61 lines
1.6 KiB
Ruby
61 lines
1.6 KiB
Ruby
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class FollowRemoteUserService
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include GrapeRouteHelpers::NamedRouteMatcher
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def call(user)
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username, domain = user.split('@')
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account = Account.where(username: username, domain: domain).first
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return account unless account.nil?
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account = Account.new(username: username, domain: domain)
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data = Goldfinger.finger("acct:#{user}")
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account.remote_url = data.link('http://schemas.google.com/g/2010#updates-from').href
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account.salmon_url = data.link('salmon').href
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account.public_key = magic_key_to_pem(data.link('magic-public-key').href)
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account.private_key = nil
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account.secret = SecureRandom.hex
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account.verify_token = SecureRandom.hex
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feed = get_feed(account.remote_url)
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hubs = feed.xpath('//xmlns:link[@rel="hub"]')
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return false if hubs.empty? || hubs.first.attribute('href').nil?
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account.hub_url = hubs.first.attribute('href').value
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account.save!
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subscription = account.subscription(subscription_url(account))
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subscription.subscribe
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rescue Goldfinger::Error, HTTP::Error => e
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false
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end
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private
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def get_feed(url)
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response = http_client.get(Addressable::URI.parse(url))
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Nokogiri::XML(response)
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end
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def magic_key_to_pem(magic_key)
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_, modulus, exponent = magic_key.split('.')
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modulus, exponent = [modulus, exponent].map { |n| Base64.urlsafe_decode64(n).bytes.inject(0) { |num, byte| (num << 8) | byte } }
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key = OpenSSL::PKey::RSA.new
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key.n = modulus
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key.d = exponent
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key.to_pem
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end
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def http_client
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HTTP
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end
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def subscription_url(account)
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"https://649841dc.ngrok.io/api#{subscriptions_path(id: account.id)}"
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end
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end
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