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/*
** Copyright 1998 - 2000 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "auth.h"
#include "authmod.h"
#include "authwait.h"
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <signal.h>
static const char rcsid[]="$Id: authmoduser.c,v 1.6 2001/11/29 02:57:15 mrsam Exp $";
void authmod(int argc, char **argv,
const char *service,
const char *authtype,
const char *authdata)
{
int pipe3fd[2];
pid_t pid;
char *buf;
int waitstat;
char *p;
int l;
signal(SIGCHLD, SIG_DFL);
while (wait(&waitstat) >= 0)
;
alarm(0);
close(3);
while (open("/dev/null", O_RDWR) != 3)
;
if (pipe(pipe3fd))
{
perror("pipe");
authexit(1);
}
while ((pid=fork()) == -1)
{
sleep(5);
}
if (pid)
{
char *prog;
char **argvec=authcopyargv(argc, argv, &prog);
if (!prog) authexit(1);
close(3);
dup(pipe3fd[0]);
close(pipe3fd[0]);
close(pipe3fd[1]);
execv(prog, argvec);
perror(prog);
authexit(1);
}
close(3);
close(pipe3fd[0]);
buf=malloc(strlen(service)+strlen(authtype)+strlen(authdata)+4);
if (!buf)
{
perror("malloc");
authexit(1);
}
sprintf(buf, "%s\n%s\n%s\n", service, authtype, authdata);
p=buf;
l=strlen(p);
while (l)
{
int n=write(pipe3fd[1], p, l);
if (n <= 0) break;
p += n;
l -= n;
}
free(buf);
close(pipe3fd[0]);
close(pipe3fd[1]);
authexit(1);
}
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