Class: InstanceAgent::CodeDeployPlugin::ApplicationSpecification::AceInfo

Inherits:
Object
  • Object
show all
Defined in:
lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb

Overview

Helper Class for storing an ace

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ace, internal = false) ⇒ AceInfo

Returns a new instance of AceInfo.



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 10

def initialize(ace, internal=false)
  @default = false
  @type = nil
  @name = ""
  parts = ace.split(":", -1).reverse
  if (parts.length < 2) || (parts.length > 4)
    raise AppSpecValidationException, "invalid acl entry #{ace}"
  end

  if (parts.length == 4)
    if !(parts[3].eql?("d") || (parts[3].eql?("default")))
      raise AppSpecValidationException, "invalid acl entry #{ace}"
    end
    @default = true
  end

  if parts.length >= 3
    if parts[2].eql?("d") || (parts[2].eql?("default"))
      if @default
        raise AppSpecValidationException, "invalid acl entry #{ace}"
      end
      @default = true
    elsif parts[2].eql?("m") || parts[2].eql?("mask")
      @type = "mask"
    elsif parts[2].eql?("o") || parts[2].eql?("other")
      @type = "other"
    elsif parts[2].eql?("g") || parts[2].eql?("group")
      @type = "group"
    elsif parts[2].eql?("u") || parts[2].eql?("user")
      @type = "user"
    else
      raise AppSpecValidationException, "invalid acl entry #{ace}"
    end
  end

  if  parts[1].eql?("m") || parts[1].eql?("mask")
    if @type.nil?
      @type = "mask"
    else
      @name = "mask"
    end
  elsif parts[1].eql?("o") || parts[1].eql?("other")
    if @type.nil?
      @type = "other"
    else
      @name = "other"
    end
  else
    if @type.nil?
      @type = "user"
    end
    @name = parts[1]
  end

  if (@type.eql?("mask") || @type.eql?("other")) && !@name.empty?
    raise AppSpecValidationException, "invalid acl entry #{ace}"
  end
  if (!internal && !@default && !@type.eql?("mask") && @name.empty?)
    raise AppSpecValidationException, "use mode to set the base acl entry #{ace}"
  end

  perm_chars = parts[0].chars.entries
  if (perm_chars.length == 1) && (perm_chars[0].ord >= "0".ord) && (perm_chars[0].ord <= "7".ord)
    perm_bits = to_bits(perm_chars[0].to_i, 3)
    @read = (perm_bits[0] == 1)
    @write = (perm_bits[1] == 1)
    @execute = (perm_bits[2] == 1)
  else
    @read = false
    @write = false
    @execute = false
    perm_chars.each do |perm|
      case perm
      when 'r'
        @read = true
      when 'w'
        @write = true
      when 'x'
        @execute = true
      when '-'
      else
        raise AppSpecValidationException, "unrecognized permission character #{perm} in #{ace}"
      end
    end
  end
end

Instance Attribute Details

#default ⇒ Object (readonly)

Returns the value of attribute default.



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 8

def default
  @default
end

#execute ⇒ Object (readonly)

Returns the value of attribute execute.



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 8

def execute
  @execute
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 8

def name
  @name
end

#read ⇒ Object (readonly)

Returns the value of attribute read.



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 8

def read
  @read
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 8

def type
  @type
end

#write ⇒ Object (readonly)

Returns the value of attribute write.



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 8

def write
  @write
end

Instance Method Details

#get_ace ⇒ Object

format [default:]:[name]:(r|-)(w|-)(x|-)



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 98

def get_ace
  result = "";
  if @default
    result = "default:"
  end
  result = result + type + ":" + name + ":"
  if (@read)
    result = result + "r"
  else
    result = result + "-"
  end
  if (@write)
    result = result + "w"
  else
    result = result + "-"
  end
  if (@execute)
    result = result + "x"
  else
    result = result + "-"
  end
  result
end

#to_bits(num, min_size) ⇒ Object 



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# File 'lib/instance_agent/codedeploy_plugin/application_specification/ace_info.rb', line 122

def to_bits(num, min_size)
  bits = Array.new(min_size, 0)
  num_bits = num.to_s(2).split("")
  diff = [0, min_size - num_bits.length].max
  num_bits.map.with_index {|n,i| bits[i+diff] = n.to_i}
  bits
end