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<?php
namespace Mpdf\Http;
use Psr\Http\Message\StreamInterface;
use Psr\Http\Message\UriInterface;
/**
* PSR-7 URI implementation ported from nyholm/psr7 and adapted for PHP 5.6
*
* @link https://github.com/Nyholm/psr7/blob/master/src/Uri.php
*/
class Request implements \Psr\Http\Message\RequestInterface
{
/** @var string */
private $method;
/** @var null|string */
private $requestTarget;
/** @var null|UriInterface */
private $uri;
/** @var array Map of all registered headers, as original name => array of values */
private $headers = [];
/** @var array Map of lowercase header name => original name at registration */
private $headerNames = [];
/** @var string */
private $protocol;
/** @var StreamInterface */
private $stream;
/**
* @param string $method HTTP method
* @param string|UriInterface $uri URI
* @param array $headers Request headers
* @param string|null|resource|StreamInterface $body Request body
* @param string $version Protocol version
*/
public function __construct(
$method,
$uri,
array $headers = [],
$body = null,
$version = '1.1'
) {
if (!($uri instanceof UriInterface)) {
$uri = new Uri($uri);
}
$this->method = $method;
$this->uri = $uri;
$this->setHeaders($headers);
$this->protocol = $version;
if (!$this->hasHeader('Host')) {
$this->updateHostFromUri();
}
if ($body !== '' && $body !== null) {
$this->stream = Stream::create($body);
}
}
public function getRequestTarget()
{
if ($this->requestTarget !== null) {
return $this->requestTarget;
}
$target = $this->uri->getPath();
if ($target == '') {
$target = '/';
}
if ($this->uri->getQuery() != '') {
$target .= '?'.$this->uri->getQuery();
}
return $target;
}
public function withRequestTarget($requestTarget)
{
if (preg_match('#\s#', $requestTarget)) {
throw new \InvalidArgumentException('Invalid request target provided; cannot contain whitespace');
}
$new = clone $this;
$new->requestTarget = $requestTarget;
return $new;
}
public function getMethod()
{
return $this->method;
}
public function withMethod($method)
{
$new = clone $this;
$new->method = $method;
return $new;
}
public function getUri()
{
return $this->uri;
}
public function withUri(UriInterface $uri, $preserveHost = false)
{
if ($uri === $this->uri) {
return $this;
}
$new = clone $this;
$new->uri = $uri;
if (!$preserveHost || !$this->hasHeader('Host')) {
$new->updateHostFromUri();
}
return $new;
}
private function updateHostFromUri()
{
$host = $this->uri->getHost();
if ($host == '') {
return;
}
if (($port = $this->uri->getPort()) !== null) {
$host .= ':'.$port;
}
if (isset($this->headerNames['host'])) {
$header = $this->headerNames['host'];
} else {
$header = 'Host';
$this->headerNames['host'] = 'Host';
}
// Ensure Host is the first header.
// See: http://tools.ietf.org/html/rfc7230#section-5.4
$this->headers = [$header => [$host]] + $this->headers;
}
public function getProtocolVersion()
{
return $this->protocol;
}
public function withProtocolVersion($version)
{
if ($this->protocol === $version) {
return $this;
}
$new = clone $this;
$new->protocol = $version;
return $new;
}
public function getHeaders()
{
return $this->headers;
}
public function hasHeader($header)
{
return isset($this->headerNames[strtolower($header)]);
}
public function getHeader($header)
{
$header = strtolower($header);
if (!isset($this->headerNames[$header])) {
return [];
}
$header = $this->headerNames[$header];
return $this->headers[$header];
}
public function getHeaderLine($header)
{
return implode(', ', $this->getHeader($header));
}
public function withHeader($header, $value)
{
if (!is_array($value)) {
$value = [$value];
}
$value = $this->trimHeaderValues($value);
$normalized = strtolower($header);
$new = clone $this;
if (isset($new->headerNames[$normalized])) {
unset($new->headers[$new->headerNames[$normalized]]);
}
$new->headerNames[$normalized] = $header;
$new->headers[$header] = $value;
return $new;
}
public function withAddedHeader($header, $value)
{
if (!is_array($value)) {
$value = [$value];
}
$value = $this->trimHeaderValues($value);
$normalized = strtolower($header);
$new = clone $this;
if (isset($new->headerNames[$normalized])) {
$header = $this->headerNames[$normalized];
$new->headers[$header] = array_merge($this->headers[$header], $value);
} else {
$new->headerNames[$normalized] = $header;
$new->headers[$header] = $value;
}
return $new;
}
public function withoutHeader($header)
{
$normalized = strtolower($header);
if (!isset($this->headerNames[$normalized])) {
return $this;
}
$header = $this->headerNames[$normalized];
$new = clone $this;
unset($new->headers[$header], $new->headerNames[$normalized]);
return $new;
}
public function getBody()
{
if (!$this->stream) {
$this->stream = Stream::create('');
$this->stream->rewind();
}
return $this->stream;
}
public function withBody(StreamInterface $body)
{
if ($body === $this->stream) {
return $this;
}
$new = clone $this;
$new->stream = $body;
return $new;
}
private function setHeaders(array $headers)
{
$this->headerNames = $this->headers = [];
foreach ($headers as $header => $value) {
if (!is_array($value)) {
$value = [$value];
}
$value = $this->trimHeaderValues($value);
$normalized = strtolower($header);
if (isset($this->headerNames[$normalized])) {
$header = $this->headerNames[$normalized];
$this->headers[$header] = array_merge($this->headers[$header], $value);
} else {
$this->headerNames[$normalized] = $header;
$this->headers[$header] = $value;
}
}
}
/**
* Trims whitespace from the header values.
*
* Spaces and tabs ought to be excluded by parsers when extracting the field value from a header field.
*
* header-field = field-name ":" OWS field-value OWS
* OWS = *( SP / HTAB )
*
* @param string[] $values Header values
*
* @return string[] Trimmed header values
*
* @see https://tools.ietf.org/html/rfc7230#section-3.2.4
*/
private function trimHeaderValues(array $values)
{
return array_map(function ($value) {
return trim($value, " \t");
}, $values);
}
}
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