mirror of
https://github.com/kikobar/mastodon.git
synced 2024-12-27 08:14:25 +00:00
0e1b0f2747
The whole point of verified_webfinger? is to check the WebFinger-discoverable URI maps back to the known author URI. This was not actually verified if the first Webfinger request was not a redirection.
60 lines
1.7 KiB
Ruby
60 lines
1.7 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class ActivityPub::FetchRemoteAccountService < BaseService
|
|
include JsonLdHelper
|
|
|
|
# Should be called when uri has already been checked for locality
|
|
# Does a WebFinger roundtrip on each call
|
|
def call(uri, id: true, prefetched_body: nil)
|
|
@json = if prefetched_body.nil?
|
|
fetch_resource(uri, id)
|
|
else
|
|
body_to_json(prefetched_body)
|
|
end
|
|
|
|
return unless supported_context? && expected_type?
|
|
|
|
@uri = @json['id']
|
|
@username = @json['preferredUsername']
|
|
@domain = Addressable::URI.parse(@uri).normalized_host
|
|
|
|
return unless verified_webfinger?
|
|
|
|
ActivityPub::ProcessAccountService.new.call(@username, @domain, @json)
|
|
rescue Oj::ParseError
|
|
nil
|
|
end
|
|
|
|
private
|
|
|
|
def verified_webfinger?
|
|
webfinger = Goldfinger.finger("acct:#{@username}@#{@domain}")
|
|
confirmed_username, confirmed_domain = split_acct(webfinger.subject)
|
|
|
|
return webfinger.link('self')&.href == @uri if @username.casecmp(confirmed_username).zero? && @domain.casecmp(confirmed_domain).zero?
|
|
|
|
webfinger = Goldfinger.finger("acct:#{confirmed_username}@#{confirmed_domain}")
|
|
@username, @domain = split_acct(webfinger.subject)
|
|
self_reference = webfinger.link('self')
|
|
|
|
return false unless @username.casecmp(confirmed_username).zero? && @domain.casecmp(confirmed_domain).zero?
|
|
return false if self_reference&.href != @uri
|
|
|
|
true
|
|
rescue Goldfinger::Error
|
|
false
|
|
end
|
|
|
|
def split_acct(acct)
|
|
acct.gsub(/\Aacct:/, '').split('@')
|
|
end
|
|
|
|
def supported_context?
|
|
super(@json)
|
|
end
|
|
|
|
def expected_type?
|
|
@json['type'] == 'Person'
|
|
end
|
|
end
|