catstodon/app/lib/provider_discovery.rb
Eugen Rochko 1618b68bfa HTTP signatures (#4146)
* Add Request class with HTTP signature generator

Spec: https://tools.ietf.org/html/draft-cavage-http-signatures-06

* Add HTTP signature verification concern

* Add test for SignatureVerification concern

* Add basic test for Request class

* Make PuSH subscribe/unsubscribe requests use new Request class

Accidentally fix lease_seconds not being set and sent properly, and
change the new minimum subscription duration to 1 day

* Make all PuSH workers use new Request class

* Make Salmon sender use new Request class

* Make FetchLinkService use new Request class

* Make FetchAtomService use the new Request class

* Make Remotable use the new Request class

* Make ResolveRemoteAccountService use the new Request class

* Add more tests

* Allow +-30 seconds window for signed request to remain valid

* Disable time window validation for signed requests, restore 7 days
as PuSH subscription duration (which was previous default due to a bug)
2017-07-14 20:41:49 +02:00

35 lines
1.1 KiB
Ruby

# frozen_string_literal: true
class ProviderDiscovery < OEmbed::ProviderDiscovery
class << self
def discover_provider(url, options = {})
res = Request.new(:get, url).perform
format = options[:format]
raise OEmbed::NotFound, url if res.code != 200 || res.mime_type != 'text/html'
html = Nokogiri::HTML(res.to_s)
if format.nil? || format == :json
provider_endpoint ||= html.at_xpath('//link[@type="application/json+oembed"]')&.attribute('href')&.value
format ||= :json if provider_endpoint
end
if format.nil? || format == :xml
provider_endpoint ||= html.at_xpath('//link[@type="application/xml+oembed"]')&.attribute('href')&.value
format ||= :xml if provider_endpoint
end
raise OEmbed::NotFound, url if provider_endpoint.nil?
begin
provider_endpoint = Addressable::URI.parse(provider_endpoint)
provider_endpoint.query = nil
provider_endpoint = provider_endpoint.to_s
rescue Addressable::URI::InvalidURIError
raise OEmbed::NotFound, url
end
OEmbed::Provider.new(provider_endpoint, format)
end
end
end