gitlab-org--gitlab-foss/app/finders/concerns/finder_with_cross_project_access.rb
2018-02-22 17:11:36 +01:00

70 lines
1.7 KiB
Ruby

# Module to prepend into finders to specify wether or not the finder requires
# cross project access
#
# This module depends on the finder implementing the following methods:
#
# - `#execute` should return an `ActiveRecord::Relation`
# - `#current_user` the user that requires access (or nil)
module FinderWithCrossProjectAccess
extend ActiveSupport::Concern
extend ::Gitlab::Utils::Override
prepended do
extend Gitlab::CrossProjectAccess::ClassMethods
end
override :execute
def execute(*args)
check = Gitlab::CrossProjectAccess.find_check(self)
original = super
return original unless check
return original if should_skip_cross_project_check || can_read_cross_project?
if check.should_run?(self)
original.model.none
else
original
end
end
# We can skip the cross project check for finding indivitual records.
# this would be handled by the `can?(:read_*, result)` call in `FinderMethods`
# itself.
override :find_by!
def find_by!(*args)
skip_cross_project_check { super }
end
override :find_by
def find_by(*args)
skip_cross_project_check { super }
end
override :find
def find(*args)
skip_cross_project_check { super }
end
private
attr_accessor :should_skip_cross_project_check
def skip_cross_project_check
self.should_skip_cross_project_check = true
yield
ensure
# The find could raise an `ActiveRecord::RecordNotFound`, after which we
# still want to re-enable the check.
self.should_skip_cross_project_check = false
end
def can_read_cross_project?
Ability.allowed?(current_user, :read_cross_project)
end
def can_read_project?(project)
Ability.allowed?(current_user, :read_project, project)
end
end