Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- app/models/media_attachment.rb

app/lib/activitypub/activity/create.rb

@@ -194,7 +194,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
       next if attachment['url'].blank?
 
       href             = Addressable::URI.parse(attachment['url']).normalize.to_s
-      media_attachment = MediaAttachment.create(account: @account, remote_url: href, description: attachment['name'].presence, focus: attachment['focalPoint'])
+      media_attachment = MediaAttachment.create(account: @account, remote_url: href, description: attachment['name'].presence, focus: attachment['focalPoint'], blurhash: supported_blurhash?(attachment['blurhash']) ? attachment['blurhash'] : nil)
       media_attachments << media_attachment
 
       next if unsupported_media_type?(attachment['mediaType']) || skip_download?
@@ -369,6 +369,11 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
     mime_type.present? && !(MediaAttachment::IMAGE_MIME_TYPES + MediaAttachment::VIDEO_MIME_TYPES).include?(mime_type)
   end
 
+  def supported_blurhash?(blurhash)
+    components = blurhash.blank? ? nil : Blurhash.components(blurhash)
+    components.present? && components.none? { |comp| comp > 5 }
+  end
+
   def skip_download?
     return @skip_download if defined?(@skip_download)
     @skip_download ||= DomainBlock.find_by(domain: @account.domain)&.reject_media?

app/lib/activitypub/adapter.rb

@@ -19,6 +19,7 @@ class ActivityPub::Adapter < ActiveModelSerializers::Adapter::Base
     conversation: { 'ostatus' => 'http://ostatus.org#', 'inReplyToAtomUri' => 'ostatus:inReplyToAtomUri', 'conversation' => 'ostatus:conversation' },
     focal_point: { 'toot' => 'http://joinmastodon.org/ns#', 'focalPoint' => { '@container' => '@list', '@id' => 'toot:focalPoint' } },
     identity_proof: { 'toot' => 'http://joinmastodon.org/ns#', 'IdentityProof' => 'toot:IdentityProof' },
+    blurhash: { 'toot' => 'http://joinmastodon.org/ns#', 'blurhash' => 'toot:blurhash' },
   }.freeze
 
   def self.default_key_transform