#include <sys/param.h>

#include <pwd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <syslog.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>


#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
 
int main(int argc, const char *argv[])
{
    struct passwd *pwd;
    const char *user;
    int pam_err, retry;
	register struct group *g;
	gid_t gid;


    pwd = getpwnam(argv[2]);

	setgrent();
	if ( NULL == (g = getgrnam(argv[1])))
	{
		endgrent();
	}
	else
	{
		while (*(g->gr_mem) != NULL)
		{
			printf("gr_mem: %s -  %s\n",argv[1], *(g->gr_mem));
			if (0==strcmp(user,*(g->gr_mem)))
			{
       			puts("OK");
				break;
			}
			*(g->gr_mem)++;
		}
		endgrent();
	}
	gid=getgid();
	if ( gid == g->gr_gid )
			puts("OK MAIN");

    return (0);
}