libratbox/openssl: check that ECDHE is really available on redhat derivatives (closes...

diff --git a/libratbox/src/openssl.c b/libratbox/src/openssl.c
index cae15a0ad7461cc46f070f4ee6a0124d19db4781..63f016909b5ecf22a9aab5aea954229b5f0aca37 100644 (file)
--- a/libratbox/src/openssl.c
+++ b/libratbox/src/openssl.c
@@ -314,9 +314,10 @@ rb_init_ssl(void)
        /* Disable SSLv2, make the client use our settings */
        SSL_CTX_set_options(ssl_server_ctx, SSL_OP_NO_SSLv2 | SSL_OP_CIPHER_SERVER_PREFERENCE);
        SSL_CTX_set_verify(ssl_server_ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, verify_accept_all_cb);
-       
-       /* Set ECDHE on OpenSSL 1.00+ */
-       #if (OPENSSL_VERSION_NUMBER >= 0x10000000)
+
+       /* Set ECDHE on OpenSSL 1.00+, but make sure it's actually available because redhat are dicks
+          and bastardise their OpenSSL for stupid reasons... */
+       #if (OPENSSL_VERSION_NUMBER >= 0x10000000) && defined(NID_secp384r1)
                SSL_CTX_set_tmp_ecdh(ssl_server_ctx, EC_KEY_new_by_curve_name(NID_secp384r1));
        #endif