/* * Copyright © 2011 Intel Corporation * * Permission to use, copy, modify, distribute, and sell this software and * its documentation for any purpose is hereby granted without fee, provided * that the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of the copyright holders not be used in * advertising or publicity pertaining to distribution of the software * without specific, written prior permission. The copyright holders make * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include "compositor.h" #include "xserver-server-protocol.h" /* * TODO: * - Clean X socket and lock file on exit * - Nuke lock file if process doesn't exist. * * WM TODO: * - Send take focus, hook into wlsc_surface_activate. */ struct xserver { struct wl_resource resource; }; struct wlsc_xserver { struct wl_display *wl_display; struct wl_event_loop *loop; struct wl_event_source *sigchld_source; int abstract_fd; struct wl_event_source *abstract_source; int unix_fd; struct wl_event_source *unix_source; int display; struct wlsc_process process; struct wl_resource *resource; struct wl_client *client; struct wlsc_compositor *compositor; struct wlsc_wm *wm; }; struct wlsc_wm { xcb_connection_t *conn; const xcb_query_extension_reply_t *xfixes; struct wl_event_source *source; xcb_screen_t *screen; struct wl_hash_table *window_hash; struct wlsc_xserver *server; xcb_window_t selection_window; int incr; int data_source_fd; struct wl_event_source *property_source; xcb_get_property_reply_t *property_reply; int property_start; struct { xcb_atom_t wm_protocols; xcb_atom_t wm_take_focus; xcb_atom_t wm_delete_window; xcb_atom_t net_wm_name; xcb_atom_t net_wm_icon; xcb_atom_t net_wm_state; xcb_atom_t net_wm_state_fullscreen; xcb_atom_t net_wm_user_time; xcb_atom_t net_wm_icon_name; xcb_atom_t clipboard; xcb_atom_t targets; xcb_atom_t utf8_string; xcb_atom_t wl_selection; xcb_atom_t incr; xcb_atom_t timestamp; xcb_atom_t multiple; xcb_atom_t compound_text; xcb_atom_t text; xcb_atom_t string; xcb_atom_t text_plain_utf8; xcb_atom_t text_plain; } atom; }; struct wlsc_wm_window { xcb_window_t id; struct wlsc_surface *surface; struct wl_listener surface_destroy_listener; }; static struct wlsc_wm_window * get_wm_window(struct wlsc_surface *surface); static const char * get_atom_name(xcb_connection_t *c, xcb_atom_t atom) { xcb_get_atom_name_cookie_t cookie; xcb_get_atom_name_reply_t *reply; xcb_generic_error_t *e; static char buffer[64]; if (atom == XCB_ATOM_NONE) return "None"; cookie = xcb_get_atom_name (c, atom); reply = xcb_get_atom_name_reply (c, cookie, &e); snprintf(buffer, sizeof buffer, "%.*s", xcb_get_atom_name_name_length (reply), xcb_get_atom_name_name (reply)); free(reply); return buffer; } static void dump_property(struct wlsc_wm *wm, xcb_atom_t property, xcb_get_property_reply_t *reply) { int32_t *incr_value; const char *text_value, *name; xcb_atom_t *atom_value; int i, width; width = fprintf(stderr, "property %s: ", get_atom_name(wm->conn, property)); width += fprintf(stderr, "type %s, format %d, length %d (value_len %d): ", get_atom_name(wm->conn, reply->type), reply->format, xcb_get_property_value_length(reply), reply->value_len); if (reply->type == wm->atom.incr) { incr_value = xcb_get_property_value(reply); fprintf(stderr, "%d\n", *incr_value); } if (reply->type == wm->atom.utf8_string || reply->type == wm->atom.string) { text_value = xcb_get_property_value(reply); fprintf(stderr, "\"%.100s\"\n", text_value); } if (reply->type == XCB_ATOM_ATOM) { atom_value = xcb_get_property_value(reply); for (i = 0; i < reply->value_len; i++) { name = get_atom_name(wm->conn, atom_value[i]); if (width + strlen(name) + 2 > 78) { fprintf(stderr, "\n "); width = 2; } else if (i > 0) { width += fprintf(stderr, ", "); } width += fprintf(stderr, "%s", name); } fprintf(stderr, "\n"); } else { fprintf(stderr, "huh?\n"); } } static void data_offer_accept(struct wl_client *client, struct wl_resource *resource, uint32_t time, const char *mime_type) { struct wlsc_data_source *source = resource->data; wl_resource_post_event(&source->resource, WL_DATA_SOURCE_TARGET, mime_type); } static void data_offer_receive(struct wl_client *client, struct wl_resource *resource, const char *mime_type, int32_t fd) { struct wlsc_data_source *source = resource->data; struct wlsc_wm *wm = source->data; if (strcmp(mime_type, "text/plain;charset=utf-8") == 0) { /* Get data for the utf8_string target */ xcb_convert_selection(wm->conn, wm->selection_window, wm->atom.clipboard, wm->atom.utf8_string, wm->atom.wl_selection, XCB_TIME_CURRENT_TIME); xcb_flush(wm->conn); fcntl(fd, F_SETFL, O_WRONLY | O_NONBLOCK); wm->data_source_fd = fd; } else { close(fd); } } static void data_offer_destroy(struct wl_client *client, struct wl_resource *resource) { wl_resource_destroy(resource, wlsc_compositor_get_time()); } static void destroy_data_offer(struct wl_resource *resource) { struct wlsc_data_source *source = resource->data; wlsc_data_source_unref(source); free(resource); } static const struct wl_data_offer_interface data_offer_interface = { data_offer_accept, data_offer_receive, data_offer_destroy, }; static struct wl_resource * data_source_create_offer(struct wlsc_data_source *source, struct wl_resource *target) { struct wl_resource *resource; resource = wl_client_new_object(target->client, &wl_data_offer_interface, &data_offer_interface, source); resource->destroy = destroy_data_offer; return resource; } static void data_source_cancel(struct wlsc_data_source *source) { } static void wlsc_wm_get_selection_targets(struct wlsc_wm *wm) { struct wlsc_data_source *source; struct wlsc_input_device *device; xcb_get_property_cookie_t cookie; xcb_get_property_reply_t *reply; xcb_atom_t *value; char **p; int i; cookie = xcb_get_property(wm->conn, 1, /* delete */ wm->selection_window, wm->atom.wl_selection, XCB_GET_PROPERTY_TYPE_ANY, 0, /* offset */ 4096 /* length */); reply = xcb_get_property_reply(wm->conn, cookie, NULL); dump_property(wm, wm->atom.wl_selection, reply); if (reply->type != XCB_ATOM_ATOM) { free(reply); return; } source = malloc(sizeof *source); if (source == NULL) return; wl_list_init(&source->resource.destroy_listener_list); source->create_offer = data_source_create_offer; source->cancel = data_source_cancel; source->data = wm; source->refcount = 1; wl_array_init(&source->mime_types); value = xcb_get_property_value(reply); for (i = 0; i < reply->value_len; i++) { if (value[i] == wm->atom.utf8_string) { p = wl_array_add(&source->mime_types, sizeof *p); if (p) *p = strdup("text/plain;charset=utf-8"); } } device = (struct wlsc_input_device *) wm->server->compositor->input_device; wlsc_input_device_set_selection(device, source, wlsc_compositor_get_time()); wlsc_data_source_unref(source); free(reply); } static int wlsc_wm_write_property(int fd, uint32_t mask, void *data) { struct wlsc_wm *wm = data; unsigned char *property; int len, remainder; property = xcb_get_property_value(wm->property_reply); remainder = xcb_get_property_value_length(wm->property_reply) - wm->property_start; len = write(fd, property + wm->property_start, remainder); if (len == -1) { free(wm->property_reply); wl_event_source_remove(wm->property_source); close(fd); fprintf(stderr, "write error to target fd: %m\n"); return 1; } fprintf(stderr, "wrote %d (chunk size %d) of %d bytes\n", wm->property_start + len, len, xcb_get_property_value_length(wm->property_reply)); wm->property_start += len; if (len == remainder) { free(wm->property_reply); wl_event_source_remove(wm->property_source); if (wm->incr) { xcb_delete_property(wm->conn, wm->selection_window, wm->atom.wl_selection); } else { fprintf(stderr, "transfer complete\n"); close(fd); } } return 1; } static void wlsc_wm_get_selection_data(struct wlsc_wm *wm) { xcb_get_property_cookie_t cookie; xcb_get_property_reply_t *reply; cookie = xcb_get_property(wm->conn, 1, /* delete */ wm->selection_window, wm->atom.wl_selection, XCB_GET_PROPERTY_TYPE_ANY, 0, /* offset */ 0x1fffffff /* length */); reply = xcb_get_property_reply(wm->conn, cookie, NULL); if (reply->type == wm->atom.incr) { dump_property(wm, wm->atom.wl_selection, reply); wm->incr = 1; free(reply); } else { dump_property(wm, wm->atom.wl_selection, reply); wm->incr = 0; wm->property_start = 0; wm->property_source = wl_event_loop_add_fd(wm->server->loop, wm->data_source_fd, WL_EVENT_WRITEABLE, wlsc_wm_write_property, wm); wm->property_reply = reply; } } static void wlsc_wm_get_incr_chunk(struct wlsc_wm *wm) { xcb_get_property_cookie_t cookie; xcb_get_property_reply_t *reply; cookie = xcb_get_property(wm->conn, 0, /* delete */ wm->selection_window, wm->atom.wl_selection, XCB_GET_PROPERTY_TYPE_ANY, 0, /* offset */ 0x1fffffff /* length */); reply = xcb_get_property_reply(wm->conn, cookie, NULL); dump_property(wm, wm->atom.wl_selection, reply); if (xcb_get_property_value_length(reply) > 0) { wm->property_start = 0; wm->property_source = wl_event_loop_add_fd(wm->server->loop, wm->data_source_fd, WL_EVENT_WRITEABLE, wlsc_wm_write_property, wm); wm->property_reply = reply; } else { fprintf(stderr, "transfer complete\n"); close(wm->data_source_fd); free(reply); } } static void wlsc_wm_handle_configure_request(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_configure_request_event_t *configure_request = (xcb_configure_request_event_t *) event; uint32_t values[16]; int i = 0; fprintf(stderr, "XCB_CONFIGURE_REQUEST\n"); if (configure_request->value_mask & XCB_CONFIG_WINDOW_X) values[i++] = configure_request->x; if (configure_request->value_mask & XCB_CONFIG_WINDOW_Y) values[i++] = configure_request->y; if (configure_request->value_mask & XCB_CONFIG_WINDOW_WIDTH) values[i++] = configure_request->width; if (configure_request->value_mask & XCB_CONFIG_WINDOW_HEIGHT) values[i++] = configure_request->height; if (configure_request->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) values[i++] = configure_request->border_width; if (configure_request->value_mask & XCB_CONFIG_WINDOW_SIBLING) values[i++] = configure_request->sibling; if (configure_request->value_mask & XCB_CONFIG_WINDOW_STACK_MODE) values[i++] = configure_request->stack_mode; xcb_configure_window(wm->conn, configure_request->window, configure_request->value_mask, values); } static void wlsc_wm_get_properties(struct wlsc_wm *wm, xcb_window_t window) { xcb_generic_error_t *e; xcb_get_property_reply_t *reply; int i; struct { xcb_atom_t atom; xcb_get_property_cookie_t cookie; } props[] = { { XCB_ATOM_WM_CLASS, }, { XCB_ATOM_WM_TRANSIENT_FOR }, { wm->atom.wm_protocols, }, { wm->atom.net_wm_name, }, }; for (i = 0; i < ARRAY_LENGTH(props); i++) props[i].cookie = xcb_get_property (wm->conn, 0, /* delete */ window, props[i].atom, XCB_ATOM_ANY, 0, 2048); for (i = 0; i < ARRAY_LENGTH(props); i++) { reply = xcb_get_property_reply(wm->conn, props[i].cookie, &e); dump_property(wm, props[i].atom, reply); free(reply); } } static void wlsc_wm_activate(struct wlsc_wm *wm, struct wlsc_wm_window *window, xcb_timestamp_t time) { xcb_client_message_event_t client_message; client_message.response_type = XCB_CLIENT_MESSAGE; client_message.format = 32; client_message.window = window->id; client_message.type = wm->atom.wm_protocols; client_message.data.data32[0] = wm->atom.wm_take_focus; client_message.data.data32[1] = XCB_TIME_CURRENT_TIME; xcb_send_event(wm->conn, 0, window->id, XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (char *) &client_message); xcb_set_input_focus (wm->conn, XCB_INPUT_FOCUS_POINTER_ROOT, window->id, time); } WL_EXPORT void wlsc_xserver_surface_activate(struct wlsc_surface *surface) { struct wlsc_wm_window *window = get_wm_window(surface); struct wlsc_xserver *wxs = surface->compositor->wxs; if (window) wlsc_wm_activate(wxs->wm, window, XCB_TIME_CURRENT_TIME); else if (wxs && wxs->wm) xcb_set_input_focus (wxs->wm->conn, XCB_INPUT_FOCUS_POINTER_ROOT, XCB_NONE, XCB_TIME_CURRENT_TIME); } static void wlsc_wm_handle_map_request(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_map_request_event_t *map_request = (xcb_map_request_event_t *) event; uint32_t values[1]; fprintf(stderr, "XCB_MAP_REQUEST\n"); wlsc_wm_get_properties(wm, map_request->window); values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE; xcb_change_window_attributes(wm->conn, map_request->window, XCB_CW_EVENT_MASK, values); xcb_map_window(wm->conn, map_request->window); } static void wlsc_wm_handle_map_notify(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_map_notify_event_t *map_notify = (xcb_map_notify_event_t *) event; struct wlsc_wm_window *window; fprintf(stderr, "XCB_MAP_NOTIFY\n"); wlsc_wm_get_properties(wm, map_notify->window); window = wl_hash_table_lookup(wm->window_hash, map_notify->window); wlsc_wm_activate(wm, window, XCB_TIME_CURRENT_TIME); } static void wlsc_wm_handle_property_notify(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_property_notify_event_t *property_notify = (xcb_property_notify_event_t *) event; if (property_notify->window == wm->selection_window) { if (property_notify->state == XCB_PROPERTY_NEW_VALUE && property_notify->atom == wm->atom.wl_selection && wm->incr) wlsc_wm_get_incr_chunk(wm); } else if (property_notify->atom == XCB_ATOM_WM_CLASS) { fprintf(stderr, "wm_class changed\n"); } else if (property_notify->atom == XCB_ATOM_WM_TRANSIENT_FOR) { fprintf(stderr, "wm_transient_for changed\n"); } else if (property_notify->atom == wm->atom.wm_protocols) { fprintf(stderr, "wm_protocols changed\n"); } else if (property_notify->atom == wm->atom.net_wm_name) { fprintf(stderr, "_net_wm_name changed\n"); } else if (property_notify->atom == wm->atom.net_wm_user_time) { fprintf(stderr, "_net_wm_user_time changed\n"); } else if (property_notify->atom == wm->atom.net_wm_icon_name) { fprintf(stderr, "_net_wm_icon_name changed\n"); } else if (property_notify->atom == XCB_ATOM_WM_NAME) { fprintf(stderr, "wm_name changed\n"); } else if (property_notify->atom == XCB_ATOM_WM_ICON_NAME) { fprintf(stderr, "wm_icon_name changed\n"); } else { fprintf(stderr, "XCB_PROPERTY_NOTIFY: " "unhandled property change: %s\n", get_atom_name(wm->conn, property_notify->atom)); } } static void wlsc_wm_handle_create_notify(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_create_notify_event_t *create_notify = (xcb_create_notify_event_t *) event; struct wlsc_wm_window *window; fprintf(stderr, "XCB_CREATE_NOTIFY, win %d\n", create_notify->window); window = malloc(sizeof *window); if (window == NULL) { fprintf(stderr, "failed to allocate window\n"); return; } window->id = create_notify->window; wl_hash_table_insert(wm->window_hash, window->id, window); fprintf(stderr, "created window %p\n", window); } static void wlsc_wm_handle_destroy_notify(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_destroy_notify_event_t *destroy_notify = (xcb_destroy_notify_event_t *) event; struct wlsc_wm_window *window; fprintf(stderr, "XCB_DESTROY_NOTIFY, win %d\n", destroy_notify->window); window = wl_hash_table_lookup(wm->window_hash, destroy_notify->window); if (window == NULL) { fprintf(stderr, "destroy notify for unknow window %d\n", destroy_notify->window); return; } fprintf(stderr, "destroy window %p\n", window); wl_hash_table_remove(wm->window_hash, window->id); free(window); } static void wlsc_wm_handle_selection_notify(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_selection_notify_event_t *selection_notify = (xcb_selection_notify_event_t *) event; if (selection_notify->property == XCB_ATOM_NONE) { /* convert selection failed */ } else if (selection_notify->target == wm->atom.targets) { wlsc_wm_get_selection_targets(wm); } else { wlsc_wm_get_selection_data(wm); } } static void wlsc_wm_handle_xfixes_selection_notify(struct wlsc_wm *wm, xcb_generic_event_t *event) { xcb_xfixes_selection_notify_event_t *xfixes_selection_notify = (xcb_xfixes_selection_notify_event_t *) event; printf("xfixes selection notify event: owner %d\n", xfixes_selection_notify->owner); xcb_convert_selection(wm->conn, wm->selection_window, wm->atom.clipboard, wm->atom.targets, wm->atom.wl_selection, XCB_TIME_CURRENT_TIME); xcb_flush(wm->conn); } static int wlsc_wm_handle_event(int fd, uint32_t mask, void *data) { struct wlsc_wm *wm = data; xcb_generic_event_t *event; int count = 0; while (event = xcb_poll_for_event(wm->conn), event != NULL) { switch (event->response_type & ~0x80) { case XCB_CREATE_NOTIFY: wlsc_wm_handle_create_notify(wm, event); break; case XCB_MAP_REQUEST: wlsc_wm_handle_map_request(wm, event); break; case XCB_MAP_NOTIFY: wlsc_wm_handle_map_notify(wm, event); break; case XCB_UNMAP_NOTIFY: fprintf(stderr, "XCB_UNMAP_NOTIFY\n"); break; case XCB_CONFIGURE_REQUEST: wlsc_wm_handle_configure_request(wm, event); break; case XCB_CONFIGURE_NOTIFY: fprintf(stderr, "XCB_CONFIGURE_NOTIFY\n"); break; case XCB_DESTROY_NOTIFY: wlsc_wm_handle_destroy_notify(wm, event); break; case XCB_MAPPING_NOTIFY: fprintf(stderr, "XCB_MAPPING_NOTIFY\n"); break; case XCB_PROPERTY_NOTIFY: wlsc_wm_handle_property_notify(wm, event); break; case XCB_SELECTION_NOTIFY: wlsc_wm_handle_selection_notify(wm, event); break; } switch (event->response_type - wm->xfixes->first_event) { case XCB_XFIXES_SELECTION_NOTIFY: wlsc_wm_handle_xfixes_selection_notify(wm, event); break; } free(event); count++; } xcb_flush(wm->conn); return count; } static void wxs_wm_get_resources(struct wlsc_wm *wm) { #define F(field) offsetof(struct wlsc_wm, field) static const struct { const char *name; int offset; } atoms[] = { { "WM_PROTOCOLS", F(atom.wm_protocols) }, { "WM_TAKE_FOCUS", F(atom.wm_take_focus) }, { "WM_DELETE_WINDOW", F(atom.wm_delete_window) }, { "_NET_WM_NAME", F(atom.net_wm_name) }, { "_NET_WM_ICON", F(atom.net_wm_icon) }, { "_NET_WM_STATE", F(atom.net_wm_state) }, { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) }, { "_NET_WM_USER_TIME", F(atom.net_wm_user_time) }, { "_NET_WM_ICON_NAME", F(atom.net_wm_icon_name) }, { "CLIPBOARD", F(atom.clipboard) }, { "TARGETS", F(atom.targets) }, { "UTF8_STRING", F(atom.utf8_string) }, { "_WL_SELECTION", F(atom.wl_selection) }, { "INCR", F(atom.incr) }, { "TIMESTAMP", F(atom.timestamp) }, { "MULTIPLE", F(atom.multiple) }, { "UTF8_STRING" , F(atom.utf8_string) }, { "COMPOUND_TEXT", F(atom.compound_text) }, { "TEXT", F(atom.text) }, { "STRING", F(atom.string) }, { "text/plain;charset=utf-8", F(atom.text_plain_utf8) }, { "text/plain", F(atom.text_plain) }, }; xcb_xfixes_query_version_cookie_t xfixes_cookie; xcb_xfixes_query_version_reply_t *xfixes_reply; xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)]; xcb_intern_atom_reply_t *reply; int i; xcb_prefetch_extension_data (wm->conn, &xcb_xfixes_id); for (i = 0; i < ARRAY_LENGTH(atoms); i++) cookies[i] = xcb_intern_atom (wm->conn, 0, strlen(atoms[i].name), atoms[i].name); for (i = 0; i < ARRAY_LENGTH(atoms); i++) { reply = xcb_intern_atom_reply (wm->conn, cookies[i], NULL); *(xcb_atom_t *) ((char *) wm + atoms[i].offset) = reply->atom; free(reply); } wm->xfixes = xcb_get_extension_data(wm->conn, &xcb_xfixes_id); if (!wm->xfixes || !wm->xfixes->present) fprintf(stderr, "xfixes not available\n"); xfixes_cookie = xcb_xfixes_query_version(wm->conn, XCB_XFIXES_MAJOR_VERSION, XCB_XFIXES_MINOR_VERSION); xfixes_reply = xcb_xfixes_query_version_reply(wm->conn, xfixes_cookie, NULL); printf("xfixes version: %d.%d\n", xfixes_reply->major_version, xfixes_reply->minor_version); free(xfixes_reply); } static struct wlsc_wm * wlsc_wm_create(struct wlsc_xserver *wxs) { struct wlsc_wm *wm; struct wl_event_loop *loop; xcb_screen_iterator_t s; uint32_t values[1], mask; int sv[2]; wm = malloc(sizeof *wm); if (wm == NULL) return NULL; wm->server = wxs; wm->window_hash = wl_hash_table_create(); if (wm->window_hash == NULL) { free(wm); return NULL; } if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) { fprintf(stderr, "socketpair failed\n"); wl_hash_table_destroy(wm->window_hash); free(wm); return NULL; } wl_resource_post_event(wxs->resource, XSERVER_CLIENT, sv[1]); wl_client_flush(wxs->resource->client); close(sv[1]); /* xcb_connect_to_fd takes ownership of the fd. */ wm->conn = xcb_connect_to_fd(sv[0], NULL); if (xcb_connection_has_error(wm->conn)) { fprintf(stderr, "xcb_connect_to_fd failed\n"); close(sv[0]); wl_hash_table_destroy(wm->window_hash); free(wm); return NULL; } s = xcb_setup_roots_iterator(xcb_get_setup(wm->conn)); wm->screen = s.data; loop = wl_display_get_event_loop(wxs->wl_display); wm->source = wl_event_loop_add_fd(loop, sv[0], WL_EVENT_READABLE, wlsc_wm_handle_event, wm); wl_event_source_check(wm->source); wxs_wm_get_resources(wm); values[0] = XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_RESIZE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_PROPERTY_CHANGE; xcb_change_window_attributes(wm->conn, wm->screen->root, XCB_CW_EVENT_MASK, values); wm->selection_window = xcb_generate_id(wm->conn); xcb_create_window(wm->conn, XCB_COPY_FROM_PARENT, wm->selection_window, wm->screen->root, 0, 0, 10, 10, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, wm->screen->root_visual, XCB_CW_EVENT_MASK, values); 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(wm->conn, wm->selection_window, wm->atom.clipboard, mask); xcb_flush(wm->conn); fprintf(stderr, "created wm\n"); return wm; } static void wlsc_wm_destroy(struct wlsc_wm *wm) { /* FIXME: Free windows in hash. */ wl_hash_table_destroy(wm->window_hash); xcb_disconnect(wm->conn); wl_event_source_remove(wm->source); free(wm); } static int wlsc_xserver_handle_event(int listen_fd, uint32_t mask, void *data) { struct wlsc_xserver *mxs = data; char display[8], s[8], logfile[32]; int sv[2], flags; if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) { fprintf(stderr, "socketpair failed\n"); return 1; } mxs->process.pid = fork(); switch (mxs->process.pid) { case 0: /* SOCK_CLOEXEC closes both ends, so we need to unset * the flag on the client fd. */ flags = fcntl(sv[1], F_GETFD); if (flags != -1) fcntl(sv[1], F_SETFD, flags & ~FD_CLOEXEC); snprintf(s, sizeof s, "%d", sv[1]); setenv("WAYLAND_SOCKET", s, 1); snprintf(display, sizeof display, ":%d", mxs->display); snprintf(logfile, sizeof logfile, "/tmp/x-log-%d", mxs->display); if (execl(XSERVER_PATH, XSERVER_PATH, display, "-wayland", "-rootless", "-retro", "-logfile", logfile, "-nolisten", "all", "-terminate", NULL) < 0) fprintf(stderr, "exec failed: %m\n"); exit(-1); default: fprintf(stderr, "forked X server, pid %d\n", mxs->process.pid); close(sv[1]); mxs->client = wl_client_create(mxs->wl_display, sv[0]); wlsc_watch_process(&mxs->process); wl_event_source_remove(mxs->abstract_source); wl_event_source_remove(mxs->unix_source); break; case -1: fprintf(stderr, "failed to fork\n"); break; } return 1; } static void wlsc_xserver_shutdown(struct wlsc_xserver *wxs) { char path[256]; snprintf(path, sizeof path, "/tmp/.X%d-lock", wxs->display); unlink(path); snprintf(path, sizeof path, "/tmp/.X11-unix/X%d", wxs->display); unlink(path); if (wxs->process.pid == 0) { wl_event_source_remove(wxs->abstract_source); wl_event_source_remove(wxs->unix_source); } close(wxs->abstract_fd); close(wxs->unix_fd); if (wxs->wm) wlsc_wm_destroy(wxs->wm); wxs->loop = NULL; } static void wlsc_xserver_cleanup(struct wlsc_process *process, int status) { struct wlsc_xserver *mxs = container_of(process, struct wlsc_xserver, process); mxs->process.pid = 0; mxs->client = NULL; mxs->resource = NULL; mxs->abstract_source = wl_event_loop_add_fd(mxs->loop, mxs->abstract_fd, WL_EVENT_READABLE, wlsc_xserver_handle_event, mxs); mxs->unix_source = wl_event_loop_add_fd(mxs->loop, mxs->unix_fd, WL_EVENT_READABLE, wlsc_xserver_handle_event, mxs); if (mxs->wm) { fprintf(stderr, "xserver exited, code %d\n", status); wlsc_wm_destroy(mxs->wm); mxs->wm = NULL; } else { /* If the X server crashes before it binds to the * xserver interface, shut down and don't try * again. */ fprintf(stderr, "xserver crashing too fast: %d\n", status); wlsc_xserver_shutdown(mxs); } } static void surface_destroy(struct wl_listener *listener, struct wl_resource *resource, uint32_t time) { struct wlsc_wm_window *window = container_of(listener, struct wlsc_wm_window, surface_destroy_listener); fprintf(stderr, "surface for xid %d destroyed\n", window->id); } static struct wlsc_wm_window * get_wm_window(struct wlsc_surface *surface) { struct wl_resource *resource = &surface->surface.resource; struct wl_listener *listener; wl_list_for_each(listener, &resource->destroy_listener_list, link) { if (listener->func == surface_destroy) return container_of(listener, struct wlsc_wm_window, surface_destroy_listener); } return NULL; } static void xserver_set_window_id(struct wl_client *client, struct wl_resource *resource, struct wl_resource *surface_resource, uint32_t id) { struct wlsc_xserver *wxs = resource->data; struct wlsc_wm *wm = wxs->wm; struct wl_surface *surface = surface_resource->data; struct wlsc_wm_window *window; if (client != wxs->client) return; window = wl_hash_table_lookup(wm->window_hash, id); if (window == NULL) { fprintf(stderr, "set_window_id for unknown window %d\n", id); return; } fprintf(stderr, "set_window_id %d for surface %p\n", id, surface); window->surface = (struct wlsc_surface *) surface; window->surface_destroy_listener.func = surface_destroy; wl_list_insert(surface->resource.destroy_listener_list.prev, &window->surface_destroy_listener.link); } static const struct xserver_interface xserver_implementation = { xserver_set_window_id }; static void bind_xserver(struct wl_client *client, void *data, uint32_t version, uint32_t id) { struct wlsc_xserver *wxs = data; /* If it's a different client than the xserver we launched, * don't start the wm. */ if (client != wxs->client) return; wxs->resource = wl_client_add_object(client, &xserver_interface, &xserver_implementation, id, wxs); wxs->wm = wlsc_wm_create(wxs); if (wxs->wm == NULL) { fprintf(stderr, "failed to create wm\n"); } wl_resource_post_event(wxs->resource, XSERVER_LISTEN_SOCKET, wxs->abstract_fd); wl_resource_post_event(wxs->resource, XSERVER_LISTEN_SOCKET, wxs->unix_fd); } static int bind_to_abstract_socket(int display) { struct sockaddr_un addr; socklen_t size, name_size; int fd; fd = socket(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0); if (fd < 0) return -1; addr.sun_family = AF_LOCAL; name_size = snprintf(addr.sun_path, sizeof addr.sun_path, "%c/tmp/.X11-unix/X%d", 0, display); size = offsetof(struct sockaddr_un, sun_path) + name_size; if (bind(fd, (struct sockaddr *) &addr, size) < 0) { fprintf(stderr, "failed to bind to @%s: %s\n", addr.sun_path + 1, strerror(errno)); close(fd); return -1; } if (listen(fd, 1) < 0) { close(fd); return -1; } return fd; } static int bind_to_unix_socket(int display) { struct sockaddr_un addr; socklen_t size, name_size; int fd; fd = socket(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0); if (fd < 0) return -1; addr.sun_family = AF_LOCAL; name_size = snprintf(addr.sun_path, sizeof addr.sun_path, "/tmp/.X11-unix/X%d", display) + 1; size = offsetof(struct sockaddr_un, sun_path) + name_size; unlink(addr.sun_path); if (bind(fd, (struct sockaddr *) &addr, size) < 0) { fprintf(stderr, "failed to bind to %s (%s)\n", addr.sun_path, strerror(errno)); close(fd); return -1; } if (listen(fd, 1) < 0) { unlink(addr.sun_path); close(fd); return -1; } return fd; } static int create_lockfile(int display, char *lockfile, size_t lsize) { char pid[16], *end; int fd, size; pid_t other; snprintf(lockfile, lsize, "/tmp/.X%d-lock", display); fd = open(lockfile, O_WRONLY | O_CLOEXEC | O_CREAT | O_EXCL, 0444); if (fd < 0 && errno == EEXIST) { fd = open(lockfile, O_CLOEXEC, O_RDONLY); if (fd < 0 || read(fd, pid, 11) != 11) { fprintf(stderr, "can't read lock file %s: %s\n", lockfile, strerror(errno)); errno = EEXIST; return -1; } other = strtol(pid, &end, 0); if (end != pid + 10) { fprintf(stderr, "can't parse lock file %s\n", lockfile); errno = EEXIST; return -1; } if (kill(other, 0) < 0 && errno == ESRCH) { /* stale lock file; unlink and try again */ fprintf(stderr, "unlinking stale lock file %s\n", lockfile); unlink(lockfile); errno = EAGAIN; return -1; } errno = EEXIST; return -1; } else if (fd < 0) { fprintf(stderr, "failed to create lock file %s: %s\n", lockfile, strerror(errno)); return -1; } /* Subtle detail: we use the pid of the wayland * compositor, not the xserver in the lock file. */ size = snprintf(pid, sizeof pid, "%10d\n", getpid()); if (write(fd, pid, size) != size) { unlink(lockfile); close(fd); return -1; } close(fd); return 0; } int wlsc_xserver_init(struct wlsc_compositor *compositor) { struct wl_display *display = compositor->wl_display; struct wlsc_xserver *mxs; char lockfile[256]; mxs = malloc(sizeof *mxs); memset(mxs, 0, sizeof *mxs); mxs->process.cleanup = wlsc_xserver_cleanup; mxs->wl_display = display; mxs->compositor = compositor; mxs->display = 0; retry: if (create_lockfile(mxs->display, lockfile, sizeof lockfile) < 0) { if (errno == EAGAIN) { goto retry; } else if (errno == EEXIST) { mxs->display++; goto retry; } else { free(mxs); return -1; } } mxs->abstract_fd = bind_to_abstract_socket(mxs->display); if (mxs->abstract_fd < 0 && errno == EADDRINUSE) { mxs->display++; unlink(lockfile); goto retry; } mxs->unix_fd = bind_to_unix_socket(mxs->display); if (mxs->unix_fd < 0) { unlink(lockfile); close(mxs->abstract_fd); free(mxs); return -1; } fprintf(stderr, "xserver listening on display :%d\n", mxs->display); mxs->loop = wl_display_get_event_loop(display); mxs->abstract_source = wl_event_loop_add_fd(mxs->loop, mxs->abstract_fd, WL_EVENT_READABLE, wlsc_xserver_handle_event, mxs); mxs->unix_source = wl_event_loop_add_fd(mxs->loop, mxs->unix_fd, WL_EVENT_READABLE, wlsc_xserver_handle_event, mxs); wl_display_add_global(display, &xserver_interface, mxs, bind_xserver); compositor->wxs = mxs; return 0; } void wlsc_xserver_destroy(struct wlsc_compositor *compositor) { struct wlsc_xserver *wxs = compositor->wxs; if (!wxs) return; if (wxs->loop) wlsc_xserver_shutdown(wxs); free(wxs); }