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bookmark.php
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<?php
/**
* Link/Bookmark API
*
* @package WordPress
* @subpackage Bookmark
*/
/**
* Retrieve Bookmark data
*
* @since 2.1.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|stdClass $bookmark
* @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
* correspond to an stdClass object, an associative array, or a numeric array,
* respectively. Default OBJECT.
* @param string $filter Optional. How to sanitize bookmark fields. Default 'raw'.
* @return array|object|null Type returned depends on $output value.
*/
function
get_bookmark
(
$
bookmark
,
$
output
=
OBJECT
,
$
filter
=
'
raw
'
) {
global
$
wpdb
;
if
(
empty
(
$
bookmark
) ) {
if
(
isset
(
$
GLOBALS
[
'
link
'
] ) ) {
$
_bookmark
= &
$
GLOBALS
[
'
link
'
];
}
else
{
$
_bookmark
=
null
;
}
}
elseif
(
is_object
(
$
bookmark
) ) {
wp_cache_add
(
$
bookmark
->
link_id
,
$
bookmark
,
'
bookmark
'
);
$
_bookmark
=
$
bookmark
;
}
else
{
if
(
isset
(
$
GLOBALS
[
'
link
'
] ) && (
$
GLOBALS
[
'
link
'
]->
link_id
==
$
bookmark
) ) {
$
_bookmark
= &
$
GLOBALS
[
'
link
'
];
}
else
{
$
_bookmark
=
wp_cache_get
(
$
bookmark
,
'
bookmark
'
);
if
( !
$
_bookmark
) {
$
_bookmark
=
$
wpdb
->
get_row
(
$
wpdb
->
prepare
(
"
SELECT * FROM
$
wpdb
->
links
WHERE link_id = %d LIMIT 1
"
,
$
bookmark
) );
if
(
$
_bookmark
) {
$
_bookmark
->
link_category
=
array_unique
(
wp_get_object_terms
(
$
_bookmark
->
link_id
,
'
link_category
'
,
array
(
'
fields
'
=>
'
ids
'
) ) );
wp_cache_add
(
$
_bookmark
->
link_id
,
$
_bookmark
,
'
bookmark
'
);
}
}
}
}
if
( !
$
_bookmark
) {
return
$
_bookmark
;
}
$
_bookmark
=
sanitize_bookmark
(
$
_bookmark
,
$
filter
);
if
(
OBJECT
===
$
output
) {
return
$
_bookmark
;
}
elseif
(
ARRAY_A
===
$
output
) {
return
get_object_vars
(
$
_bookmark
);
}
elseif
(
ARRAY_N
===
$
output
) {
return
array_values
(
get_object_vars
(
$
_bookmark
) );
}
else
{
return
$
_bookmark
;
}
}
/**
* Retrieve single bookmark data item or field.
*
* @since 2.3.0
*
* @param string $field The name of the data field to return.
* @param int $bookmark The bookmark ID to get field.
* @param string $context Optional. The context of how the field will be used.
* @return string|WP_Error
*/
function
get_bookmark_field
(
$
field
,
$
bookmark
,
$
context
=
'
display
'
) {
$
bookmark
= (
int
)
$
bookmark
;
$
bookmark
=
get_bookmark
(
$
bookmark
);
if
(
is_wp_error
(
$
bookmark
) ) {
return
$
bookmark
;
}
if
( !
is_object
(
$
bookmark
) ) {
return
''
;
}
if
( !
isset
(
$
bookmark
->
$
field
) ) {
return
''
;
}
return
sanitize_bookmark_field
(
$
field
,
$
bookmark
->
$
field
,
$
bookmark
->
link_id
,
$
context
);
}
/**
* Retrieves the list of bookmarks
*
* Attempts to retrieve from the cache first based on MD5 hash of arguments. If
* that fails, then the query will be built from the arguments and executed. The
* results will be stored to the cache.
*
* @since 2.1.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string|array $args {
* Optional. String or array of arguments to retrieve bookmarks.
*
* @type string $orderby How to order the links by. Accepts 'id', 'link_id', 'name', 'link_name',
* 'url', 'link_url', 'visible', 'link_visible', 'rating', 'link_rating',
* 'owner', 'link_owner', 'updated', 'link_updated', 'notes', 'link_notes',
* 'description', 'link_description', 'length' and 'rand'.
* When `$orderby` is 'length', orders by the character length of
* 'link_name'. Default 'name'.
* @type string $order Whether to order bookmarks in ascending or descending order.
* Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'.
* @type int $limit Amount of bookmarks to display. Accepts any positive number or
* -1 for all. Default -1.
* @type string $category Comma-separated list of category IDs to include links from.
* Default empty.
* @type string $category_name Category to retrieve links for by name. Default empty.
* @type int|bool $hide_invisible Whether to show or hide links marked as 'invisible'. Accepts
* 1|true or 0|false. Default 1|true.
* @type int|bool $show_updated Whether to display the time the bookmark was last updated.
* Accepts 1|true or 0|false. Default 0|false.
* @type string $include Comma-separated list of bookmark IDs to include. Default empty.
* @type string $exclude Comma-separated list of bookmark IDs to exclude. Default empty.
* @type string $search Search terms. Will be SQL-formatted with wildcards before and after
* and searched in 'link_url', 'link_name' and 'link_description'.
* Default empty.
* }
* @return object[] List of bookmark row objects.
*/
function
get_bookmarks
(
$
args
=
''
) {
global
$
wpdb
;
$
defaults
=
array
(
'
orderby
'
=>
'
name
'
,
'
order
'
=>
'
ASC
'
,
'
limit
'
=> -
1
,
'
category
'
=>
''
,
'
category_name
'
=>
''
,
'
hide_invisible
'
=>
1
,
'
show_updated
'
=>
0
,
'
include
'
=>
''
,
'
exclude
'
=>
''
,
'
search
'
=>
''
,
);
$
parsed_args
=
wp_parse_args
(
$
args
,
$
defaults
);
$
key
=
md5
(
serialize
(
$
parsed_args
) );
$
cache
=
wp_cache_get
(
'
get_bookmarks
'
,
'
bookmark
'
);
if
(
'
rand
'
!==
$
parsed_args
[
'
orderby
'
] &&
$
cache
) {
if
(
is_array
(
$
cache
) &&
isset
(
$
cache
[
$
key
] ) ) {
$
bookmarks
=
$
cache
[
$
key
];
/**
* Filters the returned list of bookmarks.
*
* The first time the hook is evaluated in this file, it returns the cached
* bookmarks list. The second evaluation returns a cached bookmarks list if the
* link category is passed but does not exist. The third evaluation returns
* the full cached results.
*
* @since 2.1.0
*
* @see get_bookmarks()
*
* @param array $bookmarks List of the cached bookmarks.
* @param array $parsed_args An array of bookmark query arguments.
*/
return
apply_filters
(
'
get_bookmarks
'
,
$
bookmarks
,
$
parsed_args
);
}
}
if
( !
is_array
(
$
cache
) ) {
$
cache
=
array
();
}
$
inclusions
=
''
;
if
( !
empty
(
$
parsed_args
[
'
include
'
] ) ) {
$
parsed_args
[
'
exclude
'
] =
''
;
// Ignore exclude, category, and category_name params if using include.
$
parsed_args
[
'
category
'
] =
''
;
$
parsed_args
[
'
category_name
'
] =
''
;
$
inclinks
=
wp_parse_id_list
(
$
parsed_args
[
'
include
'
] );
if
(
count
(
$
inclinks
) ) {
foreach
(
$
inclinks
as
$
inclink
) {
if
(
empty
(
$
inclusions
) ) {
$
inclusions
=
'
AND ( link_id =
'
.
$
inclink
.
'
'
;
}
else
{
$
inclusions
.=
'
OR link_id =
'
.
$
inclink
.
'
'
;
}
}
}
}
if
( !
empty
(
$
inclusions
) ) {
$
inclusions
.=
'
)
'
;
}
$
exclusions
=
''
;
if
( !
empty
(
$
parsed_args
[
'
exclude
'
] ) ) {
$
exlinks
=
wp_parse_id_list
(
$
parsed_args
[
'
exclude
'
] );
if
(
count
(
$
exlinks
) ) {
foreach
(
$
exlinks
as
$
exlink
) {
if
(
empty
(
$
exclusions
) ) {
$
exclusions
=
'
AND ( link_id <>
'
.
$
exlink
.
'
'
;
}
else
{
$
exclusions
.=
'
AND link_id <>
'
.
$
exlink
.
'
'
;
}
}
}
}
if
( !
empty
(
$
exclusions
) ) {
$
exclusions
.=
'
)
'
;
}
if
( !
empty
(
$
parsed_args
[
'
category_name
'
] ) ) {
$
parsed_args
[
'
category
'
] =
get_term_by
(
'
name
'
,
$
parsed_args
[
'
category_name
'
],
'
link_category
'
);
if
(
$
parsed_args
[
'
category
'
] ) {
$
parsed_args
[
'
category
'
] =
$
parsed_args
[
'
category
'
]->
term_id
;
}
else
{
$
cache
[
$
key
] =
array
();
wp_cache_set
(
'
get_bookmarks
'
,
$
cache
,
'
bookmark
'
);
/** This filter is documented in wp-includes/bookmark.php */
return
apply_filters
(
'
get_bookmarks
'
,
array
(),
$
parsed_args
);
}
}
$
search
=
''
;
if
( !
empty
(
$
parsed_args
[
'
search
'
] ) ) {
$
like
=
'
%
'
.
$
wpdb
->
esc_like
(
$
parsed_args
[
'
search
'
] ) .
'
%
'
;
$
search
=
$
wpdb
->
prepare
(
'
AND ( (link_url LIKE %s) OR (link_name LIKE %s) OR (link_description LIKE %s) )
'
,
$
like
,
$
like
,
$
like
);
}
$
category_query
=
''
;
$
join
=
''
;
if
( !
empty
(
$
parsed_args
[
'
category
'
] ) ) {
$
incategories
=
wp_parse_id_list
(
$
parsed_args
[
'
category
'
] );
if
(
count
(
$
incategories
) ) {
foreach
(
$
incategories
as
$
incat
) {
if
(
empty
(
$
category_query
) ) {
$
category_query
=
'
AND ( tt.term_id =
'
.
$
incat
.
'
'
;
}
else
{
$
category_query
.=
'
OR tt.term_id =
'
.
$
incat
.
'
'
;
}
}
}
}
if
( !
empty
(
$
category_query
) ) {
$
category_query
.=
"
) AND taxonomy = 'link_category'
"
;
$
join
=
"
INNER JOIN
$
wpdb
->
term_relationships
AS tr ON (
$
wpdb
->
links
.link_id = tr.object_id) INNER JOIN
$
wpdb
->
term_taxonomy
as tt ON tt.term_taxonomy_id = tr.term_taxonomy_id
"
;
}
if
(
$
parsed_args
[
'
show_updated
'
] ) {
$
recently_updated_test
=
'
, IF (DATE_ADD(link_updated, INTERVAL 120 MINUTE) >= NOW(), 1,0) as recently_updated
'
;
}
else
{
$
recently_updated_test
=
''
;
}
$
get_updated
= (
$
parsed_args
[
'
show_updated
'
] ) ?
'
, UNIX_TIMESTAMP(link_updated) AS link_updated_f
'
:
''
;
$
orderby
=
strtolower
(
$
parsed_args
[
'
orderby
'
] );
$
length
=
''
;
switch
(
$
orderby
) {
case
'
length
'
:
$
length
=
'
, CHAR_LENGTH(link_name) AS length
'
;
break
;
case
'
rand
'
:
$
orderby
=
'
rand()
'
;
break
;
case
'
link_id
'
:
$
orderby
=
"
$
wpdb
->
links
.link_id
"
;
break
;
default
:
$
orderparams
=
array
();
$
keys
=
array
(
'
link_id
'
,
'
link_name
'
,
'
link_url
'
,
'
link_visible
'
,
'
link_rating
'
,
'
link_owner
'
,
'
link_updated
'
,
'
link_notes
'
,
'
link_description
'
);
foreach
(
explode
(
'
,
'
,
$
orderby
)
as
$
ordparam
) {
$
ordparam
=
trim
(
$
ordparam
);
if
(
in_array
(
'
link_
'
.
$
ordparam
,
$
keys
,
true
) ) {
$
orderparams
[] =
'
link_
'
.
$
ordparam
;
}
elseif
(
in_array
(
$
ordparam
,
$
keys
,
true
) ) {
$
orderparams
[] =
$
ordparam
;
}
}
$
orderby
=
implode
(
'
,
'
,
$
orderparams
);
}
if
(
empty
(
$
orderby
) ) {
$
orderby
=
'
link_name
'
;
}
$
order
=
strtoupper
(
$
parsed_args
[
'
order
'
] );
if
(
''
!==
$
order
&& !
in_array
(
$
order
,
array
(
'
ASC
'
,
'
DESC
'
),
true
) ) {
$
order
=
'
ASC
'
;
}
$
visible
=
''
;
if
(
$
parsed_args
[
'
hide_invisible
'
] ) {
$
visible
=
"
AND link_visible = 'Y'
"
;
}
$
query
=
"
SELECT *
$
length
$
recently_updated_test
$
get_updated
FROM
$
wpdb
->
links
$
join
WHERE 1=1
$
visible
$
category_query
"
;
$
query
.=
"
$
exclusions
$
inclusions
$
search
"
;
$
query
.=
"
ORDER BY
$
orderby
$
order
"
;
if
( -
1
!=
$
parsed_args
[
'
limit
'
] ) {
$
query
.=
'
LIMIT
'
.
$
parsed_args
[
'
limit
'
];
}
$
results
=
$
wpdb
->
get_results
(
$
query
);
if
(
'
rand()
'
!==
$
orderby
) {
$
cache
[
$
key
] =
$
results
;
wp_cache_set
(
'
get_bookmarks
'
,
$
cache
,
'
bookmark
'
);
}
/** This filter is documented in wp-includes/bookmark.php */
return
apply_filters
(
'
get_bookmarks
'
,
$
results
,
$
parsed_args
);
}
/**
* Sanitizes all bookmark fields.
*
* @since 2.3.0
*
* @param stdClass|array $bookmark Bookmark row.
* @param string $context Optional. How to filter the fields. Default 'display'.
* @return stdClass|array Same type as $bookmark but with fields sanitized.
*/
function
sanitize_bookmark
(
$
bookmark
,
$
context
=
'
display
'
) {
$
fields
=
array
(
'
link_id
'
,
'
link_url
'
,
'
link_name
'
,
'
link_image
'
,
'
link_target
'
,
'
link_category
'
,
'
link_description
'
,
'
link_visible
'
,
'
link_owner
'
,
'
link_rating
'
,
'
link_updated
'
,
'
link_rel
'
,
'
link_notes
'
,
'
link_rss
'
,
);
if
(
is_object
(
$
bookmark
) ) {
$
do_object
=
true
;
$
link_id
=
$
bookmark
->
link_id
;
}
else
{
$
do_object
=
false
;
$
link_id
=
$
bookmark
[
'
link_id
'
];
}
foreach
(
$
fields
as
$
field
) {
if
(
$
do_object
) {
if
(
isset
(
$
bookmark
->
$
field
) ) {
$
bookmark
->
$
field
=
sanitize_bookmark_field
(
$
field
,
$
bookmark
->
$
field
,
$
link_id
,
$
context
);
}
}
else
{
if
(
isset
(
$
bookmark
[
$
field
] ) ) {
$
bookmark
[
$
field
] =
sanitize_bookmark_field
(
$
field
,
$
bookmark
[
$
field
],
$
link_id
,
$
context
);
}
}
}
return
$
bookmark
;
}
/**
* Sanitizes a bookmark field.
*
* Sanitizes the bookmark fields based on what the field name is. If the field
* has a strict value set, then it will be tested for that, else a more generic
* filtering is applied. After the more strict filter is applied, if the `$context`
* is 'raw' then the value is immediately return.
*
* Hooks exist for the more generic cases. With the 'edit' context, the {@see 'edit_$field'}
* filter will be called and passed the `$value` and `$bookmark_id` respectively.
*
* With the 'db' context, the {@see 'pre_$field'} filter is called and passed the value.
* The 'display' context is the final context and has the `$field` has the filter name
* and is passed the `$value`, `$bookmark_id`, and `$context`, respectively.
*
* @since 2.3.0
*
* @param string $field The bookmark field.
* @param mixed $value The bookmark field value.
* @param int $bookmark_id Bookmark ID.
* @param string $context How to filter the field value. Accepts 'raw', 'edit', 'db',
* 'display', 'attribute', or 'js'. Default 'display'.
* @return mixed The filtered value.
*/
function
sanitize_bookmark_field
(
$
field
,
$
value
,
$
bookmark_id
,
$
context
) {
$
int_fields
=
array
(
'
link_id
'
,
'
link_rating
'
);
if
(
in_array
(
$
field
,
$
int_fields
,
true
) ) {
$
value
= (
int
)
$
value
;
}
switch
(
$
field
) {
case
'
link_category
'
:
// array( ints )
$
value
=
array_map
(
'
absint
'
, (
array
)
$
value
);
// We return here so that the categories aren't filtered.
// The 'link_category' filter is for the name of a link category, not an array of a link's link categories.
return
$
value
;
case
'
link_visible
'
:
// bool stored as Y|N
$
value
=
preg_replace
(
'
/[^YNyn]/
'
,
''
,
$
value
);
break
;
case
'
link_target
'
:
// "enum"
$
targets
=
array
(
'
_top
'
,
'
_blank
'
);
if
( !
in_array
(
$
value
,
$
targets
,
true
) ) {
$
value
=
''
;
}
break
;
}
if
(
'
raw
'
===
$
context
) {
return
$
value
;
}
if
(
'
edit
'
===
$
context
) {
/** This filter is documented in wp-includes/post.php */
$
value
=
apply_filters
(
"
edit_
{
$
field
}"
,
$
value
,
$
bookmark_id
);
if
(
'
link_notes
'
===
$
field
) {
$
value
=
esc_html
(
$
value
);
// textarea_escaped
}
else
{
$
value
=
esc_attr
(
$
value
);
}
}
elseif
(
'
db
'
===
$
context
) {
/** This filter is documented in wp-includes/post.php */
$
value
=
apply_filters
(
"
pre_
{
$
field
}"
,
$
value
);
}
else
{
/** This filter is documented in wp-includes/post.php */
$
value
=
apply_filters
(
"{
$
field
}"
,
$
value
,
$
bookmark_id
,
$
context
);
if
(
'
attribute
'
===
$
context
) {
$
value
=
esc_attr
(
$
value
);
}
elseif
(
'
js
'
===
$
context
) {
$
value
=
esc_js
(
$
value
);
}
}
// Restore the type for integer fields after esc_attr().
if
(
in_array
(
$
field
,
$
int_fields
,
true
) ) {
$
value
= (
int
)
$
value
;
}
return
$
value
;
}
/**
* Deletes the bookmark cache.
*
* @since 2.7.0
*
* @param int $bookmark_id Bookmark ID.
*/
function
clean_bookmark_cache
(
$
bookmark_id
) {
wp_cache_delete
(
$
bookmark_id
,
'
bookmark
'
);
wp_cache_delete
(
'
get_bookmarks
'
,
'
bookmark
'
);
clean_object_term_cache
(
$
bookmark_id
,
'
link
'
);
}
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