Re: fihier log

Yann-Aël LE BORGNE wrote:

> ok thanks Olivier. Sorry not to have waited a little bit I was being 
> impatient :-)
> Actually i've changed quite a few things on my controller and now, 
> despite it works on my computer, it doesn't work on the server. I 
> wonder if there wouldn't be authorization problems that would may 
> cause my program to crash.
> To check that out, can you please confirm this way of doing :
> * I redirect the error and output stream to the log file (by using 
> System.setErr and Sytem.setOut)

shouldn't be a problem

> * I uses three threads. A main one, not marked as daemon, extending 
> the controller class, that launches two others, marked as 
> daemon, dealing with motors and sensors respectively. Anything wrong 
> with that (generally speaking) ?

might be a problem... I am not sure daemon threads may cause some 
security issues. I am running the contest controllers with the following 
java.policy security file (see below). Please let me know if you think 
that adding extra permissions could fix your problem.

-Olivier

// Standard extensions get all permissions by default
grant codeBase "file:${java.home}/*" {
   permission java.security.AllPermission;
};

// default permissions granted to all domains
grant {
 permission java.lang.RuntimePermission "stopThread";
 permission java.net.SocketPermission "localhost:1024-","listen";
 permission java.util.PropertyPermission "*","read,write";
 permission java.io.SerializablePermission "enableSubclassImplementation";
 permission java.lang.RuntimePermission "accessDeclaredMembers";
 permission java.lang.RuntimePermission "XMLSerializationAccess";
 permission java.lang.RuntimePermission "accessClassInPackage.sun.*";
 permission java.lang.RuntimePermission "reflectionFactoryAccess";
 permission java.lang.reflect.ReflectPermission "suppressAccessChecks";
 //permission java.io.FilePermission "<<ALL FILES>>", "read";
 permission java.io.FilePermission 
"/opt/IBMJava2-13/jre/lib/images/java-logo.gif","read";
 permission java.io.FilePermission 
"${WebotsHome}/controllers/${WebotsController}/-","read,write,delete";
 permission java.io.FilePermission 
"/var/www/cgi-bin/contest/data/${WebotsController}/-","read,write,delete";
 };

grant {
 permission java.lang.RuntimePermission "loadLibrary.JavaController";
};

grant {
permission java.util.PropertyPermission "user.dir","read";
};

grant {
 permission java.awt.AWTPermission "accessEventQueue";
};



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