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package Echolot::Pinger::Mix;
#
# $Id$
#
# This file is part of Echolot - a Pinger for anonymous remailers.
#
# Copyright (c) 2002, 2003, 2004 Peter Palfrader <peter@palfrader.org>
#
# This program is free software. you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
=pod
=head1 Name
Echolot::Pinger::Mix - send mix pings
=head1 DESCRIPTION
This package provides functions for sending mixmaster (type II) pings.
=cut
use strict;
use English;
use IO::Handle;
use Echolot::Log;
sub ping($$$$$) {
my ($body, $to, $with_from, $chain, $keys) = @_;
my $chaincomma = join (',', @$chain);
my $keyring = Echolot::Config::get()->{'mixhome'}.'/pubring.mix';
open (F, '>'.$keyring) or
Echolot::Log::warn("Cannot open $keyring for writing: $!."),
return 0;
for my $keyid (keys %$keys) {
print (F $keys->{$keyid}->{'summary'}, "\n\n");
print (F $keys->{$keyid}->{'key'},"\n\n");
};
close (F) or
Echolot::Log::warn("Cannot close $keyring: $!."),
return 0;
my $type2list = Echolot::Config::get()->{'mixhome'}.'/type2.list';
open (F, '>'.$type2list) or
Echolot::Log::warn("Cannot open $type2list for writing: $!."),
return 0;
for my $keyid (keys %$keys) {
print (F $keys->{$keyid}->{'summary'}, "\n");
};
close (F) or
Echolot::Log::warn("Cannot close $type2list: $!."),
return 0;
my $mixcfg = Echolot::Config::get()->{'mixhome'}.'/mix.cfg';
my $address = Echolot::Config::get()->{'my_localpart'} . '@' .
Echolot::Config::get()->{'my_domain'};
my $sendmail = Echolot::Config::get()->{'sendmail'};
open (F, ">$mixcfg") or
Echolot::Log::warn("Cannot open $mixcfg for writing: $!."),
return 0;
print (F "REMAIL n\n");
print (F "NAME Echolot Pinger\n");
print (F "ADDRESS $address\n");
print (F "PUBRING pubring.mix\n");
print (F "TYPE2LIST type2.list\n");
print (F "SENDMAIL $sendmail -f $address -t\n");
print (F "VERBOSE 0\n");
print (F "INDUMMYP 0\n");
print (F "OUTDUMMYP 0\n");
close (F) or
Echolot::Log::warn("Cannot close $mixcfg: $!."),
return 0;
my ($stdinR, $stdinW) = (IO::Handle->new(), IO::Handle->new());
my ($stdoutR, $stdoutW) = (IO::Handle->new(), IO::Handle->new());
my ($stderrR, $stderrW) = (IO::Handle->new(), IO::Handle->new());
pipe $stdinR, $stdinW;
pipe $stdoutR, $stdoutW;
pipe $stderrR, $stderrW;
my $pid = fork();
defined $pid or
Echolot::Log::warn("Cannot fork for calling mixmaster: $!."),
return 0;
unless ($pid) { # child
$stdinW->close;
$stdoutR->close;
$stderrR->close;
close STDIN;
close STDOUT;
close STDERR;
open (STDIN, "<&".$stdinR->fileno) or Echolot::Log::warn ("Cannot dup stdinR (fd ".$stdinR->fileno.") as STDIN: $!");
open (STDOUT, ">&".$stdoutW->fileno) or Echolot::Log::warn ("Cannot dup stdoutW (fd ".$stdoutW->fileno.") as STDOUT: $!");
open (STDERR, ">&".$stderrW->fileno) or Echolot::Log::warn ("Cannot dup stderrW (fd ".$stderrW->fileno.") as STDERE: $!");
$ENV{'MIXPATH'} = Echolot::Config::get()->{'mixhome'};
{ exec(Echolot::Config::get()->{'mixmaster'}, qw{-m -S -l}, $chaincomma); };
Echolot::Log::warn("Cannot exec mixpinger: $!.");
exit(1);
};
$stdinR->close;
$stdoutW->close;
$stderrW->close;
my $msg;
$msg .= "From: Echolot Pinger <$address>\n" if $with_from;
$msg .= "To: $to\n\n$body\n";
Echolot::Log::debug("mixping: fds: stdinW $stdinW; stdoutR $stdoutR; stderrR $stderrR."),
my ($stdout, $stderr, undef) = Echolot::Tools::readwrite_gpg($msg, $stdinW, $stdoutR, $stderrR, undef);
waitpid $pid, 0;
$stderr =~ s/\n+$//;
Echolot::Log::debug("Mixmaster said on unfiltered stderr: $stderr") if ($stderr ne '');
$stderr =~ s/^Chain: .*//mg;
$stderr =~ s/^Warning: The message has a From: line.*//mg;
$stderr =~ s/\n+$//;
Echolot::Log::info("Mixmaster said on stdout: $stdout") if ($stdout ne '');
Echolot::Log::warn("Mixmaster said on stderr: $stderr") if ($stderr ne '');
return 1;
};
1;
# vim: set ts=4 shiftwidth=4:
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