Hi!
While investigating https://issues.apache.org/jira/browse/HARMONY-2955 JIRA
i've found an interesting thing:
The testcase below produces different result for 3 VMs (below as well) and
all 3 are rather weird:
RI:
- need access to some security properties when calling
System.setSecurityManager for the first time - seems violation of the spec
to me.
- but if uncomment the line #5 (and thus some static initializers will be
done) then the output is just "Security manager was successfully set."
DRLVM:
- checking java.security.SecurityPermission getProperty.package.access and
althought it's not granted - successfully sets security manager (probably by
catching exception inside VM kernel classes)
IBM VME:
- checking the same java.security.SecurityPermission
getProperty.package.access and crashes as it's not granted
From these 3 results DRLVM seems to me the closest to what is expected.
I'm not sure what kinds of JIRAs should be open in this case:
I could suggest opening at least 2 JIRAs:
1) "non-bug diff" as this code should silently work
2) against IBM VME - as it crashes while checking additional properties
Not sure what to do with DRLVM as it's behaviour generally correct.
Thoughts?
Regards,
Mikhail
-------- output --------------
RI:
Checking (java.security.SecurityPermission
getProperty.networkaddress.cache.ttl)...
Exception in thread "main" java.lang.ExceptionInInitializerError
at java.lang.System.setSecurityManager0(System.java:275)
at java.lang.System.setSecurityManager(System.java:244)
at Test.main(Test.java:6)
Caused by: java.lang.SecurityException: (java.security.SecurityPermission
getProperty.networkaddress.cache.ttl) is not granted.
at MySecurityManager.checkPermission(Test.java:14)
at java.security.Security.getProperty(Security.java:724)
at sun.net.InetAddressCachePolicy$1.run(InetAddressCachePolicy.java
:81)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.InetAddressCachePolicy.<clinit>(
InetAddressCachePolicy.java:77)
... 3 more
DRLVM:
Checking (java.security.SecurityPermission getProperty.package.access)...
Security manager was successfully set.
Checking (java.lang.RuntimePermission getProtectionDomain)...
IBM VME (crashes):
Checking (java.security.SecurityPermission getProperty.package.access)...
Exception in thread "main" java.lang.SecurityException: (
java.security.SecurityPermission getProperty.package.access) is not granted.
at MySecurityManager.checkPermission(Test.java:14)
at java.lang.SecurityManager.checkSecurityAccess(
SecurityManager.java:422)
at java.security.Security.getProperty(Security.java:360)
at org.apache.harmony.luni.util.PriviAction.run(PriviAction.java
:131)
at java.security.AccessController.doPrivileged(AccessController.java
:179)
at java.lang.SecurityManager.checkPackageProperty(
SecurityManager.java:333)
at java.lang.SecurityManager.checkPackageAccess(SecurityManager.java
:34)
at com.ibm.oti.vm.URLSystemClassLoader.loadClass(
URLSystemClassLoader.java:54)
at java.lang.ClassLoader.loadClass(ClassLoader.java:620)
at com.ibm.oti.vm.URLSystemClassLoader.loadClass(
URLSystemClassLoader.java:60)
at java.lang.ClassLoader.loadClass(ClassLoader.java:594)
at MySecurityManager.checkPermission(Test.java:13)
at java.lang.SecurityManager.checkSecurityAccess(
SecurityManager.java:422)
at java.security.Security.getProperty(Security.java:360)
at org.apache.harmony.luni.util.PriviAction.run(PriviAction.java
:131)
at java.security.AccessController.doPrivileged(AccessController.java
:179)
at java.lang.SecurityManager.checkPackageProperty(
SecurityManager.java:333)
at java.lang.SecurityManager.checkPackageAccess(SecurityManager.java
:34)
at com.ibm.oti.vm.URLSystemClassLoader.loadClass(
URLSystemClassLoader.java:54)
at java.lang.ClassLoader.loadClass(ClassLoader.java:594)
at Test.main(Test.java:7)
Checking (java.lang.RuntimePermission modifyThreadGroup)...
-------- Test.java -----------
import java.security.Permission;
public class Test {
public static void main(String[] args) throws Exception {
//System.setSecurityManager(null);
System.setSecurityManager(new MySecurityManager());
System.out.println("Security manager was successfully set.");
}
}
class MySecurityManager extends SecurityManager {
public void checkPermission(Permission perm) {
System.out.println("Checking " + perm + "...");
throw new SecurityException(perm.toString() + " is not granted.");
}
}
