Module: PWN::Plugins::GQRX

Defined in:
lib/pwn/plugins/gqrx.rb

Overview

This plugin interacts with the remote control interface of GQRX.

Class Method Summary collapse

Class Method Details

.assume_profile(opts = {}) ⇒ Object

Supported Method Parameters

opts = PWN::Plugins::GQRX.assume_profile(

profile: 'required - valid GQRX profile name returned from #list_profiles method'

)



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# File 'lib/pwn/plugins/gqrx.rb', line 600

public_class_method def self.assume_profile(opts = {})
  profile = opts[:profile].to_s.to_sym

  profiles_available = list_profiles
  opts = {}
  case profile
  when :ads_b978
    opts = profiles_available[:ads_b978]
  when :ads_b1090
    opts = profiles_available[:ads_b1090]
  when :analog_tv_vhf
    opts = profiles_available[:analog_tv_vhf]
  when :analog_tv_uhf
    opts = profiles_available[:analog_tv_uhf]
  when :am_radio
    opts = profiles_available[:am_radio]
  when :bluetooth
    opts = profiles_available[:bluetooth]
  when :cdma
    opts = profiles_available[:cdma]
  when :cw20
    opts = profiles_available[:cw20]
  when :cw40
    opts = profiles_available[:cw40]
  when :cw80
    opts = profiles_available[:cw80]
  when :gps12
    opts = profiles_available[:gps12]
  when :gps15
    opts = profiles_available[:gps15]
  when :gsm
    opts = profiles_available[:gsm]
  when :fm_radio
    opts = profiles_available[:fm_radio]
  when :high_rfid
    opts = profiles_available[:high_rfid]
  when :lora433
    opts = profiles_available[:lora433]
  when :lora915
    opts = profiles_available[:lora915]
  when :low_rfid
    opts = profiles_available[:low_rfid]
  when :keyfob300
    opts = profiles_available[:keyfob300]
  when :keyfob310
    opts = profiles_available[:keyfob310]
  when :keyfob315
    opts = profiles_available[:keyfob315]
  when :keyfob390
    opts = profiles_available[:keyfob390]
  when :rtty20
    opts = profiles_available[:rtty20]
  when :rtty40
    opts = profiles_available[:rtty40]
  when :rtty80
    opts = profiles_available[:rtty80]
  when :ssb10
    opts = profiles_available[:ssb10]
  when :ssb12
    opts = profiles_available[:ssb12]
  when :ssb15
    opts = profiles_available[:ssb15]
  when :ssb17
    opts = profiles_available[:ssb17]
  when :ssb20
    opts = profiles_available[:ssb20]
  when :ssb40
    opts = profiles_available[:ssb40]
  when :ssb80
    opts = profiles_available[:ssb80]
  when :ssb160
    opts = profiles_available[:ssb160]
  when :tempest
    opts = profiles_available[:tempest]
  when :wifi24
    opts = profiles_available[:wifi24]
  when :zigbee
    opts = profiles_available[:zigbee]
  else
    raise "ERROR: Invalid profile: #{profile}"
  end

  opts
rescue StandardError => e
  raise e
end

.authors ⇒ Object

Author(s)

0day Inc. <[email protected]>



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# File 'lib/pwn/plugins/gqrx.rb', line 701

public_class_method def self.authors
  "AUTHOR(S):
    0day Inc. <[email protected]>
  "
end

.connect(opts = {}) ⇒ Object

Supported Method Parameters

gqrx_sock = PWN::Plugins::GQRX.connect(

target: 'optional - GQRX target IP address (defaults to 127.0.0.1)',
port: 'optional - GQRX target port (defaults to 7356)'

)



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# File 'lib/pwn/plugins/gqrx.rb', line 14

public_class_method def self.connect(opts = {})
  target = opts[:target] ||= '127.0.0.1'
  port = opts[:port] ||= 7356

  PWN::Plugins::Sock.connect(target: target, port: port)
rescue StandardError => e
  raise e
end

.disconnect(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::GQRX.disconnect(

gqrx_sock: 'required - GQRX socket object returned from #connect method'

)



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# File 'lib/pwn/plugins/gqrx.rb', line 691

public_class_method def self.disconnect(opts = {})
  gqrx_sock = opts[:gqrx_sock]

  PWN::Plugins::Sock.disconnect(sock_obj: gqrx_sock)
rescue StandardError => e
  raise e
end

.gqrx_cmd(opts = {}) ⇒ Object

Supported Method Parameters

gqrx_resp = PWN::Plugins::GQRX.gqrx_cmd(

gqrx_sock: 'required - GQRX socket object returned from #connect method',
cmd: 'required - GQRX command to execute',
resp_ok: 'optional - Expected response from GQRX to indicate success'

)



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# File 'lib/pwn/plugins/gqrx.rb', line 30

public_class_method def self.gqrx_cmd(opts = {})
  gqrx_sock = opts[:gqrx_sock]
  cmd = opts[:cmd]
  resp_ok = opts[:resp_ok]

  # Most Recent GQRX Command Set:
  # https://raw.githubusercontent.com/gqrx-sdr/gqrx/master/resources/remote-control.txt
  # Supported commands:
  #  f Get frequency [Hz]
  #  F <frequency> Set frequency [Hz]
  #  m Get demodulator mode and passband
  #  M <mode> [passband]
  #     Set demodulator mode and passband [Hz]
  #     Passing a '?' as the first argument instead of 'mode' will return
  #     a space separated list of radio backend supported modes.
  #  l|L ?
  #     Get a space separated list of settings available for reading (l) or writing (L).
  #  l STRENGTH
  #     Get signal strength [dBFS]
  #  l SQL
  #     Get squelch threshold [dBFS]
  #  L SQL <sql>
  #     Set squelch threshold to <sql> [dBFS]
  #  l AF
  #     Get audio gain [dB]
  #  L AF <gain>
  #     Set audio gain to <gain> [dB]
  #  l <gain_name>_GAIN
  #     Get the value of the gain setting with the name <gain_name>
  #  L <gain_name>_GAIN <value>
  #     Set the value of the gain setting with the name <gain_name> to <value>
  #  p RDS_PI
  #     Get the RDS PI code (in hexadecimal). Returns 0000 if not applicable.
  #  u RECORD
  #     Get status of audio recorder
  #  U RECORD <status>
  #     Set status of audio recorder to <status>
  #  u DSP
  #     Get DSP (SDR receiver) status
  #  U DSP <status>
  #     Set DSP (SDR receiver) status to <status>
  #  u RDS
  #     Get RDS decoder to <status>.  Only functions in WFM mode.
  #  U RDS <status>
  #     Set RDS decoder to <status>.  Only functions in WFM mode.
  #  q|Q
  #     Close connection
  #  AOS
  #     Acquisition of signal (AOS) event, start audio recording
  #  LOS
  #     Loss of signal (LOS) event, stop audio recording
  #  LNB_LO [frequency]
  #     If frequency [Hz] is specified set the LNB LO frequency used for
  #     display. Otherwise print the current LNB LO frequency [Hz].
  #  \chk_vfo
  #     Get VFO option status (only usable for hamlib compatibility)
  #  \dump_state
  #     Dump state (only usable for hamlib compatibility)
  #  \get_powerstat
  #     Get power status (only usable for hamlib compatibility)
  #  v
  #     Get 'VFO' (only usable for hamlib compatibility)
  #  V
  #     Set 'VFO' (only usable for hamlib compatibility)
  #  s
  #     Get 'Split' mode (only usable for hamlib compatibility)
  #  S
  #     Set 'Split' mode (only usable for hamlib compatibility)
  #  _
  #     Get version
  #
  # Reply:
  #  RPRT 0
  #     Command successful
  #  RPRT 1
  #     Command failed

  gqrx_sock.write("#{cmd}\n")
  response = []
  got_freq = false
  # Read all responses from gqrx_sock.write
  timeout = 0.001 if timeout.nil?

  begin
    response.push(gqrx_sock.readline.chomp) while gqrx_sock.wait_readable(timeout)
    raise IOError if response.empty?
  rescue IOError
    timeout += 0.001
    retry
  end

  got_int_value_in_resp = true if response.first.to_i.positive?
  response = response.first if response.length == 1

  raise "ERROR!!! Command: #{cmd} Expected Resp: #{resp_ok}, Got: #{response}" if resp_ok && response != resp_ok

  if got_int_value_in_resp
    fixed_len_freq = format('%0.12d', response.to_i)
    freq_segments = fixed_len_freq.scan(/.{3}/)
    first_non_zero_index = freq_segments.index { |s| s.to_i.positive? }
    freq_segments = freq_segments[first_non_zero_index..-1]
    freq_segments[0] = freq_segments.first.to_i.to_s
    response = freq_segments.join('.')
  end

  # DEBUG
  # puts response.inspect
  # puts response.length

  response
rescue RuntimeError => e
  puts 'WARNING: RF Gain is not supported by the radio backend.' if e.message.include?('Command: L RF_GAIN')
  puts 'WARNING: Intermediate Gain is not supported by the radio backend.' if e.message.include?('Command: L IF_GAIN')
  puts 'WARNING: Baseband Gain is not supported by the radio backend.' if e.message.include?('Command: L BB_GAIN')

  raise e unless e.message.include?('Command: L RF_GAIN') ||
                 e.message.include?('Command: L IF_GAIN') ||
                 e.message.include?('Command: L BB_GAIN')
rescue StandardError => e
  raise e
end

.help ⇒ Object

Display Usage for this Module



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# File 'lib/pwn/plugins/gqrx.rb', line 709

public_class_method def self.help
  puts "USAGE:
    gqrx_sock = #{self}.connect(
    target: 'optional - GQRX target IP address (defaults to 127.0.0.1)',
      port: 'optional - GQRX target port (defaults to 7356)'
    )

    #{self}.gqrx_cmd(
      gqrx_sock: 'required - GQRX socket object returned from #connect method',
      cmd: 'required - GQRX command to execute',
      resp_ok: 'optional - Expected response from GQRX to indicate success'
    )

    #{self}.init_freq(
      gqrx_sock: 'required - GQRX socket object returned from #connect method',
      freq: 'required - Frequency to set',
      demodulator_mode: 'optional - Demodulator mode (defaults to WFM)',
      bandwidth: 'optional - Bandwidth (defaults to 200000)',
      lock_freq_duration: 'optional - Lock frequency duration (defaults to 0.5)',
      strength_lock: 'optional - Strength lock (defaults to -60.0)'
    )

    #{self}.scan_range(
      gqrx_sock: 'required - GQRX socket object returned from #connect method',
      demodulator_mode: 'required - Demodulator mode',
      bandwidth: 'required - Bandwidth',
      start_freq: 'required - Starting frequency',
      target_freq: 'required - Target frequency',
      precision: 'required - Precision',
      lock_freq_duration: 'optional - Lock frequency duration (defaults to 0.5)',
      strength_lock: 'optional - Strength lock (defaults to -60.0)'
    )

    profiles = #{self}.list_profiles

    opts = #{self}.assume_profile(
      profile: 'required - valid GQRX profile name returned from #list_profiles method'
    )

    #{self}.disconnect(
      gqrx_sock: 'required - GQRX socket object returned from #connect method'
    )

    #{self}.authors
  "
end

.init_freq(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::GQRX.init_freq(

gqrx_sock: 'required - GQRX socket object returned from #connect method',
freq: 'required - Frequency to set',
demodulator_mode: 'optional - Demodulator mode (defaults to WFM)',
bandwidth: 'optional - Bandwidth (defaults to 200000)',
lock_freq_duration: 'optional - Lock frequency duration (defaults to 0.5)',
strength_lock: 'optional - Strength lock (defaults to -60.0)'

)



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# File 'lib/pwn/plugins/gqrx.rb', line 161

public_class_method def self.init_freq(opts = {})
  gqrx_sock = opts[:gqrx_sock]
  freq = opts[:freq]
  demodulator_mode = opts[:demodulator_mode]
  bandwidth = opts[:bandwidth]
  lock_freq_duration = opts[:lock_freq_duration]
  strength_lock = opts[:strength_lock]

  demod_n_passband = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'm'
  )

  change_freq_resp = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: "F #{freq}",
    resp_ok: 'RPRT 0'
  )

  current_freq = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'f'
  )

  audio_gain_db = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'l AF'
  ).to_f

  current_strength = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'l STRENGTH'
  ).to_f

  current_squelch = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'l SQL'
  ).to_f

  rf_gain = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'l RF_GAIN'
  ).to_f

  if_gain = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'l IF_GAIN'
  ).to_f

  bb_gain = gqrx_cmd(
    gqrx_sock: gqrx_sock,
    cmd: 'l BB_GAIN'
  ).to_f

  init_freq_hash = {
    demod_mode_n_passband: demod_n_passband,
    frequency: current_freq,
    bandwidth: bandwidth,
    audio_gain_db: audio_gain_db,
    squelch: current_squelch,
    rf_gain: rf_gain,
    if_gain: if_gain,
    bb_gain: bb_gain,
    strength: current_strength,
    strength_lock: strength_lock,
    lock_freq_duration: lock_freq_duration
  }

  print '.'
  sleep lock_freq_duration if current_strength > strength_lock

  init_freq_hash
rescue StandardError => e
  raise e
end

.list_profiles ⇒ Object

Supported Method Parameters

profiles = PWN::Plugins::GQRX.list_profiles



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# File 'lib/pwn/plugins/gqrx.rb', line 333

public_class_method def self.list_profiles
  # TODO: Wifi5 / Wifi6 profiles,
  # migrate to a YAML file, and add
  # rSpec test to ensure all profiles
  # contain consistent key-value pairs
  {
    ads_b978: {
      start_freq: '978.000.000',
      target_freq: '979.000.000',
      demodulator_mode: :RAW,
      bandwidth: '1.000.000',
      precision: 5
    },
    ads_b1090: {
      start_freq: '1.090.000.000',
      target_freq: '1.091.000.000',
      demodulator_mode: :RAW,
      bandwidth: '1.000.000',
      precision: 5
    },
    analog_tv_vhf: {
      start_freq: '54.000.000',
      target_freq: '216.000.000',
      demodulator_mode: :WFM,
      bandwidth: '6.000',
      precision: 5
    },
    analog_tv_uhf: {
      start_freq: '470.000.000',
      target_freq: '890.000.000',
      demodulator_mode: :WFM,
      bandwidth: '6.000',
      precision: 5
    },
    am_radio: {
      start_freq: '540.000',
      target_freq: '1.700.000',
      demodulator_mode: :AM,
      bandwidth: '10.000',
      precision: 4
    },
    bluetooth: {
      start_freq: '2.400.000.000',
      target_freq: '2.485.000.000',
      demodulator_mode: :RAW,
      bandwidth: '1.000.000',
      precision: 5
    },
    cdma: {
      start_freq: '824.000.000',
      target_freq: '849.000.000',
      demodulator_mode: :RAW,
      bandwidth: '1.250.000',
      precision: 6
    },
    cw20: {
      start_freq: '14.000.000',
      target_freq: '14.350.000',
      demodulator_mode: :CW,
      bandwidth: '150',
      precision: 3
    },
    cw40: {
      start_freq: '7.000.000',
      target_freq: '7.300.000',
      demodulator_mode: :CW,
      bandwidth: '150',
      precision: 3
    },
    cw80: {
      start_freq: '3.500.000',
      target_freq: '3.800.000',
      demodulator_mode: :CW,
      bandwidth: '150',
      precision: 3
    },
    gps12: {
      start_freq: '1.227.600.000',
      target_freq: '1.227.700.000',
      demodulator_mode: :RAW,
      bandwidth: '2.000.000',
      precision: 6
    },
    gps15: {
      start_freq: '1.575.420.000',
      target_freq: '1.575.450.000',
      demodulator_mode: :RAW,
      bandwidth: '2.000.000',
      precision: 6
    },
    gsm: {
      start_freq: '935.000.000',
      target_freq: '960.000.000',
      demodulator_mode: :RAW,
      bandwidth: '200.000',
      precision: 4
    },
    fm_radio: {
      start_freq: '88.000.000',
      target_freq: '108.000.000',
      demodulator_mode: :WFM,
      bandwidth: '200.000',
      precision: 5
    },
    high_rfid: {
      start_freq: '13.560.000',
      target_freq: '13.570.000',
      demodulator_mode: :RAW,
      bandwidth: '2.000.000',
      precision: 3
    },
    lora433: {
      start_freq: '432.000.000',
      target_freq: '434.000.000',
      demodulator_mode: :RAW,
      bandwidth: '500.000',
      precision: 3
    },
    lora915: {
      start_freq: '914.000.000',
      target_freq: '916.000.000',
      demodulator_mode: :RAW,
      bandwidth: '500.000',
      precision: 3
    },
    low_rfid: {
      start_freq: '125.000',
      target_freq: '125.100',
      demodulator_mode: :RAW,
      bandwidth: '200.000',
      precision: 1
    },
    keyfob300: {
      start_freq: '300.000.000',
      target_freq: '300.100.000',
      demodulator_mode: :RAW,
      bandwidth: '50.000',
      precision: 4
    },
    keyfob310: {
      start_freq: '310.000.000',
      target_freq: '310.100.000',
      demodulator_mode: :RAW,
      bandwidth: '50.000',
      precision: 4
    },
    keyfob315: {
      start_freq: '315.000.000',
      target_freq: '315.100.000',
      demodulator_mode: :RAW,
      bandwidth: '50.000',
      precision: 4
    },
    keyfob390: {
      start_freq: '390.000.000',
      target_freq: '390.100.000',
      demodulator_mode: :RAW,
      bandwidth: '50.000',
      precision: 4
    },
    rtty20: {
      start_freq: '14.000.000',
      target_freq: '14.350.000',
      demodulator_mode: :RTTY,
      bandwidth: '170',
      precision: 3
    },
    rtty40: {
      start_freq: '7.000.000',
      target_freq: '7.300.000',
      demodulator_mode: :RTTY,
      bandwidth: '170',
      precision: 3
    },
    rtty80: {
      start_freq: '3.500.000',
      target_freq: '3.800.000',
      demodulator_mode: :RTTY,
      bandwidth: '170',
      precision: 3
    },
    ssb10: {
      start_freq: '28.000.000',
      target_freq: '29.700.000',
      demodulator_mode: :USB,
      bandwidth: '2.700',
      precision: 6
    },
    ssb12: {
      start_freq: '24.890.000',
      target_freq: '24.990.000',
      demodulator_mode: :USB,
      bandwidth: '2.700',
      precision: 6
    },
    ssb15: {
      start_freq: '21.000.000',
      target_freq: '21.450.000',
      demodulator_mode: :USB,
      bandwidth: '2.700',
      precision: 6
    },
    ssb17: {
      start_freq: '18.068.000',
      target_freq: '18.168.000',
      demodulator_mode: :USB,
      bandwidth: '2.700',
      precision: 6
    },
    ssb20: {
      start_freq: '14.000.000',
      target_freq: '14.350.000',
      demodulator_mode: :USB,
      bandwidth: '2.700',
      precision: 6
    },
    ssb40: {
      start_freq: '7.000.000',
      target_freq: '7.300.000',
      demodulator_mode: :LSB,
      bandwidth: '2.700',
      precision: 6
    },
    ssb80: {
      start_freq: '3.500.000',
      target_freq: '3.800.000',
      demodulator_mode: :LSB,
      bandwidth: '2.700',
      precision: 6
    },
    ssb160: {
      start_freq: '1.800.000',
      target_freq: '2.000.000',
      demodulator_mode: :LSB,
      bandwidth: '2.700',
      precision: 6
    },
    tempest: {
      start_freq: '400.000.000',
      target_freq: '430.000.000',
      demodulator_mode: :WFM,
      bandwidth: '200.000',
      precision: 4
    },
    wifi24: {
      start_freq: '2.400.000.000',
      target_freq: '2.500.000.000',
      demodulator_mode: :RAW,
      bandwidth: '20.000.000',
      precision: 7
    },
    zigbee: {
      start_freq: '2.405.000.000',
      target_freq: '2.485.000.000',
      demodulator_mode: :RAW,
      bandwidth: '2.000.000',
      precision: 7
    }
  }
rescue StandardError => e
  raise e
end

.scan_range(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::GQRX.scan_range(

gqrx_sock: 'required - GQRX socket object returned from #connect method',
demodulator_mode: 'required - Demodulator mode',
bandwidth: 'required - Bandwidth',
start_freq: 'required - Starting frequency',
target_freq: 'required - Target frequency',
precision: 'required - Precision',
lock_freq_duration: 'optional - Lock frequency duration (defaults to 0.5)',
strength_lock: 'optional - Strength lock (defaults to -60.0)'

)



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# File 'lib/pwn/plugins/gqrx.rb', line 249

public_class_method def self.scan_range(opts = {})
  gqrx_sock = opts[:gqrx_sock]
  demodulator_mode = opts[:demodulator_mode]
  bandwidth = opts[:bandwidth]
  start_freq = opts[:start_freq]
  target_freq = opts[:target_freq]
  precision = opts[:precision]
  lock_freq_duration = opts[:lock_freq_duration]
  strength_lock = opts[:strength_lock]

  multiplier = 10**(precision - 1)
  prev_freq_hash = {
    demod_mode_n_passband: demodulator_mode,
    frequency: start_freq,
    bandwidth: bandwidth,
    audio_gain_db: 0.0,
    squelch: 0.0,
    rf_gain: 0.0,
    if_gain: 0.0,
    bb_gain: 0.0,
    strength: 0.0,
    strength_lock: strength_lock,
    lock_freq_duration: lock_freq_duration
  }
  if start_freq > target_freq
    start_freq.downto(target_freq) do |freq|
      next unless (freq % multiplier).zero?

      init_freq_hash = init_freq(
        gqrx_sock: gqrx_sock,
        freq: freq,
        demodulator_mode: demodulator_mode,
        bandwidth: bandwidth,
        lock_freq_duration: lock_freq_duration,
        strength_lock: strength_lock
      )

      current_strength = init_freq_hash[:strength]
      prev_strength = prev_freq_hash[:strength]
      prev_freq = prev_freq_hash[:frequency]

      approaching_detection = true if current_strength > prev_strength &&
                                      current_strength > strength_lock
      if approaching_detection && current_strength <= prev_strength
        puts "\n**** Found a signal ~ #{prev_freq} Hz ****"
        puts JSON.pretty_generate(prev_freq_hash)
        approaching_detection = false
      end

      prev_freq_hash = init_freq_hash
    end
  else
    freq = start_freq
    while freq <= target_freq
      init_freq_hash = init_freq(
        gqrx_sock: gqrx_sock,
        demodulator_mode: demodulator_mode,
        bandwidth: bandwidth,
        freq: freq,
        lock_freq_duration: lock_freq_duration,
        strength_lock: strength_lock
      )

      current_strength = init_freq_hash[:strength]
      prev_strength = prev_freq_hash[:strength]
      prev_freq = prev_freq_hash[:frequency]

      approaching_detection = true if current_strength > prev_strength &&
                                      current_strength > strength_lock
      if approaching_detection && current_strength < prev_strength
        puts "\n**** Discovered a signal ~ #{prev_freq} Hz ****"
        puts JSON.pretty_generate(prev_freq_hash)
        approaching_detection = false
      end

      prev_freq_hash = init_freq_hash

      freq += multiplier
    end
  end
end