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#include "bluetooth.h"
#include "common/strutil.h"
#ifdef FF_HAVE_DBUS
#include "common/dbus.h"
#include "common/io.h"
/* Example dbus reply, striped to only the relevant parts:
array [ //root
dict entry( //object
object path "/org/bluez/hci0/dev_03_21_8B_91_16_4D"
array [
dict entry( //property
string "org.bluez.Device1"
array [
dict entry( //value
string "Address"
variant string "03:21:8B:91:16:4D"
)
dict entry( //value
string "Name"
variant string "JBL TUNE160BT"
)
dict entry( //value
string "Icon"
variant string "audio-headset"
)
dict entry( //value
string "Connected"
variant boolean true
)
]
)
dict entry( //property
string "org.bluez.Battery1"
array [
dict entry( //value
string "Percentage"
variant byte 100
)
]
)
]
)
]
*/
static bool detectBluetoothValue(FFDBusData* dbus, DBusMessageIter* iter, FFBluetoothResult* device) {
if (dbus->lib->ffdbus_message_iter_get_arg_type(iter) != DBUS_TYPE_DICT_ENTRY) {
return true;
}
DBusMessageIter dictIter;
dbus->lib->ffdbus_message_iter_recurse(iter, &dictIter);
if (dbus->lib->ffdbus_message_iter_get_arg_type(&dictIter) != DBUS_TYPE_STRING) {
return true;
}
const char* deviceProperty;
dbus->lib->ffdbus_message_iter_get_basic(&dictIter, &deviceProperty);
dbus->lib->ffdbus_message_iter_next(&dictIter);
if (ffStrEquals(deviceProperty, "Address")) {
ffDBusGetString(dbus, &dictIter, &device->address);
} else if (ffStrEquals(deviceProperty, "Name")) {
ffDBusGetString(dbus, &dictIter, &device->name);
} else if (ffStrEquals(deviceProperty, "Icon")) {
ffDBusGetString(dbus, &dictIter, &device->type);
} else if (ffStrEquals(deviceProperty, "Percentage")) {
uint64_t percentage;
if (ffDBusGetUint(dbus, &dictIter, &percentage)) {
device->battery = (uint8_t) percentage;
}
} else if (ffStrEquals(deviceProperty, "Connected")) {
ffDBusGetBool(dbus, &dictIter, &device->connected);
} else if (ffStrEquals(deviceProperty, "Paired")) {
bool paired = true;
ffDBusGetBool(dbus, &dictIter, &paired);
if (!paired) {
return false;
}
}
return true;
}
static void detectBluetoothProperty(FFDBusData* dbus, DBusMessageIter* iter, FFBluetoothResult* device) {
if (dbus->lib->ffdbus_message_iter_get_arg_type(iter) != DBUS_TYPE_DICT_ENTRY) {
return;
}
DBusMessageIter dictIter;
dbus->lib->ffdbus_message_iter_recurse(iter, &dictIter);
if (dbus->lib->ffdbus_message_iter_get_arg_type(&dictIter) != DBUS_TYPE_STRING) {
return;
}
const char* propertyType;
dbus->lib->ffdbus_message_iter_get_basic(&dictIter, &propertyType);
if (!ffStrContains(propertyType, ".Device") && !ffStrContains(propertyType, ".Battery")) {
return; // We don't care about other properties
}
dbus->lib->ffdbus_message_iter_next(&dictIter);
if (dbus->lib->ffdbus_message_iter_get_arg_type(&dictIter) != DBUS_TYPE_ARRAY) {
return;
}
DBusMessageIter arrayIter;
dbus->lib->ffdbus_message_iter_recurse(&dictIter, &arrayIter);
do {
bool shouldContinue = detectBluetoothValue(dbus, &arrayIter, device);
if (!shouldContinue) {
ffStrbufClear(&device->name);
break;
}
} while (dbus->lib->ffdbus_message_iter_next(&arrayIter));
}
static FFBluetoothResult* detectBluetoothObject(FFlist* devices, FFDBusData* dbus, DBusMessageIter* iter) {
if (dbus->lib->ffdbus_message_iter_get_arg_type(iter) != DBUS_TYPE_DICT_ENTRY) {
return NULL;
}
DBusMessageIter dictIter;
dbus->lib->ffdbus_message_iter_recurse(iter, &dictIter);
if (dbus->lib->ffdbus_message_iter_get_arg_type(&dictIter) != DBUS_TYPE_OBJECT_PATH) {
return NULL;
}
const char* objectPath;
dbus->lib->ffdbus_message_iter_get_basic(&dictIter, &objectPath);
// We don't want adapter objects
if (!ffStrContains(objectPath, "/dev_")) {
return NULL;
}
dbus->lib->ffdbus_message_iter_next(&dictIter);
if (dbus->lib->ffdbus_message_iter_get_arg_type(&dictIter) != DBUS_TYPE_ARRAY) {
return NULL;
}
DBusMessageIter arrayIter;
dbus->lib->ffdbus_message_iter_recurse(&dictIter, &arrayIter);
FFBluetoothResult* device = FF_LIST_ADD(FFBluetoothResult, *devices);
ffStrbufInit(&device->name);
ffStrbufInit(&device->address);
ffStrbufInit(&device->type);
device->battery = 0;
device->connected = false;
do {
detectBluetoothProperty(dbus, &arrayIter, device);
} while (dbus->lib->ffdbus_message_iter_next(&arrayIter));
return device;
}
static void detectBluetoothRoot(FFBluetoothOptions* options, FFlist* devices, FFDBusData* dbus, DBusMessageIter* iter, int32_t connectedCount) {
if (dbus->lib->ffdbus_message_iter_get_arg_type(iter) != DBUS_TYPE_ARRAY) {
return;
}
DBusMessageIter arrayIter;
dbus->lib->ffdbus_message_iter_recurse(iter, &arrayIter);
do {
FFBluetoothResult* device = detectBluetoothObject(devices, dbus, &arrayIter);
if (device) {
if (!options->showDisconnected && !device->connected) {
ffStrbufDestroy(&device->name);
ffStrbufDestroy(&device->address);
ffStrbufDestroy(&device->type);
--devices->length;
}
if (device->name.length == 0) {
ffStrbufSetStatic(&device->name, "Unknown Device");
}
if (device->connected && --connectedCount == 0) {
break;
}
}
} while (dbus->lib->ffdbus_message_iter_next(&arrayIter));
}
static const char* detectBluetooth(FFBluetoothOptions* options, FFlist* devices, int32_t connectedCount) {
FF_DBUS_AUTO_DESTROY_DATA FFDBusData dbus = {};
const char* error = ffDBusLoadData(DBUS_BUS_SYSTEM, &dbus);
if (error) {
return error;
}
DBusMessage* managedObjects = ffDBusGetMethodReply(&dbus, "org.bluez", "/", "org.freedesktop.DBus.ObjectManager", "GetManagedObjects", NULL, NULL);
if (!managedObjects) {
return "Failed to call GetManagedObjects";
}
DBusMessageIter rootIter;
if (!dbus.lib->ffdbus_message_iter_init(managedObjects, &rootIter)) {
dbus.lib->ffdbus_message_unref(managedObjects);
return "Failed to get root iterator of GetManagedObjects";
}
detectBluetoothRoot(options, devices, &dbus, &rootIter, connectedCount);
dbus.lib->ffdbus_message_unref(managedObjects);
return NULL;
}
static uint32_t connectedDevices(void) {
FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/sys/class/bluetooth");
if (dirp == NULL) {
return 0;
}
uint32_t result = 0;
struct dirent* entry;
while ((entry = readdir(dirp)) != NULL) {
if (strchr(entry->d_name, ':') != NULL) {
++result;
}
}
return result;
}
#endif
const char* ffDetectBluetooth(FFBluetoothOptions* options, FFlist* devices /* FFBluetoothResult */) {
#ifdef FF_HAVE_DBUS
int32_t connectedCount = -1;
if (!options->showDisconnected) {
connectedCount = (int32_t) connectedDevices();
if (connectedCount == 0) {
return NULL;
}
}
return detectBluetooth(options, devices, connectedCount);
#else
FF_UNUSED(options, devices);
return "Fastfetch was compiled without DBus support";
#endif
}
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