/**
* Callback function called by cURL for saving the response headers
*
* @param resource cURL handle
* @param string response header (with trailing CRLF)
* @return integer number of bytes saved
* @see Diglin_HTTP_Request2_Response::parseHeaderLine()
*/
protected function callbackWriteHeader($ch, $string)
{
// we may receive a second set of headers if doing e.g. digest auth
if ($this->eventReceivedHeaders || !$this->eventSentHeaders) {
// don't bother with 100-Continue responses (bug #15785)
if (!$this->eventSentHeaders || $this->response->getStatus() >= 200) {
$this->request->setLastEvent('sentHeaders', curl_getinfo($ch, CURLINFO_HEADER_OUT));
}
$upload = curl_getinfo($ch, CURLINFO_SIZE_UPLOAD);
// if body wasn't read by a callback, send event with total body size
if ($upload > $this->position) {
$this->request->setLastEvent('sentBodyPart', $upload - $this->position);
$this->position = $upload;
}
$this->eventSentHeaders = true;
// we'll need a new response object
if ($this->eventReceivedHeaders) {
$this->eventReceivedHeaders = false;
$this->response = null;
}
}
if (empty($this->response)) {
$this->response = new Diglin_HTTP_Request2_Response($string, false);
} else {
$this->response->parseHeaderLine($string);
if ('' == trim($string)) {
// don't bother with 100-Continue responses (bug #15785)
if (200 <= $this->response->getStatus()) {
$this->request->setLastEvent('receivedHeaders', $this->response);
}
// for versions lower than 5.2.10, check the redirection URL protocol
if ($this->request->getConfig('follow_redirects') && !defined('CURLOPT_REDIR_PROTOCOLS') && $this->response->isRedirect()) {
$redirectUrl = new Diglin_Net_URL2($this->response->getHeader('location'));
if ($redirectUrl->isAbsolute() && !in_array($redirectUrl->getScheme(), array('http', 'https'))) {
return -1;
}
}
$this->eventReceivedHeaders = true;
}
}
return strlen($string);
}
/**
* Checks whether another request should be performed with proxy digest auth
*
* Several conditions should be satisfied for it to return true:
* - response status should be 407
* - proxy auth credentials should be set in the request object
* - response should contain Proxy-Authenticate header with digest challenge
* - there is either no challenge stored for this proxy or new challenge
* contains stale=true parameter (in other case we probably just failed
* due to invalid username / password)
*
* The method stores challenge values in $challenges static property
*
* @param Diglin_HTTP_Request2_Response response to check
* @return boolean whether another request should be performed
* @throws Diglin_HTTP_Request2_Exception in case of unsupported challenge parameters
*/
protected function shouldUseProxyDigestAuth(Diglin_HTTP_Request2_Response $response)
{
if (407 != $response->getStatus() || !$this->request->getConfig('proxy_user')) {
return false;
}
if (!($challenge = $this->parseDigestChallenge($response->getHeader('proxy-authenticate')))) {
return false;
}
$key = 'proxy://' . $this->request->getConfig('proxy_host') . ':' . $this->request->getConfig('proxy_port');
if (!empty(self::$challenges[$key]) && (empty($challenge['stale']) || strcasecmp('true', $challenge['stale']))) {
$ret = false;
} else {
$ret = true;
}
self::$challenges[$key] = $challenge;
return $ret;
}
