bt hid

kvmd/plugins/hid/bt/bluez.py

@@ -0,0 +1,110 @@
+# ========================================================================== #
+#                                                                            #
+#    KVMD - The main Pi-KVM daemon.                                          #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    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 3 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, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+# ========================================================================== #
+
+
+import types
+
+from typing import Type
+from typing import Optional
+from typing import Any
+
+import dbus
+import dbus.proxies
+
+
+# =====
+HID_CTL_PORT = 17
+HID_INT_PORT = 19
+
+
+# =====
+class BluezIface:
+    # https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/doc/profile-api.txt
+    # https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/doc/adapter-api.txt
+    # qdbus --system org.bluez /org/bluez/hci0 org.bluez.Adapter1.Address
+
+    def __init__(
+        self,
+        iface: str,
+        alias: str,
+        sdp_record: str,
+        pairing_required: bool,
+        auth_required: bool,
+    ) -> None:
+
+        self.__iface = iface
+        self.__alias = alias
+        self.__sdp_record = sdp_record
+        self.__pairing_required = pairing_required
+        self.__auth_required = auth_required
+
+        self.__bus: Optional[dbus.SystemBus] = None
+
+    def get_address(self) -> str:
+        return self.__get_prop("Address")
+
+    def configure(self) -> None:
+        self.__set_prop("Alias", self.__alias)
+        manager = dbus.Interface(self.__get_object("/org/bluez"), "org.bluez.ProfileManager1")
+        manager.RegisterProfile(f"/org/bluez/{self.__iface}", "00001124-0000-1000-8000-00805F9B34FB", {
+            "ServiceRecord": self.__sdp_record,
+            "Role": "server",
+            "RequireAuthentication": self.__pairing_required,
+            "RequireAuthorization": self.__auth_required,
+        })
+        self.__set_prop("Powered", True)
+
+    def set_public(self, public: bool) -> None:
+        self.__set_prop("Pairable", public)
+        self.__set_prop("Discoverable", public)
+
+    def unpair(self, addr: str) -> None:
+        adapter = dbus.Interface(self.__get_object(f"/org/bluez/{self.__iface}"), "org.bluez.Adapter1")
+        adapter.RemoveDevice(f"/org/bluez/hci0/dev_{addr.upper().replace(':', '_')}")
+
+    def __get_prop(self, key: str) -> Any:
+        return self.__get_props().Get("org.bluez.Adapter1", key)
+
+    def __set_prop(self, key: str, value: Any) -> None:
+        self.__get_props().Set("org.bluez.Adapter1", key, value)
+
+    def __get_props(self) -> dbus.Interface:
+        return dbus.Interface(self.__get_object(f"/org/bluez/{self.__iface}"), "org.freedesktop.DBus.Properties")
+
+    def __get_object(self, path: str) -> dbus.proxies.ProxyObject:
+        assert self.__bus is not None
+        return self.__bus.get_object("org.bluez", path)
+
+    def __enter__(self) -> "BluezIface":
+        assert self.__bus is None
+        self.__bus = dbus.SystemBus()
+        return self
+
+    def __exit__(
+        self,
+        _exc_type: Type[BaseException],
+        _exc: BaseException,
+        _tb: types.TracebackType,
+    ) -> None:
+
+        assert self.__bus is not None
+        self.__bus.close()
+        self.__bus = None