[PATCH] Stream: fixed passwords usage for certificates with variables

[Maxim Dounin]

# HG changeset patch
# User Maxim Dounin <mdou...@mdounin.ru>
# Date 1746113755 -10800
#      Thu May 01 18:35:55 2025 +0300
# Node ID 756db4ac033c5dea1a3c6478e0701115164a8c34
# Parent  6d64b685bc7fbee88e31ce54a151de0deeaabdde
Stream: fixed passwords usage for certificates with variables.

Missed in 9343:4f20c52c5f1b.  Passwords not preserved for run time could
happen to be used at run time if there are multiple server{} blocks all
using the same SSL configuration inherited from the stream{} block.

diff --git a/src/stream/ngx_stream_proxy_module.c 
b/src/stream/ngx_stream_proxy_module.c
--- a/src/stream/ngx_stream_proxy_module.c
+++ b/src/stream/ngx_stream_proxy_module.c
@@ -2261,6 +2261,19 @@ ngx_stream_proxy_set_ssl(ngx_conf_t *cf,
     ngx_pool_cleanup_t  *cln;
 
     if (pscf->ssl->ctx) {
+
+        if (pscf->ssl_certificate
+            && pscf->ssl_certificate->value.len
+            && (pscf->ssl_certificate->lengths
+                || pscf->ssl_certificate_key->lengths))
+        {
+            pscf->ssl_passwords =
+                           ngx_ssl_preserve_passwords(cf, pscf->ssl_passwords);
+            if (pscf->ssl_passwords == NULL) {
+                return NGX_ERROR;
+            }
+        }
+
         return NGX_OK;
     }