X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/7688c6ba71852cd89123b62b2d57683535e4702a..b137f4ce021b4022c56f452c2eafa7abfcef0a7c:/wp-includes/bookmark.php

diff --git a/wp-includes/bookmark.php b/wp-includes/bookmark.php
index 170e7dff..e1184231 100644
--- a/wp-includes/bookmark.php
+++ b/wp-includes/bookmark.php
@@ -1,25 +1,68 @@
 <?php
-
-function get_bookmark($bookmark_id, $output = OBJECT, $filter = 'raw') {
+/**
+ * Link/Bookmark API
+ *
+ * @package WordPress
+ * @subpackage Bookmark
+ */
+
+/**
+ * Retrieve Bookmark data
+ *
+ * @since 2.1.0
+ * @uses $wpdb Database Object
+ *
+ * @param mixed $bookmark
+ * @param string $output Optional. Either OBJECT, ARRAY_N, or ARRAY_A constant
+ * @param string $filter Optional, default is 'raw'.
+ * @return array|object Type returned depends on $output value.
+ */
+function get_bookmark($bookmark, $output = OBJECT, $filter = 'raw') {
 	global $wpdb;
 
-	$bookmark_id = (int) $bookmark_id;
-	$link = $wpdb->get_row("SELECT * FROM $wpdb->links WHERE link_id = '$bookmark_id' LIMIT 1");
-	$link->link_category = array_unique( wp_get_object_terms($link_id, 'link_category', 'fields=ids') );
+	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'];
+		} elseif ( ! $_bookmark = wp_cache_get($bookmark, 'bookmark') ) {
+			$_bookmark = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->links WHERE link_id = %d LIMIT 1", $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');
+		}
+	}
 
-	$link = sanitize_bookmark($link, $filter);
+	$_bookmark = sanitize_bookmark($_bookmark, $filter);
 
 	if ( $output == OBJECT ) {
-		return $link;
+		return $_bookmark;
 	} elseif ( $output == ARRAY_A ) {
-		return get_object_vars($link);
+		return get_object_vars($_bookmark);
 	} elseif ( $output == ARRAY_N ) {
-		return array_values(get_object_vars($link));
+		return array_values(get_object_vars($_bookmark));
 	} else {
-		return $link;
+		return $_bookmark;
 	}
 }
 
+/**
+ * Retrieve single bookmark data item or field.
+ *
+ * @since 2.3.0
+ * @uses get_bookmark() Gets bookmark object using $bookmark as ID
+ * @uses sanitize_bookmark_field() Sanitizes Bookmark field based on $context.
+ *
+ * @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
+ */
 function get_bookmark_field( $field, $bookmark, $context = 'display' ) {
 	$bookmark = (int) $bookmark;
 	$bookmark = get_bookmark( $bookmark );
@@ -36,11 +79,40 @@ function get_bookmark_field( $field, $bookmark, $context = 'display' ) {
 	return sanitize_bookmark_field($field, $bookmark->$field, $bookmark->link_id, $context);
 }
 
-// Deprecate
-function get_link($bookmark_id, $output = OBJECT) {
-	return get_bookmark($bookmark_id, $output);
-}
-
+/**
+ * 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.
+ *
+ * List of default arguments are as follows:
+ * 'orderby' - Default is 'name' (string). How to order the links by. String is
+ *		based off of the bookmark scheme.
+ * 'order' - Default is 'ASC' (string). Either 'ASC' or 'DESC'. Orders in either
+ *		ascending or descending order.
+ * 'limit' - Default is -1 (integer) or show all. The amount of bookmarks to
+ *		display.
+ * 'category' - Default is empty string (string). Include the links in what
+ *		category ID(s).
+ * 'category_name' - Default is empty string (string). Get links by category
+ *		name.
+ * 'hide_invisible' - Default is 1 (integer). Whether to show (default) or hide
+ *		links marked as 'invisible'.
+ * 'show_updated' - Default is 0 (integer). Will show the time of when the
+ *		bookmark was last updated.
+ * 'include' - Default is empty string (string). Include other categories
+ *		separated by commas.
+ * 'exclude' - Default is empty string (string). Exclude other categories
+ *		separated by commas.
+ *
+ * @since 2.1.0
+ * @uses $wpdb Database Object
+ * @link http://codex.wordpress.org/Template_Tags/get_bookmarks
+ *
+ * @param string|array $args List of arguments to overwrite the defaults
+ * @return array List of bookmark row objects
+ */
 function get_bookmarks($args = '') {
 	global $wpdb;
 
@@ -49,22 +121,27 @@ function get_bookmarks($args = '') {
 		'limit' => -1, 'category' => '',
 		'category_name' => '', 'hide_invisible' => 1,
 		'show_updated' => 0, 'include' => '',
-		'exclude' => ''
+		'exclude' => '', 'search' => ''
 	);
 
 	$r = wp_parse_args( $args, $defaults );
 	extract( $r, EXTR_SKIP );
 
+	$cache = array();
 	$key = md5( serialize( $r ) );
-	if ( $cache = wp_cache_get( 'get_bookmarks', 'bookmark' ) )
-		if ( isset( $cache[ $key ] ) )
+	if ( $cache = wp_cache_get( 'get_bookmarks', 'bookmark' ) ) {
+		if ( is_array($cache) && isset( $cache[ $key ] ) )
 			return apply_filters('get_bookmarks', $cache[ $key ], $r );
+	}
+
+	if ( !is_array($cache) )
+		$cache = array();
 
 	$inclusions = '';
 	if ( !empty($include) ) {
-	$exclude = '';  //ignore exclude, category, and category_name params if using include
-	$category = '';
-	$category_name = '';
+		$exclude = '';  //ignore exclude, category, and category_name params if using include
+		$category = '';
+		$category_name = '';
 		$inclinks = preg_split('/[\s,]+/',$include);
 		if ( count($inclinks) ) {
 			foreach ( $inclinks as $inclink ) {
@@ -93,9 +170,19 @@ function get_bookmarks($args = '') {
 	if (!empty($exclusions))
 		$exclusions .= ')';
 
-	if ( ! empty($category_name) ) {
-		if ( $category = get_term_by('name', $category_name, 'link_category') )
+	if ( !empty($category_name) ) {
+		if ( $category = get_term_by('name', $category_name, 'link_category') ) {
 			$category = $category->term_id;
+		} else {
+			$cache[ $key ] = array();
+			wp_cache_set( 'get_bookmarks', $cache, 'bookmark' );
+			return apply_filters( 'get_bookmarks', array(), $r );
+		}
+	}
+
+	if ( ! empty($search) ) {
+		$search = like_escape($search);
+		$search = " AND ( (link_url LIKE '%$search%') OR (link_name LIKE '%$search%') OR (link_description LIKE '%$search%') ) ";
 	}
 
 	$category_query = '';
@@ -116,38 +203,49 @@ function get_bookmarks($args = '') {
 		$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 (get_option('links_recently_updated_time')) {
+	if ( $show_updated && get_option('links_recently_updated_time') ) {
 		$recently_updated_test = ", IF (DATE_ADD(link_updated, INTERVAL " . get_option('links_recently_updated_time') . " MINUTE) >= NOW(), 1,0) as recently_updated ";
 	} else {
 		$recently_updated_test = '';
 	}
 
-	if ($show_updated) {
-		$get_updated = ", UNIX_TIMESTAMP(link_updated) AS link_updated_f ";
-	}
+	$get_updated = ( $show_updated ) ? ', UNIX_TIMESTAMP(link_updated) AS link_updated_f ' : '';
 
 	$orderby = strtolower($orderby);
 	$length = '';
-	switch ($orderby) {
+	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:
-			$orderby = "link_" . $orderby;
+			$orderparams = array();
+			foreach ( explode(',', $orderby) as $ordparam ) {
+				$ordparam = trim($ordparam);
+				if ( in_array( $ordparam, array( 'name', 'url', 'visible', 'rating', 'owner', 'updated' ) ) )
+					$orderparams[] = 'link_' . $ordparam;
+			}
+			$orderby = implode(',', $orderparams);
 	}
 
-	if ( 'link_id' == $orderby )
-		$orderby = "$wpdb->links.link_id";
+	if ( empty( $orderby ) )
+		$orderby = 'link_name';
+
+	$order = strtoupper( $order );
+	if ( '' !== $order && !in_array( $order, array( 'ASC', 'DESC' ) ) )
+		$order = 'ASC';
 
 	$visible = '';
 	if ( $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";
+	$query .= " $exclusions $inclusions $search";
 	$query .= " ORDER BY $orderby $order";
 	if ($limit != -1)
 		$query .= " LIMIT $limit";
@@ -160,72 +258,123 @@ function get_bookmarks($args = '') {
 	return apply_filters('get_bookmarks', $results, $r);
 }
 
+/**
+ * Sanitizes all bookmark fields
+ *
+ * @since 2.3.0
+ *
+ * @param object|array $bookmark Bookmark row
+ * @param string $context Optional, default is 'display'. How to filter the
+ *		fields
+ * @return object|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', );
 
-	$do_object = false;
-	if ( is_object($bookmark) )
+	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 )
-			$bookmark->$field = sanitize_bookmark_field($field, $bookmark->$field, $bookmark->link_id, $context);
-		else
-			$bookmark[$field] = sanitize_bookmark_field($field, $bookmark[$field], $bookmark['link_id'], $context);
+		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
+ * $context is 'raw' then the value is immediately return.
+ *
+ * Hooks exist for the more generic cases. With the 'edit' context, the
+ * 'edit_$field' filter will be called and passed the $value and $bookmark_id
+ * respectively. With the 'db' context, the 'pre_$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 $context How to filter the field value. Either 'raw', 'edit',
+ *		'attribute', 'js', 'db', or 'display'
+ * @return mixed The filtered value
+ */
 function sanitize_bookmark_field($field, $value, $bookmark_id, $context) {
-	$int_fields = array('link_id', 'link_rating');
-	if ( in_array($field, $int_fields) )
+	switch ( $field ) {
+	case 'link_id' : // ints
+	case 'link_rating' :
 		$value = (int) $value;
-
-	$yesno = array('link_visible');
-	if ( in_array($field, $yesno) )
+		break;
+	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;
+		break;
+	case 'link_visible' : // bool stored as Y|N
 		$value = preg_replace('/[^YNyn]/', '', $value);
-
-	if ( 'link_target' == $field ) {
+		break;
+	case 'link_target' : // "enum"
 		$targets = array('_top', '_blank');
 		if ( ! in_array($value, $targets) )
 			$value = '';
+		break;
 	}
 
 	if ( 'raw' == $context )
 		return $value;
 
 	if ( 'edit' == $context ) {
-		$format_to_edit = array('link_notes');
 		$value = apply_filters("edit_$field", $value, $bookmark_id);
 
-		if ( in_array($field, $format_to_edit) ) {
-			$value = format_to_edit($value);
+		if ( 'link_notes' == $field ) {
+			$value = esc_html( $value ); // textarea_escaped
 		} else {
-			$value = attribute_escape($value);
+			$value = esc_attr($value);
 		}
 	} else if ( 'db' == $context ) {
 		$value = apply_filters("pre_$field", $value);
 	} else {
 		// Use display filters by default.
 		$value = apply_filters($field, $value, $bookmark_id, $context);
-	}
 
-	if ( 'attribute' == $context )
-		$value = attribute_escape($value);
-	else if ( 'js' == $context )
-		$value = js_escape($value);
+		if ( 'attribute' == $context )
+			$value = esc_attr($value);
+		else if ( 'js' == $context )
+			$value = esc_js($value);
+	}
 
 	return $value;
 }
 
-function delete_get_bookmark_cache() {
+/**
+ * Deletes bookmark cache
+ *
+ * @since 2.7.0
+ * @uses wp_cache_delete() Deletes the contents of 'get_bookmarks'
+ */
+function clean_bookmark_cache($bookmark_id) {
+	wp_cache_delete( $bookmark_id, 'bookmark' );
 	wp_cache_delete( 'get_bookmarks', 'bookmark' );
 }
-add_action( 'add_link', 'delete_get_bookmark_cache' );
-add_action( 'edit_link', 'delete_get_bookmark_cache' );
-add_action( 'delete_link', 'delete_get_bookmark_cache' );
 
 ?>