--- /dev/null
+<?php
+/**
+ * A class for an image response on an HTTP request
+ *
+ * @author Roland Haeder <webmaster@ship-simu.org>
+ * @version 0.0.0
+ * @copyright Copyright(c) 2007, 2008 Roland Haeder, this is free software
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.ship-simu.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * The extended headers are taken from phpMyAdmin setup tool, written by
+ * Michal Cihar <michal@cihar.com>, licensed under GNU GPL 2.0.
+ */
+class ImageResponse extends BaseFrameworkSystem implements Responseable {
+ /**
+ * Response status
+ */
+ private $responseStatus = "200 OK";
+
+ /**
+ * Array with all headers
+ */
+ private $responseHeaders = array();
+
+ /**
+ * Cookies we shall sent out
+ */
+ private $cookies = array();
+
+ /**
+ * Body of the response
+ */
+ private $responseBody = "";
+
+ /**
+ * Instance of the template engine
+ */
+ private $templateEngine = null;
+
+ /**
+ * Fatal resolved messages from filters and so on
+ */
+ private $fatalMessages = array();
+
+ /**
+ * Protected constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+
+ // Set part description
+ $this->setObjectDescription("HTTP response");
+
+ // Create unique ID number
+ $this->generateUniqueId();
+
+ // Clean up a little
+ $this->removeNumberFormaters();
+ $this->removeSystemArray();
+ }
+
+ /**
+ * Creates an object of this class
+ *
+ * @param $appInstance An instance of a manageable application
+ * @return $responseInstance A prepared instance of this class
+ */
+ public final static function createImageResponse (ManageableApplication $appInstance) {
+ // Get a new instance
+ $responseInstance = new ImageResponse();
+
+ // Set the application instance
+ $responseInstance->setApplicationInstance($appInstance);
+
+ // Initialize the template engine here
+ $responseInstance->initTemplateEngine($appInstance);
+
+ // Return the prepared instance
+ return $responseInstance;
+ }
+
+ /**
+ * Setter for status
+ *
+ * @param $status New response status
+ * @return void
+ */
+ public final function setResponseStatus ($status) {
+ $this->responseStatus = (string) $status;
+ }
+
+ /**
+ * Add header element
+ *
+ * @param $name Name of header element
+ * @param $value Value of header element
+ * @return void
+ */
+ public final function addHeader ($name, $value) {
+ $this->responseHeaders[$name] = $value;
+ }
+
+ /**
+ * Reset the header array
+ *
+ * @return void
+ */
+ public final function resetResponseHeaders () {
+ $this->responseHeaders = array();
+ }
+
+ /**
+ * "Writes" data to the response body
+ *
+ * @param $output Output we shall sent in the HTTP response
+ * @return void
+ */
+ public function writeToBody ($output) {
+ $this->responseBody .= $output;
+ }
+
+ /**
+ * Sets the response body to something new
+ *
+ * @param $output Output we shall sent in the HTTP response
+ * @return void
+ */
+ public function setResponseBody ($output) {
+ $this->responseBody = $output;
+ }
+
+ /**
+ * Flushs the cached HTTP response to the outer world
+ *
+ * @param $force Wether we shall force the output or abort if headers are
+ * already sent with an exception
+ * @return void
+ * @throws ResponseHeadersAlreadySentException Thrown if headers are
+ * already sent
+ */
+ public function flushBuffer ($force=false) {
+ if ((headers_sent()) && (!$force)) {
+ // Headers are already sent!
+ throw new ResponseHeadersAlreadySentException($this, self::EXCEPTION_HEADERS_ALREADY_SENT);
+ } elseif (!headers_sent()) {
+ // Send headers out
+ header("HTTP/1.1 {$this->responseStatus}");
+
+ // Used later
+ $now = gmdate('D, d M Y H:i:s') . ' GMT';
+
+ // General header for no caching
+ $this->addHeader('Expired', $now); // rfc2616 - Section 14.21
+ $this->addHeader('Last-Modified', $now);
+ $this->addHeader('Cache-Control', 'no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0'); // HTTP/1.1
+ $this->addHeader('Pragma', 'no-cache'); // HTTP/1.0
+
+ // Define the charset to be used
+ //$this->addHeader('Content-Type:', sprintf("text/html; charset=%s", $this->getConfigInstance()->readConfig('header_charset')));
+
+ foreach ($this->responseHeaders as $name=>$value) {
+ header("{$name}: {$value}");
+ } // END - foreach
+
+ // Send cookies out?
+ if (count($this->cookies) > 0) {
+ // Send all cookies
+ $cookieString = implode(" ", $this->cookies);
+ header("Set-Cookie: {$cookieString}");
+
+ // Remove them all
+ $this->cookies = array();
+ } // END - if
+ }
+
+ // Are there some error messages?
+ if (count($this->fatalMessages) == 0) {
+ // Flush the output to the world
+ $this->getWebOutputInstance()->output($this->responseBody);
+ } else {
+ // Display all error messages
+ $this->getApplicationInstance()->handleFatalMessages($this->fatalMessages);
+
+ // Send the error messages out to the world
+ $this->getWebOutputInstance()->output($this->responseBody);
+ }
+
+ // Clear response header and body
+ $this->setResponseBody("");
+ $this->resetResponseHeaders();
+ }
+
+ /**
+ * Initializes the template engine instance
+ *
+ * @param $appInstance An instance of a manageable application
+ * @return void
+ */
+ public final function initTemplateEngine (ManageableApplication $appInstance) {
+ // Get config instance
+ $cfg = $this->getConfigInstance();
+
+ // Set new template engine
+ $cfg->setConfigEntry('template_class', "ImageTemplateEngine");
+ $cfg->setConfigEntry('raw_template_extension', ".img");
+ $cfg->setConfigEntry('code_template_extension', ".img");
+ $cfg->setConfigEntry('tpl_base_path', "templates/images/");
+ $cfg->setConfigEntry('code_template_type', "image");
+
+ // Get a prepared instance
+ $this->templateEngine = $this->prepareTemplateEngine($appInstance);
+ }
+
+ /**
+ * Getter for the template engine instance
+ *
+ * @return $templateEngine An instance of the used template engine
+ */
+ public final function getTemplateEngine () {
+ return $this->templateEngine;
+ }
+
+ /**
+ * Adds a fatal message id to the response. The added messages can then be
+ * processed and outputed to the world
+ *
+ * @param $messageId The message id we shall add
+ * @return void
+ */
+ public final function addFatalMessage ($messageId) {
+ // Adds the resolved message id to the fatal message list
+ $this->fatalMessages[] = $this->getApplicationInstance()->getLanguageInstance()->getMessage($messageId);
+ }
+
+ /**
+ * Adds a cookie to the response
+ *
+ * @param $cookieName Cookie's name
+ * @param $cookieValue Value to store in the cookie
+ * @param $encrypted Do some extra encryption on the value
+ * @param $expires Timestamp of expiration (default: configured)
+ * @return void
+ * @throws ResponseHeadersAlreadySentException If headers are already sent
+ * @todo Encryption of cookie data not yet supported.
+ * @todo Why are these parameters conflicting?
+ * @todo If the return statement is removed and setcookie() commented out,
+ * @todo this will send only one cookie out, the first one.
+ */
+ public function addCookie ($cookieName, $cookieValue, $encrypted = false, $expires = null) {
+ // Are headers already sent?
+ if (headers_sent()) {
+ // Throw an exception here
+ throw new ResponseHeadersAlreadySentException($this, self::EXCEPTION_HEADERS_ALREADY_SENT);
+ } // END - if
+
+ // Shall we encrypt the cookie?
+ if ($encrypted === true) {
+ } // END - if
+
+ // For slow browsers set the cookie array element first
+ $_COOKIE[$cookieName] = $cookieValue;
+
+ // Get all config entries
+ if (is_null($expires)) {
+ $expires = (time() + $this->getConfigInstance()->readConfig('cookie_expire'));
+ } // END - if
+
+ $path = $this->getConfigInstance()->readConfig('cookie_path');
+ $domain = $this->getConfigInstance()->readConfig('cookie_domain');
+
+ setcookie($cookieName, $cookieValue, $expires);
+ //, $path, $domain, (isset($_SERVER['HTTPS']))
+ return;
+
+ // Now construct the full header
+ $cookieString = $cookieName . "=" . $cookieValue . "; ";
+ $cookieString .= "expires=" . date("D, d-F-Y H:i:s", $expires) . " GMT";
+ // $cookieString .= "; path=".$path."; domain=".$domain;
+
+ // Set the cookie as a header
+ $this->cookies[$cookieName] = $cookieString;
+ }
+
+ /**
+ * Redirect to a configured URL. The URL can be absolute or relative. In
+ * case of relative URL it will be extended automatically.
+ *
+ * @param $configEntry The configuration entry which holds our URL
+ * @return void
+ * @throws ResponseHeadersAlreadySentException If headers are already sent
+ */
+ public function redirectToConfiguredUrl ($configEntry) {
+ // Is the header not yet sent?
+ if (headers_sent()) {
+ // Throw an exception here
+ throw new ResponseHeadersAlreadySentException($this, self::EXCEPTION_HEADERS_ALREADY_SENT);
+ } // END - if
+
+ // Get the url from config
+ $url = $this->getConfigInstance()->readConfig($configEntry);
+
+ // Do we have a "http" in front of the URL?
+ if (substr(strtolower($url), 0, 4) != "http") {
+ // Is there a / in front of the relative URL?
+ if (substr($url, 0, 1) == "/") $url = substr($url, 1);
+
+ // No, then extend it with our base URL
+ $url = $this->getConfigInstance()->readConfig('base_url') . "/" . $url;
+ } // END - if
+
+ // Add redirect header
+ $this->addHeader("Location", $url);
+
+ // Set correct response status
+ $this->setResponseStatus("301 Moved Permanently");
+
+ // Clear the body
+ $this->setResponseBody("");
+
+ // Flush the result
+ $this->flushBuffer();
+
+ // All done here...
+ exit();
+ }
+
+ /**
+ * Expires the given cookie if it is set
+ *
+ * @param $cookieName Cookie to expire
+ * @return void
+ */
+ public function expireCookie ($cookieName) {
+ // Is the cookie there?
+ if (isset($_COOKIE[$cookieName])) {
+ // Then expire it with 20 minutes past
+ $this->addCookie($cookieName, "", false, (time() - 1200));
+
+ // Remove it from array
+ unset($_COOKIE[$cookieName]);
+ } // END - if
+ }
+
+ /**
+ * Refreshs a given cookie. This will make the cookie live longer
+ *
+ * @param $cookieName Cookie to refresh
+ * @return void
+ */
+ public function refreshCookie ($cookieName) {
+ // Only update existing cookies
+ if (isset($_COOKIE[$cookieName])) {
+ // Update the cookie
+ $this->addCookie($cookieName, $_COOKIE[$cookieName], false);
+ } // END - if
+ }
+}
+
+// [EOF]
+?>
projects / shipsimu.git / blobdiff