merge 'lennart' branch back into trunk.

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1971 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/modules/module-x11-xsmp.c

@@ -0,0 +1,195 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <X11/Xlib.h>
+#include <X11/SM/SMlib.h>
+
+#include <pulse/xmalloc.h>
+#include <pulse/util.h>
+
+#include <pulsecore/iochannel.h>
+#include <pulsecore/sink.h>
+#include <pulsecore/core-scache.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/namereg.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-util.h>
+
+#include "module-x11-xsmp-symdef.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering")
+PA_MODULE_DESCRIPTION("X11 session management")
+PA_MODULE_VERSION(PACKAGE_VERSION)
+
+static int ice_in_use = 0;
+
+static const char* const valid_modargs[] = {
+    NULL
+};
+
+static void die_cb(SmcConn connection, SmPointer client_data){
+    pa_core *c = PA_CORE(client_data);
+
+    pa_log_debug("Got die message from XSM. Exiting...");
+
+    pa_core_assert_ref(c);
+    c->mainloop->quit(c->mainloop, 0);
+}
+
+static void save_complete_cb(SmcConn connection, SmPointer client_data) {
+}
+
+static void shutdown_cancelled_cb(SmcConn connection, SmPointer client_data) {
+    SmcSaveYourselfDone(connection, True);
+}
+
+static void save_yourself_cb(SmcConn connection, SmPointer client_data, int save_type, Bool _shutdown, int interact_style, Bool fast) {
+    SmcSaveYourselfDone(connection, True);
+}
+
+static void ice_io_cb(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t flags, void *userdata) {
+    IceConn connection = userdata;
+
+    if (IceProcessMessages(connection, NULL, NULL) == IceProcessMessagesIOError) {
+        IceSetShutdownNegotiation(connection, False);
+        IceCloseConnection(connection);
+    }
+}
+
+static void new_ice_connection(IceConn connection, IcePointer client_data, Bool opening, IcePointer *watch_data) {
+    pa_core *c = client_data;
+
+    pa_assert(c);
+
+    if (opening)
+        *watch_data = c->mainloop->io_new(c->mainloop, IceConnectionNumber(connection), PA_IO_EVENT_INPUT, ice_io_cb, connection);
+    else
+        c->mainloop->io_free(*watch_data);
+}
+
+int pa__init(pa_module*m) {
+
+    pa_modargs *ma = NULL;
+    char t[256], *vendor, *client_id;
+    SmcCallbacks callbacks;
+    SmProp prop_program, prop_user;
+    SmProp *prop_list[2];
+    SmPropValue val_program, val_user;
+    SmcConn connection;
+
+    pa_assert(m);
+
+    if (ice_in_use) {
+        pa_log("module-x11-xsmp may no be loaded twice.");
+        return -1;
+    }
+
+    IceAddConnectionWatch(new_ice_connection, m->core);
+    ice_in_use = 1;
+
+    if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+        pa_log("Failed to parse module arguments");
+        goto fail;
+    }
+
+    if (!getenv("SESSION_MANAGER")) {
+        pa_log("X11 session manager not running.");
+        goto fail;
+    }
+
+    memset(&callbacks, 0, sizeof(callbacks));
+    callbacks.die.callback = die_cb;
+    callbacks.die.client_data = m->core;
+    callbacks.save_yourself.callback = save_yourself_cb;
+    callbacks.save_yourself.client_data = m->core;
+    callbacks.save_complete.callback = save_complete_cb;
+    callbacks.save_complete.client_data = m->core;
+    callbacks.shutdown_cancelled.callback = shutdown_cancelled_cb;
+    callbacks.shutdown_cancelled.client_data = m->core;
+
+    if (!(m->userdata = connection = SmcOpenConnection(
+                  NULL, m->core,
+                  SmProtoMajor, SmProtoMinor,
+                  SmcSaveYourselfProcMask | SmcDieProcMask | SmcSaveCompleteProcMask | SmcShutdownCancelledProcMask,
+                  &callbacks, NULL, &client_id,
+                  sizeof(t), t))) {
+
+        pa_log("Failed to open connection to session manager: %s", t);
+        goto fail;
+    }
+
+    prop_program.name = (char*) SmProgram;
+    prop_program.type = (char*) SmARRAY8;
+    val_program.value = (char*) PACKAGE_NAME;
+    val_program.length = strlen(val_program.value);
+    prop_program.num_vals = 1;
+    prop_program.vals = &val_program;
+    prop_list[0] = &prop_program;
+
+    prop_user.name = (char*) SmUserID;
+    prop_user.type = (char*) SmARRAY8;
+    pa_get_user_name(t, sizeof(t));
+    val_user.value = t;
+    val_user.length = strlen(val_user.value);
+    prop_user.num_vals = 1;
+    prop_user.vals = &val_user;
+    prop_list[1] = &prop_user;
+
+    SmcSetProperties(connection, PA_ELEMENTSOF(prop_list), prop_list);
+
+    pa_log_info("Connected to session manager '%s' as '%s'.", vendor = SmcVendor(connection), client_id);
+    free(vendor);
+    free(client_id);
+
+    pa_modargs_free(ma);
+
+    return 0;
+
+fail:
+    if (ma)
+        pa_modargs_free(ma);
+
+    pa__done(m);
+
+    return -1;
+}
+
+void pa__done(pa_module*m) {
+    pa_assert(m);
+
+    if (m->userdata)
+        SmcCloseConnection(m->userdata, 0, NULL);
+
+    if (ice_in_use) {
+        IceRemoveConnectionWatch(new_ice_connection, m->core);
+        ice_in_use = 0;
+    }
+}