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Posted to dev@httpd.apache.org by Ruediger Pluem <rp...@apache.org> on 2025/11/07 15:31:44 UTC
Re: svn commit: r1929580 - httpd/httpd/trunk/modules/ssl
On 11/7/25 1:39 PM, jorton@apache.org wrote:
> Author: jorton
> Date: Fri Nov 7 12:39:45 2025
> New Revision: 1929580
>
> Log:
> mod_ssl: Keep existing flags when calling SSL_set_shutdown()
>
> Preserve existing flags (SSL_RECEIVED_SHUTDOWN or SSL_SENT_SHUTDOWN) when
> calling SSL_set_shutdown().
>
> For abortive or unclean shutdowns, additionally call SSL_set_quiet_shutdown().
>
> Submitted by: Michael Kaufmann <mail michael-kaufmann.ch>
> Github: closes #560
>
> Modified:
> httpd/httpd/trunk/modules/ssl/ssl_engine_io.c
>
> Modified: httpd/httpd/trunk/modules/ssl/ssl_engine_io.c
> ==============================================================================
> --- httpd/httpd/trunk/modules/ssl/ssl_engine_io.c Fri Nov 7 12:10:02 2025 (r1929579)
> +++ httpd/httpd/trunk/modules/ssl/ssl_engine_io.c Fri Nov 7 12:39:45 2025 (r1929580)
> @@ -1031,6 +1031,7 @@ static void ssl_filter_io_shutdown(ssl_f
> SSL *ssl = filter_ctx->pssl;
> const char *type = "";
> SSLConnRec *sslconn = myConnConfig(c);
> + int quiet_shutdown;
> int shutdown_type;
> int loglevel = APLOG_DEBUG;
> const char *logno;
> @@ -1076,6 +1077,7 @@ static void ssl_filter_io_shutdown(ssl_f
> * to force the type of handshake via SetEnvIf directive
> */
> if (abortive) {
> + quiet_shutdown = 1;
> shutdown_type = SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN;
> type = "abortive";
> logno = APLOGNO(01998);
> @@ -1085,6 +1087,7 @@ static void ssl_filter_io_shutdown(ssl_f
> case SSL_SHUTDOWN_TYPE_UNCLEAN:
> /* perform no close notify handshake at all
> (violates the SSL/TLS standard!) */
> + quiet_shutdown = 1;
> shutdown_type = SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN;
> type = "unclean";
> logno = APLOGNO(01999);
> @@ -1092,7 +1095,8 @@ static void ssl_filter_io_shutdown(ssl_f
> case SSL_SHUTDOWN_TYPE_ACCURATE:
> /* send close notify and wait for clients close notify
> (standard compliant, but usually causes connection hangs) */
> - shutdown_type = 0;
> + quiet_shutdown = 0;
> + shutdown_type = SSL_get_shutdown(ssl);
> type = "accurate";
> logno = APLOGNO(02000);
> break;
> @@ -1103,12 +1107,16 @@ static void ssl_filter_io_shutdown(ssl_f
> */
> /* send close notify, but don't wait for clients close notify
> (standard compliant and safe, so it's the DEFAULT!) */
> - shutdown_type = SSL_RECEIVED_SHUTDOWN;
> + quiet_shutdown = 0;
> + shutdown_type = SSL_get_shutdown(ssl) | SSL_RECEIVED_SHUTDOWN;
> type = "standard";
> logno = APLOGNO(02001);
> break;
> }
> (
> + if (quiet_shutdown) {
> + SSL_set_quiet_shutdown(ssl, 1);
I am bit confused from studying the man page for SSL_set_quiet_shutdown.
Isn't the above the same as SSL_set_shutdown(ssl, SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN) ?
If not, what is the difference?
> + }
> SSL_set_shutdown(ssl, shutdown_type);
> modssl_smart_shutdown(ssl);
>
>
Regards
Rüdiger