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Lucee fails to start if java.io.tempDir doesn't exist

Description

There are actually two separate issues here. The first is that when java.io.tmpDir points to a folder which has not been created, Lucee ignores it instead of creating it.

The second issue is that when this happens, Lucee falls back to a second attempt at finding a temp directory by calling

which is INVALID as the JDK’s javadocs state, the prefix must be at least 3 characters.

Even though this code is in a try/catch, it only catches IOExceptions, but the error that is thrown is an IllegalArgumentException which does not get caught.

 

So, Lucee needs to

  • Fix the invalid call of File.createTempFile() to use a prefix of at least 3 characters

  • Consider creating missing temp directories, if permissions allow.

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Zac Spitzer 19 April 2023 at 13:44

?

Pothys - MitrahSoft 19 April 2023 at 11:51
Edited

I checked this ticket and confirmed the issue with lucee version 5.4.0.47-SNAPSHOT. When starting Lucee, it didn't create tempdir if "java.io.tmpdir" doesn't exists

So the second attempt, it calls the "createTempFile("a", "a")", which throws a prefix string too short error.


Stacktrace:

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Created 13 April 2023 at 16:21
Updated 1 June 2023 at 13:22