drmath/nginx.conf at main · shivaram19/drmath · GitHub

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# HTTPS config — deployed AFTER SSL certificates exist
# Run scripts/init-ssl.sh to obtain certs and swap this into place

server {
    listen 80;
    server_name drmath.trelolabs.com;

    # ACME challenge for Let's Encrypt renewal
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    # Redirect all HTTP to HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl http2;
    server_name drmath.trelolabs.com;

    # Dedicated logs for DPDPA-aligned retention (see scripts/logrotate-drmath.conf)
    access_log /var/log/nginx/drmath-access.log combined;
    error_log /var/log/nginx/drmath-error.log;

    ssl_certificate /etc/letsencrypt/live/drmath.trelolabs.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/drmath.trelolabs.com/privkey.pem;

    # SSL security hardening
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;

    # HSTS — force HTTPS for 6 months
    add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload" always;

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "geolocation=(), microphone=(), camera()" always;

    # Hide nginx version
    server_tokens off;

    # Direct-download APK artifacts
    location /mathwise.apk {
        alias /usr/share/nginx/html/static/mathwise.apk;
        add_header Content-Disposition "attachment; filename=mathwise.apk";
    }

    location /voter-survey.apk {
        alias /usr/share/nginx/html/static/voter-survey.apk;
        add_header Content-Disposition "attachment; filename=voter-survey.apk";
    }

    # PWA landing page for nursing module
    location = /nursing {
        return 301 /nursing/;
    }

    location /nursing/ {
        alias /usr/share/nginx/html/nursing/;
        expires 7d;
        add_header Cache-Control "public, must-revalidate";
        try_files $uri $uri.html $uri/ /nursing/index.html;
    }

    # Static files served directly by nginx
    location /static/ {
        alias /usr/share/nginx/html/static/;
        expires 7d;
        add_header Cache-Control "public, immutable";
    }

    # Rate limiting for API endpoints
    location /api/ {
        limit_req zone=drmath_api burst=10 nodelay;
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # Rate limiting for general traffic
    location / {
        limit_req zone=drmath burst=20 nodelay;
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

# Redirect www to non-www (HTTPS)
server {
    listen 80;
    server_name www.drmath.trelolabs.com;
    return 301 https://drmath.trelolabs.com$request_uri;
}