nginx url rewrite regex with special characters

Question

How to write a regex that matches a path node with reserved characters like '+','-' ? for example:

https://e.example.com/foo+/bar/file/test.txt need to be re-written as https://e.example.com/bar/file/test.txt

I tried rewrite ^/foo+(/.*)$ break; but it couldn't match the string.

Any suggestions?

score 0 · Accepted Answer · answered Mar 08 '23 at 18:01

In nginx rewrite directive uses the normalized URI for matching. Normalized URI does not include query arguments or indexed search arguments.

You might be able to use a map here:

map $request_uri $filefromarg {
    ^[^+]*\+(.*)$ $1;
    default $request_uri;
}

And in the server block you would have:

try_files $filefromarg $uri =404;

The map takes $request_uri, which contains the full path to resource and query arguments. The first line regular expression captures everything after + sign and sets it to $filefromarg variable.

Then, in the try_files section that is used as the path to check for resource to serve.

nginx url rewrite regex with special characters

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