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adapter.c
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adapter.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2006-2010 Nokia Corporation
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _GNU_SOURCE
#include <stdio.h>
#include <inttypes.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdbool.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <dirent.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "bluetooth/bluetooth.h"
#include "bluetooth/hci.h"
#include "bluetooth/hci_lib.h"
#include "bluetooth/sdp.h"
#include "bluetooth/sdp_lib.h"
#include "lib/uuid.h"
#include "lib/mgmt.h"
#include "gdbus/gdbus.h"
#include "log.h"
#include "textfile.h"
#include "src/shared/mgmt.h"
#include "src/shared/util.h"
#include "src/shared/queue.h"
#include "src/shared/att.h"
#include "src/shared/gatt-db.h"
#include "src/shared/timeout.h"
#include "btio/btio.h"
#include "btd.h"
#include "sdpd.h"
#include "adapter.h"
#include "device.h"
#include "profile.h"
#include "dbus-common.h"
#include "error.h"
#include "uuid-helper.h"
#include "agent.h"
#include "storage.h"
#include "attrib/gattrib.h"
#include "attrib/att.h"
#include "attrib/gatt.h"
#include "gatt-database.h"
#include "advertising.h"
#include "adv_monitor.h"
#include "eir.h"
#include "battery.h"
#define MODE_OFF 0x00
#define MODE_CONNECTABLE 0x01
#define MODE_DISCOVERABLE 0x02
#define MODE_UNKNOWN 0xff
#define CONN_SCAN_TIMEOUT (3)
#define IDLE_DISCOV_TIMEOUT (5)
#define TEMP_DEV_TIMEOUT (3 * 60)
#define BONDING_TIMEOUT (2 * 60)
#define SCAN_TYPE_BREDR (1 << BDADDR_BREDR)
#define SCAN_TYPE_LE ((1 << BDADDR_LE_PUBLIC) | (1 << BDADDR_LE_RANDOM))
#define SCAN_TYPE_DUAL (SCAN_TYPE_BREDR | SCAN_TYPE_LE)
#define HCI_RSSI_INVALID 127
#define DISTANCE_VAL_INVALID 0x7FFF
#define PATHLOSS_MAX 137
/*
* These are known security keys that have been compromised.
* If this grows or there are needs to be platform specific, it is
* conceivable that these could be read from a config file.
*/
static const struct mgmt_blocked_key_info blocked_keys[] = {
/* Google Titan Security Keys */
{ HCI_BLOCKED_KEY_TYPE_LTK,
{0xbf, 0x01, 0xfb, 0x9d, 0x4e, 0xf3, 0xbc, 0x36,
0xd8, 0x74, 0xf5, 0x39, 0x41, 0x38, 0x68, 0x4c}},
{ HCI_BLOCKED_KEY_TYPE_IRK,
{0xa5, 0x99, 0xba, 0xe4, 0xe1, 0x7c, 0xa6, 0x18,
0x22, 0x8e, 0x07, 0x56, 0xb4, 0xe8, 0x5f, 0x01}},
};
struct mgmt_exp_uuid {
uint8_t val[16];
const char *str;
};
/* d4992530-b9ec-469f-ab01-6c481c47da1c */
static const struct mgmt_exp_uuid debug_uuid = {
.val = { 0x1c, 0xda, 0x47, 0x1c, 0x48, 0x6c, 0x01, 0xab,
0x9f, 0x46, 0xec, 0xb9, 0x30, 0x25, 0x99, 0xd4 },
.str = "d4992530-b9ec-469f-ab01-6c481c47da1c"
};
/* 671b10b5-42c0-4696-9227-eb28d1b049d6 */
static const struct mgmt_exp_uuid le_simult_central_peripheral_uuid = {
.val = { 0xd6, 0x49, 0xb0, 0xd1, 0x28, 0xeb, 0x27, 0x92,
0x96, 0x46, 0xc0, 0x42, 0xb5, 0x10, 0x1b, 0x67 },
.str = "671b10b5-42c0-4696-9227-eb28d1b049d6"
};
/* 330859bc-7506-492d-9370-9a6f0614037f */
static const struct mgmt_exp_uuid quality_report_uuid = {
.val = { 0x7f, 0x03, 0x14, 0x06, 0x6f, 0x9a, 0x70, 0x93,
0x2d, 0x49, 0x06, 0x75, 0xbc, 0x59, 0x08, 0x33 },
.str = "330859bc-7506-492d-9370-9a6f0614037f"
};
/* 15c0a148-c273-11ea-b3de-0242ac130004 */
static const struct mgmt_exp_uuid rpa_resolution_uuid = {
.val = { 0x04, 0x00, 0x13, 0xac, 0x42, 0x02, 0xde, 0xb3,
0xea, 0x11, 0x73, 0xc2, 0x48, 0xa1, 0xc0, 0x15 },
.str = "15c0a148-c273-11ea-b3de-0242ac130004"
};
/* a6695ace-ee7f-4fb9-881a-5fac66c629af */
static const struct mgmt_exp_uuid codec_offload_uuid = {
.val = { 0xaf, 0x29, 0xc6, 0x66, 0xac, 0x5f, 0x1a, 0x88,
0xb9, 0x4f, 0x7f, 0xee, 0xce, 0x5a, 0x69, 0xa6 },
.str = "a6695ace-ee7f-4fb9-881a-5fac66c629af"
};
static DBusConnection *dbus_conn = NULL;
static uint32_t kernel_features = 0;
static GList *adapter_list = NULL;
static unsigned int adapter_remaining = 0;
static bool powering_down = false;
static GSList *adapters = NULL;
static struct mgmt *mgmt_primary = NULL;
static uint8_t mgmt_version = 0;
static uint8_t mgmt_revision = 0;
static GSList *adapter_drivers = NULL;
static GSList *disconnect_list = NULL;
static GSList *conn_fail_list = NULL;
struct link_key_info {
bdaddr_t bdaddr;
unsigned char key[16];
uint8_t type;
uint8_t pin_len;
bool is_blocked;
};
struct smp_ltk_info {
bdaddr_t bdaddr;
uint8_t bdaddr_type;
uint8_t authenticated;
bool central;
uint8_t enc_size;
uint16_t ediv;
uint64_t rand;
uint8_t val[16];
bool is_blocked;
};
struct irk_info {
bdaddr_t bdaddr;
uint8_t bdaddr_type;
uint8_t val[16];
bool is_blocked;
};
struct conn_param {
bdaddr_t bdaddr;
uint8_t bdaddr_type;
uint16_t min_interval;
uint16_t max_interval;
uint16_t latency;
uint16_t timeout;
};
struct discovery_filter {
uint8_t type;
char *pattern;
uint16_t pathloss;
int16_t rssi;
GSList *uuids;
bool duplicate;
bool discoverable;
};
struct discovery_client {
struct btd_adapter *adapter;
DBusMessage *msg;
char *owner;
guint watch;
struct discovery_filter *discovery_filter;
};
struct service_auth {
guint id;
unsigned int svc_id;
service_auth_cb cb;
void *user_data;
const char *uuid;
struct btd_device *device;
struct btd_adapter *adapter;
struct agent *agent; /* NULL for queued auths */
};
struct btd_adapter_pin_cb_iter {
GSList *it; /* current callback function */
unsigned int attempt; /* numer of times it() was called */
/* When the iterator reaches the end, it is NULL and attempt is 0 */
};
struct btd_adapter {
int ref_count;
uint16_t dev_id;
struct mgmt *mgmt;
bdaddr_t bdaddr; /* controller Bluetooth address */
uint8_t bdaddr_type; /* address type */
uint32_t dev_class; /* controller class of device */
char *name; /* controller device name */
char *short_name; /* controller short name */
uint32_t supported_settings; /* controller supported settings */
uint32_t pending_settings; /* pending controller settings */
uint32_t current_settings; /* current controller settings */
char *path; /* adapter object path */
uint16_t manufacturer; /* adapter manufacturer */
uint8_t major_class; /* configured major class */
uint8_t minor_class; /* configured minor class */
char *system_name; /* configured system name */
char *modalias; /* device id (modalias) */
bool stored_discoverable; /* stored discoverable mode */
uint32_t discoverable_timeout; /* discoverable time(sec) */
uint32_t pairable_timeout; /* pairable time(sec) */
char *current_alias; /* current adapter name alias */
char *stored_alias; /* stored adapter name alias */
bool discovering; /* discovering property state */
bool filtered_discovery; /* we are doing filtered discovery */
bool no_scan_restart_delay; /* when this flag is set, restart scan
* without delay */
uint8_t discovery_type; /* current active discovery type */
uint8_t discovery_enable; /* discovery enabled/disabled */
bool discovery_suspended; /* discovery has been suspended */
bool discovery_discoverable; /* discoverable while discovering */
GSList *discovery_list; /* list of discovery clients */
GSList *set_filter_list; /* list of clients that specified
* filter, but don't scan yet
*/
/* current discovery filter, if any */
struct mgmt_cp_start_service_discovery *current_discovery_filter;
struct discovery_client *client; /* active discovery client */
GSList *discovery_found; /* list of found devices */
unsigned int discovery_idle_timeout; /* timeout between discovery
* runs
*/
unsigned int passive_scan_timeout; /* timeout between passive scans */
unsigned int pairable_timeout_id; /* pairable timeout id */
guint auth_idle_id; /* Pending authorization dequeue */
GQueue *auths; /* Ongoing and pending auths */
bool pincode_requested; /* PIN requested during last bonding */
GSList *connections; /* Connected devices */
GSList *devices; /* Devices structure pointers */
GSList *connect_list; /* Devices to connect when found */
struct btd_device *connect_le; /* LE device waiting to be connected */
sdp_list_t *services; /* Services associated to adapter */
struct btd_gatt_database *database;
struct btd_adv_manager *adv_manager;
struct btd_adv_monitor_manager *adv_monitor_manager;
struct btd_battery_provider_manager *battery_provider_manager;
GHashTable *allowed_uuid_set; /* Set of allowed service UUIDs */
gboolean initialized;
GSList *pin_callbacks;
GSList *msd_callbacks;
GSList *drivers;
GSList *profiles;
struct oob_handler *oob_handler;
unsigned int db_id; /* Service event handler for GATT db */
bool is_default; /* true if adapter is default one */
struct queue *exps;
};
typedef enum {
ADAPTER_AUTHORIZE_DISCONNECTED = 0,
ADAPTER_AUTHORIZE_CHECK_CONNECTED
} adapter_authorize_type;
static struct btd_adapter *btd_adapter_lookup(uint16_t index)
{
GList *list;
for (list = g_list_first(adapter_list); list;
list = g_list_next(list)) {
struct btd_adapter *adapter = list->data;
if (adapter->dev_id == index)
return adapter;
}
return NULL;
}
struct btd_adapter *btd_adapter_get_default(void)
{
GList *list;
for (list = g_list_first(adapter_list); list;
list = g_list_next(list)) {
struct btd_adapter *adapter = list->data;
if (adapter->is_default)
return adapter;
}
return NULL;
}
bool btd_adapter_is_default(struct btd_adapter *adapter)
{
if (!adapter)
return false;
return adapter->is_default;
}
uint16_t btd_adapter_get_index(struct btd_adapter *adapter)
{
if (!adapter)
return MGMT_INDEX_NONE;
return adapter->dev_id;
}
static gboolean process_auth_queue(gpointer user_data);
static void dev_class_changed_callback(uint16_t index, uint16_t length,
const void *param, void *user_data)
{
struct btd_adapter *adapter = user_data;
const struct mgmt_cod *rp = param;
uint32_t dev_class;
if (length < sizeof(*rp)) {
btd_error(adapter->dev_id,
"Wrong size of class of device changed parameters");
return;
}
dev_class = rp->val[0] | (rp->val[1] << 8) | (rp->val[2] << 16);
if (dev_class == adapter->dev_class)
return;
DBG("Class: 0x%06x", dev_class);
adapter->dev_class = dev_class;
g_dbus_emit_property_changed(dbus_conn, adapter->path,
ADAPTER_INTERFACE, "Class");
}
static void set_dev_class_complete(uint8_t status, uint16_t length,
const void *param, void *user_data)
{
struct btd_adapter *adapter = user_data;
if (status != MGMT_STATUS_SUCCESS) {
btd_error(adapter->dev_id,
"Failed to set device class: %s (0x%02x)",
mgmt_errstr(status), status);
return;
}
/*
* The parameters are identical and also the task that is
* required in both cases. So it is safe to just call the
* event handling functions here.
*/
dev_class_changed_callback(adapter->dev_id, length, param, adapter);
}
static void set_dev_class(struct btd_adapter *adapter)
{
struct mgmt_cp_set_dev_class cp;
/*
* If the controller does not support BR/EDR operation,
* there is no point in trying to set a major and minor
* class value.
*
* This is an optimization for Low Energy only controllers.
*/
if (!(adapter->supported_settings & MGMT_SETTING_BREDR))
return;
memset(&cp, 0, sizeof(cp));
/*
* Silly workaround for a really stupid kernel bug :(
*
* All current kernel versions assign the major and minor numbers
* straight to dev_class[0] and dev_class[1] without considering
* the proper bit shifting.
*
* To make this work, shift the value in userspace for now until
* we get a fixed kernel version.
*/
cp.major = adapter->major_class & 0x1f;
cp.minor = adapter->minor_class << 2;
DBG("sending set device class command for index %u", adapter->dev_id);
if (mgmt_send(adapter->mgmt, MGMT_OP_SET_DEV_CLASS,
adapter->dev_id, sizeof(cp), &cp,
set_dev_class_complete, adapter, NULL) > 0)
return;
btd_error(adapter->dev_id,
"Failed to set class of device for index %u", adapter->dev_id);
}
void btd_adapter_set_class(struct btd_adapter *adapter, uint8_t major,
uint8_t minor)
{
if (adapter->major_class == major && adapter->minor_class == minor)
return;
DBG("class: major %u minor %u", major, minor);
adapter->major_class = major;
adapter->minor_class = minor;
set_dev_class(adapter);
}
static uint8_t get_mode(const char *mode)
{
if (strcasecmp("off", mode) == 0)
return MODE_OFF;
else if (strcasecmp("connectable", mode) == 0)
return MODE_CONNECTABLE;
else if (strcasecmp("discoverable", mode) == 0)
return MODE_DISCOVERABLE;
else
return MODE_UNKNOWN;
}
const char *btd_adapter_get_storage_dir(struct btd_adapter *adapter)
{
static char dir[25];
if (adapter->bdaddr_type == BDADDR_LE_RANDOM) {
strcpy(dir, "static-");
ba2str(&adapter->bdaddr, dir + 7);
} else {
ba2str(&adapter->bdaddr, dir);
}
return dir;
}
uint8_t btd_adapter_get_address_type(struct btd_adapter *adapter)
{
return adapter->bdaddr_type;
}
static void store_adapter_info(struct btd_adapter *adapter)
{
GKeyFile *key_file;
GError *gerr = NULL;
char filename[PATH_MAX];
char *str;
gsize length = 0;
gboolean discoverable;
key_file = g_key_file_new();
if (adapter->pairable_timeout != btd_opts.pairto)
g_key_file_set_integer(key_file, "General", "PairableTimeout",
adapter->pairable_timeout);
if ((adapter->current_settings & MGMT_SETTING_DISCOVERABLE) &&
!adapter->discoverable_timeout)
discoverable = TRUE;
else
discoverable = FALSE;
g_key_file_set_boolean(key_file, "General", "Discoverable",
discoverable);
if (adapter->discoverable_timeout != btd_opts.discovto)
g_key_file_set_integer(key_file, "General",
"DiscoverableTimeout",
adapter->discoverable_timeout);
if (adapter->stored_alias)
g_key_file_set_string(key_file, "General", "Alias",
adapter->stored_alias);
snprintf(filename, PATH_MAX, STORAGEDIR "/%s/settings",
btd_adapter_get_storage_dir(adapter));
create_file(filename, 0600);
str = g_key_file_to_data(key_file, &length, NULL);
if (!g_file_set_contents(filename, str, length, &gerr)) {
error("Unable set contents for %s: (%s)", filename,
gerr->message);
g_error_free(gerr);
}
g_free(str);
g_key_file_free(key_file);
}
static void trigger_pairable_timeout(struct btd_adapter *adapter);
static void adapter_start(struct btd_adapter *adapter);
static void adapter_stop(struct btd_adapter *adapter);
static void trigger_passive_scanning(struct btd_adapter *adapter);
static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
uint8_t mode);
static void settings_changed(struct btd_adapter *adapter, uint32_t settings)
{
uint32_t changed_mask;
changed_mask = adapter->current_settings ^ settings;
adapter->current_settings = settings;
adapter->pending_settings &= ~changed_mask;
DBG("Changed settings: 0x%08x", changed_mask);
DBG("Pending settings: 0x%08x", adapter->pending_settings);
if (changed_mask & MGMT_SETTING_POWERED) {
g_dbus_emit_property_changed(dbus_conn, adapter->path,
ADAPTER_INTERFACE, "Powered");
if (adapter->current_settings & MGMT_SETTING_POWERED) {
adapter_start(adapter);
} else {
adapter_stop(adapter);
if (powering_down) {
adapter_remaining--;
if (!adapter_remaining)
btd_exit();
}
}
}
if ((changed_mask & MGMT_SETTING_LE) &&
btd_adapter_get_powered(adapter) &&
(adapter->current_settings & MGMT_SETTING_LE))
trigger_passive_scanning(adapter);
if (changed_mask & MGMT_SETTING_DISCOVERABLE) {
g_dbus_emit_property_changed(dbus_conn, adapter->path,
ADAPTER_INTERFACE, "Discoverable");
/* Only persist discoverable setting if it was not set
* temporarily by discovery.
*/
if (!adapter->discovery_discoverable)
store_adapter_info(adapter);
btd_adv_manager_refresh(adapter->adv_manager);
}
if (changed_mask & MGMT_SETTING_BONDABLE) {
g_dbus_emit_property_changed(dbus_conn, adapter->path,
ADAPTER_INTERFACE, "Pairable");
trigger_pairable_timeout(adapter);
}
}
static void new_settings_callback(uint16_t index, uint16_t length,
const void *param, void *user_data)
{
struct btd_adapter *adapter = user_data;
uint32_t settings;
if (length < sizeof(settings)) {
btd_error(adapter->dev_id,
"Wrong size of new settings parameters");
return;
}
settings = get_le32(param);
if (settings == adapter->current_settings)
return;
DBG("Settings: 0x%08x", settings);
settings_changed(adapter, settings);
}
static void set_mode_complete(uint8_t status, uint16_t length,
const void *param, void *user_data)
{
struct btd_adapter *adapter = user_data;
if (status != MGMT_STATUS_SUCCESS) {
btd_error(adapter->dev_id, "Failed to set mode: %s (0x%02x)",
mgmt_errstr(status), status);
return;
}
/*
* The parameters are identical and also the task that is
* required in both cases. So it is safe to just call the
* event handling functions here.
*/
new_settings_callback(adapter->dev_id, length, param, adapter);
}
static void remove_temporary_devices(struct btd_adapter *adapter)
{
GSList *l, *next;
for (l = adapter->devices; l; l = next) {
struct btd_device *dev = l->data;
next = g_slist_next(l);
if (device_is_temporary(dev))
btd_adapter_remove_device(adapter, dev);
}
}
static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
uint8_t mode)
{
struct mgmt_mode cp;
uint32_t setting = 0;
memset(&cp, 0, sizeof(cp));
cp.val = mode;
switch (opcode) {
case MGMT_OP_SET_POWERED:
setting = MGMT_SETTING_POWERED;
break;
case MGMT_OP_SET_CONNECTABLE:
setting = MGMT_SETTING_CONNECTABLE;
break;
case MGMT_OP_SET_FAST_CONNECTABLE:
setting = MGMT_SETTING_FAST_CONNECTABLE;
break;
case MGMT_OP_SET_DISCOVERABLE:
setting = MGMT_SETTING_DISCOVERABLE;
break;
case MGMT_OP_SET_BONDABLE:
setting = MGMT_SETTING_BONDABLE;
break;
}
adapter->pending_settings |= setting;
DBG("sending set mode command for index %u", adapter->dev_id);
if (mgmt_send(adapter->mgmt, opcode,
adapter->dev_id, sizeof(cp), &cp,
set_mode_complete, adapter, NULL) > 0)
return true;
btd_error(adapter->dev_id, "Failed to set mode for index %u",
adapter->dev_id);
return false;
}
static bool set_discoverable(struct btd_adapter *adapter, uint8_t mode,
uint16_t timeout)
{
struct mgmt_cp_set_discoverable cp;
memset(&cp, 0, sizeof(cp));
cp.val = mode;
cp.timeout = htobs(timeout);
DBG("sending set mode command for index %u", adapter->dev_id);
if (btd_has_kernel_features(KERNEL_CONN_CONTROL)) {
if (mode)
set_mode(adapter, MGMT_OP_SET_CONNECTABLE, mode);
else
/* This also disables discoverable so we're done */
return set_mode(adapter, MGMT_OP_SET_CONNECTABLE,
mode);
}
if (mgmt_send(adapter->mgmt, MGMT_OP_SET_DISCOVERABLE,
adapter->dev_id, sizeof(cp), &cp,
set_mode_complete, adapter, NULL) > 0)
return true;
btd_error(adapter->dev_id, "Failed to set mode for index %u",
adapter->dev_id);
return false;
}
static bool pairable_timeout_handler(gpointer user_data)
{
struct btd_adapter *adapter = user_data;
adapter->pairable_timeout_id = 0;
set_mode(adapter, MGMT_OP_SET_BONDABLE, 0x00);
return FALSE;
}
static void trigger_pairable_timeout(struct btd_adapter *adapter)
{
if (adapter->pairable_timeout_id > 0) {
timeout_remove(adapter->pairable_timeout_id);
adapter->pairable_timeout_id = 0;
}
if (!(adapter->current_settings & MGMT_SETTING_BONDABLE))
return;
if (adapter->pairable_timeout > 0)
adapter->pairable_timeout_id =
timeout_add_seconds(adapter->pairable_timeout,
pairable_timeout_handler, adapter,
NULL);
}
static void local_name_changed_callback(uint16_t index, uint16_t length,
const void *param, void *user_data)
{
struct btd_adapter *adapter = user_data;
const struct mgmt_cp_set_local_name *rp = param;
if (length < sizeof(*rp)) {
btd_error(adapter->dev_id,
"Wrong size of local name changed parameters");
return;
}
if (!g_strcmp0(adapter->short_name, (const char *) rp->short_name) &&
!g_strcmp0(adapter->name, (const char *) rp->name))
return;
DBG("Name: %s", rp->name);
DBG("Short name: %s", rp->short_name);
g_free(adapter->name);
adapter->name = g_strdup((const char *) rp->name);
g_free(adapter->short_name);
adapter->short_name = g_strdup((const char *) rp->short_name);
/*
* Changing the name (even manually via HCI) will update the
* current alias property.
*
* In case the name is empty, use the short name.
*
* There is a difference between the stored alias (which is
* configured by the user) and the current alias. The current
* alias is temporary for the lifetime of the daemon.
*/
if (adapter->name && adapter->name[0] != '\0') {
g_free(adapter->current_alias);
adapter->current_alias = g_strdup(adapter->name);
} else {
g_free(adapter->current_alias);
adapter->current_alias = g_strdup(adapter->short_name);
}
DBG("Current alias: %s", adapter->current_alias);
if (!adapter->current_alias)
return;
g_dbus_emit_property_changed(dbus_conn, adapter->path,
ADAPTER_INTERFACE, "Alias");
}
static void set_local_name_complete(uint8_t status, uint16_t length,
const void *param, void *user_data)
{
struct btd_adapter *adapter = user_data;
if (status != MGMT_STATUS_SUCCESS) {
btd_error(adapter->dev_id,
"Failed to set local name: %s (0x%02x)",
mgmt_errstr(status), status);
return;
}
/*
* The parameters are identical and also the task that is
* required in both cases. So it is safe to just call the
* event handling functions here.
*/
local_name_changed_callback(adapter->dev_id, length, param, adapter);
}
static int set_name(struct btd_adapter *adapter, const char *name)
{
struct mgmt_cp_set_local_name cp;
char maxname[MAX_NAME_LENGTH];
memset(maxname, 0, sizeof(maxname));
strncpy(maxname, name, MAX_NAME_LENGTH - 1);
if (!g_utf8_validate(maxname, -1, NULL)) {
btd_error(adapter->dev_id,
"Name change failed: supplied name isn't valid UTF-8");
return -EINVAL;
}
memset(&cp, 0, sizeof(cp));
strncpy((char *) cp.name, maxname, sizeof(cp.name) - 1);
DBG("sending set local name command for index %u", adapter->dev_id);
if (mgmt_send(adapter->mgmt, MGMT_OP_SET_LOCAL_NAME,
adapter->dev_id, sizeof(cp), &cp,
set_local_name_complete, adapter, NULL) > 0)
return 0;
btd_error(adapter->dev_id, "Failed to set local name for index %u",
adapter->dev_id);
return -EIO;
}
int adapter_set_name(struct btd_adapter *adapter, const char *name)
{
if (g_strcmp0(adapter->system_name, name) == 0)
return 0;
DBG("name: %s", name);
g_free(adapter->system_name);
adapter->system_name = g_strdup(name);
g_dbus_emit_property_changed(dbus_conn, adapter->path,
ADAPTER_INTERFACE, "Name");
/* alias is preferred over system name */
if (adapter->stored_alias)
return 0;
DBG("alias: %s", name);
g_dbus_emit_property_changed(dbus_conn, adapter->path,
ADAPTER_INTERFACE, "Alias");
return set_name(adapter, name);
}
struct btd_device *btd_adapter_find_device(struct btd_adapter *adapter,
const bdaddr_t *dst,
uint8_t bdaddr_type)
{
struct device_addr_type addr;
struct btd_device *device;
GSList *list;
if (!adapter)
return NULL;
bacpy(&addr.bdaddr, dst);
addr.bdaddr_type = bdaddr_type;
list = g_slist_find_custom(adapter->devices, &addr,
device_addr_type_cmp);
if (!list)
return NULL;
device = list->data;
/*
* If we're looking up based on public address and the address
* was not previously used over this bearer we may need to
* update LE or BR/EDR support information.
*/
if (bdaddr_type == BDADDR_BREDR)
device_set_bredr_support(device);
else
device_set_le_support(device, bdaddr_type);
return device;
}
static int device_path_cmp(gconstpointer a, gconstpointer b)
{
const struct btd_device *device = a;
const char *path = b;
const char *dev_path = device_get_path(device);
return strcasecmp(dev_path, path);
}
struct btd_device *btd_adapter_find_device_by_path(struct btd_adapter *adapter,
const char *path)
{
GSList *list;
if (!adapter)
return NULL;
list = g_slist_find_custom(adapter->devices, path, device_path_cmp);
if (!list)
return NULL;
return list->data;
}
static void uuid_to_uuid128(uuid_t *uuid128, const uuid_t *uuid)
{
if (uuid->type == SDP_UUID16)
sdp_uuid16_to_uuid128(uuid128, uuid);
else if (uuid->type == SDP_UUID32)
sdp_uuid32_to_uuid128(uuid128, uuid);
else
memcpy(uuid128, uuid, sizeof(*uuid));
}
static bool is_supported_uuid(const uuid_t *uuid)
{
uuid_t tmp;
/* mgmt versions from 1.3 onwards support all types of UUIDs */
if (MGMT_VERSION(mgmt_version, mgmt_revision) >= MGMT_VERSION(1, 3))
return true;
uuid_to_uuid128(&tmp, uuid);
if (!sdp_uuid128_to_uuid(&tmp))
return false;
if (tmp.type != SDP_UUID16)
return false;
return true;
}
static void add_uuid_complete(uint8_t status, uint16_t length,
const void *param, void *user_data)
{
struct btd_adapter *adapter = user_data;
if (status != MGMT_STATUS_SUCCESS) {
btd_error(adapter->dev_id, "Failed to add UUID: %s (0x%02x)",
mgmt_errstr(status), status);
return;
}
/*
* The parameters are identical and also the task that is
* required in both cases. So it is safe to just call the
* event handling functions here.
*/
dev_class_changed_callback(adapter->dev_id, length, param, adapter);