Some services have underscores in their name

[aids.git] / lib / aids.rb

diff --git a/lib/aids.rb b/lib/aids.rb
index c2a7e66c020df30a629c59db8c9609c22fcbe1bd..ab3e4a50b2e59dbbb6df7a0e786c72a457924a7a 100644 (file)
--- a/lib/aids.rb
+++ b/lib/aids.rb
@@ -1,33 +1,45 @@
+# Copyright (C) 2012  Steven McDonald <steven@steven-mcdonald.id.au>
+#
+# This program is free software. It comes without any warranty, to the
+# extent permitted by applicable law. You can redistribute it and/or
+# modify it under the terms of the Do What The Fuck You Want To Public
+# License, Version 2, as published by Sam Hocevar. See the file COPYING
+# in the root of this program's source distribution for details, or:
+#
+#   http://sam.zoy.org/wtfpl/COPYING
+
 module AIDS
-       RUNLEVEL_SINGLE          = 'S'
-       RUNLEVEL_MULTI_TO_SINGLE = '1'
-       RUNLEVEL_MULTI           = '2'
-       RUNLEVEL_HALT            = '0'
-       RUNLEVEL_REBOOT          = '6'
+       RUNLEVEL_SINGLE          = :'S'
+       RUNLEVEL_MULTI_TO_SINGLE = :'1'
+       RUNLEVEL_MULTI           = :'2'
+       RUNLEVEL_MULTI_ALL       = [:'2',:'3',:'4',:'5']
+       RUNLEVEL_HALT            = :'0'
+       RUNLEVEL_REBOOT          = :'6'
+       RUNLEVEL_ALL             = [:'0',:'1',:'2',:'3',:'4',:'5',:'6',:'S']
 
        class Service
                attr_reader :name
 
                def initialize(name)
                        if name.nil? or name.empty? or not name.is_a?(String)
-                               raise Exception.new("Service name must be a non-empty string, got #{name.inspect}.")
+                               raise AIDS::Infection.new("Service name must be a non-empty string, got #{name.inspect}.")
                        end
                        name = $1 if name =~ %r{^/etc/init\.d/(.+)$}
-                       if name =~ /[^[:alnum:]\-.]/
-                               raise Exception.new("Invalid init script name: #{name}.")
+                       if name =~ /[^[:alnum:]\-._]/
+                               raise AIDS::Infection.new("Invalid init script name: #{name}.")
                        end
                        unless File.exist?("/etc/init.d/#{name}")
-                               raise Exception.new("Unknown service: #{name}.")
+                               raise AIDS::Infection.new("Unknown service: #{name}.")
                        end
                        @name = name
                end
 
                def enable!
-                       start_on_runlevel!(RUNLEVEL_MULTI)
+                       start_on_runlevels!(RUNLEVEL_MULTI_ALL)
                end
 
                def disable!
-                       stop_on_runlevel!(RUNLEVEL_MULTI)
+                       stop_on_runlevels!(RUNLEVEL_MULTI_ALL)
                end
 
                def enabled?
@@ -35,13 +47,17 @@ module AIDS
                end
 
                def status
-                       if started_on_runlevel?(RUNLEVEL_MULTI)
-                               :enabled
-                       elsif stopped_on_runlevel?(RUNLEVEL_MULTI)
-                               :disabled
-                       else
-                               :unknown
+                       status = {}
+                       RUNLEVEL_ALL.each do |r|
+                               if started_on_runlevel?(r)
+                                       status[r] = :start
+                               elsif stopped_on_runlevel?(r)
+                                       status[r] = :stop
+                               else
+                                       status[r] = :none
+                               end
                        end
+                       status
                end
 
                private
@@ -56,16 +72,20 @@ module AIDS
                        not Dir.glob("/etc/rc#{runlevel}.d/K[0-9][0-9]#{@name}").empty?
                end
 
-               def start_on_runlevel!(runlevel)
-                       AIDS.validate_runlevel(runlevel)
-                       return true if started_on_runlevel?(runlevel)
-                       updatercd(:enable, runlevel)
+               def start_on_runlevels!(runlevels)
+                       [runlevels].flatten.each do |r|
+                               AIDS.validate_runlevel(r)
+                               next if started_on_runlevel?(r)
+                               updatercd(:enable, r)
+                       end
                end
 
-               def stop_on_runlevel!(runlevel)
-                       AIDS.validate_runlevel(runlevel)
-                       return true if stopped_on_runlevel?(runlevel)
-                       updatercd(:disable, runlevel)
+               def stop_on_runlevels!(runlevels)
+                       [runlevels].flatten.each do |r|
+                               AIDS.validate_runlevel(r)
+                               next if stopped_on_runlevel?(r)
+                               updatercd(:disable, r)
+                       end
                end
 
                def set_default_runlevels!
@@ -75,13 +95,13 @@ module AIDS
 
                def updatercd(action, runlevel=nil)
                        unless [:enable, :disable, :remove, :defaults].include?(action)
-                               raise Exception.new("Invalid action for updatercd: #{action}.")
+                               raise AIDS::Infection.new("Invalid action for updatercd: #{action}.")
                        end
                        AIDS.validate_runlevel(runlevel) if runlevel
                        # update-rc.d will baulk at being told to do anything with
                        # these runlevels.
-                       if ['0', '1', '6'].include?(runlevel.to_s)
-                               raise Exception.new("Unable to comply: update-rc.d is balls.")
+                       if [:'0',:'1',:'6'].include?(runlevel)
+                               raise AIDS::Infection.new("Unable to comply: update-rc.d is balls.")
                        end
                        pid = Process.fork do
                                $stdout.close
@@ -95,11 +115,14 @@ module AIDS
                        end
                        Process.wait(pid)
                        if (rc = $?.exitstatus) != 0
-                               raise Exception.new("update-rc.d returned #{rc}")
+                               raise AIDS::Infection.new("update-rc.d returned #{rc}")
                        end
                end
        end
 
+       class Infection < Exception
+       end
+
        def self.get_all_services
                Dir.glob("/etc/init.d/*").map do |f|
                        next unless File.executable?(f)
@@ -107,9 +130,11 @@ module AIDS
                end.compact
        end
 
+       private
+
        def self.validate_runlevel(runlevel)
-               unless ['0', '1', '2', '3', '4', '5', '6', 'S'].include?(runlevel.to_s)
-                       raise Exception.new("Invalid runlevel: #{runlevel}.")
+               unless RUNLEVEL_ALL.include?(runlevel)
+                       raise AIDS::Infection.new("Invalid runlevel: #{runlevel}.")
                end
        end
 end