Suggest rewrite rules on IIS Network (Multisite)

[guy_fr]

Server: Microsoft IIS - 8
Wordpress: 3.5.1 (multisite)

On subfolder install, suggest for web.config is:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="WordPress Rule 1" stopProcessing="true">
                    <match url="^index\.php$" ignoreCase="false" />
                    <action type="None" />
                </rule>
                <rule name="WordPress Rule for Files" stopProcessing="true">
                    <match url="^([_0-9a-zA-Z-]+/)?files/(.+)" ignoreCase="false" />
                    <action type="Rewrite" url="wp-includes/ms-files.php?file={R:1}" appendQueryString="false" />
                </rule>
                <rule name="WordPress Rule 2" stopProcessing="true">
                    <match url="^([_0-9a-zA-Z-]+/)?wp-admin$" ignoreCase="false" />
                    <action type="Redirect" url="{R:1}wp-admin/" redirectType="Permanent" />
                </rule>
                <rule name="WordPress Rule 3" stopProcessing="true">
                    <match url="^" ignoreCase="false" />
                    <conditions logicalGrouping="MatchAny">
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" />
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" />
                    </conditions>
                    <action type="None" />
                </rule>
                <rule name="WordPress Rule 4" stopProcessing="true">
                    <match url="^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*)" ignoreCase="false" />
                    <action type="Rewrite" url="{R:1}" />
                </rule>
                <rule name="WordPress Rule 5" stopProcessing="true">
                    <match url="^([_0-9a-zA-Z-]+/)?([_0-9a-zA-Z-]+/)?(.*\.php)$" ignoreCase="false" />
                    <action type="Rewrite" url="{R:2}" />
                </rule>
                <rule name="WordPress Rule 6" stopProcessing="true">
                    <match url="." ignoreCase="false" />
                    <action type="Rewrite" url="index.php" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>		

On sudomain install, it is:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="WordPress Rule 1" stopProcessing="true">
                    <match url="^index\.php$" ignoreCase="false" />
                    <action type="None" />
                </rule>
                <rule name="WordPress Rule for Files" stopProcessing="true">
                    <match url="^files/(.+)" ignoreCase="false" />
                    <action type="Rewrite" url="wp-includes/ms-files.php?file={R:1}" appendQueryString="false" />
                </rule>
                <rule name="WordPress Rule 2" stopProcessing="true">
                    <match url="^wp-admin$" ignoreCase="false" />
                    <action type="Redirect" url="wp-admin/" redirectType="Permanent" />
                </rule>
                <rule name="WordPress Rule 3" stopProcessing="true">
                    <match url="^" ignoreCase="false" />
                    <conditions logicalGrouping="MatchAny">
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" />
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" />
                    </conditions>
                    <action type="None" />
                </rule>
                <rule name="WordPress Rule 4" stopProcessing="true">
                    <match url="^(wp-(content|admin|includes).*)" ignoreCase="false" />
                    <action type="Rewrite" url="{R:1}" />
                </rule>
                <rule name="WordPress Rule 5" stopProcessing="true">
                    <match url="^([_0-9a-zA-Z-]+/)?(.*\.php)$" ignoreCase="false" />
                    <action type="Rewrite" url="{R:2}" />
                </rule>
                <rule name="WordPress Rule 6" stopProcessing="true">
                    <match url="." ignoreCase="false" />
                    <action type="Rewrite" url="index.php" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>	

I think that Wordpress Rules for files and Wordpress Rule 4 and 5 should follow same rules than htaccess suggest.
When following actual suggest in a subfolder installation, I get an HTPP Error in call to sub site, error is always reproductible for me - can you confirm.

A fix could be to add a subdir replacement rule {R:1} for subdomain install and {R:2} for subfolder.

Implementation in the network.php file (adding $iis_subdir_replacement_12):

$iis_subdir_replacement = $subdomain_install ? '' : '{R:1}';
$iis_subdir_replacement_12 = $subdomain_install ? '{R:1}' : '{R:2}';

$web_config_file = '<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="WordPress Rule 1" stopProcessing="true">
                    <match url="^index\.php$" ignoreCase="false" />
                    <action type="None" />
                </rule>';
				if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) {
					$web_config_file .= '
                <rule name="WordPress Rule for Files" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . 'files/(.+)" ignoreCase="false" />
                    <action type="Rewrite" url="' . $iis_rewrite_base . 'wp-includes/ms-files.php?file='.$iis_subdir_replacement_12.'" appendQueryString="false" />
                </rule>';
                }
                $web_config_file .= '
                <rule name="WordPress Rule 2" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . 'wp-admin$" ignoreCase="false" />
                    <action type="Redirect" url="' . $iis_subdir_replacement . 'wp-admin/" redirectType="Permanent" />
                </rule>
                <rule name="WordPress Rule 3" stopProcessing="true">
                    <match url="^" ignoreCase="false" />
                    <conditions logicalGrouping="MatchAny">
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" />
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" />
                    </conditions>
                    <action type="None" />
                </rule>
                <rule name="WordPress Rule 4" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . '(wp-(content|admin|includes).*)" ignoreCase="false" />
                    <action type="Rewrite" url="' . $iis_rewrite_base . $iis_subdir_replacement_12 . '" />
                </rule>
                <rule name="WordPress Rule 5" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . '([_0-9a-zA-Z-]+/)?(.*\.php)$" ignoreCase="false" />
                    <action type="Rewrite" url="' . $iis_rewrite_base . $iis_subdir_replacement_12 . '" />
                </rule>
                <rule name="WordPress Rule 6" stopProcessing="true">
                    <match url="." ignoreCase="false" />
                    <action type="Rewrite" url="index.php" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>';

Sorry for my english :)

regards