1 files changed, 153 insertions, 0 deletions
diff --git a/src/detection/bluetoothradio/bluetoothradio_linux.c b/src/detection/bluetoothradio/bluetoothradio_linux.c
new file mode 100644
index 0000000..a7d92a4
--- /dev/null
+++ b/src/detection/bluetoothradio/bluetoothradio_linux.c
@@ -0,0 +1,153 @@
+#include "bluetoothradio.h"
+#include "common/strutil.h"
+
+#ifdef FF_HAVE_DBUS
+    #include "common/dbus.h"
+    #include "common/io.h"
+
+/* Example dbus reply:
+array [
+    dict entry(
+        string "Address"
+        variant string "XX:XX:XX:XX:XX:XX"
+    )
+    dict entry(
+        string "Name"
+        variant string "xxxxxxxx"
+    )
+    dict entry(
+        string "Powered"
+        variant boolean true
+    )
+    dict entry(
+        string "PowerState"
+        variant string "on"
+    )
+    dict entry(
+        string "Manufacturer"
+        variant uint16 2
+    )
+    dict entry(
+        string "Version"
+        variant byte 12
+    )
+]
+*/
+
+static const char* detectBluetoothProperty(FFBluetoothRadioResult* device, FFDBusData* dbus, DBusMessageIter* iter) {
+    if (dbus->lib->ffdbus_message_iter_get_arg_type(iter) != DBUS_TYPE_DICT_ENTRY) {
+        return "Expected dict entry";
+    }
+
+    DBusMessageIter dictIter;
+    dbus->lib->ffdbus_message_iter_recurse(iter, &dictIter);
+
+    if (dbus->lib->ffdbus_message_iter_get_arg_type(&dictIter) != DBUS_TYPE_STRING) {
+        return "Expected dict entry key to be a string";
+    }
+
+    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, "Alias")) {
+        ffDBusGetString(dbus, &dictIter, &device->name);
+    } else if (ffStrEquals(deviceProperty, "Manufacturer")) {
+        uint64_t vendorId;
+        if (ffDBusGetUint(dbus, &dictIter, &vendorId)) {
+            ffStrbufSetStatic(&device->vendor, ffBluetoothRadioGetVendor((uint32_t) vendorId));
+        }
+    } else if (ffStrEquals(deviceProperty, "Version")) {
+        uint64_t version;
+        if (ffDBusGetUint(dbus, &dictIter, &version)) {
+            device->lmpVersion = (int32_t) version;
+        }
+    } else if (ffStrEquals(deviceProperty, "Powered")) {
+        ffDBusGetBool(dbus, &dictIter, &device->enabled);
+    } else if (ffStrEquals(deviceProperty, "Discoverable")) {
+        ffDBusGetBool(dbus, &dictIter, &device->discoverable);
+    } else if (ffStrEquals(deviceProperty, "Pairable")) {
+        ffDBusGetBool(dbus, &dictIter, &device->connectable);
+    }
+
+    return NULL;
+}
+
+static const char* detectBluetoothRoot(FFBluetoothRadioResult* device, const char* hciName, FFDBusData* dbus) {
+    char objPath[300];
+    snprintf(objPath, sizeof(objPath), "/org/bluez/%s", hciName);
+
+    DBusMessage* properties = ffDBusGetMethodReply(dbus, "org.bluez", objPath, "org.freedesktop.DBus.Properties", "GetAll", "org.bluez.Adapter1", NULL);
+    if (!properties) {
+        return "Failed to call org.freedesktop.DBus.Properties.GetAll";
+    }
+
+    DBusMessageIter rootIter;
+    if (!dbus->lib->ffdbus_message_iter_init(properties, &rootIter)) {
+        dbus->lib->ffdbus_message_unref(properties);
+        return "Failed to get root iterator of org.freedesktop.DBus.Properties.GetAll";
+    }
+
+    if (dbus->lib->ffdbus_message_iter_get_arg_type(&rootIter) != DBUS_TYPE_ARRAY) {
+        dbus->lib->ffdbus_message_unref(properties);
+        return "Expected array";
+    }
+
+    DBusMessageIter arrayIter;
+    dbus->lib->ffdbus_message_iter_recurse(&rootIter, &arrayIter);
+
+    do {
+        detectBluetoothProperty(device, dbus, &arrayIter);
+    } while (dbus->lib->ffdbus_message_iter_next(&arrayIter));
+
+    dbus->lib->ffdbus_message_unref(properties);
+    return NULL;
+}
+
+static const char* detectBluetooth(FFlist* devices) {
+    FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/sys/class/bluetooth");
+    if (dirp == NULL) {
+        return "Failed to open /sys/class/bluetooth";
+    }
+
+    FF_DBUS_AUTO_DESTROY_DATA FFDBusData dbus = {};
+    const char* error = ffDBusLoadData(DBUS_BUS_SYSTEM, &dbus);
+    if (error) {
+        return error;
+    }
+
+    struct dirent* entry;
+    while ((entry = readdir(dirp)) != NULL) {
+        if (entry->d_name[0] == '.') {
+            continue;
+        }
+
+        if (strchr(entry->d_name, ':') != NULL) { // ignore connected devices
+            continue;
+        }
+
+        FFBluetoothRadioResult* device = FF_LIST_ADD(FFBluetoothRadioResult, *devices);
+        ffStrbufInit(&device->name);
+        ffStrbufInit(&device->address);
+        ffStrbufInitStatic(&device->vendor, "Unknown");
+        device->lmpVersion = INT_MIN;
+        device->lmpSubversion = INT_MIN;
+        device->enabled = false;
+        detectBluetoothRoot(device, entry->d_name, &dbus);
+    }
+    return NULL;
+}
+
+#endif
+
+const char* ffDetectBluetoothRadio(FFlist* devices /* FFBluetoothRadioResult */) {
+#ifdef FF_HAVE_DBUS
+    return detectBluetooth(devices);
+#else
+    FF_UNUSED(devices)
+    return "Fastfetch was compiled without DBus support";
+#endif
+}