library/roles/nginx: Add a snippet to enable CORS.

nginx/defaults/main.yml

@@ -15,6 +15,7 @@ nginx_conf_snippets:
   - letsencrypt-proxy.conf
   - nginx-proxy-params.conf
   - nginx-server-ssl.conf
+  - nginx-cors.conf
 
 nginx_old_snippets:
   - compression.conf
@@ -55,6 +56,8 @@ nginx_proxy_send_timeout: 120s
 nginx_client_max_body_size: 32000M
 nginx_client_body_timeout: 240s
 
+nginx_cors_acl_origin: 'http?://(localhost)'
+
 # Find a set of acceptable defaults for the cache setup
 nginx_cache_enabled: False
 

nginx/templates/nginx-cors.conf.j2

@@ -0,0 +1,13 @@
+# set $cors '';
+# if ($http_origin ~* '{{ nginx_cors_acl_origin }}') {
+#     set $cors 'true';
+# }
+# if ($cors = 'true') {
+    add_header 'Access-Control-Allow-Origin' "$http_origin";
+    add_header 'Access-Control-Allow-Credentials' 'true';
+    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+    add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Mx-ReqToken,X-Requested-With';
+# }
+if ($request_method = 'OPTIONS') {
+    return 204;
+}