diff --git a/qpsmtpd-forkserver b/qpsmtpd-forkserver new file mode 100755 index 0000000..95e60a0 --- /dev/null +++ b/qpsmtpd-forkserver @@ -0,0 +1,86 @@ +#!/usr/bin/perl -w +# Copyright (c) 2001 Ask Bjoern Hansen. See the LICENSE file for details. +# The "command dispatch" system is taken from colobus - http://trainedmonkey.com/colobus/ +# +# For more information see http://develooper.com/code/qpsmtpd/ +# +# + +use lib 'lib'; +use Qpsmtpd::TcpServer; +use Qpsmtpd::Constants; +use IO::Socket; +use Socket; +use POSIX qw(:sys_wait_h); +use strict; +$| = 1; + +delete $ENV{ENV}; +$ENV{PATH} = '/bin:/usr/bin:/var/qmail/bin'; + +sub REAPER { + 1 until (-1 == waitpid(-1, WNOHANG)); + $SIG{CHLD} = \&REAPER; # unless $] >= 5.002 +} + +$SIG{CHLD} = \&REAPER; + +# establish SERVER socket, bind and listen. +my $server = IO::Socket::INET->new(LocalPort => 25, + Proto => 'tcp', + Reuse => 1, + Listen => SOMAXCONN ) + or die "making socket: $@\n"; + +# Drop priviledges +my $user = 'smtpd'; +my (undef, undef, $quid, $qgid) = getpwnam $user or + die "unable to determine uid/gid for $user\n"; +$) = ""; +POSIX::setgid($qgid) or + die "unable to change gid: $!\n"; +POSIX::setuid($quid) or + die "unable to change uid: $!\n"; +$> = $quid; + +# Load plugins here +my $plugin_loader = Qpsmtpd::TcpServer->new(); +$plugin_loader->load_plugins; + +# $plugin_loader->log(LOGINFO, "Listening on port 25"); + +my $client; +while (1) { + my $hisaddr = accept($client, $server); + if (!$hisaddr) { + # possible something condition... + next; + } + my $pid = fork; + next if $pid; + die "fork: $!" unless defined $pid; # failure + # otherwise child + close($server); # no use to child + + $SIG{CHLD} = 'DEFAULT'; + + my ($port, $iaddr) = sockaddr_in($hisaddr); + $ENV{TCPREMOTEIP} = inet_ntoa($iaddr); + $ENV{TCPREMOTEHOST} = gethostbyaddr($iaddr, AF_INET) || "Unknown"; + + # dup to STDIN/STDOUT + POSIX::dup2(fileno($client), 0); + POSIX::dup2(fileno($client), 1); + + my $qpsmtpd = Qpsmtpd::TcpServer->new(); + $qpsmtpd->start_connection(); + $qpsmtpd->run(); + + exit; # child leaves +} continue { + close($client); # no use to parent +} + +__END__ + +1;