about summary refs log tree commit diff
path: root/app/models/account.rb
blob: cae82da1627bbc39fe4a1767385f0d233fe7cda2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
# frozen_string_literal: true
# == Schema Information
#
# Table name: accounts
#
#  id                      :bigint(8)        not null, primary key
#  username                :string           default(""), not null
#  domain                  :string
#  secret                  :string           default(""), not null
#  private_key             :text
#  public_key              :text             default(""), not null
#  remote_url              :string           default(""), not null
#  salmon_url              :string           default(""), not null
#  hub_url                 :string           default(""), not null
#  created_at              :datetime         not null
#  updated_at              :datetime         not null
#  note                    :text             default(""), not null
#  display_name            :string           default(""), not null
#  uri                     :string           default(""), not null
#  url                     :string
#  avatar_file_name        :string
#  avatar_content_type     :string
#  avatar_file_size        :integer
#  avatar_updated_at       :datetime
#  header_file_name        :string
#  header_content_type     :string
#  header_file_size        :integer
#  header_updated_at       :datetime
#  avatar_remote_url       :string
#  subscription_expires_at :datetime
#  locked                  :boolean          default(FALSE), not null
#  header_remote_url       :string           default(""), not null
#  last_webfingered_at     :datetime
#  inbox_url               :string           default(""), not null
#  outbox_url              :string           default(""), not null
#  shared_inbox_url        :string           default(""), not null
#  followers_url           :string           default(""), not null
#  protocol                :integer          default("ostatus"), not null
#  memorial                :boolean          default(FALSE), not null
#  moved_to_account_id     :bigint(8)
#  featured_collection_url :string
#  fields                  :jsonb
#  actor_type              :string
#  discoverable            :boolean
#  also_known_as           :string           is an Array
#  silenced_at             :datetime
#  suspended_at            :datetime
#  trust_level             :integer
#

class Account < ApplicationRecord
  USERNAME_RE = /[a-z0-9_]+([a-z0-9_\.-]+[a-z0-9_]+)?/i
  MENTION_RE  = /(?<=^|[^\/[:word:]])@((#{USERNAME_RE})(?:@[a-z0-9\.\-]+[a-z0-9]+)?)/i

  include AccountAssociations
  include AccountAvatar
  include AccountFinderConcern
  include AccountHeader
  include AccountInteractions
  include Attachmentable
  include Paginable
  include AccountCounters
  include DomainNormalizable

  TRUST_LEVELS = {
    untrusted: 0,
    trusted: 1,
  }.freeze

  enum protocol: [:ostatus, :activitypub]

  validates :username, presence: true

  # Remote user validations
  validates :username, uniqueness: { scope: :domain, case_sensitive: true }, if: -> { !local? && will_save_change_to_username? }
  validates :username, format: { with: /\A#{USERNAME_RE}\z/i }, if: -> { !local? && will_save_change_to_username? }

  # Local user validations
  validates :username, format: { with: /\A[a-z0-9_]+\z/i }, length: { maximum: 30 }, if: -> { local? && will_save_change_to_username? && actor_type != 'Application' }
  validates_with UniqueUsernameValidator, if: -> { local? && will_save_change_to_username? }
  validates_with UnreservedUsernameValidator, if: -> { local? && will_save_change_to_username? }
  validates :display_name, length: { maximum: 30 }, if: -> { local? && will_save_change_to_display_name? }
  validates :note, note_length: { maximum: 500 }, if: -> { local? && will_save_change_to_note? }
  validates :fields, length: { maximum: 4 }, if: -> { local? && will_save_change_to_fields? }

  scope :remote, -> { where.not(domain: nil) }
  scope :local, -> { where(domain: nil) }
  scope :expiring, ->(time) { remote.where.not(subscription_expires_at: nil).where('subscription_expires_at < ?', time) }
  scope :partitioned, -> { order(Arel.sql('row_number() over (partition by domain)')) }
  scope :silenced, -> { where.not(silenced_at: nil) }
  scope :suspended, -> { where.not(suspended_at: nil) }
  scope :without_suspended, -> { where(suspended_at: nil) }
  scope :without_silenced, -> { where(silenced_at: nil) }
  scope :recent, -> { reorder(id: :desc) }
  scope :bots, -> { where(actor_type: %w(Application Service)) }
  scope :alphabetic, -> { order(domain: :asc, username: :asc) }
  scope :by_domain_accounts, -> { group(:domain).select(:domain, 'COUNT(*) AS accounts_count').order('accounts_count desc') }
  scope :matches_username, ->(value) { where(arel_table[:username].matches("#{value}%")) }
  scope :matches_display_name, ->(value) { where(arel_table[:display_name].matches("#{value}%")) }
  scope :matches_domain, ->(value) { where(arel_table[:domain].matches("%#{value}%")) }
  scope :searchable, -> { without_suspended.where(moved_to_account_id: nil) }
  scope :discoverable, -> { searchable.without_silenced.where(discoverable: true).left_outer_joins(:account_stat) }
  scope :tagged_with, ->(tag) { joins(:accounts_tags).where(accounts_tags: { tag_id: tag }) }
  scope :by_recent_status, -> { order(Arel.sql('(case when account_stats.last_status_at is null then 1 else 0 end) asc, account_stats.last_status_at desc, accounts.id desc')) }
  scope :popular, -> { order('account_stats.followers_count desc') }
  scope :by_domain_and_subdomains, ->(domain) { where(domain: domain).or(where(arel_table[:domain].matches('%.' + domain))) }
  scope :not_excluded_by_account, ->(account) { where.not(id: account.excluded_from_timeline_account_ids) }
  scope :not_domain_blocked_by_account, ->(account) { where(arel_table[:domain].eq(nil).or(arel_table[:domain].not_in(account.excluded_from_timeline_domains))) }

  delegate :email,
           :unconfirmed_email,
           :current_sign_in_ip,
           :current_sign_in_at,
           :confirmed?,
           :approved?,
           :pending?,
           :disabled?,
           :unconfirmed_or_pending?,
           :role,
           :admin?,
           :moderator?,
           :staff?,
           :locale,
           :hides_network?,
           :shows_application?,
           to: :user,
           prefix: true,
           allow_nil: true

  delegate :chosen_languages, to: :user, prefix: false, allow_nil: true

  update_index('accounts#account', :self)

  def local?
    domain.nil?
  end

  def moved?
    moved_to_account_id.present?
  end

  def bot?
    %w(Application Service).include? actor_type
  end

  def instance_actor?
    id == -99
  end

  alias bot bot?

  def bot=(val)
    self.actor_type = ActiveModel::Type::Boolean.new.cast(val) ? 'Service' : 'Person'
  end

  def acct
    local? ? username : "#{username}@#{domain}"
  end

  def local_username_and_domain
    "#{username}@#{Rails.configuration.x.local_domain}"
  end

  def local_followers_count
    Follow.where(target_account_id: id).count
  end

  def to_webfinger_s
    "acct:#{local_username_and_domain}"
  end

  def subscribed?
    subscription_expires_at.present?
  end

  def searchable?
    !(suspended? || moved?)
  end

  def possibly_stale?
    last_webfingered_at.nil? || last_webfingered_at <= 1.day.ago
  end

  def trust_level
    self[:trust_level] || 0
  end

  def refresh!
    ResolveAccountService.new.call(acct) unless local?
  end

  def silenced?
    silenced_at.present?
  end

  def silence!(date = Time.now.utc)
    update!(silenced_at: date)
  end

  def unsilence!
    update!(silenced_at: nil)
  end

  def suspended?
    suspended_at.present?
  end

  def suspend!(date = Time.now.utc)
    transaction do
      user&.disable! if local?
      update!(suspended_at: date)
    end
  end

  def unsuspend!
    transaction do
      user&.enable! if local?
      update!(suspended_at: nil)
    end
  end

  def memorialize!
    transaction do
      user&.disable! if local?
      update!(memorial: true)
    end
  end

  def sign?
    true
  end

  def keypair
    @keypair ||= OpenSSL::PKey::RSA.new(private_key || public_key)
  end

  def tags_as_strings=(tag_names)
    hashtags_map = Tag.find_or_create_by_names(tag_names).each_with_object({}) { |tag, h| h[tag.name] = tag }

    # Remove hashtags that are to be deleted
    tags.each do |tag|
      if hashtags_map.key?(tag.name)
        hashtags_map.delete(tag.name)
      else
        transaction do
          tags.delete(tag)
          tag.decrement_count!(:accounts_count)
        end
      end
    end

    # Add hashtags that were so far missing
    hashtags_map.each_value do |tag|
      transaction do
        tags << tag
        tag.increment_count!(:accounts_count)
      end
    end
  end

  def also_known_as
    self[:also_known_as] || []
  end

  def fields
    (self[:fields] || []).map { |f| Field.new(self, f) }
  end

  def fields_attributes=(attributes)
    fields     = []
    old_fields = self[:fields] || []
    old_fields = [] if old_fields.is_a?(Hash)

    if attributes.is_a?(Hash)
      attributes.each_value do |attr|
        next if attr[:name].blank?

        previous = old_fields.find { |item| item['value'] == attr[:value] }

        if previous && previous['verified_at'].present?
          attr[:verified_at] = previous['verified_at']
        end

        fields << attr
      end
    end

    self[:fields] = fields
  end

  DEFAULT_FIELDS_SIZE = 4

  def build_fields
    return if fields.size >= DEFAULT_FIELDS_SIZE

    tmp = self[:fields] || []
    tmp = [] if tmp.is_a?(Hash)

    (DEFAULT_FIELDS_SIZE - tmp.size).times do
      tmp << { name: '', value: '' }
    end

    self.fields = tmp
  end

  def subscription(webhook_url)
    @subscription ||= OStatus2::Subscription.new(remote_url, secret: secret, webhook: webhook_url, hub: hub_url)
  end

  def save_with_optional_media!
    save!
  rescue ActiveRecord::RecordInvalid
    self.avatar = nil
    self.header = nil

    save!
  end

  def object_type
    :person
  end

  def to_param
    username
  end

  def excluded_from_timeline_account_ids
    Rails.cache.fetch("exclude_account_ids_for:#{id}") { blocking.pluck(:target_account_id) + blocked_by.pluck(:account_id) + muting.pluck(:target_account_id) }
  end

  def excluded_from_timeline_domains
    Rails.cache.fetch("exclude_domains_for:#{id}") { domain_blocks.pluck(:domain) }
  end

  def preferred_inbox_url
    shared_inbox_url.presence || inbox_url
  end

  class Field < ActiveModelSerializers::Model
    attributes :name, :value, :verified_at, :account, :errors

    def initialize(account, attributes)
      @account     = account
      @attributes  = attributes
      @name        = attributes['name'].strip[0, string_limit]
      @value       = attributes['value'].strip[0, string_limit]
      @verified_at = attributes['verified_at']&.to_datetime
      @errors      = {}
    end

    def verified?
      verified_at.present?
    end

    def value_for_verification
      @value_for_verification ||= begin
        if account.local?
          value
        else
          ActionController::Base.helpers.strip_tags(value)
        end
      end
    end

    def verifiable?
      value_for_verification.present? && value_for_verification.start_with?('http://', 'https://')
    end

    def mark_verified!
      @verified_at = Time.now.utc
      @attributes['verified_at'] = @verified_at
    end

    def to_h
      { name: @name, value: @value, verified_at: @verified_at }
    end

    private

    def string_limit
      if account.local?
        255
      else
        2047
      end
    end
  end

  class << self
    def readonly_attributes
      super - %w(statuses_count following_count followers_count)
    end

    def domains
      reorder(nil).pluck(Arel.sql('distinct accounts.domain'))
    end

    def inboxes
      urls = reorder(nil).where(protocol: :activitypub).pluck(Arel.sql("distinct coalesce(nullif(accounts.shared_inbox_url, ''), accounts.inbox_url)"))
      DeliveryFailureTracker.filter(urls)
    end

    def search_for(terms, limit = 10, offset = 0)
      textsearch, query = generate_query_for_search(terms)

      sql = <<-SQL.squish
        SELECT
          accounts.*,
          ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
        FROM accounts
        WHERE #{query} @@ #{textsearch}
          AND accounts.suspended_at IS NULL
          AND accounts.moved_to_account_id IS NULL
        ORDER BY rank DESC
        LIMIT ? OFFSET ?
      SQL

      records = find_by_sql([sql, limit, offset])
      ActiveRecord::Associations::Preloader.new.preload(records, :account_stat)
      records
    end

    def advanced_search_for(terms, account, limit = 10, following = false, offset = 0)
      textsearch, query = generate_query_for_search(terms)

      if following
        sql = <<-SQL.squish
          WITH first_degree AS (
            SELECT target_account_id
            FROM follows
            WHERE account_id = ?
            UNION ALL
            SELECT ?
          )
          SELECT
            accounts.*,
            (count(f.id) + 1) * ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
          FROM accounts
          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 = ?)
          WHERE accounts.id IN (SELECT * FROM first_degree)
            AND #{query} @@ #{textsearch}
            AND accounts.suspended_at IS NULL
            AND accounts.moved_to_account_id IS NULL
          GROUP BY accounts.id
          ORDER BY rank DESC
          LIMIT ? OFFSET ?
        SQL

        records = find_by_sql([sql, account.id, account.id, account.id, account.id, limit, offset])
      else
        sql = <<-SQL.squish
          SELECT
            accounts.*,
            (count(f.id) + 1) * ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
          FROM accounts
          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 = ?)
          WHERE #{query} @@ #{textsearch}
            AND accounts.suspended_at IS NULL
            AND accounts.moved_to_account_id IS NULL
          GROUP BY accounts.id
          ORDER BY rank DESC
          LIMIT ? OFFSET ?
        SQL

        records = find_by_sql([sql, account.id, account.id, limit, offset])
      end

      ActiveRecord::Associations::Preloader.new.preload(records, :account_stat)
      records
    end

    private

    def generate_query_for_search(terms)
      terms      = Arel.sql(connection.quote(terms.gsub(/['?\\:]/, ' ')))
      textsearch = "(setweight(to_tsvector('simple', accounts.display_name), 'A') || setweight(to_tsvector('simple', accounts.username), 'B') || setweight(to_tsvector('simple', coalesce(accounts.domain, '')), 'C'))"
      query      = "to_tsquery('simple', ''' ' || #{terms} || ' ''' || ':*')"

      [textsearch, query]
    end
  end

  def emojis
    @emojis ||= CustomEmoji.from_text(emojifiable_text, domain)
  end

  before_create :generate_keys
  before_validation :prepare_contents, if: :local?
  before_validation :prepare_username, on: :create
  before_destroy :clean_feed_manager

  private

  def prepare_contents
    display_name&.strip!
    note&.strip!
  end

  def prepare_username
    username&.squish!
  end

  def generate_keys
    return unless local? && private_key.blank? && public_key.blank?

    keypair = OpenSSL::PKey::RSA.new(2048)
    self.private_key = keypair.to_pem
    self.public_key  = keypair.public_key.to_pem
  end

  def normalize_domain
    return if local?

    super
  end

  def emojifiable_text
    [note, display_name, fields.map(&:name), fields.map(&:value)].join(' ')
  end

  def clean_feed_manager
    reblog_key       = FeedManager.instance.key(:home, id, 'reblogs')
    reblogged_id_set = Redis.current.zrange(reblog_key, 0, -1)

    Redis.current.pipelined do
      Redis.current.del(FeedManager.instance.key(:home, id))
      Redis.current.del(reblog_key)

      reblogged_id_set.each do |reblogged_id|
        reblog_set_key = FeedManager.instance.key(:home, id, "reblogs:#{reblogged_id}")
        Redis.current.del(reblog_set_key)
      end
    end
  end
end