1 <?php

     2 

     3 /**

     4  * SimplePie

     5  *

     6  * A PHP-Based RSS and Atom Feed Framework.

     7  * Takes the hard work out of managing a complete RSS/Atom solution.

     8  *

     9  * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors

    10  * All rights reserved.

    11  *

    12  * Redistribution and use in source and binary forms, with or without modification, are

    13  * permitted provided that the following conditions are met:

    14  *

    15  * 	* Redistributions of source code must retain the above copyright notice, this list of

    16  * 	  conditions and the following disclaimer.

    17  *

    18  * 	* Redistributions in binary form must reproduce the above copyright notice, this list

    19  * 	  of conditions and the following disclaimer in the documentation and/or other materials

    20  * 	  provided with the distribution.

    21  *

    22  * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used

    23  * 	  to endorse or promote products derived from this software without specific prior

    24  * 	  written permission.

    25  *

    26  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS

    27  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

    28  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS

    29  * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

    31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

    33  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    34  * POSSIBILITY OF SUCH DAMAGE.

    35  *

    36  * @package SimplePie

    37  * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue

    38  * @author Ryan Parman

    39  * @author Sam Sneddon

    40  * @author Ryan McCue

    41  * @link http://simplepie.org/ SimplePie

    42  * @license http://www.opensource.org/licenses/bsd-license.php BSD License

    43  */

    44 

    45 namespace SimplePie\Cache;

    46 

    47 use Memcache as NativeMemcache;

    48 

    49 /**

    50  * Caches data to memcache

    51  *

    52  * Registered for URLs with the "memcache" protocol

    53  *

    54  * For example, `memcache://localhost:11211/?timeout=3600&prefix=sp_` will

    55  * connect to memcache on `localhost` on port 11211. All tables will be

    56  * prefixed with `sp_` and data will expire after 3600 seconds

    57  *

    58  * @package SimplePie

    59  * @subpackage Caching

    60  * @uses Memcache

    61  * @deprecated since SimplePie 1.8.0, use implementation of "Psr\SimpleCache\CacheInterface" instead

    62  */

    63 class Memcache implements Base

    64 {

    65     /**

    66      * Memcache instance

    67      *

    68      * @var Memcache

    69      */

    70     protected $cache;

    71 

    72     /**

    73      * Options

    74      *

    75      * @var array

    76      */

    77     protected $options;

    78 

    79     /**

    80      * Cache name

    81      *

    82      * @var string

    83      */

    84     protected $name;

    85 

    86     /**

    87      * Create a new cache object

    88      *

    89      * @param string $location Location string (from SimplePie::$cache_location)

    90      * @param string $name Unique ID for the cache

    91      * @param Base::TYPE_FEED|Base::TYPE_IMAGE $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data

    92      */

    93     public function __construct($location, $name, $type)

    94     {

    95         $this->options = [

    96             'host' => '127.0.0.1',

    97             'port' => 11211,

    98             'extras' => [

    99                 'timeout' => 3600, // one hour

   100                 'prefix' => 'simplepie_',

   101             ],

   102         ];

   103         $this->options = array_replace_recursive($this->options, \SimplePie\Cache::parse_URL($location));

   104 

   105         $this->name = $this->options['extras']['prefix'] . md5("$name:$type");

   106 

   107         $this->cache = new NativeMemcache();

   108         $this->cache->addServer($this->options['host'], (int) $this->options['port']);

   109     }

   110 

   111     /**

   112      * Save data to the cache

   113      *

   114      * @param array|\SimplePie\SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property

   115      * @return bool Successfulness

   116      */

   117     public function save($data)

   118     {

   119         if ($data instanceof \SimplePie\SimplePie) {

   120             $data = $data->data;

   121         }

   122         return $this->cache->set($this->name, serialize($data), MEMCACHE_COMPRESSED, (int) $this->options['extras']['timeout']);

   123     }

   124 

   125     /**

   126      * Retrieve the data saved to the cache

   127      *

   128      * @return array Data for SimplePie::$data

   129      */

   130     public function load()

   131     {

   132         $data = $this->cache->get($this->name);

   133 

   134         if ($data !== false) {

   135             return unserialize($data);

   136         }

   137         return false;

   138     }

   139 

   140     /**

   141      * Retrieve the last modified time for the cache

   142      *

   143      * @return int Timestamp

   144      */

   145     public function mtime()

   146     {

   147         $data = $this->cache->get($this->name);

   148 

   149         if ($data !== false) {

   150             // essentially ignore the mtime because Memcache expires on its own

   151             return time();

   152         }

   153 

   154         return false;

   155     }

   156 

   157     /**

   158      * Set the last modified time to the current time

   159      *

   160      * @return bool Success status

   161      */

   162     public function touch()

   163     {

   164         $data = $this->cache->get($this->name);

   165 

   166         if ($data !== false) {

   167             return $this->cache->set($this->name, $data, MEMCACHE_COMPRESSED, (int) $this->options['extras']['timeout']);

   168         }

   169 

   170         return false;

   171     }

   172 

   173     /**

   174      * Remove the cache

   175      *

   176      * @return bool Success status

   177      */

   178     public function unlink()

   179     {

   180         return $this->cache->delete($this->name, 0);

   181     }

   182 }

   183 

   184 class_alias('SimplePie\Cache\Memcache', 'SimplePie_Cache_Memcache');