Wordpress 2.7.1
[autoinstalls/wordpress.git] / wp-admin / includes / update-core.php
1 <?php
2 /**
3  * WordPress core upgrade functionality.
4  *
5  * @package WordPress
6  * @subpackage Administration
7  * @since 2.7.0
8  */
9
10 /**
11  * Stores files to be deleted.
12  *
13  * @since 2.7.0
14  * @global array $_old_files
15  * @var array
16  * @name $_old_files
17  */
18 global $_old_files;
19
20 $_old_files = array(
21 'wp-admin/bookmarklet.php',
22 'wp-admin/css/upload.css',
23 'wp-admin/css/upload-rtl.css',
24 'wp-admin/css/press-this-ie.css',
25 'wp-admin/css/press-this-ie-rtl.css',
26 'wp-admin/edit-form.php',
27 'wp-admin/link-import.php',
28 'wp-admin/images/box-bg-left.gif',
29 'wp-admin/images/box-bg-right.gif',
30 'wp-admin/images/box-bg.gif',
31 'wp-admin/images/box-butt-left.gif',
32 'wp-admin/images/box-butt-right.gif',
33 'wp-admin/images/box-butt.gif',
34 'wp-admin/images/box-head-left.gif',
35 'wp-admin/images/box-head-right.gif',
36 'wp-admin/images/box-head.gif',
37 'wp-admin/images/heading-bg.gif',
38 'wp-admin/images/login-bkg-bottom.gif',
39 'wp-admin/images/login-bkg-tile.gif',
40 'wp-admin/images/notice.gif',
41 'wp-admin/images/toggle.gif',
42 'wp-admin/images/comment-stalk-classic.gif',
43 'wp-admin/images/comment-stalk-fresh.gif',
44 'wp-admin/images/comment-stalk-rtl.gif',
45 'wp-admin/images/comment-pill.gif',
46 'wp-admin/images/del.png',
47 'wp-admin/images/media-button-gallery.gif',
48 'wp-admin/images/media-buttons.gif',
49 'wp-admin/images/tail.gif',
50 'wp-admin/images/gear.png',
51 'wp-admin/images/tab.png',
52 'wp-admin/images/postbox-bg.gif',
53 'wp-admin/includes/upload.php',
54 'wp-admin/js/dbx-admin-key.js',
55 'wp-admin/js/link-cat.js',
56 'wp-admin/js/forms.js',
57 'wp-admin/js/upload.js',
58 'wp-admin/profile-update.php',
59 'wp-admin/templates.php',
60 'wp-includes/images/audio.png',
61 'wp-includes/images/css.png',
62 'wp-includes/images/default.png',
63 'wp-includes/images/doc.png',
64 'wp-includes/images/exe.png',
65 'wp-includes/images/html.png',
66 'wp-includes/images/js.png',
67 'wp-includes/images/pdf.png',
68 'wp-includes/images/swf.png',
69 'wp-includes/images/tar.png',
70 'wp-includes/images/text.png',
71 'wp-includes/images/video.png',
72 'wp-includes/images/zip.png',
73 'wp-includes/js/dbx.js',
74 'wp-includes/js/fat.js',
75 'wp-includes/js/list-manipulation.js',
76 'wp-includes/js/jquery/jquery.dimensions.min.js',
77 'wp-includes/js/tinymce/langs/en.js',
78 'wp-includes/js/tinymce/plugins/autosave/editor_plugin_src.js',
79 'wp-includes/js/tinymce/plugins/autosave/langs',
80 'wp-includes/js/tinymce/plugins/directionality/images',
81 'wp-includes/js/tinymce/plugins/directionality/langs',
82 'wp-includes/js/tinymce/plugins/inlinepopups/css',
83 'wp-includes/js/tinymce/plugins/inlinepopups/images',
84 'wp-includes/js/tinymce/plugins/inlinepopups/jscripts',
85 'wp-includes/js/tinymce/plugins/paste/images',
86 'wp-includes/js/tinymce/plugins/paste/jscripts',
87 'wp-includes/js/tinymce/plugins/paste/langs',
88 'wp-includes/js/tinymce/plugins/spellchecker/classes/HttpClient.class.php',
89 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyGoogleSpell.class.php',
90 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspell.class.php',
91 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspellShell.class.php',
92 'wp-includes/js/tinymce/plugins/spellchecker/css/spellchecker.css',
93 'wp-includes/js/tinymce/plugins/spellchecker/images',
94 'wp-includes/js/tinymce/plugins/spellchecker/langs',
95 'wp-includes/js/tinymce/plugins/spellchecker/tinyspell.php',
96 'wp-includes/js/tinymce/plugins/wordpress/images',
97 'wp-includes/js/tinymce/plugins/wordpress/langs',
98 'wp-includes/js/tinymce/plugins/wordpress/popups.css',
99 'wp-includes/js/tinymce/plugins/wordpress/wordpress.css',
100 'wp-includes/js/tinymce/plugins/wphelp',
101 'wp-includes/js/tinymce/themes/advanced/css',
102 'wp-includes/js/tinymce/themes/advanced/images',
103 'wp-includes/js/tinymce/themes/advanced/jscripts',
104 'wp-includes/js/tinymce/themes/advanced/langs',
105 'wp-includes/js/tinymce/tiny_mce_gzip.php',
106 'wp-includes/js/wp-ajax.js',
107 'wp-admin/admin-db.php',
108 'wp-admin/cat.js',
109 'wp-admin/categories.js',
110 'wp-admin/custom-fields.js',
111 'wp-admin/dbx-admin-key.js',
112 'wp-admin/edit-comments.js',
113 'wp-admin/install-rtl.css',
114 'wp-admin/install.css',
115 'wp-admin/upgrade-schema.php',
116 'wp-admin/upload-functions.php',
117 'wp-admin/upload-rtl.css',
118 'wp-admin/upload.css',
119 'wp-admin/upload.js',
120 'wp-admin/users.js',
121 'wp-admin/widgets-rtl.css',
122 'wp-admin/widgets.css',
123 'wp-admin/xfn.js',
124 'wp-includes/js/tinymce/license.html',
125 'wp-admin/cat-js.php',
126 'wp-admin/edit-form-ajax-cat.php',
127 'wp-admin/execute-pings.php',
128 'wp-admin/import/b2.php',
129 'wp-admin/inline-uploading.php',
130 'wp-admin/link-categories.php',
131 'wp-admin/list-manipulation.js',
132 'wp-admin/list-manipulation.php',
133 'wp-includes/comment-functions.php',
134 'wp-includes/feed-functions.php',
135 'wp-includes/functions-compat.php',
136 'wp-includes/functions-formatting.php',
137 'wp-includes/functions-post.php',
138 'wp-includes/js/dbx-key.js',
139 'wp-includes/js/tinymce/plugins/autosave/langs/cs.js',
140 'wp-includes/js/tinymce/plugins/autosave/langs/sv.js',
141 'wp-includes/js/tinymce/themes/advanced/editor_template_src.js',
142 'wp-includes/links.php',
143 'wp-includes/pluggable-functions.php',
144 'wp-includes/template-functions-author.php',
145 'wp-includes/template-functions-category.php',
146 'wp-includes/template-functions-general.php',
147 'wp-includes/template-functions-links.php',
148 'wp-includes/template-functions-post.php',
149 'wp-includes/wp-l10n.php',
150 'wp-admin/import-b2.php',
151 'wp-admin/import-blogger.php',
152 'wp-admin/import-greymatter.php',
153 'wp-admin/import-livejournal.php',
154 'wp-admin/import-mt.php',
155 'wp-admin/import-rss.php',
156 'wp-admin/import-textpattern.php',
157 'wp-admin/quicktags.js',
158 'wp-images/fade-butt.png',
159 'wp-images/get-firefox.png',
160 'wp-images/header-shadow.png',
161 'wp-images/smilies',
162 'wp-images/wp-small.png',
163 'wp-images/wpminilogo.png',
164 'wp.php',
165 'wp-content/themes/default/attachment.php',
166 'wp-content/themes/default/images/kubrickbg.jpg',
167 'wp-content/plugins/markdown.php',
168 'wp-content/plugins/textile1.php',
169 );
170
171 /**
172  * Upgrade the core of WordPress.
173  *
174  * This will create a .maintenance file at the base of the WordPress directory
175  * to ensure that people can not access the web site, when the files are being
176  * copied to their locations.
177  *
178  * The files in the {@link $_old_files} list will be removed and the new files
179  * copied from the zip file after the database is upgraded.
180  *
181  * The steps for the upgrader for after the new release is downloaded and
182  * unzipped is:
183  *   1. Test unzipped location for select files to ensure that unzipped worked.
184  *   2. Create the .maintenance file in current WordPress base.
185  *   3. Copy new WordPress directory over old WordPress files.
186  *   4. Upgrade WordPress to new version.
187  *   5. Delete new WordPress directory path.
188  *   6. Delete .maintenance file.
189  *   7. Remove old files.
190  *   8. Delete 'update_core' option.
191  *
192  * There are several areas of failure. For instance if PHP times out before step
193  * 6, then you will not be able to access any portion of your site. Also, since
194  * the upgrade will not continue where it left off, you will not be able to
195  * automatically remove old files and remove the 'update_core' option. This
196  * isn't that bad.
197  *
198  * If the copy of the new WordPress over the old fails, then the worse is that
199  * the new WordPress directory will remain.
200  *
201  * If it is assumed that every file will be copied over, including plugins and
202  * themes, then if you edit the default theme, you should rename it, so that
203  * your changes remain.
204  *
205  * @since 2.7.0
206  *
207  * @param string $from New release unzipped path.
208  * @param string $to Path to old WordPress installation.
209  * @return WP_Error|null WP_Error on failure, null on success.
210  */
211 function update_core($from, $to) {
212         global $wp_filesystem, $_old_files;
213
214         @set_time_limit( 300 );
215
216         // Sanity check the unzipped distribution
217         apply_filters('update_feedback', __('Verifying the unpacked files'));
218         if ( !$wp_filesystem->exists($from . '/wordpress/wp-settings.php') || !$wp_filesystem->exists($from . '/wordpress/wp-admin/admin.php') ||
219                 !$wp_filesystem->exists($from . '/wordpress/wp-includes/functions.php') ) {
220                 $wp_filesystem->delete($from, true);
221                 return new WP_Error('insane_distro', __('The update could not be unpacked') );
222         }
223
224         apply_filters('update_feedback', __('Installing the latest version'));
225
226         // Create maintenance file to signal that we are upgrading
227         $maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
228         $maintenance_file = $to . '.maintenance';
229         $wp_filesystem->delete($maintenance_file);
230         $wp_filesystem->put_contents($maintenance_file, $maintenance_string, FS_CHMOD_FILE);
231
232         // Copy new versions of WP files into place.
233         $result = copy_dir($from . '/wordpress', $to);
234         if ( is_wp_error($result) ) {
235                 $wp_filesystem->delete($maintenance_file);
236                 //$wp_filesystem->delete($working_dir, true); //TODO: Uncomment? This DOES mean that the new files are available in the upgrade folder if it fails.
237                 return $result;
238         }
239
240         // Remove old files
241         foreach ( $_old_files as $old_file ) {
242                 $old_file = $to . $old_file;
243                 if ( !$wp_filesystem->exists($old_file) )
244                         continue;
245                 $wp_filesystem->delete($old_file, true);
246         }
247
248         // Upgrade DB with separate request
249         apply_filters('update_feedback', __('Upgrading database'));
250         $db_upgrade_url = admin_url('upgrade.php?step=upgrade_db');
251         wp_remote_post($db_upgrade_url, array('timeout' => 60));
252
253         // Remove working directory
254         $wp_filesystem->delete($from, true);
255
256         // Force refresh of update information
257         delete_option('update_core');
258
259         // Remove maintenance file, we're done.
260         $wp_filesystem->delete($maintenance_file);
261 }
262
263 ?>