How to redirect encoded url via htaccess?

Question

htaccess

There is an encoded URL where all special characters are replaced by a percent sign with a number :
site.ru/%3Fs%3Dsanivite%26post_type%3Dproduct%26type_aws%3Dtrue?_openstat=dGVzdDsxOzE7

special characters)?

Answer 1

RewriteEngine on

RewriteCond %{THE_REQUEST} ^\S+\s/%3F [NC]
RewriteRule .* /$0 [R=301,L,QSA]

The %{THE_REQUEST} variable stores the original query string in its entirety:

GET /%3Fs%3Dsanivite%26post_type%3Dproduct%26type_aws%3Dtrue?_openstat=dGVzdDsxOzE7 HTTP/1.1

The template ^\S+\s/%3Fcatches all addresses starting with /%3F
The input of the RewriteRule is a string after decoding the sequences %XX
?s=sanivite&post_type=product&type_aws=true
The QSA flag allows you not to lose _openstat=dGVzdDsxOzE7 and as a result the redirect will be to the address:

/?s=sanivite&post_type=product&type_aws=true&_openstat=dGVzdDsxOzE7