-
Notifications
You must be signed in to change notification settings - Fork 604
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Prevent security manager in KernelBootstrap in Java 24+
- Loading branch information
Showing
2 changed files
with
112 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
108 changes: 108 additions & 0 deletions
108
dev/com.ibm.ws.kernel.boot.core/src/com/ibm/ws/kernel/boot/utils/JavaInfo.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2025 IBM Corporation and others. | ||
| * All rights reserved. This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Public License 2.0 | ||
| * which accompanies this distribution, and is available at | ||
| * http://www.eclipse.org/legal/epl-2.0/ | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| *******************************************************************************/ | ||
| package com.ibm.ws.kernel.boot.utils; | ||
|
|
||
| /** | ||
| * A class used for identifying properties of a JDK | ||
| */ | ||
| public class JavaInfo { | ||
| private static JavaInfo instance; | ||
|
|
||
| public static int JAVA_VERSION = majorVersion(); | ||
|
|
||
| private final int MAJOR; | ||
| private final int MINOR; | ||
| private final int MICRO; | ||
| private final int SERVICE_RELEASE; | ||
| private final int FIXPACK; | ||
|
|
||
| private JavaInfo() { | ||
| String version = System.getProperty("java.version"); | ||
| String[] versionElements = version.split("\\D"); // split on non-digits | ||
|
|
||
| // Pre-JDK 9 the java.version is 1.MAJOR.MINOR | ||
| // Post-JDK 9 the java.version is MAJOR.MINOR | ||
| int i = Integer.parseInt(versionElements[0]) == 1 ? 1 : 0; | ||
| MAJOR = Integer.parseInt(versionElements[i++]); | ||
|
|
||
| if (i < versionElements.length) | ||
| MINOR = Integer.parseInt(versionElements[i++]); | ||
| else | ||
| MINOR = 0; | ||
|
|
||
| if (i < versionElements.length) | ||
| MICRO = Integer.parseInt(versionElements[i]); | ||
| else | ||
| MICRO = 0; | ||
|
|
||
| // Parse service release | ||
| String buildInfo = System.getProperty("java.specification.version"); | ||
| int sr = 0; | ||
| int srloc = buildInfo.toLowerCase().indexOf("sr"); | ||
| if (srloc > (-1)) { | ||
| srloc += 2; | ||
| if (srloc < buildInfo.length()) { | ||
| int len = 0; | ||
| while ((srloc + len < buildInfo.length()) && Character.isDigit(buildInfo.charAt(srloc + len))) { | ||
| len++; | ||
| } | ||
| sr = Integer.parseInt(buildInfo.substring(srloc, srloc + len)); | ||
| } | ||
| } | ||
| SERVICE_RELEASE = sr; | ||
|
|
||
| // Parse fixpack | ||
| int fp = 0; | ||
| int fploc = buildInfo.toLowerCase().indexOf("fp"); | ||
| if (fploc > (-1)) { | ||
| fploc += 2; | ||
| if (fploc < buildInfo.length()) { | ||
| int len = 0; | ||
| while ((fploc + len < buildInfo.length()) && Character.isDigit(buildInfo.charAt(fploc + len))) { | ||
| len++; | ||
| } | ||
| fp = Integer.parseInt(buildInfo.substring(fploc, fploc + len)); | ||
| } | ||
| } | ||
| FIXPACK = fp; | ||
| } | ||
|
|
||
| private static JavaInfo instance() { | ||
| if (instance == null) | ||
| instance = new JavaInfo(); | ||
| return instance; | ||
| } | ||
|
|
||
| public static int majorVersion() { | ||
| return instance().MAJOR; | ||
| } | ||
|
|
||
| public static int minorVersion() { | ||
| return instance().MINOR; | ||
| } | ||
|
|
||
| public static int microVersion() { | ||
| return instance().MICRO; | ||
| } | ||
|
|
||
| public static int serviceRelease() { | ||
| return instance().SERVICE_RELEASE; | ||
| } | ||
|
|
||
| public static int fixpack() { | ||
| return instance().FIXPACK; | ||
| } | ||
|
|
||
| @Override | ||
| public String toString() { | ||
| return "major=" + MAJOR + ", minor=" + MINOR + ", micro=" + MICRO + ", service release=" + SERVICE_RELEASE | ||
| + ", fixpack=" + FIXPACK; | ||
| } | ||
| } |