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