Help: rewriterule for session id needed

mod_rewrite session handling

[Frank_OL]

Hi!

For some of my projects I need a rewriterule to convert sessionids:

Old version:
============
Up to now my urls are like the following
---with cookies:---
www.domain.com/news/news.php4?newsid=123
If cookies are not activated the url gets changed by reload:
---without cookies:---
www.domain.com/news/news.php4?newsid=123&dclp=987654321

I would like to change my urls to get my websites indexed by google and friends:

Idea 1:
=======
---with cookies:---
www.domain.com/news/news_123.html
---without cookies:---
www.domain.com/sid/987654321/news/news_123.html
or
www.domain.com/sid987654321/news_news_123.html

Idea 2:
=======
---with cookies:---
www.domain.com/news/news_123
---without cookies:---
www.domain.com/news/news_123/sid/987654321
or
www.domain.com/news/news_123/sid987654321

How can I realize one of these ideas?

Which one is better to get indexed by google?

Iīve tried many rewriterules but no one worked.

I hope you can help me!

Best regards

Frank

[edited by: DaveAtIFG at 3:01 am (utc) on Mar. 1, 2003]
[edit reason] Deleted specific URLs [/edit]

[shrewsbury matt]

If you put the session ID in the url like that you'll end up with duplicate pages. Every time googlebot visits it will get a different URL but the same page.

Duplicate page penalty will come into play.

[Birdman]

Welcome to Webmaster World, Frank_O!

This should do what you want. Here is a good mod_rewrite resource [engelschall.com].

RewriteEngine On
RewriteRule ^/news/news\.php4?newsid=(.*)$ /news/news_$1
RewriteRule ^/news/news\.php4?newsid=(.*)&dclp=(.*)$ /news/news_$1/$2
[L]

[Frank_OL]

Hi Birdman, hi all,

thanks, but thatīs not the solution:

My old Rewrite rule (doesnīt work):

RewriteRule ^(.*)/sid/(.*)/(.*)$ /$1/$3&sessionid=$2

The /sid/987654321 should be extracted and appended at the end as my sessionid.

When I enter the url:
www.domain.com/sid/987654321/somethingelse?a=1

The following url should be processed:
www.domain.com/somethingelse?a=1&sessionid=987654321

The problem is to get the sessionid from the front to the end.

How can I realize this?

Best regards

Frank

[Birdman]

Sorry aboout that. I had it completely backwards. This looks right.
RewriteEngine On
RewriteRule ^/news/news_(.*)$ /news/news.php4?newsid=$1
RewriteRule ^/news/news_(.*)/(.*)$ /news/news.php4?newsid=$1&sid=$2[L]

[jdMorgan]

shrewsbury_matt's timely warning still applies...

Jim

P.S. You'll probably have to escape those underscores, i.e., use \_

[Frank_OL]

Hi!

Here is my actual .htaccess for url rewriting.
Please check out the last line with "COMPLETE_TAIL".

---------------------------------

RewriteEngine on
Options +FollowSymlinks
RewriteBase /mountainbike

#News
RewriteRule ^news/news_(.*).html$ /news/news.php4?newsid=$1

#Forum
RewriteRule ^forum/frage_(.*).html$ /forum/frage.php4?nr=$1

#Kleinanzeigen
RewriteRule ^kleinanzeigen/kleinanzeige_(.*).html$ /kleinanzeigen/kleinanzeige.php4?nr=$1

#Veranstaltungen
RewriteRule ^veranstaltungen/veranstaltung_(.*).html$ /veranstaltungen/veranstaltung.php4?vid=$1

#Touren
RewriteRule ^touren/tour_(.*).html$ /touren/tour.php4?tourid=$1

#Links
RewriteRule ^verzeichnis/rubrik_(.*).html$ /verzeichnis/rubrik.php4?rubrik=$1

#Session-ID from front to back
#**************************************************
#RewriteRule ^sid/(.*)/(COMPLETE_TAIL)$ /$2&sessionid=$1
#**************************************************

---------------------------------

For adding the session id I need the last RewriteRule.

?
Whatīs the regular term for COMPLETE_TAIL (which often includes many subdirectories, parameters and "/" and "?" etc.)?
?

The leading "sid/<many_digits>" must be appended to the end as "&sessionid=<many_digits>".

Best regards

Frank

[jdMorgan]

Frank_OL,

#Session-ID from front to back
RewriteCond %{QUERY_STRING} (.*)
#RewriteRule ^sid/(.*)/(.*)$ /$2?%1&sessionid=$1

The "%1" back-references the query string matched in the preceding RewriteCond

HTH,
Jim

[Frank_OL]

Hi!

The session handling and the html-to-php-converter donīt work together.

My htaccess-file:

***********************************

RewriteEngine on
Options +FollowSymlinks
RewriteBase /mountainbike

#----------------------------------
#----- html-to-php4-converter -----

#News
#RewriteRule sid/(.*)/news/news_(.*).html$ /news/news.php4?newsid=$2&rule=20&dclp=$1
RewriteRule news/news_(.*).html$ /news/news.php4?newsid=$1&rule=1

#Forum
RewriteRule forum/frage_(.*).php$ /forum/frage.php4?nr=$1&rule=2

#Kleinanzeigen
RewriteRule kleinanzeigen/kleinanzeige_(.*).html$ /kleinanzeigen/kleinanzeige.php4?nr=$1&rule=4

#Veranstaltungen
RewriteRule veranstaltungen/veranstaltung_(.*).html$ /veranstaltungen/veranstaltung.php4?vid=$1&rule=5

#Touren
RewriteRule touren/tour_(.*).html$ /touren/tour.php4?tourid=$1&rule=6

#Links
RewriteRule verzeichnis/rubrik_(.*).html$ /verzeichnis/rubrik.php4?rubrik=$1&rule=7

#----- html-to-php4-converter -----
#----------------------------------

#----------------------------------
#Session-ID from front to back
RewriteCond %{QUERY_STRING} (.*)
RewriteRule ^sid/(.*)/(.*)/(.*)$ /$2/$3?%1&dclp=$1&rule=8 [L]
RewriteRule ^sid/(.*)/(.*)$ /$2?%1&dclp=$1&rule=9 [L]
RewriteRule ^sid/(.*)$ /?%1&dclp=$1&rule=10
#----------------------------------

*******************************

The problem:

my link to the news-site:
[mountainbike.de...]

the result after rewriting:
[mountainbike.de...]

The result hasnīt got the old session-id, because only rule 1 has been processed. (The dclp-tail in the resulting url hasnīt been set by the rewrite rules but by the redirect-function in my session-handling-class.)

A combined rule like rule20 (in my htaccess-file) doesnīt work.

Links to urls ending with a directory or .php4 work fine.

Where is the mistake in my htaccess-file?

Best regards

Frank

[jdMorgan]

Frank_OL,

You must repeat the RewriteCond for each RewriteRule. The RewriteCond only applies to the first RewriteRule which follows it.

Jim

[Frank_OL]

Hi!

It doesnīt work.

How can I assess and especially define the order of rules processed while rewriting the url?

[andreasfriedrich]

The RewriteRule [httpd.apache.org]s are processed in the order they appear in your .htaccess file. RewriteCond [httpd.apache.org] rules are evaluated if their corresponding RewriteRule [httpd.apache.org] matched.

[L] (last) will stop the rewriting process when it is encountered. [N] (next) will restart the rewriting process at the beginning. [C] (chain) lets you chain RewriteRule [httpd.apache.org]s together. If the first rule in a chain does not matched all others in that chain will be skipped.

Andreas