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56 lines
1.6 KiB
56 lines
1.6 KiB
# frozen_string_literal: true
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module Api
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class ActiveStorageBlobsProxyController < ApiBaseController
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include ActiveStorage::Streaming
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skip_before_action :authenticate_user!
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skip_authorization_check
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before_action :set_cors_headers
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before_action :set_noindex_headers
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def show
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blob_uuid, purp, exp = ApplicationRecord.signed_id_verifier.verified(params[:signed_uuid])
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if blob_uuid.blank? || (purp.present? && purp != 'blob') || (exp && exp < Time.current.to_i)
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Rollbar.error('Blob not found') if defined?(Rollbar)
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return head :not_found
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end
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blob = ActiveStorage::Blob.find_by!(uuid: blob_uuid)
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authorization_check!(blob) if exp.blank?
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if request.headers['Range'].present?
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send_blob_byte_range_data blob, request.headers['Range']
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else
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http_cache_forever public: true do
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response.headers['Accept-Ranges'] = 'bytes'
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response.headers['Content-Length'] = blob.byte_size.to_s
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send_blob_stream blob, disposition: params[:disposition]
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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 authorization_check!(blob)
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is_authorized =
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blob.attachments.all? do |a|
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a.name.in?(%w[logo preview_images]) ||
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(current_user && a.record.account.id == current_user.account_id) ||
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!a.record.account.account_configs.find_or_initialize_by(key: AccountConfig::DOWNLOAD_LINKS_AUTH_KEY).value
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end
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return if is_authorized
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Rollbar.error('Blob aunauthorized') if defined?(Rollbar)
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raise CanCan::AccessDenied
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end
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end
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end
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