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Daniel P. Berrange 7dfbfc7927 vnc: Don't demote authentication scheme when changing password/disabling login 
Currently when disabling login in VNC, the password is cleared out and the
authentication protocol is forced to AUTH_VNC.  If you're using a stronger
authentication protocol, this has the effect of downgrading your security
protocol.

Fix this by only changing the authentication protocol if the current
authentication protocol is AUTH_NONE.  That ensures we're never downgrading.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
--
NB. This patch is derived from one posted by Anthony last year, which got
accidentally lost after Luiz took over the QMP series work

  https://lists.gnu.org/archive/html/qemu-devel/2011-09/msg00392.html

 v1 -> v2
 - Make sure to not demote when changing password (Daniel)
 v2 -> v3
 - Rebase to latest GIT master wrt QMP changes
2012-02-17 09:58:21 -06:00
..
cocoa.m cocoa: Close sheet after image file selection 2011-11-01 20:41:06 +01:00
curses_keys.h curses: Fix control-{@[\]^_} and ESC 2010-10-21 18:31:28 +02:00
curses.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
d3des.c ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
d3des.h Delete useless 'extern' qualifiers for functions 2011-01-23 16:21:20 +00:00
keymaps.c ui: Plug memory leaks on parse_keyboard_layout() error path 2011-11-11 12:49:51 -06:00
keymaps.h ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
qemu-spice.h spice: turn client_migrate_info to async 2011-10-25 14:00:53 +02:00
sdl_keysym.h ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
sdl_zoom_template.h ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
sdl_zoom.c ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
sdl_zoom.h ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
sdl.c sdl: Limit sdl_grab_end in handle_activation to Windows hosts 2012-02-01 14:45:02 -06:00
spice-core.c qom: Unify type registration 2012-02-15 09:39:21 -06:00
spice-display.c Drop unneeded pthread.h inclusions 2011-09-21 10:49:16 +01:00
spice-display.h Replace the VMSTOP macros with a proper state type 2011-09-15 16:39:32 -03:00
spice-input.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
vnc_keysym.h vnc: added missing name->keysym pairs for Polish national characters 2011-04-01 22:29:27 +02:00
vnc-auth-sasl.c ui/vnc: Convert sasl.mechlist to g_malloc() & friends 2011-11-10 12:29:50 +00:00
vnc-auth-sasl.h ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
vnc-auth-vencrypt.c Store VNC auth scheme per-client as well as per-server 2011-07-23 11:19:02 -05:00
vnc-auth-vencrypt.h ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
vnc-enc-hextile-template.h vnc: rename vnc-encoding-* vnc-enc-* 2010-07-26 17:36:13 -05:00
vnc-enc-hextile.c ui/vnc: Fix use of free() instead of g_free() 2011-11-01 16:52:05 -05:00
vnc-enc-tight.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
vnc-enc-tight.h vnc: tight add PNG encoding 2010-07-26 17:36:14 -05:00
vnc-enc-zlib.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
vnc-enc-zrle-template.c vnc: Add ZRLE and ZYWRLE encodings. 2011-02-23 16:28:28 -06:00
vnc-enc-zrle.c vnc: fix uint8_t comparisons with negative values 2011-02-23 16:28:28 -06:00
vnc-enc-zrle.h vnc: Add ZRLE and ZYWRLE encodings. 2011-02-23 16:28:28 -06:00
vnc-enc-zywrle-template.c Fix spelling in comments, documentation and messages 2011-12-14 11:09:44 +00:00
vnc-enc-zywrle.h Fix spelling in comments, documentation and messages 2011-12-14 11:09:44 +00:00
vnc-jobs-async.c qemu-thread: add API for joinable threads 2011-12-12 17:06:22 -06:00
vnc-jobs-sync.c vnc: threaded VNC server 2010-07-26 17:36:14 -05:00
vnc-jobs.h vnc: threaded VNC server 2010-07-26 17:36:14 -05:00
vnc-palette.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
vnc-palette.h vnc: palette: and fill and color calls. 2011-02-23 16:28:28 -06:00
vnc-tls.c ui/vnc: Fix use of free() instead of g_free() 2011-11-01 16:52:05 -05:00
vnc-tls.h ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
vnc.c vnc: Don't demote authentication scheme when changing password/disabling login 2012-02-17 09:58:21 -06:00
vnc.h vnc: implement shared flag handling. 2012-02-10 09:58:33 +01:00
x_keymap.c ui: move all ui components in ui/ 2010-07-26 17:35:54 -05:00
x_keymap.h Delete useless 'extern' qualifiers for functions 2011-01-23 16:21:20 +00:00