static int protocol_client_vencrypt_auth(VncState *vs, uint8_t *data, size_t len) { int auth = read_u32(data, 0); if (auth != vs->vd->subauth) { VNC_DEBUG("Rejecting auth %d\n", auth); vnc_write_u8(vs, 0); /* Reject auth */ vnc_flush(vs); vnc_client_error(vs); } else { VNC_DEBUG("Accepting auth %d, setting up TLS for handshake\n", auth); vnc_write_u8(vs, 1); /* Accept auth */ vnc_flush(vs); if (vnc_tls_client_setup(vs, NEED_X509_AUTH(vs)) < 0) { VNC_DEBUG("Failed to setup TLS\n"); return 0; } VNC_DEBUG("Start TLS VeNCrypt handshake process\n"); if (vnc_start_vencrypt_handshake(vs) < 0) { VNC_DEBUG("Failed to start TLS handshake\n"); return 0; } } return 0; }