twitter-oauth.inc in Tweet Feed 7.3

File

inc/twitter-oauth.inc

<?php

/*
 * Abraham Williams ([e-mail]) http://abrah.am
 *
 * The first PHP Library to support OAuth for Twitter's REST API.
 */

/* Load OAuth lib. You can find it at http://oauth.net */

//require_once('OAuth.php');

/**
 * Twitter OAuth class
 */
class TwitterOAuth {

  /* Contains the last HTTP status code returned. */
  public $http_code;

  /* Contains the last API call. */
  public $url;

  /* Set up the API root URL. */
  public $host = "https://api.twitter.com/1.1/";

  /* Set timeout default. */
  public $timeout = 30;

  /* Set connect timeout. */
  public $connecttimeout = 30;

  /* Verify SSL Cert. */
  public $ssl_verifypeer = FALSE;

  /* Respons format. */
  public $format = 'json';

  /* Decode returned json data. */
  public $decode_json = TRUE;

  /* Contains the last HTTP headers returned. */
  public $http_info;

  /* Set the useragnet. */
  public $useragent = 'TwitterOAuth v0.2.0-beta2';

  /* Immediately retry the API call if the response was not successful. */

  //public $retry = TRUE;

  // Get the HTML headers of the response from Twitter.
  public $http_headers;

  /**
   * Set API URLS
   */
  function accessTokenURL() {
    return 'https://api.twitter.com/oauth/access_token';
  }
  function authenticateURL() {
    return 'https://api.twitter.com/oauth/authenticate';
  }
  function authorizeURL() {
    return 'https://api.twitter.com/oauth/authorize';
  }
  function requestTokenURL() {
    return 'https://api.twitter.com/oauth/request_token';
  }

  /**
   * Debug helpers
   */
  function lastStatusCode() {
    return $this->http_status;
  }
  function lastAPICall() {
    return $this->last_api_call;
  }

  /**
   * construct TwitterOAuth object
   */
  function __construct($consumer_key, $consumer_secret, $oauth_token = NULL, $oauth_token_secret = NULL) {
    $this->sha1_method = new OAuthSignatureMethod_HMAC_SHA1();
    $this->consumer = new OAuthConsumer($consumer_key, $consumer_secret);
    if (!empty($oauth_token) && !empty($oauth_token_secret)) {
      $this->token = new OAuthConsumer($oauth_token, $oauth_token_secret);
    }
    else {
      $this->token = NULL;
    }
  }

  /**
   * Get a request_token from Twitter
   *
   * @returns a key/value array containing oauth_token and oauth_token_secret
   */
  function getRequestToken($oauth_callback) {
    $parameters = array();
    $parameters['oauth_callback'] = $oauth_callback;
    $request = $this
      ->oAuthRequest($this
      ->requestTokenURL(), 'GET', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * Get the authorize URL
   *
   * @returns a string
   */
  function getAuthorizeURL($token, $sign_in_with_twitter = TRUE) {
    if (is_array($token)) {
      $token = $token['oauth_token'];
    }
    if (empty($sign_in_with_twitter)) {
      return $this
        ->authorizeURL() . "?oauth_token={$token}";
    }
    else {
      return $this
        ->authenticateURL() . "?oauth_token={$token}";
    }
  }

  /**
   * Exchange request token and secret for an access token and
   * secret, to sign API calls.
   *
   * @returns array("oauth_token" => "the-access-token",
   *                "oauth_token_secret" => "the-access-secret",
   *                "user_id" => "9436992",
   *                "screen_name" => "abraham")
   */
  function getAccessToken($oauth_verifier) {
    $parameters = array();
    $parameters['oauth_verifier'] = $oauth_verifier;
    $request = $this
      ->oAuthRequest($this
      ->accessTokenURL(), 'GET', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * One time exchange of username and password for access token and secret.
   *
   * @returns array("oauth_token" => "the-access-token",
   *                "oauth_token_secret" => "the-access-secret",
   *                "user_id" => "9436992",
   *                "screen_name" => "abraham",
   *                "x_auth_expires" => "0")
   */
  function getXAuthToken($username, $password) {
    $parameters = array();
    $parameters['x_auth_username'] = $username;
    $parameters['x_auth_password'] = $password;
    $parameters['x_auth_mode'] = 'client_auth';
    $request = $this
      ->oAuthRequest($this
      ->accessTokenURL(), 'POST', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * GET wrapper for oAuthRequest.
   */
  function get($url, $parameters = array()) {
    $response = $this
      ->oAuthRequest($url, 'GET', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * POST wrapper for oAuthRequest.
   */
  function post($url, $parameters = array()) {
    $response = $this
      ->oAuthRequest($url, 'POST', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * DELETE wrapper for oAuthReqeust.
   */
  function delete($url, $parameters = array()) {
    $response = $this
      ->oAuthRequest($url, 'DELETE', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * Format and sign an OAuth / API request
   */
  function oAuthRequest($url, $method, $parameters) {
    if (strrpos($url, 'https://') !== 0 && strrpos($url, 'http://') !== 0) {
      $url = "{$this->host}{$url}.{$this->format}";
    }
    $request = OAuthRequest::from_consumer_and_token($this->consumer, $this->token, $method, $url, $parameters);
    $request
      ->sign_request($this->sha1_method, $this->consumer, $this->token);
    switch ($method) {
      case 'GET':
        return $this
          ->http($request
          ->to_url(), 'GET');
      default:
        return $this
          ->http($request
          ->get_normalized_http_url(), $method, $request
          ->to_postdata());
    }
  }

  /**
   * Make an HTTP request
   *
   * @return API results
   */
  function http($url, $method, $postfields = NULL) {
    $this->http_info = array();
    $ci = curl_init();

    /* Curl settings */
    curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent);
    curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout);
    curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout);
    curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ci, CURLOPT_HTTPHEADER, array(
      'Expect:',
    ));
    curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer);
    curl_setopt($ci, CURLOPT_HEADERFUNCTION, array(
      $this,
      'getHeader',
    ));
    curl_setopt($ci, CURLOPT_HEADER, TRUE);
    switch ($method) {
      case 'POST':
        curl_setopt($ci, CURLOPT_POST, TRUE);
        if (!empty($postfields)) {
          curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
        }
        break;
      case 'DELETE':
        curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'DELETE');
        if (!empty($postfields)) {
          $url = "{$url}?{$postfields}";
        }
    }
    curl_setopt($ci, CURLOPT_URL, $url);
    $response = curl_exec($ci);

    // Get the response headers and parse them out. Then adjust the body accordingly
    $header_size = curl_getinfo($ci, CURLINFO_HEADER_SIZE);
    $body = substr($response, $header_size);
    $this->http_headers = $this
      ->get_headers_from_curl_response($response);
    $this->http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
    $this->http_info = array_merge($this->http_info, curl_getinfo($ci));
    $this->url = $url;
    curl_close($ci);
    return $body;
  }
  public function get_headers_from_curl_response($response) {
    $headers = array();
    $header_text = substr($response, 0, strpos($response, "\r\n\r\n"));
    foreach (explode("\r\n", $header_text) as $i => $line) {
      if ($i === 0) {
        $headers['http_code'] = $line;
      }
      else {
        list($key, $value) = explode(': ', $line);
        $headers[$key] = $value;
      }
    }
    return $headers;
  }

  /**
   * Get the header info to store.
   */
  function getHeader($ch, $header) {
    $i = strpos($header, ':');
    if (!empty($i)) {
      $key = str_replace('-', '_', strtolower(substr($header, 0, $i)));
      $value = trim(substr($header, $i + 2));
      $this->http_header[$key] = $value;
    }
    return strlen($header);
  }

}

Classes

Name	Description
TwitterOAuth	Twitter OAuth class