Nginx重写：如何在扩展文件后删除所有内容

Question

There are a lot of bad request of images and files on my site... but with names close from the real name. basically, if i have a file called example.gif, there is a call to example.gifzerzer. What i want is to rewrite to keep the name and the extension, but nothing after it.

I did create a map file with rewrite (it's working for example the tmp.php to index.php rewrite below except the rule for removing everything after extension).

Here is what i've done so far :

/(.+\.(bmp|gif|ico|jpeg|jpg|png|svg)).+ /$1;

this is not working neither

/(.+\.(bmp|gif|ico|jpeg|jpg|png|svg)).+? /$1;

my map :

map $request_uri $redirect_uri {
  default "";
  /(.+\.(bmp|gif|ico|jpeg|jpg|png|svg)).+ /$1;
  /tmp.php /index.php;
}

i was under Apache before migrating to Nginx and this was working :

RewriteRule ^([a-z0-9\-/_]*\.(bmp|gif|ico|jpeg|jpg|png|svg)).+ /$1 [R=301,L]

Answer 1

I did that rewrite that is working, when put in the server section, but then it is not included in the map.

location ~ (.+\.(bmp|gif|ico|jpeg|jpg|png|svg)).+$ {
    return 301 /$1;
}

if someone has an idea why, or can confirm that i'm doing it right ?