+ def self.setup(user, openid_prefix, repo_name=nil, vm_uuid=nil)
+ login_perm_props = {identity_url_prefix: openid_prefix}
+
+ # Check oid_login_perm
+ oid_login_perms = Link.where(tail_uuid: user.email,
+ head_kind: 'arvados#user',
+ link_class: 'permission',
+ name: 'can_login')
+
+ if !oid_login_perms.any?
+ # create openid login permission
+ oid_login_perm = Link.create(link_class: 'permission',
+ name: 'can_login',
+ tail_kind: 'email',
+ tail_uuid: user.email,
+ head_kind: 'arvados#user',
+ head_uuid: user.uuid,
+ properties: login_perm_props
+ )
+ logger.info { "openid login permission: " + oid_login_perm[:uuid] }
+ else
+ oid_login_perm = oid_login_perms.first
+ end
+
+ return [oid_login_perm] + user.setup_repo_vm_links(repo_name, vm_uuid)
+ end
+
+ # create links
+ def setup_repo_vm_links(repo_name, vm_uuid)
+ repo_perm = create_user_repo_link repo_name
+ vm_login_perm = create_vm_login_permission_link vm_uuid, repo_name
+ group_perm = create_user_group_link
+
+ return [repo_perm, vm_login_perm, group_perm, self].compact
+ end
+
+ # delete user signatures, login, repo, and vm perms, and mark as inactive
+ def unsetup
+ # delete oid_login_perms for this user
+ oid_login_perms = Link.where(tail_uuid: self.email,
+ head_kind: 'arvados#user',
+ link_class: 'permission',
+ name: 'can_login')
+ oid_login_perms.each do |perm|
+ Link.delete perm
+ end
+
+ # delete repo_perms for this user
+ repo_perms = Link.where(tail_uuid: self.uuid,
+ head_kind: 'arvados#repository',
+ link_class: 'permission',
+ name: 'can_write')
+ repo_perms.each do |perm|
+ Link.delete perm
+ end
+
+ # delete vm_login_perms for this user
+ vm_login_perms = Link.where(tail_uuid: self.uuid,
+ head_kind: 'arvados#virtualMachine',
+ link_class: 'permission',
+ name: 'can_login')
+ vm_login_perms.each do |perm|
+ Link.delete perm
+ end
+
+ # delete any signatures by this user
+ signed_uuids = Link.where(link_class: 'signature',
+ tail_kind: 'arvados#user',
+ tail_uuid: self.uuid)
+ signed_uuids.each do |sign|
+ Link.delete sign
+ end
+
+ # mark the user as inactive
+ self.is_active = false
+ self.save!
+ end
+
+ protected
+
+ def permission_to_update
+ # users must be able to update themselves (even if they are
+ # inactive) in order to create sessions
+ self == current_user or super
+ end
+
+ def permission_to_create
+ current_user.andand.is_admin or
+ (self == current_user and
+ self.is_active == Rails.configuration.new_users_are_active)
+ end
+
+ def check_auto_admin
+ if User.where("uuid not like '%-000000000000000'").where(:is_admin => true).count == 0 and Rails.configuration.auto_admin_user
+ if current_user.email == Rails.configuration.auto_admin_user
+ self.is_admin = true
+ self.is_active = true
+ end
+ end
+ end
+
+ def prevent_privilege_escalation
+ if current_user.andand.is_admin
+ return true
+ end
+ if self.is_active_changed?
+ if self.is_active != self.is_active_was
+ logger.warn "User #{current_user.uuid} tried to change is_active from #{self.is_admin_was} to #{self.is_admin} for #{self.uuid}"
+ self.is_active = self.is_active_was
+ end
+ end
+ if self.is_admin_changed?
+ if self.is_admin != self.is_admin_was
+ logger.warn "User #{current_user.uuid} tried to change is_admin from #{self.is_admin_was} to #{self.is_admin} for #{self.uuid}"
+ self.is_admin = self.is_admin_was
+ end
+ end
+ true
+ end
+
+ def prevent_inactive_admin
+ if self.is_admin and not self.is_active
+ # There is no known use case for the strange set of permissions
+ # that would result from this change. It's safest to assume it's
+ # a mistake and disallow it outright.
+ raise "Admin users cannot be inactive"
+ end
+ true
+ end
+