Merge branch 'master' into 15558-alternate-email-addresses
[arvados.git] / services / api / app / models / user.rb
index bca1eef7261f97ceabf6e95c828fb07aaae167b2..8ab8ea1d85b0146f692993a8cd1fb6199addc8fc 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
@@ -25,9 +30,11 @@ class User < ArvadosModel
   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
+    Rails.configuration.Users.AutoSetupNewUsers and
     (user.uuid != system_user_uuid) and
     (user.uuid != anonymous_user_uuid)
   }
@@ -42,6 +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
@@ -72,7 +81,7 @@ class User < ArvadosModel
 
   def is_invited
     !!(self.is_active ||
-       Rails.configuration.new_users_are_active ||
+       Rails.configuration.Users.NewUsersAreActive ||
        self.groups_i_can(:read).select { |x| x.match(/-f+$/) }.first)
   end
 
@@ -132,27 +141,24 @@ class User < ArvadosModel
     true
   end
 
-  def self.invalidate_permissions_cache(timestamp=nil)
-    if Rails.configuration.async_permissions_update
-      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_/)
-    end
+  def self.invalidate_permissions_cache(async=false)
+    refresh_permission_view(async)
+  end
+
+  def invalidate_permissions_cache
+    User.invalidate_permissions_cache
   end
 
   # Return a hash of {user_uuid: group_perms}
   def self.all_group_permissions
-    install_view('permission')
     all_perms = {}
     ActiveRecord::Base.connection.
-      exec_query('SELECT user_uuid, target_owner_uuid, max(perm_level)
-                  FROM permission_view
-                  WHERE target_owner_uuid IS NOT NULL
-                  GROUP BY user_uuid, target_owner_uuid',
+      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|
+                  ).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
@@ -162,45 +168,23 @@ class User < ArvadosModel
   # 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
-    self.class.install_view('permission')
-
-    group_perms = {}
+  def group_permissions
+    group_perms = {self.uuid => {:read => true, :write => true, :manage => true}}
     ActiveRecord::Base.connection.
-      exec_query('SELECT target_owner_uuid, max(perm_level)
-                  FROM permission_view
+      exec_query("SELECT target_owner_uuid, perm_level, trashed
+                  FROM #{PERMISSION_VIEW}
                   WHERE user_uuid = $1
-                  AND target_owner_uuid IS NOT NULL
-                  GROUP BY target_owner_uuid',
+                  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|
+                ).rows.each do |group_uuid, max_p_val, trashed|
       group_perms[group_uuid] = PERMS_FOR_VAL[max_p_val.to_i]
     end
-    Rails.cache.write "groups_for_user_#{self.uuid}", group_perms
     group_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
-    end
-    r
-  end
-
   # create links
   def setup(openid_prefix:, repo_name: nil, vm_uuid: nil)
     oid_login_perm = create_oid_login_perm openid_prefix
@@ -214,32 +198,32 @@ class User < ArvadosModel
   # delete user signatures, login, repo, and vm perms, and mark as inactive
   def unsetup
     # delete oid_login_perms for this user
-    Link.destroy_all(tail_uuid: self.email,
+    Link.where(tail_uuid: self.email,
                      link_class: 'permission',
-                     name: 'can_login')
+                     name: 'can_login').destroy_all
 
     # delete repo_perms for this user
-    Link.destroy_all(tail_uuid: self.uuid,
+    Link.where(tail_uuid: self.uuid,
                      link_class: 'permission',
-                     name: 'can_manage')
+                     name: 'can_manage').destroy_all
 
     # delete vm_login_perms for this user
-    Link.destroy_all(tail_uuid: self.uuid,
+    Link.where(tail_uuid: self.uuid,
                      link_class: 'permission',
-                     name: 'can_login')
+                     name: 'can_login').destroy_all
 
     # delete "All users" group read permissions for this user
     group = Group.where(name: 'All users').select do |g|
       g[:uuid].match(/-f+$/)
     end.first
-    Link.destroy_all(tail_uuid: self.uuid,
+    Link.where(tail_uuid: self.uuid,
                      head_uuid: group[:uuid],
                      link_class: 'permission',
-                     name: 'can_read')
+                     name: 'can_read').destroy_all
 
     # delete any signatures by this user
-    Link.destroy_all(link_class: 'signature',
-                     tail_uuid: self.uuid)
+    Link.where(link_class: 'signature',
+                     tail_uuid: self.uuid).destroy_all
 
     # delete user preferences (including profile)
     self.prefs = {}
@@ -268,14 +252,184 @@ 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
+
+  def redirects_to
+    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}")
+      end
+      redirects += 1
+      if redirects > 15
+        raise "Starting from #{self.uuid} redirect_to_user_uuid exceeded maximum number of redirects"
+      end
+    end
+    user
+  end
+
+  def self.register info
+    # login info expected fields, all can be optional but at minimum
+    # must supply either 'identity_url' or 'email'
+    #
+    #   email
+    #   first_name
+    #   last_name
+    #   username
+    #   alternate_emails
+    #   identity_url
+
+    info = info.with_indifferent_access
+
+    primary_user = nil
+
+    # local database
+    identity_url = info['identity_url']
+
+    if identity_url && identity_url.length > 0
+      # Only local users can create sessions, hence uuid_like_pattern
+      # here.
+      user = User.unscoped.where('identity_url = ? and uuid like ?',
+                                 identity_url,
+                                 User.uuid_like_pattern).first
+      primary_user = user.redirects_to if user
+    end
+
+    if !primary_user
+      # identity url is unset or didn't find matching record.
+      emails = [info['email']] + (info['alternate_emails'] || [])
+      emails.select! {|em| !em.nil? && !em.empty?}
+
+      User.unscoped.where('email in (?) and uuid like ?',
+                          emails,
+                          User.uuid_like_pattern).each do |user|
+        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}"
+        end
+      end
+    end
+
+    if !primary_user
+      # New user registration
+      primary_user = User.new(:owner_uuid => system_user_uuid,
+                              :is_admin => false,
+                              :is_active => Rails.configuration.Users.NewUsersAreActive)
+
+      primary_user.set_initial_username(requested: info['username']) if info['username']
+      primary_user.identity_url = info['identity_url'] if identity_url
+    end
+
+    primary_user.email = info['email'] if info['email']
+    primary_user.first_name = info['first_name'] if info['first_name']
+    primary_user.last_name = info['last_name'] if info['last_name']
+
+    if (!primary_user.email or primary_user.email.empty?) and (!primary_user.identity_url or primary_user.identity_url.empty?)
+      raise "Must have supply at least one of 'email' or 'identity_url' to User.register"
+    end
+
+    act_as_system_user do
+      primary_user.save!
+    end
+
+    primary_user
+  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? || email_changed?
       current_user.andand.is_admin
     else
       # users must be able to update themselves (even if they are
@@ -286,16 +440,17 @@ class User < ArvadosModel
 
   def permission_to_create
     current_user.andand.is_admin or
-      (self == current_user and
-       self.is_active == Rails.configuration.new_users_are_active)
+      (self == current_user &&
+       self.redirect_to_user_uuid.nil? &&
+       self.is_active == Rails.configuration.Users.NewUsersAreActive)
   end
 
   def check_auto_admin
     return if self.uuid.end_with?('anonymouspublic')
     if (User.where("email = ?",self.email).where(:is_admin => true).count == 0 and
-        Rails.configuration.auto_admin_user and self.email == Rails.configuration.auto_admin_user) or
+        !Rails.configuration.Users.AutoAdminUserWithEmail.empty? and self.email == Rails.configuration.Users["AutoAdminUserWithEmail"]) or
        (User.where("uuid not like '%-000000000000000'").where(:is_admin => true).count == 0 and
-        Rails.configuration.auto_admin_first_user)
+        Rails.configuration.Users.AutoAdminFirstUser)
       self.is_admin = true
       self.is_active = true
     end
@@ -310,13 +465,13 @@ class User < ArvadosModel
     quoted_name = self.class.connection.quote_string(basename)
     next_username = basename
     next_suffix = 1
-    while Rails.configuration.auto_setup_name_blacklist.include?(next_username)
+    while Rails.configuration.Users.AutoSetupUsernameBlacklist[next_username]
       next_suffix += 1
       next_username = "%s%i" % [basename, next_suffix]
     end
     0.upto(6).each do |suffix_len|
       pattern = "%s%s" % [quoted_name, "_" * suffix_len]
-      self.class.
+      self.class.unscoped.
           where("username like '#{pattern}'").
           select(:username).
           order('username asc').
@@ -339,7 +494,7 @@ 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
@@ -388,7 +543,7 @@ class User < ArvadosModel
 
     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,
@@ -422,7 +577,7 @@ 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
-    return if !vm_uuid
+    return if vm_uuid == ""
 
     vm = VirtualMachine.where(uuid: vm_uuid).first
     if !vm
@@ -492,10 +647,10 @@ class User < ArvadosModel
   def auto_setup_new_user
     setup(openid_prefix: Rails.configuration.default_openid_prefix)
     if username
-      create_vm_login_permission_link(Rails.configuration.auto_setup_new_users_with_vm_uuid,
+      create_vm_login_permission_link(Rails.configuration.Users.AutoSetupNewUsersWithVmUUID,
                                       username)
       repo_name = "#{username}/#{username}"
-      if Rails.configuration.auto_setup_new_users_with_repository and
+      if Rails.configuration.Users.AutoSetupNewUsersWithRepository and
           Repository.where(name: repo_name).first.nil?
         repo = Repository.create!(name: repo_name, owner_uuid: uuid)
         Link.create!(tail_uuid: uuid, head_uuid: repo.uuid,
@@ -508,8 +663,8 @@ class User < ArvadosModel
   def send_profile_created_notification
     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_now if profile_notification_address
+        profile_notification_address = Rails.configuration.Users.UserProfileNotificationAddress
+        ProfileNotifier.profile_created(self, profile_notification_address).deliver_now if profile_notification_address and !profile_notification_address.empty?
       end
     end
   end
@@ -517,7 +672,7 @@ class User < ArvadosModel
   def verify_repositories_empty
     unless repositories.first.nil?
       errors.add(:username, "can't be unset when the user owns repositories")
-      false
+      throw(:abort)
     end
   end