subnet-up/down hooks

[tinc] / src / subnet.c

diff --git a/src/subnet.c b/src/subnet.c
index aca1912..984cc7f 100644 (file)
--- a/src/subnet.c
+++ b/src/subnet.c
@@ -23,10 +23,12 @@
 #include "system.h"
 
 #include "avl_tree.h"
+#include "device.h"
 #include "logger.h"
 #include "net.h"
 #include "netutl.h"
 #include "node.h"
+#include "process.h"
 #include "subnet.h"
 #include "utils.h"
 #include "xalloc.h"
@@ -385,6 +387,52 @@ subnet_t *lookup_subnet_ipv6(const ipv6_t *address)
        return p;
 }
 
+void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
+       avl_node_t *node;
+       int i;
+       char *envp[8];
+       char netstr[MAXNETSTR + 7] = "SUBNET=";
+       char *name, *address, *port;
+
+       asprintf(&envp[0], "NETNAME=%s", netname ? : "");
+       asprintf(&envp[1], "DEVICE=%s", device ? : "");
+       asprintf(&envp[2], "INTERFACE=%s", iface ? : "");
+       asprintf(&envp[3], "NODE=%s", owner->name);
+       if(owner != myself) {
+               sockaddr2str(&owner->address, &address, &port);
+               asprintf(&envp[4], "REMOTEADDRESS=%s", address);
+               asprintf(&envp[5], "REMOTEPORT=%s", port);
+               envp[6] = netstr;
+               envp[7] = NULL;
+       } else {
+               envp[4] = netstr;
+               envp[5] = NULL;
+       }
+
+       name = up ? "subnet-up" : "subnet-down";
+
+       if(!subnet) {
+               for(node = owner->subnet_tree->head; node; node = node->next) {
+                       subnet = node->data;
+                       if(!net2str(netstr + 7, sizeof netstr - 7, subnet))
+                               continue;
+                       execute_script(name, envp);
+               }
+       } else {
+               if(net2str(netstr + 7, sizeof netstr - 7, subnet))
+                       execute_script(name, envp);
+       }
+
+       net2str(netstr, sizeof netstr, subnet);
+       envp[6] = envp[7] = NULL;
+       
+       for(i = 0; i < (owner != myself ? 6 : 4); i++)
+               free(envp[i]);
+
+       free(address);
+       free(port);
+}
+
 void dump_subnets(void)
 {
        char netstr[MAXNETSTR];