Include auth credentials in 'info vnc' ("Daniel P. Berrange")

This patch extends the 'info vnc' monitor output to include information
about the VNC client authentication credentials.

For clients authenticated using SASL, this will output the username.

For clients authenticated using x509 certificates, this will output
the x509 distinguished name.

Auth can be stacked, so both username & x509 dname may be shown.

    Server:
         address: 0.0.0.0:5902
            auth: vencrypt+x509+sasl
    Client:
         address: 10.33.6.67:38621
      x509 dname: C=GB,O=ACME,L=London,ST=London,CN=localhost
        username: admin
    Client:
         address: 10.33.6.63:38620
      x509 dname: C=GB,O=ACME,L=London,ST=London,CN=localhost
        username: admin

 vnc-tls.c |   17 +++++++++++++++++
 vnc-tls.h |    3 +++
 vnc.c     |   19 +++++++++++++++++--
 3 files changed, 37 insertions(+), 2 deletions(-)

   Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6725 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/vnc.c b/vnc.c
index 074238790b2d03ee861a3a3f508a75a62725141e..b8d16d06704169ec741edf50e71c70cd338851b8 100644 (file)
--- a/vnc.c
+++ b/vnc.c
@@ -156,6 +156,21 @@ static void do_info_vnc_client(Monitor *mon, VncState *client)
     monitor_printf(mon, "Client:\n");
     monitor_printf(mon, "%s", clientAddr);
     free(clientAddr);
+
+#ifdef CONFIG_VNC_TLS
+    if (client->tls.session &&
+       client->tls.dname)
+       monitor_printf(mon, "  x509 dname: %s\n", client->tls.dname);
+    else
+       monitor_printf(mon, "  x509 dname: none\n");
+#endif
+#ifdef CONFIG_VNC_SASL
+    if (client->sasl.conn &&
+       client->sasl.username)
+       monitor_printf(mon, "    username: %s\n", client->sasl.username);
+    else
+       monitor_printf(mon, "    username: none\n");
+#endif
 }
 
 void do_info_vnc(Monitor *mon)
@@ -1824,7 +1839,7 @@ static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
     /* We only advertise 1 auth scheme at a time, so client
      * must pick the one we sent. Verify this */
     if (data[0] != vs->vd->auth) { /* Reject auth */
-       VNC_DEBUG("Reject auth %d\n", (int)data[0]);
+       VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]);
        vnc_write_u32(vs, 1);
        if (vs->minor >= 8) {
            static const char err[] = "Authentication failed";
@@ -1864,7 +1879,7 @@ static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
 #endif /* CONFIG_VNC_SASL */
 
        default: /* Should not be possible, but just in case */
-           VNC_DEBUG("Reject auth %d\n", vs->vd->auth);
+           VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
            vnc_write_u8(vs, 1);
            if (vs->minor >= 8) {
                static const char err[] = "Authentication failed";