Multiple scripts with postlogin

[Aki Tuomi]

> On 01/03/2023 20:39 EET Dan Conway <darkc0de at archnix6.net> wrote:
> 
> 
> Hello,
> I'm having trouble understanding how to execute separate scripts with postlogin. According to the documentation, it should be as simple as:
> 
> You can run multiple post-login scripts by just giving multiple scripts as parameters to script-login, for example:
> executable = script-login rawlog /usr/local/bin/postlogin.sh /usr/local/bin/postlogin2.sh
> 
> Given this information, I supplied two scripts to service imap-postlogin below:
> service imap {
>   executable = imap imap-postlogin
> }
> 
> service imap-postlogin {
>   executable = script-login -d rawlog /usr/local/bin/postlogin.pl /usr/local/bin/postlogin2.pl
>   user = $default_internal_user
>   unix_listener imap-postlogin {
>   }
> }
> 
> Both scripts simply print "Script 1" and "Script 2" to STDERR. Here is what they look like:
> #!/usr/bin/perl
> 
> use strict;
> use warnings;
> 
> print STDERR "Script 1\n";
> system("/usr/lib/dovecot/script-login");
> 
> After logging in, only the first script is executed. The second one is ignored. I tried not executing "/usr/lib/dovecot/script-login" in the first script, in hopes that it would execute the second script, but it only denies the connection after printing "Script 1"
> 
> imap-postlogin: Error: Script 1
> imap(<user>): Error: Post-login script denied access to user <user>
> Am I missing something?
> Thanks.
> 
> 
> 
> 
>

You need to use exec, not system. system executes it as child process, and then returns to your current script, exec replaces your execution with script-login.

Aki