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/*
* tests/dejagnu/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. 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 <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include "com_err.h"
extern int errno;
char *progname;
static void usage()
{
fprintf(stderr, "%s: port program argv0 argv1 ...\n", progname);
exit(1);
}
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 */
int namelen = sizeof(f_inaddr);
#ifdef POSIX_SIGNALS
struct sigaction csig;
#endif
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));
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);
}
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;
/* Don't wait for a child signal... Otherwise dejagnu gets confused */
#ifdef POSIX_SIGNALS
csig.sa_handler = (RETSIGTYPE (*)())0;
sigemptyset(&csig.sa_mask);
csig.sa_flags = 0;
sigaction(SIGCHLD, &csig, (struct sigaction *)0);
#else
signal(SIGCHLD, SIG_IGN);
#endif
if(execv(path, &argv[3]))
fprintf(stderr, "t_inetd: Could not exec %s\n", path);
exit(1);
}
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