Have a look at https://github.com/eclipse/eclipse.platform  
ant/org.eclipse.ant.launching/src/org/eclipse/ant/internal/launching/launchConfigurations/RemoteAntRuntimeProcess.java

That might not be the exact file but it will be somewhere around there. 

Alex 

Sent from my iPhone 📱

> On 1 Nov 2020, at 22:39, Homer, Tony <tony.ho...@intel.com> wrote:
> 
> 
> I wrote a plugin which provides an org.eclipse.ant.core.antProperties 
> extension.  The property it provides shows up in the Ant properties editor 
> along with the eclipse-provided ant properties.  However, when I execute an 
> ant target (via the Eclipse ant view) that references the property, the 
> property is not accessible.  Similarly, the eclipse-provided ant property, 
> eclipse.home, is not accessible.  If I define a property (ant.foo with value 
> “foo”) in the Ant properties page, it is accessible.  Ant built-ins (such as 
> ant.home) are accessible. 
>  
> Here is an example antfile + output from Eclipse console that demonstrates 
> this.
>  
> ant.xml contents:
> <project>
>     <target name="echo-ant.tmpdir">
>                 <echo message="ant.foo: ${ant.foo}" />
>                 <echo message="ant.home: ${ant.home}" />
>                 <echo message="eclipse.home: ${eclipse.home}" />
>                 <echo message="ant.tmpdir: ${ant.tmpdir}" />
>     </target>
> </project>
>  
> console output:
> Buildfile: 
> /home/tony/spinny_mount/development/test/runtime-test/AntTest/ant.xml
> echo-ant.tmpdir:
>      [echo] ant.foo: foo
>      [echo] ant.home: 
> /home/tony/spinny_mount/development/iss/workspace_nda_clean/.metadata/.plugins/org.eclipse.pde.core/.bundle_pool/plugins/org.apache.ant_1.10.8.v20200515-1239
>      [echo] eclipse.home: ${eclipse.home}
>      [echo] ant.tmpdir: ${ant.tmpdir}
> BUILD SUCCESSFUL
> Total time: 200 milliseconds
>  
> Is this a bug or am I attempting to use the feature incorrectly?
>  
> Additional background for context: I am attempting to mitigate CVE-2020-11979 
> in an Eclipse product.  Please refer to the advisory from Apache Ant:
> https://lists.apache.org/thread.html/rc3c8ef9724b5b1e171529b47f4b35cb7920edfb6e917fa21eb6c64ea%40%3Cdev.ant.apache.org%3E
> Eclipse currently includes Ant 1.10.8 which is affected by CVE-2020-11979, 
> but even if updated to use 1.10.9, the advisory recommends that the directory 
> be explicitly created with the correct permissions and the ant.tmpdir 
> property be set so that ant will use it.
> My mitigation plan is to create a temp folder with the recommended 
> permissions, then set the ant.tmpdir property using the 
> org.eclipse.ant.core.antProperties extension point.  I wrote a plugin which 
> successfully sets ant.tmpdir to the desired value, but when I attempt to 
> access the value in an antfile in eclipse, exercising the relevant target 
> shows that the property is not available to ant.
>  
> Is there some way other than via the org.eclipse.ant.core.antProperties 
> extension point to have Eclipse pass the ant.tmpdir property to Ant?
>  
> FWIW, I tried to step further into the code to see how the set of arguments 
> is passed to Ant, but I couldn’t find my way to the class which performs the 
> actual Ant invocation.  It appears that there may be an extra class loader 
> which loads Ant and some of the inner eclipse ant wrapping implementation, 
> maybe for security reasons?  In any case, I haven’t been able to puzzle out 
> how the set of properties in the Ant property editor get passed to Ant.  
> Because of this, I can’t tell if this is a bug or user error.  If someone can 
> guide me in how to troubleshoot more effectively or identify the right place 
> to look and how to configure my Eclipse environment so that I can set a 
> breakpoint there, I’d be interested in delving further.
>  
> Thanks!
> Tony Homer
>  
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