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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* tests/t_inetd.c */
/*
* Copyright 1991 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
/*
* A simple program to simulate starting a process from inetd.
*
* Unlike a proper inetd situation, environment variables are passed
* to the client.
*
* usage: t_inetd port program argv0 ...
*/
#include "autoconf.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "com_err.h"
char *progname;
static void usage()
{
fprintf(stderr, "%s: port program argv0 argv1 ...\n", progname);
exit(1);
}
int
main(argc, argv)
int argc;
char **argv;
{
unsigned short port;
char *path;
int sock, acc;
int one = 1;
struct sockaddr_in l_inaddr, f_inaddr; /* local, foreign address */
socklen_t namelen = sizeof(f_inaddr);
progname = argv[0];
if(argc <= 3) usage();
if(atoi(argv[1]) == 0) usage();
port = htons(atoi(argv[1]));
path = argv[2];
if ((sock = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
com_err(progname, errno, "creating socket");
exit(3);
}
(void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&one,
sizeof (one));
memset(&l_inaddr, 0, sizeof(l_inaddr));
l_inaddr.sin_family = AF_INET;
l_inaddr.sin_addr.s_addr = 0;
l_inaddr.sin_port = port;
if (bind(sock, (struct sockaddr *)&l_inaddr, sizeof(l_inaddr))) {
com_err(progname, errno, "binding socket");
exit(3);
}
if (listen(sock, 1) == -1) {
com_err(progname, errno, "listening");
exit(3);
}
printf("Ready!\n");
fflush(stdout);
if ((acc = accept(sock, (struct sockaddr *)&f_inaddr,
&namelen)) == -1) {
com_err(progname, errno, "accepting");
exit(3);
}
dup2(acc, 0);
dup2(acc, 1);
dup2(acc, 2);
close(sock);
sock = 0;
if(execv(path, &argv[3]))
fprintf(stderr, "t_inetd: Could not exec %s\n", path);
exit(1);
}
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