forked from treehouse/mastodon
78 lines
2.3 KiB
Ruby
78 lines
2.3 KiB
Ruby
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# frozen_string_literal: true
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class Keys::ClaimService < BaseService
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HEADERS = { 'Content-Type' => 'application/activity+json' }.freeze
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class Result < ActiveModelSerializers::Model
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attributes :account, :device_id, :key_id,
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:key, :signature
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def initialize(account, device_id, key_attributes = {})
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@account = account
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@device_id = device_id
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@key_id = key_attributes[:key_id]
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@key = key_attributes[:key]
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@signature = key_attributes[:signature]
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end
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end
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def call(source_account, target_account_id, device_id)
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@source_account = source_account
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@target_account = Account.find(target_account_id)
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@device_id = device_id
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if @target_account.local?
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claim_local_key!
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else
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claim_remote_key!
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end
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rescue ActiveRecord::RecordNotFound
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nil
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end
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private
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def claim_local_key!
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device = @target_account.devices.find_by(device_id: @device_id)
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key = nil
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ApplicationRecord.transaction do
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key = device.one_time_keys.order(Arel.sql('random()')).first!
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key.destroy!
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end
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@result = Result.new(@target_account, @device_id, key)
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end
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def claim_remote_key!
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query_result = QueryService.new.call(@target_account)
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device = query_result.find(@device_id)
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return unless device.present? && device.valid_claim_url?
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json = fetch_resource_with_post(device.claim_url)
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return unless json.present? && json['publicKeyBase64'].present?
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@result = Result.new(@target_account, @device_id, key_id: json['id'], key: json['publicKeyBase64'], signature: json.dig('signature', 'signatureValue'))
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rescue HTTP::Error, OpenSSL::SSL::SSLError, Mastodon::Error => e
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Rails.logger.debug "Claiming one-time key for #{@target_account.acct}:#{@device_id} failed: #{e}"
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nil
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end
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def fetch_resource_with_post(uri)
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build_post_request(uri).perform do |response|
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raise Mastodon::UnexpectedResponseError, response unless response_successful?(response) || response_error_unsalvageable?(response)
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body_to_json(response.body_with_limit) if response.code == 200
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end
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end
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def build_post_request(uri)
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Request.new(:post, uri).tap do |request|
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request.on_behalf_of(@source_account, :uri)
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request.add_headers(HEADERS)
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end
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end
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end
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