Example #1
0
static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *message, void *userdata) {
    pa_context *c = userdata;
    pa_bool_t is_session;

    pa_assert(bus);
    pa_assert(message);
    pa_assert(c);

    if (c->state != PA_CONTEXT_CONNECTING)
        goto finish;

    if (!c->no_fail)
        goto finish;

    /* FIXME: We probably should check if this is actually the NameOwnerChanged we were looking for */

    is_session = c->session_bus && bus == pa_dbus_wrap_connection_get(c->session_bus);
    pa_log_debug("Rock!! PulseAudio might be back on %s bus", is_session ? "session" : "system");

    if (is_session)
        /* The user instance via PF_LOCAL */
        c->server_list = prepend_per_user(c->server_list);
    else
        /* The system wide instance via PF_LOCAL */
        c->server_list = pa_strlist_prepend(c->server_list, PA_SYSTEM_RUNTIME_PATH PA_PATH_SEP PA_NATIVE_DEFAULT_UNIX_SOCKET);

    if (!c->client)
        try_next_connection(c);

finish:
    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
Example #2
0
DBusConnection* pa_dbus_connection_get(pa_dbus_connection *c){
    pa_assert(c);
    pa_assert(PA_REFCNT_VALUE(c) > 0);
    pa_assert(c->connection);

    return pa_dbus_wrap_connection_get(c->connection);
}
Example #3
0
static void context_free(pa_context *c) {
    pa_assert(c);

    context_unlink(c);

#ifdef HAVE_DBUS
    if (c->system_bus) {
        if (c->filter_added)
            dbus_connection_remove_filter(pa_dbus_wrap_connection_get(c->system_bus), filter_cb, c);
        pa_dbus_wrap_connection_free(c->system_bus);
    }

    if (c->session_bus) {
        if (c->filter_added)
            dbus_connection_remove_filter(pa_dbus_wrap_connection_get(c->session_bus), filter_cb, c);
        pa_dbus_wrap_connection_free(c->session_bus);
    }
#endif

    if (c->record_streams)
        pa_hashmap_free(c->record_streams, NULL, NULL);
    if (c->playback_streams)
        pa_hashmap_free(c->playback_streams, NULL, NULL);

    if (c->mempool)
        pa_mempool_free(c->mempool);

    if (c->conf)
        pa_client_conf_free(c->conf);

    pa_strlist_free(c->server_list);

    if (c->proplist)
        pa_proplist_free(c->proplist);

    pa_xfree(c->server);
    pa_xfree(c);
}
Example #4
0
static void track_pulseaudio_on_dbus(pa_context *c, DBusBusType type, pa_dbus_wrap_connection **conn) {
    DBusError error;

    pa_assert(c);
    pa_assert(conn);

    dbus_error_init(&error);

    if (!(*conn = pa_dbus_wrap_connection_new(c->mainloop, c->use_rtclock, type, &error)) || dbus_error_is_set(&error)) {
        pa_log_warn("Unable to contact DBUS: %s: %s", error.name, error.message);
        goto fail;
    }

    if (!dbus_connection_add_filter(pa_dbus_wrap_connection_get(*conn), filter_cb, c, NULL)) {
        pa_log_warn("Failed to add filter function");
        goto fail;
    }
    c->filter_added = TRUE;

    if (pa_dbus_add_matches(
                pa_dbus_wrap_connection_get(*conn), &error,
                "type='signal',sender='" DBUS_SERVICE_DBUS "',interface='" DBUS_INTERFACE_DBUS "',member='NameOwnerChanged',arg0='org.pulseaudio.Server',arg1=''", NULL) < 0) {

        pa_log_warn("Unable to track org.pulseaudio.Server: %s: %s", error.name, error.message);
        goto fail;
    }

    return;

fail:
    if (*conn) {
        pa_dbus_wrap_connection_free(*conn);
        *conn = NULL;
    }

    dbus_error_free(&error);
}
static int context_autospawn(pa_context *c) {
    pid_t pid;
    int status, r;
    struct sigaction sa;

    pa_context_ref(c);

    if (sigaction(SIGCHLD, NULL, &sa) < 0) {
        pa_log_debug("sigaction() failed: %s", pa_cstrerror(errno));
        pa_context_fail(c, PA_ERR_INTERNAL);
        goto fail;
    }

#ifdef SA_NOCLDWAIT
    if ((sa.sa_flags & SA_NOCLDWAIT) || sa.sa_handler == SIG_IGN) {
#else
    if (sa.sa_handler == SIG_IGN) {
#endif
        pa_log_debug("Process disabled waitpid(), cannot autospawn.");
        pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
        goto fail;
    }

    pa_log_debug("Trying to autospawn...");

    if (c->spawn_api.prefork)
        c->spawn_api.prefork();

    if ((pid = fork()) < 0) {
        pa_log_error(_("fork(): %s"), pa_cstrerror(errno));
        pa_context_fail(c, PA_ERR_INTERNAL);

        if (c->spawn_api.postfork)
            c->spawn_api.postfork();

        goto fail;
    } else if (!pid) {
        /* Child */

        const char *state = NULL;
        const char * argv[32];
        unsigned n = 0;

        if (c->spawn_api.atfork)
            c->spawn_api.atfork();

        /* We leave most of the cleaning up of the process environment
         * to the executable. We only clean up the file descriptors to
         * make sure the executable can actually be loaded
         * correctly. */
        pa_close_all(-1);

        /* Setup argv */
        argv[n++] = c->conf->daemon_binary;
        argv[n++] = "--start";

        while (n < PA_ELEMENTSOF(argv)-1) {
            char *a;

            if (!(a = pa_split_spaces(c->conf->extra_arguments, &state)))
                break;

            argv[n++] = a;
        }

        argv[n++] = NULL;
        pa_assert(n <= PA_ELEMENTSOF(argv));

        execv(argv[0], (char * const *) argv);
        _exit(1);
    }

    /* Parent */

    if (c->spawn_api.postfork)
        c->spawn_api.postfork();

    do {
        r = waitpid(pid, &status, 0);
    } while (r < 0 && errno == EINTR);

    if (r < 0) {

        if (errno != ESRCH) {
            pa_log(_("waitpid(): %s"), pa_cstrerror(errno));
            pa_context_fail(c, PA_ERR_INTERNAL);
            goto fail;
        }

        /* hmm, something already reaped our child, so we assume
         * startup worked, even if we cannot know */

    } else if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
        pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
        goto fail;
    }

    pa_context_unref(c);

    return 0;

fail:

    pa_context_unref(c);

    return -1;
}

#endif /* OS_IS_WIN32 */

static void on_connection(pa_socket_client *client, pa_iochannel*io, void *userdata);

#ifdef HAVE_DBUS
static void track_pulseaudio_on_dbus(pa_context *c, DBusBusType type, pa_dbus_wrap_connection **conn) {
    DBusError error;

    pa_assert(c);
    pa_assert(conn);

    dbus_error_init(&error);

    if (!(*conn = pa_dbus_wrap_connection_new(c->mainloop, c->use_rtclock, type, &error)) || dbus_error_is_set(&error)) {
        pa_log_warn("Unable to contact DBUS: %s: %s", error.name, error.message);
        goto fail;
    }

    if (!dbus_connection_add_filter(pa_dbus_wrap_connection_get(*conn), filter_cb, c, NULL)) {
        pa_log_warn("Failed to add filter function");
        goto fail;
    }
    c->filter_added = true;

    if (pa_dbus_add_matches(
                pa_dbus_wrap_connection_get(*conn), &error,
                "type='signal',sender='" DBUS_SERVICE_DBUS "',interface='" DBUS_INTERFACE_DBUS "',member='NameOwnerChanged',arg0='org.pulseaudio.Server',arg1=''", NULL) < 0) {

        pa_log_warn("Unable to track org.pulseaudio.Server: %s: %s", error.name, error.message);
        goto fail;
    }

    return;

fail:
    if (*conn) {
        pa_dbus_wrap_connection_free(*conn);
        *conn = NULL;
    }

    dbus_error_free(&error);
}