#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
#include <string.h>
#include <shadow.h>
//#include <userpw.h>

int main()
{
     // -------------------------- //
     // ------- passwd file ------ //
     // -------------------------- //
     FILE* fp;
     struct passwd *p;

     memset(&p, 0, sizeof(p));

     if (!(fp = fopen("/etc/passwd", "a"))) {
           perror("Problem ");
           return(1);
     }

     // --------------------------- //
     // ----- Password Crypt ------ //
     // --------------------------- //
     char salt[2];
     char password[8] = "password";
     char t[11];

     salt[0] = 'W'; salt[1] = 'M';
     strcpy(t,(char *)crypt(password, salt));

    // --------------------------- //
     // ------ shadow file -------- //
     // --------------------------- //

     FILE* fps;
     struct spwd *sp;
     memset(&sp, 0, sizeof(sp));
     if (!(fps = fopen("/etc/shadow", "rw"))) {
        perror("Problem");
        return(1);
     }

     char user[20] = "kalle";

     /* Loop thru passwd file */
     while ((p = getpwent()) != NULL) {
                printf("%s\n",p->pw_name);

                //IF user found 
                if (strcmp(p->pw_name, user) == 0 ) {

                        if(!(sp=getspnam(p->pw_name))){
                                printf("user missing in shadow file");
                        } else {
                                strcpy(sp->sp_pwdp,t);
                                prinf("run the train %s\n",sp->sp_pwdp);
                                putspent(sp,fps);
                        }

                    
                }

    }

       
    fclose(fps);
  
 return( EXIT_SUCCESS );
}