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# A stand-alone module for calculating checksums
# in a generic way.
module Puppet::Util::Checksums
# Calculate a checksum using Digest::MD5.
def md5(content)
require 'digest/md5'
Digest::MD5.hexdigest(content)
end
# Calculate a checksum of the first 500 chars of the content using Digest::MD5.
def md5lite(content)
md5(content[0..499])
end
# Calculate a checksum of a file's content using Digest::MD5.
def md5_file(filename)
require 'digest/md5'
digest = Digest::MD5.new()
return checksum_file(digest, filename)
end
# Calculate a checksum of the first 500 chars of a file's content using Digest::MD5.
def md5lite_file(filename)
File.open(filename, "r") { |f| return md5(f.read(500)) }
end
# Return the :mtime timestamp of a file.
def mtime_file(filename)
File.stat(filename).send(:mtime)
end
# Calculate a checksum using Digest::SHA1.
def sha1(content)
require 'digest/sha1'
Digest::SHA1.hexdigest(content)
end
# Calculate a checksum of the first 500 chars of the content using Digest::SHA1.
def sha1lite(content)
sha1(content[0..499])
end
# Calculate a checksum of a file's content using Digest::SHA1.
def sha1_file(filename)
require 'digest/sha1'
digest = Digest::SHA1.new()
return checksum_file(digest, filename)
end
# Calculate a checksum of the first 500 chars of a file's content using Digest::SHA1.
def sha1lite_file(filename)
File.open(filename, "r") { |f| return sha1(f.read(500)) }
end
# Return the :ctime of a file.
def timestamp_file(filename)
File.stat(filename).send(:ctime)
end
private
# Perform an incremental checksum on a file.
def checksum_file(digest, filename)
File.open(filename, 'r') do |file|
file.each_line do |line|
digest << line
end
end
return digest.hexdigest
end
end
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