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test/tools/javac/NoStringToLower.java@2eb010b6cb22 (annotated)

test/tools/javac/NoStringToLower.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 2414

17ce329d7bd0

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 8029800
aoqi@0	27	* @summary String.toLowerCase()/toUpperCase is generally dangerous, check it is not used in langtools
aoqi@0	28	*/
aoqi@0	29
aoqi@0	30	import java.io.*;
aoqi@0	31	import java.util.*;
aoqi@0	32	import javax.tools.*;
aoqi@0	33	import com.sun.tools.classfile.*;
aoqi@0	34	import com.sun.tools.classfile.ConstantPool.CONSTANT_Methodref_info;
aoqi@0	35
aoqi@0	36	public class NoStringToLower {
aoqi@0	37	public static void main(String... args) throws Exception {
aoqi@0	38	NoStringToLower c = new NoStringToLower();
aoqi@0	39	if (c.run(args))
aoqi@0	40	return;
aoqi@0	41
aoqi@0	42	if (is_jtreg())
aoqi@0	43	throw new Exception(c.errors + " errors occurred");
aoqi@0	44	else
aoqi@0	45	System.exit(1);
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	static boolean is_jtreg() {
aoqi@0	49	return (System.getProperty("test.src") != null);
aoqi@0	50	}
aoqi@0	51
aoqi@0	52	/**
aoqi@0	53	* Main entry point.
aoqi@0	54	*/
aoqi@0	55	boolean run(String... args) throws Exception {
aoqi@0	56	JavaCompiler c = ToolProvider.getSystemJavaCompiler();
aoqi@0	57	JavaFileManager fm = c.getStandardFileManager(null, null, null);
aoqi@0	58	JavaFileManager.Location javacLoc = findJavacLocation(fm);
aoqi@0	59	String[] pkgs = {
aoqi@0	60	"javax.annotation.processing",
aoqi@0	61	"javax.lang.model",
aoqi@0	62	"javax.tools",
aoqi@0	63	"com.sun.source",
aoqi@0	64	"com.sun.tools.classfile",
aoqi@0	65	"com.sun.tools.doclet",
aoqi@0	66	"com.sun.tools.doclint",
aoqi@0	67	"com.sun.tools.javac",
aoqi@0	68	"com.sun.tools.javadoc",
aoqi@0	69	"com.sun.tools.javah",
aoqi@0	70	"com.sun.tools.javap",
aoqi@0	71	"com.sun.tools.jdeps",
aoqi@0	72	"com.sun.tools.sjavac"
aoqi@0	73	};
aoqi@0	74	for (String pkg: pkgs) {
aoqi@0	75	for (JavaFileObject fo: fm.list(javacLoc,
aoqi@0	76	pkg, EnumSet.of(JavaFileObject.Kind.CLASS), true)) {
aoqi@0	77	scan(fo);
aoqi@0	78	}
aoqi@0	79	}
aoqi@0	80
aoqi@0	81	return (errors == 0);
aoqi@0	82	}
aoqi@0	83
aoqi@0	84	// depending on how the test is run, javac may be on bootclasspath or classpath
aoqi@0	85	JavaFileManager.Location findJavacLocation(JavaFileManager fm) {
aoqi@0	86	JavaFileManager.Location[] locns =
aoqi@0	87	{ StandardLocation.PLATFORM_CLASS_PATH, StandardLocation.CLASS_PATH };
aoqi@0	88	try {
aoqi@0	89	for (JavaFileManager.Location l: locns) {
aoqi@0	90	JavaFileObject fo = fm.getJavaFileForInput(l,
aoqi@0	91	"com.sun.tools.javac.Main", JavaFileObject.Kind.CLASS);
aoqi@0	92	if (fo != null)
aoqi@0	93	return l;
aoqi@0	94	}
aoqi@0	95	} catch (IOException e) {
aoqi@0	96	throw new Error(e);
aoqi@0	97	}
aoqi@0	98	throw new IllegalStateException("Cannot find javac");
aoqi@0	99	}
aoqi@0	100
aoqi@0	101	/**
aoqi@0	102	* Verify there are no references to String.toLowerCase() in a class file.
aoqi@0	103	*/
aoqi@0	104	void scan(JavaFileObject fo) throws IOException {
aoqi@0	105	InputStream in = fo.openInputStream();
aoqi@0	106	try {
aoqi@0	107	ClassFile cf = ClassFile.read(in);
aoqi@0	108	for (ConstantPool.CPInfo cpinfo: cf.constant_pool.entries()) {
aoqi@0	109	if (cpinfo.getTag() == ConstantPool.CONSTANT_Methodref) {
aoqi@0	110	CONSTANT_Methodref_info ref = (CONSTANT_Methodref_info) cpinfo;
aoqi@0	111	String methodDesc = ref.getClassInfo().getName() + "." + ref.getNameAndTypeInfo().getName() + ":" + ref.getNameAndTypeInfo().getType();
aoqi@0	112
aoqi@0	113	if ("java/lang/String.toLowerCase:()Ljava/lang/String;".equals(methodDesc)) {
aoqi@0	114	error("found reference to String.toLowerCase() in: " + fo.getName());
aoqi@0	115	}
aoqi@0	116	if ("java/lang/String.toUpperCase:()Ljava/lang/String;".equals(methodDesc)) {
aoqi@0	117	error("found reference to String.toLowerCase() in: " + fo.getName());
aoqi@0	118	}
aoqi@0	119	}
aoqi@0	120	}
aoqi@0	121	} catch (ConstantPoolException ignore) {
aoqi@0	122	} finally {
aoqi@0	123	in.close();
aoqi@0	124	}
aoqi@0	125	}
aoqi@0	126
aoqi@0	127	/**
aoqi@0	128	* Report an error.
aoqi@0	129	*/
aoqi@0	130	void error(String msg) {
aoqi@0	131	System.err.println("Error: " + msg);
aoqi@0	132	errors++;
aoqi@0	133	}
aoqi@0	134
aoqi@0	135	int errors;
aoqi@0	136	}