2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2011 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * startup.c: Startup notification code
13 #include <sys/types.h>
16 #define SN_API_NOT_YET_FROZEN 1
17 #include <libsn/sn-launcher.h>
21 static TAILQ_HEAD(startup_sequence_head, Startup_Sequence) startup_sequences =
22 TAILQ_HEAD_INITIALIZER(startup_sequences);
25 * After 60 seconds, a timeout will be triggered for each startup sequence.
27 * The timeout will just trigger completion of the sequence, so the normal
28 * completion process takes place (startup_monitor_event will free it).
31 static void startup_timeout(EV_P_ ev_timer *w, int revents) {
32 const char *id = sn_launcher_context_get_startup_id(w->data);
33 DLOG("Timeout for startup sequence %s\n", id);
35 struct Startup_Sequence *current, *sequence = NULL;
36 TAILQ_FOREACH(current, &startup_sequences, sequences) {
37 if (strcmp(current->id, id) != 0)
44 /* Unref the context (for the timeout itself, see start_application) */
45 sn_launcher_context_unref(w->data);
48 DLOG("Sequence already deleted, nevermind.\n");
52 /* Complete the startup sequence, will trigger its deletion. */
53 sn_launcher_context_complete(w->data);
58 * Starts the given application by passing it through a shell. We use double fork
59 * to avoid zombie processes. As the started application’s parent exits (immediately),
60 * the application is reparented to init (process-id 1), which correctly handles
61 * childs, so we don’t have to do it :-).
63 * The shell is determined by looking for the SHELL environment variable. If it
64 * does not exist, /bin/sh is used.
67 void start_application(const char *command) {
68 /* Create a startup notification context to monitor the progress of this
70 SnLauncherContext *context;
71 context = sn_launcher_context_new(sndisplay, conn_screen);
72 sn_launcher_context_set_name(context, "i3");
73 sn_launcher_context_set_description(context, "exec command in i3");
74 /* Chop off everything starting from the first space (if there are any
75 * spaces in the command), since we don’t want the parameters. */
76 char *first_word = sstrdup(command);
77 char *space = strchr(first_word, ' ');
80 sn_launcher_context_initiate(context, "i3", first_word, last_timestamp);
83 /* Trigger a timeout after 60 seconds */
84 struct ev_timer *timeout = scalloc(sizeof(struct ev_timer));
85 ev_timer_init(timeout, startup_timeout, 60.0, 0.);
86 timeout->data = context;
87 ev_timer_start(main_loop, timeout);
89 LOG("startup id = %s\n", sn_launcher_context_get_startup_id(context));
91 /* Save the ID and current workspace in our internal list of startup
93 Con *ws = con_get_workspace(focused);
94 struct Startup_Sequence *sequence = scalloc(sizeof(struct Startup_Sequence));
95 sequence->id = sstrdup(sn_launcher_context_get_startup_id(context));
96 sequence->workspace = sstrdup(ws->name);
97 sequence->context = context;
98 TAILQ_INSERT_TAIL(&startup_sequences, sequence, sequences);
100 /* Increase the refcount once (it starts with 1, so it will be 2 now) for
101 * the timeout. Even if the sequence gets completed, the timeout still
102 * needs the context (but will unref it then) */
103 sn_launcher_context_ref(context);
105 LOG("executing: %s\n", command);
110 /* Setup the environment variable(s) */
111 sn_launcher_context_setup_child_process(context);
113 /* Stores the path of the shell */
114 static const char *shell = NULL;
117 if ((shell = getenv("SHELL")) == NULL)
120 /* This is the child */
121 execl(shell, shell, "-c", command, (void*)NULL);
130 * Called by libstartup-notification when something happens
133 void startup_monitor_event(SnMonitorEvent *event, void *userdata) {
134 SnStartupSequence *snsequence;
136 snsequence = sn_monitor_event_get_startup_sequence(event);
138 /* Get the corresponding internal startup sequence */
139 const char *id = sn_startup_sequence_get_id(snsequence);
140 struct Startup_Sequence *current, *sequence = NULL;
141 TAILQ_FOREACH(current, &startup_sequences, sequences) {
142 if (strcmp(current->id, id) != 0)
150 DLOG("Got event for startup sequence that we did not initiate (ID = %s). Ignoring.\n", id);
154 switch (sn_monitor_event_get_type(event)) {
155 case SN_MONITOR_EVENT_COMPLETED:
156 DLOG("startup sequence %s completed\n", sn_startup_sequence_get_id(snsequence));
158 /* Unref the context, will be free()d */
159 sn_launcher_context_unref(sequence->context);
161 /* Delete our internal sequence */
162 TAILQ_REMOVE(&startup_sequences, sequence, sequences);
171 * Checks if the given window belongs to a startup notification by checking if
172 * the _NET_STARTUP_ID property is set on the window (or on its leader, if it’s
175 * If so, returns the workspace on which the startup was initiated.
176 * Returns NULL otherwise.
179 char *startup_workspace_for_window(i3Window *cwindow, xcb_get_property_reply_t *startup_id_reply) {
180 /* The _NET_STARTUP_ID is only needed during this function, so we get it
181 * here and don’t save it in the 'cwindow'. */
182 if (startup_id_reply == NULL || xcb_get_property_value_length(startup_id_reply) == 0) {
183 FREE(startup_id_reply);
184 DLOG("No _NET_STARTUP_ID set on this window\n");
185 if (cwindow->leader == XCB_NONE)
188 xcb_get_property_cookie_t cookie;
189 cookie = xcb_get_property(conn, false, cwindow->leader, A__NET_STARTUP_ID, XCB_GET_PROPERTY_TYPE_ANY, 0, 512);
190 DLOG("Checking leader window 0x%08x\n", cwindow->leader);
191 startup_id_reply = xcb_get_property_reply(conn, cookie, NULL);
193 if (startup_id_reply == NULL || xcb_get_property_value_length(startup_id_reply) == 0) {
194 DLOG("No _NET_STARTUP_ID set on the leader either\n");
195 FREE(startup_id_reply);
201 if (asprintf(&startup_id, "%.*s", xcb_get_property_value_length(startup_id_reply),
202 (char*)xcb_get_property_value(startup_id_reply)) == -1) {
203 perror("asprintf()");
204 DLOG("Could not get _NET_STARTUP_ID\n");
205 free(startup_id_reply);
209 struct Startup_Sequence *current, *sequence = NULL;
210 TAILQ_FOREACH(current, &startup_sequences, sequences) {
211 if (strcmp(current->id, startup_id) != 0)
219 free(startup_id_reply);
222 DLOG("WARNING: This sequence (ID %s) was not found\n", startup_id);
226 return sequence->workspace;