char* indexes(const char* path)
{
    // open the directory
    DIR* dir = opendir(path);
    if (!dir)
        return NULL;

    // search for index.php and index.html in the directory
    struct dirent* names = NULL;

    for (names = readdir(dir); names != NULL; names = readdir(dir))
    {

        if (strcmp(names->d_name, "index.html") == 0)
        {
            char* index = malloc(sizeof(char) * (strlen(path) + strlen(names->d_name) + 1));
            if (!index)
                return NULL;

            index = strcpy(index, path);
            index = strcat(index, names->d_name);
            return index;
        }

        else if (strcmp(names->d_name, "index.php") == 0)
        {
            char* index = malloc(sizeof(char) * (strlen(path) + strlen(names->d_name) + 1));
            if (!index)
                return NULL;

            index = strcpy(index, path);
            index = strcat(index, names->d_name);
            return index;
        }
    }

    return NULL;
}