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 "hostnamed-gen.h"
28 #include "hostnamed.h"
30 GPtrArray
*hostnamed_freeable
;
31 Hostname1
*hostnamed_interf
;
33 GMainLoop
*hostnamed_loop
;
36 gboolean dbus_interface_exported
; /* reliable because of gdbus operational guarantees */
38 /* --- begin method/property/dbus signal code --- */
41 on_handle_set_hostname(Hostname1
*hn1_passed_interf
,
42 GDBusMethodInvocation
*invoc
,
49 on_handle_set_static_hostname(Hostname1
*hn1_passed_interf
,
50 GDBusMethodInvocation
*invoc
,
57 on_handle_set_pretty_hostname(Hostname1
*hn1_passed_interf
,
58 GDBusMethodInvocation
*invoc
,
65 on_handle_set_chassis(Hostname1
*hn1_passed_interf
,
66 GDBusMethodInvocation
*invoc
,
73 on_handle_set_icon_name(Hostname1
*hn1_passed_interf
,
74 GDBusMethodInvocation
*invoc
,
80 /* note: all hostnamed/hostname1's properties are read-only,
81 * and do not need set_ functions, gdbus-codegen realized
82 * this from the XML and handled the to-be error of trying
83 * to set a read-only property's value
89 gchar
*hostname_buf
, *ret
;
90 size_t hostname_divider
;
92 hostname_buf
= (gchar
*) g_malloc0(MAXHOSTNAMELEN
);
93 ret
= (gchar
*) g_malloc0(MAXHOSTNAMELEN
);
95 g_ptr_array_add(hostnamed_freeable
, hostname_buf
);
96 g_ptr_array_add(hostnamed_freeable
, ret
);
98 if(gethostname(hostname_buf
, MAXHOSTNAMELEN
) || g_strcmp0(hostname_buf
, "") == 0)
101 hostname_divider
= strcspn(hostname_buf
, ".");
103 return strncpy(ret
, hostname_buf
, hostname_divider
);
107 our_get_static_hostname() {
109 gchar
*pretty_hostname
;
112 pretty_hostname
= our_get_pretty_hostname();
114 if(g_strcmp0(pretty_hostname
, "") == 0)
115 ret
= our_get_hostname();
117 else if(ret
= g_hostname_to_ascii(pretty_hostname
)) {
119 g_ptr_array_add(hostnamed_freeable
, ret
);
127 our_get_pretty_hostname() {
132 if(g_key_file_load_from_file(config
, "/etc/systemd_compat.conf", G_KEY_FILE_NONE
, NULL
)
133 && ret
= g_key_file_get_value(config
, "hostnamed", "PrettyHostname", NULL
)) { /* ret might need to be freed, docs dont specify but i am suspicious */
152 our_get_icon_name() {
158 our_get_kernel_name() {
164 our_get_kernel_version() {
170 our_get_kernel_release() {
176 our_get_os_cpename() {
182 our_get_os_pretty_name() {
187 /* --- end method/property/dbus signal code, begin bus/name handlers --- */
189 static void hostnamed_on_bus_acquired(GDBusConnection
*conn
,
191 gpointer user_data
) {
193 g_printf("got bus/name, exporting %s's interface...\n", name
);
195 hostnamed_interf
= hostname1_skeleton_new();
197 /* attach function pointers to generated struct's method handlers */
198 g_signal_connect(hostnamed_interf
, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname
), NULL
);
199 g_signal_connect(hostnamed_interf
, "handle-set-static-hostname", G_CALLBACK(on_handle_set_static_hostname
), NULL
);
200 g_signal_connect(hostnamed_interf
, "handle-set-pretty-hostname", G_CALLBACK(on_handle_set_pretty_hostname
), NULL
);
201 g_signal_connect(hostnamed_interf
, "handle-set-chassis", G_CALLBACK(on_handle_set_chassis
), NULL
);
202 g_signal_connect(hostnamed_interf
, "handle-set-icon-name", G_CALLBACK(on_handle_set_icon_name
), NULL
);
204 /* set our properties before export */
205 hostname1_set_hostname(hostnamed_interf
, our_get_hostname());
206 hostname1_set_static_hostname(hostnamed_interf
, our_get_static_hostname());
207 hostname1_set_pretty_hostname(hostnamed_interf
, our_get_pretty_hostname());
208 hostname1_set_chassis(hostnamed_interf
, our_get_chassis());
209 hostname1_set_icon_name(hostnamed_interf
, our_get_icon_name());
210 hostname1_set_kernel_name(hostnamed_interf
, our_get_kernel_name());
211 hostname1_set_kernel_version(hostnamed_interf
, our_get_kernel_version());
212 hostname1_set_kernel_release(hostnamed_interf
, our_get_kernel_release());
213 hostname1_set_operating_system_cpename(hostnamed_interf
, our_get_os_cpename());
214 hostname1_set_operating_system_pretty_name(hostnamed_interf
, our_get_os_pretty_name());
216 if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(hostnamed_interf
),
218 "/org/freedesktop/hostname1",
221 g_printf("failed to export %s's interface!\n", name
); /* unusual edge case, TODO check errno */
222 hostnamed_mem_clean();
226 dbus_interface_exported
= TRUE
;
227 g_printf("exported %s's interface on the system bus...\n", name
);
231 static void hostnamed_on_name_acquired(GDBusConnection
*conn
,
233 gpointer user_data
) {
235 g_printf("success!\n");
238 static void hostnamed_on_name_lost(GDBusConnection
*conn
,
240 gpointer user_data
) {
244 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
);
245 hostnamed_mem_clean();
248 g_printf("lost name %s, exiting...\n", name
);
250 hostnamed_mem_clean();
253 /* --- end bus/name handlers, begin misc unix functions --- */
255 /* safe call to clean and then exit
256 * this stops our GMainLoop safely before letting main() return */
257 void hostnamed_mem_clean() {
259 g_printf("exiting...\n");
261 if(dbus_interface_exported
)
262 g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(hostnamed_interf
));
264 if(g_main_loop_is_running(hostnamed_loop
))
265 g_main_loop_quit(hostnamed_loop
);
269 /* wrapper for glib's unix signal handling; called only once if terminatating signal is raised against us */
270 gboolean
unix_sig_terminate_handler(gpointer data
) {
272 g_printf("caught SIGINT/HUP/TERM, exiting\n");
274 hostnamed_mem_clean();
275 return G_SOURCE_REMOVE
;
278 void set_signal_handlers() {
280 /* we don't care about its descriptor, we never need to unregister these */
281 g_unix_signal_add(SIGINT
, unix_sig_terminate_handler
, NULL
);
282 g_unix_signal_add(SIGHUP
, unix_sig_terminate_handler
, NULL
);
283 g_unix_signal_add(SIGTERM
, unix_sig_terminate_handler
, NULL
);
285 /* TODO: the "only once" guarantee only counts towards specific signals.
286 * make sure calling a SIGINT and SIGHUP doesn't cause term_handler()
287 * to be called twice */
292 set_signal_handlers();
294 hostnamed_loop
= g_main_loop_new(NULL
, TRUE
);
295 hostnamed_freeable
= g_ptr_array_new();
297 bus_descriptor
= g_bus_own_name(G_BUS_TYPE_SYSTEM
,
298 "org.freedesktop.hostname1",
299 G_BUS_NAME_OWNER_FLAGS_NONE
,
300 hostnamed_on_bus_acquired
,
301 hostnamed_on_name_acquired
,
302 hostnamed_on_name_lost
,
306 g_main_loop_run(hostnamed_loop
);
307 /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */
308 g_main_loop_unref(hostnamed_loop
);
310 /* guaranteed unownable */
311 g_bus_unown_name(bus_descriptor
);
313 /* at this point no operations can occur with our data, it is safe to free it + its container */
314 g_ptr_array_free(hostnamed_freeable
, TRUE
);
319 /* TODO figure out DMI variables on obsd */
320 /*static gchar *guess_icon_name() {
322 gchar *filebuf = NULL;
325 #if defined(__i386__) || defined(__x86_64__)
327 Taken with a few minor changes from systemd's hostnamed.c,
328 copyright 2011 Lennart Poettering.
330 See the SMBIOS Specification 2.7.1 section 7.4.1 for
331 details about the values listed here:
333 http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf
336 if (g_file_get_contents ("/sys/class/dmi/id/chassis_type", &filebuf, NULL, NULL)) {
337 switch (g_ascii_strtoull (filebuf, NULL, 10)) {
343 ret = g_strdup ("computer-desktop");
348 ret = g_strdup ("computer-laptop");
354 ret = g_strdup ("computer-server");
359 ret = g_strdup ("computer");