/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1983, 1991, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/time.h> #include <sys/socket.h> #include <sys/un.h> #include <sys/queue.h> #include <netinet/in.h> #include <stdio.h> #define BUFSIZE 8192 #define LINESIZ 72 #define NORM_TYPE 0 #define MUX_TYPE 1 #define MUXPLUS_TYPE 2 #define FAITH_TYPE 4 #define ISMUX(sep) (((sep)->se_type == MUX_TYPE) || \ ((sep)->se_type == MUXPLUS_TYPE)) #define ISMUXPLUS(sep) ((sep)->se_type == MUXPLUS_TYPE) struct procinfo { LIST_ENTRY(procinfo) pr_link; pid_t pr_pid; /* child pid */ struct conninfo *pr_conn; }; struct conninfo { LIST_ENTRY(conninfo) co_link; struct sockaddr_storage co_addr; /* source address */ int co_numchild; /* current number of children */ struct procinfo **co_proc; /* array of child proc entry */ }; #define PERIPSIZE 256 struct stabchild { LIST_ENTRY(stabchild) sc_link; pid_t sc_pid; }; struct servtab { char *se_service; /* name of service */ int se_socktype; /* type of socket to use */ int se_family; /* address family */ char *se_proto; /* protocol used */ int se_maxchild; /* max number of children */ int se_maxcpm; /* max connects per IP per minute */ int se_numchild; /* current number of children */ char *se_user; /* user name to run as */ char *se_group; /* group name to run as */ #ifdef LOGIN_CAP char *se_class; /* login class name to run with */ #endif struct biltin *se_bi; /* if built-in, description */ char *se_server; /* server program */ char *se_server_name; /* server program without path */ #define MAXARGV 20 char *se_argv[MAXARGV+1]; /* program arguments */ #ifdef IPSEC char *se_policy; /* IPsec policy string */ #endif int se_fd; /* open descriptor */ union { /* bound address */ struct sockaddr se_un_ctrladdr; struct sockaddr_in se_un_ctrladdr4; struct sockaddr_in6 se_un_ctrladdr6; struct sockaddr_un se_un_ctrladdr_un; } se_un; #define se_ctrladdr se_un.se_un_ctrladdr #define se_ctrladdr4 se_un.se_un_ctrladdr4 #define se_ctrladdr6 se_un.se_un_ctrladdr6 #define se_ctrladdr_un se_un.se_un_ctrladdr_un socklen_t se_ctrladdr_size; uid_t se_sockuid; /* Owner for unix domain socket */ gid_t se_sockgid; /* Group for unix domain socket */ mode_t se_sockmode; /* Mode for unix domain socket */ u_char se_type; /* type: normal, mux, or mux+ */ u_char se_checked; /* looked at during merge */ u_char se_accept; /* i.e., wait/nowait mode */ u_char se_rpc; /* ==1 if RPC service */ int se_rpc_prog; /* RPC program number */ u_int se_rpc_lowvers; /* RPC low version */ u_int se_rpc_highvers; /* RPC high version */ int se_count; /* number started since se_time */ struct timespec se_time; /* start of se_count */ struct servtab *se_next; struct se_flags { u_int se_nomapped : 1; u_int se_reset : 1; } se_flags; int se_maxperip; /* max number of children per src */ LIST_HEAD(, conninfo) se_conn[PERIPSIZE]; LIST_HEAD(, stabchild) se_children; }; #define se_nomapped se_flags.se_nomapped #define se_reset se_flags.se_reset #define SERVTAB_AT_LIMIT(sep) \ ((sep)->se_maxchild > 0 && (sep)->se_numchild == (sep)->se_maxchild) #define SERVTAB_EXCEEDS_LIMIT(sep) \ ((sep)->se_maxchild > 0 && (sep)->se_numchild >= (sep)->se_maxchild) int check_loop(const struct sockaddr *, const struct servtab *sep); void inetd_setproctitle(const char *, int); struct servtab *tcpmux(int); extern int debug; extern struct servtab *servtab; typedef void (bi_fn_t)(int, struct servtab *); struct biltin { const char *bi_service; /* internally provided service name */ int bi_socktype; /* type of socket supported */ short bi_fork; /* 1 if should fork before call */ int bi_maxchild; /* max number of children, -1=default */ bi_fn_t *bi_fn; /* function which performs it */ }; extern struct biltin biltins[];
