Class: Roebe::Wlan

Inherits:
Base show all
Defined in:
lib/roebe/classes/wlan/wlan.rb

Constant Summary collapse

DEFAULT_VALUE_FOR_RUN_ALREADY =
#

DEFAULT_VALUE_FOR_RUN_ALREADY

#
true
FILE =
#

FILE

#
'$RSRC/roebe/lib/roebe/classes/wlan/wlan.rb'
FILE_WPA_SUPPLICANT_CONF =
#

FILE_WPA_SUPPLICANT_CONF

#
'/etc/wpa_supplicant.conf'
FILE_NAME_FOR_THE_WIRELESS_INTERFACE =
#

FILE_NAME_FOR_THE_WIRELESS_INTERFACE

#
"#{::Roebe.project_yaml_directory?}/name_for_the_wireless_interface.yml"
PASSPHRASE1 =
#

PASSPHRASE1

This constant exists just for automatically simplifying connecting to a local WLAN without much fuzz. It is also completely irrelevant whether other people know this phrase, hence why it is hardcoded here; on the plus side, it allows us to autogenerate the .conf file that wpa_passphrase requires.

#
'e8a2e276a261fef46a721ea8379a5685ca36869f625df2e172d007c97e308ff4'
HOME_ESSID =
#

HOME_ESSID

Adjust accordingly to the ESSID that you want to use.

#
'UPC'\
'1371700'

Constants inherited from Base

Base::COLOURS, Base::HOME_DIRECTORY_OF_USER_X, Base::N, Base::NAMESPACE

Instance Method Summary collapse

Methods inherited from Base

#actions, #append_this_onto_that_file, #append_what_into, #be_silent, #be_verbose?, #beautiful_url, #burlywood, #call_next, #chdir, #cheerful_guy, #cliner, #complex_esystem, #convert_global_env, #copy_directory, #copy_file, #cornflowerblue, #create_directory, #crimson, #current_month?, #current_time?, #current_year?, #cyan, #darkcyan, #darkgreen, #darkkhaki, #darkslateblue, #deeppink, #delete_symlink, #do_not_use_the_base_colours, #do_use_the_base_colours, #e, #ecomment, #editor_to_use?, #efancy, #eimp, #emphasis, #ensure_main_encoding, #ensure_utf_encoding, #eparse, #erev, #esteelblue, #etomato, #ewarn, #exit_program, #firebrick, #get_current_day, #get_current_month, #get_files_and_directories, #get_files_from, #get_german_name_for_this_weekday, #gold, #green, #grey, #hh_mm_ss, #hh_mm_ss_day_month_year, #home_dir?, #home_directory_of_user_x?, #infer_the_namespace, #internal_hash?, #is_a_directory?, #is_a_file?, #is_a_jpg_file?, #is_an_image_file?, #is_archive?, #is_audio_file?, #is_in_studium_dir?, #is_multimedia_file?, #is_on_roebe?, #is_on_windows?, #is_studium_available?, #is_symlink?, #is_this_a_ruby_file?, #is_video_file?, #iso_encoding?, #le, #left_colour, #lightblue, #lightgreen, #lightseagreen, #lightsteelblue, #lime, #limegreen, #localhost_to_data, #log_directory?, #main_encoding?, #mediumorchid, #mediumpurple, #mediumseagreen, #mediumslateblue, #mediumspringgreen, #mediumturquoise, #mkdir_p, #mv, #n_days_in_this_month, #n_pages_in_this_pdf_file?, #namespace?, #no_file_exists_at, #ogrey, #olive, #olivedrab, #open_in_browser, #opne, #opnesystem, #opnn, #orange, #orchid, #orev, #palegoldenrod, #palevioletred, #pink, #powderblue, #programs_dir?, #project_base_dir?, #random_html_colour, #rds, #read_file_in_iso_encoding, #read_file_via_the_default_encoding, #read_lines_via_iso_encoding, #readlines_with_main_encoding, #red, #register_sigint, #remove, #remove_directory, #remove_file, #rename_kde_konsole_tab, #replace_localhost_with_data, #report_pwd, #require_rescue, #reset_the_internal_hash, #return_all_directories_from_this_directory, #return_all_files_from_this_directory, #return_current_directory, #return_dd_mm_yyyy, #return_file_or_directory_of, #return_files_from_pwd, #return_last_part_of_the_current_directory, #return_utc, #rev, #right_arrow?, #right_colour, #roebe_log_directory?, #rosybrown, #royalblue, #ruby_base_directory?, #run_in_background, #run_rcfiles_then_run_ata_via_qdbus, #sandybrown, #sdir, #seagreen, #set_be_verbose, #set_xorg_buffer, #sfancy, #sfile, #silent_redirection?, #simp, #simple_esystem, #skyblue, #slateblue, #slategray, #springgreen, #steelblue, #string_italic, #swarn, #symlink, #teal, #temp_dir?, #to_camelcase, #to_counted_hash, #tomato, #touch, #try_to_require_the_beautiful_url_gem, #try_to_require_the_html_template, #try_to_require_the_open_gem, #try_to_require_the_program_information_gem, #try_to_require_the_xorg_buffer, #use_colours?, #verbose_truth, #weekday?, #word_wrap, #write_what_into, #yellow

Methods included from Base::CommandlineArguments

#append_onto_the_commandline_arguments, #clear_commandline_arguments, #commandline_arguments?, #commandline_arguments_as_string?, #commandline_arguments_without_leading_hyphens?, #first_argument?, #first_argument_without_leading_hyphens?, #has_an_argument_been_passed?, #remove_hyphened_arguments_from_the_commandline_arguments, #return_commandline_arguments_with_leading_hyphens, #second_argument?, #set_commandline_arguments

Constructor Details

#initialize(commandline_arguments = ARGV, run_already = DEFAULT_VALUE_FOR_RUN_ALREADY) ⇒ Wlan

#

initialize

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 93

def initialize(
    commandline_arguments = ARGV,
    run_already           = DEFAULT_VALUE_FOR_RUN_ALREADY
  )
  reset
  @run_already = run_already # ← Must come quite early, even before setting the commandline-arguments.
  if commandline_arguments.is_a?(Array) and
    (commandline_arguments.size > 0) and
    (commandline_arguments.first == :do_not_run_yet)
    @run_already = false
  elsif commandline_arguments.is_a? Symbol
    case commandline_arguments
    # ===================================================================== #
    # === :do_not_run_yet
    # ===================================================================== #
    when :do_not_run_yet,
         :do_not_run
      @run_already = false
    end
  end
  set_commandline_arguments(
    commandline_arguments
  )
  case @run_already
  # ======================================================================= #
  # === :do_not_run_yet
  # ======================================================================= #
  when :do_not_run_yet,
       :do_not_run
    @run_already = false
  end
  run if @run_already
end

Instance Method Details

#autofix_rfkill_problem ⇒ Object

#

autofix_rfkill_problem

This method can be used to solve RF-kill related problems.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 253

def autofix_rfkill_problem
  array_unblock_these_devices = %w( # Denote which devices ought to be blocked.
    0
    2
    3
  )
  e
  e '(1) First, we will issue '+gold('rfkill list all')+' to see '\
    'all blocked devices:'
  e
  run_rfkill_list_all_command
  e
  e '(2) Next, we will unblock the main device at '+
    slateblue('0')+' and '+slateblue('3')+'. (Hardcoded entries for now.)'
  e
  array_unblock_these_devices.each {|this_device|
    esystem "rfkill unblock #{this_device}"
  }
  e
  e 'If everything worked then the status should have changed.'
  e
  e "3) Let's verify this:"
  e
  run_rfkill_list_all_command
  e
end

#autogenerate_configuration_file_for_the_wpa_passphrase ⇒ Object

#

autogenerate_configuration_file_for_the_wpa_passphrase

This method will autogenerate the file that I will use on my laptop setup (at home).

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 317

def autogenerate_configuration_file_for_the_wpa_passphrase
  what = 'network={
ssid="UPC1371700"
# psk="'+default_password?+'"
psk=e8a2e276a261fef46a721ea8379a5685ca36869f625df2e172d007c97e308ff4
}'
  into = FILE_WPA_SUPPLICANT_CONF
  opne 'Now writing into the file at `'+sfile(into)+'`.'
  write_what_into(what, into)
end

#automatically_start_the_wlan_device_on_my_laptop ⇒ Object

#

automatically_start_the_wlan_device_on_my_laptop

This method is specifically for my home-setup, e. g. my main laptop.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 943

def automatically_start_the_wlan_device_on_my_laptop
  cliner
  e
  e 'This entry-point for wlan is primarily optimized for my own laptop.'
  e
  e 'This script will next attempt to systematically perform all steps'
  e 'necessary in order to get the WLAN device to work.'
  e
  e '1) First, we will try to determine the locally available ESSIDs.'
  e
  this_file = save_essid_where?
  if File.exist? this_file
    e 'We will make use of the file at `'+sfile(this_file)+'`.'
    e
    e 'The content of this file is:'
    e
    e sfancy('  '+File.read(this_file))
    e
  end
  e
  e '2) Using a hardcoded value for ESSID next ('+sfancy(HOME_ESSID)+')'
  e
  # ======================================================================= #
  # Since we use this hardcoded approach, we will NOT store this
  # ESSID value.
  # ======================================================================= #
  set_default_essid_for_the_laptop
  e 'The ESSID is now: '+sfancy(query_essid_value)
  e
  if is_on_roebe?
    e "#{rev}Also autogenerating the configuration file that "\
      "wpa_passphrase requires."
    autogenerate_configuration_file_for_the_wpa_passphrase
  end
  e
  e 'Next setting ip link set wlan(device_number) up:'
  e
  ip_link_set_wlan_up
  e
  startup_wlan
  e
  cliner
end

#available_essid_devices? ⇒ Boolean Also known as: array_discovered_essid_devices?

#

available_essid_devices?

#

Returns:

  • (Boolean) 


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# File 'lib/roebe/classes/wlan/wlan.rb', line 244

def available_essid_devices?
  @internal_hash[:array_discovered_essid_devices]
end

#connect_to_wlan ⇒ Object

#

connect_to_wlan

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1086

def connect_to_wlan
  esystem 'iw dev '+name_of_the_wlan_device?+' connect -w SSID'
end

#consider_reading_the_essid_entry_from_a_file(use_this_file_path = save_essid_where? ) ⇒ Object

#

consider_reading_the_essid_entry_from_a_file

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 189

def consider_reading_the_essid_entry_from_a_file(
    use_this_file_path = save_essid_where?
  )
  if File.exist? use_this_file_path
    this_essid = YAML.load_file(use_this_file_path)
    set_essid(
      this_essid,
      :do_not_save_again # Do not save it again.
    )
  end
end

#consider_restoring_essid(be_verbose = be_verbose? ) ⇒ Object

#

consider_restoring_essid

This method will, essentially, load from the main ESSID file again.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 796

def consider_restoring_essid(
    be_verbose = be_verbose?
  )
  case be_verbose
  when :be_verbose
    be_verbose = true
  end
  this_file = save_essid_where?
  if File.exist? this_file
    this_essid = YAML.load_file(this_file)
    if be_verbose
      opne "Loading essid from #{sfile(this_file)} "\
           "(#{orange(this_essid.to_s)})"
    end
    set_essid(
      this_essid,
      :do_not_save_again # Do not save it again.
    )
  end
end

#determine_the_available_essid_devices(run_this_command = 'iwlist scan | grep ESSID', result = nil) ⇒ Object Also known as: scan_for_available_essids

#

determine_the_available_essid_devices

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 401

def determine_the_available_essid_devices(
    run_this_command = 'iwlist scan | grep ESSID',
    result           = nil
  )
  if result.nil?
    result = `#{run_this_command}`
  end
  @internal_hash[:array_discovered_essid_devices] = result.split("\n").select {|line|
    line.include? 'ESSID:'
  }.map {|entry|
    entry.sub(/ESSID:/,'').delete(':"').lstrip
  }.reject {|inner_entry| inner_entry.to_s.empty? }
end

#do_connect_to_the_main_wlan_device_automatically ⇒ Object

#

do_connect_to_the_main_wlan_device_automatically

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1093

def do_connect_to_the_main_wlan_device_automatically
  opne 'Trying to set up the WLAN connection automatically.'
  ip_link_set_wlan_up
  invoke_default_wpa_passphrase
  run_background_wpa_supplicant_command
  start_dhclient
end

#do_smart_startup_sequence ⇒ Object

#

do_smart_startup_sequence

To invoke this method from the commandline, try:

wlan --smart
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 854

def do_smart_startup_sequence
  e 'This method will do a "smart" startup sequence, meaning that it'
  e 'will attempt to fully bring up the (main) wlan interface, using'
  e 'the pre-determined ESSID and wlan-device name.'
  e
  e "First, we will feedback some information. The #{gold('ESSID')} is:"
  report_essid
  e 'Next we will set the essid; then we perform ifconfig up.'
  startup_wlan
end

#essid? ⇒ Boolean Also known as: main_essid?, query_essid_value

#

essid?

#

Returns:

  • (Boolean) 


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# File 'lib/roebe/classes/wlan/wlan.rb', line 236

def essid?
  @internal_hash[:use_this_essid].to_s.chomp
end

#feedback_the_essid_we_will_use ⇒ Object

#

feedback_the_essid_we_will_use

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1154

def feedback_the_essid_we_will_use
  if essid?.empty?
    opne 'We have not yet designated a proper ESSID.'
    opne 'If you wish to set one, you may wish to do something like this:'
    e
    efancy '  wlan set_essid BLABLABLA'
    if is_on_roebe?
      verbose_show_the_default_essid
    end
    e
  else
    opne 'The ESSID we will use is:'
    e
    report_raw_essid
    e
  end
end

#help_about_wpa ⇒ Object

#

help_about_wpa

Invoke this method via:

wlan --wpa
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 911

def help_about_wpa
  opne 'Try to issue the following command if you have problems '\
       'with WPA-based networks:'
  e
  opne sfancy('  wlan --wpa')
  e
  opne "The file #{sfile('/etc/wpa_supplicant.conf')} often "\
       "contains useful information."
  e
end

#home_essid? ⇒ Boolean

#

home_essid?

#

Returns:

  • (Boolean) 


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# File 'lib/roebe/classes/wlan/wlan.rb', line 182

def home_essid?
  @internal_hash[:home_essid]
end

#interactive_query ⇒ Object

#

interactive_query

This method can be used to query the user for relevant input, in order to properly set up the WLAN connection at hand.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 133

def interactive_query
  e 'The following functionality can be used to interactively determine '
  e 'the relevant parameters for your WLAN connection.'
  e
  e 'First we will show the available ESSIDs:'
  e
  show_available_essids
  e
  e 'The available ESSID devices are:'
  e
  determine_the_available_essid_devices
  e
  pp array_discovered_essid_devices?
  e
  scan_for_wlans
  e
  report_name_of_the_wlan_device
  e
  show_to_the_user_how_to_use_the_wpa_passphrase_command
  e
  e 'The name of the WLAN device is: '+sfancy(name_of_the_wlan_device?)
  e
  e 'Now, input the ESSID to use (default: '+steelblue(HOME_ESSID)+'):'
  e '(You can use :default as input for the default-password.)'
  user_input = $stdin.gets.chomp
  @internal_hash[:home_essid] = user_input
  case user_input
  when ':default'
    user_input = default_password?
  end
  e "This password (#{steelblue(user_input)}) will be "\
    "stored into the file #{sfile(SAVE_ESSID_HERE)}."
  write_what_into(@internal_hash[:home_essid], SAVE_ESSID_HERE)
  e
  e 'Next running the dhclient command:'
  br
  run_proper_dhclient_command
end

#invoke_default_wpa_passphrase(use_this_password = password? ) ⇒ Object

#

invoke_default_wpa_passphrase

This method will make use of the default password to be stored into the wpa-supplicant config file.

To invoke this method from the commandline, try:

wlan --invoke-default-wpa-passphrase
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 998

def invoke_default_wpa_passphrase(
    use_this_password = password?
  )
  _ = '  wpa_passphrase '+return_main_essid+' '+
      use_this_password+' >> '+FILE_WPA_SUPPLICANT_CONF
  esystem _.lstrip, :do_colourize
end

#ip_link_set_wlan_up(this_interface = name_of_the_wlan_device? ) ⇒ Object

#
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 925

def ip_link_set_wlan_up(
    this_interface = name_of_the_wlan_device?
  )
  esystem "ip link set #{this_interface} up", :do_colourize
end

#load_and_return_main_essid(this_file = save_essid_where? ) ⇒ Object Also known as: return_main_essid

#

load_and_return_main_essid

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1191

def load_and_return_main_essid(
    this_file = save_essid_where?
  )
  if File.exist? this_file
    YAML.load_file(this_file)
  else
    opne 'No file exists at '+sfile(this_file)+'.'
    ''
  end
end

#menu(i = commandline_arguments? ) ⇒ Object Also known as: intercept_commandline_arguments

#

menu (menu tag)

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 419

def menu(
    i = commandline_arguments?
  )
  if i.is_a? Array
    i = i.join(' ').strip
  end
  case i # case tag
  # ======================================================================= #
  # === wlan --run-dhclient
  # ======================================================================= #
  when /^-?-?run(_|-)?dhclient$/i
    run_proper_dhclient_command
    exit
  # ======================================================================= #
  # === wlan --main-file?
  # ======================================================================= #
  when /^-?-?main(_|-)?file\??$/i
    e SAVE_ESSID_HERE
    exit
  # ======================================================================= #
  # === wlan --essid
  # ======================================================================= #
  when /^-?-?essid\??$/, # wlan --essid?
       /^essid\??$/,
       /ESSID/ # This also includes essid?
    if i.include? '?' # Trigger this via: wlan --essid?
      consider_restoring_essid if essid?.empty?
      feedback_the_essid_we_will_use
    else
      show_available_essids
    end
    exit
  # ======================================================================= #
  # === wlan rfkill?
  # ======================================================================= #
  when /^-?-?rfkill\??$/i,
       /^-?-?rfkill(_|-)?status\??$/i
    verbose_run_rfkill_list_all_command
    exit
  # ======================================================================= #
  # === wlan run_background_wpa_supplicant_command
  #
  # This entry point essentially runs the "wpa_supplicant -B -D wext -i"
  # command.
  # ======================================================================= #
  when /^-?-?run(_|-)?background(_|-)?wpa(_|-)?supplicant(_|-)?command$/i,
       /^-?-?background$/i,
       /^-?-?bg$/i,
       /^-?-?wpa(_|-)?startup$/i,
       /^5$/
    run_background_wpa_supplicant_command
    exit
  # ======================================================================= #
  # === wlan 1
  # ======================================================================= #
  when /^1$/
    show_available_wlan_devices
    exit
  # ======================================================================= #
  # === wlan --set_default_essid_for_the_laptop
  # ======================================================================= #
  when /^-?-?set(_|-)?default(_|-)?essid(_|-)?for(_|-)?the(_|-)?laptop$/i,
       /^-?-?default(_|-)?essid(_|-)?for(_|-)?the(_|-)?laptop$/i
    e
    e 'Setting the default ESSID for the laptop next.'
    e
    set_default_essid_for_the_laptop(:also_save_it)
    exit
  # ======================================================================= #
  # === wlan --show_available_essids
  # ======================================================================= #
  when /^-?-?show(-|_| )?available(-|_| )?essids$/i,
       /^-?-?show(-|_| )?essids$/i,
       /^-?-?show(-|_| )?available\??$/i
    show_available_essids
  # ======================================================================= #
  # === wlan --smart-start
  #
  # This entry point will do a "smart" startup sequence, primarily
  # optimized for my laptop.
  # ======================================================================= #
  when /^-?-?smart(_|-)?start$/i,
       /^-?-?do(_|-)?smart(_|-)?startup(_|-)?sequence$/i,
       /^-?-?smart$/i,
       /^-?-?steps\??$/i
    do_smart_startup_sequence
    exit
  # ======================================================================= #
  # === wlan --autogenerate
  #
  # This entry point will autogenerate the configuration file that
  # is specific for the wpa_passphrase command. This is tailored to
  # my own use case, so it will probably be utterly useless for
  # other people.
  # ======================================================================= #
  when /^-?-?autogenerate(_|-)?configuration(_|-)?file(_|-)?for(_|-)?the(_|-)?wpa(_|-)?passphrase$/i,
       /^-?-?autogenerate$/i,
       /^4$/
    autogenerate_configuration_file_for_the_wpa_passphrase
    exit
  # ======================================================================= #
  # === wlan --ip_link_set_wlan_up
  # ======================================================================= #
  when /^-?-?ip(_|-)?link(_|-)?set(_|-)?wlan(_|-)?up$/i,
       /^3$/
    ip_link_set_wlan_up
    exit
  # ======================================================================= #
  # === wlan UPC
  # ======================================================================= #
  when /^UPC(.+)$/
    set_essid(i) { :be_verbose }
    exit
  # ======================================================================= #
  # === wlan --connected?
  #
  # Query whether we are wlan-connected or not (yes/no boolean).
  # ======================================================================= #
  when /^-?-?connected\??$/i,
       /^-?-?are(_|-)?we(_|-)?connected\??$/i
    query_whether_we_are_wlan_connected
    exit
  # ======================================================================= #
  # === wlan --password
  # ======================================================================= #
  when /^-?-?password$/i,
       /^-?-?passwords$/i,
       /^-?-?wpa(_|-)?passwords$/i,
       /^-?-?pass\??$/i,
       /^-?-?passphrase$/i # === wlan --passphrase
    show_to_the_user_how_to_use_the_wpa_passphrase_command
    exit
  # ======================================================================= #
  # === wlan --show-available-essids-then-debug
  # ======================================================================= #
  when /^-?-?show(-|_| )?available(-|_| )?essids(-|_| )?then(-|_| )?debug$/i,
       /^-?-?available\??$/i,
       /^-?-?available(-|_| )?essids\??$/i,
       /^-?-?top$/i
    show_available_essids
    show_debug_information
    exit
  # ======================================================================= #
  # === wlan --wlan-set-device=wlan0
  # ======================================================================= #
  when /^-?-?wlan(-|_| )?set(-|_| )?device=(.+)$/i,
       /^-?-?set(-|_| )?wlan(-|_| )?device=(.+)$/i,
       /^-?-?set(-|_| )?device=(.+)$/i
    _ = $2.to_s.dup
    _ = $3.to_s.dup if $3
    set_main_wlan_device(_)
    exit
  # ======================================================================= #
  # === wlan --set
  #
  # This entry point allows us to set to a specific ESSID.
  #
  # Invocation examples:
  #
  #   wlan --set
  #   wlan --set UPC1371700
  #
  # ======================================================================= #
  when /^-?-?set(-|_| )?essid(.+)?/i, # $2
       /^-?-?set(-|_| )?ssid(.+)?/i,  # $2
       /^-?-?ESSID(.+)?/i             # $1
    _ = nil
    _ = $1.to_s.dup if $1
    _ = $2.to_s.dup if $2
    set_essid(_)
    exit
  # ======================================================================= #
  # === wlan --debug?
  #
  # Show some debug-information.
  # ======================================================================= #
  when /^-?-?debug\??$/i
    show_debug_information
  # ======================================================================= #
  # === wlan --help
  # ======================================================================= #
  when /^he/,
       /^-?-?help/,
       /^HELP$/
    show_help(:then_exit)
  # ======================================================================= #
  # === wlan --default
  # ======================================================================= #
  when /^-?-?default$/
    _ 'iwconfig wlan0'
    exit
  # ======================================================================= #
  # === wlan --open
  # ======================================================================= #
  when /^-?-?open$/i
    open_this_file_here_in_editor
    exit
  # ======================================================================= #
  # === wlan --configure
  # ======================================================================= #
  when /^-?-?configure$/
    e 'iwconfig '+wlan_device_name?+' essid NETWORK_ID key WIRELESS_KEY'
  # ======================================================================= #
  # === wlan --laptop
  # ======================================================================= #
  when /^-?-?laptop$/i
    automatically_start_the_wlan_device_on_my_laptop
  # ======================================================================= #
  # === wlan --use-passphrase
  #
  # The passphrase follows this usage-scheme:
  #
  #   wpa_passphrase <ssid> [passphrase]
  #
  # ======================================================================= #
  when /^-?-?use(_|-)?passphrase$/i,
       /^-?-?do(_|-)?use(_|-)?passphrase$/i,
       /^-?-?invoke(_|-)?default(_|-)?wpa(_|-)?passphrase$/i,
       /^-?-?wpa(_|-)?passphrase$/i, # === wlan wpa-passphrase
       /^-?-?pass$/i,
       /^-?-?wpa$/i,
       /^-?-?wpasupplicant$/i
    invoke_default_wpa_passphrase
    exit
  # ======================================================================= #
  # === wlan --up
  # ======================================================================= #
  when /^-?-?up$/i,
       /^-?-?startup(_|-)?wlan$/i,
       /^-?-?wlan(_|-)?up$/i
    startup_wlan # up tag
    exit
  # ======================================================================= #
  # === wlan --interactive
  # ======================================================================= #
  when /^-?-?interactive$/i # === wlan --interactive
    interactive_query
    exit
  # ======================================================================= #
  # === wlan --home-essid?
  #
  # This entry point will show the ESSID in use.
  # ======================================================================= #
  when /^-?-?home(_|-)?essid\??$/i,
       /^-?-?essid\?$/i,  # === wlan --essid?
       /^-?-?hessid\??$/i # === wlan --hessid
    show_home_essid
    exit
  # ======================================================================= #
  # === wlan autofix_rfkill_problem
  # ======================================================================= #
  when /^-?-?autofix(_|-)?rfkill(_|-)?problem$/i,
       /^-?-?autofix$/i, # === wlan --autofix
       /^-?-?unblock$/i # === wlan --unblock
    autofix_rfkill_problem
    exit
  # ======================================================================= #
  # === wlan --scan
  # ======================================================================= #
  when /^-?-?scan$/ # scan tag
    scan_for_wlans
    scan_for_available_essids
    scan_for_accesspoints
    exit
  # ======================================================================= #
  # === wlan --connect
  # ======================================================================= #
  when /^-?-?connect$/
    connect_to_wlan
  # ======================================================================= #
  # === wlan --access
  # ======================================================================= #
  when /^-?-?access$/
    scan_for_accesspoints
    exit
  # ======================================================================= #
  # === wlan --scan-for-wlans
  #
  # An alias to this is:
  #
  #   wlan --scan-for-essid
  #
  # ======================================================================= #
  when /^-?-?scan(-|_| )?for(-|_| )?wlans$/,
       /^-?-?scan(-|_| )?for(-|_| )?essid$/
    scan_for_wlans
    exit
  # ======================================================================= #
  # === wlan --automatic
  # ======================================================================= #
  when /^-?-?automatic$/i,
       /^-?-?startup$/i
    do_connect_to_the_main_wlan_device_automatically
    exit
  # ======================================================================= #
  # === wlan dhclient
  # ======================================================================= #
  when /^-?-?dhclient$/i,
       /^-?-?dhc$/i,
       /^6$/
    run_dhclient_command
    exit
  # ======================================================================= #
  # === wlan --name?
  #
  # This entry point will feedback the main wlan-device in use.
  #
  # Invocation examples:
  #
  #   wlan --name?
  #   wlan --device-name?
  #   wlan --device?
  #
  # ======================================================================= #
  when /^-?-?name?/i,
       /^-?-?device(-|_)?name?$/i,
       /^-?-?device\?$/i
    report_name_of_the_wlan_device
    exit
  else
    # else handle special cases:
    case i
    # ======================================================================= #
    # === Operation not possible due to RF-kill
    # ======================================================================= #
    when /Operation not possible due to RF-kill$/i
      autofix_rfkill_problem
    end
  end
end

#name_of_the_wlan_device?(file_path = FILE_NAME_FOR_THE_WIRELESS_INTERFACE) ⇒ Boolean Also known as: wlan_device_name?, main_wlan_device?

#

name_of_the_wlan_device?

#

Returns:

  • (Boolean) 


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# File 'lib/roebe/classes/wlan/wlan.rb', line 829

def name_of_the_wlan_device?(
    file_path = FILE_NAME_FOR_THE_WIRELESS_INTERFACE
  )
  YAML.load_file(file_path)
end

#open_this_file_here_in_editor ⇒ Object

#

open_this_file_here_in_editor (open tag)

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 899

def open_this_file_here_in_editor
  esystem "bluefish #{FILE} &"
end

#password? ⇒ Boolean Also known as: default_password?

#

password?

#

Returns:

  • (Boolean) 


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# File 'lib/roebe/classes/wlan/wlan.rb', line 753

def password?
  '1aaaaaaaaa'
end

#query_whether_we_are_wlan_connected ⇒ Object

#

query_whether_we_are_wlan_connected

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 348

def query_whether_we_are_wlan_connected
  cmd_to_use = 'iw wlan0 link'
  e sfancy(cmd_to_use)
  result = `#{cmd_to_use}`
  e result
end

#report_name_of_the_wlan_device ⇒ Object

#

report_name_of_the_wlan_device

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 374

def report_name_of_the_wlan_device
  e 'The name of the main wlan-device is:'
  e
  e sfile("  #{name_of_the_wlan_device?}")
  e
end

#report_raw_essid ⇒ Object Also known as: report_essid, report_the_raw_essid

#

report_raw_essid

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 760

def report_raw_essid
  e "  #{sfancy(essid?)}" # ← Show it on a new line on its own.
end

#reset ⇒ Object

#

reset (reset tag)

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 204

def reset
  super()
  infer_the_namespace
  # ======================================================================= #
  # === :be_verbose
  # ======================================================================= #
  set_be_verbose
  # ======================================================================= #
  # === :array_discovered_essid_devices
  # ======================================================================= #
  @internal_hash[:array_discovered_essid_devices] = []
  # ======================================================================= #
  # === :home_essid
  # ======================================================================= #
  @internal_hash[:home_essid] = nil
  # ======================================================================= #
  # === :use_this_essid
  # ======================================================================= #
  @internal_hash[:use_this_essid] = nil # Which ESSID to use.
  # ======================================================================= #
  # === :array_discovered_essid_devices
  #
  # The following Array keeps track of the the found ESSID devices in
  # the local environment.
  # ======================================================================= #
  @internal_hash[:array_discovered_essid_devices] = []
  consider_reading_the_essid_entry_from_a_file
end

#run ⇒ Object

#

run (run tag)

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1291

def run
  menu
  consider_restoring_essid(:be_verbose)
  show_intro_message
  run_various_commands
  scan_for_wlans
  help_about_wpa
end

#run_already? ⇒ Boolean

#

run_already?

#

Returns:

  • (Boolean) 


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# File 'lib/roebe/classes/wlan/wlan.rb', line 175

def run_already?
  @run_already
end

#run_background_wpa_supplicant_command(name_of_the_wlan_device = name_of_the_wlan_device? ) ⇒ Object Also known as: run_wpa_command

#

run_background_wpa_supplicant_command

This method will run the actual wpa_supplicant command.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 889

def run_background_wpa_supplicant_command(
    name_of_the_wlan_device = name_of_the_wlan_device?
  )
  _ = 'wpa_supplicant -B -D wext -i '+name_of_the_wlan_device+' -c /etc/wpa_supplicant.conf'
  esystem _, :do_colourize
end

#run_proper_dhclient_command(i = name_of_the_wlan_device? ) ⇒ Object Also known as: obtain_ip, run_dhclient_command, start_dhclient

#

run_proper_dhclient_command

This method will essentially just wrap around bin/dhclient.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1275

def run_proper_dhclient_command(
    i = name_of_the_wlan_device?
  )
  _ = "dhclient -v #{i}"
  _result = esystem(_, :do_colourize)
  if _result.nil? or (_result == false)
    opne "The `#{steelblue('dhclient')}` binary "\
         "does not appear to be available locally."
  end
end

#run_rfkill_list_all_command ⇒ Object

#

run_rfkill_list_all_command

This method will simply invoke “rfkill list all”.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 822

def run_rfkill_list_all_command
  esystem 'rfkill list all'
end

#run_various_commands ⇒ Object

#

run_various_commands

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 868

def run_various_commands
  array = %w(
    dhclient
    ifconfig
    iwlist
    iwconfig
    wpa_supplicant
  )
  opne 'The various commands can be found here:'+N+N
  array.each {|command|
    e command
    result = `which #{command} 2>&1`
    efancy '  '+result.chomp
  }
end

#save_essid(be_verbose = be_verbose? ) ⇒ Object

#

save_essid (store tag)

This method will save the ESSID value into a file.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 333

def save_essid(
    be_verbose = be_verbose?
  )
  what = YAML.dump(essid?)
  where = save_essid_where?
  mkdir(File.dirname(where))
  if be_verbose
    opne "Next saving #{sfancy(essid?)} into `#{sfile(where)}`."
  end
  save_what_into(what, where)
end

#save_essid_where? ⇒ Boolean

#

save_essid_where?

#

Returns:

  • (Boolean) 


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1184

def save_essid_where?
  SAVE_ESSID_HERE
end

#scan_for_accesspoints ⇒ Object Also known as: show_available_wlan_devices

#

scan_for_accesspoints

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 934

def scan_for_accesspoints
  esystem "iw dev #{name_of_the_wlan_device?} scan | grep SSID"
end

#scan_for_wlans ⇒ Object

#

scan_for_wlans (scan tag)

All this does, basically, is to run:

iwlist wlan0 scan

From the commandline, this can be invoked via:

roebe --scan-for-wlans
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1113

def scan_for_wlans
  e
  opne "Next, we will scan for nearby #{slateblue('WLANs')}.#{N}"
  e
  cmd = "iwlist #{main_wlan_device?} scan"
  e "  #{sfancy(cmd.chomp)}"
  e
  result = `#{cmd}`
  unless result.empty?
    opne result.chomp
  end
  if result.include? 'ESSID' 
    opnn; efancy 'Look for ESSID entries above. (from the command: '+
          simp(cmd)+sfancy(')')
    opne 'ESSID [NETWORK_NAME]'
    opne 'Where NETWORK_NAME is the name of an available '\
         'wireless network.'
  end
  opne "iwconfig wlan0 essid NETWORK_NAME key WIRELESS_KEY#{N}#{N}"
  e 'Where '+yel('NETWORK_NAME')+' is the name of the network you want to connect'
  e 'to and WIRELESS_KEY is the security key for that network.'
  e
  e 'NOTE:'
  e
  e 'The iwconfig command defaults to HEX values for wireless keys.'
  e
  e 'If you need to use ASCII then you have to prepend the "s" prefix to'
  e 'your key like so:'
  e
  e sfancy("  iwconfig wlan0 essid NETWORK_NAME key s:WIRELESS_KEY#{N}#{N}")
  e
  e 'With your connection made, you now have to get an IP address for '
  e 'your machine using the dhclient command like:'
  e
  e sfancy('  dhclient wlan0')
  e
end

#set_default_essid_for_the_laptop(i = :do_not_save_this_value) ⇒ Object

#

set_default_essid_for_the_laptop

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1175

def set_default_essid_for_the_laptop(
    i = :do_not_save_this_value
  )
  set_essid(HOME_ESSID, i)
end

#set_essid(i = nil, save_new_essid = true) ⇒ Object

#

set_essid (essid tag)

To invoke this method, do:

wlan set_essid BLABLABLA

The second argument tells us whether we will save this new essid file or whether we won’t.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1212

def set_essid(
    i              = nil,
    save_new_essid = true
  )
  i = i.to_s.dup if i.nil?
  # ======================================================================= #
  # Next do a little bit of sanitizing:
  # ======================================================================= #
  if i.include? '-device='
    i.sub!(/-device=/,'')
  end
  set_be_quiet if save_new_essid == :be_silent
  if block_given?
    yielded = yield
    case yielded
    # ===================================================================== #
    # === :be_verbose
    # ===================================================================== #
    when :be_verbose
      set_be_verbose
    end
  end
  i.delete!('=') if i.include? '='
  case save_new_essid
  # ======================================================================= #
  # === :do_not_save_this_value
  # ======================================================================= #
  when :do_not_save_this_value,
       :do_not_save_again
    save_new_essid = false
  when :also_save_it
    save_new_essid = true
  end
  if save_new_essid.to_s.include? 'do_not'
    save_new_essid = false
  end
  if i.include? ' '
    i.strip!
    if i.include? ' '
      # =================================================================== #
      # We simply split the input if it still has any ' ' character.
      # =================================================================== #
      i = i.split(' ')[1]
    end
  end
  i = i.chomp.strip
  @internal_hash[:use_this_essid] = i
  save_essid if save_new_essid
end

#set_main_wlan_device(i) ⇒ Object

#

set_main_wlan_device

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 839

def set_main_wlan_device(i)
  e "Setting to the new wlan-device name `#{sfancy(i)}`."
  what = i
  into = FILE_NAME_FOR_THE_WIRELESS_INTERFACE
  write_what_into(what, into)
end

#show_available_essids ⇒ Object

#

show_available_essids

Show the available essids in the surrounding.

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 386

def show_available_essids
  opne 'We will next show all available ESSIDs:'
  e
  run_this_command = 'iwlist scan | grep ESSID'
  result = `#{run_this_command}`
  e sfancy(run_this_command)
  determine_the_available_essid_devices(
    run_this_command, result
  )
  e
end

#show_debug_information ⇒ Object

#

show_debug_information (debug tag)

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 304

def show_debug_information
  e '@internal_hash[:array_discovered_essid_devices]:'
  e
  pp array_discovered_essid_devices?
  e
end

#show_help(optional_shall_we_exit = false) ⇒ Object

#

show_help (help tag)

To invoke this method from the commandline, do:

wlan --help
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1014

def show_help(
    optional_shall_we_exit = false
  )
  case optional_shall_we_exit
  when :then_exit
    optional_shall_we_exit = true
  end
  opnn { :no_trailing }
  e
  e
  e "These are the #{slateblue('documented help options')}:"
  e
  ecomment '    wlan '+mediumorchid('up')+'                     '\
           '# start wlan; bring up the wlan interface' # up tag
  ecomment '    wlan '+mediumorchid('set_essid')+'              '\
           '# set the essid'
  ecomment '    wlan '+mediumorchid('background')+'             '\
           '# start the wpa_supplicant command in the background'
  ecomment '    wlan '+mediumorchid('set-device')+'             '\
           '# set to a specific wlan device such as "wlan0"'
  ecomment '    wlan '+mediumorchid('device?')+'                '\
           '# query which device is presently in use'
  ecomment '    wlan '+mediumorchid('essid?')+'                 '\
           '# feedback the main ESSID in use'
  ecomment '    wlan '+mediumorchid('interactive?')+'           '\
           '# use the class interactively'
  ecomment '    wlan '+mediumorchid('name?')+'                  '\
           '# show the name of the main '\
           'wlan-interface, such as "wlan2"'
  ecomment '    wlan '+mediumorchid('dhclient')+'               '\
           '# start up dhclient to the main wlan-interface'
  ecomment '                                # (this is similar to dhcpcd)'
  ecomment '    wlan '+mediumorchid('scan')+'                   '\
           '# scan for access points'
  ecomment '    wlan '+mediumorchid('connected?')+'             '\
           '# determine whether we are connected to the '\
           'wlan (yes/no possibility)'
  ecomment '    wlan '+mediumorchid('automatic')+'              '\
           '# try to bring up the wlan interface automatically'
  ecomment '    wlan '+mediumorchid('autofix_rfkill_problem')+' '\
           '# autofix rf-kill related issues'
  ecomment '    wlan '+mediumorchid('autogenerate')+'           '\
           '# autogenerate the .conf file '\
           'required by wpa_passphrase (for my home system)'
  ecomment '    wlan '+mediumorchid('smart')+'                  '\
           '# do a smart (semi-automatic) '\
           'startup for the main wlan device'
  ecomment '    wlan '+mediumorchid('connect')+'                '\
           '# connect to an access points'
  ecomment '    wlan '+mediumorchid('laptop')+'                 '\
           '# connect my home laptop at once'
  ecomment '    wlan '+mediumorchid('main-file?')+'             '\
           '# show in which file the main ESSID is stored'
  e
  e "Note that all entries support a leading #{steelblue('--')}"\
    ", such as in #{orange('wlan --essid?')}"
  e "or in #{orange('wlan --scan')}."
  e
  exit if optional_shall_we_exit
end

#show_home_essid ⇒ Object

#

show_home_essid

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 780

def show_home_essid
  efancy(main_essid?)
end

#show_intro_message ⇒ Object

#

show_intro_message

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1078

def show_intro_message
  opne "We will #{slateblue('scan')} for available "\
       "wlan-associated data next.#{N}#{N}"
end

#show_to_the_user_how_to_use_the_wpa_passphrase_command ⇒ Object Also known as: show_passphrase

#

show_to_the_user_how_to_use_the_wpa_passphrase_command

To show this on the commandline do:

wlan --password
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 363

def show_to_the_user_how_to_use_the_wpa_passphrase_command
  opne 'The way how to store a '+slateblue('passphrase')+' is by doing this:'
  e
  e simp('  wpa_passphrase SSID PASSPHRASE >> /etc/wpa_supplicant.conf')
  e simp('  wpa_passphrase '+return_main_essid+' '+default_password?+' >> /etc/wpa_supplicant.conf')
  e
end

#startup_wlan(this_interface = name_of_the_wlan_device? ) ⇒ Object

#

startup_wlan

For this method to work properly, the ESSID must have been stored PRIOR to calling it.

To invoke this from the commandline, do:

roebe --startup-wlan
#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 291

def startup_wlan(
    this_interface = name_of_the_wlan_device?
  )
  ip_link_set_wlan_up(this_interface)
  esystem 'iwconfig '+this_interface+' essid '+essid?
  esystem 'ifconfig '+this_interface+' up'
  run_background_wpa_supplicant_command
  obtain_ip
end

#verbose_run_rfkill_list_all_command ⇒ Object

#

verbose_run_rfkill_list_all_command

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 768

def verbose_run_rfkill_list_all_command
  e 'Issuing this command next:'
  e
  e sfancy('  rfkill list all')
  e
  run_rfkill_list_all_command
  e
end

#verbose_show_the_default_essid ⇒ Object

#

verbose_show_the_default_essid

#


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# File 'lib/roebe/classes/wlan/wlan.rb', line 1265

def verbose_show_the_default_essid
  opne 'The default ESSID is: '+
       steelblue(HOME_ESSID)
end