/*

** Copyright 1998 - 1999 Double Precision, Inc.  See COPYING for

** distribution information.

*/

#if	HAVE_CONFIG_H

#include	"config.h"

#endif

#include	<stdio.h>

#include	<stdlib.h>

#include	<string.h>

#if	HAVE_UNISTD_H

#include	<unistd.h>

#endif

#if	HAVE_FCNTL_H

#include	<fcntl.h>

#endif

#include	"auth.h"

static const char rcsid[]="$Id: chain.c,v 1.1 2000/04/13 17:55:05 bruce Exp $";

void authchain(int argc, char **argv, const char *buf)

{

int	pipes[2];

pid_t	p;

int	l, n;

char	**vec;

char	*prog;

	vec=authcopyargv(argc, argv, &prog);

	if (!prog || open("/dev/null", O_RDONLY) != 3)	authexit(1);

	if (pipe(pipes))

	{

		perror("pipe");

		authexit(1);

	}

	while ((p=fork()) < 0)

	{

		perror("fork");

		sleep(3);

	}

	close(3);

	if (p)

	{

		dup(pipes[0]);

		close(pipes[0]);

		close(pipes[1]);

		execv(prog, vec);

		perror(prog);

		authexit(1);

	}

	l=strlen(buf);

	close(3);

	close(pipes[0]);

	while (l)

	{

		n=write(pipes[1], buf, l);

		if (n <= 0)	break;

		buf += n;

		l -= n;

	}

	close(pipes[1]);

	authexit(1);

}