PHP being included in generated Multisite web.config file

[stevegrunwell]

When enabling a Multisite network on a subdirectory installation of 3.5 this morning on a Windows server (Windows Server 2008r2, IIS 7, PHP 5.3.18, MySQL 5.1) the web.config file it generated on the network setup screen had what appears to be unescaped PHP (around the "WordPress Rules for Files" rule), which broke the XML file.

Generated XML:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="WordPress Rule 1" stopProcessing="true">
                    <match url="^index\.php$" ignoreCase="false" />
                    <action type="None" />
                </rule>';
				if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) {
					 .= '
                <rule name="WordPress Rule for Files" stopProcessing="true">
                    <match url="^blog/([_0-9a-zA-Z-]+/)?files/(.+)" ignoreCase="false" />
                    <action type="Rewrite" url="blog/C:\inetpub\wwwroot\wordpress\blog/wp-includes/ms-files.php?file={R:1}" appendQueryString="false" />
                </rule>';
                }
                 .= '
                <rule name="WordPress Rule 2" stopProcessing="true">
                    <match url="^blog/([_0-9a-zA-Z-]+/)?wp-admin$" 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="^blog/([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*)" ignoreCase="false" />
                    <action type="Rewrite" url="blog/C:\inetpub\wwwroot\wordpress\blog/{R:1}" />
                </rule>
                <rule name="WordPress Rule 5" stopProcessing="true">
                    <match url="^blog/([_0-9a-zA-Z-]+/)?([_0-9a-zA-Z-]+/)?(.*\.php)$" ignoreCase="false" />
                    <action type="Rewrite" url="blog/C:\inetpub\wwwroot\wordpress\blog/{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>

The same broken XML file can be accessed by visiting the "Network Setup" page from the Network Admin panel.

Broken by [22042]. A heredoc block was added there, which wraps the PHP code.

fix syntax error

This should solve it. Not sure about the code style. A sprintf() might be easier to read …

Ouch.

In 23177:

Fix code vomit in IIS rewrite rule generation. fixes #22920 for trunk. props toscho.

In 23178:

Fix code vomit in IIS rewrite rule generation. fixes #22920 for the 3.5 branch. props toscho.