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# -*- coding:binary -*-
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require 'spec_helper'
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RSpec.describe Rex::Proto::ACPP::Message do
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  subject(:message) do
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    described_class.new
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  end
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  # retrieve_public.bin has the contents of a message type 20 (retrieve
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  # settings) message with a password of public.  There is no payload.
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  let(:retrieve_public_bin) do
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    File.binread(File.join(File.dirname(__FILE__), 'retrieve_public.bin'))
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  end
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  let(:retrieve_public_message) do
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    message.password = 'public'
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    message.type = 20
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    message
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  end
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  describe '#==' do
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    it 'considers two different objects composed of equal parts equal' do
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      message2 = described_class.new
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      message2.password = 'public'
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      message2.type = 20
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      expect(message2).to eq(retrieve_public_message)
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    end
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    it 'considers two different objects composed of different parts unequal' do
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      message3 = described_class.new
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      message3.type = 1
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      message3.password = 'private'
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      expect(message3).not_to eq(retrieve_public_message)
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    end
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  end
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  describe '#to_s' do
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    it 'encodes properly' do
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      expect(retrieve_public_bin).to eq(retrieve_public_message.to_s)
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    end
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  end
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  describe '#decode' do
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    it 'fails to decode if the message is the wrong size' do
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      small = Rex::Text.rand_text_alpha(100)
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      large = Rex::Text.rand_text_alpha(200)
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      expect { described_class.decode(small) }.to raise_error(/size #{small.size}/i)
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      expect { described_class.decode(large) }.to raise_error(/size #{large.size}/i)
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    end
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    it 'fails to decode if the required header is incorrect' do
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      retrieve_public_bin[0,4] = 'blah'
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      expect { described_class.decode(retrieve_public_bin) }.to raise_error(/header/i)
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    end
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    it 'decodes properly when the required checksum is correct' do
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      expect(retrieve_public_message).to eq(described_class.decode(retrieve_public_bin))
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      expect(retrieve_public_message).to eq(described_class.decode(retrieve_public_bin, true))
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    end
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    it 'decodes properly when the non-required checksum is correct' do
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      expect(retrieve_public_message).to eq(described_class.decode(retrieve_public_bin, false))
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    end
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    it 'decodes properly when the message checksum is incorrect' do
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      retrieve_public_bin[7,4] = "\x01\x02\x03\x04"
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      expect { described_class.decode(retrieve_public_bin) }.to raise_error(/message checksum/i)
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      expect { described_class.decode(retrieve_public_bin, true) }.to raise_error(/message checksum/i)
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      expect(retrieve_public_message).to eq(described_class.decode(retrieve_public_bin, false))
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    end
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  end
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  describe '#successful?' do
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    it 'is successful when 0' do
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      message = described_class.new
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      message.status = 0
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      expect(message.successful?).to be true
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    end
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    it 'is successful when !0' do
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      message = described_class.new
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      message.status = 1
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      expect(message.successful?).to be false
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    end
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  end
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end
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