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52 package RT::Crypt::GnuPG;
56 use RT::EmailParser ();
57 use RT::Util 'safe_run_child', 'mime_recommended_filename';
61 RT::Crypt::GnuPG - encrypt/decrypt and sign/verify email messages with the GNU Privacy Guard (GPG)
65 This module provides support for encryption and signing of outgoing messages,
66 as well as the decryption and verification of incoming email.
70 You can control the configuration of this subsystem from RT's configuration file.
71 Some options are available via the web interface, but to enable this functionality, you
72 MUST start in the configuration file.
74 There are two hashes, GnuPG and GnuPGOptions in the configuration file. The
75 first one controls RT specific options. It enables you to enable/disable facility
76 or change the format of messages. The second one is a hash with options for the
77 'gnupg' utility. You can use it to define a keyserver, enable auto-retrieval keys
78 and set almost any option 'gnupg' supports on your system.
84 Set to true value to enable this subsystem:
91 However, note that you B<must> add the 'Auth::GnuPG' email filter to enable
92 the handling of incoming encrypted/signed messages.
94 =head3 Format of outgoing messages
96 Format of outgoing messages can be controlled using the 'OutgoingMessagesFormat'
97 option in the RT config:
100 ... other options ...
101 OutgoingMessagesFormat => 'RFC',
102 ... other options ...
108 ... other options ...
109 OutgoingMessagesFormat => 'Inline',
110 ... other options ...
113 This framework implements two formats of signing and encrypting of email messages:
119 This format is also known as GPG/MIME and described in RFC3156 and RFC1847.
120 Technique described in these RFCs is well supported by many mail user
121 agents (MUA), but some MUAs support only inline signatures and encryption,
122 so it's possible to use inline format (see below).
126 This format doesn't take advantage of MIME, but some mail clients do
127 not support GPG/MIME.
129 We sign text parts using clear signatures. For each attachments another
130 attachment with a signature is added with '.sig' extension.
132 Encryption of text parts is implemented using inline format, other parts
133 are replaced with attachments with the filename extension '.pgp'.
135 This format is discouraged because modern mail clients typically don't support
140 =head3 Encrypting data in the database
142 You can allow users to encrypt data in the database using
143 option C<AllowEncryptDataInDB>. By default it's disabled.
144 Users must have rights to see and modify tickets to use
149 Use this hash to set options of the 'gnupg' program. You can define almost any
150 option you want which gnupg supports, but never try to set options which
151 change output format or gnupg's commands, such as --sign (command),
152 --list-options (option) and other.
154 Some GnuPG options take arguments while others take none. (Such as --use-agent).
155 For options without specific value use C<undef> as hash value.
156 To disable these option just comment them out or delete them from the hash
159 'option-with-value' => 'value',
160 'enabled-option-without-value' => undef,
161 # 'commented-option' => 'value or undef',
164 B<NOTE> that options may contain '-' character and such options B<MUST> be
165 quoted, otherwise you can see quite cryptic error 'gpg: Invalid option "--0"'.
171 The GnuPG home directory, by default it is set to F</opt/rt4/var/data/gpg>.
173 You can manage this data with the 'gpg' commandline utility
174 using the GNUPGHOME environment variable or --homedir option.
175 Other utilities may be used as well.
177 In a standard installation, access to this directory should be granted to
178 the web server user which is running RT's web interface, but if you're running
179 cronjobs or other utilities that access RT directly via API and may generate
180 encrypted/signed notifications then the users you execute these scripts under
181 must have access too.
183 However, granting access to the dir to many users makes your setup less secure,
184 some features, such as auto-import of keys, may not be available if you do not.
185 To enable this features and suppress warnings about permissions on
186 the dir use --no-permission-warning.
190 This option is required in advance when RFC format for outgoing messages is
191 used. We can not get default algorithm from gpg program so RT uses 'SHA1' by
192 default. You may want to override it. You can use MD5, SHA1, RIPEMD160,
193 SHA256 or other, however use `gpg --version` command to get information about
194 supported algorithms by your gpg. These algorithms are listed as hash-functions.
198 This option lets you use GPG Agent to cache the passphrase of RT's key. See
199 L<http://www.gnupg.org/documentation/manuals/gnupg/Invoking-GPG_002dAGENT.html>
200 for information about GPG Agent.
204 This option lets you set the passphrase of RT's key directly. This option is
205 special in that it isn't passed directly to GPG, but is put into a file that
206 GPG then reads (which is more secure). The downside is that anyone who has read
207 access to your RT_SiteConfig.pm file can see the passphrase, thus we recommend
208 the --use-agent option instead.
212 Read `man gpg` to get list of all options this program support.
216 =head2 Per-queue options
218 Using the web interface it's possible to enable signing and/or encrypting by
219 default. As an administrative user of RT, open 'Configuration' then 'Queues',
220 and select a queue. On the page you can see information about the queue's keys
221 at the bottom and two checkboxes to choose default actions.
223 As well, encryption is enabled for autoreplies and other notifications when
224 an encypted message enters system via mailgate interface even if queue's
227 =head2 Handling incoming messages
229 To enable handling of encrypted and signed message in the RT you should add
230 'Auth::GnuPG' mail plugin.
232 Set(@MailPlugins, 'Auth::MailFrom', 'Auth::GnuPG', ...other filter...);
234 See also `perldoc lib/RT/Interface/Email/Auth/GnuPG.pm`.
236 =head2 Errors handling
238 There are several global templates created in the database by default. RT
239 uses these templates to send error messages to users or RT's owner. These
240 templates have 'Error:' or 'Error to RT owner:' prefix in the name. You can
241 adjust the text of the messages using the web interface.
243 Note that C<$TicketObj>, C<$TransactionObj> and other variable usually available
244 in RT's templates are not available in these templates, but each template
245 used for errors reporting has set of available data structures you can use to
246 build better messages. See default templates and descriptions below.
248 As well, you can disable particular notification by deleting content of
249 a template. You can delete a template too, but in this case you'll see
250 error messages in the logs when RT can not load template you've deleted.
252 =head3 Problems with public keys
254 Template 'Error: public key' is used to inform the user that RT has problems with
255 his public key and won't be able to send him encrypted content. There are several
256 reasons why RT can't use a key. However, the actual reason is not sent to the user,
257 but sent to RT owner using 'Error to RT owner: public key'.
259 The possible reasons: "Not Found", "Ambiguous specification", "Wrong
260 key usage", "Key revoked", "Key expired", "No CRL known", "CRL too
261 old", "Policy mismatch", "Not a secret key", "Key not trusted" or
262 "No specific reason given".
264 Due to limitations of GnuPG, it's impossible to encrypt to an untrusted key,
265 unless 'always trust' mode is enabled.
267 In the 'Error: public key' template there are a few additional variables available:
271 =item $Message - user friendly error message
273 =item $Reason - short reason as listed above
275 =item $Recipient - recipient's identification
277 =item $AddressObj - L<Email::Address> object containing recipient's email address
281 A message can have several invalid recipients, to avoid sending many emails
282 to the RT owner the system sends one message to the owner, grouped by
283 recipient. In the 'Error to RT owner: public key' template a C<@BadRecipients>
284 array is available where each element is a hash reference that describes one
285 recipient using the same fields as described above. So it's something like:
288 { Message => '...', Reason => '...', Recipient => '...', ...},
289 { Message => '...', Reason => '...', Recipient => '...', ...},
293 =head3 Private key doesn't exist
295 Template 'Error: no private key' is used to inform the user that
296 he sent an encrypted email, but we have no private key to decrypt
299 In this template C<$Message> object of L<MIME::Entity> class
300 available. It's the message RT received.
304 Template 'Error: bad GnuPG data' used to inform the user that a
305 message he sent has invalid data and can not be handled.
307 There are several reasons for this error, but most of them are data
308 corruption or absence of expected information.
310 In this template C<@Messages> array is available and contains list
313 =head1 FOR DEVELOPERS
315 =head2 Documentation and references
317 * RFC1847 - Security Multiparts for MIME: Multipart/Signed and Multipart/Encrypted.
318 Describes generic MIME security framework, "mulitpart/signed" and "multipart/encrypted"
321 * RFC3156 - MIME Security with Pretty Good Privacy (PGP),
326 # gnupg options supported by GnuPG::Interface
327 # other otions should be handled via extra_args argument
328 my %supported_opt = map { $_ => 1 } qw(
354 our $RE_FILE_EXTENSIONS = qr/pgp|asc/i;
356 # DEV WARNING: always pass all STD* handles to GnuPG interface even if we don't
357 # need them, just pass 'IO::Handle->new()' and then close it after safe_run_child.
358 # we don't want to leak anything into FCGI/Apache/MP handles, this break things.
359 # So code should look like:
360 # my $handles = GnuPG::Handles->new(
361 # stdin => ($handle{'stdin'} = IO::Handle->new()),
362 # stdout => ($handle{'stdout'} = IO::Handle->new()),
363 # stderr => ($handle{'stderr'} = IO::Handle->new()),
367 =head2 SignEncrypt Entity => MIME::Entity, [ Encrypt => 1, Sign => 1, ... ]
369 Signs and/or encrypts an email message with GnuPG utility.
375 During signing you can pass C<Signer> argument to set key we sign with this option
376 overrides gnupg's C<default-key> option. If C<Signer> argument is not provided
377 then address of a message sender is used.
379 As well you can pass C<Passphrase>, but if value is undefined then L</GetPassphrase>
384 During encryption you can pass a C<Recipients> array, otherwise C<To>, C<Cc> and
385 C<Bcc> fields of the message are used to fetch the list.
389 Returns a hash with the following keys:
402 my $entity = $args{'Entity'};
403 if ( $args{'Sign'} && !defined $args{'Signer'} ) {
404 $args{'Signer'} = UseKeyForSigning()
405 || (Email::Address->parse( $entity->head->get( 'From' ) ))[0]->address;
407 if ( $args{'Encrypt'} && !$args{'Recipients'} ) {
409 $args{'Recipients'} = [
410 grep $_ && !$seen{ $_ }++, map $_->address,
411 map Email::Address->parse( $entity->head->get( $_ ) ),
416 my $format = lc RT->Config->Get('GnuPG')->{'OutgoingMessagesFormat'} || 'RFC';
417 if ( $format eq 'inline' ) {
418 return SignEncryptInline( %args );
420 return SignEncryptRFC3156( %args );
424 sub SignEncryptRFC3156 {
438 my $gnupg = GnuPG::Interface->new();
439 my %opt = RT->Config->Get('GnuPGOptions');
441 # handling passphrase in GnuPGOptions
442 $args{'Passphrase'} = delete $opt{'passphrase'}
443 if !defined $args{'Passphrase'};
445 $opt{'digest-algo'} ||= 'SHA1';
446 $opt{'default_key'} = $args{'Signer'}
447 if $args{'Sign'} && $args{'Signer'};
448 $gnupg->options->hash_init(
449 _PrepareGnuPGOptions( %opt ),
451 meta_interactive => 0,
454 my $entity = $args{'Entity'};
456 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
457 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
461 if ( $args{'Sign'} && !$args{'Encrypt'} ) {
462 # required by RFC3156(Ch. 5) and RFC1847(Ch. 2.1)
463 foreach ( grep !$_->is_multipart, $entity->parts_DFS ) {
464 my $tenc = $_->head->mime_encoding;
465 unless ( $tenc =~ m/^(?:7bit|quoted-printable|base64)$/i ) {
466 $_->head->mime_attr( 'Content-Transfer-Encoding'
467 => $_->effective_type =~ m{^text/}? 'quoted-printable': 'base64'
472 my ($handles, $handle_list) = _make_gpg_handles(stdin =>IO::Handle::CRLF->new );
473 my %handle = %$handle_list;
475 $gnupg->passphrase( $args{'Passphrase'} );
478 local $SIG{'CHLD'} = 'DEFAULT';
479 my $pid = safe_run_child { $gnupg->detach_sign( handles => $handles ) };
480 $entity->make_multipart( 'mixed', Force => 1 );
482 local $SIG{'PIPE'} = 'IGNORE';
483 $entity->parts(0)->print( $handle{'stdin'} );
484 close $handle{'stdin'};
489 my @signature = readline $handle{'stdout'};
490 close $handle{'stdout'};
492 $res{'exit_code'} = $?;
493 foreach ( qw(stderr logger status) ) {
494 $res{$_} = do { local $/; readline $handle{$_} };
495 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
498 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
499 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
500 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
501 if ( $err || $res{'exit_code'} ) {
502 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
506 # setup RFC1847(Ch.2.1) requirements
507 my $protocol = 'application/pgp-signature';
508 $entity->head->mime_attr( 'Content-Type' => 'multipart/signed' );
509 $entity->head->mime_attr( 'Content-Type.protocol' => $protocol );
510 $entity->head->mime_attr( 'Content-Type.micalg' => 'pgp-'. lc $opt{'digest-algo'} );
513 Disposition => 'inline',
518 if ( $args{'Encrypt'} ) {
520 $gnupg->options->push_recipients( $_ ) foreach
521 map UseKeyForEncryption($_) || $_,
522 grep !$seen{ $_ }++, map $_->address,
523 map Email::Address->parse( $entity->head->get( $_ ) ),
526 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
527 binmode $tmp_fh, ':raw';
529 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
530 my %handle = %$handle_list;
531 $handles->options( 'stdout' )->{'direct'} = 1;
532 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
535 local $SIG{'CHLD'} = 'DEFAULT';
536 my $pid = safe_run_child { $args{'Sign'}
537 ? $gnupg->sign_and_encrypt( handles => $handles )
538 : $gnupg->encrypt( handles => $handles ) };
539 $entity->make_multipart( 'mixed', Force => 1 );
541 local $SIG{'PIPE'} = 'IGNORE';
542 $entity->parts(0)->print( $handle{'stdin'} );
543 close $handle{'stdin'};
548 $res{'exit_code'} = $?;
549 foreach ( qw(stderr logger status) ) {
550 $res{$_} = do { local $/; readline $handle{$_} };
551 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
554 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
555 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
556 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
558 $res{'message'} = $@? $@: "gpg exited with error code ". ($? >> 8);
562 my $protocol = 'application/pgp-encrypted';
564 $entity->head->mime_attr( 'Content-Type' => 'multipart/encrypted' );
565 $entity->head->mime_attr( 'Content-Type.protocol' => $protocol );
568 Disposition => 'inline',
569 Data => ['Version: 1',''],
573 Type => 'application/octet-stream',
574 Disposition => 'inline',
579 $entity->parts(-1)->bodyhandle->{'_dirty_hack_to_save_a_ref_tmp_fh'} = $tmp_fh;
584 sub SignEncryptInline {
587 my $entity = $args{'Entity'};
590 $entity->make_singlepart;
591 if ( $entity->is_multipart ) {
592 foreach ( $entity->parts ) {
593 %res = SignEncryptInline( @_, Entity => $_ );
594 return %res if $res{'exit_code'};
599 return _SignEncryptTextInline( @_ )
600 if $entity->effective_type =~ /^text\//i;
602 return _SignEncryptAttachmentInline( @_ );
605 sub _SignEncryptTextInline {
618 return unless $args{'Sign'} || $args{'Encrypt'};
620 my $gnupg = GnuPG::Interface->new();
621 my %opt = RT->Config->Get('GnuPGOptions');
623 # handling passphrase in GnupGOptions
624 $args{'Passphrase'} = delete $opt{'passphrase'}
625 if !defined($args{'Passphrase'});
627 $opt{'digest-algo'} ||= 'SHA1';
628 $opt{'default_key'} = $args{'Signer'}
629 if $args{'Sign'} && $args{'Signer'};
630 $gnupg->options->hash_init(
631 _PrepareGnuPGOptions( %opt ),
633 meta_interactive => 0,
636 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
637 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
640 if ( $args{'Encrypt'} ) {
641 $gnupg->options->push_recipients( $_ ) foreach
642 map UseKeyForEncryption($_) || $_,
643 @{ $args{'Recipients'} || [] };
648 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
649 binmode $tmp_fh, ':raw';
651 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
652 my %handle = %$handle_list;
654 $handles->options( 'stdout' )->{'direct'} = 1;
655 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
657 my $entity = $args{'Entity'};
659 local $SIG{'CHLD'} = 'DEFAULT';
660 my $method = $args{'Sign'} && $args{'Encrypt'}
662 : ($args{'Sign'}? 'clearsign': 'encrypt');
663 my $pid = safe_run_child { $gnupg->$method( handles => $handles ) };
665 local $SIG{'PIPE'} = 'IGNORE';
666 $entity->bodyhandle->print( $handle{'stdin'} );
667 close $handle{'stdin'};
671 $res{'exit_code'} = $?;
674 foreach ( qw(stderr logger status) ) {
675 $res{$_} = do { local $/; readline $handle{$_} };
676 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
679 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
680 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
681 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
682 if ( $err || $res{'exit_code'} ) {
683 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
687 $entity->bodyhandle( MIME::Body::File->new( $tmp_fn) );
688 $entity->{'__store_tmp_handle_to_avoid_early_cleanup'} = $tmp_fh;
693 sub _SignEncryptAttachmentInline {
706 return unless $args{'Sign'} || $args{'Encrypt'};
708 my $gnupg = GnuPG::Interface->new();
709 my %opt = RT->Config->Get('GnuPGOptions');
711 # handling passphrase in GnupGOptions
712 $args{'Passphrase'} = delete $opt{'passphrase'}
713 if !defined($args{'Passphrase'});
715 $opt{'digest-algo'} ||= 'SHA1';
716 $opt{'default_key'} = $args{'Signer'}
717 if $args{'Sign'} && $args{'Signer'};
718 $gnupg->options->hash_init(
719 _PrepareGnuPGOptions( %opt ),
721 meta_interactive => 0,
724 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
725 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
728 my $entity = $args{'Entity'};
729 if ( $args{'Encrypt'} ) {
730 $gnupg->options->push_recipients( $_ ) foreach
731 map UseKeyForEncryption($_) || $_,
732 @{ $args{'Recipients'} || [] };
737 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
738 binmode $tmp_fh, ':raw';
740 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
741 my %handle = %$handle_list;
742 $handles->options( 'stdout' )->{'direct'} = 1;
743 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
746 local $SIG{'CHLD'} = 'DEFAULT';
747 my $method = $args{'Sign'} && $args{'Encrypt'}
749 : ($args{'Sign'}? 'detach_sign': 'encrypt');
750 my $pid = safe_run_child { $gnupg->$method( handles => $handles ) };
752 local $SIG{'PIPE'} = 'IGNORE';
753 $entity->bodyhandle->print( $handle{'stdin'} );
754 close $handle{'stdin'};
758 $res{'exit_code'} = $?;
761 foreach ( qw(stderr logger status) ) {
762 $res{$_} = do { local $/; readline $handle{$_} };
763 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
766 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
767 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
768 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
769 if ( $err || $res{'exit_code'} ) {
770 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
774 my $filename = mime_recommended_filename( $entity ) || 'no_name';
775 if ( $args{'Sign'} && !$args{'Encrypt'} ) {
776 $entity->make_multipart;
778 Type => 'application/octet-stream',
780 Filename => "$filename.sig",
781 Disposition => 'attachment',
784 $entity->bodyhandle(MIME::Body::File->new( $tmp_fn) );
785 $entity->effective_type('application/octet-stream');
786 $entity->head->mime_attr( $_ => "$filename.pgp" )
787 foreach (qw(Content-Type.name Content-Disposition.filename));
790 $entity->{'__store_tmp_handle_to_avoid_early_cleanup'} = $tmp_fh;
795 sub SignEncryptContent {
808 return unless $args{'Sign'} || $args{'Encrypt'};
810 my $gnupg = GnuPG::Interface->new();
811 my %opt = RT->Config->Get('GnuPGOptions');
813 # handling passphrase in GnupGOptions
814 $args{'Passphrase'} = delete $opt{'passphrase'}
815 if !defined($args{'Passphrase'});
817 $opt{'digest-algo'} ||= 'SHA1';
818 $opt{'default_key'} = $args{'Signer'}
819 if $args{'Sign'} && $args{'Signer'};
820 $gnupg->options->hash_init(
821 _PrepareGnuPGOptions( %opt ),
823 meta_interactive => 0,
826 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
827 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
830 if ( $args{'Encrypt'} ) {
831 $gnupg->options->push_recipients( $_ ) foreach
832 map UseKeyForEncryption($_) || $_,
833 @{ $args{'Recipients'} || [] };
838 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
839 binmode $tmp_fh, ':raw';
841 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
842 my %handle = %$handle_list;
843 $handles->options( 'stdout' )->{'direct'} = 1;
844 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
847 local $SIG{'CHLD'} = 'DEFAULT';
848 my $method = $args{'Sign'} && $args{'Encrypt'}
850 : ($args{'Sign'}? 'clearsign': 'encrypt');
851 my $pid = safe_run_child { $gnupg->$method( handles => $handles ) };
853 local $SIG{'PIPE'} = 'IGNORE';
854 $handle{'stdin'}->print( ${ $args{'Content'} } );
855 close $handle{'stdin'};
859 $res{'exit_code'} = $?;
862 foreach ( qw(stderr logger status) ) {
863 $res{$_} = do { local $/; readline $handle{$_} };
864 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
867 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
868 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
869 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
870 if ( $err || $res{'exit_code'} ) {
871 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
875 ${ $args{'Content'} } = '';
878 my $status = read $tmp_fh, my $buf, 4*1024;
879 unless ( defined $status ) {
880 $RT::Logger->crit( "couldn't read message: $!" );
881 } elsif ( !$status ) {
884 ${ $args{'Content'} } .= $buf;
890 sub FindProtectedParts {
891 my %args = ( Entity => undef, CheckBody => 1, @_ );
892 my $entity = $args{'Entity'};
894 # inline PGP block, only in singlepart
895 unless ( $entity->is_multipart ) {
896 my $file = ($entity->head->recommended_filename||'') =~ /\.${RE_FILE_EXTENSIONS}$/;
898 my $io = $entity->open('r');
900 $RT::Logger->warning( "Entity of type ". $entity->effective_type ." has no body" );
903 while ( defined($_ = $io->getline) ) {
904 next unless /^-----BEGIN PGP (SIGNED )?MESSAGE-----/;
905 my $type = $1? 'signed': 'encrypted';
906 $RT::Logger->debug("Found $type inline part");
909 Format => !$file || $type eq 'signed'? 'Inline' : 'Attachment',
917 # RFC3156, multipart/{signed,encrypted}
918 if ( ( my $type = $entity->effective_type ) =~ /^multipart\/(?:encrypted|signed)$/ ) {
919 unless ( $entity->parts == 2 ) {
920 $RT::Logger->error( "Encrypted or signed entity must has two subparts. Skipped" );
924 my $protocol = $entity->head->mime_attr( 'Content-Type.protocol' );
925 unless ( $protocol ) {
926 $RT::Logger->error( "Entity is '$type', but has no protocol defined. Skipped" );
930 if ( $type eq 'multipart/encrypted' ) {
931 unless ( $protocol eq 'application/pgp-encrypted' ) {
932 $RT::Logger->info( "Skipping protocol '$protocol', only 'application/pgp-encrypted' is supported" );
935 $RT::Logger->debug("Found encrypted according to RFC3156 part");
940 Data => $entity->parts(1),
941 Info => $entity->parts(0),
944 unless ( $protocol eq 'application/pgp-signature' ) {
945 $RT::Logger->info( "Skipping protocol '$protocol', only 'application/pgp-signature' is supported" );
948 $RT::Logger->debug("Found signed according to RFC3156 part");
953 Data => $entity->parts(0),
954 Signature => $entity->parts(1),
959 # attachments signed with signature in another part
961 foreach my $i ( 0 .. $entity->parts - 1 ) {
962 my $part = $entity->parts($i);
964 # we can not associate a signature within an attachment
966 my $fname = $part->head->recommended_filename;
969 if ( $part->effective_type eq 'application/pgp-signature' ) {
970 push @file_indices, $i;
972 elsif ( $fname =~ /\.sig$/i && $part->effective_type eq 'application/octet-stream' ) {
973 push @file_indices, $i;
978 foreach my $i ( @file_indices ) {
979 my $sig_part = $entity->parts($i);
980 $skip{"$sig_part"}++;
981 my $sig_name = $sig_part->head->recommended_filename;
982 my ($file_name) = $sig_name =~ /^(.*?)(?:\.sig)?$/;
984 my ($data_part_idx) =
985 grep $file_name eq ($entity->parts($_)->head->recommended_filename||''),
986 grep $sig_part ne $entity->parts($_),
987 0 .. $entity->parts - 1;
988 unless ( defined $data_part_idx ) {
989 $RT::Logger->error("Found $sig_name attachment, but didn't find $file_name");
992 my $data_part_in = $entity->parts($data_part_idx);
994 $skip{"$data_part_in"}++;
995 $RT::Logger->debug("Found signature (in '$sig_name') of attachment '$file_name'");
998 Format => 'Attachment',
1000 Data => $data_part_in,
1001 Signature => $sig_part,
1005 # attachments with inline encryption
1006 my @encrypted_indices =
1007 grep {($entity->parts($_)->head->recommended_filename || '') =~ /\.${RE_FILE_EXTENSIONS}$/}
1008 0 .. $entity->parts - 1;
1010 foreach my $i ( @encrypted_indices ) {
1011 my $part = $entity->parts($i);
1013 $RT::Logger->debug("Found encrypted attachment '". $part->head->recommended_filename ."'");
1015 Type => 'encrypted',
1016 Format => 'Attachment',
1022 push @res, FindProtectedParts( Entity => $_ )
1023 foreach grep !$skip{"$_"}, $entity->parts;
1028 =head2 VerifyDecrypt Entity => undef, [ Detach => 1, Passphrase => undef, SetStatus => 1 ]
1040 my @protected = FindProtectedParts( Entity => $args{'Entity'} );
1042 # XXX: detaching may brake nested signatures
1043 foreach my $item( grep $_->{'Type'} eq 'signed', @protected ) {
1045 if ( $item->{'Format'} eq 'RFC3156' ) {
1046 push @res, { VerifyRFC3156( %$item, SetStatus => $args{'SetStatus'} ) };
1047 if ( $args{'Detach'} ) {
1048 $item->{'Top'}->parts( [ $item->{'Data'} ] );
1049 $item->{'Top'}->make_singlepart;
1051 $status_on = $item->{'Top'};
1052 } elsif ( $item->{'Format'} eq 'Inline' ) {
1053 push @res, { VerifyInline( %$item ) };
1054 $status_on = $item->{'Data'};
1055 } elsif ( $item->{'Format'} eq 'Attachment' ) {
1056 push @res, { VerifyAttachment( %$item ) };
1057 if ( $args{'Detach'} ) {
1058 $item->{'Top'}->parts( [
1059 grep "$_" ne $item->{'Signature'}, $item->{'Top'}->parts
1061 $item->{'Top'}->make_singlepart;
1063 $status_on = $item->{'Data'};
1065 if ( $args{'SetStatus'} || $args{'AddStatus'} ) {
1066 my $method = $args{'AddStatus'} ? 'add' : 'set';
1067 $status_on->head->$method(
1068 'X-RT-GnuPG-Status' => $res[-1]->{'status'}
1072 foreach my $item( grep $_->{'Type'} eq 'encrypted', @protected ) {
1074 if ( $item->{'Format'} eq 'RFC3156' ) {
1075 push @res, { DecryptRFC3156( %$item ) };
1076 $status_on = $item->{'Top'};
1077 } elsif ( $item->{'Format'} eq 'Inline' ) {
1078 push @res, { DecryptInline( %$item ) };
1079 $status_on = $item->{'Data'};
1080 } elsif ( $item->{'Format'} eq 'Attachment' ) {
1081 push @res, { DecryptAttachment( %$item ) };
1082 $status_on = $item->{'Data'};
1084 if ( $args{'SetStatus'} || $args{'AddStatus'} ) {
1085 my $method = $args{'AddStatus'} ? 'add' : 'set';
1086 $status_on->head->$method(
1087 'X-RT-GnuPG-Status' => $res[-1]->{'status'}
1094 sub VerifyInline { return DecryptInline( @_ ) }
1096 sub VerifyAttachment {
1097 my %args = ( Data => undef, Signature => undef, Top => undef, @_ );
1099 my $gnupg = GnuPG::Interface->new();
1100 my %opt = RT->Config->Get('GnuPGOptions');
1101 $opt{'digest-algo'} ||= 'SHA1';
1102 $gnupg->options->hash_init(
1103 _PrepareGnuPGOptions( %opt ),
1104 meta_interactive => 0,
1107 foreach ( $args{'Data'}, $args{'Signature'} ) {
1108 next unless $_->bodyhandle->is_encoded;
1110 require RT::EmailParser;
1111 RT::EmailParser->_DecodeBody($_);
1114 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1115 binmode $tmp_fh, ':raw';
1116 $args{'Data'}->bodyhandle->print( $tmp_fh );
1119 my ($handles, $handle_list) = _make_gpg_handles();
1120 my %handle = %$handle_list;
1124 local $SIG{'CHLD'} = 'DEFAULT';
1125 my $pid = safe_run_child { $gnupg->verify(
1126 handles => $handles, command_args => [ '-', $tmp_fn ]
1129 local $SIG{'PIPE'} = 'IGNORE';
1130 $args{'Signature'}->bodyhandle->print( $handle{'stdin'} );
1131 close $handle{'stdin'};
1135 $res{'exit_code'} = $?;
1136 foreach ( qw(stderr logger status) ) {
1137 $res{$_} = do { local $/; readline $handle{$_} };
1138 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1141 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1142 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1143 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1145 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1151 my %args = ( Data => undef, Signature => undef, Top => undef, @_ );
1153 my $gnupg = GnuPG::Interface->new();
1154 my %opt = RT->Config->Get('GnuPGOptions');
1155 $opt{'digest-algo'} ||= 'SHA1';
1156 $gnupg->options->hash_init(
1157 _PrepareGnuPGOptions( %opt ),
1158 meta_interactive => 0,
1161 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1162 binmode $tmp_fh, ':raw:eol(CRLF?)';
1163 $args{'Data'}->print( $tmp_fh );
1166 my ($handles, $handle_list) = _make_gpg_handles();
1167 my %handle = %$handle_list;
1171 local $SIG{'CHLD'} = 'DEFAULT';
1172 my $pid = safe_run_child { $gnupg->verify(
1173 handles => $handles, command_args => [ '-', $tmp_fn ]
1176 local $SIG{'PIPE'} = 'IGNORE';
1177 $args{'Signature'}->bodyhandle->print( $handle{'stdin'} );
1178 close $handle{'stdin'};
1182 $res{'exit_code'} = $?;
1183 foreach ( qw(stderr logger status) ) {
1184 $res{$_} = do { local $/; readline $handle{$_} };
1185 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1188 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1189 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1190 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1192 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1197 sub DecryptRFC3156 {
1202 Passphrase => undef,
1206 my $gnupg = GnuPG::Interface->new();
1207 my %opt = RT->Config->Get('GnuPGOptions');
1209 # handling passphrase in GnupGOptions
1210 $args{'Passphrase'} = delete $opt{'passphrase'}
1211 if !defined($args{'Passphrase'});
1213 $opt{'digest-algo'} ||= 'SHA1';
1214 $gnupg->options->hash_init(
1215 _PrepareGnuPGOptions( %opt ),
1216 meta_interactive => 0,
1219 if ( $args{'Data'}->bodyhandle->is_encoded ) {
1220 require RT::EmailParser;
1221 RT::EmailParser->_DecodeBody($args{'Data'});
1224 $args{'Passphrase'} = GetPassphrase()
1225 unless defined $args{'Passphrase'};
1227 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1228 binmode $tmp_fh, ':raw';
1230 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
1231 my %handle = %$handle_list;
1232 $handles->options( 'stdout' )->{'direct'} = 1;
1236 local $SIG{'CHLD'} = 'DEFAULT';
1237 $gnupg->passphrase( $args{'Passphrase'} );
1238 my $pid = safe_run_child { $gnupg->decrypt( handles => $handles ) };
1240 local $SIG{'PIPE'} = 'IGNORE';
1241 $args{'Data'}->bodyhandle->print( $handle{'stdin'} );
1242 close $handle{'stdin'}
1247 $res{'exit_code'} = $?;
1248 foreach ( qw(stderr logger status) ) {
1249 $res{$_} = do { local $/; readline $handle{$_} };
1250 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1253 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1254 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1255 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1257 # if the decryption is fine but the signature is bad, then without this
1258 # status check we lose the decrypted text
1259 # XXX: add argument to the function to control this check
1260 if ( $res{'status'} !~ /DECRYPTION_OKAY/ ) {
1262 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1268 my $parser = RT::EmailParser->new();
1269 my $decrypted = $parser->ParseMIMEEntityFromFileHandle( $tmp_fh, 0 );
1270 $decrypted->{'__store_link_to_object_to_avoid_early_cleanup'} = $parser;
1271 $args{'Top'}->parts( [] );
1272 $args{'Top'}->add_part( $decrypted );
1273 $args{'Top'}->make_singlepart;
1280 Passphrase => undef,
1284 my $gnupg = GnuPG::Interface->new();
1285 my %opt = RT->Config->Get('GnuPGOptions');
1287 # handling passphrase in GnuPGOptions
1288 $args{'Passphrase'} = delete $opt{'passphrase'}
1289 if !defined($args{'Passphrase'});
1291 $opt{'digest-algo'} ||= 'SHA1';
1292 $gnupg->options->hash_init(
1293 _PrepareGnuPGOptions( %opt ),
1294 meta_interactive => 0,
1297 if ( $args{'Data'}->bodyhandle->is_encoded ) {
1298 require RT::EmailParser;
1299 RT::EmailParser->_DecodeBody($args{'Data'});
1302 $args{'Passphrase'} = GetPassphrase()
1303 unless defined $args{'Passphrase'};
1305 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1306 binmode $tmp_fh, ':raw';
1308 my $io = $args{'Data'}->open('r');
1310 die "Entity has no body, never should happen";
1315 my ($had_literal, $in_block) = ('', 0);
1316 my ($block_fh, $block_fn) = File::Temp::tempfile( UNLINK => 1 );
1317 binmode $block_fh, ':raw';
1319 while ( defined(my $str = $io->getline) ) {
1320 if ( $in_block && $str =~ /^-----END PGP (?:MESSAGE|SIGNATURE)-----/ ) {
1321 print $block_fh $str;
1323 next if $in_block > 0;
1325 seek $block_fh, 0, 0;
1327 my ($res_fh, $res_fn);
1328 ($res_fh, $res_fn, %res) = _DecryptInlineBlock(
1331 BlockHandle => $block_fh,
1333 return %res unless $res_fh;
1335 print $tmp_fh "-----BEGIN OF PGP PROTECTED PART-----\n" if $had_literal;
1336 while (my $buf = <$res_fh> ) {
1339 print $tmp_fh "-----END OF PART-----\n" if $had_literal;
1341 ($block_fh, $block_fn) = File::Temp::tempfile( UNLINK => 1 );
1342 binmode $block_fh, ':raw';
1345 elsif ( $str =~ /^-----BEGIN PGP (SIGNED )?MESSAGE-----/ ) {
1347 print $block_fh $str;
1349 elsif ( $in_block ) {
1350 print $block_fh $str;
1354 $had_literal = 1 if /\S/s;
1360 # we're still in a block, this not bad not good. let's try to
1361 # decrypt what we have, it can be just missing -----END PGP...
1362 seek $block_fh, 0, 0;
1364 my ($res_fh, $res_fn);
1365 ($res_fh, $res_fn, %res) = _DecryptInlineBlock(
1368 BlockHandle => $block_fh,
1370 return %res unless $res_fh;
1372 print $tmp_fh "-----BEGIN OF PGP PROTECTED PART-----\n" if $had_literal;
1373 while (my $buf = <$res_fh> ) {
1376 print $tmp_fh "-----END OF PART-----\n" if $had_literal;
1380 $args{'Data'}->bodyhandle(MIME::Body::File->new( $tmp_fn ));
1381 $args{'Data'}->{'__store_tmp_handle_to_avoid_early_cleanup'} = $tmp_fh;
1385 sub _DecryptInlineBlock {
1388 BlockHandle => undef,
1389 Passphrase => undef,
1392 my $gnupg = $args{'GnuPG'};
1394 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1395 binmode $tmp_fh, ':raw';
1397 my ($handles, $handle_list) = _make_gpg_handles(
1398 stdin => $args{'BlockHandle'},
1400 my %handle = %$handle_list;
1401 $handles->options( 'stdout' )->{'direct'} = 1;
1402 $handles->options( 'stdin' )->{'direct'} = 1;
1406 local $SIG{'CHLD'} = 'DEFAULT';
1407 $gnupg->passphrase( $args{'Passphrase'} );
1408 my $pid = safe_run_child { $gnupg->decrypt( handles => $handles ) };
1411 $res{'exit_code'} = $?;
1412 foreach ( qw(stderr logger status) ) {
1413 $res{$_} = do { local $/; readline $handle{$_} };
1414 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1417 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1418 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1419 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1421 # if the decryption is fine but the signature is bad, then without this
1422 # status check we lose the decrypted text
1423 # XXX: add argument to the function to control this check
1424 if ( $res{'status'} !~ /DECRYPTION_OKAY/ ) {
1426 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1427 return (undef, undef, %res);
1432 return ($tmp_fh, $tmp_fn, %res);
1435 sub DecryptAttachment {
1439 Passphrase => undef,
1443 my $gnupg = GnuPG::Interface->new();
1444 my %opt = RT->Config->Get('GnuPGOptions');
1446 # handling passphrase in GnuPGOptions
1447 $args{'Passphrase'} = delete $opt{'passphrase'}
1448 if !defined($args{'Passphrase'});
1450 $opt{'digest-algo'} ||= 'SHA1';
1451 $gnupg->options->hash_init(
1452 _PrepareGnuPGOptions( %opt ),
1453 meta_interactive => 0,
1456 if ( $args{'Data'}->bodyhandle->is_encoded ) {
1457 require RT::EmailParser;
1458 RT::EmailParser->_DecodeBody($args{'Data'});
1461 $args{'Passphrase'} = GetPassphrase()
1462 unless defined $args{'Passphrase'};
1464 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1465 binmode $tmp_fh, ':raw';
1466 $args{'Data'}->bodyhandle->print( $tmp_fh );
1469 my ($res_fh, $res_fn, %res) = _DecryptInlineBlock(
1472 BlockHandle => $tmp_fh,
1474 return %res unless $res_fh;
1476 $args{'Data'}->bodyhandle(MIME::Body::File->new($res_fn) );
1477 $args{'Data'}->{'__store_tmp_handle_to_avoid_early_cleanup'} = $res_fh;
1479 my $head = $args{'Data'}->head;
1481 # we can not trust original content type
1482 # TODO: and don't have way to detect, so we just use octet-stream
1483 # some clients may send .asc files (encryped) as text/plain
1484 $head->mime_attr( "Content-Type" => 'application/octet-stream' );
1486 my $filename = $head->recommended_filename;
1487 $filename =~ s/\.${RE_FILE_EXTENSIONS}$//i;
1488 $head->mime_attr( $_ => $filename )
1489 foreach (qw(Content-Type.name Content-Disposition.filename));
1494 sub DecryptContent {
1497 Passphrase => undef,
1501 my $gnupg = GnuPG::Interface->new();
1502 my %opt = RT->Config->Get('GnuPGOptions');
1504 # handling passphrase in GnupGOptions
1505 $args{'Passphrase'} = delete $opt{'passphrase'}
1506 if !defined($args{'Passphrase'});
1508 $opt{'digest-algo'} ||= 'SHA1';
1509 $gnupg->options->hash_init(
1510 _PrepareGnuPGOptions( %opt ),
1511 meta_interactive => 0,
1514 $args{'Passphrase'} = GetPassphrase()
1515 unless defined $args{'Passphrase'};
1517 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1518 binmode $tmp_fh, ':raw';
1520 my ($handles, $handle_list) = _make_gpg_handles(
1522 my %handle = %$handle_list;
1523 $handles->options( 'stdout' )->{'direct'} = 1;
1527 local $SIG{'CHLD'} = 'DEFAULT';
1528 $gnupg->passphrase( $args{'Passphrase'} );
1529 my $pid = safe_run_child { $gnupg->decrypt( handles => $handles ) };
1531 local $SIG{'PIPE'} = 'IGNORE';
1532 print { $handle{'stdin'} } ${ $args{'Content'} };
1533 close $handle{'stdin'};
1538 $res{'exit_code'} = $?;
1539 foreach ( qw(stderr logger status) ) {
1540 $res{$_} = do { local $/; readline $handle{$_} };
1541 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1544 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1545 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1546 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1548 # if the decryption is fine but the signature is bad, then without this
1549 # status check we lose the decrypted text
1550 # XXX: add argument to the function to control this check
1551 if ( $res{'status'} !~ /DECRYPTION_OKAY/ ) {
1553 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1558 ${ $args{'Content'} } = '';
1561 my $status = read $tmp_fh, my $buf, 4*1024;
1562 unless ( defined $status ) {
1563 $RT::Logger->crit( "couldn't read message: $!" );
1564 } elsif ( !$status ) {
1567 ${ $args{'Content'} } .= $buf;
1573 =head2 GetPassphrase [ Address => undef ]
1575 Returns passphrase, called whenever it's required with Address as a named argument.
1580 my %args = ( Address => undef, @_ );
1586 Takes a string containing output of gnupg status stream. Parses it and returns
1587 array of hashes. Each element of array is a hash ref and represents line or
1588 group of lines in the status message.
1590 All hashes have Operation, Status and Message elements.
1596 Classification of operations gnupg performs. Now we have support
1597 for Sign, Encrypt, Decrypt, Verify, PassphraseCheck, RecipientsCheck and Data
1602 Informs about success. Value is 'DONE' on success, other values means that
1603 an operation failed, for example 'ERROR', 'BAD', 'MISSING' and may be other.
1607 User friendly message.
1611 This parser is based on information from GnuPG distribution.
1615 my %REASON_CODE_TO_TEXT = (
1617 1 => "No armored data",
1618 2 => "Expected a packet, but did not found one",
1619 3 => "Invalid packet found",
1620 4 => "Signature expected, but not found",
1623 0 => "No specific reason given",
1625 2 => "Ambigious specification",
1626 3 => "Wrong key usage",
1629 6 => "No CRL known",
1631 8 => "Policy mismatch",
1632 9 => "Not a secret key",
1633 10 => "Key not trusted",
1636 0 => 'not specified',
1637 4 => 'unknown algorithm',
1638 9 => 'missing public key',
1642 sub ReasonCodeToText {
1643 my $keyword = shift;
1645 return $REASON_CODE_TO_TEXT{ $keyword }{ $code }
1646 if exists $REASON_CODE_TO_TEXT{ $keyword }{ $code };
1650 my %simple_keyword = (
1652 Operation => 'RecipientsCheck',
1654 Message => 'No recipients',
1657 Operation => 'Data',
1659 Message => 'Unexpected data has been encountered',
1662 Operation => 'Data',
1664 Message => 'The ASCII armor is corrupted',
1669 my %parse_keyword = map { $_ => 1 } qw(
1671 SIG_CREATED GOODSIG BADSIG ERRSIG
1673 DECRYPTION_FAILED DECRYPTION_OKAY
1674 BAD_PASSPHRASE GOOD_PASSPHRASE
1676 NO_RECP INV_RECP NODATA UNEXPECTED
1679 # keywords we ignore without any messages as we parse them using other
1680 # keywords as starting point or just ignore as they are useless for us
1681 my %ignore_keyword = map { $_ => 1 } qw(
1682 NEED_PASSPHRASE MISSING_PASSPHRASE BEGIN_SIGNING PLAINTEXT PLAINTEXT_LENGTH
1683 BEGIN_ENCRYPTION SIG_ID VALIDSIG
1684 ENC_TO BEGIN_DECRYPTION END_DECRYPTION GOODMDC
1685 TRUST_UNDEFINED TRUST_NEVER TRUST_MARGINAL TRUST_FULLY TRUST_ULTIMATE
1690 return () unless $status;
1693 while ( $status =~ /\[GNUPG:\]\s*(.*?)(?=\[GNUPG:\]|\z)/igms ) {
1694 push @status, $1; $status[-1] =~ s/\s+/ /g; $status[-1] =~ s/\s+$//;
1696 $status = join "\n", @status;
1700 my (%user_hint, $latest_user_main_key);
1701 for ( my $i = 0; $i < @status; $i++ ) {
1702 my $line = $status[$i];
1703 my ($keyword, $args) = ($line =~ /^(\S+)\s*(.*)$/s);
1704 if ( $simple_keyword{ $keyword } ) {
1705 push @res, $simple_keyword{ $keyword };
1706 $res[-1]->{'Keyword'} = $keyword;
1709 unless ( $parse_keyword{ $keyword } ) {
1710 $RT::Logger->warning("Skipped $keyword") unless $ignore_keyword{ $keyword };
1714 if ( $keyword eq 'USERID_HINT' ) {
1715 my %tmp = _ParseUserHint($status, $line);
1716 $latest_user_main_key = $tmp{'MainKey'};
1717 if ( $user_hint{ $tmp{'MainKey'} } ) {
1718 while ( my ($k, $v) = each %tmp ) {
1719 $user_hint{ $tmp{'MainKey'} }->{$k} = $v;
1722 $user_hint{ $tmp{'MainKey'} } = \%tmp;
1726 elsif ( $keyword eq 'BAD_PASSPHRASE' || $keyword eq 'GOOD_PASSPHRASE' ) {
1729 Operation => 'PassphraseCheck',
1730 Status => $keyword eq 'BAD_PASSPHRASE'? 'BAD' : 'DONE',
1733 $res{'Status'} = 'MISSING' if $status[ $i - 1 ] =~ /^MISSING_PASSPHRASE/;
1734 foreach my $line ( reverse @status[ 0 .. $i-1 ] ) {
1735 next unless $line =~ /^NEED_PASSPHRASE\s+(\S+)\s+(\S+)\s+(\S+)/;
1736 next if $key_id && $2 ne $key_id;
1737 @res{'MainKey', 'Key', 'KeyType'} = ($1, $2, $3);
1740 $res{'Message'} = ucfirst( lc( $res{'Status'} eq 'DONE'? 'GOOD': $res{'Status'} ) ) .' passphrase';
1741 $res{'User'} = ( $user_hint{ $res{'MainKey'} } ||= {} ) if $res{'MainKey'};
1742 if ( exists $res{'User'}->{'EmailAddress'} ) {
1743 $res{'Message'} .= ' for '. $res{'User'}->{'EmailAddress'};
1745 $res{'Message'} .= " for '0x$key_id'";
1749 elsif ( $keyword eq 'END_ENCRYPTION' ) {
1751 Operation => 'Encrypt',
1753 Message => 'Data has been encrypted',
1755 foreach my $line ( reverse @status[ 0 .. $i-1 ] ) {
1756 next unless $line =~ /^BEGIN_ENCRYPTION\s+(\S+)\s+(\S+)/;
1757 @res{'MdcMethod', 'SymAlgo'} = ($1, $2);
1762 elsif ( $keyword eq 'DECRYPTION_FAILED' || $keyword eq 'DECRYPTION_OKAY' ) {
1763 my %res = ( Operation => 'Decrypt' );
1764 @res{'Status', 'Message'} =
1765 $keyword eq 'DECRYPTION_FAILED'
1766 ? ('ERROR', 'Decryption failed')
1767 : ('DONE', 'Decryption process succeeded');
1769 foreach my $line ( reverse @status[ 0 .. $i-1 ] ) {
1770 next unless $line =~ /^ENC_TO\s+(\S+)\s+(\S+)\s+(\S+)/;
1771 my ($key, $alg, $key_length) = ($1, $2, $3);
1773 my %encrypted_to = (
1774 Message => "The message is encrypted to '0x$key'",
1775 User => ( $user_hint{ $key } ||= {} ),
1777 KeyLength => $key_length,
1781 push @{ $res{'EncryptedTo'} ||= [] }, \%encrypted_to;
1786 elsif ( $keyword eq 'NO_SECKEY' || $keyword eq 'NO_PUBKEY' ) {
1787 my ($key) = split /\s+/, $args;
1788 my $type = $keyword eq 'NO_SECKEY'? 'secret': 'public';
1790 Operation => 'KeyCheck',
1791 Status => 'MISSING',
1792 Message => ucfirst( $type ) ." key '0x$key' is not available",
1796 $res{'User'} = ( $user_hint{ $key } ||= {} );
1797 $res{'User'}{ ucfirst( $type ). 'KeyMissing' } = 1;
1800 # GOODSIG, BADSIG, VALIDSIG, TRUST_*
1801 elsif ( $keyword eq 'GOODSIG' ) {
1803 Operation => 'Verify',
1805 Message => 'The signature is good',
1807 @res{qw(Key UserString)} = split /\s+/, $args, 2;
1808 $res{'Message'} .= ', signed by '. $res{'UserString'};
1810 foreach my $line ( @status[ $i .. $#status ] ) {
1811 next unless $line =~ /^TRUST_(\S+)/;
1815 $res{'Message'} .= ', trust level is '. lc( $res{'Trust'} || 'unknown');
1817 foreach my $line ( @status[ $i .. $#status ] ) {
1818 next unless $line =~ /^VALIDSIG\s+(.*)/;
1831 ) } = split /\s+/, $1, 10;
1836 elsif ( $keyword eq 'BADSIG' ) {
1838 Operation => 'Verify',
1840 Message => 'The signature has not been verified okay',
1842 @res{qw(Key UserString)} = split /\s+/, $args, 2;
1845 elsif ( $keyword eq 'ERRSIG' ) {
1847 Operation => 'Verify',
1849 Message => 'Not possible to check the signature',
1851 @res{qw(Key PubkeyAlgo HashAlgo Class Timestamp ReasonCode Other)}
1852 = split /\s+/, $args, 7;
1854 $res{'Reason'} = ReasonCodeToText( $keyword, $res{'ReasonCode'} );
1855 $res{'Message'} .= ", the reason is ". $res{'Reason'};
1859 elsif ( $keyword eq 'SIG_CREATED' ) {
1860 # SIG_CREATED <type> <pubkey algo> <hash algo> <class> <timestamp> <key fpr>
1861 my @props = split /\s+/, $args;
1863 Operation => 'Sign',
1865 Message => "Signed message",
1867 PubKeyAlgo => $props[1],
1868 HashKeyAlgo => $props[2],
1870 Timestamp => $props[4],
1871 KeyFingerprint => $props[5],
1872 User => $user_hint{ $latest_user_main_key },
1874 $res[-1]->{Message} .= ' by '. $user_hint{ $latest_user_main_key }->{'EmailAddress'}
1875 if $user_hint{ $latest_user_main_key };
1877 elsif ( $keyword eq 'INV_RECP' ) {
1878 my ($rcode, $recipient) = split /\s+/, $args, 2;
1879 my $reason = ReasonCodeToText( $keyword, $rcode );
1881 Operation => 'RecipientsCheck',
1883 Message => "Recipient '$recipient' is unusable, the reason is '$reason'",
1884 Recipient => $recipient,
1885 ReasonCode => $rcode,
1889 elsif ( $keyword eq 'NODATA' ) {
1890 my $rcode = (split /\s+/, $args)[0];
1891 my $reason = ReasonCodeToText( $keyword, $rcode );
1893 Operation => 'Data',
1895 Message => "No data has been found. The reason is '$reason'",
1896 ReasonCode => $rcode,
1901 $RT::Logger->warning("Keyword $keyword is unknown");
1904 $res[-1]{'Keyword'} = $keyword if @res && !$res[-1]{'Keyword'};
1909 sub _ParseUserHint {
1910 my ($status, $hint) = (@_);
1911 my ($main_key_id, $user_str) = ($hint =~ /^USERID_HINT\s+(\S+)\s+(.*)$/);
1912 return () unless $main_key_id;
1914 MainKey => $main_key_id,
1915 String => $user_str,
1916 EmailAddress => (map $_->address, Email::Address->parse( $user_str ))[0],
1920 sub _PrepareGnuPGOptions {
1922 my %res = map { lc $_ => $opt{ $_ } } grep $supported_opt{ lc $_ }, keys %opt;
1923 $res{'extra_args'} ||= [];
1924 foreach my $o ( grep !$supported_opt{ lc $_ }, keys %opt ) {
1925 push @{ $res{'extra_args'} }, '--'. lc $o;
1926 push @{ $res{'extra_args'} }, $opt{ $o }
1927 if defined $opt{ $o };
1934 # one arg -> return preferred key
1936 sub UseKeyForEncryption {
1939 } elsif ( @_ > 1 ) {
1941 $key{ lc($_) } = delete $key{ $_ } foreach grep lc ne $_, keys %key;
1943 return $key{ $_[0] };
1948 =head2 UseKeyForSigning
1950 Returns or sets identifier of the key that should be used for signing.
1952 Returns the current value when called without arguments.
1954 Sets new value when called with one argument and unsets if it's undef.
1959 sub UseKeyForSigning {
1966 =head2 GetKeysForEncryption
1968 Takes identifier and returns keys suitable for encryption.
1970 B<Note> that keys for which trust level is not set are
1975 sub GetKeysForEncryption {
1977 my %res = GetKeysInfo( $key_id, 'public', @_ );
1978 return %res if $res{'exit_code'};
1979 return %res unless $res{'info'};
1981 foreach my $key ( splice @{ $res{'info'} } ) {
1982 # skip disabled keys
1983 next if $key->{'Capabilities'} =~ /D/;
1984 # skip keys not suitable for encryption
1985 next unless $key->{'Capabilities'} =~ /e/i;
1986 # skip disabled, expired, revoke and keys with no trust,
1987 # but leave keys with unknown trust level
1988 next if $key->{'TrustLevel'} < 0;
1990 push @{ $res{'info'} }, $key;
1992 delete $res{'info'} unless @{ $res{'info'} };
1996 sub GetKeysForSigning {
1998 return GetKeysInfo( $key_id, 'private', @_ );
2001 sub CheckRecipients {
2002 my @recipients = (@_);
2004 my ($status, @issues) = (1, ());
2007 foreach my $address ( grep !$seen{ lc $_ }++, map $_->address, @recipients ) {
2008 my %res = GetKeysForEncryption( $address );
2009 if ( $res{'info'} && @{ $res{'info'} } == 1 && $res{'info'}[0]{'TrustLevel'} > 0 ) {
2010 # good, one suitable and trusted key
2013 my $user = RT::User->new( RT->SystemUser );
2014 $user->LoadByEmail( $address );
2015 # it's possible that we have no User record with the email
2016 $user = undef unless $user->id;
2018 if ( my $fpr = UseKeyForEncryption( $address ) ) {
2019 if ( $res{'info'} && @{ $res{'info'} } ) {
2021 grep lc $_->{'Fingerprint'} eq lc $fpr,
2022 grep $_->{'TrustLevel'} > 0,
2028 EmailAddress => $address,
2029 $user? (User => $user) : (),
2032 $issue{'Message'} = "Selected key either is not trusted or doesn't exist anymore."; #loc
2033 push @issues, \%issue;
2038 $prefered_key = $user->PreferredKey if $user;
2039 #XXX: prefered key is not yet implemented...
2044 EmailAddress => $address,
2045 $user? (User => $user) : (),
2049 unless ( $res{'info'} && @{ $res{'info'} } ) {
2051 $issue{'Message'} = "There is no key suitable for encryption."; #loc
2053 elsif ( @{ $res{'info'} } == 1 && !$res{'info'}[0]{'TrustLevel'} ) {
2055 $issue{'Message'} = "There is one suitable key, but trust level is not set."; #loc
2059 $issue{'Message'} = "There are several keys suitable for encryption."; #loc
2061 push @issues, \%issue;
2063 return ($status, @issues);
2066 sub GetPublicKeyInfo {
2067 return GetKeyInfo( shift, 'public', @_ );
2070 sub GetPrivateKeyInfo {
2071 return GetKeyInfo( shift, 'private', @_ );
2075 my %res = GetKeysInfo(@_);
2076 $res{'info'} = $res{'info'}->[0];
2082 my $type = shift || 'public';
2086 return (exit_code => 0) unless $force;
2089 my $gnupg = GnuPG::Interface->new();
2090 my %opt = RT->Config->Get('GnuPGOptions');
2091 $opt{'digest-algo'} ||= 'SHA1';
2092 $opt{'with-colons'} = undef; # parseable format
2093 $opt{'fingerprint'} = undef; # show fingerprint
2094 $opt{'fixed-list-mode'} = undef; # don't merge uid with keys
2095 $gnupg->options->hash_init(
2096 _PrepareGnuPGOptions( %opt ),
2098 meta_interactive => 0,
2103 my ($handles, $handle_list) = _make_gpg_handles();
2104 my %handle = %$handle_list;
2107 local $SIG{'CHLD'} = 'DEFAULT';
2108 my $method = $type eq 'private'? 'list_secret_keys': 'list_public_keys';
2109 my $pid = safe_run_child { $gnupg->$method( handles => $handles, $email? (command_args => $email) : () ) };
2110 close $handle{'stdin'};
2114 my @info = readline $handle{'stdout'};
2115 close $handle{'stdout'};
2117 $res{'exit_code'} = $?;
2118 foreach ( qw(stderr logger status) ) {
2119 $res{$_} = do { local $/; readline $handle{$_} };
2120 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
2123 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
2124 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
2125 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
2127 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
2131 @info = ParseKeysInfo( @info );
2132 $res{'info'} = \@info;
2139 my %gpg_opt = RT->Config->Get('GnuPGOptions');
2142 foreach my $line( @lines ) {
2145 ($tag, $line) = split /:/, $line, 2;
2146 if ( $tag eq 'pub' ) {
2149 TrustChar KeyLength Algorithm Key
2150 Created Expire Empty OwnerTrustChar
2151 Empty Empty Capabilities Other
2152 ) } = split /:/, $line, 12;
2154 # workaround gnupg's wierd behaviour, --list-keys command report calculated trust levels
2155 # for any model except 'always', so you can change models and see changes, but not for 'always'
2156 # we try to handle it in a simple way - we set ultimate trust for any key with trust
2157 # level >= 0 if trust model is 'always'
2159 $always_trust = 1 if exists $gpg_opt{'always-trust'};
2160 $always_trust = 1 if exists $gpg_opt{'trust-model'} && $gpg_opt{'trust-model'} eq 'always';
2161 @info{qw(Trust TrustTerse TrustLevel)} =
2162 _ConvertTrustChar( $info{'TrustChar'} );
2163 if ( $always_trust && $info{'TrustLevel'} >= 0 ) {
2164 @info{qw(Trust TrustTerse TrustLevel)} =
2165 _ConvertTrustChar( 'u' );
2168 @info{qw(OwnerTrust OwnerTrustTerse OwnerTrustLevel)} =
2169 _ConvertTrustChar( $info{'OwnerTrustChar'} );
2170 $info{ $_ } = _ParseDate( $info{ $_ } )
2171 foreach qw(Created Expire);
2174 elsif ( $tag eq 'sec' ) {
2177 Empty KeyLength Algorithm Key
2178 Created Expire Empty OwnerTrustChar
2179 Empty Empty Capabilities Other
2180 ) } = split /:/, $line, 12;
2181 @info{qw(OwnerTrust OwnerTrustTerse OwnerTrustLevel)} =
2182 _ConvertTrustChar( $info{'OwnerTrustChar'} );
2183 $info{ $_ } = _ParseDate( $info{ $_ } )
2184 foreach qw(Created Expire);
2187 elsif ( $tag eq 'uid' ) {
2189 @info{ qw(Trust Created Expire String) }
2190 = (split /:/, $line)[0,4,5,8];
2191 $info{ $_ } = _ParseDate( $info{ $_ } )
2192 foreach qw(Created Expire);
2193 push @{ $res[-1]{'User'} ||= [] }, \%info;
2195 elsif ( $tag eq 'fpr' ) {
2196 $res[-1]{'Fingerprint'} = (split /:/, $line, 10)[8];
2206 "The key has been disabled", #loc
2207 "key disabled", #loc
2212 "The key has been revoked", #loc
2217 e => [ "The key has expired", #loc
2222 n => [ "Don't trust this key at all", #loc
2227 #gpupg docs says that '-' and 'q' may safely be treated as the same value
2229 'Unknown (no trust value assigned)', #loc
2234 'Unknown (no trust value assigned)', #loc
2239 'Unknown (this value is new to the system)', #loc
2245 "There is marginal trust in this key", #loc
2250 "The key is fully trusted", #loc
2255 "The key is ultimately trusted", #loc
2261 sub _ConvertTrustChar {
2263 return @{ $verbose{'-'} } unless $value;
2264 $value = substr $value, 0, 1;
2265 return @{ $verbose{ $value } || $verbose{'o'} };
2272 return $value unless $value;
2275 my $obj = RT::Date->new( RT->SystemUser );
2277 if ( $value =~ /^\d+$/ ) {
2278 $obj->Set( Value => $value );
2280 $obj->Set( Format => 'unknown', Value => $value, Timezone => 'utc' );
2288 my $gnupg = GnuPG::Interface->new();
2289 my %opt = RT->Config->Get('GnuPGOptions');
2290 $gnupg->options->hash_init(
2291 _PrepareGnuPGOptions( %opt ),
2292 meta_interactive => 0,
2295 my ($handles, $handle_list) = _make_gpg_handles();
2296 my %handle = %$handle_list;
2299 local $SIG{'CHLD'} = 'DEFAULT';
2300 my $pid = safe_run_child { $gnupg->wrap_call(
2301 handles => $handles,
2302 commands => ['--delete-secret-and-public-key'],
2303 command_args => [$key],
2305 close $handle{'stdin'};
2306 while ( my $str = readline $handle{'status'} ) {
2307 if ( $str =~ /^\[GNUPG:\]\s*GET_BOOL delete_key\..*/ ) {
2308 print { $handle{'command'} } "y\n";
2314 close $handle{'stdout'};
2317 $res{'exit_code'} = $?;
2318 foreach ( qw(stderr logger status) ) {
2319 $res{$_} = do { local $/; readline $handle{$_} };
2320 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
2323 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
2324 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
2325 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
2326 if ( $err || $res{'exit_code'} ) {
2327 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
2335 my $gnupg = GnuPG::Interface->new();
2336 my %opt = RT->Config->Get('GnuPGOptions');
2337 $gnupg->options->hash_init(
2338 _PrepareGnuPGOptions( %opt ),
2339 meta_interactive => 0,
2342 my ($handles, $handle_list) = _make_gpg_handles();
2343 my %handle = %$handle_list;
2346 local $SIG{'CHLD'} = 'DEFAULT';
2347 my $pid = safe_run_child { $gnupg->wrap_call(
2348 handles => $handles,
2349 commands => ['--import'],
2351 print { $handle{'stdin'} } $key;
2352 close $handle{'stdin'};
2356 close $handle{'stdout'};
2359 $res{'exit_code'} = $?;
2360 foreach ( qw(stderr logger status) ) {
2361 $res{$_} = do { local $/; readline $handle{$_} };
2362 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
2365 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
2366 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
2367 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
2368 if ( $err || $res{'exit_code'} ) {
2369 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
2376 Signs a small message with the key, to make sure the key exists and
2377 we have a useable passphrase. The first argument MUST be a key identifier
2378 of the signer: either email address, key id or finger print.
2380 Returns a true value if all went well.
2387 my $mime = MIME::Entity->build(
2388 Type => "text/plain",
2389 From => 'nobody@localhost',
2390 To => 'nobody@localhost',
2391 Subject => "dry sign",
2395 my %res = SignEncrypt(
2402 return $res{exit_code} == 0;
2409 This routine returns true if RT's GnuPG support is configured and working
2410 properly (and false otherwise).
2417 my $gnupg = GnuPG::Interface->new();
2418 my %opt = RT->Config->Get('GnuPGOptions');
2419 $gnupg->options->hash_init(
2420 _PrepareGnuPGOptions( %opt ),
2422 meta_interactive => 0,
2425 my ($handles, $handle_list) = _make_gpg_handles();
2426 my %handle = %$handle_list;
2430 local $SIG{'CHLD'} = 'DEFAULT';
2431 my $pid = safe_run_child { $gnupg->wrap_call( commands => ['--version' ], handles => $handles ) };
2432 close $handle{'stdin'};
2437 "Probe for GPG failed."
2438 ." Couldn't run `gpg --version`: ". $@
2443 # on some systems gpg exits with code 2, but still 100% functional,
2444 # it's general error system error or incorrect command, command is correct,
2445 # but there is no way to get actuall error
2446 if ( $? && ($? >> 8) != 2 ) {
2447 my $msg = "Probe for GPG failed."
2448 ." Process exitted with code ". ($? >> 8)
2449 . ($? & 127 ? (" as recieved signal ". ($? & 127)) : '')
2451 foreach ( qw(stderr logger status) ) {
2452 my $tmp = do { local $/; readline $handle{$_} };
2453 next unless $tmp && $tmp =~ /\S/s;
2455 $msg .= "\n$_:\n$tmp\n";
2457 $RT::Logger->debug( $msg );
2464 sub _make_gpg_handles {
2465 my %handle_map = (@_);
2466 $handle_map{$_} = IO::Handle->new
2467 foreach grep !defined $handle_map{$_},
2468 qw(stdin stdout stderr logger status command);
2470 my $handles = GnuPG::Handles->new(%handle_map);
2471 return ($handles, \%handle_map);
2474 RT::Base->_ImportOverlays();
2476 # helper package to avoid using temp file
2477 package IO::Handle::CRLF;
2479 use base qw(IO::Handle);
2482 my ($self, @args) = (@_);
2483 s/\r*\n/\x0D\x0A/g foreach @args;
2484 return $self->SUPER::print( @args );