1 files changed, 127 insertions, 0 deletions
diff --git a/admin/survey/minify/static/gen.php b/admin/survey/minify/static/gen.php
new file mode 100644
index 0000000..2bc40af
--- /dev/null
+++ b/admin/survey/minify/static/gen.php
@@ -0,0 +1,127 @@
+<?php
+
+// allows putting /static anywhere as long as you put a boostrap.php in it
+if (is_file(__DIR__ . '/bootstrap.php')) {
+    $bootstrap_file = __DIR__ . '/bootstrap.php';
+} else {
+    $bootstrap_file = __DIR__ . '/../bootstrap.php';
+}
+
+$send_400 = function($content = 'Bad URL') {
+    http_response_code(400);
+    die($content);
+};
+
+$send_301 = function($url) {
+    http_response_code(301);
+    header("Cache-Control: max-age=31536000");
+    header("Location: $url");
+    exit;
+};
+
+$app = (require $bootstrap_file);
+/* @var \Minify\App $app */
+
+if (!$app->config->enableStatic) {
+    die('Minify static serving is not enabled. Set $min_enableStatic = true; in config.php');
+}
+
+require __DIR__ . '/lib.php';
+
+if (!is_writable(__DIR__)) {
+    http_response_code(500);
+    die('Directory is not writable.');
+}
+
+// parse request
+// SCRIPT_NAME = /path/to/minify/static/gen.php
+// REQUEST_URI = /path/to/minify/static/1467084520/b=path/to/minify&f=quick-test.js
+
+// "/path/to/minify/static"
+$root_uri = dirname($_SERVER['SCRIPT_NAME']);
+
+// "/1467084520/b=path/to/minify&f=quick-test.js"
+$uri = substr($_SERVER['REQUEST_URI'], strlen($root_uri));
+
+if (!preg_match('~^/(\d+)/(.*)$~', $uri, $m)) {
+    http_response_code(404);
+    die('File not found');
+}
+
+// "1467084520"
+$requested_cache_dir = $m[1];
+
+// "b=path/to/minify&f=quick-test.js"
+$query = $m[2];
+
+// we basically want canonical querystrings because we make a file for each one.
+// manual parsing is the only way to do this. The MinApp controller will validate
+// these parameters anyway.
+$get_params = array();
+foreach (explode('&', $query) as $piece) {
+    if (false === strpos($piece, '=')) {
+        $send_400();
+    }
+
+    list($key, $value) = explode('=', $piece, 2);
+    if (!in_array($key, array('f', 'g', 'b', 'z'))) {
+        $send_400();
+    }
+
+    if (isset($get_params[$key])) {
+        // already used
+        $send_400();
+    }
+
+    if ($key === 'z' && !preg_match('~^\.(css|js)$~', $value, $m)) {
+        $send_400();
+    }
+
+    $get_params[$key] = urldecode($value);
+}
+
+$cache_time = Minify\StaticService\get_cache_time();
+if (!$cache_time) {
+    http_response_code(500);
+    die('Directory is not writable.');
+}
+
+$app->env = new Minify_Env(array(
+    'get' => $get_params,
+));
+$ctrl = $app->controller;
+$options = $app->serveOptions;
+$sources = $ctrl->createConfiguration($options)->getSources();
+if (!$sources) {
+    http_response_code(404);
+    die('File not found');
+}
+if ($sources[0]->getId() === 'id::missingFile') {
+    $send_400("Bad URL: missing file");
+}
+
+// we need URL to end in appropriate extension
+$type = $sources[0]->getContentType();
+$ext = ($type === Minify::TYPE_JS) ? '.js' : '.css';
+if (substr($query, - strlen($ext)) !== $ext) {
+    $send_301("$root_uri/$cache_time/{$query}&z=$ext");
+}
+
+// fix the cache dir in the URL
+if ($cache_time !== $requested_cache_dir) {
+    $send_301("$root_uri/$cache_time/$query");
+}
+
+$content = $app->minify->combine($sources);
+
+// save and send file
+$file = __DIR__ . "/$cache_time/$query";
+if (!is_dir(dirname($file))) {
+    mkdir(dirname($file), 0777, true);
+}
+
+file_put_contents($file, $content);
+
+header("Content-Type: $type;charset=utf-8");
+header("Cache-Control: max-age=31536000");
+echo $content;