import getpass import ipaddress import logging import pathlib import re import select # Used for char by char polling of sys.stdin import shutil import signal import sys import termios import time import tty from .exceptions import * from .general import SysCommand from .hardware import AVAILABLE_GFX_DRIVERS, has_uefi from .locale_helpers import list_keyboard_languages, verify_keyboard_layout, search_keyboard_layout from .networking import list_interfaces from .output import log from .profiles import Profile # TODO: Some inconsistencies between the selection processes. # Some return the keys from the options, some the values? def get_terminal_height(): return shutil.get_terminal_size().lines def get_terminal_width(): return shutil.get_terminal_size().columns def get_longest_option(options): return max([len(x) for x in options]) def check_for_correct_username(username): if re.match(r'^[a-z_][a-z0-9_-]*\$?$', username) and len(username) <= 32: return True log( "The username you entered is invalid. Try again", level=logging.WARNING, fg='red' ) return False def do_countdown(): SIG_TRIGGER = False def kill_handler(sig, frame): print() exit(0) def sig_handler(sig, frame): global SIG_TRIGGER SIG_TRIGGER = True signal.signal(signal.SIGINT, kill_handler) original_sigint_handler = signal.getsignal(signal.SIGINT) signal.signal(signal.SIGINT, sig_handler) for i in range(5, 0, -1): print(f"{i}", end='') for x in range(4): sys.stdout.flush() time.sleep(0.25) print(".", end='') if SIG_TRIGGER: abort = input('\nDo you really want to abort (y/n)? ') if abort.strip() != 'n': exit(0) if SIG_TRIGGER is False: sys.stdin.read() SIG_TRIGGER = False signal.signal(signal.SIGINT, sig_handler) print() signal.signal(signal.SIGINT, original_sigint_handler) return True def get_password(prompt="Enter a password: "): while passwd := getpass.getpass(prompt): passwd_verification = getpass.getpass(prompt='And one more time for verification: ') if passwd != passwd_verification: log(' * Passwords did not match * ', fg='red') continue if len(passwd.strip()) <= 0: break return passwd return None def print_large_list(options, padding=5, margin_bottom=0, separator=': '): highest_index_number_length = len(str(len(options))) longest_line = highest_index_number_length + len(separator) + get_longest_option(options) + padding spaces_without_option = longest_line - (len(separator) + highest_index_number_length) max_num_of_columns = get_terminal_width() // longest_line max_options_in_cells = max_num_of_columns * (get_terminal_height() - margin_bottom) if len(options) > max_options_in_cells: for index, option in enumerate(options): print(f"{index}: {option}") return 1, index else: for row in range(0, (get_terminal_height() - margin_bottom)): for column in range(row, len(options), (get_terminal_height() - margin_bottom)): spaces = " " * (spaces_without_option - len(options[column])) print(f"{str(column): >{highest_index_number_length}}{separator}{options[column]}", end=spaces) print() return column, row def generic_multi_select(options, text="Select one or more of the options above (leave blank to continue): ", sort=True, default=None, allow_empty=False): # Checking if the options are different from `list` or `dict` or if they are empty if type(options) not in [list, dict]: log(f" * Generic multi-select doesn't support ({type(options)}) as type of options * ", fg='red') log(" * If problem persists, please create an issue on https://github.com/archlinux/archinstall/issues * ", fg='yellow') raise RequirementError("generic_multi_select() requires list or dictionary as options.") if not options: log(" * Generic multi-select didn't find any options to choose from * ", fg='red') log(" * If problem persists, please create an issue on https://github.com/archlinux/archinstall/issues * ", fg='yellow') raise RequirementError('generic_multi_select() requires at least one option to proceed.') # After passing the checks, function continues to work if type(options) == dict: options = list(options.values()) if sort: options = sorted(options) section = MiniCurses(get_terminal_width(), len(options)) selected_options = [] while True: if not selected_options and default in options: selected_options.append(default) printed_options = [] for option in options: if option in selected_options: printed_options.append(f'>> {option}') else: printed_options.append(f'{option}') section.clear(0, get_terminal_height() - section._cursor_y - 1) print_large_list(printed_options, margin_bottom=2) section._cursor_y = len(printed_options) section._cursor_x = 0 section.write_line(text) section.input_pos = section._cursor_x selected_option = section.get_keyboard_input(end=None) # This string check is necessary to correct work with it # Without this, Python will raise AttributeError because of stripping `None` # It also allows to remove empty spaces if the user accidentally entered them. if isinstance(selected_option, str): selected_option = selected_option.strip() try: if not selected_option: if not selected_options and default: selected_options = [default] elif selected_options or allow_empty: break else: raise RequirementError('Please select at least one option to continue') elif selected_option.isnumeric(): if (selected_option := int(selected_option)) >= len(options): raise RequirementError(f'Selected option "{selected_option}" is out of range') selected_option = options[selected_option] if selected_option in selected_options: selected_options.remove(selected_option) else: selected_options.append(selected_option) elif selected_option in options: if selected_option in selected_options: selected_options.remove(selected_option) else: selected_options.append(selected_option) else: raise RequirementError(f'Selected option "{selected_option}" does not exist in available options') except RequirementError as e: log(f" * {e} * ", fg='red') return selected_options class MiniCurses: def __init__(self, width, height): self.width = width self.height = height self._cursor_y = 0 self._cursor_x = 0 self.input_pos = 0 def write_line(self, text, clear_line=True): if clear_line: sys.stdout.flush() sys.stdout.write("\033[%dG" % 0) sys.stdout.flush() sys.stdout.write(" " * (get_terminal_width() - 1)) sys.stdout.flush() sys.stdout.write("\033[%dG" % 0) sys.stdout.flush() sys.stdout.write(text) sys.stdout.flush() self._cursor_x += len(text) def clear(self, x, y): if x < 0: x = 0 if y < 0: y = 0 # import time # sys.stdout.write(f"Clearing from: {x, y}") # sys.stdout.flush() # time.sleep(2) sys.stdout.flush() sys.stdout.write('\033[%d;%df' % (y, x)) for line in range(get_terminal_height() - y - 1, y): sys.stdout.write(" " * (get_terminal_width() - 1)) sys.stdout.flush() sys.stdout.write('\033[%d;%df' % (y, x)) sys.stdout.flush() def deal_with_control_characters(self, char): mapper = { '\x7f': 'BACKSPACE', '\r': 'CR', '\n': 'NL' } if (mapped_char := mapper.get(char, None)) == 'BACKSPACE': if self._cursor_x <= self.input_pos: # Don't backspace futher back than the cursor start position during input return True # Move back to the current known position (BACKSPACE doesn't updated x-pos) sys.stdout.flush() sys.stdout.write("\033[%dG" % self._cursor_x) sys.stdout.flush() # Write a blank space sys.stdout.flush() sys.stdout.write(" ") sys.stdout.flush() # And move back again sys.stdout.flush() sys.stdout.write("\033[%dG" % self._cursor_x) sys.stdout.flush() self._cursor_x -= 1 return True elif mapped_char in ('CR', 'NL'): return True return None def get_keyboard_input(self, strip_rowbreaks=True, end='\n'): assert end in ['\r', '\n', None] poller = select.epoll() response = '' sys_fileno = sys.stdin.fileno() old_settings = termios.tcgetattr(sys_fileno) tty.setraw(sys_fileno) poller.register(sys.stdin.fileno(), select.EPOLLIN) eof = False while eof is False: for fileno, event in poller.poll(0.025): char = sys.stdin.read(1) # sys.stdout.write(f"{[char]}") # sys.stdout.flush() if newline := (char in ('\n', '\r')): eof = True if not newline or strip_rowbreaks is False: response += char if self.deal_with_control_characters(char) is not True: self.write_line(response[-1], clear_line=False) termios.tcsetattr(sys_fileno, termios.TCSADRAIN, old_settings) if end: sys.stdout.write(end) sys.stdout.flush() self._cursor_x = 0 self._cursor_y += 1 if response: return response def ask_for_superuser_account(prompt='Username for required superuser with sudo privileges: ', forced=False): while 1: new_user = input(prompt).strip(' ') if not new_user and forced: # TODO: make this text more generic? # It's only used to create the first sudo user when root is disabled in guided.py log(' * Since root is disabled, you need to create a least one superuser!', fg='red') continue elif not new_user and not forced: raise UserError("No superuser was created.") elif not check_for_correct_username(new_user): continue password = get_password(prompt=f'Password for user {new_user}: ') return {new_user: {"!password": password}} def ask_for_additional_users(prompt='Any additional users to install (leave blank for no users): '): users = {} superusers = {} while 1: new_user = input(prompt).strip(' ') if not new_user: break if not check_for_correct_username(new_user): continue password = get_password(prompt=f'Password for user {new_user}: ') if input("Should this user be a superuser (sudoer) [y/N]: ").strip(' ').lower() in ('y', 'yes'): superusers[new_user] = {"!password": password} else: users[new_user] = {"!password": password} return users, superusers def ask_for_a_timezone(): while True: timezone = input('Enter a valid timezone (examples: Europe/Stockholm, US/Eastern) or press enter to use UTC: ').strip().strip('*.') if timezone == '': timezone = 'UTC' if (pathlib.Path("/usr") / "share" / "zoneinfo" / timezone).exists(): return timezone else: log( f"Specified timezone {timezone} does not exist.", level=logging.WARNING, fg='red' ) def ask_for_bootloader() -> str: bootloader = "systemd-bootctl" if not has_uefi(): bootloader = "grub-install" else: bootloader_choice = input("Would you like to use GRUB as a bootloader instead of systemd-boot? [y/N] ").lower() if bootloader_choice == "y": bootloader = "grub-install" return bootloader def ask_for_audio_selection(): audio = "pulseaudio" # Default for most desktop environments pipewire_choice = input("Would you like to install pipewire instead of pulseaudio as the default audio server? [Y/n] ").lower() if pipewire_choice in ("y", ""): audio = "pipewire" return audio def ask_to_configure_network(): # Optionally configure one network interface. # while 1: # {MAC: Ifname} interfaces = { 'ISO-CONFIG': 'Copy ISO network configuration to installation', 'NetworkManager': 'Use NetworkManager to control and manage your internet connection', **list_interfaces() } nic = generic_select(interfaces, "Select one network interface to configure (leave blank to skip): ") if nic and nic != 'Copy ISO network configuration to installation': if nic == 'Use NetworkManager to control and manage your internet connection': return {'nic': nic, 'NetworkManager': True} # Current workaround: # For selecting modes without entering text within brackets, # printing out this part separate from options, passed in # `generic_select` modes = ['DHCP (auto detect)', 'IP (static)'] for index, mode in enumerate(modes): print(f"{index}: {mode}") mode = generic_select(['DHCP', 'IP'], f"Select which mode to configure for {nic} or leave blank for DHCP: ", options_output=False) if mode == 'IP': while 1: ip = input(f"Enter the IP and subnet for {nic} (example: 192.168.0.5/24): ").strip() # Implemented new check for correct IP/subnet input try: ipaddress.ip_interface(ip) break except ValueError: log( "You need to enter a valid IP in IP-config mode.", level=logging.WARNING, fg='red' ) # Implemented new check for correct gateway IP address while 1: gateway = input('Enter your gateway (router) IP address or leave blank for none: ').strip() try: if len(gateway) == 0: gateway = None else: ipaddress.ip_address(gateway) break except ValueError: log( "You need to enter a valid gateway (router) IP address.", level=logging.WARNING, fg='red' ) dns = None if len(dns_input := input('Enter your DNS servers (space separated, blank for none): ').strip()): dns = dns_input.split(' ') return {'nic': nic, 'dhcp': False, 'ip': ip, 'gateway': gateway, 'dns': dns} else: return {'nic': nic} elif nic: return nic return {} def ask_for_disk_layout(): options = { 'keep-existing': 'Keep existing partition layout and select which ones to use where', 'format-all': 'Format entire drive and setup a basic partition scheme', 'abort': 'Abort the installation', } value = generic_select(options, "Found partitions on the selected drive, (select by number) what you want to do: ", allow_empty_input=False, sort=True) return next((key for key, val in options.items() if val == value), None) def ask_for_main_filesystem_format(): options = { 'btrfs': 'btrfs', 'ext4': 'ext4', 'xfs': 'xfs', 'f2fs': 'f2fs' } value = generic_select(options, "Select which filesystem your main partition should use (by number or name): ", allow_empty_input=False) return next((key for key, val in options.items() if val == value), None) def generic_select(options, input_text="Select one of the above by index or absolute value: ", allow_empty_input=True, options_output=True, sort=False): """ A generic select function that does not output anything other than the options and their indexes. As an example: generic_select(["first", "second", "third option"]) 0: first 1: second 2: third option When the user has entered the option correctly, this function returns an item from list, a string, or None """ # Checking if the options are different from `list` or `dict` or if they are empty if type(options) not in [list, dict]: log(f" * Generic select doesn't support ({type(options)}) as type of options * ", fg='red') log(" * If problem persists, please create an issue on https://github.com/archlinux/archinstall/issues * ", fg='yellow') raise RequirementError("generic_select() requires list or dictionary as options.") if not options: log(" * Generic select didn't find any options to choose from * ", fg='red') log(" * If problem persists, please create an issue on https://github.com/archlinux/archinstall/issues * ", fg='yellow') raise RequirementError('generic_select() requires at least one option to proceed.') # After passing the checks, function continues to work if type(options) == dict: # To allow only `list` and `dict`, converting values of options here. # Therefore, now we can only provide the dictionary itself options = list(options.values()) if sort: # As we pass only list and dict (converted to list), we can skip converting to list options = sorted(options) # Added ability to disable the output of options items, # if another function displays something different from this if options_output: for index, option in enumerate(options): print(f"{index}: {option}") # The new changes introduce a single while loop for all inputs processed by this function # Now the try...except block handles validation for invalid input from the user while True: try: selected_option = input(input_text).strip() if not selected_option: # `allow_empty_input` parameter handles return of None on empty input, if necessary # Otherwise raise `RequirementError` if allow_empty_input: return None raise RequirementError('Please select an option to continue') # Replaced `isdigit` with` isnumeric` to discard all negative numbers elif selected_option.isnumeric(): if (selected_option := int(selected_option)) >= len(options): raise RequirementError(f'Selected option "{selected_option}" is out of range') selected_option = options[selected_option] break elif selected_option in options: break # We gave a correct absolute value else: raise RequirementError(f'Selected option "{selected_option}" does not exist in available options') except RequirementError as err: log(f" * {err} * ", fg='red') return selected_option def select_disk(dict_o_disks): """ Asks the user to select a harddrive from the `dict_o_disks` selection. Usually this is combined with :ref:`archinstall.list_drives`. :param dict_o_disks: A `dict` where keys are the drive-name, value should be a dict containing drive information. :type dict_o_disks: dict :return: The name/path (the dictionary key) of the selected drive :rtype: str """ drives = sorted(list(dict_o_disks.keys())) if len(drives) >= 1: for index, drive in enumerate(drives): print(f"{index}: {drive} ({dict_o_disks[drive]['size'], dict_o_disks[drive].device, dict_o_disks[drive]['label']})") log("You can skip selecting a drive and partitioning and use whatever drive-setup is mounted at /mnt (experimental)", fg="yellow") drive = generic_select(drives, 'Select one of the above disks (by name or number) or leave blank to use /mnt: ', options_output=False) if not drive: return drive drive = dict_o_disks[drive] return drive raise DiskError('select_disk() requires a non-empty dictionary of disks to select from.') def select_profile(options): """ Asks the user to select a profile from the `options` dictionary parameter. Usually this is combined with :ref:`archinstall.list_profiles`. :param options: A `dict` where keys are the profile name, value should be a dict containing profile information. :type options: dict :return: The name/dictionary key of the selected profile :rtype: str """ profiles = sorted(list(options)) if len(profiles) >= 1: for index, profile in enumerate(profiles): print(f"{index}: {profile}") print(' -- The above list is a set of pre-programmed profiles. --') print(' -- They might make it easier to install things like desktop environments. --') print(' -- (Leave blank and hit enter to skip this step and continue) --') selected_profile = generic_select(profiles, 'Enter a pre-programmed profile name if you want to install one: ', options_output=False) if selected_profile: return Profile(None, selected_profile) else: raise RequirementError("Selecting profiles require a least one profile to be given as an option.") def select_language(options, show_only_country_codes=True): """ Asks the user to select a language from the `options` dictionary parameter. Usually this is combined with :ref:`archinstall.list_keyboard_languages`. :param options: A `generator` or `list` where keys are the language name, value should be a dict containing language information. :type options: generator or list :param show_only_country_codes: Filters out languages that are not len(lang) == 2. This to limit the number of results from stuff like dvorak and x-latin1 alternatives. :type show_only_country_codes: bool :return: The language/dictionary key of the selected language :rtype: str """ default_keyboard_language = 'us' if show_only_country_codes: languages = sorted([language for language in list(options) if len(language) == 2]) else: languages = sorted(list(options)) if len(languages) >= 1: for index, language in enumerate(languages): print(f"{index}: {language}") print(" -- You can choose a layout that isn't in this list, but whose name you know --") print(" -- Also, you can enter '?' or 'help' to search for more languages, or skip to use US layout --") while True: selected_language = input('Select one of the above keyboard languages (by name or full name): ') if not selected_language: return default_keyboard_language elif selected_language.lower() in ('?', 'help'): while True: filter_string = input("Search for layout containing (example: \"sv-\") or enter 'exit' to exit from search: ") if filter_string.lower() == 'exit': return select_language(list_keyboard_languages()) new_options = list(search_keyboard_layout(filter_string)) if len(new_options) <= 0: log(f"Search string '{filter_string}' yielded no results, please try another search.", fg='yellow') continue return select_language(new_options, show_only_country_codes=False) elif selected_language.isnumeric(): selected_language = int(selected_language) if selected_language >= len(languages): log(' * Selected option is out of range * ', fg='red') continue return languages[selected_language] elif verify_keyboard_layout(selected_language): return selected_language else: log(" * Given language wasn't found * ", fg='red') raise RequirementError("Selecting languages require a least one language to be given as an option.") def select_mirror_regions(mirrors, show_top_mirrors=True): """ Asks the user to select a mirror or region from the `mirrors` dictionary parameter. Usually this is combined with :ref:`archinstall.list_mirrors`. :param mirrors: A `dict` where keys are the mirror region name, value should be a dict containing mirror information. :type mirrors: dict :param show_top_mirrors: Will limit the list to the top 10 fastest mirrors based on rank-mirror *(Currently not implemented but will be)*. :type show_top_mirrors: bool :return: The dictionary information about a mirror/region. :rtype: dict """ # TODO: Support multiple options and country codes, SE,UK for instance. regions = sorted(list(mirrors.keys())) selected_mirrors = {} if len(regions) >= 1: print_large_list(regions, margin_bottom=4) print(' -- You can skip this step by leaving the option blank --') selected_mirror = generic_select(regions, 'Select one of the above regions to download packages from (by number or full name): ', options_output=False) if not selected_mirror: # Returning back empty options which can be both used to # do "if x:" logic as well as do `x.get('mirror', {}).get('sub', None)` chaining return {} # I'm leaving "mirrors" on purpose here. # Since region possibly contains a known region of # all possible regions, and we might want to write # for instance Sweden (if we know that exists) without having to # go through the search step. selected_mirrors[selected_mirror] = mirrors[selected_mirror] return selected_mirrors raise RequirementError("Selecting mirror region require a least one region to be given as an option.") def select_driver(options=AVAILABLE_GFX_DRIVERS): """ Some what convoluted function, which's job is simple. Select a graphics driver from a pre-defined set of popular options. (The template xorg is for beginner users, not advanced, and should there for appeal to the general public first and edge cases later) """ drivers = sorted(list(options)) default_option = options["All open-source (default)"] if drivers: lspci = SysCommand('/usr/bin/lspci') for line in lspci.trace_log.split(b'\r\n'): if b' vga ' in line.lower(): if b'nvidia' in line.lower(): print(' ** nvidia card detected, suggested driver: nvidia **') elif b'amd' in line.lower(): print(' ** AMD card detected, suggested driver: AMD / ATI **') initial_option = generic_select(drivers, input_text="Select your graphics card driver: ") if not initial_option: return default_option selected_driver = options[initial_option] if type(selected_driver) == dict: driver_options = sorted(list(selected_driver)) driver_package_group = generic_select(driver_options, f'Which driver-type do you want for {initial_option}: ', allow_empty_input=False) driver_package_group = selected_driver[driver_package_group] return driver_package_group return selected_driver raise RequirementError("Selecting drivers require a least one profile to be given as an option.") def select_kernel(options): """ Asks the user to select a kernel for system. :param options: A `list` with kernel options :type options: list :return: The string as a selected kernel :rtype: string """ default_kernel = "linux" kernels = sorted(list(options)) if kernels: return generic_multi_select(kernels, f"Choose which kernels to use (leave blank for default: {default_kernel}): ", default=default_kernel, sort=False) raise RequirementError("Selecting kernels require a least one kernel to be given as an option.")