X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fgraph.c;h=28be9d5f1dc97db6747d8eb20fa7980eb162bd90;hb=f4010694b3b16453e5e6298c208910264e326978;hp=f2e546ee9b4e1463f4490f713a3bb90d316dc06e;hpb=075e6828a7533e7daa790225f17aa6bb39703278;p=tinc

diff --git a/src/graph.c b/src/graph.c
index f2e546ee..28be9d5f 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -1,6 +1,6 @@
 /*
     graph.c -- graph algorithms
-    Copyright (C) 2001-2009 Guus Sliepen <guus@tinc-vpn.org>,
+    Copyright (C) 2001-2011 Guus Sliepen <guus@tinc-vpn.org>,
                   2001-2005 Ivo Timmermans
 
     This program is free software; you can redistribute it and/or modify
@@ -13,11 +13,9 @@
     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:
@@ -55,9 +53,11 @@
 #include "netutl.h"
 #include "node.h"
 #include "process.h"
+#include "protocol.h"
 #include "subnet.h"
 #include "utils.h"
 #include "xalloc.h"
+#include "graph.h"
 
 /* Implementation of Kruskal's algorithm.
    Running time: O(E)
@@ -70,8 +70,6 @@ void mst_kruskal(void) {
 	node_t *n;
 	connection_t *c;
 
-	cp();
-	
 	/* Clear MST status on connections */
 
 	for(node = connection_tree->head; node; node = node->next) {
@@ -115,7 +113,7 @@ void mst_kruskal(void) {
    Running time: O(N^2)
 */
 
-void sssp_dijkstra(void) {
+static void sssp_dijkstra(void) {
 	splay_node_t *node, *to;
 	edge_t *e;
 	node_t *n, *m;
@@ -123,8 +121,6 @@ void sssp_dijkstra(void) {
 	list_node_t *lnode, *nnode;
 	bool indirect;
 
-	cp();
-
 	todo_list = list_alloc(NULL);
 
 	ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Running Dijkstra's algorithm:");
@@ -249,8 +245,6 @@ void sssp_bfs(void) {
 	list_node_t *from, *todonext;
 	bool indirect;
 
-	cp();
-
 	todo_list = list_alloc(NULL);
 
 	/* Clear visited status on nodes */
@@ -292,16 +286,12 @@ void sssp_bfs(void) {
 			   n->address is set to the e->address of the edge left of n to n.
 			   We are currently examining the edge e right of n from n:
 
-			   - If e->reverse->address != n->address, then e->to is probably
-			     not reachable for the nodes left of n. We do as if the indirectdata
-			     flag is set on edge e.
 			   - If edge e provides for better reachability of e->to, update
 			     e->to and (re)add it to the todo_list to (re)examine the reachability
 			     of nodes behind it.
 			 */
 
-			indirect = n->status.indirect || e->options & OPTION_INDIRECT
-				|| ((n != myself) && sockaddrcmp(&n->address, &e->reverse->address));
+			indirect = n->status.indirect || e->options & OPTION_INDIRECT;
 
 			if(e->to->status.visited
 			   && (!e->to->status.indirect || indirect))
@@ -326,7 +316,7 @@ void sssp_bfs(void) {
 	list_free(todo_list);
 }
 
-void check_reachability() {
+static void check_reachability(void) {
 	splay_node_t *node, *next;
 	node_t *n;
 	char *name;
@@ -344,23 +334,24 @@ void check_reachability() {
 			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);
 			} 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);
 			}
 
 			/* 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;
 
-			event_del(&n->mtuevent);
+			if(timeout_initialized(&n->mtuevent))
+				event_del(&n->mtuevent);
 
 			xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
 			xasprintf(&envp[1], "DEVICE=%s", device ? : "");
@@ -386,48 +377,17 @@ void check_reachability() {
 				free(envp[i]);
 
 			subnet_update(n, NULL, n->status.reachable);
-		}
-	}
-}
-
-/* Dump nodes and edges to a graphviz file.
-	   
-   The file can be converted to an image with
-   dot -Tpng graph_filename -o image_filename.png -Gconcentrate=true
-*/
 
-int dump_graph(struct evbuffer *out) {
-	splay_node_t *node;
-	node_t *n;
-	edge_t *e;
-
-	if(evbuffer_add_printf(out, "digraph {\n") == -1)
-		return errno;
-	
-	/* dump all nodes first */
-	for(node = node_tree->head; node; node = node->next) {
-		n = node->data;
-		if(evbuffer_add_printf(out, "	%s [label = \"%s\"];\n",
-							   n->name, n->name) == -1)
-			return errno;
-	}
-
-	/* now dump all edges */
-	for(node = edge_weight_tree->head; node; node = node->next) {
-		e = node->data;
-		if(evbuffer_add_printf(out, "	%s -> %s;\n",
-							   e->from->name, e->to->name) == -1)
-			return errno;
+			if(!n->status.reachable)
+				update_node_udp(n, NULL);
+			else if(n->connection)
+				send_ans_key(n);
+		}
 	}
-
-	if(evbuffer_add_printf(out, "}\n") == -1)
-		return errno;
-
-	return 0;
 }
 
 void graph(void) {
-    subnet_cache_flush();
+	subnet_cache_flush();
 	sssp_dijkstra();
 	check_reachability();
 	mst_kruskal();