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wayland: verify server implements the required interface versions

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Daniel Eklöf 2019-11-03 16:17:17 +01:00
parent c409e9adf4
commit 736e07b15e
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GPG key ID: 5BBD4992C116573F
1 changed files with 47 additions and 9 deletions
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50
bar/wayland.c
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@ -340,25 +340,49 @@ static struct zxdg_output_v1_listener xdg_output_listener = {
.description = xdg_output_handle_description,
};
static bool
verify_iface_version(const char *iface, uint32_t version, uint32_t wanted)
{
if (version >= wanted)
return true;
LOG_ERR("%s: need interface version %u, but compositor only implements %u",
iface, wanted, version);
return false;
}
static void
handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version)
{
struct wayland_backend *backend = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
const uint32_t required = 4;
if (!verify_iface_version(interface, version, required))
return;
backend->compositor = wl_registry_bind(
registry, name, &wl_compositor_interface, 4);
registry, name, &wl_compositor_interface, required);
}
else if (strcmp(interface, wl_shm_interface.name) == 0) {
backend->shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
backend->shm = wl_registry_bind(
registry, name, &wl_shm_interface, required);
wl_shm_add_listener(backend->shm, &shm_listener, backend);
wl_display_roundtrip(backend->display);
}
else if (strcmp(interface, wl_output_interface.name) == 0) {
const uint32_t required = 3;
if (!verify_iface_version(interface, version, required))
return;
struct wl_output *output = wl_registry_bind(
registry, name, &wl_output_interface, 3);
registry, name, &wl_output_interface, required);
tll_push_back(backend->monitors, ((struct monitor){
.backend = backend,
@ -374,27 +398,41 @@ handle_global(void *data, struct wl_registry *registry,
*/
assert(backend->xdg_output_manager != NULL);
if (backend->xdg_output_manager != NULL) {
mon->xdg = zxdg_output_manager_v1_get_xdg_output(
backend->xdg_output_manager, mon->output);
zxdg_output_v1_add_listener(mon->xdg, &xdg_output_listener, mon);
}
wl_display_roundtrip(backend->display);
}
else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
backend->layer_shell = wl_registry_bind(
registry, name, &zwlr_layer_shell_v1_interface, 1);
registry, name, &zwlr_layer_shell_v1_interface, required);
}
else if (strcmp(interface, wl_seat_interface.name) == 0) {
backend->seat = wl_registry_bind(registry, name, &wl_seat_interface, 3);
const uint32_t required = 3;
if (!verify_iface_version(interface, version, required))
return;
backend->seat = wl_registry_bind(registry, name, &wl_seat_interface, required);
wl_seat_add_listener(backend->seat, &seat_listener, backend);
wl_display_roundtrip(backend->display);
}
else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0) {
const uint32_t required = 2;
if (!verify_iface_version(interface, version, required))
return;
backend->xdg_output_manager = wl_registry_bind(
registry, name, &zxdg_output_manager_v1_interface, 2);
registry, name, &zxdg_output_manager_v1_interface, required);
}
}