mirror of
https://github.com/owncloud/bookmarks.git
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468 lines
14 KiB
PHP
468 lines
14 KiB
PHP
<?php
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/**
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* ownCloud - bookmarks plugin
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*
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* @author Arthur Schiwon
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* @copyright 2011 Arthur Schiwon blizzz@arthur-schiwon.de
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* This class manages bookmarks
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*/
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class OC_Bookmarks_Bookmarks{
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/**
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* @brief Finds all tags for bookmarks
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* @param filterTags array of tag to look for if empty then every tag
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* @param offset integer offset
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* @param limit integer of item to return
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*/
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public static function findTags($filterTags = array(), $offset = 0, $limit = 10){
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$params = array_merge($filterTags, $filterTags);
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array_unshift($params, OCP\USER::getUser());
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$not_in = '';
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if(!empty($filterTags) ) {
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$exist_clause = " AND exists (select 1 from `*PREFIX*bookmarks_tags`
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`t2` where `t2`.`bookmark_id` = `t`.`bookmark_id` and `tag` = ?) ";
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$not_in = ' AND `tag` not in ('. implode(',', array_fill(0, count($filterTags), '?') ) .')'.
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str_repeat($exist_clause, count($filterTags));
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}
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$sql = 'SELECT tag, count(*) as nbr from *PREFIX*bookmarks_tags t '.
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' WHERE EXISTS( SELECT 1 from *PREFIX*bookmarks bm where t.bookmark_id = bm.id and user_id = ?) '.
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$not_in.
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' GROUP BY `tag` ORDER BY `nbr` DESC ';
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$query = OCP\DB::prepare($sql, $limit, $offset);
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$tags = $query->execute($params)->fetchAll();
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return $tags;
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}
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public static function findOneBookmark($id) {
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$CONFIG_DBTYPE = OCP\Config::getSystemValue( 'dbtype', 'sqlite' );
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if($CONFIG_DBTYPE == 'pgsql') {
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$group_fct = 'array_agg(`tag`)';
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}
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else {
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$group_fct = 'GROUP_CONCAT(`tag`)';
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}
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$sql = "SELECT *, (select $group_fct from `*PREFIX*bookmarks_tags` where `bookmark_id` = `b`.`id`) as `tags`
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FROM `*PREFIX*bookmarks` `b`
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WHERE `user_id` = ? AND `id` = ?";
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$query = OCP\DB::prepare($sql);
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$result = $query->execute(array(OCP\USER::getUser(), $id))->fetchRow();
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$result['tags'] = explode(',', $result['tags']);
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return $result;
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}
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/**
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* @brief Finds all bookmarks, matching the filter
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* @param offset integer offset
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* @param sqlSortColumn string result with this column
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* @param filters can be: empty -> no filter, a string -> filter this, a string array -> filter for all strings
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* @param filterTagOnly boolean true, filter affects only tags, else filter affects url, title and tags
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* @param limit integer of item to return (default 10) if -1 or false then all item are returned
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* @return void
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*/
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public static function findBookmarks($offset, $sqlSortColumn, $filters, $filterTagOnly, $limit = 10) {
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$CONFIG_DBTYPE = OCP\Config::getSystemValue( 'dbtype', 'sqlite' );
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if(is_string($filters)) $filters = array($filters);
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if(! in_array($sqlSortColumn, array('id', 'url', 'title', 'user_id',
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'description', 'public', 'added', 'lastmodified','clickcount',))) {
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$sqlSortColumn = 'bookmarks_sorting_recent';
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}
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$params=array(OCP\USER::getUser());
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if($CONFIG_DBTYPE == 'pgsql') {
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$sql = "SELECT * FROM (SELECT *, (select array_to_string(array_agg(`tag`),',') from `*PREFIX*bookmarks_tags` where `bookmark_id` = `b2`.`id`) as `tags`
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FROM `*PREFIX*bookmarks` `b2`
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WHERE `user_id` = ? ) as `b` WHERE true ";
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}
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else {
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$sql = "SELECT *, (SELECT GROUP_CONCAT(`tag`) from `*PREFIX*bookmarks_tags` WHERE `bookmark_id` = `b`.`id`) as `tags`
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FROM `*PREFIX*bookmarks` `b`
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WHERE `user_id` = ? ";
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}
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if($filterTagOnly) {
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$exist_clause = " AND exists (SELECT `id` FROM `*PREFIX*bookmarks_tags`
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`t2` WHERE `t2`.`bookmark_id` = `b`.`id` AND `tag` = ?) ";
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$sql .= str_repeat($exist_clause, count($filters));
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$params = array_merge($params, $filters);
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} else {
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if($CONFIG_DBTYPE == 'mysql') { //Dirty hack to allow usage of alias in where
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$sql .= ' HAVING true ';
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}
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foreach($filters as $filter) {
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if($CONFIG_DBTYPE == 'mysql')
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$sql .= ' AND lower( concat(url,title,description,tags )) like ? ';
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else
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$sql .= ' AND lower(url || title || description || tags ) like ? ';
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$params[] = '%' . strtolower($filter) . '%';
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}
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}
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$sql .= " ORDER BY ".$sqlSortColumn." DESC ";
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if($limit == -1 || $limit === false) {
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$limit = null;
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$offset = null;
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}
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$query = OCP\DB::prepare($sql, $limit, $offset);
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$results = $query->execute($params)->fetchAll();
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$bookmarks = array();
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foreach($results as $result){
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$result['tags'] = explode(',', $result['tags']);
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$bookmarks[] = $result;
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}
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return $bookmarks;
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}
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public static function deleteUrl($id)
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{
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$user = OCP\USER::getUser();
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$query = OCP\DB::prepare("
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SELECT `id` FROM `*PREFIX*bookmarks`
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WHERE `id` = ?
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AND `user_id` = ?
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");
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$result = $query->execute(array($id, $user));
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$id = $result->fetchOne();
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if ($id === false) {
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return false;
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}
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$query = OCP\DB::prepare("
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DELETE FROM `*PREFIX*bookmarks`
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WHERE `id` = ?
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");
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$result = $query->execute(array($id));
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$query = OCP\DB::prepare("
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DELETE FROM `*PREFIX*bookmarks_tags`
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WHERE `bookmark_id` = ?
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");
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$result = $query->execute(array($id));
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return true;
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}
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public static function renameTag($old, $new)
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{
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$user_id = OCP\USER::getUser();
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$CONFIG_DBTYPE = OCP\Config::getSystemValue( 'dbtype', 'sqlite' );
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if( $CONFIG_DBTYPE == 'sqlite' or $CONFIG_DBTYPE == 'sqlite3' ) {
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// Update tags to the new label unless it already exists a tag like this
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$query = OCP\DB::prepare("
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UPDATE OR REPLACE `*PREFIX*bookmarks_tags`
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SET `tag` = ?
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WHERE `tag` = ?
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AND exists( select `b`.`id` from `*PREFIX*bookmarks` `b` WHERE `b`.`user_id` = ? AND `bookmark_id` = `b`.`id`)
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");
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$params=array(
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$new,
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$old,
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$user_id,
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);
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$result = $query->execute($params);
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} else {
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// Remove potentialy duplicated tags
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$query = OCP\DB::prepare("
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DELETE FROM `*PREFIX*bookmarks_tags` as `tgs` WHERE `tgs`.`tag` = ?
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AND exists( SELECT `id` FROM `*PREFIX*bookmarks` WHERE `user_id` = ? AND `tgs`.`bookmark_id` = `id`)
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AND exists( SELECT `t`.`tag` FROM `*PREFIX*bookmarks_tags` `t` where `t`.`tag` = ? AND `tgs`.`bookmark_id` = `t`.`bookmark_id`");
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$params=array(
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$new,
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$user_id,
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);
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$result = $query->execute($params);
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// Update tags to the new label unless it already exists a tag like this
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$query = OCP\DB::prepare("
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UPDATE `*PREFIX*bookmarks_tags`
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SET `tag` = ?
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WHERE `tag` = ?
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AND exists( SELECT `b`.`id` FROM `*PREFIX*bookmarks` `b` WHERE `b`.`user_id` = ? AND `bookmark_id` = `b`.`id`)
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");
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$params=array(
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$new,
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$old,
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$user_id,
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$old,
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);
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$result = $query->execute($params);
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}
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return true;
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}
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public static function deleteTag($old)
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{
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$user_id = OCP\USER::getUser();
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// Update the record
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$query = OCP\DB::prepare("
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DELETE FROM `*PREFIX*bookmarks_tags`
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WHERE `tag` = ?
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AND exists( SELECT `id` FROM `*PREFIX*bookmarks` WHERE `user_id` = ? AND `bookmark_id` = `id`)
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");
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$params=array(
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$old,
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$user_id,
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);
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$result = $query->execute($params);
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return $result;
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}
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/**
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* get a string corresponding to the current time depending
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* of the OC database system
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* @return string
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*/
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protected static function getNowValue() {
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$CONFIG_DBTYPE = OCP\Config::getSystemValue( "dbtype", "sqlite" );
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if( $CONFIG_DBTYPE == 'sqlite' or $CONFIG_DBTYPE == 'sqlite3' ) {
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$_ut = "strftime('%s','now')";
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} elseif($CONFIG_DBTYPE == 'pgsql') {
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$_ut = 'date_part(\'epoch\',now())::integer';
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} else {
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$_ut = "UNIX_TIMESTAMP()";
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}
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return $_ut;
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}
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/**
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* Edit a bookmark
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* @param int $id The id of the bookmark to edit
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* @param string $url
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* @param string $title Name of the bookmark
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* @param array $tags Simple array of tags to qualify the bookmark (different tags are taken from values)
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* @param string $description A longer description about the bookmark
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* @param boolean $is_public True if the bookmark is publishable to not registered users
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* @return null
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*/
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public static function editBookmark($id, $url, $title, $tags = array(), $description='', $is_public=false) {
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$is_public = $is_public ? 1 : 0;
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$user_id = OCP\USER::getUser();
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// Update the record
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$query = OCP\DB::prepare("
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UPDATE `*PREFIX*bookmarks` SET
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`url` = ?, `title` = ?, `public` = ?, `description` = ?,
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`lastmodified` = ".self::getNowValue() ."
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WHERE `id` = ?
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AND `user_id` = ?
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");
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$params=array(
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htmlspecialchars_decode($url),
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htmlspecialchars_decode($title),
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$is_public,
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htmlspecialchars_decode($description),
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$id,
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$user_id,
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);
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$result = $query->execute($params);
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// Abort the operation if bookmark couldn't be set
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// (probably because the user is not allowed to edit this bookmark)
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if ($result == 0) exit();
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// Remove old tags
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$sql = "DELETE FROM `*PREFIX*bookmarks_tags` WHERE `bookmark_id` = ?";
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$query = OCP\DB::prepare($sql);
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$query->execute(array($id));
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// Add New Tags
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self::addTags($id, $tags);
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}
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/**
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* Add a bookmark
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* @param string $url
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* @param string $title Name of the bookmark
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* @param array $tags Simple array of tags to qualify the bookmark (different tags are taken from values)
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* @param string $description A longer description about the bookmark
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* @param boolean $is_public True if the bookmark is publishable to not registered users
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* @return int The id of the bookmark created
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*/
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public static function addBookmark($url, $title, $tags=array(), $description='', $is_public=false) {
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$is_public = $is_public ? 1 : 0;
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$enc_url = htmlspecialchars_decode($url);
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$_ut = self::getNowValue();
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// Change lastmodified date if the record if already exists
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$sql = "SELECT * from `*PREFIX*bookmarks` WHERE `url` = ? AND `user_id` = ?";
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$query = OCP\DB::prepare($sql, 1);
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$result = $query->execute(array($enc_url, OCP\USER::getUser()));
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if ($row = $result->fetchRow()){
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$params = array();
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$title_str = '';
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if(trim($title) != '') { // Do we replace the old title
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$title_str = ' , title = ?';
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$params[] = $title;
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}
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$desc_str = '';
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if(trim($title) != '') { // Do we replace the old description
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$desc_str = ' , description = ?';
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$params[] = $description;
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}
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$sql = "UPDATE `*PREFIX*bookmarks` SET `lastmodified` = $_ut $title_str $desc_str WHERE `url` = ? and `user_id` = ?";
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$params[] = $enc_url;
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$params[] = OCP\USER::getUser();
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$query = OCP\DB::prepare($sql);
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$query->execute($params);
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return $row['id'];
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}
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$query = OCP\DB::prepare("
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INSERT INTO `*PREFIX*bookmarks`
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(`url`, `title`, `user_id`, `public`, `added`, `lastmodified`, `description`)
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VALUES (?, ?, ?, ?, $_ut, $_ut, ?)
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");
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$params=array(
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$enc_url,
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htmlspecialchars_decode($title),
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OCP\USER::getUser(),
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$is_public,
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$description,
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);
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$query->execute($params);
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$b_id = OCP\DB::insertid('*PREFIX*bookmarks');
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if($b_id !== false) {
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self::addTags($b_id, $tags);
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return $b_id;
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}
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}
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/**
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* Add a set of tags for a bookmark
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*
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* @param int $bookmarkId The bookmark reference
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* @param array $tags Set of tags to add to the bookmark
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* @return null
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**/
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private static function addTags($bookmarkId, $tags) {
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$sql = 'INSERT INTO `*PREFIX*bookmarks_tags` (`bookmark_id`, `tag`) select ?, ? ';
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$dbtype = OCP\Config::getSystemValue( 'dbtype', 'sqlite' );
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if ($dbtype === 'mysql') {
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$sql .= 'from dual ';
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}
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$sql .= 'where not exists(select * from oc_bookmarks_tags where bookmark_id = ? and tag = ?)';
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$query = OCP\DB::prepare($sql);
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foreach ($tags as $tag) {
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$tag = trim($tag);
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if(empty($tag)) {
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//avoid saving white spaces
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continue;
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}
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$params = array($bookmarkId, $tag, $bookmarkId, $tag);
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$query->execute($params);
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}
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}
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/**
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* Simple function to search for bookmark. call findBookmarks
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* @param array $search_words Set of words to look for in bookmars fields
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* @return array An Array of bookmarks
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**/
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public static function searchBookmarks($search_words) {
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return self::findBookmarks(0, 'id', $search_words, false);
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}
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public static function importFile($file){
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libxml_use_internal_errors(true);
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$dom = new domDocument();
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$dom->loadHTMLFile($file);
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$links = $dom->getElementsByTagName('a');
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OCP\DB::beginTransaction();
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foreach($links as $link) {
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$title = $link->nodeValue;
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$ref = $link->getAttribute("href");
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$tag_str = '';
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if($link->hasAttribute("tags"))
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$tag_str = $link->getAttribute("tags");
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$tags = explode(',', $tag_str);
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$desc_str = '';
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if($link->hasAttribute("description"))
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$desc_str = $link->getAttribute("description");
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self::addBookmark($ref, $title, $tags,$desc_str );
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}
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OCP\DB::commit();
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return array();
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}
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public static function getURLMetadata($url) {
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//allow only http(s) and (s)ftp
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$protocols = '/^[hs]{0,1}[tf]{0,1}tp[s]{0,1}\:\/\//i';
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//if not (allowed) protocol is given, assume http
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if(preg_match($protocols, $url) == 0) {
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$url = 'http://' . $url;
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}
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$metadata['url'] = $url;
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$page = OC_Util::getUrlContent($url);
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if($page) {
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if(preg_match( "/<title>(.*)<\/title>/sUi", $page, $match ) !== false)
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if(isset($match[1])) {
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$metadata['title'] = html_entity_decode($match[1], ENT_QUOTES , 'UTF-8');
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//Not the best solution but....
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$metadata['title'] = str_replace('™', chr(153), $metadata['title']);
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$metadata['title'] = str_replace('‐', '‐', $metadata['title']);
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$metadata['title'] = str_replace('–', '–', $metadata['title']);
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}
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}
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return $metadata;
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}
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public static function analyzeTagRequest($line) {
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$tags = explode(',', $line);
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$filterTag = array();
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foreach($tags as $tag){
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if(trim($tag) != '')
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$filterTag[] = trim($tag);
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}
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return $filterTag;
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}
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}
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