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   1  <?php
   2  /*
   3   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   4   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   5   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   6   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   7   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   8   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   9   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  10   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  11   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  12   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  13   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  14   *
  15   * This software consists of voluntary contributions made by many individuals
  16   * and is licensed under the MIT license.
  17   */
  18  
  19  namespace ProxyManager\GeneratorStrategy;
  20  
  21  use Zend\Code\Generator\ClassGenerator;
  22  
  23  /**
  24   * Generator strategy that produces the code and evaluates it at runtime
  25   *
  26   * @author Marco Pivetta <ocramius@gmail.com>
  27   * @license MIT
  28   */
  29  class EvaluatingGeneratorStrategy implements GeneratorStrategyInterface
  30  {
  31      /**
  32       * @var bool flag indicating whether {@see eval} can be used
  33       */
  34      private $canEval = true;
  35  
  36      /**
  37       * Constructor
  38       */
  39      public function __construct()
  40      {
  41          $this->canEval = ! ini_get('suhosin.executor.disable_eval');
  42      }
  43  
  44      /**
  45       * Evaluates the generated code before returning it
  46       *
  47       * {@inheritDoc}
  48       */
  49      public function generate(ClassGenerator $classGenerator)
  50      {
  51          $code = $classGenerator->generate();
  52  
  53          if (! $this->canEval) {
  54              // @codeCoverageIgnoreStart
  55              $fileName = sys_get_temp_dir() . '/EvaluatingGeneratorStrategy.php.tmp.' . uniqid('', true);
  56  
  57              file_put_contents($fileName, "<?php\n" . $code);
  58              require $fileName;
  59              unlink($fileName);
  60  
  61              return $code;
  62              // @codeCoverageIgnoreEnd
  63          }
  64  
  65          eval($code);
  66  
  67          return $code;
  68      }
  69  }