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docuseal/app/controllers/api/active_storage_blobs_proxy_...

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# frozen_string_literal: true
module Api
class ActiveStorageBlobsProxyController < ApiBaseController
include ActiveStorage::Streaming
skip_before_action :authenticate_user!
skip_authorization_check
before_action :set_cors_headers
def show
blob_uuid, purp, exp = ApplicationRecord.signed_id_verifier.verified(params[:signed_uuid])
if blob_uuid.blank? || (purp.present? && purp != 'blob') || (exp && exp < Time.current.to_i)
Rollbar.error('Blob not found') if defined?(Rollbar)
return head :not_found
end
blob = ActiveStorage::Blob.find_by!(uuid: blob_uuid)
if request.headers['Range'].present?
send_blob_byte_range_data blob, request.headers['Range']
else
http_cache_forever public: true do
response.headers['Accept-Ranges'] = 'bytes'
response.headers['Content-Length'] = blob.byte_size.to_s
send_blob_stream blob, disposition: params[:disposition]
end
end
end
end
end