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71 lines
2.5 KiB
71 lines
2.5 KiB
# frozen_string_literal: true |
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require 'mime/types/columnar' |
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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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GIF_MATRIX_LIMIT = 921_600 # 1280x720px |
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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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before_post_process :set_file_content_type |
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end |
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private |
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def set_file_content_type |
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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.queued_for_write[:original].blank? |
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attachment.instance_write :content_type, calculated_content_type(attachment) |
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end |
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end |
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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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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? || !/image.*/.match?(attachment.content_type) || attachment.queued_for_write[:original].blank? |
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width, height = FastImage.size(attachment.queued_for_write[:original].path) |
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matrix_limit = attachment.content_type == 'image/gif' ? GIF_MATRIX_LIMIT : MAX_MATRIX_LIMIT |
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raise Mastodon::DimensionsValidationError, "#{width}x#{height} images are not supported" if width.present? && height.present? && (width * height > 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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proper_extension = extensions_for_mime_type.first.to_s |
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extension = extensions_for_mime_type.include?(original_extension) ? original_extension : proper_extension |
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extension = 'jpeg' if extension == 'jpe' |
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extension |
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end |
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def calculated_content_type(attachment) |
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content_type = Paperclip.run('file', '-b --mime :file', file: attachment.queued_for_write[:original].path).split(/[:;\s]+/).first.chomp |
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content_type = 'video/mp4' if content_type == 'video/x-m4v' |
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content_type |
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rescue Terrapin::CommandLineError |
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'' |
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end |
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end
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