xref: /freebsd/usr.sbin/rtsold/rtsold.h (revision c66ec88fed842fbaad62c30d510644ceb7bd2d71)
1 /*	$KAME: rtsold.h,v 1.19 2003/04/16 09:48:15 itojun Exp $	*/
2 
3 /*-
4  * SPDX-License-Identifier: BSD-3-Clause
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  * $FreeBSD$
34  */
35 
36 struct script_msg {
37 	TAILQ_ENTRY(script_msg)	sm_next;
38 
39 	char *sm_msg;
40 };
41 
42 TAILQ_HEAD(script_msg_head_t, script_msg);
43 
44 struct ra_opt {
45 	TAILQ_ENTRY(ra_opt)	rao_next;
46 
47 	u_int8_t	rao_type;
48 	struct timespec	rao_expire;
49 	size_t		rao_len;
50 	void		*rao_msg;
51 };
52 
53 TAILQ_HEAD(rainfo_head, ra_opt);
54 
55 struct rainfo {
56 	TAILQ_ENTRY(rainfo)	rai_next;
57 
58 	struct ifinfo		*rai_ifinfo;
59 	struct sockaddr_in6	rai_saddr;
60 	TAILQ_HEAD(, ra_opt)	rai_ra_opt;
61 };
62 
63 /* Per-interface tracking info. */
64 struct ifinfo {
65 	TAILQ_ENTRY(ifinfo) ifi_next;	/* pointer to the next interface */
66 
67 	struct sockaddr_dl *sdl; /* link-layer address */
68 	char ifname[IFNAMSIZ];	/* interface name */
69 	uint32_t linkid;	/* link ID of this interface */
70 	int active;		/* interface status */
71 	int probeinterval;	/* interval of probe timer (if necessary) */
72 	int probetimer;		/* rest of probe timer */
73 	int mediareqok;		/* whether the IF supports SIOCGIFMEDIA */
74 	int managedconfig;	/* need a separate protocol for the "managed"
75 				 * configuration */
76 	int otherconfig;	/* need a separate protocol for the "other"
77 				 * configuration */
78 	int state;
79 	int probes;
80 	int dadcount;
81 	struct timespec timer;
82 	struct timespec expire;
83 #define IFI_DNSOPT_STATE_NOINFO		0
84 #define IFI_DNSOPT_STATE_RECEIVED     	1
85 	int ifi_rdnss;		/* RDNSS option state */
86 	int ifi_dnssl;		/* DNSSL option state */
87 
88 	int racnt;		/* total # of valid RAs it have got */
89 	TAILQ_HEAD(, rainfo)	ifi_rainfo;
90 
91 	size_t rs_datalen;
92 	u_char *rs_data;
93 };
94 
95 /* per interface status */
96 #define IFS_IDLE	0
97 #define IFS_DELAY	1
98 #define IFS_PROBE	2
99 #define IFS_DOWN	3
100 #define IFS_TENTATIVE	4
101 
102 /* Interface list */
103 extern TAILQ_HEAD(ifinfo_head_t, ifinfo) ifinfo_head;
104 
105 #define	DNSINFO_ORIGIN_LABEL	"slaac"
106 /*
107  * RFC 3542 API deprecates IPV6_PKTINFO in favor of
108  * IPV6_RECVPKTINFO
109  */
110 #ifndef IPV6_RECVPKTINFO
111 #ifdef IPV6_PKTINFO
112 #define IPV6_RECVPKTINFO	IPV6_PKTINFO
113 #endif
114 #endif
115 /*
116  * RFC 3542 API deprecates IPV6_HOPLIMIT in favor of
117  * IPV6_RECVHOPLIMIT
118  */
119 #ifndef IPV6_RECVHOPLIMIT
120 #ifdef IPV6_HOPLIMIT
121 #define IPV6_RECVHOPLIMIT	IPV6_HOPLIMIT
122 #endif
123 #endif
124 
125 #ifndef IN6ADDR_LINKLOCAL_ALLROUTERS_INIT
126 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT			\
127 	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	\
128 	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
129 #endif
130 
131 #define	TS_CMP(tsp, usp, cmp)						\
132 	(((tsp)->tv_sec == (usp)->tv_sec) ?				\
133 	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\
134 	    ((tsp)->tv_sec cmp (usp)->tv_sec))
135 #define	TS_ADD(tsp, usp, vsp)						\
136 	do {								\
137 		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
138 		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
139 		if ((vsp)->tv_nsec >= 1000000000L) {			\
140 			(vsp)->tv_sec++;				\
141 			(vsp)->tv_nsec -= 1000000000L;			\
142 		}							\
143 	} while (0)
144 #define	TS_SUB(tsp, usp, vsp)						\
145 	do {								\
146 		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
147 		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
148 		if ((vsp)->tv_nsec < 0) {				\
149 			(vsp)->tv_sec--;				\
150 			(vsp)->tv_nsec += 1000000000L;			\
151 		}							\
152 	} while (0)
153 
154 /* rtsold.c */
155 struct cap_channel;
156 extern struct timespec tm_max;
157 extern int dflag;
158 extern int aflag;
159 extern int Fflag;
160 extern int uflag;
161 extern const char *managedconf_script;
162 extern const char *otherconf_script;
163 extern const char *resolvconf_script;
164 extern struct cap_channel *capllflags, *capscript, *capsendmsg, *capsyslog;
165 
166 struct ifinfo *find_ifinfo(int);
167 struct rainfo *find_rainfo(struct ifinfo *, struct sockaddr_in6 *);
168 void rtsol_timer_update(struct ifinfo *);
169 extern void warnmsg(int, const char *, const char *, ...)
170      __attribute__((__format__(__printf__, 3, 4)));
171 extern int ra_opt_handler(struct ifinfo *);
172 
173 /* if.c */
174 struct nd_opt_hdr;
175 extern int ifinit(void);
176 extern int interface_up(char *);
177 extern int interface_status(struct ifinfo *);
178 extern int lladdropt_length(struct sockaddr_dl *);
179 extern void lladdropt_fill(struct sockaddr_dl *, struct nd_opt_hdr *);
180 extern struct sockaddr_dl *if_nametosdl(char *);
181 
182 /* rtsol.c */
183 extern int recvsockopen(void);
184 extern void rtsol_input(int);
185 
186 /* cap_llflags.c */
187 extern int cap_llflags_get(struct cap_channel *, const char *, int *);
188 
189 /* cap_script.c */
190 extern int cap_script_run(struct cap_channel *, const char *const *);
191 extern int cap_script_wait(struct cap_channel *, int *);
192 
193 /* cap_sendmsg.c */
194 extern int cap_probe_defrouters(struct cap_channel *, struct ifinfo *);
195 extern int cap_rssend(struct cap_channel *, struct ifinfo *);
196 
197 /* dump.c */
198 extern FILE *rtsold_init_dumpfile(const char *);
199 extern void rtsold_dump(FILE *);
200 extern const char *sec2str(const struct timespec *);
201 
202 /* rtsock.c */
203 extern int rtsock_open(void);
204 extern int rtsock_input(int);
205