1 /* Copyright (c) 2012, Bastien Dejean
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
17 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
20 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/types.h>
31 #include <sys/socket.h>
37 #include <xcb/xinerama.h>
54 int main(int argc, char *argv[])
57 char socket_path[MAXLEN];
58 char state_path[MAXLEN] = {0};
59 config_path[0] = '\0';
60 int sock_fd = -1, cli_fd, dpy_fd, max_fd, n;
61 struct sockaddr_un sock_address;
62 char msg[BUFSIZ] = {0};
63 xcb_generic_event_t *event;
67 while ((opt = getopt(argc, argv, "hvc:s:o:")) != -1) {
70 printf(WM_NAME " [-h|-v|-c CONFIG_PATH]\n");
74 printf("%s\n", VERSION);
78 snprintf(config_path, sizeof(config_path), "%s", optarg);
81 snprintf(state_path, sizeof(state_path), "%s", optarg);
84 sock_fd = strtol(optarg, &end, 0);
92 if (config_path[0] == '\0') {
93 char *config_home = getenv(CONFIG_HOME_ENV);
94 if (config_home != NULL) {
95 snprintf(config_path, sizeof(config_path), "%s/%s/%s", config_home, WM_NAME, CONFIG_NAME);
97 snprintf(config_path, sizeof(config_path), "%s/%s/%s/%s", getenv("HOME"), ".config", WM_NAME, CONFIG_NAME);
101 dpy = xcb_connect(NULL, &default_screen);
103 if (!check_connection(dpy)) {
110 if (state_path[0] != '\0') {
111 restore_state(state_path);
115 dpy_fd = xcb_get_file_descriptor(dpy);
118 char *sp = getenv(SOCKET_ENV_VAR);
120 snprintf(socket_path, sizeof(socket_path), "%s", sp);
124 if (xcb_parse_display(NULL, &host, &dn, &sn) != 0) {
125 snprintf(socket_path, sizeof(socket_path), SOCKET_PATH_TPL, host, dn, sn);
130 sock_address.sun_family = AF_UNIX;
131 snprintf(sock_address.sun_path, sizeof(sock_address.sun_path), "%s", socket_path);
133 sock_fd = socket(AF_UNIX, SOCK_STREAM, 0);
136 err("Couldn't create the socket.\n");
141 if (bind(sock_fd, (struct sockaddr *) &sock_address, sizeof(sock_address)) == -1) {
142 err("Couldn't bind a name to the socket.\n");
145 if (listen(sock_fd, SOMAXCONN) == -1) {
146 err("Couldn't listen to the socket.\n");
150 signal(SIGINT, sig_handler);
151 signal(SIGHUP, sig_handler);
152 signal(SIGTERM, sig_handler);
153 signal(SIGCHLD, sig_handler);
154 signal(SIGPIPE, SIG_IGN);
162 FD_ZERO(&descriptors);
163 FD_SET(sock_fd, &descriptors);
164 FD_SET(dpy_fd, &descriptors);
165 max_fd = MAX(sock_fd, dpy_fd);
167 for (pending_rule_t *pr = pending_rule_head; pr != NULL; pr = pr->next) {
168 FD_SET(pr->fd, &descriptors);
169 if (pr->fd > max_fd) {
174 if (select(max_fd + 1, &descriptors, NULL, NULL, NULL) > 0) {
176 pending_rule_t *pr = pending_rule_head;
178 pending_rule_t *next = pr->next;
179 if (FD_ISSET(pr->fd, &descriptors)) {
180 if (manage_window(pr->win, pr->csq, pr->fd)) {
181 for (event_queue_t *eq = pr->event_head; eq != NULL; eq = eq->next) {
182 handle_event(&eq->event);
185 remove_pending_rule(pr);
190 if (FD_ISSET(sock_fd, &descriptors)) {
191 cli_fd = accept(sock_fd, NULL, 0);
192 if (cli_fd > 0 && (n = recv(cli_fd, msg, sizeof(msg)-1, 0)) > 0) {
194 FILE *rsp = fdopen(cli_fd, "w");
196 handle_message(msg, n, rsp);
198 warn("Can't open the client socket as file.\n");
204 if (FD_ISSET(dpy_fd, &descriptors)) {
205 while ((event = xcb_poll_for_event(dpy)) != NULL) {
213 if (!check_connection(dpy)) {
221 if (xcb_parse_display(NULL, &host, &dn, &sn) != 0) {
222 snprintf(state_path, sizeof(state_path), STATE_PATH_TPL, host, dn, sn);
225 FILE *f = fopen(state_path, "w");
232 xcb_ewmh_connection_wipe(ewmh);
233 xcb_destroy_window(dpy, meta_window);
234 xcb_destroy_window(dpy, motion_recorder.id);
241 for (rargc = 0; rargc < argc; rargc++) {
242 if (streq("-s", argv[rargc])) {
248 char **rargv = malloc(len * sizeof(char *));
250 for (int i = 0; i < rargc; i++) {
254 char sock_fd_arg[SMALEN];
255 snprintf(sock_fd_arg, sizeof(sock_fd_arg), "%i", sock_fd);
258 rargv[rargc + 1] = state_path;
259 rargv[rargc + 2] = "-o";
260 rargv[rargc + 3] = sock_fd_arg;
261 rargv[rargc + 4] = 0;
263 exit_status = execvp(*rargv, rargv);
276 mon = mon_head = mon_tail = pri_mon = NULL;
277 history_head = history_tail = history_needle = NULL;
278 rule_head = rule_tail = NULL;
279 stack_head = stack_tail = NULL;
280 subscribe_head = subscribe_tail = NULL;
281 pending_rule_head = pending_rule_tail = NULL;
282 auto_raise = sticky_still = hide_sticky = record_history = true;
294 screen = xcb_setup_roots_iterator(xcb_get_setup(dpy)).data;
296 if (screen == NULL) {
297 err("Can't acquire the default screen.\n");
303 screen_width = screen->width_in_pixels;
304 screen_height = screen->height_in_pixels;
306 meta_window = xcb_generate_id(dpy);
307 xcb_create_window(dpy, XCB_COPY_FROM_PARENT, meta_window, root, -1, -1, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_ONLY, XCB_COPY_FROM_PARENT, XCB_NONE, NULL);
308 xcb_icccm_set_wm_class(dpy, meta_window, sizeof(META_WINDOW_IC), META_WINDOW_IC);
310 motion_recorder.id = xcb_generate_id(dpy);
311 motion_recorder.sequence = 0;
312 motion_recorder.enabled = false;
313 uint32_t values[] = {XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_POINTER_MOTION};
314 xcb_create_window(dpy, XCB_COPY_FROM_PARENT, motion_recorder.id, root, 0, 0, 1, 1, 0,
315 XCB_WINDOW_CLASS_INPUT_ONLY, XCB_COPY_FROM_PARENT, XCB_CW_EVENT_MASK, values);
316 xcb_icccm_set_wm_class(dpy, motion_recorder.id, sizeof(MOTION_RECORDER_IC), MOTION_RECORDER_IC);
318 xcb_atom_t net_atoms[] = {ewmh->_NET_SUPPORTED,
319 ewmh->_NET_SUPPORTING_WM_CHECK,
320 ewmh->_NET_DESKTOP_NAMES,
321 ewmh->_NET_DESKTOP_VIEWPORT,
322 ewmh->_NET_NUMBER_OF_DESKTOPS,
323 ewmh->_NET_CURRENT_DESKTOP,
324 ewmh->_NET_CLIENT_LIST,
325 ewmh->_NET_ACTIVE_WINDOW,
326 ewmh->_NET_CLOSE_WINDOW,
327 ewmh->_NET_WM_STRUT_PARTIAL,
328 ewmh->_NET_WM_DESKTOP,
330 ewmh->_NET_WM_STATE_HIDDEN,
331 ewmh->_NET_WM_STATE_FULLSCREEN,
332 ewmh->_NET_WM_STATE_BELOW,
333 ewmh->_NET_WM_STATE_ABOVE,
334 ewmh->_NET_WM_STATE_STICKY,
335 ewmh->_NET_WM_STATE_DEMANDS_ATTENTION,
336 ewmh->_NET_WM_WINDOW_TYPE,
337 ewmh->_NET_WM_WINDOW_TYPE_DOCK,
338 ewmh->_NET_WM_WINDOW_TYPE_DESKTOP,
339 ewmh->_NET_WM_WINDOW_TYPE_NOTIFICATION,
340 ewmh->_NET_WM_WINDOW_TYPE_DIALOG,
341 ewmh->_NET_WM_WINDOW_TYPE_UTILITY,
342 ewmh->_NET_WM_WINDOW_TYPE_TOOLBAR};
344 xcb_ewmh_set_supported(ewmh, default_screen, LENGTH(net_atoms), net_atoms);
345 ewmh_set_supporting(meta_window);
350 GETATOM(WM_DELETE_WINDOW)
351 GETATOM(WM_TAKE_FOCUS)
354 const xcb_query_extension_reply_t *qep = xcb_get_extension_data(dpy, &xcb_randr_id);
355 if (qep->present && update_monitors()) {
357 randr_base = qep->first_event;
358 xcb_randr_select_input(dpy, root, XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE);
361 warn("Couldn't retrieve monitors via RandR.\n");
362 bool xinerama_is_active = false;
364 if (xcb_get_extension_data(dpy, &xcb_xinerama_id)->present) {
365 xcb_xinerama_is_active_reply_t *xia = xcb_xinerama_is_active_reply(dpy, xcb_xinerama_is_active(dpy), NULL);
367 xinerama_is_active = xia->state;
372 if (xinerama_is_active) {
373 xcb_xinerama_query_screens_reply_t *xsq = xcb_xinerama_query_screens_reply(dpy, xcb_xinerama_query_screens(dpy), NULL);
374 xcb_xinerama_screen_info_t *xsi = xcb_xinerama_query_screens_screen_info(xsq);
375 int n = xcb_xinerama_query_screens_screen_info_length(xsq);
376 for (int i = 0; i < n; i++) {
377 xcb_xinerama_screen_info_t info = xsi[i];
378 xcb_rectangle_t rect = (xcb_rectangle_t) {info.x_org, info.y_org, info.width, info.height};
379 monitor_t *m = make_monitor(NULL, &rect, XCB_NONE);
381 add_desktop(m, make_desktop(NULL, XCB_NONE));
385 warn("Xinerama is inactive.\n");
386 xcb_rectangle_t rect = (xcb_rectangle_t) {0, 0, screen_width, screen_height};
387 monitor_t *m = make_monitor(NULL, &rect, XCB_NONE);
389 add_desktop(m, make_desktop(NULL, XCB_NONE));
393 ewmh_update_number_of_desktops();
394 ewmh_update_desktop_names();
395 ewmh_update_desktop_viewport();
396 ewmh_update_current_desktop();
397 xcb_get_input_focus_reply_t *ifo = xcb_get_input_focus_reply(dpy, xcb_get_input_focus(dpy), NULL);
398 if (ifo != NULL && (ifo->focus == XCB_INPUT_FOCUS_POINTER_ROOT || ifo->focus == XCB_NONE)) {
404 void register_events(void)
406 uint32_t values[] = {ROOT_EVENT_MASK};
407 xcb_generic_error_t *e = xcb_request_check(dpy, xcb_change_window_attributes_checked(dpy, root, XCB_CW_EVENT_MASK, values));
410 xcb_ewmh_connection_wipe(ewmh);
413 err("Another window manager is already running.\n");
421 while (mon_head != NULL) {
422 remove_monitor(mon_head);
424 while (rule_head != NULL) {
425 remove_rule(rule_head);
427 while (subscribe_head != NULL) {
428 remove_subscriber(subscribe_head);
430 while (pending_rule_head != NULL) {
431 remove_pending_rule(pending_rule_head);
437 bool check_connection (xcb_connection_t *dpy)
440 if ((xerr = xcb_connection_has_error(dpy)) != 0) {
441 warn("The server closed the connection: ");
444 warn("socket, pipe or stream error.\n");
446 case XCB_CONN_CLOSED_EXT_NOTSUPPORTED:
447 warn("unsupported extension.\n");
449 case XCB_CONN_CLOSED_MEM_INSUFFICIENT:
450 warn("not enough memory.\n");
452 case XCB_CONN_CLOSED_REQ_LEN_EXCEED:
453 warn("request length exceeded.\n");
455 case XCB_CONN_CLOSED_PARSE_ERR:
456 warn("can't parse display string.\n");
458 case XCB_CONN_CLOSED_INVALID_SCREEN:
459 warn("invalid screen.\n");
461 case XCB_CONN_CLOSED_FDPASSING_FAILED:
462 warn("failed to pass FD.\n");
465 warn("unknown error.\n");
474 void sig_handler(int sig)
476 if (sig == SIGCHLD) {
477 signal(sig, sig_handler);
478 while (waitpid(-1, 0, WNOHANG) > 0)
480 } else if (sig == SIGINT || sig == SIGHUP || sig == SIGTERM) {