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52 package RT::Crypt::GnuPG;
56 use RT::EmailParser ();
57 use RT::Util 'safe_run_child';
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/rt3/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 # DEV WARNING: always pass all STD* handles to GnuPG interface even if we don't
355 # need them, just pass 'new IO::Handle' and then close it after safe_run_child.
356 # we don't want to leak anything into FCGI/Apache/MP handles, this break things.
357 # So code should look like:
358 # my $handles = GnuPG::Handles->new(
359 # stdin => ($handle{'stdin'} = new IO::Handle),
360 # stdout => ($handle{'stdout'} = new IO::Handle),
361 # stderr => ($handle{'stderr'} = new IO::Handle),
365 =head2 SignEncrypt Entity => MIME::Entity, [ Encrypt => 1, Sign => 1, ... ]
367 Signs and/or encrypts an email message with GnuPG utility.
373 During signing you can pass C<Signer> argument to set key we sign with this option
374 overrides gnupg's C<default-key> option. If C<Signer> argument is not provided
375 then address of a message sender is used.
377 As well you can pass C<Passphrase>, but if value is undefined then L</GetPassphrase>
382 During encryption you can pass a C<Recipients> array, otherwise C<To>, C<Cc> and
383 C<Bcc> fields of the message are used to fetch the list.
387 Returns a hash with the following keys:
400 my $entity = $args{'Entity'};
401 if ( $args{'Sign'} && !defined $args{'Signer'} ) {
402 $args{'Signer'} = UseKeyForSigning()
403 || (Email::Address->parse( $entity->head->get( 'From' ) ))[0]->address;
405 if ( $args{'Encrypt'} && !$args{'Recipients'} ) {
407 $args{'Recipients'} = [
408 grep $_ && !$seen{ $_ }++, map $_->address,
409 map Email::Address->parse( $entity->head->get( $_ ) ),
414 my $format = lc RT->Config->Get('GnuPG')->{'OutgoingMessagesFormat'} || 'RFC';
415 if ( $format eq 'inline' ) {
416 return SignEncryptInline( %args );
418 return SignEncryptRFC3156( %args );
422 sub SignEncryptRFC3156 {
436 my $gnupg = new GnuPG::Interface;
437 my %opt = RT->Config->Get('GnuPGOptions');
439 # handling passphrase in GnuPGOptions
440 $args{'Passphrase'} = delete $opt{'passphrase'}
441 if !defined $args{'Passphrase'};
443 $opt{'digest-algo'} ||= 'SHA1';
444 $opt{'default_key'} = $args{'Signer'}
445 if $args{'Sign'} && $args{'Signer'};
446 $gnupg->options->hash_init(
447 _PrepareGnuPGOptions( %opt ),
449 meta_interactive => 0,
452 my $entity = $args{'Entity'};
454 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
455 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
459 if ( $args{'Sign'} && !$args{'Encrypt'} ) {
460 # required by RFC3156(Ch. 5) and RFC1847(Ch. 2.1)
461 foreach ( grep !$_->is_multipart, $entity->parts_DFS ) {
462 my $tenc = $_->head->mime_encoding;
463 unless ( $tenc =~ m/^(?:7bit|quoted-printable|base64)$/i ) {
464 $_->head->mime_attr( 'Content-Transfer-Encoding'
465 => $_->effective_type =~ m{^text/}? 'quoted-printable': 'base64'
470 my ($handles, $handle_list) = _make_gpg_handles(stdin =>IO::Handle::CRLF->new );
471 my %handle = %$handle_list;
473 $gnupg->passphrase( $args{'Passphrase'} );
476 local $SIG{'CHLD'} = 'DEFAULT';
477 my $pid = safe_run_child { $gnupg->detach_sign( handles => $handles ) };
478 $entity->make_multipart( 'mixed', Force => 1 );
480 local $SIG{'PIPE'} = 'IGNORE';
481 $entity->parts(0)->print( $handle{'stdin'} );
482 close $handle{'stdin'};
487 my @signature = readline $handle{'stdout'};
488 close $handle{'stdout'};
490 $res{'exit_code'} = $?;
491 foreach ( qw(stderr logger status) ) {
492 $res{$_} = do { local $/; readline $handle{$_} };
493 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
496 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
497 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
498 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
499 if ( $err || $res{'exit_code'} ) {
500 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
504 # setup RFC1847(Ch.2.1) requirements
505 my $protocol = 'application/pgp-signature';
506 $entity->head->mime_attr( 'Content-Type' => 'multipart/signed' );
507 $entity->head->mime_attr( 'Content-Type.protocol' => $protocol );
508 $entity->head->mime_attr( 'Content-Type.micalg' => 'pgp-'. lc $opt{'digest-algo'} );
511 Disposition => 'inline',
516 if ( $args{'Encrypt'} ) {
518 $gnupg->options->push_recipients( $_ ) foreach
519 map UseKeyForEncryption($_) || $_,
520 grep !$seen{ $_ }++, map $_->address,
521 map Email::Address->parse( $entity->head->get( $_ ) ),
524 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
525 binmode $tmp_fh, ':raw';
527 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
528 my %handle = %$handle_list;
529 $handles->options( 'stdout' )->{'direct'} = 1;
530 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
533 local $SIG{'CHLD'} = 'DEFAULT';
534 my $pid = safe_run_child { $args{'Sign'}
535 ? $gnupg->sign_and_encrypt( handles => $handles )
536 : $gnupg->encrypt( handles => $handles ) };
537 $entity->make_multipart( 'mixed', Force => 1 );
539 local $SIG{'PIPE'} = 'IGNORE';
540 $entity->parts(0)->print( $handle{'stdin'} );
541 close $handle{'stdin'};
546 $res{'exit_code'} = $?;
547 foreach ( qw(stderr logger status) ) {
548 $res{$_} = do { local $/; readline $handle{$_} };
549 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
552 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
553 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
554 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
556 $res{'message'} = $@? $@: "gpg exited with error code ". ($? >> 8);
560 my $protocol = 'application/pgp-encrypted';
562 $entity->head->mime_attr( 'Content-Type' => 'multipart/encrypted' );
563 $entity->head->mime_attr( 'Content-Type.protocol' => $protocol );
566 Disposition => 'inline',
567 Data => ['Version: 1',''],
571 Type => 'application/octet-stream',
572 Disposition => 'inline',
577 $entity->parts(-1)->bodyhandle->{'_dirty_hack_to_save_a_ref_tmp_fh'} = $tmp_fh;
582 sub SignEncryptInline {
585 my $entity = $args{'Entity'};
588 $entity->make_singlepart;
589 if ( $entity->is_multipart ) {
590 foreach ( $entity->parts ) {
591 %res = SignEncryptInline( @_, Entity => $_ );
592 return %res if $res{'exit_code'};
597 return _SignEncryptTextInline( @_ )
598 if $entity->effective_type =~ /^text\//i;
600 return _SignEncryptAttachmentInline( @_ );
603 sub _SignEncryptTextInline {
616 return unless $args{'Sign'} || $args{'Encrypt'};
618 my $gnupg = new GnuPG::Interface;
619 my %opt = RT->Config->Get('GnuPGOptions');
621 # handling passphrase in GnupGOptions
622 $args{'Passphrase'} = delete $opt{'passphrase'}
623 if !defined($args{'Passphrase'});
625 $opt{'digest-algo'} ||= 'SHA1';
626 $opt{'default_key'} = $args{'Signer'}
627 if $args{'Sign'} && $args{'Signer'};
628 $gnupg->options->hash_init(
629 _PrepareGnuPGOptions( %opt ),
631 meta_interactive => 0,
634 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
635 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
638 if ( $args{'Encrypt'} ) {
639 $gnupg->options->push_recipients( $_ ) foreach
640 map UseKeyForEncryption($_) || $_,
641 @{ $args{'Recipients'} || [] };
646 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
647 binmode $tmp_fh, ':raw';
649 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
650 my %handle = %$handle_list;
652 $handles->options( 'stdout' )->{'direct'} = 1;
653 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
655 my $entity = $args{'Entity'};
657 local $SIG{'CHLD'} = 'DEFAULT';
658 my $method = $args{'Sign'} && $args{'Encrypt'}
660 : ($args{'Sign'}? 'clearsign': 'encrypt');
661 my $pid = safe_run_child { $gnupg->$method( handles => $handles ) };
663 local $SIG{'PIPE'} = 'IGNORE';
664 $entity->bodyhandle->print( $handle{'stdin'} );
665 close $handle{'stdin'};
669 $res{'exit_code'} = $?;
672 foreach ( qw(stderr logger status) ) {
673 $res{$_} = do { local $/; readline $handle{$_} };
674 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
677 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
678 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
679 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
680 if ( $err || $res{'exit_code'} ) {
681 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
685 $entity->bodyhandle( new MIME::Body::File $tmp_fn );
686 $entity->{'__store_tmp_handle_to_avoid_early_cleanup'} = $tmp_fh;
691 sub _SignEncryptAttachmentInline {
704 return unless $args{'Sign'} || $args{'Encrypt'};
706 my $gnupg = new GnuPG::Interface;
707 my %opt = RT->Config->Get('GnuPGOptions');
709 # handling passphrase in GnupGOptions
710 $args{'Passphrase'} = delete $opt{'passphrase'}
711 if !defined($args{'Passphrase'});
713 $opt{'digest-algo'} ||= 'SHA1';
714 $opt{'default_key'} = $args{'Signer'}
715 if $args{'Sign'} && $args{'Signer'};
716 $gnupg->options->hash_init(
717 _PrepareGnuPGOptions( %opt ),
719 meta_interactive => 0,
722 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
723 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
726 my $entity = $args{'Entity'};
727 if ( $args{'Encrypt'} ) {
728 $gnupg->options->push_recipients( $_ ) foreach
729 map UseKeyForEncryption($_) || $_,
730 @{ $args{'Recipients'} || [] };
735 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
736 binmode $tmp_fh, ':raw';
738 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
739 my %handle = %$handle_list;
740 $handles->options( 'stdout' )->{'direct'} = 1;
741 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
744 local $SIG{'CHLD'} = 'DEFAULT';
745 my $method = $args{'Sign'} && $args{'Encrypt'}
747 : ($args{'Sign'}? 'detach_sign': 'encrypt');
748 my $pid = safe_run_child { $gnupg->$method( handles => $handles ) };
750 local $SIG{'PIPE'} = 'IGNORE';
751 $entity->bodyhandle->print( $handle{'stdin'} );
752 close $handle{'stdin'};
756 $res{'exit_code'} = $?;
759 foreach ( qw(stderr logger status) ) {
760 $res{$_} = do { local $/; readline $handle{$_} };
761 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
764 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
765 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
766 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
767 if ( $err || $res{'exit_code'} ) {
768 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
772 my $filename = $entity->head->recommended_filename || 'no_name';
773 if ( $args{'Sign'} && !$args{'Encrypt'} ) {
774 $entity->make_multipart;
776 Type => 'application/octet-stream',
778 Filename => "$filename.sig",
779 Disposition => 'attachment',
782 $entity->bodyhandle( new MIME::Body::File $tmp_fn );
783 $entity->effective_type('application/octet-stream');
784 $entity->head->mime_attr( $_ => "$filename.pgp" )
785 foreach (qw(Content-Type.name Content-Disposition.filename));
788 $entity->{'__store_tmp_handle_to_avoid_early_cleanup'} = $tmp_fh;
793 sub SignEncryptContent {
806 return unless $args{'Sign'} || $args{'Encrypt'};
808 my $gnupg = new GnuPG::Interface;
809 my %opt = RT->Config->Get('GnuPGOptions');
811 # handling passphrase in GnupGOptions
812 $args{'Passphrase'} = delete $opt{'passphrase'}
813 if !defined($args{'Passphrase'});
815 $opt{'digest-algo'} ||= 'SHA1';
816 $opt{'default_key'} = $args{'Signer'}
817 if $args{'Sign'} && $args{'Signer'};
818 $gnupg->options->hash_init(
819 _PrepareGnuPGOptions( %opt ),
821 meta_interactive => 0,
824 if ( $args{'Sign'} && !defined $args{'Passphrase'} ) {
825 $args{'Passphrase'} = GetPassphrase( Address => $args{'Signer'} );
828 if ( $args{'Encrypt'} ) {
829 $gnupg->options->push_recipients( $_ ) foreach
830 map UseKeyForEncryption($_) || $_,
831 @{ $args{'Recipients'} || [] };
836 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
837 binmode $tmp_fh, ':raw';
839 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
840 my %handle = %$handle_list;
841 $handles->options( 'stdout' )->{'direct'} = 1;
842 $gnupg->passphrase( $args{'Passphrase'} ) if $args{'Sign'};
845 local $SIG{'CHLD'} = 'DEFAULT';
846 my $method = $args{'Sign'} && $args{'Encrypt'}
848 : ($args{'Sign'}? 'clearsign': 'encrypt');
849 my $pid = safe_run_child { $gnupg->$method( handles => $handles ) };
851 local $SIG{'PIPE'} = 'IGNORE';
852 $handle{'stdin'}->print( ${ $args{'Content'} } );
853 close $handle{'stdin'};
857 $res{'exit_code'} = $?;
860 foreach ( qw(stderr logger status) ) {
861 $res{$_} = do { local $/; readline $handle{$_} };
862 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
865 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
866 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
867 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
868 if ( $err || $res{'exit_code'} ) {
869 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
873 ${ $args{'Content'} } = '';
876 my $status = read $tmp_fh, my $buf, 4*1024;
877 unless ( defined $status ) {
878 $RT::Logger->crit( "couldn't read message: $!" );
879 } elsif ( !$status ) {
882 ${ $args{'Content'} } .= $buf;
888 sub FindProtectedParts {
889 my %args = ( Entity => undef, CheckBody => 1, @_ );
890 my $entity = $args{'Entity'};
892 # inline PGP block, only in singlepart
893 unless ( $entity->is_multipart ) {
894 my $io = $entity->open('r');
896 $RT::Logger->warning( "Entity of type ". $entity->effective_type ." has no body" );
899 while ( defined($_ = $io->getline) ) {
900 next unless /^-----BEGIN PGP (SIGNED )?MESSAGE-----/;
901 my $type = $1? 'signed': 'encrypted';
902 $RT::Logger->debug("Found $type inline part");
913 # RFC3156, multipart/{signed,encrypted}
914 if ( ( my $type = $entity->effective_type ) =~ /^multipart\/(?:encrypted|signed)$/ ) {
915 unless ( $entity->parts == 2 ) {
916 $RT::Logger->error( "Encrypted or signed entity must has two subparts. Skipped" );
920 my $protocol = $entity->head->mime_attr( 'Content-Type.protocol' );
921 unless ( $protocol ) {
922 $RT::Logger->error( "Entity is '$type', but has no protocol defined. Skipped" );
926 if ( $type eq 'multipart/encrypted' ) {
927 unless ( $protocol eq 'application/pgp-encrypted' ) {
928 $RT::Logger->info( "Skipping protocol '$protocol', only 'application/pgp-encrypted' is supported" );
931 $RT::Logger->debug("Found encrypted according to RFC3156 part");
936 Data => $entity->parts(1),
937 Info => $entity->parts(0),
940 unless ( $protocol eq 'application/pgp-signature' ) {
941 $RT::Logger->info( "Skipping protocol '$protocol', only 'application/pgp-signature' is supported" );
944 $RT::Logger->debug("Found signed according to RFC3156 part");
949 Data => $entity->parts(0),
950 Signature => $entity->parts(1),
955 # attachments signed with signature in another part
957 foreach my $i ( 0 .. $entity->parts - 1 ) {
958 my $part = $entity->parts($i);
960 # we can not associate a signature within an attachment
962 my $fname = $part->head->recommended_filename;
965 if ( $part->effective_type eq 'application/pgp-signature' ) {
966 push @file_indices, $i;
968 elsif ( $fname =~ /\.sig$/i && $part->effective_type eq 'application/octet-stream' ) {
969 push @file_indices, $i;
974 foreach my $i ( @file_indices ) {
975 my $sig_part = $entity->parts($i);
976 $skip{"$sig_part"}++;
977 my $sig_name = $sig_part->head->recommended_filename;
978 my ($file_name) = $sig_name =~ /^(.*?)(?:\.sig)?$/;
980 my ($data_part_idx) =
981 grep $file_name eq ($entity->parts($_)->head->recommended_filename||''),
982 grep $sig_part ne $entity->parts($_),
983 0 .. $entity->parts - 1;
984 unless ( defined $data_part_idx ) {
985 $RT::Logger->error("Found $sig_name attachment, but didn't find $file_name");
988 my $data_part_in = $entity->parts($data_part_idx);
990 $skip{"$data_part_in"}++;
991 $RT::Logger->debug("Found signature (in '$sig_name') of attachment '$file_name'");
994 Format => 'Attachment',
996 Data => $data_part_in,
997 Signature => $sig_part,
1001 # attachments with inline encryption
1002 my @encrypted_indices =
1003 grep {($entity->parts($_)->head->recommended_filename || '') =~ /\.pgp$/}
1004 0 .. $entity->parts - 1;
1006 foreach my $i ( @encrypted_indices ) {
1007 my $part = $entity->parts($i);
1009 $RT::Logger->debug("Found encrypted attachment '". $part->head->recommended_filename ."'");
1011 Type => 'encrypted',
1012 Format => 'Attachment',
1018 push @res, FindProtectedParts( Entity => $_ )
1019 foreach grep !$skip{"$_"}, $entity->parts;
1024 =head2 VerifyDecrypt Entity => undef, [ Detach => 1, Passphrase => undef, SetStatus => 1 ]
1029 my %args = ( Entity => undef, Detach => 1, SetStatus => 1, @_ );
1030 my @protected = FindProtectedParts( Entity => $args{'Entity'} );
1032 # XXX: detaching may brake nested signatures
1033 foreach my $item( grep $_->{'Type'} eq 'signed', @protected ) {
1034 if ( $item->{'Format'} eq 'RFC3156' ) {
1035 push @res, { VerifyRFC3156( %$item, SetStatus => $args{'SetStatus'} ) };
1036 if ( $args{'Detach'} ) {
1037 $item->{'Top'}->parts( [ $item->{'Data'} ] );
1038 $item->{'Top'}->make_singlepart;
1040 $item->{'Top'}->head->set( 'X-RT-GnuPG-Status' => $res[-1]->{'status'} )
1041 if $args{'SetStatus'};
1042 } elsif ( $item->{'Format'} eq 'Inline' ) {
1043 push @res, { VerifyInline( %$item ) };
1044 $item->{'Data'}->head->set( 'X-RT-GnuPG-Status' => $res[-1]->{'status'} )
1045 if $args{'SetStatus'};
1046 } elsif ( $item->{'Format'} eq 'Attachment' ) {
1047 push @res, { VerifyAttachment( %$item ) };
1048 if ( $args{'Detach'} ) {
1049 $item->{'Top'}->parts( [ grep "$_" ne $item->{'Signature'}, $item->{'Top'}->parts ] );
1050 $item->{'Top'}->make_singlepart;
1052 $item->{'Data'}->head->set( 'X-RT-GnuPG-Status' => $res[-1]->{'status'} )
1053 if $args{'SetStatus'};
1056 foreach my $item( grep $_->{'Type'} eq 'encrypted', @protected ) {
1057 if ( $item->{'Format'} eq 'RFC3156' ) {
1058 push @res, { DecryptRFC3156( %$item ) };
1059 $item->{'Top'}->head->set( 'X-RT-GnuPG-Status' => $res[-1]->{'status'} )
1060 if $args{'SetStatus'};
1061 } elsif ( $item->{'Format'} eq 'Inline' ) {
1062 push @res, { DecryptInline( %$item ) };
1063 $item->{'Data'}->head->set( 'X-RT-GnuPG-Status' => $res[-1]->{'status'} )
1064 if $args{'SetStatus'};
1065 } elsif ( $item->{'Format'} eq 'Attachment' ) {
1066 push @res, { DecryptAttachment( %$item ) };
1067 $item->{'Data'}->head->set( 'X-RT-GnuPG-Status' => $res[-1]->{'status'} )
1068 if $args{'SetStatus'};
1074 sub VerifyInline { return DecryptInline( @_ ) }
1076 sub VerifyAttachment {
1077 my %args = ( Data => undef, Signature => undef, Top => undef, @_ );
1079 my $gnupg = new GnuPG::Interface;
1080 my %opt = RT->Config->Get('GnuPGOptions');
1081 $opt{'digest-algo'} ||= 'SHA1';
1082 $gnupg->options->hash_init(
1083 _PrepareGnuPGOptions( %opt ),
1084 meta_interactive => 0,
1087 foreach ( $args{'Data'}, $args{'Signature'} ) {
1088 next unless $_->bodyhandle->is_encoded;
1090 require RT::EmailParser;
1091 RT::EmailParser->_DecodeBody($_);
1094 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1095 binmode $tmp_fh, ':raw';
1096 $args{'Data'}->bodyhandle->print( $tmp_fh );
1099 my ($handles, $handle_list) = _make_gpg_handles();
1100 my %handle = %$handle_list;
1104 local $SIG{'CHLD'} = 'DEFAULT';
1105 my $pid = safe_run_child { $gnupg->verify(
1106 handles => $handles, command_args => [ '-', $tmp_fn ]
1109 local $SIG{'PIPE'} = 'IGNORE';
1110 $args{'Signature'}->bodyhandle->print( $handle{'stdin'} );
1111 close $handle{'stdin'};
1115 $res{'exit_code'} = $?;
1116 foreach ( qw(stderr logger status) ) {
1117 $res{$_} = do { local $/; readline $handle{$_} };
1118 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1121 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1122 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1123 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1125 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1131 my %args = ( Data => undef, Signature => undef, Top => undef, @_ );
1133 my $gnupg = new GnuPG::Interface;
1134 my %opt = RT->Config->Get('GnuPGOptions');
1135 $opt{'digest-algo'} ||= 'SHA1';
1136 $gnupg->options->hash_init(
1137 _PrepareGnuPGOptions( %opt ),
1138 meta_interactive => 0,
1141 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1142 binmode $tmp_fh, ':raw:eol(CRLF?)';
1143 $args{'Data'}->print( $tmp_fh );
1146 my ($handles, $handle_list) = _make_gpg_handles();
1147 my %handle = %$handle_list;
1151 local $SIG{'CHLD'} = 'DEFAULT';
1152 my $pid = safe_run_child { $gnupg->verify(
1153 handles => $handles, command_args => [ '-', $tmp_fn ]
1156 local $SIG{'PIPE'} = 'IGNORE';
1157 $args{'Signature'}->bodyhandle->print( $handle{'stdin'} );
1158 close $handle{'stdin'};
1162 $res{'exit_code'} = $?;
1163 foreach ( qw(stderr logger status) ) {
1164 $res{$_} = do { local $/; readline $handle{$_} };
1165 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1168 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1169 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1170 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1172 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1177 sub DecryptRFC3156 {
1182 Passphrase => undef,
1186 my $gnupg = new GnuPG::Interface;
1187 my %opt = RT->Config->Get('GnuPGOptions');
1189 # handling passphrase in GnupGOptions
1190 $args{'Passphrase'} = delete $opt{'passphrase'}
1191 if !defined($args{'Passphrase'});
1193 $opt{'digest-algo'} ||= 'SHA1';
1194 $gnupg->options->hash_init(
1195 _PrepareGnuPGOptions( %opt ),
1196 meta_interactive => 0,
1199 if ( $args{'Data'}->bodyhandle->is_encoded ) {
1200 require RT::EmailParser;
1201 RT::EmailParser->_DecodeBody($args{'Data'});
1204 $args{'Passphrase'} = GetPassphrase()
1205 unless defined $args{'Passphrase'};
1207 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1208 binmode $tmp_fh, ':raw';
1210 my ($handles, $handle_list) = _make_gpg_handles(stdout => $tmp_fh);
1211 my %handle = %$handle_list;
1212 $handles->options( 'stdout' )->{'direct'} = 1;
1216 local $SIG{'CHLD'} = 'DEFAULT';
1217 $gnupg->passphrase( $args{'Passphrase'} );
1218 my $pid = safe_run_child { $gnupg->decrypt( handles => $handles ) };
1220 local $SIG{'PIPE'} = 'IGNORE';
1221 $args{'Data'}->bodyhandle->print( $handle{'stdin'} );
1222 close $handle{'stdin'}
1227 $res{'exit_code'} = $?;
1228 foreach ( qw(stderr logger status) ) {
1229 $res{$_} = do { local $/; readline $handle{$_} };
1230 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1233 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1234 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1235 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1237 # if the decryption is fine but the signature is bad, then without this
1238 # status check we lose the decrypted text
1239 # XXX: add argument to the function to control this check
1240 if ( $res{'status'} !~ /DECRYPTION_OKAY/ ) {
1242 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1248 my $parser = new RT::EmailParser;
1249 my $decrypted = $parser->ParseMIMEEntityFromFileHandle( $tmp_fh, 0 );
1250 $decrypted->{'__store_link_to_object_to_avoid_early_cleanup'} = $parser;
1251 $args{'Top'}->parts( [] );
1252 $args{'Top'}->add_part( $decrypted );
1253 $args{'Top'}->make_singlepart;
1260 Passphrase => undef,
1264 my $gnupg = new GnuPG::Interface;
1265 my %opt = RT->Config->Get('GnuPGOptions');
1267 # handling passphrase in GnuPGOptions
1268 $args{'Passphrase'} = delete $opt{'passphrase'}
1269 if !defined($args{'Passphrase'});
1271 $opt{'digest-algo'} ||= 'SHA1';
1272 $gnupg->options->hash_init(
1273 _PrepareGnuPGOptions( %opt ),
1274 meta_interactive => 0,
1277 if ( $args{'Data'}->bodyhandle->is_encoded ) {
1278 require RT::EmailParser;
1279 RT::EmailParser->_DecodeBody($args{'Data'});
1282 $args{'Passphrase'} = GetPassphrase()
1283 unless defined $args{'Passphrase'};
1285 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1286 binmode $tmp_fh, ':raw';
1288 my $io = $args{'Data'}->open('r');
1290 die "Entity has no body, never should happen";
1293 my ($had_literal, $in_block) = ('', 0);
1294 my ($block_fh, $block_fn) = File::Temp::tempfile( UNLINK => 1 );
1295 binmode $block_fh, ':raw';
1298 while ( defined(my $str = $io->getline) ) {
1299 if ( $in_block && $str =~ /^-----END PGP (?:MESSAGE|SIGNATURE)-----/ ) {
1300 print $block_fh $str;
1302 next if $in_block > 0;
1304 seek $block_fh, 0, 0;
1306 my ($res_fh, $res_fn);
1307 ($res_fh, $res_fn, %res) = _DecryptInlineBlock(
1310 BlockHandle => $block_fh,
1312 return %res unless $res_fh;
1314 print $tmp_fh "-----BEGIN OF PGP PROTECTED PART-----\n" if $had_literal;
1315 while (my $buf = <$res_fh> ) {
1318 print $tmp_fh "-----END OF PART-----\n" if $had_literal;
1320 ($block_fh, $block_fn) = File::Temp::tempfile( UNLINK => 1 );
1321 binmode $block_fh, ':raw';
1324 elsif ( $str =~ /^-----BEGIN PGP (SIGNED )?MESSAGE-----/ ) {
1326 print $block_fh $str;
1328 elsif ( $in_block ) {
1329 print $block_fh $str;
1333 $had_literal = 1 if /\S/s;
1339 $args{'Data'}->bodyhandle( new MIME::Body::File $tmp_fn );
1340 $args{'Data'}->{'__store_tmp_handle_to_avoid_early_cleanup'} = $tmp_fh;
1344 sub _DecryptInlineBlock {
1347 BlockHandle => undef,
1348 Passphrase => undef,
1351 my $gnupg = $args{'GnuPG'};
1353 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1354 binmode $tmp_fh, ':raw';
1356 my ($handles, $handle_list) = _make_gpg_handles(
1357 stdin => $args{'BlockHandle'},
1359 my %handle = %$handle_list;
1360 $handles->options( 'stdout' )->{'direct'} = 1;
1361 $handles->options( 'stdin' )->{'direct'} = 1;
1365 local $SIG{'CHLD'} = 'DEFAULT';
1366 $gnupg->passphrase( $args{'Passphrase'} );
1367 my $pid = safe_run_child { $gnupg->decrypt( handles => $handles ) };
1370 $res{'exit_code'} = $?;
1371 foreach ( qw(stderr logger status) ) {
1372 $res{$_} = do { local $/; readline $handle{$_} };
1373 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1376 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1377 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1378 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1380 # if the decryption is fine but the signature is bad, then without this
1381 # status check we lose the decrypted text
1382 # XXX: add argument to the function to control this check
1383 if ( $res{'status'} !~ /DECRYPTION_OKAY/ ) {
1385 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1386 return (undef, undef, %res);
1391 return ($tmp_fh, $tmp_fn, %res);
1394 sub DecryptAttachment {
1398 Passphrase => undef,
1402 my $gnupg = new GnuPG::Interface;
1403 my %opt = RT->Config->Get('GnuPGOptions');
1405 # handling passphrase in GnuPGOptions
1406 $args{'Passphrase'} = delete $opt{'passphrase'}
1407 if !defined($args{'Passphrase'});
1409 $opt{'digest-algo'} ||= 'SHA1';
1410 $gnupg->options->hash_init(
1411 _PrepareGnuPGOptions( %opt ),
1412 meta_interactive => 0,
1415 if ( $args{'Data'}->bodyhandle->is_encoded ) {
1416 require RT::EmailParser;
1417 RT::EmailParser->_DecodeBody($args{'Data'});
1420 $args{'Passphrase'} = GetPassphrase()
1421 unless defined $args{'Passphrase'};
1423 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1424 binmode $tmp_fh, ':raw';
1425 $args{'Data'}->bodyhandle->print( $tmp_fh );
1428 my ($res_fh, $res_fn, %res) = _DecryptInlineBlock(
1431 BlockHandle => $tmp_fh,
1433 return %res unless $res_fh;
1435 $args{'Data'}->bodyhandle( new MIME::Body::File $res_fn );
1436 $args{'Data'}->{'__store_tmp_handle_to_avoid_early_cleanup'} = $res_fh;
1438 my $filename = $args{'Data'}->head->recommended_filename;
1439 $filename =~ s/\.pgp$//i;
1440 $args{'Data'}->head->mime_attr( $_ => $filename )
1441 foreach (qw(Content-Type.name Content-Disposition.filename));
1446 sub DecryptContent {
1449 Passphrase => undef,
1453 my $gnupg = new GnuPG::Interface;
1454 my %opt = RT->Config->Get('GnuPGOptions');
1456 # handling passphrase in GnupGOptions
1457 $args{'Passphrase'} = delete $opt{'passphrase'}
1458 if !defined($args{'Passphrase'});
1460 $opt{'digest-algo'} ||= 'SHA1';
1461 $gnupg->options->hash_init(
1462 _PrepareGnuPGOptions( %opt ),
1463 meta_interactive => 0,
1466 $args{'Passphrase'} = GetPassphrase()
1467 unless defined $args{'Passphrase'};
1469 my ($tmp_fh, $tmp_fn) = File::Temp::tempfile( UNLINK => 1 );
1470 binmode $tmp_fh, ':raw';
1472 my ($handles, $handle_list) = _make_gpg_handles(
1474 my %handle = %$handle_list;
1475 $handles->options( 'stdout' )->{'direct'} = 1;
1479 local $SIG{'CHLD'} = 'DEFAULT';
1480 $gnupg->passphrase( $args{'Passphrase'} );
1481 my $pid = safe_run_child { $gnupg->decrypt( handles => $handles ) };
1483 local $SIG{'PIPE'} = 'IGNORE';
1484 print { $handle{'stdin'} } ${ $args{'Content'} };
1485 close $handle{'stdin'};
1490 $res{'exit_code'} = $?;
1491 foreach ( qw(stderr logger status) ) {
1492 $res{$_} = do { local $/; readline $handle{$_} };
1493 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
1496 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
1497 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
1498 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
1500 # if the decryption is fine but the signature is bad, then without this
1501 # status check we lose the decrypted text
1502 # XXX: add argument to the function to control this check
1503 if ( $res{'status'} !~ /DECRYPTION_OKAY/ ) {
1505 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
1510 ${ $args{'Content'} } = '';
1513 my $status = read $tmp_fh, my $buf, 4*1024;
1514 unless ( defined $status ) {
1515 $RT::Logger->crit( "couldn't read message: $!" );
1516 } elsif ( !$status ) {
1519 ${ $args{'Content'} } .= $buf;
1525 =head2 GetPassphrase [ Address => undef ]
1527 Returns passphrase, called whenever it's required with Address as a named argument.
1532 my %args = ( Address => undef, @_ );
1538 Takes a string containing output of gnupg status stream. Parses it and returns
1539 array of hashes. Each element of array is a hash ref and represents line or
1540 group of lines in the status message.
1542 All hashes have Operation, Status and Message elements.
1548 Classification of operations gnupg performs. Now we have support
1549 for Sign, Encrypt, Decrypt, Verify, PassphraseCheck, RecipientsCheck and Data
1554 Informs about success. Value is 'DONE' on success, other values means that
1555 an operation failed, for example 'ERROR', 'BAD', 'MISSING' and may be other.
1559 User friendly message.
1563 This parser is based on information from GnuPG distribution, see also
1564 F<docs/design_docs/gnupg_details_on_output_formats> in the RT distribution.
1568 my %REASON_CODE_TO_TEXT = (
1570 1 => "No armored data",
1571 2 => "Expected a packet, but did not found one",
1572 3 => "Invalid packet found",
1573 4 => "Signature expected, but not found",
1576 0 => "No specific reason given",
1578 2 => "Ambigious specification",
1579 3 => "Wrong key usage",
1582 6 => "No CRL known",
1584 8 => "Policy mismatch",
1585 9 => "Not a secret key",
1586 10 => "Key not trusted",
1589 0 => 'not specified',
1590 4 => 'unknown algorithm',
1591 9 => 'missing public key',
1595 sub ReasonCodeToText {
1596 my $keyword = shift;
1598 return $REASON_CODE_TO_TEXT{ $keyword }{ $code }
1599 if exists $REASON_CODE_TO_TEXT{ $keyword }{ $code };
1603 my %simple_keyword = (
1605 Operation => 'RecipientsCheck',
1607 Message => 'No recipients',
1610 Operation => 'Data',
1612 Message => 'Unexpected data has been encountered',
1615 Operation => 'Data',
1617 Message => 'The ASCII armor is corrupted',
1622 my %parse_keyword = map { $_ => 1 } qw(
1624 SIG_CREATED GOODSIG BADSIG ERRSIG
1626 DECRYPTION_FAILED DECRYPTION_OKAY
1627 BAD_PASSPHRASE GOOD_PASSPHRASE
1629 NO_RECP INV_RECP NODATA UNEXPECTED
1632 # keywords we ignore without any messages as we parse them using other
1633 # keywords as starting point or just ignore as they are useless for us
1634 my %ignore_keyword = map { $_ => 1 } qw(
1635 NEED_PASSPHRASE MISSING_PASSPHRASE BEGIN_SIGNING PLAINTEXT PLAINTEXT_LENGTH
1636 BEGIN_ENCRYPTION SIG_ID VALIDSIG
1637 ENC_TO BEGIN_DECRYPTION END_DECRYPTION GOODMDC
1638 TRUST_UNDEFINED TRUST_NEVER TRUST_MARGINAL TRUST_FULLY TRUST_ULTIMATE
1643 return () unless $status;
1646 while ( $status =~ /\[GNUPG:\]\s*(.*?)(?=\[GNUPG:\]|\z)/igms ) {
1647 push @status, $1; $status[-1] =~ s/\s+/ /g; $status[-1] =~ s/\s+$//;
1649 $status = join "\n", @status;
1653 my (%user_hint, $latest_user_main_key);
1654 for ( my $i = 0; $i < @status; $i++ ) {
1655 my $line = $status[$i];
1656 my ($keyword, $args) = ($line =~ /^(\S+)\s*(.*)$/s);
1657 if ( $simple_keyword{ $keyword } ) {
1658 push @res, $simple_keyword{ $keyword };
1659 $res[-1]->{'Keyword'} = $keyword;
1662 unless ( $parse_keyword{ $keyword } ) {
1663 $RT::Logger->warning("Skipped $keyword") unless $ignore_keyword{ $keyword };
1667 if ( $keyword eq 'USERID_HINT' ) {
1668 my %tmp = _ParseUserHint($status, $line);
1669 $latest_user_main_key = $tmp{'MainKey'};
1670 if ( $user_hint{ $tmp{'MainKey'} } ) {
1671 while ( my ($k, $v) = each %tmp ) {
1672 $user_hint{ $tmp{'MainKey'} }->{$k} = $v;
1675 $user_hint{ $tmp{'MainKey'} } = \%tmp;
1679 elsif ( $keyword eq 'BAD_PASSPHRASE' || $keyword eq 'GOOD_PASSPHRASE' ) {
1682 Operation => 'PassphraseCheck',
1683 Status => $keyword eq 'BAD_PASSPHRASE'? 'BAD' : 'DONE',
1686 $res{'Status'} = 'MISSING' if $status[ $i - 1 ] =~ /^MISSING_PASSPHRASE/;
1687 foreach my $line ( reverse @status[ 0 .. $i-1 ] ) {
1688 next unless $line =~ /^NEED_PASSPHRASE\s+(\S+)\s+(\S+)\s+(\S+)/;
1689 next if $key_id && $2 ne $key_id;
1690 @res{'MainKey', 'Key', 'KeyType'} = ($1, $2, $3);
1693 $res{'Message'} = ucfirst( lc( $res{'Status'} eq 'DONE'? 'GOOD': $res{'Status'} ) ) .' passphrase';
1694 $res{'User'} = ( $user_hint{ $res{'MainKey'} } ||= {} ) if $res{'MainKey'};
1695 if ( exists $res{'User'}->{'EmailAddress'} ) {
1696 $res{'Message'} .= ' for '. $res{'User'}->{'EmailAddress'};
1698 $res{'Message'} .= " for '0x$key_id'";
1702 elsif ( $keyword eq 'END_ENCRYPTION' ) {
1704 Operation => 'Encrypt',
1706 Message => 'Data has been encrypted',
1708 foreach my $line ( reverse @status[ 0 .. $i-1 ] ) {
1709 next unless $line =~ /^BEGIN_ENCRYPTION\s+(\S+)\s+(\S+)/;
1710 @res{'MdcMethod', 'SymAlgo'} = ($1, $2);
1715 elsif ( $keyword eq 'DECRYPTION_FAILED' || $keyword eq 'DECRYPTION_OKAY' ) {
1716 my %res = ( Operation => 'Decrypt' );
1717 @res{'Status', 'Message'} =
1718 $keyword eq 'DECRYPTION_FAILED'
1719 ? ('ERROR', 'Decryption failed')
1720 : ('DONE', 'Decryption process succeeded');
1722 foreach my $line ( reverse @status[ 0 .. $i-1 ] ) {
1723 next unless $line =~ /^ENC_TO\s+(\S+)\s+(\S+)\s+(\S+)/;
1724 my ($key, $alg, $key_length) = ($1, $2, $3);
1726 my %encrypted_to = (
1727 Message => "The message is encrypted to '0x$key'",
1728 User => ( $user_hint{ $key } ||= {} ),
1730 KeyLength => $key_length,
1734 push @{ $res{'EncryptedTo'} ||= [] }, \%encrypted_to;
1739 elsif ( $keyword eq 'NO_SECKEY' || $keyword eq 'NO_PUBKEY' ) {
1740 my ($key) = split /\s+/, $args;
1741 my $type = $keyword eq 'NO_SECKEY'? 'secret': 'public';
1743 Operation => 'KeyCheck',
1744 Status => 'MISSING',
1745 Message => ucfirst( $type ) ." key '0x$key' is not available",
1749 $res{'User'} = ( $user_hint{ $key } ||= {} );
1750 $res{'User'}{ ucfirst( $type ). 'KeyMissing' } = 1;
1753 # GOODSIG, BADSIG, VALIDSIG, TRUST_*
1754 elsif ( $keyword eq 'GOODSIG' ) {
1756 Operation => 'Verify',
1758 Message => 'The signature is good',
1760 @res{qw(Key UserString)} = split /\s+/, $args, 2;
1761 $res{'Message'} .= ', signed by '. $res{'UserString'};
1763 foreach my $line ( @status[ $i .. $#status ] ) {
1764 next unless $line =~ /^TRUST_(\S+)/;
1768 $res{'Message'} .= ', trust level is '. lc( $res{'Trust'} || 'unknown');
1770 foreach my $line ( @status[ $i .. $#status ] ) {
1771 next unless $line =~ /^VALIDSIG\s+(.*)/;
1784 ) } = split /\s+/, $1, 10;
1789 elsif ( $keyword eq 'BADSIG' ) {
1791 Operation => 'Verify',
1793 Message => 'The signature has not been verified okay',
1795 @res{qw(Key UserString)} = split /\s+/, $args, 2;
1798 elsif ( $keyword eq 'ERRSIG' ) {
1800 Operation => 'Verify',
1802 Message => 'Not possible to check the signature',
1804 @res{qw(Key PubkeyAlgo HashAlgo Class Timestamp ReasonCode Other)}
1805 = split /\s+/, $args, 7;
1807 $res{'Reason'} = ReasonCodeToText( $keyword, $res{'ReasonCode'} );
1808 $res{'Message'} .= ", the reason is ". $res{'Reason'};
1812 elsif ( $keyword eq 'SIG_CREATED' ) {
1813 # SIG_CREATED <type> <pubkey algo> <hash algo> <class> <timestamp> <key fpr>
1814 my @props = split /\s+/, $args;
1816 Operation => 'Sign',
1818 Message => "Signed message",
1820 PubKeyAlgo => $props[1],
1821 HashKeyAlgo => $props[2],
1823 Timestamp => $props[4],
1824 KeyFingerprint => $props[5],
1825 User => $user_hint{ $latest_user_main_key },
1827 $res[-1]->{Message} .= ' by '. $user_hint{ $latest_user_main_key }->{'EmailAddress'}
1828 if $user_hint{ $latest_user_main_key };
1830 elsif ( $keyword eq 'INV_RECP' ) {
1831 my ($rcode, $recipient) = split /\s+/, $args, 2;
1832 my $reason = ReasonCodeToText( $keyword, $rcode );
1834 Operation => 'RecipientsCheck',
1836 Message => "Recipient '$recipient' is unusable, the reason is '$reason'",
1837 Recipient => $recipient,
1838 ReasonCode => $rcode,
1842 elsif ( $keyword eq 'NODATA' ) {
1843 my $rcode = (split /\s+/, $args)[0];
1844 my $reason = ReasonCodeToText( $keyword, $rcode );
1846 Operation => 'Data',
1848 Message => "No data has been found. The reason is '$reason'",
1849 ReasonCode => $rcode,
1854 $RT::Logger->warning("Keyword $keyword is unknown");
1857 $res[-1]{'Keyword'} = $keyword if @res && !$res[-1]{'Keyword'};
1862 sub _ParseUserHint {
1863 my ($status, $hint) = (@_);
1864 my ($main_key_id, $user_str) = ($hint =~ /^USERID_HINT\s+(\S+)\s+(.*)$/);
1865 return () unless $main_key_id;
1867 MainKey => $main_key_id,
1868 String => $user_str,
1869 EmailAddress => (map $_->address, Email::Address->parse( $user_str ))[0],
1873 sub _PrepareGnuPGOptions {
1875 my %res = map { lc $_ => $opt{ $_ } } grep $supported_opt{ lc $_ }, keys %opt;
1876 $res{'extra_args'} ||= [];
1877 foreach my $o ( grep !$supported_opt{ lc $_ }, keys %opt ) {
1878 push @{ $res{'extra_args'} }, '--'. lc $o;
1879 push @{ $res{'extra_args'} }, $opt{ $o }
1880 if defined $opt{ $o };
1887 # one arg -> return preferred key
1889 sub UseKeyForEncryption {
1892 } elsif ( @_ > 1 ) {
1894 $key{ lc($_) } = delete $key{ $_ } foreach grep lc ne $_, keys %key;
1896 return $key{ $_[0] };
1901 =head2 UseKeyForSigning
1903 Returns or sets identifier of the key that should be used for signing.
1905 Returns the current value when called without arguments.
1907 Sets new value when called with one argument and unsets if it's undef.
1912 sub UseKeyForSigning {
1919 =head2 GetKeysForEncryption
1921 Takes identifier and returns keys suitable for encryption.
1923 B<Note> that keys for which trust level is not set are
1928 sub GetKeysForEncryption {
1930 my %res = GetKeysInfo( $key_id, 'public', @_ );
1931 return %res if $res{'exit_code'};
1932 return %res unless $res{'info'};
1934 foreach my $key ( splice @{ $res{'info'} } ) {
1935 # skip disabled keys
1936 next if $key->{'Capabilities'} =~ /D/;
1937 # skip keys not suitable for encryption
1938 next unless $key->{'Capabilities'} =~ /e/i;
1939 # skip disabled, expired, revoke and keys with no trust,
1940 # but leave keys with unknown trust level
1941 next if $key->{'TrustLevel'} < 0;
1943 push @{ $res{'info'} }, $key;
1945 delete $res{'info'} unless @{ $res{'info'} };
1949 sub GetKeysForSigning {
1951 return GetKeysInfo( $key_id, 'private', @_ );
1954 sub CheckRecipients {
1955 my @recipients = (@_);
1957 my ($status, @issues) = (1, ());
1960 foreach my $address ( grep !$seen{ lc $_ }++, map $_->address, @recipients ) {
1961 my %res = GetKeysForEncryption( $address );
1962 if ( $res{'info'} && @{ $res{'info'} } == 1 && $res{'info'}[0]{'TrustLevel'} > 0 ) {
1963 # good, one suitable and trusted key
1966 my $user = RT::User->new( $RT::SystemUser );
1967 $user->LoadByEmail( $address );
1968 # it's possible that we have no User record with the email
1969 $user = undef unless $user->id;
1971 if ( my $fpr = UseKeyForEncryption( $address ) ) {
1972 if ( $res{'info'} && @{ $res{'info'} } ) {
1974 grep lc $_->{'Fingerprint'} eq lc $fpr,
1975 grep $_->{'TrustLevel'} > 0,
1981 EmailAddress => $address,
1982 $user? (User => $user) : (),
1985 $issue{'Message'} = "Selected key either is not trusted or doesn't exist anymore."; #loc
1986 push @issues, \%issue;
1991 $prefered_key = $user->PreferredKey if $user;
1992 #XXX: prefered key is not yet implemented...
1997 EmailAddress => $address,
1998 $user? (User => $user) : (),
2002 unless ( $res{'info'} && @{ $res{'info'} } ) {
2004 $issue{'Message'} = "There is no key suitable for encryption."; #loc
2006 elsif ( @{ $res{'info'} } == 1 && !$res{'info'}[0]{'TrustLevel'} ) {
2008 $issue{'Message'} = "There is one suitable key, but trust level is not set."; #loc
2012 $issue{'Message'} = "There are several keys suitable for encryption."; #loc
2014 push @issues, \%issue;
2016 return ($status, @issues);
2019 sub GetPublicKeyInfo {
2020 return GetKeyInfo( shift, 'public', @_ );
2023 sub GetPrivateKeyInfo {
2024 return GetKeyInfo( shift, 'private', @_ );
2028 my %res = GetKeysInfo(@_);
2029 $res{'info'} = $res{'info'}->[0];
2035 my $type = shift || 'public';
2039 return (exit_code => 0) unless $force;
2042 my $gnupg = new GnuPG::Interface;
2043 my %opt = RT->Config->Get('GnuPGOptions');
2044 $opt{'digest-algo'} ||= 'SHA1';
2045 $opt{'with-colons'} = undef; # parseable format
2046 $opt{'fingerprint'} = undef; # show fingerprint
2047 $opt{'fixed-list-mode'} = undef; # don't merge uid with keys
2048 $gnupg->options->hash_init(
2049 _PrepareGnuPGOptions( %opt ),
2051 meta_interactive => 0,
2056 my ($handles, $handle_list) = _make_gpg_handles();
2057 my %handle = %$handle_list;
2060 local $SIG{'CHLD'} = 'DEFAULT';
2061 my $method = $type eq 'private'? 'list_secret_keys': 'list_public_keys';
2062 my $pid = safe_run_child { $gnupg->$method( handles => $handles, $email? (command_args => $email) : () ) };
2063 close $handle{'stdin'};
2067 my @info = readline $handle{'stdout'};
2068 close $handle{'stdout'};
2070 $res{'exit_code'} = $?;
2071 foreach ( qw(stderr logger status) ) {
2072 $res{$_} = do { local $/; readline $handle{$_} };
2073 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
2076 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
2077 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
2078 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
2080 $res{'message'} = $@? $@: "gpg exitted with error code ". ($? >> 8);
2084 @info = ParseKeysInfo( @info );
2085 $res{'info'} = \@info;
2092 my %gpg_opt = RT->Config->Get('GnuPGOptions');
2095 foreach my $line( @lines ) {
2098 ($tag, $line) = split /:/, $line, 2;
2099 if ( $tag eq 'pub' ) {
2102 TrustChar KeyLength Algorithm Key
2103 Created Expire Empty OwnerTrustChar
2104 Empty Empty Capabilities Other
2105 ) } = split /:/, $line, 12;
2107 # workaround gnupg's wierd behaviour, --list-keys command report calculated trust levels
2108 # for any model except 'always', so you can change models and see changes, but not for 'always'
2109 # we try to handle it in a simple way - we set ultimate trust for any key with trust
2110 # level >= 0 if trust model is 'always'
2112 $always_trust = 1 if exists $gpg_opt{'always-trust'};
2113 $always_trust = 1 if exists $gpg_opt{'trust-model'} && $gpg_opt{'trust-model'} eq 'always';
2114 @info{qw(Trust TrustTerse TrustLevel)} =
2115 _ConvertTrustChar( $info{'TrustChar'} );
2116 if ( $always_trust && $info{'TrustLevel'} >= 0 ) {
2117 @info{qw(Trust TrustTerse TrustLevel)} =
2118 _ConvertTrustChar( 'u' );
2121 @info{qw(OwnerTrust OwnerTrustTerse OwnerTrustLevel)} =
2122 _ConvertTrustChar( $info{'OwnerTrustChar'} );
2123 $info{ $_ } = _ParseDate( $info{ $_ } )
2124 foreach qw(Created Expire);
2127 elsif ( $tag eq 'sec' ) {
2130 Empty KeyLength Algorithm Key
2131 Created Expire Empty OwnerTrustChar
2132 Empty Empty Capabilities Other
2133 ) } = split /:/, $line, 12;
2134 @info{qw(OwnerTrust OwnerTrustTerse OwnerTrustLevel)} =
2135 _ConvertTrustChar( $info{'OwnerTrustChar'} );
2136 $info{ $_ } = _ParseDate( $info{ $_ } )
2137 foreach qw(Created Expire);
2140 elsif ( $tag eq 'uid' ) {
2142 @info{ qw(Trust Created Expire String) }
2143 = (split /:/, $line)[0,4,5,8];
2144 $info{ $_ } = _ParseDate( $info{ $_ } )
2145 foreach qw(Created Expire);
2146 push @{ $res[-1]{'User'} ||= [] }, \%info;
2148 elsif ( $tag eq 'fpr' ) {
2149 $res[-1]{'Fingerprint'} = (split /:/, $line, 10)[8];
2159 "The key has been disabled", #loc
2160 "key disabled", #loc
2165 "The key has been revoked", #loc
2170 e => [ "The key has expired", #loc
2175 n => [ "Don't trust this key at all", #loc
2180 #gpupg docs says that '-' and 'q' may safely be treated as the same value
2182 'Unknown (no trust value assigned)', #loc
2187 'Unknown (no trust value assigned)', #loc
2192 'Unknown (this value is new to the system)', #loc
2198 "There is marginal trust in this key", #loc
2203 "The key is fully trusted", #loc
2208 "The key is ultimately trusted", #loc
2214 sub _ConvertTrustChar {
2216 return @{ $verbose{'-'} } unless $value;
2217 $value = substr $value, 0, 1;
2218 return @{ $verbose{ $value } || $verbose{'o'} };
2225 return $value unless $value;
2228 my $obj = RT::Date->new( $RT::SystemUser );
2230 if ( $value =~ /^\d+$/ ) {
2231 $obj->Set( Value => $value );
2233 $obj->Set( Format => 'unknown', Value => $value, Timezone => 'utc' );
2241 my $gnupg = new GnuPG::Interface;
2242 my %opt = RT->Config->Get('GnuPGOptions');
2243 $gnupg->options->hash_init(
2244 _PrepareGnuPGOptions( %opt ),
2245 meta_interactive => 0,
2248 my ($handles, $handle_list) = _make_gpg_handles();
2249 my %handle = %$handle_list;
2252 local $SIG{'CHLD'} = 'DEFAULT';
2253 local @ENV{'LANG', 'LC_ALL'} = ('C', 'C');
2254 my $pid = safe_run_child { $gnupg->wrap_call(
2255 handles => $handles,
2256 commands => ['--delete-secret-and-public-key'],
2257 command_args => [$key],
2259 close $handle{'stdin'};
2260 while ( my $str = readline $handle{'status'} ) {
2261 if ( $str =~ /^\[GNUPG:\]\s*GET_BOOL delete_key\..*/ ) {
2262 print { $handle{'command'} } "y\n";
2268 close $handle{'stdout'};
2271 $res{'exit_code'} = $?;
2272 foreach ( qw(stderr logger status) ) {
2273 $res{$_} = do { local $/; readline $handle{$_} };
2274 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
2277 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
2278 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
2279 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
2280 if ( $err || $res{'exit_code'} ) {
2281 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
2289 my $gnupg = new GnuPG::Interface;
2290 my %opt = RT->Config->Get('GnuPGOptions');
2291 $gnupg->options->hash_init(
2292 _PrepareGnuPGOptions( %opt ),
2293 meta_interactive => 0,
2296 my ($handles, $handle_list) = _make_gpg_handles();
2297 my %handle = %$handle_list;
2300 local $SIG{'CHLD'} = 'DEFAULT';
2301 local @ENV{'LANG', 'LC_ALL'} = ('C', 'C');
2302 my $pid = safe_run_child { $gnupg->wrap_call(
2303 handles => $handles,
2304 commands => ['--import'],
2306 print { $handle{'stdin'} } $key;
2307 close $handle{'stdin'};
2311 close $handle{'stdout'};
2314 $res{'exit_code'} = $?;
2315 foreach ( qw(stderr logger status) ) {
2316 $res{$_} = do { local $/; readline $handle{$_} };
2317 delete $res{$_} unless $res{$_} && $res{$_} =~ /\S/s;
2320 $RT::Logger->debug( $res{'status'} ) if $res{'status'};
2321 $RT::Logger->warning( $res{'stderr'} ) if $res{'stderr'};
2322 $RT::Logger->error( $res{'logger'} ) if $res{'logger'} && $?;
2323 if ( $err || $res{'exit_code'} ) {
2324 $res{'message'} = $err? $err : "gpg exitted with error code ". ($res{'exit_code'} >> 8);
2331 Signs a small message with the key, to make sure the key exists and
2332 we have a useable passphrase. The first argument MUST be a key identifier
2333 of the signer: either email address, key id or finger print.
2335 Returns a true value if all went well.
2342 my $mime = MIME::Entity->build(
2343 Type => "text/plain",
2344 From => 'nobody@localhost',
2345 To => 'nobody@localhost',
2346 Subject => "dry sign",
2350 my %res = SignEncrypt(
2357 return $res{exit_code} == 0;
2364 This routine returns true if RT's GnuPG support is configured and working
2365 properly (and false otherwise).
2372 my $gnupg = new GnuPG::Interface;
2373 my %opt = RT->Config->Get('GnuPGOptions');
2374 $gnupg->options->hash_init(
2375 _PrepareGnuPGOptions( %opt ),
2377 meta_interactive => 0,
2380 my ($handles, $handle_list) = _make_gpg_handles();
2381 my %handle = %$handle_list;
2385 local $SIG{'CHLD'} = 'DEFAULT';
2386 my $pid = safe_run_child { $gnupg->wrap_call( commands => ['--version' ], handles => $handles ) };
2387 close $handle{'stdin'};
2392 "Probe for GPG failed."
2393 ." Couldn't run `gpg --version`: ". $@
2398 # on some systems gpg exits with code 2, but still 100% functional,
2399 # it's general error system error or incorrect command, command is correct,
2400 # but there is no way to get actuall error
2401 if ( $? && ($? >> 8) != 2 ) {
2403 "Probe for GPG failed."
2404 ." Process exitted with code ". ($? >> 8)
2405 . ($? & 127 ? (" as recieved signal ". ($? & 127)) : '')
2413 sub _make_gpg_handles {
2415 stdin => IO::Handle->new(),
2416 stdout => IO::Handle->new(),
2417 stderr => IO::Handle->new(),
2418 logger => IO::Handle->new(),
2419 status => IO::Handle->new(),
2420 command => IO::Handle->new(),
2425 my $handles = GnuPG::Handles->new(%handle_map);
2426 return ($handles, \%handle_map);
2429 eval "require RT::Crypt::GnuPG_Vendor";
2430 if ($@ && $@ !~ qr{^Can't locate RT/Crypt/GnuPG_Vendor.pm}) {
2434 eval "require RT::Crypt::GnuPG_Local";
2435 if ($@ && $@ !~ qr{^Can't locate RT/Crypt/GnuPG_Local.pm}) {
2439 # helper package to avoid using temp file
2440 package IO::Handle::CRLF;
2442 use base qw(IO::Handle);
2445 my ($self, @args) = (@_);
2446 s/\r*\n/\x0D\x0A/g foreach @args;
2447 return $self->SUPER::print( @args );