Module: Zklib::UserManagement

Included in:
Zklib
Defined in:
lib/zklib/user_management.rb

Instance Method Summary collapse

Instance Method Details

#clear_admins ⇒ Object

Clear admins



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# File 'lib/zklib/user_management.rb', line 4

def clear_admins
  execute_cmd(
    command:        CMD_CLEAR_ADMIN,
    command_string: ''
  ) do |opts|
    return puts "ERROR: #{options[:error]}" unless opts[:valid]

    data = opts[:data]
    if data.length > 7
      data.split("\u0000").pop
    else
      puts 'ERROR: Invalid clear admins response'
    end
  end
end

#clear_users ⇒ Object

Clear users



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# File 'lib/zklib/user_management.rb', line 21

def clear_users
  execute_cmd(
    command:        CMD_CLEAR_DATA,
    command_string: ''
  ) do |opts|
    return puts "ERROR: #{options[:error]}" unless opts[:valid]

    data = opts[:data]
    if data.length > 7
      data.split("\u0000").pop
    else
      puts 'ERROR: Invalid clear users response'
    end
  end
end

#create_user(options) ⇒ Object

Create user param options

|_ uid       UID
|_ user_id   User ID
|_ name      Name
|_ password  Password
|_ role      Role



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# File 'lib/zklib/user_management.rb', line 44

def create_user(options)
  # command_string  = (options[:uid] % 256).chr
  # command_string += (options[:uid] >> 8).chr
  command_string  = options[:uid].chr.ljust(2, 0.chr)
  command_string += options[:role].chr
  command_string += options[:password].ljust(8, 0.chr)
  command_string += options[:name].ljust(28, 0.chr)
  command_string += 1.chr
  command_string += 0.chr * 8
  command_string += options[:user_id].ljust(8, 0.chr)
  command_string += 0.chr * 16

  execute_cmd(
    command:        CMD_SET_USER,
    command_string: command_string
  ) do |opts|
    return puts "ERROR: #{options[:error]}" unless opts[:valid]

    data = opts[:data]
    if data.length > 7
      data.split("\u0000").pop
    else
      puts 'ERROR: Invalid set user response'
    end
  end
end

#decode_user_data(options) ⇒ Object

Decode user data param options

|_ data  User data to decode



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# File 'lib/zklib/user_management.rb', line 74

def decode_user_data(options)
  data = options[:data]

  {
    uid:      BinData::Uint16be.read(data[0..1]).snapshot,
    role:     BinData::Uint16be.read(data[2..3]).snapshot,
    password: data[4..11].split("\0").pop,
    name:     data[12..35].split("\0").pop,
    card_no:  BinData::Uint32le.read(data[36..39]).snapshot,
    user_id:  data[49..71].split("\0").pop
  }
end

#delete_user(options) ⇒ Object

Delete user param options

|_ uid  UID



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# File 'lib/zklib/user_management.rb', line 90

def delete_user(options)
  command_buffer = StringIO.new
  binary_writer  = BinData::Uint16le.new

  binary_writer.value = options[:uid]
  command_buffer.pos  = 0
  binary_writer.write(command_buffer)

  command_string = command_buffer.string

  execute_cmd(
    command:        CMD_DELETE_USER,
    command_string: command_string
  ) do |opts|
    return puts "ERROR: #{options[:error]}" unless opts[:valid]

    data = opts[:data]
    if data.length > 7
      data.split("\u0000").pop
    else
      puts 'ERROR: Invalid clear admins response'
    end
  end
end

#get_user_count ⇒ Object

Get user list size



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# File 'lib/zklib/user_management.rb', line 116

def get_user_count
  return 0 if BinData::Uint16le.read(data_recv).snapshot != CMD_PREPARE_DATA

  BinData::Uint32le.read(data_recv[8..-1]).snapshot
end

#get_users ⇒ Object

Get users



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# File 'lib/zklib/user_management.rb', line 123

def get_users
  header = create_header(
    command:        CMD_USERTEMP_RRQ,
    command_string: 5.chr,
    checksum:       0,
    session_id:     session_id,
    reply_id:       BinData::Uint16le.read(data_recv[6..-1]).snapshot
  )

  # Send command
  socket = UDPSocket.new
  socket.bind('0.0.0.0', inport)
  socket.send(header, 0, ip, port)

  ### START Get response size ###
  self.data_recv = receive_nonblock(socket: socket)[0]

  return puts 'ERROR: Empty response' unless data_recv && data_recv.length > 0

  self.session_id = BinData::Uint16le.read(data_recv[4..-1]).snapshot
  total_bytes     = get_user_count

  # Stop if user list is empty
  if total_bytes <= 0
    socket.close

    return []
  end
  ### END Get response size ###

  ### START Get user list ###
  bytes_recv     = 0
  rem            = nil
  offset         = 0
  user_data_size = 72
  trim_first     = 11
  trim_others    = 8
  users          = []

  while true
    data = receive_nonblock(socket: socket)[0]

    if bytes_recv == 0
      offset     = trim_first
      bytes_recv = 4
    else
      offset = trim_others
    end

    while(data.length - offset >= user_data_size)
      user_data  = data[offset..-1]
      offset    += user_data_size

      if rem && rem.length > 0
        user_data.prepend(rem)
        offset -= rem.length
        rem     = nil
      end

      users << decode_user_data(data: user_data)
      bytes_recv += user_data_size

      if bytes_recv == total_bytes
        socket.close

        return users
      end
    end

    rem = data[offset..-1]
  end
  ### END Get user list ###

  socket.close
end