/usr/share/perl5/Echolot/Pinger/CPunk.pm is in echolot 2.1.9-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | package Echolot::Pinger::CPunk;
#
#
# This file is part of Echolot - a Pinger for anonymous remailers.
#
# Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2012, 2014 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::CPunk - send cypherpunk pings
=head1 DESCRIPTION
This package provides functions for sending cypherpunk (type I) pings.
=cut
use strict;
use English;
use GnuPG::Interface;
use Echolot::Log;
sub encrypt_to($$$$) {
my ($msg, $recipient, $keys, $pgp2compat) = @_;
(defined $keys->{$recipient}) or
Echolot::Log::warn("Key for recipient $recipient is not defined."),
return undef;
(defined $keys->{$recipient}->{'key'}) or
Echolot::Log::warn("Key->key for recipient $recipient is not defined."),
return undef;
my $keyring = Echolot::Config::get()->{'tmpdir'}.'/'.
Echolot::Globals::get()->{'hostname'}.".".time.'.'.$PROCESS_ID.'_'.Echolot::Globals::get()->{'internalcounter'}++.'.keyring';
my $GnuPG = new GnuPG::Interface;
$GnuPG->call( Echolot::Config::get()->{'gnupg'} ) if (Echolot::Config::get()->{'gnupg'});
$GnuPG->options->hash_init(
homedir => Echolot::Config::get()->{'gnupghome'} );
$GnuPG->options->meta_interactive( 0 );
my ( $stdin_fh, $stdout_fh, $stderr_fh, $status_fh, $handles ) = Echolot::Tools::make_gpg_fds();
my $pid = $GnuPG->wrap_call(
commands => [qw{--no-options --no-secmem-warning --no-default-keyring --fast-list-mode --keyring}, $keyring, '--import'],
command_args => ['--', '-' ],
handles => $handles );
my ($stdout, $stderr, $status) = Echolot::Tools::readwrite_gpg($keys->{$recipient}->{'key'}, $stdin_fh, $stdout_fh, $stderr_fh, $status_fh);
waitpid $pid, 0;
($stdout eq '') or
Echolot::Log::info("GnuPG returned something in stdout '$stdout' while adding key for '$recipient': So what?");
#($stderr eq '') or
#Echolot::Log::warn("GnuPG returned something in stderr: '$stderr' while adding key for '$recipient'; returning."),
#return undef;
($status =~ /^^\[GNUPG:\] IMPORTED $recipient /m) or
Echolot::Log::info("GnuPG status '$status' didn't indicate key for '$recipient' was imported correctly."),
return undef;
#$msg =~ s/\r?\n/\r\n/g;
$GnuPG->options->hash_init(
armor => 1 );
( $stdin_fh, $stdout_fh, $stderr_fh, $status_fh, $handles ) = Echolot::Tools::make_gpg_fds();
my $plaintextfile;
# Files are required for compaitibility with PGP 2.*
# we also use files in all other cases since there is a bug in either GnuPG or GnuPG::Interface
# that let Echolot die if in certain cases:
# If a key is unuseable because it expired and we want to encrypt something to it
# pingd dies if there is only enough time between calling encrypt() and printing the message
# to GnuPG. (a sleep 1 triggered that reproduceably)
$plaintextfile = Echolot::Config::get()->{'tmpdir'}.'/'.
Echolot::Globals::get()->{'hostname'}.".".time.'.'.$PROCESS_ID.'_'.Echolot::Globals::get()->{'internalcounter'}++.'.plaintext';
open (F, '>'.$plaintextfile) or
Echolot::Log::warn("Cannot open $plaintextfile for writing: $!."),
return 0;
print (F $msg);
close (F) or
Echolot::Log::warn("Cannot close $plaintextfile."),
return 0;
my $commands = [qw{--no-options --no-secmem-warning --always-trust --no-default-keyring --textmode --cipher-algo 3DES --keyring}, $keyring, '--recipient', $recipient, '--encrypt'];
my $command_args = ['--', $plaintextfile];
$pid = $GnuPG->wrap_call(
commands => $commands,
command_args => $command_args,
handles => $handles );
($stdout, $stderr, $status) = Echolot::Tools::readwrite_gpg('', $stdin_fh, $stdout_fh, $stderr_fh, $status_fh);
waitpid $pid, 0;
#($stderr eq '') or
#Echolot::Log::warn("GnuPG returned something in stderr: '$stderr' while encrypting to '$recipient'."),
#return undef;
($status =~ /^\[GNUPG:\] KEYEXPIRED (\d+)/m) and
Echolot::Log::info("Key $recipient expired at ".scalar gmtime($1)." UTC"),
return undef;
(($status =~ /^\[GNUPG:\] BEGIN_ENCRYPTION\s/m) &&
($status =~ /^\[GNUPG:\] END_ENCRYPTION\s/m)) or
Echolot::Log::info("GnuPG status '$status' didn't indicate message to '$recipient' was encrypted correctly (stderr: $stderr; args: ".join(' ', @$commands, @$command_args).")."),
return undef;
unlink ($keyring) or
Echolot::Log::warn("Cannot unlink tmp keyring '$keyring'."),
return undef;
unlink ($keyring.'~'); # gnupg does those evil backups
(defined $plaintextfile) and
(unlink ($plaintextfile) or
Echolot::Log::warn("Cannot unlink tmp plaintextfile '$plaintextfile'."),
return undef);
my $result;
$plaintextfile .= '.asc';
open (F, '<'.$plaintextfile) or
Echolot::Log::warn("Cannot open $plaintextfile for reading: $!."),
return 0;
$result = join '', <F>;
close (F) or
Echolot::Log::warn("Cannot close $plaintextfile."),
return 0;
(defined $plaintextfile) and
(unlink ($plaintextfile) or
Echolot::Log::warn("Cannot unlink tmp plaintextfile '$plaintextfile'."),
return undef);
$result =~ s,^Version: .*$,Version: N/A,m;
#$result =~ s/\r?\n/\r\n/g;
return $result;
};
sub ping($$$$$) {
my ($body, $to, $with_from, $chain, $keys) = @_;
my $msg = $body;
for my $hop (reverse @$chain) {
my $header = '';
if ($with_from) {
my $address = Echolot::Config::get()->{'my_localpart'} . '@' .
Echolot::Config::get()->{'my_domain'};
$header = "##\nFrom: Echolot Pinger <$address>\n\n";
$with_from = 0;
};
# "Latent-Time: +0\n".
$msg = "::\n".
"Anon-To: $to\n".
"\n".
$header.
$msg;
if ($hop->{'encrypt'}) {
my $encrypted = encrypt_to($msg, $hop->{'keyid'}, $keys, $hop->{'pgp2compat'});
(defined $encrypted) or
Echolot::Log::debug("Encrypted is undefined."),
return undef;
$msg = "::\n".
"Encrypted: PGP\n".
"\n".
$encrypted;
};
$to = $hop->{'address'};
}
Echolot::Tools::send_message(
To => $to,
Body => $msg
);
return 1;
};
1;
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