//
// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
//
/*
 * Copyright (c) 1988, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software written by Ken Arnold and
 * published in UNIX Review, Vol. 6, No. 8.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 *
 */

/*
 * From: @(#)popen.c	8.3 (Berkeley) 4/6/94
 * From: NetBSD: popen.c,v 1.5 1995/04/11 02:45:00 cgd Exp
 * From: OpenBSD: popen.c,v 1.8 1996/12/07 10:52:06 bitblt Exp
 * From: OpenBSD: popen.c,v 1.10 1999/02/26 00:15:54 art Exp
 */
char popen_rcsid[] = 
  "$Id: popen.c,v 1.6 1999/07/16 01:12:54 dholland Exp $";

#include <sys/types.h>
#include <sys/wait.h>
#include <sys/param.h>
#include <sys/stat.h>

#include <arpa/ftp.h>

#include <errno.h>
#include <glob.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dirent.h>

#include "extern.h"


//#define SIG_BLOCK 1	/* set of signals to block */
//#define SIG_SETMASK 0	/* set mask with sigprocmask() */

/*
 * Special version of popen which avoids call to shell.  This ensures noone
 * may create a pipe to a hidden program as a side effect of a list or dir
 * command.
 *
 * Note: destroys "program".
 */
static int *pids;


extern int root;
extern int type;
extern off_t	byte_count;


#define MAX_ARGV	100
#define MAX_GARGV	1000


FILE *
ftpd_popen(char *program, const char *type)
{
	FILE *volatile iop;
	int pdes[2];

	if ((*type != 'r' && *type != 'w') || type[1])
		return (NULL);


	if (pipe(pdes) < 0)
		return (NULL);
	
	
	 if (( iop = popen(program, "r")) == NULL)
		    {
			 return (NULL);
		    }
	
	if (*type == 'r') {
	iop = fdopen(pdes[0], type);
	(void)close(pdes[1]);
 	} else {
	iop = fdopen(pdes[1], type);
	(void)close(pdes[0]);
 	}
	

	return (iop);
}

int
ftpd_pclose(FILE *iop)
{
	int fdes, status;
	pid_t pid;
	
	/*
	 * pclose returns -1 if stream is not associated with a
	 * `popened' command, or, if already `pclosed'.
	 */
	if (pids == 0 || pids[fdes = fileno(iop)] == 0)
		return (-1);
	(void)fclose(iop);

	while ((pid = waitpid(pids[fdes], &status, 0)) < 0 && errno == EINTR)
		continue;
	pids[fdes] = 0;
	if (pid < 0)
		return (pid);
	if (WIFEXITED(status))
		return (WEXITSTATUS(status));
	return (1);
}