IIRF Redirect Rewrite Loop (IIS6) - iis

I'm attempting a simple redirect using this technique from the IIRF guide. My rules are:
ReWriteRule ^/endpage /highly/embedded/page.aspx [L]
RedirectRule ^/.*page\.aspx http://www.myurl.com/endpage [R=301]
I get a browser message saying "Firefox has detected that the server is redirecting the request for this address in a way that will never complete."
Any tips?

What I would do is examine the IIRF log file, and see where the loop occurs.
Then modify the rules to ensure they terminate.
There can be unintended, unimagined loops. It should be easy to see from the log files.
Good luck.

Related

Preserve Requested Protocol in Sub-Directory with .htaccess

We have a http > https redirect on our 'top' level:
example.com/top/
Now for a sub-directory of /top/:
example.com/top/sub/
I want to preserve whatever protocol is requested there.
So if it's http://example.com/top/sub/this.php I want it to stay as 'http'
And if it's https://example.com/top/sub/this.php I want it to stay as 'https'
Currently I have an .htaccess file in the /top/sub/ directory with:
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) http://%{HTTP_HOST}%{REQUEST_URI} [R=301,END]
Which is doing exactly what I need it to be doing, so in terms of all the requests being sent to the sub-directory it's perfect.
The issue is I'm getting an error message in the error_log reporting this:
[REWRITE] detected external loop redirection with target URL: http://example.com/top/sub/this.php, skip.
I understand why I'm getting this message, because every time a HTTP request is made it's matching this condition, I just don't know how to stop it. I tried using the 'END' parameter to force only one redirect - but this doesn't seem to be working, or at least not working the way I expected it to.
All I want is for the protocol to remain the same as requested for /top/sub/ - the issue is the /top/ redirect sending everything to HTTPS.
Is this possible?
I would be interested to know if there is actually a way to preserve a protocol without creating a loop, however I was able to achieve what I was after by just adjusting the redirect in /top/ to only redirect pages that didn't match /top/sub/ - I really should have thought of that as a solution earlier.
Hope that can help someone.

Redirects not working as expected

I have an .htaccess file with several lines. It does not work as expected. Mod_rewrite is enabled. RewriteLogLevel is set to 9.
The first two rules are there to forbid uris with a length more then 80 characters:
RewriteCond %{REQUEST_URI} ^.{80}
RewriteRule .* - [F]
It does not seem to get evaluated as every test url passes through and it does not generate an error either.
I also tried:
RewriteRule .{80} - [F]
But that did not do the trick either. The process ends with a 404, not a 403.
This next rule is not working either. It used to work.
RewriteRule ^(\/)?([\w]+)$ /index.php [L]
The URI /Contact was always handled by this index.php.
Whatever URL I type I get a 404. I should get a 403 or a 200. Not a 404. What am I missing?
Apache has on all directories the permission to read, write and execute and on all files the permission to read and write.
The two urls for testing are:
127.0.0.4/asssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssddddddddddddddddddddd?p=s&s=psv
and
127.0.0.4/Contact
The alias for 127.0.0.4 used is considerate.lb.
Try this rule instead:
RewriteCond %{THE_REQUEST} ^[A-Z]{3,}\s/+\S{80}
RewriteRule ^ - [F]
Using THE_REQUEST instead of REQUEST_URI as that variable might get overwritten due to presence of other rules in your .htaccess
Finally I have found a solution. The problem was not in the coding of the .htaccess. I replaced the file with a previous version, added the new lines to test the request and it worked all fine.
It is not a satisfactory solution, because it can happen again and I do not have any clue what caused the error. If someone knows the error, I would love to hear what might have been the exact cause and how to solve that properly. I would like to change the tags of the question as the current tags might be misleading (although other people might experience the same problem how apache handles a .htaccess file), but I do not know which tags I should use.

Simple RewriteRule with nginx

I'm trying to write a RewriteRule to make a simple url. I want users to be able to type enter
www.example.com/somepage
and have it take them to
www.example.com/abc/somepage.php
How can this be done in .htaccess?
I've tried these to no avail:
RewriteRule ^somepage$ abc/somepage.php [L]
RewriteRule ^/somepage$ /abc/somepage.php [L]
What am I doing wrong?
Edit: nginx can also handle rewrites in its configuration files (and I think is actually preferred), which was my case (see my answer below). HTH
If you want the user's web browser to be redirected to your PHP page then you need the R=301 flag at the end of the RewriteRule.
But if you want the request to be silently rewritten (so that Apache knows where to find the resource, but the user's web browser just sees the "clean" URL) then you don't want the `R' flag.
Try the following:
RewriteRule ^somepage$ /abc/somepage.php
This will only rewrite a request for /somepage so that Apache fetches the content from /abc/somepage.php instead.
Our nginx server was utilizing .htaccess files (as I implemented rewrites there before), but now it is handling the rewrites in its configuration (.conf) files (which is the recommended method).
I do not have permission to modify the .conf files, so I won't post any untested code.. Hope this helps somebody!

trying to redirect a link in joomla or .htaccess

we moved our joomla site and rebuilt. in the process a link got moved that we need to be as it was before.
before:
www.mysite.org/kindergym
now it lives here:
www.mysite.org/education/kindergym
it would seem that it would be easy to go into com_redirect and do this. however, it only works for the following
mysite.org/kindergym without the www
with the www attached writing the old url returns a 404 error page, not a redirect.
i tried to make a separate redirect with the www too and it wouldnt let me. i tried a separate module with no success and have played around with the .htaccess file (although i am not very knowledgeable about htaccess).
could someone explain the reason why this would be an issue? the difference between the two. i tried calling my host and they were less than helpful and actually told me what i wanted to do couldnt be done LOL.
thanks.
I take it the solution you have would work if you redirect the entire mysite.org to www.mysite.org?
If so, create a .htaccess file in the website root. Put the following inside it:
########## Begin - Redirecting non-www request to www
#
RewriteEngine On
RewriteCond %{HTTP_HOST} ^mysite.org [NC]
RewriteRule (.*) http://www.mysite.org/$1 [L,R=301]
#
########## End - Redirecting non-www request to www
You also need to make sure mod_rewrite is enabled on the apache-server, but I think most providers support that.
I suggest you post your full .htaccess here. However I think all you need is this rule:
RewriteRule ^(?!education/).*)$ education/$1 [L,NC]
The other two answers are good! but better implement 301 redirect in httpd.conf since it's compiled once on server restart. The same code in .htccess is interpreted for each and every HTTP request!

htaccess reditect if server returns 404

For example I have a page http://www.f1u.org/en/its-interesting/166-cricri.
How to write rule: if that page exists - open it.
If it returns 404, then redirect to http://www.f1u.org/its-interesting/166-cricri
use this line in .htaccess file
ErrorDocument 404$ http://www.f1u.org/its-interesting/166-cricri
It sounds like you want the apache server to look ahead to see if the current URL exists, if not, redirect them. I think you might be able to use mod_rewrite to accomplish this.
My first stab at it would be something like:
RewriteEngine On
RewriteCond %{IS_SUBREQ} false
RewriteCond %{REQUEST_URI} !-U
RewriteRule /en(/.*) $1 [R,L]
I'll note that I haven't tried it so the syntax and effects could be slightly off, and you'd need to be careful that you don't put yourself into an infinite loop, or wind up with too many subrequests (as that could impact the performance of your server). But hopefully it'll give you a starting point to play with. Alternatively mod-rewrite could (depending on server permissions) let you invoke scripts to determine rewrites as well, which could be an option as well.

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