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|
require 'puppet/provider/parsedfile'
sudoers = "/etc/sudoers"
#
# crontab does the same thing, it uses a comment to specify uniqueness
#
Puppet::Type.type(:sudoers).provide(
:parsed,
:parent => Puppet::Provider::ParsedFile,
:default_target => '/etc/sudoers',
:filetype => :flat
) do
desc "The sudoers provider that uses the ParsedFile class"
commands :visudo => 'visudo'
# this is just copied from hosts
text_line :comment, :match => %r{^#},
:post_parse => proc { |record|
# shameful NAMEVAR hack :(
if record[:line] =~ /Puppet NAMEVAR (.+)\s*$/
record[:name] = $1
end
}
text_line :blank, :match => /^\s*$/;
#
# parse lines as either a Defaults, Alias, or User spec.
#
# match everything and process entire line
record_line :parsed, :fields => %w{line},
:match => /(.*)/,
:post_parse => proc { |hash|
Puppet.debug("sudoers post_parse for line #{hash[:line]}")
# create records for aliases
if (hash[:line] =~ /^\s*((User|Runas|Host|Cmnd)_Alias)\s+(\S+)\s*=\s*(.+)$/)
Puppet.debug("parsed line as Alias")
Puppet::Type.type(:sudoers).provider(:parsed).parse_alias($1, $3, $4, hash)
elsif (hash[:line] =~ /^\s*(Defaults\S*)\s*(.*)$/)
Puppet.debug("parsed line as Defaults")
Puppet::Type.type(:sudoers).provider(:parsed).parse_defaults($1, $2, hash)
elsif (hash[:line] =~ /^\s*(.*)?=(.*)$/)
Puppet.debug("parsed line as User Spec")
Puppet::Type.type(:sudoers).provider(:parsed).parse_user_spec($1, $2, hash)
else
raise Puppet::Error, "invalid line #{hash[:line]}"
end
# puts hash.to_yaml
# hash
}
# parse alias lines
def self.parse_alias(sudo_alias, name, items, hash)
hash[:type] = 'alias'
hash[:sudo_alias] = sudo_alias
hash[:name] = name
hash[:items] = clean_list(items)
hash
end
# parse existing user spec lines from sudoers
def self.parse_user_spec(users_hosts, commands, hash)
hash[:type] = 'user_spec'
#hash[:name] = user
#hash[:hosts] = hosts.gsub(/\s/, '').split(',')
hash[:commands] = clean_list(commands)
hash_array = users_hosts.split(',')
# every element will be a user until the hit the delim
currentsymbol = :users
hash[:users] = Array.new
hash[:hosts] = Array.new
# parsing users and hosts is kind of complicated, sorry
hash_array.each do |element|
#puts "!! #{element}"
# the element that splits users and hosts will be 2 white space delimited strings
if element =~ /^\s*(\S+)\s+(\S+)\s*$/
user, host = $1, $2
if currentsymbol == :hosts
raise Exception, 'found more than one whitespace delim in users_hosts'
end
# sweet we found the delim between user and host
hash[currentsymbol] << user.gsub(/\s/, '')
# now everything else will be a host
currentsymbol=:hosts
hash[currentsymbol] << host.gsub(/\s/, '')
elsif element =~ /\s*\S+\s*/
hash[currentsymbol] << element.gsub(/\s/, '')
else
raise Exception, "Malformed user spec line lhs: #{lhs}"
end
end
end
# create record for defaults line
def self.parse_defaults(default, parameters, hash)
hash[:name] = default
hash[:type] = 'default'
hash[:parameters] = parameters.gsub(/\s/, '').split(',')
end
# can I override this?
def type=(value)
raise Puppet::Error, 'not supporting switching NAMEVAR between record types'
end
# I could use prefetch_hook to support multi-line entries
# will use the prefetch_hook to determine if
# the line before us is a commented namevar line
# only used for user spec.
# Most of this code is shameless taken from provider crontab.rb
# NAMEVAR comments leave me in need of a shower, but it seems to be the only way.
def self.prefetch_hook(records)
# store comment name vars when we find them
name=nil
results = records.each do |record|
if(record[:record_type] == :comment)
# if we are a namevar comment
#puts "found a comment: #{record.to_yaml}"
if record[:name]
#puts "found a comment with :name"
name = record[:name]
record[:skip] = true
end
# if we are a spec record, check the namevar
elsif record[:type] == 'user_spec'
if name
#puts "adding to a record"
record[:name] = name
name = nil
else
puts "spec record not created by puppet"
# probably a pre-exting record not created by puppet
end
end
end.reject{|record| record[:skip]}
results
end
# overriding how lines are written to the file
def self.to_line(hash)
#puts "\nEntering self.to_line for #{hash[:name]}"
#puts "\n#{hash.to_yaml}\n"
# # dynamically call a function based on the value of hash[:type]
if(hash[:record_type] == :blank || hash[:record_type] == :comment)
hash[:line]
elsif(hash[:type] == 'alias')
self.alias_to_line(hash)
elsif(hash[:type] == 'user_spec')
self.spec_to_line(hash)
elsif(hash[:type] == 'default')
self.default_to_line(hash)
else
raise Puppet::Error, "dont understand how to write out record \n|#{hash.to_yaml}\n|"
end
end
# write line for user spec records
def self.spec_to_line(hash)
#puts hash.to_yaml
#required
#users=self.array_convert(hash[:users])
# required
hosts=self.array_convert(hash[:hosts])
users=self.array_convert(hash[:users])
# required
commands=self.array_convert(hash[:commands])
str = "#Puppet NAMEVAR #{hash[:name]}"
str << "\n#{users} #{hosts}=#{commands}"
Puppet.notice "adding line: #{str}"
str
end
# write line for alias records
def self.alias_to_line(hash)
# do I need to ensure that the required elements are here?
# shouldnt the type do that? check file, its similar
# since different attributes make sense based on ensure value (dir/file/symlink)
items=self.array_convert(hash[:items])
str = "#{hash[:sudo_alias]} #{hash[:name]}=#{items}"
Puppet.notice "adding line: #{str}"
str
end
# write line for default records
# this is not implemented yet.
def self.default_to_line(hash)
parameters=self.array_convert(hash[:parameters])
str = "#{hash[:name]} #{parameters}"
Puppet.notice "Adding line #{str}"
str
end
# convert arrays into to , joined lists
def self.array_convert(list)
if list.class == Array
list.join(',')
else
list
end
end
# split a list on delim, trim leading and trailing white-spaces
def self.clean_list(list, delim=',')
list.split(delim).collect do |x|
x.gsub(/\s*(.*)?\s*/, '\1')
end
end
# used to verify files with visudo before they are flushed
# flush seems to be called more than one time?
def self.flush_target(target)
Puppet.info("We are flushing #{target}")
# a little pre-flush hot visudo action
#puts File.read(target)
visudo("-cf", target) unless (File.zero?(target) or !File.exists?(target))
super(target)
end
end
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