Re: new draft-02 released with macros, exists, and exec.

So, like, the other day David Saez mumbled:
> Hi !!
>
> The current Exim ACL is completly useless, it needs to be completly
> rewritten. It will be easy to do it using Meng's spfd, as soon as
Hmm...  So if I get the drift, that would then turn the ACL into
a simpler call-out to the spfd for resolution kind of mechanism, right?

> Meng has a spfd that suppots unix domain sockets I will rewrite the
> acl.
Hmmm.  OK.  But is spfd's UNIX domain sockets really an issue?
I thought it was new TXT record format/argument processing.

I poked my nose into spfd, and it has parts like the following
from Mail::SPF::Query-1.7pre3.  It _looks_ like it is supposed
to support UNIX domain sockets... :-)  I confess I've not fired
it up and tested it yet.

Thanks,
jdl




    # ./spfd -path=/var/spfd             # unix domain socket
    # ./spfd -port=5970 -path=/var/spfd  # both
    #

    use Mail::SPF::Query;
    use Socket;


    if (not $port and not $path) {
      print "usage: spfd ( -port=5970 | -path=/var/spfd )\n";
      print "usage: spfd assuming -port=5970\n";
      $port=5970;
    }


    # fork one for the port, and one for the path.
    # TODO: use something smarter, like IO::Select, to do both in one process.
    my @args;
    my $sock_type;
    my $do_path = 1;
    if ($port) {
      $sock_type = "inet";
      @args = (Listen    => 1,
               LocalPort => $port,
               ReuseAddr => 1
               );



    if ($do_path and $path) {
      $sock_type = "unix";
      unlink $path if -S $path;
      @args = (Listen => 1,
               Local => $path,
               );


    my $server = $sock_type eq "inet" ? IO::Socket::INET->new(@args) : 
IO::Socket::UNIX->new(@args);

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