From 663bc4a3816c27a6c8f39fa366d23b48f8d988ed Mon Sep 17 00:00:00 2001
From: tonyrewin <anton.rewin@gmail.com>
Date: Fri, 25 Nov 2022 13:38:08 +0300
Subject: [PATCH] fix-cors-back

---
 nginx.conf.sigil | 42 +++++++++++++++++++++++++++++++-----------
 1 file changed, 31 insertions(+), 11 deletions(-)

diff --git a/nginx.conf.sigil b/nginx.conf.sigil
index f106270f..aa224351 100644
--- a/nginx.conf.sigil
+++ b/nginx.conf.sigil
@@ -113,18 +113,38 @@ server {
     proxy_set_header X-Request-Start $msec;
     {{ if $.PROXY_X_FORWARDED_SSL }}proxy_set_header X-Forwarded-Ssl {{ $.PROXY_X_FORWARDED_SSL }};{{ end }}
 
-      add_header 'Access-Control-Allow-Origin' '$allow_origin' always;
-      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
-      add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
-      add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
-      add_header 'Access-Control-Allow-Credentials' 'true' always;
+    if ($request_method = 'OPTIONS') {
+        add_header 'Access-Control-Allow-Origin' '$allow_origin' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+        #
+        # Custom headers and headers various browsers *should* be OK with but aren't
+        #
+        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
+        add_header 'Access-Control-Allow-Credentials' 'true';
+        #
+        # 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 ($request_method = 'OPTIONS') {
-          add_header 'Access-Control-Max-Age' 1728000;
-          add_header 'Content-Type' 'text/plain; charset=utf-8';
-          add_header 'Content-Length' 0;
-          return 204;
-      }
+     if ($request_method = 'POST') {
+        add_header 'Access-Control-Allow-Origin' '$allow_origin' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+        add_header 'Access-Control-Allow-Credentials' 'true' always;
+     }
+
+     if ($request_method = 'GET') {
+        add_header 'Access-Control-Allow-Origin' '$allow_origin' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+        add_header 'Access-Control-Allow-Credentials' 'true' always;
+     }
   }
 
   {{ if $.CLIENT_MAX_BODY_SIZE }}client_max_body_size {{ $.CLIENT_MAX_BODY_SIZE }};{{ end }}