16387: Allow setting is_active=false only on LoginCluster users.
[arvados.git] / services / api / app / models / user.rb
index 4493f038cd1c03e5e265d973ed774e7223eb43e4..c3641b64e84f04217145edacab05ac8d84f259a7 100644 (file)
@@ -21,6 +21,7 @@ class User < ArvadosModel
             },
             uniqueness: true,
             allow_nil: true)
+  validate :must_unsetup_to_deactivate
   before_update :prevent_privilege_escalation
   before_update :prevent_inactive_admin
   before_update :verify_repositories_empty, :if => Proc.new { |user|
@@ -187,18 +188,20 @@ class User < ArvadosModel
   end
 
   # create links
-  def setup(openid_prefix:, repo_name: nil, vm_uuid: nil)
-    oid_login_perm = create_oid_login_perm openid_prefix
+  def setup(repo_name: nil, vm_uuid: nil)
     repo_perm = create_user_repo_link repo_name
     vm_login_perm = create_vm_login_permission_link(vm_uuid, username) if vm_uuid
     group_perm = create_user_group_link
 
-    return [oid_login_perm, repo_perm, vm_login_perm, group_perm, self].compact
+    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
+    #
+    # note: these permission links are obsolete, they have no effect
+    # on anything and they are not created for new users.
     Link.where(tail_uuid: self.email,
                      link_class: 'permission',
                      name: 'can_login').destroy_all
@@ -234,6 +237,43 @@ class User < ArvadosModel
     self.save!
   end
 
+  def must_unsetup_to_deactivate
+    if !self.new_record? &&
+       self.uuid[0..4] == Rails.configuration.Login.LoginCluster &&
+       self.uuid[0..4] != Rails.configuration.ClusterID
+      # OK to update our local record to whatever the LoginCluster
+      # reports, because self-activate is not allowed.
+      return
+    elsif self.is_active_changed? &&
+       self.is_active_was &&
+       !self.is_active
+
+      group = Group.where(name: 'All users').select do |g|
+        g[:uuid].match(/-f+$/)
+      end.first
+
+      # When a user is set up, they are added to the "All users"
+      # group.  A user that is part of the "All users" group is
+      # allowed to self-activate.
+      #
+      # It doesn't make sense to deactivate a user (set is_active =
+      # false) without first removing them from the "All users" group,
+      # because they would be able to immediately reactivate
+      # themselves.
+      #
+      # The 'unsetup' method removes the user from the "All users"
+      # group (and also sets is_active = false) so send a message
+      # explaining the correct way to deactivate a user.
+      #
+      if Link.where(tail_uuid: self.uuid,
+                    head_uuid: group[:uuid],
+                    link_class: 'permission',
+                    name: 'can_read').any?
+        errors.add :is_active, "cannot be set to false directly, use the 'Deactivate' button on Workbench, or the 'unsetup' API call"
+      end
+    end
+  end
+
   def set_initial_username(requested: false)
     if !requested.is_a?(String) || requested.empty?
       email_parts = email.partition("@")
@@ -272,45 +312,87 @@ class User < ArvadosModel
     end
   end
 
-  # Move this user's (i.e., self's) owned items into new_owner_uuid.
-  # Also redirect future uses of this account to
-  # redirect_to_user_uuid, i.e., when a caller authenticates to this
-  # account in the future, the account redirect_to_user_uuid account
-  # will be used instead.
+  # Move this user's (i.e., self's) owned items to new_owner_uuid and
+  # new_user_uuid (for things normally owned directly by the user).
+  #
+  # If redirect_auth is true, also reassign auth tokens and ssh keys,
+  # and redirect this account to redirect_to_user_uuid, i.e., when a
+  # caller authenticates to this account in the future, the account
+  # redirect_to_user_uuid account will be used instead.
   #
   # current_user must have admin privileges, i.e., the caller is
   # responsible for checking permission to do this.
-  def merge(new_owner_uuid:, redirect_to_user_uuid:)
+  def merge(new_owner_uuid:, new_user_uuid:, redirect_to_new_user:)
     raise PermissionDeniedError if !current_user.andand.is_admin
-    raise "not implemented" if !redirect_to_user_uuid
+    raise "Missing new_owner_uuid" if !new_owner_uuid
+    raise "Missing new_user_uuid" if !new_user_uuid
     transaction(requires_new: true) do
       reload
       raise "cannot merge an already merged user" if self.redirect_to_user_uuid
 
-      new_user = User.where(uuid: redirect_to_user_uuid).first
+      new_user = User.where(uuid: new_user_uuid).first
       raise "user does not exist" if !new_user
       raise "cannot merge to an already merged user" if new_user.redirect_to_user_uuid
 
-      # Existing API tokens are updated to authenticate to the new
-      # user.
-      ApiClientAuthorization.
-        where(user_id: id).
-        update_all(user_id: new_user.id)
+      # If 'self' is a remote user, don't transfer authorizations
+      # (i.e. ability to access the account) to the new user, because
+      # that gives the remote site the ability to access the 'new'
+      # user account that takes over the 'self' account.
+      #
+      # If 'self' is a local user, it is okay to transfer
+      # authorizations, even if the 'new' user is a remote account,
+      # because the remote site does not gain the ability to access an
+      # account it could not before.
+
+      if redirect_to_new_user and self.uuid[0..4] == Rails.configuration.ClusterID
+        # Existing API tokens and ssh keys are updated to authenticate
+        # to the new user.
+        ApiClientAuthorization.
+          where(user_id: id).
+          update_all(user_id: new_user.id)
+
+        user_updates = [
+          [AuthorizedKey, :owner_uuid],
+          [AuthorizedKey, :authorized_user_uuid],
+          [Link, :owner_uuid],
+          [Link, :tail_uuid],
+          [Link, :head_uuid],
+        ]
+      else
+        # Destroy API tokens and ssh keys associated with the old
+        # user.
+        ApiClientAuthorization.where(user_id: id).destroy_all
+        AuthorizedKey.where(owner_uuid: uuid).destroy_all
+        AuthorizedKey.where(authorized_user_uuid: uuid).destroy_all
+        user_updates = [
+          [Link, :owner_uuid],
+          [Link, :tail_uuid]
+        ]
+      end
 
       # References to the old user UUID in the context of a user ID
       # (rather than a "home project" in the project hierarchy) are
       # updated to point to the new user.
-      [
-        [AuthorizedKey, :owner_uuid],
-        [AuthorizedKey, :authorized_user_uuid],
-        [Repository, :owner_uuid],
-        [Link, :owner_uuid],
-        [Link, :tail_uuid],
-        [Link, :head_uuid],
-      ].each do |klass, column|
+      user_updates.each do |klass, column|
         klass.where(column => uuid).update_all(column => new_user.uuid)
       end
 
+      # Need to update repository names to new username
+      if username
+        old_repo_name_re = /^#{Regexp.escape(username)}\//
+        Repository.where(:owner_uuid => uuid).each do |repo|
+          repo.owner_uuid = new_user.uuid
+          repo_name_sub = "#{new_user.username}/"
+          name = repo.name.sub(old_repo_name_re, repo_name_sub)
+          while (conflict = Repository.where(:name => name).first) != nil
+            repo_name_sub += "migrated"
+            name = repo.name.sub(old_repo_name_re, repo_name_sub)
+          end
+          repo.name = name
+          repo.save!
+        end
+      end
+
       # References to the merged user's "home project" are updated to
       # point to new_owner_uuid.
       ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |klass|
@@ -323,7 +405,9 @@ class User < ArvadosModel
         klass.where(owner_uuid: uuid).update_all(owner_uuid: new_owner_uuid)
       end
 
-      update_attributes!(redirect_to_user_uuid: new_user.uuid)
+      if redirect_to_new_user
+        update_attributes!(redirect_to_user_uuid: new_user.uuid, username: nil)
+      end
       invalidate_permissions_cache
     end
   end
@@ -332,10 +416,12 @@ class User < ArvadosModel
     user = self
     redirects = 0
     while (uuid = user.redirect_to_user_uuid)
-      user = User.unscoped.find_by_uuid(uuid)
-      if !user
-        raise Exception.new("user uuid #{user.uuid} redirects to nonexistent uuid #{uuid}")
+      break if uuid.empty?
+      nextuser = User.unscoped.find_by_uuid(uuid)
+      if !nextuser
+        raise Exception.new("user uuid #{user.uuid} redirects to nonexistent uuid '#{uuid}'")
       end
+      user = nextuser
       redirects += 1
       if redirects > 15
         raise "Starting from #{self.uuid} redirect_to_user_uuid exceeded maximum number of redirects"
@@ -355,8 +441,6 @@ class User < ArvadosModel
     #   alternate_emails
     #   identity_url
 
-    info = info.with_indifferent_access
-
     primary_user = nil
 
     # local database
@@ -382,7 +466,7 @@ class User < ArvadosModel
         if !primary_user
           primary_user = user.redirects_to
         elsif primary_user.uuid != user.redirects_to.uuid
-          raise "Ambigious email address, directs to both #{primary_user.uuid} and #{user.redirects_to.uuid}"
+          raise "Ambiguous email address, directs to both #{primary_user.uuid} and #{user.redirects_to.uuid}"
         end
       end
     end
@@ -393,7 +477,7 @@ class User < ArvadosModel
                               :is_admin => false,
                               :is_active => Rails.configuration.Users.NewUsersAreActive)
 
-      primary_user.set_initial_username(requested: info['username']) if info['username']
+      primary_user.set_initial_username(requested: info['username']) if info['username'] && !info['username'].blank?
       primary_user.identity_url = info['identity_url'] if identity_url
     end
 
@@ -535,30 +619,6 @@ class User < ArvadosModel
     merged
   end
 
-  def create_oid_login_perm(openid_prefix)
-    # Check oid_login_perm
-    oid_login_perms = Link.where(tail_uuid: self.email,
-                                 head_uuid: self.uuid,
-                                 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_uuid: self.email,
-                                   head_uuid: self.uuid,
-                                   properties: {
-                                     "identity_url_prefix" => openid_prefix,
-                                   })
-      logger.info { "openid login permission: " + oid_login_perm[:uuid] }
-    else
-      oid_login_perm = oid_login_perms.first
-    end
-
-    return oid_login_perm
-  end
-
   def create_user_repo_link(repo_name)
     # repo_name is optional
     if not repo_name
@@ -640,13 +700,13 @@ class User < ArvadosModel
   def setup_on_activate
     return if [system_user_uuid, anonymous_user_uuid].include?(self.uuid)
     if is_active && (new_record? || is_active_changed?)
-      setup(openid_prefix: Rails.configuration.default_openid_prefix)
+      setup
     end
   end
 
   # Automatically setup new user during creation
   def auto_setup_new_user
-    setup(openid_prefix: Rails.configuration.default_openid_prefix)
+    setup
     if username
       create_vm_login_permission_link(Rails.configuration.Users.AutoSetupNewUsersWithVmUUID,
                                       username)