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      1 /*	$NetBSD: sockmisc.h,v 1.14 2025/03/07 15:55:29 christos Exp $	*/
      2 
      3 /* Id: sockmisc.h,v 1.9 2005/10/05 16:55:41 manubsd Exp */
      4 
      5 /*
      6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      7  * All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. Neither the name of the project nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef _SOCKMISC_H
     35 #define _SOCKMISC_H
     36 
     37 #ifndef IP_IPSEC_POLICY
     38 #define IP_IPSEC_POLICY 16	/* XXX: from linux/in.h */
     39 #endif
     40 
     41 #ifndef IPV6_IPSEC_POLICY
     42 #define IPV6_IPSEC_POLICY 34	/* XXX: from linux/???.h per
     43 				   "Tom Lendacky" <toml (at) us.ibm.com> */
     44 #endif
     45 
     46 union sockaddr_any {
     47 	struct sockaddr sa;
     48 	struct sockaddr_in sin;
     49 	struct sockaddr_in6 sin6;
     50 };
     51 
     52 struct netaddr {
     53 	union sockaddr_any sa;
     54 	unsigned long prefix;
     55 };
     56 
     57 extern const int niflags;
     58 
     59 #define CMPSADDR_MATCH		0
     60 #define CMPSADDR_WILDPORT_MATCH	1
     61 #define CMPSADDR_WOP_MATCH	2
     62 #define CMPSADDR_MISMATCH	3
     63 
     64 extern int cmpsaddr(const struct sockaddr *, const struct sockaddr *);
     65 
     66 extern struct sockaddr *getlocaladdr(struct sockaddr *);
     67 
     68 extern int recvfromto(int, void *, size_t, int,
     69     struct sockaddr *, socklen_t *, struct sockaddr *, unsigned int *);
     70 extern int sendfromto(int, const void *, size_t,
     71     struct sockaddr *, struct sockaddr *, int);
     72 
     73 extern int setsockopt_bypass(int, int);
     74 
     75 extern struct sockaddr *newsaddr(int);
     76 extern struct sockaddr *dupsaddr(struct sockaddr *);
     77 extern char *saddr2str(const struct sockaddr *);
     78 extern char *saddrwop2str(const struct sockaddr *);
     79 extern char *saddr2str_fromto(const char *format,
     80     const struct sockaddr *saddr,
     81     const struct sockaddr *daddr);
     82 extern struct sockaddr *str2saddr(char *, char *);
     83 extern void mask_sockaddr(struct sockaddr *, const struct sockaddr *, size_t);
     84 
     85 /* struct netaddr functions */
     86 extern char *naddrwop2str(const struct netaddr *naddr);
     87 extern char *naddrwop2str_fromto(const char *format,
     88     const struct netaddr *saddr, const struct netaddr *daddr);
     89 extern int naddr_score(const struct netaddr *naddr, const struct sockaddr *saddr);
     90 
     91 /* Some useful functions for sockaddr port manipulations. */
     92 extern uint16_t extract_port(const struct sockaddr *addr);
     93 extern uint16_t *set_port(struct sockaddr *addr, uint16_t new_port);
     94 extern uint16_t *get_port_ptr(struct sockaddr *addr);
     95 
     96 #endif /* _SOCKMISC_H */
     97