如何在 Nginx 中向查询字符串添加元标记？

Question

我的网站遭受了大规模内部搜索垃圾邮件攻击。

数以万计的垃圾链接已被 Google 编入索引，我正尝试在我的搜索结果页面中添加 Noindex 和 Nofollow 标签。

我的搜索结果页面使用?s=查询字符串。

https://example.com/?s={search_term_string}

我尝试了下面的代码，但是它不起作用。

    location / {
        try_files $uri $uri/ /index.php?$args;                      
        if ($arg_s) {

                    add_header X-Robots-Tag "noindex, nofollow, nosnippet, noarchive";
        }
 }

服务器块

        #세오토토
fastcgi_cache_path /var/cache/nginx/example levels=1:2 keys_zone=example:200m inactive=60m use_temp_path=off;   

add_header Fastcgi-Cache $upstream_cache_status;



server {
    listen 80;
    server_name  example.net www.example.net;
    location /{
            return 301 https://$host$request_uri;
        }

}

server {
    listen 443 ssl http2;
    server_name  example.net www.example.net;
    root /var/www/example;
    index index.php;


    ssl_certificate /etc/letsencrypt/live/example.net-0001/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.net-0001/privkey.pem;
    ssl_dhparam /etc/ssl/certs/dhparam.pem;
    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_trusted_certificate /etc/letsencrypt/live/example.net/fullchain.pem;
    #resolver 8.8.8.8 8.8.4.4 valid=300s;
    #resolver_timeout 5s;


    # Set caches, protocols, and accepted ciphers. This config will
    # merit an A+ SSL Labs score.
    ssl_session_cache shared:SSL:10m;
    ssl_buffer_size 4k;
    ssl_ecdh_curve secp384r1;
    ssl_session_timeout 10m;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5';
    error_log /var/log/nginx/example.error.log crit;
    
    
    set $skip_cache 0;

    # POST requests and urls with a query string should always go to PHP
    if ($request_method = POST) {
        set $skip_cache 1;
                       set $skip_reason "POST";
    }   
    if ($query_string != "") {
        set $skip_cache 1;
                       set $skip_reason "QUERY_STRING";
    }   

    # Don’t cache uris containing the following segments
    if ($request_uri ~* "/wp-admin/|/xmlrpc.php|wp-.*.php|/feed/|index.php|sitemap(_index)?.xml") {
        set $skip_cache 1;
    }   

    # Don’t use the cache for logged in users or recent commenters
    if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in") {
        set $skip_cache 1;
    }
    
    

    # Block dot file (.htaccess .htpasswd .svn .git .env and so on.)
    location ~ /\. {
        deny all;
    }
 
    # Block (log file, binary, certificate, shell script, sql dump file) access.
    location ~* \.(log|binary|pem|enc|crt|conf|cnf|sql|sh|key|yml|lock)$ {
        deny all;
    }
 
    # Block access
    location ~* (composer\.json|composer\.lock|composer\.phar|contributing\.md|license\.txt|readme\.rst|readme\.md|readme\.txt|copyright|artisan|gulpfile\.js|package\.json|phpunit\.xml|access_log|error_log|gruntfile\.js)$ {
        deny all;
    }
     location = /xmlrpc.php {
        deny all;
        access_log off;
        log_not_found off;
        return 444;
    }
    location = /favicon.ico {
        log_not_found off;
        access_log off;
    }
 
    location ~* \.(ogg|ogv|svg|svgz|eot|otf|woff|woff2|ttf|m4a|mp4|ttf|rss|atom|jpe?g|gif|cur|heic|png|tiff|ico|webm|mp3|aac|tgz|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf|swf|webp)$ {
        access_log off;
        log_not_found off;
        expires max;
    }
 
 
    # Block .php file inside upload folder. uploads(wp), files(drupal), data(gnuboard).
    location ~* /(?:uploads|default/files|data)/.*\.php$ {
        deny all;
    }
 
 # START Nginx Rewrites for Rank Math Sitemaps
    rewrite ^/sitemap_index.xml$ /index.php?sitemap=1 last;
    rewrite ^/([^/]+?)-sitemap([0-9]+)?.xml$ /index.php?sitemap=$1&sitemap_n=$2 last;


    location / {
        try_files $uri $uri/ /index.php?$args;        
        
                
        if ($arg_s) {
                    add_header X-Robots-Tag "noindex, nofollow, nosnippet, noarchive";
        }
        
    }

    # Allow Lets Encrypt Domain Validation Program
    location ^~ /.well-known/acme-challenge/ {
        allow all;
    }


    location ~ \.php$ {
         include snippets/fastcgi-php.conf;
         fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
         fastcgi_cache_bypass $skip_cache;
        fastcgi_buffer_size 16k; 
        # should be enough for most PHP websites, or adjust as above
        fastcgi_busy_buffers_size 24k; 
        # essentially, proxy_buffer_size + 2 small buffers of 4k
        fastcgi_buffers 64 4k; 
        # should be enough for most PHP websites, adjust as above to get an accurate value
        fastcgi_no_cache $skip_cache;
        fastcgi_cache example;
        fastcgi_cache_valid 60m;
        add_header WP-Bullet-Skip $skip_reason;
        add_header X-FastCGI-Cache $upstream_cache_status;
    }
    

    
      # configuration
   include optimization/*.conf;
}

优化文件夹仅包含与 Gzip 和缓存相关的文件。

有人可以告诉我哪里需要修改吗？

Answer 1

您应该能够使用以下内容map：

map $arg_s $robot_header {
    ~^.+$ "noindex, nofollow";
    default "";
}

server {
    add_header X-Robots-Tag $robot_header;
}