TLS: Add functions for managing cached session state

The new tls_connection_set_success_data(),
tls_connection_set_success_data_resumed(),
tls_connection_get_success_data(), and tls_connection_remove_session()
functions can be used to mark cached sessions valid and to remove
invalid cached sessions. This commit is only adding empty functions. The
actual functionality will be implemented in followup commits.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/crypto/tls.h

@@ -575,4 +575,14 @@ void tls_connection_set_test_flags(struct tls_connection *conn, u32 flags);
 
 int tls_get_library_version(char *buf, size_t buf_len);
 
+void tls_connection_set_success_data(struct tls_connection *conn,
+				     struct wpabuf *data);
+
+void tls_connection_set_success_data_resumed(struct tls_connection *conn);
+
+const struct wpabuf *
+tls_connection_get_success_data(struct tls_connection *conn);
+
+void tls_connection_remove_session(struct tls_connection *conn);
+
 #endif /* TLS_H */

src/crypto/tls_gnutls.c

@@ -1498,3 +1498,26 @@ int tls_get_library_version(char *buf, size_t buf_len)
 	return os_snprintf(buf, buf_len, "GnuTLS build=%s run=%s",
 			   GNUTLS_VERSION, gnutls_check_version(NULL));
 }
+
+
+void tls_connection_set_success_data(struct tls_connection *conn,
+				     struct wpabuf *data)
+{
+}
+
+
+void tls_connection_set_success_data_resumed(struct tls_connection *conn)
+{
+}
+
+
+const struct wpabuf *
+tls_connection_get_success_data(struct tls_connection *conn)
+{
+	return NULL;
+}
+
+
+void tls_connection_remove_session(struct tls_connection *conn)
+{
+}

src/crypto/tls_internal.c

@@ -708,3 +708,26 @@ int tls_get_library_version(char *buf, size_t buf_len)
 {
 	return os_snprintf(buf, buf_len, "internal");
 }
+
+
+void tls_connection_set_success_data(struct tls_connection *conn,
+				     struct wpabuf *data)
+{
+}
+
+
+void tls_connection_set_success_data_resumed(struct tls_connection *conn)
+{
+}
+
+
+const struct wpabuf *
+tls_connection_get_success_data(struct tls_connection *conn)
+{
+	return NULL;
+}
+
+
+void tls_connection_remove_session(struct tls_connection *conn)
+{
+}

src/crypto/tls_none.c

@@ -193,3 +193,26 @@ int tls_get_library_version(char *buf, size_t buf_len)
 {
 	return os_snprintf(buf, buf_len, "none");
 }
+
+
+void tls_connection_set_success_data(struct tls_connection *conn,
+				     struct wpabuf *data)
+{
+}
+
+
+void tls_connection_set_success_data_resumed(struct tls_connection *conn)
+{
+}
+
+
+const struct wpabuf *
+tls_connection_get_success_data(struct tls_connection *conn)
+{
+	return NULL;
+}
+
+
+void tls_connection_remove_session(struct tls_connection *conn)
+{
+}

src/crypto/tls_openssl.c

@@ -4013,3 +4013,26 @@ int tls_get_library_version(char *buf, size_t buf_len)
 			   OPENSSL_VERSION_TEXT,
 			   SSLeay_version(SSLEAY_VERSION));
 }
+
+
+void tls_connection_set_success_data(struct tls_connection *conn,
+				     struct wpabuf *data)
+{
+}
+
+
+void tls_connection_set_success_data_resumed(struct tls_connection *conn)
+{
+}
+
+
+const struct wpabuf *
+tls_connection_get_success_data(struct tls_connection *conn)
+{
+	return NULL;
+}
+
+
+void tls_connection_remove_session(struct tls_connection *conn)
+{
+}