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I am running Exim 4.24.
This is what I am trying to accomplish:
1. Use a filter to parse an incoming message based on the SUBJECT and SENDER.
2. Based on the SUBJECT, pass the message SUBJECT and BODY to a Perl
subroutine (I verified that the Perl interpreter functions - see below)
3. Use the return value of the Perl subroutine in the BODY of a reply message
to be launched to the SENDER.
I am failing at step (2) - I am unable to pass parameters to the Perl
subroutine, Exim is trying to expand the string I want passed to Perl.
This is the error message I get:
> LOG: MAIN
== monarch@trpdweb R=userforward defer (-17): error in filter file: failed to
expand "${perl{perl_subroutine}{$header_subject}}" in mail command: missing }
at end of string - could be header name not terminated by colon
Without success I tried double quotes, single quotes, escaped quotes, et
cetera.
(This worked in filter test mode though...)
I was unable to find any documentation on string expansion issues pertaining
to passing parameters in the aforementioned context.
Here are my questions:
a - What is the proper syntax for step (2) above? Should I be obtaining
parameters from within the Perl subroutine instead?
b - Can I have a Perl subroutine (array or a hash) return multiple variables
to the filter?
c - Can I access all filter commands from within a Perl subroutine (i.e: could
I execute step (3) from within the subroutine?)
d - Can you recommend a good source of information on using Perl with Exim?
Proof that the built-in Perl interpreter works:
#Perl subroutine
sub hello {
return 1;
}
# Exim filter
if ${perl{hello}} is "1"
then deliver monarch@trpdweb
endif
#Results:
LOG: MAIN
<= monarch@trpdweb U=monarch P=local S=405
[monarch@trpdweb monarch]$ LOG: MAIN
=> monarch <monarch@trpdweb> R=localuser T=local_delivery
LOG: MAIN
Completed
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===References:===
1.
http://g.msn.com/8HMAENUS/2755??PS=
