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Editing: MySQL.php
<?php // SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue // SPDX-License-Identifier: BSD-3-Clause declare(strict_types=1); namespace SimplePie\Cache; /** * Caches data to a MySQL database * * Registered for URLs with the "mysql" protocol * * For example, `mysql://root:password@localhost:3306/mydb?prefix=sp_` will * connect to the `mydb` database on `localhost` on port 3306, with the user * `root` and the password `password`. All tables will be prefixed with `sp_` * * @deprecated since SimplePie 1.8.0, use implementation of "Psr\SimpleCache\CacheInterface" instead */ class MySQL extends DB { /** * PDO instance * * @var \PDO|null */ protected $mysql; /** * Options * * @var array<string, mixed> */ protected $options; /** * Cache ID * * @var string */ protected $id; /** * Create a new cache object * * @param string $location Location string (from SimplePie::$cache_location) * @param string $name Unique ID for the cache * @param Base::TYPE_FEED|Base::TYPE_IMAGE $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data */ public function __construct(string $location, string $name, $type) { $this->options = [ 'user' => null, 'pass' => null, 'host' => '127.0.0.1', 'port' => '3306', 'path' => '', 'extras' => [ 'prefix' => '', 'cache_purge_time' => 2592000 ], ]; $this->options = array_replace_recursive($this->options, \SimplePie\Cache::parse_URL($location)); // Path is prefixed with a "/" $this->options['dbname'] = substr($this->options['path'], 1); try { $this->mysql = new \PDO("mysql:dbname={$this->options['dbname']};host={$this->options['host']};port={$this->options['port']}", $this->options['user'], $this->options['pass'], [\PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8']); } catch (\PDOException $e) { $this->mysql = null; return; } $this->id = $name . $type; if (!$query = $this->mysql->query('SHOW TABLES')) { $this->mysql = null; return; } $db = []; while ($row = $query->fetchColumn()) { $db[] = $row; } if (!in_array($this->options['extras']['prefix'] . 'cache_data', $db)) { $query = $this->mysql->exec('CREATE TABLE `' . $this->options['extras']['prefix'] . 'cache_data` (`id` TEXT CHARACTER SET utf8 NOT NULL, `items` SMALLINT NOT NULL DEFAULT 0, `data` BLOB NOT NULL, `mtime` INT UNSIGNED NOT NULL, UNIQUE (`id`(125)))'); if ($query === false) { trigger_error("Can't create " . $this->options['extras']['prefix'] . "cache_data table, check permissions", \E_USER_WARNING); $this->mysql = null; return; } } if (!in_array($this->options['extras']['prefix'] . 'items', $db)) { $query = $this->mysql->exec('CREATE TABLE `' . $this->options['extras']['prefix'] . 'items` (`feed_id` TEXT CHARACTER SET utf8 NOT NULL, `id` TEXT CHARACTER SET utf8 NOT NULL, `data` MEDIUMBLOB NOT NULL, `posted` INT UNSIGNED NOT NULL, INDEX `feed_id` (`feed_id`(125)))'); if ($query === false) { trigger_error("Can't create " . $this->options['extras']['prefix'] . "items table, check permissions", \E_USER_WARNING); $this->mysql = null; return; } } } /** * Save data to the cache * * @param array<string>|\SimplePie\SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property * @return bool Successfulness */ public function save($data) { if ($this->mysql === null) { return false; } $query = $this->mysql->prepare('DELETE i, cd FROM `' . $this->options['extras']['prefix'] . 'cache_data` cd, ' . '`' . $this->options['extras']['prefix'] . 'items` i ' . 'WHERE cd.id = i.feed_id ' . 'AND cd.mtime < (unix_timestamp() - :purge_time)'); $query->bindValue(':purge_time', $this->options['extras']['cache_purge_time']); if (!$query->execute()) { return false; } if ($data instanceof \SimplePie\SimplePie) { $data = clone $data; $prepared = self::prepare_simplepie_object_for_cache($data); $query = $this->mysql->prepare('SELECT COUNT(*) FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :feed'); $query->bindValue(':feed', $this->id); if ($query->execute()) { if ($query->fetchColumn() > 0) { $items = count($prepared[1]); if ($items) { $sql = 'UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `items` = :items, `data` = :data, `mtime` = :time WHERE `id` = :feed'; $query = $this->mysql->prepare($sql); $query->bindValue(':items', $items); } else { $sql = 'UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `data` = :data, `mtime` = :time WHERE `id` = :feed'; $query = $this->mysql->prepare($sql); } $query->bindValue(':data', $prepared[0]); $query->bindValue(':time', time()); $query->bindValue(':feed', $this->id); if (!$query->execute()) { return false; } } else { $query = $this->mysql->prepare('INSERT INTO `' . $this->options['extras']['prefix'] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(:feed, :count, :data, :time)'); $query->bindValue(':feed', $this->id); $query->bindValue(':count', count($prepared[1])); $query->bindValue(':data', $prepared[0]); $query->bindValue(':time', time()); if (!$query->execute()) { return false; } } $ids = array_keys($prepared[1]); if (!empty($ids)) { foreach ($ids as $id) { $database_ids[] = $this->mysql->quote($id); } $query = $this->mysql->prepare('SELECT `id` FROM `' . $this->options['extras']['prefix'] . 'items` WHERE `id` = ' . implode(' OR `id` = ', $database_ids) . ' AND `feed_id` = :feed'); $query->bindValue(':feed', $this->id); if ($query->execute()) { $existing_ids = []; while ($row = $query->fetchColumn()) { $existing_ids[] = $row; } $new_ids = array_diff($ids, $existing_ids); foreach ($new_ids as $new_id) { if (!($date = $prepared[1][$new_id]->get_date('U'))) { $date = time(); } $query = $this->mysql->prepare('INSERT INTO `' . $this->options['extras']['prefix'] . 'items` (`feed_id`, `id`, `data`, `posted`) VALUES(:feed, :id, :data, :date)'); $query->bindValue(':feed', $this->id); $query->bindValue(':id', $new_id); $query->bindValue(':data', serialize($prepared[1][$new_id]->data)); $query->bindValue(':date', $date); if (!$query->execute()) { return false; } } return true; } } else { return true; } } } else { $query = $this->mysql->prepare('SELECT `id` FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :feed'); $query->bindValue(':feed', $this->id); if ($query->execute()) { if ($query->rowCount() > 0) { $query = $this->mysql->prepare('UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `items` = 0, `data` = :data, `mtime` = :time WHERE `id` = :feed'); $query->bindValue(':data', serialize($data)); $query->bindValue(':time', time()); $query->bindValue(':feed', $this->id); if ($query->execute()) { return true; } } else { $query = $this->mysql->prepare('INSERT INTO `' . $this->options['extras']['prefix'] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(:id, 0, :data, :time)'); $query->bindValue(':id', $this->id); $query->bindValue(':data', serialize($data)); $query->bindValue(':time', time()); if ($query->execute()) { return true; } } } } return false; } /** * Retrieve the data saved to the cache * * @return array<string>|false Data for SimplePie::$data */ public function load() { if ($this->mysql === null) { return false; } $query = $this->mysql->prepare('SELECT `items`, `data` FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :id'); $query->bindValue(':id', $this->id); if ($query->execute() && ($row = $query->fetch())) { $data = unserialize($row[1]); if (isset($this->options['items'][0])) { $items = (int) $this->options['items'][0]; } else { $items = (int) $row[0]; } if ($items !== 0) { if (isset($data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['feed'][0])) { $feed = &$data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['feed'][0]; } elseif (isset($data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['feed'][0])) { $feed = &$data['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['feed'][0]; } elseif (isset($data['child'][\SimplePie\SimplePie::NAMESPACE_RDF]['RDF'][0])) { $feed = &$data['child'][\SimplePie\SimplePie::NAMESPACE_RDF]['RDF'][0]; } elseif (isset($data['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['rss'][0])) { $feed = &$data['child'][\SimplePie\SimplePie::NAMESPACE_RSS_20]['rss'][0]; } else { $feed = null; } if ($feed !== null) { $sql = 'SELECT `data` FROM `' . $this->options['extras']['prefix'] . 'items` WHERE `feed_id` = :feed ORDER BY `posted` DESC'; if ($items > 0) { $sql .= ' LIMIT ' . $items; } $query = $this->mysql->prepare($sql); $query->bindValue(':feed', $this->id); if ($query->execute()) { while ($row = $query->fetchColumn()) { $feed['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['entry'][] = unserialize((string) $row); } } else { return false; } } } return $data; } return false; } /** * Retrieve the last modified time for the cache * * @return int|false Timestamp */ public function mtime() { if ($this->mysql === null) { return false; } $query = $this->mysql->prepare('SELECT `mtime` FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :id'); $query->bindValue(':id', $this->id); if ($query->execute() && ($time = $query->fetchColumn())) { return (int) $time; } return false; } /** * Set the last modified time to the current time * * @return bool Success status */ public function touch() { if ($this->mysql === null) { return false; } $query = $this->mysql->prepare('UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `mtime` = :time WHERE `id` = :id'); $query->bindValue(':time', time()); $query->bindValue(':id', $this->id); return $query->execute() && $query->rowCount() > 0; } /** * Remove the cache * * @return bool Success status */ public function unlink() { if ($this->mysql === null) { return false; } $query = $this->mysql->prepare('DELETE FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :id'); $query->bindValue(':id', $this->id); $query2 = $this->mysql->prepare('DELETE FROM `' . $this->options['extras']['prefix'] . 'items` WHERE `feed_id` = :id'); $query2->bindValue(':id', $this->id); return $query->execute() && $query2->execute(); } } class_alias('SimplePie\Cache\MySQL', 'SimplePie_Cache_MySQL');
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