inspec/lib/vulcano/plugins/backend_file_common.rb

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# encoding: utf-8
class Vulcano::Plugins::Backend
class FileCommon
# interface methods: these fields should be implemented by every
# backend File
%w{
exists? mode owner group link_target content mtime size
selinux_label product_version file_version
}.each do |m|
define_method m.to_sym do
fail NotImplementedError, "File must implement the #{m}() method."
end
end
def type
:unknown
end
# The following methods can be overwritten by a derived class
# if desired, to e.g. achieve optimizations.
def md5sum
res = Digest::MD5.new
res.update(content)
res.hexdigest
end
def sha256sum
res = Digest::SHA256.new
res.update(content)
res.hexdigest
end
# Additional methods for convenience
def file?
type == :file
end
def block_device?
type == :block_device
end
def character_device?
type == :character_device
end
def socket?
type == :socket
end
def directory?
type == :directory
end
def symlink?
type == :symlink
end
def pipe?
type == :pipe?
end
def mode?(sth)
mode == sth
end
def owned_by?(sth)
owner == sth
end
def grouped_into?(sth)
group == sth
end
def linked_to?(dst)
link_target == dst
end
def version?(version)
product_version == version or
file_version == version
end
# helper methods provided to any implementing class
private
UNIX_MODE_OWNERS = {
owner: 00700,
group: 00070,
other: 00007
}
UNIX_MODE_TYPES = {
r: 00444,
w: 00222,
x: 00111
}
def unix_mode_mask(owner, type)
o = UNIX_MODE_OWNERS[owner.to_sym]
return nil if o.nil?
t = UNIX_MODE_TYPES[type.to_sym]
return nil if t.nil?
t & o
end
end
end