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59d4c97ffc
With slightly altered URLs, Minify can cache files so they're served directly from the filesystem instead of through PHP. A simple library helps create URLs and clearing the cache. See `static/README.md` for details.
128 lines
3.2 KiB
PHP
128 lines
3.2 KiB
PHP
<?php
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// allows putting /static anywhere as long as you put a boostrap.php in it
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if (is_file(__DIR__ . '/bootstrap.php')) {
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$bootstrap_file = __DIR__ . '/bootstrap.php';
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} else {
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$bootstrap_file = __DIR__ . '/../bootstrap.php';
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}
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$send_400 = function($content = 'Bad URL') {
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http_response_code(400);
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die($content);
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};
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$send_301 = function($url) {
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http_response_code(301);
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header("Cache-Control: max-age=31536000");
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header("Location: $url");
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exit;
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};
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$app = (require $bootstrap_file);
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/* @var \Minify\App $app */
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if (!$app->config->enableStatic) {
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die('Minify static serving is not enabled. Set $min_enableStatic = true; in config.php');
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}
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require __DIR__ . '/lib.php';
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if (!is_writable(__DIR__)) {
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http_response_code(500);
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die('Directory is not writable.');
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}
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// parse request
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// SCRIPT_NAME = /path/to/minify/static/gen.php
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// REQUEST_URI = /path/to/minify/static/1467084520/b=path/to/minify&f=quick-test.js
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// "/path/to/minify/static"
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$root_uri = dirname($_SERVER['SCRIPT_NAME']);
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// "/1467084520/b=path/to/minify&f=quick-test.js"
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$uri = substr($_SERVER['REQUEST_URI'], strlen($root_uri));
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if (!preg_match('~^/(\d+)/(.*)$~', $uri, $m)) {
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http_response_code(404);
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die('File not found');
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}
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// "1467084520"
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$requested_cache_dir = $m[1];
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// "b=path/to/minify&f=quick-test.js"
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$query = $m[2];
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// we basically want canonical querystrings because we make a file for each one.
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// manual parsing is the only way to do this. The MinApp controller will validate
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// these parameters anyway.
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$get_params = array();
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foreach (explode('&', $query) as $piece) {
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if (false === strpos($piece, '=')) {
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$send_400();
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}
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list($key, $value) = explode('=', $piece, 2);
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if (!in_array($key, array('f', 'g', 'b', 'z'))) {
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$send_400();
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}
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if (isset($get_params[$key])) {
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// already used
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$send_400();
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}
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if ($key === 'z' && !preg_match('~^\.(css|js)$~', $value, $m)) {
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$send_400();
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}
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$get_params[$key] = urldecode($value);
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}
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$cache_time = Minify\StaticService\get_cache_time();
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if (!$cache_time) {
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http_response_code(500);
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die('Directory is not writable.');
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}
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$app->env = new Minify_Env(array(
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'get' => $get_params,
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));
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$ctrl = $app->controller;
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$options = $app->serveOptions;
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$sources = $ctrl->createConfiguration($options)->getSources();
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if (!$sources) {
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http_response_code(404);
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die('File not found');
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}
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if ($sources[0]->getId() === 'id::missingFile') {
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$send_400("Bad URL: missing file");
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}
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// we need URL to end in appropriate extension
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$type = $sources[0]->getContentType();
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$ext = ($type === Minify::TYPE_JS) ? '.js' : '.css';
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if (substr($query, - strlen($ext)) !== $ext) {
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$send_301("$root_uri/$cache_time/{$query}&z=$ext");
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}
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// fix the cache dir in the URL
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if ($cache_time !== $requested_cache_dir) {
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$send_301("$root_uri/$cache_time/$query");
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}
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$content = $app->minify->combine($sources);
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// save and send file
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$file = __DIR__ . "/$cache_time/$query";
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if (!is_dir(dirname($file))) {
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mkdir(dirname($file), 0777, true);
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}
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file_put_contents($file, $content);
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header("Content-Type: $type;charset=utf-8");
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header("Cache-Control: max-age=31536000");
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echo $content;
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