On Dec 20, 2007, at 11:49 AM, Scott Kovatch wrote:
Bundled applications that were built on certain earlier versions of
the OS had a flaw in the stub that keeps them from executing in
Leopard. The fix is to re-bundle the application in Leopard.
Is there any way some versioning or timestamp could be determined
from the JavaApplicationStub to help in determining if problems like
this might apply. I tried writing a application verifier a while back
that tried to address a similar problem that had come up some time
back. I ended up trying to make a best guess on dates to determine if
the bug might apply for a given JavaApplicationStub
private static final Date MODERN_STUB = new Date(102,3,8);
Date stubdate = new Date(execfile.lastModified());
if (stubdate.before(MODERN_STUB)) {
out.println("apparent native executable " + execfile + "
appears out of date");
errors |= OLD_EXECUTABLE;
If some version API could be added to the stubs or some timestamp
embedded it might eliminate some guess work on similar problems?
Speaking of embedding. I'm curious, for applications that change the
executable with a shell script or otherwise I had code that tried to
guess if a file was the correct stub based on a magic check.
private static final int STUB_MAGIC = 0xfeedface;
I recently starting using this code somewhere else and the magic
wasn't matching. Actually now showing the java class file magic?
private static final int STUB_MAGIC = 0xfeedface;
private static final int JAVA_MAGIC = 0xcafebabe; // Seeing file
witht this? Hopefully not something I did
checked for, now, with something like...
if (magic == STUB_MAGIC || magic == JAVA_MAGIC) {
Why I check for it I'm not entirely sure but I do and had to change
the check this last week. Is using the same thing as java class files
really a good idea? There is some value I think that should be set in
the plist that would match a renamed JavaApplicationStub but I
apparently stumbled on this and started checking it as insurance or
something.
Assuming, for CAFEBABE that I didn't in fact clobber it myself
somehow but I'd guess not.
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