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changeset 6034:3e847964ab55

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SSL: clear protocol options. LibreSSL 2.1.1+ started to set SSL_OP_NO_SSLv3 option by default on new contexts. This makes sure to clear it to make it possible to use SSLv3 with LibreSSL if enabled in nginx config. Prodded by Kuramoto Eiji.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 23 Mar 2015 02:42:32 +0300
parents 8e66a83d16ae
children a84267233877
files src/event/ngx_event_openssl.c
diffstat 1 files changed, 8 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/src/event/ngx_event_openssl.c	Thu Mar 19 19:29:43 2015 +0300
+++ b/src/event/ngx_event_openssl.c	Mon Mar 23 02:42:32 2015 +0300
@@ -249,6 +249,12 @@
 
     SSL_CTX_set_options(ssl->ctx, SSL_OP_SINGLE_DH_USE);
 
+#ifdef SSL_CTRL_CLEAR_OPTIONS
+    /* only in 0.9.8m+ */
+    SSL_CTX_clear_options(ssl->ctx,
+                          SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
+#endif
+
     if (!(protocols & NGX_SSL_SSLv2)) {
         SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_SSLv2);
     }
@@ -259,11 +265,13 @@
         SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_TLSv1);
     }
 #ifdef SSL_OP_NO_TLSv1_1
+    SSL_CTX_clear_options(ssl->ctx, SSL_OP_NO_TLSv1_1);
     if (!(protocols & NGX_SSL_TLSv1_1)) {
         SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_TLSv1_1);
     }
 #endif
 #ifdef SSL_OP_NO_TLSv1_2
+    SSL_CTX_clear_options(ssl->ctx, SSL_OP_NO_TLSv1_2);
     if (!(protocols & NGX_SSL_TLSv1_2)) {
         SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_TLSv1_2);
     }