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<?php namespace Mpdf\PsrHttpMessageShim; use Psr\Http\Message\MessageInterface; use Psr\Http\Message\RequestInterface; 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(): string { 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(string $requestTarget): RequestInterface { 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(): string { return $this->method; } public function withMethod(string $method): RequestInterface { $new = clone $this; $new->method = $method; return $new; } public function getUri(): UriInterface { return $this->uri; } public function withUri(UriInterface $uri, bool $preserveHost = false): RequestInterface { if ($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(): string { return $this->protocol; } public function withProtocolVersion(string $version): MessageInterface { if ($this->protocol === $version) { return $this; } $new = clone $this; $new->protocol = $version; return $new; } public function getHeaders(): array { return $this->headers; } public function hasHeader(string $header): bool { return isset($this->headerNames[strtolower($header)]); } public function getHeader(string $header): array { $header = strtolower($header); if (!isset($this->headerNames[$header])) { return []; } $header = $this->headerNames[$header]; return $this->headers[$header]; } public function getHeaderLine(string $header):string { return implode(', ', $this->getHeader($header)); } public function withHeader(string $header, $value): MessageInterface { if (!is_array($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(string $header, $value): MessageInterface { if (!is_array($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(string $header): MessageInterface { $normalized = strtolower($header); if (!isset($this->headerNames[$normalized])) { return $this; } $header = $this->headerNames[$normalized]; $new = clone $this; unset($new->headers[$header], $new->headerNames[$normalized]); return $new; } public function getBody(): StreamInterface { if (!$this->stream) { $this->stream = Stream::create(''); $this->stream->rewind(); } return $this->stream; } public function withBody(StreamInterface $body): MessageInterface { if ($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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