[TYPO3-core] Making Real URL work for IIS

[Martin Kutschker]

Hi!

For IIS there exist several mod_rewrite equivalents. I have tested two of 
them: ISAPI_rewrite (free "lite" version) [1] and mod_rewrite (GPL) [2].

Both have one in common: They change REQUEST_URI, so Real URL breaks. But 
there is a solution to it.

As ISAPI_rewrite sets HTTP_X_REWRITE_URL to the original value of 
REQUEST_URI we can reload it with the old value (see [3] for a success 
story). mod_rewrite does no such thing, but the original URL can be 
preserved as query argument.

The docs of IIS Rewrite [4] says it sets HTTP_SCRIPT_URL, but I haven't 
verified [yet] it as it costs money (free trial is possible). If it doesn't 
work the query argument trick should work here too. But there is a entry in 
the bugtracker [4] which uses it though the author fails to tell that he is 
using IIS Rewrite (but HTTP_SCRIPT_URL isn't set by IIS itself)

So to make use of these I suggest, we add a configuration setting from 
which global variable REQUEST_URI is to retrieve:

case 'REQUEST_URI':
  if ($GLOBALS['TYPO3_CONF_VAR']['SYS']['requestURI']) {
   list($v,$n) = split('|',$GLOBALS['TYPO3_CONF_VAR']['SYS']['requestURI']);
   $retVal = $GLOBALS[$v][$n];
  } elseif (!$_SERVER['REQUEST_URI']) {
  ...
}

For ISAP_rewrite you have to use _SERVER|HTTP_X_REWRITE_URL etc

If someone wants to play with it I can provide sample configurations.

Anyway, what do you think?

Masi

[1]
http://www.isapirewrite.com/
http://www.helicontech.com/

[2]
http://www.iismods.com/

[3]
http://wiki.typo3.org/index.php/Windows#ISAPI_Rewrite

[4]
http://www.qwerksoft.com/products/iisrewrite/

[5]
http://bugs.typo3.org/view.php?id=541#3173