nginx. How to make a redirect provided referer and user_agent?

Question

Nginx

Good afternoon. Please
tell me How to make a redirect provided referer and user_agent?
I currently have valid_referers

valid_referers sub.test.com;
if ($invalid_referer) {
   return 301 https://test.com;
}

Is it possible to make a condition that "if the referrer is invalid and the user_agent is not safari, then the redirect"?
It is necessary to exclude the safari if the referrer is invalid.

thanks in advance

Answer 1

Can. It's just that the condition will be more spread out.

Answer 2

map "$invalid_referer;$http_user_agent" $redirect {
    "~^;"            0;
    "~^1;.* Safari/" 0;
    "~^1;"           1;
}


valid_referers sub.test.com;
if ($redirect) {
   return 301 https://test.com;
}