ansible-roles/nginx/templates/nginx-cors.conf.j2

{% if nginx_cors_extended_rules %}
if ($request_method = 'OPTIONS') {
{% if nginx_cors_limit_origin %}
    add_header 'Access-Control-Allow-Origin' '{{ nginx_cors_acl_origin | default("$http_origin") }}';
{% else %}
    add_header 'Access-Control-Allow-Origin' '*';
{% endif %}
    add_header 'Access-Control-Allow-Credentials' 'true';
    add_header 'Access-Control-Allow-Methods' '{{ nginx_cors_allowed_methods }}';
    #
    # Custom headers and headers various browsers *should* be OK with but aren't
    #
    add_header 'Access-Control-Allow-Headers' '{{ nginx_cors_allowed_headers }}';
    #
    # Tell client that this pre-flight info is valid for 20 days
    #
    add_header 'Access-Control-Max-Age' 1728000;
    add_header 'Content-Type' 'text/plain charset=UTF-8';
    add_header 'Content-Length' 0;
    return 204;
}
if ($request_method = 'POST') {
{% if nginx_cors_limit_origin %}
    add_header 'Access-Control-Allow-Origin' '{{ nginx_cors_acl_origin | default("$http_origin") }}';
    add_header 'Access-Control-Allow-Credentials' 'true';
{% else %}
    add_header 'Access-Control-Allow-Origin' '*';
{% endif %}
    add_header 'Access-Control-Allow-Methods' '{{ nginx_cors_allowed_methods }}';
    add_header 'Access-Control-Allow-Headers' '{{ nginx_cors_allowed_headers }}';
    add_header 'Access-Control-Expose-Headers' '{{ nginx_cors_allowed_headers }}';
}
if ($request_method = 'GET') {
{% if nginx_cors_limit_origin %}
    add_header 'Access-Control-Allow-Origin' '{{ nginx_cors_acl_origin | default("$http_origin") }}';
    add_header 'Access-Control-Allow-Credentials' 'true';
{% else %}
    add_header 'Access-Control-Allow-Origin' '*';
{% endif %}
    add_header 'Access-Control-Allow-Methods' '{{ nginx_cors_allowed_methods }}';
    add_header 'Access-Control-Allow-Headers' '{{ nginx_cors_allowed_headers }}';
    add_header 'Access-Control-Expose-Headers' '{{ nginx_cors_allowed_headers }}';
}
{% else %}
{% if nginx_cors_limit_origin %}
add_header 'Access-Control-Allow-Origin' '{{ nginx_cors_acl_origin | default("$http_origin") }}';
{% else %}
add_header 'Access-Control-Allow-Origin' '*';
{% endif %}
if ($request_method = OPTIONS ) {
    return 204;
}
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' '{{ nginx_cors_allowed_methods }}';
add_header 'Access-Control-Allow-Headers' '{{ nginx_cors_allowed_headers }}';
add_header 'Access-Control-Expose-Headers' '{{ nginx_cors_allowed_headers }}';
{% endif %}
{% endif %}