Add initial support for ingesting and verifying remote quote posts (#34370)

app/lib/activitypub/activity/create.rb

@@ -45,9 +45,12 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
     @unresolved_mentions  = []
     @silenced_account_ids = []
     @params               = {}
+    @quote                = nil
+    @quote_uri            = nil
 
     process_status_params
     process_tags
+    process_quote
     process_audience
 
     ApplicationRecord.transaction do
@@ -55,6 +58,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
       attach_tags(@status)
       attach_mentions(@status)
       attach_counts(@status)
+      attach_quote(@status)
     end
 
     resolve_thread(@status)
@@ -189,6 +193,16 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
     end
   end
 
+  def attach_quote(status)
+    return if @quote.nil?
+
+    @quote.status = status
+    @quote.save
+    ActivityPub::VerifyQuoteService.new.call(@quote, fetchable_quoted_uri: @quote_uri, request_id: @options[:request_id])
+  rescue Mastodon::UnexpectedResponseError, *Mastodon::HTTP_CONNECTION_ERRORS
+    ActivityPub::RefetchAndVerifyQuoteWorker.perform_in(rand(30..600).seconds, @quote.id, @quote_uri, { 'request_id' => @options[:request_id] })
+  end
+
   def process_tags
     return if @object['tag'].nil?
 
@@ -203,6 +217,17 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
     end
   end
 
+  def process_quote
+    return unless Mastodon::Feature.inbound_quotes_enabled?
+
+    @quote_uri = @status_parser.quote_uri
+    return if @quote_uri.blank?
+
+    approval_uri = @status_parser.quote_approval_uri
+    approval_uri = nil if unsupported_uri_scheme?(approval_uri)
+    @quote = Quote.new(account: @account, approval_uri: approval_uri)
+  end
+
   def process_hashtag(tag)
     return if tag['name'].blank?