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require "digest"
module Hbc
module Verify
class Checksum
def self.me?(cask)
return true unless cask.sha256 == :no_check
ohai "No checksum defined for Cask #{cask}, skipping verification"
false
end
attr_reader :cask, :downloaded_path
def initialize(cask, downloaded_path)
@cask = cask
@downloaded_path = downloaded_path
end
def verify
return unless self.class.me?(cask)
ohai "Verifying checksum for Cask #{cask}"
verify_checksum
end
private
def expected
@expected ||= cask.sha256
end
def computed
@computed ||= Digest::SHA2.file(downloaded_path).hexdigest
end
def verify_checksum
raise CaskSha256MissingError.new(cask.token, expected, computed) if expected.nil? || expected.empty?
if expected == computed
odebug "SHA256 checksums match"
else
ohai 'Note: running "brew update" may fix sha256 checksum errors'
raise CaskSha256MismatchError.new(cask.token, expected, computed, downloaded_path)
end
end
end
end
end
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