1 /*
2 *
3 * BlueZ - Bluetooth protocol stack for Linux
4 *
5 * Copyright (C) 2000-2001 Qualcomm Incorporated
6 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
7 * Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
8 *
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26 #ifdef HAVE_CONFIG_H
27 #include <config.h>
28 #endif
29
30 #include <errno.h>
31 #include <stdio.h>
32 #include <unistd.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <signal.h>
36 #include <sys/types.h>
37 #include <sys/stat.h>
38
39 #include <bluetooth/bluetooth.h>
40 #include <bluetooth/uuid.h>
41
42 #include <glib.h>
43
44 #include <dbus/dbus.h>
45
46 #include <gdbus.h>
47
48 #include "log.h"
49
50 #include "hcid.h"
51 #include "sdpd.h"
52 #include "attrib-server.h"
53 #include "adapter.h"
54 #include "dbus-common.h"
55 #include "agent.h"
56 #include "manager.h"
57
58 #ifdef HAVE_CAPNG
59 #include <cap-ng.h>
60 #endif
61
62 #define BLUEZ_NAME "org.bluez"
63
64 #define LAST_ADAPTER_EXIT_TIMEOUT 30
65
66 #define DEFAULT_DISCOVERABLE_TIMEOUT 180 /* 3 minutes */
67
68 struct main_opts main_opts;
69
load_config(const char * file)70 static GKeyFile *load_config(const char *file)
71 {
72 GError *err = NULL;
73 GKeyFile *keyfile;
74
75 keyfile = g_key_file_new();
76
77 g_key_file_set_list_separator(keyfile, ',');
78
79 if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
80 error("Parsing %s failed: %s", file, err->message);
81 g_error_free(err);
82 g_key_file_free(keyfile);
83 return NULL;
84 }
85
86 return keyfile;
87 }
88
parse_config(GKeyFile * config)89 static void parse_config(GKeyFile *config)
90 {
91 GError *err = NULL;
92 char *str;
93 int val;
94 gboolean boolean;
95
96 if (!config)
97 return;
98
99 DBG("parsing main.conf");
100
101 val = g_key_file_get_integer(config, "General",
102 "DiscoverableTimeout", &err);
103 if (err) {
104 DBG("%s", err->message);
105 g_clear_error(&err);
106 } else {
107 DBG("discovto=%d", val);
108 main_opts.discovto = val;
109 main_opts.flags |= 1 << HCID_SET_DISCOVTO;
110 }
111
112 val = g_key_file_get_integer(config, "General",
113 "PairableTimeout", &err);
114 if (err) {
115 DBG("%s", err->message);
116 g_clear_error(&err);
117 } else {
118 DBG("pairto=%d", val);
119 main_opts.pairto = val;
120 }
121
122 val = g_key_file_get_integer(config, "General", "PageTimeout", &err);
123 if (err) {
124 DBG("%s", err->message);
125 g_clear_error(&err);
126 } else {
127 DBG("pageto=%d", val);
128 main_opts.pageto = val;
129 main_opts.flags |= 1 << HCID_SET_PAGETO;
130 }
131
132 str = g_key_file_get_string(config, "General", "Name", &err);
133 if (err) {
134 DBG("%s", err->message);
135 g_clear_error(&err);
136 } else {
137 DBG("name=%s", str);
138 g_free(main_opts.name);
139 main_opts.name = g_strdup(str);
140 main_opts.flags |= 1 << HCID_SET_NAME;
141 g_free(str);
142 }
143
144 str = g_key_file_get_string(config, "General", "Class", &err);
145 if (err) {
146 DBG("%s", err->message);
147 g_clear_error(&err);
148 } else {
149 DBG("class=%s", str);
150 main_opts.class = strtol(str, NULL, 16);
151 main_opts.flags |= 1 << HCID_SET_CLASS;
152 g_free(str);
153 }
154
155 val = g_key_file_get_integer(config, "General",
156 "DiscoverSchedulerInterval", &err);
157 if (err) {
158 DBG("%s", err->message);
159 g_clear_error(&err);
160 } else {
161 DBG("discov_interval=%d", val);
162 main_opts.discov_interval = val;
163 }
164
165 boolean = g_key_file_get_boolean(config, "General",
166 "InitiallyPowered", &err);
167 if (err) {
168 DBG("%s", err->message);
169 g_clear_error(&err);
170 } else if (boolean == FALSE)
171 main_opts.mode = MODE_OFF;
172
173 boolean = g_key_file_get_boolean(config, "General",
174 "RememberPowered", &err);
175 if (err) {
176 DBG("%s", err->message);
177 g_clear_error(&err);
178 } else
179 main_opts.remember_powered = boolean;
180
181 str = g_key_file_get_string(config, "General", "DeviceID", &err);
182 if (err) {
183 DBG("%s", err->message);
184 g_clear_error(&err);
185 } else {
186 DBG("deviceid=%s", str);
187 strncpy(main_opts.deviceid, str,
188 sizeof(main_opts.deviceid) - 1);
189 g_free(str);
190 }
191
192 boolean = g_key_file_get_boolean(config, "General",
193 "ReverseServiceDiscovery", &err);
194 if (err) {
195 DBG("%s", err->message);
196 g_clear_error(&err);
197 } else
198 main_opts.reverse_sdp = boolean;
199
200 boolean = g_key_file_get_boolean(config, "General",
201 "NameResolving", &err);
202 if (err)
203 g_clear_error(&err);
204 else
205 main_opts.name_resolv = boolean;
206
207 boolean = g_key_file_get_boolean(config, "General",
208 "DebugKeys", &err);
209 if (err)
210 g_clear_error(&err);
211 else
212 main_opts.debug_keys = boolean;
213
214 boolean = g_key_file_get_boolean(config, "General",
215 "AttributeServer", &err);
216 if (err)
217 g_clear_error(&err);
218 else
219 main_opts.attrib_server = boolean;
220
221 boolean = g_key_file_get_boolean(config, "General",
222 "EnableLE", &err);
223 if (err)
224 g_clear_error(&err);
225 else
226 main_opts.le = boolean;
227
228 main_opts.link_mode = HCI_LM_ACCEPT;
229
230 main_opts.link_policy = HCI_LP_RSWITCH | HCI_LP_SNIFF |
231 HCI_LP_HOLD | HCI_LP_PARK;
232
233 str = g_key_file_get_string(config, "General",
234 "DefaultLinkPolicy", &err);
235 if (err)
236 g_clear_error(&err);
237 else {
238 DBG("default_link_policy=%s", str);
239 main_opts.link_policy &= strtol(str, NULL, 16);
240 }
241 }
242
init_defaults(void)243 static void init_defaults(void)
244 {
245 /* Default HCId settings */
246 memset(&main_opts, 0, sizeof(main_opts));
247 main_opts.mode = MODE_CONNECTABLE;
248 main_opts.name = g_strdup("BlueZ");
249 main_opts.discovto = DEFAULT_DISCOVERABLE_TIMEOUT;
250 main_opts.remember_powered = TRUE;
251 main_opts.reverse_sdp = TRUE;
252 main_opts.name_resolv = TRUE;
253 main_opts.link_mode = HCI_LM_ACCEPT;
254 main_opts.link_policy = HCI_LP_RSWITCH | HCI_LP_SNIFF |
255 HCI_LP_HOLD | HCI_LP_PARK;
256
257 if (gethostname(main_opts.host_name, sizeof(main_opts.host_name) - 1) < 0)
258 strcpy(main_opts.host_name, "noname");
259 }
260
261 static GMainLoop *event_loop;
262
sig_term(int sig)263 static void sig_term(int sig)
264 {
265 g_main_loop_quit(event_loop);
266 }
267
sig_debug(int sig)268 static void sig_debug(int sig)
269 {
270 __btd_toggle_debug();
271 }
272
273 static gchar *option_debug = NULL;
274 static gchar *option_plugin = NULL;
275 static gchar *option_noplugin = NULL;
276 static gboolean option_detach = TRUE;
277 static gboolean option_version = FALSE;
278 static gboolean option_udev = FALSE;
279
280 static guint last_adapter_timeout = 0;
281
exit_timeout(gpointer data)282 static gboolean exit_timeout(gpointer data)
283 {
284 g_main_loop_quit(event_loop);
285 last_adapter_timeout = 0;
286 return FALSE;
287 }
288
btd_start_exit_timer(void)289 void btd_start_exit_timer(void)
290 {
291 if (option_udev == FALSE)
292 return;
293
294 if (last_adapter_timeout > 0)
295 g_source_remove(last_adapter_timeout);
296
297 last_adapter_timeout = g_timeout_add_seconds(LAST_ADAPTER_EXIT_TIMEOUT,
298 exit_timeout, NULL);
299 }
300
btd_stop_exit_timer(void)301 void btd_stop_exit_timer(void)
302 {
303 if (last_adapter_timeout == 0)
304 return;
305
306 g_source_remove(last_adapter_timeout);
307 last_adapter_timeout = 0;
308 }
309
disconnect_dbus(void)310 static void disconnect_dbus(void)
311 {
312 DBusConnection *conn = get_dbus_connection();
313
314 if (!conn || !dbus_connection_get_is_connected(conn))
315 return;
316
317 manager_cleanup(conn, "/");
318
319 set_dbus_connection(NULL);
320
321 dbus_connection_unref(conn);
322 }
323
connect_dbus(void)324 static int connect_dbus(void)
325 {
326 DBusConnection *conn;
327 DBusError err;
328
329 dbus_error_init(&err);
330
331 conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, BLUEZ_NAME, &err);
332 if (!conn) {
333 if (dbus_error_is_set(&err)) {
334 dbus_error_free(&err);
335 return -EIO;
336 }
337 return -EALREADY;
338 }
339
340 if (!manager_init(conn, "/"))
341 return -EIO;
342
343 set_dbus_connection(conn);
344
345 return 0;
346 }
347
parse_debug(const char * key,const char * value,gpointer user_data,GError ** error)348 static gboolean parse_debug(const char *key, const char *value,
349 gpointer user_data, GError **error)
350 {
351 if (value)
352 option_debug = g_strdup(value);
353 else
354 option_debug = g_strdup("*");
355
356 return TRUE;
357 }
358
359 static GOptionEntry options[] = {
360 { "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
361 G_OPTION_ARG_CALLBACK, parse_debug,
362 "Specify debug options to enable", "DEBUG" },
363 { "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
364 "Specify plugins to load", "NAME,..," },
365 { "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
366 "Specify plugins not to load", "NAME,..." },
367 { "nodetach", 'n', G_OPTION_FLAG_REVERSE,
368 G_OPTION_ARG_NONE, &option_detach,
369 "Don't run as daemon in background" },
370 { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
371 "Show version information and exit" },
372 { "udev", 'u', 0, G_OPTION_ARG_NONE, &option_udev,
373 "Run from udev mode of operation" },
374 { NULL },
375 };
376
main(int argc,char * argv[])377 int main(int argc, char *argv[])
378 {
379 GOptionContext *context;
380 GError *err = NULL;
381 struct sigaction sa;
382 uint16_t mtu = 0;
383 GKeyFile *config;
384
385 #ifdef ANDROID_SET_AID_AND_CAP
386 /* Unfortunately Android's init.rc does not yet support applying
387 * capabilities. So we must do it in-process. */
388 void *android_set_aid_and_cap(void);
389 android_set_aid_and_cap();
390 #endif
391
392 init_defaults();
393
394 #ifdef HAVE_CAPNG
395 /* Drop capabilities */
396 capng_clear(CAPNG_SELECT_BOTH);
397 capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE | CAPNG_PERMITTED,
398 CAP_NET_BIND_SERVICE, CAP_NET_ADMIN,
399 CAP_NET_RAW, CAP_IPC_LOCK, -1);
400 capng_apply(CAPNG_SELECT_BOTH);
401 #endif
402
403 context = g_option_context_new(NULL);
404 g_option_context_add_main_entries(context, options, NULL);
405
406 if (g_option_context_parse(context, &argc, &argv, &err) == FALSE) {
407 if (err != NULL) {
408 g_printerr("%s\n", err->message);
409 g_error_free(err);
410 } else
411 g_printerr("An unknown error occurred\n");
412 exit(1);
413 }
414
415 g_option_context_free(context);
416
417 if (option_version == TRUE) {
418 printf("%s\n", VERSION);
419 exit(0);
420 }
421
422 if (option_udev == TRUE) {
423 int err;
424
425 option_detach = TRUE;
426 err = connect_dbus();
427 if (err < 0) {
428 if (err == -EALREADY)
429 exit(0);
430 exit(1);
431 }
432 }
433
434 if (option_detach == TRUE && option_udev == FALSE) {
435 if (daemon(0, 0)) {
436 perror("Can't start daemon");
437 exit(1);
438 }
439 }
440
441 umask(0077);
442
443 __btd_log_init(option_debug, option_detach);
444
445 memset(&sa, 0, sizeof(sa));
446 sa.sa_flags = SA_NOCLDSTOP;
447 sa.sa_handler = sig_term;
448 sigaction(SIGTERM, &sa, NULL);
449 sigaction(SIGINT, &sa, NULL);
450
451 sa.sa_handler = sig_debug;
452 sigaction(SIGUSR2, &sa, NULL);
453
454 sa.sa_handler = SIG_IGN;
455 sigaction(SIGPIPE, &sa, NULL);
456
457 config = load_config(CONFIGDIR "/main.conf");
458
459 parse_config(config);
460
461 agent_init();
462
463 if (option_udev == FALSE) {
464 if (connect_dbus() < 0) {
465 error("Unable to get on D-Bus");
466 exit(1);
467 }
468 } else {
469 if (daemon(0, 0)) {
470 perror("Can't start daemon");
471 exit(1);
472 }
473 }
474
475 start_sdp_server(mtu, main_opts.deviceid, SDP_SERVER_COMPAT);
476
477 if (main_opts.attrib_server) {
478 if (attrib_server_init() < 0)
479 error("Can't initialize attribute server");
480 }
481
482 /* Loading plugins has to be done after D-Bus has been setup since
483 * the plugins might wanna expose some paths on the bus. However the
484 * best order of how to init various subsystems of the Bluetooth
485 * daemon needs to be re-worked. */
486 plugin_init(config, option_plugin, option_noplugin);
487
488 event_loop = g_main_loop_new(NULL, FALSE);
489
490 if (adapter_ops_setup() < 0) {
491 error("adapter_ops_setup failed");
492 exit(1);
493 }
494
495 rfkill_init();
496
497 DBG("Entering main loop");
498
499 g_main_loop_run(event_loop);
500
501 disconnect_dbus();
502
503 rfkill_exit();
504
505 plugin_cleanup();
506
507 if (main_opts.attrib_server)
508 attrib_server_exit();
509
510 stop_sdp_server();
511
512 agent_exit();
513
514 g_main_loop_unref(event_loop);
515
516 if (config)
517 g_key_file_free(config);
518
519 info("Exit");
520
521 __btd_log_cleanup();
522
523 return 0;
524 }
525