1/* $USAGI: ninfod.h,v 1.20 2002-12-19 15:51:16 yoshfuji Exp $ */
2/*
3 * Copyright (C) 2002 USAGI/WIDE Project.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the project nor the names of its contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30/*
31 * Author:
32 * 	YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
33 */
34
35/* definitions */
36#define NINFOD			"ninfod"
37#define NINFOD_PIDFILE		"/var/run/ninfod.pid"
38
39#define	MAX_ANYCAST_DELAY_TIME	1000000.0	/* 1 sec */
40
41#define MAX_DNSLABEL_SIZE	63
42#define MAX_DNSNAME_SIZE	255
43#define MAX_QUERY_SIZE		(sizeof(struct icmp6_nodeinfo)+MAX_DNSNAME_SIZE+2)
44#define MAX_REPLY_SIZE		1280-sizeof(struct ip6_hdr)
45
46#define MAX_SUPTYPES		32
47
48#define CHECKANDFILL_ARGS	struct packetcontext *p,\
49				char *subject, size_t subjlen,	\
50				unsigned int flags,		\
51				unsigned int *subj_if,		\
52				int reply
53#define INIT_ARGS		\
54				int forced
55
56struct packetcontext {
57	/* socket */
58	int sock;
59
60	/* query info */
61	struct sockaddr_storage addr;
62	socklen_t addrlen;
63	struct in6_pktinfo pktinfo;
64	char query[MAX_QUERY_SIZE];
65	int querylen;
66
67	/* reply info */
68	struct icmp6_nodeinfo reply;	/* common */
69	char *replydata;		/* data */
70	int replydatalen;
71
72	unsigned int delay;		/* (random) delay */
73};
74
75/* variables */
76extern int opt_v;		/* ninfod.c */
77extern int daemonized;		/* ninfod.c */
78extern int sock;		/* ninfod.c */
79extern int initialized;		/* ninfod_core.c */
80
81/* ninfod.c* */
82int ni_recv(struct packetcontext *p);
83int ni_send(struct packetcontext *p);
84
85/* ninfod_core.c */
86#if ENABLE_DEBUG
87void stderrlog(int priority, char *format, ...);
88# define DEBUG(pri, fmt, args...)	do {									\
89						int saved_errno = errno;					\
90						if (opt_v || pri != LOG_DEBUG) {				\
91							if (daemonized) {					\
92								syslog(pri, fmt, ## args);			\
93							} else {						\
94								stderrlog(pri, fmt, ## args);			\
95							}							\
96						}								\
97						errno = saved_errno;						\
98					} while(0)
99#else
100# define DEBUG(pri, fmt, args...)	do { ; } while(0)
101#endif
102
103#define ni_malloc(size)	({										\
104				size_t _size = (size);							\
105				void *p = malloc(_size);						\
106				DEBUG(LOG_DEBUG, "%s(): malloc(%zu) = %p\n", __func__, _size, p);	\
107				p;									\
108			})
109#define ni_free(p)	({										\
110				void *_p = (p);								\
111				int saved_errno = errno;						\
112				DEBUG(LOG_DEBUG, "%s(): free(%p)\n", __func__, _p);			\
113				free(_p);								\
114				errno = saved_errno;							\
115			})
116
117void init_core(int forced);
118int pr_nodeinfo(struct packetcontext *p);
119
120int pr_nodeinfo_unknown(CHECKANDFILL_ARGS);
121int pr_nodeinfo_refused(CHECKANDFILL_ARGS);
122int pr_nodeinfo_noop(CHECKANDFILL_ARGS);
123void init_nodeinfo_suptypes(INIT_ARGS);
124int pr_nodeinfo_suptypes(CHECKANDFILL_ARGS);
125
126/* ninfod_addrs.c */
127void init_nodeinfo_ipv6addr(INIT_ARGS);
128int pr_nodeinfo_ipv6addr(CHECKANDFILL_ARGS);
129void init_nodeinfo_ipv4addr(INIT_ARGS);
130int pr_nodeinfo_ipv4addr(CHECKANDFILL_ARGS);
131
132/* ninfod_name.c */
133int check_nigroup(const struct in6_addr *addr);
134void init_nodeinfo_nodename(INIT_ARGS);
135int pr_nodeinfo_nodename(CHECKANDFILL_ARGS);
136
137