🍒 11133 - Abort on IBMJ9's keytool (#11138)

* fix: Abort on IBMJ9's keytool

(cherry picked from commit 13e4501)

* fix: Abort on other Java 8 / IBMJ9 Java JDKs

(cherry picked from commit 68759d4)

* Update dd-java-agent/src/main/java/datadog/trace/bootstrap/AgentBootstrap.java

Co-authored-by: Stuart McCulloch <stuart.mcculloch@datadoghq.com>
(cherry picked from commit e840513)

* Update dd-java-agent/src/main/java/datadog/trace/bootstrap/AgentBootstrap.java

Co-authored-by: Stuart McCulloch <stuart.mcculloch@datadoghq.com>
(cherry picked from commit 1c331eb)

* fix: Missed some tools hotspot based OpenJDK 8

(cherry picked from commit 2368ed0)

---------

Co-authored-by: Stuart McCulloch <stuart.mcculloch@datadoghq.com>

Author: bric3

dd-java-agent/src/main/java/datadog/trace/bootstrap/AgentBootstrap.java

@@ -216,7 +216,7 @@ private static boolean alreadyInitialized() {
     return false;
   }
 
-  private static boolean isJdkTool() {
+  static boolean isJdkTool() {
     String moduleMain = SystemProperties.get("jdk.module.main");
     if (null != moduleMain && !moduleMain.isEmpty() && moduleMain.charAt(0) == 'j') {
       switch (moduleMain) {
@@ -253,6 +253,66 @@ private static boolean isJdkTool() {
           return true;
       }
     }
+    // Handles JDK 8 tools (IBM J9 and standard JDK 8 vendors)
+    // jdk.module.main is only set for JDK 9+ module-based tools (already handled above)
+    String command = SystemProperties.get("sun.java.command");
+    if (null != command && !command.isEmpty()) {
+      // substring on first space
+      int firstSpace = command.indexOf(' ');
+      String mainClass = firstSpace > 0 ? command.substring(0, firstSpace) : command;
+      switch (mainClass) {
+        // IBM J9 JDK 8 specific tool main classes
+        case "com.ibm.crypto.tools.KeyTool": // keytool
+        case "com.ibm.security.krb5.internal.tools.Kinit": // kinit
+        case "com.ibm.security.krb5.internal.tools.Klist": // klist
+        case "com.ibm.security.krb5.internal.tools.Ktab": // ktab
+        case "com.ibm.jvm.dtfjview.DTFJView": // jdmpview
+        case "com.ibm.gsk.ikeyman.ikeycmd": // ikeycmd
+        case "com.ibm.CosNaming.TransientNameServer": // tnameserv
+        case "com.ibm.idl.toJavaPortable.Compile": // idlj
+        // Standard JDK 8 tool main classes (shared by IBM J9 and Oracle/OpenJDK 8)
+        case "sun.tools.jar.Main": // jar
+        case "com.sun.tools.javac.Main": // javac
+        case "com.sun.tools.javadoc.Main": // javadoc
+        case "com.sun.tools.javap.Main": // javap
+        case "com.sun.tools.javah.Main": // javah
+        case "sun.security.tools.keytool.Main": // keytool (Oracle/OpenJDK 8)
+        case "sun.security.tools.jarsigner.Main": // jarsigner
+        case "sun.security.tools.policytool.PolicyTool": // policytool
+        case "com.sun.tools.example.debug.tty.TTY": // jdb
+        case "com.sun.tools.jdeps.Main": // jdeps
+        case "sun.rmi.rmic.Main": // rmic
+        case "sun.rmi.registry.RegistryImpl": // rmiregistry
+        case "sun.rmi.server.Activation": // rmid
+        case "com.sun.tools.extcheck.Main": // extcheck
+        case "sun.tools.serialver.SerialVer": // serialver
+        case "sun.tools.native2ascii.Main": // native2ascii
+        case "com.sun.tools.internal.ws.WsGen": // wsgen
+        case "com.sun.tools.internal.ws.WsImport": // wsimport
+        case "com.sun.tools.internal.xjc.Driver": // xjc
+        case "com.sun.tools.internal.jxc.SchemaGenerator": // schemagen
+        case "com.sun.tools.script.shell.Main": // jrunscript
+        case "sun.tools.jconsole.JConsole": // jconsole
+        case "sun.applet.Main": // appletviewer
+        case "com.sun.corba.se.impl.naming.cosnaming.TransientNameServer": // tnameserv
+        // (Oracle/OpenJDK 8)
+        case "com.sun.tools.corba.se.idl.toJavaPortable.Compile": // idlj (Oracle/OpenJDK 8)
+        case "com.sun.corba.se.impl.activation.ORBD": // orbd
+        case "com.sun.corba.se.impl.activation.ServerTool": // servertool
+        case "sun.tools.jps.Jps": // jps
+        case "sun.tools.jstack.JStack": // jstack
+        case "sun.tools.jmap.JMap": // jmap
+        case "sun.tools.jinfo.JInfo": // jinfo
+        case "com.sun.tools.hat.Main": // jhat
+        case "sun.tools.jstat.Jstat": // jstat
+        case "sun.tools.jstatd.Jstatd": // jstatd
+        case "sun.tools.jcmd.JCmd": // jcmd
+        case "jdk.jfr.internal.tool.Main": // jfr, backported to OpenJDK 8 in 8u262 (JEP 328
+        // backport, July 2020)
+        case "sun.jvm.hotspot.jdi.SADebugServer": // jsadebugd
+          return true;
+      }
+    }
     return false;
   }