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package Exim::Runtest;
use strict;
use warnings;
use IO::Socket::INET;
use Carp;
use List::Util qw'shuffle';
# find a group name, preferrable 'mail', but
# use some other random name if 'mail' isn't a valid group
# name
sub mailgroup {
my $group = shift;
croak "Need a group *name*, not a numeric group id."
if $group =~ /^\d+$/;
return $group if getgrnam $group;
my @groups;
setgrent or die "setgrent: $!\n";
push @groups, $_ while defined($_ = getgrent);
endgrent;
return (shuffle @groups)[0];
}
sub dynamic_socket {
my $socket;
for (my $port = 1024; $port < 65000; $port++) {
$socket = IO::Socket::INET->new(
LocalHost => '127.0.0.1',
LocalPort => $port,
Listen => 10,
ReuseAddr => 1,
) and return $socket;
}
croak 'Can not allocate a free port.';
}
1;
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