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-# BEGIN LICENSE BLOCK
-#
-# Copyright (c) 1996-2003 Jesse Vincent <jesse@bestpractical.com>
-#
-# (Except where explictly superceded by other copyright notices)
-#
-# 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.
-#
-# Unless otherwise specified, all modifications, corrections or
-# extensions to this work which alter its source code become the
-# property of Best Practical Solutions, LLC when submitted for
-# inclusion in the work.
-#
-#
-# END LICENSE BLOCK
-package RT::EmailParser;
-
-
-use base qw/RT::Base/;
-
-use strict;
-use Mail::Address;
-use MIME::Entity;
-use MIME::Head;
-use MIME::Parser;
-use File::Temp qw/tempdir/;
-
-=head1 NAME
-
- RT::Interface::CLI - helper functions for creating a commandline RT interface
-
-=head1 SYNOPSIS
-
-
-=head1 DESCRIPTION
-
-
-=begin testing
-
-ok(require RT::EmailParser);
-
-=end testing
-
-
-=head1 METHODS
-
-=head2 new
-
-
-=cut
-
-sub new {
- my $proto = shift;
- my $class = ref($proto) || $proto;
- my $self = {};
- bless ($self, $class);
- return $self;
-}
-
-
-
-# {{{ sub debug
-
-sub debug {
- my $val = shift;
- my ($debug);
- if ($val) {
- $RT::Logger->debug( $val . "\n" );
- if ($debug) {
- print STDERR "$val\n";
- }
- }
- if ($debug) {
- return (1);
- }
-}
-
-# }}}
-
-# {{{ sub CheckForLoops
-
-sub CheckForLoops {
- my $self = shift;
-
- my $head = $self->Head;
-
- #If this instance of RT sent it our, we don't want to take it in
- my $RTLoop = $head->get("X-RT-Loop-Prevention") || "";
- chomp($RTLoop); #remove that newline
- if ( $RTLoop =~ /^\Q$RT::rtname\E/o ) {
- return (1);
- }
-
- # TODO: We might not trap the case where RT instance A sends a mail
- # to RT instance B which sends a mail to ...
- return (undef);
-}
-
-# }}}
-
-# {{{ sub CheckForSuspiciousSender
-
-sub CheckForSuspiciousSender {
- my $self = shift;
-
- #if it's from a postmaster or mailer daemon, it's likely a bounce.
-
- #TODO: better algorithms needed here - there is no standards for
- #bounces, so it's very difficult to separate them from anything
- #else. At the other hand, the Return-To address is only ment to be
- #used as an error channel, we might want to put up a separate
- #Return-To address which is treated differently.
-
- #TODO: search through the whole email and find the right Ticket ID.
-
- my ( $From, $junk ) = $self->ParseSenderAddressFromHead();
-
- if ( ( $From =~ /^mailer-daemon/i ) or ( $From =~ /^postmaster/i ) ) {
- return (1);
-
- }
-
- return (undef);
-
-}
-
-# }}}
-
-# {{{ sub CheckForAutoGenerated
-sub CheckForAutoGenerated {
- my $self = shift;
- my $head = $self->Head;
-
- my $Precedence = $head->get("Precedence") || "";
- if ( $Precedence =~ /^(bulk|junk)/i ) {
- return (1);
- }
- else {
- return (undef);
- }
-}
-
-# }}}
-
-# {{{ sub ParseMIMEEntityFromSTDIN
-
-sub ParseMIMEEntityFromSTDIN {
- my $self = shift;
- return $self->ParseMIMEEntityFromFileHandle(\*STDIN);
-}
-
-# }}}
-
-=head2 ParseMIMEEntityFromScalar $message
-
-Takes either a scalar or a reference to a scalr which contains a stringified MIME message.
-Parses it.
-
-Returns true if it wins.
-Returns false if it loses.
-
-
-=cut
-
-sub ParseMIMEEntityFromScalar {
- my $self = shift;
- my $message = shift;
-
- $self->_DoParse('parse_data', $message);
-
-}
-
-# {{{ ParseMIMEEntityFromFilehandle *FH
-
-=head2 ParseMIMEEntityFromFilehandle *FH
-
-Parses a mime entity from a filehandle passed in as an argument
-
-=cut
-
-sub ParseMIMEEntityFromFileHandle {
- my $self = shift;
- my $filehandle = shift;
-
- $self->_DoParse('parse', $filehandle);
-
-}
-
-# }}}
-
-# {{{ ParseMIMEEntityFromFile
-
-=head2 ParseMIMEEntityFromFile
-
-Parses a mime entity from a filename passed in as an argument
-
-=cut
-
-sub ParseMIMEEntityFromFile {
- my $self = shift;
-
- my $file = shift;
- $self->_DoParse('parse_open', $file);
-}
-
-# }}}
-
-# {{{ _DoParse
-
-=head2 _DoParse PARSEMETHOD CONTENT
-
-
-A helper for the various parsers to turn around and do the dispatch to the actual parser
-
-=cut
-
-sub _DoParse {
- my $self = shift;
- my $method = shift;
- my $file = shift;
-
- # Create a new parser object:
-
- my $parser = MIME::Parser->new();
- $self->_SetupMIMEParser($parser);
-
-
- # TODO: XXX 3.0 we really need to wrap this in an eval { }
-
- unless ( $self->{'entity'} = $parser->$method($file) ) {
-
- # Try again, this time without extracting nested messages
- $parser->extract_nested_messages(0);
- unless ( $self->{'entity'} = $parser->$method($file) ) {
- $RT::Logger->crit("couldn't parse MIME stream");
- return ( undef);
- }
- }
- $self->_PostProcessNewEntity();
- return (1);
-}
-
-# }}}
-
-
-# {{{ _PostProcessNewEntity
-
-=head2 _PostProcessNewEntity
-
-cleans up and postprocesses a newly parsed MIME Entity
-
-=cut
-
-sub _PostProcessNewEntity {
- my $self = shift;
-
- #Now we've got a parsed mime object.
-
- # try to convert text parts into utf-8 charset
- RT::I18N::SetMIMEEntityToEncoding($self->{'entity'}, 'utf-8');
-
-
- # Unfold headers that are have embedded newlines
- $self->Head->unfold;
-
-
-}
-
-# }}}
-
-# {{{ sub ParseTicketId
-
-sub ParseTicketId {
- my $self = shift;
-
- my $Subject = shift;
-
- if ( $Subject =~ s/\[\Q$RT::rtname\E\s+\#(\d+)\s*\]//i ) {
- my $id = $1;
- $RT::Logger->debug("Found a ticket ID. It's $id");
- return ($id);
- }
- else {
- return (undef);
- }
-}
-
-# }}}
-
-# {{{ sub MailError
-
-=head2 MailError { }
-
-
-# TODO this doesn't belong here.
-# TODO doc this
-
-
-=cut
-
-
-sub MailError {
- my $self = shift;
-
- my %args = (
- To => $RT::OwnerEmail,
- Bcc => undef,
- From => $RT::CorrespondAddress,
- Subject => 'There has been an error',
- Explanation => 'Unexplained error',
- MIMEObj => undef,
- LogLevel => 'crit',
- @_
- );
-
- $RT::Logger->log(
- level => $args{'LogLevel'},
- message => $args{'Explanation'}
- );
- my $entity = MIME::Entity->build(
- Type => "multipart/mixed",
- From => $args{'From'},
- Bcc => $args{'Bcc'},
- To => $args{'To'},
- Subject => $args{'Subject'},
- 'X-RT-Loop-Prevention' => $RT::rtname,
- );
-
- $entity->attach( Data => $args{'Explanation'} . "\n" );
-
- my $mimeobj = $args{'MIMEObj'};
- $mimeobj->sync_headers();
- $entity->add_part($mimeobj);
-
- if ( $RT::MailCommand eq 'sendmailpipe' ) {
- open( MAIL, "|$RT::SendmailPath $RT::SendmailArguments" ) || return (0);
- print MAIL $entity->as_string;
- close(MAIL);
- }
- else {
- $entity->send( $RT::MailCommand, $RT::MailParams );
- }
-}
-
-# }}}
-
-
-
-# {{{ sub GetCurrentUser
-
-sub GetCurrentUser {
- my $self = shift;
- my $ErrorsTo = shift;
-
- my %UserInfo = ();
-
- #Suck the address of the sender out of the header
- my ( $Address, $Name ) = $self->ParseSenderAddressFromHead();
-
- my $tempuser = RT::User->new($RT::SystemUser);
-
- #This will apply local address canonicalization rules
- $Address = $tempuser->CanonicalizeEmailAddress($Address);
-
- #If desired, synchronize with an external database
- my $UserFoundInExternalDatabase = 0;
-
- # Username is the 'Name' attribute of the user that RT uses for things
- # like authentication
- my $Username = undef;
- ( $UserFoundInExternalDatabase, %UserInfo ) =
- $self->LookupExternalUserInfo( $Address, $Name );
-
- $Address = $UserInfo{'EmailAddress'};
- $Username = $UserInfo{'Name'};
-
- #Get us a currentuser object to work with.
- my $CurrentUser = RT::CurrentUser->new();
-
- # First try looking up by a username, if we got one from the external
- # db lookup. Next, try looking up by email address. Failing that,
- # try looking up by users who have this user's email address as their
- # username.
-
- if ($Username) {
- $CurrentUser->LoadByName($Username);
- }
-
- unless ( $CurrentUser->Id ) {
- $CurrentUser->LoadByEmail($Address);
- }
-
- #If we can't get it by email address, try by name.
- unless ( $CurrentUser->Id ) {
- $CurrentUser->LoadByName($Address);
- }
-
- unless ( $CurrentUser->Id ) {
-
- #If we couldn't load a user, determine whether to create a user
-
- # {{{ If we require an incoming address to be found in the external
- # user database, reject the incoming message appropriately
- if ( $RT::SenderMustExistInExternalDatabase
- && !$UserFoundInExternalDatabase ) {
-
- my $Message =
- "Sender's email address was not found in the user database.";
-
- # {{{ This code useful only if you've defined an AutoRejectRequest template
-
- require RT::Template;
- my $template = new RT::Template($RT::Nobody);
- $template->Load('AutoRejectRequest');
- $Message = $template->Content || $Message;
-
- # }}}
-
- MailError(
- To => $ErrorsTo,
- Subject => "Ticket Creation failed: user could not be created",
- Explanation => $Message,
- MIMEObj => $self->Entity,
- LogLevel => 'notice' );
-
- return ($CurrentUser);
-
- }
-
- # }}}
-
- else {
- my $NewUser = RT::User->new($RT::SystemUser);
-
- my ( $Val, $Message ) = $NewUser->Create(
- Name => ( $Username || $Address ),
- EmailAddress => $Address,
- RealName => "$Name",
- Password => undef,
- Privileged => 0,
- Comments => 'Autocreated on ticket submission'
- );
-
- unless ($Val) {
-
- # Deal with the race condition of two account creations at once
- #
- if ($Username) {
- $NewUser->LoadByName($Username);
- }
-
- unless ( $NewUser->Id ) {
- $NewUser->LoadByEmail($Address);
- }
-
- unless ( $NewUser->Id ) {
- MailError(To => $ErrorsTo,
- Subject => "User could not be created",
- Explanation =>
- "User creation failed in mailgateway: $Message",
- MIMEObj => $self->Entity,
- LogLevel => 'crit' );
- }
- }
- }
-
- #Load the new user object
- $CurrentUser->LoadByEmail($Address);
-
- unless ( $CurrentUser->id ) {
- $RT::Logger->warning(
- "Couldn't load user '$Address'." . "giving up" );
- MailError(
- To => $ErrorsTo,
- Subject => "User could not be loaded",
- Explanation =>
- "User '$Address' could not be loaded in the mail gateway",
- MIMEObj => $self->Entity,
- LogLevel => 'crit' );
-
- }
- }
-
- return ($CurrentUser);
-
-}
-
-# }}}
-
-
-# {{{ ParseCcAddressesFromHead
-
-=head2 ParseCcAddressesFromHead HASHREF
-
-Takes a hashref object containing QueueObj, Head and CurrentUser objects.
-Returns a list of all email addresses in the To and Cc
-headers b<except> the current Queue\'s email addresses, the CurrentUser\'s
-email address and anything that the $RTAddressRegexp matches.
-
-=cut
-
-sub ParseCcAddressesFromHead {
-
- my $self = shift;
-
- my %args = (
- QueueObj => undef,
- CurrentUser => undef,
- @_
- );
-
- my (@Addresses);
-
- my @ToObjs = Mail::Address->parse( $self->Head->get('To') );
- my @CcObjs = Mail::Address->parse( $self->Head->get('Cc') );
-
- foreach my $AddrObj ( @ToObjs, @CcObjs ) {
- my $Address = $AddrObj->address;
- my $user = RT::User->new($RT::SystemUser);
- $Address = $user->CanonicalizeEmailAddress($Address);
- next if ( $args{'CurrentUser'}->EmailAddress =~ /^$Address$/i );
- next if ( $args{'QueueObj'}->CorrespondAddress =~ /^$Address$/i );
- next if ( $args{'QueueObj'}->CommentAddress =~ /^$Address$/i );
- next if ( IsRTAddress($Address) );
-
- push ( @Addresses, $Address );
- }
- return (@Addresses);
-}
-
-# }}}
-
-# {{{ ParseSenderAdddressFromHead
-
-=head2 ParseSenderAddressFromHead
-
-Takes a MIME::Header object. Returns a tuple: (user@host, friendly name)
-of the From (evaluated in order of Reply-To:, From:, Sender)
-
-=cut
-
-sub ParseSenderAddressFromHead {
- my $self = shift;
-
- #Figure out who's sending this message.
- my $From = $self->Head->get('Reply-To')
- || $self->Head->get('From')
- || $self->Head->get('Sender');
- return ( $self->ParseAddressFromHeader($From) );
-}
-
-# }}}
-
-# {{{ ParseErrorsToAdddressFromHead
-
-=head2 ParseErrorsToAddressFromHead
-
-Takes a MIME::Header object. Return a single value : user@host
-of the From (evaluated in order of Errors-To:,Reply-To:, From:, Sender)
-
-=cut
-
-sub ParseErrorsToAddressFromHead {
- my $self = shift;
-
- #Figure out who's sending this message.
-
- foreach my $header ( 'Errors-To', 'Reply-To', 'From', 'Sender' ) {
-
- # If there's a header of that name
- my $headerobj = $self->Head->get($header);
- if ($headerobj) {
- my ( $addr, $name ) = $self->ParseAddressFromHeader($headerobj);
-
- # If it's got actual useful content...
- return ($addr) if ($addr);
- }
- }
-}
-
-# }}}
-
-# {{{ ParseAddressFromHeader
-
-=head2 ParseAddressFromHeader ADDRESS
-
-Takes an address from $self->Head->get('Line') and returns a tuple: user@host, friendly name
-
-=cut
-
-sub ParseAddressFromHeader {
- my $self = shift;
- my $Addr = shift;
-
- my @Addresses = Mail::Address->parse($Addr);
-
- my $AddrObj = $Addresses[0];
-
- unless ( ref($AddrObj) ) {
- return ( undef, undef );
- }
-
- my $Name = ( $AddrObj->phrase || $AddrObj->comment || $AddrObj->address );
-
- #Lets take the from and load a user object.
- my $Address = $AddrObj->address;
-
- return ( $Address, $Name );
-}
-
-# }}}
-
-# {{{ IsRTAddress
-
-=item IsRTaddress ADDRESS
-
-Takes a single parameter, an email address.
-Returns true if that address matches the $RTAddressRegexp.
-Returns false, otherwise.
-
-=begin testing
-
-is(RT::EmailParser::IsRTAddress("","rt\@example.com"),1, "Regexp matched rt address" );
-is(RT::EmailParser::IsRTAddress("","frt\@example.com"),undef, "Regexp didn't match non-rt address" );
-
-=end testing
-
-=cut
-
-sub IsRTAddress {
- my $self = shift;
- my $address = shift;
-
- # Example: the following rule would tell RT not to Cc
- # "tickets@noc.example.com"
- if ( defined($RT::RTAddressRegexp) &&
- $address =~ /$RT::RTAddressRegexp/ ) {
- return(1);
- } else {
- return (undef);
- }
-}
-
-# }}}
-
-
-# {{{ CullRTAddresses
-
-=item CullRTAddresses ARRAY
-
-Takes a single argument, an array of email addresses.
-Returns the same array with any IsRTAddress()es weeded out.
-
-=begin testing
-
-@before = ("rt\@example.com", "frt\@example.com");
-@after = ("frt\@example.com");
-ok(eq_array(RT::EmailParser::CullRTAddresses("",@before),@after), "CullRTAddresses only culls RT addresses");
-
-=end testing
-
-=cut
-
-sub CullRTAddresses {
- my $self = shift;
- my @addresses= (@_);
- my @addrlist;
-
- foreach my $addr( @addresses ) {
- push (@addrlist, $addr) unless IsRTAddress("", $addr);
- }
- return (@addrlist);
-}
-
-# }}}
-
-
-# {{{ LookupExternalUserInfo
-
-
-# LookupExternalUserInfo is a site-definable method for synchronizing
-# incoming users with an external data source.
-#
-# This routine takes a tuple of EmailAddress and FriendlyName
-# EmailAddress is the user's email address, ususally taken from
-# an email message's From: header.
-# FriendlyName is a freeform string, ususally taken from the "comment"
-# portion of an email message's From: header.
-#
-# If you define an AutoRejectRequest template, RT will use this
-# template for the rejection message.
-
-
-=item LookupExternalUserInfo
-
- LookupExternalUserInfo is a site-definable method for synchronizing
- incoming users with an external data source.
-
- This routine takes a tuple of EmailAddress and FriendlyName
- EmailAddress is the user's email address, ususally taken from
- an email message's From: header.
- FriendlyName is a freeform string, ususally taken from the "comment"
- portion of an email message's From: header.
-
- It returns (FoundInExternalDatabase, ParamHash);
-
- FoundInExternalDatabase must be set to 1 before return if the user was
- found in the external database.
-
- ParamHash is a Perl parameter hash which can contain at least the following
- fields. These fields are used to populate RT's users database when the user
- is created
-
- EmailAddress is the email address that RT should use for this user.
- Name is the 'Name' attribute RT should use for this user.
- 'Name' is used for things like access control and user lookups.
- RealName is what RT should display as the user's name when displaying
- 'friendly' names
-
-=cut
-
-sub LookupExternalUserInfo {
- my $self = shift;
- my $EmailAddress = shift;
- my $RealName = shift;
-
- my $FoundInExternalDatabase = 1;
- my %params;
-
- #Name is the RT username you want to use for this user.
- $params{'Name'} = $EmailAddress;
- $params{'EmailAddress'} = $EmailAddress;
- $params{'RealName'} = $RealName;
-
- # See RT's contributed code for examples.
- # http://www.fsck.com/pub/rt/contrib/
- return ($FoundInExternalDatabase, %params);
-}
-
-# }}}
-
-# {{{ Accessor methods for parsed email messages
-
-=head2 Head
-
-Return the parsed head from this message
-
-=cut
-
-sub Head {
- my $self = shift;
- return $self->Entity->head;
-}
-
-=head2 Entity
-
-Return the parsed Entity from this message
-
-=cut
-
-sub Entity {
- my $self = shift;
- return $self->{'entity'};
-}
-
-# }}}
-# {{{ _SetupMIMEParser
-
-=head2 _SetupMIMEParser $parser
-
-A private instance method which sets up a mime parser to do its job
-
-=cut
-
-
- ## TODO: Does it make sense storing to disk at all? After all, we
- ## need to put each msg as an in-core scalar before saving it to
- ## the database, don't we?
-
- ## At the same time, we should make sure that we nuke attachments
- ## Over max size and return them
-
-sub _SetupMIMEParser {
- my $self = shift;
- my $parser = shift;
- my $AttachmentDir = File::Temp::tempdir( TMPDIR => 1, CLEANUP => 1 );
-
- # Set up output directory for files:
- $parser->output_dir("$AttachmentDir");
- $parser->filer->ignore_filename(1);
-
-
- #If someone includes a message, extract it
- $parser->extract_nested_messages(1);
-
- $parser->extract_uuencode(1); ### default is false
-
- # Set up the prefix for files with auto-generated names:
- $parser->output_prefix("part");
-
- # do _not_ store each msg as in-core scalar;
-
- $parser->output_to_core(0);
-}
-# }}}
-
-eval "require RT::EmailParser_Vendor";
-die $@ if ($@ && $@ !~ qr{^Can't locate RT/EmailParser_Vendor.pm});
-eval "require RT::EmailParser_Local";
-die $@ if ($@ && $@ !~ qr{^Can't locate RT/EmailParser_Local.pm});
-
-1;
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