Class: Moxy::SandboxEval

Inherits:
Object
  • Object
show all
Defined in:
lib/moxy/sandbox_eval.rb

Instance Method Summary collapse

Constructor Details

#initialize(verbose = false) ⇒ SandboxEval

Returns a new instance of SandboxEval.



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# File 'lib/moxy/sandbox_eval.rb', line 5

def initialize(verbose=false)
  @verbose = verbose
end

Instance Method Details

#evaluate(unsafe_code) ⇒ Object 



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# File 'lib/moxy/sandbox_eval.rb', line 12

def evaluate(unsafe_code)
  # run something

  begin
    FakeFS.activate!
    cmd = <<-EOF
    #{setup_code}
    FakeFS::FileSystem.clear
    $SAFE = 3
    $stdout = StringIO.new
    begin
      #{unsafe_code}
    end
    EOF
    puts "evaling:\n-------->>\n#{cmd}\n-------->>" if @verbose

    stdout_id = $stdout.to_i
    $stdout = StringIO.new

    result = Thread.new { eval cmd, TOPLEVEL_BINDING }.value
    [:ok, result]
  rescue SecurityError => e
    return [:illegal, e]
  rescue Exception => e
    return [:error, e]
  ensure
    $stdout = IO.new(stdout_id)
    FakeFS.deactivate!
  end
end

#setup_code ⇒ Object 



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# File 'lib/moxy/sandbox_eval.rb', line 8

def setup_code
  "include WebMock::API"
end