graph algorithms
- Copyright (C) 2001-2006 Guus Sliepen <guus@tinc-vpn.org>,
+ Copyright (C) 2001-2010 Guus Sliepen <guus@tinc-vpn.org>,
2001-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* We need to generate two trees from the graph:
#include "netutl.h"
#include "node.h"
#include "process.h"
+#include "protocol.h"
#include "subnet.h"
#include "utils.h"
+#include "xalloc.h"
static bool graph_changed = true;
Please note that sorting on weight is already done by add_edge().
*/
-void mst_kruskal(void)
-{
+void mst_kruskal(void) {
avl_node_t *node, *next;
edge_t *e;
node_t *n;
int safe_edges = 0;
bool skipped;
- cp();
-
/* Clear MST status on connections */
for(node = connection_tree->head; node; node = node->next) {
Running time: O(E)
*/
-void sssp_bfs(void)
-{
+void sssp_bfs(void) {
avl_node_t *node, *next, *to;
edge_t *e;
node_t *n;
char *envp[7];
int i;
- cp();
-
todo_list = list_alloc(NULL);
/* Clear visited status on nodes */
e->to->via = indirect ? n->via : e->to;
e->to->options = e->options;
- if(sockaddrcmp(&e->to->address, &e->address)) {
- node = avl_unlink(node_udp_tree, e->to);
- sockaddrfree(&e->to->address);
- sockaddrcpy(&e->to->address, &e->address);
-
- if(e->to->hostname)
- free(e->to->hostname);
-
- e->to->hostname = sockaddr2hostname(&e->to->address);
-
- if(node)
- avl_insert_node(node_udp_tree, node);
-
- if(e->to->options & OPTION_PMTU_DISCOVERY) {
- e->to->mtuprobes = 0;
- e->to->minmtu = 0;
- e->to->maxmtu = MTU;
- if(e->to->status.validkey)
- send_mtu_probe(e->to);
- }
- }
+ if(e->to->address.sa.sa_family == AF_UNSPEC && e->address.sa.sa_family != AF_UNKNOWN)
+ update_node_udp(e->to, &e->address);
list_insert_tail(todo_list, e->to);
}
n->status.reachable = !n->status.reachable;
if(n->status.reachable) {
- ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Node %s (%s) became reachable"),
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, "Node %s (%s) became reachable",
n->name, n->hostname);
- avl_insert(node_udp_tree, n);
} else {
- ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Node %s (%s) became unreachable"),
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, "Node %s (%s) became unreachable",
n->name, n->hostname);
- avl_delete(node_udp_tree, n);
}
+ /* TODO: only clear status.validkey if node is unreachable? */
+
n->status.validkey = false;
- n->status.waitingforkey = false;
+ n->last_req_key = 0;
n->maxmtu = MTU;
n->minmtu = 0;
n->mtuprobes = 0;
- asprintf(&envp[0], "NETNAME=%s", netname ? : "");
- asprintf(&envp[1], "DEVICE=%s", device ? : "");
- asprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- asprintf(&envp[3], "NODE=%s", n->name);
+ if(n->mtuevent) {
+ event_del(n->mtuevent);
+ n->mtuevent = NULL;
+ }
+
+ xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
+ xasprintf(&envp[1], "DEVICE=%s", device ? : "");
+ xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
+ xasprintf(&envp[3], "NODE=%s", n->name);
sockaddr2str(&n->address, &address, &port);
- asprintf(&envp[4], "REMOTEADDRESS=%s", address);
- asprintf(&envp[5], "REMOTEPORT=%s", port);
+ xasprintf(&envp[4], "REMOTEADDRESS=%s", address);
+ xasprintf(&envp[5], "REMOTEPORT=%s", port);
envp[6] = NULL;
execute_script(n->status.reachable ? "host-up" : "host-down", envp);
- asprintf(&name,
+ xasprintf(&name,
n->status.reachable ? "hosts/%s-up" : "hosts/%s-down",
n->name);
execute_script(name, envp);
free(envp[i]);
subnet_update(n, NULL, n->status.reachable);
+
+ if(!n->status.reachable)
+ update_node_udp(n, NULL);
+ else if(n->connection)
+ send_ans_key(n);
}
}
}
-void graph(void)
-{
+void graph(void) {
+ subnet_cache_flush();
sssp_bfs();
mst_kruskal();
graph_changed = true;
dot -Tpng graph_filename -o image_filename.png -Gconcentrate=true
*/
-void dump_graph(void)
-{
+void dump_graph(void) {
avl_node_t *node;
node_t *n;
edge_t *e;
if(filename[0] == '|') {
file = popen(filename + 1, "w");
} else {
- asprintf(&tmpname, "%s.new", filename);
+ xasprintf(&tmpname, "%s.new", filename);
file = fopen(tmpname, "w");
}
pclose(file);
} else {
fclose(file);
+#ifdef HAVE_MINGW
+ unlink(filename);
+#endif
rename(tmpname, filename);
free(tmpname);
}