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<?php
/**
* Bitrix Framework
* @package bitrix
* @subpackage main
* @copyright 2001-2014 Bitrix
*/
namespace Bitrix\Main\Web;
use Bitrix\Main\Context;
use Bitrix\Main\Text\Encoding;
use IteratorAggregate;
use Traversable;
class HttpHeaders implements IteratorAggregate
{
protected $headers = array();
public function __construct()
{
}
/**
* Adds a header.
* @param string $name
* @param string $value
*/
public function add($name, $value)
{
$name = $this->refineString($name);
$value = $this->refineString($value);
$nameLower = strtolower($name);
if (!isset($this->headers[$nameLower]))
{
$this->headers[$nameLower] = [
"name" => $name,
"values" => [],
];
}
$this->headers[$nameLower]["values"][] = $value;
}
private function refineString($string)
{
return str_replace(["%0D", "%0A", "\r", "\n"], "", $string);
}
/**
* Sets a header value.
* @param string $name
* @param string|null $value
*/
public function set($name, $value)
{
$name = $this->refineString($name);
if ($value !== null)
{
$value = $this->refineString($value);
}
$nameLower = strtolower($name);
$this->headers[$nameLower] = [
"name" => $name,
"values" => [$value],
];
}
/**
* Returns a header value by its name. If $returnArray is true then an array with multiple values is returned.
* @param string $name
* @param bool $returnArray
* @return null|string|array
*/
public function get($name, $returnArray = false)
{
$nameLower = strtolower($name);
if (isset($this->headers[$nameLower]))
{
if ($returnArray)
{
return $this->headers[$nameLower]["values"];
}
return $this->headers[$nameLower]["values"][0];
}
return null;
}
/**
* Deletes a header or headers by its name.
*
* @param string $name
* @return void
*/
public function delete($name)
{
$nameLower = strtolower($name);
if (isset($this->headers[$nameLower]))
{
unset($this->headers[$nameLower]);
}
}
/**
* Clears all headers.
*/
public function clear()
{
unset($this->headers);
$this->headers = [];
}
/**
* Returns the string representation for a HTTP request.
* @return string
*/
public function toString()
{
$str = "";
foreach($this->headers as $header)
{
foreach ($header["values"] as $value)
{
$str .= $header["name"] . ": " . $value . "\r\n";
}
}
return $str;
}
/**
* Returns headers as a raw array.
* @return array
*/
public function toArray()
{
return $this->headers;
}
/**
* Returns the content type part of the Content-Type header.
* @return null|string
*/
public function getContentType()
{
$contentType = $this->get("Content-Type");
if ($contentType !== null)
{
$parts = explode(";", $contentType);
return trim($parts[0]);
}
return null;
}
public function getBoundary()
{
$contentType = $this->get("Content-Type");
if ($contentType !== null)
{
$parts = explode(";", $contentType);
return $parts[1];
}
return null;
}
/**
* Returns the charset part of the Content-Type header.
* @return null|string
*/
public function getCharset()
{
$contentType = $this->get("Content-Type");
if ($contentType !== null)
{
$parts = explode(";", $contentType);
foreach ($parts as $part)
{
$values = explode("=", $part);
if (strtolower(trim($values[0])) == "charset")
{
return trim($values[1]);
}
}
}
return null;
}
/**
* Returns disposition-type part of the Content-Disposition header
* @return null|string Disposition-type part of the Content-Disposition header if found or null otherwise.
*/
public function getContentDisposition()
{
$contentDisposition = $this->get("Content-Disposition");
if ($contentDisposition !== null)
{
$parts = explode(";", $contentDisposition);
return trim($parts[0]);
}
return null;
}
/**
* Returns a filename from the Content-disposition header.
*
* @return string|null Filename if it was found in the Content-disposition header or null otherwise.
*/
public function getFilename()
{
$contentDisposition = $this->get('Content-disposition');
if ($contentDisposition !== null)
{
$filename = null;
$encoding = null;
$contentElements = explode(';', $contentDisposition);
foreach ($contentElements as $contentElement)
{
$contentElement = trim($contentElement);
if (preg_match('/^filename\*=(.+)\'(.+)?\'(.+)$/', $contentElement, $matches))
{
$filename = $matches[3];
$encoding = $matches[1];
break;
}
elseif (preg_match('/^filename="(.+)"$/', $contentElement, $matches))
{
$filename = $matches[1];
}
elseif (preg_match('/^filename=(.+)$/', $contentElement, $matches))
{
$filename = $matches[1];
}
}
if ($filename <> '')
{
$filename = urldecode($filename);
if ($encoding <> '')
{
$charset = Context::getCurrent()->getCulture()->getCharset();
$filename = Encoding::convertEncoding($filename, $encoding, $charset);
}
}
return $filename;
}
return null;
}
/**
* Retrieve an external iterator
* @link https://php.net/manual/en/iteratoraggregate.getiterator.php
* @return Traversable An instance of an object implementing <b>Iterator</b> or
* <b>Traversable</b>
* @since 5.0.0
*/
public function getIterator()
{
$toIterate = [];
foreach ($this->headers as $header)
{
if (count($header["values"]) > 1)
{
$toIterate[$header["name"]] = $header["values"];
}
else
{
$toIterate[$header["name"]] = $header["values"][0];
}
}
return new \ArrayIterator($toIterate);
}
}