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metu.life/app/controllers/xrd_controller.rb

55 lines
1.3 KiB

# frozen_string_literal: true
class XrdController < ApplicationController
before_action :set_default_format_xml, only: :host_meta
def host_meta
@webfinger_template = "#{webfinger_url}?resource={uri}"
respond_to do |format|
format.xml { render content_type: 'application/xrd+xml' }
end
end
def webfinger
@account = Account.find_local!(username_from_resource)
@canonical_account_uri = @account.to_webfinger_s
@magic_key = pem_to_magic_key(@account.keypair.public_key)
respond_to do |format|
format.xml { render content_type: 'application/xrd+xml' }
format.json { render content_type: 'application/jrd+json' }
end
rescue ActiveRecord::RecordNotFound
head 404
end
private
def set_default_format_xml
request.format = 'xml' if request.headers['HTTP_ACCEPT'].nil? && params[:format].nil?
end
def username_from_resource
WebfingerResource.new(resource_param).username
end
def pem_to_magic_key(public_key)
modulus, exponent = [public_key.n, public_key.e].map do |component|
result = []
until component.zero?
result << [component % 256].pack('C')
component >>= 8
end
result.reverse.join
end
(['RSA'] + [modulus, exponent].map { |n| Base64.urlsafe_encode64(n) }).join('.')
end
def resource_param
params.require(:resource)
end
end