Unhandled SecurityException in
DefaultFTPFileEntryParserFactory.createFileEntryParser when using applets
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Key: NET-286
URL: https://issues.apache.org/jira/browse/NET-286
Project: Commons Net
Issue Type: Bug
Reporter: Jory Geerts
Priority: Minor
When using a commons.net.ftp in a (signed) applet, we encountered an unhandles
_SecurityException_ in _DefaultFTPFileEntryParserFactory.createFileEntryParser_
in some cases.
If the applet was being hosted on my Windows Vista devmachine, connecting to
FTP servers was no issue.
However, as soon as we uploaded the applet to our webserver (CentOS), things
stopped working. After some debugging, we found that there was a
_SecurityException_ being thrown by the following code in
_DefaultFTPFileEntryParserFactory.createFileEntryParser_:
{{parserClass = Class.forName(key);}}
{{parser = (FTPFileEntryParser) parserClass.newInstance();}}
The toString() of the exception gave:
{{java.lang.SecurityException: class "UNIX Type: L8"'s signer information does
not match signer information of other classes in the same package}}
(Note: When using a different FTP server, the string was obviously different.)
The exception got caught by the generic catchblock at the bottom that doesn't
really do anything.
We managed to solve this by taking the code inside the catching of
_ClassNotFoundException_ and use that to catch the _SecurityException_.
I hope this is somewhat helpfull. :)
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