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/*
* Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package javafx.css.converter;
import javafx.application.Application;
import javafx.css.ParsedValue;
import javafx.css.StyleConverter;
import javafx.scene.text.Font;
import com.sun.javafx.logging.PlatformLogger;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.AccessController;
import java.security.CodeSource;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.security.ProtectionDomain;
/**
* Converts a parsed value representing URL to a URL string that is
* resolved relative to the location of the stylesheet.
* The input value is in the form: {@code url("")}.
*
* @since 9
*/
public final class URLConverter extends StyleConverter {
// lazy, thread-safe instatiation
private static class Holder {
static final URLConverter INSTANCE = new URLConverter();
static final SequenceConverter SEQUENCE_INSTANCE = new SequenceConverter();
}
public static StyleConverter getInstance() {
return Holder.INSTANCE;
}
private URLConverter() {
super();
}
@Override
public String convert(ParsedValue value, Font font) {
String url = null;
ParsedValue[] values = value.getValue();
String resource = values.length > 0 ? StringConverter.getInstance().convert(values[0], font) : null;
if (resource != null && resource.trim().isEmpty() == false) {
if (resource.startsWith("url(")) {
resource = com.sun.javafx.util.Utils.stripQuotes(resource.substring(4, resource.length() - 1));
} else {
resource = com.sun.javafx.util.Utils.stripQuotes(resource);
}
String stylesheetURL = values.length > 1 && values[1] != null ? (String)values[1].getValue() : null;
URL resolvedURL = resolve(stylesheetURL, resource);
if (resolvedURL != null) url = resolvedURL.toExternalForm();
}
return url;
}
// package for testing
URL resolve(String stylesheetUrl, String resource) {
final String resourcePath = (resource != null) ? resource.trim() : null;
if (resourcePath == null || resourcePath.isEmpty()) return null;
try {
// Note: the same code (pretty much) also appears in StyleManager
// if stylesheetUri is null, then we're dealing with an in-line style.
// If there is no scheme part, then the url is interpreted as being relative to the application's class-loader.
URI resourceUri = new URI(resourcePath);
if (resourceUri.isAbsolute()) {
return resourceUri.toURL();
}
URL rtJarUrl = resolveRuntimeImport(resourceUri);
if (rtJarUrl != null) {
return rtJarUrl;
}
final String path = resourceUri.getPath();
if (path.startsWith("/")) {
final ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
// FIXME: JIGSAW -- use Class.getResource if resource is in a module
return contextClassLoader.getResource(path.substring(1));
}
final String stylesheetPath = (stylesheetUrl != null) ? stylesheetUrl.trim() : null;
if (stylesheetPath != null && stylesheetPath.isEmpty() == false) {
URI stylesheetUri = new URI(stylesheetPath);
if (stylesheetUri.isOpaque() == false) {
URI resolved = stylesheetUri.resolve(resourceUri);
return resolved.toURL();
} else {
// stylesheet URI is something like jar:file:
URL url = stylesheetUri.toURL();
return new URL(url, resourceUri.getPath());
}
}
// URL doesn't have scheme or stylesheetUrl is null
final ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
// FIXME: JIGSAW -- use Class.getResource if resource is in a module
return contextClassLoader.getResource(path);
} catch (final MalformedURLException|URISyntaxException e) {
PlatformLogger cssLogger = com.sun.javafx.util.Logging.getCSSLogger();
if (cssLogger.isLoggable(PlatformLogger.Level.WARNING)) {
cssLogger.warning(e.getLocalizedMessage());
}
return null;
}
}
//
// Resolve a path from an @import that implies jfxrt.jar,
// e.g., @import "com/sun/javafx/scene/control/skin/modena/modena.css".
//
// See also StyleSheet#loadStylesheet(String)
//
private URL resolveRuntimeImport(final URI resourceUri) {
// FIXME: JIGSAW -- this method needs to be rewritten for Jigsaw.
// There is no jfxrt.jar any more, and resource encapsulation will
// prevent it from being resolved anyway.
final String path = resourceUri.getPath();
final String resourcePath = path.startsWith("/") ? path.substring(1) : path;
if ((resourcePath.startsWith("com/sun/javafx/scene/control/skin/modena/") ||
resourcePath.startsWith("com/sun/javafx/scene/control/skin/caspian/")) &&
(resourcePath.endsWith(".css") || resourcePath.endsWith(".bss"))) {
System.err.println("WARNING: resolveRuntimeImport cannot resolve: " + resourcePath);
final SecurityManager sm = System.getSecurityManager();
if (sm == null) {
// If the SecurityManager is not null, then just look up the resource on the class-path.
// If there is a SecurityManager, the URLClassPath getResource call will return null,
// so fall through and create a URL from the code-source URI
final ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
// FIXME: JIGSAW -- use Class.getResource if resource is in a module
final URL resolved = contextClassLoader.getResource(resourcePath);
return resolved;
}
// check whether the path is file from our runtime jar
try {
final URL rtJarURL = AccessController.doPrivileged((PrivilegedExceptionAction) () -> {
// getProtectionDomain either throws a SecurityException or returns a non-null value
final ProtectionDomain protectionDomain = Application.class.getProtectionDomain();
// If we're running with a SecurityManager, then the ProtectionDomain will have a CodeSource
final CodeSource codeSource = protectionDomain.getCodeSource();
// The CodeSource location will be our runtime jar
return codeSource.getLocation();
});
final URI rtJarURI = rtJarURL.toURI();
String scheme = rtJarURI.getScheme();
String rtJarPath = rtJarURI.getPath();
//
// Just because we're running with a SecurityManager doesn't mean the jfxrt jar path is
// a jar: URL. But the code in StyleManager wants it to be. So if we have
// file:/blah/lib/jfxrt.jar make it jar:file:/blah/lib/jfxrt.jar!/
//
// If the path doesn't end with .jar, then we are just dealing with a normal file: path
//
if ("file".equals(scheme) && rtJarPath.endsWith(".jar")) {
if ("file".equals(scheme)) {
scheme = "jar:file";
rtJarPath = rtJarPath.concat("!/");
}
}
rtJarPath = rtJarPath.concat(resourcePath);
final String rtJarUserInfo = rtJarURI.getUserInfo();
final String rtJarHost = rtJarURI.getHost();
final int rtJarPort = rtJarURI.getPort();
//
// Put together a new URI from the pieces of rtJarURI. We cannot use resolve here since
// the scheme and path may have been munged.
//
URI resolved = new URI(scheme, rtJarUserInfo, rtJarHost, rtJarPort, rtJarPath, null, null);
return resolved.toURL();
} catch (URISyntaxException | MalformedURLException | PrivilegedActionException ignored) {
// Allow this method to return null so the caller will try to further resolve the path.
// If nothing else, an error message will result when the converted URL is consumed.
}
}
return null;
}
@Override
public String toString() {
return "URLType";
}
public static final class SequenceConverter extends StyleConverter[], String[]> {
public static SequenceConverter getInstance() {
return Holder.SEQUENCE_INSTANCE;
}
private SequenceConverter() {
super();
}
@Override
public String[] convert(ParsedValue[], String[]> value, Font font) {
ParsedValue[] layers = value.getValue();
String[] urls = new String[layers.length];
for (int layer = 0; layer < layers.length; layer++) {
urls[layer] = URLConverter.getInstance().convert(layers[layer], font);
}
return urls;
}
@Override
public String toString() {
return "URLSeqType";
}
}
}
