static int vnc_start_vencrypt_handshake(struct VncState *vs) { int ret; if ((ret = gnutls_handshake(vs->tls.session)) < 0) { if (!gnutls_error_is_fatal(ret)) { VNC_DEBUG("Handshake interrupted (blocking)\n"); if (!gnutls_record_get_direction(vs->tls.session)) qemu_set_fd_handler(vs->csock, vnc_tls_handshake_io, NULL, vs); else qemu_set_fd_handler(vs->csock, NULL, vnc_tls_handshake_io, vs); return 0; } VNC_DEBUG("Handshake failed %s\n", gnutls_strerror(ret)); vnc_client_error(vs); return -1; } if (vs->vd->tls.x509verify) { if (vnc_tls_validate_certificate(vs) < 0) { VNC_DEBUG("Client verification failed\n"); vnc_client_error(vs); return -1; } else { VNC_DEBUG("Client verification passed\n"); } } VNC_DEBUG("Handshake done, switching to TLS data mode\n"); qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs); start_auth_vencrypt_subauth(vs); return 0; }