1 /*

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

     3 ** distribution information.

     4 */

     5 

     6 #if	HAVE_CONFIG_H

     7 #include	"config.h"

     8 #endif

     9 #include	<stdio.h>

    10 #include	<stdlib.h>

    11 #include	<string.h>

    12 #if	HAVE_UNISTD_H

    13 #include	<unistd.h>

    14 #endif

    15 #if	HAVE_FCNTL_H

    16 #include	<fcntl.h>

    17 #endif

    18 

    19 #include	"auth.h"

    20 

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

    22 

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

    24 {

    25 int	pipes[2];

    26 pid_t	p;

    27 int	l, n;

    28 char	**vec;

    29 char	*prog;

    30 

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

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

    33 

    34 	if (pipe(pipes))

    35 	{

    36 		perror("pipe");

    37 		authexit(1);

    38 	}

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

    40 	{

    41 		perror("fork");

    42 		sleep(3);

    43 	}

    44 	close(3);

    45 

    46 	if (p)

    47 	{

    48 		dup(pipes[0]);

    49 		close(pipes[0]);

    50 		close(pipes[1]);

    51 		execv(prog, vec);

    52 		perror(prog);

    53 		authexit(1);

    54 	}

    55 	l=strlen(buf);

    56 	close(3);

    57 	close(pipes[0]);

    58 	while (l)

    59 	{

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

    61 		if (n <= 0)	break;

    62 		buf += n;

    63 		l -= n;

    64 	}

    65 	close(pipes[1]);

    66 	authexit(1);

    67 }