# For more information on configuration, see:
worker_shutdown_timeout 30s;
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;
}

http {
    # ==== 安全加固：按客户端 IP 限流 zone（必须位于 http 上下文）====
    # ⛔ 本文件是线上 /etc/nginx/nginx.conf 的仓库镜像（与线上逐字节一致；改动后请双向核对 md5）。
    # ⛔ 三条硬性约束（任一条违反都会让整站起不来或行为异常，历史已各踩过一次）：
    #   1. limit_req_zone 必须写在 http{} 内 —— conf.d/*.conf 的 location 引用了这些 zone，
    #      引用未定义 zone 会让 nginx -t 直接失败；
    #   2. ⛔ stream 转发已移除（2026-09-20）：原 MySQL 3306 / Redis 6379 反代（本文件下方那个）
    #      已整块删除，服务器不再监听库端口；开发机连库走 SSH 隧道（tools/dev-tunnel.ps1）。
    #      不要在**本文件或 conf.d/*.conf** 里重新加 stream{}（全配置只能有一个，
    #      写重复会报 stream directive is duplicate，整站不可用）。
    #   3. worker_shutdown_timeout 30s 不要调短 —— 调短会中断正在传输的响应。
    limit_req_zone $binary_remote_addr zone=auth_login_zone:10m rate=10r/m;
    limit_req_zone $binary_remote_addr zone=auth_challenge_zone:10m rate=20r/m;
    limit_req_zone $binary_remote_addr zone=uploads_zone:10m rate=120r/m;
    limit_req_zone $binary_remote_addr zone=scan_abstract_zone:10m rate=30r/m;
    limit_req_status 429;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 4096;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;

    server {
        listen       80;
        listen       [::]:80;
        server_name  _;
        root         /usr/share/nginx/html;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        error_page 404 /404.html;
        location = /404.html {
        }

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
        }
    }

# Settings for a TLS enabled server.
#
#    server {
#        listen       443 ssl http2;
#        listen       [::]:443 ssl http2;
#        server_name  _;
#        root         /usr/share/nginx/html;
#
#        ssl_certificate "/etc/pki/nginx/server.crt";
#        ssl_certificate_key "/etc/pki/nginx/private/server.key";
#        ssl_session_cache shared:SSL:1m;
#        ssl_session_timeout  10m;
#        ssl_ciphers PROFILE=SYSTEM;
#        ssl_prefer_server_ciphers on;
#
#        # Load configuration files for the default server block.
#        include /etc/nginx/default.d/*.conf;
#
#        error_page 404 /404.html;
#            location = /40x.html {
#        }
#
#        error_page 500 502 503 504 /50x.html;
#            location = /50x.html {
#        }
#    }

}