319 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			319 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
# frozen_string_literal: true
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# == Schema Information
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#
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# Table name: accounts
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#
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#  id                      :integer          not null, primary key
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#  username                :string           default(""), not null
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#  domain                  :string
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#  secret                  :string           default(""), not null
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#  private_key             :text
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#  public_key              :text             default(""), not null
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#  remote_url              :string           default(""), not null
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#  salmon_url              :string           default(""), not null
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#  hub_url                 :string           default(""), not null
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#  created_at              :datetime         not null
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#  updated_at              :datetime         not null
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#  note                    :text             default(""), not null
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#  display_name            :string           default(""), not null
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#  uri                     :string           default(""), not null
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#  url                     :string
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#  avatar_file_name        :string
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#  avatar_content_type     :string
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#  avatar_file_size        :integer
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#  avatar_updated_at       :datetime
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#  header_file_name        :string
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#  header_content_type     :string
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#  header_file_size        :integer
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#  header_updated_at       :datetime
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#  avatar_remote_url       :string
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#  subscription_expires_at :datetime
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#  silenced                :boolean          default(FALSE), not null
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#  suspended               :boolean          default(FALSE), not null
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#  locked                  :boolean          default(FALSE), not null
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#  header_remote_url       :string           default(""), not null
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#  statuses_count          :integer          default(0), not null
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#  followers_count         :integer          default(0), not null
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#  following_count         :integer          default(0), not null
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#  last_webfingered_at     :datetime
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#  inbox_url               :string           default(""), not null
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#  outbox_url              :string           default(""), not null
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#  shared_inbox_url        :string           default(""), not null
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#  followers_url           :string           default(""), not null
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#  protocol                :integer          default("ostatus"), not null
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#
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class Account < ApplicationRecord
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  MENTION_RE = /(?:^|[^\/[:word:]])@(([a-z0-9_]+)(?:@[a-z0-9\.\-]+[a-z0-9]+)?)/i
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  include AccountAvatar
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  include AccountFinderConcern
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  include AccountHeader
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  include AccountInteractions
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  include Attachmentable
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  include Remotable
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  MAX_NOTE_LENGTH = 500
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  enum protocol: [:ostatus, :activitypub]
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  # Local users
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  has_one :user, inverse_of: :account
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  validates :username, presence: true
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  # Remote user validations
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  validates :username, uniqueness: { scope: :domain, case_sensitive: true }, if: -> { !local? && will_save_change_to_username? }
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  # Local user validations
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  validates :username, format: { with: /\A[a-z0-9_]+\z/i }, uniqueness: { scope: :domain, case_sensitive: false }, length: { maximum: 30 }, if: -> { local? && will_save_change_to_username? }
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  validates_with UnreservedUsernameValidator, if: -> { local? && will_save_change_to_username? }
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  validates :display_name, length: { maximum: 30 }, if: -> { local? && will_save_change_to_display_name? }
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  validate :note_length_does_not_exceed_length_limit, if: -> { local? && will_save_change_to_note? }
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  # Timelines
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  has_many :stream_entries, inverse_of: :account, dependent: :destroy
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  has_many :statuses, inverse_of: :account, dependent: :destroy
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  has_many :favourites, inverse_of: :account, dependent: :destroy
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  has_many :mentions, inverse_of: :account, dependent: :destroy
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  has_many :notifications, inverse_of: :account, dependent: :destroy
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  # Pinned statuses
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  has_many :status_pins, inverse_of: :account, dependent: :destroy
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  has_many :pinned_statuses, -> { reorder('status_pins.created_at DESC') }, through: :status_pins, class_name: 'Status', source: :status
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  # Media
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  has_many :media_attachments, dependent: :destroy
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  # PuSH subscriptions
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  has_many :subscriptions, dependent: :destroy
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  # Report relationships
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  has_many :reports
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  has_many :targeted_reports, class_name: 'Report', foreign_key: :target_account_id
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  # Moderation notes
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  has_many :account_moderation_notes, dependent: :destroy
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  has_many :targeted_moderation_notes, class_name: 'AccountModerationNote', foreign_key: :target_account_id, dependent: :destroy
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  scope :remote, -> { where.not(domain: nil) }
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  scope :local, -> { where(domain: nil) }
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  scope :without_followers, -> { where(followers_count: 0) }
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  scope :with_followers, -> { where('followers_count > 0') }
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  scope :expiring, ->(time) { remote.where.not(subscription_expires_at: nil).where('subscription_expires_at < ?', time) }
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  scope :partitioned, -> { order('row_number() over (partition by domain)') }
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  scope :silenced, -> { where(silenced: true) }
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  scope :suspended, -> { where(suspended: true) }
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  scope :recent, -> { reorder(id: :desc) }
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  scope :alphabetic, -> { order(domain: :asc, username: :asc) }
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  scope :by_domain_accounts, -> { group(:domain).select(:domain, 'COUNT(*) AS accounts_count').order('accounts_count desc') }
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  scope :matches_username, ->(value) { where(arel_table[:username].matches("#{value}%")) }
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  scope :matches_display_name, ->(value) { where(arel_table[:display_name].matches("#{value}%")) }
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  scope :matches_domain, ->(value) { where(arel_table[:domain].matches("%#{value}%")) }
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  delegate :email,
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           :current_sign_in_ip,
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           :current_sign_in_at,
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           :confirmed?,
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           :admin?,
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           :locale,
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           to: :user,
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           prefix: true,
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           allow_nil: true
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  delegate :filtered_languages, to: :user, prefix: false, allow_nil: true
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  def local?
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    domain.nil?
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  end
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  def acct
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    local? ? username : "#{username}@#{domain}"
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  end
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  def local_username_and_domain
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    "#{username}@#{Rails.configuration.x.local_domain}"
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  end
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  def to_webfinger_s
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    "acct:#{local_username_and_domain}"
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  end
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  def subscribed?
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    subscription_expires_at.present?
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  end
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  def possibly_stale?
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    last_webfingered_at.nil? || last_webfingered_at <= 1.day.ago
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  end
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  def refresh!
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    return if local?
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    ResolveRemoteAccountService.new.call(acct)
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  end
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  def keypair
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    @keypair ||= OpenSSL::PKey::RSA.new(private_key || public_key)
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  end
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  def subscription(webhook_url)
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    @subscription ||= OStatus2::Subscription.new(remote_url, secret: secret, webhook: webhook_url, hub: hub_url)
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  end
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  def save_with_optional_media!
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    save!
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  rescue ActiveRecord::RecordInvalid
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    self.avatar              = nil
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    self.header              = nil
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    self[:avatar_remote_url] = ''
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    self[:header_remote_url] = ''
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    save!
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  end
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  def object_type
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    :person
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  end
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  def to_param
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    username
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  end
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  def excluded_from_timeline_account_ids
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    Rails.cache.fetch("exclude_account_ids_for:#{id}") { blocking.pluck(:target_account_id) + blocked_by.pluck(:account_id) + muting.pluck(:target_account_id) }
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  end
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  def excluded_from_timeline_domains
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    Rails.cache.fetch("exclude_domains_for:#{id}") { domain_blocks.pluck(:domain) }
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  end
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  class << self
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    def readonly_attributes
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      super - %w(statuses_count following_count followers_count)
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    end
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    def domains
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      reorder(nil).pluck('distinct accounts.domain')
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    end
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    def inboxes
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      urls = reorder(nil).where(protocol: :activitypub).pluck("distinct coalesce(nullif(accounts.shared_inbox_url, ''), accounts.inbox_url)")
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      DeliveryFailureTracker.filter(urls)
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    end
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    def triadic_closures(account, limit: 5, offset: 0)
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      sql = <<-SQL.squish
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        WITH first_degree AS (
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          SELECT target_account_id
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          FROM follows
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          WHERE account_id = :account_id
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        )
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        SELECT accounts.*
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        FROM follows
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        INNER JOIN accounts ON follows.target_account_id = accounts.id
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        WHERE
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          account_id IN (SELECT * FROM first_degree)
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          AND target_account_id NOT IN (SELECT * FROM first_degree)
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          AND target_account_id NOT IN (:excluded_account_ids)
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          AND accounts.suspended = false
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        GROUP BY target_account_id, accounts.id
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        ORDER BY count(account_id) DESC
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        OFFSET :offset
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        LIMIT :limit
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      SQL
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      excluded_account_ids = account.excluded_from_timeline_account_ids + [account.id]
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      find_by_sql(
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        [sql, { account_id: account.id, excluded_account_ids: excluded_account_ids, limit: limit, offset: offset }]
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      )
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    end
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    def search_for(terms, limit = 10)
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      textsearch, query = generate_query_for_search(terms)
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      sql = <<-SQL.squish
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        SELECT
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          accounts.*,
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          ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
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        FROM accounts
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        WHERE #{query} @@ #{textsearch}
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          AND accounts.suspended = false
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        ORDER BY rank DESC
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        LIMIT ?
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      SQL
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      find_by_sql([sql, limit])
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    end
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    def advanced_search_for(terms, account, limit = 10)
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      textsearch, query = generate_query_for_search(terms)
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      sql = <<-SQL.squish
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        SELECT
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          accounts.*,
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          (count(f.id) + 1) * ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
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        FROM accounts
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        LEFT OUTER JOIN follows AS f ON (accounts.id = f.account_id AND f.target_account_id = ?) OR (accounts.id = f.target_account_id AND f.account_id = ?)
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        WHERE #{query} @@ #{textsearch}
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          AND accounts.suspended = false
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        GROUP BY accounts.id
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        ORDER BY rank DESC
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        LIMIT ?
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      SQL
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      find_by_sql([sql, account.id, account.id, limit])
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    end
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    private
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    def generate_query_for_search(terms)
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      terms      = Arel.sql(connection.quote(terms.gsub(/['?\\:]/, ' ')))
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      textsearch = "(setweight(to_tsvector('simple', accounts.display_name), 'A') || setweight(to_tsvector('simple', accounts.username), 'B') || setweight(to_tsvector('simple', coalesce(accounts.domain, '')), 'C'))"
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      query      = "to_tsquery('simple', ''' ' || #{terms} || ' ''' || ':*')"
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      [textsearch, query]
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    end
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  end
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  before_create :generate_keys
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  before_validation :normalize_domain
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  before_validation :prepare_contents, if: :local?
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  private
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  def prepare_contents
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    display_name&.strip!
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    note&.strip!
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  end
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  def generate_keys
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    return unless local?
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    keypair = OpenSSL::PKey::RSA.new(Rails.env.test? ? 512 : 2048)
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    self.private_key = keypair.to_pem
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    self.public_key  = keypair.public_key.to_pem
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  end
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  YAML_START = "---\r\n"
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  YAML_END = "\r\n...\r\n"
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  def note_length_does_not_exceed_length_limit
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    note_without_metadata = note
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    if note.start_with? YAML_START
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      idx = note.index YAML_END
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      unless idx.nil?
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        note_without_metadata = note[(idx + YAML_END.length) .. -1]
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      end
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    end
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    if note_without_metadata.mb_chars.grapheme_length > MAX_NOTE_LENGTH
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      errors.add(:note, "can't be longer than 500 graphemes")
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    end
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  end
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  def normalize_domain
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    return if local?
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    self.domain = TagManager.instance.normalize_domain(domain)
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  end
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end
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