X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=utils.c;h=986cee96e147f062f24bb03a527716d71b57d8c3;hp=15f0525941b9b31792dc3a467f720cea7e1f9df2;hb=6094417533d97662f693d134ab04595a292de30c;hpb=69b2dcb92b8402b9c6df4d6a041a890fe6468e18

diff --git a/utils.c b/utils.c
index 15f0525..986cee9 100644
--- a/utils.c
+++ b/utils.c
@@ -1,72 +1,131 @@
+/*
+ * 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)
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
+void
+__vlist_simple_init(struct vlist_simple_tree *tree, int offset)
 {
-	return strcmp(k1, k2);
+	INIT_LIST_HEAD(&tree->list);
+	tree->version = 1;
+	tree->head_offset = offset;
 }
 
-static int
-vlist_cmp(const void *k1, const void *k2, void *ptr)
+void
+vlist_simple_delete(struct vlist_simple_tree *tree, struct vlist_simple_node *node)
 {
-	struct vlist_tree *vl = ptr;
-	return memcmp(k1, k2, vl->data_len);
+	char *ptr;
+
+	list_del(&node->list);
+	ptr = (char *) node - tree->head_offset;
+	free(ptr);
 }
 
 void
-__vlist_init(struct vlist_tree *tree, vlist_update_cb update, int offset, int len)
+vlist_simple_flush(struct vlist_simple_tree *tree)
 {
-	tree->data_offset = offset;
-	tree->data_len = len;
-	tree->update = update;
-	tree->version = 1;
+	struct vlist_simple_node *n, *tmp;
 
-	avl_init(&tree->avl, vlist_cmp, 0, tree);
+	list_for_each_entry_safe(n, tmp, &tree->list, list) {
+		if ((n->version == tree->version || n->version == -1) &&
+		    tree->version != -1)
+			continue;
+
+		vlist_simple_delete(tree, n);
+	}
 }
 
 void
-vlist_delete(struct vlist_tree *tree, struct vlist_node *node)
+vlist_simple_replace(struct vlist_simple_tree *dest, struct vlist_simple_tree *old)
 {
-	avl_delete(&tree->avl, &node->avl);
-	tree->update(tree, NULL, node);
+	struct vlist_simple_node *n, *tmp;
+
+	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_add(struct vlist_tree *tree, struct vlist_node *node)
+vlist_simple_flush_all(struct vlist_simple_tree *tree)
+{
+	tree->version = -1;
+	vlist_simple_flush(tree);
+}
+
+unsigned int
+parse_netmask_string(const char *str, bool v6)
 {
-	struct vlist_node *old_node = NULL;
-	struct avl_node *anode;
+	struct in_addr addr;
+	unsigned int ret;
+	char *err = NULL;
 
-	node->avl.key = (char *) node + tree->data_offset;
-	node->version = tree->version;
+	if (!strchr(str, '.')) {
+		ret = strtoul(str, &err, 0);
+		if (err && *err)
+			goto error;
 
-	anode = avl_find(&tree->avl, (char *) node + tree->data_offset);
-	if (anode) {
-		old_node = container_of(anode, struct vlist_node, avl);
-		avl_delete(&tree->avl, anode);
+		return ret;
 	}
 
-	avl_insert(&tree->avl, &node->avl);
-	tree->update(tree, node, old_node);
+	if (v6)
+		goto error;
+
+	if (inet_aton(str, &addr) != 1)
+		goto error;
+
+	return 32 - fls(~(ntohl(addr.s_addr)));
+
+error:
+	return ~0;
 }
 
-void
-vlist_flush(struct vlist_tree *tree)
+bool
+split_netmask(char *str, unsigned int *netmask, bool v6)
 {
-	struct vlist_node *node, *tmp;
+	char *delim = strchr(str, '/');
 
-	avl_for_each_element_safe(&tree->avl, node, avl, tmp) {
-		if (node->version == tree->version)
-			continue;
+	if (delim) {
+		*(delim++) = 0;
 
-		vlist_delete(tree, node);
+		*netmask = parse_netmask_string(delim, v6);
 	}
+	return true;
 }
 
-void
-vlist_flush_all(struct vlist_tree *tree)
+int
+parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
 {
-	tree->version++;
-	vlist_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);
 }