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-rw-r--r--library/Icinga/Web/JavaScript.php269
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diff --git a/library/Icinga/Web/JavaScript.php b/library/Icinga/Web/JavaScript.php
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+<?php
+/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Web;
+
+use Icinga\Application\Icinga;
+use Icinga\Application\Logger;
+use Icinga\Exception\Json\JsonDecodeException;
+use Icinga\Util\Json;
+use JShrink\Minifier;
+
+class JavaScript
+{
+ /** @var string */
+ const DEFINE_RE =
+ '/(?<!\.)define\(\s*([\'"][^\'"]*[\'"])?[,\s]*(\[[^]]*\])?[,\s]*((?>function\s*\([^)]*\)|[^=]*=>|\w+).*)/';
+
+ protected static $jsFiles = [
+ 'js/helpers.js',
+ 'js/icinga.js',
+ 'js/icinga/logger.js',
+ 'js/icinga/storage.js',
+ 'js/icinga/utils.js',
+ 'js/icinga/ui.js',
+ 'js/icinga/timer.js',
+ 'js/icinga/loader.js',
+ 'js/icinga/eventlistener.js',
+ 'js/icinga/events.js',
+ 'js/icinga/history.js',
+ 'js/icinga/module.js',
+ 'js/icinga/timezone.js',
+ 'js/icinga/behavior/application-state.js',
+ 'js/icinga/behavior/autofocus.js',
+ 'js/icinga/behavior/collapsible.js',
+ 'js/icinga/behavior/detach.js',
+ 'js/icinga/behavior/dropdown.js',
+ 'js/icinga/behavior/navigation.js',
+ 'js/icinga/behavior/form.js',
+ 'js/icinga/behavior/actiontable.js',
+ 'js/icinga/behavior/flyover.js',
+ 'js/icinga/behavior/filtereditor.js',
+ 'js/icinga/behavior/selectable.js',
+ 'js/icinga/behavior/modal.js',
+ 'js/icinga/behavior/input-enrichment.js',
+ 'js/icinga/behavior/datetime-picker.js'
+ ];
+
+ protected static $vendorFiles = [];
+
+ protected static $baseFiles = [
+ 'js/define.js'
+ ];
+
+ public static function sendMinified()
+ {
+ self::send(true);
+ }
+
+ /**
+ * Send the client side script code to the client
+ *
+ * Does not cache the client side script code if the HTTP header Cache-Control or Pragma is set to no-cache.
+ *
+ * @param bool $minified Whether to compress the client side script code
+ */
+ public static function send($minified = false)
+ {
+ header('Content-Type: application/javascript');
+ $basedir = Icinga::app()->getBootstrapDirectory();
+ $moduleManager = Icinga::app()->getModuleManager();
+
+ $files = [];
+ $js = $out = '';
+ $min = $minified ? '.min' : '';
+
+ // Prepare vendor file list
+ $vendorFiles = [];
+ foreach (self::$vendorFiles as $file) {
+ $filePath = $basedir . '/' . $file . $min . '.js';
+ $vendorFiles[] = $filePath;
+ $files[] = $filePath;
+ }
+
+ // Prepare base file list
+ $baseFiles = [];
+ foreach (self::$baseFiles as $file) {
+ $filePath = $basedir . '/' . $file;
+ $baseFiles[] = $filePath;
+ $files[] = $filePath;
+ }
+
+ // Prepare library file list
+ foreach (Icinga::app()->getLibraries() as $library) {
+ $files = array_merge($files, $library->getJsAssets());
+ }
+
+ // Prepare core file list
+ $coreFiles = [];
+ foreach (self::$jsFiles as $file) {
+ $filePath = $basedir . '/' . $file;
+ $coreFiles[] = $filePath;
+ $files[] = $filePath;
+ }
+
+ $moduleFiles = [];
+ foreach ($moduleManager->getLoadedModules() as $name => $module) {
+ if ($module->hasJs()) {
+ $jsDir = $module->getJsDir();
+ foreach ($module->getJsFiles() as $path) {
+ if (file_exists($path)) {
+ $moduleFiles[$name][$jsDir][] = $path;
+ $files[] = $path;
+ }
+ }
+ }
+ }
+
+ $request = Icinga::app()->getRequest();
+ $noCache = $request->getHeader('Cache-Control') === 'no-cache' || $request->getHeader('Pragma') === 'no-cache';
+
+ header('Cache-Control: public,no-cache,must-revalidate');
+
+ if (! $noCache && FileCache::etagMatchesFiles($files)) {
+ header("HTTP/1.1 304 Not Modified");
+ return;
+ } else {
+ $etag = FileCache::etagForFiles($files);
+ }
+
+ header('ETag: "' . $etag . '"');
+ header('Content-Type: application/javascript');
+
+ $cacheFile = 'icinga-' . $etag . $min . '.js';
+ $cache = FileCache::instance();
+ if (! $noCache && $cache->has($cacheFile)) {
+ $cache->send($cacheFile);
+ return;
+ }
+
+ // We do not minify vendor files
+ foreach ($vendorFiles as $file) {
+ $out .= ';' . ltrim(trim(file_get_contents($file)), ';') . "\n";
+ }
+
+ $baseJs = '';
+ foreach ($baseFiles as $file) {
+ $baseJs .= file_get_contents($file) . "\n\n\n";
+ }
+
+ // Library files need to be namespaced first before they can be included
+ foreach (Icinga::app()->getLibraries() as $library) {
+ foreach ($library->getJsAssets() as $file) {
+ $alreadyMinified = false;
+ if ($minified && file_exists(($minFile = substr($file, 0, -3) . '.min.js'))) {
+ $alreadyMinified = true;
+ $file = $minFile;
+ }
+
+ $content = self::optimizeDefine(
+ file_get_contents($file),
+ $file,
+ $library->getJsAssetPath(),
+ $library->getName()
+ );
+
+ if ($alreadyMinified) {
+ $out .= ';' . ltrim(trim($content), ';') . "\n";
+ } else {
+ $js .= $content . "\n\n\n";
+ }
+ }
+ }
+
+ foreach ($coreFiles as $file) {
+ $js .= file_get_contents($file) . "\n\n\n";
+ }
+
+ foreach ($moduleFiles as $name => $paths) {
+ foreach ($paths as $basePath => $filePaths) {
+ foreach ($filePaths as $file) {
+ $content = self::optimizeDefine(file_get_contents($file), $file, $basePath, $name);
+ if (substr($file, -7, 7) === '.min.js') {
+ $out .= ';' . ltrim(trim($content), ';') . "\n";
+ } else {
+ $js .= $content . "\n\n\n";
+ }
+ }
+ }
+ }
+
+ if ($minified) {
+ require_once 'JShrink/Minifier.php';
+ $out .= Minifier::minify($js, ['flaggedComments' => false]);
+ $baseOut = Minifier::minify($baseJs, ['flaggedComments' => false]);
+ $out = ';' . ltrim($baseOut, ';') . "\n" . $out;
+ } else {
+ $out = $baseJs . $out . $js;
+ }
+
+ $cache->store($cacheFile, $out);
+ echo $out;
+ }
+
+ /**
+ * Optimize define() calls in the given JS
+ *
+ * @param string $js
+ * @param string $filePath
+ * @param string $basePath
+ * @param string $packageName
+ *
+ * @return string
+ */
+ public static function optimizeDefine($js, $filePath, $basePath, $packageName)
+ {
+ if (! preg_match(self::DEFINE_RE, $js, $match) || strpos($js, 'define.amd') !== false) {
+ return $js;
+ }
+
+ try {
+ $assetName = $match[1] ? Json::decode($match[1]) : '';
+ if (! $assetName) {
+ $assetName = explode('.', basename($filePath))[0];
+ }
+
+ $assetName = join(DIRECTORY_SEPARATOR, array_filter([
+ $packageName,
+ ltrim(substr(dirname($filePath), strlen($basePath)), DIRECTORY_SEPARATOR),
+ $assetName
+ ]));
+
+ $assetName = Json::encode($assetName, JSON_UNESCAPED_SLASHES);
+ } catch (JsonDecodeException $_) {
+ $assetName = $match[1];
+ Logger::debug('Can\'t optimize name of "%s". Are single quotes used instead of double quotes?', $filePath);
+ }
+
+ try {
+ $dependencies = $match[2] ? Json::decode($match[2]) : [];
+ foreach ($dependencies as &$dependencyName) {
+ if ($dependencyName === 'exports') {
+ // exports is a special keyword and doesn't need optimization
+ continue;
+ }
+
+ if (preg_match('~^((?:\.\.?/)+)*(.*)~', $dependencyName, $natch)) {
+ $dependencyName = join(DIRECTORY_SEPARATOR, array_filter([
+ $packageName,
+ ltrim(substr(
+ realpath(join(DIRECTORY_SEPARATOR, [dirname($filePath), $natch[1]])),
+ strlen(realpath($basePath))
+ ), DIRECTORY_SEPARATOR),
+ $natch[2]
+ ]));
+ }
+ }
+
+ $dependencies = Json::encode($dependencies, JSON_UNESCAPED_SLASHES);
+ } catch (JsonDecodeException $_) {
+ $dependencies = $match[2];
+ Logger::debug(
+ 'Can\'t optimize dependencies of "%s". Are single quotes used instead of double quotes?',
+ $filePath
+ );
+ }
+
+ return str_replace($match[0], sprintf("define(%s, %s, %s", $assetName, $dependencies, $match[3]), $js);
+ }
+}