1 # Copyright (C) The Arvados Authors. All rights reserved.
3 # SPDX-License-Identifier: AGPL-3.0
5 require 'can_be_an_owner'
6 require 'refresh_permission_view'
8 class User < ArvadosModel
11 include CommonApiTemplate
13 extend CurrentApiClient
15 serialize :prefs, Hash
16 has_many :api_client_authorizations
19 with: /\A[A-Za-z][A-Za-z0-9]*\z/,
20 message: "must begin with a letter and contain only alphanumerics",
24 before_update :prevent_privilege_escalation
25 before_update :prevent_inactive_admin
26 before_update :verify_repositories_empty, :if => Proc.new { |user|
27 user.username.nil? and user.username_changed?
29 before_update :setup_on_activate
30 before_create :check_auto_admin
31 before_create :set_initial_username, :if => Proc.new { |user|
32 user.username.nil? and user.email
34 after_create :setup_on_activate
35 after_create :add_system_group_permission_link
36 after_create :invalidate_permissions_cache
37 after_create :auto_setup_new_user, :if => Proc.new { |user|
38 Rails.configuration.Users.AutoSetupNewUsers and
39 (user.uuid != system_user_uuid) and
40 (user.uuid != anonymous_user_uuid)
42 after_create :send_admin_notifications
43 after_update :send_profile_created_notification
44 after_update :sync_repository_names, :if => Proc.new { |user|
45 (user.uuid != system_user_uuid) and
46 user.username_changed? and
47 (not user.username_was.nil?)
50 has_many :authorized_keys, :foreign_key => :authorized_user_uuid, :primary_key => :uuid
51 has_many :repositories, foreign_key: :owner_uuid, primary_key: :uuid
53 default_scope { where('redirect_to_user_uuid is null') }
55 api_accessible :user, extend: :common do |t|
69 ALL_PERMISSIONS = {read: true, write: true, manage: true}
71 # Map numeric permission levels (see lib/create_permission_view.sql)
72 # back to read/write/manage flags.
76 {read: true, write: true},
77 {read: true, write: true, manage: true}]
80 "#{first_name} #{last_name}".strip
85 Rails.configuration.Users.NewUsersAreActive ||
86 self.groups_i_can(:read).select { |x| x.match(/-f+$/) }.first)
89 def groups_i_can(verb)
90 my_groups = self.group_permissions.select { |uuid, mask| mask[verb] }.keys
92 my_groups << anonymous_group_uuid
98 return true if is_admin
99 actions.each do |action, target|
101 if target.respond_to? :uuid
102 target_uuid = target.uuid
105 target = ArvadosModel.find_by_uuid(target_uuid)
108 next if target_uuid == self.uuid
109 next if (group_permissions[target_uuid] and
110 group_permissions[target_uuid][action])
111 if target.respond_to? :owner_uuid
112 next if target.owner_uuid == self.uuid
113 next if (group_permissions[target.owner_uuid] and
114 group_permissions[target.owner_uuid][action])
116 sufficient_perms = case action
120 ['can_manage', 'can_write']
122 ['can_manage', 'can_write', 'can_read']
124 # (Skip this kind of permission opportunity
125 # if action is an unknown permission type)
128 # Check permission links with head_uuid pointing directly at
129 # the target object. If target is a Group, this is redundant
130 # and will fail except [a] if permission caching is broken or
131 # [b] during a race condition, where a permission link has
133 if Link.where(link_class: 'permission',
134 name: sufficient_perms,
135 tail_uuid: groups_i_can(action) + [self.uuid],
136 head_uuid: target_uuid).any?
145 def self.invalidate_permissions_cache(async=false)
146 refresh_permission_view(async)
149 def invalidate_permissions_cache
150 User.invalidate_permissions_cache
153 # Return a hash of {user_uuid: group_perms}
154 def self.all_group_permissions
156 ActiveRecord::Base.connection.
157 exec_query("SELECT user_uuid, target_owner_uuid, perm_level, trashed
158 FROM #{PERMISSION_VIEW}
159 WHERE target_owner_uuid IS NOT NULL",
160 # "name" arg is a query label that appears in logs:
161 "all_group_permissions",
162 ).rows.each do |user_uuid, group_uuid, max_p_val, trashed|
163 all_perms[user_uuid] ||= {}
164 all_perms[user_uuid][group_uuid] = PERMS_FOR_VAL[max_p_val.to_i]
169 # Return a hash of {group_uuid: perm_hash} where perm_hash[:read]
170 # and perm_hash[:write] are true if this user can read and write
171 # objects owned by group_uuid.
172 def group_permissions
173 group_perms = {self.uuid => {:read => true, :write => true, :manage => true}}
174 ActiveRecord::Base.connection.
175 exec_query("SELECT target_owner_uuid, perm_level, trashed
176 FROM #{PERMISSION_VIEW}
178 AND target_owner_uuid IS NOT NULL",
179 # "name" arg is a query label that appears in logs:
180 "group_permissions for #{uuid}",
181 # "binds" arg is an array of [col_id, value] for '$1' vars:
183 ).rows.each do |group_uuid, max_p_val, trashed|
184 group_perms[group_uuid] = PERMS_FOR_VAL[max_p_val.to_i]
190 def setup(openid_prefix:, repo_name: nil, vm_uuid: nil)
191 oid_login_perm = create_oid_login_perm openid_prefix
192 repo_perm = create_user_repo_link repo_name
193 vm_login_perm = create_vm_login_permission_link(vm_uuid, username) if vm_uuid
194 group_perm = create_user_group_link
196 return [oid_login_perm, repo_perm, vm_login_perm, group_perm, self].compact
199 # delete user signatures, login, repo, and vm perms, and mark as inactive
201 # delete oid_login_perms for this user
202 Link.where(tail_uuid: self.email,
203 link_class: 'permission',
204 name: 'can_login').destroy_all
206 # delete repo_perms for this user
207 Link.where(tail_uuid: self.uuid,
208 link_class: 'permission',
209 name: 'can_manage').destroy_all
211 # delete vm_login_perms for this user
212 Link.where(tail_uuid: self.uuid,
213 link_class: 'permission',
214 name: 'can_login').destroy_all
216 # delete "All users" group read permissions for this user
217 group = Group.where(name: 'All users').select do |g|
218 g[:uuid].match(/-f+$/)
220 Link.where(tail_uuid: self.uuid,
221 head_uuid: group[:uuid],
222 link_class: 'permission',
223 name: 'can_read').destroy_all
225 # delete any signatures by this user
226 Link.where(link_class: 'signature',
227 tail_uuid: self.uuid).destroy_all
229 # delete user preferences (including profile)
232 # mark the user as inactive
233 self.is_active = false
237 def set_initial_username(requested: false)
238 if !requested.is_a?(String) || requested.empty?
239 email_parts = email.partition("@")
240 local_parts = email_parts.first.partition("+")
241 if email_parts.any?(&:empty?)
243 elsif not local_parts.first.empty?
244 requested = local_parts.first
246 requested = email_parts.first
249 requested.sub!(/^[^A-Za-z]+/, "")
250 requested.gsub!(/[^A-Za-z0-9]/, "")
251 unless requested.empty?
252 self.username = find_usable_username_from(requested)
256 def update_uuid(new_uuid:)
257 if !current_user.andand.is_admin
258 raise PermissionDeniedError
260 if uuid == system_user_uuid || uuid == anonymous_user_uuid
261 raise "update_uuid cannot update system accounts"
263 if self.class != self.class.resource_class_for_uuid(new_uuid)
264 raise "invalid new_uuid #{new_uuid.inspect}"
266 transaction(requires_new: true) do
270 save!(validate: false)
271 change_all_uuid_refs(old_uuid: old_uuid, new_uuid: new_uuid)
275 # Move this user's (i.e., self's) owned items into new_owner_uuid.
276 # Also redirect future uses of this account to
277 # redirect_to_user_uuid, i.e., when a caller authenticates to this
278 # account in the future, the account redirect_to_user_uuid account
279 # will be used instead.
281 # current_user must have admin privileges, i.e., the caller is
282 # responsible for checking permission to do this.
283 def merge(new_owner_uuid:, redirect_to_user_uuid:)
284 raise PermissionDeniedError if !current_user.andand.is_admin
285 raise "not implemented" if !redirect_to_user_uuid
286 transaction(requires_new: true) do
288 raise "cannot merge an already merged user" if self.redirect_to_user_uuid
290 new_user = User.where(uuid: redirect_to_user_uuid).first
291 raise "user does not exist" if !new_user
292 raise "cannot merge to an already merged user" if new_user.redirect_to_user_uuid
294 # Existing API tokens are updated to authenticate to the new
296 ApiClientAuthorization.
298 update_all(user_id: new_user.id)
300 # References to the old user UUID in the context of a user ID
301 # (rather than a "home project" in the project hierarchy) are
302 # updated to point to the new user.
304 [AuthorizedKey, :owner_uuid],
305 [AuthorizedKey, :authorized_user_uuid],
306 [Repository, :owner_uuid],
310 ].each do |klass, column|
311 klass.where(column => uuid).update_all(column => new_user.uuid)
314 # References to the merged user's "home project" are updated to
315 # point to new_owner_uuid.
316 ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |klass|
317 next if [ApiClientAuthorization,
321 Repository].include?(klass)
322 next if !klass.columns.collect(&:name).include?('owner_uuid')
323 klass.where(owner_uuid: uuid).update_all(owner_uuid: new_owner_uuid)
326 update_attributes!(redirect_to_user_uuid: new_user.uuid)
327 invalidate_permissions_cache
334 while (uuid = user.redirect_to_user_uuid)
335 user = User.unscoped.find_by_uuid(uuid)
337 raise Exception.new("user uuid #{user.uuid} redirects to nonexistent uuid #{uuid}")
341 raise "Starting from #{self.uuid} redirect_to_user_uuid exceeded maximum number of redirects"
347 def self.register info
348 # login info expected fields, all can be optional but at minimum
349 # must supply either 'identity_url' or 'email'
358 info = info.with_indifferent_access
363 identity_url = info['identity_url']
365 if identity_url && identity_url.length > 0
366 # Only local users can create sessions, hence uuid_like_pattern
368 user = User.unscoped.where('identity_url = ? and uuid like ?',
370 User.uuid_like_pattern).first
371 primary_user = user.redirects_to if user
375 # identity url is unset or didn't find matching record.
376 emails = [info['email']] + (info['alternate_emails'] || [])
377 emails.select! {|em| !em.nil? && !em.empty?}
379 User.unscoped.where('email in (?) and uuid like ?',
381 User.uuid_like_pattern).each do |user|
383 primary_user = user.redirects_to
384 elsif primary_user.uuid != user.redirects_to.uuid
385 raise "Ambigious email address, directs to both #{primary_user.uuid} and #{user.redirects_to.uuid}"
391 # New user registration
392 primary_user = User.new(:owner_uuid => system_user_uuid,
394 :is_active => Rails.configuration.Users.NewUsersAreActive)
396 primary_user.set_initial_username(requested: info['username']) if info['username']
397 primary_user.identity_url = info['identity_url'] if identity_url
400 primary_user.email = info['email'] if info['email']
401 primary_user.first_name = info['first_name'] if info['first_name']
402 primary_user.last_name = info['last_name'] if info['last_name']
404 if (!primary_user.email or primary_user.email.empty?) and (!primary_user.identity_url or primary_user.identity_url.empty?)
405 raise "Must have supply at least one of 'email' or 'identity_url' to User.register"
408 act_as_system_user do
417 def change_all_uuid_refs(old_uuid:, new_uuid:)
418 ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |klass|
419 klass.columns.each do |col|
420 if col.name.end_with?('_uuid')
421 column = col.name.to_sym
422 klass.where(column => old_uuid).update_all(column => new_uuid)
428 def ensure_ownership_path_leads_to_user
432 def permission_to_update
433 if username_changed? || redirect_to_user_uuid_changed? || email_changed?
434 current_user.andand.is_admin
436 # users must be able to update themselves (even if they are
437 # inactive) in order to create sessions
438 self == current_user or super
442 def permission_to_create
443 current_user.andand.is_admin or
444 (self == current_user &&
445 self.redirect_to_user_uuid.nil? &&
446 self.is_active == Rails.configuration.Users.NewUsersAreActive)
450 return if self.uuid.end_with?('anonymouspublic')
451 if (User.where("email = ?",self.email).where(:is_admin => true).count == 0 and
452 !Rails.configuration.Users.AutoAdminUserWithEmail.empty? and self.email == Rails.configuration.Users["AutoAdminUserWithEmail"]) or
453 (User.where("uuid not like '%-000000000000000'").where(:is_admin => true).count == 0 and
454 Rails.configuration.Users.AutoAdminFirstUser)
456 self.is_active = true
460 def find_usable_username_from(basename)
461 # If "basename" is a usable username, return that.
462 # Otherwise, find a unique username "basenameN", where N is the
463 # smallest integer greater than 1, and return that.
464 # Return nil if a unique username can't be found after reasonable
466 quoted_name = self.class.connection.quote_string(basename)
467 next_username = basename
469 while Rails.configuration.Users.AutoSetupUsernameBlacklist[next_username]
471 next_username = "%s%i" % [basename, next_suffix]
473 0.upto(6).each do |suffix_len|
474 pattern = "%s%s" % [quoted_name, "_" * suffix_len]
476 where("username like '#{pattern}'").
478 order('username asc').
480 if other_user.username > next_username
482 elsif other_user.username == next_username
484 next_username = "%s%i" % [basename, next_suffix]
487 return next_username if (next_username.size <= pattern.size)
492 def prevent_privilege_escalation
493 if current_user.andand.is_admin
496 if self.is_active_changed?
497 if self.is_active != self.is_active_was
498 logger.warn "User #{current_user.uuid} tried to change is_active from #{self.is_active_was} to #{self.is_active} for #{self.uuid}"
499 self.is_active = self.is_active_was
502 if self.is_admin_changed?
503 if self.is_admin != self.is_admin_was
504 logger.warn "User #{current_user.uuid} tried to change is_admin from #{self.is_admin_was} to #{self.is_admin} for #{self.uuid}"
505 self.is_admin = self.is_admin_was
511 def prevent_inactive_admin
512 if self.is_admin and not self.is_active
513 # There is no known use case for the strange set of permissions
514 # that would result from this change. It's safest to assume it's
515 # a mistake and disallow it outright.
516 raise "Admin users cannot be inactive"
521 def search_permissions(start, graph, merged={}, upstream_mask=nil, upstream_path={})
522 nextpaths = graph[start]
523 return merged if !nextpaths
524 return merged if upstream_path.has_key? start
525 upstream_path[start] = true
526 upstream_mask ||= ALL_PERMISSIONS
527 nextpaths.each do |head, mask|
530 merged[head][k] ||= v if upstream_mask[k]
532 search_permissions(head, graph, merged, upstream_mask.select { |k,v| v && merged[head][k] }, upstream_path)
534 upstream_path.delete start
538 def create_oid_login_perm(openid_prefix)
539 # Check oid_login_perm
540 oid_login_perms = Link.where(tail_uuid: self.email,
541 head_uuid: self.uuid,
542 link_class: 'permission',
545 if !oid_login_perms.any?
546 # create openid login permission
547 oid_login_perm = Link.create!(link_class: 'permission',
549 tail_uuid: self.email,
550 head_uuid: self.uuid,
552 "identity_url_prefix" => openid_prefix,
554 logger.info { "openid login permission: " + oid_login_perm[:uuid] }
556 oid_login_perm = oid_login_perms.first
559 return oid_login_perm
562 def create_user_repo_link(repo_name)
563 # repo_name is optional
565 logger.warn ("Repository name not given for #{self.uuid}.")
569 repo = Repository.where(owner_uuid: uuid, name: repo_name).first_or_create!
570 logger.info { "repo uuid: " + repo[:uuid] }
571 repo_perm = Link.where(tail_uuid: uuid, head_uuid: repo.uuid,
572 link_class: "permission",
573 name: "can_manage").first_or_create!
574 logger.info { "repo permission: " + repo_perm[:uuid] }
578 # create login permission for the given vm_uuid, if it does not already exist
579 def create_vm_login_permission_link(vm_uuid, repo_name)
580 # vm uuid is optional
581 return if vm_uuid == ""
583 vm = VirtualMachine.where(uuid: vm_uuid).first
585 logger.warn "Could not find virtual machine for #{vm_uuid.inspect}"
586 raise "No vm found for #{vm_uuid}"
589 logger.info { "vm uuid: " + vm[:uuid] }
591 tail_uuid: uuid, head_uuid: vm.uuid,
592 link_class: "permission", name: "can_login",
597 select { |link| link.properties["username"] == repo_name }.
601 create(login_attrs.merge(properties: {"username" => repo_name}))
603 logger.info { "login permission: " + login_perm[:uuid] }
607 # add the user to the 'All users' group
608 def create_user_group_link
609 return (Link.where(tail_uuid: self.uuid,
610 head_uuid: all_users_group[:uuid],
611 link_class: 'permission',
612 name: 'can_read').first or
613 Link.create(tail_uuid: self.uuid,
614 head_uuid: all_users_group[:uuid],
615 link_class: 'permission',
619 # Give the special "System group" permission to manage this user and
620 # all of this user's stuff.
621 def add_system_group_permission_link
622 return true if uuid == system_user_uuid
623 act_as_system_user do
624 Link.create(link_class: 'permission',
626 tail_uuid: system_group_uuid,
627 head_uuid: self.uuid)
631 # Send admin notifications
632 def send_admin_notifications
633 AdminNotifier.new_user(self).deliver_now
634 if not self.is_active then
635 AdminNotifier.new_inactive_user(self).deliver_now
639 # Automatically setup if is_active flag turns on
640 def setup_on_activate
641 return if [system_user_uuid, anonymous_user_uuid].include?(self.uuid)
642 if is_active && (new_record? || is_active_changed?)
643 setup(openid_prefix: Rails.configuration.default_openid_prefix)
647 # Automatically setup new user during creation
648 def auto_setup_new_user
649 setup(openid_prefix: Rails.configuration.default_openid_prefix)
651 create_vm_login_permission_link(Rails.configuration.Users.AutoSetupNewUsersWithVmUUID,
653 repo_name = "#{username}/#{username}"
654 if Rails.configuration.Users.AutoSetupNewUsersWithRepository and
655 Repository.where(name: repo_name).first.nil?
656 repo = Repository.create!(name: repo_name, owner_uuid: uuid)
657 Link.create!(tail_uuid: uuid, head_uuid: repo.uuid,
658 link_class: "permission", name: "can_manage")
663 # Send notification if the user saved profile for the first time
664 def send_profile_created_notification
665 if self.prefs_changed?
666 if self.prefs_was.andand.empty? || !self.prefs_was.andand['profile']
667 profile_notification_address = Rails.configuration.Users.UserProfileNotificationAddress
668 ProfileNotifier.profile_created(self, profile_notification_address).deliver_now if profile_notification_address and !profile_notification_address.empty?
673 def verify_repositories_empty
674 unless repositories.first.nil?
675 errors.add(:username, "can't be unset when the user owns repositories")
680 def sync_repository_names
681 old_name_re = /^#{Regexp.escape(username_was)}\//
682 name_sub = "#{username}/"
683 repositories.find_each do |repo|
684 repo.name = repo.name.sub(old_name_re, name_sub)