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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/js/set-post-thumbnail-handler.js', |
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59 'wp-admin/js/set-post-thumbnail-handler.dev.js', |
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60 'wp-admin/js/page.js', |
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61 'wp-admin/js/page.dev.js', |
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62 'wp-admin/js/slug.js', |
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63 'wp-admin/js/slug.dev.js', |
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64 'wp-admin/profile-update.php', |
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65 'wp-admin/templates.php', |
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66 'wp-includes/images/audio.png', |
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67 'wp-includes/images/css.png', |
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68 'wp-includes/images/default.png', |
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69 'wp-includes/images/doc.png', |
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70 'wp-includes/images/exe.png', |
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71 'wp-includes/images/html.png', |
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72 'wp-includes/images/js.png', |
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73 'wp-includes/images/pdf.png', |
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74 'wp-includes/images/swf.png', |
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75 'wp-includes/images/tar.png', |
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76 'wp-includes/images/text.png', |
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77 'wp-includes/images/video.png', |
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78 'wp-includes/images/zip.png', |
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79 'wp-includes/js/dbx.js', |
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80 'wp-includes/js/fat.js', |
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81 'wp-includes/js/list-manipulation.js', |
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82 'wp-includes/js/jquery/jquery.dimensions.min.js', |
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83 'wp-includes/js/tinymce/langs/en.js', |
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84 'wp-includes/js/tinymce/plugins/autosave/editor_plugin_src.js', |
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85 'wp-includes/js/tinymce/plugins/autosave/langs', |
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86 'wp-includes/js/tinymce/plugins/directionality/images', |
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87 'wp-includes/js/tinymce/plugins/directionality/langs', |
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88 'wp-includes/js/tinymce/plugins/inlinepopups/css', |
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89 'wp-includes/js/tinymce/plugins/inlinepopups/images', |
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90 'wp-includes/js/tinymce/plugins/inlinepopups/jscripts', |
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91 'wp-includes/js/tinymce/plugins/paste/images', |
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92 'wp-includes/js/tinymce/plugins/paste/jscripts', |
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93 'wp-includes/js/tinymce/plugins/paste/langs', |
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94 'wp-includes/js/tinymce/plugins/spellchecker/classes/HttpClient.class.php', |
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95 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyGoogleSpell.class.php', |
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96 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspell.class.php', |
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97 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspellShell.class.php', |
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98 'wp-includes/js/tinymce/plugins/spellchecker/css/spellchecker.css', |
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99 'wp-includes/js/tinymce/plugins/spellchecker/images', |
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100 'wp-includes/js/tinymce/plugins/spellchecker/langs', |
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101 'wp-includes/js/tinymce/plugins/spellchecker/tinyspell.php', |
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102 'wp-includes/js/tinymce/plugins/wordpress/images', |
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103 'wp-includes/js/tinymce/plugins/wordpress/langs', |
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104 'wp-includes/js/tinymce/plugins/wordpress/popups.css', |
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105 'wp-includes/js/tinymce/plugins/wordpress/wordpress.css', |
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106 'wp-includes/js/tinymce/plugins/wphelp', |
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107 'wp-includes/js/tinymce/themes/advanced/css', |
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108 'wp-includes/js/tinymce/themes/advanced/images', |
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109 'wp-includes/js/tinymce/themes/advanced/jscripts', |
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110 'wp-includes/js/tinymce/themes/advanced/langs', |
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111 'wp-includes/js/tinymce/tiny_mce_gzip.php', |
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112 'wp-includes/js/wp-ajax.js', |
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113 'wp-admin/admin-db.php', |
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114 'wp-admin/cat.js', |
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115 'wp-admin/categories.js', |
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116 'wp-admin/custom-fields.js', |
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117 'wp-admin/dbx-admin-key.js', |
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118 'wp-admin/edit-comments.js', |
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119 'wp-admin/install-rtl.css', |
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120 'wp-admin/install.css', |
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121 'wp-admin/upgrade-schema.php', |
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122 'wp-admin/upload-functions.php', |
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123 'wp-admin/upload-rtl.css', |
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124 'wp-admin/upload.css', |
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125 'wp-admin/upload.js', |
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126 'wp-admin/users.js', |
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127 'wp-admin/widgets-rtl.css', |
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128 'wp-admin/widgets.css', |
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129 'wp-admin/xfn.js', |
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130 'wp-includes/js/tinymce/license.html', |
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131 'wp-admin/cat-js.php', |
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132 'wp-admin/edit-form-ajax-cat.php', |
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133 'wp-admin/execute-pings.php', |
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134 'wp-admin/import/b2.php', |
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135 'wp-admin/import/btt.php', |
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136 'wp-admin/import/jkw.php', |
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137 'wp-admin/inline-uploading.php', |
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138 'wp-admin/link-categories.php', |
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139 'wp-admin/list-manipulation.js', |
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140 'wp-admin/list-manipulation.php', |
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141 'wp-includes/comment-functions.php', |
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142 'wp-includes/feed-functions.php', |
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143 'wp-includes/functions-compat.php', |
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144 'wp-includes/functions-formatting.php', |
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145 'wp-includes/functions-post.php', |
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146 'wp-includes/js/dbx-key.js', |
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147 'wp-includes/js/tinymce/plugins/autosave/langs/cs.js', |
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148 'wp-includes/js/tinymce/plugins/autosave/langs/sv.js', |
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149 'wp-includes/js/tinymce/themes/advanced/editor_template_src.js', |
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150 'wp-includes/links.php', |
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151 'wp-includes/pluggable-functions.php', |
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152 'wp-includes/template-functions-author.php', |
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153 'wp-includes/template-functions-category.php', |
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154 'wp-includes/template-functions-general.php', |
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155 'wp-includes/template-functions-links.php', |
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156 'wp-includes/template-functions-post.php', |
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157 'wp-includes/wp-l10n.php', |
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158 'wp-admin/import-b2.php', |
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159 'wp-admin/import-blogger.php', |
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160 'wp-admin/import-greymatter.php', |
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161 'wp-admin/import-livejournal.php', |
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162 'wp-admin/import-mt.php', |
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163 'wp-admin/import-rss.php', |
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164 'wp-admin/import-textpattern.php', |
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165 'wp-admin/quicktags.js', |
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166 'wp-images/fade-butt.png', |
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167 'wp-images/get-firefox.png', |
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168 'wp-images/header-shadow.png', |
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169 'wp-images/smilies', |
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170 'wp-images/wp-small.png', |
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171 'wp-images/wpminilogo.png', |
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172 'wp.php', |
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173 'wp-includes/gettext.php', |
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174 'wp-includes/streams.php' |
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175 ); |
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176 |
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177 /** |
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178 * Upgrade the core of WordPress. |
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179 * |
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180 * This will create a .maintenance file at the base of the WordPress directory |
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181 * to ensure that people can not access the web site, when the files are being |
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182 * copied to their locations. |
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183 * |
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184 * The files in the {@link $_old_files} list will be removed and the new files |
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185 * copied from the zip file after the database is upgraded. |
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186 * |
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187 * The steps for the upgrader for after the new release is downloaded and |
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188 * unzipped is: |
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189 * 1. Test unzipped location for select files to ensure that unzipped worked. |
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190 * 2. Create the .maintenance file in current WordPress base. |
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191 * 3. Copy new WordPress directory over old WordPress files. |
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192 * 4. Upgrade WordPress to new version. |
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193 * 5. Delete new WordPress directory path. |
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194 * 6. Delete .maintenance file. |
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195 * 7. Remove old files. |
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196 * 8. Delete 'update_core' option. |
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197 * |
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198 * There are several areas of failure. For instance if PHP times out before step |
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199 * 6, then you will not be able to access any portion of your site. Also, since |
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200 * the upgrade will not continue where it left off, you will not be able to |
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201 * automatically remove old files and remove the 'update_core' option. This |
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202 * isn't that bad. |
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203 * |
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204 * If the copy of the new WordPress over the old fails, then the worse is that |
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205 * the new WordPress directory will remain. |
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206 * |
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207 * If it is assumed that every file will be copied over, including plugins and |
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208 * themes, then if you edit the default theme, you should rename it, so that |
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209 * your changes remain. |
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210 * |
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211 * @since 2.7.0 |
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212 * |
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213 * @param string $from New release unzipped path. |
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214 * @param string $to Path to old WordPress installation. |
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215 * @return WP_Error|null WP_Error on failure, null on success. |
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216 */ |
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217 function update_core($from, $to) { |
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218 global $wp_filesystem, $_old_files, $wpdb; |
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219 |
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220 @set_time_limit( 300 ); |
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221 |
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222 $php_version = phpversion(); |
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223 $mysql_version = $wpdb->db_version(); |
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224 $required_php_version = '4.3'; |
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225 $required_mysql_version = '4.1.2'; |
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226 $wp_version = '2.9.2'; |
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227 $php_compat = version_compare( $php_version, $required_php_version, '>=' ); |
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228 $mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' ) || file_exists( WP_CONTENT_DIR . '/db.php' ); |
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229 |
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230 if ( !$mysql_compat || !$php_compat ) |
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231 $wp_filesystem->delete($from, true); |
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232 |
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233 if ( !$mysql_compat && !$php_compat ) |
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234 return new WP_Error( 'php_mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.'), $wp_version, $required_php_version, $required_mysql_version, $php_version, $mysql_version ) ); |
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235 elseif ( !$php_compat ) |
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236 return new WP_Error( 'php_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.'), $wp_version, $required_php_version, $php_version ) ); |
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237 elseif ( !$mysql_compat ) |
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238 return new WP_Error( 'mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.'), $wp_version, $required_mysql_version, $mysql_version ) ); |
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239 |
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240 // Sanity check the unzipped distribution |
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241 apply_filters('update_feedback', __('Verifying the unpacked files')); |
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242 if ( !$wp_filesystem->exists($from . '/wordpress/wp-settings.php') || !$wp_filesystem->exists($from . '/wordpress/wp-admin/admin.php') || |
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243 !$wp_filesystem->exists($from . '/wordpress/wp-includes/functions.php') ) { |
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244 $wp_filesystem->delete($from, true); |
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245 return new WP_Error('insane_distro', __('The update could not be unpacked') ); |
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246 } |
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247 |
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248 apply_filters('update_feedback', __('Installing the latest version')); |
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249 |
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250 // Create maintenance file to signal that we are upgrading |
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251 $maintenance_string = '<?php $upgrading = ' . time() . '; ?>'; |
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252 $maintenance_file = $to . '.maintenance'; |
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253 $wp_filesystem->delete($maintenance_file); |
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254 $wp_filesystem->put_contents($maintenance_file, $maintenance_string, FS_CHMOD_FILE); |
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255 |
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256 // Copy new versions of WP files into place. |
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257 $result = copy_dir($from . '/wordpress', $to); |
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258 if ( is_wp_error($result) ) { |
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259 $wp_filesystem->delete($maintenance_file); |
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260 $wp_filesystem->delete($from, true); |
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261 return $result; |
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262 } |
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263 |
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264 // Remove old files |
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265 foreach ( $_old_files as $old_file ) { |
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266 $old_file = $to . $old_file; |
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267 if ( !$wp_filesystem->exists($old_file) ) |
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268 continue; |
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269 $wp_filesystem->delete($old_file, true); |
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270 } |
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271 |
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272 // Upgrade DB with separate request |
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273 apply_filters('update_feedback', __('Upgrading database')); |
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274 $db_upgrade_url = admin_url('upgrade.php?step=upgrade_db'); |
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275 wp_remote_post($db_upgrade_url, array('timeout' => 60)); |
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276 |
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277 // Remove working directory |
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278 $wp_filesystem->delete($from, true); |
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279 |
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280 // Force refresh of update information |
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281 if ( function_exists('delete_transient') ) |
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282 delete_transient('update_core'); |
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283 else |
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284 delete_option('update_core'); |
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285 |
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286 // Remove maintenance file, we're done. |
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287 $wp_filesystem->delete($maintenance_file); |
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288 } |
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289 |
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290 ?> |