1 require 'can_be_an_owner'
3 class User < ArvadosModel
6 include CommonApiTemplate
10 has_many :api_client_authorizations
11 before_update :prevent_privilege_escalation
12 before_update :prevent_inactive_admin
13 before_create :check_auto_admin
14 after_create :add_system_group_permission_link
15 after_create :send_admin_notifications
17 has_many :authorized_keys, :foreign_key => :authorized_user_uuid, :primary_key => :uuid
19 api_accessible :user, extend: :common do |t|
31 ALL_PERMISSIONS = {read: true, write: true, manage: true}
34 "#{first_name} #{last_name}".strip
39 Rails.configuration.new_users_are_active ||
40 self.groups_i_can(:read).select { |x| x.match /-f+$/ }.first)
43 def groups_i_can(verb)
44 self.group_permissions.select { |uuid, mask| mask[verb] }.keys
48 return true if is_admin
49 actions.each do |action, target|
51 if target.respond_to? :uuid
52 target_uuid = target.uuid
54 next if target_uuid == self.uuid
55 next if (group_permissions[target_uuid] and
56 group_permissions[target_uuid][action])
57 if target.respond_to? :owner_uuid
58 next if target.owner_uuid == self.uuid
59 next if (group_permissions[target.owner_uuid] and
60 group_permissions[target.owner_uuid][action])
67 def self.invalidate_permissions_cache
68 Rails.cache.delete_matched(/^groups_for_user_/)
71 # Return a hash of {group_uuid: perm_hash} where perm_hash[:read]
72 # and perm_hash[:write] are true if this user can read and write
73 # objects owned by group_uuid.
75 Rails.cache.fetch "groups_for_user_#{self.uuid}" do
77 todo = {self.uuid => true}
80 lookup_uuids = todo.keys
81 lookup_uuids.each do |uuid| done[uuid] = true end
84 Group.where('owner_uuid in (?)', lookup_uuids).each do |group|
85 newgroups << [group.owner_uuid, group.uuid, 'can_manage']
87 Link.where('tail_uuid in (?) and link_class = ? and (head_uuid like ? or head_uuid like ?)',
90 Group.uuid_like_pattern,
91 User.uuid_like_pattern).each do |link|
92 newgroups << [link.tail_uuid, link.head_uuid, link.name]
94 newgroups.each do |tail_uuid, head_uuid, perm_name|
95 unless done.has_key? head_uuid
96 todo[head_uuid] = true
101 link_permissions = {read:true}
103 link_permissions = {read:true,write:true}
105 link_permissions = ALL_PERMISSIONS
107 permissions_from[tail_uuid] ||= {}
108 permissions_from[tail_uuid][head_uuid] ||= {}
109 link_permissions.each do |k,v|
110 permissions_from[tail_uuid][head_uuid][k] ||= v
114 search_permissions(self.uuid, permissions_from)
118 def self.setup(user, openid_prefix, repo_name=nil, vm_uuid=nil)
119 return user.setup_repo_vm_links(repo_name, vm_uuid, openid_prefix)
123 def setup_repo_vm_links(repo_name, vm_uuid, openid_prefix)
124 oid_login_perm = create_oid_login_perm openid_prefix
125 repo_perm = create_user_repo_link repo_name
126 vm_login_perm = create_vm_login_permission_link vm_uuid, repo_name
127 group_perm = create_user_group_link
129 return [oid_login_perm, repo_perm, vm_login_perm, group_perm, self].compact
132 # delete user signatures, login, repo, and vm perms, and mark as inactive
134 # delete oid_login_perms for this user
135 oid_login_perms = Link.where(tail_uuid: self.email,
136 link_class: 'permission',
138 oid_login_perms.each do |perm|
142 # delete repo_perms for this user
143 repo_perms = Link.where(tail_uuid: self.uuid,
144 link_class: 'permission',
146 repo_perms.each do |perm|
150 # delete vm_login_perms for this user
151 vm_login_perms = Link.where(tail_uuid: self.uuid,
152 link_class: 'permission',
154 vm_login_perms.each do |perm|
158 # delete "All users' group read permissions for this user
159 group = Group.where(name: 'All users').select do |g|
160 g[:uuid].match /-f+$/
162 group_perms = Link.where(tail_uuid: self.uuid,
163 head_uuid: group[:uuid],
164 link_class: 'permission',
166 group_perms.each do |perm|
170 # delete any signatures by this user
171 signed_uuids = Link.where(link_class: 'signature',
172 tail_uuid: self.uuid)
173 signed_uuids.each do |sign|
177 # mark the user as inactive
178 self.is_active = false
182 def owns? object_uuid
183 return User.find_user_owning(object_uuid).andand.uuid == uuid
186 def can_manage? object_uuid
188 owns?(object_uuid) or
189 has_permission?(:can_manage, object_uuid)
194 # Returns the first User found in the ownership path for obj_uuid.
195 # If obj_uuid is not owned by any user, returns nil.
197 # TODO(twp): this code largely stolen from
198 # ArvadosModel::ensure_ownership_path_leads_to_user. See if we can
199 # refactor these methods to share more code.
201 def self.find_user_owning obj_uuid
202 uuid_in_path = {obj_uuid => true}
203 # Walk up the owner_uuid chain for obj_uuid until one of these
205 # - the owner_uuid belongs to the User class
206 # - no owner_uuid is found (no User owns this object)
207 # - we discover an ownership cycle (a fatal consistency error)
210 while (owner_class = ArvadosModel.resource_class_for_uuid(x)) != User
212 if !owner_class.respond_to? :find_by_uuid
213 raise ActiveRecord::RecordNotFound.new
215 x = owner_class.find_by_uuid(x).owner_uuid
217 rescue ActiveRecord::RecordNotFound => e
218 # errors.add :owner_uuid, "is not owned by any user: #{e}"
221 # If there is an ownership cycle, we can conclude that
222 # no User owns this object.
226 uuid_in_path[x] = true
228 return owner_class.find_by_uuid(x)
231 def ensure_ownership_path_leads_to_user
235 def permission_to_update
236 # users must be able to update themselves (even if they are
237 # inactive) in order to create sessions
238 self == current_user or super
241 def permission_to_create
242 current_user.andand.is_admin or
243 (self == current_user and
244 self.is_active == Rails.configuration.new_users_are_active)
248 if User.where("uuid not like '%-000000000000000'").where(:is_admin => true).count == 0 and Rails.configuration.auto_admin_user
249 if current_user.email == Rails.configuration.auto_admin_user
251 self.is_active = true
256 def prevent_privilege_escalation
257 if current_user.andand.is_admin
260 if self.is_active_changed?
261 if self.is_active != self.is_active_was
262 logger.warn "User #{current_user.uuid} tried to change is_active from #{self.is_admin_was} to #{self.is_admin} for #{self.uuid}"
263 self.is_active = self.is_active_was
266 if self.is_admin_changed?
267 if self.is_admin != self.is_admin_was
268 logger.warn "User #{current_user.uuid} tried to change is_admin from #{self.is_admin_was} to #{self.is_admin} for #{self.uuid}"
269 self.is_admin = self.is_admin_was
275 def prevent_inactive_admin
276 if self.is_admin and not self.is_active
277 # There is no known use case for the strange set of permissions
278 # that would result from this change. It's safest to assume it's
279 # a mistake and disallow it outright.
280 raise "Admin users cannot be inactive"
285 def search_permissions(start, graph, merged={}, upstream_mask=nil, upstream_path={})
286 nextpaths = graph[start]
287 return merged if !nextpaths
288 return merged if upstream_path.has_key? start
289 upstream_path[start] = true
290 upstream_mask ||= ALL_PERMISSIONS
291 nextpaths.each do |head, mask|
294 merged[head][k] ||= v if upstream_mask[k]
296 search_permissions(head, graph, merged, upstream_mask.select { |k,v| v && merged[head][k] }, upstream_path)
298 upstream_path.delete start
302 def create_oid_login_perm (openid_prefix)
303 login_perm_props = { "identity_url_prefix" => openid_prefix}
305 # Check oid_login_perm
306 oid_login_perms = Link.where(tail_uuid: self.email,
307 link_class: 'permission',
308 name: 'can_login').where("head_uuid = ?", self.uuid)
310 if !oid_login_perms.any?
311 # create openid login permission
312 oid_login_perm = Link.create(link_class: 'permission',
314 tail_uuid: self.email,
315 head_uuid: self.uuid,
316 properties: login_perm_props
318 logger.info { "openid login permission: " + oid_login_perm[:uuid] }
320 oid_login_perm = oid_login_perms.first
323 return oid_login_perm
326 def create_user_repo_link(repo_name)
327 # repo_name is optional
329 logger.warn ("Repository name not given for #{self.uuid}.")
333 # Check for an existing repository with the same name we're about to use.
334 repo = Repository.where(name: repo_name).first
337 logger.warn "Repository exists for #{repo_name}: #{repo[:uuid]}."
339 # Look for existing repository access for this repo
340 repo_perms = Link.where(tail_uuid: self.uuid,
341 head_uuid: repo[:uuid],
342 link_class: 'permission',
345 logger.warn "User already has repository access " +
346 repo_perms.collect { |p| p[:uuid] }.inspect
347 return repo_perms.first
351 # create repo, if does not already exist
352 repo ||= Repository.create(name: repo_name)
353 logger.info { "repo uuid: " + repo[:uuid] }
355 repo_perm = Link.create(tail_uuid: self.uuid,
356 head_uuid: repo[:uuid],
357 link_class: 'permission',
359 logger.info { "repo permission: " + repo_perm[:uuid] }
363 # create login permission for the given vm_uuid, if it does not already exist
364 def create_vm_login_permission_link(vm_uuid, repo_name)
367 # vm uuid is optional
369 vm = VirtualMachine.where(uuid: vm_uuid).first
372 logger.warn "Could not find virtual machine for #{vm_uuid.inspect}"
373 raise "No vm found for #{vm_uuid}"
379 logger.info { "vm uuid: " + vm[:uuid] }
381 login_perms = Link.where(tail_uuid: self.uuid,
382 head_uuid: vm[:uuid],
383 link_class: 'permission',
387 login_perms.each do |perm|
388 if perm.properties['username'] == repo_name
395 login_perm = perm_exists
397 login_perm = Link.create(tail_uuid: self.uuid,
398 head_uuid: vm[:uuid],
399 link_class: 'permission',
401 properties: {'username' => repo_name})
402 logger.info { "login permission: " + login_perm[:uuid] }
409 # add the user to the 'All users' group
410 def create_user_group_link
411 # Look up the "All users" group (we expect uuid *-*-fffffffffffffff).
412 group = Group.where(name: 'All users').select do |g|
413 g[:uuid].match /-f+$/
417 logger.warn "No 'All users' group with uuid '*-*-fffffffffffffff'."
418 raise "No 'All users' group with uuid '*-*-fffffffffffffff' is found"
420 logger.info { "\"All users\" group uuid: " + group[:uuid] }
422 group_perms = Link.where(tail_uuid: self.uuid,
423 head_uuid: group[:uuid],
424 link_class: 'permission',
428 group_perm = Link.create(tail_uuid: self.uuid,
429 head_uuid: group[:uuid],
430 link_class: 'permission',
432 logger.info { "group permission: " + group_perm[:uuid] }
434 group_perm = group_perms.first
441 # Give the special "System group" permission to manage this user and
442 # all of this user's stuff.
444 def add_system_group_permission_link
445 act_as_system_user do
446 Link.create(link_class: 'permission',
448 tail_uuid: system_group_uuid,
449 head_uuid: self.uuid)
453 # Send admin notifications
454 def send_admin_notifications
455 AdminNotifier.new_user(self).deliver
456 if not self.is_active then
457 AdminNotifier.new_inactive_user(self).deliver