/**
* Returns the header collection.
* The header collection contains the HTTP headers associated with HTTP message.
* @return HeaderCollection the header collection
*/
public function getHeaders()
{
if (!is_object($this->_headers)) {
$headerCollection = new HeaderCollection();
if (is_array($this->_headers)) {
foreach ($this->_headers as $name => $value) {
if (is_int($name)) {
// parse raw header :
$rawHeader = $value;
if (($separatorPos = strpos($rawHeader, ':')) !== false) {
$name = strtolower(trim(substr($rawHeader, 0, $separatorPos)));
$value = trim(substr($rawHeader, $separatorPos + 1));
$headerCollection->add($name, $value);
} elseif (strpos($rawHeader, 'HTTP/') === 0) {
$parts = explode(' ', $rawHeader, 3);
$headerCollection->add('http-code', $parts[1]);
} else {
$headerCollection->add('raw', $rawHeader);
}
} else {
$headerCollection->set($name, $value);
}
}
}
$this->_headers = $headerCollection;
}
return $this->_headers;
}
/**
* @return bool
*/
private function checkHeaders()
{
if (!isset($this->currentParams['headers'])) {
return true;
}
$originalStructure = $this->currentParams['headers'];
/**
* if token validator is active
*/
foreach ($originalStructure as $header) {
if (!$this->requestHeaders->get($header)) {
throw new InvalidParamException(\Yii::t('system', 'Header \'{0}\' is empty', [$header]), 406);
}
}
return true;
}
/**
* Detects format from headers.
* @param HeaderCollection $headers source headers.
* @return null|string format name, 'null' - if detection failed.
*/
protected function detectFormatByHeaders(HeaderCollection $headers)
{
$contentType = $headers->get('content-type');
if (!empty($contentType)) {
if (stripos($contentType, 'json') !== false) {
return Client::FORMAT_JSON;
}
if (stripos($contentType, 'urlencoded') !== false) {
return Client::FORMAT_URLENCODED;
}
if (stripos($contentType, 'xml') !== false) {
return Client::FORMAT_XML;
}
}
return null;
}
/**
* Sets HPKP header.
* @param HeaderCollection $headers
*/
public function addPublicKeyPins(HeaderCollection $headers)
{
if ($this->hpkpPins && is_array($this->hpkpPins)) {
$values = [];
foreach ($this->hpkpPins as $pin) {
$values[] = "pin-sha256=\"" . $pin . "\"";
}
if (!empty($this->hpkpReportUri)) {
$values[] = "report-uri=\"" . $this->hpkpReportUri . "\"";
}
$values[] = "max-age=" . $this->hpkpMaxAge;
if ($this->hpkpIncludeSubdomains) {
$values[] = "includeSubDomains";
}
$headers->set('Public-Key-Pins', implode("; ", $values));
}
}