diff options
Diffstat (limited to 'app/services/verify_link_service.rb')
-rw-r--r-- | app/services/verify_link_service.rb | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/app/services/verify_link_service.rb b/app/services/verify_link_service.rb new file mode 100644 index 000000000..7d53bc255 --- /dev/null +++ b/app/services/verify_link_service.rb @@ -0,0 +1,48 @@ +# frozen_string_literal: true + +class VerifyLinkService < BaseService + def call(field) + @link_back = ActivityPub::TagManager.instance.url_for(field.account) + @url = field.value + + perform_request! + + return unless link_back_present? + + field.mark_verified! + field.account.save! + rescue HTTP::Error, Addressable::URI::InvalidURIError, Mastodon::HostValidationError, Mastodon::LengthValidationError => e + Rails.logger.debug "Error fetching link #{@url}: #{e}" + nil + end + + private + + def perform_request! + @body = Request.new(:get, @url).add_headers('Accept' => 'text/html').perform do |res| + res.code != 200 ? nil : res.body_with_limit + end + end + + def link_back_present? + return false if @body.empty? + + links = Nokogiri::HTML(@body).xpath('//a[contains(concat(" ", normalize-space(@rel), " "), " me ")]|//link[contains(concat(" ", normalize-space(@rel), " "), " me ")]') + + if links.any? { |link| link['href'] == @link_back } + true + elsif links.empty? + false + else + link_redirects_back?(links.first['href']) + end + end + + def link_redirects_back?(test_url) + redirect_to_url = Request.new(:head, test_url, follow: false).perform do |res| + res.headers['Location'] + end + + redirect_to_url == @link_back + end +end |