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+<?php
+/**
+ * Slim - a micro PHP 5 framework
+ *
+ * @author Josh Lockhart <info@joshlockhart.com>
+ * @copyright 2011 Josh Lockhart
+ * @link http://www.slimframework.com
+ * @license http://www.slimframework.com/license
+ * @version 1.5.0
+ *
+ * MIT LICENSE
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Response
+ *
+ * Object-oriented representation of an HTTP response that is
+ * returned to the client. This class is responsible for:
+ *
+ * - HTTP response status
+ * - HTTP response body
+ * - HTTP response headers
+ * - HTTP response cookies
+ *
+ * @package Slim
+ * @author Josh Lockhart <info@joshlockhart.com>
+ * @author Kris Jordan <http://github.com/KrisJordan>
+ * @since Version 1.0
+ */
+class Slim_Http_Response {
+
+ /**
+ * @var Slim_Http_Request
+ */
+ protected $request;
+
+ /**
+ * @var string
+ */
+ protected $httpVersion = '1.1';
+
+ /**
+ * @var int HTTP status code
+ */
+ protected $status = 200;
+
+ /**
+ * @var array Key-value array of HTTP response headers
+ */
+ protected $headers = array();
+
+ /**
+ * @var string HTTP response body
+ */
+ protected $body = '';
+
+ /**
+ * @var int Length of HTTP response body
+ */
+ protected $length = 0;
+
+ /**
+ * @var array HTTP response codes and messages
+ */
+ protected static $messages = array(
+ //Informational 1xx
+ 100 => '100 Continue',
+ 101 => '101 Switching Protocols',
+ //Successful 2xx
+ 200 => '200 OK',
+ 201 => '201 Created',
+ 202 => '202 Accepted',
+ 203 => '203 Non-Authoritative Information',
+ 204 => '204 No Content',
+ 205 => '205 Reset Content',
+ 206 => '206 Partial Content',
+ //Redirection 3xx
+ 300 => '300 Multiple Choices',
+ 301 => '301 Moved Permanently',
+ 302 => '302 Found',
+ 303 => '303 See Other',
+ 304 => '304 Not Modified',
+ 305 => '305 Use Proxy',
+ 306 => '306 (Unused)',
+ 307 => '307 Temporary Redirect',
+ //Client Error 4xx
+ 400 => '400 Bad Request',
+ 401 => '401 Unauthorized',
+ 402 => '402 Payment Required',
+ 403 => '403 Forbidden',
+ 404 => '404 Not Found',
+ 405 => '405 Method Not Allowed',
+ 406 => '406 Not Acceptable',
+ 407 => '407 Proxy Authentication Required',
+ 408 => '408 Request Timeout',
+ 409 => '409 Conflict',
+ 410 => '410 Gone',
+ 411 => '411 Length Required',
+ 412 => '412 Precondition Failed',
+ 413 => '413 Request Entity Too Large',
+ 414 => '414 Request-URI Too Long',
+ 415 => '415 Unsupported Media Type',
+ 416 => '416 Requested Range Not Satisfiable',
+ 417 => '417 Expectation Failed',
+ 422 => '422 Unprocessable Entity',
+ 423 => '423 Locked',
+ //Server Error 5xx
+ 500 => '500 Internal Server Error',
+ 501 => '501 Not Implemented',
+ 502 => '502 Bad Gateway',
+ 503 => '503 Service Unavailable',
+ 504 => '504 Gateway Timeout',
+ 505 => '505 HTTP Version Not Supported'
+ );
+
+ /**
+ * @var CookieJar Manages Cookies to be sent with this Response
+ */
+ protected $cookieJar;
+
+ /**
+ * Constructor
+ */
+ public function __construct( Slim_Http_Request $req ) {
+ $this->request = $req;
+ $this->header('Content-Type', 'text/html');
+ }
+
+ /**
+ * Set and/or get the HTTP response version
+ * @param string $version
+ * @return void
+ * @throws InvalidArgumentException If argument is not a valid HTTP version
+ */
+ public function httpVersion( $version = null ) {
+ if ( $version ) {
+ $version = (string)$version;
+ if ( $version === '1.0' || $version === '1.1' ) {
+ $this->httpVersion = $version;
+ } else {
+ throw new InvalidArgumentException('Invalid HTTP version in Response object');
+ }
+ }
+ return $this->httpVersion;
+ }
+
+ /**
+ * Set and/or get the HTTP response status code
+ * @param int $status
+ * @return int
+ * @throws InvalidArgumentException If argument is not a valid HTTP status code
+ */
+ public function status( $status = null ) {
+ if ( !is_null($status) ) {
+ if ( !in_array(intval($status), array_keys(self::$messages)) ) {
+ throw new InvalidArgumentException('Cannot set Response status. Provided status code "' . $status . '" is not a valid HTTP response code.');
+ }
+ $this->status = intval($status);
+ }
+ return $this->status;
+ }
+
+ /**
+ * Get HTTP response headers
+ * @return array
+ */
+ public function headers() {
+ return $this->headers;
+ }
+
+ /**
+ * Get and/or set an HTTP response header
+ * @param string $key The header name
+ * @param string $value The header value
+ * @return string|null The header value, or NULL if header not set
+ */
+ public function header( $key, $value = null ) {
+ if ( !is_null($value) ) {
+ $this->headers[$key] = $value;
+ }
+ return isset($this->headers[$key]) ? $this->headers[$key] : null;
+ }
+
+ /**
+ * Set the HTTP response body
+ * @param string $body The new HTTP response body
+ * @return string The new HTTP response body
+ */
+ public function body( $body = null ) {
+ if ( !is_null($body) ) {
+ $this->body = '';
+ $this->length = 0;
+ $this->write($body);
+ }
+ return $this->body;
+ }
+
+ /**
+ * Append the HTTP response body
+ * @param string $body Content to append to the current HTTP response body
+ * @return string The updated HTTP response body
+ */
+ public function write( $body ) {
+ $body = (string)$body;
+ $this->length += strlen($body);
+ $this->body .= $body;
+ $this->header('Content-Length', $this->length);
+ return $body;
+ }
+
+ /**
+ * Set cookie jar
+ * @param Slim_Http_CookieJar $cookieJar
+ * @return void
+ */
+ public function setCookieJar( Slim_Http_CookieJar $cookieJar ) {
+ $this->cookieJar = $cookieJar;
+ }
+
+ /**
+ * Get cookie jar
+ * @return Slim_Http_CookieJar
+ */
+ public function getCookieJar() {
+ return $this->cookieJar;
+ }
+
+ /**
+ * Finalize response headers before response is sent
+ * @return void
+ */
+ public function finalize() {
+ if ( in_array($this->status, array(204, 304)) ) {
+ $this->body('');
+ unset($this->headers['Content-Type']);
+ }
+ }
+
+ /**
+ * Get message for HTTP status code
+ * @return string|null
+ */
+ public static function getMessageForCode( $status ) {
+ return isset(self::$messages[$status]) ? self::$messages[$status] : null;
+ }
+
+ /**
+ * Can this HTTP response have a body?
+ * @return bool
+ */
+ public function canHaveBody() {
+ return ( $this->status < 100 || $this->status >= 200 ) && $this->status != 204 && $this->status != 304;
+ }
+
+ /**
+ * Send headers for HTTP response
+ * @return void
+ */
+ protected function sendHeaders() {
+ //Finalize response
+ $this->finalize();
+
+ if ( substr(PHP_SAPI, 0, 3) === 'cgi') {
+ //Send Status header if running with fastcgi
+ header('Status: ' . self::getMessageForCode($this->status()));
+ } else {
+ //Else send HTTP message
+ header(sprintf('HTTP/%s %s', $this->httpVersion, self::getMessageForCode($this->status())));
+ }
+
+ //Send headers
+ foreach ( $this->headers() as $name => $value ) {
+ header("$name: $value");
+ }
+
+ //Send cookies
+ foreach ( $this->getCookieJar()->getResponseCookies() as $name => $cookie ) {
+ setcookie($cookie->getName(), $cookie->getValue(), $cookie->getExpires(), $cookie->getPath(), $cookie->getDomain(), $cookie->getSecure(), $cookie->getHttpOnly());
+ }
+
+ //Flush all output to client
+ flush();
+ }
+
+ /**
+ * Send HTTP response
+ *
+ * This method will set Response headers, set Response cookies,
+ * and `echo` the Response body to the current output buffer.
+ *
+ * @return void
+ */
+ public function send() {
+ if ( !headers_sent() ) {
+ $this->sendHeaders();
+ }
+ if ( $this->canHaveBody() && $this->request->isHead() === false ) {
+ echo $this->body;
+ }
+ }
+
+} \ No newline at end of file
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