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1. jazbek
   Member
   Posted 1 year ago #

   I have found a large number of these errors in our apache log:
   

   Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.

   I had our sysadmin enable LogLevel debug and found they were coming this scenario:
   

   [Wed Nov 10 17:24:59 2010] [debug] core.c(3063): [client xxx.xxx.xxx.xxx] r->uri = /&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /post-slug/&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /10/post-slug/&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /11/10/post-slug/&refer=http:/www.facebook.com/l.php
   [Wed Nov 10 17:24:59 2010] [debug] core.c(3069): [client xxx.xxx.xxx.xxx] redirected from r->uri = /2010/11/10/post-slug/&refer=http://www.facebook.com/l.php

   I looked at our .htaccess, and it seems to me like this rule is causing the problem?
   

   RewriteRule  ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]

   This is one of the rules that is required for multi-site, though it seems like it causes a URL that ends in .php to never resolve, if the .php is not part of a filename, as in the above example.. which seems like it would be really common -- a facebook referral.

   Just wanted to bring this up and see what others think, is this a real issue? For now I am going to strip the &refer=xxx stuff out of the URL before it hits the WP rules.

2. Ipstenu
   Half-Elf Support Rogue & Mod
   Posted 1 year ago #

   What's the FULL .htaccess and are you using subdomains or subfolders?

   Is this only happening on SOME links or all?

3. jazbek
   Member
   Posted 1 year ago #

   Subdomains. Please check the apache debug log I pasted in my post (2nd block of "code") to see the type of URL that causes the problem redirect (it ends in .php, but it's not a file). Here is my .htaccess:

   <FilesMatch "\.(ico|jpg|jpeg|png|gif|js|css|swf)$">
   ExpiresDefault "access plus 2 hours"
   </FilesMatch>
   
   RewriteEngine On
   RewriteBase /
   
   <IfModule mod_security.c>
   <Files async-upload.php>
   SecFilterEngine Off
   SecFilterScanPOST Off
   </Files>
   </IfModule>
   
   # BEGIN WPSuperCache
   <IfModule mod_rewrite.c>
   RewriteEngine On
   RewriteBase /
   AddDefaultCharset UTF-8
   RewriteCond %{REQUEST_URI} !^.*[^/]$
   RewriteCond %{REQUEST_URI} !^.*//.*$
   RewriteCond %{REQUEST_METHOD} !POST
   RewriteCond %{QUERY_STRING} !.*=.*
   RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
   RewriteCond %{HTTP:X-Wap-Profile} !^[a-z0-9\"]+ [NC]
   RewriteCond %{HTTP:Profile} !^[a-z0-9\"]+ [NC]
   RewriteCond %{HTTP_USER_AGENT} !^.*(2.0\ MMP|240x320|400X240|AvantGo|BlackBerry|Blazer|Cellphone|Danger|DoCoMo|Elaine/3.0|EudoraWeb|Googlebot-Mobile|hiptop|IEMobile|KYOCERA/WX310K|LG/U990|MIDP-2.|MMEF20|MOT-V|NetFront|Newt|Nintendo\ Wii|Nitro|Nokia|Opera\ Mini|Palm|PlayStation\ Portable|portalmmm|Proxinet|ProxiNet|SHARP-TQ-GX10|SHG-i900|Small|SonyEricsson|Symbian\ OS|SymbianOS|TS21i-10|UP.Browser|UP.Link|webOS|Windows\ CE|WinWAP|YahooSeeker/M1A1-R2D2|iPhone|iPod|Android|BlackBerry9530|LG-TU915\ Obigo|LGE\ VX|webOS|Nokia5800).*
   RewriteCond %{HTTP_user_agent} !^(w3c\ |w3c-|acs-|alav|alca|amoi|audi|avan|benq|bird|blac|blaz|brew|cell|cldc|cmd-|dang|doco|eric|hipt|htc_|inno|ipaq|ipod|jigs|kddi|keji|leno|lg-c|lg-d|lg-g|lge-|lg/u|maui|maxo|midp|mits|mmef|mobi|mot-|moto|mwbp|nec-|newt|noki|palm|pana|pant|phil|play|port|prox|qwap|sage|sams|sany|sch-|sec-|send|seri|sgh-|shar|sie-|siem|smal|smar|sony|sph-|symb|t-mo|teli|tim-|tosh|tsm-|upg1|upsi|vk-v|voda|wap-|wapa|wapi|wapp|wapr|webc|winw|winw|xda\ |xda-).*
   RewriteCond %{HTTP:Accept-Encoding} gzip
   RewriteCond %{DOCUMENT_ROOT}/wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html.gz -f
   RewriteRule ^(.*) "/wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html.gz" [L]
   
   RewriteCond %{REQUEST_URI} !^.*[^/]$
   RewriteCond %{REQUEST_URI} !^.*//.*$
   RewriteCond %{REQUEST_METHOD} !POST
   RewriteCond %{QUERY_STRING} !.*=.*
   RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
   RewriteCond %{HTTP:X-Wap-Profile} !^[a-z0-9\"]+ [NC]
   RewriteCond %{HTTP:Profile} !^[a-z0-9\"]+ [NC]
   RewriteCond %{HTTP_USER_AGENT} !^.*(2.0\ MMP|240x320|400X240|AvantGo|BlackBerry|Blazer|Cellphone|Danger|DoCoMo|Elaine/3.0|EudoraWeb|Googlebot-Mobile|hiptop|IEMobile|KYOCERA/WX310K|LG/U990|MIDP-2.|MMEF20|MOT-V|NetFront|Newt|Nintendo\ Wii|Nitro|Nokia|Opera\ Mini|Palm|PlayStation\ Portable|portalmmm|Proxinet|ProxiNet|SHARP-TQ-GX10|SHG-i900|Small|SonyEricsson|Symbian\ OS|SymbianOS|TS21i-10|UP.Browser|UP.Link|webOS|Windows\ CE|WinWAP|YahooSeeker/M1A1-R2D2|iPhone|iPod|Android|BlackBerry9530|LG-TU915\ Obigo|LGE\ VX|webOS|Nokia5800).*
   RewriteCond %{HTTP_user_agent} !^(w3c\ |w3c-|acs-|alav|alca|amoi|audi|avan|benq|bird|blac|blaz|brew|cell|cldc|cmd-|dang|doco|eric|hipt|htc_|inno|ipaq|ipod|jigs|kddi|keji|leno|lg-c|lg-d|lg-g|lge-|lg/u|maui|maxo|midp|mits|mmef|mobi|mot-|moto|mwbp|nec-|newt|noki|palm|pana|pant|phil|play|port|prox|qwap|sage|sams|sany|sch-|sec-|send|seri|sgh-|shar|sie-|siem|smal|smar|sony|sph-|symb|t-mo|teli|tim-|tosh|tsm-|upg1|upsi|vk-v|voda|wap-|wapa|wapi|wapp|wapr|webc|winw|winw|xda\ |xda-).*
   RewriteCond %{DOCUMENT_ROOT}/wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html -f
   RewriteRule ^(.*) "/wp-content/cache/supercache/%{HTTP_HOST}/$1/index.html" [L]
   </IfModule>
   
   # END WPSuperCache
   
   # BEGIN WordPress
   
   #uploaded files
   RewriteRule ^(.*/)?files/$ index.php [L]
   RewriteCond %{REQUEST_URI} !.*wp-content/plugins.*
   RewriteRule ^(.*/)?files/(.*) wp-includes/ms-files.php?file=$2 [L]
   
   # add a trailing slash to /wp-admin
   RewriteCond %{REQUEST_URI} ^.*/wp-admin$
   RewriteRule ^(.+)$ $1/ [R=301,L]
   
   RewriteCond %{REQUEST_FILENAME} -f [OR]
   RewriteCond %{REQUEST_FILENAME} -d
   RewriteRule . - [L]
   RewriteRule  ^([_0-9a-zA-Z-]+/)?(wp-.*) $2 [L]
   RewriteRule  ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
   RewriteRule . index.php [L]
   # END WordPress

4. Ipstenu
   Half-Elf Support Rogue & Mod
   Posted 1 year ago #

   Change the WordPress bit to this for better SubDomain support:

   # BEGIN WordPress
   RewriteEngine On
   RewriteBase /
   RewriteRule ^index\.php$ - [L]
   
   # uploaded files
   RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L]
   
   RewriteCond %{REQUEST_FILENAME} -f [OR]
   RewriteCond %{REQUEST_FILENAME} -d
   RewriteRule ^ - [L]
   RewriteRule . index.php [L]
   # END WordPress

   The one you have is the old WPMU one, and while it should work, the simplified one here may work better :)

   You may need to re-save WP Super Cache settings (or flush your cache and go back) after the change. I can't remember...

5. jazbek
   Member
   Posted 1 year ago #

   Thanks, yeah I was able to solve the problem on my own but I just wanted to bring this up to see if it was worth logging a bug for.

   However, I see that the new (good) rules you suggested are the same ones that WP 3.01 tells people to put in their site. Not sure how those old rules got in there as this is a new site.

   Thanks for the response!

6. Ipstenu
   Half-Elf Support Rogue & Mod
   Posted 1 year ago #

   You're welcome!

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