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sx_prefix.h
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sx_prefix.h
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/*
* Copyright (c) 2007-2019 Alexandre Snarskii <snar@snar.spb.ru>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SX_PREFIX_H_
#define _SX_PREFIX_H_
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
typedef struct sx_prefix {
int family;
unsigned int masklen;
union {
struct in_addr addr;
struct in6_addr addr6;
unsigned char addrs[sizeof(struct in6_addr)];
} addr;
} sx_prefix_t;
typedef struct sx_radix_node {
struct sx_radix_node *parent, *l, *r, *son;
void *payload;
unsigned int isGlue:1;
unsigned int isAggregated:1;
unsigned int isAggregate:1;
unsigned int aggregateLow;
unsigned int aggregateHi;
struct sx_prefix *prefix;
} sx_radix_node_t;
typedef struct sx_radix_tree {
int family;
struct sx_radix_node *head;
} sx_radix_tree_t;
/* most common operations with the tree is to: lookup/insert/unlink */
struct sx_radix_node *sx_radix_tree_lookup(struct sx_radix_tree *tree,
struct sx_prefix *prefix);
struct sx_radix_node *sx_radix_tree_insert(struct sx_radix_tree *tree,
struct sx_prefix *prefix);
void sx_radix_tree_unlink(struct sx_radix_tree *t, struct sx_radix_node *n);
struct sx_radix_node *sx_radix_tree_lookup_exact(struct sx_radix_tree *tree,
struct sx_prefix *prefix);
struct sx_prefix *sx_prefix_alloc(struct sx_prefix *p);
void sx_prefix_free(struct sx_prefix *p);
void sx_radix_node_destroy(struct sx_radix_node *p);
void sx_prefix_adjust_masklen(struct sx_prefix *p);
struct sx_prefix *sx_prefix_new(int af, char *text);
int sx_prefix_parse(struct sx_prefix *p, int af, char *text);
int sx_prefix_range_parse(struct sx_radix_tree *t, int af, unsigned int ml, char *text);
int sx_prefix_fprint(FILE *f, struct sx_prefix *p);
int sx_prefix_snprintf(struct sx_prefix *p, char *rbuffer, int srb);
int sx_prefix_snprintf_sep(struct sx_prefix *p, char *rbuffer, int srb, char *);
void sx_prefix_snprintf_fmt(struct sx_prefix *p, FILE *f,
const char *name, const char *fmt, unsigned int aggregateLow,
unsigned int aggregateHi);
int sx_prefix_jsnprintf(struct sx_prefix *p, char *rbuffer, int srb);
struct sx_radix_tree *sx_radix_tree_new(int af);
struct sx_radix_node *sx_radix_node_new(struct sx_prefix *prefix);
struct sx_prefix *sx_prefix_overlay(struct sx_prefix *p, int n);
int sx_radix_tree_empty(struct sx_radix_tree *t);
void sx_radix_node_fprintf(struct sx_radix_node *node, void *udata);
int sx_radix_node_foreach(struct sx_radix_node *node,
void (*func)(struct sx_radix_node *, void *), void *udata);
int sx_radix_tree_foreach(struct sx_radix_tree *tree,
void (*func)(struct sx_radix_node *, void *), void *udata);
int sx_radix_tree_aggregate(struct sx_radix_tree *tree);
int sx_radix_tree_refine(struct sx_radix_tree *tree, unsigned refine);
int sx_radix_tree_refineLow(struct sx_radix_tree *tree, unsigned refineLow);
#ifndef HAVE_STRLCPY
size_t strlcpy(char *dst, const char *src, size_t size);
#endif
#endif