Signed jar won't work...

[Tristan Van Poucke]

I signed the jar for my applet using jarsigner.
the applet is made for browsing your harddisk in order to upload some pictures so I needed a signed applet.
Anyway I signed the applet and still i get this error:

java.security.AccessControlException: access denied (java.io.FilePermission C:\Documents and Settings\josy\Mijn documenten read)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkRead(Unknown Source)
at java.io.File.isFile(Unknown Source)
at sun.awt.shell.ShellFolder.isFile(Unknown Source)
at com.arashpayan.filetree.FileTree.populateSubTree(FileTree.java:236)
at com.arashpayan.filetree.FileTree.initRoot(FileTree.java:151)
at com.arashpayan.filetree.FileTree.initComponents(FileTree.java:113)
at com.arashpayan.filetree.FileTree.<init>(FileTree.java:53)
at UploaderPack.Uploader.init(Uploader.java:81)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

AnyOne?

[Ulf Dittmer]

I haven't done it myself, but I've heard people say running code as privileged code helps. See the last paragraph of "Signing an applet" in http://faq.javaranch.com/java/HowCanAnAppletReadFilesOnTheLocalFileSystem
[ July 01, 2008: Message edited by: Ulf Dittmer ]

[Norm Radder]

I just ran an applet from a jar that I signed and it was able to read a file from my C: drive. It wasn't able to read the file before I signed it.

Here are the commands I used to sign the jar file:

@REM Sign AppletReader.jar to new jar file
@rem commandline used to create keystore:
@echo keytool -genkey -alias signApplet -keypass NormsKey -keystore NormsKS -storepass NormsStore
jarsigner -keystore NormsKS -signedjar sAppletReader.jar AppletReader.jar signApplet

Here's the code in the applet:

  
      java.security.AccessController.doPrivileged (new java.security.PrivilegedAction (){
         public Object run (){
            try{
               java.io.BufferedReader reader = new java.io.BufferedReader(
                        new java.io.FileReader (fileName)  );
            String input="";
               while ((input = reader.readLine()) != null ){
                     messages += input + "\n" ;
               }
            }catch (java.io.IOException e) {
               messages = "File i/O error : "+e.getMessage ();
               e.printStackTrace ();
            }
            return "Success";
         }
      });