/* $USAGI: ninfod.h,v 1.20 2002-12-19 15:51:16 yoshfuji Exp $ */

/*

 * Copyright (C) 2002 USAGI/WIDE Project.

 * 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.

 * 3. Neither the name of the project nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.

 */

/*

 * Author:

 * 	YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

 */

/* definitions */

#define NINFOD			"ninfod"

#define NINFOD_PIDFILE		"/var/run/ninfod.pid"

#define	MAX_ANYCAST_DELAY_TIME	1000000.0	/* 1 sec */

#define MAX_DNSLABEL_SIZE	63

#define MAX_DNSNAME_SIZE	255

#define MAX_QUERY_SIZE		(sizeof(struct icmp6_nodeinfo)+MAX_DNSNAME_SIZE+2)

#define MAX_REPLY_SIZE		1280-sizeof(struct ip6_hdr)

#define MAX_SUPTYPES		32

#define CHECKANDFILL_ARGS	struct packetcontext *p,\

				char *subject, size_t subjlen,	\

				unsigned int flags,		\

				unsigned int *subj_if,		\

				int reply

#define INIT_ARGS		\

				int forced

struct packetcontext {

	/* socket */

	int sock;

	/* query info */

	struct sockaddr_storage addr;

	socklen_t addrlen;

	struct in6_pktinfo pktinfo;

	char query[MAX_QUERY_SIZE];

	int querylen;

	/* reply info */

	struct icmp6_nodeinfo reply;	/* common */

	char *replydata;		/* data */

	int replydatalen;

	unsigned int delay;		/* (random) delay */

};

/* variables */

extern int opt_v;		/* ninfod.c */

extern int daemonized;		/* ninfod.c */

extern int sock;		/* ninfod.c */

extern int initialized;		/* ninfod_core.c */

/* ninfod.c* */

int ni_recv(struct packetcontext *p);

int ni_send(struct packetcontext *p);

/* ninfod_core.c */

#if ENABLE_DEBUG

void stderrlog(int priority, char *format, ...);

# define DEBUG(pri, fmt, args...)	do {									\

						int saved_errno = errno;					\

						if (opt_v || pri != LOG_DEBUG) {				\

							if (daemonized) {					\

								syslog(pri, fmt, ## args);			\

							} else {						\

								stderrlog(pri, fmt, ## args);			\

							}							\

						}								\

						errno = saved_errno;						\

					} while(0)

#else

# define DEBUG(pri, fmt, args...)	do { ; } while(0)

#endif

#define ni_malloc(size)	({										\

				size_t _size = (size);							\

				void *p = malloc(_size);						\

				DEBUG(LOG_DEBUG, "%s(): malloc(%zu) = %p\n", __func__, _size, p);	\

				p;									\

			})

#define ni_free(p)	({										\

				void *_p = (p);								\

				int saved_errno = errno;						\

				DEBUG(LOG_DEBUG, "%s(): free(%p)\n", __func__, _p);			\

				free(_p);								\

				errno = saved_errno;							\

			})

void init_core(int forced);

int pr_nodeinfo(struct packetcontext *p);

int pr_nodeinfo_unknown(CHECKANDFILL_ARGS);

int pr_nodeinfo_refused(CHECKANDFILL_ARGS);

int pr_nodeinfo_noop(CHECKANDFILL_ARGS);

void init_nodeinfo_suptypes(INIT_ARGS);

int pr_nodeinfo_suptypes(CHECKANDFILL_ARGS);

/* ninfod_addrs.c */

void init_nodeinfo_ipv6addr(INIT_ARGS);

int pr_nodeinfo_ipv6addr(CHECKANDFILL_ARGS);

void init_nodeinfo_ipv4addr(INIT_ARGS);

int pr_nodeinfo_ipv4addr(CHECKANDFILL_ARGS);

/* ninfod_name.c */

int check_nigroup(const struct in6_addr *addr);

void init_nodeinfo_nodename(INIT_ARGS);

int pr_nodeinfo_nodename(CHECKANDFILL_ARGS);