mirror of
https://github.com/sorenpeter/timeline.git
synced 2025-12-15 19:07:01 +00:00
211 lines
7.7 KiB
PHP
211 lines
7.7 KiB
PHP
<?php
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/*
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Simplified version of http://github.com/jamiebicknell/Thumb:
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EXIF, bw and sharpening features removed
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*/
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define('THUMB_CACHE', 'thucache/'); // Path to cache directory (must be writeable)
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define('THUMB_CACHE_AGE', 86400); // Duration of cached files in seconds
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define('THUMB_BROWSER_CACHE', true); // Browser cache true or false
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define('JPEG_QUALITY', 90); // Quality of generated JPEGs (0 - 100; 100 being best)
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$src = isset($_GET['src']) ? $_GET['src'] : false;
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$size = isset($_GET['size']) ? str_replace(array('<', 'x'), '', $_GET['size']) != '' ? $_GET['size'] : 100 : 100;
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$crop = isset($_GET['crop']) ? max(0, min(1, $_GET['crop'])) : 1;
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$trim = isset($_GET['trim']) ? max(0, min(1, $_GET['trim'])) : 0;
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$zoom = isset($_GET['zoom']) ? max(0, min(1, $_GET['zoom'])) : 0;
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$align = isset($_GET['align']) ? $_GET['align'] : false;
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$sharpen = isset($_GET['sharpen']) ? max(0, min(100, $_GET['sharpen'])) : 0;
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$gray = isset($_GET['gray']) ? max(0, min(1, $_GET['gray'])) : 0;
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$ignore = isset($_GET['ignore']) ? max(0, min(1, $_GET['ignore'])) : 0;
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$path = parse_url($src);
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if (isset($path['scheme'])) {
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$base = parse_url('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
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if (preg_replace('/^www\./i', '', $base['host']) == preg_replace('/^www\./i', '', $path['host'])) {
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$base = explode('/', preg_replace('/\/+/', '/', $base['path']));
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$path = explode('/', preg_replace('/\/+/', '/', $path['path']));
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$temp = $path;
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$part = count($base);
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foreach ($base as $k => $v) {
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if ($v == $path[$k]) {
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array_shift($temp);
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} else {
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if ($part - $k > 1) {
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$temp = array_pad($temp, 0 - (count($temp) + ($part - $k) - 1), '..');
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break;
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} else {
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$temp[0] = './' . $temp[0];
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}
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}
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}
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$src = implode('/', $temp);
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}
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}
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if (!extension_loaded('gd')) {
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die('GD extension is not installed');
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}
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if (!is_writable(THUMB_CACHE)) {
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die('Cache not writable');
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}
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if (isset($path['scheme']) || !file_exists($src)) {
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die('File cannot be found');
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}
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if (!in_array(strtolower(substr(strrchr($src, '.'), 1)), array('gif', 'jpg', 'jpeg', 'png'))) {
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die('File is not an image');
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}
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$file_salt = 'v1.0.5';
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$file_size = filesize($src);
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$file_time = filemtime($src);
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$file_date = gmdate('D, d M Y H:i:s T', $file_time);
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$file_type = strtolower(substr(strrchr($src, '.'), 1));
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$file_hash = md5($file_salt . ($src.$size.$crop.$trim.$zoom.$align.$sharpen.$gray.$ignore) . $file_time);
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$file_temp = THUMB_CACHE . $file_hash . '.img.txt';
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$file_name = basename(substr($src, 0, strrpos($src, '.')) . strtolower(strrchr($src, '.')));
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if (!file_exists(THUMB_CACHE . 'index.html')) {
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touch(THUMB_CACHE . 'index.html');
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}
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if (($fp = fopen(THUMB_CACHE . 'index.html', 'r')) !== false) {
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if (flock($fp, LOCK_EX)) {
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if (time() - THUMB_CACHE_AGE > filemtime(THUMB_CACHE . 'index.html')) {
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$files = glob(THUMB_CACHE . '*.img.txt');
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if (is_array($files) && count($files) > 0) {
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foreach ($files as $file) {
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if (time() - THUMB_CACHE_AGE > filemtime($file)) {
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unlink($file);
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}
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}
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}
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touch(THUMB_CACHE . 'index.html');
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}
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flock($fp, LOCK_UN);
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}
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fclose($fp);
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}
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if (THUMB_BROWSER_CACHE && (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) || isset($_SERVER['HTTP_IF_NONE_MATCH']))) {
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if ($_SERVER['HTTP_IF_MODIFIED_SINCE'] == $file_date && $_SERVER['HTTP_IF_NONE_MATCH'] == $file_hash) {
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header($_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified');
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die();
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}
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}
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if (!file_exists($file_temp)) {
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list($w0, $h0, $type) = getimagesize($src);
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$data = file_get_contents($src);
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if ($ignore && $type == 1) {
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if (preg_match('/\x00\x21\xF9\x04.{4}\x00(\x2C|\x21)/s', $data)) {
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header('Content-Type: image/gif');
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header('Content-Length: ' . $file_size);
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header('Content-Disposition: inline; filename="' . $file_name . '"');
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header('Last-Modified: ' . $file_date);
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header('ETag: ' . $file_hash);
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header('Accept-Ranges: none');
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if (THUMB_BROWSER_CACHE) {
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header('Cache-Control: max-age=604800, must-revalidate');
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header('Expires: ' . gmdate('D, d M Y H:i:s T', strtotime('+7 days')));
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} else {
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header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
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header('Expires: ' . gmdate('D, d M Y H:i:s T'));
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header('Pragma: no-cache');
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}
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die($data);
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}
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}
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$oi = imagecreatefromstring($data);
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list($w,$h) = explode('x', str_replace('<', '', $size) . 'x');
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$w = ($w != '') ? floor(max(8, min(1500, $w))) : '';
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$h = ($h != '') ? floor(max(8, min(1500, $h))) : '';
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if (strstr($size, '<')) {
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$h = $w;
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$crop = 0;
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$trim = 1;
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} elseif (!strstr($size, 'x')) {
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$h = $w;
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} elseif ($w == '' || $h == '') {
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$w = ($w == '') ? ($w0 * $h) / $h0 : $w;
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$h = ($h == '') ? ($h0 * $w) / $w0 : $h;
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$crop = 0;
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$trim = 1;
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}
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$trim_w = ($trim) ? 1 : ($w == '') ? 1 : 0;
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$trim_h = ($trim) ? 1 : ($h == '') ? 1 : 0;
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if ($crop) {
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$w1 = (($w0 / $h0) > ($w / $h)) ? floor($w0 * $h / $h0) : $w;
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$h1 = (($w0 / $h0) < ($w / $h)) ? floor($h0 * $w / $w0) : $h;
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if (!$zoom) {
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if ($h0 < $h || $w0 < $w) {
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$w1 = $w0;
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$h1 = $h0;
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}
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}
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} else {
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$w1 = (($w0 / $h0) < ($w / $h)) ? floor($w0 * $h / $h0) : floor($w);
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$h1 = (($w0 / $h0) > ($w / $h)) ? floor($h0 * $w / $w0) : floor($h);
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$w = floor($w);
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$h = floor($h);
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if (!$zoom) {
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if ($h0 < $h && $w0 < $w) {
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$w1 = $w0;
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$h1 = $h0;
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}
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}
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}
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$w = ($trim_w) ? (($w0 / $h0) > ($w / $h)) ? min($w, $w1) : $w1 : $w;
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$h = ($trim_h) ? (($w0 / $h0) < ($w / $h)) ? min($h, $h1) : $h1 : $h;
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$x = strpos($align, 'l') !== false ? 0 : (strpos($align, 'r') !== false ? $w - $w1 : ($w - $w1) / 2);
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$y = strpos($align, 't') !== false ? 0 : (strpos($align, 'b') !== false ? $h - $h1 : ($h - $h1) / 2);
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$im = imagecreatetruecolor($w, $h);
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$bg = imagecolorallocate($im, 255, 255, 255);
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imagefill($im, 0, 0, $bg);
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switch ($type) {
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case 1:
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imagecopyresampled($im, $oi, $x, $y, 0, 0, $w1, $h1, $w0, $h0);
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imagegif($im, $file_temp);
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break;
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case 2:
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imagecopyresampled($im, $oi, $x, $y, 0, 0, $w1, $h1, $w0, $h0);
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imagejpeg($im, $file_temp, JPEG_QUALITY);
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break;
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case 3:
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imagefill($im, 0, 0, imagecolorallocatealpha($im, 0, 0, 0, 127));
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imagesavealpha($im, true);
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imagealphablending($im, false);
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imagecopyresampled($im, $oi, $x, $y, 0, 0, $w1, $h1, $w0, $h0);
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imagepng($im, $file_temp);
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break;
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}
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imagedestroy($im);
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imagedestroy($oi);
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}
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header('Content-Type: image/' . $file_type);
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header('Content-Length: ' . filesize($file_temp));
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header('Content-Disposition: inline; filename="' . $file_name . '"');
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header('Last-Modified: ' . $file_date);
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header('ETag: ' . $file_hash);
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header('Accept-Ranges: none');
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if (THUMB_BROWSER_CACHE) {
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header('Cache-Control: max-age=604800, must-revalidate');
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header('Expires: ' . gmdate('D, d M Y H:i:s T', strtotime('+7 days')));
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} else {
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header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
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header('Expires: ' . gmdate('D, d M Y H:i:s T'));
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header('Pragma: no-cache');
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}
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readfile($file_temp);
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