osx/lldpd.rb

   1 require 'formula'
   2
   3 class Lldpd < Formula
   4   homepage 'http://vincentbernat.github.com/lldpd/'
   5   url 'http://media.luffy.cx/files/lldpd/lldpd-0.7.3.tar.gz'
   6   md5 'dcf567779c1b31e8b88e52848160c440'
   7
   8   option 'with-snmp', "Build SNMP subagent support"
   9   option 'with-json', "Build JSON support for lldpcli"
  10
  11   depends_on 'readline'
  12   depends_on 'libevent'
  13   depends_on 'pkg-config'
  14   depends_on 'net-snmp' if build.include? 'with-snmp'
  15   depends_on 'jansson'  if build.include? 'with-json'
  16
  17   def install
  18     readline = Formula.factory 'readline'
  19     args = [ "--prefix=#{prefix}",
  20              "--with-xml",
  21              "--with-readline",
  22              "--with-privsep-chroot=/var/empty",
  23              "CPPFLAGS=-I#{readline.include} -DRONLY=1",
  24              "LDFLAGS=-L#{readline.lib}" ]
  25     args << "--with-snmp" if build.include? 'with-snmp'
  26     args << "--with-json" if build.include? 'with-json'
  27
  28     system "./configure", *args
  29     system "make"
  30     system "make install"
  31   end
  32
  33   def dscl(*args)
  34     result = `dscl . -#{args.join(' ')} 2> /dev/null`
  35     if $? != 0
  36       raise ErrorDuringExecution, "Failure while executing dscl: #{args.join(' ')}"
  37     end
  38     return result
  39   end
  40
  41   # Create user and group if needed
  42   def caveats
  43     u = "_lldpd"
  44     unless Kernel.system "/usr/bin/dscl . -read /Users/#{u} &> /dev/null"
  45       # Find a free UID/GID
  46       uids = dscl("list /Users uid")
  47       gids = dscl("list /Groups gid")
  48       uid = 200
  49       while uids =~ Regexp.new("#{Regexp.escape(uid.to_s)}\n") || gids =~ Regexp.new("#{Regexp.escape(uid.to_s)}\n")
  50         uid += 1
  51       end
  52       s = <<-EOS.undent
  53         You need to create a special user to run lldpd.
  54         Just type the following commands:
  55             sudo dscl . -create /Groups/#{u}
  56             sudo dscl . -create /Groups/#{u} PrimaryGroupID #{uid.to_s}
  57             sudo dscl . -create /Groups/#{u} Password "*"
  58             sudo dscl . -create /Groups/#{u} RealName "lldpd privilege separation group"
  59             sudo dscl . -create /Users/#{u}
  60             sudo dscl . -create /Users/#{u} UserShell /usr/bin/false
  61             sudo dscl . -create /Users/#{u} NFSHomeDirectory /var/empty
  62             sudo dscl . -create /Users/#{u} PrimaryGroupID #{uid.to_s}
  63             sudo dscl . -create /Users/#{u} UniqueID #{uid.to_s}
  64             sudo dscl . -create /Users/#{u} Password "*"
  65             sudo dscl . -create /Users/#{u} RealName "lldpd privilege separation user"
  66       EOS
  67       return s
  68     end
  69   end
  70
  71   plist_options :startup => true
  72   def plist
  73     additional_args = ""
  74     if build.include? 'with-snmp'
  75       additional_args += "<string>-x</string>"
  76     end
  77     return <<-EOS.undent
  78     <?xml version="1.0" encoding="UTF-8"?>
  79     <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  80     <plist version="1.0">
  81     <dict>
  82       <key>Label</key>
  83       <string>#{plist_name}</string>
  84       <key>ProgramArguments</key>
  85       <array>
  86         <string>#{opt_prefix}/sbin/lldpd</string>
  87         #{additional_args}
  88       </array>
  89       <key>RunAtLoad</key><true/>
  90       <key>KeepAlive</key><true/>
  91     </dict>
  92     </plist>
  93     EOS
  94   end
  95
  96 end