Commit Graph

42 Commits

Author SHA1 Message Date
Manuel Stoeckl ded441ffd5 wlr_seat: Fix edge cases with serial validation 2019-06-30 15:01:05 -04:00
Manuel Stoeckl edb30a6828 Implement serial validation for selection requests
This change tracks, for each wlr_seat_client, the most recent serial
numbers which were sent to the client. When the client makes a
selection request, wlroots now verifies that the serial number
associated with the selection request was actually provided to that
specific client. This ensures that the client that was most
recently interacted with always has priority for its copy selection
requests, and that no other clients can incorrectly use a larger serial
value and "steal" the role of having the copy selection.

Also, the code used to determine when a given selection is superseded
by a newer request uses < instead of <= to allow clients to make
multiple selection requests with the same serial number and have the
last one hold.

To limit memory use, a ring buffer is used to store runs of sequential
serial numbers, and all serial numbers earlier than the start of the
ring buffer are assumed to be valid. Faking very old serials is
unlikely to be disruptive.

Assuming all clients are correctly written, the only additional
constraint which this patch should impose is that serial numbers
are now bound to seats: clients may not receive a serial number
from an input event on one seat and then use that to request
copy-selection on another seat.
2019-06-30 15:01:05 -04:00
Ashkan Kiani 06a13203dd Use a set to track pointer button state.
In addition to `button_count`, we keep track of the current buttons
pressed just as in `wlr_keyboard`.

Add `set_add` and `set_remove` to assist with this. These functions can
only be used with values greater than 0 (such as the button/key masks
for keyboards and pointers).

Partially addresses:
- https://github.com/swaywm/wlroots/issues/1716
- https://github.com/swaywm/wlroots/issues/1593
2019-06-16 00:59:53 +03:00
Simon Ser a656e486f4 seat: fallback to v6 if libwayland 1.17 isn't available
See https://github.com/swaywm/wlroots/pull/1675#issuecomment-487300445
2019-04-27 11:26:34 -06:00
Scott Anderson a671fc51d2 Advertise wl_seat version 7
This does not require any code changes, as we already copy the keymap
data separately for each client.

For details, see 905c0a341d
2019-04-26 07:57:37 -06:00
emersion 30d3426164 seat: add debug logs when validating grab serials
Makes it easier to debug when something goes wrong, e.g. button_count stuck
to 2 because the compositor ate a button release event.
2019-03-04 21:27:14 -07:00
Ian Fan 2e1dd4ae36 seat: fix remaining wlr_button_state enum rename 2019-03-01 21:49:04 +01:00
emersion e8f012c993 seat: only store serial if pressing a button
The grab serial can be used to start a pointer grab. A button pressed event
should be used for this purpose.

Thus, we should only save the grab serial if it's the first button pressed
event we send. This commit makes it so the serial is not saved if a button is
released while another button is still pressed.
2019-03-01 12:36:19 -07:00
emersion 2fde5c95d8 seat: use wlr_button_state enum instead of uint32_t 2019-03-01 12:36:03 -07:00
emersion 4135fafecd seat: guard against button count corruption
This is still a compositor bug, and bad events will be sent to clients. We'll
need to track each button separately to handle this in wlroots.
2019-02-28 23:00:57 -05:00
emersion 6291e84532
data-device: refactor wlr_drag 2019-02-20 18:42:29 +01:00
emersion d6de329d98
seat: don't send motion if pointer hasn't moved 2019-01-30 15:24:17 +01:00
emersion 5de26ad8ed
pointer: add a frame event
Frame events group logically connected pointer events. It makes sense to make
the backend responsible for sending frame events, since once the events are
split (ie. once the frame events are stripped) it's not easy to figure out
which events belongs to which frame again.

This is also how Weston handles frame events.

Fixes https://github.com/swaywm/wlroots/issues/1468
2019-01-26 11:04:05 +01:00
emersion a1f9d7ad9e
data-device: keep track of wlr_data_offer in wlr_seat lists 2019-01-24 12:18:41 +01:00
emersion 3f82eb1853
data-device: make device inert when seat is destroyed 2019-01-24 12:18:39 +01:00
emersion 9d6cb85b2d
seat: simplify data source destroy 2019-01-24 12:18:00 +01:00
emersion 0040f7089f
data-device: unexport wlr_seat_client_send_selection 2019-01-24 12:15:18 +01:00
emersion 1150ff13ce
data-device: make sources inert, rename cancel to destroy 2019-01-24 12:12:55 +01:00
emersion 4cb0697e57 data-device, primary-selection: add request_set_selection
This makes compositors able to block and/or customize set_selection requests
coming from clients. For instance, it's possible for a compositor to disable
rich selection content (by removing all MIME types except text/plain). This
commit implements the design proposed in [1].

Two new events are added to wlr_seat: request_set_selection and
request_set_primary_selection. Compositors need to listen to these events and
either destroy the source or effectively set the selection.

Fixes https://github.com/swaywm/wlroots/issues/1138

[1]: https://github.com/swaywm/wlroots/issues/1367#issuecomment-442403454
2019-01-24 11:38:23 +01:00
emersion 06467d2e12
primary-selection: add a serial argument
The serial needs to be bumped when X11 clients set the selection, otherwise
some Wayland clients (e.g. GTK) will overwrite it when they gain focus.
2019-01-21 19:23:40 +01:00
emersion 9f0720c03a
primary-selection: introduce wlr_primary_selection_source
This is a common interface that can be used for all primary selection
protocols, as discussed in [1]. A new function wlr_seat_set_primary_selection
is added to set the primary selection for all protocols.

The seat now owns again the source, and resets the selection to NULL when
destroyed.

[1]: https://github.com/swaywm/wlroots/issues/1367#issuecomment-442403454
2018-11-29 19:40:28 +01:00
emersion f001f98cef
gtk-primary-selection: refactor everything, untie from seat
This commits completely refactors wlr_gtk_primary_selection. The goal is to
remove gtk-primary-selection state from the seat and better handle inert
resources where it makes sense.

wlr_seat_client.primary_selection_devices has been removed and replaced by
wlr_gtk_primary_selection_device. This allows us to make offers inert when the
current selection is replaced.

wlr_seat_set_primary_selection has been removed because it relied on wlr_seat
instead of wlr_gtk_primary_selection_device_manager. A new function,
wlr_gtk_primary_selection_device_manager_set_selection (candidate for the
longest function name in wlroots) has been added. It doesn't take a serial
anymore as serial checking only makes sense for set_selection requests coming
from Wayland clients (serial checking is now done in the Wayland interface
implementation).

Since wlr_gtk_primary_selection_device_manager is now required to set the
selection, a new function wlr_xwayland_set_gtk_primary_selection_device_manager
(candidate number two for longest function name) has been added.

Devices are now made inert when the seat goes away.

Future work includes removing the last primary selection bits from the seat,
mainly wlr_seat.primary_selection_source and wlr_seat.events.primary_selection,
replacing those with new fields in wlr_gtk_primary_selection_device. Or maybe
we could keep those in the seat and replace them with a re-usable interface
(for future zwp_primary_selection_v1 support). We need to think how we'll sync
these three protocols (GTK, X11 and wayland-protocols).

See https://github.com/swaywm/wlroots/issues/1388
2018-11-27 18:57:26 +01:00
emersion 811a4d997b
Rename wlr_primary_selection to wlr_gtk_primary_selection 2018-11-23 11:58:56 +01:00
emersion 346ec21c4c
util: use shm_open for in-memory files
shm_open is a POSIX function creating an in-memory file. Using it simplifies
the code and removes the dependency on XDG_RUNTIME_DIR. The only downside is
that we need to generate a random name for the shm file.
2018-10-28 22:39:54 +01:00
Drew DeVault 5e9959daaa
Merge pull request #852 from Laaas/master
Implement pointer-constraints-unstable-v1 protocol
2018-09-27 05:57:43 -05:00
emersion fadbdcd13c seat: remove unused keyboard focus_change event 2018-09-27 12:21:30 +02:00
random human 40a43003a1
Send unique keymap file descriptors
To prevent wl_keyboard keymap being written to by clients, use a unique
file descriptor for each wl_keyboard resource.

Reference: weston, commit 76829fc4eaea329d2a525c3978271e13bd76c078
2018-09-18 13:58:36 +05:30
Las d446c53fe1 Make (wlr_)seat_client_from_pointer_resource public 2018-09-18 10:14:33 +02:00
Las 252bcce2f3 Add focus change event for seats 2018-09-18 10:14:33 +02:00
Dorota Czaplejewicz 2929f0f8dd wlr_input_device: fix keyboard destruction
After destroying a keyboard input device, seat's listeners could still be pointing to destroyed wlr_input_device signals. This patch makes sure the references are removed while the input device is being destroyed.
2018-08-22 14:43:29 +01:00
Markus Ongyerth 9a6f77fc2c tablet-v2: fix merge commits and test again
There were a few issues after rebase, that the merge algorithm didn't
throw at my face:

wlr_output did a check on the actual role, not a string anymore, so that
had to go to allow tablet-v2 to set cursor surfaces.
A few L_DEBUG/L_ERRORs were still around
There was a user-after-free in tablet-group free()ing, probably after
insufficient testing from a previous feedback pass
2018-07-14 10:29:22 +02:00
Drew DeVault c0b4217fce
Merge pull request #1116 from emersion/surface-role
surface: replace wlr_surface_set_role_committed with wlr_surface_role
2018-07-11 15:27:42 -07:00
emersion 7cbef15206
util: add wlr_ prefix to log symbols 2018-07-09 22:49:54 +01:00
emersion deeca53e33
Rename wl_resources to resource, wl_global to global 2018-07-08 19:21:31 +01:00
emersion 33db4263a0
surface: replace wlr_surface_set_role_committed with wlr_surface_role 2018-07-07 22:45:16 +01:00
Dominique Martinet 48e8da851d wlr_seat destroy: fix use-after-free when destroying clients
wl_resource_for_each_safe isn't safe to use here because it accesses
the list's head memory one last time at the end of the loop. Work
around this by breaking out early.

==19880==ERROR: AddressSanitizer: heap-use-after-free on address 0x60d0000e6368 at pc 0x7fab68619de2 bp 0x7ffd5c91cee0 sp 0x7ffd5c91ced0
READ of size 8 at 0x60d0000e6368 thread T0
    #0 0x7fab68619de1 in wlr_seat_destroy ../types/seat/wlr_seat.c:179
    #1 0x7fab68619fb9 in handle_display_destroy ../types/seat/wlr_seat.c:196
    #2 0x7fab688e4f8f in wl_priv_signal_emit src/wayland-server.c:2024
    #3 0x7fab688e56ca in wl_display_destroy src/wayland-server.c:1092
    #4 0x40c11e in server_fini ../sway/server.c:138
    #5 0x40b1a8 in main ../sway/main.c:438
    #6 0x7fab67b5e18a in __libc_start_main ../csu/libc-start.c:308
    #7 0x409359 in _start (/opt/wayland/bin/sway+0x409359)

0x60d0000e6368 is located 24 bytes inside of 144-byte region [0x60d0000e6350,0x60d0000e63e0)
freed by thread T0 here:
    #0 0x7fab6a7d6880 in __interceptor_free (/lib64/libasan.so.5+0xee880)
    #1 0x7fab68619805 in seat_client_handle_resource_destroy ../types/seat/wlr_seat.c:97
    #2 0x7fab688e5025 in destroy_resource src/wayland-server.c:688

previously allocated by thread T0 here:
    #0 0x7fab6a7d6e50 in calloc (/lib64/libasan.so.5+0xeee50)
    #1 0x7fab686198df in seat_handle_bind ../types/seat/wlr_seat.c:127
    #2 0x7fab6530503d in ffi_call_unix64 (/lib64/libffi.so.6+0x603d)
2018-07-04 14:50:14 +09:00
Dominique Martinet 9ddc2f39d0 wlr_seat destroy: fix use-after-free after primary selection source cancel
the primary_selection_source_destroy list points to memory freed by
that cancel callback, so remove from list before freeing
2018-07-01 21:04:43 +09:00
Dominique Martinet 51b9883ea0 seat: allow clients to bind to seat multiple times
This lets clients bind to a seat multiple times by re-using the existing
wlr_seat_client whenever a duplicate request happens.
Previously, an independant wlr_seat_client would be created and only
events from one would be processed.

Fixes #1023.
2018-06-04 22:31:36 +09:00
emersion db84379242
Send axis source event 2018-05-12 13:53:21 +01:00
emersion 0b58579564
Add support for discrete axis values 2018-05-12 13:34:58 +01:00
emersion d136026a2c
seat: implement inert seat resources 2018-05-03 22:03:44 +01:00
emersion 2cff6dbd63
seat: split into multiple files 2018-05-03 10:30:47 +01:00