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https://github.com/mastodon/mastodon
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354fdd317e
Change the behaviour of remotable concern. Previously, it would skip downloading an attachment if the stored remote URL is identical to the new one. Now it would not be skipped if the attachment is not actually currently stored by Paperclip.
86 lines
2.8 KiB
Ruby
86 lines
2.8 KiB
Ruby
# frozen_string_literal: true
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module Remotable
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extend ActiveSupport::Concern
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class_methods do
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def remotable_attachment(attachment_name, limit, suppress_errors: true)
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attribute_name = "#{attachment_name}_remote_url".to_sym
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method_name = "#{attribute_name}=".to_sym
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alt_method_name = "reset_#{attachment_name}!".to_sym
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define_method method_name do |url|
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return if url.blank?
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begin
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parsed_url = Addressable::URI.parse(url).normalize
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rescue Addressable::URI::InvalidURIError
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return
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end
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return if !%w(http https).include?(parsed_url.scheme) || parsed_url.host.blank? || (self[attribute_name] == url && send("#{attachment_name}_file_name").present?)
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begin
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Request.new(:get, url).perform do |response|
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raise Mastodon::UnexpectedResponseError, response unless (200...300).cover?(response.code)
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content_type = parse_content_type(response.headers.get('content-type').last)
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extname = detect_extname_from_content_type(content_type)
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if extname.nil?
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disposition = response.headers.get('content-disposition').last
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matches = disposition&.match(/filename="([^"]*)"/)
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filename = matches.nil? ? parsed_url.path.split('/').last : matches[1]
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extname = filename.nil? ? '' : File.extname(filename)
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end
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basename = SecureRandom.hex(8)
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send("#{attachment_name}=", StringIO.new(response.body_with_limit(limit)))
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send("#{attachment_name}_file_name=", basename + extname)
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self[attribute_name] = url if has_attribute?(attribute_name)
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end
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rescue Mastodon::UnexpectedResponseError, HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError => e
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Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
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raise e unless suppress_errors
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rescue Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError, Mastodon::LengthValidationError, Paperclip::Error, Mastodon::DimensionsValidationError => e
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Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
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nil
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end
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end
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define_method alt_method_name do
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url = self[attribute_name]
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return if url.blank?
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self[attribute_name] = ''
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send(method_name, url)
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end
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end
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end
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private
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def detect_extname_from_content_type(content_type)
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return if content_type.nil?
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type = MIME::Types[content_type].first
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return if type.nil?
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extname = type.extensions.first
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return if extname.nil?
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".#{extname}"
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end
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def parse_content_type(content_type)
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return if content_type.nil?
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content_type.split(/\s*;\s*/).first
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end
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end
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