Apache Baikal server RewriteRule for CardDAV short URL - apache

I'm using Baikal CalDAV and CardDAV server to keep my contacts and calendars in sync. It works pretty well with all of my clients. For iPhone and Mac suppoer I even put /.well-known/ redirect rules in my Apache vHost file.
Contacts Sync is work on the following URL:
myurl/html/card.php/principals/(username)
I would like to make this URL shorter for other users. I thought I could do it with mod_rewrite on Apache but I couldn't make it work.
I want to rewrite
myurl/(username)
to
myurl/html/card.php/principals/(username)
It looks really simple but I mostly ended up with recursive redirects. I used following rewrite rule
RewriteRule ^(.*) /html/card.php/principals/$1
Any help would be appreciated.

Yes, it's a rewrite loop error.
(.*) matches any uri including the destination uri and rewrites it back to itself causing an infinite loop error.
To avoid this error, we need to exclude the path we are rewriting to.
RewriteCond %{REQUEST_URI} !^/html/card.php/principal/
RewriteRule (.*) /html/card.php/principal/$1
Now the rule is conditional, it will rewrite /foo to /html/card.php/principal/foo it will not rewrite /html/card.php/principal/foo to /html/card.php/principal/foo .

Related

.htaccess rewrite returning Error 404

RewriteEngine on
RewriteCond %{QUERY_STRING} (^|&)public_url=([^&]+)($|&)
RewriteRule ^process\.php$ /api/%2/? [L,R=301]
Where domain.tld/app/process.php?public_url=abcd1234 is the actual location of the script.
But I am trying to get .htaccess to make the URL like this: domain.tld/app/api/acbd1234.
Essentially hides the process.php script and the get query ?public_url.
However the script above is returning error 404 not found.
I think this is what you are actually looking for:
RewriteEngine on
RewriteCond %{QUERY_STRING} (?:^|&)public_url=([^&]+)(?:$|&)
RewriteRule ^/?app/process\.php$ /app/api/%1 [R=301,QSD]
RewriteRule ^/?app/api/([^/]+)/?$ /app/process.php?public_url=$1 [END]
If you receive an internal server error (http status 500) for that then check your http servers error log file. Chances are that you operate a very old version of the apache http server, you may have to replace the [END] flag with the [L] flag which probably will work just fine in this scenario.
And a general hint: you should always prefer to place such rules inside the http servers (virtual) host configuration instead of using dynamic configuration files (.htaccess style files). Those files are notoriously error prone, hard to debug and they really slow down the server. They are only supported as a last option for situations where you do not have control over the host configuration (read: really cheap hosting service providers) or if you have an application that relies on writing its own rewrite rules (which is an obvious security nightmare).
UPDATE:
Based on your many questions in the comments below (we see again how important it is to be precise in the question itself ;-) ) I add this variant implementing a different handling of path components:
RewriteEngine on
RewriteCond %{QUERY_STRING} (?:^|&)public_url=([^&]+)(?:$|&)
RewriteRule ^/?app/process\.php$ /api/%1 [R=301,QSD]
RewriteRule ^/?api/([^/]+)/?$ /app/process.php?public_url=$1 [END]
I am trying to get .htaccess to make the URL like this: example.com/app/api/acbd1234.
You don't do this in .htaccess. You change the URL in your application and then rewrite the new URL to the actual/old URL. (You only need to redirect this, if the old URLs have been indexed by search engines - but you need to watch for redirect loops.)
So, change the URL in your application to /app/api/acbd1234 and then rewrite this in .htaccess (which I assume in in your /app subdirectory). For example:
RewriteEngine On
# Rewrite new URL back to old
RewriteRule ^api/([^/]+)$ process.php?public_url=$1 [L]
You included a trailing slash in your earlier directive, but you omitted this in your example URL, so I've omitted it here also.
If you then need to also redirect the old URL for the sake of SEO, then you can implement a redirect before the internal rewrite:
RewriteEngine On
# Redirect old URL to new (if request by search engines or external links)
RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteCond %{QUERY_STRING} (?:^|&)public_url=([^&]+)(?:$|&)
RewriteRule ^process\.php$ /app/api/%1? [R=302,L]
# Rewrite new URL back to old
RewriteRule ^api/([^/]+)$ process.php?public_url=$1 [L]
The check against REDIRECT_STATUS is to avoid a rewrite loop. ?: inside the parenthesised subpattern avoids the group being captured as a backreference.
Change the 302 (temporary) to 301 (permanent) only when you are sure it's working OK, to avoid erroneous redirects being cached by the browser.

RewriteRule Redirects paths not working

I moved my website to a new server with a new CMS so I had to make a lot of 301 Redirects. 'Normal' 301 redirects didn't recognize the url path of my old urls so I tried to make RewriteRules, this is what it looks like now:
Options -MultiViews
RewriteEngine On
RewriteBase /
RewriteRule ^Category http://www.example.com/category [R=301,L]
RewriteRule ^Category/Subcategory http://www.example.com/category-subcategory [R=301,L]
The first RewriteRule works, but as soon as there is a second path in the old url (the second example) the redirect will point to the main cateagy and not the subcategory. So it's basically ignoring the url paths...
Try to invert your rules, or to add a $ at the end of the first one :
RewriteRule ^Category$ http://www.example.com/category [R=301,L]
RewriteRule ^Category/Subcategory http://www.example.com/category-subcategory [R=301,L]
Explanation : Category/Subcategory is also matching the first rule, and as you have use a L flag in the first one, Apache will just use this first rule and don't bother to look further.
For general purpose solution, quoting from apache rewrite guide:
Move Homedirs to Different Webserver Description:
Many webmasters have asked for a solution to the following situation:
They wanted to redirect just all homedirs on a webserver to another webserver. They usually need such things when establishing a newer webserver which will replace the old one over time.
Solution:
The solution is trivial with mod_rewrite. On the old webserver we just
redirect all /~user/anypath URLs to http://example.com/~user/anypath.
RewriteEngine on
RewriteRule ^/~(.+) http://example.com/~$1 [R,L]
In your case URL structure has changed so ôkio's suggestion would work.

Making sure my rewrite rule is a 301 re-direct

I have the following re-write rule which directs krmmalik.com to krmmalik.com/me
How do i make sure this rule is a 301 re-direct, and if it isnt one already, how can i turn it into one?
I've tried using the mixing and matching the tips from this site
http://www.webweaver.nu/html-tips/web-redirection.shtml
as well as Google's Support Articles and existing SO questions, but not having much luck. Note the re-write rule in itself so far has been working fine.
I've also added a CNAME for "www" to "krmmalik.com" in my DNS file. Is that good enough, or do i need to add a specific 301 redirect for that as well?
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_HOST} ^(www.)?krmmalik.com$
RewriteRule ^(/)?$ me [L]
Try the following:
RewriteRule ^/?$ /me [L,R=permanent]
The R=permanent flag instructs a 301 status redirect (and you can use R=301 if you prefer, but I think that "permanent" is more readable).
Putting a forward-slash at the start of the /me target URL will tell Apache to redirect the user to the directory named "me" at the web server's public root directory. So in your case it should redirect the user to krmmalik.com/me (or www.krmmalik.com/me).
Also, you don't need to wrap the match pattern in parentheses, because you don't need to capture the slash for later use. So ^/?$ will do the job fine.

mod_rewrite redirect specific .asp pages back to original server

I need to redirect traffic for a section of a redeveloped site back to the original site with apache mod_rewrite rules. I need to redirect all requests starting with http://www.example.com/page.asp back to the original site http://www.original.com/page.asp with the query string or anything following page.asp intact.
This seems simple enough, however I have had no luck with mod_rewrite generators or documentation on the web. My latest stab at the problem looks like this:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^http://www.example.com$ [NC]
RewriteRule ^page\.asp(.*)$ http://www.original.com/page\.asp$1 [R=301,NC]
I appreciate any insight into correcting this mod_rewrite rule. Other redirects are working fine.
I was able to get the rewrite to function properly using:
RewriteRule ^/page(.+) http://www.original.com/page$1 [R=301,NC,L]
I found this apache doc helpful: Resource Moved to Another Server

Rewriting a redirected URL with mod_rewrite

Here is my setup :
I have a website located at www.cabsh.org/drupal
I want to use mod_rewrite to do 2 things :
Redirect www.cabsh.org to http://www.cabsh.org/drupal/index.php (I got this one)
Rewrite /www.cabsh.org/drupal/index.php to www.cabsh.org/site/index.php
I cannot figure how to achieve the 2nd point. I'm using .htaccess files since I cannot use the main server configuration. Can anyone help me getting this to work?
Thanks!
From what I get from your comment, you just want something like this:
RewriteEngine on
# Prevent a request directly to the /drupal folder
RewriteCond %{THE_REQUEST} ^[A-Z]+\s/drupal/
RewriteRule ^drupal/(.*)$ /site/$1 [R=301,L]
# Change a request for /site/(anything) to /drupal/(anything)
RewriteRule ^site/(.*)$ /drupal/$1
Be careful though, since Drupal (being in the Drupal folder) might generate links that point to /drupal instead of /site, which is seemingly not what you want.