disable file download in Merritt UI

app/controllers/file_controller.rb

@@ -17,15 +17,10 @@ class FileController < ApplicationController
   before_action :check_version, only: %i[download presign]
 
   def download
-    if @file.exceeds_download_size?
-      render file: "#{Rails.root}/public/403.html", status: 403, layout: false
-    else
-      stream_response(@file.bytestream_uri,
-                      'inline',
-                      File.basename(@file.pathname),
-                      @file.mime_type,
-                      @file.full_size)
-    end
+    # deprecate file download in favor of presigned retrieval
+    url = request.url.gsub(%r[/d/], "/api/presign-file/")
+    response.headers['Location'] = url
+    render status: 308, plain: ''
   end
 
   # API Call to redirect to presign URL for a file.
@@ -149,14 +144,16 @@ def storage_key_do
   def fix_filename
     # determine if the filename has already been decoded (by looking for the slash after producer or system)
     fname = params[:file]
-    return fname if fname.match(/(producer|system)\//) 
+    return fname if fname.match(%r{(producer|system)/})
 
     # retrieve decoded version of the parameter
     fname = params_u(:file)
     return fname if fname.valid_encoding?
 
+    # :nocov:
     log.warn("invalid encoding for filname #{fname}")
     fname
+    # :nocov:
   end
 
   def fix_params

app/models/inv_file.rb

@@ -35,6 +35,8 @@ def external_bytestream_uri
   end
 
   def exceeds_download_size?
+    # :nocov:
     full_size > APP_CONFIG['max_download_size']
+    # :nocov:
   end
 end

spec/controllers/file_controller_spec.rb

@@ -63,102 +63,15 @@
       expect(response.status).to eq(401)
     end
 
-    it 'prevents download when download size exceeded' do
+    it 'download file deprecated' do
       mock_permissions_all(user_id, collection_id)
-
-      size_too_large = 1 + APP_CONFIG['max_download_size']
-      inv_file.full_size = size_too_large
-      inv_file.save!
-
       request.session.merge!({ uid: user_id })
       get(:download, params: params)
-      expect(response.status).to eq(403)
-    end
-
-    it 'streams the file' do
-      mock_permissions_all(user_id, collection_id)
-
-      size_ok = APP_CONFIG['max_download_size'] - 1
-      inv_file.full_size = size_ok
-      inv_file.save!
-
-      streamer = double(Streamer)
-      expected_url = inv_file.bytestream_uri
-      allow(Streamer).to receive(:new).with(expected_url).and_return(streamer)
-
-      request.session.merge!({ uid: user_id })
-      get(:download, params: params)
-
-      expect(response.status).to eq(200)
-
-      expected_headers = {
-        'Content-Type' => inv_file.mime_type,
-        'Content-Disposition' => "inline; filename=\"#{basename}\"",
-        'Content-Length' => inv_file.full_size.to_s
-      }
-      response_headers = response.headers
-      expected_headers.each do |header, value|
-        expect(response_headers[header]).to eq(value)
-      end
-    end
-
-    it 'handles filenames with spaces' do
-      pathname = 'producer/Caltrans EHE Tests.pdf'
-      mock_permissions_all(user_id, collection_id)
-
-      size_ok = APP_CONFIG['max_download_size'] - 1
-      inv_file.full_size = size_ok
-      inv_file.pathname = pathname
-      inv_file.save!
-
-      streamer = double(Streamer)
-      expected_url = inv_file.bytestream_uri
-      allow(Streamer).to receive(:new).with(expected_url).and_return(streamer)
-
-      params[:file] = pathname
-      request.session.merge!({ uid: user_id })
-      get(:download, params: params)
-      expect(response.status).to eq(200)
-    end
-
-    # Note that percent signs in filenames will generate invalid download links
-    skip it 'handles filenames with percent sign' do
-      pathname = 'producer/Test %25BF.pdf'
-      mock_permissions_all(user_id, collection_id)
-
-      size_ok = APP_CONFIG['max_download_size'] - 1
-      inv_file.full_size = size_ok
-      inv_file.pathname = pathname
-      inv_file.save!
-
-      streamer = double(Streamer)
-      expected_url = inv_file.bytestream_uri
-      allow(Streamer).to receive(:new).with(expected_url).and_return(streamer)
-
-      params[:file] = pathname
-      request.session.merge!({ uid: user_id })
-      get(:download, params: params)
-      expect(response.status).to eq(200)
+      expect(response.status).to eq(308)
+      expect(response.body).to eq('')
+      expect(response.headers).to have_key('Location')
     end
 
-    it 'handles filenames with spaces and pipes' do
-      pathname = 'producer/AIP/Subseries 1.1/Objects/Evolution book/Tate Collection |landscape2'
-      mock_permissions_all(user_id, collection_id)
-
-      size_ok = APP_CONFIG['max_download_size'] - 1
-      inv_file.full_size = size_ok
-      inv_file.pathname = pathname
-      inv_file.save!
-
-      streamer = double(Streamer)
-      expected_url = inv_file.bytestream_uri
-      allow(Streamer).to receive(:new).with(expected_url).and_return(streamer)
-
-      params[:file] = pathname
-      request.session.merge!({ uid: user_id })
-      get(:download, params: params)
-      expect(response.status).to eq(200)
-    end
   end
 
   describe ':presign' do