X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/eb0012d203974e54023dfcac6e04fd4c2c40270f..73872ccc5bb6b80a6049b44b0113085a9c2b6934:/services/api/app/models/user.rb

diff --git a/services/api/app/models/user.rb b/services/api/app/models/user.rb
index f807beafc2..9d4c20af9f 100644
--- a/services/api/app/models/user.rb
+++ b/services/api/app/models/user.rb
@@ -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
@@ -26,6 +31,7 @@ class User < ArvadosModel
     user.username.nil? and user.email
   }
   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
@@ -42,6 +48,8 @@ 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
@@ -137,52 +145,50 @@ 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
+
+  def invalidate_permissions_cache(timestamp=nil)
+    User.invalidate_permissions_cache
+  end
+
+  # 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
+    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 calculate_group_permissions
-    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
@@ -250,14 +256,100 @@ 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
@@ -268,7 +360,8 @@ 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
 
@@ -321,7 +414,7 @@ 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