#define _XOPEN_SOURCE

#include <iostream>
#include <stdlib.h>
#include <crypt.h>
#include <unistd.h>
#include <pwd.h>
#include <shadow.h>
#include <fstream>
#include <grp.h>
#include <cstring>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <iostream>
#include <exception>

using namespace std;

int GetLastUserID()
{
    struct passwd *test = NULL;
    int uid = 0;

    setpwent();
    while((test = getpwent()) != NULL)
        uid = test->pw_uid;
    endpwent();

    return uid;
}

int GetLastGroupID()
{
    struct group *group = NULL;
    int gid = 0;
    setgrent();
    while ((group = getgrent()) != NULL)
        gid = group->gr_gid;
    endgrent();

    return  gid;
}

int main(int argc, char **argv){

    if ((strcmp(argv[1], "-h")) == 0)
    {
        cout << endl << "Тут гениальное описание" << endl;

        return 0;
    }


    if ((strcmp(argv[1], "-f") == 0))
    {
        cout << endl << "Тут что-то про работу с "<< argv[2] << " но что с ним сделать я не понял" << endl;

        return 0;
    }


    string parol;
    system("bash Test.sh -l 7 -n 1");
    ifstream file("testfile");
    getline(file, parol);
    remove("testfile");
    file.close();

    char *chparol = new char(parol.length() + 1);
    strcpy(chparol, parol.c_str());
    char* cpswd = crypt(chparol, "$6$Z/JMdYuG$");

    passwd *pswd = new passwd;
    spwd *shd = new spwd;
    group *grop = new group;

    char *dir = new char(strlen(argv[1]) + 7); // имя пользователя + /home/
    strcat(dir, "/home/");
    strcat(dir, argv[1]);

    pswd->pw_name = argv[1];
    pswd->pw_uid = GetLastUserID() + 1;
    pswd->pw_passwd = "x";
    pswd->pw_gid = GetLastGroupID() + 1;
    pswd->pw_gecos = argv[2];
    pswd->pw_dir = dir;
    pswd->pw_shell = "/bin/bash";

    mkdir(dir, 755);
    chown(dir, pswd->pw_uid, pswd->pw_gid);

    shd->sp_namp = pswd->pw_name;
    shd->sp_pwdp = cpswd;
    shd->sp_lstchg = time(NULL);
    shd->sp_inact = -1;
    shd->sp_expire = -1;
    shd->sp_min = 0;
    shd->sp_max = 99999;
    shd->sp_warn = 7;
    shd->sp_flag = -1;


    grop->gr_name = pswd->pw_name;
    grop->gr_passwd = "x";
    grop->gr_gid = pswd->pw_gid;

    FILE *user = fopen("/etc/passwd", "a+");
    FILE *shadow = fopen("/etc/shadow", "a+");
    FILE *grp = fopen("/etc/group", "a+");

    putpwent(pswd,user);
    putspent(shd, shadow);
    putgrent(grop, grp);

    fclose(user);
    fclose(shadow);
    fclose(grp);

    cout << pswd->pw_gecos << " login: " << pswd->pw_name << " password: " << chparol << " uid: " << pswd->pw_uid
            << " gid: " << pswd->pw_gid << " homedir: " << pswd->pw_dir << "\n";

    return 0;
}