qemu-kvm/0075-vnc-call-sasl_server_i...

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From dbf0257cf3587d5580765cbd2040f370820fb5e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Tue, 2 Oct 2018 12:34:03 +0100
Subject: vnc: call sasl_server_init() only when required
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20181002123403.20747-2-marcandre.lureau@redhat.com>
Patchwork-id: 82356
O-Subject: [RHEL8/rhel qemu-kvm PATCH 1/1] vnc: call sasl_server_init() only when required
Bugzilla: 1609327
RH-Acked-by: Daniel P. Berrange <berrange@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
VNC server is calling sasl_server_init() during startup of QEMU, even
if SASL auth has not been enabled.
This may create undesirable warnings like "Could not find keytab file:
/etc/qemu/krb5.tab" when the user didn't configure SASL on host and
started VNC server.
Instead, only initialize SASL when needed. Note that HMP/QMP "change
vnc" calls vnc_display_open() again, which will initialize SASL if
needed.
Fix assignment in if condition, while touching this code.
Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1609327
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20180907063634.359-1-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit b5dc0d7d565048fcf2767060261d8385805aced1)
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1609327
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=18601393
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
Conflicts:
ui/vnc.c
Due to "qemu"->"qemu-kvm" rename.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
ui/vnc.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/ui/vnc.c b/ui/vnc.c
index 050c421..b3fe7d7 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -3878,9 +3878,6 @@ void vnc_display_open(const char *id, Error **errp)
bool reverse = false;
const char *credid;
bool sasl = false;
-#ifdef CONFIG_VNC_SASL
- int saslErr;
-#endif
int acl = 0;
int lock_key_sync = 1;
int key_delay_ms;
@@ -4054,10 +4051,14 @@ void vnc_display_open(const char *id, Error **errp)
trace_vnc_auth_init(vd, 1, vd->ws_auth, vd->ws_subauth);
#ifdef CONFIG_VNC_SASL
- if ((saslErr = sasl_server_init(NULL, "qemu-kvm")) != SASL_OK) {
- error_setg(errp, "Failed to initialize SASL auth: %s",
- sasl_errstring(saslErr, NULL, NULL));
- goto fail;
+ if (sasl) {
+ int saslErr = sasl_server_init(NULL, "qemu-kvm");
+
+ if (saslErr != SASL_OK) {
+ error_setg(errp, "Failed to initialize SASL auth: %s",
+ sasl_errstring(saslErr, NULL, NULL));
+ goto fail;
+ }
}
#endif
vd->lock_key_sync = lock_key_sync;
--
1.8.3.1