Allow duplicate certs in ssl_build_cert_chain

diff --git a/ssl/ssl_cert.c b/ssl/ssl_cert.c
index fd59158128cfc44a43c04e3e290ce43b6cae41e0..09ea611d8a9abcf44f4dff0565bf44fab8b825c7 100644 (file)
--- a/ssl/ssl_cert.c
+++ b/ssl/ssl_cert.c
@@ -1192,6 +1192,7 @@ int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags)
        STACK_OF(X509) *chain = NULL, *untrusted = NULL;
        X509 *x;
        int i, rv = 0;
+       unsigned long error;
 
        if (!cpk->x509)
                {
@@ -1208,11 +1209,23 @@ int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags)
                        {
                        x = sk_X509_value(cpk->chain, i);
                        if (!X509_STORE_add_cert(chain_store, x))
-                               goto err;
+                               {
+                               error = ERR_peek_last_error();
+                               if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
+                                   ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
+                                       goto err;
+                               ERR_clear_error();
+                               }
                        }
                /* Add EE cert too: it might be self signed */
                if (!X509_STORE_add_cert(chain_store, cpk->x509))
-                       goto err;
+                       {
+                       error = ERR_peek_last_error();
+                       if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
+                           ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
+                               goto err;
+                       ERR_clear_error();
+                       }
                }
        else
                {