X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprotocol_node.c;h=f6be38fd2fff9c66a013edb777b4d82e37067b2a;hp=f95dec8e7d2e166043cd348b4c19dbb5bbafefde;hb=f75dcef72a81a337e847adf0bae54198894f65b9;hpb=5fc1ed17f41f0c535cf57a4b7e00cd6d45759503

diff --git a/src/protocol_node.c b/src/protocol_node.c
index f95dec8e..f6be38fd 100644
--- a/src/protocol_node.c
+++ b/src/protocol_node.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_node.c,v 1.1.4.7 2002/09/09 19:40:08 guus Exp $
+    $Id: protocol_node.c,v 1.1.4.8 2002/09/09 21:25:02 guus Exp $
 */
 
 #include "config.h"
@@ -43,204 +43,202 @@
 
 #include "system.h"
 
-int send_add_node(connection_t *c, node_t *n)
+int send_add_node(connection_t * c, node_t * n)
 {
-  int x;
-  char *address, *port;
-  cp();
-  if(!n->status.reachable)
-    return 0;
-
-  sockaddr2str(&n->address, &address, &port);
-  x = send_request(c, "%d %s %s %s %lx %d %s %s", ADD_NODE,
-                      n->name, address, port,
-		      n->options, n->distance + 1, // Alternatively, use n->distance + c->estimated_weight
-                      n->prevhop->name, n->via->name);
-  free(address);
-  free(port);
-  cp();
-  return x;
+	int x;
+	char *address, *port;
+	cp();
+	if(!n->status.reachable)
+		return 0;
+
+	sockaddr2str(&n->address, &address, &port);
+	x = send_request(c, "%d %s %s %s %lx %d %s %s", ADD_NODE, n->name, address, port, n->options, n->distance + 1,	// Alternatively, use n->distance + c->estimated_weight
+					 n->prevhop->name, n->via->name);
+	free(address);
+	free(port);
+	cp();
+	return x;
 }
 
-int add_node_h(connection_t *c)
+int add_node_h(connection_t * c)
 {
-  connection_t *other;
-  node_t *n, *prevhop, *via;
-  char name[MAX_STRING_SIZE];
-  char address[MAX_STRING_SIZE];
-  char port[MAX_STRING_SIZE];
-  char prevhopname[MAX_STRING_SIZE];
-  char vianame[MAX_STRING_SIZE];
-  long int options;
-  int distance;
-  avl_node_t *node;
-  cp();
-  if(sscanf(c->buffer, "%*d "MAX_STRING" "MAX_STRING" "MAX_STRING" %lx %d "MAX_STRING" "MAX_STRING,
-            name, address, port, &options, &distance, prevhopname, vianame) != 7)
-    {
-       syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_NODE", c->name, c->hostname);
-       return -1;
-    }
-
-  /* Check if names are valid */
-
-  if(check_id(name))
-    {
-      syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_NODE", c->name, c->hostname, _("invalid name"));
-      return -1;
-    }
-
-  /* This node is indirect if it's nexthop is as well */
-  
-  if(c->node->options & OPTION_INDIRECT)
-    options |= OPTION_INDIRECT;
-
-  /* Lookup nodes */
-
-  prevhop = lookup_node(prevhopname);
-  
-  if(!prevhop)
-    {
-      prevhop = new_node();
-      prevhop->name = xstrdup(prevhopname);
-      node_add(prevhop);
-    }
-
-  via = lookup_node(vianame);
-  
-  if(!via)
-    {
-      via = new_node();
-      via->name = xstrdup(vianame);
-      node_add(via);
-    }
-
-  n = lookup_node(name);
-  
-  if(!n)
-    {
-      // It's a new node. Add it and tell the others.
-      n = new_node();
-      n->name = xstrdup(name);
-      n->address = str2sockaddr(address, port);
-      n->hostname = sockaddr2hostname(&n->address);
-      n->options = options;
-      n->distance = distance;
-      n->nexthop = c->node;
-      n->prevhop = prevhop;
-      n->via = via;
-      node_add(n);
-      if(prevhop == myself)
-        {
-          syslog(LOG_WARNING, _("Got ADD_NODE %s prevhop %s via %s from %s, sending back a DEL_NODE!"), name, prevhopname, vianame, c->name);
-          // send_del_node(c, n);
-          return 0;
-        }
-      n->status.reachable = 1;
-    }
-  else
-    {
-      // If this ADD_NODE is closer or more direct, use it instead of the old one.
-      if(!n->status.reachable || ((n->options & OPTION_INDIRECT) && !(options & OPTION_INDIRECT)) || n->distance > distance)
-        {
-          if(prevhop == myself)
-            {
-              syslog(LOG_WARNING, _("Got ADD_NODE %s prevhop %s via %s from %s!"), name, prevhopname, vianame, c->name);
-              // send_del_node(c, n);
-              return 0;
-            }
-          node = avl_unlink(node_udp_tree, n);
-          n->address = str2sockaddr(address, port);
-          avl_insert_node(node_udp_tree, node);
-          if(n->hostname)
-            free(n->hostname);
-          n->hostname = sockaddr2hostname(&n->address);
-          n->options = options;
-          n->distance = distance;
-          n->via = n->nexthop = c->node;
-          n->status.reachable = 1;
-          n->status.validkey = 0;
-          n->status.waitingforkey = 0;
-        }
-      else
-        // Otherwise, just ignore it.
-        return 0;
-    }
-
-  /* Tell the rest about the new node */
-
-  for(node = connection_tree->head; node; node = node->next)
-    {
-      other = (connection_t *)node->data;
-      if(other->status.active && other != c)
-        send_add_node(other, n);
-    }
-
-  cp();
-  return 0;
+	connection_t *other;
+	node_t *n, *prevhop, *via;
+	char name[MAX_STRING_SIZE];
+	char address[MAX_STRING_SIZE];
+	char port[MAX_STRING_SIZE];
+	char prevhopname[MAX_STRING_SIZE];
+	char vianame[MAX_STRING_SIZE];
+	long int options;
+	int distance;
+	avl_node_t *node;
+	cp();
+	if(sscanf
+	   (c->buffer,
+		"%*d " MAX_STRING " " MAX_STRING " " MAX_STRING " %lx %d " MAX_STRING
+		" " MAX_STRING, name, address, port, &options, &distance, prevhopname,
+		vianame) != 7) {
+		syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_NODE", c->name,
+			   c->hostname);
+		return -1;
+	}
+
+	/* Check if names are valid */
+
+	if(check_id(name)) {
+		syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_NODE", c->name,
+			   c->hostname, _("invalid name"));
+		return -1;
+	}
+
+	/* This node is indirect if it's nexthop is as well */
+
+	if(c->node->options & OPTION_INDIRECT)
+		options |= OPTION_INDIRECT;
+
+	/* Lookup nodes */
+
+	prevhop = lookup_node(prevhopname);
+
+	if(!prevhop) {
+		prevhop = new_node();
+		prevhop->name = xstrdup(prevhopname);
+		node_add(prevhop);
+	}
+
+	via = lookup_node(vianame);
+
+	if(!via) {
+		via = new_node();
+		via->name = xstrdup(vianame);
+		node_add(via);
+	}
+
+	n = lookup_node(name);
+
+	if(!n) {
+		// It's a new node. Add it and tell the others.
+		n = new_node();
+		n->name = xstrdup(name);
+		n->address = str2sockaddr(address, port);
+		n->hostname = sockaddr2hostname(&n->address);
+		n->options = options;
+		n->distance = distance;
+		n->nexthop = c->node;
+		n->prevhop = prevhop;
+		n->via = via;
+		node_add(n);
+		if(prevhop == myself) {
+			syslog(LOG_WARNING,
+				   _
+				   ("Got ADD_NODE %s prevhop %s via %s from %s, sending back a DEL_NODE!"),
+				   name, prevhopname, vianame, c->name);
+			// send_del_node(c, n);
+			return 0;
+		}
+		n->status.reachable = 1;
+	} else {
+		// If this ADD_NODE is closer or more direct, use it instead of the old one.
+		if(!n->status.reachable
+		   || ((n->options & OPTION_INDIRECT) && !(options & OPTION_INDIRECT))
+		   || n->distance > distance) {
+			if(prevhop == myself) {
+				syslog(LOG_WARNING,
+					   _("Got ADD_NODE %s prevhop %s via %s from %s!"), name,
+					   prevhopname, vianame, c->name);
+				// send_del_node(c, n);
+				return 0;
+			}
+			node = avl_unlink(node_udp_tree, n);
+			n->address = str2sockaddr(address, port);
+			avl_insert_node(node_udp_tree, node);
+			if(n->hostname)
+				free(n->hostname);
+			n->hostname = sockaddr2hostname(&n->address);
+			n->options = options;
+			n->distance = distance;
+			n->via = n->nexthop = c->node;
+			n->status.reachable = 1;
+			n->status.validkey = 0;
+			n->status.waitingforkey = 0;
+		} else
+			// Otherwise, just ignore it.
+			return 0;
+	}
+
+	/* Tell the rest about the new node */
+
+	for(node = connection_tree->head; node; node = node->next) {
+		other = (connection_t *) node->data;
+		if(other->status.active && other != c)
+			send_add_node(other, n);
+	}
+
+	cp();
+	return 0;
 }
 
-int send_del_node(connection_t *c, node_t *n)
+int send_del_node(connection_t * c, node_t * n)
 {
-  cp();
-  return send_request(c, "%d %s %s", DEL_NODE, n->name, n->prevhop->name);
+	cp();
+	return send_request(c, "%d %s %s", DEL_NODE, n->name, n->prevhop->name);
 }
 
-int del_node_h(connection_t *c)
+int del_node_h(connection_t * c)
 {
-  char name[MAX_STRING_SIZE];
-  char prevhopname[MAX_STRING_SIZE];
-  node_t *n, *prevhop;
-  connection_t *other;
-  avl_node_t *node;
-  cp();
-  if(sscanf(c->buffer, "%*d "MAX_STRING" "MAX_STRING, name, prevhopname) != 2)
-    {
-      syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_NODE",
-             c->name, c->hostname);
-      return -1;
-    }
-
-  /* Check if names are valid */
-
-  if(check_id(name))
-    {
-      syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_NODE", c->name, c->hostname, _("invalid name"));
-      return -1;
-    }
-
-  /* Lookup nodes */
-
-  n = lookup_node(name);
-  prevhop = lookup_node(prevhopname);
-
-  if(!n || !prevhop)
-    {
-      if(debug_lvl >= DEBUG_PROTOCOL)
-        syslog(LOG_WARNING, _("Got %s from %s (%s) which does not appear in the node tree"), "DEL_NODE", c->name, c->hostname);
-      return 0;
-    }
-
-  /* If we got a DEL_NODE but we know of a different route to it, tell the one who send the DEL_NODE */
-
-  if(n->nexthop != c->node)
-    {
-      return send_add_node(c, n);
-    }
-  
-  /* Otherwise, tell the rest about the deleted node */
-
-  for(node = connection_tree->head; node; node = node->next)
-    {
-      other = (connection_t *)node->data;
-      if(other->status.active && other != c)
-        send_del_node(other, n);
-    }
-
-  /* "Delete" the node */
-  
-  n->status.reachable = 0;
-  n->status.validkey = 0;
-  cp();
-  return 0;
+	char name[MAX_STRING_SIZE];
+	char prevhopname[MAX_STRING_SIZE];
+	node_t *n, *prevhop;
+	connection_t *other;
+	avl_node_t *node;
+	cp();
+	if(sscanf(c->buffer, "%*d " MAX_STRING " " MAX_STRING, name, prevhopname) !=
+	   2) {
+		syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_NODE", c->name,
+			   c->hostname);
+		return -1;
+	}
+
+	/* Check if names are valid */
+
+	if(check_id(name)) {
+		syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_NODE", c->name,
+			   c->hostname, _("invalid name"));
+		return -1;
+	}
+
+	/* Lookup nodes */
+
+	n = lookup_node(name);
+	prevhop = lookup_node(prevhopname);
+
+	if(!n || !prevhop) {
+		if(debug_lvl >= DEBUG_PROTOCOL)
+			syslog(LOG_WARNING,
+				   _
+				   ("Got %s from %s (%s) which does not appear in the node tree"),
+				   "DEL_NODE", c->name, c->hostname);
+		return 0;
+	}
+
+	/* If we got a DEL_NODE but we know of a different route to it, tell the one who send the DEL_NODE */
+
+	if(n->nexthop != c->node) {
+		return send_add_node(c, n);
+	}
+
+	/* Otherwise, tell the rest about the deleted node */
+
+	for(node = connection_tree->head; node; node = node->next) {
+		other = (connection_t *) node->data;
+		if(other->status.active && other != c)
+			send_del_node(other, n);
+	}
+
+	/* "Delete" the node */
+
+	n->status.reachable = 0;
+	n->status.validkey = 0;
+	cp();
+	return 0;
 }