13547: Merge branch 'master' into 13547-respect-insecure-flag-when-talking-ssl-to...
[arvados.git] / services / api / app / models / user.rb
index 78ec7bea1ec1b9b1ac72cce590f1951dc87279ac..cc3a22cbf0d75f93563bfb375d1306141e958a26 100644 (file)
@@ -1,4 +1,9 @@
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
 require 'can_be_an_owner'
+require 'refresh_permission_view'
 
 class User < ArvadosModel
   include HasUuid
@@ -10,7 +15,7 @@ class User < ArvadosModel
   has_many :api_client_authorizations
   validates(:username,
             format: {
-              with: /^[A-Za-z][A-Za-z0-9]*$/,
+              with: /\A[A-Za-z][A-Za-z0-9]*\z/,
               message: "must begin with a letter and contain only alphanumerics",
             },
             uniqueness: true,
@@ -20,11 +25,14 @@ class User < ArvadosModel
   before_update :verify_repositories_empty, :if => Proc.new { |user|
     user.username.nil? and user.username_changed?
   }
+  before_update :setup_on_activate
   before_create :check_auto_admin
   before_create :set_initial_username, :if => Proc.new { |user|
     user.username.nil? and user.email
   }
+  after_create :setup_on_activate
   after_create :add_system_group_permission_link
+  after_create :invalidate_permissions_cache
   after_create :auto_setup_new_user, :if => Proc.new { |user|
     Rails.configuration.auto_setup_new_users and
     (user.uuid != system_user_uuid) and
@@ -41,6 +49,8 @@ class User < ArvadosModel
   has_many :authorized_keys, :foreign_key => :authorized_user_uuid, :primary_key => :uuid
   has_many :repositories, foreign_key: :owner_uuid, primary_key: :uuid
 
+  default_scope { where('redirect_to_user_uuid is null') }
+
   api_accessible :user, extend: :common do |t|
     t.add :email
     t.add :username
@@ -136,74 +146,55 @@ class User < ArvadosModel
       timestamp = DbCurrentTime::db_current_time.to_i if timestamp.nil?
       connection.execute "NOTIFY invalidate_permissions_cache, '#{timestamp}'"
     else
-      Rails.cache.delete_matched(/^groups_for_user_/)
+      refresh_permission_view
     end
   end
 
-  # Return a hash of {group_uuid: perm_hash} where perm_hash[:read]
-  # and perm_hash[:write] are true if this user can read and write
-  # objects owned by group_uuid.
-  def calculate_group_permissions
-    conn = ActiveRecord::Base.connection
-    self.class.transaction do
-      # Check whether the temporary view has already been created
-      # during this connection. If not, create it.
-      conn.exec_query 'SAVEPOINT check_permission_view'
-      begin
-        conn.exec_query('SELECT 1 FROM permission_view LIMIT 0')
-      rescue
-        conn.exec_query 'ROLLBACK TO SAVEPOINT check_permission_view'
-        sql = File.read(Rails.root.join('lib', 'create_permission_view.sql'))
-        conn.exec_query(sql)
-      ensure
-        conn.exec_query 'RELEASE SAVEPOINT check_permission_view'
-      end
-    end
+  def invalidate_permissions_cache(timestamp=nil)
+    User.invalidate_permissions_cache
+  end
 
-    group_perms = {}
-    conn.exec_query('SELECT target_owner_uuid, max(perm_level)
-                    FROM permission_view
-                    WHERE user_uuid = $1
-                    AND target_owner_uuid IS NOT NULL
-                    GROUP BY target_owner_uuid',
-                    # "name" arg is a query label that appears in logs:
-                    "group_permissions for #{uuid}",
-                    # "binds" arg is an array of [col_id, value] for '$1' vars:
-                    [[nil, uuid]],
-                    ).rows.each do |group_uuid, max_p_val|
-      group_perms[group_uuid] = PERMS_FOR_VAL[max_p_val.to_i]
+  # Return a hash of {user_uuid: group_perms}
+  def self.all_group_permissions
+    all_perms = {}
+    ActiveRecord::Base.connection.
+      exec_query("SELECT user_uuid, target_owner_uuid, perm_level, trashed
+                  FROM #{PERMISSION_VIEW}
+                  WHERE target_owner_uuid IS NOT NULL",
+                  # "name" arg is a query label that appears in logs:
+                  "all_group_permissions",
+                  ).rows.each do |user_uuid, group_uuid, max_p_val, trashed|
+      all_perms[user_uuid] ||= {}
+      all_perms[user_uuid][group_uuid] = PERMS_FOR_VAL[max_p_val.to_i]
     end
-    Rails.cache.write "groups_for_user_#{self.uuid}", group_perms
-    group_perms
+    all_perms
   end
 
   # Return a hash of {group_uuid: perm_hash} where perm_hash[:read]
   # and perm_hash[:write] are true if this user can read and write
   # objects owned by group_uuid.
   def group_permissions
-    r = Rails.cache.read "groups_for_user_#{self.uuid}"
-    if r.nil?
-      if Rails.configuration.async_permissions_update
-        while r.nil?
-          sleep(0.1)
-          r = Rails.cache.read "groups_for_user_#{self.uuid}"
-        end
-      else
-        r = calculate_group_permissions
-      end
+    group_perms = {self.uuid => {:read => true, :write => true, :manage => true}}
+    ActiveRecord::Base.connection.
+      exec_query("SELECT target_owner_uuid, perm_level, trashed
+                  FROM #{PERMISSION_VIEW}
+                  WHERE user_uuid = $1
+                  AND target_owner_uuid IS NOT NULL",
+                  # "name" arg is a query label that appears in logs:
+                  "group_permissions for #{uuid}",
+                  # "binds" arg is an array of [col_id, value] for '$1' vars:
+                  [[nil, uuid]],
+                ).rows.each do |group_uuid, max_p_val, trashed|
+      group_perms[group_uuid] = PERMS_FOR_VAL[max_p_val.to_i]
     end
-    r
-  end
-
-  def self.setup(user, openid_prefix, repo_name=nil, vm_uuid=nil)
-    return user.setup_repo_vm_links(repo_name, vm_uuid, openid_prefix)
+    group_perms
   end
 
   # create links
-  def setup_repo_vm_links(repo_name, vm_uuid, openid_prefix)
+  def setup(openid_prefix:, repo_name: nil, vm_uuid: nil)
     oid_login_perm = create_oid_login_perm openid_prefix
     repo_perm = create_user_repo_link repo_name
-    vm_login_perm = create_vm_login_permission_link vm_uuid, username
+    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
@@ -266,14 +257,100 @@ class User < ArvadosModel
     end
   end
 
+  def update_uuid(new_uuid:)
+    if !current_user.andand.is_admin
+      raise PermissionDeniedError
+    end
+    if uuid == system_user_uuid || uuid == anonymous_user_uuid
+      raise "update_uuid cannot update system accounts"
+    end
+    if self.class != self.class.resource_class_for_uuid(new_uuid)
+      raise "invalid new_uuid #{new_uuid.inspect}"
+    end
+    transaction(requires_new: true) do
+      reload
+      old_uuid = self.uuid
+      self.uuid = new_uuid
+      save!(validate: false)
+      change_all_uuid_refs(old_uuid: old_uuid, new_uuid: new_uuid)
+    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.
+  #
+  # 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:)
+    raise PermissionDeniedError if !current_user.andand.is_admin
+    raise "not implemented" if !redirect_to_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
+      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)
+
+      # 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|
+        klass.where(column => uuid).update_all(column => new_user.uuid)
+      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|
+        next if [ApiClientAuthorization,
+                 AuthorizedKey,
+                 Link,
+                 Log,
+                 Repository].include?(klass)
+        next if !klass.columns.collect(&:name).include?('owner_uuid')
+        klass.where(owner_uuid: uuid).update_all(owner_uuid: new_owner_uuid)
+      end
+
+      update_attributes!(redirect_to_user_uuid: new_user.uuid)
+      invalidate_permissions_cache
+    end
+  end
+
   protected
 
+  def change_all_uuid_refs(old_uuid:, new_uuid:)
+    ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |klass|
+      klass.columns.each do |col|
+        if col.name.end_with?('_uuid')
+          column = col.name.to_sym
+          klass.where(column => old_uuid).update_all(column => new_uuid)
+        end
+      end
+    end
+  end
+
   def ensure_ownership_path_leads_to_user
     true
   end
 
   def permission_to_update
-    if username_changed?
+    if username_changed? || redirect_to_user_uuid_changed?
       current_user.andand.is_admin
     else
       # users must be able to update themselves (even if they are
@@ -284,7 +361,8 @@ class User < ArvadosModel
 
   def permission_to_create
     current_user.andand.is_admin or
-      (self == current_user and
+      (self == current_user &&
+       self.redirect_to_user_uuid.nil? &&
        self.is_active == Rails.configuration.new_users_are_active)
   end
 
@@ -337,7 +415,7 @@ class User < ArvadosModel
     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}"
+        logger.warn "User #{current_user.uuid} tried to change is_active from #{self.is_active_was} to #{self.is_active} for #{self.uuid}"
         self.is_active = self.is_active_was
       end
     end
@@ -377,22 +455,22 @@ class User < ArvadosModel
     merged
   end
 
-  def create_oid_login_perm (openid_prefix)
-    login_perm_props = { "identity_url_prefix" => openid_prefix}
-
+  def create_oid_login_perm(openid_prefix)
     # Check oid_login_perm
     oid_login_perms = Link.where(tail_uuid: self.email,
-                                   link_class: 'permission',
-                                   name: 'can_login').where("head_uuid = ?", self.uuid)
+                                 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',
+      oid_login_perm = Link.create!(link_class: 'permission',
                                    name: 'can_login',
                                    tail_uuid: self.email,
                                    head_uuid: self.uuid,
-                                   properties: login_perm_props
-                                  )
+                                   properties: {
+                                     "identity_url_prefix" => openid_prefix,
+                                   })
       logger.info { "openid login permission: " + oid_login_perm[:uuid] }
     else
       oid_login_perm = oid_login_perms.first
@@ -420,15 +498,12 @@ class User < ArvadosModel
   # create login permission for the given vm_uuid, if it does not already exist
   def create_vm_login_permission_link(vm_uuid, repo_name)
     # vm uuid is optional
-    if vm_uuid
-      vm = VirtualMachine.where(uuid: vm_uuid).first
+    return if !vm_uuid
 
-      if not vm
-        logger.warn "Could not find virtual machine for #{vm_uuid.inspect}"
-        raise "No vm found for #{vm_uuid}"
-      end
-    else
-      return
+    vm = VirtualMachine.where(uuid: vm_uuid).first
+    if !vm
+      logger.warn "Could not find virtual machine for #{vm_uuid.inspect}"
+      raise "No vm found for #{vm_uuid}"
     end
 
     logger.info { "vm uuid: " + vm[:uuid] }
@@ -475,15 +550,23 @@ class User < ArvadosModel
 
   # Send admin notifications
   def send_admin_notifications
-    AdminNotifier.new_user(self).deliver
+    AdminNotifier.new_user(self).deliver_now
     if not self.is_active then
-      AdminNotifier.new_inactive_user(self).deliver
+      AdminNotifier.new_inactive_user(self).deliver_now
+    end
+  end
+
+  # Automatically setup if is_active flag turns on
+  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)
     end
   end
 
   # Automatically setup new user during creation
   def auto_setup_new_user
-    setup_repo_vm_links(nil, nil, Rails.configuration.default_openid_prefix)
+    setup(openid_prefix: Rails.configuration.default_openid_prefix)
     if username
       create_vm_login_permission_link(Rails.configuration.auto_setup_new_users_with_vm_uuid,
                                       username)
@@ -502,7 +585,7 @@ class User < ArvadosModel
     if self.prefs_changed?
       if self.prefs_was.andand.empty? || !self.prefs_was.andand['profile']
         profile_notification_address = Rails.configuration.user_profile_notification_address
-        ProfileNotifier.profile_created(self, profile_notification_address).deliver if profile_notification_address
+        ProfileNotifier.profile_created(self, profile_notification_address).deliver_now if profile_notification_address
       end
     end
   end