xref: /dragonfly/usr.sbin/inetd/inetd.h (revision 984263bc)
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: src/usr.sbin/inetd/inetd.h,v 1.4.2.4 2002/08/21 10:00:24 ume Exp $
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 
58 struct procinfo {
59 	LIST_ENTRY(procinfo) pr_link;
60 	pid_t		pr_pid;		/* child pid */
61 	struct conninfo	*pr_conn;
62 };
63 
64 struct 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 
73 struct	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 
131 int		check_loop __P((const struct sockaddr *, const struct servtab *sep));
132 int		getvalue __P((const char *, int *, const char *));
133 char	       *newstr __P((const char *));
134 void		inetd_setproctitle __P((const char *, int));
135 void		print_service __P((const char *, const struct servtab *));
136 char	       *sskip __P((char **));
137 char	       *skip __P((char **));
138 struct servtab *tcpmux __P((int));
139 
140 extern int	 debug;
141 extern struct servtab *servtab;
142 
143 typedef void (bi_fn_t) __P((int, struct servtab *));
144 
145 struct 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