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-rw-r--r--src/core/devices/bluetooth/nm-device-bt.c1412
1 files changed, 1412 insertions, 0 deletions
diff --git a/src/core/devices/bluetooth/nm-device-bt.c b/src/core/devices/bluetooth/nm-device-bt.c
new file mode 100644
index 00000000..c07be2d3
--- /dev/null
+++ b/src/core/devices/bluetooth/nm-device-bt.c
@@ -0,0 +1,1412 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2009 - 2011 Red Hat, Inc.
+ */
+
+#include "src/core/nm-default-daemon.h"
+
+#include "nm-device-bt.h"
+
+#include <stdio.h>
+#include <linux/if_ether.h>
+
+#include "nm-core-internal.h"
+#include "nm-bluez-common.h"
+#include "nm-bluez-manager.h"
+#include "devices/nm-device-private.h"
+#include "ppp/nm-ppp-manager.h"
+#include "nm-setting-connection.h"
+#include "nm-setting-bluetooth.h"
+#include "nm-setting-cdma.h"
+#include "nm-setting-gsm.h"
+#include "nm-setting-serial.h"
+#include "nm-setting-ppp.h"
+#include "NetworkManagerUtils.h"
+#include "settings/nm-settings-connection.h"
+#include "nm-utils.h"
+#include "nm-bt-error.h"
+#include "nm-ip4-config.h"
+#include "platform/nm-platform.h"
+
+#include "devices/wwan/nm-modem-manager.h"
+#include "devices/wwan/nm-modem.h"
+
+#define _NMLOG_DEVICE_TYPE NMDeviceBt
+#include "devices/nm-device-logging.h"
+
+/*****************************************************************************/
+
+NM_GOBJECT_PROPERTIES_DEFINE(NMDeviceBt,
+                             PROP_BT_BDADDR,
+                             PROP_BT_BZ_MGR,
+                             PROP_BT_CAPABILITIES,
+                             PROP_BT_DBUS_PATH,
+                             PROP_BT_NAME, );
+
+enum {
+    PPP_STATS,
+    LAST_SIGNAL,
+};
+
+static guint signals[LAST_SIGNAL] = {0};
+
+typedef struct {
+    NMModemManager *modem_manager;
+
+    NMBluezManager *bz_mgr;
+
+    char *dbus_path;
+
+    char *bdaddr;
+    char *name;
+
+    char *connect_rfcomm_iface;
+
+    GSList *connect_modem_candidates;
+
+    NMModem *modem;
+
+    GCancellable *connect_bz_cancellable;
+
+    gulong connect_watch_link_id;
+
+    guint connect_watch_link_idle_id;
+
+    guint connect_wait_modem_id;
+
+    NMBluetoothCapabilities capabilities : 6;
+
+    NMBluetoothCapabilities connect_bt_type : 6; /* BT type of the current connection */
+
+    NMDeviceStageState stage1_bt_state : 3;
+    NMDeviceStageState stage1_modem_prepare_state : 3;
+
+    bool is_connected : 1;
+
+    bool mm_running : 1;
+
+} NMDeviceBtPrivate;
+
+struct _NMDeviceBt {
+    NMDevice          parent;
+    NMDeviceBtPrivate _priv;
+};
+
+struct _NMDeviceBtClass {
+    NMDeviceClass parent;
+};
+
+G_DEFINE_TYPE(NMDeviceBt, nm_device_bt, NM_TYPE_DEVICE)
+
+#define NM_DEVICE_BT_GET_PRIVATE(self) _NM_GET_PRIVATE(self, NMDeviceBt, NM_IS_DEVICE_BT, NMDevice)
+
+/*****************************************************************************/
+
+NMBluetoothCapabilities
+nm_device_bt_get_capabilities(NMDeviceBt *self)
+{
+    g_return_val_if_fail(NM_IS_DEVICE_BT(self), NM_BT_CAPABILITY_NONE);
+
+    return NM_DEVICE_BT_GET_PRIVATE(self)->capabilities;
+}
+
+static NMBluetoothCapabilities
+get_connection_bt_type(NMConnection *connection)
+{
+    NMSettingBluetooth *s_bt;
+    const char *        bt_type;
+
+    s_bt = nm_connection_get_setting_bluetooth(connection);
+
+    if (s_bt) {
+        bt_type = nm_setting_bluetooth_get_connection_type(s_bt);
+        if (bt_type) {
+            if (nm_streq(bt_type, NM_SETTING_BLUETOOTH_TYPE_DUN))
+                return NM_BT_CAPABILITY_DUN;
+            else if (nm_streq(bt_type, NM_SETTING_BLUETOOTH_TYPE_PANU))
+                return NM_BT_CAPABILITY_NAP;
+        }
+    }
+
+    return NM_BT_CAPABILITY_NONE;
+}
+
+static gboolean
+get_connection_bt_type_check(NMDeviceBt *             self,
+                             NMConnection *           connection,
+                             NMBluetoothCapabilities *out_bt_type,
+                             GError **                error)
+{
+    NMBluetoothCapabilities bt_type;
+
+    bt_type = get_connection_bt_type(connection);
+
+    NM_SET_OUT(out_bt_type, bt_type);
+
+    if (bt_type == NM_BT_CAPABILITY_NONE) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,
+                                   "profile is not a PANU/DUN bluetooth type");
+        return FALSE;
+    }
+
+    if (!NM_FLAGS_ALL(NM_DEVICE_BT_GET_PRIVATE(self)->capabilities, bt_type)) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,
+                                   "device does not support bluetooth type");
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+static NMDeviceCapabilities
+get_generic_capabilities(NMDevice *device)
+{
+    return NM_DEVICE_CAP_IS_NON_KERNEL;
+}
+
+static gboolean
+can_auto_connect(NMDevice *device, NMSettingsConnection *sett_conn, char **specific_object)
+{
+    NMDeviceBt *            self = NM_DEVICE_BT(device);
+    NMDeviceBtPrivate *     priv = NM_DEVICE_BT_GET_PRIVATE(self);
+    NMBluetoothCapabilities bt_type;
+
+    nm_assert(!specific_object || !*specific_object);
+
+    if (!NM_DEVICE_CLASS(nm_device_bt_parent_class)->can_auto_connect(device, sett_conn, NULL))
+        return FALSE;
+
+    if (!get_connection_bt_type_check(self,
+                                      nm_settings_connection_get_connection(sett_conn),
+                                      &bt_type,
+                                      NULL))
+        return FALSE;
+
+    /* Can't auto-activate a DUN connection without ModemManager */
+    if (bt_type == NM_BT_CAPABILITY_DUN && priv->mm_running == FALSE)
+        return FALSE;
+
+    return TRUE;
+}
+
+static gboolean
+check_connection_compatible(NMDevice *device, NMConnection *connection, GError **error)
+{
+    NMDeviceBt *        self = NM_DEVICE_BT(device);
+    NMDeviceBtPrivate * priv = NM_DEVICE_BT_GET_PRIVATE(self);
+    NMSettingBluetooth *s_bt;
+    const char *        bdaddr;
+
+    if (!NM_DEVICE_CLASS(nm_device_bt_parent_class)
+             ->check_connection_compatible(device, connection, error))
+        return FALSE;
+
+    if (!get_connection_bt_type_check(self, connection, NULL, error))
+        return FALSE;
+
+    s_bt = nm_connection_get_setting_bluetooth(connection);
+
+    bdaddr = nm_setting_bluetooth_get_bdaddr(s_bt);
+    if (!bdaddr) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,
+                                   "profile lacks bdaddr setting");
+        return FALSE;
+    }
+    if (!nm_utils_hwaddr_matches(priv->bdaddr, -1, bdaddr, -1)) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,
+                                   "devices bdaddr setting mismatches");
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+static gboolean
+check_connection_available(NMDevice *                     device,
+                           NMConnection *                 connection,
+                           NMDeviceCheckConAvailableFlags flags,
+                           const char *                   specific_object,
+                           GError **                      error)
+{
+    NMDeviceBt *            self = NM_DEVICE_BT(device);
+    NMDeviceBtPrivate *     priv = NM_DEVICE_BT_GET_PRIVATE(self);
+    NMBluetoothCapabilities bt_type;
+
+    if (!get_connection_bt_type_check(self, connection, &bt_type, error))
+        return FALSE;
+
+    if (bt_type == NM_BT_CAPABILITY_DUN && !priv->mm_running) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,
+                                   "ModemManager missing for DUN profile");
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+static gboolean
+complete_connection(NMDevice *           device,
+                    NMConnection *       connection,
+                    const char *         specific_object,
+                    NMConnection *const *existing_connections,
+                    GError **            error)
+{
+    NMDeviceBtPrivate * priv = NM_DEVICE_BT_GET_PRIVATE(device);
+    NMSettingBluetooth *s_bt;
+    const char *        setting_bdaddr;
+    const char *        ctype;
+    gboolean            is_dun = FALSE;
+    gboolean            is_pan = FALSE;
+    NMSettingGsm *      s_gsm;
+    NMSettingCdma *     s_cdma;
+    NMSettingSerial *   s_serial;
+    NMSettingPpp *      s_ppp;
+    const char *        fallback_prefix = NULL, *preferred = NULL;
+
+    s_gsm    = nm_connection_get_setting_gsm(connection);
+    s_cdma   = nm_connection_get_setting_cdma(connection);
+    s_serial = nm_connection_get_setting_serial(connection);
+    s_ppp    = nm_connection_get_setting_ppp(connection);
+
+    s_bt = nm_connection_get_setting_bluetooth(connection);
+    if (!s_bt) {
+        s_bt = (NMSettingBluetooth *) nm_setting_bluetooth_new();
+        nm_connection_add_setting(connection, NM_SETTING(s_bt));
+    }
+
+    ctype = nm_setting_bluetooth_get_connection_type(s_bt);
+    if (ctype) {
+        if (!strcmp(ctype, NM_SETTING_BLUETOOTH_TYPE_DUN))
+            is_dun = TRUE;
+        else if (!strcmp(ctype, NM_SETTING_BLUETOOTH_TYPE_PANU))
+            is_pan = TRUE;
+    } else {
+        if (s_gsm || s_cdma)
+            is_dun = TRUE;
+        else if (priv->capabilities & NM_BT_CAPABILITY_NAP)
+            is_pan = TRUE;
+    }
+
+    if (is_pan) {
+        /* Make sure the device supports PAN */
+        if (!(priv->capabilities & NM_BT_CAPABILITY_NAP)) {
+            g_set_error_literal(error,
+                                NM_CONNECTION_ERROR,
+                                NM_CONNECTION_ERROR_INVALID_PROPERTY,
+                                _("PAN requested, but Bluetooth device does not support NAP"));
+            g_prefix_error(error,
+                           "%s.%s: ",
+                           NM_SETTING_BLUETOOTH_SETTING_NAME,
+                           NM_SETTING_BLUETOOTH_TYPE);
+            return FALSE;
+        }
+
+        /* PAN can't use any DUN-related settings */
+        if (s_gsm || s_cdma || s_serial || s_ppp) {
+            g_set_error_literal(error,
+                                NM_CONNECTION_ERROR,
+                                NM_CONNECTION_ERROR_INVALID_SETTING,
+                                _("PAN connections cannot specify GSM, CDMA, or serial settings"));
+            g_prefix_error(error,
+                           "%s: ",
+                           s_gsm      ? NM_SETTING_GSM_SETTING_NAME
+                           : s_cdma   ? NM_SETTING_CDMA_SETTING_NAME
+                           : s_serial ? NM_SETTING_SERIAL_SETTING_NAME
+                                      : NM_SETTING_PPP_SETTING_NAME);
+            return FALSE;
+        }
+
+        g_object_set(G_OBJECT(s_bt),
+                     NM_SETTING_BLUETOOTH_TYPE,
+                     NM_SETTING_BLUETOOTH_TYPE_PANU,
+                     NULL);
+
+        fallback_prefix = _("PAN connection");
+    } else if (is_dun) {
+        /* Make sure the device supports PAN */
+        if (!(priv->capabilities & NM_BT_CAPABILITY_DUN)) {
+            g_set_error_literal(error,
+                                NM_CONNECTION_ERROR,
+                                NM_CONNECTION_ERROR_INVALID_PROPERTY,
+                                _("DUN requested, but Bluetooth device does not support DUN"));
+            g_prefix_error(error,
+                           "%s.%s: ",
+                           NM_SETTING_BLUETOOTH_SETTING_NAME,
+                           NM_SETTING_BLUETOOTH_TYPE);
+            return FALSE;
+        }
+
+        /* Need at least a GSM or a CDMA setting */
+        if (!s_gsm && !s_cdma) {
+            g_set_error_literal(error,
+                                NM_CONNECTION_ERROR,
+                                NM_CONNECTION_ERROR_INVALID_SETTING,
+                                _("DUN connection must include a GSM or CDMA setting"));
+            g_prefix_error(error, "%s: ", NM_SETTING_BLUETOOTH_SETTING_NAME);
+            return FALSE;
+        }
+
+        g_object_set(G_OBJECT(s_bt),
+                     NM_SETTING_BLUETOOTH_TYPE,
+                     NM_SETTING_BLUETOOTH_TYPE_DUN,
+                     NULL);
+
+        if (s_gsm) {
+            fallback_prefix = _("GSM connection");
+        } else {
+            fallback_prefix = _("CDMA connection");
+            if (!nm_setting_cdma_get_number(s_cdma))
+                g_object_set(G_OBJECT(s_cdma), NM_SETTING_CDMA_NUMBER, "#777", NULL);
+        }
+    } else {
+        g_set_error_literal(error,
+                            NM_CONNECTION_ERROR,
+                            NM_CONNECTION_ERROR_INVALID_PROPERTY,
+                            _("Unknown/unhandled Bluetooth connection type"));
+        g_prefix_error(error,
+                       "%s.%s: ",
+                       NM_SETTING_BLUETOOTH_SETTING_NAME,
+                       NM_SETTING_BLUETOOTH_TYPE);
+        return FALSE;
+    }
+
+    nm_utils_complete_generic(nm_device_get_platform(device),
+                              connection,
+                              NM_SETTING_BLUETOOTH_SETTING_NAME,
+                              existing_connections,
+                              preferred,
+                              fallback_prefix,
+                              NULL,
+                              NULL,
+                              is_dun ? FALSE : TRUE); /* No IPv6 yet for DUN */
+
+    setting_bdaddr = nm_setting_bluetooth_get_bdaddr(s_bt);
+    if (setting_bdaddr) {
+        /* Make sure the setting BT Address (if any) matches the device's */
+        if (!nm_utils_hwaddr_matches(setting_bdaddr, -1, priv->bdaddr, -1)) {
+            g_set_error_literal(error,
+                                NM_CONNECTION_ERROR,
+                                NM_CONNECTION_ERROR_INVALID_PROPERTY,
+                                _("connection does not match device"));
+            g_prefix_error(error,
+                           "%s.%s: ",
+                           NM_SETTING_BLUETOOTH_SETTING_NAME,
+                           NM_SETTING_BLUETOOTH_BDADDR);
+            return FALSE;
+        }
+    } else {
+        /* Lock the connection to this device by default */
+        if (!nm_utils_hwaddr_matches(priv->bdaddr, -1, NULL, ETH_ALEN))
+            g_object_set(G_OBJECT(s_bt), NM_SETTING_BLUETOOTH_BDADDR, priv->bdaddr, NULL);
+    }
+
+    return TRUE;
+}
+
+/*****************************************************************************/
+/* IP method PPP */
+
+static void
+ppp_stats(NMModem *modem, guint i_in_bytes, guint i_out_bytes, gpointer user_data)
+{
+    guint32 in_bytes  = i_in_bytes;
+    guint32 out_bytes = i_out_bytes;
+
+    g_signal_emit(NM_DEVICE_BT(user_data),
+                  signals[PPP_STATS],
+                  0,
+                  (guint) in_bytes,
+                  (guint) out_bytes);
+}
+
+static void
+ppp_failed(NMModem *modem, guint i_reason, gpointer user_data)
+{
+    NMDevice *          device = NM_DEVICE(user_data);
+    NMDeviceBt *        self   = NM_DEVICE_BT(user_data);
+    NMDeviceStateReason reason = i_reason;
+
+    switch (nm_device_get_state(device)) {
+    case NM_DEVICE_STATE_PREPARE:
+    case NM_DEVICE_STATE_CONFIG:
+    case NM_DEVICE_STATE_NEED_AUTH:
+        nm_device_state_changed(device, NM_DEVICE_STATE_FAILED, reason);
+        break;
+    case NM_DEVICE_STATE_IP_CONFIG:
+    case NM_DEVICE_STATE_IP_CHECK:
+    case NM_DEVICE_STATE_SECONDARIES:
+    case NM_DEVICE_STATE_ACTIVATED:
+        if (nm_device_activate_ip4_state_in_conf(device))
+            nm_device_activate_schedule_ip_config_timeout(device, AF_INET);
+        else if (nm_device_activate_ip6_state_in_conf(device))
+            nm_device_activate_schedule_ip_config_timeout(device, AF_INET6);
+        else if (nm_device_activate_ip4_state_done(device)) {
+            nm_device_ip_method_failed(device,
+                                       AF_INET,
+                                       NM_DEVICE_STATE_REASON_IP_CONFIG_UNAVAILABLE);
+        } else if (nm_device_activate_ip6_state_done(device)) {
+            nm_device_ip_method_failed(device,
+                                       AF_INET6,
+                                       NM_DEVICE_STATE_REASON_IP_CONFIG_UNAVAILABLE);
+        } else {
+            _LOGW(LOGD_MB,
+                  "PPP failure in unexpected state %u",
+                  (guint) nm_device_get_state(device));
+            nm_device_state_changed(device,
+                                    NM_DEVICE_STATE_FAILED,
+                                    NM_DEVICE_STATE_REASON_IP_CONFIG_UNAVAILABLE);
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+static void
+modem_auth_requested(NMModem *modem, gpointer user_data)
+{
+    NMDevice *device = NM_DEVICE(user_data);
+
+    /* Auth requests (PIN, PAP/CHAP passwords, etc) only get handled
+     * during activation.
+     */
+    if (!nm_device_is_activating(device))
+        return;
+
+    nm_device_state_changed(device, NM_DEVICE_STATE_NEED_AUTH, NM_DEVICE_STATE_REASON_NONE);
+}
+
+static void
+modem_auth_result(NMModem *modem, GError *error, gpointer user_data)
+{
+    NMDevice *         device = NM_DEVICE(user_data);
+    NMDeviceBtPrivate *priv   = NM_DEVICE_BT_GET_PRIVATE(device);
+
+    g_return_if_fail(nm_device_get_state(device) == NM_DEVICE_STATE_NEED_AUTH);
+
+    if (error) {
+        nm_device_state_changed(device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_NO_SECRETS);
+        return;
+    }
+
+    priv->stage1_modem_prepare_state = NM_DEVICE_STAGE_STATE_INIT;
+    nm_device_activate_schedule_stage1_device_prepare(device, FALSE);
+}
+
+static void
+modem_prepare_result(NMModem *modem, gboolean success, guint i_reason, gpointer user_data)
+{
+    NMDeviceBt *        self   = user_data;
+    NMDeviceBtPrivate * priv   = NM_DEVICE_BT_GET_PRIVATE(self);
+    NMDeviceStateReason reason = i_reason;
+    NMDeviceState       state;
+
+    state = nm_device_get_state(NM_DEVICE(self));
+
+    g_return_if_fail(NM_IN_SET(state, NM_DEVICE_STATE_PREPARE, NM_DEVICE_STATE_NEED_AUTH));
+
+    nm_assert(priv->stage1_modem_prepare_state == NM_DEVICE_STAGE_STATE_PENDING);
+
+    if (!success) {
+        if (nm_device_state_reason_check(reason) == NM_DEVICE_STATE_REASON_SIM_PIN_INCORRECT) {
+            /* If the connect failed because the SIM PIN was wrong don't allow
+             * the device to be auto-activated anymore, which would risk locking
+             * the SIM if the incorrect PIN continues to be used.
+             */
+            nm_device_autoconnect_blocked_set(NM_DEVICE(self),
+                                              NM_DEVICE_AUTOCONNECT_BLOCKED_WRONG_PIN);
+        }
+
+        nm_device_state_changed(NM_DEVICE(self), NM_DEVICE_STATE_FAILED, reason);
+        return;
+    }
+
+    priv->stage1_modem_prepare_state = NM_DEVICE_STAGE_STATE_COMPLETED;
+    nm_device_activate_schedule_stage1_device_prepare(NM_DEVICE(self), FALSE);
+}
+
+static void
+device_state_changed(NMDevice *          device,
+                     NMDeviceState       new_state,
+                     NMDeviceState       old_state,
+                     NMDeviceStateReason reason)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(device);
+
+    if (priv->modem)
+        nm_modem_device_state_changed(priv->modem, new_state, old_state);
+
+    /* Need to recheck available connections whenever MM appears or disappears,
+     * since the device could be both DUN and NAP capable and thus may not
+     * change state (which rechecks available connections) when MM comes and goes.
+     */
+    if (priv->mm_running && NM_FLAGS_HAS(priv->capabilities, NM_BT_CAPABILITY_DUN))
+        nm_device_recheck_available_connections(device);
+}
+
+static void
+modem_ip4_config_result(NMModem *modem, NMIP4Config *config, GError *error, gpointer user_data)
+{
+    NMDeviceBt *self   = NM_DEVICE_BT(user_data);
+    NMDevice *  device = NM_DEVICE(self);
+
+    g_return_if_fail(nm_device_activate_ip4_state_in_conf(device) == TRUE);
+
+    if (error) {
+        _LOGW(LOGD_MB | LOGD_IP4 | LOGD_BT,
+              "retrieving IP4 configuration failed: %s",
+              error->message);
+        nm_device_ip_method_failed(device, AF_INET, NM_DEVICE_STATE_REASON_IP_CONFIG_UNAVAILABLE);
+        return;
+    }
+
+    nm_device_activate_schedule_ip_config_result(device, AF_INET, NM_IP_CONFIG_CAST(config));
+}
+
+static void
+ip_ifindex_changed_cb(NMModem *modem, GParamSpec *pspec, gpointer user_data)
+{
+    NMDevice *device = NM_DEVICE(user_data);
+
+    if (!nm_device_is_activating(device))
+        return;
+
+    if (!nm_device_set_ip_ifindex(device, nm_modem_get_ip_ifindex(modem))) {
+        nm_device_state_changed(device,
+                                NM_DEVICE_STATE_FAILED,
+                                NM_DEVICE_STATE_REASON_IP_CONFIG_UNAVAILABLE);
+    }
+}
+
+/*****************************************************************************/
+
+static void
+modem_cleanup(NMDeviceBt *self)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    if (priv->modem) {
+        g_signal_handlers_disconnect_matched(priv->modem,
+                                             G_SIGNAL_MATCH_DATA,
+                                             0,
+                                             0,
+                                             NULL,
+                                             NULL,
+                                             self);
+        nm_clear_pointer(&priv->modem, nm_modem_unclaim);
+    }
+}
+
+static void
+modem_state_cb(NMModem *modem, int new_state_i, int old_state_i, gpointer user_data)
+{
+    NMModemState  new_state = new_state_i;
+    NMModemState  old_state = old_state_i;
+    NMDevice *    device    = NM_DEVICE(user_data);
+    NMDeviceState dev_state = nm_device_get_state(device);
+
+    if (new_state <= NM_MODEM_STATE_DISABLING && old_state > NM_MODEM_STATE_DISABLING) {
+        /* Will be called whenever something external to NM disables the
+         * modem directly through ModemManager.
+         */
+        if (nm_device_is_activating(device) || dev_state == NM_DEVICE_STATE_ACTIVATED) {
+            nm_device_state_changed(device,
+                                    NM_DEVICE_STATE_DISCONNECTED,
+                                    NM_DEVICE_STATE_REASON_USER_REQUESTED);
+            return;
+        }
+    }
+
+    if (new_state < NM_MODEM_STATE_CONNECTING && old_state >= NM_MODEM_STATE_CONNECTING
+        && dev_state >= NM_DEVICE_STATE_NEED_AUTH && dev_state <= NM_DEVICE_STATE_ACTIVATED) {
+        /* Fail the device if the modem disconnects unexpectedly while the
+         * device is activating/activated. */
+        nm_device_state_changed(device,
+                                NM_DEVICE_STATE_FAILED,
+                                NM_DEVICE_STATE_REASON_MODEM_NO_CARRIER);
+        return;
+    }
+}
+
+static void
+modem_removed_cb(NMModem *modem, gpointer user_data)
+{
+    NMDeviceBt *  self = NM_DEVICE_BT(user_data);
+    NMDeviceState state;
+
+    state = nm_device_get_state(NM_DEVICE(self));
+    if (nm_device_is_activating(NM_DEVICE(self)) || state == NM_DEVICE_STATE_ACTIVATED) {
+        nm_device_state_changed(NM_DEVICE(self),
+                                NM_DEVICE_STATE_FAILED,
+                                NM_DEVICE_STATE_REASON_BT_FAILED);
+        return;
+    }
+
+    modem_cleanup(self);
+}
+
+static gboolean
+modem_try_claim(NMDeviceBt *self, NMModem *modem)
+{
+    NMDeviceBtPrivate *priv             = NM_DEVICE_BT_GET_PRIVATE(self);
+    gs_free char *     rfcomm_base_name = NULL;
+    NMDeviceState      state;
+
+    if (priv->modem) {
+        if (priv->modem == modem)
+            return TRUE;
+        return FALSE;
+    }
+
+    if (nm_modem_is_claimed(modem))
+        return FALSE;
+
+    if (!priv->connect_rfcomm_iface)
+        return FALSE;
+
+    rfcomm_base_name = g_path_get_basename(priv->connect_rfcomm_iface);
+    if (!nm_streq0(rfcomm_base_name, nm_modem_get_control_port(modem)))
+        return FALSE;
+
+    /* Can only accept the modem in stage1, but since the interface matched
+     * what we were expecting, don't let anything else claim the modem either.
+     */
+    state = nm_device_get_state(NM_DEVICE(self));
+    if (state != NM_DEVICE_STATE_PREPARE) {
+        _LOGD(LOGD_BT | LOGD_MB,
+              "modem found but device not in correct state (%d)",
+              nm_device_get_state(NM_DEVICE(self)));
+        return FALSE;
+    }
+
+    priv->modem                      = nm_modem_claim(modem);
+    priv->stage1_modem_prepare_state = NM_DEVICE_STAGE_STATE_INIT;
+
+    g_signal_connect(modem, NM_MODEM_PPP_STATS, G_CALLBACK(ppp_stats), self);
+    g_signal_connect(modem, NM_MODEM_PPP_FAILED, G_CALLBACK(ppp_failed), self);
+    g_signal_connect(modem, NM_MODEM_PREPARE_RESULT, G_CALLBACK(modem_prepare_result), self);
+    g_signal_connect(modem, NM_MODEM_IP4_CONFIG_RESULT, G_CALLBACK(modem_ip4_config_result), self);
+    g_signal_connect(modem, NM_MODEM_AUTH_REQUESTED, G_CALLBACK(modem_auth_requested), self);
+    g_signal_connect(modem, NM_MODEM_AUTH_RESULT, G_CALLBACK(modem_auth_result), self);
+    g_signal_connect(modem, NM_MODEM_STATE_CHANGED, G_CALLBACK(modem_state_cb), self);
+    g_signal_connect(modem, NM_MODEM_REMOVED, G_CALLBACK(modem_removed_cb), self);
+    g_signal_connect(modem,
+                     "notify::" NM_MODEM_IP_IFINDEX,
+                     G_CALLBACK(ip_ifindex_changed_cb),
+                     self);
+
+    _LOGD(LOGD_BT | LOGD_MB, "modem found");
+
+    return TRUE;
+}
+
+static void
+mm_modem_added_cb(NMModemManager *manager, NMModem *modem, gpointer user_data)
+{
+    NMDeviceBt *       self = user_data;
+    NMDeviceBtPrivate *priv;
+
+    if (!modem_try_claim(user_data, modem))
+        return;
+
+    priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    if (priv->stage1_bt_state == NM_DEVICE_STAGE_STATE_COMPLETED)
+        nm_device_activate_schedule_stage1_device_prepare(NM_DEVICE(self), FALSE);
+}
+
+/*****************************************************************************/
+
+void
+_nm_device_bt_notify_set_connected(NMDeviceBt *self, gboolean connected)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    connected = !!connected;
+    if (priv->is_connected == connected)
+        return;
+
+    priv->is_connected = connected;
+
+    if (connected || priv->stage1_bt_state != NM_DEVICE_STAGE_STATE_COMPLETED
+        || nm_device_get_state(NM_DEVICE(self)) > NM_DEVICE_STATE_ACTIVATED) {
+        _LOGT(LOGD_BT, "set-connected: %d", connected);
+        return;
+    }
+
+    _LOGT(LOGD_BT, "set-connected: %d (disconnecting device...)", connected);
+    nm_device_state_changed(NM_DEVICE(self),
+                            NM_DEVICE_STATE_FAILED,
+                            NM_DEVICE_STATE_REASON_CARRIER);
+}
+
+static gboolean
+connect_watch_link_idle_cb(gpointer user_data)
+{
+    NMDeviceBt *       self = user_data;
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+    int                ifindex;
+
+    priv->connect_watch_link_idle_id = 0;
+
+    if (nm_device_get_state(NM_DEVICE(self)) <= NM_DEVICE_STATE_ACTIVATED) {
+        ifindex = nm_device_get_ip_ifindex(NM_DEVICE(self));
+        if (ifindex > 0
+            && !nm_platform_link_get(nm_device_get_platform(NM_DEVICE(self)), ifindex)) {
+            _LOGT(LOGD_BT, "device disappeared");
+            nm_device_state_changed(NM_DEVICE(self),
+                                    NM_DEVICE_STATE_FAILED,
+                                    NM_DEVICE_STATE_REASON_BT_FAILED);
+        }
+    }
+
+    return G_SOURCE_REMOVE;
+}
+
+static void
+connect_watch_link_cb(NMPlatform *    platform,
+                      int             obj_type_i,
+                      int             ifindex,
+                      NMPlatformLink *info,
+                      int             change_type_i,
+                      NMDevice *      self)
+{
+    const NMPlatformSignalChangeType change_type = change_type_i;
+    NMDeviceBtPrivate *              priv;
+
+    /* bluez doesn't notify us when the connection disconnects.
+     * Neither does NMManager (or NMDevice) tell us when the ip-ifindex goes away.
+     * This is horrible, and should be improved. For now, watch the link ourself... */
+
+    if (NM_IN_SET(change_type, NM_PLATFORM_SIGNAL_CHANGED, NM_PLATFORM_SIGNAL_REMOVED)) {
+        priv = NM_DEVICE_BT_GET_PRIVATE(self);
+        if (priv->connect_watch_link_idle_id == 0)
+            priv->connect_watch_link_idle_id = g_idle_add(connect_watch_link_idle_cb, self);
+    }
+}
+
+static gboolean
+connect_wait_modem_timeout(gpointer user_data)
+{
+    NMDeviceBt *       self = NM_DEVICE_BT(user_data);
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    /* since this timeout is longer than the connect timeout, we must have already
+     * hit the connect-timeout first or being connected. */
+    nm_assert(priv->stage1_bt_state == NM_DEVICE_STAGE_STATE_COMPLETED);
+
+    priv->connect_wait_modem_id = 0;
+    nm_clear_g_cancellable(&priv->connect_bz_cancellable);
+
+    if (priv->modem)
+        _LOGD(LOGD_BT, "timeout connecting modem for DUN connection");
+    else
+        _LOGD(LOGD_BT, "timeout finding modem for DUN connection");
+
+    nm_device_state_changed(NM_DEVICE(self),
+                            NM_DEVICE_STATE_FAILED,
+                            NM_DEVICE_STATE_REASON_MODEM_NOT_FOUND);
+    return G_SOURCE_REMOVE;
+}
+
+static void
+connect_bz_cb(NMBluezManager *bz_mgr,
+              gboolean        is_complete,
+              const char *    device_name,
+              GError *        error,
+              gpointer        user_data)
+{
+    NMDeviceBt *       self;
+    NMDeviceBtPrivate *priv;
+    char               sbuf[100];
+
+    if (nm_utils_error_is_cancelled(error))
+        return;
+
+    self = user_data;
+    priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    nm_assert(nm_device_is_activating(NM_DEVICE(self)));
+    nm_assert(NM_IN_SET((NMBluetoothCapabilities) priv->connect_bt_type,
+                        NM_BT_CAPABILITY_DUN,
+                        NM_BT_CAPABILITY_NAP));
+
+    if (!is_complete) {
+        nm_assert(priv->connect_bt_type == NM_BT_CAPABILITY_DUN);
+        nm_assert(device_name);
+        nm_assert(!error);
+
+        if (!nm_streq0(priv->connect_rfcomm_iface, device_name)) {
+            nm_assert(!priv->connect_rfcomm_iface);
+            _LOGD(LOGD_BT,
+                  "DUN is still connecting but got serial port \"%s\" to claim modem",
+                  device_name);
+            g_free(priv->connect_rfcomm_iface);
+            priv->connect_rfcomm_iface = g_strdup(device_name);
+        }
+        return;
+    }
+
+    g_clear_object(&priv->connect_bz_cancellable);
+
+    if (!device_name) {
+        _LOGW(LOGD_BT,
+              "%s connect request failed: %s",
+              nm_bluetooth_capability_to_string(priv->connect_bt_type, sbuf, sizeof(sbuf)),
+              error->message);
+        nm_device_state_changed(NM_DEVICE(self),
+                                NM_DEVICE_STATE_FAILED,
+                                NM_DEVICE_STATE_REASON_BT_FAILED);
+        return;
+    }
+
+    _LOGD(LOGD_BT,
+          "%s connect request successful (%s)",
+          nm_bluetooth_capability_to_string(priv->connect_bt_type, sbuf, sizeof(sbuf)),
+          device_name);
+
+    if (priv->connect_bt_type == NM_BT_CAPABILITY_DUN) {
+        if (!nm_streq0(priv->connect_rfcomm_iface, device_name)) {
+            nm_assert_not_reached();
+            g_free(priv->connect_rfcomm_iface);
+            priv->connect_rfcomm_iface = g_strdup(device_name);
+        }
+    } else {
+        nm_assert(priv->connect_bt_type == NM_BT_CAPABILITY_NAP);
+        if (!nm_device_set_ip_iface(NM_DEVICE(self), device_name)) {
+            _LOGW(LOGD_BT, "Error connecting with bluez: cannot find device %s", device_name);
+            nm_device_state_changed(NM_DEVICE(self),
+                                    NM_DEVICE_STATE_FAILED,
+                                    NM_DEVICE_STATE_REASON_BT_FAILED);
+            return;
+        }
+        priv->connect_watch_link_id = g_signal_connect(nm_device_get_platform(NM_DEVICE(self)),
+                                                       NM_PLATFORM_SIGNAL_LINK_CHANGED,
+                                                       G_CALLBACK(connect_watch_link_cb),
+                                                       self);
+    }
+
+    if (!priv->is_connected) {
+        /* we got the callback from NMBluezManager with success. We actually should be
+         * connected and this line shouldn't be reached. */
+        nm_assert_not_reached();
+        _LOGE(LOGD_BT, "bluetooth is unexpectedly not in connected state");
+        nm_device_state_changed(NM_DEVICE(self),
+                                NM_DEVICE_STATE_FAILED,
+                                NM_DEVICE_STATE_REASON_BT_FAILED);
+        return;
+    }
+
+    priv->stage1_bt_state = NM_DEVICE_STAGE_STATE_COMPLETED;
+    nm_device_activate_schedule_stage1_device_prepare(NM_DEVICE(self), FALSE);
+}
+
+static NMActStageReturn
+act_stage1_prepare(NMDevice *device, NMDeviceStateReason *out_failure_reason)
+{
+    NMDeviceBt *       self     = NM_DEVICE_BT(device);
+    NMDeviceBtPrivate *priv     = NM_DEVICE_BT_GET_PRIVATE(self);
+    gs_free_error GError *error = NULL;
+    NMConnection *        connection;
+
+    connection = nm_device_get_applied_connection(device);
+    g_return_val_if_fail(connection, NM_ACT_STAGE_RETURN_FAILURE);
+
+    priv->connect_bt_type = get_connection_bt_type(connection);
+    if (priv->connect_bt_type == NM_BT_CAPABILITY_NONE) {
+        NM_SET_OUT(out_failure_reason, NM_DEVICE_STATE_REASON_BT_FAILED);
+        return NM_ACT_STAGE_RETURN_FAILURE;
+    }
+
+    if (priv->connect_bt_type == NM_BT_CAPABILITY_DUN && !priv->mm_running) {
+        NM_SET_OUT(out_failure_reason, NM_DEVICE_STATE_REASON_MODEM_MANAGER_UNAVAILABLE);
+        return NM_ACT_STAGE_RETURN_FAILURE;
+    }
+
+    if (priv->stage1_bt_state == NM_DEVICE_STAGE_STATE_PENDING)
+        return NM_ACT_STAGE_RETURN_POSTPONE;
+    else if (priv->stage1_bt_state == NM_DEVICE_STAGE_STATE_INIT) {
+        gs_unref_object GCancellable *cancellable = NULL;
+        char                          sbuf[100];
+
+        _LOGD(LOGD_BT,
+              "connecting to %s bluetooth device",
+              nm_bluetooth_capability_to_string(priv->connect_bt_type, sbuf, sizeof(sbuf)));
+
+        cancellable = g_cancellable_new();
+
+        if (!nm_bluez_manager_connect(priv->bz_mgr,
+                                      priv->dbus_path,
+                                      priv->connect_bt_type,
+                                      30000,
+                                      cancellable,
+                                      connect_bz_cb,
+                                      self,
+                                      &error)) {
+            _LOGD(LOGD_BT, "cannot connect to bluetooth device: %s", error->message);
+            *out_failure_reason = NM_DEVICE_STATE_REASON_BT_FAILED;
+            return NM_ACT_STAGE_RETURN_FAILURE;
+        }
+
+        priv->connect_bz_cancellable = g_steal_pointer(&cancellable);
+        priv->stage1_bt_state        = NM_DEVICE_STAGE_STATE_PENDING;
+        return NM_ACT_STAGE_RETURN_POSTPONE;
+    }
+
+    if (priv->connect_bt_type == NM_BT_CAPABILITY_DUN) {
+        if (!priv->modem) {
+            gs_free NMModem **modems = NULL;
+            guint             i, n;
+
+            if (priv->connect_wait_modem_id == 0)
+                priv->connect_wait_modem_id =
+                    g_timeout_add_seconds(30, connect_wait_modem_timeout, self);
+
+            modems = nm_modem_manager_get_modems(priv->modem_manager, &n);
+            for (i = 0; i < n; i++) {
+                if (modem_try_claim(self, modems[i]))
+                    break;
+            }
+            if (!priv->modem)
+                return NM_ACT_STAGE_RETURN_POSTPONE;
+        }
+
+        if (priv->stage1_modem_prepare_state == NM_DEVICE_STAGE_STATE_PENDING)
+            return NM_ACT_STAGE_RETURN_POSTPONE;
+        if (priv->stage1_modem_prepare_state == NM_DEVICE_STAGE_STATE_INIT) {
+            priv->stage1_modem_prepare_state = NM_DEVICE_STAGE_STATE_PENDING;
+            return nm_modem_act_stage1_prepare(priv->modem,
+                                               nm_device_get_act_request(NM_DEVICE(self)),
+                                               out_failure_reason);
+        }
+    }
+
+    return NM_ACT_STAGE_RETURN_SUCCESS;
+}
+
+static NMActStageReturn
+act_stage2_config(NMDevice *device, NMDeviceStateReason *out_failure_reason)
+{
+    NMDeviceBt *       self = NM_DEVICE_BT(device);
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    if (priv->connect_bt_type == NM_BT_CAPABILITY_DUN)
+        nm_modem_act_stage2_config(priv->modem);
+
+    return NM_ACT_STAGE_RETURN_SUCCESS;
+}
+
+static NMActStageReturn
+act_stage3_ip_config_start(NMDevice *           device,
+                           int                  addr_family,
+                           gpointer *           out_config,
+                           NMDeviceStateReason *out_failure_reason)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(device);
+
+    nm_assert_addr_family(addr_family);
+
+    if (priv->connect_bt_type == NM_BT_CAPABILITY_DUN) {
+        if (addr_family == AF_INET) {
+            return nm_modem_stage3_ip4_config_start(priv->modem,
+                                                    device,
+                                                    NM_DEVICE_CLASS(nm_device_bt_parent_class),
+                                                    out_failure_reason);
+        } else {
+            return nm_modem_stage3_ip6_config_start(priv->modem, device, out_failure_reason);
+        }
+    }
+
+    return NM_DEVICE_CLASS(nm_device_bt_parent_class)
+        ->act_stage3_ip_config_start(device, addr_family, out_config, out_failure_reason);
+}
+
+static void
+deactivate(NMDevice *device)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(device);
+
+    nm_clear_g_signal_handler(nm_device_get_platform(device), &priv->connect_watch_link_id);
+    nm_clear_g_source(&priv->connect_watch_link_idle_id);
+    priv->stage1_bt_state = NM_DEVICE_STAGE_STATE_INIT;
+    nm_clear_g_source(&priv->connect_wait_modem_id);
+    nm_clear_g_cancellable(&priv->connect_bz_cancellable);
+
+    priv->stage1_bt_state = NM_DEVICE_STAGE_STATE_INIT;
+
+    if (priv->connect_bt_type == NM_BT_CAPABILITY_DUN) {
+        if (priv->modem) {
+            nm_modem_deactivate(priv->modem, device);
+
+            /* Since we're killing the Modem object before it'll get the
+             * state change signal, simulate the state change here.
+             */
+            nm_modem_device_state_changed(priv->modem,
+                                          NM_DEVICE_STATE_DISCONNECTED,
+                                          NM_DEVICE_STATE_ACTIVATED);
+            modem_cleanup(NM_DEVICE_BT(device));
+        }
+    }
+
+    if (priv->connect_bt_type != NM_BT_CAPABILITY_NONE) {
+        priv->connect_bt_type = NM_BT_CAPABILITY_NONE;
+        nm_bluez_manager_disconnect(priv->bz_mgr, priv->dbus_path);
+    }
+
+    nm_clear_g_free(&priv->connect_rfcomm_iface);
+
+    if (NM_DEVICE_CLASS(nm_device_bt_parent_class)->deactivate)
+        NM_DEVICE_CLASS(nm_device_bt_parent_class)->deactivate(device);
+}
+
+void
+_nm_device_bt_notify_removed(NMDeviceBt *self)
+{
+    g_signal_emit_by_name(self, NM_DEVICE_REMOVED);
+}
+
+/*****************************************************************************/
+
+gboolean
+_nm_device_bt_for_same_device(NMDeviceBt *            self,
+                              const char *            dbus_path,
+                              const char *            bdaddr,
+                              const char *            name,
+                              NMBluetoothCapabilities capabilities)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    return nm_streq(priv->dbus_path, dbus_path) && nm_streq(priv->bdaddr, bdaddr)
+           && capabilities == priv->capabilities && (!name || nm_streq(priv->name, name));
+}
+
+void
+_nm_device_bt_notify_set_name(NMDeviceBt *self, const char *name)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    nm_assert(name);
+
+    if (!nm_streq(priv->name, name)) {
+        _LOGT(LOGD_BT, "set-name: %s", name);
+        g_free(priv->name);
+        priv->name = g_strdup(name);
+        _notify(self, PROP_BT_NAME);
+    }
+}
+
+/*****************************************************************************/
+
+static gboolean
+is_available(NMDevice *dev, NMDeviceCheckDevAvailableFlags flags)
+{
+    NMDeviceBt *       self = NM_DEVICE_BT(dev);
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    /* PAN doesn't need ModemManager, so devices that support it are always available */
+    if (priv->capabilities & NM_BT_CAPABILITY_NAP)
+        return TRUE;
+
+    /* DUN requires ModemManager */
+    return priv->mm_running;
+}
+
+static void
+set_mm_running(NMDeviceBt *self)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+    gboolean           running;
+
+    running = (nm_modem_manager_name_owner_get(priv->modem_manager) != NULL);
+
+    if (priv->mm_running != running) {
+        _LOGD(LOGD_BT, "ModemManager now %s", running ? "available" : "unavailable");
+
+        priv->mm_running = running;
+        nm_device_queue_recheck_available(NM_DEVICE(self),
+                                          NM_DEVICE_STATE_REASON_NONE,
+                                          NM_DEVICE_STATE_REASON_MODEM_MANAGER_UNAVAILABLE);
+    }
+}
+
+static void
+mm_name_owner_changed_cb(GObject *object, GParamSpec *pspec, gpointer user_data)
+{
+    set_mm_running(user_data);
+}
+
+/*****************************************************************************/
+
+static void
+get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(object);
+
+    switch (prop_id) {
+    case PROP_BT_NAME:
+        g_value_set_string(value, priv->name);
+        break;
+    case PROP_BT_CAPABILITIES:
+        g_value_set_uint(value, priv->capabilities);
+        break;
+    default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+        break;
+    }
+}
+
+static void
+set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(object);
+
+    switch (prop_id) {
+    case PROP_BT_BZ_MGR:
+        /* construct-only */
+        priv->bz_mgr = g_object_ref(g_value_get_pointer(value));
+        nm_assert(NM_IS_BLUEZ_MANAGER(priv->bz_mgr));
+        break;
+    case PROP_BT_DBUS_PATH:
+        /* construct-only */
+        priv->dbus_path = g_value_dup_string(value);
+        nm_assert(priv->dbus_path);
+        break;
+    case PROP_BT_BDADDR:
+        /* construct-only */
+        priv->bdaddr = g_value_dup_string(value);
+        nm_assert(priv->bdaddr);
+        break;
+    case PROP_BT_NAME:
+        /* construct-only */
+        priv->name = g_value_dup_string(value);
+        nm_assert(priv->name);
+        break;
+    case PROP_BT_CAPABILITIES:
+        /* construct-only */
+        priv->capabilities = g_value_get_uint(value);
+        nm_assert(NM_IN_SET((NMBluetoothCapabilities) priv->capabilities,
+                            NM_BT_CAPABILITY_DUN,
+                            NM_BT_CAPABILITY_NAP,
+                            NM_BT_CAPABILITY_DUN | NM_BT_CAPABILITY_NAP));
+        break;
+    default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+        break;
+    }
+}
+
+/*****************************************************************************/
+
+static void
+nm_device_bt_init(NMDeviceBt *self)
+{}
+
+static void
+constructed(GObject *object)
+{
+    NMDeviceBt *       self = NM_DEVICE_BT(object);
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    G_OBJECT_CLASS(nm_device_bt_parent_class)->constructed(object);
+
+    priv->modem_manager = g_object_ref(nm_modem_manager_get());
+
+    nm_modem_manager_name_owner_ref(priv->modem_manager);
+
+    g_signal_connect(priv->modem_manager,
+                     NM_MODEM_MANAGER_MODEM_ADDED,
+                     G_CALLBACK(mm_modem_added_cb),
+                     self);
+
+    g_signal_connect(priv->modem_manager,
+                     "notify::" NM_MODEM_MANAGER_NAME_OWNER,
+                     G_CALLBACK(mm_name_owner_changed_cb),
+                     self);
+
+    set_mm_running(self);
+}
+
+NMDeviceBt *
+nm_device_bt_new(NMBluezManager *        bz_mgr,
+                 const char *            dbus_path,
+                 const char *            bdaddr,
+                 const char *            name,
+                 NMBluetoothCapabilities capabilities)
+{
+    g_return_val_if_fail(NM_IS_BLUEZ_MANAGER(bz_mgr), NULL);
+    g_return_val_if_fail(dbus_path, NULL);
+    g_return_val_if_fail(bdaddr, NULL);
+    g_return_val_if_fail(name, NULL);
+    g_return_val_if_fail(capabilities != NM_BT_CAPABILITY_NONE, NULL);
+
+    return g_object_new(NM_TYPE_DEVICE_BT,
+                        NM_DEVICE_UDI,
+                        dbus_path,
+                        NM_DEVICE_IFACE,
+                        bdaddr,
+                        NM_DEVICE_DRIVER,
+                        "bluez",
+                        NM_DEVICE_PERM_HW_ADDRESS,
+                        bdaddr,
+                        NM_DEVICE_BT_BDADDR,
+                        bdaddr,
+                        NM_DEVICE_BT_BZ_MGR,
+                        bz_mgr,
+                        NM_DEVICE_BT_CAPABILITIES,
+                        (guint) capabilities,
+                        NM_DEVICE_BT_DBUS_PATH,
+                        dbus_path,
+                        NM_DEVICE_BT_NAME,
+                        name,
+                        NM_DEVICE_TYPE_DESC,
+                        "Bluetooth",
+                        NM_DEVICE_DEVICE_TYPE,
+                        NM_DEVICE_TYPE_BT,
+                        NULL);
+}
+
+static void
+dispose(GObject *object)
+{
+    NMDeviceBt *       self = NM_DEVICE_BT(object);
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(self);
+
+    nm_clear_g_signal_handler(nm_device_get_platform(NM_DEVICE(self)),
+                              &priv->connect_watch_link_id);
+    nm_clear_g_source(&priv->connect_watch_link_idle_id);
+
+    nm_clear_g_source(&priv->connect_wait_modem_id);
+    nm_clear_g_cancellable(&priv->connect_bz_cancellable);
+
+    if (priv->modem_manager) {
+        g_signal_handlers_disconnect_by_func(priv->modem_manager,
+                                             G_CALLBACK(mm_name_owner_changed_cb),
+                                             self);
+        g_signal_handlers_disconnect_by_func(priv->modem_manager,
+                                             G_CALLBACK(mm_modem_added_cb),
+                                             self);
+        nm_modem_manager_name_owner_unref(priv->modem_manager);
+        g_clear_object(&priv->modem_manager);
+    }
+
+    modem_cleanup(self);
+
+    G_OBJECT_CLASS(nm_device_bt_parent_class)->dispose(object);
+
+    g_clear_object(&priv->bz_mgr);
+}
+
+static void
+finalize(GObject *object)
+{
+    NMDeviceBtPrivate *priv = NM_DEVICE_BT_GET_PRIVATE(object);
+
+    g_free(priv->connect_rfcomm_iface);
+    g_free(priv->dbus_path);
+    g_free(priv->name);
+    g_free(priv->bdaddr);
+
+    G_OBJECT_CLASS(nm_device_bt_parent_class)->finalize(object);
+}
+
+static const NMDBusInterfaceInfoExtended interface_info_device_bluetooth = {
+    .parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT(
+        NM_DBUS_INTERFACE_DEVICE_BLUETOOTH,
+        .signals    = NM_DEFINE_GDBUS_SIGNAL_INFOS(&nm_signal_info_property_changed_legacy, ),
+        .properties = NM_DEFINE_GDBUS_PROPERTY_INFOS(
+            NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("HwAddress",
+                                                             "s",
+                                                             NM_DEVICE_HW_ADDRESS),
+            NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("Name", "s", NM_DEVICE_BT_NAME),
+            NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("BtCapabilities",
+                                                             "u",
+                                                             NM_DEVICE_BT_CAPABILITIES), ), ),
+    .legacy_property_changed = TRUE,
+};
+
+static void
+nm_device_bt_class_init(NMDeviceBtClass *klass)
+{
+    GObjectClass *     object_class      = G_OBJECT_CLASS(klass);
+    NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS(klass);
+    NMDeviceClass *    device_class      = NM_DEVICE_CLASS(klass);
+
+    object_class->constructed  = constructed;
+    object_class->get_property = get_property;
+    object_class->set_property = set_property;
+    object_class->dispose      = dispose;
+    object_class->finalize     = finalize;
+
+    dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS(&interface_info_device_bluetooth);
+
+    device_class->connection_type_check_compatible = NM_SETTING_BLUETOOTH_SETTING_NAME;
+
+    device_class->get_generic_capabilities    = get_generic_capabilities;
+    device_class->can_auto_connect            = can_auto_connect;
+    device_class->deactivate                  = deactivate;
+    device_class->act_stage1_prepare          = act_stage1_prepare;
+    device_class->act_stage2_config           = act_stage2_config;
+    device_class->act_stage3_ip_config_start  = act_stage3_ip_config_start;
+    device_class->check_connection_compatible = check_connection_compatible;
+    device_class->check_connection_available  = check_connection_available;
+    device_class->complete_connection         = complete_connection;
+    device_class->is_available                = is_available;
+    device_class->get_configured_mtu          = nm_modem_get_configured_mtu;
+
+    device_class->state_changed = device_state_changed;
+
+    obj_properties[PROP_BT_BZ_MGR] =
+        g_param_spec_pointer(NM_DEVICE_BT_BZ_MGR,
+                             "",
+                             "",
+                             G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_BT_BDADDR] =
+        g_param_spec_string(NM_DEVICE_BT_BDADDR,
+                            "",
+                            "",
+                            NULL,
+                            G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_BT_DBUS_PATH] =
+        g_param_spec_string(NM_DEVICE_BT_DBUS_PATH,
+                            "",
+                            "",
+                            NULL,
+                            G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_BT_NAME] =
+        g_param_spec_string(NM_DEVICE_BT_NAME,
+                            "",
+                            "",
+                            NULL,
+                            G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_BT_CAPABILITIES] =
+        g_param_spec_uint(NM_DEVICE_BT_CAPABILITIES,
+                          "",
+                          "",
+                          NM_BT_CAPABILITY_NONE,
+                          G_MAXUINT,
+                          NM_BT_CAPABILITY_NONE,
+                          G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    g_object_class_install_properties(object_class, _PROPERTY_ENUMS_LAST, obj_properties);
+
+    signals[PPP_STATS] = g_signal_new(NM_DEVICE_BT_PPP_STATS,
+                                      G_OBJECT_CLASS_TYPE(object_class),
+                                      G_SIGNAL_RUN_FIRST,
+                                      0,
+                                      NULL,
+                                      NULL,
+                                      NULL,
+                                      G_TYPE_NONE,
+                                      2,
+                                      G_TYPE_UINT /*guint32 in_bytes*/,
+                                      G_TYPE_UINT /*guint32 out_bytes*/);
+}