Stop Mod_Rewrite execution on matching RewriteCond

StackOverflow https://stackoverflow.com/questions/229007

  •  04-07-2019
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Question

I am running the free version of Helicon ISAPI Rewrite on IIS and have several sites running through the same set of rewrite rules. Up 'til now this has been fine as all the rules have applied to all the sites. I have recently added a new site which I don't want to run through all the rules. Is there any way to make requests to this site break out of the rule set after it's executed its own rules.

I've tried the following with no luck; all requests to mysite.com result in a 404. I guess what I'm looking for is a rule that does nothing and is marked as the last rule to execute [L].

## New site rule for mysite.com only
RewriteCond  Host:  (?:www\.)?mysite\.com
RewriteRule  /content([\w/]*)   /content.aspx?page=$1 [L]

## Break out of processing for all other requests to mysite.com
RewriteCond  Host:  (?:www\.)?mysite\.com
RewriteRule (.*) - [L]

## Rules for all other sites
RewriteRule ^/([^\.\?]+)/?(\?.*)?$ /$1.aspx$2 [L]
...
Was it helpful?

Solution

I've done something similar, to stop mod_rewrite on a WebDAV folder: 

# stop processing if we're in the webdav folder
RewriteCond %{REQUEST_URI} ^/webdav [NC]
RewriteRule .* - [L]

That should work for your purposes too. If not or if you are interested in additional references, see this previous question: How do I ignore a directory in mod_rewrite?

OTHER TIPS

Rewrite it to itself?

RewriteCond  Host:  (?:www\.)?mysite\.com
RewriteRule ^(.*)$ $1 [QSA,L]

I don't know ISAPI Rewrite syntax, but on IIRF, the "break out" rule is like this: 

## Break out of processing for all other requests to mysite.com
RewriteCond %{SERVER_NAME}  ^(?:www\.)?mysite\.com$
RewriteRule (.*) - [L]

or

## Break out of processing for all other requests to mysite.com
RewriteCond %{HTTP_HOST}  ^(?:www\.)?mysite\.com$
RewriteRule (.*) - [L]

In each case the rule says "don't rewrite (and don't process any more rules)" and it applies when the hostname used is mysite.com or www.mysite.com. The [L] flag is the part that says "don't process any more rules" and the - replacement is the part that says "don't rewrite".

RewriteRule ^ - [END]

  • . would be incorrect, since it requires at least 1 char
  • .* could be less efficient IMHO
  • L is worse than END, as it allows for additional rounds, also on internal redirects. Only END truly stops. → Details
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