Remove parent author signature for relayables from the DB

since it is considered redundant

app/models/message.rb

@@ -21,11 +21,6 @@ class Message < ActiveRecord::Base
                    # inside, which would cause an infinite recursion
     #sign comment as commenter
     self.author_signature = self.sign_with_key(self.author.owner.encryption_key) if self.author.owner
-
-    if self.author.owns?(self.parent)
-      #sign comment as post owner
-      self.parent_author_signature = self.sign_with_key(self.parent.author.owner.encryption_key) if self.parent.author.owner
-    end
     self.save!
     self
   end

db/migrate/20151210213023_remove_signatures_from_relayables.rb

@@ -0,0 +1,9 @@
+class RemoveSignaturesFromRelayables < ActiveRecord::Migration
+  def change
+    remove_column :comments, :parent_author_signature, :text
+    remove_column :poll_participations, :parent_author_signature, :text
+    remove_column :messages, :parent_author_signature, :text
+    remove_column :participations, :parent_author_signature, :text
+    remove_column :likes, :parent_author_signature, :text
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20151003142048) do
+ActiveRecord::Schema.define(version: 20151210213023) do
 
   create_table "account_deletions", force: :cascade do |t|
     t.string   "diaspora_handle", limit: 255
@@ -92,7 +92,6 @@ ActiveRecord::Schema.define(version: 20151003142048) do
     t.integer  "author_id",               limit: 4,                      null: false
     t.string   "guid",                    limit: 255,                    null: false
     t.text     "author_signature",        limit: 65535
-    t.text     "parent_author_signature", limit: 65535
     t.datetime "created_at",                                             null: false
     t.datetime "updated_at",                                             null: false
     t.integer  "likes_count",             limit: 4,     default: 0,      null: false
@@ -168,7 +167,6 @@ ActiveRecord::Schema.define(version: 20151003142048) do
     t.integer  "author_id",               limit: 4
     t.string   "guid",                    limit: 255
     t.text     "author_signature",        limit: 65535
-    t.text     "parent_author_signature", limit: 65535
     t.datetime "created_at",                                           null: false
     t.datetime "updated_at",                                           null: false
     t.string   "target_type",             limit: 60,                   null: false
@@ -205,7 +203,6 @@ ActiveRecord::Schema.define(version: 20151003142048) do
     t.datetime "created_at",                            null: false
     t.datetime "updated_at",                            null: false
     t.text     "author_signature",        limit: 65535
-    t.text     "parent_author_signature", limit: 65535
   end
 
   add_index "messages", ["author_id"], name: "index_messages_on_author_id", using: :btree
@@ -257,7 +254,6 @@ ActiveRecord::Schema.define(version: 20151003142048) do
     t.string   "target_type",             limit: 60,                null: false
     t.integer  "author_id",               limit: 4
     t.text     "author_signature",        limit: 65535
-    t.text     "parent_author_signature", limit: 65535
     t.datetime "created_at",                                        null: false
     t.datetime "updated_at",                                        null: false
     t.integer  "count",                   limit: 4,     default: 1, null: false
@@ -338,7 +334,6 @@ ActiveRecord::Schema.define(version: 20151003142048) do
     t.integer  "poll_id",                 limit: 4,     null: false
     t.string   "guid",                    limit: 255
     t.text     "author_signature",        limit: 65535
-    t.text     "parent_author_signature", limit: 65535
     t.datetime "created_at"
     t.datetime "updated_at"
   end

lib/diaspora/relayable.rb

@@ -8,6 +8,8 @@ module Diaspora
 
     def self.included(model)
       model.class_eval do
+        attr_writer :parent_author_signature
+
         #these fields must be in the schema for a relayable model
         xml_attr :parent_guid
         xml_attr :parent_author_signature
@@ -77,7 +79,7 @@ module Diaspora
 
       # Check to make sure the signature of the comment or like comes from the person claiming to author it
       unless comment_or_like.parent_author == user.person || comment_or_like.verify_parent_author_signature
-        logger.warn "event=receive status=abort reason='object signature not valid' recipient=#{user.diaspora_handle} "\
+        logger.warn "event=receive status=abort reason='sender is not valid' recipient=#{user.diaspora_handle} "\
                     "sender=#{parent.author.diaspora_handle} payload_type=#{self.class} parent_id=#{parent.id}"
         return
       end
@@ -108,11 +110,13 @@ module Diaspora
     def initialize_signatures
       #sign relayable as model creator
       self.author_signature = self.sign_with_key(author.owner.encryption_key)
+    end
 
-      if !self.parent.blank? && self.author.owns?(self.parent)
+    def parent_author_signature
-        #sign relayable as parent object owner
+      unless parent.blank? || parent.author.owner.nil?
-        self.parent_author_signature = sign_with_key(author.owner.encryption_key)
+        @parent_author_signature = sign_with_key(parent.author.owner.encryption_key)
       end
+      @parent_author_signature
     end
 
     # @return [Boolean]

spec/shared_behaviors/relayable.rb

@@ -61,11 +61,6 @@ shared_examples_for "it is relayable" do
         expect(@object_by_parent_author.verify_parent_author_signature).to be true
       end
 
-      it 'does not sign as the parent author is not parent' do
-        @object_by_recipient.author_signature = @object_by_recipient.send(:sign_with_key, @local_leia.encryption_key)
-        expect(@object_by_recipient.verify_parent_author_signature).to be false
-      end
-
       it 'should verify a object made on a remote post by a different contact' do
         @object_by_recipient.author_signature = @object_by_recipient.send(:sign_with_key, @local_leia.encryption_key)
         @object_by_recipient.parent_author_signature = @object_by_recipient.send(:sign_with_key, @local_luke.encryption_key)
@@ -90,12 +85,6 @@ shared_examples_for "it is relayable" do
         }.to_not change { @dup_object_by_parent_author.class.count }
       end
 
-      it 'does not process if post_creator_signature is invalid' do
-        @object_by_parent_author.delete # remove object from db so we set a creator sig
-        @dup_object_by_parent_author.parent_author_signature = "dsfadsfdsa"
-        expect(@dup_object_by_parent_author.receive(@local_leia, @local_luke.person)).to eq(nil)
-      end
-
       it 'signs when the person receiving is the parent author' do
         @object_by_recipient.save
         @object_by_recipient.receive(@local_luke, @local_leia.person)