private function _readURL($url, &$headers, &$body, &$err_msg)
{
phpCAS::traceBegin();
$className = $this->_requestImplementation;
$request = new $className();
if (count($this->_curl_options)) {
$request->setCurlOptions($this->_curl_options);
}
$request->setUrl($url);
if (empty($this->_cas_server_ca_cert) && !$this->_no_cas_server_validation) {
phpCAS::error('one of the methods phpCAS::setCasServerCACert() or phpCAS::setNoCasServerValidation() must be called.');
}
if ($this->_cas_server_ca_cert != '') {
$request->setSslCaCert($this->_cas_server_ca_cert, $this->_cas_server_cn_validate);
}
// add extra stuff if SAML
if ($this->getServerVersion() == SAML_VERSION_1_1) {
$request->addHeader("soapaction: http://www.oasis-open.org/committees/security");
$request->addHeader("cache-control: no-cache");
$request->addHeader("pragma: no-cache");
$request->addHeader("accept: text/xml");
$request->addHeader("connection: keep-alive");
$request->addHeader("content-type: text/xml");
$request->makePost();
$request->setPostBody($this->_buildSAMLPayload());
}
if ($request->send()) {
$headers = $request->getResponseHeaders();
$body = $request->getResponseBody();
$err_msg = '';
phpCAS::traceEnd(true);
return true;
} else {
$headers = '';
$body = '';
$err_msg = $request->getErrorMessage();
phpCAS::traceEnd(false);
return false;
}
}