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");
vs->tls.wiremode = VNC_WIREMODE_TLS;
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
start_auth_vencrypt_subauth(vs);
return 0;
}
static void vnc_tls_handshake_done(Object *source,
Error *err,
gpointer user_data)
{
VncState *vs = user_data;
if (err) {
VNC_DEBUG("Handshake failed %s\n",
error_get_pretty(err));
vnc_client_error(vs);
} else {
vs->ioc_tag = qio_channel_add_watch(
vs->ioc, G_IO_IN | G_IO_OUT, vnc_client_io, vs, NULL);
start_auth_vencrypt_subauth(vs);
}
}
static void vnc_tls_handshake_done(QIOTask *task,
gpointer user_data)
{
VncState *vs = user_data;
Error *err = NULL;
if (qio_task_propagate_error(task, &err)) {
trace_vnc_auth_fail(vs, vs->auth, "TLS handshake failed",
error_get_pretty(err));
vnc_client_error(vs);
error_free(err);
} else {
if (vs->ioc_tag) {
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
vs->ioc, G_IO_IN | G_IO_OUT, vnc_client_io, vs, NULL);
start_auth_vencrypt_subauth(vs);
}
}
