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require 'formula'
class IscDhcp < Formula
homepage 'http://www.isc.org/software/dhcp'
url 'http://ftp.isc.org/isc/dhcp/4.3.0/dhcp-4.3.0.tar.gz'
sha1 'deed72a4636461042b74de68c2825dc52623e1d1'
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.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
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version='1.0'>
<dict>
<key>Label</key><string>#{plist_name}</string>
<key>ProgramArguments</key>
<array>
<string>#{opt_sbin}/dhcpd</string>
<string>-f</string>
</array>
<key>Disabled</key><false/>
<key>KeepAlive</key><true/>
<key>RunAtLoad</key><true/>
<key>LowPriorityIO</key><true/>
</dict>
</plist>
EOS
end
def plist_dhcpd6
<<-EOS.undent
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version='1.0'>
<dict>
<key>Label</key><string>#{plist_name}</string>
<key>ProgramArguments</key>
<array>
<string>#{opt_sbin}/dhcpd</string>
<string>-f</string>
<string>-6</string>
<string>-cf</string>
<string>#{etc}/dhcpd6.conf</string>
</array>
<key>Disabled</key><false/>
<key>KeepAlive</key><true/>
<key>RunAtLoad</key><true/>
<key>LowPriorityIO</key><true/>
</dict>
</plist>
EOS
end
end
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