Linkedin php api没有在codeigniter中设置访问令牌

Question

这是我第一次使用linkedIn api，我试图在官方文档中遵循这个例子：

[http://developer.linkedin.com/documents/code-samples][1]

我已经将相同的过程代码重构为名为Auth的codeigniter控制器类：

<?php if (!defined('BASEPATH')) die();

class Auth extends CI_Controller
{

    public function __construct () 
    {

      parent::__construct();

      define('API_KEY',      $this->config->item('key'));
      define('API_SECRET',   $this->config->item('secret'));
      define('REDIRECT_URI', 'http://' . $_SERVER['SERVER_NAME'] . ':8000/auth');
      define('SCOPE',        'r_basicprofile r_emailaddress rw_groups');

    }

    public function index()
    {
      var_dump($this->session->all_userdata());
      if (!empty($this->session->userdata('state'))) {
        $user = $this->fetch('GET', '/v1/people/~:(firstName,lastName)');
        print "Hello $user->firstName $user->lastName.";
      } else {
        // $this->session->sess_destroy();
        echo anchor('auth/oauth', 'Sign in with Linkedin');
      }

    }


    public function oauth()
    {
      // OAuth 2 Control Flow
      if (isset($_GET['error'])) {
          // LinkedIn returned an error
          print $_GET['error'] . ': ' . $_GET['error_description'];
          exit;
      } elseif (isset($_GET['code'])) {
          // User authorized your application
          if ($this->session->userdata('state') == $_GET['state']) {
              // Get token so you can make API calls
              $this->getAccessToken();
          } else {
              // CSRF attack? Or did you mix up your states?
              exit;
          }
      } else { 
          if ((empty($this->session->userdata('expires_at'))) || (time() > $this->session->userdata('expires_at'))) {
              // Token has expired, clear the state
              $this->session->sess_destroy();
          }
          if (empty($this->session->userdata('access_token'))) {
              echo "here I am";
              // Start authorization process
              $this->getAuthorizationCode();
          }
      }

    }

    protected function getAccessToken() {
        $params = array('grant_type' => 'authorization_code',
                        'client_id' => API_KEY,
                        'client_secret' => API_SECRET,
                        'code' => $_GET['code'],
                        'redirect_uri' => REDIRECT_URI,
                  );

        // Access Token request
        $url = 'https://www.linkedin.com/uas/oauth2/accessToken?' . http_build_query($params);

        // Tell streams to make a POST request
        $context = stream_context_create(
                        array('http' => 
                            array('method' => 'POST',
                            )
                        )
                    );

        // Retrieve access token information
        $response = file_get_contents($url, false, $context);
        // Native PHP object, please
        $token = json_decode($response);

        // Store access token and expiration time

        // $_SESSION['access_token'] = $token->access_token; // guard this! 
        // $_SESSION['expires_in']   = $token->expires_in; // relative time (in seconds)
        // $_SESSION['expires_at']   = time() + $_SESSION['expires_in']; // absolute time

        $this->session->set_userdata('access_token', $token->access_token);
        $this->session->set_userdata('expires_in', $token->expires_in);
        $this->session->set_userdata('expires_at', time() + $this->session->userdata('expires_in'));

        return true;
    }

    protected function getAuthorizationCode() {
      $params = array('response_type' => 'code',
                      'client_id' => API_KEY,
                      'scope' => SCOPE,
                      'state' => uniqid('', true), // unique long string
                      'redirect_uri' => REDIRECT_URI,
                );

      // Authentication request
      $url = 'https://www.linkedin.com/uas/oauth2/authorization?' . http_build_query($params);

      // Needed to identify request when it returns to us
      // $_SESSION['state'] = $params['state'];
      $this->session->set_userdata('state', $params['state']);

      // Redirect user to authenticate
      redirect($url);
    }


    protected function fetch($method, $resource, $body = '') {
        $params = array('oauth2_access_token' => $this->session->userdata('access_token'),
                        'format' => 'json',
                  );

        // Need to use HTTPS
        $url = 'https://api.linkedin.com' . $resource . '?' . http_build_query($params);
        // Tell streams to make a (GET, POST, PUT, or DELETE) request
        $context = stream_context_create(
                        array('http' => 
                            array('method' => $method,
                            )
                        )
                    );


        // Hocus Pocus
        $response = file_get_contents($url, false, $context);

        // Native PHP object, please
        return json_decode($response);
    }

    public function logout()
    {
      $_SESSION = array();
      $this->load->view('comment_index');
    }

}

我正在使用数据库来存储会话，我希望access_token是存储在名为user_data序列化字段中的值之一。 但我一无所获。 当前会话的输出是：

array (size=5)
  'session_id' => string '1dfcbc17bf0346424726c7cace63501b' (length=32)
  'ip_address' => string '`127.0.0.1`' (length=9)
  'user_agent' => string 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:25.0) Gecko/20100101 Firefox/25.0' (length=81)
  'last_activity' => int 1386687134
  'user_data' => string '' (length=0)

我不明白为什么linkedin不给我回来存储令牌。 由于redirect_url，我无法正确调试此代码。 到目前为止，有效的是：

1. 用户被重定向到授权窗口，其中包含以下内容： https ： http%3A%2F%2F127.0.0.1%3A8000%2Fauth & redirect_uri = http%3A%2F%2F127.0.0.1%3A8000%2Fauth

2. 用户被重定向到auth操作，没有任何错误与此URL： http://127.0.0.1:8000/auth? ： http://127.0.0.1:8000/auth? ： http://127.0.0.1:8000/auth? auth http://127.0.0.1:8000/auth? 代码= AQTWPFJqnZlBZmFByb3Vbjkf4jtNvn8C7atg5iM6iXFW3ON_SrM3uJ9h8AiF1RbMjgGt_NpDq4cTPL1qw8uNiA_vsOv1H3lpxu0IxHVx_sa9rDAinbo＆状态= 52a72d109261d4.41607693

但我的个人资料数据在哪里？ 如何以及在何处进行api调用以检索配置文件数据？ 请帮忙

Answer 1

我在Codeigniter中做同样的事情。

以下是获取Auth用户档案的程序。

1. 为Linkedin创建一个库

    defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Linked API Class * * * @package CodeIgniter * @subpackage Libraries * @category Libraries * @author Muhamamd Hafeez */ class Linkedin { function __construct(){ } public function getAuthorizationCode() { $params = array('response_type' => 'code', 'client_id' => API_KEY, 'scope' => SCOPE, 'state' => uniqid('', true), // unique long string 'redirect_uri' => REDIRECT_URI, ); // Authentication request $url = 'https://www.linkedin.com/uas/oauth2/authorization?' . http_build_query($params); // Needed to identify request when it returns to us $_SESSION['state'] = $params['state']; // Redirect user to authenticate header("Location: $url"); exit; } public function getAccessToken() { $params = array('grant_type' => 'authorization_code', 'client_id' => API_KEY, 'client_secret' => API_SECRET, 'code' => $_GET['code'], 'redirect_uri' => REDIRECT_URI, ); // Access Token request $url = 'https://www.linkedin.com/uas/oauth2/accessToken?' . http_build_query($params); // Tell streams to make a POST request $context = stream_context_create( array('http' => array('method' => 'POST', ) ) ); // Retrieve access token information $response = file_get_contents($url, false, $context); // Native PHP object, please $token = json_decode($response); // Store access token and expiration time $_SESSION['access_token'] = $token->access_token; // guard this! $_SESSION['expires_in'] = $token->expires_in; // relative time (in seconds) $_SESSION['expires_at'] = time() + $_SESSION['expires_in']; // absolute time return true; } public function fetch($method, $resource, $body = '') { $params = array('oauth2_access_token' => $_SESSION['access_token'], 'format' => 'json', ); // Need to use HTTPS $url = 'https://api.linkedin.com' . $resource . '?' . http_build_query($params); // Tell streams to make a (GET, POST, PUT, or DELETE) request $context = stream_context_create( array('http' => array('method' => $method, ) ) ); // Hocus Pocus $response = file_get_contents($url, false, $context); // Native PHP object, please return json_decode($response); } } /* End of file Linked.php */ /* Location: ./application/libraries/linkedin.php */ 

2. 将所有常量内容放在confin / constants.php中

    define('API_KEY', 'Put Yoour API_KEY here'); define('API_SECRET', 'Put Yoour API_SECRET here'); define('REDIRECT_URI', 'Put Yoour REDIRECT_URI here'); define('SCOPE', 'r_fullprofile r_emailaddress rw_nus r_contactinfo r_network'); 

3. 现在是控制器

    class Profile extends CI_Controller { function __construct() { parent:: __construct(); $this->load->library('linkedin'); // load library session_name('linkedin'); session_start(); } // linkedin login script function profile() { // OAuth 2 Control Flow if (isset($_GET['error'])) { // LinkedIn returned an error // load any error view here exit; } elseif (isset($_GET['code'])) { // User authorized your application if ($_SESSION['state'] == $_GET['state']) { // Get token so you can make API calls $this->linkedin->getAccessToken(); } else { // CSRF attack? Or did you mix up your states? exit; } } else { if ((empty($_SESSION['expires_at'])) || (time() > $_SESSION['expires_at'])) { // Token has expired, clear the state $_SESSION = array(); } if (empty($_SESSION['access_token'])) { // Start authorization process $this->linkedin->getAuthorizationCode(); } } // define the array of profile fields $profile_fileds = array( 'id', 'firstName', 'maiden-name', 'lastName', 'picture-url', 'email-address', 'location:(country:(code))', 'industry', 'summary', 'specialties', 'interests', 'public-profile-url', 'last-modified-timestamp', 'num-recommenders', 'date-of-birth', ); $profileData = $this->linkedin->fetch('GET', '/v1/people/~:(' . implode(',', $profile_fileds) . ')'); if ($profileData) { // save profile or do whatever you want } else { // linked return an empty array of profile data } } }