diff options
| -rw-r--r-- | include/xwayland/selection.h | 72 | ||||
| -rw-r--r-- | include/xwayland/xwm.h | 52 | ||||
| -rw-r--r-- | xwayland/meson.build | 5 | ||||
| -rw-r--r-- | xwayland/selection.c | 1483 | ||||
| -rw-r--r-- | xwayland/selection/dnd.c | 340 | ||||
| -rw-r--r-- | xwayland/selection/incoming.c | 461 | ||||
| -rw-r--r-- | xwayland/selection/outgoing.c | 420 | ||||
| -rw-r--r-- | xwayland/selection/selection.c | 319 | ||||
| -rw-r--r-- | xwayland/xwm.c | 4 |
9 files changed, 1626 insertions, 1530 deletions
diff --git a/include/xwayland/selection.h b/include/xwayland/selection.h new file mode 100644 index 00000000..bb3a894d --- /dev/null +++ b/include/xwayland/selection.h @@ -0,0 +1,72 @@ +#ifndef XWAYLAND_SELECTION_H +#define XWAYLAND_SELECTION_H + +#include <xcb/xfixes.h> + +#define INCR_CHUNK_SIZE (64 * 1024) + +#define XDND_VERSION 5 + +struct wlr_xwm_selection; + +struct wlr_xwm_selection_transfer { + struct wlr_xwm_selection *selection; + + bool incr; + bool flush_property_on_delete; + bool property_set; + struct wl_array source_data; + int source_fd; + struct wl_event_source *source; + + // when sending to x11 + xcb_selection_request_event_t request; + struct wl_list outgoing_link; + + // when receiving from x11 + int property_start; + xcb_get_property_reply_t *property_reply; +}; + +struct wlr_xwm_selection { + struct wlr_xwm *xwm; + xcb_atom_t atom; + xcb_window_t window; + xcb_window_t owner; + xcb_timestamp_t timestamp; + + struct wlr_xwm_selection_transfer incoming; + struct wl_list outgoing; +}; + +void xwm_selection_transfer_remove_source( + struct wlr_xwm_selection_transfer *transfer); +void xwm_selection_transfer_close_source_fd( + struct wlr_xwm_selection_transfer *transfer); +void xwm_selection_transfer_destroy_property_reply( + struct wlr_xwm_selection_transfer *transfer); + +xcb_atom_t xwm_mime_type_to_atom(struct wlr_xwm *xwm, char *mime_type); +char *xwm_mime_type_from_atom(struct wlr_xwm *xwm, xcb_atom_t atom); +struct wlr_xwm_selection *xwm_get_selection(struct wlr_xwm *xwm, + xcb_atom_t selection_atom); + +void xwm_send_incr_chunk(struct wlr_xwm_selection_transfer *transfer); +void xwm_handle_selection_request(struct wlr_xwm *xwm, + xcb_selection_request_event_t *req); + +void xwm_get_incr_chunk(struct wlr_xwm_selection_transfer *transfer); +void xwm_handle_selection_notify(struct wlr_xwm *xwm, + xcb_selection_notify_event_t *event); +int xwm_handle_xfixes_selection_notify(struct wlr_xwm *xwm, + xcb_xfixes_selection_notify_event_t *event); +bool wlr_data_source_is_xwayland_data_source(struct wlr_data_source *wlr_source); +bool wlr_primary_selection_source_is_xwayland_primary_selection_source( + struct wlr_primary_selection_source *wlr_source); + +void xwm_seat_handle_start_drag(struct wlr_xwm *xwm, struct wlr_drag *drag); + +void xwm_selection_init(struct wlr_xwm *xwm); +void xwm_selection_finish(struct wlr_xwm *xwm); + +#endif diff --git a/include/xwayland/xwm.h b/include/xwayland/xwm.h index c5b1af7e..662d00af 100644 --- a/include/xwayland/xwm.h +++ b/include/xwayland/xwm.h @@ -5,13 +5,18 @@ #include <wlr/config.h> #include <wlr/xwayland.h> #include <xcb/render.h> - #ifdef WLR_HAS_XCB_ICCCM - #include <xcb/xcb_icccm.h> +#include <xcb/xcb_icccm.h> #endif #ifdef WLR_HAS_XCB_ERRORS - #include <xcb/xcb_errors.h> +#include <xcb/xcb_errors.h> #endif +#include "xwayland/selection.h" + +/* This is in xcb/xcb_event.h, but pulling xcb-util just for a constant + * others redefine anyway is meh + */ +#define XCB_EVENT_RESPONSE_TYPE_MASK (0x7f) enum atom_name { WL_SURFACE_ID, @@ -79,40 +84,6 @@ enum net_wm_state_action { NET_WM_STATE_TOGGLE = 2, }; -#define XDND_VERSION 5 - -struct wlr_xwm_selection; - -struct wlr_xwm_selection_transfer { - struct wlr_xwm_selection *selection; - - bool incr; - bool flush_property_on_delete; - bool property_set; - struct wl_array source_data; - int source_fd; - struct wl_event_source *source; - - // when sending to x11 - xcb_selection_request_event_t request; - struct wl_list outgoing_link; - - // when receiving from x11 - int property_start; - xcb_get_property_reply_t *property_reply; -}; - -struct wlr_xwm_selection { - struct wlr_xwm *xwm; - xcb_atom_t atom; - xcb_window_t window; - xcb_window_t owner; - xcb_timestamp_t timestamp; - - struct wlr_xwm_selection_transfer incoming; - struct wl_list outgoing; -}; - struct wlr_xwm { struct wlr_xwayland *xwayland; struct wl_event_source *event_source; @@ -168,15 +139,12 @@ void xwm_set_cursor(struct wlr_xwm *xwm, const uint8_t *pixels, uint32_t stride, int xwm_handle_selection_event(struct wlr_xwm *xwm, xcb_generic_event_t *event); int xwm_handle_selection_client_message(struct wlr_xwm *xwm, - xcb_client_message_event_t *ev); - -void xwm_selection_init(struct wlr_xwm *xwm); -void xwm_selection_finish(struct wlr_xwm *xwm); + xcb_client_message_event_t *ev); 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); + size_t num_atoms, enum atom_name needle); #endif diff --git a/xwayland/meson.build b/xwayland/meson.build index 9d7f3f4a..ec486f58 100644 --- a/xwayland/meson.build +++ b/xwayland/meson.build @@ -1,7 +1,10 @@ lib_wlr_xwayland = static_library( 'wlr_xwayland', files( - 'selection.c', + 'selection/dnd.c', + 'selection/incoming.c', + 'selection/outgoing.c', + 'selection/selection.c', 'sockets.c', 'xwayland.c', 'xwm.c', diff --git a/xwayland/selection.c b/xwayland/selection.c deleted file mode 100644 index 871ce265..00000000 --- a/xwayland/selection.c +++ /dev/null @@ -1,1483 +0,0 @@ -#define _XOPEN_SOURCE 700 -#include <assert.h> -#include <fcntl.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <wlr/types/wlr_data_device.h> -#include <wlr/types/wlr_primary_selection.h> -#include <wlr/util/log.h> -#include <xcb/xfixes.h> -#include "xwayland/xwm.h" - -static const size_t incr_chunk_size = 64 * 1024; - -static xcb_atom_t data_device_manager_dnd_action_to_atom( - struct wlr_xwm *xwm, enum wl_data_device_manager_dnd_action action) { - if (action & WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY) { - return xwm->atoms[DND_ACTION_COPY]; - } else if (action & WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE) { - return xwm->atoms[DND_ACTION_MOVE]; - } else if (action & WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK) { - return xwm->atoms[DND_ACTION_ASK]; - } - return XCB_ATOM_NONE; -} - -static enum wl_data_device_manager_dnd_action - data_device_manager_dnd_action_from_atom(struct wlr_xwm *xwm, - enum atom_name atom) { - if (atom == xwm->atoms[DND_ACTION_COPY] || - atom == xwm->atoms[DND_ACTION_PRIVATE]) { - return WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY; - } else if (atom == xwm->atoms[DND_ACTION_MOVE]) { - return WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE; - } else if (atom == xwm->atoms[DND_ACTION_ASK]) { - return WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK; - } - return WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE; -} - -static void xwm_selection_send_notify(struct wlr_xwm *xwm, - xcb_selection_request_event_t *req, bool success) { - xcb_selection_notify_event_t selection_notify = { - .response_type = XCB_SELECTION_NOTIFY, - .sequence = 0, - .time = req->time, - .requestor = req->requestor, - .selection = req->selection, - .target = req->target, - .property = success ? req->property : XCB_ATOM_NONE, - }; - - wlr_log(L_DEBUG, "SendEvent destination=%d SelectionNotify(31) time=%d " - "requestor=%d selection=%d target=%d property=%d", req->requestor, - req->time, req->requestor, req->selection, req->target, - selection_notify.property); - xcb_send_event(xwm->xcb_conn, - 0, // propagate - req->requestor, - XCB_EVENT_MASK_NO_EVENT, - (const char *)&selection_notify); - xcb_flush(xwm->xcb_conn); -} - -static int xwm_selection_flush_source_data( - struct wlr_xwm_selection_transfer *transfer) { - xcb_change_property(transfer->selection->xwm->xcb_conn, - XCB_PROP_MODE_REPLACE, - transfer->request.requestor, - transfer->request.property, - transfer->request.target, - 8, // format - transfer->source_data.size, - transfer->source_data.data); - xcb_flush(transfer->selection->xwm->xcb_conn); - transfer->property_set = true; - size_t length = transfer->source_data.size; - transfer->source_data.size = 0; - return length; -} - -static void xwm_selection_transfer_remove_source( - struct wlr_xwm_selection_transfer *transfer) { - if (transfer->source != NULL) { - wl_event_source_remove(transfer->source); - transfer->source = NULL; - } -} - -static void xwm_selection_transfer_close_source_fd( - struct wlr_xwm_selection_transfer *transfer) { - if (transfer->source_fd >= 0) { - close(transfer->source_fd); - transfer->source_fd = -1; - } -} - -static void xwm_selection_transfer_start_outgoing( - struct wlr_xwm_selection_transfer *transfer); - -static void xwm_selection_transfer_destroy_outgoing( - struct wlr_xwm_selection_transfer *transfer) { - wl_list_remove(&transfer->outgoing_link); - - // Start next queued transfer - struct wlr_xwm_selection_transfer *first = NULL; - if (!wl_list_empty(&transfer->selection->outgoing)) { - first = wl_container_of(transfer->selection->outgoing.prev, first, - outgoing_link); - xwm_selection_transfer_start_outgoing(first); - } - - xwm_selection_transfer_remove_source(transfer); - xwm_selection_transfer_close_source_fd(transfer); - wl_array_release(&transfer->source_data); - free(transfer); -} - -static int xwm_data_source_read(int fd, uint32_t mask, void *data) { - struct wlr_xwm_selection_transfer *transfer = data; - struct wlr_xwm *xwm = transfer->selection->xwm; - - void *p; - size_t current = transfer->source_data.size; - if (transfer->source_data.size < incr_chunk_size) { - p = wl_array_add(&transfer->source_data, incr_chunk_size); - if (p == NULL) { - wlr_log(L_ERROR, "Could not allocate selection source_data"); - goto error_out; - } - } else { - p = (char *)transfer->source_data.data + transfer->source_data.size; - } - - size_t available = transfer->source_data.alloc - current; - ssize_t len = read(fd, p, available); - if (len == -1) { - wlr_log(L_ERROR, "read error from data source: %m"); - goto error_out; - } - - wlr_log(L_DEBUG, "read %ld bytes (available %zu, mask 0x%x)", len, - available, mask); - - transfer->source_data.size = current + len; - if (transfer->source_data.size >= incr_chunk_size) { - if (!transfer->incr) { - wlr_log(L_DEBUG, "got %zu bytes, starting incr", - transfer->source_data.size); - - xcb_change_property(xwm->xcb_conn, - XCB_PROP_MODE_REPLACE, - transfer->request.requestor, - transfer->request.property, - xwm->atoms[INCR], - 32, /* format */ - 1, &incr_chunk_size); - transfer->incr = true; - transfer->property_set = true; - transfer->flush_property_on_delete = true; - xwm_selection_transfer_remove_source(transfer); - xwm_selection_send_notify(xwm, &transfer->request, true); - } else if (transfer->property_set) { - wlr_log(L_DEBUG, "got %zu bytes, waiting for property delete", - transfer->source_data.size); - - transfer->flush_property_on_delete = true; - xwm_selection_transfer_remove_source(transfer); - } else { - wlr_log(L_DEBUG, "got %zu bytes, property deleted, setting new " - "property", transfer->source_data.size); - xwm_selection_flush_source_data(transfer); - } - } else if (len == 0 && !transfer->incr) { - wlr_log(L_DEBUG, "non-incr transfer complete"); - xwm_selection_flush_source_data(transfer); - xwm_selection_send_notify(xwm, &transfer->request, true); - xwm_selection_transfer_destroy_outgoing(transfer); - } else if (len == 0 && transfer->incr) { - wlr_log(L_DEBUG, "incr transfer complete"); - - transfer->flush_property_on_delete = true; - if (transfer->property_set) { - wlr_log(L_DEBUG, "got %zu bytes, waiting for property delete", - transfer->source_data.size); - } else { - wlr_log(L_DEBUG, "got %zu bytes, property deleted, setting new " - "property", transfer->source_data.size); - xwm_selection_flush_source_data(transfer); - } - xwm_selection_transfer_remove_source(transfer); - xwm_selection_transfer_close_source_fd(transfer); - } else { - wlr_log(L_DEBUG, "nothing happened, buffered the bytes"); - } - - return 1; - -error_out: - xwm_selection_send_notify(xwm, &transfer->request, false); - xwm_selection_transfer_destroy_outgoing(transfer); - return 0; -} - -static void xwm_send_incr_chunk(struct wlr_xwm_selection_transfer *transfer) { - wlr_log(L_DEBUG, "property deleted"); - - transfer->property_set = false; - if (transfer->flush_property_on_delete) { - wlr_log(L_DEBUG, "setting new property, %zu bytes", - transfer->source_data.size); - transfer->flush_property_on_delete = false; - int length = xwm_selection_flush_source_data(transfer); - - if (transfer->source_fd >= 0) { - xwm_selection_transfer_start_outgoing(transfer); - } else if (length > 0) { - /* Transfer is all done, but queue a flush for - * the delete of the last chunk so we can set - * the 0 sized property to signal the end of - * the transfer. */ - transfer->flush_property_on_delete = true; - wl_array_release(&transfer->source_data); - wl_array_init(&transfer->source_data); - } else { - xwm_selection_transfer_destroy_outgoing(transfer); - } - } -} - -static void xwm_selection_source_send(struct wlr_xwm_selection *selection, - const char *mime_type, int32_t fd) { - if (selection == &selection->xwm->clipboard_selection) { - struct wlr_data_source *source = - selection->xwm->seat->selection_source; - if (source != NULL) { - wlr_data_source_send(source, mime_type, fd); - return; - } - } else if (selection == &selection->xwm->primary_selection) { - struct wlr_primary_selection_source *source = - selection->xwm->seat->primary_selection_source; - if (source != NULL) { - source->send(source, mime_type, fd); - return; - } - } else if (selection == &selection->xwm->dnd_selection) { - struct wlr_data_source *source = - selection->xwm->seat->drag_source; - if (source != NULL) { - wlr_data_source_send(source, mime_type, fd); - return; - } - } - - 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_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) { - struct wlr_data_source *source = - selection->xwm->seat->drag_source; - if (source != NULL) { - return &source->mime_types; - } - } - return NULL; -} - -static void xwm_selection_transfer_start_outgoing( - struct wlr_xwm_selection_transfer *transfer) { - struct wlr_xwm *xwm = transfer->selection->xwm; - struct wl_event_loop *loop = - wl_display_get_event_loop(xwm->xwayland->wl_display); - transfer->source = wl_event_loop_add_fd(loop, transfer->source_fd, - WL_EVENT_READABLE, xwm_data_source_read, transfer); -} - -/** - * Read the Wayland selection and send it to an Xwayland client. - */ -static void xwm_selection_send_data(struct wlr_xwm_selection *selection, - xcb_selection_request_event_t *req, 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->xwm, req, false); - 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->xwm, req, false); - return; - } - - struct wlr_xwm_selection_transfer *transfer = - calloc(1, sizeof(struct wlr_xwm_selection_transfer)); - if (transfer == NULL) { - wlr_log(L_ERROR, "Allocation failed"); - return; - } - transfer->selection = selection; - transfer->request = *req; - wl_array_init(&transfer->source_data); - - int p[2]; - if (pipe(p) == -1) { - wlr_log(L_ERROR, "pipe() failed: %m"); - xwm_selection_send_notify(selection->xwm, req, false); - return; - } - fcntl(p[0], F_SETFD, FD_CLOEXEC); - fcntl(p[0], F_SETFL, O_NONBLOCK); - fcntl(p[1], F_SETFD, FD_CLOEXEC); - fcntl(p[1], F_SETFL, O_NONBLOCK); - - transfer->source_fd = p[0]; - - wlr_log(L_DEBUG, "Sending Wayland selection %u to Xwayland window with " - "MIME type %s, target %u", req->target, mime_type, req->target); - xwm_selection_source_send(selection, mime_type, p[1]); - - wl_list_insert(&selection->outgoing, &transfer->outgoing_link); - - // We can only handle one transfer at a time - if (wl_list_length(&selection->outgoing) == 1) { - xwm_selection_transfer_start_outgoing(transfer); - } -} - -static 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]; - } else if (strcmp(mime_type, "text/plain") == 0) { - return xwm->atoms[TEXT]; - } - - xcb_intern_atom_cookie_t cookie = - xcb_intern_atom(xwm->xcb_conn, 0, strlen(mime_type), mime_type); - xcb_intern_atom_reply_t *reply = - xcb_intern_atom_reply(xwm->xcb_conn, cookie, NULL); - if (reply == NULL) { - return XCB_ATOM_NONE; - } - xcb_atom_t atom = reply->atom; - free(reply); - return atom; -} - -static void xwm_dnd_send_event(struct wlr_xwm *xwm, xcb_atom_t type, - xcb_client_message_data_t *data) { - struct wlr_xwayland_surface *dest = xwm->drag_focus; - assert(dest != NULL); - - xcb_client_message_event_t event = { - .response_type = XCB_CLIENT_MESSAGE, - .format = 32, - .sequence = 0, - .window = dest->window_id, - .type = type, - .data = *data, - }; - - xcb_send_event(xwm->xcb_conn, - 0, // propagate - dest->window_id, - XCB_EVENT_MASK_NO_EVENT, - (const char *)&event); - xcb_flush(xwm->xcb_conn); -} - -static void xwm_dnd_send_enter(struct wlr_xwm *xwm) { - struct wlr_drag *drag = xwm->drag; - assert(drag != NULL); - struct wl_array *mime_types = &drag->source->mime_types; - - xcb_client_message_data_t data = { 0 }; - data.data32[0] = xwm->dnd_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; - char **mime_type_ptr; - wl_array_for_each(mime_type_ptr, mime_types) { - char *mime_type = *mime_type_ptr; - data.data32[2+i] = xwm_mime_type_to_atom(xwm, mime_type); - ++i; - } - } else { - // Let the client know that targets are not contained in the message - // data and must be retrieved with the DND_TYPE_LIST property - data.data32[1] |= 1; - - xcb_atom_t targets[n]; - size_t i = 0; - char **mime_type_ptr; - wl_array_for_each(mime_type_ptr, mime_types) { - char *mime_type = *mime_type_ptr; - targets[i] = xwm_mime_type_to_atom(xwm, mime_type); - ++i; - } - - xcb_change_property(xwm->xcb_conn, - XCB_PROP_MODE_REPLACE, - xwm->dnd_window, - xwm->atoms[DND_TYPE_LIST], - XCB_ATOM_ATOM, - 32, // format - n, targets); - } - - xwm_dnd_send_event(xwm, xwm->atoms[DND_ENTER], &data); -} - -static void xwm_dnd_send_position(struct wlr_xwm *xwm, uint32_t time, int16_t x, - int16_t y) { - struct wlr_drag *drag = xwm->drag; - assert(drag != NULL); - - xcb_client_message_data_t data = { 0 }; - data.data32[0] = xwm->dnd_window; - data.data32[2] = (x << 16) | y; - data.data32[3] = time; - data.data32[4] = - data_device_manager_dnd_action_to_atom(xwm, drag->source->actions); - - xwm_dnd_send_event(xwm, xwm->atoms[DND_POSITION], &data); -} - -static void xwm_dnd_send_drop(struct wlr_xwm *xwm, uint32_t time) { - struct wlr_drag *drag = xwm->drag; - assert(drag != NULL); - struct wlr_xwayland_surface *dest = xwm->drag_focus; - assert(dest != NULL); - - xcb_client_message_data_t data = { 0 }; - data.data32[0] = xwm->dnd_window; - data.data32[2] = time; - - xwm_dnd_send_event(xwm, xwm->atoms[DND_DROP], &data); -} - -static void xwm_dnd_send_leave(struct wlr_xwm *xwm) { - struct wlr_drag *drag = xwm->drag; - assert(drag != NULL); - struct wlr_xwayland_surface *dest = xwm->drag_focus; - assert(dest != NULL); - - xcb_client_message_data_t data = { 0 }; - data.data32[0] = xwm->dnd_window; - - xwm_dnd_send_event(xwm, xwm->atoms[DND_LEAVE], &data); -} - -/*static void xwm_dnd_send_finished(struct wlr_xwm *xwm) { - struct wlr_drag *drag = xwm->drag; - assert(drag != NULL); - struct wlr_xwayland_surface *dest = xwm->drag_focus; - assert(dest != NULL); - - xcb_client_message_data_t data = { 0 }; - data.data32[0] = xwm->dnd_window; - data.data32[1] = drag->source->accepted; - - if (drag->source->accepted) { - data.data32[2] = data_device_manager_dnd_action_to_atom(xwm, - drag->source->current_dnd_action); - } - - xwm_dnd_send_event(xwm, xwm->atoms[DND_FINISHED], &data); -}*/ - -static void xwm_selection_send_targets(struct wlr_xwm_selection *selection, - xcb_selection_request_event_t *req) { - 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_ERROR, "not sending selection targets: " - "no selection source available"); - xwm_selection_send_notify(selection->xwm, req, false); - return; - } - - size_t n = 2 + mime_types->size / sizeof(char *); - xcb_atom_t targets[n]; - targets[0] = xwm->atoms[TIMESTAMP]; - targets[1] = xwm->atoms[TARGETS]; - - size_t i = 0; - char **mime_type_ptr; - wl_array_for_each(mime_type_ptr, mime_types) { - char *mime_type = *mime_type_ptr; - targets[2+i] = xwm_mime_type_to_atom(xwm, mime_type); - ++i; - } - - xcb_change_property(xwm->xcb_conn, - XCB_PROP_MODE_REPLACE, - req->requestor, - req->property, - XCB_ATOM_ATOM, - 32, // format - n, targets); - - xwm_selection_send_notify(selection->xwm, req, true); -} - -static void xwm_selection_send_timestamp(struct wlr_xwm_selection *selection, - xcb_selection_request_event_t *req) { - xcb_change_property(selection->xwm->xcb_conn, - XCB_PROP_MODE_REPLACE, - req->requestor, - req->property, - XCB_ATOM_INTEGER, - 32, // format - 1, &selection->timestamp); - - xwm_selection_send_notify(selection->xwm, req, true); -} - -static struct wlr_xwm_selection *xwm_get_selection(struct wlr_xwm *xwm, - xcb_atom_t selection_atom) { - if (selection_atom == xwm->atoms[CLIPBOARD]) { - return &xwm->clipboard_selection; - } else if (selection_atom == xwm->atoms[PRIMARY]) { - return &xwm->primary_selection; - } else if (selection_atom == xwm->atoms[DND_SELECTION]) { - return &xwm->dnd_selection; - } else { - return NULL; - } -} - -static char *xwm_mime_type_from_atom(struct wlr_xwm *xwm, xcb_atom_t atom) { - if (atom == xwm->atoms[UTF8_STRING]) { - return strdup("text/plain;charset=utf-8"); - } else if (atom == xwm->atoms[TEXT]) { - return strdup("text/plain"); - } else { - return xwm_get_atom_name(xwm, atom); - } -} - -static void xwm_handle_selection_request(struct wlr_xwm *xwm, - xcb_selection_request_event_t *req) { - wlr_log(L_DEBUG, "XCB_SELECTION_REQUEST (time=%u owner=%u, requestor=%u " - "selection=%u, target=%u, property=%u)", - req->time, req->owner, req->requestor, req->selection, req->target, - req->property); - - if (req->selection == xwm->atoms[CLIPBOARD_MANAGER]) { - // The wlroots clipboard should already have grabbed the first target, - // so just send selection notify now. This isn't synchronized with the - // clipboard finishing getting the data, so there's a race here. - xwm_selection_send_notify(xwm, req, true); - return; - } - - struct wlr_xwm_selection *selection = - xwm_get_selection(xwm, req->selection); - if (selection == NULL) { - wlr_log(L_DEBUG, "received selection request for unknown selection"); - return; - } - - if (selection->window != req->owner) { - wlr_log(L_DEBUG, "received selection request with invalid owner"); - return; - } - - // No xwayland surface focused, deny access to clipboard - if (xwm->focus_surface == NULL && xwm->drag_focus == NULL) { - 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(xwm, req, false); - return; - } - - if (req->target == xwm->atoms[TARGETS]) { - xwm_selection_send_targets(selection, req); - } else if (req->target == xwm->atoms[TIMESTAMP]) { - xwm_selection_send_timestamp(selection, req); - } else if (req->target == xwm->atoms[DELETE]) { - xwm_selection_send_notify(selection->xwm, req, true); - } else { - // Send data - char *mime_type = xwm_mime_type_from_atom(xwm, req->target); - if (mime_type == NULL) { - wlr_log(L_ERROR, "ignoring selection request: unknown atom %u", - req->target); - xwm_selection_send_notify(xwm, req, false); - return; - } - xwm_selection_send_data(selection, req, mime_type); - free(mime_type); - } -} - -static void xwm_selection_transfer_destroy_property_reply( - struct wlr_xwm_selection_transfer *transfer) { - free(transfer->property_reply); - transfer->property_reply = NULL; -} - -/** - * Write the X11 selection to a Wayland client. - */ -static int xwm_data_source_write(int fd, uint32_t mask, void *data) { - struct wlr_xwm_selection_transfer *transfer = data; - struct wlr_xwm *xwm = transfer->selection->xwm; - - char *property = xcb_get_property_value(transfer->property_reply); - int remainder = xcb_get_property_value_length(transfer->property_reply) - - transfer->property_start; - - ssize_t len = write(fd, property + transfer->property_start, remainder); - if (len == -1) { - xwm_selection_transfer_destroy_property_reply(transfer); - xwm_selection_transfer_remove_source(transfer); - xwm_selection_transfer_close_source_fd(transfer); - wlr_log(L_ERROR, "write error to target fd: %m"); - return 1; - } - - wlr_log(L_DEBUG, "wrote %ld (chunk size %ld) of %d bytes", - transfer->property_start + len, - len, xcb_get_property_value_length(transfer->property_reply)); - - transfer->property_start += len; - if (len == remainder) { - xwm_selection_transfer_destroy_property_reply(transfer); - xwm_selection_transfer_remove_source(transfer); - - if (transfer->incr) { - wlr_log(L_DEBUG, "deleting property"); - xcb_delete_property(xwm->xcb_conn, transfer->selection->window, - xwm->atoms[WL_SELECTION]); - xcb_flush(xwm->xcb_conn); - } else { - wlr_log(L_DEBUG, "transfer complete"); - xwm_selection_transfer_close_source_fd(transfer); - } - } - - return 1; -} - -static void xwm_write_property(struct wlr_xwm_selection_transfer *transfer, - xcb_get_property_reply_t *reply) { - struct wlr_xwm *xwm = transfer->selection->xwm; - - transfer->property_start = 0; - transfer->property_reply = reply; - - xwm_data_source_write(transfer->source_fd, WL_EVENT_WRITABLE, transfer); - - if (transfer->property_reply != NULL) { - struct wl_event_loop *loop = - wl_display_get_event_loop(xwm->xwayland->wl_display); - transfer->source = wl_event_loop_add_fd(loop, - transfer->source_fd, WL_EVENT_WRITABLE, xwm_data_source_write, - transfer); - } -} - -static void xwm_get_incr_chunk(struct wlr_xwm_selection_transfer *transfer) { - struct wlr_xwm *xwm = transfer->selection->xwm; - wlr_log(L_DEBUG, "xwm_get_incr_chunk"); - - xcb_get_property_cookie_t cookie = xcb_get_property(xwm->xcb_conn, - 0, // delete - transfer->selection->window, - xwm->atoms[WL_SELECTION], - XCB_GET_PROPERTY_TYPE_ANY, - 0, // offset - 0x1fffffff // length - ); - - xcb_get_property_reply_t *reply = - xcb_get_property_reply(xwm->xcb_conn, cookie, NULL); - if (reply == NULL) { - wlr_log(L_ERROR, "cannot get selection property"); - return; - } - //dump_property(xwm, xwm->atoms[WL_SELECTION], reply); - - if (xcb_get_property_value_length(reply) > 0) { - /* Reply's ownership is transferred to xwm, which is responsible - * for freeing it */ - xwm_write_property(transfer, reply); - } else { - wlr_log(L_DEBUG, "transfer complete"); - xwm_selection_transfer_close_source_fd(transfer); - free(reply); - } -} - -static void xwm_selection_get_data(struct wlr_xwm_selection *selection) { - struct wlr_xwm *xwm = selection->xwm; - - xcb_get_property_cookie_t cookie = xcb_get_property(xwm->xcb_conn, - 1, // delete - selection->window, - xwm->atoms[WL_SELECTION], - XCB_GET_PROPERTY_TYPE_ANY, - 0, // offset - 0x1fffffff // length - ); - - xcb_get_property_reply_t *reply = - xcb_get_property_reply(xwm->xcb_conn, cookie, NULL); - if (reply == NULL) { - wlr_log(L_ERROR, "Cannot get selection property"); - return; - } - - struct wlr_xwm_selection_transfer *transfer = &selection->incoming; - if (reply->type == xwm->atoms[INCR]) { - transfer->incr = true; - free(reply); - } else { - transfer->incr = false; - // reply's ownership is transferred to wm, which is responsible - // for freeing it - xwm_write_property(transfer, reply); - } -} - -static void source_send(struct wlr_xwm_selection *selection, - struct wl_array *mime_types, struct wl_array *mime_types_atoms, - const char *requested_mime_type, int32_t fd) { - struct wlr_xwm *xwm = selection->xwm; - struct wlr_xwm_selection_transfer *transfer = &selection->incoming; - - xcb_atom_t *atoms = mime_types_atoms->data; - bool found = false; - xcb_atom_t mime_type_atom; - char **mime_type_ptr; - size_t i = 0; - wl_array_for_each(mime_type_ptr, mime_types) { - char *mime_type = *mime_type_ptr; - if (strcmp(mime_type, requested_mime_type) == 0) { - found = true; - mime_type_atom = atoms[i]; - break; - } - ++i; - } - if (!found) { - wlr_log(L_DEBUG, "Cannot send X11 selection to Wayland: " - "unsupported MIME type"); - return; - } - - xcb_convert_selection(xwm->xcb_conn, - selection->window, - selection->atom, - mime_type_atom, - xwm->atoms[WL_SELECTION], - XCB_TIME_CURRENT_TIME); - - xcb_flush(xwm->xcb_conn); - - fcntl(fd, F_SETFL, O_WRONLY | O_NONBLOCK); - transfer->source_fd = fd; -} - -struct x11_data_source { - struct wlr_data_source base; - struct wlr_xwm_selection *selection; - struct wl_array mime_types_atoms; -}; - -static const struct wlr_data_source_impl data_source_impl; - -static struct x11_data_source *data_source_from_wlr_data_source( - struct wlr_data_source *wlr_source) { - assert(wlr_source->impl == &data_source_impl); - return (struct x11_data_source *)wlr_source; -} - -static void data_source_send(struct wlr_data_source *wlr_source, - const char *mime_type, int32_t fd) { - struct x11_data_source *source = - data_source_from_wlr_data_source(wlr_source); - struct wlr_xwm_selection *selection = source->selection; - - source_send(selection, &wlr_source->mime_types, &source->mime_types_atoms, - mime_type, fd); -} - -static void data_source_cancel(struct wlr_data_source *wlr_source) { - struct x11_data_source *source = - data_source_from_wlr_data_source(wlr_source); - wlr_data_source_finish(&source->base); - wl_array_release(&source->mime_types_atoms); - free(source); -} - -static const struct wlr_data_source_impl data_source_impl = { - .send = data_source_send, - .cancel = data_source_cancel, -}; - -struct x11_primary_selection_source { - struct wlr_primary_selection_source base; - struct wlr_xwm_selection *selection; - struct wl_array mime_types_atoms; -}; - -static void primary_selection_source_send( - struct wlr_primary_selection_source *base, const char *mime_type, - int32_t fd) { - struct x11_primary_selection_source *source = - (struct x11_primary_selection_source *)base; - struct wlr_xwm_selection *selection = source->selection; - - source_send(selection, &base->mime_types, &source->mime_types_atoms, - mime_type, fd); -} - -static void primary_selection_source_cancel( - struct wlr_primary_selection_source *base) { - struct x11_primary_selection_source *source = - (struct x11_primary_selection_source *)base; - wlr_primary_selection_source_finish(&source->base); - wl_array_release(&source->mime_types_atoms); - free(source); -} - -static bool source_get_targets(struct wlr_xwm_selection *selection, - struct wl_array *mime_types, struct wl_array *mime_types_atoms) { - struct wlr_xwm *xwm = selection->xwm; - - xcb_get_property_cookie_t cookie = xcb_get_property(xwm->xcb_conn, - 1, // delete - selection->window, - xwm->atoms[WL_SELECTION], - XCB_GET_PROPERTY_TYPE_ANY, - 0, // offset - 4096 // length - ); - - xcb_get_property_reply_t *reply = - xcb_get_property_reply(xwm->xcb_conn, cookie, NULL); - if (reply == NULL) { - return false; - } - - if (reply->type != XCB_ATOM_ATOM) { - free(reply); - return false; - } - - xcb_atom_t *value = xcb_get_property_value(reply); - for (uint32_t i = 0; i < reply->value_len; i++) { - char *mime_type = NULL; - - if (value[i] == xwm->atoms[UTF8_STRING]) { - mime_type = strdup("text/plain;charset=utf-8"); - } else if (value[i] == xwm->atoms[TEXT]) { - mime_type = strdup("text/plain"); - } else if (value[i] != xwm->atoms[TARGETS] && - value[i] != xwm->atoms[TIMESTAMP]) { - xcb_get_atom_name_cookie_t name_cookie = - xcb_get_atom_name(xwm->xcb_conn, value[i]); - xcb_get_atom_name_reply_t *name_reply = - xcb_get_atom_name_reply(xwm->xcb_conn, name_cookie, NULL); - if (name_reply == NULL) { - continue; - } - size_t len = xcb_get_atom_name_name_length(name_reply); - char *name = xcb_get_atom_name_name(name_reply); // not a C string - if (memchr(name, '/', len) != NULL) { - mime_type = malloc((len + 1) * sizeof(char)); - if (mime_type == NULL) { - free(name_reply); - continue; - } - memcpy(mime_type, name, len); - mime_type[len] = '\0'; - } - free(name_reply); - } - - if (mime_type != NULL) { - char **mime_type_ptr = - wl_array_add(mime_types, sizeof(*mime_type_ptr)); - if (mime_type_ptr == NULL) { - break; - } - *mime_type_ptr = mime_type; - - xcb_atom_t *atom_ptr = - wl_array_add(mime_types_atoms, sizeof(*atom_ptr)); - if (atom_ptr == NULL) { - break; - } - *atom_ptr = value[i]; - } - } - - free(reply); - return true; -} - -static void xwm_selection_get_targets(struct wlr_xwm_selection *selection) { - // set the wayland selection to the X11 selection - struct wlr_xwm *xwm = selection->xwm; - - if (selection == &xwm->clipboard_selection) { - struct x11_data_source *source = - calloc(1, sizeof(struct x11_data_source)); - if (source == NULL) { - return; - } - wlr_data_source_init(&source->base, &data_source_impl); - - source->selection = selection; - wl_array_init(&source->mime_types_atoms); - - bool ok = source_get_targets(selection, &source->base.mime_types, - &source->mime_types_atoms); - if (ok) { - wlr_seat_set_selection(xwm->seat, &source->base, - wl_display_next_serial(xwm->xwayland->wl_display)); - } else { - wlr_data_source_cancel(&source->base); - } - } else if (selection == &xwm->primary_selection) { - struct x11_primary_selection_source *source = - calloc(1, sizeof(struct x11_primary_selection_source)); - if (source == NULL) { - return; - } - wlr_primary_selection_source_init(&source->base); - source->base.send = primary_selection_source_send; - source->base.cancel = primary_selection_source_cancel; - - source->selection = selection; - wl_array_init(&source->mime_types_atoms); - - bool ok = source_get_targets(selection, &source->base.mime_types, - &source->mime_types_atoms); - if (ok) { - wlr_seat_set_primary_selection(xwm->seat, &source->base, - wl_display_next_serial(xwm->xwayland->wl_display)); - } else { - source->base.cancel(&source->base); - } - } else if (selection == &xwm->dnd_selection) { - // TODO - } -} - -static void xwm_handle_selection_notify(struct wlr_xwm *xwm, - xcb_selection_notify_event_t *event) { - wlr_log(L_DEBUG, "XCB_SELECTION_NOTIFY (selection=%u, property=%u, target=%u)", - event->selection, event->property, - event->target); - - struct wlr_xwm_selection *selection = - xwm_get_selection(xwm, event->selection); - if (selection == NULL) { - return; - } - - if (event->property == XCB_ATOM_NONE) { - wlr_log(L_ERROR, "convert selection failed"); - } else if (event->target == xwm->atoms[TARGETS]) { - // No xwayland surface focused, deny access to clipboard - if (xwm->focus_surface == NULL) { - wlr_log(L_DEBUG, "denying write access to clipboard: " - "no xwayland surface focused"); - return; - } - - // This sets the Wayland clipboard (by calling wlr_seat_set_selection) - xwm_selection_get_targets(selection); - } else { - xwm_selection_get_data(selection); - } -} - -static int xwm_handle_xfixes_selection_notify(struct wlr_xwm *xwm, - xcb_xfixes_selection_notify_event_t *event) { - wlr_log(L_DEBUG, "XCB_XFIXES_SELECTION_NOTIFY (selection=%u, owner=%u)", - event->selection, event->owner); - - struct wlr_xwm_selection *selection = - xwm_get_selection(xwm, event->selection); - if (selection == NULL) { - return 0; - } - - if (event->owner == XCB_WINDOW_NONE) { - if (selection->owner != selection->window) { - // A real X client selection went away, not our - // proxy selection - if (selection == &xwm->clipboard_selection) { - wlr_seat_set_selection(xwm->seat, NULL, - wl_display_next_serial(xwm->xwayland->wl_display)); - } else if (selection == &xwm->primary_selection) { - wlr_seat_set_primary_selection(xwm->seat, NULL, - wl_display_next_serial(xwm->xwayland->wl_display)); - } else if (selection == &xwm->dnd_selection) { - // TODO: DND - } else { - wlr_log(L_DEBUG, "X11 selection has been cleared, but cannot " - "clear Wayland selection"); - } - } - - selection->owner = XCB_WINDOW_NONE; - return 1; - } - - selection->owner = event->owner; - - // We have to use XCB_TIME_CURRENT_TIME when we claim the - // selection, so grab the actual timestamp here so we can - // answer TIMESTAMP conversion requests correctly. - if (event->owner == selection->window) { - selection->timestamp = event->timestamp; - return 1; - } - - struct wlr_xwm_selection_transfer *transfer = &selection->incoming; - transfer->incr = false; - // doing this will give a selection notify where we actually handle the sync - xcb_convert_selection(xwm->xcb_conn, selection->window, - selection->atom, - xwm->atoms[TARGETS], - xwm->atoms[WL_SELECTION], - event->timestamp); - xcb_flush(xwm->xcb_conn); - - return 1; -} - -static int xwm_handle_selection_property_notify(struct wlr_xwm *xwm, - xcb_property_notify_event_t *event) { - struct wlr_xwm_selection *selections[] = { - &xwm->clipboard_selection, - &xwm->primary_selection, - &xwm->dnd_selection, - }; - - for (size_t i = 0; i < sizeof(selections)/sizeof(selections[0]); ++i) { - struct wlr_xwm_selection *selection = selections[i]; - - if (event->window == selection->window) { - if (event->state == XCB_PROPERTY_NEW_VALUE && - event->atom == xwm->atoms[WL_SELECTION] && - selection->incoming.incr) { - xwm_get_incr_chunk(&selection->incoming); - } - return 1; - } - - struct wlr_xwm_selection_transfer *outgoing; - wl_list_for_each(outgoing, &selection->outgoing, outgoing_link) { - if (event->window == outgoing->request.requestor) { - if (event->state == XCB_PROPERTY_DELETE && - event->atom == outgoing->request.property && - outgoing->incr) { - xwm_send_incr_chunk(outgoing); - } - return 1; - } - } - } - - return 0; -} - -int xwm_handle_selection_event(struct wlr_xwm *xwm, - xcb_generic_event_t *event) { - if (xwm->seat == NULL) { - wlr_log(L_DEBUG, "not handling selection events:" - "no seat assigned to xwayland"); - return 0; - } - - switch (event->response_type & ~0x80) { - case XCB_SELECTION_NOTIFY: - xwm_handle_selection_notify(xwm, (xcb_selection_notify_event_t *)event); - return 1; - case XCB_PROPERTY_NOTIFY: - return xwm_handle_selection_property_notify(xwm, - (xcb_property_notify_event_t *)event); - case XCB_SELECTION_REQUEST: - xwm_handle_selection_request(xwm, - (xcb_selection_request_event_t *)event); - return 1; - } - - switch (event->response_type - xwm->xfixes->first_event) { - case XCB_XFIXES_SELECTION_NOTIFY: - // an X11 window has copied something to the clipboard - return xwm_handle_xfixes_selection_notify(xwm, - (xcb_xfixes_selection_notify_event_t *)event); - } - - return 0; -} - -int xwm_handle_selection_client_message(struct wlr_xwm *xwm, - xcb_client_message_event_t *ev) { - if (ev->type == xwm->atoms[DND_STATUS]) { - if (xwm->drag == NULL) { - wlr_log(L_DEBUG, "ignoring XdndStatus client message because " - "there's no drag"); - return 1; - } - - xcb_client_message_data_t *data = &ev->data; - xcb_window_t target_window = data->data32[0]; - 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; - wlr_data_source_dnd_action(drag->source, action); - - wlr_log(L_DEBUG, "DND_STATUS window=%d accepted=%d action=%d", - target_window, accepted, action); - return 1; - } else if (ev->type == xwm->atoms[DND_FINISHED]) { - // This should only happen after the drag has ended, but before the drag - // source is destroyed - if (xwm->seat == NULL || xwm->seat->drag_source == NULL || - xwm->drag != NULL) { - wlr_log(L_DEBUG, "ignoring XdndFinished client message because " - "there's no finished drag"); - return 1; - } - - struct wlr_data_source *source = xwm->seat->drag_source; - - xcb_client_message_data_t *data = &ev->data; - xcb_window_t target_window = data->data32[0]; - bool performed = data->data32[1] & 1; - xcb_atom_t action_atom = data->data32[2]; - - if (xwm->drag_focus == NULL || - target_window != xwm->drag_focus->window_id) { - wlr_log(L_DEBUG, "ignoring XdndFinished client message because " - "it doesn't match the finished drag focus window ID"); - return 1; - } - - enum wl_data_device_manager_dnd_action action = - data_device_manager_dnd_action_from_atom(xwm, action_atom); - - if (performed) { - wlr_data_source_dnd_finish(source); - } - - wlr_log(L_DEBUG, "DND_FINISH window=%d performed=%d action=%d", - target_window, performed, action); - return 1; - } else { - return 0; - } -} - -static void selection_init(struct wlr_xwm *xwm, - struct wlr_xwm_selection *selection, xcb_atom_t atom) { - selection->xwm = xwm; - selection->atom = atom; - selection->window = xwm->selection_window; - selection->incoming.selection = selection; - wl_list_init(&selection->outgoing); - - uint32_t mask = - XCB_XFIXES_SELECTION_EVENT_MASK_SET_SELECTION_OWNER | - XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_WINDOW_DESTROY | - XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_CLIENT_CLOSE; - xcb_xfixes_select_selection_input(xwm->xcb_conn, selection->window, - selection->atom, mask); -} - -void xwm_selection_init(struct wlr_xwm *xwm) { - // Clipboard and primary selection - uint32_t selection_values[] = { - XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE - }; - xwm->selection_window = xcb_generate_id(xwm->xcb_conn); - xcb_create_window(xwm->xcb_conn, - XCB_COPY_FROM_PARENT, - xwm->selection_window, - xwm->screen->root, - 0, 0, - 10, 10, - 0, - XCB_WINDOW_CLASS_INPUT_OUTPUT, - xwm->screen->root_visual, - XCB_CW_EVENT_MASK, selection_values); - - xcb_set_selection_owner(xwm->xcb_conn, - xwm->selection_window, - xwm->atoms[CLIPBOARD_MANAGER], - XCB_TIME_CURRENT_TIME); - - selection_init(xwm, &xwm->clipboard_selection, xwm->atoms[CLIPBOARD]); - selection_init(xwm, &xwm->primary_selection, xwm->atoms[PRIMARY]); - - // Drag'n'drop - uint32_t dnd_values[] = { - XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE - }; - xwm->dnd_window = xcb_generate_id(xwm->xcb_conn); - xcb_create_window(xwm->xcb_conn, - XCB_COPY_FROM_PARENT, - xwm->dnd_window, - xwm->screen->root, - 0, 0, - 8192, 8192, - 0, - XCB_WINDOW_CLASS_INPUT_ONLY, - xwm->screen->root_visual, - XCB_CW_EVENT_MASK, dnd_values); - - uint32_t version = XDND_VERSION; - xcb_change_property(xwm->xcb_conn, - XCB_PROP_MODE_REPLACE, - xwm->dnd_window, - xwm->atoms[DND_AWARE], - XCB_ATOM_ATOM, - 32, // format - 1, &version); - - selection_init(xwm, &xwm->dnd_selection, xwm->atoms[DND_SELECTION]); -} - -void xwm_selection_finish(struct wlr_xwm *xwm) { - if (!xwm) { - return; - } - if (xwm->selection_window) { - xcb_destroy_window(xwm->xcb_conn, xwm->selection_window); - } - if (xwm->dnd_window) { - xcb_destroy_window(xwm->xcb_conn, xwm->dnd_window); - } - if (xwm->seat) { - if (xwm->seat->selection_source && - xwm->seat->selection_source->impl == &data_source_impl) { - wlr_seat_set_selection(xwm->seat, NULL, - wl_display_next_serial(xwm->xwayland->wl_display)); - } - if (xwm->seat->primary_selection_source && - xwm->seat->primary_selection_source->cancel == primary_selection_source_cancel) { - wlr_seat_set_primary_selection(xwm->seat, NULL, - wl_display_next_serial(xwm->xwayland->wl_display)); - } - wlr_xwayland_set_seat(xwm->xwayland, NULL); - } -} - -static void xwm_selection_set_owner(struct wlr_xwm_selection *selection, - bool set) { - if (set) { - xcb_set_selection_owner(selection->xwm->xcb_conn, - selection->window, - selection->atom, - XCB_TIME_CURRENT_TIME); - } else { - if (selection->owner == selection->window) { - xcb_set_selection_owner(selection->xwm->xcb_conn, - XCB_WINDOW_NONE, - selection->atom, - selection->timestamp); - } - } -} - -static void seat_handle_selection(struct wl_listener *listener, - void *data) { - struct wlr_seat *seat = data; - struct wlr_xwm *xwm = - wl_container_of(listener, xwm, seat_selection); - struct wlr_data_source *source = seat->selection_source; - - if (source != NULL && source->impl == &data_source_impl) { - return; - } - - xwm_selection_set_owner(&xwm->clipboard_selection, source != NULL); -} - -static void seat_handle_primary_selection(struct wl_listener *listener, - void *data) { - struct wlr_seat *seat = data; - struct wlr_xwm *xwm = - wl_container_of(listener, xwm, seat_primary_selection); - struct wlr_primary_selection_source *source = seat->primary_selection_source; - - if (source != NULL && source->send == primary_selection_source_send) { - return; - } - - xwm_selection_set_owner(&xwm->primary_selection, source != NULL); -} - -static void seat_handle_drag_focus(struct wl_listener *listener, void *data) { - struct wlr_drag *drag = data; - struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_focus); - - struct wlr_xwayland_surface *focus = NULL; - if (drag->focus != NULL) { - // TODO: check for subsurfaces? - struct wlr_xwayland_surface *surface; - wl_list_for_each(surface, &xwm->surfaces, link) { - if (surface->surface == drag->focus) { - focus = surface; - break; - } - } - } - - if (focus == xwm->drag_focus) { - return; - } - - if (xwm->drag_focus != NULL) { - wlr_data_source_dnd_action(drag->source, - WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE); - xwm_dnd_send_leave(xwm); - } - - xwm->drag_focus = focus; - - if (xwm->drag_focus != NULL) { - xwm_dnd_send_enter(xwm); - } -} - -static void seat_handle_drag_motion(struct wl_listener *listener, void *data) { - struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_motion); - struct wlr_drag_motion_event *event = data; - struct wlr_xwayland_surface *surface = xwm->drag_focus; - - if (surface == NULL) { - return; // No xwayland surface focused - } - - xwm_dnd_send_position(xwm, event->time, surface->x + (int16_t)event->sx, - surface->y + (int16_t)event->sy); -} - -static void seat_handle_drag_drop(struct wl_listener *listener, void *data) { - struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_drop); - struct wlr_drag_drop_event *event = data; - - if (xwm->drag_focus == NULL) { - return; // No xwayland surface focused - } - - wlr_log(L_DEBUG, "Wayland drag dropped over an Xwayland window"); - xwm_dnd_send_drop(xwm, event->time); -} - -static void seat_handle_drag_destroy(struct wl_listener *listener, void *data) { - struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_destroy); - - // Don't reset drag focus yet because the target will read the drag source - // right after - if (xwm->drag_focus != NULL && !xwm->drag->source->accepted) { - wlr_log(L_DEBUG, "Wayland drag cancelled over an Xwayland window"); - xwm_dnd_send_leave(xwm); - } - - wl_list_remove(&xwm->seat_drag_focus.link); - wl_list_remove(&xwm->seat_drag_motion.link); - wl_list_remove(&xwm->seat_drag_drop.link); - wl_list_remove(&xwm->seat_drag_destroy.link); - xwm->drag = NULL; -} - -static void seat_handle_drag_source_destroy(struct wl_listener *listener, - void *data) { - struct wlr_xwm *xwm = - wl_container_of(listener, xwm, seat_drag_source_destroy); - - wl_list_remove(&xwm->seat_drag_source_destroy.link); - xwm->drag_focus = NULL; -} - -static void seat_handle_start_drag(struct wl_listener *listener, void *data) { - struct wlr_drag *drag = data; - struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_start_drag); - - 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); - xwm->seat_drag_focus.notify = seat_handle_drag_focus; - wl_signal_add(&drag->events.motion, &xwm->seat_drag_motion); - xwm->seat_drag_motion.notify = seat_handle_drag_motion; - wl_signal_add(&drag->events.drop, &xwm->seat_drag_drop); - xwm->seat_drag_drop.notify = seat_handle_drag_drop; - wl_signal_add(&drag->events.destroy, &xwm->seat_drag_destroy); - xwm->seat_drag_destroy.notify = seat_handle_drag_destroy; - - wl_signal_add(&drag->source->events.destroy, - &xwm->seat_drag_source_destroy); - xwm->seat_drag_source_destroy.notify = seat_handle_drag_source_destroy; - } -} - -void xwm_set_seat(struct wlr_xwm *xwm, struct wlr_seat *seat) { - if (xwm->seat != NULL) { - wl_list_remove(&xwm->seat_selection.link); - wl_list_remove(&xwm->seat_primary_selection.link); - wl_list_remove(&xwm->seat_start_drag.link); - xwm->seat = NULL; - } - - if (seat == NULL) { - return; - } - - xwm->seat = seat; - - wl_signal_add(&seat->events.selection, &xwm->seat_selection); - xwm->seat_selection.notify = seat_handle_selection; - wl_signal_add(&seat->events.primary_selection, &xwm->seat_primary_selection); - xwm->seat_primary_selection.notify = seat_handle_primary_selection; - wl_signal_add(&seat->events.start_drag, &xwm->seat_start_drag); - xwm->seat_start_drag.notify = seat_handle_start_drag; - - seat_handle_selection(&xwm->seat_selection, seat); - seat_handle_primary_selection(&xwm->seat_primary_selection, seat); -} diff --git a/xwayland/selection/dnd.c b/xwayland/selection/dnd.c new file mode 100644 index 00000000..ed265c28 --- /dev/null +++ b/xwayland/selection/dnd.c @@ -0,0 +1,340 @@ +#define _XOPEN_SOURCE 700 +#include <assert.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wlr/types/wlr_data_device.h> +#include <wlr/types/wlr_primary_selection.h> +#include <wlr/util/log.h> +#include <xcb/xfixes.h> +#include "xwayland/xwm.h" +#include "xwayland/selection.h" + +static xcb_atom_t data_device_manager_dnd_action_to_atom( + struct wlr_xwm *xwm, enum wl_data_device_manager_dnd_action action) { + if (action & WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY) { + return xwm->atoms[DND_ACTION_COPY]; + } else if (action & WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE) { + return xwm->atoms[DND_ACTION_MOVE]; + } else if (action & WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK) { + return xwm->atoms[DND_ACTION_ASK]; + } + return XCB_ATOM_NONE; +} + +static enum wl_data_device_manager_dnd_action + data_device_manager_dnd_action_from_atom(struct wlr_xwm *xwm, + enum atom_name atom) { + if (atom == xwm->atoms[DND_ACTION_COPY] || + atom == xwm->atoms[DND_ACTION_PRIVATE]) { + return WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY; + } else if (atom == xwm->atoms[DND_ACTION_MOVE]) { + return WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE; + } else if (atom == xwm->atoms[DND_ACTION_ASK]) { + return WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK; + } + return WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE; +} + +static void xwm_dnd_send_event(struct wlr_xwm *xwm, xcb_atom_t type, + xcb_client_message_data_t *data) { + struct wlr_xwayland_surface *dest = xwm->drag_focus; + assert(dest != NULL); + + xcb_client_message_event_t event = { + .response_type = XCB_CLIENT_MESSAGE, + .format = 32, + .sequence = 0, + .window = dest->window_id, + .type = type, + .data = *data, + }; + + xcb_send_event(xwm->xcb_conn, + 0, // propagate + dest->window_id, + XCB_EVENT_MASK_NO_EVENT, + (const char *)&event); + xcb_flush(xwm->xcb_conn); +} + +static void xwm_dnd_send_enter(struct wlr_xwm *xwm) { + struct wlr_drag *drag = xwm->drag; + assert(drag != NULL); + struct wl_array *mime_types = &drag->source->mime_types; + + xcb_client_message_data_t data = { 0 }; + data.data32[0] = xwm->dnd_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; + char **mime_type_ptr; + wl_array_for_each(mime_type_ptr, mime_types) { + char *mime_type = *mime_type_ptr; + data.data32[2+i] = xwm_mime_type_to_atom(xwm, mime_type); + ++i; + } + } else { + // Let the client know that targets are not contained in the message + // data and must be retrieved with the DND_TYPE_LIST property + data.data32[1] |= 1; + + xcb_atom_t targets[n]; + size_t i = 0; + char **mime_type_ptr; + wl_array_for_each(mime_type_ptr, mime_types) { + char *mime_type = *mime_type_ptr; + targets[i] = xwm_mime_type_to_atom(xwm, mime_type); + ++i; + } + + xcb_change_property(xwm->xcb_conn, + XCB_PROP_MODE_REPLACE, + xwm->dnd_window, + xwm->atoms[DND_TYPE_LIST], + XCB_ATOM_ATOM, + 32, // format + n, targets); + } + + xwm_dnd_send_event(xwm, xwm->atoms[DND_ENTER], &data); +} + +static void xwm_dnd_send_position(struct wlr_xwm *xwm, uint32_t time, int16_t x, + int16_t y) { + struct wlr_drag *drag = xwm->drag; + assert(drag != NULL); + + xcb_client_message_data_t data = { 0 }; + data.data32[0] = xwm->dnd_window; + data.data32[2] = (x << 16) | y; + data.data32[3] = time; + data.data32[4] = + data_device_manager_dnd_action_to_atom(xwm, drag->source->actions); + + xwm_dnd_send_event(xwm, xwm->atoms[DND_POSITION], &data); +} + +static void xwm_dnd_send_drop(struct wlr_xwm *xwm, uint32_t time) { + struct wlr_drag *drag = xwm->drag; + assert(drag != NULL); + struct wlr_xwayland_surface *dest = xwm->drag_focus; + assert(dest != NULL); + + xcb_client_message_data_t data = { 0 }; + data.data32[0] = xwm->dnd_window; + data.data32[2] = time; + + xwm_dnd_send_event(xwm, xwm->atoms[DND_DROP], &data); +} + +static void xwm_dnd_send_leave(struct wlr_xwm *xwm) { + struct wlr_drag *drag = xwm->drag; + assert(drag != NULL); + struct wlr_xwayland_surface *dest = xwm->drag_focus; + assert(dest != NULL); + + xcb_client_message_data_t data = { 0 }; + data.data32[0] = xwm->dnd_window; + + xwm_dnd_send_event(xwm, xwm->atoms[DND_LEAVE], &data); +} + +/*static void xwm_dnd_send_finished(struct wlr_xwm *xwm) { + struct wlr_drag *drag = xwm->drag; + assert(drag != NULL); + struct wlr_xwayland_surface *dest = xwm->drag_focus; + assert(dest != NULL); + + xcb_client_message_data_t data = { 0 }; + data.data32[0] = xwm->dnd_window; + data.data32[1] = drag->source->accepted; + + if (drag->source->accepted) { + data.data32[2] = data_device_manager_dnd_action_to_atom(xwm, + drag->source->current_dnd_action); + } + + xwm_dnd_send_event(xwm, xwm->atoms[DND_FINISHED], &data); +}*/ + +int xwm_handle_selection_client_message(struct wlr_xwm *xwm, + xcb_client_message_event_t *ev) { + if (ev->type == xwm->atoms[DND_STATUS]) { + if (xwm->drag == NULL) { + wlr_log(L_DEBUG, "ignoring XdndStatus client message because " + "there's no drag"); + return 1; + } + + xcb_client_message_data_t *data = &ev->data; + xcb_window_t target_window = data->data32[0]; + 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; + wlr_data_source_dnd_action(drag->source, action); + + wlr_log(L_DEBUG, "DND_STATUS window=%d accepted=%d action=%d", + target_window, accepted, action); + return 1; + } else if (ev->type == xwm->atoms[DND_FINISHED]) { + // This should only happen after the drag has ended, but before the drag + // source is destroyed + if (xwm->seat == NULL || xwm->seat->drag_source == NULL || + xwm->drag != NULL) { + wlr_log(L_DEBUG, "ignoring XdndFinished client message because " + "there's no finished drag"); + return 1; + } + + struct wlr_data_source *source = xwm->seat->drag_source; + + xcb_client_message_data_t *data = &ev->data; + xcb_window_t target_window = data->data32[0]; + bool performed = data->data32[1] & 1; + xcb_atom_t action_atom = data->data32[2]; + + if (xwm->drag_focus == NULL || + target_window != xwm->drag_focus->window_id) { + wlr_log(L_DEBUG, "ignoring XdndFinished client message because " + "it doesn't match the finished drag focus window ID"); + return 1; + } + + enum wl_data_device_manager_dnd_action action = + data_device_manager_dnd_action_from_atom(xwm, action_atom); + + if (performed) { + wlr_data_source_dnd_finish(source); + } + + wlr_log(L_DEBUG, "DND_FINISH window=%d performed=%d action=%d", + target_window, performed, action); + return 1; + } else { + return 0; + } +} + +static void seat_handle_drag_focus(struct wl_listener *listener, void *data) { + struct wlr_drag *drag = data; + struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_focus); + + struct wlr_xwayland_surface *focus = NULL; + if (drag->focus != NULL) { + // TODO: check for subsurfaces? + struct wlr_xwayland_surface *surface; + wl_list_for_each(surface, &xwm->surfaces, link) { + if (surface->surface == drag->focus) { + focus = surface; + break; + } + } + } + + if (focus == xwm->drag_focus) { + return; + } + + if (xwm->drag_focus != NULL) { + wlr_data_source_dnd_action(drag->source, + WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE); + xwm_dnd_send_leave(xwm); + } + + xwm->drag_focus = focus; + + if (xwm->drag_focus != NULL) { + xwm_dnd_send_enter(xwm); + } +} + +static void seat_handle_drag_motion(struct wl_listener *listener, void *data) { + struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_motion); + struct wlr_drag_motion_event *event = data; + struct wlr_xwayland_surface *surface = xwm->drag_focus; + + if (surface == NULL) { + return; // No xwayland surface focused + } + + xwm_dnd_send_position(xwm, event->time, surface->x + (int16_t)event->sx, + surface->y + (int16_t)event->sy); +} + +static void seat_handle_drag_drop(struct wl_listener *listener, void *data) { + struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_drop); + struct wlr_drag_drop_event *event = data; + + if (xwm->drag_focus == NULL) { + return; // No xwayland surface focused + } + + wlr_log(L_DEBUG, "Wayland drag dropped over an Xwayland window"); + xwm_dnd_send_drop(xwm, event->time); +} + +static void seat_handle_drag_destroy(struct wl_listener *listener, void *data) { + struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_drag_destroy); + + // Don't reset drag focus yet because the target will read the drag source + // right after + if (xwm->drag_focus != NULL && !xwm->drag->source->accepted) { + wlr_log(L_DEBUG, "Wayland drag cancelled over an Xwayland window"); + xwm_dnd_send_leave(xwm); + } + + wl_list_remove(&xwm->seat_drag_focus.link); + wl_list_remove(&xwm->seat_drag_motion.link); + wl_list_remove(&xwm->seat_drag_drop.link); + wl_list_remove(&xwm->seat_drag_destroy.link); + xwm->drag = NULL; +} + +static void seat_handle_drag_source_destroy(struct wl_listener *listener, + void *data) { + struct wlr_xwm *xwm = + wl_container_of(listener, xwm, seat_drag_source_destroy); + + wl_list_remove(&xwm->seat_drag_source_destroy.link); + xwm->drag_focus = NULL; +} + +void xwm_seat_handle_start_drag(struct wlr_xwm *xwm, struct wlr_drag *drag) { + xwm->drag = drag; + xwm->drag_focus = NULL; + + if (drag != NULL) { + wl_signal_add(&drag->events.focus, &xwm->seat_drag_focus); + xwm->seat_drag_focus.notify = seat_handle_drag_focus; + wl_signal_add(&drag->events.motion, &xwm->seat_drag_motion); + xwm->seat_drag_motion.notify = seat_handle_drag_motion; + wl_signal_add(&drag->events.drop, &xwm->seat_drag_drop); + xwm->seat_drag_drop.notify = seat_handle_drag_drop; + wl_signal_add(&drag->events.destroy, &xwm->seat_drag_destroy); + xwm->seat_drag_destroy.notify = seat_handle_drag_destroy; + + wl_signal_add(&drag->source->events.destroy, + &xwm->seat_drag_source_destroy); + xwm->seat_drag_source_destroy.notify = seat_handle_drag_source_destroy; + } +} diff --git a/xwayland/selection/incoming.c b/xwayland/selection/incoming.c new file mode 100644 index 00000000..ab06f40d --- /dev/null +++ b/xwayland/selection/incoming.c @@ -0,0 +1,461 @@ +#define _XOPEN_SOURCE 700 +#include <assert.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wlr/types/wlr_data_device.h> +#include <wlr/types/wlr_primary_selection.h> +#include <wlr/util/log.h> +#include <xcb/xfixes.h> +#include "xwayland/xwm.h" +#include "xwayland/selection.h" + +/** + * Write the X11 selection to a Wayland client. + */ +static int xwm_data_source_write(int fd, uint32_t mask, void *data) { + struct wlr_xwm_selection_transfer *transfer = data; + struct wlr_xwm *xwm = transfer->selection->xwm; + + char *property = xcb_get_property_value(transfer->property_reply); + int remainder = xcb_get_property_value_length(transfer->property_reply) - + transfer->property_start; + + ssize_t len = write(fd, property + transfer->property_start, remainder); + if (len == -1) { + xwm_selection_transfer_destroy_property_reply(transfer); + xwm_selection_transfer_remove_source(transfer); + xwm_selection_transfer_close_source_fd(transfer); + wlr_log(L_ERROR, "write error to target fd: %m"); + return 1; + } + + wlr_log(L_DEBUG, "wrote %ld (chunk size %ld) of %d bytes", + transfer->property_start + len, + len, xcb_get_property_value_length(transfer->property_reply)); + + transfer->property_start += len; + if (len == remainder) { + xwm_selection_transfer_destroy_property_reply(transfer); + xwm_selection_transfer_remove_source(transfer); + + if (transfer->incr) { + wlr_log(L_DEBUG, "deleting property"); + xcb_delete_property(xwm->xcb_conn, transfer->selection->window, + xwm->atoms[WL_SELECTION]); + xcb_flush(xwm->xcb_conn); + } else { + wlr_log(L_DEBUG, "transfer complete"); + xwm_selection_transfer_close_source_fd(transfer); + } + } + + return 1; +} + +static void xwm_write_property(struct wlr_xwm_selection_transfer *transfer, + xcb_get_property_reply_t *reply) { + struct wlr_xwm *xwm = transfer->selection->xwm; + + transfer->property_start = 0; + transfer->property_reply = reply; + + xwm_data_source_write(transfer->source_fd, WL_EVENT_WRITABLE, transfer); + + if (transfer->property_reply != NULL) { + struct wl_event_loop *loop = + wl_display_get_event_loop(xwm->xwayland->wl_display); + transfer->source = wl_event_loop_add_fd(loop, + transfer->source_fd, WL_EVENT_WRITABLE, xwm_data_source_write, + transfer); + } +} + +void xwm_get_incr_chunk(struct wlr_xwm_selection_transfer *transfer) { + struct wlr_xwm *xwm = transfer->selection->xwm; + wlr_log(L_DEBUG, "xwm_get_incr_chunk"); + + xcb_get_property_cookie_t cookie = xcb_get_property(xwm->xcb_conn, + 0, // delete + transfer->selection->window, + xwm->atoms[WL_SELECTION], + XCB_GET_PROPERTY_TYPE_ANY, + 0, // offset + 0x1fffffff // length + ); + + xcb_get_property_reply_t *reply = + xcb_get_property_reply(xwm->xcb_conn, cookie, NULL); + if (reply == NULL) { + wlr_log(L_ERROR, "cannot get selection property"); + return; + } + //dump_property(xwm, xwm->atoms[WL_SELECTION], reply); + + if (xcb_get_property_value_length(reply) > 0) { + /* Reply's ownership is transferred to xwm, which is responsible + * for freeing it */ + xwm_write_property(transfer, reply); + } else { + wlr_log(L_DEBUG, "transfer complete"); + xwm_selection_transfer_close_source_fd(transfer); + free(reply); + } +} + +static void xwm_selection_get_data(struct wlr_xwm_selection *selection) { + struct wlr_xwm *xwm = selection->xwm; + + xcb_get_property_cookie_t cookie = xcb_get_property(xwm->xcb_conn, + 1, // delete + selection->window, + xwm->atoms[WL_SELECTION], + XCB_GET_PROPERTY_TYPE_ANY, + 0, // offset + 0x1fffffff // length + ); + + xcb_get_property_reply_t *reply = + xcb_get_property_reply(xwm->xcb_conn, cookie, NULL); + if (reply == NULL) { + wlr_log(L_ERROR, "Cannot get selection property"); + return; + } + + struct wlr_xwm_selection_transfer *transfer = &selection->incoming; + if (reply->type == xwm->atoms[INCR]) { + transfer->incr = true; + free(reply); + } else { + transfer->incr = false; + // reply's ownership is transferred to wm, which is responsible + // for freeing it + xwm_write_property(transfer, reply); + } +} + +static void source_send(struct wlr_xwm_selection *selection, + struct wl_array *mime_types, struct wl_array *mime_types_atoms, + const char *requested_mime_type, int32_t fd) { + struct wlr_xwm *xwm = selection->xwm; + struct wlr_xwm_selection_transfer *transfer = &selection->incoming; + + xcb_atom_t *atoms = mime_types_atoms->data; + bool found = false; + xcb_atom_t mime_type_atom; + char **mime_type_ptr; + size_t i = 0; + wl_array_for_each(mime_type_ptr, mime_types) { + char *mime_type = *mime_type_ptr; + if (strcmp(mime_type, requested_mime_type) == 0) { + found = true; + mime_type_atom = atoms[i]; + break; + } + ++i; + } + if (!found) { + wlr_log(L_DEBUG, "Cannot send X11 selection to Wayland: " + "unsupported MIME type"); + return; + } + + xcb_convert_selection(xwm->xcb_conn, + selection->window, + selection->atom, + mime_type_atom, + xwm->atoms[WL_SELECTION], + XCB_TIME_CURRENT_TIME); + + xcb_flush(xwm->xcb_conn); + + fcntl(fd, F_SETFL, O_WRONLY | O_NONBLOCK); + transfer->source_fd = fd; +} + +struct x11_data_source { + struct wlr_data_source base; + struct wlr_xwm_selection *selection; + struct wl_array mime_types_atoms; +}; + +static const struct wlr_data_source_impl data_source_impl; + +bool wlr_data_source_is_xwayland_data_source( + struct wlr_data_source *wlr_source) { + return wlr_source->impl == &data_source_impl; +} + +static struct x11_data_source *data_source_from_wlr_data_source( + struct wlr_data_source *wlr_source) { + assert(wlr_data_source_is_xwayland_data_source(wlr_source)); + return (struct x11_data_source *)wlr_source; +} + +static void data_source_send(struct wlr_data_source *wlr_source, + const char *mime_type, int32_t fd) { + struct x11_data_source *source = + data_source_from_wlr_data_source(wlr_source); + struct wlr_xwm_selection *selection = source->selection; + + source_send(selection, &wlr_source->mime_types, &source->mime_types_atoms, + mime_type, fd); +} + +static void data_source_cancel(struct wlr_data_source *wlr_source) { + struct x11_data_source *source = + data_source_from_wlr_data_source(wlr_source); + wlr_data_source_finish(&source->base); + wl_array_release(&source->mime_types_atoms); + free(source); +} + +static const struct wlr_data_source_impl data_source_impl = { + .send = data_source_send, + .cancel = data_source_cancel, +}; + +struct x11_primary_selection_source { + struct wlr_primary_selection_source base; + struct wlr_xwm_selection *selection; + struct wl_array mime_types_atoms; +}; + +static void primary_selection_source_cancel( + struct wlr_primary_selection_source *wlr_source); + +bool wlr_primary_selection_source_is_xwayland_primary_selection_source( + struct wlr_primary_selection_source *wlr_source) { + return wlr_source->cancel == primary_selection_source_cancel; +} + +static void primary_selection_source_send( + struct wlr_primary_selection_source *wlr_source, const char *mime_type, + int32_t fd) { + struct x11_primary_selection_source *source = + (struct x11_primary_selection_source *)wlr_source; + struct wlr_xwm_selection *selection = source->selection; + + source_send(selection, &wlr_source->mime_types, &source->mime_types_atoms, + mime_type, fd); +} + +static void primary_selection_source_cancel( + struct wlr_primary_selection_source *wlr_source) { + struct x11_primary_selection_source *source = + (struct x11_primary_selection_source *)wlr_source; + wlr_primary_selection_source_finish(&source->base); + wl_array_release(&source->mime_types_atoms); + free(source); +} + +static bool source_get_targets(struct wlr_xwm_selection *selection, + struct wl_array *mime_types, struct wl_array *mime_types_atoms) { + struct wlr_xwm *xwm = selection->xwm; + + xcb_get_property_cookie_t cookie = xcb_get_property(xwm->xcb_conn, + 1, // delete + selection->window, + xwm->atoms[WL_SELECTION], + XCB_GET_PROPERTY_TYPE_ANY, + 0, // offset + 4096 // length + ); + + xcb_get_property_reply_t *reply = + xcb_get_property_reply(xwm->xcb_conn, cookie, NULL); + if (reply == NULL) { + return false; + } + + if (reply->type != XCB_ATOM_ATOM) { + free(reply); + return false; + } + + xcb_atom_t *value = xcb_get_property_value(reply); + for (uint32_t i = 0; i < reply->value_len; i++) { + char *mime_type = NULL; + + if (value[i] == xwm->atoms[UTF8_STRING]) { + mime_type = strdup("text/plain;charset=utf-8"); + } else if (value[i] == xwm->atoms[TEXT]) { + mime_type = strdup("text/plain"); + } else if (value[i] != xwm->atoms[TARGETS] && + value[i] != xwm->atoms[TIMESTAMP]) { + xcb_get_atom_name_cookie_t name_cookie = + xcb_get_atom_name(xwm->xcb_conn, value[i]); + xcb_get_atom_name_reply_t *name_reply = + xcb_get_atom_name_reply(xwm->xcb_conn, name_cookie, NULL); + if (name_reply == NULL) { + continue; + } + size_t len = xcb_get_atom_name_name_length(name_reply); + char *name = xcb_get_atom_name_name(name_reply); // not a C string + if (memchr(name, '/', len) != NULL) { + mime_type = malloc((len + 1) * sizeof(char)); + if (mime_type == NULL) { + free(name_reply); + continue; + } + memcpy(mime_type, name, len); + mime_type[len] = '\0'; + } + free(name_reply); + } + + if (mime_type != NULL) { + char **mime_type_ptr = + wl_array_add(mime_types, sizeof(*mime_type_ptr)); + if (mime_type_ptr == NULL) { + break; + } + *mime_type_ptr = mime_type; + + xcb_atom_t *atom_ptr = + wl_array_add(mime_types_atoms, sizeof(*atom_ptr)); + if (atom_ptr == NULL) { + break; + } + *atom_ptr = value[i]; + } + } + + free(reply); + return true; +} + +static void xwm_selection_get_targets(struct wlr_xwm_selection *selection) { + // set the wayland selection to the X11 selection + struct wlr_xwm *xwm = selection->xwm; + + if (selection == &xwm->clipboard_selection) { + struct x11_data_source *source = + calloc(1, sizeof(struct x11_data_source)); + if (source == NULL) { + return; + } + wlr_data_source_init(&source->base, &data_source_impl); + + source->selection = selection; + wl_array_init(&source->mime_types_atoms); + + bool ok = source_get_targets(selection, &source->base.mime_types, + &source->mime_types_atoms); + if (ok) { + wlr_seat_set_selection(xwm->seat, &source->base, + wl_display_next_serial(xwm->xwayland->wl_display)); + } else { + wlr_data_source_cancel(&source->base); + } + } else if (selection == &xwm->primary_selection) { + struct x11_primary_selection_source *source = + calloc(1, sizeof(struct x11_primary_selection_source)); + if (source == NULL) { + return; + } + wlr_primary_selection_source_init(&source->base); + source->base.send = primary_selection_source_send; + source->base.cancel = primary_selection_source_cancel; + + source->selection = selection; + wl_array_init(&source->mime_types_atoms); + + bool ok = source_get_targets(selection, &source->base.mime_types, + &source->mime_types_atoms); + if (ok) { + wlr_seat_set_primary_selection(xwm->seat, &source->base, + wl_display_next_serial(xwm->xwayland->wl_display)); + } else { + source->base.cancel(&source->base); + } + } else if (selection == &xwm->dnd_selection) { + // TODO + } +} + +void xwm_handle_selection_notify(struct wlr_xwm *xwm, + xcb_selection_notify_event_t *event) { + wlr_log(L_DEBUG, "XCB_SELECTION_NOTIFY (selection=%u, property=%u, target=%u)", + event->selection, event->property, + event->target); + + struct wlr_xwm_selection *selection = + xwm_get_selection(xwm, event->selection); + if (selection == NULL) { + return; + } + + if (event->property == XCB_ATOM_NONE) { + wlr_log(L_ERROR, "convert selection failed"); + } else if (event->target == xwm->atoms[TARGETS]) { + // No xwayland surface focused, deny access to clipboard + if (xwm->focus_surface == NULL) { + wlr_log(L_DEBUG, "denying write access to clipboard: " + "no xwayland surface focused"); + return; + } + + // This sets the Wayland clipboard (by calling wlr_seat_set_selection) + xwm_selection_get_targets(selection); + } else { + xwm_selection_get_data(selection); + } +} + +int xwm_handle_xfixes_selection_notify(struct wlr_xwm *xwm, + xcb_xfixes_selection_notify_event_t *event) { + wlr_log(L_DEBUG, "XCB_XFIXES_SELECTION_NOTIFY (selection=%u, owner=%u)", + event->selection, event->owner); + + struct wlr_xwm_selection *selection = + xwm_get_selection(xwm, event->selection); + if (selection == NULL) { + return 0; + } + + if (event->owner == XCB_WINDOW_NONE) { + if (selection->owner != selection->window) { + // A real X client selection went away, not our + // proxy selection + if (selection == &xwm->clipboard_selection) { + wlr_seat_set_selection(xwm->seat, NULL, + wl_display_next_serial(xwm->xwayland->wl_display)); + } else if (selection == &xwm->primary_selection) { + wlr_seat_set_primary_selection(xwm->seat, NULL, + wl_display_next_serial(xwm->xwayland->wl_display)); + } else if (selection == &xwm->dnd_selection) { + // TODO: DND + } else { + wlr_log(L_DEBUG, "X11 selection has been cleared, but cannot " + "clear Wayland selection"); + } + } + + selection->owner = XCB_WINDOW_NONE; + return 1; + } + + selection->owner = event->owner; + + // We have to use XCB_TIME_CURRENT_TIME when we claim the + // selection, so grab the actual timestamp here so we can + // answer TIMESTAMP conversion requests correctly. + if (event->owner == selection->window) { + selection->timestamp = event->timestamp; + return 1; + } + + struct wlr_xwm_selection_transfer *transfer = &selection->incoming; + transfer->incr = false; + // doing this will give a selection notify where we actually handle the sync + xcb_convert_selection(xwm->xcb_conn, selection->window, + selection->atom, + xwm->atoms[TARGETS], + xwm->atoms[WL_SELECTION], + event->timestamp); + xcb_flush(xwm->xcb_conn); + + return 1; +} diff --git a/xwayland/selection/outgoing.c b/xwayland/selection/outgoing.c new file mode 100644 index 00000000..b612b2fb --- /dev/null +++ b/xwayland/selection/outgoing.c @@ -0,0 +1,420 @@ +#define _XOPEN_SOURCE 700 +#include <assert.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wlr/types/wlr_data_device.h> +#include <wlr/types/wlr_primary_selection.h> +#include <wlr/util/log.h> +#include <xcb/xfixes.h> +#include "xwayland/xwm.h" +#include "xwayland/selection.h" + +static void xwm_selection_send_notify(struct wlr_xwm *xwm, + xcb_selection_request_event_t *req, bool success) { + xcb_selection_notify_event_t selection_notify = { + .response_type = XCB_SELECTION_NOTIFY, + .sequence = 0, + .time = req->time, + .requestor = req->requestor, + .selection = req->selection, + .target = req->target, + .property = success ? req->property : XCB_ATOM_NONE, + }; + + wlr_log(L_DEBUG, "SendEvent destination=%d SelectionNotify(31) time=%d " + "requestor=%d selection=%d target=%d property=%d", req->requestor, + req->time, req->requestor, req->selection, req->target, + selection_notify.property); + xcb_send_event(xwm->xcb_conn, + 0, // propagate + req->requestor, + XCB_EVENT_MASK_NO_EVENT, + (const char *)&selection_notify); + xcb_flush(xwm->xcb_conn); +} + +static int xwm_selection_flush_source_data( + struct wlr_xwm_selection_transfer *transfer) { + xcb_change_property(transfer->selection->xwm->xcb_conn, + XCB_PROP_MODE_REPLACE, + transfer->request.requestor, + transfer->request.property, + transfer->request.target, + 8, // format + transfer->source_data.size, + transfer->source_data.data); + xcb_flush(transfer->selection->xwm->xcb_conn); + transfer->property_set = true; + size_t length = transfer->source_data.size; + transfer->source_data.size = 0; + return length; +} + +static void xwm_selection_transfer_start_outgoing( + struct wlr_xwm_selection_transfer *transfer); + +static void xwm_selection_transfer_destroy_outgoing( + struct wlr_xwm_selection_transfer *transfer) { + wl_list_remove(&transfer->outgoing_link); + + // Start next queued transfer + struct wlr_xwm_selection_transfer *first = NULL; + if (!wl_list_empty(&transfer->selection->outgoing)) { + first = wl_container_of(transfer->selection->outgoing.prev, first, + outgoing_link); + xwm_selection_transfer_start_outgoing(first); + } + + xwm_selection_transfer_remove_source(transfer); + xwm_selection_transfer_close_source_fd(transfer); + wl_array_release(&transfer->source_data); + free(transfer); +} + +static int xwm_data_source_read(int fd, uint32_t mask, void *data) { + struct wlr_xwm_selection_transfer *transfer = data; + struct wlr_xwm *xwm = transfer->selection->xwm; + + void *p; + size_t current = transfer->source_data.size; + if (transfer->source_data.size < INCR_CHUNK_SIZE) { + p = wl_array_add(&transfer->source_data, INCR_CHUNK_SIZE); + if (p == NULL) { + wlr_log(L_ERROR, "Could not allocate selection source_data"); + goto error_out; + } + } else { + p = (char *)transfer->source_data.data + transfer->source_data.size; + } + + size_t available = transfer->source_data.alloc - current; + ssize_t len = read(fd, p, available); + if (len == -1) { + wlr_log(L_ERROR, "read error from data source: %m"); + goto error_out; + } + + wlr_log(L_DEBUG, "read %ld bytes (available %zu, mask 0x%x)", len, + available, mask); + + transfer->source_data.size = current + len; + if (transfer->source_data.size >= INCR_CHUNK_SIZE) { + if (!transfer->incr) { + wlr_log(L_DEBUG, "got %zu bytes, starting incr", + transfer->source_data.size); + + size_t incr_chunk_size = INCR_CHUNK_SIZE; + xcb_change_property(xwm->xcb_conn, + XCB_PROP_MODE_REPLACE, + transfer->request.requestor, + transfer->request.property, + xwm->atoms[INCR], + 32, /* format */ + 1, &incr_chunk_size); + transfer->incr = true; + transfer->property_set = true; + transfer->flush_property_on_delete = true; + xwm_selection_transfer_remove_source(transfer); + xwm_selection_send_notify(xwm, &transfer->request, true); + } else if (transfer->property_set) { + wlr_log(L_DEBUG, "got %zu bytes, waiting for property delete", + transfer->source_data.size); + + transfer->flush_property_on_delete = true; + xwm_selection_transfer_remove_source(transfer); + } else { + wlr_log(L_DEBUG, "got %zu bytes, property deleted, setting new " + "property", transfer->source_data.size); + xwm_selection_flush_source_data(transfer); + } + } else if (len == 0 && !transfer->incr) { + wlr_log(L_DEBUG, "non-incr transfer complete"); + xwm_selection_flush_source_data(transfer); + xwm_selection_send_notify(xwm, &transfer->request, true); + xwm_selection_transfer_destroy_outgoing(transfer); + } else if (len == 0 && transfer->incr) { + wlr_log(L_DEBUG, "incr transfer complete"); + + transfer->flush_property_on_delete = true; + if (transfer->property_set) { + wlr_log(L_DEBUG, "got %zu bytes, waiting for property delete", + transfer->source_data.size); + } else { + wlr_log(L_DEBUG, "got %zu bytes, property deleted, setting new " + "property", transfer->source_data.size); + xwm_selection_flush_source_data(transfer); + } + xwm_selection_transfer_remove_source(transfer); + xwm_selection_transfer_close_source_fd(transfer); + } else { + wlr_log(L_DEBUG, "nothing happened, buffered the bytes"); + } + + return 1; + +error_out: + xwm_selection_send_notify(xwm, &transfer->request, false); + xwm_selection_transfer_destroy_outgoing(transfer); + return 0; +} + +void xwm_send_incr_chunk(struct wlr_xwm_selection_transfer *transfer) { + wlr_log(L_DEBUG, "property deleted"); + + transfer->property_set = false; + if (transfer->flush_property_on_delete) { + wlr_log(L_DEBUG, "setting new property, %zu bytes", + transfer->source_data.size); + transfer->flush_property_on_delete = false; + int length = xwm_selection_flush_source_data(transfer); + + if (transfer->source_fd >= 0) { + xwm_selection_transfer_start_outgoing(transfer); + } else if (length > 0) { + /* Transfer is all done, but queue a flush for + * the delete of the last chunk so we can set + * the 0 sized property to signal the end of + * the transfer. */ + transfer->flush_property_on_delete = true; + wl_array_release(&transfer->source_data); + wl_array_init(&transfer->source_data); + } else { + xwm_selection_transfer_destroy_outgoing(transfer); + } + } +} + +static void xwm_selection_source_send(struct wlr_xwm_selection *selection, + const char *mime_type, int32_t fd) { + if (selection == &selection->xwm->clipboard_selection) { + struct wlr_data_source *source = + selection->xwm->seat->selection_source; + if (source != NULL) { + wlr_data_source_send(source, mime_type, fd); + return; + } + } else if (selection == &selection->xwm->primary_selection) { + struct wlr_primary_selection_source *source = + selection->xwm->seat->primary_selection_source; + if (source != NULL) { + source->send(source, mime_type, fd); + return; + } + } else if (selection == &selection->xwm->dnd_selection) { + struct wlr_data_source *source = + selection->xwm->seat->drag_source; + if (source != NULL) { + wlr_data_source_send(source, mime_type, fd); + return; + } + } + + wlr_log(L_DEBUG, "not sending selection: no selection source available"); +} + +static void xwm_selection_transfer_start_outgoing( + struct wlr_xwm_selection_transfer *transfer) { + struct wlr_xwm *xwm = transfer->selection->xwm; + struct wl_event_loop *loop = + wl_display_get_event_loop(xwm->xwayland->wl_display); + transfer->source = wl_event_loop_add_fd(loop, transfer->source_fd, + WL_EVENT_READABLE, xwm_data_source_read, transfer); +} + +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_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) { + struct wlr_data_source *source = + selection->xwm->seat->drag_source; + if (source != NULL) { + return &source->mime_types; + } + } + return NULL; +} + +/** + * Read the Wayland selection and send it to an Xwayland client. + */ +static void xwm_selection_send_data(struct wlr_xwm_selection *selection, + xcb_selection_request_event_t *req, 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->xwm, req, false); + 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->xwm, req, false); + return; + } + + struct wlr_xwm_selection_transfer *transfer = + calloc(1, sizeof(struct wlr_xwm_selection_transfer)); + if (transfer == NULL) { + wlr_log(L_ERROR, "Allocation failed"); + return; + } + transfer->selection = selection; + transfer->request = *req; + wl_array_init(&transfer->source_data); + + int p[2]; + if (pipe(p) == -1) { + wlr_log(L_ERROR, "pipe() failed: %m"); + xwm_selection_send_notify(selection->xwm, req, false); + return; + } + fcntl(p[0], F_SETFD, FD_CLOEXEC); + fcntl(p[0], F_SETFL, O_NONBLOCK); + fcntl(p[1], F_SETFD, FD_CLOEXEC); + fcntl(p[1], F_SETFL, O_NONBLOCK); + + transfer->source_fd = p[0]; + + wlr_log(L_DEBUG, "Sending Wayland selection %u to Xwayland window with " + "MIME type %s, target %u", req->target, mime_type, req->target); + xwm_selection_source_send(selection, mime_type, p[1]); + + wl_list_insert(&selection->outgoing, &transfer->outgoing_link); + + // We can only handle one transfer at a time + if (wl_list_length(&selection->outgoing) == 1) { + xwm_selection_transfer_start_outgoing(transfer); + } +} + +static void xwm_selection_send_targets(struct wlr_xwm_selection *selection, + xcb_selection_request_event_t *req) { + 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_ERROR, "not sending selection targets: " + "no selection source available"); + xwm_selection_send_notify(selection->xwm, req, false); + return; + } + + size_t n = 2 + mime_types->size / sizeof(char *); + xcb_atom_t targets[n]; + targets[0] = xwm->atoms[TIMESTAMP]; + targets[1] = xwm->atoms[TARGETS]; + + size_t i = 0; + char **mime_type_ptr; + wl_array_for_each(mime_type_ptr, mime_types) { + char *mime_type = *mime_type_ptr; + targets[2+i] = xwm_mime_type_to_atom(xwm, mime_type); + ++i; + } + + xcb_change_property(xwm->xcb_conn, + XCB_PROP_MODE_REPLACE, + req->requestor, + req->property, + XCB_ATOM_ATOM, + 32, // format + n, targets); + + xwm_selection_send_notify(selection->xwm, req, true); +} + +static void xwm_selection_send_timestamp(struct wlr_xwm_selection *selection, + xcb_selection_request_event_t *req) { + xcb_change_property(selection->xwm->xcb_conn, + XCB_PROP_MODE_REPLACE, + req->requestor, + req->property, + XCB_ATOM_INTEGER, + 32, // format + 1, &selection->timestamp); + + xwm_selection_send_notify(selection->xwm, req, true); +} + +void xwm_handle_selection_request(struct wlr_xwm *xwm, + xcb_selection_request_event_t *req) { + wlr_log(L_DEBUG, "XCB_SELECTION_REQUEST (time=%u owner=%u, requestor=%u " + "selection=%u, target=%u, property=%u)", + req->time, req->owner, req->requestor, req->selection, req->target, + req->property); + + if (req->selection == xwm->atoms[CLIPBOARD_MANAGER]) { + // The wlroots clipboard should already have grabbed the first target, + // so just send selection notify now. This isn't synchronized with the + // clipboard finishing getting the data, so there's a race here. + xwm_selection_send_notify(xwm, req, true); + return; + } + + struct wlr_xwm_selection *selection = + xwm_get_selection(xwm, req->selection); + if (selection == NULL) { + wlr_log(L_DEBUG, "received selection request for unknown selection"); + return; + } + + if (selection->window != req->owner) { + wlr_log(L_DEBUG, "received selection request with invalid owner"); + return; + } + + // No xwayland surface focused, deny access to clipboard + if (xwm->focus_surface == NULL && xwm->drag_focus == NULL) { + 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(xwm, req, false); + return; + } + + if (req->target == xwm->atoms[TARGETS]) { + xwm_selection_send_targets(selection, req); + } else if (req->target == xwm->atoms[TIMESTAMP]) { + xwm_selection_send_timestamp(selection, req); + } else if (req->target == xwm->atoms[DELETE]) { + xwm_selection_send_notify(selection->xwm, req, true); + } else { + // Send data + char *mime_type = xwm_mime_type_from_atom(xwm, req->target); + if (mime_type == NULL) { + wlr_log(L_ERROR, "ignoring selection request: unknown atom %u", + req->target); + xwm_selection_send_notify(xwm, req, false); + return; + } + xwm_selection_send_data(selection, req, mime_type); + free(mime_type); + } +} diff --git a/xwayland/selection/selection.c b/xwayland/selection/selection.c new file mode 100644 index 00000000..39c47c45 --- /dev/null +++ b/xwayland/selection/selection.c @@ -0,0 +1,319 @@ +#define _XOPEN_SOURCE 700 +#include <assert.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wlr/types/wlr_data_device.h> +#include <wlr/types/wlr_primary_selection.h> +#include <wlr/util/log.h> +#include <xcb/xfixes.h> +#include "xwayland/xwm.h" +#include "xwayland/selection.h" + +void xwm_selection_transfer_remove_source( + struct wlr_xwm_selection_transfer *transfer) { + if (transfer->source != NULL) { + wl_event_source_remove(transfer->source); + transfer->source = NULL; + } +} + +void xwm_selection_transfer_close_source_fd( + struct wlr_xwm_selection_transfer *transfer) { + if (transfer->source_fd >= 0) { + close(transfer->source_fd); + transfer->source_fd = -1; + } +} + +void xwm_selection_transfer_destroy_property_reply( + struct wlr_xwm_selection_transfer *transfer) { + free(transfer->property_reply); + transfer->property_reply = NULL; +} + +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]; + } else if (strcmp(mime_type, "text/plain") == 0) { + return xwm->atoms[TEXT]; + } + + xcb_intern_atom_cookie_t cookie = + xcb_intern_atom(xwm->xcb_conn, 0, strlen(mime_type), mime_type); + xcb_intern_atom_reply_t *reply = + xcb_intern_atom_reply(xwm->xcb_conn, cookie, NULL); + if (reply == NULL) { + return XCB_ATOM_NONE; + } + xcb_atom_t atom = reply->atom; + free(reply); + return atom; +} + +char *xwm_mime_type_from_atom(struct wlr_xwm *xwm, xcb_atom_t atom) { + if (atom == xwm->atoms[UTF8_STRING]) { + return strdup("text/plain;charset=utf-8"); + } else if (atom == xwm->atoms[TEXT]) { + return strdup("text/plain"); + } else { + return xwm_get_atom_name(xwm, atom); + } +} + +struct wlr_xwm_selection *xwm_get_selection(struct wlr_xwm *xwm, + xcb_atom_t selection_atom) { + if (selection_atom == xwm->atoms[CLIPBOARD]) { + return &xwm->clipboard_selection; + } else if (selection_atom == xwm->atoms[PRIMARY]) { + return &xwm->primary_selection; + } else if (selection_atom == xwm->atoms[DND_SELECTION]) { + return &xwm->dnd_selection; + } else { + return NULL; + } +} + +static int xwm_handle_selection_property_notify(struct wlr_xwm *xwm, + xcb_property_notify_event_t *event) { + struct wlr_xwm_selection *selections[] = { + &xwm->clipboard_selection, + &xwm->primary_selection, + &xwm->dnd_selection, + }; + + for (size_t i = 0; i < sizeof(selections)/sizeof(selections[0]); ++i) { + struct wlr_xwm_selection *selection = selections[i]; + + if (event->window == selection->window) { + if (event->state == XCB_PROPERTY_NEW_VALUE && + event->atom == xwm->atoms[WL_SELECTION] && + selection->incoming.incr) { + xwm_get_incr_chunk(&selection->incoming); + } + return 1; + } + + struct wlr_xwm_selection_transfer *outgoing; + wl_list_for_each(outgoing, &selection->outgoing, outgoing_link) { + if (event->window == outgoing->request.requestor) { + if (event->state == XCB_PROPERTY_DELETE && + event->atom == outgoing->request.property && + outgoing->incr) { + xwm_send_incr_chunk(outgoing); + } + return 1; + } + } + } + + return 0; +} + +int xwm_handle_selection_event(struct wlr_xwm *xwm, + xcb_generic_event_t *event) { + if (xwm->seat == NULL) { + wlr_log(L_DEBUG, "not handling selection events: " + "no seat assigned to xwayland"); + return 0; + } + + switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) { + case XCB_SELECTION_NOTIFY: + xwm_handle_selection_notify(xwm, (xcb_selection_notify_event_t *)event); + return 1; + case XCB_PROPERTY_NOTIFY: + return xwm_handle_selection_property_notify(xwm, + (xcb_property_notify_event_t *)event); + case XCB_SELECTION_REQUEST: + xwm_handle_selection_request(xwm, + (xcb_selection_request_event_t *)event); + return 1; + } + + switch (event->response_type - xwm->xfixes->first_event) { + case XCB_XFIXES_SELECTION_NOTIFY: + // an X11 window has copied something to the clipboard + return xwm_handle_xfixes_selection_notify(xwm, + (xcb_xfixes_selection_notify_event_t *)event); + } + + return 0; +} + +static void selection_init(struct wlr_xwm *xwm, + struct wlr_xwm_selection *selection, xcb_atom_t atom) { + selection->xwm = xwm; + selection->atom = atom; + selection->window = xwm->selection_window; + selection->incoming.selection = selection; + wl_list_init(&selection->outgoing); + + uint32_t mask = + XCB_XFIXES_SELECTION_EVENT_MASK_SET_SELECTION_OWNER | + XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_WINDOW_DESTROY | + XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_CLIENT_CLOSE; + xcb_xfixes_select_selection_input(xwm->xcb_conn, selection->window, + selection->atom, mask); +} + +void xwm_selection_init(struct wlr_xwm *xwm) { + // Clipboard and primary selection + uint32_t selection_values[] = { + XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE + }; + xwm->selection_window = xcb_generate_id(xwm->xcb_conn); + xcb_create_window(xwm->xcb_conn, + XCB_COPY_FROM_PARENT, + xwm->selection_window, + xwm->screen->root, + 0, 0, + 10, 10, + 0, + XCB_WINDOW_CLASS_INPUT_OUTPUT, + xwm->screen->root_visual, + XCB_CW_EVENT_MASK, selection_values); + + xcb_set_selection_owner(xwm->xcb_conn, + xwm->selection_window, + xwm->atoms[CLIPBOARD_MANAGER], + XCB_TIME_CURRENT_TIME); + + selection_init(xwm, &xwm->clipboard_selection, xwm->atoms[CLIPBOARD]); + selection_init(xwm, &xwm->primary_selection, xwm->atoms[PRIMARY]); + + // Drag'n'drop + uint32_t dnd_values[] = { + XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE + }; + xwm->dnd_window = xcb_generate_id(xwm->xcb_conn); + xcb_create_window(xwm->xcb_conn, + XCB_COPY_FROM_PARENT, + xwm->dnd_window, + xwm->screen->root, + 0, 0, + 8192, 8192, + 0, + XCB_WINDOW_CLASS_INPUT_ONLY, + xwm->screen->root_visual, + XCB_CW_EVENT_MASK, dnd_values); + + uint32_t version = XDND_VERSION; + xcb_change_property(xwm->xcb_conn, + XCB_PROP_MODE_REPLACE, + xwm->dnd_window, + xwm->atoms[DND_AWARE], + XCB_ATOM_ATOM, + 32, // format + 1, &version); + + selection_init(xwm, &xwm->dnd_selection, xwm->atoms[DND_SELECTION]); +} + +void xwm_selection_finish(struct wlr_xwm *xwm) { + if (!xwm) { + return; + } + if (xwm->selection_window) { + xcb_destroy_window(xwm->xcb_conn, xwm->selection_window); + } + if (xwm->dnd_window) { + xcb_destroy_window(xwm->xcb_conn, xwm->dnd_window); + } + if (xwm->seat) { + if (xwm->seat->selection_source && + wlr_data_source_is_xwayland_data_source( + xwm->seat->selection_source)) { + wlr_seat_set_selection(xwm->seat, NULL, + wl_display_next_serial(xwm->xwayland->wl_display)); + } + if (xwm->seat->primary_selection_source && + wlr_primary_selection_source_is_xwayland_primary_selection_source( + xwm->seat->primary_selection_source)) { + wlr_seat_set_primary_selection(xwm->seat, NULL, + wl_display_next_serial(xwm->xwayland->wl_display)); + } + wlr_xwayland_set_seat(xwm->xwayland, NULL); + } +} + +static void xwm_selection_set_owner(struct wlr_xwm_selection *selection, + bool set) { + if (set) { + xcb_set_selection_owner(selection->xwm->xcb_conn, + selection->window, + selection->atom, + XCB_TIME_CURRENT_TIME); + } else { + if (selection->owner == selection->window) { + xcb_set_selection_owner(selection->xwm->xcb_conn, + XCB_WINDOW_NONE, + selection->atom, + selection->timestamp); + } + } +} + +static void seat_handle_selection(struct wl_listener *listener, + void *data) { + struct wlr_seat *seat = data; + struct wlr_xwm *xwm = + wl_container_of(listener, xwm, seat_selection); + struct wlr_data_source *source = seat->selection_source; + + if (source != NULL && wlr_data_source_is_xwayland_data_source(source)) { + return; + } + + xwm_selection_set_owner(&xwm->clipboard_selection, source != NULL); +} + +static void seat_handle_primary_selection(struct wl_listener *listener, + void *data) { + struct wlr_seat *seat = data; + struct wlr_xwm *xwm = + wl_container_of(listener, xwm, seat_primary_selection); + struct wlr_primary_selection_source *source = seat->primary_selection_source; + + if (source != NULL && + wlr_primary_selection_source_is_xwayland_primary_selection_source( + source)) { + return; + } + + xwm_selection_set_owner(&xwm->primary_selection, source != NULL); +} + +static void seat_handle_start_drag(struct wl_listener *listener, void *data) { + struct wlr_xwm *xwm = wl_container_of(listener, xwm, seat_start_drag); + struct wlr_drag *drag = data; + + xwm_selection_set_owner(&xwm->dnd_selection, drag != NULL); + xwm_seat_handle_start_drag(xwm, drag); +} + +void xwm_set_seat(struct wlr_xwm *xwm, struct wlr_seat *seat) { + if (xwm->seat != NULL) { + wl_list_remove(&xwm->seat_selection.link); + wl_list_remove(&xwm->seat_primary_selection.link); + wl_list_remove(&xwm->seat_start_drag.link); + xwm->seat = NULL; + } + + if (seat == NULL) { + return; + } + + xwm->seat = seat; + + wl_signal_add(&seat->events.selection, &xwm->seat_selection); + xwm->seat_selection.notify = seat_handle_selection; + wl_signal_add(&seat->events.primary_selection, &xwm->seat_primary_selection); + xwm->seat_primary_selection.notify = seat_handle_primary_selection; + wl_signal_add(&seat->events.start_drag, &xwm->seat_start_drag); + xwm->seat_start_drag.notify = seat_handle_start_drag; + + seat_handle_selection(&xwm->seat_selection, seat); + seat_handle_primary_selection(&xwm->seat_primary_selection, seat); +} diff --git a/xwayland/xwm.c b/xwayland/xwm.c index e0bf938c..c2b9bd11 100644 --- a/xwayland/xwm.c +++ b/xwayland/xwm.c @@ -1055,10 +1055,6 @@ static void xwm_handle_unhandled_event(struct wlr_xwm *xwm, xcb_generic_event_t #endif } -/* This is in xcb/xcb_event.h, but pulling xcb-util just for a constant - * others redefine anyway is meh - */ -#define XCB_EVENT_RESPONSE_TYPE_MASK (0x7f) static int x11_event_handler(int fd, uint32_t mask, void *data) { int count = 0; xcb_generic_event_t *event; |