RE: [exim] Calling my own app from an ACL ???

> > If it is a listening daemon process you can use the
> readsocket (UNIX
> > or INET sockets):
> >
> > ${readsocket{<name>}{<request>}{<timeout>}{<eol string>}{<fail
> > string>}}
>
> Thanks Herb!
>
> This looks pretty interesting... A daemon might be the way to
> go for this.
> Does this command get expanded to whatever the daemon
> returns?

Yes.

> Is the readsocket command new? I can't find it in
> the docs...

(I am the wrong guy to ask about "new" since I am brand
new to Exim mysefl). Readsocket is in the spec, along
with Readfile, right above the (perl &) Run command reference
I gave you:
http://www.exim.org/exim-html-4.50/doc/html/spec_11.html#IX851


Here's my greylistd that is driven by the DNSBL
(ALL_DNS_BLACKLISTS is defined to thte list of
RBL we wish to check):

defer
    message        = $sender_host_address is not yet authorized to deliver \
                     mail from <$sender_address> to <$local_part@$domain>. \
                     Please try later.
    log_message    = greylisted.
    !senders       = :
    !authenticated = *
    domains        = +local_domains : +relay_to_domains
    !hosts         = : +relay_from_hosts : \
                     ${if exists {/etc/greylistd/whitelist-hosts}\
                                 {/etc/greylistd/whitelist-hosts}{}} : \
                     ${if exists {/var/lib/greylistd/whitelist-hosts}\
                                 {/var/lib/greylistd/whitelist-hosts}{}}
    dnslists       = ALL_DNS_BLACKLISTS 
    condition      = ${readsocket{/var/run/greylistd/socket}\
                                 {--grey \
                                  ${mask:$sender_host_address/24} \
                                  $sender_address \
                                  $local_part@$domain}\
                                 {5s}{}{false}}

Here is one where I use the return value more explicitly;
it checks and sets the SPF status as a header:

warn set acl_c4 = ${if match{${readsocket{/var/run/spfd}\
  {ip=$sender_host_address\nhelo=\
  $sender_helo_name\nsender=$sender_address\n\n}\
    {7s}{ }{socket_error}}\
 }{result=(pass|fail|socket_error|softfail|none|\
 neutral|error|unknown|(\s*\S+))}{$1}{weird}}
 logwrite =    :reject: H=$sender_fullhost listed SPF [$acl_c4]
              message = X-SPF: $acl_c4             

(I changed line breaks, appended \ above to try to avoid
wrap but did not TEST the changes.)
        
--
Herb Martin
> -----Original Message-----
> From: exim-users-bounces@???
> [mailto:exim-users-bounces@exim.org] On Behalf Of Jim Archer
> Sent: Saturday, August 06, 2005 6:38 PM
> To: Herb Martin; 'Mailinglist EXIM'
> Subject: RE: [exim] Calling my own app from an ACL ???
>
> --On Saturday, August 06, 2005 5:54 PM -0500 Herb Martin
> <HerbM@???> wrote:
>
>
>
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