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-rw-r--r--activestorage/app/controllers/active_storage/disk_controller.rb51
1 files changed, 51 insertions, 0 deletions
diff --git a/activestorage/app/controllers/active_storage/disk_controller.rb b/activestorage/app/controllers/active_storage/disk_controller.rb
new file mode 100644
index 0000000000..76377a0f20
--- /dev/null
+++ b/activestorage/app/controllers/active_storage/disk_controller.rb
@@ -0,0 +1,51 @@
+# Serves files stored with the disk service in the same way that the cloud services do.
+# This means using expiring, signed URLs that are meant for immediate access, not permanent linking.
+# Always go through the BlobsController, or your own authenticated controller, rather than directly
+# to the service url.
+class ActiveStorage::DiskController < ActionController::Base
+ def show
+ if key = decode_verified_key
+ send_data disk_service.download(key),
+ filename: params[:filename], disposition: disposition_param, content_type: params[:content_type]
+ else
+ head :not_found
+ end
+ end
+
+ def update
+ if token = decode_verified_token
+ if acceptable_content?(token)
+ disk_service.upload token[:key], request.body, checksum: token[:checksum]
+ else
+ head :unprocessable_entity
+ end
+ else
+ head :not_found
+ end
+ rescue ActiveStorage::IntegrityError
+ head :unprocessable_entity
+ end
+
+ private
+ def disk_service
+ ActiveStorage::Blob.service
+ end
+
+
+ def decode_verified_key
+ ActiveStorage.verifier.verified(params[:encoded_key], purpose: :blob_key)
+ end
+
+ def disposition_param
+ params[:disposition].presence_in(%w( inline attachment )) || "inline"
+ end
+
+
+ def decode_verified_token
+ ActiveStorage.verifier.verified(params[:encoded_token], purpose: :blob_token)
+ end
+
+ def acceptable_content?(token)
+ token[:content_type] == request.content_type && token[:content_length] == request.content_length
+ end
+end