4 files changed, 24 insertions, 3 deletions
diff --git a/app/javascript/mastodon/service_worker/entry.js b/app/javascript/mastodon/service_worker/entry.js
index eea4cfc3c..ad933b95e 100644
--- a/app/javascript/mastodon/service_worker/entry.js
+++ b/app/javascript/mastodon/service_worker/entry.js
@@ -1,10 +1,30 @@
 import './web_push_notifications';
 
+function fetchRoot() {
+  return fetch('/', { credentials: 'include' });
+}
+
 // Cause a new version of a registered Service Worker to replace an existing one
 // that is already installed, and replace the currently active worker on open pages.
 self.addEventListener('install', function(event) {
-  event.waitUntil(self.skipWaiting());
+  const promises = Promise.all([caches.open('mastodon-web'), fetchRoot()]);
+  const asyncAdd = promises.then(([cache, root]) => cache.put('/', root));
+
+  event.waitUntil(asyncAdd);
 });
 self.addEventListener('activate', function(event) {
   event.waitUntil(self.clients.claim());
 });
+self.addEventListener('fetch', function(event) {
+  const url = new URL(event.request.url);
+
+  if (url.pathname.startsWith('/web/')) {
+    event.respondWith(fetchRoot().then(response => {
+      if (response.ok) {
+        return response;
+      }
+
+      throw null;
+    }).catch(() => caches.match('/')));
+  }
+});
diff --git a/app/javascript/styles/mastodon/accounts.scss b/app/javascript/styles/mastodon/accounts.scss
index 873963c90..dd82ab375 100644
--- a/app/javascript/styles/mastodon/accounts.scss
+++ b/app/javascript/styles/mastodon/accounts.scss
@@ -440,6 +440,7 @@
   text-align: center;
   padding: 60px 0;
   padding-top: 55px;
+  margin: 0 auto;
   cursor: default;
 }
 
diff --git a/app/models/concerns/remotable.rb b/app/models/concerns/remotable.rb
index 020303a2f..69685ec83 100644
--- a/app/models/concerns/remotable.rb
+++ b/app/models/concerns/remotable.rb
@@ -38,7 +38,7 @@ module Remotable
           send("#{attachment_name}_file_name=", basename + extname)
 
           self[attribute_name] = url if has_attribute?(attribute_name)
-        rescue HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError => e
+        rescue HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError => e
           Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
           nil
         end
diff --git a/app/services/backup_service.rb b/app/services/backup_service.rb
index fadc24a82..8492c1117 100644
--- a/app/services/backup_service.rb
+++ b/app/services/backup_service.rb
@@ -49,7 +49,7 @@ class BackupService < BaseService
       end
     end
 
-    archive_filename = ['archive', Time.now.utc.strftime('%Y%m%d%H%M%S'), SecureRandom.hex(2)].join('-') + '.tar.gz'
+    archive_filename = ['archive', Time.now.utc.strftime('%Y%m%d%H%M%S'), SecureRandom.hex(16)].join('-') + '.tar.gz'
 
     @backup.dump      = ActionDispatch::Http::UploadedFile.new(tempfile: tmp_file, filename: archive_filename)
     @backup.processed = true