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-# BEGIN BPS TAGGED BLOCK {{{
-#
-# COPYRIGHT:
-#
-# This software is Copyright (c) 1996-2009 Best Practical Solutions, LLC
-# <jesse@bestpractical.com>
-#
-# (Except where explicitly superseded by other copyright notices)
-#
-#
-# LICENSE:
-#
-# This work is made available to you under the terms of Version 2 of
-# the GNU General Public License. A copy of that license should have
-# been provided with this software, but in any event can be snarfed
-# from www.gnu.org.
-#
-# This work is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 or visit their web page on the internet at
-# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html.
-#
-#
-# CONTRIBUTION SUBMISSION POLICY:
-#
-# (The following paragraph is not intended to limit the rights granted
-# to you to modify and distribute this software under the terms of
-# the GNU General Public License and is only of importance to you if
-# you choose to contribute your changes and enhancements to the
-# community by submitting them to Best Practical Solutions, LLC.)
-#
-# By intentionally submitting any modifications, corrections or
-# derivatives to this work, or any other work intended for use with
-# Request Tracker, to Best Practical Solutions, LLC, you confirm that
-# you are the copyright holder for those contributions and you grant
-# Best Practical Solutions, LLC a nonexclusive, worldwide, irrevocable,
-# royalty-free, perpetual, license to use, copy, create derivative
-# works based on those contributions, and sublicense and distribute
-# those contributions and any derivatives thereof.
-#
-# END BPS TAGGED BLOCK }}}
-
-=head1 SYNOPSIS
-
- use RT::Attachment;
-
-=head1 DESCRIPTION
-
-This module should never be instantiated directly by client code. it's an internal
-module which should only be instantiated through exported APIs in Ticket, Queue and other
-similar objects.
-
-=head1 METHODS
-
-
-
-=cut
-
-
-package RT::Attachment;
-
-use strict;
-no warnings qw(redefine);
-
-use RT::Transaction;
-use MIME::Base64;
-use MIME::QuotedPrint;
-
-sub _OverlayAccessible {
- {
- TransactionId => { 'read'=>1, 'public'=>1, 'write' => 0 },
- MessageId => { 'read'=>1, 'write' => 0 },
- Parent => { 'read'=>1, 'write' => 0 },
- ContentType => { 'read'=>1, 'write' => 0 },
- Subject => { 'read'=>1, 'write' => 0 },
- Content => { 'read'=>1, 'write' => 0 },
- ContentEncoding => { 'read'=>1, 'write' => 0 },
- Headers => { 'read'=>1, 'write' => 0 },
- Filename => { 'read'=>1, 'write' => 0 },
- Creator => { 'read'=>1, 'auto'=>1, },
- Created => { 'read'=>1, 'auto'=>1, },
- };
-}
-
-=head2 Create
-
-Create a new attachment. Takes a paramhash:
-
- 'Attachment' Should be a single MIME body with optional subparts
- 'Parent' is an optional id of the parent attachment
- 'TransactionId' is the mandatory id of the transaction this attachment is associated with.;
-
-=cut
-
-sub Create {
- my $self = shift;
- my %args = ( id => 0,
- TransactionId => 0,
- Parent => 0,
- Attachment => undef,
- @_ );
-
- # For ease of reference
- my $Attachment = $args{'Attachment'};
-
- # if we didn't specify a ticket, we need to bail
- unless ( $args{'TransactionId'} ) {
- $RT::Logger->crit( "RT::Attachment->Create couldn't, as you didn't specify a transaction" );
- return (0);
- }
-
- # If we possibly can, collapse it to a singlepart
- $Attachment->make_singlepart;
-
- # Get the subject
- my $Subject = $Attachment->head->get( 'subject', 0 );
- $Subject = '' unless defined $Subject;
- chomp $Subject;
- utf8::decode( $Subject ) unless utf8::is_utf8( $Subject );
-
- #Get the Message-ID
- my $MessageId = $Attachment->head->get( 'Message-ID', 0 );
- defined($MessageId) or $MessageId = '';
- chomp ($MessageId);
- $MessageId =~ s/^<(.*?)>$/$1/o;
-
- #Get the filename
- my $Filename = $Attachment->head->recommended_filename;
-
- # MIME::Head doesn't support perl strings well and can return
- # octets which later will be double encoded in low-level code
- my $head = $Attachment->head->as_string;
- utf8::decode( $head ) unless utf8::is_utf8( $head );
-
- # If a message has no bodyhandle, that means that it has subparts (or appears to)
- # and we should act accordingly.
- unless ( defined $Attachment->bodyhandle ) {
- my ($id) = $self->SUPER::Create(
- TransactionId => $args{'TransactionId'},
- Parent => $args{'Parent'},
- ContentType => $Attachment->mime_type,
- Headers => $head,
- MessageId => $MessageId,
- Subject => $Subject,
- );
-
- unless ($id) {
- $RT::Logger->crit("Attachment insert failed - ". $RT::Handle->dbh->errstr);
- }
-
- foreach my $part ( $Attachment->parts ) {
- my $SubAttachment = new RT::Attachment( $self->CurrentUser );
- my ($id) = $SubAttachment->Create(
- TransactionId => $args{'TransactionId'},
- Parent => $id,
- Attachment => $part,
- );
- unless ($id) {
- $RT::Logger->crit("Attachment insert failed: ". $RT::Handle->dbh->errstr);
- }
- }
- return ($id);
- }
-
- #If it's not multipart
- else {
-
- my ($ContentEncoding, $Body) = $self->_EncodeLOB(
- $Attachment->bodyhandle->as_string,
- $Attachment->mime_type
- );
-
- my $id = $self->SUPER::Create(
- TransactionId => $args{'TransactionId'},
- ContentType => $Attachment->mime_type,
- ContentEncoding => $ContentEncoding,
- Parent => $args{'Parent'},
- Headers => $head,
- Subject => $Subject,
- Content => $Body,
- Filename => $Filename,
- MessageId => $MessageId,
- );
-
- unless ($id) {
- $RT::Logger->crit("Attachment insert failed: ". $RT::Handle->dbh->errstr);
- }
- return $id;
- }
-}
-
-=head2 Import
-
-Create an attachment exactly as specified in the named parameters.
-
-=cut
-
-sub Import {
- my $self = shift;
- my %args = ( ContentEncoding => 'none', @_ );
-
- ( $args{'ContentEncoding'}, $args{'Content'} ) =
- $self->_EncodeLOB( $args{'Content'}, $args{'MimeType'} );
-
- return ( $self->SUPER::Create(%args) );
-}
-
-=head2 TransactionObj
-
-Returns the transaction object asscoiated with this attachment.
-
-=cut
-
-sub TransactionObj {
- my $self = shift;
-
- unless ( $self->{_TransactionObj} ) {
- $self->{_TransactionObj} = RT::Transaction->new( $self->CurrentUser );
- $self->{_TransactionObj}->Load( $self->TransactionId );
- }
-
- unless ($self->{_TransactionObj}->Id) {
- $RT::Logger->crit( "Attachment ". $self->id
- ." can't find transaction ". $self->TransactionId
- ." which it is ostensibly part of. That's bad");
- }
- return $self->{_TransactionObj};
-}
-
-=head2 ParentObj
-
-Returns a parent's L<RT::Attachment> object if this attachment
-has a parent, otherwise returns undef.
-
-=cut
-
-sub ParentObj {
- my $self = shift;
- return undef unless $self->Parent;
-
- my $parent = RT::Attachment->new( $self->CurrentUser );
- $parent->LoadById( $self->Parent );
- return $parent;
-}
-
-=head2 Children
-
-Returns an L<RT::Attachments> object which is preloaded with
-all attachments objects with this attachment\'s Id as their
-C<Parent>.
-
-=cut
-
-sub Children {
- my $self = shift;
-
- my $kids = RT::Attachments->new( $self->CurrentUser );
- $kids->ChildrenOf( $self->Id );
- return($kids);
-}
-
-=head2 Content
-
-Returns the attachment's content. if it's base64 encoded, decode it
-before returning it.
-
-=cut
-
-sub Content {
- my $self = shift;
- return $self->_DecodeLOB(
- $self->ContentType,
- $self->ContentEncoding,
- $self->_Value('Content', decode_utf8 => 0),
- );
-}
-
-=head2 OriginalContent
-
-Returns the attachment's content as octets before RT's mangling.
-Currently, this just means restoring text content back to its
-original encoding.
-
-=cut
-
-sub OriginalContent {
- my $self = shift;
-
- return $self->Content unless RT::I18N::IsTextualContentType($self->ContentType);
- my $enc = $self->OriginalEncoding;
-
- my $content;
- if ( !$self->ContentEncoding || $self->ContentEncoding eq 'none' ) {
- $content = $self->_Value('Content', decode_utf8 => 0);
- } elsif ( $self->ContentEncoding eq 'base64' ) {
- $content = MIME::Base64::decode_base64($self->_Value('Content', decode_utf8 => 0));
- } elsif ( $self->ContentEncoding eq 'quoted-printable' ) {
- $content = MIME::QuotedPrint::decode($self->_Value('Content', decode_utf8 => 0));
- } else {
- return( $self->loc("Unknown ContentEncoding [_1]", $self->ContentEncoding));
- }
-
- # Turn *off* the SvUTF8 bits here so decode_utf8 and from_to below can work.
- local $@;
- Encode::_utf8_off($content);
-
- if (!$enc || $enc eq '' || $enc eq 'utf8' || $enc eq 'utf-8') {
- # If we somehow fail to do the decode, at least push out the raw bits
- eval { return( Encode::decode_utf8($content)) } || return ($content);
- }
-
- eval { Encode::from_to($content, 'utf8' => $enc) } if $enc;
- if ($@) {
- $RT::Logger->error("Could not convert attachment from assumed utf8 to '$enc' :".$@);
- }
- return $content;
-}
-
-=head2 OriginalEncoding
-
-Returns the attachment's original encoding.
-
-=cut
-
-sub OriginalEncoding {
- my $self = shift;
- return $self->GetHeader('X-RT-Original-Encoding');
-}
-
-=head2 ContentLength
-
-Returns length of L</Content> in bytes.
-
-=cut
-
-sub ContentLength {
- my $self = shift;
-
- return undef unless $self->TransactionObj->CurrentUserCanSee;
-
- my $len = $self->GetHeader('Content-Length');
- unless ( defined $len ) {
- use bytes;
- no warnings 'uninitialized';
- $len = length($self->Content);
- $self->SetHeader('Content-Length' => $len);
- }
- return $len;
-}
-
-=head2 Quote
-
-=cut
-
-sub Quote {
- my $self=shift;
- my %args=(Reply=>undef, # Prefilled reply (i.e. from the KB/FAQ system)
- @_);
-
- my ($quoted_content, $body, $headers);
- my $max=0;
-
- # TODO: Handle Multipart/Mixed (eventually fix the link in the
- # ShowHistory web template?)
- if (RT::I18N::IsTextualContentType($self->ContentType)) {
- $body=$self->Content;
-
- # Do we need any preformatting (wrapping, that is) of the message?
-
- # Remove quoted signature.
- $body =~ s/\n-- \n(.*)$//s;
-
- # What's the longest line like?
- foreach (split (/\n/,$body)) {
- $max=length if ( length > $max);
- }
-
- if ($max>76) {
- require Text::Wrapper;
- my $wrapper=new Text::Wrapper
- (
- columns => 70,
- body_start => ($max > 70*3 ? ' ' : ''),
- par_start => ''
- );
- $body=$wrapper->wrap($body);
- }
-
- $body =~ s/^/> /gm;
-
- $body = '[' . $self->TransactionObj->CreatorObj->Name() . ' - ' . $self->TransactionObj->CreatedAsString()
- . "]:\n\n"
- . $body . "\n\n";
-
- } else {
- $body = "[Non-text message not quoted]\n\n";
- }
-
- $max=60 if $max<60;
- $max=70 if $max>78;
- $max+=2;
-
- return (\$body, $max);
-}
-
-=head2 ContentAsMIME
-
-Returns MIME entity built from this attachment.
-
-=cut
-
-sub ContentAsMIME {
- my $self = shift;
-
- my $entity = new MIME::Entity;
- foreach my $header ($self->SplitHeaders) {
- my ($h_key, $h_val) = split /:/, $header, 2;
- $entity->head->add( $h_key, RT::Interface::Email::EncodeToMIME( String => $h_val ) );
- }
-
- use MIME::Body;
- $entity->bodyhandle(
- MIME::Body::Scalar->new( $self->OriginalContent )
- );
-
- return $entity;
-}
-
-
-=head2 Addresses
-
-Returns a hashref of all addresses related to this attachment.
-The keys of the hash are C<From>, C<To>, C<Cc>, C<Bcc>, C<RT-Send-Cc>
-and C<RT-Send-Bcc>. The values are references to lists of
-L<Email::Address> objects.
-
-=cut
-
-sub Addresses {
- my $self = shift;
-
- my %data = ();
- my $current_user_address = lc $self->CurrentUser->EmailAddress;
- foreach my $hdr (qw(From To Cc Bcc RT-Send-Cc RT-Send-Bcc)) {
- my @Addresses;
- my $line = $self->GetHeader($hdr);
-
- foreach my $AddrObj ( Email::Address->parse( $line )) {
- my $address = $AddrObj->address;
- $address = lc RT::User->CanonicalizeEmailAddress($address);
- next if $current_user_address eq $address;
- next if RT::EmailParser->IsRTAddress($address);
- push @Addresses, $AddrObj ;
- }
- $data{$hdr} = \@Addresses;
- }
- return \%data;
-}
-
-=head2 NiceHeaders
-
-Returns a multi-line string of the To, From, Cc, Date and Subject headers.
-
-=cut
-
-sub NiceHeaders {
- my $self = shift;
- my $hdrs = "";
- my @hdrs = $self->_SplitHeaders;
- while (my $str = shift @hdrs) {
- next unless $str =~ /^(To|From|RT-Send-Cc|Cc|Bcc|Date|Subject):/i;
- $hdrs .= $str . "\n";
- $hdrs .= shift( @hdrs ) . "\n" while ($hdrs[0] =~ /^[ \t]+/);
- }
- return $hdrs;
-}
-
-=head2 Headers
-
-Returns this object's headers as a string. This method specifically
-removes the RT-Send-Bcc: header, so as to never reveal to whom RT sent a Bcc.
-We need to record the RT-Send-Cc and RT-Send-Bcc values so that we can actually send
-out mail. The mailing rules are separated from the ticket update code by
-an abstraction barrier that makes it impossible to pass this data directly.
-
-=cut
-
-sub Headers {
- return join("\n", $_[0]->SplitHeaders);
-}
-
-=head2 EncodedHeaders
-
-Takes encoding as argument and returns the attachment's headers as octets in encoded
-using the encoding.
-
-This is not protection using quoted printable or base64 encoding.
-
-=cut
-
-sub EncodedHeaders {
- my $self = shift;
- my $encoding = shift || 'utf8';
- return Encode::encode( $encoding, $self->Headers );
-}
-
-=head2 GetHeader $TAG
-
-Returns the value of the header Tag as a string. This bypasses the weeding out
-done in Headers() above.
-
-=cut
-
-sub GetHeader {
- my $self = shift;
- my $tag = shift;
- foreach my $line ($self->_SplitHeaders) {
- next unless $line =~ /^\Q$tag\E:\s+(.*)$/si;
-
- #if we find the header, return its value
- return ($1);
- }
-
- # we found no header. return an empty string
- return undef;
-}
-
-=head2 DelHeader $TAG
-
-Delete a field from the attachment's headers.
-
-=cut
-
-sub DelHeader {
- my $self = shift;
- my $tag = shift;
-
- my $newheader = '';
- foreach my $line ($self->_SplitHeaders) {
- next if $line =~ /^\Q$tag\E:\s+(.*)$/is;
- $newheader .= "$line\n";
- }
- return $self->__Set( Field => 'Headers', Value => $newheader);
-}
-
-=head2 AddHeader $TAG, $VALUE, ...
-
-Add one or many fields to the attachment's headers.
-
-=cut
-
-sub AddHeader {
- my $self = shift;
-
- my $newheader = $self->__Value( 'Headers' );
- while ( my ($tag, $value) = splice @_, 0, 2 ) {
- $value = '' unless defined $value;
- $value =~ s/\s+$//s;
- $value =~ s/\r+\n/\n /g;
- $newheader .= "$tag: $value\n";
- }
- return $self->__Set( Field => 'Headers', Value => $newheader);
-}
-
-=head2 SetHeader ( 'Tag', 'Value' )
-
-Replace or add a Header to the attachment's headers.
-
-=cut
-
-sub SetHeader {
- my $self = shift;
- my $tag = shift;
-
- my $newheader = '';
- foreach my $line ($self->_SplitHeaders) {
- if (defined $tag and $line =~ /^\Q$tag\E:\s+(.*)$/i) {
- $newheader .= "$tag: $_[0]\n";
- undef $tag;
- }
- else {
- $newheader .= "$line\n";
- }
- }
-
- $newheader .= "$tag: $_[0]\n" if defined $tag;
- $self->__Set( Field => 'Headers', Value => $newheader);
-}
-
-=head2 SplitHeaders
-
-Returns an array of this attachment object's headers, with one header
-per array entry. Multiple lines are folded.
-
-B<Never> returns C<RT-Send-Bcc> field.
-
-=cut
-
-sub SplitHeaders {
- my $self = shift;
- return (grep !/^RT-Send-Bcc/i, $self->_SplitHeaders(@_) );
-}
-
-=head2 _SplitHeaders
-
-Returns an array of this attachment object's headers, with one header
-per array entry. multiple lines are folded.
-
-
-=cut
-
-sub _SplitHeaders {
- my $self = shift;
- my $headers = (shift || $self->SUPER::Headers());
- my @headers;
- for (split(/\n(?=\w|\z)/,$headers)) {
- push @headers, $_;
-
- }
- return(@headers);
-}
-
-
-sub Encrypt {
- my $self = shift;
-
- my $txn = $self->TransactionObj;
- return (0, $self->loc('Permission Denied')) unless $txn->CurrentUserCanSee;
- return (0, $self->loc('Permission Denied'))
- unless $txn->TicketObj->CurrentUserHasRight('ModifyTicket');
- return (0, $self->loc('GnuPG integration is disabled'))
- unless RT->Config->Get('GnuPG')->{'Enable'};
- return (0, $self->loc('Attachments encryption is disabled'))
- unless RT->Config->Get('GnuPG')->{'AllowEncryptDataInDB'};
-
- require RT::Crypt::GnuPG;
-
- my $type = $self->ContentType;
- if ( $type =~ /^x-application-rt\/gpg-encrypted/i ) {
- return (1, $self->loc('Already encrypted'));
- } elsif ( $type =~ /^multipart\//i ) {
- return (1, $self->loc('No need to encrypt'));
- } else {
- $type = qq{x-application-rt\/gpg-encrypted; original-type="$type"};
- }
-
- my $queue = $txn->TicketObj->QueueObj;
- my $encrypt_for;
- foreach my $address ( grep $_,
- $queue->CorrespondAddress,
- $queue->CommentAddress,
- RT->Config->Get('CorrespondAddress'),
- RT->Config->Get('CommentAddress'),
- ) {
- my %res = RT::Crypt::GnuPG::GetKeysInfo( $address, 'private' );
- next if $res{'exit_code'} || !$res{'info'};
- %res = RT::Crypt::GnuPG::GetKeysForEncryption( $address );
- next if $res{'exit_code'} || !$res{'info'};
- $encrypt_for = $address;
- }
- unless ( $encrypt_for ) {
- return (0, $self->loc('No key suitable for encryption'));
- }
-
- $self->__Set( Field => 'ContentType', Value => $type );
- $self->SetHeader( 'Content-Type' => $type );
-
- my $content = $self->Content;
- my %res = RT::Crypt::GnuPG::SignEncryptContent(
- Content => \$content,
- Sign => 0,
- Encrypt => 1,
- Recipients => [ $encrypt_for ],
- );
- if ( $res{'exit_code'} ) {
- return (0, $self->loc('GnuPG error. Contact with administrator'));
- }
-
- my ($status, $msg) = $self->__Set( Field => 'Content', Value => $content );
- unless ( $status ) {
- return ($status, $self->loc("Couldn't replace content with encrypted data: [_1]", $msg));
- }
- return (1, $self->loc('Successfuly encrypted data'));
-}
-
-sub Decrypt {
- my $self = shift;
-
- my $txn = $self->TransactionObj;
- return (0, $self->loc('Permission Denied')) unless $txn->CurrentUserCanSee;
- return (0, $self->loc('Permission Denied'))
- unless $txn->TicketObj->CurrentUserHasRight('ModifyTicket');
- return (0, $self->loc('GnuPG integration is disabled'))
- unless RT->Config->Get('GnuPG')->{'Enable'};
-
- require RT::Crypt::GnuPG;
-
- my $type = $self->ContentType;
- if ( $type =~ /^x-application-rt\/gpg-encrypted/i ) {
- ($type) = ($type =~ /original-type="(.*)"/i);
- $type ||= 'application/octeat-stream';
- } else {
- return (1, $self->loc('Is not encrypted'));
- }
- $self->__Set( Field => 'ContentType', Value => $type );
- $self->SetHeader( 'Content-Type' => $type );
-
- my $content = $self->Content;
- my %res = RT::Crypt::GnuPG::DecryptContent( Content => \$content, );
- if ( $res{'exit_code'} ) {
- return (0, $self->loc('GnuPG error. Contact with administrator'));
- }
-
- my ($status, $msg) = $self->__Set( Field => 'Content', Value => $content );
- unless ( $status ) {
- return ($status, $self->loc("Couldn't replace content with decrypted data: [_1]", $msg));
- }
- return (1, $self->loc('Successfuly decrypted data'));
-}
-
-=head2 _Value
-
-Takes the name of a table column.
-Returns its value as a string, if the user passes an ACL check
-
-=cut
-
-sub _Value {
- my $self = shift;
- my $field = shift;
-
- #if the field is public, return it.
- if ( $self->_Accessible( $field, 'public' ) ) {
- return ( $self->__Value( $field, @_ ) );
- }
-
- return undef unless $self->TransactionObj->CurrentUserCanSee;
- return $self->__Value( $field, @_ );
-}
-
-# Transactions don't change. by adding this cache congif directiove,
-# we don't lose pathalogically on long tickets.
-sub _CacheConfig {
- {
- 'cache_p' => 1,
- 'fast_update_p' => 1,
- 'cache_for_sec' => 180,
- }
-}
-
-1;
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