+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
#include <string.h>
#include <stdlib.h>
#include "utils.h"
-int
-avl_strcmp(const void *k1, const void *k2, void *ptr)
-{
- return strcmp(k1, k2);
-}
+#include <arpa/inet.h>
+#include <netinet/in.h>
void
-__vlist_init(struct vlist_tree *tree, avl_tree_comp cmp,
- vlist_update_cb update, int offset)
+__vlist_simple_init(struct vlist_simple_tree *tree, int offset)
{
- tree->key_offset = offset;
- tree->update = update;
+ INIT_LIST_HEAD(&tree->list);
tree->version = 1;
-
- avl_init(&tree->avl, cmp, 0, tree);
+ tree->head_offset = offset;
}
void
-vlist_delete(struct vlist_tree *tree, struct vlist_node *node)
+vlist_simple_delete(struct vlist_simple_tree *tree, struct vlist_simple_node *node)
{
- if (!tree->no_delete)
- avl_delete(&tree->avl, &node->avl);
- tree->update(tree, NULL, node);
+ char *ptr;
+
+ list_del(&node->list);
+ ptr = (char *) node - tree->head_offset;
+ free(ptr);
}
void
-vlist_add(struct vlist_tree *tree, struct vlist_node *node)
+vlist_simple_flush(struct vlist_simple_tree *tree)
{
- struct vlist_node *old_node = NULL;
- struct avl_node *anode;
- void *key = (char *) node + tree->key_offset;
-
- node->avl.key = key;
- node->version = tree->version;
+ struct vlist_simple_node *n, *tmp;
- anode = avl_find(&tree->avl, key);
- if (anode) {
- old_node = container_of(anode, struct vlist_node, avl);
- if (tree->keep_old || tree->no_delete)
- goto update_only;
+ list_for_each_entry_safe(n, tmp, &tree->list, list) {
+ if ((n->version == tree->version || n->version == -1) &&
+ tree->version != -1)
+ continue;
- avl_delete(&tree->avl, anode);
+ vlist_simple_delete(tree, n);
}
-
- avl_insert(&tree->avl, &node->avl);
-
-update_only:
- tree->update(tree, node, old_node);
}
void
-vlist_flush(struct vlist_tree *tree)
+vlist_simple_replace(struct vlist_simple_tree *dest, struct vlist_simple_tree *old)
{
- struct vlist_node *node, *tmp;
-
- avl_for_each_element_safe(&tree->avl, node, avl, tmp) {
- if (node->version == tree->version)
- continue;
+ struct vlist_simple_node *n, *tmp;
- vlist_delete(tree, node);
+ vlist_simple_update(dest);
+ list_for_each_entry_safe(n, tmp, &old->list, list) {
+ list_del(&n->list);
+ vlist_simple_add(dest, n);
}
+ vlist_simple_flush(dest);
}
void
-vlist_flush_all(struct vlist_tree *tree)
+vlist_simple_flush_all(struct vlist_simple_tree *tree)
{
- tree->version++;
- vlist_flush(tree);
+ tree->version = -1;
+ vlist_simple_flush(tree);
}
-
-void
-__vlist_simple_init(struct vlist_simple_tree *tree, int offset)
+unsigned int
+parse_netmask_string(const char *str, bool v6)
{
- INIT_LIST_HEAD(&tree->list);
- tree->version = 1;
- tree->head_offset = offset;
-}
+ struct in_addr addr;
+ unsigned int ret;
+ char *err = NULL;
-void
-vlist_simple_delete(struct vlist_simple_tree *tree, struct vlist_simple_node *node)
-{
- char *ptr;
+ if (!strchr(str, '.')) {
+ ret = strtoul(str, &err, 0);
+ if (err && *err)
+ goto error;
- list_del(&node->list);
- ptr = (char *) node - tree->head_offset;
- free(ptr);
+ return ret;
+ }
+
+ if (v6)
+ goto error;
+
+ if (inet_aton(str, &addr) != 1)
+ goto error;
+
+ return 32 - fls(~(ntohl(addr.s_addr)));
+
+error:
+ return ~0;
}
-void
-vlist_simple_flush(struct vlist_simple_tree *tree)
+bool
+split_netmask(char *str, unsigned int *netmask, bool v6)
{
- struct vlist_simple_node *n, *tmp;
+ char *delim = strchr(str, '/');
- list_for_each_entry_safe(n, tmp, &tree->list, list) {
- if (n->version == tree->version)
- continue;
+ if (delim) {
+ *(delim++) = 0;
- vlist_simple_delete(tree, n);
+ *netmask = parse_netmask_string(delim, v6);
}
+ return true;
}
-void
-vlist_simple_flush_all(struct vlist_simple_tree *tree)
+int
+parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
{
- tree->version++;
- vlist_simple_flush(tree);
+ char *astr = alloca(strlen(str) + 1);
+
+ strcpy(astr, str);
+ if (!split_netmask(astr, netmask, af == AF_INET6))
+ return 0;
+
+ if (af == AF_INET6) {
+ if (*netmask > 128)
+ return 0;
+ } else {
+ if (*netmask > 32)
+ return 0;
+ }
+
+ return inet_pton(af, astr, addr);
}