Merge tag 'v3.2.1' into instance_only_statuses

app/lib/activitypub/activity.rb

@@ -168,11 +168,13 @@ class ActivityPub::Activity
   end
 
   def signed_fetch_account
+    return Account.find(@options[:delivered_to_account_id]) if @options[:delivered_to_account_id].present?
+
     first_mentioned_local_account || first_local_follower
   end
 
   def first_mentioned_local_account
-    audience = (as_array(@json['to']) + as_array(@json['cc'])).uniq
+    audience = (as_array(@json['to']) + as_array(@json['cc'])).map { |x| value_or_id(x) }.uniq
     local_usernames = audience.select { |uri| ActivityPub::TagManager.instance.local_uri?(uri) }
                               .map { |uri| ActivityPub::TagManager.instance.uri_to_local_id(uri, :username) }
 

app/lib/activitypub/activity/announce.rb

@@ -34,12 +34,20 @@ class ActivityPub::Activity::Announce < ActivityPub::Activity
 
   private
 
+  def audience_to
+    as_array(@json['to']).map { |x| value_or_id(x) }
+  end
+
+  def audience_cc
+    as_array(@json['cc']).map { |x| value_or_id(x) }
+  end
+
   def visibility_from_audience
-    if equals_or_includes?(@json['to'], ActivityPub::TagManager::COLLECTIONS[:public])
+    if audience_to.include?(ActivityPub::TagManager::COLLECTIONS[:public])
       :public
-    elsif equals_or_includes?(@json['cc'], ActivityPub::TagManager::COLLECTIONS[:public])
+    elsif audience_cc.include?(ActivityPub::TagManager::COLLECTIONS[:public])
       :unlisted
-    elsif equals_or_includes?(@json['to'], @account.followers_url)
+    elsif audience_to.include?(@account.followers_url)
       :private
     else
       :direct

app/lib/activitypub/activity/create.rb

@@ -65,11 +65,11 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
   end
 
   def audience_to
-    @object['to'] || @json['to']
+    as_array(@object['to'] || @json['to']).map { |x| value_or_id(x) }
   end
 
   def audience_cc
-    @object['cc'] || @json['cc']
+    as_array(@object['cc'] || @json['cc']).map { |x| value_or_id(x) }
   end
 
   def process_status
@@ -122,7 +122,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
   end
 
   def process_audience
-    (as_array(audience_to) + as_array(audience_cc)).uniq.each do |audience|
+    (audience_to + audience_cc).uniq.each do |audience|
       next if audience == ActivityPub::TagManager::COLLECTIONS[:public]
 
       # Unlike with tags, there is no point in resolving accounts we don't already
@@ -352,11 +352,11 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
   end
 
   def visibility_from_audience
-    if equals_or_includes?(audience_to, ActivityPub::TagManager::COLLECTIONS[:public])
+    if audience_to.include?(ActivityPub::TagManager::COLLECTIONS[:public])
       :public
-    elsif equals_or_includes?(audience_cc, ActivityPub::TagManager::COLLECTIONS[:public])
+    elsif audience_cc.include?(ActivityPub::TagManager::COLLECTIONS[:public])
       :unlisted
-    elsif equals_or_includes?(audience_to, @account.followers_url)
+    elsif audience_to.include?(@account.followers_url)
       :private
     else
       :direct
@@ -365,7 +365,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
 
   def audience_includes?(account)
     uri = ActivityPub::TagManager.instance.uri_for(account)
-    equals_or_includes?(audience_to, uri) || equals_or_includes?(audience_cc, uri)
+    audience_to.include?(uri) || audience_cc.include?(uri)
   end
 
   def replied_to_status
@@ -477,7 +477,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
   def addresses_local_accounts?
     return true if @options[:delivered_to_account_id]
 
-    local_usernames = (as_array(audience_to) + as_array(audience_cc)).uniq.select { |uri| ActivityPub::TagManager.instance.local_uri?(uri) }.map { |uri| ActivityPub::TagManager.instance.uri_to_local_id(uri, :username) }
+    local_usernames = (audience_to + audience_cc).uniq.select { |uri| ActivityPub::TagManager.instance.local_uri?(uri) }.map { |uri| ActivityPub::TagManager.instance.uri_to_local_id(uri, :username) }
 
     return false if local_usernames.empty?
 

app/lib/activitypub/activity/reject.rb

@@ -4,7 +4,7 @@ class ActivityPub::Activity::Reject < ActivityPub::Activity
   def perform
     return reject_follow_for_relay if relay_follow?
     return follow_request_from_object.reject! unless follow_request_from_object.nil?
-    return UnfollowService.new.call(follow_from_object.target_account, @account) unless follow_from_object.nil?
+    return UnfollowService.new.call(follow_from_object.account, @account) unless follow_from_object.nil?
 
     case @object['type']
     when 'Follow'

app/lib/webfinger.rb

@@ -0,0 +1,93 @@
+# frozen_string_literal: true
+
+class Webfinger
+  class Error < StandardError; end
+
+  class Response
+    def initialize(body)
+      @json = Oj.load(body, mode: :strict)
+    end
+
+    def subject
+      @json['subject']
+    end
+
+    def link(rel, attribute)
+      links.dig(rel, attribute)
+    end
+
+    private
+
+    def links
+      @links ||= @json['links'].map { |link| [link['rel'], link] }.to_h
+    end
+  end
+
+  def initialize(uri)
+    _, @domain = uri.split('@')
+
+    raise ArgumentError, 'Webfinger requested for local account' if @domain.nil?
+
+    @uri = uri
+  end
+
+  def perform
+    Response.new(body_from_webfinger)
+  rescue Oj::ParseError
+    raise Webfinger::Error, "Invalid JSON in response for #{@uri}"
+  rescue Addressable::URI::InvalidURIError
+    raise Webfinger::Error, "Invalid URI for #{@uri}"
+  end
+
+  private
+
+  def body_from_webfinger(url = standard_url, use_fallback = true)
+    webfinger_request(url).perform do |res|
+      if res.code == 200
+        res.body_with_limit
+      elsif res.code == 404 && use_fallback
+        body_from_host_meta
+      else
+        raise Webfinger::Error, "Request for #{@uri} returned HTTP #{res.code}"
+      end
+    end
+  end
+
+  def body_from_host_meta
+    host_meta_request.perform do |res|
+      if res.code == 200
+        body_from_webfinger(url_from_template(res.body_with_limit), false)
+      else
+        raise Webfinger::Error, "Request for #{@uri} returned HTTP #{res.code}"
+      end
+    end
+  end
+
+  def url_from_template(str)
+    link = Nokogiri::XML(str).at_xpath('//xmlns:Link[@rel="lrdd"]')
+
+    if link.present?
+      link['template'].gsub('{uri}', @uri)
+    else
+      raise Webfinger::Error, "Request for #{@uri} returned host-meta without link to Webfinger"
+    end
+  rescue Nokogiri::XML::XPath::SyntaxError
+    raise Webfinger::Error, "Invalid XML encountered in host-meta for #{@uri}"
+  end
+
+  def host_meta_request
+    Request.new(:get, host_meta_url).add_headers('Accept' => 'application/xrd+xml, application/xml, text/xml')
+  end
+
+  def webfinger_request(url)
+    Request.new(:get, url).add_headers('Accept' => 'application/jrd+json, application/json')
+  end
+
+  def standard_url
+    "https://#{@domain}/.well-known/webfinger?resource=#{@uri}"
+  end
+
+  def host_meta_url
+    "https://#{@domain}/.well-known/host-meta"
+  end
+end