Index: wp-admin/includes/misc.php =================================================================== --- wp-admin/includes/misc.php (revision 11177) +++ wp-admin/includes/misc.php (working copy) @@ -136,6 +136,33 @@ } /** + * Updates the IIS web.config file with the current rules if it is writable. + * If the permalinks do not require rewrite rules then the rules are deleted from the web.config file. + * + * + * @return bool True if web.config was updated successfully + */ +function iis7_save_url_rewrite_rules(){ + global $wp_rewrite; + + $home_path = get_home_path(); + $web_config_file = $home_path.'web.config'; + + // Using is__writable() instead of is_writable() because of a bug in Windows PHP + if ((!file_exists($web_config_file) && is__writable($home_path) && $wp_rewrite->using_mod_rewrite_permalinks()) || is__writable($web_config_file)) { + if ( iis7_supports_permalinks() ) { + $rule = $wp_rewrite -> iis7_url_rewrite_rules(); + if ( !empty($rule) ) // + return iis7_add_rewrite_rule($web_config_file, $rule); + else{ + return iis7_delete_rewrite_rule($web_config_file); + } + } + } + return false; +} + +/** * {@internal Missing Short Description}} * * @since unknown @@ -370,4 +397,203 @@ exit; } } -?> \ No newline at end of file + +// IIS 7 specific functions +/** + * Check if IIS 7 supports pretty permalinks + * + * + * @return bool + */ +function iis7_supports_permalinks(){ + global $is_iis7; + + $supports_permalinks = false; + if ($is_iis7){ + // First we check if the DOMDocument class exists. If it does not exist, + // which is the case for PHP 4.X, then we cannot easily update the xml configuration file, + // hence we just bail out and tell user that pretty permalinks cannot be used. + // This is not a big issue because PHP 4.X is going to be depricated and for IIS it + // is recommended to use PHP 5.X NTS. + // Next we check if the URL Rewrite Module 1.1 is loaded and enabled for the web site. When + // URL Rewrite 1.1 is loaded it always sets a server variable called 'IIS_UrlRewriteModule'. + // Lastly we make sure that PHP is running via FastCGI. This is important because if it runs + // via ISAPI then pretty permalinks will not work. + $supports_permalinks = class_exists('DOMDocument') && isset($_SERVER['IIS_UrlRewriteModule']) && (php_sapi_name() == 'cgi-fcgi'); + } + + return apply_filters('iis7_supports_permalinks', $supports_permalinks); +} + +/** + * Check if rewrite rule for WordPress already exists in the IIS 7 configuration file + * + * + * @return bool + * @param string $filename The file path to the configuration file + */ +function iis7_rewrite_rule_exists($filename) +{ + if (!file_exists($filename)) return false; + if (!class_exists('DOMDocument')) return false; + + $doc = new DOMDocument(); + if ($doc -> load($filename) === false) return false; + $xpath = new DOMXPath($doc); + $rules = $xpath -> query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']'); + if ($rules -> length == 0) + return false; + else + return true; +} + +/** + * Delete WordPress rewrite rule from web.config file if it exists there + * @return + * @param string $filename Name of the configuration file + */ +function iis7_delete_rewrite_rule($filename) +{ + // If configuration file does not exist then rules also do not exist so there is nothing to delete + if (!file_exists($filename)) return true; + + if (!class_exists('DOMDocument')) return false; + + $doc = new DOMDocument(); + $doc -> preserveWhiteSpace = false; + + if ($doc -> load($filename) === false) return false; + $xpath = new DOMXPath($doc); + $rules = $xpath -> query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']'); + if ($rules -> length > 0) { + $child = $rules -> item(0); + $parent = $child -> parentNode; + $parent -> removeChild($child); + $doc -> formatOutput = true; + saveDomDocument($doc, $filename); + } + return true; +} + +/** + * Add WordPress rewrite rule to the IIS 7 configuration file. + * + * + * @return bool + * @param string $filename The file path to the configuration file + * @param string $rewrite_rule The XML fragment with URL Rewrite rule + */ +function iis7_add_rewrite_rule($filename, $rewrite_rule) +{ + if (!class_exists('DOMDocument')) return false; + + // If configuration file does not exist then we create one. + if (!file_exists($filename)) { + $fp = fopen( $filename, 'w'); + fwrite($fp, ''); + fclose($fp); + } + + $doc = new DOMDocument(); + $doc -> preserveWhiteSpace = false; + + if ($doc -> load($filename) === false) return false; + + $xpath = new DOMXPath($doc); + + // First check if the rule already exists as in that case there is no need to re-add it + $wordpress_rules = $xpath -> query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']'); + if ($wordpress_rules -> length > 0) return true; + + // Check the XPath to the rewrite rule and create XML nodes if they do not exist + $xmlnodes = $xpath -> query('/configuration/system.webServer/rewrite/rules'); + if ($xmlnodes -> length > 0){ + $rules_node = $xmlnodes -> item(0); + } + else{ + $rules_node = $doc -> createElement('rules'); + + $xmlnodes = $xpath -> query('/configuration/system.webServer/rewrite'); + if ($xmlnodes -> length > 0){ + $rewrite_node = $xmlnodes -> item(0); + $rewrite_node -> appendChild($rules_node); + } + else{ + $rewrite_node = $doc -> createElement('rewrite'); + $rewrite_node -> appendChild($rules_node); + + $xmlnodes = $xpath -> query('/configuration/system.webServer'); + if ($xmlnodes -> length > 0){ + $system_webServer_node = $xmlnodes -> item(0); + $system_webServer_node -> appendChild($rewrite_node); + } + else{ + $system_webServer_node = $doc -> createElement('system.webServer'); + $system_webServer_node -> appendChild($rewrite_node); + + $xmlnodes = $xpath -> query('/configuration'); + if ($xmlnodes -> length > 0){ + $config_node = $xmlnodes -> item(0); + $config_node -> appendChild($system_webServer_node); + } + else{ + $config_node = $doc -> createElement('configuration'); + $doc -> appendChild($config_node); + $config_node -> appendChild($system_webServer_node); + } + } + } + } + + $rule_fragment = $doc -> createDocumentFragment(); + $rule_fragment -> appendXML($rewrite_rule); + $rules_node -> appendChild($rule_fragment); + + $doc -> formatOutput = true; + saveDomDocument($doc, $filename); + + return true; +} + +/** + * Saves the XML document into a file + * + * @param DOMDocument $doc + * @param string $filename + */ +function saveDomDocument($doc, $filename) +{ + $config = $doc -> saveXML(); + $config = preg_replace("/([^\r])\n/", "$1\r\n", $config); + $fp = fopen($filename, 'w'); + fwrite($fp, $config); + fclose($fp); +} + +/** + * Workaround for Windows bug in is_writable() function + * + * @return + * @param object $path + */ +function is__writable($path) { +//will work in despite of Windows ACLs bug +//NOTE: use a trailing slash for folders!!! +//see http://bugs.php.net/bug.php?id=27609 +//see http://bugs.php.net/bug.php?id=30931 + + if ($path{strlen($path)-1}=='/') // recursively return a temporary file path + return is__writable($path.uniqid(mt_rand()).'.tmp'); + else if (is_dir($path)) + return is__writable($path.'/'.uniqid(mt_rand()).'.tmp'); + // check tmp file for read/write capabilities + $rm = file_exists($path); + $f = @fopen($path, 'a'); + if ($f===false) + return false; + fclose($f); + if (!$rm) + unlink($path); + return true; +} +?> Index: wp-admin/options-permalink.php =================================================================== --- wp-admin/options-permalink.php (revision 11177) +++ wp-admin/options-permalink.php (working copy) @@ -70,6 +70,7 @@ include('admin-header.php'); $home_path = get_home_path(); +$iis7_permalinks = iis7_supports_permalinks(); if ( isset($_POST['permalink_structure']) || isset($_POST['category_base']) ) { check_admin_referer('update-permalink'); @@ -100,10 +101,18 @@ $category_base = get_option('category_base'); $tag_base = get_option( 'tag_base' ); -if ( (!file_exists($home_path.'.htaccess') && is_writable($home_path)) || is_writable($home_path.'.htaccess') ) - $writable = true; -else - $writable = false; +if ($iis7_permalinks){ + if ((!file_exists($home_path.'web.config') && is__writable($home_path)) || is__writable($home_path.'web.config') ) + $writable = true; + else + $writable = false; +} +else{ + if ( (!file_exists($home_path.'.htaccess') && is_writable($home_path)) || is_writable($home_path.'.htaccess') ) + $writable = true; + else + $writable = false; +} if ($wp_rewrite->using_index_permalinks()) $usingpi = true; @@ -115,10 +124,20 @@

@@ -134,7 +153,7 @@

- +

URLs here. For example, using topics as your category base would make your category links like http://example.org/topics/uncategorized/. If you leave these blank the defaults will be used.') ?>

URLs here. For example, using topics as your category base would make your category links like http://example.org/index.php/topics/uncategorized/. If you leave these blank the defaults will be used.') ?>

@@ -203,14 +222,25 @@

- -

.htaccess file were writable, we could do this automatically, but it isn’t so these are the mod_rewrite rules you should have in your .htaccess file. Click in the field and press CTRL + a to select all.') ?>

+ +

web.config file were writable, we could do this automatically, but it isn’t so this is the url rewrite rule you should have in your web.config file. Click in the field and press CTRL + a to select all. Then insert this rule inside of the /<configuration>/<system.webServer>/<rewrite>/<rules> element in web.config file.') ?>

+

+
+

web.config file writable for us to generate rewrite rules automatically, do not forget to revert the permissions after rule has been saved.') ?>

+ + +

.htaccess file were writable, we could do this automatically, but it isn’t so these are the mod_rewrite rules you should have in your .htaccess file. Click in the field and press CTRL + a to select all.') ?>

+
+

+ - + \ No newline at end of file Index: wp-includes/rewrite.php =================================================================== --- wp-includes/rewrite.php (revision 11177) +++ wp-includes/rewrite.php (working copy) @@ -1695,6 +1695,35 @@ return $rules; } + + /** + * Retrieve IIS7 URL Rewrite formatted rewrite rules to write to web.config file. + * + * Does not actually write to the web.config file, but creates the rules for + * the process that will. + * + * @access public + * + * @return string + */ + function iis7_url_rewrite_rules(){ + + if ( ! $this->using_permalinks()) { + return ''; + } + $rules = "\n"; + $rules .= " \n"; + $rules .= " \n"; + $rules .= " \n"; + $rules .= " \n"; + $rules .= " \n"; + $rules .= " \n"; + $rules .= ""; + + $rules = apply_filters('iis7_url_rewrite_rules', $rules); + + return $rules; + } /** * Add a straight rewrite rule. @@ -1790,6 +1819,8 @@ $this->wp_rewrite_rules(); if ( function_exists('save_mod_rewrite_rules') ) save_mod_rewrite_rules(); + if ( function_exists('iis7_save_url_rewrite_rules')) + iis7_save_url_rewrite_rules(); } /** Index: wp-includes/vars.php =================================================================== --- wp-includes/vars.php (revision 11177) +++ wp-includes/vars.php (working copy) @@ -67,7 +67,14 @@ */ $is_apache = ((strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false) || (strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false)) ? true : false; + /** + * Whether the server software is IIS 7.X + * @global bool $is_IIS7 + */ +$is_iis7 = (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7.') !== false) ? true : false; + +/** * Whether the server software is IIS or something else * @global bool $is_IIS */