mirror of
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6b2ea1b47b
It makes more sense to use user_ids for the UserCommScreener
introduced in fa5f3e228c since
in most cases the ID will be available, not the username. This
was discovered while starting work on a plugin that will
use this. In the cases where only usernames are available
the extra query is negligble.
633 lines
20 KiB
Ruby
633 lines
20 KiB
Ruby
# frozen_string_literal: true
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# Responsible for creating posts and topics
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#
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class PostCreator
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include HasErrors
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attr_reader :opts
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# Acceptable options:
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#
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# raw - raw text of post
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# image_sizes - We can pass a list of the sizes of images in the post as a shortcut.
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# invalidate_oneboxes - Whether to force invalidation of oneboxes in this post
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# acting_user - The user performing the action might be different than the user
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# who is the post "author." For example when copying posts to a new
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# topic.
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# created_at - Post creation time (optional)
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# auto_track - Automatically track this topic if needed (default true)
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# custom_fields - Custom fields to be added to the post, Hash (default nil)
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# post_type - Whether this is a regular post or moderator post.
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# no_bump - Do not cause this post to bump the topic.
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# cooking_options - Options for rendering the text
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# cook_method - Method of cooking the post.
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# :regular - Pass through Markdown parser and strip bad HTML
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# :raw_html - Perform no processing
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# :raw_email - Imported from an email
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# via_email - Mark this post as arriving via email
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# raw_email - Full text of arriving email (to store)
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# action_code - Describes a small_action post (optional)
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# skip_jobs - Don't enqueue jobs when creation succeeds. This is needed if you
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# wrap `PostCreator` in a transaction, as the sidekiq jobs could
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# dequeue before the commit finishes. If you do this, be sure to
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# call `enqueue_jobs` after the transaction is committed.
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# hidden_reason_id - Reason for hiding the post (optional)
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# skip_validations - Do not validate any of the content in the post
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# draft_key - the key of the draft we are creating (will be deleted on success)
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# advance_draft - Destroy draft after creating post or topic
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# silent - Do not update topic stats and fields like last_post_user_id
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#
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# When replying to a topic:
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# topic_id - topic we're replying to
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# reply_to_post_number - post number we're replying to
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#
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# When creating a topic:
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# title - New topic title
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# archetype - Topic archetype
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# is_warning - Is the topic a warning?
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# category - Category to assign to topic
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# target_usernames - comma delimited list of usernames for membership (private message)
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# target_group_names - comma delimited list of groups for membership (private message)
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# meta_data - Topic meta data hash
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# created_at - Topic creation time (optional)
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# pinned_at - Topic pinned time (optional)
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# pinned_globally - Is the topic pinned globally (optional)
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# shared_draft - Is the topic meant to be a shared draft
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# topic_opts - Options to be overwritten for topic
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#
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def initialize(user, opts)
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# TODO: we should reload user in case it is tainted, should take in a user_id as opposed to user
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# If we don't do this we introduce a rather risky dependency
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@user = user
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@spam = false
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@opts = opts || {}
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opts[:title] = pg_clean_up(opts[:title]) if opts[:title]&.include?("\u0000")
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opts[:raw] = pg_clean_up(opts[:raw]) if opts[:raw]&.include?("\u0000")
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opts[:visible] = false if opts[:visible].nil? && opts[:hidden_reason_id].present?
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opts.delete(:reply_to_post_number) unless opts[:topic_id]
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end
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def pg_clean_up(str)
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str.gsub("\u0000", "")
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end
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def spam?
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@spam
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end
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def skip_validations?
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@opts[:skip_validations]
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end
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def guardian
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@guardian ||= @opts[:guardian] || Guardian.new(@user)
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end
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def valid?
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@topic = nil
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@post = nil
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if @user.suspended? && !skip_validations?
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errors.add(:base, I18n.t(:user_is_suspended))
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return false
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end
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if @opts[:target_usernames].present? && !skip_validations? && !@user.staff?
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names = @opts[:target_usernames].split(',').flatten.map(&:downcase)
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# Make sure max_allowed_message_recipients setting is respected
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max_allowed_message_recipients = SiteSetting.max_allowed_message_recipients
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if names.length > max_allowed_message_recipients
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errors.add(
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:base,
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I18n.t(:max_pm_recipients, recipients_limit: max_allowed_message_recipients)
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)
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return false
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end
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# Make sure none of the users have muted or ignored the creator or prevented
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# PMs from being sent to them
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target_users = User.where(username_lower: names.map(&:downcase)).pluck(:id, :username).to_h
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UserCommScreener.new(acting_user: @user, target_user_ids: target_users.keys).preventing_actor_communication.each do |user_id|
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errors.add(:base, I18n.t(:not_accepting_pms, username: target_users[user_id]))
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end
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return false if errors[:base].present?
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end
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if new_topic?
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topic_creator = TopicCreator.new(@user, guardian, @opts)
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return false unless skip_validations? || validate_child(topic_creator)
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else
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@topic = Topic.find_by(id: @opts[:topic_id])
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if @topic.present? && @opts[:archetype] == Archetype.private_message
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errors.add(:base, I18n.t(:create_pm_on_existing_topic))
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return false
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end
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if guardian.affected_by_slow_mode?(@topic)
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tu = TopicUser.find_by(user: @user, topic: @topic)
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if tu&.last_posted_at
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threshold = tu.last_posted_at + @topic.slow_mode_seconds.seconds
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if DateTime.now < threshold
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errors.add(:base, I18n.t(:slow_mode_enabled))
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return false
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end
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end
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end
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unless @topic.present? && (@opts[:skip_guardian] || guardian.can_create?(Post, @topic))
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errors.add(:base, I18n.t(:topic_not_found))
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return false
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end
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end
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setup_post
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return true if skip_validations?
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if @post.has_host_spam?
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@spam = true
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errors.add(:base, I18n.t(:spamming_host))
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return false
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end
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DiscourseEvent.trigger :before_create_post, @post
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DiscourseEvent.trigger :validate_post, @post
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post_validator = PostValidator.new(skip_topic: true)
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post_validator.validate(@post)
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valid = @post.errors.blank?
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add_errors_from(@post) unless valid
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valid
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end
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def create
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if valid?
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transaction do
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build_post_stats
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create_topic
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create_post_notice
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save_post
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UserActionManager.post_created(@post)
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extract_links
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track_topic
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update_topic_stats
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update_topic_auto_close
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update_user_counts
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create_embedded_topic
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@post.link_post_uploads
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update_uploads_secure_status
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delete_owned_bookmarks
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ensure_in_allowed_users if guardian.is_staff?
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unarchive_message if !@opts[:import_mode]
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DraftSequence.next!(@user, draft_key) if !@opts[:import_mode] && @opts[:advance_draft]
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@post.save_reply_relationships
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end
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end
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if @post && errors.blank? && !@opts[:import_mode]
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store_unique_post_key
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# update counters etc.
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@post.topic.reload
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publish
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track_latest_on_category
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enqueue_jobs unless @opts[:skip_jobs]
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BadgeGranter.queue_badge_grant(Badge::Trigger::PostRevision, post: @post)
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trigger_after_events unless opts[:skip_events]
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auto_close
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end
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if !opts[:import_mode]
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handle_spam if (@spam || @post)
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if !@spam && @post && errors.blank?
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ReviewablePost.queue_for_review_if_possible(@post, @user)
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end
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end
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@post
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end
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def create!
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create
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if !self.errors.full_messages.empty?
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raise ActiveRecord::RecordNotSaved.new(self.errors.full_messages.to_sentence)
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end
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@post
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end
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def enqueue_jobs
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return unless @post && !@post.errors.present?
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PostJobsEnqueuer.new(@post, @topic, new_topic?,
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import_mode: @opts[:import_mode],
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post_alert_options: @opts[:post_alert_options]
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).enqueue_jobs
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end
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def trigger_after_events
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DiscourseEvent.trigger(:topic_created, @post.topic, @opts, @user) unless @opts[:topic_id]
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DiscourseEvent.trigger(:post_created, @post, @opts, @user)
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end
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def self.track_post_stats
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Rails.env != "test" || @track_post_stats
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end
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def self.track_post_stats=(val)
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@track_post_stats = val
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end
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def self.create(user, opts)
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PostCreator.new(user, opts).create
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end
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def self.create!(user, opts)
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PostCreator.new(user, opts).create!
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end
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def self.before_create_tasks(post)
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set_reply_info(post)
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post.word_count = post.raw.scan(/[[:word:]]+/).size
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whisper = post.post_type == Post.types[:whisper]
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increase_posts_count = !post.topic&.private_message? || post.post_type != Post.types[:small_action]
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post.post_number ||= Topic.next_post_number(post.topic_id,
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reply: post.reply_to_post_number.present?,
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whisper: whisper,
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post: increase_posts_count)
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cooking_options = post.cooking_options || {}
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cooking_options[:topic_id] = post.topic_id
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post.cooked ||= post.cook(post.raw, cooking_options.symbolize_keys)
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post.sort_order = post.post_number
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post.last_version_at ||= Time.now
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end
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def self.set_reply_info(post)
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return unless post.reply_to_post_number.present?
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# Before the locking here was added, replying to a post and liking a post
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# at roughly the same time could cause a deadlock.
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#
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# Liking a post grabs an update lock on the post and then on the topic (to
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# update like counts).
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#
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# Here, we lock the replied to post before getting the topic lock so that
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# we can update the replied to post later without causing a deadlock.
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reply_info = Post.where(topic_id: post.topic_id, post_number: post.reply_to_post_number)
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.select(:user_id, :post_type)
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.lock
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.first
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if reply_info.present?
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post.reply_to_user_id ||= reply_info.user_id
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whisper_type = Post.types[:whisper]
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post.post_type = whisper_type if reply_info.post_type == whisper_type
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end
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end
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protected
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def draft_key
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@draft_key ||= @opts[:draft_key]
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@draft_key ||= @topic ? @topic.draft_key : Draft::NEW_TOPIC
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end
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def build_post_stats
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if PostCreator.track_post_stats
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sequence = DraftSequence.current(@user, draft_key)
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revisions = Draft.where(sequence: sequence,
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user_id: @user.id,
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draft_key: draft_key).pluck_first(:revisions) || 0
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@post.build_post_stat(
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drafts_saved: revisions,
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typing_duration_msecs: @opts[:typing_duration_msecs] || 0,
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composer_open_duration_msecs: @opts[:composer_open_duration_msecs] || 0
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)
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end
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end
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def auto_close
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topic = @post.topic
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is_private_message = topic.private_message?
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topic_posts_count = @post.topic.posts_count
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if is_private_message &&
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!topic.closed &&
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SiteSetting.auto_close_messages_post_count > 0 &&
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SiteSetting.auto_close_messages_post_count <= topic_posts_count
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@post.topic.update_status(
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:closed, true, Discourse.system_user,
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message: I18n.t(
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'topic_statuses.autoclosed_message_max_posts',
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count: SiteSetting.auto_close_messages_post_count,
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locale: SiteSetting.default_locale
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)
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)
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elsif !is_private_message &&
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!topic.closed &&
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SiteSetting.auto_close_topics_post_count > 0 &&
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SiteSetting.auto_close_topics_post_count <= topic_posts_count
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topic.update_status(
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:closed, true, Discourse.system_user,
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message: I18n.t(
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'topic_statuses.autoclosed_topic_max_posts',
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count: SiteSetting.auto_close_topics_post_count,
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locale: SiteSetting.default_locale
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)
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)
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if SiteSetting.auto_close_topics_create_linked_topic?
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# enqueue a job to create a linked topic
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Jobs.enqueue_in(5.seconds, :create_linked_topic, post_id: @post.id)
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end
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end
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end
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def transaction(&blk)
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if new_topic?
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Post.transaction do
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blk.call
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end
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else
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# we need to ensure post_number is monotonically increasing with no gaps
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# so we serialize creation to avoid needing rollbacks
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DistributedMutex.synchronize("topic_id_#{@opts[:topic_id]}") do
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Post.transaction do
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blk.call
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end
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end
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end
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end
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# You can supply an `embed_url` for a post to set up the embedded relationship.
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# This is used by the wp-discourse plugin to associate a remote post with a
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# discourse post.
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def create_embedded_topic
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return unless @opts[:embed_url].present?
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original_uri = URI.parse(@opts[:embed_url])
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raise Discourse::InvalidParameters.new(:embed_url) unless original_uri.is_a?(URI::HTTP)
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embed = TopicEmbed.new(topic_id: @post.topic_id, post_id: @post.id, embed_url: @opts[:embed_url])
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rollback_from_errors!(embed) unless embed.save
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end
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def update_uploads_secure_status
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@post.update_uploads_secure_status(source: "post creator") if SiteSetting.secure_media?
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end
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def delete_owned_bookmarks
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return if !@post.topic_id
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BookmarkManager.new(@user).destroy_for_topic(
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Topic.with_deleted.find(@post.topic_id),
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{ auto_delete_preference: Bookmark.auto_delete_preferences[:on_owner_reply] },
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@opts
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)
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end
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def handle_spam
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if @spam
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GroupMessage.create(Group[:moderators].name,
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:spam_post_blocked,
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user: @user,
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limit_once_per: 24.hours,
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message_params: { domains: @post.linked_hosts.keys.join(', ') })
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elsif @post && errors.blank? && !skip_validations?
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SpamRule::FlagSockpuppets.new(@post).perform
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end
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end
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def track_latest_on_category
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return unless @post && @post.errors.count == 0 && @topic && @topic.category_id
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Category.where(id: @topic.category_id).update_all(latest_post_id: @post.id)
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Category.where(id: @topic.category_id).update_all(latest_topic_id: @topic.id) if @post.is_first_post?
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end
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def ensure_in_allowed_users
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return unless @topic.private_message? && @topic.id
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return if @post.whisper?
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return if @topic.topic_allowed_users.exists?(user_id: @user.id)
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return if @topic
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.topic_allowed_groups
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.where(
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"group_id IN (SELECT group_id FROM group_users where user_id = ?)",
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@user.id
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)
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.exists?
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@topic.topic_allowed_users.create!(user_id: @user.id)
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end
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def unarchive_message
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return unless @topic.private_message? && @topic.id
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UserArchivedMessage.where(topic_id: @topic.id).pluck(:user_id).each do |user_id|
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UserArchivedMessage.move_to_inbox!(user_id, @topic)
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end
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GroupArchivedMessage.where(topic_id: @topic.id).pluck(:group_id).each do |group_id|
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GroupArchivedMessage.move_to_inbox!(group_id, @topic, acting_user_id: @user.id)
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end
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end
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private
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def create_topic
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return if @topic
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begin
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opts = @opts[:topic_opts] ? @opts.merge(@opts[:topic_opts]) : @opts
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topic_creator = TopicCreator.new(@user, guardian, opts)
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@topic = topic_creator.create
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rescue ActiveRecord::Rollback
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rollback_from_errors!(topic_creator)
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end
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@post.topic_id = @topic.id
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@post.topic = @topic
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if @topic && @topic.category && @topic.category.all_topics_wiki
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@post.wiki = true
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end
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end
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def update_topic_stats
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attrs = { updated_at: Time.now }
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if @post.post_type != Post.types[:whisper] && !@opts[:silent]
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attrs[:last_posted_at] = @post.created_at
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attrs[:last_post_user_id] = @post.user_id
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attrs[:word_count] = (@topic.word_count || 0) + @post.word_count
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attrs[:excerpt] = @post.excerpt_for_topic if new_topic?
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attrs[:bumped_at] = @post.created_at unless @post.no_bump
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end
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@topic.update_columns(attrs)
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end
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def update_topic_auto_close
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return if @opts[:import_mode]
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if @topic.closed?
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@topic.delete_topic_timer(TopicTimer.types[:close])
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else
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topic_timer = @topic.public_topic_timer
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if topic_timer &&
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topic_timer.based_on_last_post &&
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topic_timer.duration_minutes.to_i > 0
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@topic.set_or_create_timer(TopicTimer.types[:close],
|
|
nil,
|
|
based_on_last_post: topic_timer.based_on_last_post,
|
|
duration_minutes: topic_timer.duration_minutes
|
|
)
|
|
end
|
|
end
|
|
end
|
|
|
|
def setup_post
|
|
@opts[:raw] = TextCleaner.normalize_whitespaces(@opts[:raw] || '').gsub(/\s+\z/, "")
|
|
|
|
post = Post.new(raw: @opts[:raw],
|
|
topic_id: @topic.try(:id),
|
|
user: @user,
|
|
reply_to_post_number: @opts[:reply_to_post_number])
|
|
|
|
# Attributes we pass through to the post instance if present
|
|
[:post_type, :no_bump, :cooking_options, :image_sizes, :acting_user, :invalidate_oneboxes, :cook_method, :via_email, :raw_email, :action_code].each do |a|
|
|
post.public_send("#{a}=", @opts[a]) if @opts[a].present?
|
|
end
|
|
|
|
post.extract_quoted_post_numbers
|
|
|
|
post.created_at = if @opts[:created_at].is_a?(Time)
|
|
@opts[:created_at]
|
|
elsif @opts[:created_at].present?
|
|
Time.zone.parse(@opts[:created_at].to_s)
|
|
end
|
|
|
|
if fields = @opts[:custom_fields]
|
|
post.custom_fields = fields
|
|
end
|
|
|
|
if @opts[:hidden_reason_id].present?
|
|
post.hidden = true
|
|
post.hidden_at = Time.zone.now
|
|
post.hidden_reason_id = @opts[:hidden_reason_id]
|
|
end
|
|
|
|
@post = post
|
|
end
|
|
|
|
def save_post
|
|
@post.disable_rate_limits! if skip_validations?
|
|
@post.skip_validation = skip_validations?
|
|
saved = @post.save
|
|
rollback_from_errors!(@post) unless saved
|
|
end
|
|
|
|
def store_unique_post_key
|
|
@post.store_unique_post_key
|
|
end
|
|
|
|
def update_user_counts
|
|
return if @opts[:import_mode]
|
|
|
|
@user.create_user_stat if @user.user_stat.nil?
|
|
|
|
if @user.user_stat.first_post_created_at.nil?
|
|
@user.user_stat.update!(first_post_created_at: @post.created_at)
|
|
end
|
|
|
|
if !@post.hidden || @post.topic.visible
|
|
UserStatCountUpdater.increment!(@post)
|
|
end
|
|
|
|
if !@topic.private_message? && @post.post_type != Post.types[:whisper]
|
|
@user.update(last_posted_at: @post.created_at)
|
|
end
|
|
end
|
|
|
|
def create_post_notice
|
|
return if @opts[:import_mode] || @user.anonymous? || @user.bot? || @user.staged
|
|
|
|
last_post_time = Post.where(user_id: @user.id)
|
|
.order(created_at: :desc)
|
|
.limit(1)
|
|
.pluck(:created_at)
|
|
.first
|
|
|
|
if !last_post_time
|
|
@post.custom_fields[Post::NOTICE] = { type: Post.notices[:new_user] }
|
|
elsif SiteSetting.returning_users_days > 0 && last_post_time < SiteSetting.returning_users_days.days.ago
|
|
@post.custom_fields[Post::NOTICE] = {
|
|
type: Post.notices[:returning_user],
|
|
last_posted_at: last_post_time.iso8601
|
|
}
|
|
end
|
|
end
|
|
|
|
def publish
|
|
return if @opts[:import_mode] || @post.post_number == 1
|
|
@post.publish_change_to_clients! :created, { skip_topic_stats: @post.post_number == 1 }
|
|
end
|
|
|
|
def extract_links
|
|
TopicLink.extract_from(@post)
|
|
QuotedPost.extract_from(@post)
|
|
end
|
|
|
|
def track_topic
|
|
return if @opts[:import_mode] || @opts[:auto_track] == false
|
|
|
|
TopicUser.change(@post.user_id,
|
|
@topic.id,
|
|
posted: true,
|
|
last_read_post_number: @post.post_number,
|
|
last_posted_at: Time.zone.now)
|
|
|
|
# assume it took us 5 seconds of reading time to make a post
|
|
PostTiming.record_timing(topic_id: @post.topic_id,
|
|
user_id: @post.user_id,
|
|
post_number: @post.post_number,
|
|
msecs: 5000)
|
|
|
|
if @user.staged
|
|
TopicUser.auto_notification_for_staging(@user.id, @topic.id, TopicUser.notification_reasons[:auto_watch])
|
|
elsif !@topic.private_message?
|
|
notification_level = @user.user_option.notification_level_when_replying || NotificationLevels.topic_levels[:tracking]
|
|
TopicUser.auto_notification(@user.id, @topic.id, TopicUser.notification_reasons[:created_post], notification_level)
|
|
end
|
|
end
|
|
|
|
def new_topic?
|
|
@opts[:topic_id].blank?
|
|
end
|
|
|
|
end
|