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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-# (Except where explicitly superseded by other copyright notices)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::ACE;
- my $ace = new RT::ACE($CurrentUser);
-
-
-=head1 DESCRIPTION
-
-
-
-=head1 METHODS
-
-
-=cut
-
-
-package RT::ACE;
-
-use strict;
-no warnings qw(redefine);
-use RT::Principals;
-use RT::Queues;
-use RT::Groups;
-
-use vars qw (
- %LOWERCASERIGHTNAMES
- %OBJECT_TYPES
- %TICKET_METAPRINCIPALS
-);
-
-
-# {{{ Descriptions of rights
-
-=head1 Rights
-
-# Queue rights are the sort of queue rights that can only be granted
-# to real people or groups
-
-
-
-=cut
-
-
-
-
-# }}}
-
-# {{{ Descriptions of principals
-
-%TICKET_METAPRINCIPALS = (
- Owner => 'The owner of a ticket', # loc_pair
- Requestor => 'The requestor of a ticket', # loc_pair
- Cc => 'The CC of a ticket', # loc_pair
- AdminCc => 'The administrative CC of a ticket', # loc_pair
-);
-
-# }}}
-
-
-# {{{ sub LoadByValues
-
-=head2 LoadByValues PARAMHASH
-
-Load an ACE by specifying a paramhash with the following fields:
-
- PrincipalId => undef,
- PrincipalType => undef,
- RightName => undef,
-
- And either:
-
- Object => undef,
-
- OR
-
- ObjectType => undef,
- ObjectId => undef
-
-=cut
-
-sub LoadByValues {
- my $self = shift;
- my %args = ( PrincipalId => undef,
- PrincipalType => undef,
- RightName => undef,
- Object => undef,
- ObjectId => undef,
- ObjectType => undef,
- @_ );
-
- if ( $args{'RightName'} ) {
- my $canonic_name = $self->CanonicalizeRightName( $args{'RightName'} );
- unless ( $canonic_name ) {
- return ( 0, $self->loc("Invalid right. Couldn't canonicalize right '[_1]'", $args{'RightName'}) );
- }
- $args{'RightName'} = $canonic_name;
- }
-
- my $princ_obj;
- ( $princ_obj, $args{'PrincipalType'} ) =
- $self->_CanonicalizePrincipal( $args{'PrincipalId'},
- $args{'PrincipalType'} );
-
- unless ( $princ_obj->id ) {
- return ( 0,
- $self->loc( 'Principal [_1] not found.', $args{'PrincipalId'} )
- );
- }
-
- my ($object, $object_type, $object_id) = $self->_ParseObjectArg( %args );
- unless( $object ) {
- return ( 0, $self->loc("System error. Right not granted.") );
- }
-
- $self->LoadByCols( PrincipalId => $princ_obj->Id,
- PrincipalType => $args{'PrincipalType'},
- RightName => $args{'RightName'},
- ObjectType => $object_type,
- ObjectId => $object_id);
-
- #If we couldn't load it.
- unless ( $self->Id ) {
- return ( 0, $self->loc("ACE not found") );
- }
-
- # if we could
- return ( $self->Id, $self->loc("Right Loaded") );
-
-}
-
-# }}}
-
-# {{{ sub Create
-
-=head2 Create <PARAMS>
-
-PARAMS is a parameter hash with the following elements:
-
- PrincipalId => The id of an RT::Principal object
- PrincipalType => "User" "Group" or any Role type
- RightName => the name of a right. in any case
- DelegatedBy => The Principal->Id of the user delegating the right
- DelegatedFrom => The id of the ACE which this new ACE is delegated from
-
-
- Either:
-
- Object => An object to create rights for. ususally, an RT::Queue or RT::Group
- This should always be a DBIx::SearchBuilder::Record subclass
-
- OR
-
- ObjectType => the type of the object in question (ref ($object))
- ObjectId => the id of the object in question $object->Id
-
-
-
- Returns a tuple of (STATUS, MESSAGE); If the call succeeded, STATUS is true. Otherwise it's false.
-
-
-
-=cut
-
-sub Create {
- my $self = shift;
- my %args = (
- PrincipalId => undef,
- PrincipalType => undef,
- RightName => undef,
- Object => undef,
- @_
- );
-
- unless ( $args{'RightName'} ) {
- return ( 0, $self->loc('No right specified') );
- }
-
- #if we haven't specified any sort of right, we're talking about a global right
- if (!defined $args{'Object'} && !defined $args{'ObjectId'} && !defined $args{'ObjectType'}) {
- $args{'Object'} = $RT::System;
- }
- ($args{'Object'}, $args{'ObjectType'}, $args{'ObjectId'}) = $self->_ParseObjectArg( %args );
- unless( $args{'Object'} ) {
- return ( 0, $self->loc("System error. Right not granted.") );
- }
-
- # {{{ Validate the principal
- my $princ_obj;
- ( $princ_obj, $args{'PrincipalType'} ) =
- $self->_CanonicalizePrincipal( $args{'PrincipalId'},
- $args{'PrincipalType'} );
-
- unless ( $princ_obj->id ) {
- return ( 0,
- $self->loc( 'Principal [_1] not found.', $args{'PrincipalId'} )
- );
- }
-
- # }}}
-
- # {{{ Check the ACL
-
- if (ref( $args{'Object'}) eq 'RT::Group' ) {
- unless ( $self->CurrentUser->HasRight( Object => $args{'Object'},
- Right => 'AdminGroup' )
- ) {
- return ( 0, $self->loc('Permission Denied') );
- }
- }
-
- else {
- unless ( $self->CurrentUser->HasRight( Object => $args{'Object'}, Right => 'ModifyACL' )) {
- return ( 0, $self->loc('Permission Denied') );
- }
- }
- # }}}
-
- # {{{ Canonicalize and check the right name
- my $canonic_name = $self->CanonicalizeRightName( $args{'RightName'} );
- unless ( $canonic_name ) {
- return ( 0, $self->loc("Invalid right. Couldn't canonicalize right '[_1]'", $args{'RightName'}) );
- }
- $args{'RightName'} = $canonic_name;
-
- #check if it's a valid RightName
- if ( $args{'Object'}->can('AvailableRights') ) {
- my $available = $args{'Object'}->AvailableRights;
- unless ( grep $_ eq $args{'RightName'}, map $self->CanonicalizeRightName( $_ ), keys %$available ) {
- $RT::Logger->warning(
- "Couldn't validate right name '$args{'RightName'}'"
- ." for object of ". ref( $args{'Object'} ) ." class"
- );
- return ( 0, $self->loc('Invalid right') );
- }
- }
- # }}}
-
- # Make sure the right doesn't already exist.
- $self->LoadByCols( PrincipalId => $princ_obj->id,
- PrincipalType => $args{'PrincipalType'},
- RightName => $args{'RightName'},
- ObjectType => $args{'ObjectType'},
- ObjectId => $args{'ObjectId'},
- DelegatedBy => 0,
- DelegatedFrom => 0 );
- if ( $self->Id ) {
- return ( 0, $self->loc('That principal already has that right') );
- }
-
- my $id = $self->SUPER::Create( PrincipalId => $princ_obj->id,
- PrincipalType => $args{'PrincipalType'},
- RightName => $args{'RightName'},
- ObjectType => ref( $args{'Object'} ),
- ObjectId => $args{'Object'}->id,
- DelegatedBy => 0,
- DelegatedFrom => 0 );
-
- #Clear the key cache. TODO someday we may want to just clear a little bit of the keycache space.
- RT::Principal->InvalidateACLCache();
-
- if ( $id ) {
- return ( $id, $self->loc('Right Granted') );
- }
- else {
- return ( 0, $self->loc('System error. Right not granted.') );
- }
-}
-
-# }}}
-
-# {{{ sub Delegate
-
-=head2 Delegate <PARAMS>
-
-This routine delegates the current ACE to a principal specified by the
-B<PrincipalId> parameter.
-
-Returns an error if the current user doesn't have the right to be delegated
-or doesn't have the right to delegate rights.
-
-Always returns a tuple of (ReturnValue, Message)
-
-
-=cut
-
-sub Delegate {
- my $self = shift;
- my %args = ( PrincipalId => undef,
- @_ );
-
- unless ( $self->Id ) {
- return ( 0, $self->loc("Right not loaded.") );
- }
- my $princ_obj;
- ( $princ_obj, $args{'PrincipalType'} ) =
- $self->_CanonicalizePrincipal( $args{'PrincipalId'},
- $args{'PrincipalType'} );
-
- unless ( $princ_obj->id ) {
- return ( 0,
- $self->loc( 'Principal [_1] not found.', $args{'PrincipalId'} )
- );
- }
-
- # }}}
-
- # {{{ Check the ACL
-
- # First, we check to se if the user is delegating rights and
- # they have the permission to
- unless ( $self->CurrentUser->HasRight(Right => 'DelegateRights', Object => $self->Object) ) {
- return ( 0, $self->loc("Permission Denied") );
- }
-
- unless ( $self->PrincipalObj->IsGroup ) {
- return ( 0, $self->loc("System Error") );
- }
- unless ( $self->PrincipalObj->Object->HasMemberRecursively(
- $self->CurrentUser->PrincipalObj
- )
- ) {
- return ( 0, $self->loc("Permission Denied") );
- }
-
- # }}}
-
- my $concurrency_check = RT::ACE->new($RT::SystemUser);
- $concurrency_check->Load( $self->Id );
- unless ( $concurrency_check->Id ) {
- $RT::Logger->crit(
- "Trying to delegate a right which had already been deleted");
- return ( 0, $self->loc('Permission Denied') );
- }
-
- my $delegated_ace = RT::ACE->new( $self->CurrentUser );
-
- # Make sure the right doesn't already exist.
- $delegated_ace->LoadByCols( PrincipalId => $princ_obj->Id,
- PrincipalType => 'Group',
- RightName => $self->__Value('RightName'),
- ObjectType => $self->__Value('ObjectType'),
- ObjectId => $self->__Value('ObjectId'),
- DelegatedBy => $self->CurrentUser->PrincipalId,
- DelegatedFrom => $self->id );
- if ( $delegated_ace->Id ) {
- return ( 0, $self->loc('That principal already has that right') );
- }
- my $id = $delegated_ace->SUPER::Create(
- PrincipalId => $princ_obj->Id,
- PrincipalType => 'Group', # do we want to hardcode this?
- RightName => $self->__Value('RightName'),
- ObjectType => $self->__Value('ObjectType'),
- ObjectId => $self->__Value('ObjectId'),
- DelegatedBy => $self->CurrentUser->PrincipalId,
- DelegatedFrom => $self->id );
-
- #Clear the key cache. TODO someday we may want to just clear a little bit of the keycache space.
- # TODO what about the groups key cache?
- RT::Principal->InvalidateACLCache();
-
- if ( $id > 0 ) {
- return ( $id, $self->loc('Right Delegated') );
- }
- else {
- return ( 0, $self->loc('System error. Right not delegated.') );
- }
-}
-
-# }}}
-
-# {{{ sub Delete
-
-=head2 Delete { InsideTransaction => undef}
-
-Delete this object. This method should ONLY ever be called from RT::User or RT::Group (or from itself)
-If this is being called from within a transaction, specify a true value for the parameter InsideTransaction.
-Really, DBIx::SearchBuilder should use and/or fake subtransactions
-
-This routine will also recurse and delete any delegations of this right
-
-=cut
-
-sub Delete {
- my $self = shift;
-
- unless ( $self->Id ) {
- return ( 0, $self->loc('Right not loaded.') );
- }
-
- # A user can delete an ACE if the current user has the right to modify it and it's not a delegated ACE
- # or if it's a delegated ACE and it was delegated by the current user
- unless (
- ( $self->CurrentUser->HasRight(Right => 'ModifyACL', Object => $self->Object)
- && $self->__Value('DelegatedBy') == 0 )
- || ( $self->__Value('DelegatedBy') == $self->CurrentUser->PrincipalId )
- ) {
- return ( 0, $self->loc('Permission Denied') );
- }
- $self->_Delete(@_);
-}
-
-# Helper for Delete with no ACL check
-sub _Delete {
- my $self = shift;
- my %args = ( InsideTransaction => undef,
- @_ );
-
- my $InsideTransaction = $args{'InsideTransaction'};
-
- $RT::Handle->BeginTransaction() unless $InsideTransaction;
-
- my $delegated_from_this = RT::ACL->new($RT::SystemUser);
- $delegated_from_this->Limit( FIELD => 'DelegatedFrom',
- OPERATOR => '=',
- VALUE => $self->Id );
-
- my $delete_succeeded = 1;
- my $submsg;
- while ( my $delegated_ace = $delegated_from_this->Next ) {
- ( $delete_succeeded, $submsg ) =
- $delegated_ace->_Delete( InsideTransaction => 1 );
- last unless ($delete_succeeded);
- }
-
- unless ($delete_succeeded) {
- $RT::Handle->Rollback() unless $InsideTransaction;
- return ( 0, $self->loc('Right could not be revoked') );
- }
-
- my ( $val, $msg ) = $self->SUPER::Delete(@_);
-
- # If we're revoking delegation rights (see above), we may need to
- # revoke all rights delegated by the recipient.
- if ($val and ($self->RightName() eq 'DelegateRights' or
- $self->RightName() eq 'SuperUser')) {
- $val = $self->PrincipalObj->_CleanupInvalidDelegations( InsideTransaction => 1 );
- }
-
- if ($val) {
- #Clear the key cache. TODO someday we may want to just clear a little bit of the keycache space.
- # TODO what about the groups key cache?
- RT::Principal->InvalidateACLCache();
- $RT::Handle->Commit() unless $InsideTransaction;
- return ( $val, $self->loc('Right revoked') );
- }
-
- $RT::Handle->Rollback() unless $InsideTransaction;
- return ( 0, $self->loc('Right could not be revoked') );
-}
-
-# }}}
-
-# {{{ sub _BootstrapCreate
-
-=head2 _BootstrapCreate
-
-Grant a right with no error checking and no ACL. this is _only_ for
-installation. If you use this routine without the author's explicit
-written approval, he will hunt you down and make you spend eternity
-translating mozilla's code into FORTRAN or intercal.
-
-If you think you need this routine, you've mistaken.
-
-=cut
-
-sub _BootstrapCreate {
- my $self = shift;
- my %args = (@_);
-
- # When bootstrapping, make sure we get the _right_ users
- if ( $args{'UserId'} ) {
- my $user = RT::User->new( $self->CurrentUser );
- $user->Load( $args{'UserId'} );
- delete $args{'UserId'};
- $args{'PrincipalId'} = $user->PrincipalId;
- $args{'PrincipalType'} = 'User';
- }
-
- my $id = $self->SUPER::Create(%args);
-
- if ( $id > 0 ) {
- return ($id);
- }
- else {
- $RT::Logger->err('System error. right not granted.');
- return (undef);
- }
-
-}
-
-# }}}
-
-# {{{ sub CanonicalizeRightName
-
-sub RightName {
- my $self = shift;
- my $val = $self->_Value('RightName');
- return $val unless $val;
-
- my $available = $self->Object->AvailableRights;
- foreach my $right ( keys %$available ) {
- return $right if $val eq $self->CanonicalizeRightName($right);
- }
-
- $RT::Logger->error("Invalid right. Couldn't canonicalize right '$val'");
- return $val;
-}
-
-=head2 CanonicalizeRightName <RIGHT>
-
-Takes a queue or system right name in any case and returns it in
-the correct case. If it's not found, will return undef.
-
-=cut
-
-sub CanonicalizeRightName {
- my $self = shift;
- return $LOWERCASERIGHTNAMES{ lc shift };
-}
-
-# }}}
-
-
-# {{{ sub Object
-
-=head2 Object
-
-If the object this ACE applies to is a queue, returns the queue object.
-If the object this ACE applies to is a group, returns the group object.
-If it's the system object, returns undef.
-
-If the user has no rights, returns undef.
-
-=cut
-
-
-
-
-sub Object {
- my $self = shift;
-
- my $appliesto_obj;
-
- if ($self->__Value('ObjectType') && $OBJECT_TYPES{$self->__Value('ObjectType')} ) {
- $appliesto_obj = $self->__Value('ObjectType')->new($self->CurrentUser);
- unless (ref( $appliesto_obj) eq $self->__Value('ObjectType')) {
- return undef;
- }
- $appliesto_obj->Load( $self->__Value('ObjectId') );
- return ($appliesto_obj);
- }
- else {
- $RT::Logger->warning( "$self -> Object called for an object "
- . "of an unknown type:"
- . $self->__Value('ObjectType') );
- return (undef);
- }
-}
-
-# }}}
-
-# {{{ sub PrincipalObj
-
-=head2 PrincipalObj
-
-Returns the RT::Principal object for this ACE.
-
-=cut
-
-sub PrincipalObj {
- my $self = shift;
-
- my $princ_obj = RT::Principal->new( $self->CurrentUser );
- $princ_obj->Load( $self->__Value('PrincipalId') );
-
- unless ( $princ_obj->Id ) {
- $RT::Logger->err(
- "ACE " . $self->Id . " couldn't load its principal object" );
- }
- return ($princ_obj);
-
-}
-
-# }}}
-
-# {{{ ACL related methods
-
-# {{{ sub _Set
-
-sub _Set {
- my $self = shift;
- return ( 0, $self->loc("ACEs can only be created and deleted.") );
-}
-
-# }}}
-
-# {{{ sub _Value
-
-sub _Value {
- my $self = shift;
-
- if ( $self->__Value('DelegatedBy') eq $self->CurrentUser->PrincipalId ) {
- return ( $self->__Value(@_) );
- }
- elsif ( $self->PrincipalObj->IsGroup
- && $self->PrincipalObj->Object->HasMemberRecursively(
- $self->CurrentUser->PrincipalObj
- )
- ) {
- return ( $self->__Value(@_) );
- }
- elsif ( $self->CurrentUser->HasRight(Right => 'ShowACL', Object => $self->Object) ) {
- return ( $self->__Value(@_) );
- }
- else {
- return undef;
- }
-}
-
-# }}}
-
-
-# }}}
-
-# {{{ _CanonicalizePrincipal
-
-=head2 _CanonicalizePrincipal (PrincipalId, PrincipalType)
-
-Takes a principal id and a principal type.
-
-If the principal is a user, resolves it to the proper acl equivalence group.
-Returns a tuple of (RT::Principal, PrincipalType) for the principal we really want to work with
-
-=cut
-
-sub _CanonicalizePrincipal {
- my $self = shift;
- my $princ_id = shift;
- my $princ_type = shift || '';
-
- my $princ_obj = RT::Principal->new($RT::SystemUser);
- $princ_obj->Load($princ_id);
-
- unless ( $princ_obj->Id ) {
- use Carp;
- $RT::Logger->crit(Carp::cluck);
- $RT::Logger->crit("Can't load a principal for id $princ_id");
- return ( $princ_obj, undef );
- }
-
- # Rights never get granted to users. they get granted to their
- # ACL equivalence groups
- if ( $princ_type eq 'User' ) {
- my $equiv_group = RT::Group->new( $self->CurrentUser );
- $equiv_group->LoadACLEquivalenceGroup($princ_obj);
- unless ( $equiv_group->Id ) {
- $RT::Logger->crit( "No ACL equiv group for princ " . $princ_obj->id );
- return ( RT::Principal->new($RT::SystemUser), undef );
- }
- $princ_obj = $equiv_group->PrincipalObj();
- $princ_type = 'Group';
-
- }
- return ( $princ_obj, $princ_type );
-}
-
-sub _ParseObjectArg {
- my $self = shift;
- my %args = ( Object => undef,
- ObjectId => undef,
- ObjectType => undef,
- @_ );
-
- if( $args{'Object'} && ($args{'ObjectId'} || $args{'ObjectType'}) ) {
- $RT::Logger->crit( "Method called with an ObjectType or an ObjectId and Object args" );
- return ();
- } elsif( $args{'Object'} && !UNIVERSAL::can($args{'Object'},'id') ) {
- $RT::Logger->crit( "Method called called Object that has no id method" );
- return ();
- } elsif( $args{'Object'} ) {
- my $obj = $args{'Object'};
- return ($obj, ref $obj, $obj->id);
- } elsif ( $args{'ObjectType'} ) {
- my $obj = $args{'ObjectType'}->new( $self->CurrentUser );
- $obj->Load( $args{'ObjectId'} );
- return ($obj, ref $obj, $obj->id);
- } else {
- $RT::Logger->crit( "Method called with wrong args" );
- return ();
- }
-}
-
-
-# }}}
-1;
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