X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fsubnet.c;h=090a62bfe74236e4d7289e366d0a063f25f3630e;hp=12ca03c73135d8e6e80596fba7793b02580ac7af;hb=c2dc3784f127ef6db6e9960a4abecc1aab6f4e31;hpb=cc3c69c892b0dad9a6ece0a0f4ccd429a22fcbff

diff --git a/src/subnet.c b/src/subnet.c
index 12ca03c7..090a62bf 100644
--- a/src/subnet.c
+++ b/src/subnet.c
@@ -29,7 +29,7 @@
 #include "net.h"
 #include "netutl.h"
 #include "node.h"
-#include "process.h"
+#include "script.h"
 #include "subnet.h"
 #include "utils.h"
 #include "xalloc.h"
@@ -40,9 +40,9 @@ splay_tree_t *subnet_tree;
 
 /* Subnet lookup cache */
 
-hash_t *ipv4_cache;
-hash_t *ipv6_cache;
-hash_t *mac_cache;
+static hash_t *ipv4_cache;
+static hash_t *ipv6_cache;
+static hash_t *mac_cache;
 
 void subnet_cache_flush(void) {
 	hash_clear(ipv4_cache);
@@ -79,7 +79,7 @@ void free_subnet_tree(splay_tree_t *subnet_tree) {
 /* Allocating and freeing space for subnets */
 
 subnet_t *new_subnet(void) {
-	return xmalloc_and_zero(sizeof(subnet_t));
+	return xzalloc(sizeof(subnet_t));
 }
 
 void free_subnet(subnet_t *subnet) {
@@ -92,13 +92,15 @@ void subnet_add(node_t *n, subnet_t *subnet) {
 	subnet->owner = n;
 
 	splay_insert(subnet_tree, subnet);
-	splay_insert(n->subnet_tree, subnet);
+	if (n)
+		splay_insert(n->subnet_tree, subnet);
 
 	subnet_cache_flush();
 }
 
 void subnet_del(node_t *n, subnet_t *subnet) {
-	splay_delete(n->subnet_tree, subnet);
+	if (n)
+		splay_delete(n->subnet_tree, subnet);
 	splay_delete(subnet_tree, subnet);
 
 	subnet_cache_flush();
@@ -126,7 +128,7 @@ subnet_t *lookup_subnet_mac(const node_t *owner, const mac_t *address) {
 
 		if(!memcmp(address, &p->net.mac.address, sizeof *address)) {
 			r = p;
-			if(p->owner->status.reachable)
+			if(!p->owner || p->owner->status.reachable)
 				break;
 		}
 	}
@@ -155,7 +157,7 @@ subnet_t *lookup_subnet_ipv4(const ipv4_t *address) {
 
 		if(!maskcmp(address, &p->net.ipv4.address, p->net.ipv4.prefixlength)) {
 			r = p;
-			if(p->owner->status.reachable)
+			if(!p->owner || p->owner->status.reachable)
 				break;
 		}
 	}
@@ -184,7 +186,7 @@ subnet_t *lookup_subnet_ipv6(const ipv6_t *address) {
 
 		if(!maskcmp(address, &p->net.ipv6.address, p->net.ipv6.prefixlength)) {
 			r = p;
-			if(p->owner->status.reachable)
+			if(!p->owner || p->owner->status.reachable)
 				break;
 		}
 	}
@@ -204,21 +206,23 @@ void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
 
 	// Prepare environment variables to be passed to the script
 
-	char *envp[9] = {NULL};
-	xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
-	xasprintf(&envp[1], "DEVICE=%s", device ? : "");
-	xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
-	xasprintf(&envp[3], "NODE=%s", owner->name);
+	char *envp[10] = {NULL};
+	int n = 0;
+	xasprintf(&envp[n++], "NETNAME=%s", netname ? : "");
+	xasprintf(&envp[n++], "DEVICE=%s", device ? : "");
+	xasprintf(&envp[n++], "INTERFACE=%s", iface ? : "");
+	xasprintf(&envp[n++], "NODE=%s", owner->name);
 
 	if(owner != myself) {
 		sockaddr2str(&owner->address, &address, &port);
-		// 4 and 5 are reserved for SUBNET and WEIGHT
-		xasprintf(&envp[6], "REMOTEADDRESS=%s", address);
-		xasprintf(&envp[7], "REMOTEPORT=%s", port);
+		xasprintf(&envp[n++], "REMOTEADDRESS=%s", address);
+		xasprintf(&envp[n++], "REMOTEPORT=%s", port);
 		free(port);
 		free(address);
 	}
 
+	xasprintf(&envp[n++], "NAME=%s", myself->name);
+
 	name = up ? "subnet-up" : "subnet-down";
 
 	if(!subnet) {
@@ -234,12 +238,10 @@ void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
 				weight = empty;
 
 			// Prepare the SUBNET and WEIGHT variables
-			if(envp[4])
-				free(envp[4]);
-			if(envp[5])
-				free(envp[5]);
-			xasprintf(&envp[4], "SUBNET=%s", netstr);
-			xasprintf(&envp[5], "WEIGHT=%s", weight);
+			free(envp[n]);
+			free(envp[n + 1]);
+			xasprintf(&envp[n], "SUBNET=%s", netstr);
+			xasprintf(&envp[n + 1], "WEIGHT=%s", weight);
 
 			execute_script(name, envp);
 		}
@@ -253,14 +255,14 @@ void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
 				weight = empty;
 
 			// Prepare the SUBNET and WEIGHT variables
-			xasprintf(&envp[4], "SUBNET=%s", netstr);
-			xasprintf(&envp[5], "WEIGHT=%s", weight);
+			xasprintf(&envp[n], "SUBNET=%s", netstr);
+			xasprintf(&envp[n + 1], "WEIGHT=%s", weight);
 
 			execute_script(name, envp);
 		}
 	}
 
-	for(int i = 0; envp[i] && i < 8; i++)
+	for(int i = 0; envp[i] && i < 9; i++)
 		free(envp[i]);
 }
 
@@ -273,7 +275,7 @@ bool dump_subnets(connection_t *c) {
 
 		send_request(c, "%d %d %s %s",
 				CONTROL, REQ_DUMP_SUBNETS,
-				netstr, subnet->owner->name);
+				netstr, subnet->owner ? subnet->owner->name : "(broadcast)");
 	}
 
 	return send_request(c, "%d %d", CONTROL, REQ_DUMP_SUBNETS);