From 7e2f9c6458f5be891fe3e31f24ed8a03e3048c83 Mon Sep 17 00:00:00 2001
From: hladu357 <ondrej.hladuvka@gmail.com>
Date: Tue, 4 Jun 2024 15:17:08 +0200
Subject: [PATCH] check if cache enabled

---
 http_key_header_module.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/http_key_header_module.c b/http_key_header_module.c
index fb71a86..72cc168 100644
--- a/http_key_header_module.c
+++ b/http_key_header_module.c
@@ -104,9 +104,10 @@ ngx_module_t ngx_http_key_header_module =
 static ngx_int_t
 ngx_http_key_header_filter(ngx_http_request_t *r )
 {
-    if(r->loc_conf != NULL) {
+    if(r->loc_conf ) {
         ngx_http_key_header_loc_conf_t *conf = ngx_http_get_module_loc_conf(r, ngx_http_key_header_module);
-        if(conf->enabled) {
+        // enabled       cahce enabled
+        if(conf->enabled && r->cache) {
             ngx_table_elt_t *h;
             h = ngx_list_push(&r->headers_out.headers);
             if(h == NULL) {
@@ -114,11 +115,14 @@ ngx_http_key_header_filter(ngx_http_request_t *r )
             }
             
             u_char hexKey[2 * NGX_HTTP_CACHE_KEY_LEN + 1];
+            memset(hexKey, 0, sizeof(hexKey));
+
             ngx_hex_dump(hexKey, r->cache->key, NGX_HTTP_CACHE_KEY_LEN);
 
             h->hash = 1;
+            h->next = NULL;
             ngx_str_set(&h->key, "X-Cache-Key");
-            ngx_str_set(&h->value, hexKey);
+            ngx_str_set(&h->value, "abcd");
         }
     }
     return ngx_http_next_header_filter(r);