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@@ -1,10 +1,15 @@ |
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# frozen_string_literal: true |
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require 'mime/types' |
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module Attachmentable |
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extend ActiveSupport::Concern |
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MAX_MATRIX_LIMIT = 16_777_216 # 4096x4096px or approx. 16MB |
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included do |
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before_post_process :set_file_extensions |
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before_post_process :check_image_dimensions |
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end |
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private |
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@@ -12,10 +17,31 @@ module Attachmentable |
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def set_file_extensions |
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self.class.attachment_definitions.each_key do |attachment_name| |
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attachment = send(attachment_name) |
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next if attachment.blank? |
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extension = Paperclip::Interpolations.content_type_extension(attachment, :original) |
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basename = Paperclip::Interpolations.basename(attachment, :original) |
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attachment.instance_write :file_name, [basename, extension].delete_if(&:blank?).join('.') |
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attachment.instance_write :file_name, [Paperclip::Interpolations.basename(attachment, :original), appropriate_extension(attachment)].delete_if(&:blank?).join('.') |
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end |
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end |
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def check_image_dimensions |
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self.class.attachment_definitions.each_key do |attachment_name| |
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attachment = send(attachment_name) |
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next if attachment.blank? || !attachment.content_type.match?(/image.*/) || attachment.queued_for_write[:original].blank? |
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width, height = FastImage.size(attachment.queued_for_write[:original].path) |
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raise Mastodon::DimensionsValidationError, "#{width}x#{height} images are not supported" if width.present? && height.present? && (width * height >= MAX_MATRIX_LIMIT) |
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end |
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end |
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def appropriate_extension(attachment) |
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mime_type = MIME::Types[attachment.content_type] |
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extensions_for_mime_type = mime_type.empty? ? [] : mime_type.first.extensions |
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original_extension = Paperclip::Interpolations.extension(attachment, :original) |
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extensions_for_mime_type.include?(original_extension) ? original_extension : extensions_for_mime_type.first |
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end |
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end |