public function get_access_token($token = false, $secret = false, $verifier = false)
{
if ($token === false && isset($_GET['oauth_token'])) {
$token = $_GET['oauth_token'];
}
if ($verifier === false && isset($_GET['oauth_verifier'])) {
$verifier = $_GET['oauth_verifier'];
}
if ($token === false && $verifier === false) {
$uri = $_SERVER['REQUEST_URI'];
$uriparts = explode('?', $uri);
$authfields = array();
parse_str($uriparts[1], $authfields);
$token = $authfields['oauth_token'];
$verifier = $authfields['oauth_verifier'];
}
$tokenddata = array('oauth_token' => urlencode($token), 'oauth_verifier' => urlencode($verifier));
if ($secret !== false) {
$tokenddata['oauth_token_secret'] = urlencode($secret);
}
$baseurl = self::SCHEME . '://' . self::HOST . self::ACCESS_URI;
$auth = get_auth_header($baseurl, $this->_consumer['key'], $this->_consumer['secret'], $tokenddata, $this->_consumer['method'], $this->_consumer['algorithm']);
$response = $this->_connect($baseurl, $auth);
parse_str($response, $oauth);
return $oauth;
}
/**
* Builds out an http header based on the specified parameters.
*
* @param $url string the url this header will go to.
* @param $prepend any header data that needs to be added to the header before it is built.
* @param $append any header data that needs to be added after the header is built.
* @param $method the http method to be used 'POST', 'GET', 'PUT' etc.
* return string the http header.
**/
private function _build_header($url = false, $prepend = false, $append = false, $method = self::METHOD)
{
$str = $prepend === false ? '' : $prepend;
foreach ($this->_header as $key => $value) {
$str .= $key . ": " . $value . self::LINE_END;
}
if ($this->_access !== false && $url !== false) {
$this->CI->load->helper('oauth_helper');
$str .= get_auth_header($url, $this->_oauth['key'], $this->_oauth['secret'], $this->_access, $method, $this->_oauth['algorithm']);
}
$str .= $append === false ? '' : $append;
return $str;
}
private function _build_header($url, $method, $prepend, $append, $overwrite = array())
{
$str = $prepend === false ? '' : $prepend;
foreach ($this->_header as $key => $value) {
if (array_key_exists($key, $overwrite)) {
$str .= $key . ': ' . $overwrite[$key] . self::LINE_END;
} else {
$str .= $key . ': ' . $value . self::LINE_END;
}
}
if ($this->_access !== false && $url !== false) {
$str .= get_auth_header($url, $this->_consumer['key'], $this->_consumer['secret'], $this->_access, $method, $this->_consumer['algorithm']);
}
$str .= $append === false ? '' : $append;
return $str;
}
/**
* This is called to finish the oauth token exchange. This too should
* only need to be called once for a user. The token returned should
* be stored in your database for that particular user.
*
* @param string $token this is the oauth_token returned with your
* callback url
* @param string $secret this is the token secret supplied from the
* request (Only required if using HMAC)
* @param string $verifier this is the oauth_verifier returned with
* your callback url
*
* @return array access token and token secret
*/
public function get_access_token($token = false, $secret = false, $verifier = false)
{
//If no request token was specified then attempt to get one from the url
if ($token === false && isset($_GET['oauth_token'])) {
$token = $_GET['oauth_token'];
}
if ($verifier === false && isset($_GET['oauth_verifier'])) {
$verifier = $_GET['oauth_verifier'];
}
//If all else fails attempt to get it from the request uri.
if ($token === false && $verifier === false) {
$uri = $_SERVER['REQUEST_URI'];
$uriparts = explode('?', $uri);
$authfields = array();
parse_str($uriparts[1], $authfields);
$token = $authfields['oauth_token'];
$verifier = $authfields['oauth_verifier'];
}
$tokenddata = array('oauth_token' => urlencode($token), 'oauth_verifier' => urlencode($verifier));
if ($secret !== false) {
$tokenddata['oauth_token_secret'] = urlencode($secret);
}
$baseurl = self::SCHEME . '://' . self::HOST . self::ACCESS_URI;
//Include the token and verifier into the header request.
$auth = get_auth_header($baseurl, $this->_consumer['key'], $this->_consumer['secret'], $tokenddata, $this->_consumer['method'], $this->_consumer['algorithm']);
$response = $this->_connect($baseurl, $auth);
//Parse the response into an array it should contain
//both the access token and the secret key. (You only
//need the secret key if you use HMAC-SHA1 signatures.)
parse_str($response, $oauth);
//Return the token and secret for storage
return $oauth;
}
