Re: [exim] Run a Program from within Exim

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Thank you very much! That worked great!



Quoting Jakob Hirsch <jh@???>:

> David Cunningham, 2010-03-23 12:46:
>
>> The short of the story is that I need exim to execute another program
>> upon the delivery of an email and send that program the following
>> string:
>> "/var/spool/maildirs/${substr_0_10:$tod_log}/${domain}/${local_part}/Maildir/new"
>
> What do you mean by "send"? Give as an argument? Write to its stdin?
>
>> For example, I tried adding a condition to my local_delivery transport
>> that looked like this:
>>
>> condition = {run echo
>> "/var/spool/maildirs/${substr_0_10:$tod_log}/${domain}/${local_part}/Maildir"
>> >> /dev/shm/temp.file}{0}{1}
>
> RTFM:
>
> 1. The syntax is
> ${run{<command> <args>}{<string1>}{<string2>}}
> not
> {run <command> ...}
>
> 2. "As in other command executions from Exim, a shell is not used by
> default. If you want a shell, you must explicitly code it. "
>
> As you use redirection in your test, you need to use a shell there.
>
> 3. You have to give the full path to the executable you want to run.
> (Unfortunately, this is not documented in the spec of the ${run...}
> expansion item. Should probably be added.)
>
> So the expansion string would look like this:
>
> ${run {/bin/sh -c "echo
> /var/spool/maildirs/${substr_0_10:$tod_log/${domain}/${local_part}/Maildir
>>> /dev/shm/temp.file"}{0}{1}}
>
> You really have to take care here that nobody can do shell injection
> (e.g. by using ';' or other special shell chars in the local part). This
> only applies when using a shell, so you should probably avoid that. Just
> use a little script, that logs what your program would get, e.g.
>
> #/bin/sh
> echo $1 >> /tmp/bla.log
>
> and use that instead of your real program.
>
>> In this example I am simply trying to echo that string to a file in
>> /dev/shm. I do not get an error in my logs, but I also do not get
>> this file.
>
> Errors are hidden here. Look into $runrc to see what went wrong.
>
>