Redirect AMP files on nginx - nginx

I'm trying to make redirect on nginx but unfortunately it doesn't work.
What I'd like to achieve, it is to redirect amp files on mobile.
What I'd like to do :
from
https://www.example.com/uri-759.html
to
https://www.example.com/uri-759-amp.html
What I did as redirect
if ($mobile_redirect = perform) {
redirect ^(.*)(\.html)$ $1-amp$2 permanent;
}
what I obtain
https://www.example.com/uri-759-amp-amp-amp-amp-amp-amp-amp-amp.html
Does someone have a solution to perform this redirection ?


You can use a negative lookbehind assertion to avoid matching the rewritten URI.
For example:
rewrite ^(.*)(?<!-amp)(\.html)$ $1-amp$2 permanent;
See this document for more.

Related

Rewrite Nginx Url only on specific path

So I have a main path https://app.example.com and I want it to keep it that, way but on all https://app.expample.com/p/* paths I want it to be rewritten to a short version of the url like. How can I achieve this?
I tried
location = /p/(.*)$ {
rewrite ^ https://example.com/p/$request_uri permanent; and also return 301 https://example.com/p/$request_uri;
}
but this resulted in too many http redirects and an error

Rewrite Nginx URLs with Parameters (After a Question Mark)

I have URLS in this format:
/wiki/index.php?title=Widget
/wiki/index.php?title=Blue
/wiki/index.php?title=Red
/wiki/index.php?title=Etc
I want to be able to match any URL that has the pattern "/wiki/index.php?title=" or even just "/wiki/index.php" (but so it will pick up the above URLs with the "?") and then redirect them to simply /wiki/ (all pages that match the above pattern go to the single url /wiki/)
I used to have a Mediawiki install on the /wiki/ directory with a lot of pages in the format above. However now I am running a Wordpress install and it is using the /wiki/ directory. I don't need each rewritten URL to go to a different URL (I know that is difficult as my source URLs have parameters) but right now they all 404 and so I just want to direct to them /wiki/ at least.

Simple URL rewriting
The easiest case (rewrite all /wiki/index.php requests with any arguments) can be done by this config (inside your server block):
location = /wiki/index.php {
rewrite .* /wiki/?;
}
The '?' sign at the end of second rewrite parameter is a trick to completely remove any request arguments. Without it, request /wiki/index.php?title=Widget will be rewrited to /wiki/?title=Widget.
Rewriting only requests matching /wiki/index.php?title=... is a more complex, I don't know how to do it without if construction:
location = /wiki/index.php {
if ($request_uri ~ ^/wiki/index\.php\?title=) {
rewrite .* /wiki/?;
}
}
If you want to generate HTTP 301 or 302 redirect instead of simple URL rewriting, you can use redirect (for 301 temporary redirect) or permanent (for 302 permanent redirect) flag at the end of rewrite directive parameters (see documentation).
Rewriting URLs to individual pages
This task is not as difficult as it seems. For redirecting /wiki/index.php?title=Widget to /wiki/Widget, /wiki/index.php?title=Blue to /wiki/Blue etc. we can make use of map directive:
map $request_uri $uri_suffix {
~^/wiki/index\.php\?title=([^&]*) $1;
}
server {
...
location = /wiki/index.php {
rewrite .* /wiki/$uri_suffix?;
}
...
}
Please note that map directive must be declared outside your server configuration block!

Nginx: redirect regardless of the url structure

I recently moved a subdomain to my main domain but I also changed the url structure.
Previously I had pages like http://sub.domain.com/companies/my-company-id/year/2012/charts
When moving to the main domain, I removed all the complicated urls to juts get:
http://www.domain.com/companies/my-company
I currently have the following rule:
rewrite ^/companies/(.*)$ http://www.domain.com/companies/$1 permanent; but when someone go on a page like http://sub.domain.com/companies/my-company/2012/charts they get redirect to http://www,.domain.com/companies/my-company/2012/charts and get a 404.
I like to force a redirection to http://www,.domain.com/companies/my-company-id regardless of what's after the my-company-id

Currently the parameter $1 is having the entire URI after /companies, so you are getting redirected to the original path. You should only extract the company-id in $1.
Use this:
rewrite ^/companies/(.*)/(.*)$ http://www.domain.com/companies/$1 permanent;
Here the rest of the URI after company-id will be available in the parameter $2, which is not needed in the rewrite condition.

nginx: Redirect special characters like "%23" in URL to "#"

My nginx site has a few bad links pointing to it like this:
/some-page%23some-part
/some-page">
This is causing 404's and Google Webmaster Tools is complaining too.
The URL /some-page#some-part does get processed properly and works.
How can I get nginx to redirect the %23 in a URL to #? What about the "> junk?
The links out there cannot be changed, so I'm looking to 301 redirect them myself.
Thanks!
Edit: thanks to Deadooshka for the help. My working solution, rewrite ^(.*)\#(.*)$ /$1#$2 redirect;, is discussed within his answer's comment thread.

not tested. I'm not sure which symbols get the pattern.
rewrite ^/([^\#]+)\#([^\#]+)$ /$1#$2 redirect;
rewrite '^/([^\&]+)\&quot\;\&gt\;$' /$1 redirect;

Rewrite old image url with nginx

I have a single image that I renamed and need to redirect from the old image url to the new one my server uses nginx, I'm not having much success with the following rewrite:
rewrite ^/assets/avatar/avatar.png /assets/avatar/newavatar.png permanent;
Does someone know what is wrong?

If you want to use rewrite you need to use a full path to the new location
rewrite ^/assets/avatar/avatar.png http://example.com/assets/avatar/newavatar.png permanent;
A better way though is using a return
location /assets/avatar/avatar.png {
return 301 $scheme://example.com/assets/avatar/newavatar.png;
}
If you want to just rewrite, you need to change permanent to last or break

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