108 lines
3.3 KiB
Ruby
108 lines
3.3 KiB
Ruby
# Copyright (c) 2010, Diaspora Inc. This file is
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# licensed under the Affero General Public License version 3 or later. See
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# the COPYRIGHT file.
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class RelayableRetraction
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include ROXML
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include Diaspora::Webhooks
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include Diaspora::Encryptable
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xml_name :relayable_retraction
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xml_attr :target_guid
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xml_attr :target_type
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xml_attr :sender_handle
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xml_attr :parent_author_signature
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xml_attr :target_author_signature
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attr_accessor :target_guid,
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:target_type,
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:parent_author_signature,
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:target_author_signature,
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:sender
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def signable_accessors
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accessors = self.class.roxml_attrs.collect do |definition|
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definition.accessor
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end
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['target_author_signature', 'parent_author_signature'].each do |acc|
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accessors.delete acc
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end
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accessors
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end
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def sender_handle= new_sender_handle
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@sender = Person.where(:diaspora_handle => new_sender_handle).first
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end
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def sender_handle
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@sender.diaspora_handle
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end
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def diaspora_handle
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self.sender_handle
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end
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def subscribers(user)
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self.target.subscribers(user)
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end
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def self.build(sender, target)
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retraction = self.new
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retraction.sender = sender
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retraction.target = target
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retraction.target_author_signature = retraction.sign_with_key(sender.encryption_key) if sender.person == target.author
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retraction.parent_author_signature = retraction.sign_with_key(sender.encryption_key) if sender.person == target.parent.author
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retraction
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end
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def target
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@target ||= self.target_type.constantize.where(:guid => target_guid).first
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end
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def guid
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target_guid
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end
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def target= new_target
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@target = new_target
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@target_type = new_target.class.to_s
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@target_guid = new_target.guid
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end
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def parent
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self.target.parent
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end
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def perform receiving_user
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Rails.logger.debug "Performing retraction for #{target_guid}"
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self.target.unsocket_from_user receiving_user if target.respond_to? :unsocket_from_user
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self.target.destroy
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Rails.logger.info(:event => :retraction, :status => :complete, :target_type => self.target_type, :guid => self.target_guid)
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end
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def receive(recipient, sender)
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if self.target.nil?
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Rails.logger.info("event=retraction status=abort reason='no post found' sender=#{sender.diaspora_handle} target_guid=#{target_guid}")
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return
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elsif self.parent.author == recipient.person && self.target_author_signature_valid?
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#this is a retraction from the downstream object creator, and the recipient is the upstream owner
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self.parent_author_signature = self.sign_with_key(recipient.encryption_key)
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Postzord::Dispatch.new(recipient, self).post
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self.perform(recipient)
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elsif self.parent_author_signature_valid?
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#this is a retraction from the upstream owner
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self.perform(recipient)
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else
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Rails.logger.info("event=receive status=abort reason='object signature not valid' recipient=#{recipient.diaspora_handle} sender=#{self.parent.author.diaspora_handle} payload_type=#{self.class} parent_id=#{self.parent.id}")
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return
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end
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self
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end
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def parent_author_signature_valid?
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verify_signature(self.parent_author_signature, self.parent.author)
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end
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def target_author_signature_valid?
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verify_signature(self.target_author_signature, self.target.author)
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end
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end
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