| 1 |
<?php |
| 2 |
defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' ); |
| 3 |
|
| 4 |
/** |
| 5 |
* Imagify DB class. It reunites tools to work with the DB. |
| 6 |
* |
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* @since 1.6.13 |
| 8 |
* @author Grégory Viguier |
| 9 |
*/ |
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class Imagify_DB { |
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|
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/** |
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* Class version. |
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* |
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* @var string |
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*/ |
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const VERSION = '1.0.1'; |
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|
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/** |
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* Some hosts limit the number of JOINs in SQL queries, but we need them. |
| 21 |
* |
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* @since 1.6.13 |
| 23 |
* @access public |
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* @author Grégory Viguier |
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*/ |
| 26 |
public static function unlimit_joins() { |
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global $wpdb; |
| 28 |
static $done = false; |
| 29 |
|
| 30 |
if ( $done ) { |
| 31 |
return; |
| 32 |
} |
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|
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$done = true; |
| 35 |
$query = 'SET SQL_BIG_SELECTS=1'; |
| 36 |
|
| 37 |
/** |
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* Filter the SQL query allowing to remove the limit on JOINs. |
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* |
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* @since 1.6.13 |
| 41 |
* @author Grégory Viguier |
| 42 |
* |
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* @param string|bool $query The query. False to prevent any query. |
| 44 |
*/ |
| 45 |
$query = apply_filters( 'imagify_db_unlimit_joins_query', $query ); |
| 46 |
|
| 47 |
if ( $query && is_string( $query ) ) { |
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$wpdb->query( $query ); // WPCS: unprepared SQL ok. |
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} |
| 50 |
} |
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|
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/** |
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* Change an array of values into a comma separated list, ready to be used in a `IN ()` clause. |
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* |
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* @since 1.6.13 |
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* @access public |
| 57 |
* @author Grégory Viguier |
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* |
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* @param array $values An array of values. |
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* @return string A comma separated list of values. |
| 61 |
*/ |
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public static function prepare_values_list( $values ) { |
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$values = esc_sql( (array) $values ); |
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$values = array_map( array( __CLASS__, 'quote_string' ), $values ); |
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return implode( ',', $values ); |
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} |
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|
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/** |
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* Wrap a value in quotes, unless it's an integer. |
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* |
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* @since 1.6.13 |
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* @access public |
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* @author Grégory Viguier |
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* |
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* @param int|string $value A value. |
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* @return int|string |
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*/ |
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public static function quote_string( $value ) { |
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return is_numeric( $value ) ? $value : "'" . addcslashes( $value, "'" ) . "'"; |
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} |
| 81 |
|
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/** |
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* First half of escaping for LIKE special characters % and _ before preparing for MySQL. |
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* Use this only before wpdb::prepare() or esc_sql(). Reversing the order is very bad for security. |
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* |
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* Example Prepared Statement: |
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* $wild = '%'; |
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* $find = 'only 43% of planets'; |
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* $like = $wild . $wpdb->esc_like( $find ) . $wild; |
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* $sql = $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_content LIKE %s", $like ); |
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* |
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* Example Escape Chain: |
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* $sql = esc_sql( $wpdb->esc_like( $input ) ); |
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* |
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* @since 1.7 |
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* @access public |
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* @author Grégory Viguier |
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* |
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* @param string $text The raw text to be escaped. The input typed by the user should have no extra or deleted slashes. |
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* @return string Text in the form of a LIKE phrase. The output is not SQL safe. Call $wpdb::prepare() or real_escape next. |
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*/ |
| 102 |
public static function esc_like( $text ) { |
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global $wpdb; |
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|
| 105 |
if ( method_exists( $wpdb, 'esc_like' ) ) { |
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// Introduced in WP 4.0.0. |
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return $wpdb->esc_like( $text ); |
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} |
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|
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return addcslashes( $text, '_%\\' ); |
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} |
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|
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/** |
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* Get Imagify mime types, ready to be used in a `IN ()` clause. |
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* |
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* @since 1.6.13 |
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* @since 1.9 Added $type parameter. |
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* @access public |
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* @author Grégory Viguier |
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* |
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* @param string $type One of 'image', 'not-image'. Any other value will return all mime types. |
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* @return string A comma separated list of mime types. |
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*/ |
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public static function get_mime_types( $type = null ) { |
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static $mime_types = []; |
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|
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if ( empty( $type ) ) { |
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$type = 'all'; |
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} |
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|
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if ( ! isset( $mime_types[ $type ] ) ) { |
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$mime_types[ $type ] = self::prepare_values_list( imagify_get_mime_types( $type ) ); |
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} |
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|
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return $mime_types[ $type ]; |
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} |
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|
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/** |
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* Get post statuses related to attachments, ready to be used in a `IN ()` clause. |
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* |
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* @since 1.7 |
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* @access public |
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* @author Grégory Viguier |
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* |
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* @return string A comma separated list of post statuses. |
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*/ |
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public static function get_post_statuses() { |
| 148 |
static $statuses; |
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|
| 150 |
if ( ! isset( $statuses ) ) { |
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$statuses = self::prepare_values_list( imagify_get_post_statuses() ); |
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} |
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|
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return $statuses; |
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} |
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|
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/** |
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* Get the SQL JOIN clause to use to get only attachments that have the required WP metadata. |
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* It returns an empty string if the database has no attachments without the required metadada. |
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* It also triggers Imagify_DB::unlimit_joins(). |
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* |
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* @since 1.7 |
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* @access public |
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* @author Grégory Viguier |
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* |
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* @param string $id_field An ID field to match the metadata ID against in the JOIN clause. |
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* Default is the posts table `ID` field, using the `p` alias: `p.ID`. |
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* In case of "false" value or PEBKAC, fallback to the same field without alias. |
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* @param bool $matching Set to false to get a query to fetch metas NOT matching the file extensions. |
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* @param bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
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* @return string |
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*/ |
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public static function get_required_wp_metadata_join_clause( $id_field = 'p.ID', $matching = true, $test = true ) { |
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global $wpdb; |
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|
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if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
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return ''; |
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} |
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|
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self::unlimit_joins(); |
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$clause = ''; |
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|
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if ( ! $id_field || ! is_string( $id_field ) ) { |
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$id_field = "$wpdb->posts.ID"; |
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} |
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|
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$join = $matching ? 'INNER' : 'LEFT'; |
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|
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foreach ( self::get_required_wp_metadata_aliases() as $meta_name => $alias ) { |
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$clause .= " |
| 191 |
$join JOIN $wpdb->postmeta AS $alias |
| 192 |
ON ( $id_field = $alias.post_id AND $alias.meta_key = '$meta_name' )"; |
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} |
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|
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return $clause; |
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} |
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|
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/** |
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* Get the SQL part to be used in a WHERE clause, to get only attachments that have (in)valid '_wp_attached_file' and '_wp_attachment_metadata' metadatas. |
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* It returns an empty string if the database has no attachments without the required metadada. |
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* |
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* @since 1.7 |
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* @since 1.7.1.2 Use a single $arg parameter instead of 3. New $prepared parameter. |
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* @access public |
| 205 |
* @author Grégory Viguier |
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* |
| 207 |
* @param array $args { |
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* Optional. An array of arguments. |
| 209 |
* |
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* string $aliases The aliases to use for the meta values. |
| 211 |
* bool $matching Set to false to get a query to fetch invalid metas. |
| 212 |
* bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
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* bool $prepared Set to true if the query will be prepared with using $wpdb->prepare(). |
| 214 |
* }. |
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* @return string A query. |
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*/ |
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public static function get_required_wp_metadata_where_clause( $args = array() ) { |
| 218 |
static $query = array(); |
| 219 |
|
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$args = imagify_merge_intersect( $args, array( |
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'aliases' => array(), |
| 222 |
'matching' => true, |
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'test' => true, |
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'prepared' => false, |
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) ); |
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|
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list( $aliases, $matching, $test, $prepared ) = array_values( $args ); |
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|
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if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
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return ''; |
| 231 |
} |
| 232 |
|
| 233 |
if ( $aliases && is_string( $aliases ) ) { |
| 234 |
$aliases = array( |
| 235 |
'_wp_attached_file' => $aliases, |
| 236 |
); |
| 237 |
} elseif ( ! is_array( $aliases ) ) { |
| 238 |
$aliases = array(); |
| 239 |
} |
| 240 |
|
| 241 |
$aliases = imagify_merge_intersect( $aliases, self::get_required_wp_metadata_aliases() ); |
| 242 |
$key = implode( '|', $aliases ) . '|' . (int) $matching; |
| 243 |
|
| 244 |
if ( isset( $query[ $key ] ) ) { |
| 245 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 246 |
} |
| 247 |
|
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unset( $args['prepared'] ); |
| 249 |
$alias_1 = $aliases['_wp_attached_file']; |
| 250 |
$alias_2 = $aliases['_wp_attachment_metadata']; |
| 251 |
$extensions = self::get_extensions_where_clause( $args ); |
| 252 |
|
| 253 |
if ( $matching ) { |
| 254 |
$query[ $key ] = "AND $alias_1.meta_value NOT LIKE '%://%' AND $alias_1.meta_value NOT LIKE '_:\\\\\%' $extensions"; |
| 255 |
} else { |
| 256 |
$query[ $key ] = "AND ( $alias_2.meta_value IS NULL OR $alias_1.meta_value IS NULL OR $alias_1.meta_value LIKE '%://%' OR $alias_1.meta_value LIKE '_:\\\\\%' $extensions )"; |
| 257 |
} |
| 258 |
|
| 259 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 260 |
} |
| 261 |
|
| 262 |
/** |
| 263 |
* Get the SQL part to be used in a WHERE clause, to get only attachments that have a valid file extensions. |
| 264 |
* It returns an empty string if the database has no attachments without the required metadada. |
| 265 |
* |
| 266 |
* @since 1.7 |
| 267 |
* @since 1.7.1.2 Use a single $arg parameter instead of 3. New $prepared parameter. |
| 268 |
* @access public |
| 269 |
* @author Grégory Viguier |
| 270 |
* |
| 271 |
* @param array $args { |
| 272 |
* Optional. An array of arguments. |
| 273 |
* |
| 274 |
* string $alias The alias to use for the meta value. |
| 275 |
* bool $matching Set to false to get a query to fetch metas NOT matching the file extensions. |
| 276 |
* bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
| 277 |
* bool $prepared Set to true if the query will be prepared with using $wpdb->prepare(). |
| 278 |
* }. |
| 279 |
* @return string A query. |
| 280 |
*/ |
| 281 |
public static function get_extensions_where_clause( $args = false ) { |
| 282 |
static $extensions; |
| 283 |
static $query = array(); |
| 284 |
|
| 285 |
$args = imagify_merge_intersect( $args, array( |
| 286 |
'alias' => array(), |
| 287 |
'matching' => true, |
| 288 |
'test' => true, |
| 289 |
'prepared' => false, |
| 290 |
) ); |
| 291 |
|
| 292 |
list( $alias, $matching, $test, $prepared ) = array_values( $args ); |
| 293 |
|
| 294 |
if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
| 295 |
return ''; |
| 296 |
} |
| 297 |
|
| 298 |
if ( ! isset( $extensions ) ) { |
| 299 |
$extensions = array_keys( imagify_get_mime_types() ); |
| 300 |
$extensions = implode( '|', $extensions ); |
| 301 |
$extensions = explode( '|', $extensions ); |
| 302 |
} |
| 303 |
|
| 304 |
if ( ! $alias ) { |
| 305 |
$alias = self::get_required_wp_metadata_aliases(); |
| 306 |
$alias = $alias['_wp_attached_file']; |
| 307 |
} |
| 308 |
|
| 309 |
$key = $alias . '|' . (int) $matching; |
| 310 |
|
| 311 |
if ( isset( $query[ $key ] ) ) { |
| 312 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 313 |
} |
| 314 |
|
| 315 |
if ( $matching ) { |
| 316 |
$query[ $key ] = "AND ( LOWER( $alias.meta_value ) LIKE '%." . implode( "' OR LOWER( $alias.meta_value ) LIKE '%.", $extensions ) . "' )"; |
| 317 |
} else { |
| 318 |
$query[ $key ] = "OR ( LOWER( $alias.meta_value ) NOT LIKE '%." . implode( "' AND LOWER( $alias.meta_value ) NOT LIKE '%.", $extensions ) . "' )"; |
| 319 |
} |
| 320 |
|
| 321 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 322 |
} |
| 323 |
|
| 324 |
/** |
| 325 |
* Get the aliases used for the metas in self::get_required_wp_metadata_join_clause(), self::get_required_wp_metadata_where_clause(), and self::get_extensions_where_clause(). |
| 326 |
* |
| 327 |
* @since 1.7 |
| 328 |
* @access public |
| 329 |
* @author Grégory Viguier |
| 330 |
* |
| 331 |
* @return array An array with the meta name as key and its alias as value. |
| 332 |
*/ |
| 333 |
public static function get_required_wp_metadata_aliases() { |
| 334 |
return array( |
| 335 |
'_wp_attached_file' => 'imrwpmt1', |
| 336 |
'_wp_attachment_metadata' => 'imrwpmt2', |
| 337 |
); |
| 338 |
} |
| 339 |
|
| 340 |
/** |
| 341 |
* Combine two arrays with some specific keys. |
| 342 |
* We use this function to combine the result of 2 SQL queries. |
| 343 |
* |
| 344 |
* @since 1.6.13 |
| 345 |
* @access public |
| 346 |
* @author Grégory Viguier |
| 347 |
* |
| 348 |
* @param array $keys An array of keys. |
| 349 |
* @param array $values An array of arrays like array( 'id' => id, 'value' => value ). |
| 350 |
* @param int $keep_keys_order Set to true to return an array ordered like $keys instead of $values. |
| 351 |
* @return array The combined arrays. |
| 352 |
*/ |
| 353 |
public static function combine_query_results( $keys, $values, $keep_keys_order = false ) { |
| 354 |
if ( ! $keys || ! $values ) { |
| 355 |
return array(); |
| 356 |
} |
| 357 |
|
| 358 |
$result = array(); |
| 359 |
$keys = array_flip( $keys ); |
| 360 |
|
| 361 |
foreach ( $values as $v ) { |
| 362 |
if ( isset( $keys[ $v['id'] ] ) ) { |
| 363 |
$result[ $v['id'] ] = $v['value']; |
| 364 |
} |
| 365 |
} |
| 366 |
|
| 367 |
if ( $keep_keys_order ) { |
| 368 |
$keys = array_intersect_key( $keys, $result ); |
| 369 |
return array_replace( $keys, $result ); |
| 370 |
} |
| 371 |
|
| 372 |
return $result; |
| 373 |
} |
| 374 |
|
| 375 |
/** |
| 376 |
* A helper to retrieve all values from one or several post metas, given a list of post IDs. |
| 377 |
* The $wpdb cache is flushed to save memory. |
| 378 |
* |
| 379 |
* @since 1.6.13 |
| 380 |
* @access public |
| 381 |
* @author Grégory Viguier |
| 382 |
* |
| 383 |
* @param array $metas An array of meta names like: |
| 384 |
* array( |
| 385 |
* 'key1' => 'meta_name_1', |
| 386 |
* 'key2' => 'meta_name_2', |
| 387 |
* 'key3' => 'meta_name_3', |
| 388 |
* ) |
| 389 |
* If a key contains 'data', the results will be unserialized. |
| 390 |
* @param array $ids An array of post IDs. |
| 391 |
* @return array An array of arrays of results like: |
| 392 |
* array( |
| 393 |
* 'key1' => array( post_id_1 => 'result_1', post_id_2 => 'result_2', post_id_3 => 'result_3' ), |
| 394 |
* 'key2' => array( post_id_1 => 'result_4', post_id_3 => 'result_5' ), |
| 395 |
* 'key3' => array( post_id_1 => 'result_6', post_id_2 => 'result_7' ), |
| 396 |
* ) |
| 397 |
*/ |
| 398 |
public static function get_metas( $metas, $ids ) { |
| 399 |
global $wpdb; |
| 400 |
|
| 401 |
if ( ! $ids ) { |
| 402 |
return array_fill_keys( array_keys( $metas ), array() ); |
| 403 |
} |
| 404 |
|
| 405 |
$sql_ids = implode( ',', $ids ); |
| 406 |
|
| 407 |
foreach ( $metas as $result_name => $meta_name ) { |
| 408 |
$metas[ $result_name ] = $wpdb->get_results( // WPCS: unprepared SQL ok. |
| 409 |
"SELECT pm.post_id as id, pm.meta_value as value |
| 410 |
FROM $wpdb->postmeta as pm |
| 411 |
WHERE pm.meta_key = '$meta_name' |
| 412 |
AND pm.post_id IN ( $sql_ids ) |
| 413 |
ORDER BY pm.post_id DESC", |
| 414 |
ARRAY_A |
| 415 |
); |
| 416 |
|
| 417 |
$wpdb->flush(); |
| 418 |
$metas[ $result_name ] = self::combine_query_results( $ids, $metas[ $result_name ], true ); |
| 419 |
|
| 420 |
if ( strpos( $result_name, 'data' ) !== false ) { |
| 421 |
$metas[ $result_name ] = array_map( 'maybe_unserialize', $metas[ $result_name ] ); |
| 422 |
} |
| 423 |
} |
| 424 |
|
| 425 |
return $metas; |
| 426 |
} |
| 427 |
|
| 428 |
/** |
| 429 |
* Create/Upgrade the table in the database. |
| 430 |
* |
| 431 |
* @since 1.7 |
| 432 |
* @access public |
| 433 |
* @author Grégory Viguier |
| 434 |
* |
| 435 |
* @param string $table_name The (prefixed) table name. |
| 436 |
* @param string $schema_query Query representing the table schema. |
| 437 |
* @return bool True on success. False otherwise. |
| 438 |
*/ |
| 439 |
public static function create_table( $table_name, $schema_query ) { |
| 440 |
global $wpdb; |
| 441 |
|
| 442 |
require_once ABSPATH . 'wp-admin/includes/upgrade.php'; |
| 443 |
|
| 444 |
$wpdb->hide_errors(); |
| 445 |
|
| 446 |
$schema_query = trim( $schema_query ); |
| 447 |
$charset_collate = $wpdb->get_charset_collate(); |
| 448 |
|
| 449 |
dbDelta( "CREATE TABLE $table_name ($schema_query) $charset_collate;" ); |
| 450 |
|
| 451 |
return empty( $wpdb->last_error ) && self::table_exists( $table_name ); |
| 452 |
} |
| 453 |
|
| 454 |
/** |
| 455 |
* Tell if the given table exists. |
| 456 |
* |
| 457 |
* @since 1.7 |
| 458 |
* @access public |
| 459 |
* @author Grégory Viguier |
| 460 |
* |
| 461 |
* @param string $table_name Full name of the table (with DB prefix). |
| 462 |
* @return bool |
| 463 |
*/ |
| 464 |
public static function table_exists( $table_name ) { |
| 465 |
global $wpdb; |
| 466 |
|
| 467 |
$escaped_table = self::esc_like( $table_name ); |
| 468 |
$result = $wpdb->get_var( $wpdb->prepare( 'SHOW TABLES LIKE %s', $escaped_table ) ); |
| 469 |
|
| 470 |
return $result === $table_name; |
| 471 |
} |
| 472 |
|
| 473 |
/** |
| 474 |
* Cache transients used for optimization process locks. |
| 475 |
* |
| 476 |
* @since 1.9 |
| 477 |
* @access public |
| 478 |
* @author Grégory Viguier |
| 479 |
* |
| 480 |
* @param string $context The context. |
| 481 |
* @param array $media_ids The media IDs. |
| 482 |
*/ |
| 483 |
public static function cache_process_locks( $context, $media_ids ) { |
| 484 |
global $wpdb; |
| 485 |
|
| 486 |
if ( ! $context || ! $media_ids || wp_using_ext_object_cache() ) { |
| 487 |
return; |
| 488 |
} |
| 489 |
|
| 490 |
// Sanitize the IDs. |
| 491 |
$media_ids = array_filter( $media_ids ); |
| 492 |
$media_ids = array_unique( $media_ids ); |
| 493 |
|
| 494 |
if ( ! $media_ids ) { |
| 495 |
return; |
| 496 |
} |
| 497 |
|
| 498 |
$context_instance = imagify_get_context( $context ); |
| 499 |
$context = $context_instance->get_name(); |
| 500 |
$process_class_name = imagify_get_optimization_process_class_name( $context ); |
| 501 |
$transient_name = sprintf( $process_class_name::LOCK_NAME, $context, '%' ); |
| 502 |
$is_network_wide = $context_instance->is_network_wide(); |
| 503 |
|
| 504 |
// Do 1 DB query per context (and cache results) before doing 1 get_transient() (2 DB queries) per media ID. |
| 505 |
$prefix = $is_network_wide ? '_site_transient_' : '_transient_'; |
| 506 |
|
| 507 |
if ( $is_network_wide && is_multisite() ) { |
| 508 |
$network_id = function_exists( 'get_current_network_id' ) ? get_current_network_id() : (int) $wpdb->siteid; |
| 509 |
$cache_prefix = "$network_id:"; |
| 510 |
$notoptions_key = "$network_id:notoptions"; |
| 511 |
$cache_group = 'site-options'; |
| 512 |
$results = $wpdb->get_results( |
| 513 |
$wpdb->prepare( |
| 514 |
"SELECT meta_key as name, meta_value as value FROM $wpdb->sitemeta WHERE ( meta_key LIKE %s OR meta_key LIKE %s ) AND site_id = %d", |
| 515 |
$prefix . $transient_name, |
| 516 |
$prefix . 'timeout_' . $transient_name, |
| 517 |
$network_id |
| 518 |
), |
| 519 |
OBJECT_K |
| 520 |
); // WPCS: unprepared SQL ok. |
| 521 |
} else { |
| 522 |
$cache_prefix = ''; |
| 523 |
$notoptions_key = 'notoptions'; |
| 524 |
$cache_group = 'options'; |
| 525 |
$results = $wpdb->get_results( |
| 526 |
$wpdb->prepare( |
| 527 |
"SELECT option_name as name, option_value as value FROM $wpdb->options WHERE ( option_name LIKE %s OR option_name LIKE %s )", |
| 528 |
$prefix . $transient_name, |
| 529 |
$prefix . 'timeout_' . $transient_name |
| 530 |
), |
| 531 |
OBJECT_K |
| 532 |
); // WPCS: unprepared SQL ok. |
| 533 |
} |
| 534 |
|
| 535 |
$not_exist = []; |
| 536 |
|
| 537 |
foreach ( [ '', 'timeout_' ] as $maybe_timeout ) { |
| 538 |
foreach ( $media_ids as $id ) { |
| 539 |
$option_name = $prefix . $maybe_timeout . str_replace( '%', $id, $transient_name ); |
| 540 |
|
| 541 |
if ( isset( $results[ $option_name ] ) ) { |
| 542 |
// Cache the value. |
| 543 |
$value = $results[ $option_name ]->value; |
| 544 |
$value = maybe_unserialize( $value ); |
| 545 |
wp_cache_set( "$cache_prefix$option_name", $value, $cache_group ); |
| 546 |
} else { |
| 547 |
// No value. |
| 548 |
$not_exist[ $option_name ] = true; |
| 549 |
} |
| 550 |
} |
| 551 |
} |
| 552 |
|
| 553 |
if ( ! $not_exist ) { |
| 554 |
return; |
| 555 |
} |
| 556 |
|
| 557 |
// Cache the options that don't exist in the DB. |
| 558 |
$notoptions = wp_cache_get( $notoptions_key, $cache_group ); |
| 559 |
$notoptions = is_array( $notoptions ) ? $notoptions : []; |
| 560 |
$notoptions = array_merge( $notoptions, $not_exist ); |
| 561 |
|
| 562 |
wp_cache_set( $notoptions_key, $notoptions, $cache_group ); |
| 563 |
} |
| 564 |
} |
| 565 |
|
