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/home/jambtst2015/public_html/wp-admin/includes/bookmark.php

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<?php
/**
 * WordPress Bookmark Administration API
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * Add a link to using values provided in $_POST.
 *
 * @since 2.0.0
 *
 * @return int|WP_Error Value 0 or WP_Error on failure. The link ID on success.
 */
function add_link() {
	return edit_link();
}

/**
 * Updates or inserts a link using values provided in $_POST.
 *
 * @since 2.0.0
 *
 * @param int $link_id Optional. ID of the link to edit. Default 0.
 * @return int|WP_Error Value 0 or WP_Error on failure. The link ID on success.
 */
function edit_link( $link_id = 0 ) {
	if ( ! current_user_can( 'manage_links' ) ) {
		wp_die(
			'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
			'<p>' . __( 'Sorry, you are not allowed to edit the links for this site.' ) . '</p>',
			403
		);
	}

$_POST['link_url']   = esc_html( $_POST['link_url'] );
	$_POST['link_url']   = esc_url( $_POST['link_url'] );
	$_POST['link_name']  = esc_html( $_POST['link_name'] );
	$_POST['link_image'] = esc_html( $_POST['link_image'] );
	$_POST['link_rss']   = esc_url( $_POST['link_rss'] );
	if ( ! isset( $_POST['link_visible'] ) || 'N' !== $_POST['link_visible'] ) {
		$_POST['link_visible'] = 'Y';
	}

if ( ! empty( $link_id ) ) {
		$_POST['link_id'] = $link_id;
		return wp_update_link( $_POST );
	} else {
		return wp_insert_link( $_POST );
	}
}

/**
 * Retrieves the default link for editing.
 *
 * @since 2.0.0
 *
 * @return stdClass Default link object.
 */
function get_default_link_to_edit() {
	$link = new stdClass;
	if ( isset( $_GET['linkurl'] ) ) {
		$link->link_url = esc_url( wp_unslash( $_GET['linkurl'] ) );
	} else {
		$link->link_url = '';
	}

if ( isset( $_GET['name'] ) ) {
		$link->link_name = esc_attr( wp_unslash( $_GET['name'] ) );
	} else {
		$link->link_name = '';
	}

$link->link_visible = 'Y';

return $link;
}

/**
 * Deletes a specified link from the database.
 *
 * @since 2.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int $link_id ID of the link to delete
 * @return true Always true.
 */
function wp_delete_link( $link_id ) {
	global $wpdb;
	/**
	 * Fires before a link is deleted.
	 *
	 * @since 2.0.0
	 *
	 * @param int $link_id ID of the link to delete.
	 */
	do_action( 'delete_link', $link_id );

wp_delete_object_term_relationships( $link_id, 'link_category' );

$wpdb->delete( $wpdb->links, array( 'link_id' => $link_id ) );

/**
	 * Fires after a link has been deleted.
	 *
	 * @since 2.2.0
	 *
	 * @param int $link_id ID of the deleted link.
	 */
	do_action( 'deleted_link', $link_id );

clean_bookmark_cache( $link_id );

return true;
}

/**
 * Retrieves the link category IDs associated with the link specified.
 *
 * @since 2.1.0
 *
 * @param int $link_id Link ID to look up.
 * @return int[] The IDs of the requested link's categories.
 */
function wp_get_link_cats( $link_id = 0 ) {
	$cats = wp_get_object_terms( $link_id, 'link_category', array( 'fields' => 'ids' ) );
	return array_unique( $cats );
}

/**
 * Retrieves link data based on its ID.
 *
 * @since 2.0.0
 *
 * @param int|stdClass $link Link ID or object to retrieve.
 * @return object Link object for editing.
 */
function get_link_to_edit( $link ) {
	return get_bookmark( $link, OBJECT, 'edit' );
}

/**
 * Inserts/updates links into/in the database.
 *
 * @since 2.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param array $linkdata Elements that make up the link to insert.
 * @param bool  $wp_error Optional. Whether to return a WP_Error object on failure. Default false.
 * @return int|WP_Error Value 0 or WP_Error on failure. The link ID on success.
 */
function wp_insert_link( $linkdata, $wp_error = false ) {
	global $wpdb;

$defaults = array(
		'link_id'     => 0,
		'link_name'   => '',
		'link_url'    => '',
		'link_rating' => 0,
	);

$parsed_args = wp_parse_args( $linkdata, $defaults );
	$parsed_args = wp_unslash( sanitize_bookmark( $parsed_args, 'db' ) );

$link_id   = $parsed_args['link_id'];
	$link_name = $parsed_args['link_name'];
	$link_url  = $parsed_args['link_url'];

$update = false;
	if ( ! empty( $link_id ) ) {
		$update = true;
	}

if ( '' === trim( $link_name ) ) {
		if ( '' !== trim( $link_url ) ) {
			$link_name = $link_url;
		} else {
			return 0;
		}
	}

if ( '' === trim( $link_url ) ) {
		return 0;
	}

$link_rating      = ( ! empty( $parsed_args['link_rating'] ) ) ? $parsed_args['link_rating'] : 0;
	$link_image       = ( ! empty( $parsed_args['link_image'] ) ) ? $parsed_args['link_image'] : '';
	$link_target      = ( ! empty( $parsed_args['link_target'] ) ) ? $parsed_args['link_target'] : '';
	$link_visible     = ( ! empty( $parsed_args['link_visible'] ) ) ? $parsed_args['link_visible'] : 'Y';
	$link_owner       = ( ! empty( $parsed_args['link_owner'] ) ) ? $parsed_args['link_owner'] : get_current_user_id();
	$link_notes       = ( ! empty( $parsed_args['link_notes'] ) ) ? $parsed_args['link_notes'] : '';
	$link_description = ( ! empty( $parsed_args['link_description'] ) ) ? $parsed_args['link_description'] : '';
	$link_rss         = ( ! empty( $parsed_args['link_rss'] ) ) ? $parsed_args['link_rss'] : '';
	$link_rel         = ( ! empty( $parsed_args['link_rel'] ) ) ? $parsed_args['link_rel'] : '';
	$link_category    = ( ! empty( $parsed_args['link_category'] ) ) ? $parsed_args['link_category'] : array();

// Make sure we set a valid category.
	if ( ! is_array( $link_category ) || 0 === count( $link_category ) ) {
		$link_category = array( get_option( 'default_link_category' ) );
	}

if ( $update ) {
		if ( false === $wpdb->update( $wpdb->links, compact( 'link_url', 'link_name', 'link_image', 'link_target', 'link_description', 'link_visible', 'link_owner', 'link_rating', 'link_rel', 'link_notes', 'link_rss' ), compact( 'link_id' ) ) ) {
			if ( $wp_error ) {
				return new WP_Error( 'db_update_error', __( 'Could not update link in the database.' ), $wpdb->last_error );
			} else {
				return 0;
			}
		}
	} else {
		if ( false === $wpdb->insert( $wpdb->links, compact( 'link_url', 'link_name', 'link_image', 'link_target', 'link_description', 'link_visible', 'link_owner', 'link_rating', 'link_rel', 'link_notes', 'link_rss' ) ) ) {
			if ( $wp_error ) {
				return new WP_Error( 'db_insert_error', __( 'Could not insert link into the database.' ), $wpdb->last_error );
			} else {
				return 0;
			}
		}
		$link_id = (int) $wpdb->insert_id;
	}

wp_set_link_cats( $link_id, $link_category );

if ( $update ) {
		/**
		 * Fires after a link was updated in the database.
		 *
		 * @since 2.0.0
		 *
		 * @param int $link_id ID of the link that was updated.
		 */
		do_action( 'edit_link', $link_id );
	} else {
		/**
		 * Fires after a link was added to the database.
		 *
		 * @since 2.0.0
		 *
		 * @param int $link_id ID of the link that was added.
		 */
		do_action( 'add_link', $link_id );
	}
	clean_bookmark_cache( $link_id );

return $link_id;
}

/**
 * Update link with the specified link categories.
 *
 * @since 2.1.0
 *
 * @param int   $link_id         ID of the link to update.
 * @param int[] $link_categories Array of link category IDs to add the link to.
 */
function wp_set_link_cats( $link_id = 0, $link_categories = array() ) {
	// If $link_categories isn't already an array, make it one:
	if ( ! is_array( $link_categories ) || 0 === count( $link_categories ) ) {
		$link_categories = array( get_option( 'default_link_category' ) );
	}

$link_categories = array_map( 'intval', $link_categories );
	$link_categories = array_unique( $link_categories );

wp_set_object_terms( $link_id, $link_categories, 'link_category' );

clean_bookmark_cache( $link_id );
}

/**
 * Updates a link in the database.
 *
 * @since 2.0.0
 *
 * @param array $linkdata Link data to update.
 * @return int|WP_Error Value 0 or WP_Error on failure. The updated link ID on success.
 */
function wp_update_link( $linkdata ) {
	$link_id = (int) $linkdata['link_id'];

$link = get_bookmark( $link_id, ARRAY_A );

// Escape data pulled from DB.
	$link = wp_slash( $link );

// Passed link category list overwrites existing category list if not empty.
	if ( isset( $linkdata['link_category'] ) && is_array( $linkdata['link_category'] )
		&& count( $linkdata['link_category'] ) > 0
	) {
		$link_cats = $linkdata['link_category'];
	} else {
		$link_cats = $link['link_category'];
	}

// Merge old and new fields with new fields overwriting old ones.
	$linkdata                  = array_merge( $link, $linkdata );
	$linkdata['link_category'] = $link_cats;

return wp_insert_link( $linkdata );
}

/**
 * Outputs the 'disabled' message for the WordPress Link Manager.
 *
 * @since 3.5.0
 * @access private
 *
 * @global string $pagenow
 */
function wp_link_manager_disabled_message() {
	global $pagenow;

if ( ! in_array( $pagenow, array( 'link-manager.php', 'link-add.php', 'link.php' ), true ) ) {
		return;
	}

add_filter( 'pre_option_link_manager_enabled', '__return_true', 100 );
	$really_can_manage_links = current_user_can( 'manage_links' );
	remove_filter( 'pre_option_link_manager_enabled', '__return_true', 100 );

if ( $really_can_manage_links && current_user_can( 'install_plugins' ) ) {
		$link = network_admin_url( 'plugin-install.php?tab=search&amp;s=Link+Manager' );
		/* translators: %s: URL to install the Link Manager plugin. */
		wp_die( sprintf( __( 'If you are looking to use the link manager, please install the <a href="%s">Link Manager</a> plugin.' ), $link ) );
	}

wp_die( __( 'Sorry, you are not allowed to edit the links for this site.' ) );
}

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