require 'formula' class IscDhcp < Formula homepage 'http://www.isc.org/software/dhcp' url 'http://ftp.isc.org/isc/dhcp/4.2.5-P1/dhcp-4.2.5-P1.tar.gz' version '4.2.5-P1' sha1 '120b6e476b2ac0d35e1dc8dee53752c42449b925' def install # use one dir under var for all runtime state. dhcpd_dir = var+'dhcpd' # Change the locations of various files to match Homebrew # we pass these in through CFLAGS since some cannot be changed # via configure args. path_opts = { '_PATH_DHCPD_CONF' => etc+'dhcpd.conf', '_PATH_DHCLIENT_CONF' => etc+'dhclient.conf', '_PATH_DHCPD_DB' => dhcpd_dir+'dhcpd.leases', '_PATH_DHCPD6_DB' => dhcpd_dir+'dhcpd6.leases', '_PATH_DHCLIENT_DB' => dhcpd_dir+'dhclient.leases', '_PATH_DHCLIENT6_DB' => dhcpd_dir+'dhclient6.leases', '_PATH_DHCPD_PID' => dhcpd_dir+'dhcpd.pid', '_PATH_DHCPD6_PID' => dhcpd_dir+'dhcpd6.pid', '_PATH_DHCLIENT_PID' => dhcpd_dir+'dhclient.pid', '_PATH_DHCLIENT6_PID' => dhcpd_dir+'dhclient6.pid', '_PATH_DHCRELAY_PID' => dhcpd_dir+'dhcrelay.pid', '_PATH_DHCRELAY6_PID' => dhcpd_dir+'dhcrelay6.pid', } path_opts.each do |symbol,path| ENV.append 'CFLAGS', "-D#{symbol}='\"#{path}\"'" end # See discussion at: https://gist.github.com/1157223 if MacOS.version >= :lion ENV.append 'CFLAGS', "-D__APPLE_USE_RFC_3542" end system './configure', "--disable-dependency-tracking", "--prefix=#{prefix}", "--localstatedir=#{dhcpd_dir}" # the 'bind' subdirectory doesn't like overly parallel builds # so build it sequentially. deparallelizing the whole build # can be slow. previous_makeflags = ENV['MAKEFLAGS'] ENV.deparallelize system 'make -C bind' ENV['MAKEFLAGS'] = previous_makeflags # build everything else inreplace 'Makefile', 'SUBDIRS = bind', 'SUBDIRS = ' system 'make' system 'make install' # rename all the installed sample etc/* files so they don't clobber # any existing config files at symlink time. Dir.open(prefix+'etc') do |dir| dir.each do |f| file = "#{dir.path}/#{f}" File.rename(file, "#{file}.sample") if File.stat(file).file? end end # create the state dir and lease files else dhcpd will not start up. dhcpd_dir.mkpath %w(dhcpd dhcpd6 dhclient dhclient6).each do |f| file = "#{dhcpd_dir}/#{f}.leases" File.new(file, File::CREAT|File::RDONLY).close end # dhcpv6 plists (prefix+'homebrew.mxcl.dhcpd6.plist').write plist_dhcpd6 (prefix+'homebrew.mxcl.dhcpd6.plist').chmod 0644 end def caveats; <<-EOS.undent This install of dhcpd expects config files to be in #{etc}. All state files (leases and pids) are stored in #{var}/dhcpd. Dhcpd needs to run as root since it listens on privileged ports. There are two plists because a single dhcpd process may do either DHCPv4 or DHCPv6 but not both. Use one or both as needed. Note that you must create the appropriate config files before starting the services or dhcpd will refuse to run. DHCPv4: #{etc}/dhcpd.conf DHCPv6: #{etc}/dhcpd6.conf Sample config files may be found in #{etc}. EOS end plist_options :startup => true def plist <<-EOS.undent Label#{plist_name} ProgramArguments #{opt_prefix}/sbin/dhcpd -f Disabled KeepAlive RunAtLoad LowPriorityIO EOS end def plist_dhcpd6 <<-EOS.undent Label#{plist_name} ProgramArguments #{opt_prefix}/sbin/dhcpd -f -6 -cf #{etc}/dhcpd6.conf Disabled KeepAlive RunAtLoad LowPriorityIO EOS end end