I agree with David. This does not seem to be a SecurityManager problem.
Does your code run properly as a normal executable program (with main())?
Sameer Acharya wrote:
Have you tried adding following to your web app permissions in policy file
permission java.lang.RuntimePermission "java.lang.Runtime";
-Sameer
Mark HB <[EMAIL PROTECTED]> wrote: Hi,
My apologies for the confusion, but my previous claim to have sorted
this problem out is now incorrect. It seems with the upgrade to 1.5.0,
the execution of the external binary does work, --- but only sometimes??
---. I can't seem to work out the exact conditions that it works, and
seems to be random.
Could someone please indicate what I need to add/change in the
catalina.policy file to allow the execution of external binaries. I've
had a good look at this url and can't seem to find any indicators.
> http://tomcat.apache.org/tomcat-5.0-doc/security-manager-howto.html
Cheers
Mark
-------------------------------------
Thanks Enrico,
However I seem to have inadvertently solved it. I was updating to the
latest release of jre and recompiled the servlet with 1.5.0 and now it
works.
Previously I was using 1.3.1.
So there we go.
Cheers
Mark
Enrico Giurin wrote:
Hello,
I guess yours is a problem of security manager of tomcat.
I think you have to modify some entries of the catalina.policy file.
http://tomcat.apache.org/tomcat-5.0-doc/security-manager-howto.html
Enrico.
----- Original Message ----- From: "Mark HB"
To:
Sent: Tuesday, September 12, 2006 10:16 AM
Subject: Executing binary from Servlet
Hi,
I am looking for some help on a problem I have encountered with
executing a binary from a servlet using Runtime.getRuntime().exec()
The code that I have is simply executing a binary called "cimmsim":
File theDir = new File(curdir+"WORK/"+rand);
java.lang.String cmdline = theDir+"/cimmsim -f config";
try {
Process p = Runtime.getRuntime().exec(cmdline, null, theDir);
}
catch (IOException e)
{ e.printStackTrace(); }
The error that is produced is:
java.io.IOException: java.io.IOException:
/srv/www/tomcat5/base/webapps/simulator/WORK/yqzatmopa343/cimmsim:
cannot execute
at java.lang.UNIXProcess.(UNIXProcess.java:143)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Runtime.java:566)
at java.lang.Runtime.exec(Runtime.java:428)
at RunSimulation.run(CimmSimServlet.java:655)
A uname -a on the system gives:
Linux apppx1 2.6.16.13-4-xen #1 SMP Wed May 3 04:53:23 UTC 2006 x86_64
x86_64 x86_64 GNU/Linux
SUSE LINUX 10.1
I have ensured that the permissions are set to at least 755 and am now
at a bit of a loss.
Any ideas?
Cheers
Mark
--
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Mark Halling-Brown | Tel: +44-20-7631-6839
Research Associate |
Room 359 | Fax: +44-20-7631-6803
School of Crystallography |
Birkbeck College | Email:
Malet Street | [EMAIL PROTECTED]
London WC1E 7HX | [EMAIL PROTECTED]
UK |
http://people.cryst.bbk.ac.uk/~ghall04
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