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1 <?php
2 /**
3  * Upgrader API: WP_Upgrader_Skin class
4  *
5  * @package WordPress
6  * @subpackage Upgrader
7  * @since 4.6.0
8  */
9
10 /**
11  * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes.
12  *
13  * @since 2.8.0
14  * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.
15  */
16 class WP_Upgrader_Skin {
17
18         public $upgrader;
19         public $done_header = false;
20         public $done_footer = false;
21
22         /**
23          * Holds the result of an upgrade.
24          *
25          * @since 2.8.0
26          * @access public
27          * @var string|bool|WP_Error
28          */
29         public $result = false;
30         public $options = array();
31
32         /**
33          *
34          * @param array $args
35          */
36         public function __construct($args = array()) {
37                 $defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false );
38                 $this->options = wp_parse_args($args, $defaults);
39         }
40
41         /**
42          * @param WP_Upgrader $upgrader
43          */
44         public function set_upgrader(&$upgrader) {
45                 if ( is_object($upgrader) )
46                         $this->upgrader =& $upgrader;
47                 $this->add_strings();
48         }
49
50         /**
51          * @access public
52          */
53         public function add_strings() {
54         }
55
56         /**
57          * Sets the result of an upgrade.
58          *
59          * @since 2.8.0
60          * @access public
61          *
62          * @param string|bool|WP_Error $result The result of an upgrade.
63          */
64         public function set_result( $result ) {
65                 $this->result = $result;
66         }
67
68         /**
69          * Displays a form to the user to request for their FTP/SSH details in order
70          * to connect to the filesystem.
71          *
72          * @since 2.8.0
73          * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.
74          *
75          * @see request_filesystem_credentials()
76          *
77          * @param bool   $error                        Optional. Whether the current request has failed to connect.
78          *                                             Default false.
79          * @param string $context                      Optional. Full path to the directory that is tested
80          *                                             for being writable. Default empty.
81          * @param bool   $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. Default false.
82          * @return bool False on failure, true on success.
83          */
84         public function request_filesystem_credentials( $error = false, $context = '', $allow_relaxed_file_ownership = false ) {
85                 $url = $this->options['url'];
86                 if ( ! $context ) {
87                         $context = $this->options['context'];
88                 }
89                 if ( !empty($this->options['nonce']) ) {
90                         $url = wp_nonce_url($url, $this->options['nonce']);
91                 }
92
93                 $extra_fields = array();
94
95                 return request_filesystem_credentials( $url, '', $error, $context, $extra_fields, $allow_relaxed_file_ownership );
96         }
97
98         /**
99          * @access public
100          */
101         public function header() {
102                 if ( $this->done_header ) {
103                         return;
104                 }
105                 $this->done_header = true;
106                 echo '<div class="wrap">';
107                 echo '<h1>' . $this->options['title'] . '</h1>';
108         }
109
110         /**
111          * @access public
112          */
113         public function footer() {
114                 if ( $this->done_footer ) {
115                         return;
116                 }
117                 $this->done_footer = true;
118                 echo '</div>';
119         }
120
121         /**
122          *
123          * @param string|WP_Error $errors
124          */
125         public function error($errors) {
126                 if ( ! $this->done_header )
127                         $this->header();
128                 if ( is_string($errors) ) {
129                         $this->feedback($errors);
130                 } elseif ( is_wp_error($errors) && $errors->get_error_code() ) {
131                         foreach ( $errors->get_error_messages() as $message ) {
132                                 if ( $errors->get_error_data() && is_string( $errors->get_error_data() ) )
133                                         $this->feedback($message . ' ' . esc_html( strip_tags( $errors->get_error_data() ) ) );
134                                 else
135                                         $this->feedback($message);
136                         }
137                 }
138         }
139
140         /**
141          *
142          * @param string $string
143          */
144         public function feedback($string) {
145                 if ( isset( $this->upgrader->strings[$string] ) )
146                         $string = $this->upgrader->strings[$string];
147
148                 if ( strpos($string, '%') !== false ) {
149                         $args = func_get_args();
150                         $args = array_splice($args, 1);
151                         if ( $args ) {
152                                 $args = array_map( 'strip_tags', $args );
153                                 $args = array_map( 'esc_html', $args );
154                                 $string = vsprintf($string, $args);
155                         }
156                 }
157                 if ( empty($string) )
158                         return;
159                 show_message($string);
160         }
161
162         /**
163          * @access public
164          */
165         public function before() {}
166
167         /**
168          * @access public
169          */
170         public function after() {}
171
172         /**
173          * Output JavaScript that calls function to decrement the update counts.
174          *
175          * @since 3.9.0
176          *
177          * @param string $type Type of update count to decrement. Likely values include 'plugin',
178          *                     'theme', 'translation', etc.
179          */
180         protected function decrement_update_count( $type ) {
181                 if ( ! $this->result || is_wp_error( $this->result ) || 'up_to_date' === $this->result ) {
182                         return;
183                 }
184
185                 if ( defined( 'IFRAME_REQUEST' ) ) {
186                         echo '<script type="text/javascript">
187                                         if ( window.postMessage && JSON ) {
188                                                 window.parent.postMessage( JSON.stringify( { action: "decrementUpdateCount", upgradeType: "' . $type . '" } ), window.location.protocol + "//" + window.location.hostname );
189                                         }
190                                 </script>';
191                 } else {
192                         echo '<script type="text/javascript">
193                                         (function( wp ) {
194                                                 if ( wp && wp.updates.decrementCount ) {
195                                                         wp.updates.decrementCount( "' . $type . '" );
196                                                 }
197                                         })( window.wp );
198                                 </script>';
199                 }
200         }
201
202         /**
203          * @access public
204          */
205         public function bulk_header() {}
206
207         /**
208          * @access public
209          */
210         public function bulk_footer() {}
211 }