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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-# (Except where explicitly superseded by other copyright notices)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 NAME
-
-RT::SharedSetting - an API for settings that belong to an RT::User or RT::Group
-
-=head1 SYNOPSIS
-
- use RT::SharedSetting;
-
-=head1 DESCRIPTION
-
-A RT::SharedSetting is an object that can belong to an L<RT::User> or an <RT::Group>.
-It consists of an ID, a name, and some arbitrary data.
-
-=cut
-
-package RT::SharedSetting;
-use strict;
-use warnings;
-use RT::Attribute;
-use base qw/RT::Base/;
-
-=head1 METHODS
-
-=head2 new
-
-Returns a new L<RT::SharedSetting> object.
-Takes the current user, see also L<RT::Base>.
-
-=cut
-
-sub new {
- my $proto = shift;
- my $class = ref($proto) || $proto;
- my $self = {};
- $self->{'Id'} = 0;
- bless ($self, $class);
- $self->CurrentUser(@_);
- return $self;
-}
-
-=head2 Load
-
-Takes a privacy specification and a shared-setting ID. Loads the given object
-ID if it belongs to the stated user or group. Calls the L</PostLoad> method on
-success for any further initialization. Returns a tuple of status and message,
-where status is true on success.
-
-=cut
-
-sub Load {
- my $self = shift;
- my ($privacy, $id) = @_;
- my $object = $self->_GetObject($privacy);
-
- if ($object) {
- $self->{'Attribute'} = $object->Attributes->WithId($id);
- if ($self->{'Attribute'}->Id) {
- $self->{'Id'} = $self->{'Attribute'}->Id;
- $self->{'Privacy'} = $privacy;
- $self->PostLoad();
-
- return (0, $self->loc("Permission denied"))
- unless $self->CurrentUserCanSee;
-
- return (1, $self->loc("Loaded [_1] [_2]", $self->ObjectName, $self->Name));
- } else {
- $RT::Logger->error("Could not load attribute " . $id
- . " for object " . $privacy);
- return (0, $self->loc("Failed to load [_1] [_2]", $self->ObjectName, $id))
- }
- } else {
- $RT::Logger->warning("Could not load object $privacy when loading " . $self->ObjectName);
- return (0, $self->loc("Could not load object for [_1]", $privacy));
- }
-}
-
-=head2 LoadById
-
-First loads up the L<RT::Attribute> for this shared setting by ID, then calls
-L</Load> with the correct parameters. Returns a tuple of status and message,
-where status is true on success.
-
-=cut
-
-sub LoadById {
- my $self = shift;
- my $id = shift;
-
- my $attr = RT::Attribute->new($self->CurrentUser);
- my ($ok, $msg) = $attr->LoadById($id);
-
- if (!$ok) {
- return (0, $self->loc("Failed to load [_1] [_2]: [_3]", $self->ObjectName, $id, $msg))
- }
-
- my $privacy = $self->_build_privacy($attr->ObjectType, $attr->ObjectId);
- return (0, $self->loc("Bad privacy for attribute [_1]", $id))
- if !$privacy;
-
- return $self->Load($privacy, $id);
-}
-
-=head2 PostLoad
-
-Called after after successful L</Load>.
-
-=cut
-
-sub PostLoad { }
-
-=head2 Save
-
-Creates a new shared setting. Takes a privacy, a name, and any other arguments.
-Saves the given parameters to the appropriate user/group object, and loads the
-resulting object. Arguments are passed to the L</SaveAttribute> method, which
-does the actual update. Returns a tuple of status and message, where status is
-true on success. Defaults are:
-
- Privacy: CurrentUser only
- Name: "new (ObjectName)"
-
-=cut
-
-sub Save {
- my $self = shift;
- my %args = (
- 'Privacy' => 'RT::User-' . $self->CurrentUser->Id,
- 'Name' => "new " . $self->ObjectName,
- @_,
- );
-
- my $privacy = $args{'Privacy'};
- my $name = $args{'Name'},
- my $object = $self->_GetObject($privacy);
-
- return (0, $self->loc("Failed to load object for [_1]", $privacy))
- unless $object;
-
- return (0, $self->loc("Permission denied"))
- unless $self->CurrentUserCanCreate($privacy);
-
- my ($att_id, $att_msg) = $self->SaveAttribute($object, \%args);
-
- if ($att_id) {
- $self->{'Attribute'} = $object->Attributes->WithId($att_id);
- $self->{'Id'} = $att_id;
- $self->{'Privacy'} = $privacy;
- return ( 1, $self->loc( "Saved [_1] [_2]", $self->ObjectName, $name ) );
- }
- else {
- $RT::Logger->error($self->ObjectName . " save failure: $att_msg");
- return ( 0, $self->loc("Failed to create [_1] attribute", $self->ObjectName) );
- }
-}
-
-=head2 SaveAttribute
-
-An empty method for subclassing. Called from L</Save> method.
-
-=cut
-
-sub SaveAttribute { }
-
-=head2 Update
-
-Updates the parameters of an existing shared setting. Any arguments are passed
-to the L</UpdateAttribute> method. Returns a tuple of status and message, where
-status is true on success.
-
-=cut
-
-sub Update {
- my $self = shift;
- my %args = @_;
-
- return(0, $self->loc("No [_1] loaded", $self->ObjectName)) unless $self->Id;
- return(0, $self->loc("Could not load [_1] attribute", $self->ObjectName))
- unless $self->{'Attribute'}->Id;
-
- return (0, $self->loc("Permission denied"))
- unless $self->CurrentUserCanModify;
-
- my ($status, $msg) = $self->UpdateAttribute(\%args);
-
- return (1, $self->loc("[_1] update: Nothing changed", ucfirst($self->ObjectName)))
- if !defined $msg;
-
- # prevent useless warnings
- return (1, $self->loc("[_1] updated"), ucfirst($self->ObjectName))
- if $msg =~ /That is already the current value/;
-
- return ($status, $self->loc("[_1] update: [_2]", ucfirst($self->ObjectName), $msg));
-}
-
-=head2 UpdateAttribute
-
-An empty method for subclassing. Called from L</Update> method.
-
-=cut
-
-sub UpdateAttribute { }
-
-=head2 Delete
-
-Deletes the existing shared setting. Returns a tuple of status and message,
-where status is true upon success.
-
-=cut
-
-sub Delete {
- my $self = shift;
-
- return (0, $self->loc("Permission denied"))
- unless $self->CurrentUserCanDelete;
-
- my ($status, $msg) = $self->{'Attribute'}->Delete;
- if ($status) {
- return (1, $self->loc("Deleted [_1]", $self->ObjectName));
- } else {
- return (0, $self->loc("Delete failed: [_1]", $msg));
- }
-}
-
-### Accessor methods
-
-=head2 Name
-
-Returns the name of this shared setting.
-
-=cut
-
-sub Name {
- my $self = shift;
- return unless ref($self->{'Attribute'}) eq 'RT::Attribute';
- return $self->{'Attribute'}->Description();
-}
-
-=head2 Id
-
-Returns the numerical ID of this shared setting.
-
-=cut
-
-sub Id {
- my $self = shift;
- return $self->{'Id'};
-}
-
-=head2 Privacy
-
-Returns the principal object to whom this shared setting belongs, in a string
-"<class>-<id>", e.g. "RT::Group-16".
-
-=cut
-
-sub Privacy {
- my $self = shift;
- return $self->{'Privacy'};
-}
-
-=head2 GetParameter
-
-Returns the given named parameter of the setting.
-
-=cut
-
-sub GetParameter {
- my $self = shift;
- my $param = shift;
- return unless ref($self->{'Attribute'}) eq 'RT::Attribute';
- return $self->{'Attribute'}->SubValue($param);
-}
-
-=head2 IsVisibleTo Privacy
-
-Returns true if the setting is visible to all principals of the given privacy.
-This does not deal with ACLs, this only looks at membership.
-
-=cut
-
-sub IsVisibleTo {
- my $self = shift;
- my $to = shift;
- my $privacy = $self->Privacy;
-
- # if the privacies are the same, then they can be seen. this handles
- # a personal setting being visible to that user.
- return 1 if $privacy eq $to;
-
- # If the setting is systemwide, then any user can see it.
- return 1 if $privacy =~ /^RT::System/;
-
- # Only privacies that are RT::System can be seen by everyone.
- return 0 if $to =~ /^RT::System/;
-
- # If the setting is group-wide...
- if ($privacy =~ /^RT::Group-(\d+)$/) {
- my $setting_group = RT::Group->new($self->CurrentUser);
- $setting_group->Load($1);
-
- if ($to =~ /-(\d+)$/) {
- my $to_id = $1;
-
- # then any principal that is a member of the setting's group can see
- # the setting
- return $setting_group->HasMemberRecursively($to_id);
- }
- }
-
- return 0;
-}
-
-sub CurrentUserCanSee { 1 }
-sub CurrentUserCanCreate { 1 }
-sub CurrentUserCanModify { 1 }
-sub CurrentUserCanDelete { 1 }
-
-### Internal methods
-
-# _GetObject: helper routine to load the correct object whose parameters
-# have been passed.
-
-sub _GetObject {
- my $self = shift;
- my $privacy = shift;
-
- my ($obj_type, $obj_id) = split(/\-/, ($privacy || ''));
-
- unless ($obj_type && $obj_id) {
- $privacy = '(undef)' if !defined($privacy);
- $RT::Logger->debug("Invalid privacy string '$privacy'");
- return undef;
- }
-
- my $object = $self->_load_privacy_object($obj_type, $obj_id);
-
- unless (ref($object) eq $obj_type) {
- $RT::Logger->error("Could not load object of type $obj_type with ID $obj_id, got object of type " . (ref($object) || 'undef'));
- return undef;
- }
-
- # Do not allow the loading of a user object other than the current
- # user, or of a group object of which the current user is not a member.
-
- if ($obj_type eq 'RT::User' && $object->Id != $self->CurrentUser->UserObj->Id) {
- $RT::Logger->debug("Permission denied for user other than self");
- return undef;
- }
-
- if ($obj_type eq 'RT::Group' && !$object->HasMemberRecursively($self->CurrentUser->PrincipalObj)) {
- $RT::Logger->debug("Permission denied, ".$self->CurrentUser->Name.
- " is not a member of group");
- return undef;
- }
-
- return $object;
-}
-
-sub _load_privacy_object {
- my ($self, $obj_type, $obj_id) = @_;
- if ( $obj_type eq 'RT::User' ) {
- if ( $obj_id == $self->CurrentUser->Id ) {
- return $self->CurrentUser->UserObj;
- } else {
- $RT::Logger->warning("User #". $self->CurrentUser->Id ." tried to load container user #". $obj_id);
- return undef;
- }
- }
- elsif ($obj_type eq 'RT::Group') {
- my $group = RT::Group->new($self->CurrentUser);
- $group->Load($obj_id);
- return $group;
- }
- elsif ($obj_type eq 'RT::System') {
- return RT::System->new($self->CurrentUser);
- }
-
- $RT::Logger->error(
- "Tried to load a ". $self->ObjectName
- ." belonging to an $obj_type, which is neither a user nor a group"
- );
-
- return undef;
-}
-
-sub _build_privacy {
- my ($self, $obj_type, $obj_id) = @_;
-
- # allow passing in just an object to find its privacy string
- if (ref($obj_type)) {
- my $Object = $obj_type;
- return $Object->isa('RT::User') ? 'RT::User-' . $Object->Id
- : $Object->isa('RT::Group') ? 'RT::Group-' . $Object->Id
- : $Object->isa('RT::System') ? 'RT::System-' . $Object->Id
- : undef;
- }
-
- return undef unless ($obj_type); # undef workaround
- return $obj_type eq 'RT::User' ? "$obj_type-$obj_id"
- : $obj_type eq 'RT::Group' ? "$obj_type-$obj_id"
- : $obj_type eq 'RT::System' ? "$obj_type-$obj_id"
- : undef;
-}
-
-eval "require RT::SharedSetting_Vendor";
-die $@ if ($@ && $@ !~ qr{^Can't locate RT/SharedSetting_Vendor.pm});
-eval "require RT::SharedSetting_Local";
-die $@ if ($@ && $@ !~ qr{^Can't locate RT/SharedSetting_Local.pm});
-
-1;
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