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xwayland: improve error handling

This commit is contained in:
emersion 2018-03-28 21:36:53 -04:00
parent 3effe153bc
commit 6fd50947bd
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GPG Key ID: 0FDE7BE0E88F5E48
3 changed files with 80 additions and 48 deletions
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1
include/xwayland/xwm.h
View File

@ -157,6 +157,7 @@ void xwm_selection_finish(struct wlr_xwm *xwm);
void xwm_set_seat(struct wlr_xwm *xwm, struct wlr_seat *seat);
char *xwm_get_atom_name(struct wlr_xwm *xwm, xcb_atom_t atom);
bool xwm_atoms_contains(struct wlr_xwm *xwm, xcb_atom_t *atoms,
size_t num_atoms, enum atom_name needle);

119
xwayland/selection.c
View File

@ -54,7 +54,8 @@ static void xwm_selection_send_notify(struct wlr_xwm_selection *selection,
0, // propagate
selection->request.requestor,
XCB_EVENT_MASK_NO_EVENT,
(char *)&selection_notify);
(const char *)&selection_notify);
xcb_flush(selection->xwm->xcb_conn);
}
static int xwm_selection_flush_source_data(struct wlr_xwm_selection *selection) {
@ -211,8 +212,56 @@ static void xwm_selection_source_send(struct wlr_xwm_selection *selection,
wlr_log(L_DEBUG, "not sending selection: no selection source available");
}
static struct wl_array *xwm_selection_source_get_mime_types(
struct wlr_xwm_selection *selection) {
if (selection == &selection->xwm->clipboard_selection) {
struct wlr_data_source *source =
selection->xwm->seat->selection_data_source;
if (source != NULL) {
return &source->mime_types;
}
} else if (selection == &selection->xwm->primary_selection) {
struct wlr_primary_selection_source *source =
selection->xwm->seat->primary_selection_source;
if (source != NULL) {
return &source->mime_types;
}
} else if (selection == &selection->xwm->dnd_selection) {
if (selection->xwm->seat->drag != NULL &&
selection->xwm->seat->drag->source != NULL) {
return &selection->xwm->seat->drag->source->mime_types;
}
}
return NULL;
}
static void xwm_selection_send_data(struct wlr_xwm_selection *selection,
xcb_atom_t target, const char *mime_type) {
// Check MIME type
struct wl_array *mime_types =
xwm_selection_source_get_mime_types(selection);
if (mime_types == NULL) {
wlr_log(L_ERROR, "not sending selection: no MIME type list available");
xwm_selection_send_notify(selection, XCB_ATOM_NONE);
return;
}
bool found = false;
char **mime_type_ptr;
wl_array_for_each(mime_type_ptr, mime_types) {
char *t = *mime_type_ptr;
if (strcmp(t, mime_type) == 0) {
found = true;
break;
}
}
if (!found) {
wlr_log(L_ERROR, "not sending selection: "
"requested an unsupported MIME type %s", mime_type);
xwm_selection_send_notify(selection, XCB_ATOM_NONE);
return;
}
int p[2];
if (pipe(p) == -1) {
wlr_log(L_ERROR, "pipe failed: %m");
@ -300,6 +349,8 @@ static void xwm_dnd_send_enter(struct wlr_xwm *xwm) {
data.data32[0] = xwm->dnd_selection.window;
data.data32[1] = XDND_VERSION << 24;
// If we have 3 MIME types or less, we can send them directly in the
// DND_ENTER message
size_t n = mime_types->size / sizeof(char *);
if (n <= 3) {
size_t i = 0;
@ -393,31 +444,12 @@ static void xwm_dnd_send_leave(struct wlr_xwm *xwm) {
xwm_dnd_send_event(xwm, xwm->atoms[DND_FINISHED], &data);
}*/
static struct wl_array *xwm_selection_source_get_mime_types(
struct wlr_xwm_selection *selection) {
if (selection == &selection->xwm->clipboard_selection ||
selection == &selection->xwm->dnd_selection) {
struct wlr_data_source *source =
selection->xwm->seat->selection_data_source;
if (source != NULL) {
return &source->mime_types;
}
} else if (selection == &selection->xwm->primary_selection) {
struct wlr_primary_selection_source *source =
selection->xwm->seat->primary_selection_source;
if (source != NULL) {
return &source->mime_types;
}
}
return NULL;
}
static void xwm_selection_send_targets(struct wlr_xwm_selection *selection) {
struct wlr_xwm *xwm = selection->xwm;
struct wl_array *mime_types = xwm_selection_source_get_mime_types(selection);
if (mime_types == NULL) {
wlr_log(L_DEBUG, "not sending selection targets: "
wlr_log(L_ERROR, "not sending selection targets: "
"no selection source available");
xwm_selection_send_notify(selection, XCB_ATOM_NONE);
return;
@ -493,8 +525,10 @@ static void xwm_handle_selection_request(struct wlr_xwm *xwm,
// No xwayland surface focused, deny access to clipboard
if (xwm->focus_surface == NULL && xwm->drag_focus == NULL) {
wlr_log(L_DEBUG, "denying read access to clipboard: "
"no xwayland surface focused");
char *selection_name = xwm_get_atom_name(xwm, selection->atom);
wlr_log(L_DEBUG, "denying read access to selection %u (%s): "
"no xwayland surface focused", selection->atom, selection_name);
free(selection_name);
xwm_selection_send_notify(selection, XCB_ATOM_NONE);
return;
}
@ -510,26 +544,15 @@ static void xwm_handle_selection_request(struct wlr_xwm *xwm,
xwm_selection_send_data(selection, selection_request->target,
"text/plain");
} else {
xcb_get_atom_name_cookie_t name_cookie =
xcb_get_atom_name(xwm->xcb_conn, selection_request->target);
xcb_get_atom_name_reply_t *name_reply =
xcb_get_atom_name_reply(xwm->xcb_conn, name_cookie, NULL);
if (name_reply == NULL) {
wlr_log(L_DEBUG, "not handling selection request: unknown atom");
char *mime_type = xwm_get_atom_name(xwm, selection_request->target);
if (mime_type == NULL) {
wlr_log(L_ERROR, "ignoring selection request: unknown atom");
xwm_selection_send_notify(selection, XCB_ATOM_NONE);
return;
}
size_t len = xcb_get_atom_name_name_length(name_reply);
char *mime_type = malloc((len + 1) * sizeof(char));
if (mime_type == NULL) {
free(name_reply);
return;
}
memcpy(mime_type, xcb_get_atom_name_name(name_reply), len);
mime_type[len] = '\0';
xwm_selection_send_data(selection, selection_request->target, mime_type);
xwm_selection_send_data(selection, selection_request->target,
mime_type);
free(mime_type);
free(name_reply);
}
}
@ -961,10 +984,9 @@ int xwm_handle_selection_event(struct wlr_xwm *xwm,
int xwm_handle_selection_client_message(struct wlr_xwm *xwm,
xcb_client_message_event_t *ev) {
if (ev->type == xwm->atoms[DND_STATUS]) {
struct wlr_drag *drag = xwm->drag;
if (drag == NULL) {
wlr_log(L_DEBUG, "Ignoring XdndStatus client message because "
"there's no current drag");
if (xwm->drag == NULL) {
wlr_log(L_DEBUG, "ignoring XdndStatus client message because "
"there's no drag");
return 1;
}
@ -973,9 +995,18 @@ int xwm_handle_selection_client_message(struct wlr_xwm *xwm,
bool accepted = data->data32[1] & 1;
xcb_atom_t action_atom = data->data32[4];
if (xwm->drag_focus == NULL ||
target_window != xwm->drag_focus->window_id) {
wlr_log(L_DEBUG, "ignoring XdndStatus client message because "
"it doesn't match the current drag focus window ID");
return 1;
}
enum wl_data_device_manager_dnd_action action =
data_device_manager_dnd_action_from_atom(xwm, action_atom);
struct wlr_drag *drag = xwm->drag;
assert(drag != NULL);
drag->source->accepted = accepted;
drag->source->current_dnd_action = action;
@ -1038,7 +1069,6 @@ void xwm_selection_init(struct wlr_xwm *xwm) {
&version);
selection_init(xwm, &xwm->dnd_selection, xwm->atoms[DND_SELECTION]);
wlr_log(L_DEBUG, "DND_SELECTION=%d", xwm->atoms[DND_SELECTION]);
}
void xwm_selection_finish(struct wlr_xwm *xwm) {
@ -1182,6 +1212,7 @@ static void seat_handle_start_drag(struct wl_listener *listener, void *data) {
xwm_selection_set_owner(&xwm->dnd_selection, drag != NULL);
xwm->drag = drag;
xwm->drag_focus = NULL;
if (drag != NULL) {
wl_signal_add(&drag->events.focus, &xwm->seat_drag_focus);

6
xwayland/xwm.c
View File

@ -506,7 +506,7 @@ static void read_surface_net_wm_state(struct wlr_xwm *xwm,
}
}
static char *get_atom_name(struct wlr_xwm *xwm, xcb_atom_t atom) {
char *xwm_get_atom_name(struct wlr_xwm *xwm, xcb_atom_t atom) {
xcb_get_atom_name_cookie_t name_cookie =
xcb_get_atom_name(xwm->xcb_conn, atom);
xcb_get_atom_name_reply_t *name_reply =
@ -558,7 +558,7 @@ static void read_surface_property(struct wlr_xwm *xwm,
} else if (property == xwm->atoms[MOTIF_WM_HINTS]) {
read_surface_motif_hints(xwm, xsurface, reply);
} else {
char *prop_name = get_atom_name(xwm, property);
char *prop_name = xwm_get_atom_name(xwm, property);
wlr_log(L_DEBUG, "unhandled X11 property %u (%s) for window %u",
property, prop_name, xsurface->window_id);
free(prop_name);
@ -967,7 +967,7 @@ static void xwm_handle_client_message(struct wlr_xwm *xwm,
} else if (ev->type == xwm->atoms[_NET_WM_MOVERESIZE]) {
xwm_handle_net_wm_moveresize_message(xwm, ev);
} else if (!xwm_handle_selection_client_message(xwm, ev)) {
char *type_name = get_atom_name(xwm, ev->type);
char *type_name = xwm_get_atom_name(xwm, ev->type);
wlr_log(L_DEBUG, "unhandled x11 client message %u (%s)", ev->type,
type_name);
free(type_name);