1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/rt/emul/compact/src/main/java/java/lang/invoke/ProxyClassesDumper.java Sat Aug 09 11:11:13 2014 +0200
1.3 @@ -0,0 +1,147 @@
1.4 +/*
1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +package java.lang.invoke;
1.29 +
1.30 +import sun.util.logging.PlatformLogger;
1.31 +
1.32 +import java.io.FilePermission;
1.33 +import java.nio.file.Files;
1.34 +import java.nio.file.InvalidPathException;
1.35 +import java.nio.file.Path;
1.36 +import java.nio.file.Paths;
1.37 +import java.security.AccessController;
1.38 +import java.security.PrivilegedAction;
1.39 +import java.util.Objects;
1.40 +import java.util.concurrent.atomic.AtomicBoolean;
1.41 +
1.42 +/**
1.43 + * Helper class used by InnerClassLambdaMetafactory to log generated classes
1.44 + *
1.45 + * @implNote
1.46 + * <p> Because this class is called by LambdaMetafactory, make use
1.47 + * of lambda lead to recursive calls cause stack overflow.
1.48 + */
1.49 +final class ProxyClassesDumper {
1.50 + private static final char[] HEX = {
1.51 + '0', '1', '2', '3', '4', '5', '6', '7',
1.52 + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
1.53 + };
1.54 + private static final char[] BAD_CHARS = {
1.55 + '\\', ':', '*', '?', '"', '<', '>', '|'
1.56 + };
1.57 + private static final String[] REPLACEMENT = {
1.58 + "%5C", "%3A", "%2A", "%3F", "%22", "%3C", "%3E", "%7C"
1.59 + };
1.60 +
1.61 + private final Path dumpDir;
1.62 +
1.63 + public static ProxyClassesDumper getInstance(String path) {
1.64 + if (null == path) {
1.65 + return null;
1.66 + }
1.67 + try {
1.68 + path = path.trim();
1.69 + final Path dir = Paths.get(path.length() == 0 ? "." : path);
1.70 + AccessController.doPrivileged(new PrivilegedAction<Void>() {
1.71 + @Override
1.72 + public Void run() {
1.73 + validateDumpDir(dir);
1.74 + return null;
1.75 + }
1.76 + }, null, new FilePermission("<<ALL FILES>>", "read, write"));
1.77 + return new ProxyClassesDumper(dir);
1.78 + } catch (InvalidPathException ex) {
1.79 + PlatformLogger.getLogger(ProxyClassesDumper.class.getName())
1.80 + .warning("Path " + path + " is not valid - dumping disabled", ex);
1.81 + } catch (IllegalArgumentException iae) {
1.82 + PlatformLogger.getLogger(ProxyClassesDumper.class.getName())
1.83 + .warning(iae.getMessage() + " - dumping disabled");
1.84 + }
1.85 + return null;
1.86 + }
1.87 +
1.88 + private ProxyClassesDumper(Path path) {
1.89 + dumpDir = Objects.requireNonNull(path);
1.90 + }
1.91 +
1.92 + private static void validateDumpDir(Path path) {
1.93 + if (!Files.exists(path)) {
1.94 + throw new IllegalArgumentException("Directory " + path + " does not exist");
1.95 + } else if (!Files.isDirectory(path)) {
1.96 + throw new IllegalArgumentException("Path " + path + " is not a directory");
1.97 + } else if (!Files.isWritable(path)) {
1.98 + throw new IllegalArgumentException("Directory " + path + " is not writable");
1.99 + }
1.100 + }
1.101 +
1.102 + public static String encodeForFilename(String className) {
1.103 + final int len = className.length();
1.104 + StringBuilder sb = new StringBuilder(len);
1.105 +
1.106 + for (int i = 0; i < len; i++) {
1.107 + char c = className.charAt(i);
1.108 + // control characters
1.109 + if (c <= 31) {
1.110 + sb.append('%');
1.111 + sb.append(HEX[c >> 4 & 0x0F]);
1.112 + sb.append(HEX[c & 0x0F]);
1.113 + } else {
1.114 + int j = 0;
1.115 + for (; j < BAD_CHARS.length; j++) {
1.116 + if (c == BAD_CHARS[j]) {
1.117 + sb.append(REPLACEMENT[j]);
1.118 + break;
1.119 + }
1.120 + }
1.121 + if (j >= BAD_CHARS.length) {
1.122 + sb.append(c);
1.123 + }
1.124 + }
1.125 + }
1.126 +
1.127 + return sb.toString();
1.128 + }
1.129 +
1.130 + public void dumpClass(String className, final byte[] classBytes) {
1.131 + Path file;
1.132 + try {
1.133 + file = dumpDir.resolve(encodeForFilename(className) + ".class");
1.134 + } catch (InvalidPathException ex) {
1.135 + PlatformLogger.getLogger(ProxyClassesDumper.class.getName())
1.136 + .warning("Invalid path for class " + className);
1.137 + return;
1.138 + }
1.139 +
1.140 + try {
1.141 + Path dir = file.getParent();
1.142 + Files.createDirectories(dir);
1.143 + Files.write(file, classBytes);
1.144 + } catch (Exception ignore) {
1.145 + PlatformLogger.getLogger(ProxyClassesDumper.class.getName())
1.146 + .warning("Exception writing to path at " + file.toString());
1.147 + // simply don't care if this operation failed
1.148 + }
1.149 + }
1.150 +}