before_create :ensure_permission_to_create
before_update :ensure_permission_to_update
before_destroy :ensure_permission_to_destroy
+
before_create :update_modified_by_fields
before_update :maybe_update_modified_by_fields
after_create :log_create
after_destroy :log_destroy
validate :ensure_serialized_attribute_type
validate :normalize_collection_uuids
+ validate :ensure_valid_uuids
has_many :permissions, :foreign_key => :head_uuid, :class_name => 'Link', :primary_key => :uuid, :conditions => "link_class = 'permission'"
end
def self.kind_class(kind)
- kind.match(/^arvados\#(.+?)(_list|List)?$/)[1].pluralize.classify.constantize rescue nil
+ kind.match(/^arvados\#(.+)$/)[1].classify.safe_constantize rescue nil
end
def href
def self.searchable_columns operator
textonly_operator = !operator.match(/[<=>]/)
self.columns.collect do |col|
- if col.name == 'owner_uuid'
- nil
- elsif [:string, :text].index(col.type)
+ if [:string, :text].index(col.type)
col.name
elsif !textonly_operator and [:datetime, :integer].index(col.type)
col.name
self.columns.select { |col| col.name == attr.to_s }.first
end
- def eager_load_associations
- self.class.columns.each do |col|
- re = col.name.match /^(.*)_kind$/
- if (re and
- self.respond_to? re[1].to_sym and
- (auuid = self.send((re[1] + '_uuid').to_sym)) and
- (aclass = self.class.kind_class(self.send(col.name.to_sym))) and
- (aobject = aclass.where('uuid=?', auuid).first))
- self.instance_variable_set('@'+re[1], aobject)
- end
- end
- end
+ # def eager_load_associations
+ # self.class.columns.each do |col|
+ # re = col.name.match /^(.*)_kind$/
+ # if (re and
+ # self.respond_to? re[1].to_sym and
+ # (auuid = self.send((re[1] + '_uuid').to_sym)) and
+ # (aclass = self.class.kind_class(self.send(col.name.to_sym))) and
+ # (aobject = aclass.where('uuid=?', auuid).first))
+ # self.instance_variable_set('@'+re[1], aobject)
+ # end
+ # end
+ # end
def self.readable_by user
+ if user.is_admin
+ # Admins can read anything, so return immediately.
+ return self
+ end
+
uuid_list = [user.uuid, *user.groups_i_can(:read)]
sanitized_uuid_list = uuid_list.
collect { |uuid| sanitize(uuid) }.join(', ')
or_references_me = ''
- if self == Link and user
+
+ if self == User
+ or_row_is_me = "OR (#{table_name}.uuid=#{sanitize user.uuid})"
+ end
+
+ if self == Link
or_references_me = "OR (#{table_name}.link_class in (#{sanitize 'permission'}, #{sanitize 'resources'}) AND #{sanitize user.uuid} IN (#{table_name}.head_uuid, #{table_name}.tail_uuid))"
end
- joins("LEFT JOIN links permissions ON permissions.head_uuid in (#{table_name}.owner_uuid, #{table_name}.uuid) AND permissions.tail_uuid in (#{sanitized_uuid_list}) AND permissions.link_class='permission'").
- where("?=? OR #{table_name}.owner_uuid in (?) OR #{table_name}.uuid=? OR permissions.head_uuid IS NOT NULL #{or_references_me}",
- true, user.is_admin,
- uuid_list,
- user.uuid)
+
+ if self == Log
+ or_object_uuid = ", #{table_name}.object_uuid"
+ or_object_owner = "OR (#{table_name}.object_owner_uuid in (#{sanitized_uuid_list}))"
+ end
+
+ # Link head points to this row, or to the owner of this row (the thing to be read)
+ # (or the object described by this row, for logs table only)
+ # Link tail originates from this user, or a group that is readable by this
+ # user (the identity with authorization to read)
+ # Link is any permission link ('write' and 'manage' implicitly include 'read')
+ # The existence of such a link is tested in the where clause as permissions.head_uuid IS NOT NULL.
+ # or
+ # This row is owned by this user, or owned by a group readable by this user
+ # or
+ # This is the users table
+ # This row uuid is equal this user uuid
+ # or
+ # This is the links table
+ # This row is a permission link
+ # The current user is referenced in either the head or tail of the link
+ # or
+ # This is the logs table
+ # This object described by this row is owned by this user, or owned by a group readable by this user
+
+ joins("LEFT JOIN links permissions ON permissions.head_uuid in (#{table_name}.owner_uuid, #{table_name}.uuid #{or_object_uuid}) AND permissions.tail_uuid in (#{sanitized_uuid_list}) AND permissions.link_class='permission'").
+ where("permissions.head_uuid IS NOT NULL OR #{table_name}.owner_uuid in (?) #{or_row_is_me} #{or_references_me} #{or_object_owner}",
+ uuid_list).uniq
end
def logged_attributes
end
def maybe_update_modified_by_fields
- update_modified_by_fields if self.changed?
+ update_modified_by_fields if self.changed? or self.new_record?
end
def update_modified_by_fields
attributes.keys.select { |a| a.match /_uuid$/ }
end
+ def skip_uuid_read_permission_check
+ %w(modified_by_client_uuid)
+ end
+
+ def skip_uuid_existence_check
+ []
+ end
+
def normalize_collection_uuids
foreign_key_attributes.each do |attr|
attr_value = send attr
end
end
+ @@UUID_REGEX = /^[0-9a-z]{5}-([0-9a-z]{5})-[0-9a-z]{15}$/
+
+ @@prefixes_hash = nil
+ def self.uuid_prefixes
+ unless @@prefixes_hash
+ @@prefixes_hash = {}
+ ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
+ if k.respond_to?(:uuid_prefix)
+ @@prefixes_hash[k.uuid_prefix] = k
+ end
+ end
+ end
+ @@prefixes_hash
+ end
+
+ def self.uuid_like_pattern
+ "_____-#{uuid_prefix}-_______________"
+ end
+
+ def ensure_valid_uuids
+ specials = [system_user_uuid, 'd41d8cd98f00b204e9800998ecf8427e+0']
+
+ foreign_key_attributes.each do |attr|
+ if new_record? or send (attr + "_changed?")
+ next if skip_uuid_existence_check.include? attr
+ attr_value = send attr
+ next if specials.include? attr_value
+ if attr_value
+ if (r = ArvadosModel::resource_class_for_uuid attr_value)
+ unless skip_uuid_read_permission_check.include? attr
+ r = r.readable_by(current_user)
+ end
+ if r.where(uuid: attr_value).count == 0
+ errors.add(attr, "'#{attr_value}' not found")
+ end
+ end
+ end
+ end
+ end
+ end
+
+ class Email
+ def self.kind
+ "email"
+ end
+
+ def kind
+ self.class.kind
+ end
+
+ def self.readable_by (u)
+ self
+ end
+
+ def self.where (u)
+ [{:uuid => u[:uuid]}]
+ end
+ end
+
def self.resource_class_for_uuid(uuid)
if uuid.is_a? ArvadosModel
return uuid.class
resource_class = nil
Rails.application.eager_load!
- uuid.match /^[0-9a-z]{5}-([0-9a-z]{5})-[0-9a-z]{15}$/ do |re|
- ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
- if k.respond_to?(:uuid_prefix)
- if k.uuid_prefix == re[1]
- return k
- end
- end
- end
+ uuid.match @@UUID_REGEX do |re|
+ return uuid_prefixes[re[1]] if uuid_prefixes[re[1]]
end
+
+ if uuid.match /.+@.+/
+ return Email
+ end
+
nil
end
log = Log.new(event_type: event_type).fill_object(self)
yield log
log.save!
+ connection.execute "NOTIFY logs, '#{log.id}'"
log_start_state
end
projects / arvados.git / blobdiff