Adding upstream version 2.12.1.upstream/2.12.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 269 insertions, 0 deletions

diff --git a/library/Icinga/Web/JavaScript.php b/library/Icinga/Web/JavaScript.php
new file mode 100644
index 0000000..1865136
--- /dev/null
+++ b/library/Icinga/Web/JavaScript.php
@@ -0,0 +1,269 @@
+<?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',
+        'js/icinga/behavior/copy-to-clipboard.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) {
+            $out .= Minifier::minify($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);
+    }
+}