1 package File
::KDBX
::Object
;
2 # ABSTRACT: A KDBX database object
7 use Devel
::GlobalDestruction
;
8 use File
::KDBX
::Constants
qw(:bool);
10 use File
::KDBX
::Util
qw(:uuid);
11 use Hash
::Util
::FieldHash
qw(fieldhashes);
12 use List
::Util
qw(any first);
13 use Ref
::Util
qw(is_arrayref is_plain_arrayref is_plain_hashref is_ref);
14 use Scalar
::Util
qw(blessed weaken);
17 our $VERSION = '999.999'; # VERSION
19 fieldhashes \
my (%KDBX, %PARENT, %TXNS, %REFS, %SIGNALS);
23 $object = File
::KDBX
::Object-
>new;
24 $object = File
::KDBX
::Object-
>new(%attributes);
25 $object = File
::KDBX
::Object-
>new(\
%data);
26 $object = File
::KDBX
::Object-
>new(\
%data, $kdbx);
28 Construct a new KDBX object
.
30 There
is a subtlety to
take note of
. There
is a significant difference between
:
32 File
::KDBX
::Entry-
>new(username
=> 'iambatman');
36 File
::KDBX
::Entry-
>new({username
=> 'iambatman'}); # WRONG
38 In the first
, an empty object
is first created
and then initialized with whatever I
<attributes
> are
given. In
39 the second
, a hashref
is blessed
and essentially becomes the object
. The significance
is that the hashref
40 key-value pairs will remain as-is so the structure
is expected to adhere to the shape of a raw B
<Object
>
41 (which varies based on the type of object
), whereas with the first the attributes will set the structure
in
42 the correct way
(just like using the object accessors
/ getters / setters
).
44 The second example isn
't I<generally> wrong -- this type of construction is supported for a reason, to allow
45 for working with KDBX objects at a low level -- but it is wrong in this specific case only because
46 C<< {username => $str} >> isn't a valid raw KDBX entry object
. The L
</username
> attribute
is really a proxy
47 for the C
<UserName
> string
, so the equivalent raw entry object should be
48 C
<< {strings
=> {UserName
=> {value
=> $str}}} >>. These are roughly equivalent
:
50 File
::KDBX
::Entry-
>new(username
=> 'iambatman');
51 File
::KDBX
::Entry-
>new({strings
=> {UserName
=> {value
=> 'iambatman'}}});
53 If this explanation went over your head
, that
's fine. Just stick with the attributes since they are typically
54 easier to use correctly and provide the most convenience. If in the future you think of some kind of KDBX
55 object manipulation you want to do that isn't supported by the accessors
and methods
, just know you I
<can
>
56 access an object
's data directly.
64 return $_[0]->clone if @_ == 1 && blessed $_[0] && $_[0]->isa($class);
67 $data = shift if is_plain_hashref($_[0]);
70 $kdbx = shift if @_ % 2 == 1;
73 $args{kdbx} //= $kdbx if defined $kdbx;
75 my $self = bless $data // {}, $class;
77 $self->_set_nonlazy_attributes if !$data;
81 sub _set_nonlazy_attributes { die 'Not implemented
' }
85 $object = $object->init(%attributes);
87 Called by the constructor to set attributes. You normally should not call this.
95 while (my ($key, $val) = each %args) {
96 if (my $method = $self->can($key)) {
106 $object = File::KDBX::Object->wrap($object);
108 Ensure that a KDBX object is blessed.
115 return $object if blessed $object && $object->isa($class);
116 return $class->new(@_, @$object) if is_arrayref($object);
117 return $class->new($object, @_);
122 $label = $object->label;
123 $object->label($label);
125 Get or set the object's label
, a text string that can act as a non-unique identifier
. For an entry
, the label
126 is its title string
. For a group
, the label
is its name
.
130 sub label
{ die 'Not implemented' }
134 $object_copy = $object->clone;
135 $object_copy = File
::KDBX
::Object-
>new($object);
137 Make a clone of an object
. By
default the clone
is indeed an exact copy that
is connected to the same database
138 but
not actually included
in the object tree
(i
.e
. it
has no parent
). Some options are allowed to get
142 * C<new_uuid> - If set, generate a new UUID for the copy (default: false)
143 * C<parent> - If set, add the copy to the same parent group, if any (default: false)
144 * C<relabel> - If set, append " - Copy" to the object's title or name (default: false)
145 * C<entries> - If set, copy child entries, if any (default: true)
146 * C<groups> - If set, copy child groups, if any (default: true)
147 * C<history> - If set, copy entry history, if any (default: true)
148 * C<reference_password> - Toggle whether or not cloned entry's Password string should be set as a field
149 reference to the original entry's Password string (default: false)
150 * C<reference_username> - Toggle whether or not cloned entry's UserName string should be set as a field
151 reference to the original entry's UserName string (default: false)
155 my %CLONE = (entries
=> 1, groups
=> 1, history
=> 1);
160 local $CLONE{new_uuid
} = $args{new_uuid
} // $args{parent
} // 0;
161 local $CLONE{entries
} = $args{entries
} // 1;
162 local $CLONE{groups
} = $args{groups
} // 1;
163 local $CLONE{history
} = $args{history
} // 1;
164 local $CLONE{reference_password
} = $args{reference_password
} // 0;
165 local $CLONE{reference_username
} = $args{reference_username
} // 0;
168 my $copy = Storable
::dclone
($self);
170 if ($args{relabel
} and my $label = $self->label) {
171 $copy->label("$label - Copy");
173 if ($args{parent
} and my $parent = $self->parent) {
174 $parent->add_object($copy);
180 sub STORABLE_freeze
{
185 delete $copy->{entries
} if !$CLONE{entries
};
186 delete $copy->{groups
} if !$CLONE{groups
};
187 delete $copy->{history
} if !$CLONE{history
};
189 return ($cloning ? Hash
::Util
::FieldHash
::id
($self) : ''), $copy;
198 @$self{keys %$copy} = values %$copy;
201 my $kdbx = $KDBX{$addr};
202 $self->kdbx($kdbx) if $kdbx;
205 if (defined $self->{uuid
}) {
206 if (($CLONE{reference_password
} || $CLONE{reference_username
}) && $self->can('strings')) {
207 my $uuid = format_uuid
($self->{uuid
});
209 local $CLONE{new_uuid
} = 0;
210 local $CLONE{entries
} = 1;
211 local $CLONE{groups
} = 1;
212 local $CLONE{history
} = 1;
213 local $CLONE{reference_password
} = 0;
214 local $CLONE{reference_username
} = 0;
215 # Clone only the entry's data and manually bless to avoid infinite recursion.
216 bless Storable
::dclone
({%$copy}), 'File::KDBX::Entry';
218 my $txn = $self->begin_work(snapshot
=> $clone_obj);
219 if ($CLONE{reference_password
}) {
220 $self->password("{REF:P\@I:$uuid}");
222 if ($CLONE{reference_username
}) {
223 $self->username("{REF:U\@I:$uuid}");
227 $self->uuid(generate_uuid
) if $CLONE{new_uuid
};
230 # Dualvars aren't cloned as dualvars, so dualify the icon.
231 $self->icon_id($self->{icon_id
}) if defined $self->{icon_id
};
236 $kdbx = $object->kdbx;
237 $object->kdbx($kdbx);
239 Get
or set the L
<File
::KDBX
> instance connected with this object
.
245 $self = $self->new if !ref $self;
247 if (my $kdbx = shift) {
248 $KDBX{$self} = $kdbx;
255 $KDBX{$self} or throw
'Object is disconnected', object
=> $self;
260 $bool = $object->is_connected;
262 Determine whether
or not an object
is connected to a database
.
268 return !!eval { $self->kdbx };
273 $string_uuid = $object->id;
274 $string_uuid = $object->id($delimiter);
276 Get the unique identifier
for this object as a B
<formatted
> UUID string
, typically
for display purposes
. You
277 could
use this to compare with other identifiers formatted with the same delimiter
, but it
is more efficient
278 to
use the raw UUID
for that purpose
(see L
</uuid
>).
280 A delimiter can optionally be provided to
break up the UUID string visually
. See
281 L
<File
::KDBX
::Util
/format_uuid
>.
285 sub id
{ format_uuid
(shift-
>uuid, @_) }
291 $group = $object->group;
293 $group = $object->parent;
295 $object->group($new_parent);
297 Get
or set the parent group to which an object belongs
or C
<undef> if it belongs to
no group
.
304 if (my $new_group = shift) {
305 my $old_group = $self->group;
306 return $new_group if Hash
::Util
::FieldHash
::id
($old_group) == Hash
::Util
::FieldHash
::id
($new_group);
307 # move to a new parent
308 $self->remove(signal
=> 0) if $old_group;
309 $new_group->add_object($self);
312 my $id = Hash
::Util
::FieldHash
::id
($self);
313 if (my $group = $PARENT{$self}) {
314 my $method = $self->_parent_container;
315 return $group if first
{ $id == Hash
::Util
::FieldHash
::id
($_) } @{$group->$method};
316 delete $PARENT{$self};
318 # always get lineage from root to leaf because the other way requires parent, so it would be recursive
319 my $lineage = $self->kdbx->_trace_lineage($self) or return;
320 my $group = pop @$lineage or return;
321 $PARENT{$self} = $group; weaken
$PARENT{$self};
325 sub parent
{ shift-
>group(@_) }
329 if (my $parent = shift) {
330 $PARENT{$self} = $parent;
331 weaken
$PARENT{$self};
334 delete $PARENT{$self};
339 ### Name of the parent attribute expected to contain the object
340 sub _parent_container
{ die 'Not implemented' }
344 \
@lineage = $object->lineage;
345 \
@lineage = $object->lineage($base_group);
347 Get the direct line of ancestors from C
<$base_group> (default: the root group
) to an object
. The lineage
348 includes the base group but I
<not> the target object
. Returns C
<undef> if the target
is not in the database
349 structure
. Returns an empty arrayref
is the object itself
is a root group
.
357 my $base_addr = $base ? Hash
::Util
::FieldHash
::id
($base) : 0;
362 while ($o = $o->parent) {
364 last if $base_addr == Hash
::Util
::FieldHash
::id
($o);
366 return \
@path if @path && ($base_addr == Hash
::Util
::FieldHash
::id
($path[0]) || $path[0]->is_root);
369 return $self->kdbx->_trace_lineage($self, $base);
374 $object = $object->remove(%options);
376 Remove an object from its parent
. If the object
is a group
, all contained objects stay with the object
and so
377 are removed as well
. Options
:
380 * C<signal> Whether or not to signal the removal to the connected database (default: true)
386 my $parent = $self->parent;
387 $parent->remove_object($self, @_) if $parent;
388 $self->_set_group(undef);
394 $object = $object->recycle;
396 Remove an object from its parent
and add it to the connected database
's recycle bin group.
402 return $self->parent($self->kdbx->recycle_bin);
405 =method recycle_or_remove
407 $object = $object->recycle_or_remove;
409 Recycle or remove an object, depending on the connected database's L
<File
::KDBX
/recycle_bin_enabled
>. If the
410 object
is not connected to a database
or is already
in the recycle bin
, remove it
.
414 sub recycle_or_remove
{
416 my $kdbx = eval { $self->kdbx };
417 if ($kdbx && $kdbx->recycle_bin_enabled && !$self->is_recycled) {
427 $bool = $object->is_recycled;
429 Get whether
or not an object
is in a recycle bin
.
435 eval { $self->kdbx } or return FALSE
;
436 return !!($self->parent && any
{ $_->is_recycle_bin } @{$self->lineage});
439 ##############################################################################
443 @tags = $entry->tag_list;
445 Get a list of tags
, split from L
</tag
> using delimiters C
<,>, C
<.>, C
<:>, C
<;> and whitespace
.
451 return grep { $_ ne '' } split(/[,\.:;]|\s+/, trim
($self->tags) // '');
456 $image_data = $object->custom_icon;
457 $image_data = $object->custom_icon($image_data, %attributes);
459 Get
or set an icon image
. Returns C
<undef> if there
is no custom icon set
. Setting a custom icon will change
460 the L
</custom_icon_uuid
> attribute
.
462 Custom icon attributes
(supported
in KDBX4
.1
and greater
):
465 * C<name> - Name of the icon (text)
466 * C<last_modification_time> - Just what it says (datetime)
472 my $kdbx = $self->kdbx;
475 my $uuid = defined $img ? $kdbx->add_custom_icon($img, @_) : undef;
476 $self->icon_id(0) if $uuid;
477 $self->custom_icon_uuid($uuid);
480 return $kdbx->custom_icon_data($self->custom_icon_uuid);
485 \
%all_data = $object->custom_data;
486 $object->custom_data(\
%all_data);
488 \
%data = $object->custom_data($key);
489 $object->custom_data($key => \
%data);
490 $object->custom_data(%data);
491 $object->custom_data(key
=> $value, %data);
493 Get
and set custom data
. Custom data
is metadata associated with an object
.
495 Each data item can have a few attributes associated with it
.
498 * C<key> - A unique text string identifier used to look up the data item (required)
499 * C<value> - A text string value (required)
500 * C<last_modification_time> (optional, KDBX4.1+)
506 $self->{custom_data
} = shift if @_ == 1 && is_plain_hashref
($_[0]);
507 return $self->{custom_data
} //= {} if !@_;
509 my %args = @_ == 2 ? (key
=> shift, value
=> shift)
510 : @_ % 2 == 1 ? (key
=> shift, @_) : @_;
512 if (!$args{key
} && !$args{value
}) {
513 my %standard = (key
=> 1, value
=> 1, last_modification_time
=> 1);
514 my @other_keys = grep { !$standard{$_} } keys %args;
515 if (@other_keys == 1) {
516 my $key = $args{key
} = $other_keys[0];
517 $args{value
} = delete $args{$key};
521 my $key = $args{key
} or throw
'Must provide a custom_data key to access';
523 return $self->{custom_data
}{$key} = $args{value
} if is_plain_hashref
($args{value
});
525 while (my ($field, $value) = each %args) {
526 $self->{custom_data
}{$key}{$field} = $value;
528 return $self->{custom_data
}{$key};
531 =method custom_data_value
533 $value = $object->custom_data_value($key);
535 Exactly the same as L
</custom_data
> except returns just the custom data
's value rather than a structure of
536 attributes. This is a shortcut for:
538 my $data = $object->custom_data($key);
539 my $value = defined $data ? $data->{value} : undef;
543 sub custom_data_value {
545 my $data = $self->custom_data(@_) // return undef;
546 return $data->{value};
549 ##############################################################################
553 $txn = $object->begin_work(%options);
554 $object->begin_work(%options);
556 Begin a new transaction. Returns a L<File::KDBX::Transaction> object that can be scoped to ensure a rollback
557 occurs if exceptions are thrown. Alternatively, if called in void context, there will be no
558 B<File::KDBX::Transaction> and it is instead your responsibility to call L</commit> or L</rollback> as
559 appropriate. It is undefined behavior to call these if a B<File::KDBX::Transaction> exists. Recursive
560 transactions are allowed.
562 Signals created during a transaction are delayed until all transactions are resolved. If the outermost
563 transaction is committed, then the signals are de-duplicated and delivered. Otherwise the signals are dropped.
564 This means that the KDBX database will not fix broken references or mark itself dirty until after the
565 transaction is committed.
567 How it works: With the beginning of a transaction, a snapshot of the object is created. In the event of
568 a rollback, the object's data
is replaced with data from the snapshot
.
570 By
default, the snapshot
is shallow
(i
.e
. does not include subroups
, entries
or historical entries
). This
571 means that only modifications to the object itself
(its data
, fields
, strings
, etc
.) are atomic
; modifications
572 to subroups etc
., including adding
or removing items
, are auto-committed instantly
and will persist regardless
573 of the result of the pending transaction
. You can override this
for groups
, entries
and history independently
577 * C<entries> - If set, snapshot entries within a group, deeply (default: false)
578 * C<groups> - If set, snapshot subroups within a group, deeply (default: false)
579 * C<history> - If set, snapshot historical entries within an entry (default: false)
581 For example, if you begin a transaction on a group object using the C<entries> option, like this:
583 $group->begin_work(entries => 1);
585 Then if you modify any of the group's entries OR add new entries OR delete entries, all of that will be undone
586 if the transaction is rolled back. With a default-configured transaction, however, changes to entries are kept
587 even if the transaction is rolled back.
594 if (defined wantarray) {
595 require File
::KDBX
::Transaction
;
596 return File
::KDBX
::Transaction-
>new($self, @_);
600 my $orig = $args{snapshot
} // do {
601 my $c = $self->clone(
602 entries
=> $args{entries
} // 0,
603 groups
=> $args{groups
} // 0,
604 history
=> $args{history
} // 0,
606 $c->{entries
} = $self->{entries
} if !$args{entries
};
607 $c->{groups
} = $self->{groups
} if !$args{groups
};
608 $c->{history
} = $self->{history
} if !$args{history
};
612 my $id = Hash
::Util
::FieldHash
::id
($orig);
613 _save_references
($id, $self, $orig);
615 $self->_signal_begin_work;
617 push @{$self->_txns}, $orig;
624 Commit a transaction
, making updates to C
<$object> permanent
. Returns itself to allow
method chaining
.
630 my $orig = pop @{$self->_txns} or return $self;
631 $self->_commit($orig);
632 my $signals = $self->_signal_commit;
633 $self->_signal_send($signals) if !$self->_in_txn;
641 Roll back the most recent transaction
, throwing away any updates to the L
</object
> made since the transaction
642 began
. Returns itself to allow
method chaining
.
649 my $orig = pop @{$self->_txns} or return $self;
651 my $id = Hash
::Util
::FieldHash
::id
($orig);
652 _restore_references
($id, $orig);
654 $self->_signal_rollback;
659 # Get whether or not there is at least one pending transaction.
660 sub _in_txn
{ scalar @{$_[0]->_txns} }
662 # Get an array ref of pending transactions.
663 sub _txns
{ $TXNS{$_[0]} //= [] }
665 # The _commit hook notifies subclasses that a commit has occurred.
666 sub _commit
{ die 'Not implemented' }
668 # Get a reference to an object that represents an object's committed state. If there is no pending
669 # transaction, this is just $self. If there is a transaction, this is the snapshot take before the transaction
670 # began. This method is private because it provides direct access to the actual snapshot. It is important that
671 # the snapshot not be changed or a rollback would roll back to an altered state.
672 # This is used by File::KDBX::Dumper::XML so as to not dump uncommitted changes.
675 my ($orig) = @{$self->_txns};
676 return $orig // $self;
679 # In addition to cloning an object when beginning work, we also keep track its hashrefs and arrayrefs
680 # internally so that we can restore to the very same structures in the case of a rollback.
681 sub _save_references
{
686 if (is_plain_arrayref
($orig)) {
687 for (my $i = 0; $i < @$orig; ++$i) {
688 _save_references
($id, $self->[$i], $orig->[$i]);
690 $REFS{$id}{Hash
::Util
::FieldHash
::id
($orig)} = $self;
692 elsif (is_plain_hashref
($orig) || (blessed
$orig && $orig->isa(__PACKAGE__
))) {
693 for my $key (keys %$orig) {
694 _save_references
($id, $self->{$key}, $orig->{$key});
696 $REFS{$id}{Hash
::Util
::FieldHash
::id
($orig)} = $self;
700 # During a rollback, copy data from the snapshot back into the original internal structures.
701 sub _restore_references
{
703 my $orig = shift // return;
704 my $self = delete $REFS{$id}{Hash
::Util
::FieldHash
::id
($orig) // ''} // return $orig;
706 if (is_plain_arrayref
($orig)) {
707 @$self = map { _restore_references
($id, $_) } @$orig;
709 elsif (is_plain_hashref
($orig) || (blessed
$orig && $orig->isa(__PACKAGE__
))) {
710 for my $key (keys %$orig) {
711 # next if is_ref($orig->{$key}) &&
712 # (Hash::Util::FieldHash::id($self->{$key}) // 0) == Hash::Util::FieldHash::id($orig->{$key});
713 $self->{$key} = _restore_references
($id, $orig->{$key});
720 ##############################################################################
726 if ($self->_in_txn) {
727 my $stack = $self->_signal_stack;
728 my $queue = $stack->[-1];
729 push @$queue, [$type, @_];
732 $self->_signal_send([[$type, @_]]);
737 sub _signal_stack
{ $SIGNALS{$_[0]} //= [] }
739 sub _signal_begin_work
{
741 push @{$self->_signal_stack}, [];
746 my $signals = pop @{$self->_signal_stack};
747 my $previous = $self->_signal_stack->[-1] // [];
748 push @$previous, @$signals;
752 sub _signal_rollback
{
754 pop @{$self->_signal_stack};
759 my $signals = shift // [];
761 my $kdbx = $KDBX{$self} or return;
763 # de-duplicate, keeping the most recent signal for each type
765 my @signals = grep { !$seen{$_->[0]}++ } reverse @$signals;
767 for my $sig (reverse @signals) {
768 $kdbx->_handle_signal($self, @$sig);
772 ##############################################################################
777 require File
::KDBX
::Group
;
778 return File
::KDBX
::Group-
>wrap($group, $KDBX{$self});
784 require File
::KDBX
::Entry
;
785 return File
::KDBX
::Entry-
>wrap($entry, $KDBX{$self});
788 sub TO_JSON
{ +{%{$_[0]}} }
793 =for Pod::Coverage STORABLE_freeze STORABLE_thaw TO_JSON
797 KDBX is an object database. This abstract class represents an object. You should not use this class directly
798 but instead use its subclasses:
801 * L<File::KDBX::Entry>
802 * L<File::KDBX::Group>
804 There is some functionality shared by both types of objects, and that's what this class provides.
806 Each object can be connected with a L<File::KDBX> database or be disconnected. A disconnected object exists in
807 memory but will not be persisted when dumping a database. It is also possible for an object to be connected
808 with a database but not be part of the object tree (i.e. is not the root group or any subroup or entry).
809 A disconnected object or an object not part of the object tree of a database can be added to a database using
813 * L<File::KDBX/add_entry>
814 * L<File::KDBX/add_group>
815 * L<File::KDBX::Group/add_entry>
816 * L<File::KDBX::Group/add_group>
817 * L<File::KDBX::Entry/add_historical_entry>
819 It is possible to copy or move objects between databases, but B<DO NOT> include the same object in more
820 than one database at once or there could some strange aliasing effects (i.e. changes in one database might
821 effect another in unexpected ways). This could lead to difficult-to-debug problems. It is similarly not safe
822 or valid to add the same object multiple times to the same database. For example:
824 my $entry = File::KDBX::Entry->(title => 'Whatever');
827 $kdbx->add_entry($entry);
828 $another_kdbx->add_entry($entry);
831 $kdbx->add_entry($entry);
832 $kdbx->add_entry($entry); # again
836 # Copy an entry to multiple databases:
837 $kdbx->add_entry($entry);
838 $another_kdbx->add_entry($entry->clone);
840 # OR move an existing entry from one database to another:
841 $kdbx->add_entry($entry->remove);