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mastodon/app/models/concerns/remotable.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

50 lines
1.6 KiB
Ruby

# frozen_string_literal: true
module Remotable
extend ActiveSupport::Concern
included do
attachment_definitions.each_key do |attachment_name|
attribute_name = "#{attachment_name}_remote_url".to_sym
method_name = "#{attribute_name}=".to_sym
alt_method_name = "reset_#{attachment_name}!".to_sym
define_method method_name do |url|
begin
parsed_url = Addressable::URI.parse(url).normalize
rescue Addressable::URI::InvalidURIError
return
end
return if !%w(http https).include?(parsed_url.scheme) || parsed_url.host.empty? || self[attribute_name] == url
begin
response = Request.new(:get, url).perform
return if response.code != 200
matches = response.headers['content-disposition']&.match(/filename="([^"]*)"/)
filename = matches.nil? ? parsed_url.path.split('/').last : matches[1]
send("#{attachment_name}=", StringIO.new(response.to_s))
send("#{attachment_name}_file_name=", filename)
self[attribute_name] = url if has_attribute?(attribute_name)
rescue HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError => e
Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
nil
end
end
define_method alt_method_name do
url = self[attribute_name]
return if url.blank?
self[attribute_name] = ''
send(method_name, url)
end
end
end
end