blob: 7e6af42cdcae2ef0c2d25ce925aeee50e02aaf9d [file] [log] [blame]
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2000-2001 Qualcomm Incorporated
* Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
* Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <stdbool.h>
#include <sys/signalfd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "lib/bluetooth.h"
#include "lib/sdp.h"
#include "gdbus/gdbus.h"
#include "log.h"
#include "backtrace.h"
#include "lib/uuid.h"
#include "hcid.h"
#include "sdpd.h"
#include "adapter.h"
#include "device.h"
#include "dbus-common.h"
#include "agent.h"
#include "profile.h"
#include "systemd.h"
#define BLUEZ_NAME "org.bluez"
#define DEFAULT_PAIRABLE_TIMEOUT 0 /* disabled */
#define DEFAULT_DISCOVERABLE_TIMEOUT 180 /* 3 minutes */
#define SHUTDOWN_GRACE_SECONDS 10
struct main_opts main_opts;
static GKeyFile *main_conf;
static char *main_conf_file_path;
static enum {
MPS_OFF,
MPS_SINGLE,
MPS_MULTIPLE,
} mps = MPS_OFF;
static const char *supported_options[] = {
"Name",
"Class",
"DiscoverableTimeout",
"PairableTimeout",
"DeviceID",
"ReverseServiceDiscovery",
"NameResolving",
"DebugKeys",
"ControllerMode",
"MultiProfile",
"FastConnectable",
"Privacy",
NULL
};
static const char *policy_options[] = {
"ReconnectUUIDs",
"ReconnectAttempts",
"ReconnectIntervals",
"AutoEnable",
NULL
};
static const char *gatt_options[] = {
"Cache",
"MinEncKeySize",
NULL
};
static const struct group_table {
const char *name;
const char **options;
} valid_groups[] = {
{ "General", supported_options },
{ "Policy", policy_options },
{ "GATT", gatt_options },
{ }
};
GKeyFile *btd_get_main_conf(void)
{
return main_conf;
}
static GKeyFile *load_config(const char *file)
{
GError *err = NULL;
GKeyFile *keyfile;
keyfile = g_key_file_new();
g_key_file_set_list_separator(keyfile, ',');
if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
if (!g_error_matches(err, G_FILE_ERROR, G_FILE_ERROR_NOENT))
error("Parsing %s failed: %s", file, err->message);
g_error_free(err);
g_key_file_free(keyfile);
return NULL;
}
return keyfile;
}
static void parse_did(const char *did)
{
int result;
uint16_t vendor, product, version , source;
/* version and source are optional */
version = 0x0000;
source = 0x0002;
result = sscanf(did, "bluetooth:%4hx:%4hx:%4hx",
&vendor, &product, &version);
if (result != EOF && result >= 2) {
source = 0x0001;
goto done;
}
result = sscanf(did, "usb:%4hx:%4hx:%4hx",
&vendor, &product, &version);
if (result != EOF && result >= 2)
goto done;
result = sscanf(did, "%4hx:%4hx:%4hx", &vendor, &product, &version);
if (result == EOF || result < 2)
return;
done:
main_opts.did_source = source;
main_opts.did_vendor = vendor;
main_opts.did_product = product;
main_opts.did_version = version;
}
static bt_gatt_cache_t parse_gatt_cache(const char *cache)
{
if (!strcmp(cache, "always")) {
return BT_GATT_CACHE_ALWAYS;
} else if (!strcmp(cache, "yes")) {
return BT_GATT_CACHE_YES;
} else if (!strcmp(cache, "no")) {
return BT_GATT_CACHE_NO;
} else {
DBG("Invalid value for KeepCache=%s", cache);
return BT_GATT_CACHE_ALWAYS;
}
}
static void check_options(GKeyFile *config, const char *group,
const char **options)
{
char **keys;
int i;
keys = g_key_file_get_keys(config, group, NULL, NULL);
for (i = 0; keys != NULL && keys[i] != NULL; i++) {
bool found;
unsigned int j;
found = false;
for (j = 0; options != NULL && options[j] != NULL; j++) {
if (g_str_equal(keys[i], options[j])) {
found = true;
break;
}
}
if (!found)
warn("Unknown key %s for group %s in %s",
keys[i], group, main_conf_file_path);
}
g_strfreev(keys);
}
static void check_config(GKeyFile *config)
{
char **keys;
int i;
const struct group_table *group;
if (!config)
return;
keys = g_key_file_get_groups(config, NULL);
for (i = 0; keys != NULL && keys[i] != NULL; i++) {
bool match = false;
for (group = valid_groups; group && group->name ; group++) {
if (g_str_equal(keys[i], group->name)) {
match = true;
break;
}
}
if (!match)
warn("Unknown group %s in %s", keys[i],
main_conf_file_path);
}
g_strfreev(keys);
for (group = valid_groups; group && group->name; group++)
check_options(config, group->name, group->options);
}
static int get_mode(const char *str)
{
if (strcmp(str, "dual") == 0)
return BT_MODE_DUAL;
else if (strcmp(str, "bredr") == 0)
return BT_MODE_BREDR;
else if (strcmp(str, "le") == 0)
return BT_MODE_LE;
error("Unknown controller mode \"%s\"", str);
return BT_MODE_DUAL;
}
static void parse_config(GKeyFile *config)
{
GError *err = NULL;
char *str;
int val;
gboolean boolean;
if (!config)
return;
check_config(config);
DBG("parsing %s", main_conf_file_path);
val = g_key_file_get_integer(config, "General",
"DiscoverableTimeout", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
} else {
DBG("discovto=%d", val);
main_opts.discovto = val;
}
val = g_key_file_get_integer(config, "General",
"PairableTimeout", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
} else {
DBG("pairto=%d", val);
main_opts.pairto = val;
}
str = g_key_file_get_string(config, "General", "Privacy", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
main_opts.privacy = 0x00;
} else {
DBG("privacy=%s", str);
if (!strcmp(str, "device"))
main_opts.privacy = 0x01;
else if (!strcmp(str, "off"))
main_opts.privacy = 0x00;
else {
DBG("Invalid privacy option: %s", str);
main_opts.privacy = 0x00;
}
g_free(str);
}
str = g_key_file_get_string(config, "General", "Name", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
} else {
DBG("name=%s", str);
g_free(main_opts.name);
main_opts.name = str;
}
str = g_key_file_get_string(config, "General", "Class", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
} else {
DBG("class=%s", str);
main_opts.class = strtol(str, NULL, 16);
g_free(str);
}
str = g_key_file_get_string(config, "General", "DeviceID", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
} else {
DBG("deviceid=%s", str);
parse_did(str);
g_free(str);
}
boolean = g_key_file_get_boolean(config, "General",
"ReverseServiceDiscovery", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
} else
main_opts.reverse_sdp = boolean;
boolean = g_key_file_get_boolean(config, "General",
"NameResolving", &err);
if (err)
g_clear_error(&err);
else
main_opts.name_resolv = boolean;
boolean = g_key_file_get_boolean(config, "General",
"DebugKeys", &err);
if (err)
g_clear_error(&err);
else
main_opts.debug_keys = boolean;
str = g_key_file_get_string(config, "General", "ControllerMode", &err);
if (err) {
g_clear_error(&err);
} else {
DBG("ControllerMode=%s", str);
main_opts.mode = get_mode(str);
g_free(str);
}
str = g_key_file_get_string(config, "General", "MultiProfile", &err);
if (err) {
g_clear_error(&err);
} else {
DBG("MultiProfile=%s", str);
if (!strcmp(str, "single"))
mps = MPS_SINGLE;
else if (!strcmp(str, "multiple"))
mps = MPS_MULTIPLE;
g_free(str);
}
boolean = g_key_file_get_boolean(config, "General",
"FastConnectable", &err);
if (err)
g_clear_error(&err);
else
main_opts.fast_conn = boolean;
str = g_key_file_get_string(config, "GATT", "Cache", &err);
if (err) {
g_clear_error(&err);
main_opts.gatt_cache = BT_GATT_CACHE_ALWAYS;
} else {
main_opts.gatt_cache = parse_gatt_cache(str);
g_free(str);
}
val = g_key_file_get_integer(config, "GATT",
"MinEncKeySize", &err);
if (err) {
DBG("%s", err->message);
g_clear_error(&err);
} else {
DBG("MinEncKeySize=%d", val);
if (val >=7 && val <= 16)
main_opts.min_enc_key_size = val;
}
}
static void init_defaults(void)
{
uint8_t major, minor;
/* Default HCId settings */
memset(&main_opts, 0, sizeof(main_opts));
main_opts.name = g_strdup_printf("BlueZ %s", VERSION);
main_opts.class = 0x000000;
main_opts.pairto = DEFAULT_PAIRABLE_TIMEOUT;
main_opts.discovto = DEFAULT_DISCOVERABLE_TIMEOUT;
main_opts.reverse_sdp = TRUE;
main_opts.name_resolv = TRUE;
main_opts.debug_keys = FALSE;
if (sscanf(VERSION, "%hhu.%hhu", &major, &minor) != 2)
return;
main_opts.did_source = 0x0002; /* USB */
main_opts.did_vendor = 0x1d6b; /* Linux Foundation */
main_opts.did_product = 0x0246; /* BlueZ */
main_opts.did_version = (major << 8 | minor);
}
static void log_handler(const gchar *log_domain, GLogLevelFlags log_level,
const gchar *message, gpointer user_data)
{
int priority;
if (log_level & (G_LOG_LEVEL_ERROR |
G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING))
priority = 0x03;
else
priority = 0x06;
btd_log(0xffff, priority, "GLib: %s", message);
btd_backtrace(0xffff);
}
static GMainLoop *event_loop;
void btd_exit(void)
{
g_main_loop_quit(event_loop);
}
static gboolean quit_eventloop(gpointer user_data)
{
btd_exit();
return FALSE;
}
static gboolean signal_handler(GIOChannel *channel, GIOCondition cond,
gpointer user_data)
{
static bool terminated = false;
struct signalfd_siginfo si;
ssize_t result;
int fd;
if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP))
return FALSE;
fd = g_io_channel_unix_get_fd(channel);
result = read(fd, &si, sizeof(si));
if (result != sizeof(si))
return FALSE;
switch (si.ssi_signo) {
case SIGINT:
case SIGTERM:
if (!terminated) {
info("Terminating");
g_timeout_add_seconds(SHUTDOWN_GRACE_SECONDS,
quit_eventloop, NULL);
sd_notify(0, "STATUS=Powering down");
adapter_shutdown();
}
terminated = true;
break;
case SIGUSR2:
__btd_toggle_debug();
break;
}
return TRUE;
}
static guint setup_signalfd(void)
{
GIOChannel *channel;
guint source;
sigset_t mask;
int fd;
sigemptyset(&mask);
sigaddset(&mask, SIGINT);
sigaddset(&mask, SIGTERM);
sigaddset(&mask, SIGUSR2);
if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
perror("Failed to set signal mask");
return 0;
}
fd = signalfd(-1, &mask, 0);
if (fd < 0) {
perror("Failed to create signal descriptor");
return 0;
}
channel = g_io_channel_unix_new(fd);
g_io_channel_set_close_on_unref(channel, TRUE);
g_io_channel_set_encoding(channel, NULL, NULL);
g_io_channel_set_buffered(channel, FALSE);
source = g_io_add_watch(channel,
G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
signal_handler, NULL);
g_io_channel_unref(channel);
return source;
}
static char *option_debug = NULL;
static char *option_plugin = NULL;
static char *option_noplugin = NULL;
static char *option_configfile = NULL;
static gboolean option_compat = FALSE;
static gboolean option_detach = TRUE;
static gboolean option_version = FALSE;
static gboolean option_experimental = FALSE;
static void free_options(void)
{
g_free(option_debug);
option_debug = NULL;
g_free(option_plugin);
option_plugin = NULL;
g_free(option_noplugin);
option_noplugin = NULL;
g_free(option_configfile);
option_configfile = NULL;
}
static void disconnect_dbus(void)
{
DBusConnection *conn = btd_get_dbus_connection();
if (!conn || !dbus_connection_get_is_connected(conn))
return;
g_dbus_detach_object_manager(conn);
set_dbus_connection(NULL);
dbus_connection_unref(conn);
}
static void disconnected_dbus(DBusConnection *conn, void *data)
{
info("Disconnected from D-Bus. Exiting.");
g_main_loop_quit(event_loop);
}
static int connect_dbus(void)
{
DBusConnection *conn;
DBusError err;
dbus_error_init(&err);
conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, BLUEZ_NAME, &err);
if (!conn) {
if (dbus_error_is_set(&err)) {
g_printerr("D-Bus setup failed: %s\n", err.message);
dbus_error_free(&err);
return -EIO;
}
return -EALREADY;
}
set_dbus_connection(conn);
g_dbus_set_disconnect_function(conn, disconnected_dbus, NULL, NULL);
g_dbus_attach_object_manager(conn);
return 0;
}
static gboolean watchdog_callback(gpointer user_data)
{
sd_notify(0, "WATCHDOG=1");
return TRUE;
}
static gboolean parse_debug(const char *key, const char *value,
gpointer user_data, GError **error)
{
if (value)
option_debug = g_strdup(value);
else
option_debug = g_strdup("*");
return TRUE;
}
static GOptionEntry options[] = {
{ "debug", 'd', G_OPTION_FLAG_OPTIONAL_ARG,
G_OPTION_ARG_CALLBACK, parse_debug,
"Specify debug options to enable", "DEBUG" },
{ "plugin", 'p', 0, G_OPTION_ARG_STRING, &option_plugin,
"Specify plugins to load", "NAME,..," },
{ "noplugin", 'P', 0, G_OPTION_ARG_STRING, &option_noplugin,
"Specify plugins not to load", "NAME,..." },
{ "configfile", 'f', 0, G_OPTION_ARG_STRING, &option_configfile,
"Specify an explicit path to the config file", "FILE"},
{ "compat", 'C', 0, G_OPTION_ARG_NONE, &option_compat,
"Provide deprecated command line interfaces" },
{ "experimental", 'E', 0, G_OPTION_ARG_NONE, &option_experimental,
"Enable experimental interfaces" },
{ "nodetach", 'n', G_OPTION_FLAG_REVERSE,
G_OPTION_ARG_NONE, &option_detach,
"Run with logging in foreground" },
{ "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
"Show version information and exit" },
{ NULL },
};
int main(int argc, char *argv[])
{
GOptionContext *context;
GError *err = NULL;
uint16_t sdp_mtu = 0;
uint32_t sdp_flags = 0;
int gdbus_flags = 0;
guint signal, watchdog;
const char *watchdog_usec;
init_defaults();
context = g_option_context_new(NULL);
g_option_context_add_main_entries(context, options, NULL);
if (g_option_context_parse(context, &argc, &argv, &err) == FALSE) {
if (err != NULL) {
g_printerr("%s\n", err->message);
g_error_free(err);
} else
g_printerr("An unknown error occurred\n");
exit(1);
}
g_option_context_free(context);
if (option_version == TRUE) {
printf("%s\n", VERSION);
exit(0);
}
umask(0077);
btd_backtrace_init();
event_loop = g_main_loop_new(NULL, FALSE);
signal = setup_signalfd();
__btd_log_init(option_debug, option_detach);
g_log_set_handler("GLib", G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL |
G_LOG_FLAG_RECURSION,
log_handler, NULL);
sd_notify(0, "STATUS=Starting up");
if (option_configfile)
main_conf_file_path = option_configfile;
else
main_conf_file_path = CONFIGDIR "/main.conf";
main_conf = load_config(main_conf_file_path);
parse_config(main_conf);
if (connect_dbus() < 0) {
error("Unable to get on D-Bus");
exit(1);
}
if (option_experimental)
gdbus_flags = G_DBUS_FLAG_ENABLE_EXPERIMENTAL;
g_dbus_set_flags(gdbus_flags);
if (adapter_init() < 0) {
error("Adapter handling initialization failed");
exit(1);
}
btd_device_init();
btd_agent_init();
btd_profile_init();
if (main_opts.mode != BT_MODE_LE) {
if (option_compat == TRUE)
sdp_flags |= SDP_SERVER_COMPAT;
start_sdp_server(sdp_mtu, sdp_flags);
if (main_opts.did_source > 0)
register_device_id(main_opts.did_source,
main_opts.did_vendor,
main_opts.did_product,
main_opts.did_version);
}
if (mps != MPS_OFF)
register_mps(mps == MPS_MULTIPLE);
/* Loading plugins has to be done after D-Bus has been setup since
* the plugins might wanna expose some paths on the bus. However the
* best order of how to init various subsystems of the Bluetooth
* daemon needs to be re-worked. */
plugin_init(option_plugin, option_noplugin);
/* no need to keep parsed option in memory */
free_options();
rfkill_init();
DBG("Entering main loop");
sd_notify(0, "STATUS=Running");
sd_notify(0, "READY=1");
watchdog_usec = getenv("WATCHDOG_USEC");
if (watchdog_usec) {
unsigned int seconds;
seconds = atoi(watchdog_usec) / (1000 * 1000);
info("Watchdog timeout is %d seconds", seconds);
watchdog = g_timeout_add_seconds_full(G_PRIORITY_HIGH,
seconds / 2,
watchdog_callback,
NULL, NULL);
} else
watchdog = 0;
g_main_loop_run(event_loop);
sd_notify(0, "STATUS=Quitting");
g_source_remove(signal);
plugin_cleanup();
btd_profile_cleanup();
btd_agent_cleanup();
btd_device_cleanup();
adapter_cleanup();
rfkill_exit();
if (main_opts.mode != BT_MODE_LE)
stop_sdp_server();
g_main_loop_unref(event_loop);
if (main_conf)
g_key_file_free(main_conf);
disconnect_dbus();
info("Exit");
if (watchdog > 0)
g_source_remove(watchdog);
__btd_log_cleanup();
return 0;
}