Module: Paraxial::Checker

Defined in:
lib/paraxial/checker.rb

Class Method Summary collapse

Class Method Details

.ban_ip_msg(ip, length, msg) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 133

def self.ban_ip_msg(ip, length, msg)
  if whitelist_ip?(ip)
    :on_whitelist
  elsif blacklist_ip?(ip)
    :already_banned
  else
    local_ban(ip)

    uri = URI.parse(Paraxial::Helpers.get_ruby_ban_url)
    body =
      {
        bad_ip: ip,
        ban_length: length,
        msg: msg,
        api_key: Paraxial::Helpers.get_api_key
      }
    r = Net::HTTP.post(uri, body.to_json, @headers)
    if r.code == '200'
      :ok
    else
      :error
    end
  end
end

.blacklist_ip?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/paraxial/checker.rb', line 194

def self.blacklist_ip?(ip)
  if ip.include?('.')
    !@bans['v4'].search_best(ip).nil? # v4 on allow list
  else
    !@bans['v6'].search_best(ip).nil? # v6 on allow list
  end
end

.create_patricia(list, type) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 115

def self.create_patricia(list, type)
  if type == 'v4'
    p = Patricia.new
    list.each do |ip|
      p.add(ip)
    end
    p
  elsif type == 'v6'
    p = Patricia.new(:AF_INET6)
    list.each do |ip|
      p.add(ip)
    end
    p
  else
    raise 'Wrong type in Paraxial::Checker.create_patricia'
  end
end

.flush_buffer ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 25

def self.flush_buffer
  @mutex.synchronize do
    requests = []
    until @buffer.empty?
      requests << @buffer.pop(true) rescue nil
    end

    send_async_request(requests) unless requests.empty?
  end
end

.get_abr ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 56

def self.get_abr
  uri = URI.parse(Paraxial::Helpers.get_abr_url)

  body = { api_key: Paraxial::Helpers.get_api_key }
  begin
    r = Net::HTTP.post(uri, body.to_json, @headers)
    if r.code == '200'
      put_abr(JSON.parse(r.body))
    else
      'ab_failed'
    end
  rescue StandardError => e
    puts '[Paraxial] HTTP connection to backend failed, check configuration'
    'ab_failed'
  end
end

.honeypot_ban(ip, length) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 158

def self.honeypot_ban(ip, length)
  local_ban(ip)

  uri = URI.parse(Paraxial::Helpers.get_honeypot_url)

  body = { api_key: Paraxial::Helpers.get_api_key, bad_ip: ip, ban_length: length }
  r = Net::HTTP.post(uri, body.to_json, @headers)
  if r.code == '200'
    :ok
  else
    :error
  end
end

.local_ban(ip) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 172

def self.local_ban(ip)
  if ip.include?('.')
    # IPv4
    current_t = @bans['v4']
    current_t.add(ip)
    @bans['v4'] = current_t
  else
    # IPv6
    current_t = @bans['v6']
    current_t.add(ip)
    @bans['v6'] = current_t
  end
end

.put(allow_ban) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 107

def self.put(allow_ban)
  allows = allow_ban['allows']
  bans = allow_ban['bans']
  @allows = { 'v4' => create_patricia(allows['v4'], 'v4'), 'v6' => create_patricia(allows['v6'], 'v6') }
  @bans = { 'v4' => create_patricia(bans['v4'], 'v4'), 'v6' => create_patricia(bans['v6'], 'v6') }
  :ok
end

.put_abr(abr) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 73

def self.put_abr(abr)
  # Expected input: a hash
  # {"allows"=>[{"address"=>[96, 56, 162, 210], "netmask"=>32}],
  # "bans"=>
  # [{"address"=>[8193, 3512, 34211, 0, 0, 35374, 880, 29492], "netmask"=>128},
  # {"address"=>[111, 56, 162, 210], "netmask"=>32}],
  # "rules"=>[]}
  ipv4_a = []
  ipv4_b = []
  ipv6_a = []
  ipv6_b = []
  abr.each do |key, value|
    next if key == 'rules' # skip rules for now

    value.each do |ip|
      address = ip['address']
      if address.length == 4
        if key == 'allows'
          ipv4_a << address.join('.')
        elsif key == 'bans'
          ipv4_b << address.join('.')
        end
      elsif key == 'allows'
        ipv6_a << address.map { |n| n.to_s(16).rjust(4, '0') }.join(':')
      elsif key == 'bans'
        ipv6_b << address.map { |n| n.to_s(16).rjust(4, '0') }.join(':')
      end
    end
  end

  ab = { 'allows' => { 'v4' => ipv4_a, 'v6' => ipv6_a }, 'bans' => { 'v4' => ipv4_b, 'v6' => ipv6_b } }
  Paraxial::Checker.put(ab)
end

.req_to_buff(req_hash) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 21

def self.req_to_buff(req_hash)
  @buffer << req_hash
end

.send_async_request(requests) ⇒ Object 



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# File 'lib/paraxial/checker.rb', line 36

def self.send_async_request(requests)
  body =
    {
      http_requests: requests,
      private_api_key: Paraxial::Helpers.get_api_key
    }

  # Do not send HTTP events when free tier is set to true
  ft = Paraxial::FreeTier.is_free_tier
  if ft
    puts "[Paraxial] HTTP ingest not supported on free tier"
  else
    Thread.new do
      uri = URI.parse(Paraxial::Helpers.get_ingest_url)
      Net::HTTP.post(uri, body.to_json, @headers)
    end
  end
end

.whitelist_ip?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/paraxial/checker.rb', line 186

def self.whitelist_ip?(ip)
  if ip.include?('.')
    !@allows['v4'].search_best(ip).nil? # v4 on allow list
  else
    !@allows['v6'].search_best(ip).nil? # v6 on allow list
  end
end