hww: factor out part of hid scan code to HW_PluginBase

so that bitbox02 can override it

electrum/plugin.py

@@ -360,9 +360,8 @@ class DeviceMgr(ThreadJob):
         # A list of clients.  The key is the client, the value is
         # a (path, id_) pair. Needs self.lock.
         self.clients = {}  # type: Dict[HardwareClientBase, Tuple[Union[str, bytes], str]]
-        # What we recognise.  Each entry is a (vendor_id, product_id)
-        # pair.
-        self.recognised_hardware = set()
+        # What we recognise.  (vendor_id, product_id) -> Plugin
+        self._recognised_hardware = {}  # type: Dict[Tuple[int, int], HW_PluginBase]
         # Custom enumerate functions for devices we don't know about.
         self._enumerate_func = set()  # Needs self.lock.
         # locks: if you need to take multiple ones, acquire them in the order they are defined here!
@@ -390,9 +389,9 @@ class DeviceMgr(ThreadJob):
         for client in clients:
             client.timeout(cutoff)
 
-    def register_devices(self, device_pairs):
+    def register_devices(self, device_pairs, *, plugin: 'HW_PluginBase'):
         for pair in device_pairs:
-            self.recognised_hardware.add(pair)
+            self._recognised_hardware[pair] = plugin
 
     def register_enumerate_func(self, func):
         with self.lock:
@@ -642,24 +641,10 @@ class DeviceMgr(ThreadJob):
         devices = []
         for d in hid_list:
             product_key = (d['vendor_id'], d['product_id'])
-            if product_key in self.recognised_hardware:
-                # Older versions of hid don't provide interface_number
-                interface_number = d.get('interface_number', -1)
-                usage_page = d['usage_page']
-                id_ = d['serial_number']
-                if len(id_) == 0:
-                    id_ = str(d['path'])
-                id_ += str(interface_number) + str(usage_page)
-                # The BitBox02's product_id is not unique per device, thus use the path instead to
-                # distinguish devices.
-                if d["product_id"] == 0x2403:
-                    id_ = d['path']
-                devices.append(Device(path=d['path'],
-                                      interface_number=interface_number,
-                                      id_=id_,
-                                      product_key=product_key,
-                                      usage_page=usage_page,
-                                      transport_ui_string='hid'))
+            if product_key in self._recognised_hardware:
+                plugin = self._recognised_hardware[product_key]
+                device = plugin.create_device_from_hid_enumeration(d, product_key=product_key)
+                devices.append(device)
         return devices
 
     @with_scan_lock

electrum/plugins/bitbox02/bitbox02.py

@@ -546,7 +546,7 @@ class BitBox02Plugin(HW_PluginBase):
         self.libraries_available = self.check_libraries_available()
         if not self.libraries_available:
             return
-        self.device_manager().register_devices(self.DEVICE_IDS)
+        self.device_manager().register_devices(self.DEVICE_IDS, plugin=self)
 
     def get_library_version(self):
         try:
@@ -617,3 +617,10 @@ class BitBox02Plugin(HW_PluginBase):
         derivation = keystore.get_derivation_prefix()
         xtype = keystore.get_bip32_node_for_xpub().xtype
         client.get_xpub(derivation, xtype, display=True)
+
+    def create_device_from_hid_enumeration(self, d: dict, *, product_key) -> 'Device':
+        device = super().create_device_from_hid_enumeration(d, product_key=product_key)
+        # The BitBox02's product_id is not unique per device, thus use the path instead to
+        # distinguish devices.
+        id_ = str(d['path'])
+        return device._replace(id_=id_)

electrum/plugins/coldcard/coldcard.py

@@ -477,7 +477,7 @@ class ColdcardPlugin(HW_PluginBase):
         if not self.libraries_available:
             return
 
-        self.device_manager().register_devices(self.DEVICE_IDS)
+        self.device_manager().register_devices(self.DEVICE_IDS, plugin=self)
         self.device_manager().register_enumerate_func(self.detect_simulator)
 
     def get_library_version(self):

electrum/plugins/digitalbitbox/digitalbitbox.py

@@ -675,7 +675,7 @@ class DigitalBitboxPlugin(HW_PluginBase):
     def __init__(self, parent, config, name):
         HW_PluginBase.__init__(self, parent, config, name)
         if self.libraries_available:
-            self.device_manager().register_devices(self.DEVICE_IDS)
+            self.device_manager().register_devices(self.DEVICE_IDS, plugin=self)
 
         self.digitalbitbox_config = self.config.get('digitalbitbox', {})
 

electrum/plugins/hw_wallet/plugin.py

@@ -60,6 +60,22 @@ class HW_PluginBase(BasePlugin):
     def device_manager(self) -> 'DeviceMgr':
         return self.parent.device_manager
 
+    def create_device_from_hid_enumeration(self, d: dict, *, product_key) -> 'Device':
+        # Older versions of hid don't provide interface_number
+        interface_number = d.get('interface_number', -1)
+        usage_page = d['usage_page']
+        id_ = d['serial_number']
+        if len(id_) == 0:
+            id_ = str(d['path'])
+        id_ += str(interface_number) + str(usage_page)
+        device = Device(path=d['path'],
+                        interface_number=interface_number,
+                        id_=id_,
+                        product_key=product_key,
+                        usage_page=usage_page,
+                        transport_ui_string='hid')
+        return device
+
     @hook
     def close_wallet(self, wallet: 'Abstract_Wallet'):
         for keystore in wallet.get_keystores():

electrum/plugins/keepkey/keepkey.py

@@ -88,7 +88,7 @@ class KeepKeyPlugin(HW_PluginBase):
             self.DEVICE_IDS = (keepkeylib.transport_hid.DEVICE_IDS +
                                keepkeylib.transport_webusb.DEVICE_IDS)
             # only "register" hid device id:
-            self.device_manager().register_devices(keepkeylib.transport_hid.DEVICE_IDS)
+            self.device_manager().register_devices(keepkeylib.transport_hid.DEVICE_IDS, plugin=self)
             # for webusb transport, use custom enumerate function:
             self.device_manager().register_enumerate_func(self.enumerate)
             self.libraries_available = True

electrum/plugins/ledger/ledger.py

@@ -578,7 +578,7 @@ class LedgerPlugin(HW_PluginBase):
         self.segwit = config.get("segwit")
         HW_PluginBase.__init__(self, parent, config, name)
         if self.libraries_available:
-            self.device_manager().register_devices(self.DEVICE_IDS)
+            self.device_manager().register_devices(self.DEVICE_IDS, plugin=self)
 
     def get_btchip_device(self, device):
         ledger = False