32 bit UUID causing exceptions during discovery

[al-little]

• bleak version: 0.19.5
• Python version: 3.10
• Operating System: MacOS
• BlueZ version (bluetoothctl -v) in case of Linux: N/A

Description

Doing a quick scan on MacOS is raising some unhandled exceptions.

    try:
        self.bleak_devices = await BleakScanner.discover()
    except BleakError as exception:
        logging.error("Quick scan failed: %s", exception)

Similar issue
adafruit/Adafruit_Blinka_bleio#62 (review)

def normalize_uuid_str(uuid: str) -> str:
    """
    Normaizes a UUID to the format used by Bleak.

    - Converted to lower case.
    - 16-bit UUIDs are expanded to 128-bit.

    .. versionadded:: 0.20.0
    """
    if len(uuid) == 4:
        # Bluetooth SIG registered 16-bit UUIDs
        uuid = f"0000{uuid}-0000-1000-8000-00805f9b34fb"

    # let UUID class do the validation and conversion to lower case
    return str(UUID(uuid))

What I Did

Performing a Quick Scan. One of the devices has a service UUID string of “DAF51C01”.

Logs

File "/usr/local/Cellar/python@3.10/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/Users/alittle/code/mobapps-python-app-gaiaclient/.venv/lib/python3.10/site-packages/bleak/backends/corebluetooth/CentralManagerDelegate.py", line 265, in did_discover_peripheral
    callback(peripheral, advertisementData, RSSI)
  File "/Users/alittle/code/mobapps-python-app-gaiaclient/.venv/lib/python3.10/site-packages/bleak/backends/corebluetooth/scanner.py", line 116, in callback
    service_uuids = [
  File "/Users/alittle/code/mobapps-python-app-gaiaclient/.venv/lib/python3.10/site-packages/bleak/backends/corebluetooth/scanner.py", line 117, in <listcomp>
    cb_uuid_to_str(u) for u in a.get("kCBAdvDataServiceUUIDs", [])
  File "/Users/alittle/code/mobapps-python-app-gaiaclient/.venv/lib/python3.10/site-packages/bleak/backends/corebluetooth/utils.py", line 19, in cb_uuid_to_str
    return normalize_uuid_str(uuid.UUIDString())
  File "/Users/alittle/code/mobapps-python-app-gaiaclient/.venv/lib/python3.10/site-packages/bleak/uuids.py", line 1167, in normalize_uuid_str
    return str(UUID(uuid))
  File "/usr/local/Cellar/python@3.10/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/uuid.py", line 177, in __init__
    raise ValueError('badly formed hexadecimal UUID string')
ValueError: badly formed hexadeci

[dlech]

Happy to take a pull request to add support for 32-bit UUIDs.