package Echolot::Pinger::CPunk; # (c) 2002 Peter Palfrader # $Id: CPunk.pm,v 1.8 2003/01/02 20:04:50 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 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->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 ) = ( 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 imported correctly. Returning\n"), return undef; $msg =~ s/\r?\n/\r\n/g; $GnuPG->options->hash_init( armor => 1 ); ( $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 --cipher-algo 3DES --keyring}, $keyring, '--recipient', $recipient]; 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}, $plaintextfile; } else { # nothing here ATM. }; $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 (stderr: $stderr; args: ".join(' ', @$command_args)."). Returning\n"), return undef; unlink ($keyring) or cluck("Cannot unlink tmp keyring '$keyring'"), return undef; unlink ($keyring.'~'); # gnupg does those evil backups (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 '', ; 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". $msg; if ($hop->{'encrypt'}) { 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: