inetd.h revision 101474 
1/*
2 * Copyright (c) 1983, 1991, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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: head/usr.sbin/inetd/inetd.h 101474 2002-08-07 17:03:14Z ume $
34 */
35
36#include <sys/time.h>
37#include <sys/socket.h>
38#include <sys/un.h>
39#include <sys/queue.h>
40
41#include <netinet/in.h>
42
43#include <stdio.h>
44
45#define BUFSIZE 8192
46#define LINESIZ 72
47
48#define NORM_TYPE	0
49#define MUX_TYPE	1
50#define MUXPLUS_TYPE	2
51#define TTCP_TYPE	3
52#define FAITH_TYPE	4
53#define ISMUX(sep)	(((sep)->se_type == MUX_TYPE) || \
54			 ((sep)->se_type == MUXPLUS_TYPE))
55#define ISMUXPLUS(sep)	((sep)->se_type == MUXPLUS_TYPE)
56#define ISTTCP(sep)	((sep)->se_type == TTCP_TYPE)
57
58struct procinfo {
59	LIST_ENTRY(procinfo) pr_link;
60	pid_t		pr_pid;		/* child pid */
61	struct conninfo	*pr_conn;
62};
63
64struct conninfo {
65	LIST_ENTRY(conninfo) co_link;
66	struct sockaddr_storage	co_addr;	/* source address */
67	int		co_numchild;	/* current number of children */
68	struct procinfo	**co_proc;	/* array of child proc entry */
69};
70
71#define PERIPSIZE	256
72
73struct	servtab {
74	char	*se_service;		/* name of service */
75	int	se_socktype;		/* type of socket to use */
76	int	se_family;		/* address family */
77	char	*se_proto;		/* protocol used */
78	int	se_maxchild;		/* max number of children */
79	int	se_maxcpm;		/* max connects per IP per minute */
80	int	se_numchild;		/* current number of children */
81	pid_t	*se_pids;		/* array of child pids */
82	char	*se_user;		/* user name to run as */
83	char    *se_group;              /* group name to run as */
84#ifdef  LOGIN_CAP
85	char    *se_class;              /* login class name to run with */
86#endif
87	struct	biltin *se_bi;		/* if built-in, description */
88	char	*se_server;		/* server program */
89	char	*se_server_name;	/* server program without path */
90#define	MAXARGV 20
91	char	*se_argv[MAXARGV+1];	/* program arguments */
92#ifdef IPSEC
93	char	*se_policy;		/* IPsec policy string */
94#endif
95	int	se_fd;			/* open descriptor */
96	union {				/* bound address */
97		struct	sockaddr se_un_ctrladdr;
98		struct	sockaddr_in se_un_ctrladdr4;
99		struct	sockaddr_in6 se_un_ctrladdr6;
100	        struct  sockaddr_un se_un_ctrladdr_un;
101	} se_un;
102#define se_ctrladdr	se_un.se_un_ctrladdr
103#define se_ctrladdr4	se_un.se_un_ctrladdr4
104#define se_ctrladdr6	se_un.se_un_ctrladdr6
105#define se_ctrladdr_un   se_un.se_un_ctrladdr_un
106  	socklen_t	se_ctrladdr_size;
107	uid_t	se_sockuid;		/* Owner for unix domain socket */
108	gid_t	se_sockgid;		/* Group for unix domain socket */
109	mode_t	se_sockmode;		/* Mode for unix domain socket */
110	u_char	se_type;		/* type: normal, mux, or mux+ */
111	u_char	se_checked;		/* looked at during merge */
112	u_char	se_accept;		/* i.e., wait/nowait mode */
113	u_char	se_rpc;			/* ==1 if RPC service */
114	int	se_rpc_prog;		/* RPC program number */
115	u_int	se_rpc_lowvers;		/* RPC low version */
116	u_int	se_rpc_highvers;	/* RPC high version */
117	int	se_count;		/* number started since se_time */
118	struct	timeval se_time;	/* start of se_count */
119	struct	servtab *se_next;
120	struct se_flags {
121		u_int se_nomapped : 1;
122		u_int se_reset : 1;
123	} se_flags;
124	int	se_maxperip;		/* max number of children per src */
125	LIST_HEAD(, conninfo) se_conn[PERIPSIZE];
126};
127
128#define	se_nomapped		se_flags.se_nomapped
129#define	se_reset		se_flags.se_reset
130
131int		check_loop(const struct sockaddr *, const struct servtab *sep);
132int		getvalue(const char *, int *, const char *);
133char	       *newstr(const char *);
134void		inetd_setproctitle(const char *, int);
135void		print_service(const char *, const struct servtab *);
136char	       *sskip(char **);
137char	       *skip(char **);
138struct servtab *tcpmux(int);
139
140extern int	 debug;
141extern struct servtab *servtab;
142
143typedef void (bi_fn_t)(int, struct servtab *);
144
145struct biltin {
146	const char *bi_service;		/* internally provided service name */
147	int	bi_socktype;		/* type of socket supported */
148	short	bi_fork;		/* 1 if should fork before call */
149	int	bi_maxchild;		/* max number of children, -1=default */
150	bi_fn_t	*bi_fn;			/* function which performs it */
151};
152