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selection: allows using a wrapper source to filter data

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1. Added support for intercepting clipboard selection operations.
2. Wraps data sources to control data provision based on client PID.
3. Added wlr_data_receiver to data source's send to identify the
recipient.
4. Includes new example "clipboard-control.c" to illustrate clipboard
permission management.
5. Added PID and client members to data source and receiver for access
control.
This commit is contained in:
JiDe Zhang 2025-09-19 15:58:58 +08:00
parent 90f9f59041
commit c3d3e6f8bb
18 changed files with 2723 additions and 108 deletions
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68
xwayland/selection/selection.c
View file

@ -3,12 +3,58 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wayland-server-protocol.h>
#include <wlr/types/wlr_data_device.h>
#include <wlr/util/log.h>
#include <xcb/xfixes.h>
#include <xcb/res.h>
#include "xwayland/selection.h"
#include "xwayland/xwm.h"
/* Get X11 window PID using XRes extension */
pid_t get_x11_window_pid(xcb_connection_t *conn, xcb_window_t window) {
if (!conn || window == XCB_WINDOW_NONE) {
return 0;
}
// Check if XRes extension is available
xcb_query_extension_cookie_t ext_cookie = xcb_query_extension(conn,
strlen("X-Resource"), "X-Resource");
xcb_query_extension_reply_t *ext_reply = xcb_query_extension_reply(conn, ext_cookie, NULL);
if (!ext_reply || !ext_reply->present) {
free(ext_reply);
return 0;
}
free(ext_reply);
// Create client ID spec for the window
xcb_res_client_id_spec_t spec;
spec.client = window;
spec.mask = XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID;
// Query client IDs for the window
xcb_res_query_client_ids_cookie_t cookie = xcb_res_query_client_ids(conn, 1, &spec);
xcb_res_query_client_ids_reply_t *reply = xcb_res_query_client_ids_reply(conn, cookie, NULL);
if (!reply) {
return 0;
}
pid_t pid = 0;
xcb_res_client_id_value_iterator_t iter = xcb_res_query_client_ids_ids_iterator(reply);
for (; iter.rem; xcb_res_client_id_value_next(&iter)) {
if (iter.data->spec.mask & XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID) {
uint32_t *value = xcb_res_client_id_value_value(iter.data);
if (value && iter.data->length >= sizeof(uint32_t)) {
pid = *value;
break;
}
}
}
free(reply);
return pid;
}
void xwm_selection_transfer_remove_event_source(
struct wlr_xwm_selection_transfer *transfer) {
if (transfer->event_source != NULL) {
@ -39,26 +85,6 @@ void xwm_selection_transfer_init(struct wlr_xwm_selection_transfer *transfer,
};
}
void xwm_selection_transfer_destroy(
struct wlr_xwm_selection_transfer *transfer) {
if (!transfer) {
return;
}
xwm_selection_transfer_destroy_property_reply(transfer);
xwm_selection_transfer_remove_event_source(transfer);
xwm_selection_transfer_close_wl_client_fd(transfer);
if (transfer->incoming_window) {
struct wlr_xwm *xwm = transfer->selection->xwm;
xcb_destroy_window(xwm->xcb_conn, transfer->incoming_window);
xwm_schedule_flush(xwm);
}
wl_list_remove(&transfer->link);
free(transfer);
}
xcb_atom_t xwm_mime_type_to_atom(struct wlr_xwm *xwm, char *mime_type) {
if (strcmp(mime_type, "text/plain;charset=utf-8") == 0) {
return xwm->atoms[UTF8_STRING];
@ -256,7 +282,7 @@ void xwm_selection_finish(struct wlr_xwm_selection *selection) {
struct wlr_xwm_selection_transfer *incoming;
wl_list_for_each_safe(incoming, tmp, &selection->incoming, link) {
xwm_selection_transfer_destroy(incoming);
xwm_selection_transfer_destroy_incoming(incoming);
}
xcb_destroy_window(selection->xwm->xcb_conn, selection->window);