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| -rw-r--r-- | Echolot/Pinger/CPunk.pm | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/Echolot/Pinger/CPunk.pm b/Echolot/Pinger/CPunk.pm new file mode 100644 index 0000000..4d4f504 --- /dev/null +++ b/Echolot/Pinger/CPunk.pm @@ -0,0 +1,216 @@ +package Echolot::Pinger::CPunk; + +# (c) 2002 Peter Palfrader <peter@palfrader.org> +# $Id: CPunk.pm,v 1.1 2002/06/18 17:18:40 weasel Exp $ +# + +=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 warnings; +use Carp qw{cluck}; +use English; +use GnuPG::Interface; +use IO::Handle; + +sub encrypt_to($$$$) { + my ($msg, $recipient, $keys, $pgp2compat) = @_; + + (defined $keys->{$recipient}) or + cluck ("Key for recipient $recipient is not defined"), + return undef; + (defined $keys->{$recipient}->{'key'}) or + cluck ("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->options->hash_init( + homedir => Echolot::Config::get()->{'gnupghome'} ); + $GnuPG->options->meta_interactive( 0 ); + + my ( $stdin_fh, $stdout_fh, $stderr_fh, $status_fh ) + = ( IO::Handle->new(), + IO::Handle->new(), + IO::Handle->new(), + IO::Handle->new(), + ); + my $handles = GnuPG::Handles->new ( + stdin => $stdin_fh, + stdout => $stdout_fh, + stderr => $stderr_fh, + status => $status_fh + ); + my $pid = $GnuPG->wrap_call( + commands => [ '--import' ], + command_args => [qw{--no-options --no-default-keyring --fast-list-mode --keyring}, $keyring, '--', '-' ], + handles => $handles ); + print $stdin_fh $keys->{$recipient}->{'key'}; + close($stdin_fh); + + my $stdout = join '', <$stdout_fh>; close($stdout_fh); + my $stderr = join '', <$stderr_fh>; close($stderr_fh); + my $status = join '', <$status_fh>; close($status_fh); + + waitpid $pid, 0; + + ($stdout eq '') or + cluck("GnuPG returned something in stdout '$stdout' while adding key for '$recipient': So what?\n"); + #($stderr eq '') or + #cluck("GnuPG returned something in stderr: '$stderr' while adding key for '$recipient'; returning\n"), + #return undef; + ($status =~ /^^\[GNUPG:\] IMPORTED $recipient /m) or + cluck("GnuPG status '$status' didn't indicate key for '$recipient' was imporeted correctly. Returning\n"), + return undef; + + + + + + + + + + + + $GnuPG->options->hash_init( + armor => 1, + recipients => [ $recipient ] ); + + ( $stdin_fh, $stdout_fh, $stderr_fh, $status_fh ) + = ( IO::Handle->new(), + IO::Handle->new(), + IO::Handle->new(), + IO::Handle->new(), + ); + $handles = GnuPG::Handles->new ( + stdin => $stdin_fh, + stdout => $stdout_fh, + stderr => $stderr_fh, + status => $status_fh + ); + my $command_args = [qw{--no-options --always-trust --no-default-keyring --keyring}, $keyring]; + my $plaintextfile; + if ($pgp2compat) { + #pgp2compat requires files, cannot use stdin + + $plaintextfile = Echolot::Config::get()->{'tmpdir'}.'/'. + Echolot::Globals::get()->{'hostname'}.".".time.'.'.$PROCESS_ID.'_'.Echolot::Globals::get()->{'internalcounter'}++.'.plaintext'; + open (F, '>'.$plaintextfile) or + cluck("Cannot open $plaintextfile for writing: $!"), + return 0; + print (F $msg); + close (F) or + cluck("Cannot close $plaintextfile"), + return 0; + + + push @$command_args, qw{--pgp2 --cipher-algo 3DES}, $plaintextfile; + #push @$command_args, '--load-extension', 'idea', '--pgp2', $plaintextfile; + } else { + #push @$command_args, qw{ --pgp6 }; + #push @$command_args, qw{--disable-mdc --no-force-v4-certs --no-comment --escape-from --force-v3-sigs --no-ask-sig-expire --no-ask-cert-expire --digest-algo MD5 --compress-algo 1 --cipher-algo 3DES }; + #push @$command_args, qw{--rfc1991 --no-openpgp --disable-mdc --no-force-v4-certs --no-comment --escape-from --force-v3-sigs --no-ask-sig-expire --no-ask-cert-expire --digest-algo MD5 --compress-algo 1}; + }; + + + $pid = $GnuPG->encrypt( + command_args => $command_args, + handles => $handles ); + unless ($pgp2compat) { + print $stdin_fh $msg; + }; + close($stdin_fh); + + $stdout = join '', <$stdout_fh>; close($stdout_fh); + $stderr = join '', <$stderr_fh>; close($stderr_fh); + $status = join '', <$status_fh>; close($status_fh); + + waitpid $pid, 0; + + #($stderr eq '') or + #cluck("GnuPG returned something in stderr: '$stderr' while encrypting to '$recipient'; returning"), + #return undef; + (($status =~ /^^\[GNUPG:\] BEGIN_ENCRYPTION\s/m) && + ($status =~ /^^\[GNUPG:\] END_ENCRYPTION\s/m)) or + cluck("GnuPG status '$status' didn't indicate message to '$recipient' was encrypted correctly. Returning\n"), + return undef; + + unlink ($keyring) or + cluck("Cannot unlink tmp keyring '$keyring'"), + return undef; + + (defined $plaintextfile) and + ( unlink ($plaintextfile) or + cluck("Cannot unlink tmp keyring '$plaintextfile'"), + return undef); + + + my $result; + + if ($pgp2compat) { + #pgp2compat requires files, cannot use stdin + + $plaintextfile .= '.asc'; + open (F, '<'.$plaintextfile) or + cluck("Cannot open $plaintextfile for reading $!"), + return 0; + $result = join '', <F>; + close (F) or + cluck("Cannot close $plaintextfile"), + return 0; + + (defined $plaintextfile) and + ( unlink ($plaintextfile) or + cluck("Cannot unlink tmp keyring '$plaintextfile'"), + return undef); + } else { + $result = $stdout; + }; + + $result =~ s,^Version: .*$,Version: N/A,m; + return $result; +}; + +sub ping($$$$$) { + my ($body, $to, $chain, $keys, $pgp2compat) = @_; + + my $msg = $body; + + for my $hop (reverse @$chain) { + $msg = "::\n". + "Anon-To: $to\n". + "\n". + $msg; + my $encrypted = encrypt_to($msg, $hop->{'keyid'}, $keys, $pgp2compat); + (defined $encrypted) or + cluck("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; +# vim: set ts=4 shiftwidth=4: |