| /* |
| * Copyright (c) 2013, 2015, 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. |
| * |
| * 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8029800 |
| * @summary String.toLowerCase()/toUpperCase is generally dangerous, check it is not used in langtools |
| * @modules jdk.jdeps/com.sun.tools.classfile |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| import javax.tools.*; |
| import com.sun.tools.classfile.*; |
| import com.sun.tools.classfile.ConstantPool.CONSTANT_Methodref_info; |
| |
| public class NoStringToLower { |
| public static void main(String... args) throws Exception { |
| NoStringToLower c = new NoStringToLower(); |
| if (c.run(args)) |
| return; |
| |
| if (is_jtreg()) |
| throw new Exception(c.errors + " errors occurred"); |
| else |
| System.exit(1); |
| } |
| |
| static boolean is_jtreg() { |
| return (System.getProperty("test.src") != null); |
| } |
| |
| /** |
| * Main entry point. |
| */ |
| boolean run(String... args) throws Exception { |
| JavaCompiler c = ToolProvider.getSystemJavaCompiler(); |
| try (JavaFileManager fm = c.getStandardFileManager(null, null, null)) { |
| JavaFileManager.Location javacLoc = findJavacLocation(fm); |
| String[] pkgs = { |
| "javax.annotation.processing", |
| "javax.lang.model", |
| "javax.tools", |
| "com.sun.source", |
| "com.sun.tools.classfile", |
| "com.sun.tools.doclet", |
| "com.sun.tools.doclint", |
| "com.sun.tools.javac", |
| "com.sun.tools.javadoc", |
| "com.sun.tools.javah", |
| "com.sun.tools.javap", |
| "com.sun.tools.jdeps", |
| "com.sun.tools.sjavac" |
| }; |
| for (String pkg: pkgs) { |
| for (JavaFileObject fo: fm.list(javacLoc, |
| pkg, EnumSet.of(JavaFileObject.Kind.CLASS), true)) { |
| scan(fo); |
| } |
| } |
| |
| return (errors == 0); |
| } |
| } |
| |
| // depending on how the test is run, javac may be on bootclasspath or classpath |
| JavaFileManager.Location findJavacLocation(JavaFileManager fm) { |
| JavaFileManager.Location[] locns = |
| { StandardLocation.PLATFORM_CLASS_PATH, StandardLocation.CLASS_PATH }; |
| try { |
| for (JavaFileManager.Location l: locns) { |
| JavaFileObject fo = fm.getJavaFileForInput(l, |
| "com.sun.tools.javac.Main", JavaFileObject.Kind.CLASS); |
| if (fo != null) |
| return l; |
| } |
| } catch (IOException e) { |
| throw new Error(e); |
| } |
| throw new IllegalStateException("Cannot find javac"); |
| } |
| |
| /** |
| * Verify there are no references to String.toLowerCase() in a class file. |
| */ |
| void scan(JavaFileObject fo) throws IOException { |
| InputStream in = fo.openInputStream(); |
| try { |
| ClassFile cf = ClassFile.read(in); |
| for (ConstantPool.CPInfo cpinfo: cf.constant_pool.entries()) { |
| if (cpinfo.getTag() == ConstantPool.CONSTANT_Methodref) { |
| CONSTANT_Methodref_info ref = (CONSTANT_Methodref_info) cpinfo; |
| String methodDesc = ref.getClassInfo().getName() + "." + ref.getNameAndTypeInfo().getName() + ":" + ref.getNameAndTypeInfo().getType(); |
| |
| if ("java/lang/String.toLowerCase:()Ljava/lang/String;".equals(methodDesc)) { |
| error("found reference to String.toLowerCase() in: " + fo.getName()); |
| } |
| if ("java/lang/String.toUpperCase:()Ljava/lang/String;".equals(methodDesc)) { |
| error("found reference to String.toLowerCase() in: " + fo.getName()); |
| } |
| } |
| } |
| } catch (ConstantPoolException ignore) { |
| } finally { |
| in.close(); |
| } |
| } |
| |
| /** |
| * Report an error. |
| */ |
| void error(String msg) { |
| System.err.println("Error: " + msg); |
| errors++; |
| } |
| |
| int errors; |
| } |