2 * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/param.h>
24 #include <glib/gprintf.h>
25 #include <glib-unix.h>
27 #include "logind-gen.h"
30 GPtrArray
*logind_freeable
;
31 Login1Manager
*logind_interf
;
33 GMainLoop
*logind_loop
;
36 gboolean dbus_interface_exported
; /* reliable because of gdbus operational guarantees */
38 /* --- begin method/property/dbus signal code --- */
41 on_handle_set_hostname(Login1Manager *hn1_passed_interf,
42 GDBusMethodInvocation *invoc,
51 gchar *hostname_buf, *ret;
52 size_t hostname_divider;
54 hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN);
55 ret = (gchar*) g_malloc0(MAXHOSTNAMELEN);
56 g_ptr_array_add(logind_freeable, hostname_buf);
57 g_ptr_array_add(logind_freeable, ret);
59 if(gethostname(hostname_buf, MAXHOSTNAMELEN))
62 hostname_divider = strcspn(hostname_buf, ".");
64 return strncpy(ret, hostname_buf, hostname_divider);
67 /* --- end method/property/dbus signal code, begin bus/name handlers --- */
69 static void logind_on_bus_acquired(GDBusConnection
*conn
,
73 g_printf("got bus/name, exporting %s's interface...\n", name
);
75 logind_interf
= login1_manager_skeleton_new();
77 /* attach function pointers to generated struct's method handlers
78 g_signal_connect(logind_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL); */
80 /* set our properties before export
81 login1_manager_set_hostname(logind_interf, our_get_hostname()); */
83 if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(logind_interf
),
85 "/org/freedesktop/login1_manager",
88 g_printf("failed to export %s's interface!\n", name
);
93 dbus_interface_exported
= TRUE
;
94 g_printf("exported %s's interface on the system bus...\n", name
);
98 static void logind_on_name_acquired(GDBusConnection
*conn
,
100 gpointer user_data
) {
102 g_printf("success!\n");
105 static void logind_on_name_lost(GDBusConnection
*conn
,
107 gpointer user_data
) {
111 g_printf("failed to connect to the system bus while trying to acquire name '%s': either dbus-daemon isn't running or we don't have permission to push names and/or their interfaces to it.\n", name
);
115 g_print("lost name %s, exiting...\n", name
);
120 /* --- end bus/name handlers, begin misc unix functions --- */
122 /* safe call to clean and then exit
123 * this stops our GMainLoop sfaely before letting main() return */
124 void logind_mem_clean() {
126 g_printf("exiting...\n");
128 if(dbus_interface_exported
)
129 g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(logind_interf
));
131 if(g_main_loop_is_running(logind_loop
))
132 g_main_loop_quit(logind_loop
);
136 /* wrapper for glib's unix signal handling; called only once if terminating signal is raised against us */
137 gboolean
unix_sig_terminate_handler(gpointer data
) {
139 g_printf("caught SIGINT/HUP/TERM, exiting\n");
142 return G_SOURCE_REMOVE
;
145 void set_signal_handlers() {
147 /* we don't care about its descriptor, we never need to unregister these */
148 g_unix_signal_add(SIGINT
, unix_sig_terminate_handler
, NULL
);
149 g_unix_signal_add(SIGHUP
, unix_sig_terminate_handler
, NULL
);
150 g_unix_signal_add(SIGTERM
, unix_sig_terminate_handler
, NULL
);
155 set_signal_handlers();
157 logind_loop
= g_main_loop_new(NULL
, TRUE
);
158 logind_freeable
= g_ptr_array_new();
160 bus_descriptor
= g_bus_own_name(G_BUS_TYPE_SYSTEM
,
161 "org.freedesktop.login1_manager",
162 G_BUS_NAME_OWNER_FLAGS_NONE
,
163 logind_on_bus_acquired
,
164 logind_on_name_acquired
,
169 g_main_loop_run(logind_loop
);
170 /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */
171 g_main_loop_unref(logind_loop
);
173 /* guaranteed unownable */
174 g_bus_unown_name(bus_descriptor
);
176 /* at this point no operations can occur with our data, it is safe to free it + its container */
177 g_ptr_array_free(logind_freeable
, TRUE
);