forked from treehouse/mastodon
51 lines
1.2 KiB
Ruby
51 lines
1.2 KiB
Ruby
class XrdController < ApplicationController
|
|
before_action :set_format
|
|
|
|
def host_meta
|
|
@webfinger_template = "#{webfinger_url}?resource={uri}"
|
|
end
|
|
|
|
def webfinger
|
|
@account = Account.find_local!(username_from_resource)
|
|
@canonical_account_uri = "acct:#{@account.username}@#{Rails.configuration.x.local_domain}"
|
|
@magic_key = pem_to_magic_key(@account.keypair.public_key)
|
|
rescue ActiveRecord::RecordNotFound
|
|
head 404
|
|
end
|
|
|
|
private
|
|
|
|
def set_format
|
|
request.format = 'xml'
|
|
response.headers['Content-Type'] = 'application/xrd+xml'
|
|
end
|
|
|
|
def username_from_resource
|
|
if resource_param.start_with?('acct:')
|
|
resource_param.split('@').first.gsub('acct:', '')
|
|
else
|
|
url = Addressable::URI.parse(resource_param)
|
|
url.path.gsub('/users/', '')
|
|
end
|
|
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!
|
|
end
|
|
|
|
(['RSA'] + [modulus, exponent].map { |n| Base64.urlsafe_encode64(n) }).join('.')
|
|
end
|
|
|
|
def resource_param
|
|
params.require(:resource)
|
|
end
|
|
end
|