Module: ModPorter::Filter

Defined in:
lib/mod_porter.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/mod_porter.rb', line 35

def self.included(base)
  base.superclass_delegating_accessor :mod_porter_secret
  base.before_filter :normalize_mod_porters
  base.extend ModPorter::ClassMethods
end

Instance Method Details

#check_signature!(options) ⇒ Object 



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# File 'lib/mod_porter.rb', line 90

def check_signature!(options)
  expected_digest = Digest::SHA1.digest("#{options[:path]}#{self.class.mod_porter_secret}")
  base64_encoded_digest = ActiveSupport::Base64.encode64(expected_digest).chomp

  if options[:signature] != base64_encoded_digest
    raise ModPorter::InvalidSignature.new("#{options[:signature]} != #{base64_encoded_digest}")
  end
end

#normalize_mod_porters ⇒ Object 



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# File 'lib/mod_porter.rb', line 41

def normalize_mod_porters
  x_uploads_header = request.headers["X-Uploads"] || request.headers["HTTP_X_UPLOADS"]
  return if x_uploads_header.blank?

  porter_params = x_uploads_header.split(",").uniq
  logger.info("Processing #{porter_params.inspect}")

  porter_params.each do |file_param|
    s = StringScanner.new(file_param)

    path = []
    path << s.scan(/\w+/).to_sym

    while !s.eos?
      if arr = s.scan(/\[\]/)
        path << [] # We have an array
      elsif key = s.scan(/\[(\w+)\]/)
        path << s[1].to_sym
      else
        raise ModPorter::UnknownError.new("Something went wrong when scaling the file uploads")
      end
    end

    last = path.pop

    h = path.inject(params) do |hash, value|
      if value.is_a?(Array)
        hash
      else
        hash[value]
      end
    end

    if last.is_a?(Array)
      h.map! do |e|
        check_signature!(e)
        UploadedFile.new(e)
      end
    else
      while h.is_a?(Array)
        h = h.first # WTF. file[][some1], file[][some2]. Maybe this work.
      end

      check_signature!(h[last])
      h[last] = UploadedFile.new(h[last])
    end
  end
end