Module: ScaleDown

Defined in:
lib/scale_down.rb,
lib/scale_down/version.rb,
lib/scale_down/configuration.rb

Defined Under Namespace

Classes: Controller, Dispatcher, FileSizeTooLarge, Image, InvalidGeometry

Constant Summary collapse

VERSION = 
"0.7.2"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.hmac_key ⇒ Object

The shared secret for generating the hmac



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# File 'lib/scale_down/configuration.rb', line 12

def hmac_key
  @hmac_key
end

.hmac_length ⇒ Object

How many characters of the HMAC are used for validation Default 8



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# File 'lib/scale_down/configuration.rb', line 16

def hmac_length
  @hmac_length
end

.hmac_method ⇒ Object

Defines the method to use for generating an HMAC For example

ScaleDown.hmac_method = HMAC::SHA2

Default HMAC::SHA1



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# File 'lib/scale_down/configuration.rb', line 8

def hmac_method
  @hmac_method
end

.labels ⇒ Object

Labels are predefined gemeotries



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# File 'lib/scale_down/configuration.rb', line 35

def labels
  @labels
end

.max_dimensions ⇒ Object

An array of the max width and height an image can be scaled, in pixels.

800,600

would limit scaling operations to 800px wide by 600px tall

Default [1200,1200]



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# File 'lib/scale_down/configuration.rb', line 22

def max_dimensions
  @max_dimensions
end

.max_file_size ⇒ Object

The max file size allowed for the file to be scaled, in bytes Defaults 10 megabytes



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# File 'lib/scale_down/configuration.rb', line 27

def max_file_size
  @max_file_size
end

.public_folder ⇒ Object

The location of the public path for you application Must be set



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# File 'lib/scale_down/configuration.rb', line 32

def public_folder
  @public_folder
end

Class Method Details

.hmac(string) ⇒ Object 



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# File 'lib/scale_down.rb', line 26

def self.hmac(string)
  hmac_method.new(hmac_key).update(string).to_s[0...hmac_length]
end

.logger ⇒ Object 



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# File 'lib/scale_down/configuration.rb', line 47

def logger
  @logger || Logger.new("/dev/null")
end

.logger=(logger) ⇒ Object 



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# File 'lib/scale_down/configuration.rb', line 43

def logger=(logger)
  @logger = logger
end

.valid_hmac?(params) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scale_down.rb', line 21

def self.valid_hmac?(params)
  str = ["/", params[:path], "/", params[:target], "/", params[:filename]].join
  hmac(str) == params[:hmac]
end