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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',
# what the heck does this mean?
: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|
# # we determine the name from the comment above user spec lines
# if record[:line] =~ /Puppet namevar (.+)\s*$/
# record[:name] = $1
# end
# }
text_line :blank, :match => /^\s*$/;
# ignore for now, I will support this line later
# text_line :defaults, :match => /^Defaults/
# I need to parse the , delim list into an array
# I am pretty sure that I would do this with a block statement
#
# it seems like I have to put type here for it to be accessible to
# to_line
#
# not bothering to specify match or fields, I will determine all of this
# in post_parse
# parse everyline not captured as blank or a comment
# record_line :parsed, :fields => %w{sudo_alias name items},
# :match => /^\s*(User_Alias|Runas_Alias|Host_Alias|Cmnd_Alias)\s+(\S+)\s*=\s*(.+)$/,
record_line :parsed, :fields => %w{line},
:match => /(.*)/,
# # process these lines manually
:post_parse => proc { |hash|
puts "\npost_parse"
# puts hash[:line]
# # create records for aliases
if (hash[:line] =~ /^\s*(User_Alias|Runas_Alias|Host_Alias|Cmnd_Alias)\s+(\S+)\s*=\s*(.+)$/)
Puppet::Type.type(:sudoers).provider(:parsed).parse_alias($1, $2, $3, hash)
# # create records for user specs
# we only allow one user to be specified.
elsif (hash[:line] =~ /^\s*(\S+)(.*)?=(.*)$/)
Puppet::Type.type(:sudoers).provider(:parsed).parse_user_spec($1, $2, $3, hash)
# # this is just a place holder, I have not implemted Defaults yet
elsif (hash[:line] =~ /^\s*(Defaults\S*)\s*(.*)$/)
Puppet::Type.type(:sudoers).provider(:parsed).parse_defaults($1, $2, hash)
else
raise Exception, "invalid line #{hash[:line]}"
end
# puts hash.to_yaml
# hash
}
# parse alias lines
def self.parse_alias(sudo_alias, name, items, hash)
hash[:type] = 'alias'
hash[:sudo_alias] = sudo_alias
hash[:name] = name
hash[:items] = items.gsub(/\s/, '').split(',')
hash
end
# parse existing user spec lines from sudoers
def self.parse_user_spec(user, hosts, commands, hash)
hash[:type] = 'spec'
hash[:name] = user
hash[:hosts] = hosts.gsub(/\s/, '').split(',')
hash[:commands] = commands.gsub(/\s/, '').split(',')
hash
# lhs_array = lhs.split(',')
# # every element will be a user until the hit the delim
# currentsymbol = :users
# hash[:users] = Array.new
# hash[:hosts] = Array.new
# # parsing users and hosts is kind of complicated, sorry
# lhs_array.each do |element|
##puts "!! #{element}"
# # the element that splits users and hosts will be 2 white space delimited strings
# if element =~ /^\s*(\S+)\s+(\S+)\s*$/
# user, host = $1, $2
# raise Exception, 'found more than one whitespace delim when parsing left hand side of user spec' if currentsymbol==:hosts
# # 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
def self.parse_defaults(default, parameters, hash)
hash[:name] = default
hash[:parameters] = parameters.gsub(/\s/, '').split(',')
end
# will use the prefetch_hook to determine if
# the line before us is a commented namevar line
# only used for user spec.
# lot of this code is shameless taken from provider crontab.rb
#
# I could use prefetch_hook to support multoi-line entries
# 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] == '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)
#puts "!!!!!!!!#{hash[:line]}"
hash[:line]
elsif(hash[:type] == 'alias')
self.alias_to_line(hash)
elsif(hash[:type] == 'spec')
self.spec_to_line(hash)
elsif(hash[:type] == 'default')
self.default_to_line(hash)
# # parsed records that did not match a declared resource
# elsif(hash[:line])
# hash[:line]
else
raise Exception, "dont understand how to write out record #{hash.to_yaml}"
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])
# required
commands=self.array_convert(hash[:commands])
puts "adding line: #{hash[:name]} #{hosts}=#{commands}"
"#{hash[:name]} #{hosts}=#{commands}"
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])
#puts "adding line: #{hash[:sudo_alias]} #{hash[:name]}=#{items}"
"#{hash[:sudo_alias]} #{hash[:name]}=#{items}"
end
# write line for default records
# this is not implemented yet.
def self.default_to_line(hash)
parameters=self.array_convert(hash[:parameters])
"#{hash[:name]} #{parameters}"
end
# convert arrays into to , joined lists
def self.array_convert(list)
if list.class == Array
list.join(',')
else
list
end
end
# used to verify files with visudo before they are flushed
def self.flush(record)
# a little pre-flush hot visudo action
super(record)
end
end
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