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Diffstat (limited to 'trunk/Echolot/Pinger/Mix.pm')
| -rw-r--r-- | trunk/Echolot/Pinger/Mix.pm | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/trunk/Echolot/Pinger/Mix.pm b/trunk/Echolot/Pinger/Mix.pm new file mode 100644 index 0000000..66eaf25 --- /dev/null +++ b/trunk/Echolot/Pinger/Mix.pm @@ -0,0 +1,139 @@ +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: |