[
https://bro-tracker.atlassian.net/browse/BIT-1475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=22101#comment-22101
]
Aaron commented on BIT-1475:
----------------------------
Hi Johanna, you are right, I double checked my own example and it does
work--apparently I had simplified it too much so that the behavior isn't
observable anymore. The actual setup is a lot more specific. I'm actually
invoking a python script.
I've tried to narrow down where in the python things get locked up, but I could
find no discernible pattern, in fact after I threw out enough code it went from
"never prints the output" to "sometimes prints it and sometimes does not". I'm
sending my bro script and the python code-- I apologize for not being able to
find an absolute minimal example.
[^bro.tar.gz]
With this code, if you run "bro t1.bro" I would expect you to see my python
output (the name of a file passed to it from bro). If you run "bro -r my.pcap
t1.bro" I would expect you to never see any output related to the script.
Included is the same pcap I'm using but I don't think the file itself has
anything to do with the problem because, in this example, I'm not even looking
at it, I'm just putting everything in bro_init.
Is there some kind of timeout where if the process takes too long bro just
forgets about it? The code is really not doing anything; perhaps all those
nested python imports is taking too much time.
Bro is version 2.3.1.
> Exec::Run does not complete
> ---------------------------
>
> Key: BIT-1475
> URL: https://bro-tracker.atlassian.net/browse/BIT-1475
> Project: Bro Issue Tracker
> Issue Type: Problem
> Components: Bro
> Affects Versions: 2.3
> Environment: Centos 6.6
> Reporter: Aaron
> Labels: hang
> Attachments: bro.tar.gz
>
>
> I'm having trouble running an external program in the callback function for
> an event when processing a pcap file. It seems to work in bro_init, however,
> which confuses me.
> The working file will print out the output of the "ls" command, whereas the
> not-working file will not print out anything no matter how long I wait.
> Specifically here I want to use the event when bro detects a file in the pcap.
> working.bro (ran as simply "bro working.bro"):
> {code:java}
> @load base/utils/exec
> redef exit_only_after_terminate=T;
> event bro_init()
> {
> local t= "ls /";
> local cmd = Exec::Command($cmd=t);
> when (local res = Exec::run(cmd))
> {
> print "hello";
> print res$stdout;
> }
> }
> {code}
> notworking.bro (ran as bro -r my.pcap notworking.bro:
> {code:java}
> @load base/utils/exec
> @load base/frameworks/files
> @load base/frameworks/notice
> redef exit_only_after_terminate=T;
> event file_new(f: fa_file)
> {
> local t ="ls /";
> local cmd = Exec::Command($cmd=t);
> when (local res = Exec::run(cmd))
> {
> print "hello";
> print res$stdout;
> }
> }
> {code}
--
This message was sent by Atlassian JIRA
(v7.0.0-OD-05-005#70102)
_______________________________________________
bro-dev mailing list
[email protected]
http://mailman.icsi.berkeley.edu/mailman/listinfo/bro-dev
