[PATCH 2 of 5] Free nginx: changed server name

[Maxim Dounin]

# HG changeset patch
# User Maxim Dounin <mdounin at mdounin.ru>
# Date 1708301526 -10800
#      Mon Feb 19 03:12:06 2024 +0300
# Node ID 23f109f0faccc22772d3bb939ad8d3f23c603194
# Parent  985b0bda403cd49580dc6bf080868f04b0ff0849
Free nginx: changed server name.

diff --git a/src/core/nginx.h b/src/core/nginx.h
--- a/src/core/nginx.h
+++ b/src/core/nginx.h
@@ -11,7 +11,9 @@
 
 #define nginx_version      1025004
 #define NGINX_VERSION      "1.25.4"
-#define NGINX_VER          "nginx/" NGINX_VERSION
+
+#define NGINX_NAME         "freenginx"
+#define NGINX_VER          NGINX_NAME "/" NGINX_VERSION
 
 #ifdef NGX_BUILD
 #define NGINX_VER_BUILD    NGINX_VER " (" NGX_BUILD ")"
diff --git a/src/http/v2/ngx_http_v2_filter_module.c b/src/http/v2/ngx_http_v2_filter_module.c
--- a/src/http/v2/ngx_http_v2_filter_module.c
+++ b/src/http/v2/ngx_http_v2_filter_module.c
@@ -115,12 +115,14 @@ ngx_http_v2_header_filter(ngx_http_reque
     ngx_http_core_srv_conf_t  *cscf;
     u_char                     addr[NGX_SOCKADDR_STRLEN];
 
-    static const u_char nginx[5] = "\x84\xaa\x63\x55\xe7";
 #if (NGX_HTTP_GZIP)
     static const u_char accept_encoding[12] =
         "\x8b\x84\x84\x2d\x69\x5b\x05\x44\x3c\x86\xaa\x6f";
 #endif
 
+    static size_t nginx_name_len = ngx_http_v2_literal_size(NGINX_NAME);
+    static u_char nginx_name[ngx_http_v2_literal_size(NGINX_VER)];
+
     static size_t nginx_ver_len = ngx_http_v2_literal_size(NGINX_VER);
     static u_char nginx_ver[ngx_http_v2_literal_size(NGINX_VER)];
 
@@ -226,7 +228,7 @@ ngx_http_v2_header_filter(ngx_http_reque
             len += 1 + nginx_ver_build_len;
 
         } else {
-            len += 1 + sizeof(nginx);
+            len += 1 + nginx_name_len;
         }
     }
 
@@ -434,8 +436,9 @@ ngx_http_v2_header_filter(ngx_http_reque
                            NGINX_VER_BUILD);
 
         } else {
-            ngx_log_debug0(NGX_LOG_DEBUG_HTTP, fc->log, 0,
-                           "http2 output header: \"server: nginx\"");
+            ngx_log_debug1(NGX_LOG_DEBUG_HTTP, fc->log, 0,
+                           "http2 output header: \"server: %s\"",
+                           NGINX_NAME);
         }
 
         *pos++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_SERVER_INDEX);
@@ -460,7 +463,13 @@ ngx_http_v2_header_filter(ngx_http_reque
             pos = ngx_cpymem(pos, nginx_ver_build, nginx_ver_build_len);
 
         } else {
-            pos = ngx_cpymem(pos, nginx, sizeof(nginx));
+            if (nginx_name[0] == '\0') {
+                p = ngx_http_v2_write_value(nginx_name, (u_char *) NGINX_NAME,
+                                            sizeof(NGINX_NAME) - 1, tmp);
+                nginx_name_len = p - nginx_name;
+            }
+
+            pos = ngx_cpymem(pos, nginx_name, nginx_name_len);
         }
     }
 
diff --git a/src/http/v3/ngx_http_v3_filter_module.c b/src/http/v3/ngx_http_v3_filter_module.c
--- a/src/http/v3/ngx_http_v3_filter_module.c
+++ b/src/http/v3/ngx_http_v3_filter_module.c
@@ -166,7 +166,7 @@ ngx_http_v3_header_filter(ngx_http_reque
             n = sizeof(NGINX_VER_BUILD) - 1;
 
         } else {
-            n = sizeof("nginx") - 1;
+            n = sizeof(NGINX_NAME) - 1;
         }
 
         len += ngx_http_v3_encode_field_lri(NULL, 0,
@@ -349,8 +349,8 @@ ngx_http_v3_header_filter(ngx_http_reque
             n = sizeof(NGINX_VER_BUILD) - 1;
 
         } else {
-            p = (u_char *) "nginx";
-            n = sizeof("nginx") - 1;
+            p = (u_char *) NGINX_NAME;
+            n = sizeof(NGINX_NAME) - 1;
         }
 
         ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,