Local MailFrom that uses ExternalAuth to GetUser

MailFrom only checks RT to find user from mail. Modified so that
the local version looksup RT::Authen::ExternalAuth::LDAP to lookup
the email.

diff --git a/local/lib/RT/Interface/Email/Auth/MailFrom.pm b/local/lib/RT/Interface/Email/Auth/MailFrom.pm
new file mode 100644 (file)
index 0000000..b0b9b04
--- /dev/null
+++ b/local/lib/RT/Interface/Email/Auth/MailFrom.pm
@@ -0,0 +1,204 @@
+# BEGIN BPS TAGGED BLOCK {{{
+#
+# COPYRIGHT:
+#
+# This software is Copyright (c) 1996-2012 Best Practical Solutions, LLC
+#                                          <sales@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+# (Except where explicitly superseded by other copyright notices)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 }}}
+
+# Modified to lookup email-addresses using RT::Auth::ExternalAuth.
+# Local modification for UiO.
+# - mikalkg 2012-07-24
+
+package RT::Interface::Email::Auth::MailFrom;
+
+use strict;
+use warnings;
+
+use RT::Interface::Email qw(ParseSenderAddressFromHead CreateUser);
+
+# This is what the ordinary, non-enhanced gateway does at the moment.
+
+sub GetCurrentUser {
+    my %args = ( Message     => undef,
+                 CurrentUser => undef,
+                 AuthLevel   => undef,
+                 Ticket      => undef,
+                 Queue       => undef,
+                 Action      => undef,
+                 @_ );
+
+
+    # We don't need to do any external lookups
+    my ( $Address, $Name ) = ParseSenderAddressFromHead( $args{'Message'}->head );
+    unless ( $Address ) {
+        $RT::Logger->error("Couldn't find sender's address");
+        return ( $args{'CurrentUser'}, -1 );
+    }
+
+    my $CurrentUser = RT::CurrentUser->new;
+    $CurrentUser->LoadByEmail( $Address );
+    $CurrentUser->LoadByName( $Address ) unless $CurrentUser->Id;
+
+    # Local mod for the LDAP lookup goes here:
+    
+    unless ($CurrentUser->Id) {
+        my ( $found, %params );
+        while (not $found) {
+            my @auth_services = @$RT::ExternalAuthPriority;
+            for my $service (@auth_services) {
+                my $config = $RT::ExternalSettings->{$service};
+                my $lookup_attr = $config->{'lookup_attr_map'}->{'EmailAddress'};
+                next unless ($config->{'type'} eq 'ldap');
+                ($found, %params) = 
+                RT::Authen::ExternalAuth::LDAP::CanonicalizeUserInfo ( $service, $lookup_attr, $Address );
+                $CurrentUser->LoadByName( %params->{'Name'} ) if $found;
+            }
+        }
+    }
+
+    if ( $CurrentUser->Id ) {
+        $RT::Logger->debug("Mail from user #". $CurrentUser->Id ." ($Address)" );
+        return ( $CurrentUser, 1 );
+    }
+
+    # If the user can't be loaded, we may need to create one. Figure out the acl situation.
+    my $unpriv = RT->UnprivilegedUsers();
+    unless ( $unpriv->Id ) {
+        $RT::Logger->crit("Couldn't find the 'Unprivileged' internal group");
+        return ( $args{'CurrentUser'}, -1 );
+    }
+
+    my $everyone = RT::Group->new( RT->SystemUser );
+    $everyone->LoadSystemInternalGroup('Everyone');
+    unless ( $everyone->Id ) {
+        $RT::Logger->crit("Couldn't find the 'Everyone' internal group");
+        return ( $args{'CurrentUser'}, -1 );
+    }
+
+    $RT::Logger->debug("Going to create user with address '$Address'" );
+
+    # but before we do that, we need to make sure that the created user would have the right
+    # to do what we're doing.
+    if ( $args{'Ticket'} && $args{'Ticket'}->Id ) {
+        my $qname = $args{'Queue'}->Name;
+        # We have a ticket. that means we're commenting or corresponding
+        if ( $args{'Action'} =~ /^comment$/i ) {
+
+            # check to see whether "Everyone" or "Unprivileged users" can comment on tickets
+            unless ( $everyone->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                        Right => 'CommentOnTicket' )
+                     || $unpriv->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                         Right => 'CommentOnTicket' ) )
+            {
+                $RT::Logger->debug("Unprivileged users have no right to comment on ticket in queue '$qname'");
+                return ( $args{'CurrentUser'}, 0 );
+            }
+        }
+        elsif ( $args{'Action'} =~ /^correspond$/i ) {
+
+            # check to see whether "Everybody" or "Unprivileged users" can correspond on tickets
+            unless ( $everyone->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                        Right  => 'ReplyToTicket' )
+                     || $unpriv->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                         Right  => 'ReplyToTicket' ) )
+            {
+                $RT::Logger->debug("Unprivileged users have no right to reply to ticket in queue '$qname'");
+                return ( $args{'CurrentUser'}, 0 );
+            }
+        }
+        elsif ( $args{'Action'} =~ /^take$/i ) {
+
+            # check to see whether "Everybody" or "Unprivileged users" can correspond on tickets
+            unless ( $everyone->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                        Right  => 'OwnTicket' )
+                     || $unpriv->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                         Right  => 'OwnTicket' ) )
+            {
+                $RT::Logger->debug("Unprivileged users have no right to own ticket in queue '$qname'");
+                return ( $args{'CurrentUser'}, 0 );
+            }
+
+        }
+        elsif ( $args{'Action'} =~ /^resolve$/i ) {
+
+            # check to see whether "Everybody" or "Unprivileged users" can correspond on tickets
+            unless ( $everyone->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                        Right  => 'ModifyTicket' )
+                     || $unpriv->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                         Right  => 'ModifyTicket' ) )
+            {
+                $RT::Logger->debug("Unprivileged users have no right to resolve ticket in queue '$qname'");
+                return ( $args{'CurrentUser'}, 0 );
+            }
+
+        }
+        else {
+            $RT::Logger->warning("Action '". ($args{'Action'}||'') ."' is unknown");
+            return ( $args{'CurrentUser'}, 0 );
+        }
+    }
+
+    # We're creating a ticket
+    elsif ( $args{'Queue'} && $args{'Queue'}->Id ) {
+        my $qname = $args{'Queue'}->Name;
+
+        # check to see whether "Everybody" or "Unprivileged users" can create tickets in this queue
+        unless ( $everyone->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                    Right  => 'CreateTicket' )
+                 || $unpriv->PrincipalObj->HasRight( Object => $args{'Queue'},
+                                                     Right  => 'CreateTicket' ) )
+        {
+            $RT::Logger->debug("Unprivileged users have no right to create ticket in queue '$qname'");
+            return ( $args{'CurrentUser'}, 0 );
+        }
+    }
+
+    $CurrentUser = CreateUser( undef, $Address, $Name, $Address, $args{'Message'} );
+
+    return ( $CurrentUser, 1 );
+}
+
+RT::Base->_ImportOverlays();
+
+1;