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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