Paul Nicolucci created MYFACES-3536:
---------------------------------------

             Summary: AccessControlException occurs when using a 
CustomExceptionHandler to navigate to a page using the NavigationHandler
                 Key: MYFACES-3536
                 URL: https://issues.apache.org/jira/browse/MYFACES-3536
             Project: MyFaces Core
          Issue Type: Bug
          Components: JSR-314
    Affects Versions: 2.0.13
         Environment: WebSphere Application Server Version 8.0 with Java2 
Security enabled
            Reporter: Paul Nicolucci


After fixing MYFACES-3530 I enabled Java2 Security in Websphere Application 
Server Version 8.0 and found the following issue related to using a custom 
Exception Handler to handle a ViewExpiredException.  

When we Navigate to a page from the customer Exception Handler in the 
application the following exception occurs:

java.security.AccessControlException: Access denied 
org.osgi.framework.AdminPermission (id=65) resolve,resource)
        at 
java.security.AccessController.checkPermission(AccessController.java:108)
        at java.lang.SecurityManager.checkPermission(SecurityManager.java:544)
        at 
com.ibm.ws.security.core.SecurityManager.checkPermission(SecurityManager.java:208)
        at 
org.eclipse.osgi.framework.internal.core.BundleResourceHandler.checkAuthorization(BundleResourceHandler.java:289)
        at 
org.eclipse.osgi.framework.internal.core.BundleResourceHandler.parseURL(BundleResourceHandler.java:128)
        at java.net.URL.<init>(URL.java:608)
        at java.net.URL.<init>(URL.java:476)
        at java.net.URL.<init>(URL.java:425)
        at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown 
Source)
        at org.apache.xerces.impl.XMLEntityManager.startEntity(Unknown Source)
        at org.apache.xerces.impl.XMLEntityManager.startDTDEntity(Unknown 
Source)
        at org.apache.xerces.impl.XMLDTDScannerImpl.setInputSource(Unknown 
Source)
        at 
org.apache.xerces.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(Unknown 
Source)
        at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown 
Source)
        at org.apache.xerces.jaxp.SAXParserImpl.parse(Unknown Source)
        at javax.xml.parsers.SAXParser.parse(Unknown Source)
        at 
org.apache.myfaces.view.facelets.compiler.SAXCompiler.doCompileViewMetadata(SAXCompiler.java:712)
        at 
org.apache.myfaces.view.facelets.compiler.Compiler.compileViewMetadata(Compiler.java:126)
        at 
org.apache.myfaces.view.facelets.impl.DefaultFaceletFactory._createViewMetadataFacelet(DefaultFaceletFactory.java:311)
        at 
org.apache.myfaces.view.facelets.impl.DefaultFaceletFactory.getViewMetadataFacelet(DefaultFaceletFactory.java:394)
        at 
org.apache.myfaces.view.facelets.impl.DefaultFaceletFactory.getViewMetadataFacelet(DefaultFaceletFactory.java:376)
        at 
org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage._getViewMetadataFacelet(FaceletViewDeclarationLanguage.java:1940)
        at 
org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.access$000(FaceletViewDeclarationLanguage.java:129)
        at 
org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage$FaceletViewMetadata.createMetadataView(FaceletViewDeclarationLanguage.java:2049)
        at 
org.apache.myfaces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:174)
        at 
com.ibm.ws.jsf.fat.test.PM62254.ViewExpiredExceptionExceptionHandler.handle(ViewExpiredExceptionExceptionHandler.java:45)
  -> Application code

I've attached Exception.txt showing the full stack trace for reference.  The 
exception looks to come from: 

org.apache.myfaces.view.facelets.compiler.SAXCompiler.doCompileViewMetadata(SAXCompiler.java:712).

I've attached a suggested patch that wraps the offending code in an 
AccessController.doPrivileged block.  I had to make the following changes to 
completely fix the problem:

1) Make the ViewMetadataHandler and SAXParser local variables final so they can 
be used within the doPrivileged block.

2) I had to create a secondary InputStream object "finalInputStream which is 
just a copy of the local "is" InputStream but is marked final so it can also be 
used within the doPrivileged block.

3) I also added a nested try/catch block that will catch the 
PrivilegedActionException and catches the SAXException/IOException and keeps 
the behavior we had before ( throwing IOException, throwing new 
FaceletException for the SAXException ). I had to do this since the 
doPrivileged block wraps the exceptions from parser.parse in a 
PrivilegedActionException.

4) The new code is only used if System.getSecurityManager() != null so there 
should be no performance ramifications if security is not enabled.

Please review and let me know if you are ok with my patch.


Thanks!



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