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require 'puppet/util/warnings'
require 'forwardable'
module Puppet::Util::SUIDManager
include Puppet::Util::Warnings
extend Forwardable
# Note groups= is handled specially due to a bug in OS X 10.6
to_delegate_to_process = [ :euid=, :euid, :egid=, :egid, :uid=, :uid, :gid=, :gid, :groups ]
to_delegate_to_process.each do |method|
def_delegator Process, method
module_function method
end
def osx_maj_ver
return @osx_maj_ver unless @osx_maj_ver.nil?
require 'facter'
# 'kernel' is available without explicitly loading all facts
if Facter.value('kernel') != 'Darwin'
@osx_maj_ver = false
return @osx_maj_ver
end
# But 'macosx_productversion_major' requires it.
Facter.loadfacts
@osx_maj_ver = Facter.value('macosx_productversion_major')
return @osx_maj_ver
end
module_function :osx_maj_ver
def groups=(grouplist)
if osx_maj_ver == '10.6'
return true
else
return Process.groups = grouplist
end
end
module_function :groups=
if Facter['kernel'].value == 'Darwin'
# Cannot change real UID on Darwin so we set euid
alias :uid :euid
alias :gid :egid
end
def self.root?
Process.uid == 0
end
# Runs block setting uid and gid if provided then restoring original ids
def asuser(new_uid=nil, new_gid=nil)
return yield if Puppet.features.microsoft_windows? or !root?
# We set both because some programs like to drop privs, i.e. bash.
old_uid, old_gid = self.uid, self.gid
old_euid, old_egid = self.euid, self.egid
old_groups = self.groups
begin
self.egid = convert_xid :gid, new_gid if new_gid
self.initgroups(convert_xid(:uid, new_uid)) if new_uid
self.euid = convert_xid :uid, new_uid if new_uid
yield
ensure
self.euid, self.egid = old_euid, old_egid
self.groups = old_groups
end
end
module_function :asuser
# Make sure the passed argument is a number.
def convert_xid(type, id)
map = {:gid => :group, :uid => :user}
raise ArgumentError, "Invalid id type %s" % type unless map.include?(type)
ret = Puppet::Util.send(type, id)
if ret == nil
raise Puppet::Error, "Invalid %s: %s" % [map[type], id]
end
return ret
end
module_function :convert_xid
# Initialize supplementary groups
def initgroups(user)
require 'etc'
Process.initgroups(Etc.getpwuid(user).name, Process.gid)
end
module_function :initgroups
def run_and_capture(command, new_uid=nil, new_gid=nil)
output = Puppet::Util.execute(command, :failonfail => false, :uid => new_uid, :gid => new_gid)
[output, $CHILD_STATUS.dup]
end
module_function :run_and_capture
def system(command, new_uid=nil, new_gid=nil)
status = nil
asuser(new_uid, new_gid) do
Kernel.system(command)
status = $CHILD_STATUS.dup
end
status
end
module_function :system
end
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