mastodon/app/models/status.rb
Claire 0a120d86d2
Fix error-prone SQL queries (#15828)
* Fix error-prone SQL queries in Account search

While this code seems to not present an actual vulnerability, one could
easily be introduced by mistake due to how the query is built.

This PR parameterises the `to_tsquery` input to make the query more robust.

* Harden code for Status#tagged_with_all and Status#tagged_with_none

Those two scopes aren't used in a way that could be vulnerable to an SQL
injection, but keeping them unchanged might be a hazard.

* Remove unneeded spaces surrounding tsquery term

* Please CodeClimate

* Move advanced_search_for SQL template to its own function

This avoids one level of indentation while making clearer that the SQL template
isn't build from all the dynamic parameters of advanced_search_for.

* Add tests covering tagged_with, tagged_with_all and tagged_with_none

* Rewrite tagged_with_none to avoid multiple joins and make it more robust

* Remove obsolete brakeman warnings

* Revert "Remove unneeded spaces surrounding tsquery term"

The two queries are not strictly equivalent.

This reverts commit 86f16c537e06c6ba4a8b250f25dcce9f049023ff.
2022-01-23 18:10:10 +01:00

451 lines
14 KiB
Ruby

# frozen_string_literal: true
# == Schema Information
#
# Table name: statuses
#
# id :bigint(8) not null, primary key
# uri :string
# text :text default(""), not null
# created_at :datetime not null
# updated_at :datetime not null
# in_reply_to_id :bigint(8)
# reblog_of_id :bigint(8)
# url :string
# sensitive :boolean default(FALSE), not null
# visibility :integer default("public"), not null
# spoiler_text :text default(""), not null
# reply :boolean default(FALSE), not null
# language :string
# conversation_id :bigint(8)
# local :boolean
# account_id :bigint(8) not null
# application_id :bigint(8)
# in_reply_to_account_id :bigint(8)
# poll_id :bigint(8)
# deleted_at :datetime
# edited_at :datetime
#
class Status < ApplicationRecord
before_destroy :unlink_from_conversations
include Discard::Model
include Paginable
include Cacheable
include StatusThreadingConcern
include RateLimitable
rate_limit by: :account, family: :statuses
self.discard_column = :deleted_at
# If `override_timestamps` is set at creation time, Snowflake ID creation
# will be based on current time instead of `created_at`
attr_accessor :override_timestamps
update_index('statuses', :proper)
enum visibility: [:public, :unlisted, :private, :direct, :limited], _suffix: :visibility
belongs_to :application, class_name: 'Doorkeeper::Application', optional: true
belongs_to :account, inverse_of: :statuses
belongs_to :in_reply_to_account, foreign_key: 'in_reply_to_account_id', class_name: 'Account', optional: true
belongs_to :conversation, optional: true
belongs_to :preloadable_poll, class_name: 'Poll', foreign_key: 'poll_id', optional: true
belongs_to :thread, foreign_key: 'in_reply_to_id', class_name: 'Status', inverse_of: :replies, optional: true
belongs_to :reblog, foreign_key: 'reblog_of_id', class_name: 'Status', inverse_of: :reblogs, optional: true
has_many :edits, class_name: 'StatusEdit', inverse_of: :status, dependent: :destroy
has_many :favourites, inverse_of: :status, dependent: :destroy
has_many :bookmarks, inverse_of: :status, dependent: :destroy
has_many :reblogs, foreign_key: 'reblog_of_id', class_name: 'Status', inverse_of: :reblog, dependent: :destroy
has_many :replies, foreign_key: 'in_reply_to_id', class_name: 'Status', inverse_of: :thread
has_many :mentions, dependent: :destroy, inverse_of: :status
has_many :active_mentions, -> { active }, class_name: 'Mention', inverse_of: :status
has_many :media_attachments, dependent: :nullify
has_and_belongs_to_many :tags
has_and_belongs_to_many :preview_cards
has_one :notification, as: :activity, dependent: :destroy
has_one :status_stat, inverse_of: :status
has_one :poll, inverse_of: :status, dependent: :destroy
validates :uri, uniqueness: true, presence: true, unless: :local?
validates :text, presence: true, unless: -> { with_media? || reblog? }
validates_with StatusLengthValidator
validates_with DisallowedHashtagsValidator
validates :reblog, uniqueness: { scope: :account }, if: :reblog?
validates :visibility, exclusion: { in: %w(direct limited) }, if: :reblog?
accepts_nested_attributes_for :poll
default_scope { recent.kept }
scope :recent, -> { reorder(id: :desc) }
scope :remote, -> { where(local: false).where.not(uri: nil) }
scope :local, -> { where(local: true).or(where(uri: nil)) }
scope :with_accounts, ->(ids) { where(id: ids).includes(:account) }
scope :without_replies, -> { where('statuses.reply = FALSE OR statuses.in_reply_to_account_id = statuses.account_id') }
scope :without_reblogs, -> { where('statuses.reblog_of_id IS NULL') }
scope :with_public_visibility, -> { where(visibility: :public) }
scope :tagged_with, ->(tag_ids) { joins(:statuses_tags).where(statuses_tags: { tag_id: tag_ids }) }
scope :in_chosen_languages, ->(account) { where(language: nil).or where(language: account.chosen_languages) }
scope :excluding_silenced_accounts, -> { left_outer_joins(:account).where(accounts: { silenced_at: nil }) }
scope :including_silenced_accounts, -> { left_outer_joins(:account).where.not(accounts: { silenced_at: nil }) }
scope :not_excluded_by_account, ->(account) { where.not(account_id: account.excluded_from_timeline_account_ids) }
scope :not_domain_blocked_by_account, ->(account) { account.excluded_from_timeline_domains.blank? ? left_outer_joins(:account) : left_outer_joins(:account).where('accounts.domain IS NULL OR accounts.domain NOT IN (?)', account.excluded_from_timeline_domains) }
scope :tagged_with_all, ->(tag_ids) {
Array(tag_ids).map(&:to_i).reduce(self) do |result, id|
result.joins("INNER JOIN statuses_tags t#{id} ON t#{id}.status_id = statuses.id AND t#{id}.tag_id = #{id}")
end
}
scope :tagged_with_none, ->(tag_ids) {
where('NOT EXISTS (SELECT * FROM statuses_tags forbidden WHERE forbidden.status_id = statuses.id AND forbidden.tag_id IN (?))', tag_ids)
}
cache_associated :application,
:media_attachments,
:conversation,
:status_stat,
:tags,
:preview_cards,
:preloadable_poll,
account: [:account_stat, :user],
active_mentions: { account: :account_stat },
reblog: [
:application,
:tags,
:preview_cards,
:media_attachments,
:conversation,
:status_stat,
:preloadable_poll,
account: [:account_stat, :user],
active_mentions: { account: :account_stat },
],
thread: { account: :account_stat }
delegate :domain, to: :account, prefix: true
REAL_TIME_WINDOW = 6.hours
def searchable_by(preloaded = nil)
ids = []
ids << account_id if local?
if preloaded.nil?
ids += mentions.where(account: Account.local, silent: false).pluck(:account_id)
ids += favourites.where(account: Account.local).pluck(:account_id)
ids += reblogs.where(account: Account.local).pluck(:account_id)
ids += bookmarks.where(account: Account.local).pluck(:account_id)
else
ids += preloaded.mentions[id] || []
ids += preloaded.favourites[id] || []
ids += preloaded.reblogs[id] || []
ids += preloaded.bookmarks[id] || []
end
ids.uniq
end
def reply?
!in_reply_to_id.nil? || attributes['reply']
end
def local?
attributes['local'] || uri.nil?
end
def in_reply_to_local_account?
reply? && thread&.account&.local?
end
def reblog?
!reblog_of_id.nil?
end
def within_realtime_window?
created_at >= REAL_TIME_WINDOW.ago
end
def verb
if destroyed?
:delete
else
reblog? ? :share : :post
end
end
def object_type
reply? ? :comment : :note
end
def proper
reblog? ? reblog : self
end
def content
proper.text
end
def target
reblog
end
def preview_card
preview_cards.first
end
def hidden?
!distributable?
end
def distributable?
public_visibility? || unlisted_visibility?
end
def edited?
edited_at.present?
end
alias sign? distributable?
def with_media?
media_attachments.any?
end
def non_sensitive_with_media?
!sensitive? && with_media?
end
def reported?
@reported ||= Report.where(target_account: account).unresolved.where('? = ANY(status_ids)', id).exists?
end
def emojis
return @emojis if defined?(@emojis)
fields = [spoiler_text, text]
fields += preloadable_poll.options unless preloadable_poll.nil?
@emojis = CustomEmoji.from_text(fields.join(' '), account.domain)
end
def replies_count
status_stat&.replies_count || 0
end
def reblogs_count
status_stat&.reblogs_count || 0
end
def favourites_count
status_stat&.favourites_count || 0
end
def increment_count!(key)
update_status_stat!(key => public_send(key) + 1)
end
def decrement_count!(key)
update_status_stat!(key => [public_send(key) - 1, 0].max)
end
after_create_commit :increment_counter_caches
after_destroy_commit :decrement_counter_caches
after_create_commit :store_uri, if: :local?
after_create_commit :update_statistics, if: :local?
around_create Mastodon::Snowflake::Callbacks
before_validation :prepare_contents, if: :local?
before_validation :set_reblog
before_validation :set_visibility
before_validation :set_conversation
before_validation :set_local
after_create :set_poll_id
class << self
def selectable_visibilities
visibilities.keys - %w(direct limited)
end
def favourites_map(status_ids, account_id)
Favourite.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |f, h| h[f.status_id] = true }
end
def bookmarks_map(status_ids, account_id)
Bookmark.select('status_id').where(status_id: status_ids).where(account_id: account_id).map { |f| [f.status_id, true] }.to_h
end
def reblogs_map(status_ids, account_id)
unscoped.select('reblog_of_id').where(reblog_of_id: status_ids).where(account_id: account_id).each_with_object({}) { |s, h| h[s.reblog_of_id] = true }
end
def mutes_map(conversation_ids, account_id)
ConversationMute.select('conversation_id').where(conversation_id: conversation_ids).where(account_id: account_id).each_with_object({}) { |m, h| h[m.conversation_id] = true }
end
def pins_map(status_ids, account_id)
StatusPin.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |p, h| h[p.status_id] = true }
end
def reload_stale_associations!(cached_items)
account_ids = []
cached_items.each do |item|
account_ids << item.account_id
account_ids << item.reblog.account_id if item.reblog?
end
account_ids.uniq!
return if account_ids.empty?
accounts = Account.where(id: account_ids).includes(:account_stat, :user).index_by(&:id)
cached_items.each do |item|
item.account = accounts[item.account_id]
item.reblog.account = accounts[item.reblog.account_id] if item.reblog?
end
end
def permitted_for(target_account, account)
visibility = [:public, :unlisted]
if account.nil?
where(visibility: visibility)
elsif target_account.blocking?(account) || (account.domain.present? && target_account.domain_blocking?(account.domain)) # get rid of blocked peeps
none
elsif account.id == target_account.id # author can see own stuff
all
else
# followers can see followers-only stuff, but also things they are mentioned in.
# non-followers can see everything that isn't private/direct, but can see stuff they are mentioned in.
visibility.push(:private) if account.following?(target_account)
scope = left_outer_joins(:reblog)
scope.where(visibility: visibility)
.or(scope.where(id: account.mentions.select(:status_id)))
.merge(scope.where(reblog_of_id: nil).or(scope.where.not(reblogs_statuses: { account_id: account.excluded_from_timeline_account_ids })))
end
end
def from_text(text)
return [] if text.blank?
text.scan(FetchLinkCardService::URL_PATTERN).map(&:second).uniq.filter_map do |url|
status = begin
if TagManager.instance.local_url?(url)
ActivityPub::TagManager.instance.uri_to_resource(url, Status)
else
EntityCache.instance.status(url)
end
end
status&.distributable? ? status : nil
end
end
end
def status_stat
super || build_status_stat
end
private
def update_status_stat!(attrs)
return if marked_for_destruction? || destroyed?
status_stat.update(attrs)
end
def store_uri
update_column(:uri, ActivityPub::TagManager.instance.uri_for(self)) if uri.nil?
end
def prepare_contents
text&.strip!
spoiler_text&.strip!
end
def set_reblog
self.reblog = reblog.reblog if reblog? && reblog.reblog?
end
def set_poll_id
update_column(:poll_id, poll.id) unless poll.nil?
end
def set_visibility
self.visibility = reblog.visibility if reblog? && visibility.nil?
self.visibility = (account.locked? ? :private : :public) if visibility.nil?
self.sensitive = false if sensitive.nil?
end
def set_conversation
self.thread = thread.reblog if thread&.reblog?
self.reply = !(in_reply_to_id.nil? && thread.nil?) unless reply
if reply? && !thread.nil?
self.in_reply_to_account_id = carried_over_reply_to_account_id
self.conversation_id = thread.conversation_id if conversation_id.nil?
elsif conversation_id.nil?
self.conversation = Conversation.new
end
end
def carried_over_reply_to_account_id
if thread.account_id == account_id && thread.reply?
thread.in_reply_to_account_id
else
thread.account_id
end
end
def set_local
self.local = account.local?
end
def update_statistics
return unless distributable?
ActivityTracker.increment('activity:statuses:local')
end
def increment_counter_caches
return if direct_visibility?
account&.increment_count!(:statuses_count)
reblog&.increment_count!(:reblogs_count) if reblog?
thread&.increment_count!(:replies_count) if in_reply_to_id.present? && distributable?
end
def decrement_counter_caches
return if direct_visibility? || new_record?
account&.decrement_count!(:statuses_count)
reblog&.decrement_count!(:reblogs_count) if reblog?
thread&.decrement_count!(:replies_count) if in_reply_to_id.present? && distributable?
end
def unlink_from_conversations
return unless direct_visibility?
mentioned_accounts = (association(:mentions).loaded? ? mentions : mentions.includes(:account)).map(&:account)
inbox_owners = mentioned_accounts.select(&:local?) + (account.local? ? [account] : [])
inbox_owners.each do |inbox_owner|
AccountConversation.remove_status(inbox_owner, self)
end
end
end