diff options
| -rwxr-xr-x | src/main/javassist/util/proxy/SecurityActions.java | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/main/javassist/util/proxy/SecurityActions.java b/src/main/javassist/util/proxy/SecurityActions.java index ca0de912..ce0b5fa6 100755 --- a/src/main/javassist/util/proxy/SecurityActions.java +++ b/src/main/javassist/util/proxy/SecurityActions.java @@ -162,4 +162,33 @@ class SecurityActions { } } } + + static Object getSunMiscUnsafeAnonymously() throws ClassNotFoundException + { + try { + return AccessController.doPrivileged( + new PrivilegedExceptionAction<Object>() { public Object run() throws + ClassNotFoundException, NoSuchFieldException, SecurityException, + IllegalArgumentException, IllegalAccessException { + Class<?> unsafe = Class.forName("sun.misc.Unsafe"); + Field theUnsafe = unsafe.getDeclaredField("theUnsafe"); + theUnsafe.setAccessible(true); + Object usf = theUnsafe.get(null); + theUnsafe.setAccessible(false); + return usf; + } + }); + } + catch (PrivilegedActionException e) { + if (e.getCause() instanceof ClassNotFoundException) + throw (ClassNotFoundException) e.getCause(); + if (e.getCause() instanceof NoSuchFieldException) + throw new ClassNotFoundException("No such instance.", e.getCause()); + if (e.getCause() instanceof IllegalAccessException + || e.getCause() instanceof IllegalAccessException + || e.getCause() instanceof SecurityException) + throw new ClassNotFoundException("Security denied access.", e.getCause()); + throw new RuntimeException(e.getCause()); + } + } } |