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[meshlink] / src / subnet.c

diff --git a/src/subnet.c b/src/subnet.c
index 984cc7f8ece644ff2f2ec80cd6054366efe3fba1..9d84ec2b946427b60d36d03cfd89a6e35198fded 100644 (file)
--- a/src/subnet.c
+++ b/src/subnet.c
@@ -1,7 +1,7 @@
 /*
     subnet.c -- handle subnet lookups and lists
-    Copyright (C) 2000-2004 Guus Sliepen <guus@tinc-vpn.org>,
-                  2000-2004 Ivo Timmermans <ivo@tinc-vpn.org>
+    Copyright (C) 2000-2006 Guus Sliepen <guus@tinc-vpn.org>,
+                  2000-2005 Ivo Timmermans
 
     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
@@ -22,7 +22,7 @@
 
 #include "system.h"
 
-#include "avl_tree.h"
+#include "splay_tree.h"
 #include "device.h"
 #include "logger.h"
 #include "net.h"
@@ -35,7 +35,7 @@
 
 /* lists type of subnet */
 
-avl_tree_t *subnet_tree;
+splay_tree_t *subnet_tree;
 
 /* Subnet comparison */
 
@@ -117,28 +117,28 @@ void init_subnets(void)
 {
        cp();
 
-       subnet_tree = avl_alloc_tree((avl_compare_t) subnet_compare, (avl_action_t) free_subnet);
+       subnet_tree = splay_alloc_tree((splay_compare_t) subnet_compare, (splay_action_t) free_subnet);
 }
 
 void exit_subnets(void)
 {
        cp();
 
-       avl_delete_tree(subnet_tree);
+       splay_delete_tree(subnet_tree);
 }
 
-avl_tree_t *new_subnet_tree(void)
+splay_tree_t *new_subnet_tree(void)
 {
        cp();
 
-       return avl_alloc_tree((avl_compare_t) subnet_compare, NULL);
+       return splay_alloc_tree((splay_compare_t) subnet_compare, NULL);
 }
 
-void free_subnet_tree(avl_tree_t *subnet_tree)
+void free_subnet_tree(splay_tree_t *subnet_tree)
 {
        cp();
 
-       avl_delete_tree(subnet_tree);
+       splay_delete_tree(subnet_tree);
 }
 
 /* Allocating and freeing space for subnets */
@@ -165,16 +165,16 @@ void subnet_add(node_t *n, subnet_t *subnet)
 
        subnet->owner = n;
 
-       avl_insert(subnet_tree, subnet);
-       avl_insert(n->subnet_tree, subnet);
+       splay_insert(subnet_tree, subnet);
+       splay_insert(n->subnet_tree, subnet);
 }
 
 void subnet_del(node_t *n, subnet_t *subnet)
 {
        cp();
 
-       avl_delete(n->subnet_tree, subnet);
-       avl_delete(subnet_tree, subnet);
+       splay_delete(n->subnet_tree, subnet);
+       splay_delete(subnet_tree, subnet);
 }
 
 /* Ascii representation of subnets */
@@ -247,6 +247,11 @@ bool net2str(char *netstr, int len, const subnet_t *subnet)
 {
        cp();
 
+       if(!netstr || !subnet) {
+               logger(LOG_ERR, _("net2str() was called with netstr=%p, subnet=%p!\n"), netstr, subnet);
+               return false;
+       }
+
        switch (subnet->type) {
                case SUBNET_MAC:
                        snprintf(netstr, len, "%hx:%hx:%hx:%hx:%hx:%hx",
@@ -295,7 +300,7 @@ subnet_t *lookup_subnet(const node_t *owner, const subnet_t *subnet)
 {
        cp();
 
-       return avl_search(owner->subnet_tree, subnet);
+       return splay_search(owner->subnet_tree, subnet);
 }
 
 subnet_t *lookup_subnet_mac(const mac_t *address)
@@ -308,7 +313,7 @@ subnet_t *lookup_subnet_mac(const mac_t *address)
        subnet.net.mac.address = *address;
        subnet.owner = NULL;
 
-       p = avl_search(subnet_tree, &subnet);
+       p = splay_search(subnet_tree, &subnet);
 
        return p;
 }
@@ -327,7 +332,7 @@ subnet_t *lookup_subnet_ipv4(const ipv4_t *address)
        do {
                /* Go find subnet */
 
-               p = avl_search_closest_smaller(subnet_tree, &subnet);
+               p = splay_search_closest_smaller(subnet_tree, &subnet);
 
                /* Check if the found subnet REALLY matches */
 
@@ -337,7 +342,7 @@ subnet_t *lookup_subnet_ipv4(const ipv4_t *address)
                                break;
                        }
 
-                       if(!maskcmp(address, &p->net.ipv4.address, p->net.ipv4.prefixlength, sizeof(ipv4_t)))
+                       if(!maskcmp(address, &p->net.ipv4.address, p->net.ipv4.prefixlength))
                                break;
                        else {
                                /* Otherwise, see if there is a bigger enclosing subnet */
@@ -365,7 +370,7 @@ subnet_t *lookup_subnet_ipv6(const ipv6_t *address)
        do {
                /* Go find subnet */
 
-               p = avl_search_closest_smaller(subnet_tree, &subnet);
+               p = splay_search_closest_smaller(subnet_tree, &subnet);
 
                /* Check if the found subnet REALLY matches */
 
@@ -373,7 +378,7 @@ subnet_t *lookup_subnet_ipv6(const ipv6_t *address)
                        if(p->type != SUBNET_IPV6)
                                return NULL;
 
-                       if(!maskcmp(address, &p->net.ipv6.address, p->net.ipv6.prefixlength, sizeof(ipv6_t)))
+                       if(!maskcmp(address, &p->net.ipv6.address, p->net.ipv6.prefixlength))
                                break;
                        else {
                                /* Otherwise, see if there is a bigger enclosing subnet */
@@ -388,7 +393,7 @@ subnet_t *lookup_subnet_ipv6(const ipv6_t *address)
 }
 
 void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
-       avl_node_t *node;
+       splay_node_t *node;
        int i;
        char *envp[8];
        char netstr[MAXNETSTR + 7] = "SUBNET=";
@@ -398,6 +403,7 @@ void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
        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);
@@ -423,32 +429,31 @@ void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
                        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);
+       if(owner != myself) {
+               free(address);
+               free(port);
+       }
 }
 
-void dump_subnets(void)
+int dump_subnets(struct evbuffer *out)
 {
        char netstr[MAXNETSTR];
        subnet_t *subnet;
-       avl_node_t *node;
+       splay_node_t *node;
 
        cp();
 
-       logger(LOG_DEBUG, _("Subnet list:"));
-
        for(node = subnet_tree->head; node; node = node->next) {
                subnet = node->data;
                if(!net2str(netstr, sizeof netstr, subnet))
                        continue;
-               logger(LOG_DEBUG, _(" %s owner %s"), netstr, subnet->owner->name);
+               if(evbuffer_add_printf(out, _(" %s owner %s\n"),
+                                                          netstr, subnet->owner->name) == -1)
+                       return errno;
        }
 
-       logger(LOG_DEBUG, _("End of subnet list."));
+       return 0;
 }