Wordpress 3.5.2
[autoinstalls/wordpress.git] / wp-includes / class-feed.php
1 <?php
2
3 if ( !class_exists('SimplePie') )
4         require_once (ABSPATH . WPINC . '/class-simplepie.php');
5
6 class WP_Feed_Cache extends SimplePie_Cache {
7         /**
8          * Create a new SimplePie_Cache object
9          *
10          * @static
11          * @access public
12          */
13         function create($location, $filename, $extension) {
14                 return new WP_Feed_Cache_Transient($location, $filename, $extension);
15         }
16 }
17
18 class WP_Feed_Cache_Transient {
19         var $name;
20         var $mod_name;
21         var $lifetime = 43200; //Default lifetime in cache of 12 hours
22
23         function __construct($location, $filename, $extension) {
24                 $this->name = 'feed_' . $filename;
25                 $this->mod_name = 'feed_mod_' . $filename;
26                 $this->lifetime = apply_filters('wp_feed_cache_transient_lifetime', $this->lifetime, $filename);
27         }
28
29         function save($data) {
30                 if ( is_a($data, 'SimplePie') )
31                         $data = $data->data;
32
33                 set_transient($this->name, $data, $this->lifetime);
34                 set_transient($this->mod_name, time(), $this->lifetime);
35                 return true;
36         }
37
38         function load() {
39                 return get_transient($this->name);
40         }
41
42         function mtime() {
43                 return get_transient($this->mod_name);
44         }
45
46         function touch() {
47                 return set_transient($this->mod_name, time(), $this->lifetime);
48         }
49
50         function unlink() {
51                 delete_transient($this->name);
52                 delete_transient($this->mod_name);
53                 return true;
54         }
55 }
56
57 class WP_SimplePie_File extends SimplePie_File {
58
59         function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false) {
60                 $this->url = $url;
61                 $this->timeout = $timeout;
62                 $this->redirects = $redirects;
63                 $this->headers = $headers;
64                 $this->useragent = $useragent;
65
66                 $this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;
67
68                 if ( preg_match('/^http(s)?:\/\//i', $url) ) {
69                         $args = array(
70                                 'timeout' => $this->timeout,
71                                 'redirection' => $this->redirects,
72                                 'reject_unsafe_urls' => true,
73                         );
74
75                         if ( !empty($this->headers) )
76                                 $args['headers'] = $this->headers;
77
78                         if ( SIMPLEPIE_USERAGENT != $this->useragent ) //Use default WP user agent unless custom has been specified
79                                 $args['user-agent'] = $this->useragent;
80
81                         $res = wp_remote_request($url, $args);
82
83                         if ( is_wp_error($res) ) {
84                                 $this->error = 'WP HTTP Error: ' . $res->get_error_message();
85                                 $this->success = false;
86                         } else {
87                                 $this->headers = wp_remote_retrieve_headers( $res );
88                                 $this->body = wp_remote_retrieve_body( $res );
89                                 $this->status_code = wp_remote_retrieve_response_code( $res );
90                         }
91                 } else {
92                         $this->error = '';
93                         $this->success = false;
94                 }
95         }
96 }
97
98 /**
99  * WordPress SimplePie Sanitization Class
100  *
101  * Extension of the SimplePie_Sanitize class to use KSES, because
102  * we cannot universally count on DOMDocument being available
103  *
104  * @package WordPress
105  * @since 3.5.0
106  */
107 class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize {
108         public function sanitize( $data, $type, $base = '' ) {
109                 $data = trim( $data );
110                 if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
111                         if (preg_match('/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data)) {
112                                 $type |= SIMPLEPIE_CONSTRUCT_HTML;
113                         }
114                         else {
115                                 $type |= SIMPLEPIE_CONSTRUCT_TEXT;
116                         }
117                 }
118                 if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {
119                         $data = base64_decode( $data );
120                 }
121                 if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {
122                         $data = wp_kses_post( $data );
123                         if ( $this->output_encoding !== 'UTF-8' ) {
124                                 $data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
125                         }
126                         return $data;
127                 } else {
128                         return parent::sanitize( $data, $type, $base );
129                 }
130         }
131 }