// mini_inetd.c

//

// © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.

//

/*

 * Copyright (c) 1995 - 2001 Kungliga Tekniska Hgskolan

 * (Royal Institute of Technology, Stockholm, Sweden).

 * 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 Institute 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 INSTITUTE 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 INSTITUTE 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.

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

__RCSID("$Heimdal: mini_inetd.c,v 1.30 2002/02/18 19:08:55 joda Exp $"

        "$NetBSD: mini_inetd.c,v 1.2 2002/09/20 21:48:58 mycroft Exp $");

#endif

#include <err.h>

#include <netdb.h>

#include <sys/select.h>

#include <sys/socket.h>

#include <sys/param.h>

#ifdef __SYMBIAN32__

#include <unistd.h>

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

#include <fcntl.h>

#include <sys/stat.h>

#endif

#ifndef __SYMBIAN32__

#include "roken.h"

#endif

/*

 * accept a connection on `s' and pretend it's served by inetd.

 */

static void

accept_it (int s)

{

    int s2;

	socklen_t length;

	struct sockaddr sAddr;  	

    s2 = accept(s, &sAddr, &length);    

    close(s);

#ifdef __SYMBIAN32__    

   	if( s2 > 0 )    

		{  

#endif//__SYMBIAN32__

	    dup2(s2, STDIN_FILENO);

	    dup2(s2, STDOUT_FILENO);

	    dup2(s2, STDERR_FILENO); 

	    close(s2);

#ifdef __SYMBIAN32__    	    

		}

#endif//__SYMBIAN32__		

}

/*

 * Listen on a specified port, emulating inetd.

 */

void

mini_inetd_addrinfo (struct addrinfo *ai)

{

    struct addrinfo *a;

    int n, nalloc, i, ret;

    int *fds;

    int on=1;

#ifdef HAVE_POLL

    struct pollfd *set;

#else

    fd_set orig_read_set, read_set;

    int max_fd = -1;

#endif

    for (nalloc = 0, a = ai; a != NULL; a = a->ai_next)

	++nalloc;

    fds = (int*)malloc (nalloc * sizeof(*fds));

#ifdef HAVE_POLL

    set = malloc (nalloc * sizeof(*set));

#else

    FD_ZERO(&orig_read_set);

#endif

	for (i = 0, a = ai; a != NULL; a = a->ai_next) {

	fds[i] = socket (a->ai_family, a->ai_socktype, a->ai_protocol);

	if (fds[i] < 0) {

		continue;

	}

	(void) setsockopt(fds[i], SOL_SOCKET, SO_REUSEADDR,

				(char *)&on, sizeof(on));

	if (bind (fds[i], a->ai_addr, a->ai_addrlen) < 0) {

		close(fds[i]);

	    continue;

	}

	if (listen (fds[i], SOMAXCONN) < 0) {

		close(fds[i]);

	    continue;

	}

#ifdef HAVE_POLL

	set[i].fd = fds[i];

	set[i].events = POLLIN;

#else

	FD_SET(fds[i], &orig_read_set);

	max_fd = MAX(max_fd, fds[i]);

#endif

	++i;

    }

    n = i;

    do {   

#ifdef HAVE_POLL

	ret = poll (set, nalloc, INFTIM);

#else

	read_set = orig_read_set;

	ret = select (max_fd + 1, &read_set, NULL, NULL, NULL);

#endif

    } while (ret <= 0);

    for (i = 0; i < n; ++i)

#ifdef HAVE_POLL

	if (set[i].revents & POLLIN)

#else

	if (FD_ISSET (fds[i], &read_set))

#endif

	{	

	    accept_it (fds[0]);

	    free (fds);

#ifdef HAVE_POLL

	    free (set);

#endif

	    return;

	}

    abort ();

}

void

mini_inetd (int port)

{

	int err;

    struct addrinfo *ai, hints;

    char portstr[NI_MAXSERV];

    memset (&hints, 0, sizeof(hints));

    hints.ai_flags    = AI_PASSIVE;

    hints.ai_socktype = SOCK_STREAM;

    hints.ai_family   = PF_INET;

    snprintf (portstr, sizeof(portstr), "%d", ntohs(port));

    err=getaddrinfo (NULL, portstr, &hints, &ai);

    mini_inetd_addrinfo(ai);

    freeaddrinfo(ai);	

}