* THE SOFTWARE.
*/
+#include "qemu/osdep.h"
#include "vnc.h"
+#include "qapi/error.h"
#include "qemu/main-loop.h"
+#include "trace.h"
static void start_auth_vencrypt_subauth(VncState *vs)
{
switch (vs->subauth) {
case VNC_AUTH_VENCRYPT_TLSNONE:
case VNC_AUTH_VENCRYPT_X509NONE:
- VNC_DEBUG("Accept TLS auth none\n");
vnc_write_u32(vs, 0); /* Accept auth completion */
start_client_init(vs);
break;
case VNC_AUTH_VENCRYPT_TLSVNC:
case VNC_AUTH_VENCRYPT_X509VNC:
- VNC_DEBUG("Start TLS auth VNC\n");
start_auth_vnc(vs);
break;
#ifdef CONFIG_VNC_SASL
case VNC_AUTH_VENCRYPT_TLSSASL:
case VNC_AUTH_VENCRYPT_X509SASL:
- VNC_DEBUG("Start TLS auth SASL\n");
start_auth_sasl(vs);
break;
#endif /* CONFIG_VNC_SASL */
default: /* Should not be possible, but just in case */
- VNC_DEBUG("Reject subauth %d server bug\n", vs->auth);
+ trace_vnc_auth_fail(vs, vs->auth, "Unhandled VeNCrypt subauth", "");
vnc_write_u8(vs, 1);
if (vs->minor >= 8) {
static const char err[] = "Unsupported authentication type";
}
}
-static void vnc_tls_handshake_io(void *opaque);
-
-static int vnc_start_vencrypt_handshake(VncState *vs)
+static void vnc_tls_handshake_done(QIOTask *task,
+ gpointer user_data)
{
- 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;
- }
+ VncState *vs = user_data;
+ Error *err = NULL;
- 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");
+ 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);
}
-
- VNC_DEBUG("Handshake done, switching to TLS data mode\n");
- qemu_set_fd_handler(vs->csock, vnc_client_read, vnc_client_write, vs);
-
- start_auth_vencrypt_subauth(vs);
-
- return 0;
}
-static void vnc_tls_handshake_io(void *opaque)
-{
- VncState *vs = (VncState *)opaque;
-
- VNC_DEBUG("Handshake IO continue\n");
- vnc_start_vencrypt_handshake(vs);
-}
-
-
-
-#define NEED_X509_AUTH(vs) \
- ((vs)->subauth == VNC_AUTH_VENCRYPT_X509NONE || \
- (vs)->subauth == VNC_AUTH_VENCRYPT_X509VNC || \
- (vs)->subauth == VNC_AUTH_VENCRYPT_X509PLAIN || \
- (vs)->subauth == VNC_AUTH_VENCRYPT_X509SASL)
-
static int protocol_client_vencrypt_auth(VncState *vs, uint8_t *data, size_t len)
{
int auth = read_u32(data, 0);
+ trace_vnc_auth_vencrypt_subauth(vs, auth);
if (auth != vs->subauth) {
- VNC_DEBUG("Rejecting auth %d\n", auth);
+ trace_vnc_auth_fail(vs, vs->auth, "Unsupported sub-auth version", "");
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);
+ Error *err = NULL;
+ QIOChannelTLS *tls;
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;
+ if (vs->ioc_tag) {
+ g_source_remove(vs->ioc_tag);
+ vs->ioc_tag = 0;
}
- VNC_DEBUG("Start TLS VeNCrypt handshake process\n");
- if (vnc_start_vencrypt_handshake(vs) < 0) {
- VNC_DEBUG("Failed to start TLS handshake\n");
+ tls = qio_channel_tls_new_server(
+ vs->ioc,
+ vs->vd->tlscreds,
+ vs->vd->tlsaclname,
+ &err);
+ if (!tls) {
+ trace_vnc_auth_fail(vs, vs->auth, "TLS setup failed",
+ error_get_pretty(err));
+ error_free(err);
+ vnc_client_error(vs);
return 0;
}
+
+ qio_channel_set_name(QIO_CHANNEL(tls), "vnc-server-tls");
+ object_unref(OBJECT(vs->ioc));
+ vs->ioc = QIO_CHANNEL(tls);
+ trace_vnc_client_io_wrap(vs, vs->ioc, "tls");
+ vs->tls = qio_channel_tls_get_session(tls);
+
+ qio_channel_tls_handshake(tls,
+ vnc_tls_handshake_done,
+ vs,
+ NULL);
}
return 0;
}
static int protocol_client_vencrypt_init(VncState *vs, uint8_t *data, size_t len)
{
+ trace_vnc_auth_vencrypt_version(vs, (int)data[0], (int)data[1]);
if (data[0] != 0 ||
data[1] != 2) {
- VNC_DEBUG("Unsupported VeNCrypt protocol %d.%d\n", (int)data[0], (int)data[1]);
+ trace_vnc_auth_fail(vs, vs->auth, "Unsupported version", "");
vnc_write_u8(vs, 1); /* Reject version */
vnc_flush(vs);
vnc_client_error(vs);
} else {
- VNC_DEBUG("Sending allowed auth %d\n", vs->subauth);
vnc_write_u8(vs, 0); /* Accept version */
vnc_write_u8(vs, 1); /* Number of sub-auths */
vnc_write_u32(vs, vs->subauth); /* The supported auth */
projects / qemu.git / blobdiff