# Security headers configuration for Nginx
# Generated by Ansible

# 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;

# Content Security Policy (CSP)
add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' *.wordpress.org *.wp.com *.gravatar.com; style-src 'self' 'unsafe-inline' fonts.googleapis.com; font-src 'self' fonts.gstatic.com; img-src 'self' data: *.wordpress.org *.wp.com *.gravatar.com; connect-src 'self'; frame-src 'self' *.youtube.com *.vimeo.com; object-src 'none';" always;

# HSTS (HTTP Strict Transport Security)
{% if enable_ssl is defined and enable_ssl %}
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
{% endif %}

# Hide Nginx version
server_tokens off;

# Limit request size
client_max_body_size 64M;
client_body_buffer_size 128k;

# Rate limiting zones (defined in main nginx.conf)
# limit_req_zone $binary_remote_addr zone=login:10m rate=1r/m;
# limit_req_zone $binary_remote_addr zone=admin:10m rate=5r/m;
# limit_req_zone $binary_remote_addr zone=api:10m rate=10r/m;

# Security-related timeouts
client_body_timeout 10s;
client_header_timeout 10s;
keepalive_timeout 65s;
send_timeout 10s;

# Buffer overflow protection
client_body_buffer_size 1k;
client_header_buffer_size 1k;
large_client_header_buffers 2 1k;