X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprotocol_subnet.c;h=c6c018744fb8a2da94af9fd8c5b3bad5bfe5d933;hp=6e7d706e153171f484c829047e57c6c854bec129;hb=5dde6461a321ee47b06e33f8203f2acf00a31a51;hpb=78fc59e994c764d072bf0045177f690a378d1308

diff --git a/src/protocol_subnet.c b/src/protocol_subnet.c
index 6e7d706e..c6c01874 100644
--- a/src/protocol_subnet.c
+++ b/src/protocol_subnet.c
@@ -2,6 +2,7 @@
     protocol_subnet.c -- handle the meta-protocol, subnets
     Copyright (C) 1999-2005 Ivo Timmermans,
                   2000-2009 Guus Sliepen <guus@tinc-vpn.org>
+                  2009      Michael Tokarev <mjt@tls.msk.ru>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -13,11 +14,9 @@
     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.
 */
 
 #include "system.h"
@@ -33,8 +32,7 @@
 #include "utils.h"
 #include "xalloc.h"
 
-bool send_add_subnet(connection_t *c, const subnet_t *subnet)
-{
+bool send_add_subnet(connection_t *c, const subnet_t *subnet) {
 	char netstr[MAXNETSTR];
 
 	cp();
@@ -42,11 +40,10 @@ bool send_add_subnet(connection_t *c, const subnet_t *subnet)
 	if(!net2str(netstr, sizeof netstr, subnet))
 		return false;
 
-	return send_request(c, "%d %lx %s %s", ADD_SUBNET, random(), subnet->owner->name, netstr);
+	return send_request(c, "%d %x %s %s", ADD_SUBNET, rand(), subnet->owner->name, netstr);
 }
 
-bool add_subnet_h(connection_t *c)
-{
+bool add_subnet_h(connection_t *c) {
 	char subnetstr[MAX_STRING_SIZE];
 	char name[MAX_STRING_SIZE];
 	node_t *owner;
@@ -60,7 +57,7 @@ bool add_subnet_h(connection_t *c)
 		return false;
 	}
 
-	/* Check if owner name is a valid */
+	/* Check if owner name is valid */
 
 	if(!check_id(name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_SUBNET", c->name,
@@ -127,8 +124,11 @@ bool add_subnet_h(connection_t *c)
 			free_subnet(allowed);
 		}
 
-		if(!cfg)
+		if(!cfg) {
+			logger(LOG_WARNING, _("Unauthorized %s from %s (%s) for %s"),
+				"ADD_SUBNET", c->name, c->hostname, subnetstr);
 			return false;
+		}
 
 		free_subnet(allowed);
 	}
@@ -149,8 +149,7 @@ bool add_subnet_h(connection_t *c)
 	return true;
 }
 
-bool send_del_subnet(connection_t *c, const subnet_t *s)
-{
+bool send_del_subnet(connection_t *c, const subnet_t *s) {
 	char netstr[MAXNETSTR];
 
 	cp();
@@ -158,11 +157,10 @@ bool send_del_subnet(connection_t *c, const subnet_t *s)
 	if(!net2str(netstr, sizeof netstr, s))
 		return false;
 
-	return send_request(c, "%d %lx %s %s", DEL_SUBNET, random(), s->owner->name, netstr);
+	return send_request(c, "%d %x %s %s", DEL_SUBNET, rand(), s->owner->name, netstr);
 }
 
-bool del_subnet_h(connection_t *c)
-{
+bool del_subnet_h(connection_t *c) {
 	char subnetstr[MAX_STRING_SIZE];
 	char name[MAX_STRING_SIZE];
 	node_t *owner;
@@ -176,7 +174,7 @@ bool del_subnet_h(connection_t *c)
 		return false;
 	}
 
-	/* Check if owner name is a valid */
+	/* Check if owner name is valid */
 
 	if(!check_id(name)) {
 		logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_SUBNET", c->name,
@@ -184,19 +182,6 @@ bool del_subnet_h(connection_t *c)
 		return false;
 	}
 
-	/* Check if the owner of the new subnet is in the connection list */
-
-	owner = lookup_node(name);
-
-	if(!owner) {
-		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for %s which is not in our node tree"),
-				   "DEL_SUBNET", c->name, c->hostname, name);
-		return true;
-	}
-
-	if(tunnelserver && owner != myself && owner != c->node)
-		return false;
-
 	/* Check if subnet string is valid */
 
 	if(!str2net(&s, subnetstr)) {
@@ -208,6 +193,23 @@ bool del_subnet_h(connection_t *c)
 	if(seen_request(c->buffer))
 		return true;
 
+	/* Check if the owner of the subnet being deleted is in the connection list */
+
+	owner = lookup_node(name);
+
+	if(tunnelserver && owner != myself && owner != c->node) {
+		/* in case of tunnelserver, ignore indirect subnet deletion */
+		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Ignoring indirect %s from %s (%s) for %s"),
+                                  "DEL_SUBNET", c->name, c->hostname, subnetstr);
+		return true;
+	}
+
+	if(!owner) {
+		ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for %s which is not in our node tree"),
+				   "DEL_SUBNET", c->name, c->hostname, name);
+		return true;
+	}
+
 	/* If everything is correct, delete the subnet from the list of the owner */
 
 	s.owner = owner;