commit 2cc452281e1746f9c02d3c66633ce9e5bc391cae
author Daniel P. Berrange <berrange@redhat.com> Mon Mar 02 19:01:05 2015 +0000
committer Daniel P. Berrange <berrange@redhat.com> Fri Dec 18 15:02:11 2015 +0000
tree d19f09be771030e5730e821b0c1a2fb30af20016
parent 04d2529da27db512dcbd5e99d0e26d333f16efcc

ui: convert VNC server to use QIOChannelTLS

Switch VNC server over to using the QIOChannelTLS object for
the TLS session. This removes all remaining VNC specific code
for dealing with TLS handshakes.

Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

ui/vnc-ws.c

diff --git a/ui/vnc-ws.c b/ui/vnc-ws.c
index 15649dc..053beca 100644
--- a/ui/vnc-ws.c
+++ b/ui/vnc-ws.c
@@ -22,83 +22,60 @@
 #include "qemu/main-loop.h"
 #include "crypto/hash.h"
 
-static int vncws_start_tls_handshake(VncState *vs)
+static void vncws_handshake_read(VncState *vs);
+
+static void vncws_tls_handshake_done(Object *source,
+                                     Error *err,
+                                     gpointer user_data)
 {
-    Error *err = NULL;
+    VncState *vs = user_data;
 
-    if (qcrypto_tls_session_handshake(vs->tls, &err) < 0) {
-        goto error;
+    if (err) {
+        VNC_DEBUG("Handshake failed %s\n", error_get_pretty(err));
+        vnc_client_error(vs);
+    } else {
+        vs->ioc_tag = qio_channel_add_watch(
+            QIO_CHANNEL(vs->ioc), G_IO_IN, vncws_handshake_io, vs, NULL);
     }
-
-    switch (qcrypto_tls_session_get_handshake_status(vs->tls)) {
-    case QCRYPTO_TLS_HANDSHAKE_COMPLETE:
-        VNC_DEBUG("Handshake done, checking credentials\n");
-        if (qcrypto_tls_session_check_credentials(vs->tls, &err) < 0) {
-            goto error;
-        }
-        VNC_DEBUG("Client verification passed, starting TLS I/O\n");
-        if (vs->ioc_tag) {
-            g_source_remove(vs->ioc_tag);
-        }
-        vs->ioc_tag = qio_channel_add_watch(
-            vs->ioc, G_IO_IN, vncws_handshake_io, vs, NULL);
-        break;
-
-    case QCRYPTO_TLS_HANDSHAKE_RECVING:
-        VNC_DEBUG("Handshake interrupted (blocking read)\n");
-        if (vs->ioc_tag) {
-            g_source_remove(vs->ioc_tag);
-        }
-        vs->ioc_tag = qio_channel_add_watch(
-            vs->ioc, G_IO_IN, vncws_tls_handshake_io, vs, NULL);
-        break;
-
-    case QCRYPTO_TLS_HANDSHAKE_SENDING:
-        VNC_DEBUG("Handshake interrupted (blocking write)\n");
-        if (vs->ioc_tag) {
-            g_source_remove(vs->ioc_tag);
-        }
-        vs->ioc_tag = qio_channel_add_watch(
-            vs->ioc, G_IO_OUT, vncws_tls_handshake_io, vs, NULL);
-        break;
-    }
-
-    return 0;
-
- error:
-    VNC_DEBUG("Handshake failed %s\n", error_get_pretty(err));
-    error_free(err);
-    vnc_client_error(vs);
-    return -1;
 }
 
+
 gboolean vncws_tls_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
                                 GIOCondition condition G_GNUC_UNUSED,
                                 void *opaque)
 {
-    VncState *vs = (VncState *)opaque;
+    VncState *vs = opaque;
+    QIOChannelTLS *tls;
     Error *err = NULL;
 
-    vs->tls = qcrypto_tls_session_new(vs->vd->tlscreds,
-                                      NULL,
-                                      vs->vd->tlsaclname,
-                                      QCRYPTO_TLS_CREDS_ENDPOINT_SERVER,
-                                      &err);
-    if (!vs->tls) {
-        VNC_DEBUG("Failed to setup TLS %s\n",
-                  error_get_pretty(err));
+    VNC_DEBUG("TLS Websocket connection required\n");
+    if (vs->ioc_tag) {
+        g_source_remove(vs->ioc_tag);
+        vs->ioc_tag = 0;
+    }
+
+    tls = qio_channel_tls_new_server(
+        vs->ioc,
+        vs->vd->tlscreds,
+        vs->vd->tlsaclname,
+        &err);
+    if (!tls) {
+        VNC_DEBUG("Failed to setup TLS %s\n", error_get_pretty(err));
         error_free(err);
         vnc_client_error(vs);
         return TRUE;
     }
 
-    qcrypto_tls_session_set_callbacks(vs->tls,
-                                      vnc_tls_push,
-                                      vnc_tls_pull,
-                                      vs);
-
     VNC_DEBUG("Start TLS WS handshake process\n");
-    vncws_start_tls_handshake(vs);
+    object_unref(OBJECT(vs->ioc));
+    vs->ioc = QIO_CHANNEL(tls);
+    vs->tls = qio_channel_tls_get_session(tls);
+
+    qio_channel_tls_handshake(tls,
+                              vncws_tls_handshake_done,
+                              vs,
+                              NULL);
+
     return TRUE;
 }