17日目: API

public static function getAuthenticatedUser($login, $password)
{
  $c = new Criteria();
  $c->add(UserPeer::NICKNAME, $login);
  $user = UserPeer::doSelectOne($c);
 
  // ニックネームが存在するか？
  if ($user)
  {
    // パスワードはOKか？
    if (sha1($user->getSalt().$password) == $user->getSha1Password())
    {
      return $user;
    }
  }
 
  return null;
}

<?php
 
class apiActions extends sfActions
{
  public function preExecute()
  {
    sfConfig::set('sf_web_debug', false);
  }
 
  public function executeIndex()
  {
    $user = $this->authenticateUser();
    if (!$user)
    {
      $this->error_code    = 1;
      $this->error_message = 'login failed';
 
      $this->forward('api', 'error');
    }
    // 何かを行います
  }
 
  private function authenticateUser()
  {
    if (isset($_SERVER['PHP_AUTH_USER']))
    {
      if ($user = UserPeer::getAuthenticatedUser($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']))
      {
        $this->getContext()->getUser()->signIn($user);
 
        return $user;
      }
    }
 
    header('WWW-Authenticate: Basic realm="askeet API"');
    header('HTTP/1.0 401 Unauthorized');
  }
 
  public function executeError()
  {
  }
}
 
?>

<?php echo '<?' ?>xml version="1.0" encoding="utf-8" ?>
<rsp stat="fail" version="1.0">
  <err code="<?php echo $error_code ?>" msg="<?php echo $error_message ?>" />
</rsp>

public function executeQuestion()
{
  $user = $this->authenticateUser();
  if (!$user)
  {
    $this->error_code    = 1;
    $this->error_message = 'login failed';
 
    $this->forward('api', 'error');
  }
 
  if (!$this->getRequestParameter('stripped_title'))
  {
    $this->error_code    = 2;
    $this->error_message = 'The API returns answers to a specific question. Please provide a stripped_title parameter';
 
    $this->forward('api', 'error');
  }
  else
  {
    // 質問を取得する
    $question = QuestionPeer::getQuestionFromTitle($this->getRequestParameter('stripped_title'));
 
    if ($question->getUserId() != $user->getId())
    {
      $this->error_code    = 3;
      $this->error_message = 'You can only use the API for the questions you asked';
 
      $this->forward('api', 'error');
    }
    else
    {
      // 回答を取得する
      $this->answers  = $question->getAnswers();
      $this->question = $question;
    }
  }
}

<?php echo '<?' ?>xml version="1.0" encoding="utf-8" ?>
<rsp stat="ok" version="1.0">
  <question href="<?php echo url_for('@question?stripped_title='.$question->getStrippedTitle(), true) ?>" time="<?php echo strftime('%Y-%m-%dT%H:%M:%SZ', $question->getCreatedAt('U')) ?>">
    <title><?php echo $question->getTitle() ?></title>
    <tags>
      <?php foreach ($sf_user->getSubscriber()->getTagsFor($question) as $tag): ?>
      <tag><?php echo $tag ?></tag>
      <?php endforeach ?>
    </tags>
    <answers>
      <?php foreach ($answers as $answer): ?>
      <answer relevancy="<?php echo $answer->getRelevancyUpPercent() ?>" time="<?php echo strftime('%Y-%m-%dT%H:%M:%SZ', $answer->getCreatedAt('U')) ?>"><?php echo $answer->getBody() ?></answer>
      <?php endforeach ?>
    </answers>
  </question>
</rsp>

<?php $xml = simplexml_load_file(dirname(__FILE__).'/question.xml') ?>
 
<h1><?php echo $xml->question->title ?></h1>
<p>Published on <?php echo $xml->question['time'] ?></p>
 
<h2>Tags</h2>
<ul>
  <?php foreach ($xml->question->tags->tag as $tag): ?>
  <li><?php echo $tag ?></li>
  <?php endforeach ?>
</ul>
 
<h2>Answers to this question from askeet users</h2>
<ul>
<?php foreach ($xml->question->answers->answer as $answer): ?>
  <li>
    <?php echo $answer ?>
    <br />
    Relevancy: <?php echo $answer['relevancy'] ?>% - Pulished on <?php echo $answer['time'] ?>
  </li>
<?php endforeach ?>
</ul>

<?php if ($subscriber->getHasPaypal()): ?>
<p>If you appreciated this user's contributions, you can grant him a small donation.</p>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
  <input type="hidden" name="cmd" value="_xclick">
  <input type="hidden" name="business" value="<?php echo $subscriber->getEmail() ?>">
  <input type="hidden" name="item_name" value="askeet">
  <input type="hidden" name="return" value="http://www.askeet.com">
  <input type="hidden" name="no_shipping" value="1">
  <input type="hidden" name="no_note" value="1">
  <input type="hidden" name="tax" value="0">
  <input type="hidden" name="bn" value="PP-DonationsBF">
  <input type="image" src="http://images.paypal.com/legacy/images/x-click-but04.gif" border="0" name="submit" alt="Donate to this user">
</form>
<?php endif ?>