Free generated supp data after handshake completion, add comment regarding use of...
[openssl.git] / apps / s_server.c
index 29189fd..44acb1e 100644 (file)
@@ -229,8 +229,10 @@ static void s_server_init(void);
 
 static const unsigned char auth_ext_data[]={TLSEXT_AUTHZDATAFORMAT_dtcp};
 
-static const unsigned char *most_recent_supplemental_data;
-static size_t most_recent_supplemental_data_length;
+static unsigned char *generated_supp_data = NULL;
+
+static unsigned char *most_recent_supplemental_data = NULL;
+static size_t most_recent_supplemental_data_length = 0;
 
 static int client_provided_server_authz = 0;
 static int client_provided_client_authz = 0;
@@ -2673,6 +2675,13 @@ static int init_ssl_connection(SSL *con)
                        i=SSL_accept(con);
                }
 #endif
+       /*handshake is complete - free the generated supp data allocated in the callback */
+       if (generated_supp_data)
+               {
+        OPENSSL_free(generated_supp_data);
+               generated_supp_data = NULL;
+               }
+
        if (i <= 0)
                {
                if (BIO_sock_should_retry(i))
@@ -3583,6 +3592,8 @@ static int authz_tlsext_generate_cb(SSL *s, unsigned short ext_type,
        {
        if (c_auth && client_provided_client_authz && client_provided_server_authz)
                {
+               /*if auth_require_reneg flag is set, only send extensions if
+                 renegotiation has occurred */
                if (!c_auth_require_reneg
                    || (c_auth_require_reneg && SSL_num_renegotiations(s)))
                        {
@@ -3612,15 +3623,16 @@ static int auth_suppdata_generate_cb(SSL *s, unsigned short supp_data_type,
                                     const unsigned char **out,
                                     unsigned short *outlen, void *arg)
        {
-       unsigned char *result;
        if (c_auth && client_provided_client_authz && client_provided_server_authz)
                {
+               /*if auth_require_reneg flag is set, only send supplemental data if
+                 renegotiation has occurred */
                if (!c_auth_require_reneg
                    || (c_auth_require_reneg && SSL_num_renegotiations(s)))
                        {
-                       result = OPENSSL_malloc(10);
-                       memcpy(result, "1234512345", 10);
-                       *out = result;
+                       generated_supp_data = OPENSSL_malloc(10);
+                       memcpy(generated_supp_data, "1234512345", 10);
+                       *out = generated_supp_data;
                        *outlen = 10;
                        return 1;
                        }