usr.sbin/inetd/inetd.h

   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  * $DragonFly: src/usr.sbin/inetd/inetd.h,v 1.3 2003/11/03 19:31:37 eirikn Exp $
  35  */
  36
  37 #include <sys/time.h>
  38 #include <sys/socket.h>
  39 #include <sys/un.h>
  40 #include <sys/queue.h>
  41
  42 #include <netinet/in.h>
  43
  44 #include <stdio.h>
  45
  46 #define BUFSIZE 8192
  47 #define LINESIZ 72
  48
  49 #define NORM_TYPE       0
  50 #define MUX_TYPE        1
  51 #define MUXPLUS_TYPE    2
  52 #define TTCP_TYPE       3
  53 #define FAITH_TYPE      4
  54 #define ISMUX(sep)      (((sep)->se_type == MUX_TYPE) || \
  55                          ((sep)->se_type == MUXPLUS_TYPE))
  56 #define ISMUXPLUS(sep)  ((sep)->se_type == MUXPLUS_TYPE)
  57 #define ISTTCP(sep)     ((sep)->se_type == TTCP_TYPE)
  58
  59 struct procinfo {
  60         LIST_ENTRY(procinfo) pr_link;
  61         pid_t           pr_pid;         /* child pid */
  62         struct conninfo *pr_conn;
  63 };
  64
  65 struct conninfo {
  66         LIST_ENTRY(conninfo) co_link;
  67         struct sockaddr_storage co_addr;        /* source address */
  68         int             co_numchild;    /* current number of children */
  69         struct procinfo **co_proc;      /* array of child proc entry */
  70 };
  71
  72 #define PERIPSIZE       256
  73
  74 struct  servtab {
  75         char    *se_service;            /* name of service */
  76         int     se_socktype;            /* type of socket to use */
  77         int     se_family;              /* address family */
  78         char    *se_proto;              /* protocol used */
  79         int     se_maxchild;            /* max number of children */
  80         int     se_maxcpm;              /* max connects per IP per minute */
  81         int     se_numchild;            /* current number of children */
  82         pid_t   *se_pids;               /* array of child pids */
  83         char    *se_user;               /* user name to run as */
  84         char    *se_group;              /* group name to run as */
  85 #ifdef  LOGIN_CAP
  86         char    *se_class;              /* login class name to run with */
  87 #endif
  88         struct  biltin *se_bi;          /* if built-in, description */
  89         char    *se_server;             /* server program */
  90         char    *se_server_name;        /* server program without path */
  91 #define MAXARGV 20
  92         char    *se_argv[MAXARGV+1];    /* program arguments */
  93 #ifdef IPSEC
  94         char    *se_policy;             /* IPsec policy string */
  95 #endif
  96         int     se_fd;                  /* open descriptor */
  97         union {                         /* bound address */
  98                 struct  sockaddr se_un_ctrladdr;
  99                 struct  sockaddr_in se_un_ctrladdr4;
 100                 struct  sockaddr_in6 se_un_ctrladdr6;
 101                 struct  sockaddr_un se_un_ctrladdr_un;
 102         } se_un;
 103 #define se_ctrladdr     se_un.se_un_ctrladdr
 104 #define se_ctrladdr4    se_un.se_un_ctrladdr4
 105 #define se_ctrladdr6    se_un.se_un_ctrladdr6
 106 #define se_ctrladdr_un   se_un.se_un_ctrladdr_un
 107         socklen_t       se_ctrladdr_size;
 108         uid_t   se_sockuid;             /* Owner for unix domain socket */
 109         gid_t   se_sockgid;             /* Group for unix domain socket */
 110         mode_t  se_sockmode;            /* Mode for unix domain socket */
 111         u_char  se_type;                /* type: normal, mux, or mux+ */
 112         u_char  se_checked;             /* looked at during merge */
 113         u_char  se_accept;              /* i.e., wait/nowait mode */
 114         u_char  se_rpc;                 /* ==1 if RPC service */
 115         int     se_rpc_prog;            /* RPC program number */
 116         u_int   se_rpc_lowvers;         /* RPC low version */
 117         u_int   se_rpc_highvers;        /* RPC high version */
 118         int     se_count;               /* number started since se_time */
 119         struct  timeval se_time;        /* start of se_count */
 120         struct  servtab *se_next;
 121         struct se_flags {
 122                 u_int se_nomapped : 1;
 123                 u_int se_reset : 1;
 124         } se_flags;
 125         int     se_maxperip;            /* max number of children per src */
 126         LIST_HEAD(, conninfo) se_conn[PERIPSIZE];
 127 };
 128
 129 #define se_nomapped             se_flags.se_nomapped
 130 #define se_reset                se_flags.se_reset
 131
 132 int             check_loop(const struct sockaddr *, const struct servtab *sep);
 133 int             getvalue(const char *, int *, const char *);
 134 char           *newstr(const char *);
 135 void            inetd_setproctitle(const char *, int);
 136 void            print_service(const char *, const struct servtab *);
 137 char           *sskip(char **);
 138 char           *skip(char **);
 139 struct servtab *tcpmux(int);
 140
 141 extern int       debug;
 142 extern struct servtab *servtab;
 143
 144 typedef void (bi_fn_t)(int, struct servtab *);
 145
 146 struct biltin {
 147         const char *bi_service;         /* internally provided service name */
 148         int     bi_socktype;            /* type of socket supported */
 149         short   bi_fork;                /* 1 if should fork before call */
 150         int     bi_maxchild;            /* max number of children, -1=default */
 151         bi_fn_t *bi_fn;                 /* function which performs it */
 152 };