1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
3 * LADI Session Handler (ladish)
5 * Copyright (C) 2008, 2009, 2010 Nedko Arnaudov <nedko@arnaudov.name>
6 * Copyright (C) 2008 Juuso Alasuutari <juuso.alasuutari@gmail.com>
7 * Copyright (C) 2002 Robert Ham <rah@bash.sh>
9 **************************************************************************
10 * This file contains the code that implements main() and other top-level functionality
11 **************************************************************************
13 * LADI Session Handler is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * LADI Session Handler is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
25 * or write to the Free Software Foundation, Inc.,
26 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
35 #include "version.h" /* git version define */
36 #include "proctitle.h"
41 #include "../dbus_constants.h"
42 #include "../catdup.h"
43 #include "dirhelpers.h"
44 #include "../proxies/a2j_proxy.h"
45 #include "../proxies/jmcore_proxy.h"
46 #include "../proxies/notify_proxy.h"
49 const char * g_dbus_unique_name
;
50 dbus_object_path g_control_object
;
54 static DBusHandlerResult
lashd_client_disconnect_handler(DBusConnection
* connection
, DBusMessage
* message
, void * data
)
56 /* If the message isn't a signal the object path handler may use it */
57 if (dbus_message_get_type(message
) != DBUS_MESSAGE_TYPE_SIGNAL
)
59 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
62 const char *member
, *name
, *old_name
;
63 struct lash_client
*client
;
65 if (!(member
= dbus_message_get_member(message
)))
67 log_error("Received JACK signal with NULL member");
68 return DBUS_HANDLER_RESULT_HANDLED
;
71 if (strcmp(member
, "NameOwnerChanged") != 0)
73 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
76 dbus_error_init(&err
);
78 if (!dbus_message_get_args(message
, &err
,
79 DBUS_TYPE_STRING
, &name
,
80 DBUS_TYPE_STRING
, &old_name
,
83 log_error("Cannot get message arguments: %s",
85 dbus_error_free(&err
);
86 return DBUS_HANDLER_RESULT_HANDLED
;
89 client
= server_find_client_by_dbus_name(old_name
);
92 client_disconnected(client
);
93 return DBUS_HANDLER_RESULT_HANDLED
;
98 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
105 ",sender='org.freedesktop.DBus'"
106 ",path='/org/freedesktop/DBus'"
107 ",interface='org.freedesktop.DBus'"
108 ",member='NameOwnerChanged'"
111 if (dbus_error_is_set(&err
))
113 log_error("Failed to add D-Bus match rule: %s", err
.message
);
114 dbus_error_free(&err
);
118 if (!dbus_connection_add_filter(service
->connection
, lashd_client_disconnect_handler
, NULL
, NULL
))
120 log_error("Failed to add D-Bus filter");
125 static bool connect_dbus(void)
129 dbus_error_init(&g_dbus_error
);
131 g_dbus_connection
= dbus_bus_get(DBUS_BUS_SESSION
, &g_dbus_error
);
132 if (dbus_error_is_set(&g_dbus_error
))
134 log_error("Failed to get bus: %s", g_dbus_error
.message
);
135 dbus_error_free(&g_dbus_error
);
139 g_dbus_unique_name
= dbus_bus_get_unique_name(g_dbus_connection
);
140 if (g_dbus_unique_name
== NULL
)
142 log_error("Failed to read unique bus name");
143 goto unref_connection
;
146 log_info("Connected to local session bus, unique name is \"%s\"", g_dbus_unique_name
);
148 ret
= dbus_bus_request_name(g_dbus_connection
, SERVICE_NAME
, DBUS_NAME_FLAG_DO_NOT_QUEUE
, &g_dbus_error
);
151 log_error("Failed to acquire bus name: %s", g_dbus_error
.message
);
152 dbus_error_free(&g_dbus_error
);
153 goto unref_connection
;
156 if (ret
== DBUS_REQUEST_NAME_REPLY_EXISTS
)
158 log_error("Requested connection name already exists");
159 goto unref_connection
;
162 g_control_object
= dbus_object_path_new(CONTROL_OBJECT_PATH
, &g_lashd_interface_control
, NULL
, NULL
);
163 if (g_control_object
== NULL
)
165 goto unref_connection
;
168 if (!dbus_object_path_register(g_dbus_connection
, g_control_object
))
170 goto destroy_control_object
;
175 destroy_control_object
:
176 dbus_object_path_destroy(g_dbus_connection
, g_control_object
);
178 dbus_connection_unref(g_dbus_connection
);
184 static void disconnect_dbus(void)
186 dbus_object_path_destroy(g_dbus_connection
, g_control_object
);
187 dbus_connection_unref(g_dbus_connection
);
190 void term_signal_handler(int signum
)
192 log_info("Caught signal %d (%s), terminating", signum
, strsignal(signum
));
196 bool install_term_signal_handler(int signum
, bool ignore_if_already_ignored
)
200 sigh
= signal(signum
, term_signal_handler
);
203 log_error("signal() failed to install handler function for signal %d.", signum
);
207 if (sigh
== SIG_IGN
&& ignore_if_already_ignored
)
209 signal(SIGTERM
, SIG_IGN
);
215 bool init_paths(void)
217 const char * home_dir
;
219 home_dir
= getenv("HOME");
220 if (home_dir
== NULL
)
222 log_error("Environment variable HOME not set");
226 g_base_dir
= catdup(home_dir
, BASE_DIR
);
227 if (g_base_dir
== NULL
)
229 log_error("catdup failed for '%s' and '%s'", home_dir
, BASE_DIR
);
233 if (!ensure_dir_exist(g_base_dir
, 0700))
242 void uninit_paths(void)
247 int main(int argc
, char ** argv
, char ** envp
)
250 char timestamp_str
[26];
255 ctime_r(&st
.st_mtime
, timestamp_str
);
256 timestamp_str
[24] = 0;
258 lash_init_setproctitle(argc
, argv
, envp
);
260 dbus_threads_init_default();
262 log_info("------------------");
263 log_info("LADI session handler activated. Version %s (%s) built on %s", PACKAGE_VERSION
, GIT_VERSION
, timestamp_str
);
272 loader_init(ladish_studio_on_child_exit
);
274 if (!room_templates_init())
281 log_error("Failed to connecto to D-Bus");
282 goto uninit_room_templates
;
285 /* install the signal handlers */
286 install_term_signal_handler(SIGTERM
, false);
287 install_term_signal_handler(SIGINT
, true);
288 install_term_signal_handler(SIGHUP
, true);
289 if (signal(SIGPIPE
, SIG_IGN
) == SIG_ERR
)
291 log_error("signal(SIGPIPE, SIG_IGN).");
294 /* setup our SIGSEGV magic that prints nice stack in our logfile */
297 if (!ladish_notify_init("LADI Session Handler"))
302 if (!a2j_proxy_init())
307 if (!jmcore_proxy_init())
312 if (!ladish_studio_init())
317 ladish_notify_simple(LADISH_NOTIFY_URGENCY_LOW
, "LADI Session Handler daemon activated", NULL
);
321 dbus_connection_read_write_dispatch(g_dbus_connection
, 50);
327 ladish_notify_simple(LADISH_NOTIFY_URGENCY_LOW
, "LADI Session Handler daemon deactivated", NULL
);
331 log_debug("Finished, cleaning up");
333 ladish_studio_uninit();
336 jmcore_proxy_uninit();
342 ladish_notify_uninit();
347 uninit_room_templates
:
348 room_templates_uninit();
356 log_debug("Cleaned up, exiting");
358 log_info("LADI session handler deactivated");
359 log_info("------------------");