oVirt is software for managing medium-to-large scale deployments of
virtual machine guests across multiple hosts. It supports a feature
where users can authenticate with a central server and get
transparently connected to a guest system and then automatically get logged
into that guest to an associated user session.
Guests using old versions of GDM support this single-sign-on capability
by means of a greeter plugin, using the old greeter's extension
API.
This commit adds similar support to the gnome-shell based login screen.
How it works:
* The OVirtCredentialsManager singleton listens for
'org.ovirt.vdsm.Credentials.UserAuthenticated'
D-Bus signal on the system bus from the
'org.ovirt.vdsm.Credentials'
bus name. The service that provides that bus name is called
the oVirt guest agent. It is also responsible for interacting
with the the central server to get user credentials.
* This UserAuthenticated signal passes, as a parameter, the a token
which needs to be passed through to the PAM service that is specifically
set up to integrate with the oVirt authentication architecture.
The singleton object keeps the token internally so it can be queried
later on.
* The OVirtCredentialsManager emits a signal 'user-authenticated' on
it's object once the dbus signal is triggered
* When the 'user-authenticated' signal is emitted, the login screen
tells GDM to start user verification using the PAM service. The
authentication stack of the service includes a PAM module
provided by oVirt that securely retrieves user credentials
from the oVirt guest agent. The PAM module then forwards those
credentials on to other modules in the stack so, e.g.,
the user's gnome keyring can be automatically unlocked.
* In case of the screen shield being visible, it also will react on that
'user-authenticated' signal and lift the shield.
In that case the login screen will check on construction time if
the signal has already been triggered, and a token is available.
If a token is available it will immediately trigger the functionality
as described above.
Signed-off-by: Vinzenz Feenstra <evilissimo@redhat.com>
https://bugzilla.gnome.org/show_bug.cgi?id=702162
Gdk uses Xwayland, so it only sees the events we forward to X11
clients. Instead, we can use the abstraction API provided by
mutter and get the right value automatically.
Also, we need to use MetaCursorTracker to handle the cursor
visibility too.
https://bugzilla.gnome.org/show_bug.cgi?id=707467
We slide the shield over it, so the animation is rarely seen, and
since no other actor is under the lock screen, the not-cleared stage
can show through, causing weird issues when trying to blend.
https://bugzilla.gnome.org/show_bug.cgi?id=706841
We show a lightbox when we suspend, to animate the fading to black
caused by turning off the monitors, but we need to hide it when
coming back, otherwise the user is just staring at a black screen
it until he moves the mouse or presses a key.
https://bugzilla.gnome.org/show_bug.cgi?id=706654
When locking manually (or locking with an animation), fade the
screen to black after a small timeout. This provides a smoother
experience, instead of abruptly turning off the screen.
https://bugzilla.gnome.org/show_bug.cgi?id=699112
This commit detects when a user inserts a smartcard,
and then initiates user verification using the gdm-smartcard
PAM service.
Likewise, if a user removes their smartcard, password verification
(or the user list depending on auth mode and configuration) are initiated
https://bugzilla.gnome.org/show_bug.cgi?id=683437
Make the lock dialog group reactive, to intercept any events
before they go to the actors below.
In the future, we may restructure our chrome to have a clear
layer system, but for now it fixes a security issue in the lock
screen (you can see the contents of the windows by dragging
if the screen was locked with the overview active)
https://bugzilla.gnome.org/show_bug.cgi?id=705840
Showing the new message at full size marks an abrubt change and looks
bad. Instead, gradually animate from 0px to full natural height.
Includes hacks to workaround flickering scrollbars while the animation
is in progress.
https://bugzilla.gnome.org/show_bug.cgi?id=687660
If that fails (which only ever happens in initial-setup mode, which
has no unlock or login dialog), we don't want to go ahead with
whatever we were doing.
https://bugzilla.gnome.org/show_bug.cgi?id=701848
If we don't remove the animation, we might leave a pending call
to _lockScreenShown() which would confuse our state tracking into
thinking we're active when we're not.
https://bugzilla.gnome.org/show_bug.cgi?id=700901
Right now when a user types their password to unlock their session
we end up getting an unlock signal from GDM right away. We then
proceed to deactivate the screensaver before the user has a chance
to read his messages.
This commit makes sure we clear out the message queue before processing
the deactivation request.
https://bugzilla.gnome.org/show_bug.cgi?id=704347
logind sends out an "unlock" signal separately when
verification completes and we already listen for that,
so we don't need to unlock on verification-complete, too.
https://bugzilla.gnome.org/show_bug.cgi?id=704347
We can't assume "isActive implies isModal", so there is a risk
of pushing a modal that nothing else will ever pop, because we
take the early return and don't activate the user active watch.
https://bugzilla.gnome.org/show_bug.cgi?id=700901
If the drag action ends after something else has put the screen shield
into a different state we can end up in an inconsistent screen shield
state where the whole thing is empty.
https://bugzilla.gnome.org/show_bug.cgi?id=703126
Currently the clipboard's contents may leak to unauthorized parties by
pasting into the unlock dialog's password entry and unmasking the entry.
Prevent this from happening by clearing the clipboard on lock.
https://bugzilla.gnome.org/show_bug.cgi?id=698922
Upon popMode, MessageTray will try readding all notifications
to their rightful parent, so we must tell NotificationBox to
relinquish them before st_bin_set_child() fails (leaving a dangling
child pointer and crashing at the next allocation)
https://bugzilla.gnome.org/show_bug.cgi?id=698812
There's large performance issues with both the blur and desaturation
that make the screen shield hard to use on slower computers, and this
has always been a temporary stopgap until the user can pick a different
image for the lock screen.
https://bugzilla.gnome.org/show_bug.cgi?id=696322
To make sure that the screen shield is shown before suspending, we
take a logind inhibitor and release it when the screen shield is
shown. As the screen shield is not only shown on suspend, we can end
up releasing the inhibitor independently from suspending (lock, idle),
in which case the screen might not be locked when we do suspend.
To fix, only release the inhibitor after showing the screen shield
when we are about to suspend.
https://bugzilla.gnome.org/show_bug.cgi?id=693708
With fallback mode gone, we can no longer rely on gnome-screensaver
being installed. Rather than handling three different cases (GDM,
gnome-screensaver, no lock), disable the lock functionality when
not running under GDM.
https://bugzilla.gnome.org/show_bug.cgi?id=693403
Previously, we would create one StBin per monitor, but each was positioned
at 0,0 and sized as the screen, so they would overlap and draw the box shadows
on top of the other backgrounds.
Instead, we need to size appropriately the bin, and then we need to position
the actual MetaBacgroundActor at 0,0, so add a flag to BackgroundManager
for this.
Also, get rid of MetaBackgroundGroup, they do nothing because the screenshield
is not a descendant of the MetaWindowGroup and because the widget in between
blocks the propagation of the visible region. At the same time, use a
widget, not a bin, because StBin requires you to set .child, not call add_child().
https://bugzilla.gnome.org/show_bug.cgi?id=694394
St.Bin() really only expects one child at a time, and the
BackgroundManager will add two. This can cause assertion
failures when destroying one of the background actors.
https://bugzilla.gnome.org/show_bug.cgi?id=694227
This commit updates the code to use mutter's new background
api, and changes the shell's startup animation to be closer
to the mockups.
Based on initial work by Giovanni Campagna
https://bugzilla.gnome.org/show_bug.cgi?id=682429
Right now we very abruptly kill the login screen
and start the users session without any transition
out.
This commit introduces a fade out of the dialog and
panels.
https://bugzilla.gnome.org/show_bug.cgi?id=694062
StBoxLayout always fills on the orthogonal direction, so the icon
becomes distorted as the layout grows to accomodate more details.
Instead, use a bin that aligns at the start.
https://bugzilla.gnome.org/show_bug.cgi?id=693822
