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<?php
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/**
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* TimThumb by Ben Gillbanks and Mark Maunder
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* Based on work done by Tim McDaniels and Darren Hoyt
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* http://code.google.com/p/timthumb/
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*
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* GNU General Public License, version 2
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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*
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* Examples and documentation available on the project homepage
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* http://www.binarymoon.co.uk/projects/timthumb/
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*
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* $Rev$
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*/
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/*
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* --- TimThumb CONFIGURATION ---
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* To edit the configs it is best to create a file called timthumb-config.php
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* and define variables you want to customize in there. It will automatically be
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* loaded by timthumb. This will save you having to re-edit these variables
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* everytime you download a new version
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*/
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define ('VERSION', '2.8.5'); // Version of this script
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//Load a config file if it exists. Otherwise, use the values below
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if( file_exists(dirname(__FILE__) . '/timthumb-config.php')) require_once('timthumb-config.php');
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if(! defined('DEBUG_ON') ) define ('DEBUG_ON', false); // Enable debug logging to web server error log (STDERR)
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if(! defined('DEBUG_LEVEL') ) define ('DEBUG_LEVEL', 1); // Debug level 1 is less noisy and 3 is the most noisy
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if(! defined('MEMORY_LIMIT') ) define ('MEMORY_LIMIT', '30M'); // Set PHP memory limit
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if(! defined('BLOCK_EXTERNAL_LEECHERS') ) define ('BLOCK_EXTERNAL_LEECHERS', false); // If the image or webshot is being loaded on an external site, display a red "No Hotlinking" gif.
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//Image fetching and caching
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if(! defined('ALLOW_EXTERNAL') ) define ('ALLOW_EXTERNAL', TRUE); // Allow image fetching from external websites. Will check against ALLOWED_SITES if ALLOW_ALL_EXTERNAL_SITES is false
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if(! defined('ALLOW_ALL_EXTERNAL_SITES') ) define ('ALLOW_ALL_EXTERNAL_SITES', TRUE); // Less secure.
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if(! defined('FILE_CACHE_ENABLED') ) define ('FILE_CACHE_ENABLED', TRUE); // Should we store resized/modified images on disk to speed things up?
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if(! defined('FILE_CACHE_TIME_BETWEEN_CLEANS')) define ('FILE_CACHE_TIME_BETWEEN_CLEANS', 86400); // How often the cache is cleaned
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if(! defined('FILE_CACHE_MAX_FILE_AGE') ) define ('FILE_CACHE_MAX_FILE_AGE', 86400); // How old does a file have to be to be deleted from the cache
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if(! defined('FILE_CACHE_SUFFIX') ) define ('FILE_CACHE_SUFFIX', '.timthumb.txt'); // What to put at the end of all files in the cache directory so we can identify them
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if(! defined('FILE_CACHE_PREFIX') ) define ('FILE_CACHE_PREFIX', 'timthumb'); // What to put at the end of all files in the cache directory so we can identify them
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if(! defined('FILE_CACHE_DIRECTORY') ) define ('FILE_CACHE_DIRECTORY', './cache'); // Directory where images are cached. Left blank it will use the system temporary directory (which is better for security)
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if(! defined('MAX_FILE_SIZE') ) define ('MAX_FILE_SIZE', 10485760); // 10 Megs is 10485760. This is the max internal or external file size that we'll process.
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if(! defined('CURL_TIMEOUT') ) define ('CURL_TIMEOUT', 20); // Timeout duration for Curl. This only applies if you have Curl installed and aren't using PHP's default URL fetching mechanism.
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if(! defined('WAIT_BETWEEN_FETCH_ERRORS') ) define ('WAIT_BETWEEN_FETCH_ERRORS', 3600); //Time to wait between errors fetching remote file
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//Browser caching
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if(! defined('BROWSER_CACHE_MAX_AGE') ) define ('BROWSER_CACHE_MAX_AGE', 864000); // Time to cache in the browser
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if(! defined('BROWSER_CACHE_DISABLE') ) define ('BROWSER_CACHE_DISABLE', false); // Use for testing if you want to disable all browser caching
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//Image size and defaults
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if(! defined('MAX_WIDTH') ) define ('MAX_WIDTH', 1500); // Maximum image width
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if(! defined('MAX_HEIGHT') ) define ('MAX_HEIGHT', 1500); // Maximum image height
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if(! defined('NOT_FOUND_IMAGE') ) define ('NOT_FOUND_IMAGE', ''); // Image to serve if any 404 occurs
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if(! defined('ERROR_IMAGE') ) define ('ERROR_IMAGE', ''); // Image to serve if an error occurs instead of showing error message
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if(! defined('DEFAULT_Q') ) define ('DEFAULT_Q', 90); // Default image quality. Allows overrid in timthumb-config.php
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if(! defined('DEFAULT_ZC') ) define ('DEFAULT_ZC', 1); // Default zoom/crop setting. Allows overrid in timthumb-config.php
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if(! defined('DEFAULT_F') ) define ('DEFAULT_F', ''); // Default image filters. Allows overrid in timthumb-config.php
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if(! defined('DEFAULT_S') ) define ('DEFAULT_S', 0); // Default sharpen value. Allows overrid in timthumb-config.php
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if(! defined('DEFAULT_CC') ) define ('DEFAULT_CC', 'ffffff'); // Default canvas colour. Allows overrid in timthumb-config.php
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//Image compression is enabled if either of these point to valid paths
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//These are now disabled by default because the file sizes of PNGs (and GIFs) are much smaller than we used to generate.
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//They only work for PNGs. GIFs and JPEGs are not affected.
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if(! defined('OPTIPNG_ENABLED') ) define ('OPTIPNG_ENABLED', false);
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if(! defined('OPTIPNG_PATH') ) define ('OPTIPNG_PATH', '/usr/bin/optipng'); //This will run first because it gives better compression than pngcrush.
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if(! defined('PNGCRUSH_ENABLED') ) define ('PNGCRUSH_ENABLED', false);
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if(! defined('PNGCRUSH_PATH') ) define ('PNGCRUSH_PATH', '/usr/bin/pngcrush'); //This will only run if OPTIPNG_PATH is not set or is not valid
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/*
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-------====Website Screenshots configuration - BETA====-------
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If you just want image thumbnails and don't want website screenshots, you can safely leave this as is.
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If you would like to get website screenshots set up, you will need root access to your own server.
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Enable ALLOW_ALL_EXTERNAL_SITES so you can fetch any external web page. This is more secure now that we're using a non-web folder for cache.
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Enable BLOCK_EXTERNAL_LEECHERS so that your site doesn't generate thumbnails for the whole Internet.
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Instructions to get website screenshots enabled on Ubuntu Linux:
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1. Install Xvfb with the following command: sudo apt-get install subversion libqt4-webkit libqt4-dev g++ xvfb
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2. Go to a directory where you can download some code
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3. Check-out the latest version of CutyCapt with the following command: svn co https://cutycapt.svn.sourceforge.net/svnroot/cutycapt
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4. Compile CutyCapt by doing: cd cutycapt/CutyCapt
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5. qmake
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6. make
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7. cp CutyCapt /usr/local/bin/
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8. Test it by running: xvfb-run --server-args="-screen 0, 1024x768x24" CutyCapt --url="http://markmaunder.com/" --out=test.png
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9. If you get a file called test.png with something in it, it probably worked. Now test the script by accessing it as follows:
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10. http://yoursite.com/path/to/timthumb.php?src=http://markmaunder.com/&webshot=1
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Notes on performance:
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The first time a webshot loads, it will take a few seconds.
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From then on it uses the regular timthumb caching mechanism with the configurable options above
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and loading will be very fast.
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--ADVANCED USERS ONLY--
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If you'd like a slight speedup (about 25%) and you know Linux, you can run the following command which will keep Xvfb running in the background.
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nohup Xvfb :100 -ac -nolisten tcp -screen 0, 1024x768x24 > /dev/null 2>&1 &
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Then set WEBSHOT_XVFB_RUNNING = true below. This will save your server having to fire off a new Xvfb server and shut it down every time a new shot is generated.
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You will need to take responsibility for keeping Xvfb running in case it crashes. (It seems pretty stable)
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You will also need to take responsibility for server security if you're running Xvfb as root.
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*/
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if(! defined('WEBSHOT_ENABLED') ) define ('WEBSHOT_ENABLED', false); //Beta feature. Adding webshot=1 to your query string will cause the script to return a browser screenshot rather than try to fetch an image.
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if(! defined('WEBSHOT_CUTYCAPT') ) define ('WEBSHOT_CUTYCAPT', '/usr/local/bin/CutyCapt'); //The path to CutyCapt.
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if(! defined('WEBSHOT_XVFB') ) define ('WEBSHOT_XVFB', '/usr/bin/xvfb-run'); //The path to the Xvfb server
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if(! defined('WEBSHOT_SCREEN_X') ) define ('WEBSHOT_SCREEN_X', '1024'); //1024 works ok
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if(! defined('WEBSHOT_SCREEN_Y') ) define ('WEBSHOT_SCREEN_Y', '768'); //768 works ok
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if(! defined('WEBSHOT_COLOR_DEPTH') ) define ('WEBSHOT_COLOR_DEPTH', '24'); //I haven't tested anything besides 24
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if(! defined('WEBSHOT_IMAGE_FORMAT') ) define ('WEBSHOT_IMAGE_FORMAT', 'png'); //png is about 2.5 times the size of jpg but is a LOT better quality
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if(! defined('WEBSHOT_TIMEOUT') ) define ('WEBSHOT_TIMEOUT', '20'); //Seconds to wait for a webshot
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if(! defined('WEBSHOT_USER_AGENT') ) define ('WEBSHOT_USER_AGENT', "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.18) Gecko/20110614 Firefox/3.6.18"); //I hate to do this, but a non-browser robot user agent might not show what humans see. So we pretend to be Firefox
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if(! defined('WEBSHOT_JAVASCRIPT_ON') ) define ('WEBSHOT_JAVASCRIPT_ON', true); //Setting to false might give you a slight speedup and block ads. But it could cause other issues.
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if(! defined('WEBSHOT_JAVA_ON') ) define ('WEBSHOT_JAVA_ON', false); //Have only tested this as fase
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if(! defined('WEBSHOT_PLUGINS_ON') ) define ('WEBSHOT_PLUGINS_ON', true); //Enable flash and other plugins
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if(! defined('WEBSHOT_PROXY') ) define ('WEBSHOT_PROXY', ''); //In case you're behind a proxy server.
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if(! defined('WEBSHOT_XVFB_RUNNING') ) define ('WEBSHOT_XVFB_RUNNING', false); //ADVANCED: Enable this if you've got Xvfb running in the background.
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// If ALLOW_EXTERNAL is true and ALLOW_ALL_EXTERNAL_SITES is false, then external images will only be fetched from these domains and their subdomains.
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if(! isset($ALLOWED_SITES)){
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$ALLOWED_SITES = array (
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'flickr.com',
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'staticflickr.com',
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'picasa.com',
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'img.youtube.com',
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'upload.wikimedia.org',
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'photobucket.com',
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'imgur.com',
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'imageshack.us',
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'tinypic.com',
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);
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}
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// -------------------------------------------------------------
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// -------------- STOP EDITING CONFIGURATION HERE --------------
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// -------------------------------------------------------------
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timthumb::start();
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class timthumb {
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protected $src = "";
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protected $is404 = false;
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protected $docRoot = "";
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protected $lastURLError = false;
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protected $localImage = "";
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protected $localImageMTime = 0;
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protected $url = false;
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protected $myHost = "";
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protected $isURL = false;
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protected $cachefile = '';
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protected $errors = array();
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protected $toDeletes = array();
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protected $cacheDirectory = '';
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protected $startTime = 0;
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protected $lastBenchTime = 0;
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protected $cropTop = false;
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protected $salt = "";
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protected $fileCacheVersion = 1; //Generally if timthumb.php is modifed (upgraded) then the salt changes and all cache files are recreated. This is a backup mechanism to force regen.
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protected $filePrependSecurityBlock = "<?php die('Execution denied!'); //"; //Designed to have three letter mime type, space, question mark and greater than symbol appended. 6 bytes total.
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protected static $curlDataWritten = 0;
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protected static $curlFH = false;
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public static function start(){
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$tim = new timthumb();
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$tim->handleErrors();
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$tim->securityChecks();
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if($tim->tryBrowserCache()){
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exit(0);
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}
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$tim->handleErrors();
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if(FILE_CACHE_ENABLED && $tim->tryServerCache()){
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exit(0);
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}
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$tim->handleErrors();
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$tim->run();
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$tim->handleErrors();
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exit(0);
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}
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public function __construct(){
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global $ALLOWED_SITES;
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$this->startTime = microtime(true);
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date_default_timezone_set('UTC');
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$this->debug(1, "Starting new request from " . $this->getIP() . " to " . $_SERVER['REQUEST_URI']);
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$this->calcDocRoot();
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//On windows systems I'm assuming fileinode returns an empty string or a number that doesn't change. Check this.
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$this->salt = @filemtime(__FILE__) . '-' . @fileinode(__FILE__);
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$this->debug(3, "Salt is: " . $this->salt);
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if(FILE_CACHE_DIRECTORY){
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if(! is_dir(FILE_CACHE_DIRECTORY)){
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@mkdir(FILE_CACHE_DIRECTORY);
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if(! is_dir(FILE_CACHE_DIRECTORY)){
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$this->error("Could not create the file cache directory.");
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return false;
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}
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}
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$this->cacheDirectory = FILE_CACHE_DIRECTORY;
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if (!touch($this->cacheDirectory . '/index.html')) {
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$this->error("Could note create the index.html file - to fix this create an empty file named index.html file in the cache directory.");
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}
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} else {
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$this->cacheDirectory = sys_get_temp_dir();
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}
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//Clean the cache before we do anything because we don't want the first visitor after FILE_CACHE_TIME_BETWEEN_CLEANS expires to get a stale image.
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$this->cleanCache();
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$this->myHost = preg_replace('/^www\./i', '', $_SERVER['HTTP_HOST']);
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$this->src = $this->param('src');
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$this->url = parse_url($this->src);
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if(strlen($this->src) <= 3){
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$this->error("No image specified");
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return false;
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}
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if(BLOCK_EXTERNAL_LEECHERS && array_key_exists('HTTP_REFERER', $_SERVER) && (! preg_match('/^https?:\/\/(?:www\.)?' . $this->myHost . '(?:$|\/)/i', $_SERVER['HTTP_REFERER']))){
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// base64 encoded red image that says 'no hotlinkers'
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// nothing to worry about! :)
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$imgData = base64_decode("R0lGODlhUAAMAIAAAP8AAP///yH5BAAHAP8ALAAAAABQAAwAAAJpjI+py+0Po5y0OgAMjjv01YUZ\nOGplhWXfNa6JCLnWkXplrcBmW+spbwvaVr/cDyg7IoFC2KbYVC2NQ5MQ4ZNao9Ynzjl9ScNYpneb\nDULB3RP6JuPuaGfuuV4fumf8PuvqFyhYtjdoeFgAADs=");
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header('Content-Type: image/gif');
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header('Content-Length: ' . sizeof($imgData));
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header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
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header("Pragma: no-cache");
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header('Expires: ' . gmdate ('D, d M Y H:i:s', time()));
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echo $imgData;
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return false;
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exit(0);
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}
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if(preg_match('/https?:\/\/(?:www\.)?' . $this->myHost . '(?:$|\/)/i', $this->src)){
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$this->src = preg_replace('/https?:\/\/(?:www\.)?' . $this->myHost . '/i', '', $this->src);
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}
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if(preg_match('/^https?:\/\/[^\/]+/i', $this->src)){
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$this->debug(2, "Is a request for an external URL: " . $this->src);
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$this->isURL = true;
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} else {
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$this->debug(2, "Is a request for an internal file: " . $this->src);
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}
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if($this->isURL && (! ALLOW_EXTERNAL)){
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$this->error("You are not allowed to fetch images from an external website.");
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return false;
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}
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if($this->isURL){
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if(ALLOW_ALL_EXTERNAL_SITES){
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$this->debug(2, "Fetching from all external sites is enabled.");
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} else {
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$this->debug(2, "Fetching only from selected external sites is enabled.");
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$allowed = false;
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foreach($ALLOWED_SITES as $site){
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if ((strtolower(substr($this->url['host'],-strlen($site)-1)) === strtolower(".$site")) || (strtolower($this->url['host'])===strtolower($site))) {
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$this->debug(3, "URL hostname {$this->url['host']} matches $site so allowing.");
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$allowed = true;
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}
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}
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if(! $allowed){
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return $this->error("You may not fetch images from that site. To enable this site in timthumb, you can either add it to \$ALLOWED_SITES and set ALLOW_EXTERNAL=true. Or you can set ALLOW_ALL_EXTERNAL_SITES=true, depending on your security needs.");
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}
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}
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}
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$cachePrefix = ($this->isURL ? '_ext_' : '_int_');
|
|
|
260 |
if($this->isURL){
|
|
|
261 |
$arr = explode('&', $_SERVER ['QUERY_STRING']);
|
|
|
262 |
asort($arr);
|
|
|
263 |
$this->cachefile = $this->cacheDirectory . '/' . FILE_CACHE_PREFIX . $cachePrefix . md5($this->salt . implode('', $arr) . $this->fileCacheVersion) . FILE_CACHE_SUFFIX;
|
|
|
264 |
} else {
|
|
|
265 |
$this->localImage = $this->getLocalImagePath($this->src);
|
|
|
266 |
if(! $this->localImage){
|
|
|
267 |
$this->debug(1, "Could not find the local image: {$this->localImage}");
|
|
|
268 |
$this->error("Could not find the internal image you specified.");
|
|
|
269 |
$this->set404();
|
|
|
270 |
return false;
|
|
|
271 |
}
|
|
|
272 |
$this->debug(1, "Local image path is {$this->localImage}");
|
|
|
273 |
$this->localImageMTime = @filemtime($this->localImage);
|
|
|
274 |
//We include the mtime of the local file in case in changes on disk.
|
|
|
275 |
$this->cachefile = $this->cacheDirectory . '/' . FILE_CACHE_PREFIX . $cachePrefix . md5($this->salt . $this->localImageMTime . $_SERVER ['QUERY_STRING'] . $this->fileCacheVersion) . FILE_CACHE_SUFFIX;
|
|
|
276 |
}
|
|
|
277 |
$this->debug(2, "Cache file is: " . $this->cachefile);
|
|
|
278 |
|
|
|
279 |
return true;
|
|
|
280 |
}
|
|
|
281 |
public function __destruct(){
|
|
|
282 |
foreach($this->toDeletes as $del){
|
|
|
283 |
$this->debug(2, "Deleting temp file $del");
|
|
|
284 |
@unlink($del);
|
|
|
285 |
}
|
|
|
286 |
}
|
|
|
287 |
public function run(){
|
|
|
288 |
if($this->isURL){
|
|
|
289 |
if(! ALLOW_EXTERNAL){
|
|
|
290 |
$this->debug(1, "Got a request for an external image but ALLOW_EXTERNAL is disabled so returning error msg.");
|
|
|
291 |
$this->error("You are not allowed to fetch images from an external website.");
|
|
|
292 |
return false;
|
|
|
293 |
}
|
|
|
294 |
$this->debug(3, "Got request for external image. Starting serveExternalImage.");
|
|
|
295 |
if($this->param('webshot')){
|
|
|
296 |
if(WEBSHOT_ENABLED){
|
|
|
297 |
$this->debug(3, "webshot param is set, so we're going to take a webshot.");
|
|
|
298 |
$this->serveWebshot();
|
|
|
299 |
} else {
|
|
|
300 |
$this->error("You added the webshot parameter but webshots are disabled on this server. You need to set WEBSHOT_ENABLED == true to enable webshots.");
|
|
|
301 |
}
|
|
|
302 |
} else {
|
|
|
303 |
$this->debug(3, "webshot is NOT set so we're going to try to fetch a regular image.");
|
|
|
304 |
$this->serveExternalImage();
|
|
|
305 |
|
|
|
306 |
}
|
|
|
307 |
} else {
|
|
|
308 |
$this->debug(3, "Got request for internal image. Starting serveInternalImage()");
|
|
|
309 |
$this->serveInternalImage();
|
|
|
310 |
}
|
|
|
311 |
return true;
|
|
|
312 |
}
|
|
|
313 |
protected function handleErrors(){
|
|
|
314 |
if($this->haveErrors()){
|
|
|
315 |
if(NOT_FOUND_IMAGE && $this->is404()){
|
|
|
316 |
if($this->serveImg(NOT_FOUND_IMAGE)){
|
|
|
317 |
exit(0);
|
|
|
318 |
} else {
|
|
|
319 |
$this->error("Additionally, the 404 image that is configured could not be found or there was an error serving it.");
|
|
|
320 |
}
|
|
|
321 |
}
|
|
|
322 |
if(ERROR_IMAGE){
|
|
|
323 |
if($this->serveImg(ERROR_IMAGE)){
|
|
|
324 |
exit(0);
|
|
|
325 |
} else {
|
|
|
326 |
$this->error("Additionally, the error image that is configured could not be found or there was an error serving it.");
|
|
|
327 |
}
|
|
|
328 |
}
|
|
|
329 |
|
|
|
330 |
$this->serveErrors();
|
|
|
331 |
exit(0);
|
|
|
332 |
}
|
|
|
333 |
return false;
|
|
|
334 |
}
|
|
|
335 |
protected function tryBrowserCache(){
|
|
|
336 |
if(BROWSER_CACHE_DISABLE){ $this->debug(3, "Browser caching is disabled"); return false; }
|
|
|
337 |
if(!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) ){
|
|
|
338 |
$this->debug(3, "Got a conditional get");
|
|
|
339 |
$mtime = false;
|
|
|
340 |
//We've already checked if the real file exists in the constructor
|
|
|
341 |
if(! is_file($this->cachefile)){
|
|
|
342 |
//If we don't have something cached, regenerate the cached image.
|
|
|
343 |
return false;
|
|
|
344 |
}
|
|
|
345 |
if($this->localImageMTime){
|
|
|
346 |
$mtime = $this->localImageMTime;
|
|
|
347 |
$this->debug(3, "Local real file's modification time is $mtime");
|
|
|
348 |
} else if(is_file($this->cachefile)){ //If it's not a local request then use the mtime of the cached file to determine the 304
|
|
|
349 |
$mtime = @filemtime($this->cachefile);
|
|
|
350 |
$this->debug(3, "Cached file's modification time is $mtime");
|
|
|
351 |
}
|
|
|
352 |
if(! $mtime){ return false; }
|
|
|
353 |
|
|
|
354 |
$iftime = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']);
|
|
|
355 |
$this->debug(3, "The conditional get's if-modified-since unixtime is $iftime");
|
|
|
356 |
if($iftime < 1){
|
|
|
357 |
$this->debug(3, "Got an invalid conditional get modified since time. Returning false.");
|
|
|
358 |
return false;
|
|
|
359 |
}
|
|
|
360 |
if($iftime < $mtime){ //Real file or cache file has been modified since last request, so force refetch.
|
|
|
361 |
$this->debug(3, "File has been modified since last fetch.");
|
|
|
362 |
return false;
|
|
|
363 |
} else { //Otherwise serve a 304
|
|
|
364 |
$this->debug(3, "File has not been modified since last get, so serving a 304.");
|
|
|
365 |
header ($_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified');
|
|
|
366 |
$this->debug(1, "Returning 304 not modified");
|
|
|
367 |
return true;
|
|
|
368 |
}
|
|
|
369 |
}
|
|
|
370 |
return false;
|
|
|
371 |
}
|
|
|
372 |
protected function tryServerCache(){
|
|
|
373 |
$this->debug(3, "Trying server cache");
|
|
|
374 |
if(file_exists($this->cachefile)){
|
|
|
375 |
$this->debug(3, "Cachefile {$this->cachefile} exists");
|
|
|
376 |
if($this->isURL){
|
|
|
377 |
$this->debug(3, "This is an external request, so checking if the cachefile is empty which means the request failed previously.");
|
|
|
378 |
if(filesize($this->cachefile) < 1){
|
|
|
379 |
$this->debug(3, "Found an empty cachefile indicating a failed earlier request. Checking how old it is.");
|
|
|
380 |
//Fetching error occured previously
|
|
|
381 |
if(time() - @filemtime($this->cachefile) > WAIT_BETWEEN_FETCH_ERRORS){
|
|
|
382 |
$this->debug(3, "File is older than " . WAIT_BETWEEN_FETCH_ERRORS . " seconds. Deleting and returning false so app can try and load file.");
|
|
|
383 |
@unlink($this->cachefile);
|
|
|
384 |
return false; //to indicate we didn't serve from cache and app should try and load
|
|
|
385 |
} else {
|
|
|
386 |
$this->debug(3, "Empty cachefile is still fresh so returning message saying we had an error fetching this image from remote host.");
|
|
|
387 |
$this->set404();
|
|
|
388 |
$this->error("An error occured fetching image.");
|
|
|
389 |
return false;
|
|
|
390 |
}
|
|
|
391 |
}
|
|
|
392 |
} else {
|
|
|
393 |
$this->debug(3, "Trying to serve cachefile {$this->cachefile}");
|
|
|
394 |
}
|
|
|
395 |
if($this->serveCacheFile()){
|
|
|
396 |
$this->debug(3, "Succesfully served cachefile {$this->cachefile}");
|
|
|
397 |
return true;
|
|
|
398 |
} else {
|
|
|
399 |
$this->debug(3, "Failed to serve cachefile {$this->cachefile} - Deleting it from cache.");
|
|
|
400 |
//Image serving failed. We can't retry at this point, but lets remove it from cache so the next request recreates it
|
|
|
401 |
@unlink($this->cachefile);
|
|
|
402 |
return true;
|
|
|
403 |
}
|
|
|
404 |
}
|
|
|
405 |
}
|
|
|
406 |
protected function error($err){
|
|
|
407 |
$this->debug(3, "Adding error message: $err");
|
|
|
408 |
$this->errors[] = $err;
|
|
|
409 |
return false;
|
|
|
410 |
|
|
|
411 |
}
|
|
|
412 |
protected function haveErrors(){
|
|
|
413 |
if(sizeof($this->errors) > 0){
|
|
|
414 |
return true;
|
|
|
415 |
}
|
|
|
416 |
return false;
|
|
|
417 |
}
|
|
|
418 |
protected function serveErrors(){
|
|
|
419 |
$html = '<ul>';
|
|
|
420 |
foreach($this->errors as $err){
|
|
|
421 |
$html .= '<li>' . htmlentities($err) . '</li>';
|
|
|
422 |
}
|
|
|
423 |
$html .= '</ul>';
|
|
|
424 |
header ($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
|
|
|
425 |
echo '<h1>A TimThumb error has occured</h1>The following error(s) occured:<br />' . $html . '<br />';
|
|
|
426 |
echo '<br />Query String : ' . htmlentities ($_SERVER['QUERY_STRING']);
|
|
|
427 |
echo '<br />TimThumb version : ' . VERSION . '</pre>';
|
|
|
428 |
}
|
|
|
429 |
protected function serveInternalImage(){
|
|
|
430 |
$this->debug(3, "Local image path is $this->localImage");
|
|
|
431 |
if(! $this->localImage){
|
|
|
432 |
$this->sanityFail("localImage not set after verifying it earlier in the code.");
|
|
|
433 |
return false;
|
|
|
434 |
}
|
|
|
435 |
$fileSize = filesize($this->localImage);
|
|
|
436 |
if($fileSize > MAX_FILE_SIZE){
|
|
|
437 |
$this->error("The file you specified is greater than the maximum allowed file size.");
|
|
|
438 |
return false;
|
|
|
439 |
}
|
|
|
440 |
if($fileSize <= 0){
|
|
|
441 |
$this->error("The file you specified is <= 0 bytes.");
|
|
|
442 |
return false;
|
|
|
443 |
}
|
|
|
444 |
$this->debug(3, "Calling processImageAndWriteToCache() for local image.");
|
|
|
445 |
if($this->processImageAndWriteToCache($this->localImage)){
|
|
|
446 |
$this->serveCacheFile();
|
|
|
447 |
return true;
|
|
|
448 |
} else {
|
|
|
449 |
return false;
|
|
|
450 |
}
|
|
|
451 |
}
|
|
|
452 |
protected function cleanCache(){
|
|
|
453 |
if (FILE_CACHE_TIME_BETWEEN_CLEANS < 0) {
|
|
|
454 |
return;
|
|
|
455 |
}
|
|
|
456 |
$this->debug(3, "cleanCache() called");
|
|
|
457 |
$lastCleanFile = $this->cacheDirectory . '/timthumb_cacheLastCleanTime.touch';
|
|
|
458 |
|
|
|
459 |
//If this is a new timthumb installation we need to create the file
|
|
|
460 |
if(! is_file($lastCleanFile)){
|
|
|
461 |
$this->debug(1, "File tracking last clean doesn't exist. Creating $lastCleanFile");
|
|
|
462 |
if (!touch($lastCleanFile)) {
|
|
|
463 |
$this->error("Could note create cache clean timestamp file.");
|
|
|
464 |
}
|
|
|
465 |
return;
|
|
|
466 |
}
|
|
|
467 |
if(@filemtime($lastCleanFile) < (time() - FILE_CACHE_TIME_BETWEEN_CLEANS) ){ //Cache was last cleaned more than 1 day ago
|
|
|
468 |
$this->debug(1, "Cache was last cleaned more than " . FILE_CACHE_TIME_BETWEEN_CLEANS . " seconds ago. Cleaning now.");
|
|
|
469 |
// Very slight race condition here, but worst case we'll have 2 or 3 servers cleaning the cache simultaneously once a day.
|
|
|
470 |
if (!touch($lastCleanFile)) {
|
|
|
471 |
$this->error("Could note create cache clean timestamp file.");
|
|
|
472 |
}
|
|
|
473 |
$files = glob($this->cacheDirectory . '/*' . FILE_CACHE_SUFFIX);
|
|
|
474 |
$timeAgo = time() - FILE_CACHE_MAX_FILE_AGE;
|
|
|
475 |
foreach($files as $file){
|
|
|
476 |
if(@filemtime($file) < $timeAgo){
|
|
|
477 |
$this->debug(3, "Deleting cache file $file older than max age: " . FILE_CACHE_MAX_FILE_AGE . " seconds");
|
|
|
478 |
@unlink($file);
|
|
|
479 |
}
|
|
|
480 |
}
|
|
|
481 |
return true;
|
|
|
482 |
} else {
|
|
|
483 |
$this->debug(3, "Cache was cleaned less than " . FILE_CACHE_TIME_BETWEEN_CLEANS . " seconds ago so no cleaning needed.");
|
|
|
484 |
}
|
|
|
485 |
return false;
|
|
|
486 |
}
|
|
|
487 |
protected function processImageAndWriteToCache($localImage){
|
|
|
488 |
$sData = getimagesize($localImage);
|
|
|
489 |
$origType = $sData[2];
|
|
|
490 |
$mimeType = $sData['mime'];
|
|
|
491 |
|
|
|
492 |
$this->debug(3, "Mime type of image is $mimeType");
|
|
|
493 |
if(! preg_match('/^image\/(?:gif|jpg|jpeg|png)$/i', $mimeType)){
|
|
|
494 |
return $this->error("The image being resized is not a valid gif, jpg or png.");
|
|
|
495 |
}
|
|
|
496 |
|
|
|
497 |
if (!function_exists ('imagecreatetruecolor')) {
|
|
|
498 |
return $this->error('GD Library Error: imagecreatetruecolor does not exist - please contact your webhost and ask them to install the GD library');
|
|
|
499 |
}
|
|
|
500 |
|
|
|
501 |
if (function_exists ('imagefilter') && defined ('IMG_FILTER_NEGATE')) {
|
|
|
502 |
$imageFilters = array (
|
|
|
503 |
1 => array (IMG_FILTER_NEGATE, 0),
|
|
|
504 |
2 => array (IMG_FILTER_GRAYSCALE, 0),
|
|
|
505 |
3 => array (IMG_FILTER_BRIGHTNESS, 1),
|
|
|
506 |
4 => array (IMG_FILTER_CONTRAST, 1),
|
|
|
507 |
5 => array (IMG_FILTER_COLORIZE, 4),
|
|
|
508 |
6 => array (IMG_FILTER_EDGEDETECT, 0),
|
|
|
509 |
7 => array (IMG_FILTER_EMBOSS, 0),
|
|
|
510 |
8 => array (IMG_FILTER_GAUSSIAN_BLUR, 0),
|
|
|
511 |
9 => array (IMG_FILTER_SELECTIVE_BLUR, 0),
|
|
|
512 |
10 => array (IMG_FILTER_MEAN_REMOVAL, 0),
|
|
|
513 |
11 => array (IMG_FILTER_SMOOTH, 0),
|
|
|
514 |
);
|
|
|
515 |
}
|
|
|
516 |
|
|
|
517 |
// get standard input properties
|
|
|
518 |
$new_width = (int) abs ($this->param('w', 0));
|
|
|
519 |
$new_height = (int) abs ($this->param('h', 0));
|
|
|
520 |
$zoom_crop = (int) $this->param('zc', DEFAULT_ZC);
|
|
|
521 |
$quality = (int) abs ($this->param('q', DEFAULT_Q));
|
|
|
522 |
$align = $this->cropTop ? 't' : $this->param('a', 'c');
|
|
|
523 |
$filters = $this->param('f', DEFAULT_F);
|
|
|
524 |
$sharpen = (bool) $this->param('s', DEFAULT_S);
|
|
|
525 |
$canvas_color = $this->param('cc', DEFAULT_CC);
|
|
|
526 |
|
|
|
527 |
// set default width and height if neither are set already
|
|
|
528 |
if ($new_width == 0 && $new_height == 0) {
|
|
|
529 |
$new_width = 100;
|
|
|
530 |
$new_height = 100;
|
|
|
531 |
}
|
|
|
532 |
|
|
|
533 |
// ensure size limits can not be abused
|
|
|
534 |
$new_width = min ($new_width, MAX_WIDTH);
|
|
|
535 |
$new_height = min ($new_height, MAX_HEIGHT);
|
|
|
536 |
|
|
|
537 |
// set memory limit to be able to have enough space to resize larger images
|
|
|
538 |
$this->setMemoryLimit();
|
|
|
539 |
|
|
|
540 |
// open the existing image
|
|
|
541 |
$image = $this->openImage ($mimeType, $localImage);
|
|
|
542 |
if ($image === false) {
|
|
|
543 |
return $this->error('Unable to open image.');
|
|
|
544 |
}
|
|
|
545 |
|
|
|
546 |
// Get original width and height
|
|
|
547 |
$width = imagesx ($image);
|
|
|
548 |
$height = imagesy ($image);
|
|
|
549 |
$origin_x = 0;
|
|
|
550 |
$origin_y = 0;
|
|
|
551 |
|
|
|
552 |
// generate new w/h if not provided
|
|
|
553 |
if ($new_width && !$new_height) {
|
|
|
554 |
$new_height = floor ($height * ($new_width / $width));
|
|
|
555 |
} else if ($new_height && !$new_width) {
|
|
|
556 |
$new_width = floor ($width * ($new_height / $height));
|
|
|
557 |
}
|
|
|
558 |
|
|
|
559 |
// scale down and add borders
|
|
|
560 |
if ($zoom_crop == 3) {
|
|
|
561 |
|
|
|
562 |
$final_height = $height * ($new_width / $width);
|
|
|
563 |
|
|
|
564 |
if ($final_height > $new_height) {
|
|
|
565 |
$new_width = $width * ($new_height / $height);
|
|
|
566 |
} else {
|
|
|
567 |
$new_height = $final_height;
|
|
|
568 |
}
|
|
|
569 |
|
|
|
570 |
}
|
|
|
571 |
|
|
|
572 |
// create a new true color image
|
|
|
573 |
$canvas = imagecreatetruecolor ($new_width, $new_height);
|
|
|
574 |
imagealphablending ($canvas, false);
|
|
|
575 |
|
|
|
576 |
if (strlen ($canvas_color) < 6) {
|
|
|
577 |
$canvas_color = 'ffffff';
|
|
|
578 |
}
|
|
|
579 |
|
|
|
580 |
$canvas_color_R = hexdec (substr ($canvas_color, 0, 2));
|
|
|
581 |
$canvas_color_G = hexdec (substr ($canvas_color, 2, 2));
|
|
|
582 |
$canvas_color_B = hexdec (substr ($canvas_color, 2, 2));
|
|
|
583 |
|
|
|
584 |
// Create a new transparent color for image
|
|
|
585 |
$color = imagecolorallocatealpha ($canvas, $canvas_color_R, $canvas_color_G, $canvas_color_B, 127);
|
|
|
586 |
|
|
|
587 |
// Completely fill the background of the new image with allocated color.
|
|
|
588 |
imagefill ($canvas, 0, 0, $color);
|
|
|
589 |
|
|
|
590 |
// scale down and add borders
|
|
|
591 |
if ($zoom_crop == 2) {
|
|
|
592 |
|
|
|
593 |
$final_height = $height * ($new_width / $width);
|
|
|
594 |
|
|
|
595 |
if ($final_height > $new_height) {
|
|
|
596 |
|
|
|
597 |
$origin_x = $new_width / 2;
|
|
|
598 |
$new_width = $width * ($new_height / $height);
|
|
|
599 |
$origin_x = round ($origin_x - ($new_width / 2));
|
|
|
600 |
|
|
|
601 |
} else {
|
|
|
602 |
|
|
|
603 |
$origin_y = $new_height / 2;
|
|
|
604 |
$new_height = $final_height;
|
|
|
605 |
$origin_y = round ($origin_y - ($new_height / 2));
|
|
|
606 |
|
|
|
607 |
}
|
|
|
608 |
|
|
|
609 |
}
|
|
|
610 |
|
|
|
611 |
// Restore transparency blending
|
|
|
612 |
imagesavealpha ($canvas, true);
|
|
|
613 |
|
|
|
614 |
if ($zoom_crop > 0) {
|
|
|
615 |
|
|
|
616 |
$src_x = $src_y = 0;
|
|
|
617 |
$src_w = $width;
|
|
|
618 |
$src_h = $height;
|
|
|
619 |
|
|
|
620 |
$cmp_x = $width / $new_width;
|
|
|
621 |
$cmp_y = $height / $new_height;
|
|
|
622 |
|
|
|
623 |
// calculate x or y coordinate and width or height of source
|
|
|
624 |
if ($cmp_x > $cmp_y) {
|
|
|
625 |
|
|
|
626 |
$src_w = round ($width / $cmp_x * $cmp_y);
|
|
|
627 |
$src_x = round (($width - ($width / $cmp_x * $cmp_y)) / 2);
|
|
|
628 |
|
|
|
629 |
} else if ($cmp_y > $cmp_x) {
|
|
|
630 |
|
|
|
631 |
$src_h = round ($height / $cmp_y * $cmp_x);
|
|
|
632 |
$src_y = round (($height - ($height / $cmp_y * $cmp_x)) / 2);
|
|
|
633 |
|
|
|
634 |
}
|
|
|
635 |
|
|
|
636 |
// positional cropping!
|
|
|
637 |
if ($align) {
|
|
|
638 |
if (strpos ($align, 't') !== false) {
|
|
|
639 |
$src_y = 0;
|
|
|
640 |
}
|
|
|
641 |
if (strpos ($align, 'b') !== false) {
|
|
|
642 |
$src_y = $height - $src_h;
|
|
|
643 |
}
|
|
|
644 |
if (strpos ($align, 'l') !== false) {
|
|
|
645 |
$src_x = 0;
|
|
|
646 |
}
|
|
|
647 |
if (strpos ($align, 'r') !== false) {
|
|
|
648 |
$src_x = $width - $src_w;
|
|
|
649 |
}
|
|
|
650 |
}
|
|
|
651 |
|
|
|
652 |
imagecopyresampled ($canvas, $image, $origin_x, $origin_y, $src_x, $src_y, $new_width, $new_height, $src_w, $src_h);
|
|
|
653 |
|
|
|
654 |
} else {
|
|
|
655 |
|
|
|
656 |
// copy and resize part of an image with resampling
|
|
|
657 |
imagecopyresampled ($canvas, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
|
|
|
658 |
|
|
|
659 |
}
|
|
|
660 |
|
|
|
661 |
if ($filters != '' && function_exists ('imagefilter') && defined ('IMG_FILTER_NEGATE')) {
|
|
|
662 |
// apply filters to image
|
|
|
663 |
$filterList = explode ('|', $filters);
|
|
|
664 |
foreach ($filterList as $fl) {
|
|
|
665 |
|
|
|
666 |
$filterSettings = explode (',', $fl);
|
|
|
667 |
if (isset ($imageFilters[$filterSettings[0]])) {
|
|
|
668 |
|
|
|
669 |
for ($i = 0; $i < 4; $i ++) {
|
|
|
670 |
if (!isset ($filterSettings[$i])) {
|
|
|
671 |
$filterSettings[$i] = null;
|
|
|
672 |
} else {
|
|
|
673 |
$filterSettings[$i] = (int) $filterSettings[$i];
|
|
|
674 |
}
|
|
|
675 |
}
|
|
|
676 |
|
|
|
677 |
switch ($imageFilters[$filterSettings[0]][1]) {
|
|
|
678 |
|
|
|
679 |
case 1:
|
|
|
680 |
|
|
|
681 |
imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1]);
|
|
|
682 |
break;
|
|
|
683 |
|
|
|
684 |
case 2:
|
|
|
685 |
|
|
|
686 |
imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1], $filterSettings[2]);
|
|
|
687 |
break;
|
|
|
688 |
|
|
|
689 |
case 3:
|
|
|
690 |
|
|
|
691 |
imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1], $filterSettings[2], $filterSettings[3]);
|
|
|
692 |
break;
|
|
|
693 |
|
|
|
694 |
case 4:
|
|
|
695 |
|
|
|
696 |
imagefilter ($canvas, $imageFilters[$filterSettings[0]][0], $filterSettings[1], $filterSettings[2], $filterSettings[3], $filterSettings[4]);
|
|
|
697 |
break;
|
|
|
698 |
|
|
|
699 |
default:
|
|
|
700 |
|
|
|
701 |
imagefilter ($canvas, $imageFilters[$filterSettings[0]][0]);
|
|
|
702 |
break;
|
|
|
703 |
|
|
|
704 |
}
|
|
|
705 |
}
|
|
|
706 |
}
|
|
|
707 |
}
|
|
|
708 |
|
|
|
709 |
// sharpen image
|
|
|
710 |
if ($sharpen && function_exists ('imageconvolution')) {
|
|
|
711 |
|
|
|
712 |
$sharpenMatrix = array (
|
|
|
713 |
array (-1,-1,-1),
|
|
|
714 |
array (-1,16,-1),
|
|
|
715 |
array (-1,-1,-1),
|
|
|
716 |
);
|
|
|
717 |
|
|
|
718 |
$divisor = 8;
|
|
|
719 |
$offset = 0;
|
|
|
720 |
|
|
|
721 |
imageconvolution ($canvas, $sharpenMatrix, $divisor, $offset);
|
|
|
722 |
|
|
|
723 |
}
|
|
|
724 |
//Straight from Wordpress core code. Reduces filesize by up to 70% for PNG's
|
|
|
725 |
if ( (IMAGETYPE_PNG == $origType || IMAGETYPE_GIF == $origType) && function_exists('imageistruecolor') && !imageistruecolor( $image ) && imagecolortransparent( $image ) > 0 ){
|
|
|
726 |
imagetruecolortopalette( $canvas, false, imagecolorstotal( $image ) );
|
|
|
727 |
}
|
|
|
728 |
|
|
|
729 |
$imgType = "";
|
|
|
730 |
$tempfile = tempnam($this->cacheDirectory, 'timthumb_tmpimg_');
|
|
|
731 |
if(preg_match('/^image\/(?:jpg|jpeg)$/i', $mimeType)){
|
|
|
732 |
$imgType = 'jpg';
|
|
|
733 |
imagejpeg($canvas, $tempfile, $quality);
|
|
|
734 |
} else if(preg_match('/^image\/png$/i', $mimeType)){
|
|
|
735 |
$imgType = 'png';
|
|
|
736 |
imagepng($canvas, $tempfile, floor($quality * 0.09));
|
|
|
737 |
} else if(preg_match('/^image\/gif$/i', $mimeType)){
|
|
|
738 |
$imgType = 'gif';
|
|
|
739 |
imagegif($canvas, $tempfile);
|
|
|
740 |
} else {
|
|
|
741 |
return $this->sanityFail("Could not match mime type after verifying it previously.");
|
|
|
742 |
}
|
|
|
743 |
|
|
|
744 |
if($imgType == 'png' && OPTIPNG_ENABLED && OPTIPNG_PATH && @is_file(OPTIPNG_PATH)){
|
|
|
745 |
$exec = OPTIPNG_PATH;
|
|
|
746 |
$this->debug(3, "optipng'ing $tempfile");
|
|
|
747 |
$presize = filesize($tempfile);
|
|
|
748 |
$out = `$exec -o1 $tempfile`; //you can use up to -o7 but it really slows things down
|
|
|
749 |
clearstatcache();
|
|
|
750 |
$aftersize = filesize($tempfile);
|
|
|
751 |
$sizeDrop = $presize - $aftersize;
|
|
|
752 |
if($sizeDrop > 0){
|
|
|
753 |
$this->debug(1, "optipng reduced size by $sizeDrop");
|
|
|
754 |
} else if($sizeDrop < 0){
|
|
|
755 |
$this->debug(1, "optipng increased size! Difference was: $sizeDrop");
|
|
|
756 |
} else {
|
|
|
757 |
$this->debug(1, "optipng did not change image size.");
|
|
|
758 |
}
|
|
|
759 |
} else if($imgType == 'png' && PNGCRUSH_ENABLED && PNGCRUSH_PATH && @is_file(PNGCRUSH_PATH)){
|
|
|
760 |
$exec = PNGCRUSH_PATH;
|
|
|
761 |
$tempfile2 = tempnam($this->cacheDirectory, 'timthumb_tmpimg_');
|
|
|
762 |
$this->debug(3, "pngcrush'ing $tempfile to $tempfile2");
|
|
|
763 |
$out = `$exec $tempfile $tempfile2`;
|
|
|
764 |
$todel = "";
|
|
|
765 |
if(is_file($tempfile2)){
|
|
|
766 |
$sizeDrop = filesize($tempfile) - filesize($tempfile2);
|
|
|
767 |
if($sizeDrop > 0){
|
|
|
768 |
$this->debug(1, "pngcrush was succesful and gave a $sizeDrop byte size reduction");
|
|
|
769 |
$todel = $tempfile;
|
|
|
770 |
$tempfile = $tempfile2;
|
|
|
771 |
} else {
|
|
|
772 |
$this->debug(1, "pngcrush did not reduce file size. Difference was $sizeDrop bytes.");
|
|
|
773 |
$todel = $tempfile2;
|
|
|
774 |
}
|
|
|
775 |
} else {
|
|
|
776 |
$this->debug(3, "pngcrush failed with output: $out");
|
|
|
777 |
$todel = $tempfile2;
|
|
|
778 |
}
|
|
|
779 |
@unlink($todel);
|
|
|
780 |
}
|
|
|
781 |
|
|
|
782 |
$this->debug(3, "Rewriting image with security header.");
|
|
|
783 |
$tempfile4 = tempnam($this->cacheDirectory, 'timthumb_tmpimg_');
|
|
|
784 |
$context = stream_context_create ();
|
|
|
785 |
$fp = fopen($tempfile,'r',0,$context);
|
|
|
786 |
file_put_contents($tempfile4, $this->filePrependSecurityBlock . $imgType . ' ?' . '>'); //6 extra bytes, first 3 being image type
|
|
|
787 |
file_put_contents($tempfile4, $fp, FILE_APPEND);
|
|
|
788 |
fclose($fp);
|
|
|
789 |
@unlink($tempfile);
|
|
|
790 |
$this->debug(3, "Locking and replacing cache file.");
|
|
|
791 |
$lockFile = $this->cachefile . '.lock';
|
|
|
792 |
$fh = fopen($lockFile, 'w');
|
|
|
793 |
if(! $fh){
|
|
|
794 |
return $this->error("Could not open the lockfile for writing an image.");
|
|
|
795 |
}
|
|
|
796 |
if(flock($fh, LOCK_EX)){
|
|
|
797 |
@unlink($this->cachefile); //rename generally overwrites, but doing this in case of platform specific quirks. File might not exist yet.
|
|
|
798 |
rename($tempfile4, $this->cachefile);
|
|
|
799 |
flock($fh, LOCK_UN);
|
|
|
800 |
fclose($fh);
|
|
|
801 |
@unlink($lockFile);
|
|
|
802 |
} else {
|
|
|
803 |
fclose($fh);
|
|
|
804 |
@unlink($lockFile);
|
|
|
805 |
@unlink($tempfile4);
|
|
|
806 |
return $this->error("Could not get a lock for writing.");
|
|
|
807 |
}
|
|
|
808 |
$this->debug(3, "Done image replace with security header. Cleaning up and running cleanCache()");
|
|
|
809 |
imagedestroy($canvas);
|
|
|
810 |
imagedestroy($image);
|
|
|
811 |
return true;
|
|
|
812 |
}
|
|
|
813 |
protected function calcDocRoot(){
|
|
|
814 |
$docRoot = @$_SERVER['DOCUMENT_ROOT'];
|
|
|
815 |
if (defined('LOCAL_FILE_BASE_DIRECTORY')) {
|
|
|
816 |
$docRoot = LOCAL_FILE_BASE_DIRECTORY;
|
|
|
817 |
}
|
|
|
818 |
if(!isset($docRoot)){
|
|
|
819 |
$this->debug(3, "DOCUMENT_ROOT is not set. This is probably windows. Starting search 1.");
|
|
|
820 |
if(isset($_SERVER['SCRIPT_FILENAME'])){
|
|
|
821 |
$docRoot = str_replace( '\\', '/', substr($_SERVER['SCRIPT_FILENAME'], 0, 0-strlen($_SERVER['PHP_SELF'])));
|
|
|
822 |
$this->debug(3, "Generated docRoot using SCRIPT_FILENAME and PHP_SELF as: $docRoot");
|
|
|
823 |
}
|
|
|
824 |
}
|
|
|
825 |
if(!isset($docRoot)){
|
|
|
826 |
$this->debug(3, "DOCUMENT_ROOT still is not set. Starting search 2.");
|
|
|
827 |
if(isset($_SERVER['PATH_TRANSLATED'])){
|
|
|
828 |
$docRoot = str_replace( '\\', '/', substr(str_replace('\\\\', '\\', $_SERVER['PATH_TRANSLATED']), 0, 0-strlen($_SERVER['PHP_SELF'])));
|
|
|
829 |
$this->debug(3, "Generated docRoot using PATH_TRANSLATED and PHP_SELF as: $docRoot");
|
|
|
830 |
}
|
|
|
831 |
}
|
|
|
832 |
if($docRoot && $_SERVER['DOCUMENT_ROOT'] != '/'){ $docRoot = preg_replace('/\/$/', '', $docRoot); }
|
|
|
833 |
$this->debug(3, "Doc root is: " . $docRoot);
|
|
|
834 |
$this->docRoot = $docRoot;
|
|
|
835 |
|
|
|
836 |
}
|
|
|
837 |
protected function getLocalImagePath($src){
|
|
|
838 |
$src = preg_replace('/^\//', '', $src); //strip off the leading '/'
|
|
|
839 |
if(! $this->docRoot){
|
|
|
840 |
$this->debug(3, "We have no document root set, so as a last resort, lets check if the image is in the current dir and serve that.");
|
|
|
841 |
//We don't support serving images outside the current dir if we don't have a doc root for security reasons.
|
|
|
842 |
$file = preg_replace('/^.*?([^\/\\\\]+)$/', '$1', $src); //strip off any path info and just leave the filename.
|
|
|
843 |
if(is_file($file)){
|
|
|
844 |
return realpath($file);
|
|
|
845 |
}
|
|
|
846 |
return $this->error("Could not find your website document root and the file specified doesn't exist in timthumbs directory. We don't support serving files outside timthumb's directory without a document root for security reasons.");
|
|
|
847 |
} //Do not go past this point without docRoot set
|
|
|
848 |
|
|
|
849 |
//Try src under docRoot
|
|
|
850 |
if(file_exists ($this->docRoot . '/' . $src)) {
|
|
|
851 |
$this->debug(3, "Found file as " . $this->docRoot . '/' . $src);
|
|
|
852 |
$real = realpath($this->docRoot . '/' . $src);
|
|
|
853 |
if(stripos($real, $this->docRoot) == 0){
|
|
|
854 |
return $real;
|
|
|
855 |
} else {
|
|
|
856 |
$this->debug(1, "Security block: The file specified occurs outside the document root.");
|
|
|
857 |
//allow search to continue
|
|
|
858 |
}
|
|
|
859 |
}
|
|
|
860 |
//Check absolute paths and then verify the real path is under doc root
|
|
|
861 |
$absolute = realpath('/' . $src);
|
|
|
862 |
if($absolute && file_exists($absolute)){ //realpath does file_exists check, so can probably skip the exists check here
|
|
|
863 |
$this->debug(3, "Found absolute path: $absolute");
|
|
|
864 |
if(! $this->docRoot){ $this->sanityFail("docRoot not set when checking absolute path."); }
|
|
|
865 |
if(stripos($absolute, $this->docRoot) == 0){
|
|
|
866 |
return $absolute;
|
|
|
867 |
} else {
|
|
|
868 |
$this->debug(1, "Security block: The file specified occurs outside the document root.");
|
|
|
869 |
//and continue search
|
|
|
870 |
}
|
|
|
871 |
}
|
|
|
872 |
|
|
|
873 |
$base = $this->docRoot;
|
|
|
874 |
|
|
|
875 |
// account for Windows directory structure
|
|
|
876 |
if (strstr($_SERVER['SCRIPT_FILENAME'],':')) {
|
|
|
877 |
$sub_directories = explode('\\', str_replace($this->docRoot, '', $_SERVER['SCRIPT_FILENAME']));
|
|
|
878 |
} else {
|
|
|
879 |
$sub_directories = explode('/', str_replace($this->docRoot, '', $_SERVER['SCRIPT_FILENAME']));
|
|
|
880 |
}
|
|
|
881 |
|
|
|
882 |
foreach ($sub_directories as $sub){
|
|
|
883 |
$base .= $sub . '/';
|
|
|
884 |
$this->debug(3, "Trying file as: " . $base . $src);
|
|
|
885 |
if(file_exists($base . $src)){
|
|
|
886 |
$this->debug(3, "Found file as: " . $base . $src);
|
|
|
887 |
$real = realpath($base . $src);
|
|
|
888 |
if(stripos($real, $this->docRoot) == 0){
|
|
|
889 |
return $real;
|
|
|
890 |
} else {
|
|
|
891 |
$this->debug(1, "Security block: The file specified occurs outside the document root.");
|
|
|
892 |
//And continue search
|
|
|
893 |
}
|
|
|
894 |
}
|
|
|
895 |
}
|
|
|
896 |
return false;
|
|
|
897 |
}
|
|
|
898 |
protected function toDelete($name){
|
|
|
899 |
$this->debug(3, "Scheduling file $name to delete on destruct.");
|
|
|
900 |
$this->toDeletes[] = $name;
|
|
|
901 |
}
|
|
|
902 |
protected function serveWebshot(){
|
|
|
903 |
$this->debug(3, "Starting serveWebshot");
|
|
|
904 |
$instr = "Please follow the instructions at http://code.google.com/p/timthumb/ to set your server up for taking website screenshots.";
|
|
|
905 |
if(! is_file(WEBSHOT_CUTYCAPT)){
|
|
|
906 |
return $this->error("CutyCapt is not installed. $instr");
|
|
|
907 |
}
|
|
|
908 |
if(! is_file(WEBSHOT_XVFB)){
|
|
|
909 |
return $this->Error("Xvfb is not installed. $instr");
|
|
|
910 |
}
|
|
|
911 |
$cuty = WEBSHOT_CUTYCAPT;
|
|
|
912 |
$xv = WEBSHOT_XVFB;
|
|
|
913 |
$screenX = WEBSHOT_SCREEN_X;
|
|
|
914 |
$screenY = WEBSHOT_SCREEN_Y;
|
|
|
915 |
$colDepth = WEBSHOT_COLOR_DEPTH;
|
|
|
916 |
$format = WEBSHOT_IMAGE_FORMAT;
|
|
|
917 |
$timeout = WEBSHOT_TIMEOUT * 1000;
|
|
|
918 |
$ua = WEBSHOT_USER_AGENT;
|
|
|
919 |
$jsOn = WEBSHOT_JAVASCRIPT_ON ? 'on' : 'off';
|
|
|
920 |
$javaOn = WEBSHOT_JAVA_ON ? 'on' : 'off';
|
|
|
921 |
$pluginsOn = WEBSHOT_PLUGINS_ON ? 'on' : 'off';
|
|
|
922 |
$proxy = WEBSHOT_PROXY ? ' --http-proxy=' . WEBSHOT_PROXY : '';
|
|
|
923 |
$tempfile = tempnam($this->cacheDirectory, 'timthumb_webshot');
|
|
|
924 |
$url = $this->src;
|
|
|
925 |
if(! preg_match('/^https?:\/\/[a-zA-Z0-9\.\-]+/i', $url)){
|
|
|
926 |
return $this->error("Invalid URL supplied.");
|
|
|
927 |
}
|
|
|
928 |
$url = preg_replace('/[^A-Za-z0-9\-\.\_\~:\/\?\#\[\]\@\!\$\&\'\(\)\*\+\,\;\=]+/', '', $url); //RFC 3986
|
|
|
929 |
//Very important we don't allow injection of shell commands here. URL is between quotes and we are only allowing through chars allowed by a the RFC
|
|
|
930 |
// which AFAIKT can't be used for shell injection.
|
|
|
931 |
if(WEBSHOT_XVFB_RUNNING){
|
|
|
932 |
putenv('DISPLAY=:100.0');
|
|
|
933 |
$command = "$cuty $proxy --max-wait=$timeout --user-agent=\"$ua\" --javascript=$jsOn --java=$javaOn --plugins=$pluginsOn --js-can-open-windows=off --url=\"$url\" --out-format=$format --out=$tempfile";
|
|
|
934 |
} else {
|
|
|
935 |
$command = "$xv --server-args=\"-screen 0, {$screenX}x{$screenY}x{$colDepth}\" $cuty $proxy --max-wait=$timeout --user-agent=\"$ua\" --javascript=$jsOn --java=$javaOn --plugins=$pluginsOn --js-can-open-windows=off --url=\"$url\" --out-format=$format --out=$tempfile";
|
|
|
936 |
}
|
|
|
937 |
$this->debug(3, "Executing command: $command");
|
|
|
938 |
$out = `$command`;
|
|
|
939 |
$this->debug(3, "Received output: $out");
|
|
|
940 |
if(! is_file($tempfile)){
|
|
|
941 |
$this->set404();
|
|
|
942 |
return $this->error("The command to create a thumbnail failed.");
|
|
|
943 |
}
|
|
|
944 |
$this->cropTop = true;
|
|
|
945 |
if($this->processImageAndWriteToCache($tempfile)){
|
|
|
946 |
$this->debug(3, "Image processed succesfully. Serving from cache");
|
|
|
947 |
return $this->serveCacheFile();
|
|
|
948 |
} else {
|
|
|
949 |
return false;
|
|
|
950 |
}
|
|
|
951 |
}
|
|
|
952 |
protected function serveExternalImage(){
|
|
|
953 |
if(! preg_match('/^https?:\/\/[a-zA-Z0-9\-\.]+/i', $this->src)){
|
|
|
954 |
$this->error("Invalid URL supplied.");
|
|
|
955 |
return false;
|
|
|
956 |
}
|
|
|
957 |
$tempfile = tempnam($this->cacheDirectory, 'timthumb');
|
|
|
958 |
$this->debug(3, "Fetching external image into temporary file $tempfile");
|
|
|
959 |
$this->toDelete($tempfile);
|
|
|
960 |
#fetch file here
|
|
|
961 |
if(! $this->getURL($this->src, $tempfile)){
|
|
|
962 |
@unlink($this->cachefile);
|
|
|
963 |
touch($this->cachefile);
|
|
|
964 |
$this->debug(3, "Error fetching URL: " . $this->lastURLError);
|
|
|
965 |
$this->error("Error reading the URL you specified from remote host." . $this->lastURLError);
|
|
|
966 |
return false;
|
|
|
967 |
}
|
|
|
968 |
|
|
|
969 |
$mimeType = $this->getMimeType($tempfile);
|
|
|
970 |
if(! preg_match("/^image\/(?:jpg|jpeg|gif|png)$/i", $mimeType)){
|
|
|
971 |
$this->debug(3, "Remote file has invalid mime type: $mimeType");
|
|
|
972 |
@unlink($this->cachefile);
|
|
|
973 |
touch($this->cachefile);
|
|
|
974 |
$this->error("The remote file is not a valid image.");
|
|
|
975 |
return false;
|
|
|
976 |
}
|
|
|
977 |
if($this->processImageAndWriteToCache($tempfile)){
|
|
|
978 |
$this->debug(3, "Image processed succesfully. Serving from cache");
|
|
|
979 |
return $this->serveCacheFile();
|
|
|
980 |
} else {
|
|
|
981 |
return false;
|
|
|
982 |
}
|
|
|
983 |
}
|
|
|
984 |
public static function curlWrite($h, $d){
|
|
|
985 |
fwrite(self::$curlFH, $d);
|
|
|
986 |
self::$curlDataWritten += strlen($d);
|
|
|
987 |
if(self::$curlDataWritten > MAX_FILE_SIZE){
|
|
|
988 |
return 0;
|
|
|
989 |
} else {
|
|
|
990 |
return strlen($d);
|
|
|
991 |
}
|
|
|
992 |
}
|
|
|
993 |
protected function serveCacheFile(){
|
|
|
994 |
$this->debug(3, "Serving {$this->cachefile}");
|
|
|
995 |
if(! is_file($this->cachefile)){
|
|
|
996 |
$this->error("serveCacheFile called in timthumb but we couldn't find the cached file.");
|
|
|
997 |
return false;
|
|
|
998 |
}
|
|
|
999 |
$fp = fopen($this->cachefile, 'rb');
|
|
|
1000 |
if(! $fp){ return $this->error("Could not open cachefile."); }
|
|
|
1001 |
fseek($fp, strlen($this->filePrependSecurityBlock), SEEK_SET);
|
|
|
1002 |
$imgType = fread($fp, 3);
|
|
|
1003 |
fseek($fp, 3, SEEK_CUR);
|
|
|
1004 |
if(ftell($fp) != strlen($this->filePrependSecurityBlock) + 6){
|
|
|
1005 |
@unlink($this->cachefile);
|
|
|
1006 |
return $this->error("The cached image file seems to be corrupt.");
|
|
|
1007 |
}
|
|
|
1008 |
$imageDataSize = filesize($this->cachefile) - (strlen($this->filePrependSecurityBlock) + 6);
|
|
|
1009 |
$this->sendImageHeaders($imgType, $imageDataSize);
|
|
|
1010 |
$bytesSent = @fpassthru($fp);
|
|
|
1011 |
fclose($fp);
|
|
|
1012 |
if($bytesSent > 0){
|
|
|
1013 |
return true;
|
|
|
1014 |
}
|
|
|
1015 |
$content = file_get_contents ($this->cachefile);
|
|
|
1016 |
if ($content != FALSE) {
|
|
|
1017 |
$content = substr($content, strlen($this->filePrependSecurityBlock) + 6);
|
|
|
1018 |
echo $content;
|
|
|
1019 |
$this->debug(3, "Served using file_get_contents and echo");
|
|
|
1020 |
return true;
|
|
|
1021 |
} else {
|
|
|
1022 |
$this->error("Cache file could not be loaded.");
|
|
|
1023 |
return false;
|
|
|
1024 |
}
|
|
|
1025 |
}
|
|
|
1026 |
protected function sendImageHeaders($mimeType, $dataSize){
|
|
|
1027 |
if(! preg_match('/^image\//i', $mimeType)){
|
|
|
1028 |
$mimeType = 'image/' . $mimeType;
|
|
|
1029 |
}
|
|
|
1030 |
if(strtolower($mimeType) == 'image/jpg'){
|
|
|
1031 |
$mimeType = 'image/jpeg';
|
|
|
1032 |
}
|
|
|
1033 |
$gmdate_expires = gmdate ('D, d M Y H:i:s', strtotime ('now +10 days')) . ' GMT';
|
|
|
1034 |
$gmdate_modified = gmdate ('D, d M Y H:i:s') . ' GMT';
|
|
|
1035 |
// send content headers then display image
|
|
|
1036 |
header ('Content-Type: ' . $mimeType);
|
|
|
1037 |
header ('Accept-Ranges: none'); //Changed this because we don't accept range requests
|
|
|
1038 |
header ('Last-Modified: ' . $gmdate_modified);
|
|
|
1039 |
header ('Content-Length: ' . $dataSize);
|
|
|
1040 |
if(BROWSER_CACHE_DISABLE){
|
|
|
1041 |
$this->debug(3, "Browser cache is disabled so setting non-caching headers.");
|
|
|
1042 |
header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
|
|
|
1043 |
header("Pragma: no-cache");
|
|
|
1044 |
header('Expires: ' . gmdate ('D, d M Y H:i:s', time()));
|
|
|
1045 |
} else {
|
|
|
1046 |
$this->debug(3, "Browser caching is enabled");
|
|
|
1047 |
header('Cache-Control: max-age=' . BROWSER_CACHE_MAX_AGE . ', must-revalidate');
|
|
|
1048 |
header('Expires: ' . $gmdate_expires);
|
|
|
1049 |
}
|
|
|
1050 |
return true;
|
|
|
1051 |
}
|
|
|
1052 |
protected function securityChecks(){
|
|
|
1053 |
}
|
|
|
1054 |
protected function param($property, $default = ''){
|
|
|
1055 |
if (isset ($_GET[$property])) {
|
|
|
1056 |
return $_GET[$property];
|
|
|
1057 |
} else {
|
|
|
1058 |
return $default;
|
|
|
1059 |
}
|
|
|
1060 |
}
|
|
|
1061 |
protected function openImage($mimeType, $src){
|
|
|
1062 |
switch ($mimeType) {
|
|
|
1063 |
case 'image/jpg': //This isn't a valid mime type so we should probably remove it
|
|
|
1064 |
case 'image/jpeg':
|
|
|
1065 |
$image = imagecreatefromjpeg ($src);
|
|
|
1066 |
break;
|
|
|
1067 |
|
|
|
1068 |
case 'image/png':
|
|
|
1069 |
$image = imagecreatefrompng ($src);
|
|
|
1070 |
break;
|
|
|
1071 |
|
|
|
1072 |
case 'image/gif':
|
|
|
1073 |
$image = imagecreatefromgif ($src);
|
|
|
1074 |
break;
|
|
|
1075 |
}
|
|
|
1076 |
|
|
|
1077 |
return $image;
|
|
|
1078 |
}
|
|
|
1079 |
protected function getIP(){
|
|
|
1080 |
$rem = @$_SERVER["REMOTE_ADDR"];
|
|
|
1081 |
$ff = @$_SERVER["HTTP_X_FORWARDED_FOR"];
|
|
|
1082 |
$ci = @$_SERVER["HTTP_CLIENT_IP"];
|
|
|
1083 |
if(preg_match('/^(?:192\.168|172\.16|10\.|127\.)/', $rem)){
|
|
|
1084 |
if($ff){ return $ff; }
|
|
|
1085 |
if($ci){ return $ci; }
|
|
|
1086 |
return $rem;
|
|
|
1087 |
} else {
|
|
|
1088 |
if($rem){ return $rem; }
|
|
|
1089 |
if($ff){ return $ff; }
|
|
|
1090 |
if($ci){ return $ci; }
|
|
|
1091 |
return "UNKNOWN";
|
|
|
1092 |
}
|
|
|
1093 |
}
|
|
|
1094 |
protected function debug($level, $msg){
|
|
|
1095 |
if(DEBUG_ON && $level <= DEBUG_LEVEL){
|
|
|
1096 |
$execTime = sprintf('%.6f', microtime(true) - $this->startTime);
|
|
|
1097 |
$tick = sprintf('%.6f', 0);
|
|
|
1098 |
if($this->lastBenchTime > 0){
|
|
|
1099 |
$tick = sprintf('%.6f', microtime(true) - $this->lastBenchTime);
|
|
|
1100 |
}
|
|
|
1101 |
$this->lastBenchTime = microtime(true);
|
|
|
1102 |
error_log("TimThumb Debug line " . __LINE__ . " [$execTime : $tick]: $msg");
|
|
|
1103 |
}
|
|
|
1104 |
}
|
|
|
1105 |
protected function sanityFail($msg){
|
|
|
1106 |
return $this->error("There is a problem in the timthumb code. Message: Please report this error at <a href='http://code.google.com/p/timthumb/issues/list'>timthumb's bug tracking page</a>: $msg");
|
|
|
1107 |
}
|
|
|
1108 |
protected function getMimeType($file){
|
|
|
1109 |
$info = getimagesize($file);
|
|
|
1110 |
if(is_array($info) && $info['mime']){
|
|
|
1111 |
return $info['mime'];
|
|
|
1112 |
}
|
|
|
1113 |
return '';
|
|
|
1114 |
}
|
|
|
1115 |
protected function setMemoryLimit(){
|
|
|
1116 |
$inimem = ini_get('memory_limit');
|
|
|
1117 |
$inibytes = timthumb::returnBytes($inimem);
|
|
|
1118 |
$ourbytes = timthumb::returnBytes(MEMORY_LIMIT);
|
|
|
1119 |
if($inibytes < $ourbytes){
|
|
|
1120 |
ini_set ('memory_limit', MEMORY_LIMIT);
|
|
|
1121 |
$this->debug(3, "Increased memory from $inimem to " . MEMORY_LIMIT);
|
|
|
1122 |
} else {
|
|
|
1123 |
$this->debug(3, "Not adjusting memory size because the current setting is " . $inimem . " and our size of " . MEMORY_LIMIT . " is smaller.");
|
|
|
1124 |
}
|
|
|
1125 |
}
|
|
|
1126 |
protected static function returnBytes($size_str){
|
|
|
1127 |
switch (substr ($size_str, -1))
|
|
|
1128 |
{
|
|
|
1129 |
case 'M': case 'm': return (int)$size_str * 1048576;
|
|
|
1130 |
case 'K': case 'k': return (int)$size_str * 1024;
|
|
|
1131 |
case 'G': case 'g': return (int)$size_str * 1073741824;
|
|
|
1132 |
default: return $size_str;
|
|
|
1133 |
}
|
|
|
1134 |
}
|
|
|
1135 |
protected function getURL($url, $tempfile){
|
|
|
1136 |
$this->lastURLError = false;
|
|
|
1137 |
$url = preg_replace('/ /', '%20', $url);
|
|
|
1138 |
if(function_exists('curl_init')){
|
|
|
1139 |
$this->debug(3, "Curl is installed so using it to fetch URL.");
|
|
|
1140 |
self::$curlFH = fopen($tempfile, 'w');
|
|
|
1141 |
if(! self::$curlFH){
|
|
|
1142 |
$this->error("Could not open $tempfile for writing.");
|
|
|
1143 |
return false;
|
|
|
1144 |
}
|
|
|
1145 |
self::$curlDataWritten = 0;
|
|
|
1146 |
$this->debug(3, "Fetching url with curl: $url");
|
|
|
1147 |
$curl = curl_init($url);
|
|
|
1148 |
curl_setopt ($curl, CURLOPT_TIMEOUT, CURL_TIMEOUT);
|
|
|
1149 |
curl_setopt ($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.122 Safari/534.30");
|
|
|
1150 |
curl_setopt ($curl, CURLOPT_RETURNTRANSFER, TRUE);
|
|
|
1151 |
curl_setopt ($curl, CURLOPT_HEADER, 0);
|
|
|
1152 |
curl_setopt ($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
|
|
|
1153 |
curl_setopt ($curl, CURLOPT_WRITEFUNCTION, 'timthumb::curlWrite');
|
|
|
1154 |
@curl_setopt ($curl, CURLOPT_FOLLOWLOCATION, true);
|
|
|
1155 |
@curl_setopt ($curl, CURLOPT_MAXREDIRS, 10);
|
|
|
1156 |
|
|
|
1157 |
$curlResult = curl_exec($curl);
|
|
|
1158 |
fclose(self::$curlFH);
|
|
|
1159 |
$httpStatus = curl_getinfo($curl, CURLINFO_HTTP_CODE);
|
|
|
1160 |
if($httpStatus == 404){
|
|
|
1161 |
$this->set404();
|
|
|
1162 |
}
|
|
|
1163 |
if($curlResult){
|
|
|
1164 |
curl_close($curl);
|
|
|
1165 |
return true;
|
|
|
1166 |
} else {
|
|
|
1167 |
$this->lastURLError = curl_error($curl);
|
|
|
1168 |
curl_close($curl);
|
|
|
1169 |
return false;
|
|
|
1170 |
}
|
|
|
1171 |
} else {
|
|
|
1172 |
$img = @file_get_contents ($url);
|
|
|
1173 |
if($img === false){
|
|
|
1174 |
$err = error_get_last();
|
|
|
1175 |
if(is_array($err) && $err['message']){
|
|
|
1176 |
$this->lastURLError = $err['message'];
|
|
|
1177 |
} else {
|
|
|
1178 |
$this->lastURLError = $err;
|
|
|
1179 |
}
|
|
|
1180 |
if(preg_match('/404/', $this->lastURLError)){
|
|
|
1181 |
$this->set404();
|
|
|
1182 |
}
|
|
|
1183 |
|
|
|
1184 |
return false;
|
|
|
1185 |
}
|
|
|
1186 |
if(! file_put_contents($tempfile, $img)){
|
|
|
1187 |
$this->error("Could not write to $tempfile.");
|
|
|
1188 |
return false;
|
|
|
1189 |
}
|
|
|
1190 |
return true;
|
|
|
1191 |
}
|
|
|
1192 |
|
|
|
1193 |
}
|
|
|
1194 |
protected function serveImg($file){
|
|
|
1195 |
$s = getimagesize($file);
|
|
|
1196 |
if(! ($s && $s['mime'])){
|
|
|
1197 |
return false;
|
|
|
1198 |
}
|
|
|
1199 |
header ('Content-Type: ' . $s['mime']);
|
|
|
1200 |
header ('Content-Length: ' . filesize($file) );
|
|
|
1201 |
header ('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
|
|
|
1202 |
header ("Pragma: no-cache");
|
|
|
1203 |
$bytes = @readfile($file);
|
|
|
1204 |
if($bytes > 0){
|
|
|
1205 |
return true;
|
|
|
1206 |
}
|
|
|
1207 |
$content = @file_get_contents ($file);
|
|
|
1208 |
if ($content != FALSE){
|
|
|
1209 |
echo $content;
|
|
|
1210 |
return true;
|
|
|
1211 |
}
|
|
|
1212 |
return false;
|
|
|
1213 |
|
|
|
1214 |
}
|
|
|
1215 |
protected function set404(){
|
|
|
1216 |
$this->is404 = true;
|
|
|
1217 |
}
|
|
|
1218 |
protected function is404(){
|
|
|
1219 |
return $this->is404;
|
|
|
1220 |
}
|
|
|
1221 |
}
|