/**
* Gets an OAuth request token using the API Key and API Secret provided in the plugin's back-end options.
* Once a token has been successfully got, the user is sent to an Authorization page where he can allow access for your site.
*
* @param null $oauth_callback
* @return null
*/
function get_request_token($oauth_callback = null)
{
if (!empty($oauth_callback)) {
$callback = $oauth_callback;
} else {
$callback = Photonic::get_callback_url();
}
if ($this->provider == 'flickr') {
$method = 'GET';
} else {
$method = 'POST';
}
$signature = $this->generate_signature($this->request_token_URL(), array('oauth_callback' => $callback), $method);
$parameters = array('oauth_version' => $this->oauth_version, 'oauth_nonce' => $this->nonce, 'oauth_timestamp' => $this->oauth_timestamp, 'oauth_callback' => $callback, 'oauth_consumer_key' => $this->api_key, 'oauth_signature_method' => $this->oauth_signature_method(), 'oauth_signature' => $signature);
if ($this->provider == 'smug') {
$parameters['method'] = $this->request_token_URL();
}
$end_point = $this->provider == 'smug' ? $this->end_point() : $this->request_token_URL();
if ($method == 'GET') {
$end_point .= '?' . Photonic_Processor::build_query($parameters);
$parameters = null;
}
$response = Photonic::http($end_point, $method, $parameters);
$token = $this->parse_token($response);
$secret = 'photonic_' . $this->provider . '_api_secret';
global ${$secret};
// We will hash the secret to store the cookie. Otherwise the cookie for the visitor will have the secret for the app for the plugin user.
$secret = md5(${$secret}, false);
if (isset($token['oauth_token']) && isset($token['oauth_token_secret'])) {
setcookie('photonic-' . $secret . '-oauth-token', $token['oauth_token'], time() + 365 * 60 * 60 * 24, COOKIEPATH);
setcookie('photonic-' . $secret . '-oauth-token-secret', $token['oauth_token_secret'], time() + 365 * 60 * 60 * 24, COOKIEPATH);
setcookie('photonic-' . $secret . '-oauth-token-type', 'request', time() + 365 * 60 * 60 * 24, COOKIEPATH);
}
return $token;
}
