44 lines
1.1 KiB
Ruby
44 lines
1.1 KiB
Ruby
class BaseUploader < CarrierWave::Uploader::Base
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include CarrierWave::BombShelter # limits size to 4096x4096
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include CarrierWave::MiniMagick # adds processing operations
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FRAME_MAX = 500
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FRAME_STRIP_MAX = 150
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process :validate_frame_count
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process :strip_exif
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def store_dir
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# eg. uploads/user/profile_image/1/e481b7ee.jpg
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"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
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end
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def extension_allowlist
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%w[jpg jpeg jpe gif png ico bmp dng]
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end
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def size_range
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1..25.megabytes
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end
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protected
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# strip EXIF (and GPS) data
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def strip_exif
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manipulate! do |image|
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image.strip unless image.frames.count > FRAME_STRIP_MAX
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image = yield(image) if block_given?
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image
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end
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end
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def validate_frame_count
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begin
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return unless MiniMagick::Image.new(file.path).frames.count > FRAME_MAX
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rescue Timeout::Error
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raise CarrierWave::IntegrityError, "Image processing timed out."
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end
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raise CarrierWave::IntegrityError, "GIF contains too many frames. Max frame count allowed is #{FRAME_MAX}."
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end
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end
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