From f90daf58dbc09a492b65a281d2cf5b5c4f5055b6 Mon Sep 17 00:00:00 2001 From: Claire Date: Thu, 16 Mar 2023 22:47:01 +0100 Subject: [PATCH] Add warning for object storage misconfiguration (#24137) --- app/lib/admin/system_check.rb | 1 + .../admin/system_check/media_privacy_check.rb | 105 ++++++++++++++++++ app/lib/admin/system_check/message.rb | 11 +- app/views/admin/dashboard/index.html.haml | 2 +- config/locales/en.yml | 6 + 5 files changed, 119 insertions(+), 6 deletions(-) create mode 100644 app/lib/admin/system_check/media_privacy_check.rb diff --git a/app/lib/admin/system_check.rb b/app/lib/admin/system_check.rb index 877a42ef6..c4cca0406 100644 --- a/app/lib/admin/system_check.rb +++ b/app/lib/admin/system_check.rb @@ -2,6 +2,7 @@ class Admin::SystemCheck ACTIVE_CHECKS = [ + Admin::SystemCheck::MediaPrivacyCheck, Admin::SystemCheck::DatabaseSchemaCheck, Admin::SystemCheck::SidekiqProcessCheck, Admin::SystemCheck::RulesCheck, diff --git a/app/lib/admin/system_check/media_privacy_check.rb b/app/lib/admin/system_check/media_privacy_check.rb new file mode 100644 index 000000000..1df05b120 --- /dev/null +++ b/app/lib/admin/system_check/media_privacy_check.rb @@ -0,0 +1,105 @@ +# frozen_string_literal: true + +class Admin::SystemCheck::MediaPrivacyCheck < Admin::SystemCheck::BaseCheck + include RoutingHelper + + def skip? + !current_user.can?(:view_devops) + end + + def pass? + check_media_uploads! + @failure_message.nil? + end + + def message + Admin::SystemCheck::Message.new(@failure_message, @failure_value, @failure_action, true) + end + + private + + def check_media_uploads! + if Rails.configuration.x.use_s3 + check_media_listing_inaccessible_s3! + else + check_media_listing_inaccessible! + end + end + + def check_media_listing_inaccessible! + full_url = full_asset_url(media_attachment.file.url(:original, false)) + + # Check if we can list the uploaded file. If true, that's an error + directory_url = Addressable::URI.parse(full_url) + directory_url.query = nil + filename = directory_url.path.gsub(%r{.*/}, '') + directory_url.path = directory_url.path.gsub(%r{/[^/]+\Z}, '/') + Request.new(:get, directory_url, allow_local: true).perform do |res| + if res.truncated_body&.include?(filename) + @failure_message = use_storage? ? :upload_check_privacy_error_object_storage : :upload_check_privacy_error + @failure_action = 'https://docs.joinmastodon.org/admin/optional/object-storage/#FS' + end + end + rescue + nil + end + + def check_media_listing_inaccessible_s3! + urls_to_check = [] + paperclip_options = Paperclip::Attachment.default_options + s3_protocol = paperclip_options[:s3_protocol] + s3_host_alias = paperclip_options[:s3_host_alias] + s3_host_name = paperclip_options[:s3_host_name] + bucket_name = paperclip_options.dig(:s3_credentials, :bucket) + + urls_to_check << "#{s3_protocol}://#{s3_host_alias}/" if s3_host_alias.present? + urls_to_check << "#{s3_protocol}://#{s3_host_name}/#{bucket_name}/" + urls_to_check.uniq.each do |full_url| + check_s3_listing!(full_url) + break if @failure_message.present? + end + rescue + nil + end + + def check_s3_listing!(full_url) + bucket_url = Addressable::URI.parse(full_url) + bucket_url.path = bucket_url.path.delete_suffix(media_attachment.file.path(:original)) + bucket_url.query = "max-keys=1&x-random=#{SecureRandom.hex(10)}" + Request.new(:get, bucket_url, allow_local: true).perform do |res| + if res.truncated_body&.include?('ListBucketResult') + @failure_message = :upload_check_privacy_error_object_storage + @failure_action = 'https://docs.joinmastodon.org/admin/optional/object-storage/#S3' + end + end + end + + def media_attachment + @media_attachment ||= begin + attachment = Account.representative.media_attachments.first + if attachment.present? + attachment.touch # rubocop:disable Rails/SkipsModelValidations + attachment + else + create_test_attachment! + end + end + end + + def create_test_attachment! + Tempfile.create(%w(test-upload .jpg), binmode: true) do |tmp_file| + tmp_file.write( + Base64.decode64( + '/9j/4QAiRXhpZgAATU0AKgAAAAgAAQESAAMAAAABAAYAAAA' \ + 'AAAD/2wCEAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBA' \ + 'QEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE' \ + 'BAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAf/AABEIAAEAAgMBEQACEQEDEQH/x' \ + 'ABKAAEAAAAAAAAAAAAAAAAAAAALEAEAAAAAAAAAAAAAAAAAAAAAAQEAAAAAAAAAAAAAAAA' \ + 'AAAAAEQEAAAAAAAAAAAAAAAAAAAAA/9oADAMBAAIRAxEAPwA/8H//2Q==' + ) + ) + tmp_file.flush + Account.representative.media_attachments.create!(file: tmp_file) + end + end +end diff --git a/app/lib/admin/system_check/message.rb b/app/lib/admin/system_check/message.rb index bfcad3bf3..ad8d4b607 100644 --- a/app/lib/admin/system_check/message.rb +++ b/app/lib/admin/system_check/message.rb @@ -1,11 +1,12 @@ # frozen_string_literal: true class Admin::SystemCheck::Message - attr_reader :key, :value, :action + attr_reader :key, :value, :action, :critical - def initialize(key, value = nil, action = nil) - @key = key - @value = value - @action = action + def initialize(key, value = nil, action = nil, critical = false) + @key = key + @value = value + @action = action + @critical = critical end end diff --git a/app/views/admin/dashboard/index.html.haml b/app/views/admin/dashboard/index.html.haml index 8354f0b9f..425472abd 100644 --- a/app/views/admin/dashboard/index.html.haml +++ b/app/views/admin/dashboard/index.html.haml @@ -12,7 +12,7 @@ - unless @system_checks.empty? .flash-message-stack - @system_checks.each do |message| - .flash-message.warning + .flash-message{ class: message.critical ? 'alert' : 'warning' } = t("admin.system_checks.#{message.key}.message_html", value: message.value ? content_tag(:strong, message.value) : nil) - if message.action = link_to t("admin.system_checks.#{message.key}.action"), message.action diff --git a/config/locales/en.yml b/config/locales/en.yml index 7348206de..b821cd86a 100644 --- a/config/locales/en.yml +++ b/config/locales/en.yml @@ -783,6 +783,12 @@ en: message_html: You haven't defined any server rules. sidekiq_process_check: message_html: No Sidekiq process running for the %{value} queue(s). Please review your Sidekiq configuration + upload_check_privacy_error: + action: Check here for more information + message_html: "Your web server is misconfigured. The privacy of your users is at risk." + upload_check_privacy_error_object_storage: + action: Check here for more information + message_html: "Your object storage is misconfigured. The privacy of your users is at risk." tags: review: Review status updated_msg: Hashtag settings updated successfully