#include <iostream>
#include <pwd.h>
#include <sys/stat.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

void load_users(char** users_array, int* users_count, char* filename);
void change_permission(char* filename, char* mode);
void check(char **users_array, int* users_count, char* filename, char* mode);


int main(int argc, char **argv)
{
	//char mode[] = "000";
	//char directory[] = "testdir";
	//char userfile[] = "users.txt";

	char mode[256];
	char directory[256];
	char userfile[256];

	sprintf(userfile, "%s", argv[1]);

	sprintf(directory, "%s", argv[2]);

	sprintf(mode, "%s", argv[3]);

	printf("userfile:%s\n",userfile);
	printf("dir:%s\n",directory);
	printf("mode:%s\n",mode);
	int users_count = 0;
	char* users[25];

  for (int i = 0; i < 25; i++)
  {
    users[i] = (char*) malloc(10);
  }

  load_users(users, &users_count, userfile);
  //load_filelist();

  DIR *dir;
	struct dirent *ent;
	dir = opendir(directory);


	char pathname[20];
	printf("all dirs:\n");
	while ((ent = readdir (dir)) != NULL)
	{
		sprintf(pathname, "%s/%s", directory, ent->d_name);
		printf("pathname %s\n", pathname);
		check(users, &users_count, pathname, mode);
	}

	printf("-------------------\n");
  printf("all users:\n");

  for (int i = 0; i < users_count;i++)
  {
    printf("%s\n", users[i]);
  }

  for (int i = 0; i < 25; i++)
  {
    free(users[i]);
  }

  return 0;
}

void load_users(char** users_array, int* users_count, char* filename)
{

  FILE *file1;
  file1 = fopen(filename, "r");

  int n = 0;
  while (!feof(file1))
  {
    fscanf(file1, "%s", users_array[n]);
    n++;
  }
  *users_count = n;
}

void check(char **users_array, int* users_count, char* filename, char* mode)
{
	struct stat info;

	stat(filename, &info);

	struct passwd *pw = getpwuid(info.st_uid);	// получаем владельца
	//std::cout<<pw->pw_name<<std::endl;

	char* owner = pw->pw_name;

	for (int i=0; i < *users_count; i++)
	{
		if (strcmp(owner, users_array[i]) == 0)	// !!!
		{
			change_permission(filename, mode);
			printf("dir owner: %s,\n", owner);

		}
	}

}
void change_permission(char* filename, char* mode)
{
    int i;
	i = strtol(mode, 0, 8);
    if (chmod (filename,i) < 0)
        printf("error in chmod");
	else
		printf("changing mode %s for %s\n", mode, filename);

}